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1.
Leblanc, Sylvain, Paul.
A Synthetic User Environment for Network
Counter-Surveillance Operations.
Degree: PhD, Electrical and Computer Engineering/Génie électrique et
informatique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/63
► The traditional response to the discovery of a network compromise has been to remove the compromised system from the network, to clean it and to…
(more)
▼ The traditional response to the discovery of a network
compromise has been to remove the compromised system from the
network, to clean it and to restore it to service. This approach is
reactive; a more active approach is necessary and such an approach
requires better intelligence collection on attackers. New tools and
techniques are required to allow the collection of intelligence on
attackers, including the provision of realistic user activity at
the human interface device (HID) level. This research developed a
conceptual framework for the automatic generation of HID events in
a manner that, when observed by attackers, is consistent with a
human inputting text into a computer system. The framework, called
the Human Interface Device Event Generation Process, accepts a
target document as its input and, through sequential
transformation, generates a series of mouse and keyboard human
interface device events. When placed on the Universal Serial Bus of
a compromised computer system, these human interface device events
render the composition of the target document by a synthetic user.
In order to make the generation of human interface device events
consistent with what is expected of a human user, the framework
makes use of a User Personality Model which represents the
synthetic user’s text composition preferences, editing choices,
typing accuracy, use of the mouse and timing characteristics of
human interface device events. All of these aspects of the User
Personality Model are defined in this research. To demonstrate the
validity and feasibility of the framework, we have developed a
proof-of-concept Synthetic User Environment which implements the
keyboard aspects of the Human Interface Device Event Generation
Process framework. The research contributes to the field of
computer network defence by providing a framework for the automatic
generation of human interface device events, defining User
Personality Model components and providing tools for the
advancement of Network Counter-Surveillance Operations and
Deception Operations.
La réponse typique à la découverte d’une compromission
réseau est de retirer le système compromis du réseau, de le
nettoyer et de le remettre en service. Cette approche est réactive;
une approche plus active est nécessaire et une telle approche
requière une meilleure cueillette de renseignement sur les
attaquants. De nouveaux outils et techniques sont de mise pour
permettre la cueillette de renseignements sur les attaquants, y
compris la fourniture d’activité d’utilisateur au niveau de
dispositifs d’interfaces humaines. Cette recherche a conçu un cadre
conceptuel pour la génération automatisé d’évènements de
dispositifs d’interfaces humaines de sorte à ce qu’ils soient
consistants, lorsqu’observés par les attaquants, avec un humain
composant du texte sur un système informatique. Le cadre
conceptuel, appelé le Human Interface Device Event Generation
Process, accepte un document-cible comme entrant et, de par une
séquence de transformation, génère des évènements pour dispositifs
d’interfaces…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Knight, G. Scott.
Subjects/Keywords: Automatic USB Generation; Network Intelligence Toolsuite
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
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APA (6th Edition):
Leblanc, Sylvain, P. (2014). A Synthetic User Environment for Network
Counter-Surveillance Operations. (Doctoral Dissertation). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/63
Chicago Manual of Style (16th Edition):
Leblanc, Sylvain, Paul. “A Synthetic User Environment for Network
Counter-Surveillance Operations.” 2014. Doctoral Dissertation, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/63.
MLA Handbook (7th Edition):
Leblanc, Sylvain, Paul. “A Synthetic User Environment for Network
Counter-Surveillance Operations.” 2014. Web. 02 Mar 2021.
Vancouver:
Leblanc, Sylvain P. A Synthetic User Environment for Network
Counter-Surveillance Operations. [Internet] [Doctoral dissertation]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/63.
Council of Science Editors:
Leblanc, Sylvain P. A Synthetic User Environment for Network
Counter-Surveillance Operations. [Doctoral Dissertation]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/63
2.
Burdett, Shawn.
HYDROLOGY AND WATER QUALITY MODELLING: Applying the Soil
Water Assessment Tool at 5th Canadian Division Support Base
Gagetown.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Civil Engineering/Génie civil, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/81
► A hydrological and water quality model is sought to establish an approach to land management decisions for a Canadian Army training base. Training areas are…
(more)
▼ A hydrological and water quality model is sought to
establish an approach to land management decisions for a Canadian
Army training base. Training areas are subjected to high levels of
persistent activity creating unique land cover and land-use
disturbances. Deforestation, complex road networks, off-road
manoeuvres, and vehicle stream-crossings are among major
anthropogenic activities observed to affect these landscapes.
Expanding, preserving and improving the quality of these areas to
host training activities for future generations is critical to
maintain operational effectiveness. Inclusive to this objective is
minimizing resultant environmental degradation, principally in the
form of hydrologic fluctuations, excess erosion, and sedimentation
of aquatic environments. In some situations these impacts
(particularly sedimentation) could be considered a violation of
environmental legislation, such as the Fisheries Act. Application
of the Soil Water Assessment Tool (SWAT) was assessed for its
ability to simulate hydrologic and water quality conditions
observed in military landscapes at 5th Canadian Division Support
Base (5 CDSB) Gagetown, New Brunswick. Despite some limitations,
this model adequately simulated three partial years of daily
watershed outflow (NSE = 0.47-0.79, R2 = 0.50-0.88) and adequately
predicted suspended sediment yields during the observation period
(%d = -47 to 44%) for one highly disturbed sub-watershed in
Gagetown. Further development of this model may help guide
decisions to develop or decommission training areas, guide land
management practices and prioritize select landscape mitigation
efforts.
On cherche à mettre au point un modèle hydrologique et
de la qualité de l’eau afin d’établir une démarche de prise de
décisions en matière de gestion des terres d’une base d’instruction
de l’Armée canadienne. Les secteurs d’entraînement des bases sont
le théâtre d’activités intensives et soutenues, qui sont à
l’origine de perturbations particulières sur le plan de la
couverture et de l’utilisation des terres. La déforestation, la
création de réseaux routiers complexes, les manœuvres hors route et
la traversée de cours d’eau par des véhicules figurent parmi les
principales activités anthropiques observées ayant des incidences
sur les écopaysages de ces secteurs. L’expansion, la préservation
et l’amélioration de la qualité de ces secteurs pour que les
générations futures puissent aussi y mener leurs activités
d’entraînement sont essentielles au maintien de l’efficacité
opérationnelle. Il s’agit également de réduire au minimum la
détérioration de l’environnement découlant de ces activités,
principalement les fluctuations hydrologiques, l’érosion excessive
et la sédimentation des milieux aquatiques. Dans certaines
situations, de telles répercussions (en particulier la
sédimentation) pourraient être considérées comme une violation de
lois environnementales comme la Loi sur les pêches. On a procédé à
une étude sur la capacité de l’outil d’évaluation du sol et de
l’eau SWAT à simuler les conditions…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Hulley, Michael.
Subjects/Keywords: Hydrology; Water Quality; SWAT; Military; Erosion
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Burdett, S. (2014). HYDROLOGY AND WATER QUALITY MODELLING: Applying the Soil
Water Assessment Tool at 5th Canadian Division Support Base
Gagetown. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/81
Chicago Manual of Style (16th Edition):
Burdett, Shawn. “HYDROLOGY AND WATER QUALITY MODELLING: Applying the Soil
Water Assessment Tool at 5th Canadian Division Support Base
Gagetown.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/81.
MLA Handbook (7th Edition):
Burdett, Shawn. “HYDROLOGY AND WATER QUALITY MODELLING: Applying the Soil
Water Assessment Tool at 5th Canadian Division Support Base
Gagetown.” 2014. Web. 02 Mar 2021.
Vancouver:
Burdett S. HYDROLOGY AND WATER QUALITY MODELLING: Applying the Soil
Water Assessment Tool at 5th Canadian Division Support Base
Gagetown. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/81.
Council of Science Editors:
Burdett S. HYDROLOGY AND WATER QUALITY MODELLING: Applying the Soil
Water Assessment Tool at 5th Canadian Division Support Base
Gagetown. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/81
3.
Demel, David.
2D EXPERIMENTAL AND NUMERICAL INVESTIGATION ON THE EFFECT OF
A FOWLER FLAP GAP AND OVERLAP SIZE ON THE FLOW FIELD.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Aeronautical Engineering/Génie
aéronautique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/61
► The performance of high lift devices such as flaps and slats is an essential part of aircraft design and maintenance. In spite of decades of…
(more)
▼ The performance of high lift devices such as flaps and
slats is an essential part of aircraft design and maintenance. In
spite of decades of research however, this complex flow is not yet
fully understood by the aeronautical community. In an effort to
improve the understanding of the aerodynamic performance of high
lift devices, the flow about a cross section of the CP-140 Aurora
wing was investigated at various angles of attack in the clean
configuration (flap stowed), landing configuration (Fowler flap
deployed and deflected to 40º), and the effect of the variation of
the flap gap and overlap was quantified.
This research included
both experimental work using a PIV system as well as numerical
simulations using RANS. The focus of the investigation was on the
flow behaviour of the boundary layer on the wing trailing edge, as
well as on the slot flow. It was found that an increase in flap gap
benefited the boundary layer on the wing trailing edge by promoting
a fuller velocity profile. In contrast, an increase in flap overlap
had a detrimental effect on the wing trailing edge boundary layer.
The numerical simulations were validated using the experimental
results, and it was found that current commercially available CFD
software Fluent 14.0 was not capable of accurately resolving the
flow without 'a priori' knowledge of part of the flow conditions.
Once the 'a priori' knowledge obtained from the wind tunnel data
was integrated into the simulations, the agreement of the 'a
priori' simulations with the experiment was good.
La performance des dispositifs hypersustentateurs tels
que les volets et becs de bord d'attaque est essentielle pour la
conception et l'entretien des aéronefs. En dépit de décennies de
recherche, une compréhension complète de ce cas complexe continue à
échapper à la communauté aéronautique. Cette thèse détaille une
étude expérimentale et numérique d'un écoulement bi-dimensionnel
autour d'une aile de CP-140 Aurora équipée d'un volet "Fowler".
Cette section transversale de l'aile a été étudiée à différents
angles d'incidence dans la configuration lisse (sous volet
rétracté), configuration d'atterrissage (volet déployé et ajusté à
40º), et à plusieurs tailles de bâillement et de recouvrement.
Cette étude comprend une partie expérimentale utilisant un système
de PIV, et une partie numérique utilisant des simulations employant
de type "RANS".
Cette recherche met l'accent sur la couche limite
au bord de fuite de l'aile et de l'écoulement issu du bâillement du
volet. Il fut constaté qu'une augmentation du bâillement bénéficie
la couche limite sur le bord de fuite de l'aile qui présente un
profil de vitesse plus remplis. Une augmentation du recouvrement,
par contre, a un effet néfaste sur la couche limite et a finalement
provoqué une séparation. Les simulations de configuration
d'atterrissage sans la connaissance 'a priori' des conditions
d'écoulement issu du bâillement du volet, n'ont pas été résolues
avec précision par le logiciel Fluent 14.0. Après les essais en
soufflerie, les simulations de…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Ferchichi, Mohsen, Graveline, Sylvain.
Subjects/Keywords: Fowler flap; high lift devices; boundary layer; Computational Fluid Dynamics; RANS; wind tunnel test; PIV; Fluid dynamics; Aerospace engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Demel, D. (2014). 2D EXPERIMENTAL AND NUMERICAL INVESTIGATION ON THE EFFECT OF
A FOWLER FLAP GAP AND OVERLAP SIZE ON THE FLOW FIELD. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/61
Chicago Manual of Style (16th Edition):
Demel, David. “2D EXPERIMENTAL AND NUMERICAL INVESTIGATION ON THE EFFECT OF
A FOWLER FLAP GAP AND OVERLAP SIZE ON THE FLOW FIELD.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/61.
MLA Handbook (7th Edition):
Demel, David. “2D EXPERIMENTAL AND NUMERICAL INVESTIGATION ON THE EFFECT OF
A FOWLER FLAP GAP AND OVERLAP SIZE ON THE FLOW FIELD.” 2014. Web. 02 Mar 2021.
Vancouver:
Demel D. 2D EXPERIMENTAL AND NUMERICAL INVESTIGATION ON THE EFFECT OF
A FOWLER FLAP GAP AND OVERLAP SIZE ON THE FLOW FIELD. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/61.
Council of Science Editors:
Demel D. 2D EXPERIMENTAL AND NUMERICAL INVESTIGATION ON THE EFFECT OF
A FOWLER FLAP GAP AND OVERLAP SIZE ON THE FLOW FIELD. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/61
4.
Iskandarani, Mohamad.
Implementing Autonomous Unmanned Aerial Vehicle Tactics on
Quadrotor Aircraft Using Linear Model Predictive Control.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Electrical and Computer Engineering/Génie électrique et
informatique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/62
► UAVs are gaining great interest due to their wide area of applications in the military and civilian fields. Applying these UAVs autonomously and in a…
(more)
▼ UAVs are gaining great interest due to their wide area
of applications in the military and civilian fields. Applying these
UAVs autonomously and in a decentralized manner to the
accomplishment of various tasks is a growing trend in the field of
cooperative robotics. Among these challenging group tasks we find
certain UAV tactics, such as dynamic encirclement and formation
flights, operating under the umbrella of safe and robust tactic
switching. Dynamic encirclement is defined as the situation in
which a target is isolated and surrounded by a UAV team in order to
maintain awareness and containment of it. Formation flights allow
for line abreast, triangle or cross formations while in flight,
during which the team members match distance and speed with the
others. In this thesis, the problem of switching from formation
flights to dynamic encirclement is considered, and a decentralized
Linear Model Predictive Control (LMPC) strategy is formulated.
Other control techniques such Taylor series linearization (TSL) and
Feedback Linearization (FL) are used to linearize the complex
tactics models. It is shown, through simulation results and
experimental validation, that the designed control policy is
effective for a team of N UAVs in formation flights switching to
dynamic encirclement of a stationary and moving target. With
real-world flight tests, the Qball-X4 quadrotor aircraft is used as
a validation platform.
Les drones, appliqu és aux domaines civiles et
militaires, ont suscit és un int erêt
croissant à cause de leur
potentiel. L'utilisation des drones, d'une fa çon autonome et
d
écentralis ée, pour l'accomplissement de taches vari ées est une
tendance croissante
dans la communaut é de la robotique coop
erative. Parmi ces taches complexes, on
trouve des tactiques de
drones, tels que l'encerclement dynamique et les vols en
formations,
o u les v éhicules accomplissent un transfert stable
et robuste d'une tactique
à l'autre. Limiter le mouvement et avoir
conscience d'une cible est consid er é comme
partie int egrante de
l'encerclement dynamique. Les vols en formations, tels que ligne
de front, triangle et croix, permettent aux membres de l' équipe de
maintenir les distances
et les vitesses requises par rapport aux
autres. Dans ce m emoire, le probl ème
de transfert stable des
vols en formation à l'encerclement dynamique est consid er é
et
une strat egie de commande pr édictive lin eaire est formul ée.
Autres techniques
de controles, telles que la lin earisation par s
eries de Taylor et la lin earisation par
r etroaction, sont employ
ées pour simplifi er les mod èles non-lin eaires repr esentants
les
tactiques. Il est d emontr é, à travers des r esultats en
simulation et des validations
exp érimentales, que la politique de
controle propos ée est e fficace pour une equipe de
N drones qui
changent de vols en formation à encerclement dynamique. Par
rapport
aux vols exp erimentaux, le quadrirotor Qball-X4 est
utilis é.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Givigi, Sidney.
