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Anna University
1.
Ganesh S.
Analysis of flow between parallel Plates;.
Degree: Analysis of flow between parallel Plates, 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/27649
► The objective of the thesis is to investigate the unsteady stokes flow of newlineviscous fluid the behaviour of the steady and unsteady flows in the…
(more)
▼ The objective of the thesis is to investigate the
unsteady stokes flow of newlineviscous fluid the behaviour of the
steady and unsteady flows in the presence newlineof magnetic forces
and the flow of second grade fluid between parallel porous
newlineplates using analytical and numerical techniques newlineThe
flow is assumed to be laminar, incompressible and viscous The
newlineNavier Stokes equations are assumed for the viscous flow the
second grade newlinefluid flow problems and the magnetic effects
are also considered in some of newlinethe problems for both steady
and unsteady cases Exact solutions have been newlinefound out for
some flow problems Approximate analytical solution has been
newlineobtained using perturbation technique and the numerical
solution is being newlinediscussed The Runge Kutta Gill s method is
applied for finding out the newlinenumerical solutions newline
newline
reference p136-140.
Advisors/Committee Members: Krishnambal S.
Subjects/Keywords: Numerical techniques; Runge Kutta Gill
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
S, G. (2014). Analysis of flow between parallel Plates;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/27649
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
S, Ganesh. “Analysis of flow between parallel Plates;.” 2014. Thesis, Anna University. Accessed April 17, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/27649.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
S, Ganesh. “Analysis of flow between parallel Plates;.” 2014. Web. 17 Apr 2021.
Vancouver:
S G. Analysis of flow between parallel Plates;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Apr 17].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27649.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
S G. Analysis of flow between parallel Plates;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/27649
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University
2.
Sun, Huan.
AN ENERGETIC VARIATIONAL APPROACH TO MODELING COMPLEX FLUIDS AND ITS NUMERICAL SIMULATIONS
.
Degree: 2011, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/12057
► In this dissertation we present an energetic variational approach to modeling complex fluids. The principle of least action or the principle of virtual work is…
(more)
▼ In this dissertation we present an energetic variational approach to modeling complex fluids.
The principle of least action or the principle of virtual work is applied to derive the conservative (Hamiltonian) part of the system, including the non-Newtonian stress tensor. This follows by an application of Onsager's principle of minimum dissipation, which introduces the
dissipative terms in the resulting time-dependent system of coupled partial differential equations. The final coupled system is the result of a total force balance and the dynamics for the microscopic
configurations/patterns.
An existence result of one particular hydrodynamical system is presented in the third chapter. The system is derived from the energetic variational approach and is essentially a simplified Ericksen-Leslie model for nematic liquid crystals. The key point in the mathematical proof is to take advantage of a high order energy law of the system, which provides the needed regularity for the local solutions. Other
techniques include a modified Galerkin approximation, some interpolating inequalities of Ladyzhenskaya's type, and an Aubin-Lions compactness argument.
We also applied our energetic variational approach to model mixtures involving multiple (two or more) different phases. To demonstrate
the applicability of the proposed model, a few two-dimensional simulations have been carried out, including (1) the force balance at the triple line in equilibrium, (2) a rising bubble penetrating a fluid-fluid interface, and (3) a solid particle falling in a binary fluid. The effects of slip at solid surface have been examined in connection with contact line motion and a pinch-off phenomenon.
Advisors/Committee Members: Chun Liu And James Brannick, Dissertation Advisor/Co-Advisor, Chun Liu, Committee Chair/Co-Chair, James Joseph Brannick, Committee Chair/Co-Chair, Xiantao Li, Committee Member, Yuxi Zheng, Committee Member, Ludmil Tomov Zikatanov, Committee Member, Ralph H Colby, Committee Member.
Subjects/Keywords: PDE; variational techniques; complex fluids; numerical simulations
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sun, H. (2011). AN ENERGETIC VARIATIONAL APPROACH TO MODELING COMPLEX FLUIDS AND ITS NUMERICAL SIMULATIONS
. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/12057
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sun, Huan. “AN ENERGETIC VARIATIONAL APPROACH TO MODELING COMPLEX FLUIDS AND ITS NUMERICAL SIMULATIONS
.” 2011. Thesis, Penn State University. Accessed April 17, 2021.
https://submit-etda.libraries.psu.edu/catalog/12057.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sun, Huan. “AN ENERGETIC VARIATIONAL APPROACH TO MODELING COMPLEX FLUIDS AND ITS NUMERICAL SIMULATIONS
.” 2011. Web. 17 Apr 2021.