Subjects/Keywords: Autonomous robotics; Cooperative robotics; Unmanned aerial vehicle; Linear model predictive control
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Iskandarani, M. (2014). Implementing Autonomous Unmanned Aerial Vehicle Tactics on
Quadrotor Aircraft Using Linear Model Predictive Control. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/62
Chicago Manual of Style (16th Edition):
Iskandarani, Mohamad. “Implementing Autonomous Unmanned Aerial Vehicle Tactics on
Quadrotor Aircraft Using Linear Model Predictive Control.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/62.
MLA Handbook (7th Edition):
Iskandarani, Mohamad. “Implementing Autonomous Unmanned Aerial Vehicle Tactics on
Quadrotor Aircraft Using Linear Model Predictive Control.” 2014. Web. 02 Mar 2021.
Vancouver:
Iskandarani M. Implementing Autonomous Unmanned Aerial Vehicle Tactics on
Quadrotor Aircraft Using Linear Model Predictive Control. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/62.
Council of Science Editors:
Iskandarani M. Implementing Autonomous Unmanned Aerial Vehicle Tactics on
Quadrotor Aircraft Using Linear Model Predictive Control. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/62
5.
Mackillop, Michael Andrew.
THE EFFECTS OF TEXT, GRAPHIC, AND IMAGERY PLACEMENT ON
UNDERSTANDING AND RETENTION IN PATROL REPORTING.
Degree: MPA (Master of Public Administration/Maître en administration
des affaires), Defence Studies/Études de la défense, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/82
► The manipulation and organization of text, graphics, and imagery have substantial effects on a reader’s ability to comprehend and retain information. Current military field reporting…
(more)
▼ The manipulation and organization of text, graphics,
and imagery have substantial effects on a reader’s ability to
comprehend and retain information. Current military field reporting
formats are overwhelmingly text based, with limited consideration
as to where an image should be placed, limited use of transferable
graphics, and with limited attempts to effectively synchronize
these elements. This project has taken lessons from the disciplines
of cognitive and educational psychology and used these to develop
new templates.
Experimentation between the Canadian Army’s
current format and the recommended alternative saw an
overall
percentage improvement of 19.7% and a t-Test score of 3.78. This
improvement was echoed by a survey that saw the alternative format
rated at 8.3 / 10 in terms of overall utility, compared to optimum
forms of the current format that only scored 5.4.
This thesis
recommends that such results and the structural techniques used to
achieve them be considered when designing future interfaces and
reporting templates, a program for future evaluation in this area,
and a sample design for an automated format that builds on the work
conducted thus far.
La manipulation et l'organisation du texte, des
graphiques et des images ont des effets importants sur la capacité
d'un lecteur à comprendre et à retenir l'information. Les formats
actuels des rapports opérationnels militaires sont majoritairement
basé sur du texte avec peu de considération pour l'endroit où une
image doit être placée, pour utilisation limitée des graphiques et
pour le peu d’efforts de synchronisation efficace de ces éléments.
Ce projet a pris des leçons dans les disciplines de la psychologie
cognitive et éducative et utilisé ces leçons pour développer de
nouveaux gabarits.
L’expérimentation entre le format actuel de
l'Armée canadienne et l'alternative recommandée a vu un pourcentage
d'amélioration globale de 19,7% et un résultat t - test de 3,78.
Cette amélioration a été observée de nouveau dans un sondage qui a
vu le format alternatif évalué à 8,3 / 10 en termes d'utilité
générale, par rapport à des formes optimales de la formule actuelle
qui a obtenu seulement 5,4.
Cette thèse recommande que de tels
résultats et les techniques de constructions utilisées pour les
atteindre, un programme pour l'évaluation future dans ce domaine et
un plan d'échantillonnage automatisé qui s'appuie sur les travaux
réalisés à ce jour soient considérés lors de la conception
d'interfaces futures et des modèles de rapports.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Hurley, William, St. John, Robert.
Subjects/Keywords: Patrolling; Patrol Reporting; Report Templates; Information Retention; Comprehension; Interface Design; Situational Awareness; Intelligence
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mackillop, M. A. (2014). THE EFFECTS OF TEXT, GRAPHIC, AND IMAGERY PLACEMENT ON
UNDERSTANDING AND RETENTION IN PATROL REPORTING. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/82
Chicago Manual of Style (16th Edition):
Mackillop, Michael Andrew. “THE EFFECTS OF TEXT, GRAPHIC, AND IMAGERY PLACEMENT ON
UNDERSTANDING AND RETENTION IN PATROL REPORTING.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/82.
MLA Handbook (7th Edition):
Mackillop, Michael Andrew. “THE EFFECTS OF TEXT, GRAPHIC, AND IMAGERY PLACEMENT ON
UNDERSTANDING AND RETENTION IN PATROL REPORTING.” 2014. Web. 02 Mar 2021.
Vancouver:
Mackillop MA. THE EFFECTS OF TEXT, GRAPHIC, AND IMAGERY PLACEMENT ON
UNDERSTANDING AND RETENTION IN PATROL REPORTING. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/82.
Council of Science Editors:
Mackillop MA. THE EFFECTS OF TEXT, GRAPHIC, AND IMAGERY PLACEMENT ON
UNDERSTANDING AND RETENTION IN PATROL REPORTING. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/82
6.
James, Jessup.
Merging of Octree Based 3D Occupancy Grid Maps.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Electrical and Computer Engineering/Génie électrique et
informatique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/83
► A technique for merging 3D octree occupancy grid maps into a single global map of an evironment is proposed and implemented in software. Octrees are…
(more)
▼ A technique for merging 3D octree occupancy grid maps
into a single global map of an evironment is proposed and
implemented in software. Octrees are a memory efficient way to
represent a 3D environment by recursively subdividing space at
multiple depths in a tree structure. The use of an octree
representation of a 3D environment allows large environments to be
mapped while limiting the amount of memory used in comparison to
other techniques. When multiple robots are used to map an
environment, a more accurate map of a larger space can be produced
in less time. Techniques are introduced to address information from
multi-depth sources in each map's tree structure as well as
techniques to address relative transformations between maps that
are not axis aligned. These techniques allow the octree
representation of an environment to be extended to multi-robot
applications, specifically those situations where relative map
reference frame transformations are unknown prior to mapping. Given
the flexibility of this work to situations involving no prior
knowledge of map transformations, this work also explores the
problem of merging maps when the sources of map transformations are
uncertain. Therefore registration techniques using commonly mapped
portions of the environment to obtain a better estimate of
transformations between maps are explored. The application of these
techniques is demonstrated by merging maps built by robots in
simulated and real-world environments. The results of this work
show that the techniques proposed in this work to merge octree
based occupancy grids are valid and that an octree based occupancy
grid is a suitable map representation for multi-robot problem
spaces requiring a 3D model of the environment.
Une technique pour la fusion de deux mappes
représentées en forme de grilles d’occupation octree en 3D vers une
seule mappe globale d’un environnement est proposée et implémentée
en logiciel. Les Octrees sont efficaces en utilisation de la
mémoire pour représenter un environnement 3D en sous-divisant
récursivement l’espace dans une structure d’arbre à profondeurs
multiples. L’utilisation de la représentation octree d’un
environnement 3D nous permet de mapper de vastes environnements
tout en limitant la mémoire utilisée en comparaison avec les autres
techniques. Lorsque plusieurs robots sont utilités pour mapper un
environnement, une mappe plus précise d’un espace plus grand peut
être générée en moins de temps. Des techniques sont introduites
pour dénouer l’information de différentes sources qui ont une
profondeur différente dans chaque structure ainsi que des
techniques qui visent les transformations relatives entre les
mappes qui ne sont pas alignées sur leurs axes. Ces techniques
permettent à la représentation par octree d’un environnement à être
portée aux applications multi-robots, spécifiquement dans les
situations où les transformations de cadre de référence relatif à
chaque mappe sont inconnues avant le mappage. Étant donné la
flexibilité de ce travail qui adressent les situations qui…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Givigi, Sidney, Beaulieu, Alain.
Subjects/Keywords: Octrees; Mapping; Simultaneous Localization and Mapping (SLAM); Cooperative Robotics; Navigation; Localization; Computer Vision; Data Fusion
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APA (6th Edition):
James, J. (2014). Merging of Octree Based 3D Occupancy Grid Maps. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/83
Chicago Manual of Style (16th Edition):
James, Jessup. “Merging of Octree Based 3D Occupancy Grid Maps.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/83.
MLA Handbook (7th Edition):
James, Jessup. “Merging of Octree Based 3D Occupancy Grid Maps.” 2014. Web. 02 Mar 2021.
Vancouver:
James J. Merging of Octree Based 3D Occupancy Grid Maps. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/83.
Council of Science Editors:
James J. Merging of Octree Based 3D Occupancy Grid Maps. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/83
7.
Gamble, Kyle A. L.
Modeling Three-Dimensional Deformation Mechanisms in CANDU
Reactor Fuel Elements.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/102
► The horizontal orientation of nuclear fuel elements in CANDU reactors presents some unique challenges when it comes to modeling their performance and behaviour under reactor…
(more)
▼ The horizontal orientation of nuclear fuel elements in
CANDU reactors presents some unique challenges when it comes to
modeling their performance and behaviour under reactor operating
conditions. The elements can undergo two different
three-dimensional deformation mechanisms during operation: bow and
sag. Bowing is the deflection of the fuel elements due to
temperature gradients developed across the diameter, and sagging is
the deformation at high temperatures due to the self weight of the
element. Quantifying these deflections will help determine if
element-to-element or element-to-pressure tube contact may occur
during reactor operation, possibly causing sheath failure or
pressure tube rupture under certain accident conditions.
This
thesis assesses the feasibility, for CANDU reactor fuel elements,
of using the state-of-the-art MOOSE computational framework
developed at the Idaho National Laboratory for modeling these
three-dimensional deformation mechanisms. This work is the first
use of the MOOSE framework in Canada. An application is developed
upon the MOOSE framework called HORSE (HORizontal nuclear fuel
Simulation Environment) for modeling CANDU fuel. Using HORSE,
models are developed that examine the contact capabilities within
the framework in two and three dimensions. In addition models are
constructed that predict fuel performance, the flexural rigidity of
an element, and the thermal bowing behaviour in three dimensions.
Assessment and comparison of results against industry codes,
numerical models, and analytical solutions are presented. The
capabilities of the framework for predicting flexural rigidity and
thermal bowing are also discussed. These comparisons demonstrate
the potential of the MOOSE framework for developing these complex
models. Some additional development of the contact algorithms and
inclusion of more nuclear phenomena is required to improve the
accuracy for horizontal fuel.
L’orientation horizontale des éléments de combustible
nucléaire dans les réacteurs CANDU implique certains défis uniques
quant à la modélisation de leur performance et de leur comportement
dans les conditions d’exploitation du réacteur. Les éléments sont
soumis à deux différents mécanismes de déformation durant
l’exploitation: le fléchissement et l’affaissement. Le
fléchissement est la déviation des éléments de combustible due aux
gradients de température qui se produisent le long du diamètre, et
l’affaissement est la déformation à hautes températures causée par
le poids même de l’élément. La quantification de ces déflexions
devrait aider à déterminer si le contact élément-à-élément ou
élément-à-tube de force peut se produire durant l’exploitation du
réacteur, et devenir une cause possible de la défaillance des
gaines de combustible ou de la rupture du tube de force selon
certaines conditions d’accident.
Cette thèse évalue la
possibilité d’utiliser pour les éléments de combustible du réacteur
nucléaire CANDU le logiciel MOOSE développé au Idaho National
Laboratory et présentement utilisé pour la modélisation en…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Chan, Paul K., Williams, Anthony F..
Subjects/Keywords: Finite Element Analysis; Multiphysics; Thermo-mechanics; Deformation; MOOSE; BISON
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gamble, K. A. L. (2014). Modeling Three-Dimensional Deformation Mechanisms in CANDU
Reactor Fuel Elements. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/102
Chicago Manual of Style (16th Edition):
Gamble, Kyle A L. “Modeling Three-Dimensional Deformation Mechanisms in CANDU
Reactor Fuel Elements.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/102.
MLA Handbook (7th Edition):
Gamble, Kyle A L. “Modeling Three-Dimensional Deformation Mechanisms in CANDU
Reactor Fuel Elements.” 2014. Web. 02 Mar 2021.
Vancouver:
Gamble KAL. Modeling Three-Dimensional Deformation Mechanisms in CANDU
Reactor Fuel Elements. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/102.
Council of Science Editors:
Gamble KAL. Modeling Three-Dimensional Deformation Mechanisms in CANDU
Reactor Fuel Elements. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/102
8.
Mathieu-Denoncourt, Justine Marie Line.
Lethal and sublethal effects of phthalates in Western clawed
frog.
Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/101
► Phthalates are compounds used in a variety of polymers to increase their flexibility and are now ubiquitous in the environment. As few studies have focussed…
(more)
▼ Phthalates are compounds used in a variety of polymers
to increase their flexibility and are now ubiquitous in the
environment. As few studies have focussed on the adverse effects of
these chemicals in aquatic species, this project aimed at
elucidating the effects of phthalates in amphibians. Western clawed
frog (Silurana tropicalis) tadpoles were acutely exposed to water
spiked with monomethyl (MMP), dimethyl (DMP) and dicyclohexyl
(DCHP) phthalates. DMP and DCHP were found to be embryotoxic;
mortality, malformations and developmental delay were induced in
treated larvae. In juvenile frogs, chronic exposures to MMP led to
increased mortality, accelerated metamorphosis and more recurrent
male phenotypes. However, MMP did not have considerable adverse
health effects in tadpoles nor adult frogs. Moreover, analysing the
expression of selected genes increased our understanding of the
mechanism of phthalates. This is the first study to thoroughly
investigate the effects of phthalates in the entire amphibian life
cycle (egg to adult stage). These assays provided valuable data
that will help better assess and manage the risks brought on by the
production and the use of phthalates in the Canadian environment.
Les phthalates sont des composés utilisés dans une variété de
polymères afin d’accroître leur flexibilité et sont maintenant
omniprésents dans l’environnement. Comme peu d’études ont
caractérisé les effets de ces produits chimiques chez les espèces
aquatiques, ce projet avait pour but d’élucider les effets des
phthalates chez les amphibiens. Des têtards du Xénope tropical
(Silurana tropicalis) ont été exposés à de l’eau contaminée avec du
phthalate monométhylique, du phthalate diméthylique et du phthalate
dicyclohexylique. Les phthalates diméthylique et dicyclohexylique
se sont révélés embryotoxiques; les composés ont induit de la
mortalité, des malformations et des délais de développement chez
les larves. Chez les grenouilles juvéniles, les expositions
chroniques au phthalate monométhylique ont mené à de la mortalité,
à l’accélération de la métamorphose et à des phénotypes masculins
plus fréquents. Le phthalate monométhylique, par contre, n’avait
pas d’effets considérables chez les têtards ni chez les grenouilles
adultes. De plus, l’analyse de l’expression d’une série de gènes a
accru notre compréhension du méchanisme d’action des phthalates.