Vancouver:
Sun H. AN ENERGETIC VARIATIONAL APPROACH TO MODELING COMPLEX FLUIDS AND ITS NUMERICAL SIMULATIONS
. [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Apr 17].
Available from: https://submit-etda.libraries.psu.edu/catalog/12057.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sun H. AN ENERGETIC VARIATIONAL APPROACH TO MODELING COMPLEX FLUIDS AND ITS NUMERICAL SIMULATIONS
. [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/12057
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University
3.
Ramanibai, V.
Computationally simplified numerical algorithms for
certain Engineering problems; -.
Degree: Information and Communication
Engineering, 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/25321
► newlineSolving system of linear algebraic equations determining the newlineroots of a real algebraic polynomial and evaluating determinant value of newlinea matrix are ancient problems in…
(more)
▼ newlineSolving system of linear algebraic equations
determining the newlineroots of a real algebraic polynomial and
evaluating determinant value of newlinea matrix are ancient
problems in engineering applications however there newlineis an
increasing demand for computationally stable and efficient
newlinenumerical algorithms converging to the actual results of
these problems newlineThe proposed research provides novel
techniques to enhance newlineconvergence rate of the numerical
algorithms to solve these engineering newlineproblems in terms of
accuracy and computational time newlineThe condition of these
conventional mathematical problems newlinerelates to their
sensitivity to the input perturbation A computation is
newlinenumerically unstable if the uncertainty of the input values
is grossly newlinemagnified by the numerical method When the
results of numerical newlinecomputations are extremely critical and
cause loss of human life or have newlinesevere economic or social
implication it is appropriate to take special newlineprecautions
Therefore handling Ill conditioning of these problems and
newlineapplying soft computing technique for optimization have been
newlineincorporated in the proposed algorithms newline
newline
appendix p.142-158, reference
p.159-168
Advisors/Committee Members: Sivanandam, S N.
Subjects/Keywords: Computer science and engineering; Novel techniques; Numerical computations
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ramanibai, V. (2014). Computationally simplified numerical algorithms for
certain Engineering problems; -. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/25321
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ramanibai, V. “Computationally simplified numerical algorithms for
certain Engineering problems; -.” 2014. Thesis, Anna University. Accessed April 17, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/25321.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ramanibai, V. “Computationally simplified numerical algorithms for
certain Engineering problems; -.” 2014. Web. 17 Apr 2021.
Vancouver:
Ramanibai V. Computationally simplified numerical algorithms for
certain Engineering problems; -. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Apr 17].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/25321.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ramanibai V. Computationally simplified numerical algorithms for
certain Engineering problems; -. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/25321
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
4.
Khan, Mohammad Firdosh.
Numerical techniques in variational
inequalities;.
Degree: Mathematics, 1996, Aligarh Muslim University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/52260
Abstract not available newline
newline
Bibliography p. 79-93
Advisors/Committee Members: Siddiqi, Abul Hasan.
Subjects/Keywords: Variational; Techniques; Inequalities;
Numerical
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Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Khan, M. F. (1996). Numerical techniques in variational
inequalities;. (Thesis). Aligarh Muslim University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/52260
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Khan, Mohammad Firdosh. “Numerical techniques in variational
inequalities;.” 1996. Thesis, Aligarh Muslim University. Accessed April 17, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/52260.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Khan, Mohammad Firdosh. “Numerical techniques in variational
inequalities;.” 1996. Web. 17 Apr 2021.
Vancouver:
Khan MF. Numerical techniques in variational
inequalities;. [Internet] [Thesis]. Aligarh Muslim University; 1996. [cited 2021 Apr 17].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/52260.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Khan MF. Numerical techniques in variational
inequalities;. [Thesis]. Aligarh Muslim University; 1996. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/52260
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Plymouth
5.
Dellaportas, Petros.
Imbedded integration rules and their applications in Bayesian analysis.
Degree: PhD, 1990, University of Plymouth
URL: http://hdl.handle.net/10026.1/2067
► This thesis deals with the development and application of numerical integration techniques for use in Bayesian Statistics. In particular, it describes how imbedded sequences of…
(more)
▼ This thesis deals with the development and application of numerical integration techniques for use in Bayesian Statistics. In particular, it describes how imbedded sequences of positive interpolatory integration rules (PIIR's) obtained from Gauss-Hermite product rules can extend the applicability and efficiency of currently available numerical methods. The numerical strategy suggested by Naylor and Smith (1982) is reviewed, criticised and applied to some examples with real and artificial data. The performance of this strategy is assessed from the viewpoint of 3 criteria: reliability, efficiency and accuracy. The imbedded sequences of PIIR’s are introduced as an alternative and an extension to the above strategy for two major reasons. Firstly, they provide a rich class of spatially ditributed rules which are particularly useful in high dimensions. Secondly, they provide a way of producing more efficient integration strategies by enabling approximations to be updated sequentially through the addition of new nodes at each step rather than through changing to a completely new set of nodes. Finally, the Improvement in the reliability and efficiency achieved by the adaption of an integration strategy based on PIIR's is demonstrated with various illustrative examples. Moreover, it is directly compared with the Gibbs sampling approach introduced recently by Gelfand and Smith (1988).