Cette étude est la première à enquêter de manière approfondie les
effets des phthalates sur l'ensemble du cycle de vie des amphibiens
(œuf à adulte). Ces expériences ont fourni de précieuses données
qui aideront à mieux évaluer et gérer les risques associés à la
production et l'utilisation des phthalates dans l'environnement
canadien.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Langlois, Valérie S..
Subjects/Keywords: ecotoxicology; toxicology; molecular biology; plasticizer; plasticiser; phthalate
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mathieu-Denoncourt, J. M. L. (2014). Lethal and sublethal effects of phthalates in Western clawed
frog. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/101
Chicago Manual of Style (16th Edition):
Mathieu-Denoncourt, Justine Marie Line. “Lethal and sublethal effects of phthalates in Western clawed
frog.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/101.
MLA Handbook (7th Edition):
Mathieu-Denoncourt, Justine Marie Line. “Lethal and sublethal effects of phthalates in Western clawed
frog.” 2014. Web. 02 Mar 2021.
Vancouver:
Mathieu-Denoncourt JML. Lethal and sublethal effects of phthalates in Western clawed
frog. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/101.
Council of Science Editors:
Mathieu-Denoncourt JML. Lethal and sublethal effects of phthalates in Western clawed
frog. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/101
9.
Thibaudeau, David.
MODÉLISATION D'UN STRATIFIÉ MINCE CARBONE- EPOXY EN FLEXION
4-POINT.
Degree: MA (MA/Maîtrise ès arts), Mechanical Engineering/Génie mécanique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/103
► Finite elements analysis is often used to predict the behaviour of composite materials as the use of analytical calculations is limited by the complexity the…
(more)
▼ Finite elements analysis is often used to predict the
behaviour of composite materials as the use of analytical
calculations is limited by the complexity the material's stress
state. Although the Classical Laminate Theory (CLT) can be used to
determine in-plane stress, it cannot be used to determine
interlaminar stress as this theory presumes an inplane state. The
analysis of composite materials is possible through various
commercial finite element analysis software packages available on
the market. The objective of the present study was to develop a
methodology to predict the distribution of the interlaminar stress
in a 4-point bending test in order to ultimately study the relation
between laminate fatigue behaviour and the values of interlaminar
stress at the edges. Three finite elements analysis software
packages (ANSYS, Stress Check and PATRAN/NASTRAN) were used to
develop a consistent method for modeling and results extraction.
The numerical predictions obtained from the laminate model
[(0/90)4]s have shown a defection comparable to the experimental
testing results. The laminate's displacement values (defection) are
the same with both the numerical and experimental results despite
the simplicity of the modelling used.
The macroscopic modelling
approach, where each ply is defined by an orthotropic and
homogenous material, generated stress singularities to the plies'
interface at the edges. These singularities are caused by a
discontinuity in the material properties of the neighboring plies.
However, the out-of-plane interlaminar stress tends to converge
when examined at a specified distance from the free edge.
A
convergence zone was established by estimating the stress variation
in accordance with the number of degrees of freedom in the model.
Using the P-method, the convergence zone was precisely defined by
varying the polynomial degree while keeping the position of the
elements identical on each model. The maximum value of the
interlaminar stress cannot be determined with the model used,
however, by determining the maximum interlaminar stress in the
convergence zone a comparison of various laminates can be done.
The interlaminar stress for three types of laminates was assessed.
The number of plies and the orientation of the reinforcements were
defined in order to obtain laminates with similar bending stiffness
but with varied interlaminar stress. The three laminates analysed
[(0/90)4]s,[0/65/90/65/0/65/90/65/0]s et [0/45/90/45/0/45/90/45/0]s
produced low, medium and high values of interlaminar stress.
In
conclusion, developing a method for consistently comparing
interlaminar stresses aid in determining whether a correlation
between interlaminare and fatigue behaviour exists.
La complexité de l'analyse des contraintes des
matériaux composites limite l'utilisation des calculs analytiques,
rendant l'analyse par éléments finis souvent nécessaire. Alors que
la théorie classique des stratifiés (TCS) peut être utilisée pour
déterminer les contraintes dans le plan, les contraintes
interlaminaires ne peuvent ^être…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Wowk, Diane, Marsden, Catharine.
Subjects/Keywords: 4-point bending; interlaminar stresses; finite element; edge effect
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Thibaudeau, D. (2014). MODÉLISATION D'UN STRATIFIÉ MINCE CARBONE- EPOXY EN FLEXION
4-POINT. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/103
Chicago Manual of Style (16th Edition):
Thibaudeau, David. “MODÉLISATION D'UN STRATIFIÉ MINCE CARBONE- EPOXY EN FLEXION
4-POINT.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/103.
MLA Handbook (7th Edition):
Thibaudeau, David. “MODÉLISATION D'UN STRATIFIÉ MINCE CARBONE- EPOXY EN FLEXION
4-POINT.” 2014. Web. 02 Mar 2021.
Vancouver:
Thibaudeau D. MODÉLISATION D'UN STRATIFIÉ MINCE CARBONE- EPOXY EN FLEXION
4-POINT. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/103.
Council of Science Editors:
Thibaudeau D. MODÉLISATION D'UN STRATIFIÉ MINCE CARBONE- EPOXY EN FLEXION
4-POINT. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/103
10.
Jolley, Andrew Robert.
Multicolour Optical Photometry of Active Geostationary
Satellites Using a Small Aperture Telescope.
Degree: MSc (MS/Maîtrise ès sciences), Physics/Physique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/121
► Although broadband photometry has been used to infer information about artifcial satellites since soon after the launch of Sputnik 1, to date there has not…
(more)
▼ Although broadband photometry has been used to infer
information about artifcial
satellites since soon after the launch
of Sputnik 1, to date there has not been a coherent progression of
understanding regarding the information that can be obtained, and
the most effective methods of doing so. Many individual studies,
and some long ongoing experiments, have used costly metre-class
telescopes to obtain data despite other experiments demonstrating
that much more flexible and affordable small aperture telescopes
may be suitable for the task. In addition, due to the highly time
consuming and weather dependent nature of obtaining photometric
observations, many studies have suffered from limited data sets or
relied upon simulations to support their claims. Therefore, an
experiment was conducted with the aim of determining the utility of
small aperture telescopes for conducting broadband photometry of
satellites. A small aperture telescope (Celestron CG-14, 35.6 cm
aperture) was used to gain multiple night-long, high temporal
resolution data sets of a limited number of geostationary
satellites (Anik F1, Anik F1R, Anik G1, Echostar 17, Galaxy 11, and
Intelsat 805). The results of the experiment demonstrate that small
aperture telescopes can be highly effective for obtaining accurate
photometric measurements of geostationary satellites. In the
process some novel discoveries were made that cast doubt on the
effi cacy of some of the previous approaches to obtaining and
analysing photometric data. For example, it was discovered that
satellite lightcurves vary to a significantly greater degree than
has been generally recognised, and significant features such as
oscillations were detected in some lightcurves with frequencies
higher than would be detectable at temporal resolutions that have
typically been employed in the past. Furthermore, these results
suggest that high temporal resolution, simultaneous, multicolour
observations may have significant utility in characterising or
identifying satellites in some cases.
Bien que la photométrie à large bande ait été utilisée
pour obtenir de l'information sur les satellites artificiels peu de
temps après le lancement de Sputnik 1, il n'y a pas eu jusqu'à
maintenant une progression cohérente dans la compréhension de
l'information pouvant en être déduite, ainsi que sur les
méthodologies les plus efficaces. Plusieurs études individuelles et
quelques longues expériences toujours en cours ont fait l'usage de
télescopes dispendieux de la catégorie des mètres pour obtenir des
données malgré que d'autres expériences aient démontré que des
télescopes â petite aperture beaucoup plus flexibles et abordables
peuvent être convenables pour la tâche. De plus, étant donné la
variabilité de l'état du ciel et le cout élevé en temps pour
obtenir des observations photométriques, plusieurs études
reposaient sur des ensembles de données limités ou bien sur des
simulations afin d'appuyer leurs allégations. Par conséquent, une
expérience a été conduite ayant comme objectif d'évaluer l'utilité
des télescopes à…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Wade, Gregg.
Subjects/Keywords: Photometry; geostationary; satellite
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jolley, A. R. (2014). Multicolour Optical Photometry of Active Geostationary
Satellites Using a Small Aperture Telescope. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/121
Chicago Manual of Style (16th Edition):
Jolley, Andrew Robert. “Multicolour Optical Photometry of Active Geostationary
Satellites Using a Small Aperture Telescope.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/121.
MLA Handbook (7th Edition):
Jolley, Andrew Robert. “Multicolour Optical Photometry of Active Geostationary
Satellites Using a Small Aperture Telescope.” 2014. Web. 02 Mar 2021.
Vancouver:
Jolley AR. Multicolour Optical Photometry of Active Geostationary
Satellites Using a Small Aperture Telescope. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/121.
Council of Science Editors:
Jolley AR. Multicolour Optical Photometry of Active Geostationary
Satellites Using a Small Aperture Telescope. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/121
11.
Bernier-Brideau, Maxime.
THE STRUCTURAL, FERROELECTRIC, DIELECTRIC, AND
ELECTROMECHANICAL PROPERTIES OF PIEZOELECTRIC AND ELECTROSTRICTIVE
MATERIALS.
Degree: MSc (MS/Maîtrise ès sciences), Physics/Physique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/122
► Piezoelectric materials are used in an increasing number of applications and submitted to a wide range of temperatures, frequencies, pressures, and voltages. Such diverse environmental…
(more)
▼ Piezoelectric materials are used in an increasing
number of applications and submitted to a wide range of
temperatures, frequencies, pressures, and voltages. Such diverse
environmental conditions result in a non-linear piezoelectric
response that is difficult to characterize, and the presence of
impurities, dopants, and defects add to the complexity of
predicting how a material will perform once it is manufactured,
especially given the sensitivity of the manufacturing process.
Also, recent environmental regulations require new lead-free
piezoelectric materials to be developed and studied.
The object
of this thesis is to further the knowledge with respect to the
structural, ferroelectric, dielectric, and electromechanical
properties of piezoelectric and electrostrictive materials in order
to facilitate the development of new piezoelectric materials and
help optimize current applications. Scanning electron microscope
pictures of EC-65, EC-69, and EC-76 were taken, and X-ray
diffraction patterns of PLZT 9.5 were obtained at room temperature.
Polarization curves were obtained for EC-65, PLZT 9.5, BM-941,
BM-600, BM-150, and PMN-PT for electric fields ranging from 0 to
±1000 kVm-1 and temperatures ranging from -40°C to 120°C. Impedance
analysis was used to determine the relative permittivity and the
dielectric loss tangent of EC-69, PLZT 9.0, PLZT 9.5, and BM-941
for electric fields ranging from 0 to ±2000 kVm-1 and temperatures
ranging from -40°C to 140°C with frequencies ranging from 1 kHz to
5000 kHz. Finally, the AC strain amplitude of PLZT 9.0 and BM-941
were obtained for AC electric fields ranging from 0 to ±1000 kVm-1
and a DC bias ranging from 0 to ±1500 kVm-1. Overall, the
measurements obtained build upon the current knowledge of
piezoelectric materials, support results obtained by other
researchers, and present new results that can be used to develop
new materials and optimize current applications.
Les matériaux piézoélectriques sont utilisés dans un
nombre croissant d’applications les soumettant à un large éventail
de températures, de fréquences, de pressions et de voltages. Ces
conditions environnementales instables engendrent une réponse
piézoélectrique non-linéaire qui est difficile à caractériser. De
plus, la présence d’impuretés, de dopants et d’imperfections
rendent le processus de production et de fabrication précaire et
instable. Puis, de nouvelles lois environnementales exigent une
diminution de l’utilisation du plomb dans l’industrie de
l’électronique et exigent que de nouveaux matériaux
piézoélectriques sans plomb soient développés.
L’objectif de cette
thèse est d’améliorer les connaissances des propriétés
structurelles, ferroélectriques, diélectriques et électromécaniques
des matériaux piézoélectriques et électrostrictifs afin de
faciliter le développement de nouveaux matériaux piézoélectriques
et d’optimiser les applications actuelles. Des images de EC-65,
EC-69 et EC-76 ont été prises par microscopie électronique à
balayage et des réseaux de diffraction à rayons X de PLZT 9.5 ont
été…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Sabat, Ribal Georges.
Subjects/Keywords: piezoelectric; electrostrictive; ferroelectric; dielectric; electromechanical; strain
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bernier-Brideau, M. (2014). THE STRUCTURAL, FERROELECTRIC, DIELECTRIC, AND
ELECTROMECHANICAL PROPERTIES OF PIEZOELECTRIC AND ELECTROSTRICTIVE
MATERIALS. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/122
Chicago Manual of Style (16th Edition):
Bernier-Brideau, Maxime. “THE STRUCTURAL, FERROELECTRIC, DIELECTRIC, AND
ELECTROMECHANICAL PROPERTIES OF PIEZOELECTRIC AND ELECTROSTRICTIVE
MATERIALS.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/122.
MLA Handbook (7th Edition):
Bernier-Brideau, Maxime. “THE STRUCTURAL, FERROELECTRIC, DIELECTRIC, AND
ELECTROMECHANICAL PROPERTIES OF PIEZOELECTRIC AND ELECTROSTRICTIVE
MATERIALS.” 2014. Web. 02 Mar 2021.
Vancouver:
Bernier-Brideau M. THE STRUCTURAL, FERROELECTRIC, DIELECTRIC, AND
ELECTROMECHANICAL PROPERTIES OF PIEZOELECTRIC AND ELECTROSTRICTIVE
MATERIALS. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/122.
Council of Science Editors:
Bernier-Brideau M. THE STRUCTURAL, FERROELECTRIC, DIELECTRIC, AND
ELECTROMECHANICAL PROPERTIES OF PIEZOELECTRIC AND ELECTROSTRICTIVE
MATERIALS. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/122
12.
Stott, Colette.
Pulsed Eddy Current Inspection of Second Layer Wing
Structure.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/141
► Non-destructive testing has become a valuable inspection tool for the aerospace industry. In particular, eddy current testing is used extensively to detect surface and near…
(more)
▼ Non-destructive testing has become a valuable
inspection tool for the aerospace industry. In particular, eddy
current testing is used extensively to detect surface and near
surface defects in aluminum aircraft component structures. However,
there exists a requirement to inspect for the presence of cyclic
fatigue cracks around ferrous fasteners in the second layer of
double layer structures, such as the lap-joint of the CP-140
Aurora, and CC-130 Hercules. These defects are not easily
detectable by conventional eddy current techniques, unless the
fasteners are removed. A capability to inspect through the top
layer would avoid fastener removal, in turn reducing down time and
risk of collateral damage to the structure. Pulsed eddy current
(PEC) is an emerging technique with the potential to detect cyclic
fatigue cracking in the second layer of aluminum wing structures.
PEC offers potential advantages over conventional eddy current in
that the inspection occurs from the top layer, does not require
fastener removal and the diffused magnetic field can be sensed at
greater depths within the material. However, the time-domain PEC
signals show only subtle differences between the presence or
absence of cracks. Principal components analysis (PCA) is a
statistical tool that can be used to reduce the time domain signal
to a small number of scores, which enhance the distinction between
PEC signals. These scores are clustered depending on whether a
crack is present. The relative distance (Mahalanobis Distance),
between the scores for a crack and the centroid of the scores for
fasteners with no crack can be used to distinguish between cracks
and non-cracks.
A PEC coil-based probe was tested on three
lap-joint samples containing ferrous fasteners, two of which were
actual CP-140 Aurora airframes, and one that was fabricated in the
lab. Simulated flaws, ranging in size from 0.8 - 5.5 mm, were
present in both the top and bottom aluminum layers. One hundred
percent of the simulated flaws were detected in two of the samples
with top sheet thickness of 2 mm, and 82% in a thicker (2.6 mm
thick first layer) airframe section with a different fastener type,
all at 5% false call rate. An observed correlation between
Mahalanobis Distance and crack size also suggested that sizing of
second layer cracks is possible.
Le contrôle non destructif est une technique de grande
valeur pour l’industrie aérospatiale. En particulier, les courants
de Foucault sont largement utilisés pour détecter les défauts de
surface ou proche de la surface des composantes en aluminium dans
les avions. Des critères d’inspection existent pour estimer la
présence de fissures dues à la fatigue cyclique autour des attaches
en fer au niveau de la deuxième couche d’une structure à deux
couches, comme les joints de recouvrement des ailes des avions
Aurora CP-140 et Hercule CC-130. Ces défauts ne sont pas
détectables facilement avec les méthodes de courants de Foucault
conventionnelles, à moins que les attaches en fer soient retirées.
La capacité d’accomplir l’inspection à…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Krause, Thomas, Underhill, Ross.
Subjects/Keywords: Pulsed Eddy Current; Electromagnetic Theory; Mahalanobis Distance; Principal Components Analysis
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Stott, C. (2014). Pulsed Eddy Current Inspection of Second Layer Wing
Structure. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/141
Chicago Manual of Style (16th Edition):
Stott, Colette. “Pulsed Eddy Current Inspection of Second Layer Wing
Structure.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/141.
MLA Handbook (7th Edition):
Stott, Colette. “Pulsed Eddy Current Inspection of Second Layer Wing
Structure.” 2014. Web. 02 Mar 2021.
Vancouver:
Stott C. Pulsed Eddy Current Inspection of Second Layer Wing
Structure. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/141.
Council of Science Editors:
Stott C. Pulsed Eddy Current Inspection of Second Layer Wing
Structure. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/141
13.
Perron, Patrick.
Contribution of ion temperature anisotropy and velocity
shears in the direct generation of small-scale irregularities in
the high-latitude F-region.
Degree: PhD, Physics/Physique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/142
► Plasma instabilities play an important role in producing small-scale irregularities in the ionosphere. In particular, current-driven electrostatic ion-acoustic (CDEIA) instabilities contribute to high-latitude F-region electrodynamics.…
(more)
▼ Plasma instabilities play an important role in
producing small-scale irregularities in the ionosphere. In
particular, current-driven electrostatic ion-acoustic (CDEIA)
instabilities contribute to high-latitude F-region electrodynamics.
CDEIA instabilities are affected by ion velocity shears and
temperature anisotropies. Ion temperature anisotropies with
perpendicular enhancements often exist in the high-latitude
F-region. In addition to temperature anisotropies, ion velocity
shears are observed near auroral arc edges, sometimes coexisting
with thermal ion upflow processes and field-aligned currents (FAC).
We investigated whether ion temperature anisotropy or shears lower
the threshold conditions required for the onset of CDEIA
instabilities and also, enhance the incoherent scattering from
ion-acoustic waves. We generalized a dispersion relation to include
ion thermal anisotropy, finite Larmor radius corrections and
collisions. We derived new fluid-like analytical expressions for
the threshold conditions required for instability. We studied how
the instability threshold conditions vary as a function of the wave
vector direction in both fluid and kinetic regimes. We found that,
in some cases, ion temperature anisotropy lowers significantly the
threshold drift requirements for a large range of intermediate
aspect angles. In particular, realistic ion temperature
anisotropies contribute to reducing the instability threshold
velocity shears that are associated with small relative drift
thresholds, for modes propagating almost perpendicularly to the
geomagnetic field. Such instabilities could play a role in the
direct generation of field-aligned irregularities in the
collisional F-region that could be observed with the Super Dual
Auroral Radar Network (SuperDARN) array of high-frequency radars.
These modes would be very sensitive to the radar probing direction
since they are restricted to very narrow angular intervals. On the
other hand, our study confirmed that temperature anisotropies in
magnetized plasmas are unimportant when the incoherent radar is
pointing at the critical angle for which the total temperature is
equal to the effective temperature. Yet, under the right
conditions, “small” ion velocity shears produce significant
enhancements in ISR spectra, especially for directions near
perpendicular to the geomagnetic field. This could lead to
overestimations of the interpreted electron to ion temperature
ratio and electron density when using standard ISR fitting
procedures. In closing, ion temperature anisotropies and velocity
shears are important parameters that need to be considered in the
studies of CDEIA waves and instabilities in the high-latitude
F-region, especially for propagation directions near perpendicular
to the geomagnetic field.
Les instabilités du plasma jouent un rôle important
dans la production d’irrégularités à petite échelle au sein de
l’ionosphère. En particulier, les instabilités électrostatiques
ion-acoustiques déclenchées par courants contribuent aux processus
électrodynamiques de la région…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Noël, Jean-Marc.
Subjects/Keywords: Ionosphere; Plasma waves and instabilities; Space plasma physics; Kinetic theory; Small-scale irregularities; incoherent scatter radars; coherent scatter radars
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Perron, P. (2014). Contribution of ion temperature anisotropy and velocity
shears in the direct generation of small-scale irregularities in
the high-latitude F-region. (Doctoral Dissertation). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/142
Chicago Manual of Style (16th Edition):
Perron, Patrick. “Contribution of ion temperature anisotropy and velocity
shears in the direct generation of small-scale irregularities in
the high-latitude F-region.” 2014. Doctoral Dissertation, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/142.
MLA Handbook (7th Edition):
Perron, Patrick. “Contribution of ion temperature anisotropy and velocity
shears in the direct generation of small-scale irregularities in
the high-latitude F-region.” 2014. Web. 02 Mar 2021.
Vancouver:
Perron P. Contribution of ion temperature anisotropy and velocity
shears in the direct generation of small-scale irregularities in
the high-latitude F-region. [Internet] [Doctoral dissertation]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/142.
Council of Science Editors:
Perron P. Contribution of ion temperature anisotropy and velocity
shears in the direct generation of small-scale irregularities in
the high-latitude F-region. [Doctoral Dissertation]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/142
14.
Abdelmohsen, Shahynaz.
EQUIVALENT FRESHWATER MODELS FOR COASTAL AQUIFERS.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Civil Engineering/Génie civil, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/143
► The aim of this study was to investigate the impact of saltwater intrusion on the transient hydraulic behavior of coastal aquifers and to develop an…
(more)
▼ The aim of this study was to investigate the impact of
saltwater intrusion on the transient hydraulic behavior of coastal
aquifers and to develop an Equivalent Freshwater Modeling (EFM)
approach. The EFM approach proposed here focuses on the use of an
Equivalent Freshwater Hydraulic Conductivity.
A two dimensional
finite difference saltwater/freshwater model was developed using
SEAWAT. An equivalent two dimensional freshwater-only model was
also developed using MODFLOW. Both saltwater/freshwater and
freshwater-only models were run under different recharge and
pumping conditions. A comparison between the two models’ behaviour
was held to identify possible relationships between the hydraulic
conductivity (Ks) of the saltwater/freshwater model and the
hydraulic conductivity (Kf) of the freshwater-only model. For each
value of Ks a calibration exercise was performed to choose the
equivalent Kf value that gives the minimum Root Mean Square Error
between the two models. Plots of the relationship between Ks and
the optimal Kf values were generated for a range of Ks values and
for a range of pumping conditions represented by the ratio of
pumping rate over the freshwater lens thickness, (Q/Bf). The
optimal Kf values were then tested with three dimensional models.
From the different simulation scenarios we found that the presence
of saltwater intrusion does not significantly affect the behavior
of fine sand aquifers (Ks < 5 m/d), under the full range of
pumping and freshwater lens thicknesses considered in this study.
In medium sand aquifers (10 < Ks < 25 m/day), the presence of
the intrusion requires an Equivalent Freshwater Hydraulic
Conductivity (Kf) that is 20 to 30% higher than the original value,
but the required Kf is fairly independent of the pumping over the
freshwater lens thickness ratio (Q/Bf) In coarse sand aquifers (Ks
> 45 m/day), the saltwater presence does have a significant
effect on the aquifer behavior and the ratio of Kf over Ks is
significantly affected by the freshwater lens thickness and the
pumping rate.
The 3-D model verifications, that were performed
with Fine Sand and Medium Sand Hydraulic Conductivities only,
confirmed the Kf /Ks relationships that were developed with the 2-D
models. The performance of the EFM approach was found to depend on
the aquifer hydraulic conductivity, the freshwater lens thickness
and the intensity of the pumping applied to the
models.
Le but de cette étude était d’investiguer l’impact des
intrusions salines sur le comportement hydraulique transitoire des
aquifères côtiers et de développer une approche de Modélisation
Équivalente d’Eaux Douces (MEED). L’approche MEED proposée ici, est
axée sur l’utilisation d’une Conductivité Hydraulique d’Eau Douce
Équivalente.
Un modèle bidimensionnel eaux salines / eaux
fraiches en différence finies a été développé à l’aide de SEAWAT.
Un modèle bidimensionnel eaux fraiches équivalent a aussi été
développé avec MODFLOW. Les deux modèles ont été exécutés sous
différentes conditions de recharge et de pompage. Une comparaison…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Tetreault, Michel, Hulley, Michael.
Subjects/Keywords: Coastal aquifer; Saltwater Hydraulic Conductivity; Equivalent Freshwater Hydraulic Conductivity; SEAWAT
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Abdelmohsen, S. (2014). EQUIVALENT FRESHWATER MODELS FOR COASTAL AQUIFERS. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/143
Chicago Manual of Style (16th Edition):
Abdelmohsen, Shahynaz. “EQUIVALENT FRESHWATER MODELS FOR COASTAL AQUIFERS.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/143.
MLA Handbook (7th Edition):
Abdelmohsen, Shahynaz. “EQUIVALENT FRESHWATER MODELS FOR COASTAL AQUIFERS.” 2014. Web. 02 Mar 2021.
Vancouver:
Abdelmohsen S. EQUIVALENT FRESHWATER MODELS FOR COASTAL AQUIFERS. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/143.
Council of Science Editors:
Abdelmohsen S. EQUIVALENT FRESHWATER MODELS FOR COASTAL AQUIFERS. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/143
15.
Copeland, Kyle A.
COSMIC RAY PARTICLE FLUENCES IN THE ATMOSPHERE RESULTING
FROM PRIMARY COSMIC RAY HEAVY IONS AND THEIR RESULTING EFFECTS ON
DOSE RATES TO AIRCRAFT OCCUPANTS AS CALCULATED WITH MCNPX
2.7.0.
Degree: PhD, Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/182
► Aircrews of commercial aircraft are exposed to higher doses of ionizing radiation than members of the general population in most parts of the world. The…
(more)
▼ Aircrews of commercial aircraft are exposed to higher
doses of ionizing radiation than members of the general population
in most parts of the world. The principal ionizing radiation to
which aircrews are exposed is galactic cosmic radiation (GCR),
which comes from outside our solar system. Among the most enigmatic
particles present in the primary GCR spectrum are the so called
heavy ions; atoms that are stripped of all electrons and traveling
at relativistic speeds. They can cause unique biological injury
that remains poorly understood. This research seeks to improve the
evaluation of dose rates at altitudes up to the edge of space
resulting from these ions.
Secondary particle spectra produced
by mono-energetic showers of neutrons and GCR ions up through iron
at 18 altitudes from 0-100 km were calculated by means of Monte
Carlo simulations using MCNPX 2.7.0. These spectra were converted
to doses per unit fluence of the incident primary particle using
fluence-to-dose conversion coefficients or were summed in order to
provide secondary particle flux per unit primary flux for 37
secondary particle types. Results were collected into databases for
rapid numerical integration. A magnetic pass-band filter with a
Kp-index-based correction function was constructed based on
vertical magnetic cutoff rigidity to account for magnetic shielding
prior to particles reaching the atmosphere. The atmosphere was
modelled from the 1976 U.S. standard atmosphere. Multiple GCR
models were used as sources to drive the model. Solar activity was
accounted for using GCR model specific parameters. Neutron monitor
data was used to account for Forbush decreases.
Calculations
with CARI-7, the resulting rapid computer software model, compare
well with measurements and dose calculations of others, but also
show the characteristic shortcomings of modeling GCR showers
without including local magnetic effects on particle path lengths
and directions. Superposition, an approximation commonly used in
modern flight-dose calculations, slightly increases effective dose
rates at altitudes below 16.3 km and severely decreases them at
higher altitudes, where increased ionization from heavy ions in the
primary GCR flux and their large radiation weighting factors can
result in effective dose estimates as high as 76 microseivert per
hour.
Les membres d’équipage d’avions de ligne commerciaux
sont exposés à de plus grandes doses de rayonnement ionisant que
les membres de la population générale vivant dans presque toutes
les parties du monde. Les membres d’équipage des avions de ligne
sont surtout exposés au rayonnement cosmique galactique qui
provient de l’espace hors de notre système solaire. Les ions lourds
sont parmi les particules les plus énigmatiques composant le
spectre du rayonnement cosmique galactique primaire et comprennent
des atomes qui ont perdu tous leurs électrons et qui se déplacent à
des vitesses relativistes. Ils peuvent causer des dommages
biologiques importants qui demeurent peu compris. La présente
recherche vise à améliorer…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Lewis, Brent J., Corcoran, Emily C..
Subjects/Keywords: aviation; dosimetry; galactic cosmic radiation (GCR); heavy ions (HZE); ionizing radiation; MCNPX; Monte Carlo modelling; superposition
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Copeland, K. A. (2014). COSMIC RAY PARTICLE FLUENCES IN THE ATMOSPHERE RESULTING
FROM PRIMARY COSMIC RAY HEAVY IONS AND THEIR RESULTING EFFECTS ON
DOSE RATES TO AIRCRAFT OCCUPANTS AS CALCULATED WITH MCNPX
2.7.0. (Doctoral Dissertation). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/182
Chicago Manual of Style (16th Edition):
Copeland, Kyle A. “COSMIC RAY PARTICLE FLUENCES IN THE ATMOSPHERE RESULTING
FROM PRIMARY COSMIC RAY HEAVY IONS AND THEIR RESULTING EFFECTS ON
DOSE RATES TO AIRCRAFT OCCUPANTS AS CALCULATED WITH MCNPX
2.7.0.” 2014. Doctoral Dissertation, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/182.
MLA Handbook (7th Edition):
Copeland, Kyle A. “COSMIC RAY PARTICLE FLUENCES IN THE ATMOSPHERE RESULTING
FROM PRIMARY COSMIC RAY HEAVY IONS AND THEIR RESULTING EFFECTS ON
DOSE RATES TO AIRCRAFT OCCUPANTS AS CALCULATED WITH MCNPX
2.7.0.” 2014. Web. 02 Mar 2021.