Subjects/Keywords: 519; Numerical integration techniques
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dellaportas, P. (1990). Imbedded integration rules and their applications in Bayesian analysis. (Doctoral Dissertation). University of Plymouth. Retrieved from http://hdl.handle.net/10026.1/2067
Chicago Manual of Style (16th Edition):
Dellaportas, Petros. “Imbedded integration rules and their applications in Bayesian analysis.” 1990. Doctoral Dissertation, University of Plymouth. Accessed April 17, 2021.
http://hdl.handle.net/10026.1/2067.
MLA Handbook (7th Edition):
Dellaportas, Petros. “Imbedded integration rules and their applications in Bayesian analysis.” 1990. Web. 17 Apr 2021.
Vancouver:
Dellaportas P. Imbedded integration rules and their applications in Bayesian analysis. [Internet] [Doctoral dissertation]. University of Plymouth; 1990. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/10026.1/2067.
Council of Science Editors:
Dellaportas P. Imbedded integration rules and their applications in Bayesian analysis. [Doctoral Dissertation]. University of Plymouth; 1990. Available from: http://hdl.handle.net/10026.1/2067

Colorado School of Mines
6.
Zhou, Mengnan.
Optimization of well configuration for a sedimentary enhanced geothermal reservoir.
Degree: MS(M.S.), Petroleum Engineering, 2016, Colorado School of Mines
URL: http://hdl.handle.net/11124/170246
► The extraction of geothermal energy in the form of hot water from sedimentary rock formations could expand the current geothermal energy resources toward new regions.…
(more)
▼ The extraction of geothermal energy in the form of hot water from sedimentary rock formations could expand the current geothermal energy resources toward new regions. In sedimentary geothermal reservoirs with low permeability, enhancement
techniques (e.g., well hydraulic stimulation) are needed to improve the hydraulic connection between the wells to achieve commercial production/injection rates (Cho et al., 2015). The design of the well configuration was investigated in this research work. The performance of the sedimentary geothermal reservoir was evaluated using
numerical reservoir modeling, which allowed studying different well configurations and productivity enhancement
techniques. This research develops a methodology to maximize thermal recovery from the geothermal system. The objective is to maximize the well productivity/injectivity index by systematically changing the value of influencing variables of the system,
subject to a constraint of thermal breakthrough time greater than or equal to 30 years (i.e., time required by a commercial successful project). The reservoir simulation cases are classified into four main models based on well configuration, shown in Figure 3.3: one vertical well doublet system with hydraulic fractures, and three horizontal well configurations with open-hole completion, longitudinal fractures and transverse fractures, respectively. Since permeability is the fundamental property which decides the necessity of enhancement
techniques, the proper permeability estimation is selected first. Based on that and sensitivity analysis of the variables, including well type (vertical or horizontal), well spacing, length of horizontal section, hydraulic fracture direction, fracture half-length, fracture spacing, dimensionless fracture conductivity and ratio of reservoir vertical permeability to horizontal permeability, the most efficient well configuration and the corresponding influential variables are determined. The application of this methodology provides the procedure to identify the required hydraulic fracture parameters for each well configuration that maximizes the geothermal energy recovery. The final step is to identify the optimization of well configuration. Surface response models based on the multiple linear regression method are built to analyze the change of reservoir thermal evolution and flow behavior in terms of influential parameters in well configuration. A horizontal well system with longitudinal fractures is the most favorable in pursuing a long thermal breakthrough time. A horizontal well system with multi-stage transverse fractures is most efficient to increase the productivity index and injectivity index. For optimal well configuration designs in both well configurations, the well spacing is assigned to the minimum value, and the well horizontal length can be chosen as long as reservoir and technique permits. This design achieves minimum the thermal breakthrough time requirement and maximum productivity and injectivity indices.
Advisors/Committee Members: Zerpa, Luis E. (advisor), Eustes, Alfred William (committee member), Augustine, Chad (committee member).