Vancouver:
Copeland KA. COSMIC RAY PARTICLE FLUENCES IN THE ATMOSPHERE RESULTING
FROM PRIMARY COSMIC RAY HEAVY IONS AND THEIR RESULTING EFFECTS ON
DOSE RATES TO AIRCRAFT OCCUPANTS AS CALCULATED WITH MCNPX
2.7.0. [Internet] [Doctoral dissertation]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/182.
Council of Science Editors:
Copeland KA. COSMIC RAY PARTICLE FLUENCES IN THE ATMOSPHERE RESULTING
FROM PRIMARY COSMIC RAY HEAVY IONS AND THEIR RESULTING EFFECTS ON
DOSE RATES TO AIRCRAFT OCCUPANTS AS CALCULATED WITH MCNPX
2.7.0. [Doctoral Dissertation]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/182
16.
Cosway, Katryn.
FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN
MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS.
Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/161
► The presence of pharmaceuticals and personal care products are increasing in our natural environment due to their incomplete removal within traditional wastewater treatment plants. Constructed…
(more)
▼ The presence of pharmaceuticals and personal care
products are increasing in our natural environment due to their
incomplete removal within traditional wastewater treatment plants.
Constructed wetlands are used as secondary or tertiary wastewater
treatment and as such may receive both pharmaceuticals and personal
care products with subsequent implications for their treatment
efficacy. The aim of this study was to examine the fate and effects
of antimicrobials in planted and unplanted vertical flow
constructed wetlands. Twelve mesocosms were inoculated with
activated sludge from the Cataraqui Bay Wastewater Treatment Plant.
Six were planted with reed canary grass (Phalaris arundinacea) and
the remaining six were left unplanted. The wetland mesocosms were
assessed using a variety of parameters including water treatment
(chemical oxygen demand removal rate), hydrological (porosity,
evapotranspiration/evaporation) water quality (temperature, pH,
specific conductivity, dissolved oxygen, redox potential, total
dissolved solids), ecological (plant height and stem count), and
microbial community function (community level physiological
profiling).. Community-level physiological profiles were gathered
for the wetland microbial community using Biolog EcoplatesTM. The
development phase was initially characterized for all mesocosms
over a ninety-day period to establish ecological stability. The
microbial communities were then subjected to ex-situ, dose-response
exposures (0 – 1000 μg/L) for trimethoprim, triclosan and
sulfamethoxazole to gain an understanding of the ecotoxicity of
these antimicrobials. Following the ex-situ exposures, in-situ
exposures were performed with triclosan and sulfamethoxazole at low
(100 μg/L) and high (500 μg/L) concentrations. The low
concentration was selected based on literature reviews of the
levels found in water bodies and the high concentration was
selected to represent a shock-loading scenario. Hydrological,
ecological and microbial parameters were monitored before,
immediately after and over a recovery period of four weeks
following each exposure. During the developmental period both the
planted and unplanted mesocosms developed similarly and ecological
stability was established. However, a distinct microbial community
profile was observed in the planted mesocosms. In the ex-situ
dose-response experiments the effect of trimethoprim was negligible
on the planted microbial communities but with some removal of
microbial function for the unplanted microbial communities.
Triclosan exposure led to a moderate decline in microbial function
for both the planted and unplanted communities. Sulfamethoxazole
exposure led to a severe decline in microbial function in both the
planted and unplanted microbial communities, so much so that
negligible activity was observed at 1000 μg/L. Following the
in-situ low and high exposures of triclosan and sulfamethoxazole
there was a significant removal of the compounds (>80%) from the
mesocosm water column. The effects of both low and high triclosan
and sulfamethoxazole…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Weber, Kela.
Subjects/Keywords: constructed wetlands; emerging contaminants
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cosway, K. (2014). FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN
MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/161
Chicago Manual of Style (16th Edition):
Cosway, Katryn. “FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN
MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/161.
MLA Handbook (7th Edition):
Cosway, Katryn. “FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN
MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS.” 2014. Web. 02 Mar 2021.
Vancouver:
Cosway K. FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN
MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/161.
Council of Science Editors:
Cosway K. FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN
MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/161
17.
Ghoshouni Rahami, Zahra.
Synthesis of Perylenediimide and Fullerene Functionalized
Molecular Glasses.
Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/181
► Organic molecular glasses are considered as an important category of organic functional materials that have attracted increasing attention in technical applications. The ability of these…
(more)
▼ Organic molecular glasses are considered as an
important category of organic functional materials that have
attracted increasing attention in technical applications. The
ability of these compounds to produce amorphous uniform thin films
that are easy to process, makes them appealing candidates as
chromophores, semiconductors and charge transport materials in
several fields such as organic electronics, optoelectronics, and
photonics. The advantages associated with these amorphous molecular
materials, such as small size and low molecular weight, make the
process of characterization and purification easier. In our
research group, molecular glasses functionalized with selected
electron transporting groups have been designed, synthesized, and
characterized. Also corresponding molecular and physical properties
have been investigated by DSC (differential scanning calorimetry)
and UV-Vis spectroscopy. In this research thesis strategies to
design and synthesize glasses functionalized with perylenediimide
(PDI) dyes and fullerenes and corresponding properties will be
discussed
Les verres moléculaires organiques sont une famille
importante de matériaux fonctionnels organiques qui ont suscité
beaucoup d'intérêt pour certaines applications techniques. La
capacité de ces composés de former des couches minces amorphes
uniformes qui sont faciles à mettre en oeuvre fait de ces matériaux
des candidats idéaux comme chromophores, semiconducteurs ou
transporteurs de charge dans des domaines tels que l'électronique
organique, l'optoélectronique et la photonique. La petite taille et
la basse masse moléculaire de ces composés leur procure des
avantages au niveau de la purification et de la caractérisation.
Dans notre groupe de recherche, nous avons conçu, synthétisé et
caractérisé des verres moléculaires fonctionnalisés avec des
groupes transporteurs d'électrons. De plus, nous avons déterminé
leurs propriétés physiques à l'aide de la calorimétrie
différentielle à balayage (DSC, differential scanning calorimetry)
et la spectroscopie UV-Visible. Le but principal de cette thèse est
de discuter des nouvelles stratégies mises au point pour la
conception et la synthèse de verres moléculaires fonctionnalisés
avec des colorants pérylènediimides (PDI) et des
fullerènes.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Lebel, Olivier.
Subjects/Keywords: molecular glasses
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APA (6th Edition):
Ghoshouni Rahami, Z. (2014). Synthesis of Perylenediimide and Fullerene Functionalized
Molecular Glasses. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/181
Chicago Manual of Style (16th Edition):
Ghoshouni Rahami, Zahra. “Synthesis of Perylenediimide and Fullerene Functionalized
Molecular Glasses.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/181.
MLA Handbook (7th Edition):
Ghoshouni Rahami, Zahra. “Synthesis of Perylenediimide and Fullerene Functionalized
Molecular Glasses.” 2014. Web. 02 Mar 2021.
Vancouver:
Ghoshouni Rahami Z. Synthesis of Perylenediimide and Fullerene Functionalized
Molecular Glasses. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/181.
Council of Science Editors:
Ghoshouni Rahami Z. Synthesis of Perylenediimide and Fullerene Functionalized
Molecular Glasses. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/181
18.
Alkhalifa, Loay.
Locating a Minisum Annulus.
Degree: MSc (MS/Maîtrise ès sciences), Mathematics/Mathématiques, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/201
► The problem is to find the best location of a minisum annulus with given width using the partial coverage distance model. The concept of partial…
(more)
▼ The problem is to find the best location of a minisum
annulus with given width using the partial coverage distance model.
The concept of partial coverage distance is that given demand
points in the covering area are covered at no cost, while for
uncovered demand points there will be additional costs proportional
to their distances to the covering area. The objective of the
problem is to locate the annulus such that the sum of distances
from the uncovered demand points to the annulus (covering area) is
minimized. The distance is measured by the Euclidean norm. We
discuss the cases where the radius of the inner circle of the
annulus is variable and given. For the variable radius, we prove
that at least two demand points must be on the boundary of any
optimal annulus. Based on that, an algorithm to solve the problem
is introduced. In the case of given radius, we introduce the model
and show its usefulness in locating undesirable
facilities.
Le problème est de repérer le meilleur emplacement
d’un espace annulaire avec des données de la largeur en utilisant
le critère mini-somme et un modèle à distance avec couverture
partielle. La notion de distance avec couverture partielle est que
les points dans la zone de couverture sont servis sans pénalité,
mais il y aura, pour la découverte des points, un surcoût
proportionnel à leur distance de la zone de couverture. L’objectif
du problème est de localiser l’espace annulaire tel que la somme
des distances comprises entre les points non couverts par l’espace
annulaire (superficie) réduit au minimum. La distance est mesurée
par la norme euclidienne. Nous discutons les cas où le rayon du
cercle intérieur de l’espace annulaire est variable et donné. Pour
le rayon variable, nous avons prouvé qu’au moins deux points
devaient être sur la limite d’un anneau optimale. Sur cette base,
un algorithme pour résoudre le problème est introduit. Dans le cas
d’un rayon donné, nous introduisons le modèle et nous prouvons son
utilité en localisant des installations indésirables.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Brimberg, Jack.
Subjects/Keywords: minisum; minimax; covering; partial covering; annulus; strip
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alkhalifa, L. (2014). Locating a Minisum Annulus. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/201
Chicago Manual of Style (16th Edition):
Alkhalifa, Loay. “Locating a Minisum Annulus.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/201.
MLA Handbook (7th Edition):
Alkhalifa, Loay. “Locating a Minisum Annulus.” 2014. Web. 02 Mar 2021.
Vancouver:
Alkhalifa L. Locating a Minisum Annulus. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/201.
Council of Science Editors:
Alkhalifa L. Locating a Minisum Annulus. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/201
19.
Connerty, Thomas.
Optimal Trajectories for Autonomous Thermal Soaring.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Aeronautical Engineering/Génie
aéronautique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/221
► Autonomous thermal soaring aircraft exploit the use of naturally occurring updrafts to increase their overall energy state. Thermal soaring strategies for these types of aircraft…
(more)
▼ Autonomous thermal soaring aircraft exploit the use of
naturally occurring updrafts to increase their overall energy
state. Thermal soaring strategies for these types of aircraft have
been developed and refined to increase aircraft range and/or
endurance performance through pilot flying experience and an
increased knowledge of gliding flight theory. Current autopilot
development for thermal centring control makes use of analytical
expressions or accepted soaring techniques for their
implementation. The use of trajectory optimization to analyze
thermal centring strategies has been very limited given the
numerical difficulties encountered when analyzing the problem in a
Cartesian coordinate system. In this study, the generalized
aircraft equations of motion are restructured in cylindrical
coordinates, to reduce numerical computational issues arising
during optimization, and are augmented with wind component forces.
To generate optimal trajectories for autonomous thermal soaring,
the optimal control problem is defined as maximizing either the
aircraft’s instantaneous or final specific energy state and the
trajectories are solved using a direct collocation method using
nonlinear programming. Optimal flight trajectories are presented
for a small autonomous aircraft operating in multiple thermal
profiles of varying strengths. These trajectories are compared to
the derived analytic expressions and a thermal centring strategy
for controller development is presented. As an application, optimal
flight trajectories are presented that maximize thermal energy
extraction whilst providing persistent aerial surveillance coverage
for a variety of thermal and target locations.
Le vol à voile autonome utilise le vol thermique pour
accroître leur énergie. Des stratégies de vol thermique ont été
développées et améliorées pour accroître la distance franchissable
et/ou le temps de vol en utilisant l’expérience des pilotes ou la
mécanique du vol plané. La commande de positionnement sur
l’ascendant thermique des pilotes automatiques actuelles est basée
sur des expressions analytiques ou des techniques de vol connues.
L’emploie d’optimisateur de trajectoire pour déterminer la commande
de positionnement est prescrit dû aux difficultés numériques lors
de l’analyse en coordonnées cartésiens. Pour cette étude, les
équations générales du mouvement sont réécrites en coordonnées
cylindriques, afin de réduire les difficultés numériques durant
l’optimisation et sont accompagnées de composantes de la force du
vent. La commande optimale par méthode de point intérieure non
linéaire est utilisée pour générer les trajectoires optimales en
vol thermique et est définie comme le maxima de l’énergie
instantanée ou de l’énergie finale. Les trajectoires optimales sont
présentées pour de petit aéronef autonome volant dans de multiple
profiles d’ascendant thermique de force différente. Ces
trajectoires sont comparées avec les expressions analytiques et
stratégies de positionnement. Comme exemple d’application, les
trajectoires optimales maximisant l’apport…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Perez, Ruben.
Subjects/Keywords: Aerial Surveillance; Autonomous Soaring; Direct Collocation; Feedback Control; Optimal Trajectories; Target Acquisition; Thermals; Thermal Centering; Thermal Soaring
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Connerty, T. (2014). Optimal Trajectories for Autonomous Thermal Soaring. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/221
Chicago Manual of Style (16th Edition):
Connerty, Thomas. “Optimal Trajectories for Autonomous Thermal Soaring.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/221.
MLA Handbook (7th Edition):
Connerty, Thomas. “Optimal Trajectories for Autonomous Thermal Soaring.” 2014. Web. 02 Mar 2021.
Vancouver:
Connerty T. Optimal Trajectories for Autonomous Thermal Soaring. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/221.
Council of Science Editors:
Connerty T. Optimal Trajectories for Autonomous Thermal Soaring. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/221
20.
Clow, Rachel.
DDT Characterization and Remediation Options at Point Pelee
National Park.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/241
► Point Pelee National Park (PPNP), located in Leamington, ON, is heavily contaminated with the pesticide dichlorodiphenyltrichlorethane (DDT) which was liberally used for mosquito and pest…
(more)
▼ Point Pelee National Park (PPNP), located in
Leamington, ON, is heavily contaminated with the pesticide
dichlorodiphenyltrichlorethane (DDT) which was liberally used for
mosquito and pest control in the Park from the 1940s until the
1960s. Building on previous research, a comprehensive soil and
sediment sampling and analytical program was carried out. Using the
data obtained, contamination boundaries were defined and it was
determined that DDT contamination was centred in three major
hotspot areas. This information was mapped into an interactive
Google Earth platform. DDT isomer analysis compared different
groupings of samples, and determined that each of the soil hotspot
areas have comparable degradation rates with half-lives ranging
from 27 to 40 years. The sediments from the ponds and marsh areas
had statistically different isomer compositions and degradation
pathways than the soil with half-lives of 18 to 25 years. Finally,
a remediation options analysis was conducted and courses of
remedial action are suggested. This information and the Google
Earth overlay is being provided to Point Pelee Park staff so they
can more strategically approach long-term park
management.
Le parc national de Point Pelee (PNPP), situé à
Leamingston Ontario, est largement contaminé avec le pesticide
dichlorodiphenyltrichlorethane (DDT) qui fut largement utilisé pour
le contrôle des moustiques et de la peste pendant les années 1940
jusqu’en 1960. Se basant sur des recherches antérieures, un
programme d’échantillonnage et d’analyse de sédiments et de sols
fut complété. En utilisant les données obtenues, les limites de la
contamination ont été définies et il a été déterminé que la
contamination au DDT était centrée autour de trois point chaud.
Cette information a été cartographiée sur une plateforme
interactive Google Earth. L’analyse d’isomère DDT a comparé les
différents groupes d’échantillons, et a déterminé que les sols de
chaque secteur avaient tous des taux de dégradations comparable
avec des demi-vies de 27 à 40 ans. Les sédiments des secteurs de
marais et d’étangs avaient des compositions d’isomère et des taux
de dégradation statistiquement différents avec des demies-vie de 18
à 25 ans. Finalement, une analyse d’option de dépollution fut menée
et les options d’analyse de dépollution sont suggérées. Cette
information ainsi que l’information cartographiée de Google Earth
sont également fourni aux employés du parc Pelee de manière a ce
qu’ils puissent établir une meilleur stratégie de gestion du parc a
long terme.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Zeeb, B, Rutter, A.
Subjects/Keywords: Dichlorodiphenyltrichlorethane (DDT); Point Pelee National
Park (PPNP); remediation; isomer; half-life; sampling program;
hotspot; Google Earth
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Clow, R. (2014). DDT Characterization and Remediation Options at Point Pelee
National Park. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/241
Chicago Manual of Style (16th Edition):
Clow, Rachel. “DDT Characterization and Remediation Options at Point Pelee
National Park.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/241.
MLA Handbook (7th Edition):
Clow, Rachel. “DDT Characterization and Remediation Options at Point Pelee
National Park.” 2014. Web. 02 Mar 2021.
Vancouver:
Clow R. DDT Characterization and Remediation Options at Point Pelee
National Park. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/241.
Council of Science Editors:
Clow R. DDT Characterization and Remediation Options at Point Pelee
National Park. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/241
21.
Roeterink, Michael J.
SIMULATION OF PERSONAL PROTECTIVE EQUIPMENT EXPOSURE TO
RADIOACTIVE PARTICULATES.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/261
► Airborne radioactive particulates constitute a significant hazard facing military members, emergency personnel, and the immediate public in any nuclear-related incident. Personal protective equipment (PPE) can…
(more)
▼ Airborne radioactive particulates constitute a
significant hazard facing military members, emergency personnel,
and the immediate public in any nuclear-related incident. Personal
protective equipment (PPE) can be used to reduce wearer exposure to
emitted radiation; however, existing PPE suits do not effectively
attenuate all types of radiation and, thus, cannot offer complete
protection in response to radiological hazard scenarios. In light
of the Fukushima-Daiichi incident, it is evident that rigorous
investigation and research needs to be undertaken in order to
resolve this issue and to garner a better understanding of the
level of protection provided by current PPE concepts.
The
objective of this thesis is to develop a realistic dosimetric model
of the human forearm, protected by a PPE sleeve, which can be used
to determine the dose imparted to the tissue in the event of
radiological particulate exposure. A two-fold approach is employed
whereby: (1) a particle transport model is used to determine the
concentration of radioactive particulates in five regions
surrounding the forearm (both within and outside the PPE sleeve);
and (2) these concentration data are then incorporated into a
dosimetric model that uses the Monte Carlo N-Particle (MCNP)
transport code to determine the dose imparted to the tissue. Nine
modelling cases, representative of a combination of the three most
likely radionuclide species (Co-60, Sr-90, and Cs-137) facing
emergency personnel during a radiological dispersion event and
three different PPE sleeve concepts (air impermeable fabric with
closure leak, perfectly sealed air permeable fabric, and no
shielding), were selected for analysis.
The preliminary model
developed in this thesis was successfully able to determine the
dose imparted to a human forearm as a result of exposure to
radioactive particulates released in a dispersion event. The
results indicate that the ability of the fabric to limit the
transport of radioactive particulates has a greater impact on
reducing the imparted dose than its ability to attenuate the
incident radiation. A number of improvements to the model are
proposed and discussed, such that it may be extended to consider
more accurately particulate infiltration processes and whole-body
dose and be used as a tool for Canadian Armed Forces (CAF)
commanders during radiological emergencies.
Les macro-particules radioactives aéroportées
représentent un danger important pour les militaires, le personnel
des urgences et le public immédiat lors d’incidents de nature
nucléaire. L’équipement de protection personnelle (ÉPP) peut être
utilisé afin de réduire l’exposition du porteur aux rayonnements
émis; cependant, les vêtements d’ÉPP existants ne peuvent pas
atténuer de manière efficace tous les types de rayonnement et, par
conséquent, ils ne peuvent pas offrir une protection complète dans
tous les scénarios de danger nucléaire. À la lumière de l’incident
de Fukushima-Daiichi, il est évident qu’une enquête et une
recherche rigoureuses doivent être entreprises pour…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Corcoran, Emily C., Dickson, Eva G..
Subjects/Keywords: Personal protective equipment; Dosimetric modelling; Particulate transport theory; Monte Carlo; Radiation exposure; Dispersion event
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Roeterink, M. J. (2014). SIMULATION OF PERSONAL PROTECTIVE EQUIPMENT EXPOSURE TO
RADIOACTIVE PARTICULATES. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/261
Chicago Manual of Style (16th Edition):
Roeterink, Michael J. “SIMULATION OF PERSONAL PROTECTIVE EQUIPMENT EXPOSURE TO
RADIOACTIVE PARTICULATES.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/261.
MLA Handbook (7th Edition):
Roeterink, Michael J. “SIMULATION OF PERSONAL PROTECTIVE EQUIPMENT EXPOSURE TO
RADIOACTIVE PARTICULATES.” 2014. Web. 02 Mar 2021.
Vancouver:
Roeterink MJ. SIMULATION OF PERSONAL PROTECTIVE EQUIPMENT EXPOSURE TO
RADIOACTIVE PARTICULATES. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/261.
Council of Science Editors:
Roeterink MJ. SIMULATION OF PERSONAL PROTECTIVE EQUIPMENT EXPOSURE TO
RADIOACTIVE PARTICULATES. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/261
22.
Alousis, Peter Lucas.
Numerical Predictions of Evolving Crack Front Geometry and
Fatigue Life from Countersunk Holes in Thin Plates.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Aeronautical Engineering/Génie
aéronautique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/281
► The study of fatigue crack growth for damage tolerance analysis is of interest to the aerospace industry to enable accurate and economical estimates of a…
(more)
▼ The study of fatigue crack growth for damage tolerance
analysis is of interest to the aerospace industry to enable
accurate and economical estimates of a component’s life before
replacement or repairs are required. Many numerical analyses used
for damage tolerance employ a series of assumptions that enable
results to be generated quickly at the cost of accuracy. With
advances in computational power and numerical analyses some of
these assumptions, such as crack shape, are not necessary and not
including the assumptions in the analysis result in more accurate
fatigue predictions. This thesis presents the development and
application of an automated crack growth program, called the ACGP,
to predict crack growth and fatigue life in non-standard
geometries, where the shape of the crack front is determined
iteratively.
The ACGP was developed using a simulated growth
technique and employed finite element analysis and Paris growth
equations to predict fatigue crack growth of cracks in thin plates.
The ACGP was validated for predictions of fatigue life and crack
growth that were found to agree with experimental and accepted
numerical results. The predictions were also compared to results
generated using the fatigue crack growth program AFGROW and
differences and similarities are presented. Models were also
created to predict crack growth emanating from countersunk fastener
holes in thin plates. Assessment and comparison of the results are
presented, identifying the growth pattern, critical initial
location and the effect of geometric properties on the fatigue
life.
L’étude de la résistance, la durabilité et la
tolérance aux dommages des matériaux est d’intérêt à la communauté
aérospatiale pour améliorer la sécurité et estimer de la durée de
vie de composantes en avance d’un remplacement ou d’une réparation.
Plusieurs des méthodes numériques employées pour l’analyse de la
tolérance aux dommages utilisent des hypothèses simplificatrices
permettant un calcul rapide au dépend de la précision. Des progrès
en informatique et en analyse numérique ont rendu certaines de ces
simplifications redondantes, tel que la géométrie des fissures, et,
en conséquence, les prédictions de la vie en fatigue sont devenues
plus précises. Cette thèse discutera du développement et
l’application d’un programme informatique capable de prédire la
propagation des fissures et la résistance en fatigue pour les cas
de géométries hors norme, où la géométrie de la fissure est
déterminée de façon itérative. Le programme de prédiction
automatisé de propagation de fissure, appelé ACGP, emploi une
technique de simulation de propagation, une méthode des éléments
finis et les équations de croissance de Paris pour prédire la
propagation des fissures dans un plaque mince. Les prédictions de
l’ACGP de la vie en fatigue et la propagation des fissures se
comparent bien avec des résultats expérimentaux et numériques. Les
résultats de l’ACGP ont été aussi validés contre ceux du programme
informatique en analyse de fatigue AFGROW, et les similarités et
différences sont…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Wowk, Diane.
Subjects/Keywords: Finite element analysis; fatigue; crack growth; countersunk fastener holes; spline
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alousis, P. L. (2014). Numerical Predictions of Evolving Crack Front Geometry and
Fatigue Life from Countersunk Holes in Thin Plates. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/281
Chicago Manual of Style (16th Edition):
Alousis, Peter Lucas. “Numerical Predictions of Evolving Crack Front Geometry and
Fatigue Life from Countersunk Holes in Thin Plates.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/281.
MLA Handbook (7th Edition):
Alousis, Peter Lucas. “Numerical Predictions of Evolving Crack Front Geometry and
Fatigue Life from Countersunk Holes in Thin Plates.” 2014. Web. 02 Mar 2021.
Vancouver:
Alousis PL. Numerical Predictions of Evolving Crack Front Geometry and
Fatigue Life from Countersunk Holes in Thin Plates. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/281.
Council of Science Editors:
Alousis PL. Numerical Predictions of Evolving Crack Front Geometry and
Fatigue Life from Countersunk Holes in Thin Plates. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/281
23.
Wartman, Stephen Trevor.
Performance Investigation of a Pilot-Scale Integrated
Anaerobic Digestion-Solid-Oxide Fuel Cell System Calibrated to
Experimental Stack Data.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/301
► Biogas is a renewable-energy by-product produced at many wastewater treatment plants (WWTPs) by anaerobic digestion. Unfortunately, biogas is currently underutilized at smaller facilities because of…
(more)
▼ Biogas is a renewable-energy by-product produced at
many wastewater treatment plants (WWTPs) by anaerobic digestion.
Unfortunately, biogas is currently underutilized at smaller
facilities because of the capital and maintenance capital costs
associated with combined heat and power (CHP) technologies and
biogas purification. Solid oxide fuel cell (SOFC) systems are a CHP
technology currently entering commercial markets that could lead to
a rise in biogas utilization at WWTPs because they are the CHP
technology with the highest electrical efficiencies and most
environmentally-friendly emissions profiles.
A 2kWe biogas-fed SOFC pilot plant has been proposed
for construction at the Ravensview wastewater treatment plant in
Kingston, ON, that is to be directly integrated with one of the
on-site digesters. Importantly, the pilot plant will include a
biogas purification system comprised of inexpensive adsorbents that
selectively targets the two most detrimental contaminant species,
hydrogen sulphide and siloxanes.
This work began with an experimental component in
which a prospective SOFC stack for the pilot plant was operated on
processed biogas. Subsequently, a process model of the pilot plant
was developed using the UniSim Design simulation software. The
process model is enhanced by the inclusion of a tunable empirical
cell model that was calibrated to the prospective stack
performance. A series of sensitivity analyses were performed on the
pilot plant model which revealed that the system could be operated
on the expected range of biogas compositions generated at WWTPs.
The maximum feasible gross electrical and CHP efficiencies were
estimated to be 62 and 77 % for operation on Ravensview
biogas.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Thurgood, Chris, Peppley, Brant A..
Subjects/Keywords: biogas; solid-oxide fuel cell; anaerobic digestion; integrated system; pilot plant; combined heat and power; biogas purification; siloxane; hydrogen sulphide; activated carbon; activated alumina; wastewater treatment; sensitivity analysis
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wartman, S. T. (2014). Performance Investigation of a Pilot-Scale Integrated
Anaerobic Digestion-Solid-Oxide Fuel Cell System Calibrated to
Experimental Stack Data. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/301
Chicago Manual of Style (16th Edition):
Wartman, Stephen Trevor. “Performance Investigation of a Pilot-Scale Integrated
Anaerobic Digestion-Solid-Oxide Fuel Cell System Calibrated to
Experimental Stack Data.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/301.
MLA Handbook (7th Edition):
Wartman, Stephen Trevor. “Performance Investigation of a Pilot-Scale Integrated
Anaerobic Digestion-Solid-Oxide Fuel Cell System Calibrated to
Experimental Stack Data.” 2014. Web. 02 Mar 2021.
Vancouver:
Wartman ST. Performance Investigation of a Pilot-Scale Integrated
Anaerobic Digestion-Solid-Oxide Fuel Cell System Calibrated to
Experimental Stack Data. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/301.
Council of Science Editors:
Wartman ST. Performance Investigation of a Pilot-Scale Integrated
Anaerobic Digestion-Solid-Oxide Fuel Cell System Calibrated to
Experimental Stack Data. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/301
24.
Parisien, Michele, A.
EFFECT OF CADMIUM BIOAVAILABILITY ON PHYTOEXTRACTION
FEASIBILITY AND ECOLOGICAL RISK IN A COMPOST-BASED SOIL.
Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2014, Royal Military College of Canada
URL: http://hdl.handle.net/11264/341
► The effect of cadmium (Cd) bioavailability on phytoextraction feasibility and ecological risk was investigated in soil amended with municipal solid waste (MSW) and sewage sludge…
(more)
▼ The effect of cadmium (Cd) bioavailability on
phytoextraction feasibility and ecological risk was investigated in
soil amended with municipal solid waste (MSW) and sewage sludge
(SS) compost at the Peterborough Gun Club in Peterborough, Canada.
Plant uptake was low due to sorption of Cd to stable soil
fractions, and it was therefore determined that phytoextraction was
not a feasible method of remediating these MSW/SS compost-based
soils. Low plant bioavailability limited exposure of higher order
receptors to Cd, and an ecological risk assessment (ERA) indicated
no potential for risk to any of the seven ecological receptors
evaluated at this site. For comparison, risk was also characterized
at a nearby PCB-contaminated site using the same seven receptors.
Previous research had shown that phytoextraction would be an
effective method of remediating this PCB site due to high plant
uptake of the contaminant, and an ERA revealed that five of the
seven receptors evaluated were potentially at risk of experiencing
adverse health effects from PCBs. As ERAs characterize risk under
present environmental conditions, the long-term potential for
biochar to sorb Cd and limit its bioavailability was evaluated at
the Peterborough site. Trends indicated decreasing Cd
bioavailability in biochar-amended soil relative to the un-amended
control, and this coincided with a significant decrease in organic
matter content in the control soil. The results of this thesis
emphasize the influence of contaminant bioavailability on
phytoextraction feasibility and ecological risk, and demonstrate
the potential for biochar to limit long-term Cd bioavailability and
risk in MSW/SS compost-amended soil.
L'effet de la biodisponibilité de cadmium (Cd) sur la
faisabilité d’utiliser la phytoextraction ainsi que les risques
écologiques associés ont été étudiés dans les sols ou des déchets
municipaux solides (DMS) et des boues d'épuration (BE) compostées
ont été ajoutés au Club de Tir Peterborough (CTP) à Peterborough,
Canada. La phytoextraction de Cd par les plantes était faible grâce
à la sorption de Cd sur les fractions de sol stables et la
phytoextraction par les plantes n'est donc pas une méthode possible
pour rétablir les sols contaminés avec le Cd par l'application de
compost produit avec DMS/BE. Cependant, la faible phytoextraction
de Cd par les plantes réduit l’exposition du Cd pour les récepteurs
écologiques des niveaux trophiques plus élevés sur ce site, et une
évaluation des risques écologiques a indiqué qu’il n’y a aucun
potentiel de risque. Pour comparaison, les risques écologiques ont
aussi été caractérisés sur un site contaminé par des biphényles
polychlorés (BPC) en utilisant les mêmes sept récepteurs. Des
recherches antérieures avaient montré que la phytoextraction serait
une méthode efficace de réhabiliter ce site à cause de la
biodisponibilité des BPC élevée, et une évaluation des risques
écologiques a indiqué qu'il existe le potentiel de risque à cinq
des sept récepteurs évaluées. Étant donné que les évaluations des
risques écologiques…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Zeeb, Barbara, A., Rutter, Allison.
Subjects/Keywords: cadmium; municipal solid waste; sewage sludge; compost; bioavailability; phytoextraction; ecological risk; biochar
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Parisien, Michele, A. (2014). EFFECT OF CADMIUM BIOAVAILABILITY ON PHYTOEXTRACTION
FEASIBILITY AND ECOLOGICAL RISK IN A COMPOST-BASED SOIL. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/341
Chicago Manual of Style (16th Edition):
Parisien, Michele, A. “EFFECT OF CADMIUM BIOAVAILABILITY ON PHYTOEXTRACTION
FEASIBILITY AND ECOLOGICAL RISK IN A COMPOST-BASED SOIL.” 2014. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/341.
MLA Handbook (7th Edition):
Parisien, Michele, A. “EFFECT OF CADMIUM BIOAVAILABILITY ON PHYTOEXTRACTION
FEASIBILITY AND ECOLOGICAL RISK IN A COMPOST-BASED SOIL.” 2014. Web. 02 Mar 2021.
Vancouver:
Parisien, Michele A. EFFECT OF CADMIUM BIOAVAILABILITY ON PHYTOEXTRACTION
FEASIBILITY AND ECOLOGICAL RISK IN A COMPOST-BASED SOIL. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/341.
Council of Science Editors:
Parisien, Michele A. EFFECT OF CADMIUM BIOAVAILABILITY ON PHYTOEXTRACTION
FEASIBILITY AND ECOLOGICAL RISK IN A COMPOST-BASED SOIL. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/341
25.
Gharib, Nada.
DISCOVERY AND CHARACTERISATION OF YEAST FERRITIN (yFer1) IN
SACCHAROMYCES CEREVISIAE.
Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2015, Royal Military College of Canada
URL: http://hdl.handle.net/11264/402
► Ferritin is an important iron chelating protein that is reported to store iron in order to prevent the toxic effects of excess iron inside the…
(more)
▼ Ferritin is an important iron chelating protein that
is reported to store iron in order to prevent the toxic effects of
excess iron inside the cell. Ferritin is found almost ubiquitously
in all kingdoms of life except in Fungi where its homologues in
different fungal species are very limited. We previously conducted
a genetic screen looking for sequences with the ability to suppress
the pro-apoptotic effects of Bax in yeast. One of the DNA sequences
we found that prevented Bax-mediated cell death in Saccharomyces
cerevisiae yeast cells was that of the human ferritin heavy chain
subunit (H-ferritin). As ferritins appear to be absent in yeast, it
was surprising to find that human ferritin was able to function in
yeast to prevent the effects of Bax. We therefore set out to
determine whether yeast in fact does have a ferritin homologue by
conducting a search in the Saccharomyces Genome Database (SGD) for
sequences homologous to human H-ferritin. We identified YER067W, a
161 residue protein with 20% sequence identity with the 183 residue
human H-ferritin as a likely ferritin yeast homologue. Like human
H-ferritin, we found YER067W to be a Bax suppressor and general
pro-survival protein. When overexpressed in S. cerevisiae
separately, both proteins were found to behave similarly under
various conditions, and were found to behave like iron scavengers
as opposed to iron storage centres in yeast. Overall, these results
suggest that YER067W is likely to be the long sought-after yeast
ferritin (yFer1).
La ferritine est une protéine importante qui chélate
et entrepose le fer afin d'éviter les effets toxiques de l'excès de
fer dans la cellule. La ferritine se trouve presque ubiquitaire
dans tous les règnes de la vie, sauf dans les champignons où ses
homologues dans des différentes espèces fongiques sont rares. Nous
avons déjà effectué un criblage à la recherche de séquences avec la
possibilité de bloquer les effets pro-apoptotiques de Bax. Une des
séquences d'ADN que nous avons trouvé qui a empêché la mort
cellulaire induite par Bax dans des cellules de levure
Saccharomyces cerevisiae a été celle qui code pour la chaîne lourde
de la ferritine humaine (H-ferritine). Parce que la levure n'est
pas connue pour posséder des ferritines, il était surprenant de
trouver que la ferritine humaine était en mesure de fonctionner
dans la levure pour prévenir les effets de Bax. Nous avons donc
cherché à déterminer si la levure, en fait, a un homologue de
ferritine en effectuant une recherche dans la base de données du
génome de Saccharomyces (SGD) pour des séquences qui sont
homologues à l’H-ferritine humaine. Nous avons identifié YER067W,
une protéine de 161 résidus avec 20% d'identité de séquence avec
l’H-ferritine humaine de 183 résidus comme un homologue de levure
susceptible d’être la ferritine. Comme pour la H-ferritine humaine,
nous avons trouvé que YER067W est un suppresseur de Bax et une
protéine pro-survie générale. Lorsque surexprimée dans S.
cerevisiae séparément, les deux protéines se comportent de façon
similaire dans des…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Greenwood, Michael.
Subjects/Keywords: Ferritin; Programmed Cell Death; Anti-apoptosis; Iron; Saccharomyces cerevisiae; Bax; Fungi
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gharib, N. (2015). DISCOVERY AND CHARACTERISATION OF YEAST FERRITIN (yFer1) IN
SACCHAROMYCES CEREVISIAE. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/402
Chicago Manual of Style (16th Edition):
Gharib, Nada. “DISCOVERY AND CHARACTERISATION OF YEAST FERRITIN (yFer1) IN
SACCHAROMYCES CEREVISIAE.” 2015. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/402.
MLA Handbook (7th Edition):
Gharib, Nada. “DISCOVERY AND CHARACTERISATION OF YEAST FERRITIN (yFer1) IN
SACCHAROMYCES CEREVISIAE.” 2015. Web. 02 Mar 2021.
Vancouver:
Gharib N. DISCOVERY AND CHARACTERISATION OF YEAST FERRITIN (yFer1) IN
SACCHAROMYCES CEREVISIAE. [Internet] [Masters thesis]. Royal Military College of Canada; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/402.
Council of Science Editors:
Gharib N. DISCOVERY AND CHARACTERISATION OF YEAST FERRITIN (yFer1) IN
SACCHAROMYCES CEREVISIAE. [Masters Thesis]. Royal Military College of Canada; 2015. Available from: http://hdl.handle.net/11264/402
26.
Surmita, Paul.
PHYTOEXTRACTION OF WEATHERED DDT-CONTAMINATED SOIL AT POINT
PELEE NATIONAL PARK USING NATIVE AND NATURALIZED WEED
SPECIES.
Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2015, Royal Military College of Canada
URL: http://hdl.handle.net/11264/401
► Phytoextraction is a potential remediation technique for low to moderate levels of dichlorodiphenyltrichloroethane (DDT)-contaminated soil. Identification of new species as phytoextractors of DDT is a…
(more)
▼ Phytoextraction is a potential remediation technique
for low to moderate levels of dichlorodiphenyltrichloroethane
(DDT)-contaminated soil. Identification of new species as
phytoextractors of DDT is a vital step in establishing
phytoextraction as a commercially-viable and environmental-friendly
remediation technique. Thirteen of native and naturalized weed
species were investigated both in field and greenhouse studies
using DDT-contaminated soil from Point Pelee National Park (PPNP),
ON, Canada. A screening study established the extraction
capabilities of nine wild growing species and determined that four
of these Trifolium pratense, Symphyotrichum novae-angliae, Solanum
ptycanthum Dun. Verbascum thapsus have a higher DDT extraction
potential than the known DDT phytoextractor Cucurbita. pepo ssp.
pepo cv. Howden assuming plants are grown at optimal densities. A
subsequent field trial was conducted using three native weed
species and C. pepo at PPNP in low (291 ng/g), moderate (5083 ng/g)
and high (10192 ng/g) DDT-contaminated sites. This study determined
that two native species i.e. Schizachyrium scoparium and Panicum
virgatum had higher shoot DDT extractions than C. pepo at the high
DDT-contaminated site. An interesting and unique finding was that,
DDT uptake of C. pepo is concentration dependent with a maximum
uptake observed at a threshold soil DDT ~5000 ng/g. In contrast,
such threshold soil DDT concentration was absent for weed species
where uptake increases linearly with increasing soil DDT
concentration. A final greenhouse study using four perennial native
and naturalized weed species in low (2300 ng/g) and high (17500
ng/g) DDT-contaminated soils collected from PPNP, further
demonstrated that weed species are capable of significant DDT
phytoextraction Trifolium pratense in both low and high
DDT-contaminated soil regardless of growing conditions exceeded C.
pepo extraction by considering optimum planting density. Hence, it
can be summarized that native (or naturalized) weed species show
significant potential/prospect as phytoextractors of DDT,
especially at ecologically sensitive sites where it is important to
minimize habitat disturbance. It is noted that this is the first
comprehensive study of DDT phytoextraction using of native weed
species.
La phytoextraction est une technique pouvant remédier
les sols contaminés avec des niveaux faibles à modérés de
dichlorodiphenyltrichloroéthane (DDT). L’identification de
nouvelles espèces ayant la capacité de phytoextraire le DDT est une
étape essentielle dans l'établissement de la phytoextraction comme
technique de remédiation commercialement viable et respectueuse de
l'environnement. Treize espèces d’herbes indigènes et naturalisées
ont été étudiées dans des essais in-situ et dans une serre avec des
sols contaminés au DDT provenant du parc national de la
Pointe-Pelée (PNPP), ON, Canada. Une évaluation préalable a permis
de déterminer les capacités d'extraction de neuf espèces sauvages
et a démontré que quatre de ces espèces, Trifolium pratense,
Symphyotrichum…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Prof. Barbara, Zeeb, Dr. Allison, Rutter.
Subjects/Keywords: Phytoextraction; Dichlorodiphenyltrichloroethane (DDT); Point Pelee National Park (PPNP); Cucurbita pepo cv. Howden; Wild grown native weed species
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Surmita, P. (2015). PHYTOEXTRACTION OF WEATHERED DDT-CONTAMINATED SOIL AT POINT
PELEE NATIONAL PARK USING NATIVE AND NATURALIZED WEED
SPECIES. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/401
Chicago Manual of Style (16th Edition):
Surmita, Paul. “PHYTOEXTRACTION OF WEATHERED DDT-CONTAMINATED SOIL AT POINT
PELEE NATIONAL PARK USING NATIVE AND NATURALIZED WEED
SPECIES.” 2015. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/401.
MLA Handbook (7th Edition):
Surmita, Paul. “PHYTOEXTRACTION OF WEATHERED DDT-CONTAMINATED SOIL AT POINT
PELEE NATIONAL PARK USING NATIVE AND NATURALIZED WEED
SPECIES.” 2015. Web. 02 Mar 2021.
Vancouver:
Surmita P. PHYTOEXTRACTION OF WEATHERED DDT-CONTAMINATED SOIL AT POINT
PELEE NATIONAL PARK USING NATIVE AND NATURALIZED WEED
SPECIES. [Internet] [Masters thesis]. Royal Military College of Canada; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/401.
Council of Science Editors:
Surmita P. PHYTOEXTRACTION OF WEATHERED DDT-CONTAMINATED SOIL AT POINT
PELEE NATIONAL PARK USING NATIVE AND NATURALIZED WEED
SPECIES. [Masters Thesis]. Royal Military College of Canada; 2015. Available from: http://hdl.handle.net/11264/401
27.
Fisher, Brent.
Renewal Theory: Simple and Elegant Derivations.
Degree: MSc (MS/Maîtrise ès sciences), Mathematics/Mathématiques, 2015, Royal Military College of Canada
URL: http://hdl.handle.net/11264/421
► This thesis comprises two principal areas of research: new derivations of asymptotic results in renewal theory and the computation of the distribution for the number…
(more)
▼ This thesis comprises two principal areas of research:
new derivations of asymptotic results in renewal theory and the
computation of the distribution for the number of renewals with
bulk arrivals.
A simple and elegant solution to determine the
asymptotic results for the renewal density as well as for the first
and second moments of the number of renewals for the discrete-time
renewal process is presented. Using generating functions, the
difficult-to-determine constant term in the second moment is also
addressed. A similar process using Laplace transforms (LTs) is
likewise employed to determine analogous results in continuous
time. Further, the solution is extended to determine the asymptotic
results for the first and second moments of the number of bulk
renewals as well.
The distribution of the number of renewals for
both single and bulk arrivals in continuous time is calculated
using an algorithm employed through MAPLE. These numerical results
are acquired by considering rational as well as non-rational LTs
and Padé-approximated LTs for the distributions of inter-renewal
times. The asymptotic results derived in the first part of this
thesis then help to validate the accuracy of these numerical
results.
Cette thèse comprend deux domaines de recherche
principaux: de nouvelles dérivations de résultats asymptotiques
pour la théorie du renouvellement, et le calcul de la distribution
pour le nombre de renouvellements pour les arrivées en groupes.
Une solution simple et élégante pour déterminer les résultats
asymptotiques pour la densité de renouvellement ainsi que pour les
premiers et deuxièmes moments du nombre de renouvellements pour le
processus de renouvellement en temps discret est présentée. En
utilisant des fonctions génératrices, le terme constant qui est
difficile à déterminer pour le second moment est également résolu.
Un processus similaire utilisant les transformations de Laplace
(LTs) est également utilisé pour déterminer des résultats
similaires en temps continu. De plus, la solution est poursuivie
afin de déterminer les résultats asymptotiques pour les premiers et
deuxièmes moments du nombre de renouvellements en groupes.
La
distribution du nombre de renouvellements pour les arrivées simples
et en groupes en temps continu est calculée en utilisant un
algorithme fait avec MAPLE. Ces résultats numériques sont acquis en
considérant les LTs rationnelles et non-rationnelles ainsi que les
LTs de Padé pour les distributions des intervalles de
renouvellement. Les résultats asymptotiques dérivés dans la
première partie de cette thèse aident ensuite à valider le calcul
d’incertitude de ces résultats numériques.
Graduate
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Chaudhry, Mohan.
Subjects/Keywords: Renewal theory; Numerical results; Asymptotic results; Bulk arrivals; Generating functions; Laplace transforms
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fisher, B. (2015). Renewal Theory: Simple and Elegant Derivations. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/421
Chicago Manual of Style (16th Edition):
Fisher, Brent. “Renewal Theory: Simple and Elegant Derivations.” 2015. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/421.
MLA Handbook (7th Edition):
Fisher, Brent. “Renewal Theory: Simple and Elegant Derivations.” 2015. Web. 02 Mar 2021.
Vancouver:
Fisher B. Renewal Theory: Simple and Elegant Derivations. [Internet] [Masters thesis]. Royal Military College of Canada; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/421.
Council of Science Editors:
Fisher B. Renewal Theory: Simple and Elegant Derivations. [Masters Thesis]. Royal Military College of Canada; 2015. Available from: http://hdl.handle.net/11264/421
28.
Tayeb, Michelle.
DEVELOPMENT OF RAPID METHODOLOGIES FOR THE DETERMINATION OF
STRONTIUM-90 IN WATER USING TRIPLE-TO-DOUBLE COINCIDENCE RATIO
(TDCR) ČERENKOV COUNTING AND LIQUID SCINTILLATION ASSAY
TECHNIQUES.
Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2015, Royal Military College of Canada
URL: http://hdl.handle.net/11264/461
► Strontium-90 (90Sr) is an anthropogenic contaminant that is present in the environment from spent nuclear fuel, radioactive waste, and atmospheric fallout from nuclear weapon tests…
(more)
▼ Strontium-90 (90Sr) is an anthropogenic contaminant
that is present in the environment from spent nuclear fuel,
radioactive waste, and atmospheric fallout from nuclear weapon
tests and major nuclear incidents. Strontium-90 is one of the most
hazardous and radiotoxic radioisotopes, due to its relative long
half-life and high mobility in the environment. Because of its
significant health hazards, 90Sr needs to be measured accurately.
The radioanalytical capabilities for the determination of 90Sr in
the environment are challenged by matrix interferences, which often
result in less effective, long, and tedious determination methods.
Moreover, a number of shortcomings were found in the current
seawater 90Sr methods following the Fukushima Daiichi nuclear power
accident in March 2011. Thus, the need for effective, rapid, and
simple procedures is on-going.
In the present dissertation, the
advancements in modern technologies were used to minimize some of
the gaps in current radioanalytical capabilities used for the
determination of 90Sr in water. The present work considered
techniques at moderate and low levels of detection, and in each
case undertook to produce methodologies with increased speed of
analysis and greater efficiency. A triple-to-double coincidence
ratio (TDCR) Čerenkov counting technique using a Hidex liquid
scintillation counter was developed for the indirect determination
of 90Sr from 90Y at equilibrium activity concentrations of
90Sr-90Y. The technique was fast and simple with excellent
performance test results. For low level 90Sr determination in
water, pre-concentration using semi-selective co-precipitation and
highly selective extraction chromatography techniques were used.
Freshwater 90Sr was determined directly as well as indirectly from
90Sr-90Y equilibrium activity concentrations. The method employed
(1) co-precipitation of freshwater 90Sr-90Y using calcium phosphate
in alkaline conditions; (2) sequential purification of 90Sr and 90Y
on Sr-Resin® and DGA-N® extraction chromatography columns,
respectively; and (3) detection of 90Sr by liquid scintillation
assay (LSA) at two different time intervals and that of 90Y using
both Čerenkov counting and LSA. Seawater 90Sr was determined
indirectly from 90Y at equilibrium activity concentrations of
90Sr-90Y. The method used (1) co-precipitation of seawater 90Y
using calcium carbonate and hydrous titanium oxide in alkaline
conditions; (2) purification of 90Y on DGA-N® resin; and (3)
detection of 90Y using both Čerenkov counting and LSA. The methods’
performance evaluation demonstrated excellent agreement between
measured and expected activities of spiked 90Sr-90Y standard
solution. Effective implementation of the freshwater method on
natural water samples containing a wide range of 90Sr-90Y
concentrations was also achieved.
Le strontium-90 (90Sr) est un contaminant
anthropogénique présent dans l’environnement et provenant de
combustible nucléaire usé, de déchets radioactifs, et de retombées
atmosphériques des essais d’armements nucléaires et des…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Kelly, David, Corcoran, Emily, Xiongxin, Dai.
Subjects/Keywords: Strontium-90; Yttrium-90; Seawater; Cerenkov counting; Liquid scintillation counting; Fukushima
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tayeb, M. (2015). DEVELOPMENT OF RAPID METHODOLOGIES FOR THE DETERMINATION OF
STRONTIUM-90 IN WATER USING TRIPLE-TO-DOUBLE COINCIDENCE RATIO
(TDCR) ČERENKOV COUNTING AND LIQUID SCINTILLATION ASSAY
TECHNIQUES. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/461
Chicago Manual of Style (16th Edition):
Tayeb, Michelle. “DEVELOPMENT OF RAPID METHODOLOGIES FOR THE DETERMINATION OF
STRONTIUM-90 IN WATER USING TRIPLE-TO-DOUBLE COINCIDENCE RATIO
(TDCR) ČERENKOV COUNTING AND LIQUID SCINTILLATION ASSAY
TECHNIQUES.” 2015. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/461.
MLA Handbook (7th Edition):
Tayeb, Michelle. “DEVELOPMENT OF RAPID METHODOLOGIES FOR THE DETERMINATION OF
STRONTIUM-90 IN WATER USING TRIPLE-TO-DOUBLE COINCIDENCE RATIO
(TDCR) ČERENKOV COUNTING AND LIQUID SCINTILLATION ASSAY
TECHNIQUES.” 2015. Web. 02 Mar 2021.
Vancouver:
Tayeb M. DEVELOPMENT OF RAPID METHODOLOGIES FOR THE DETERMINATION OF
STRONTIUM-90 IN WATER USING TRIPLE-TO-DOUBLE COINCIDENCE RATIO
(TDCR) ČERENKOV COUNTING AND LIQUID SCINTILLATION ASSAY
TECHNIQUES. [Internet] [Masters thesis]. Royal Military College of Canada; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/461.
Council of Science Editors:
Tayeb M. DEVELOPMENT OF RAPID METHODOLOGIES FOR THE DETERMINATION OF
STRONTIUM-90 IN WATER USING TRIPLE-TO-DOUBLE COINCIDENCE RATIO
(TDCR) ČERENKOV COUNTING AND LIQUID SCINTILLATION ASSAY
TECHNIQUES. [Masters Thesis]. Royal Military College of Canada; 2015. Available from: http://hdl.handle.net/11264/461
29.
Andrews, Madison.
Delayed Neutron & Gamma Measurements of Special Nuclear
Materials, their Monte Carlo Simulations, and Applications.
Degree: PhD, Chemistry and Chemical Engineering/Chimie et génie
chimique, 2015, Royal Military College of Canada
URL: http://hdl.handle.net/11264/501
► Special nuclear materials (SNMs) are those which contain 233U, 235U and 239Pu. They are safeguarded by the International Atomic Energy Agency (IAEA) in addition to…
(more)
▼ Special nuclear materials (SNMs) are those which
contain 233U, 235U and 239Pu. They are safeguarded by the
International Atomic Energy Agency (IAEA) in addition to individual
governmental organisations. Nuclear forensic analysis (NFA) is
concerned with the characterisation and attribution of illicit
nuclear materials, especially uranium and plutonium. Physical,
chemical, and isotopic characteristics are determined with
instrumentation that is ideally rapid, non-destructive, and
sensitive. Delayed neutron and gamma emissions from fissioned
isotopes have signature yields, energies, and temporal behaviour,
their measurement allows the rapid characterisation of SNM content
in a variety of matrices.
Previous work developed a delayed
neutron counting (DNC) prototype at the Royal Military College of
Canada (RMCC). This system sent samples containing 235U content to
a SLOWPOKE-2 reactor where they underwent fission. Samples were
then sent via pneumatic transfer to the counting arrangement,
containing six helium-3 detectors, which recorded the delayed
neutron emissions. This undertaking began with the attribution of
the time-dependent neutron background present in the SLOWPOKE-2
site used for DNC irradiations; the contribution of this uranium
contamination was lowered from a mass equivalent of 120 to 50 ng
per vial. Subsequent delayed neutron measurements of samples
containing mixtures of 233U and 235U were used to determine their
relative ratios (in %) with an average absolute error of ± 4 %.
This thesis also included the development of a Delayed Neutron and
Gamma Counting (DNGC) system intended to contribute to nuclear
forensics instrumentation available to the Canadian Department of
National Defence. The delayed gammas emitted from SNM were used in
complement with delayed neutron measurements in an example which
detected, identified, and quantified 233U content with an average
relative error and accuracy of -2.2 and 1.5 %, respectively.
Throughout system development detailed measurements of both delayed
neutron and delayed gammas from microgram quantities of 233U, 235U,
and 239Pu were performed. These were used for comparison to the
simulations of delayed particle emissions and detection from the
Monte Carlo code MCNP6, in collaboration with Los Alamos National
Laboratory. One of the options available in MCNP6 for delayed
neutron emissions was found to be discrepant with measurements ≥
100 s after fission. These DN comparisons were released as a MCNP6
test suite to all users; the most recent release of MCNP6.1.1β
resolves many of the observed discrepancies found by this work.
MCNP6 simulations were also used to predict expected delayed gamma
signatures useful for NFA, and compared to DNGC system measurements
in a final study.
Les matériaux nucléaires spéciaux (MNS) sont ceux qui
contiennent les isotopes 233U, 235U et 239Pu. Ils sont réglementés
par l’Agence Internationale de l’Énergie Atomique (AIEA) en plus
des organisations gouvernementales individuelles. L’analyse
nucléaire légale (ANL) se préoccupe de la…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Kelly, David, Corcoran, Emily.
Subjects/Keywords: delayed neutron; delayed gamma; nuclear forensics; special nuclear material; helium-3 detectors; high purity germanium detector
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Andrews, M. (2015). Delayed Neutron & Gamma Measurements of Special Nuclear
Materials, their Monte Carlo Simulations, and Applications. (Doctoral Dissertation). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/501
Chicago Manual of Style (16th Edition):
Andrews, Madison. “Delayed Neutron & Gamma Measurements of Special Nuclear
Materials, their Monte Carlo Simulations, and Applications.” 2015. Doctoral Dissertation, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/501.
MLA Handbook (7th Edition):
Andrews, Madison. “Delayed Neutron & Gamma Measurements of Special Nuclear
Materials, their Monte Carlo Simulations, and Applications.” 2015. Web. 02 Mar 2021.
Vancouver:
Andrews M. Delayed Neutron & Gamma Measurements of Special Nuclear
Materials, their Monte Carlo Simulations, and Applications. [Internet] [Doctoral dissertation]. Royal Military College of Canada; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/501.
Council of Science Editors:
Andrews M. Delayed Neutron & Gamma Measurements of Special Nuclear
Materials, their Monte Carlo Simulations, and Applications. [Doctoral Dissertation]. Royal Military College of Canada; 2015. Available from: http://hdl.handle.net/11264/501
30.
Sellers, Madison Theresa.
A Delayed Neutron Counting System for the Analysis of
Special Nuclear Materials.
Degree: MASc (Master of Applied Science/Maîtrise ès sciences
appliquées), Chemistry and Chemical Engineering/Chimie et génie
chimique, 2015, Royal Military College of Canada
URL: http://hdl.handle.net/11264/502
► Nuclear forensic analysis is a modern science that uses numerous analytical techniques to identify and attribute nuclear materials in the event of a nuclear explosion,…
(more)
▼ Nuclear forensic analysis is a modern science that
uses numerous analytical techniques to identify and attribute
nuclear materials in the event of a nuclear explosion, radiological
terrorist attack or the interception of illicit nuclear material
smuggling. The Canadian Department of National Defence has
participated in recent international exercises that have
highlighted the Nation’s requirement to develop nuclear forensics
expertise, protocol and capabilities, specifically pertaining to
the analysis of special nuclear materials (SNM). A delayed neutron
counting (DNC) system has been designed and established at the
Royal Military College of Canada (RMC) to enhance the Government’s
SNM analysis capabilities. This analytical technique complements
those already at RMC by providing a rapid and non-destructive
method for the analysis of the fissile isotopes of both uranium (U)
and plutonium (Pu).
The SLOWPOKE-2 reactor at RMC produces a
predominately thermal neutron flux. These neutrons induce fission
in the SNM isotopes 233U, 235U and 239Pu releasing prompt fast
neutrons, energy and radioactive fission fragments. Some of these
fission fragments undergo β- decay and subsequently emit neutrons,
which can be recorded by an array of sensitive 3He detectors. The
significant time period between the fission process and the release
of these neutrons results in their identification as ‘delayed
neutrons’. The recorded neutron spectrum varies with time and the
count rate curve is unique to each fissile isotope. In-house
software, developed by this project, can analyze this delayed
neutron curve and provides the fissile mass in the sample.
Extensive characterization of the DNC system has been performed
with natural U samples with 235U content ranging from 2 – 7 μg. The
system efficiency and dead time behaviour determined by the natural
uranium sample analyses were validated by depleted uranium samples
with similar quantities of 235U resulting in a typical relative
error of 3.6%. The system has accurately determined 235U content
over three orders of magnitude with 235U amounts as low as 10 ng.
The results have also been proven to be independent of small
variations in total analyte volume and geometry, indicating that it
is an ideal technique for the analysis of samples containing SNM in
a variety of different matrices. The Analytical Sciences Group at
RMC plans to continue DNC system development to include 233U and
239Pu analysis and mixtures of SNM isotopes.
L’analyse nucléaire légale est une science moderne qui
utilise plusieurs techniques d’analyse pour identifier et attribuer
des matériaux nucléaires dans le cas d’explosion nucléaire,
d’attaque terroriste radiologique ou de la découverte de
contrebande illicite de matériaux nucléaires. Le Ministère de la
défense nationale du Canada a participé récemment à des exercices
internationaux qui ont mis en lumière le besoin de notre pays de
développer le savoir-faire en analyse nucléaire légale, ainsi que
les protocoles et les capacités, plus spécifiquement pertinents à
l’analyse…
Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Kelly, David, Corcoran, Emily.
Subjects/Keywords: delayed neutron; special nuclear material; activation analysis; nuclear forensics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sellers, M. T. (2015). A Delayed Neutron Counting System for the Analysis of
Special Nuclear Materials. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/502
Chicago Manual of Style (16th Edition):
Sellers, Madison Theresa. “A Delayed Neutron Counting System for the Analysis of
Special Nuclear Materials.” 2015. Masters Thesis, Royal Military College of Canada. Accessed March 02, 2021.
http://hdl.handle.net/11264/502.
MLA Handbook (7th Edition):
Sellers, Madison Theresa. “A Delayed Neutron Counting System for the Analysis of
Special Nuclear Materials.” 2015. Web. 02 Mar 2021.
Vancouver:
Sellers MT. A Delayed Neutron Counting System for the Analysis of
Special Nuclear Materials. [Internet] [Masters thesis]. Royal Military College of Canada; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/11264/502.
Council of Science Editors:
Sellers MT. A Delayed Neutron Counting System for the Analysis of
Special Nuclear Materials. [Masters Thesis]. Royal Military College of Canada; 2015. Available from: http://hdl.handle.net/11264/502
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