Subjects/Keywords: numerical modeling; optimization; reservoir enhancement techniques; sedimentary enhanced geothermal system
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhou, M. (2016). Optimization of well configuration for a sedimentary enhanced geothermal reservoir. (Masters Thesis). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/170246
Chicago Manual of Style (16th Edition):
Zhou, Mengnan. “Optimization of well configuration for a sedimentary enhanced geothermal reservoir.” 2016. Masters Thesis, Colorado School of Mines. Accessed April 17, 2021.
http://hdl.handle.net/11124/170246.
MLA Handbook (7th Edition):
Zhou, Mengnan. “Optimization of well configuration for a sedimentary enhanced geothermal reservoir.” 2016. Web. 17 Apr 2021.
Vancouver:
Zhou M. Optimization of well configuration for a sedimentary enhanced geothermal reservoir. [Internet] [Masters thesis]. Colorado School of Mines; 2016. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/11124/170246.
Council of Science Editors:
Zhou M. Optimization of well configuration for a sedimentary enhanced geothermal reservoir. [Masters Thesis]. Colorado School of Mines; 2016. Available from: http://hdl.handle.net/11124/170246

Virginia Tech
7.
Camphouse, R. Chris.
Modeling and Numerical Approximations of Optical Activity in the Chemical Oxygen-Iodine Laser.
Degree: PhD, Mathematics, 2001, Virginia Tech
URL: http://hdl.handle.net/10919/28640
► The chemical oxygen-iodine laser (COIL) has several important military and industrial applications. The concern of this work is do develop a partial differential equation model…
(more)
▼ The chemical oxygen-iodine laser (COIL) has several important military and industrial applications. The concern of this work is do develop a partial differential equation model describing optical behavior in the COIL. Optical behavior of the COIL has traditionally been investigated via a ray tracing method. Photons are represented as discrete particles, and their behavior is described by the geometry of the system. We develop an optical model wherein photons have a wave description. In order to construct the mathematical model, we utilize the theory of paraxial wave optics and Gaussian beams. Doing so allows us to incorporate physical effects such as diffusion/diffraction and refraction into the model. After describing the optical model, we present
numerical methods for obtaining approximate solutions to the model in the cases of one and two transverse directions. Results are presented illustrating the efficacy of the
numerical methods.
Advisors/Committee Members: Burns, John A. (committeechair), Rogers, Robert C. (committee member), King, Belinda B. (committee member), Borggaard, Jeffrey T. (committee member), Hagedorn, George A. (committee member), Cliff, Eugene M. (committeecochair).
Subjects/Keywords: Numerical Techniques; Crank-Nicholson
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Camphouse, R. C. (2001). Modeling and Numerical Approximations of Optical Activity in the Chemical Oxygen-Iodine Laser. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/28640
Chicago Manual of Style (16th Edition):
Camphouse, R Chris. “Modeling and Numerical Approximations of Optical Activity in the Chemical Oxygen-Iodine Laser.” 2001. Doctoral Dissertation, Virginia Tech. Accessed April 17, 2021.
http://hdl.handle.net/10919/28640.
MLA Handbook (7th Edition):
Camphouse, R Chris. “Modeling and Numerical Approximations of Optical Activity in the Chemical Oxygen-Iodine Laser.” 2001. Web. 17 Apr 2021.
Vancouver:
Camphouse RC. Modeling and Numerical Approximations of Optical Activity in the Chemical Oxygen-Iodine Laser. [Internet] [Doctoral dissertation]. Virginia Tech; 2001. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/10919/28640.
Council of Science Editors:
Camphouse RC. Modeling and Numerical Approximations of Optical Activity in the Chemical Oxygen-Iodine Laser. [Doctoral Dissertation]. Virginia Tech; 2001. Available from: http://hdl.handle.net/10919/28640

Univerzitet u Beogradu
8.
Čeki, Atila, 1980-.
Usavršavanje modela tesno dvojnih sistema saglasno sa
rezultatima posmatranja visoke preciznosti.
Degree: Matematički fakultet, 2016, Univerzitet u Beogradu
URL: https://fedorabg.bg.ac.rs/fedora/get/o:12347/bdef:Content/get
► Astronomijа-Astrofizika/Astronomy-Astrophysics
U disertaciji je predstavljen program za modeliranje dvojnih sistema, Infinity, koji kombinuje tradicionalne principe modeliranja (Roche-ova geometrija, von Zeipel-ov zakon raspodele temperature, itd), sa…
(more)
▼ Astronomijа-Astrofizika/Astronomy-Astrophysics
U disertaciji je predstavljen program za
modeliranje dvojnih sistema, Infinity, koji kombinuje tradicionalne
principe modeliranja (Roche-ova geometrija, von Zeipel-ov zakon
raspodele temperature, itd), sa novim metodama za geometrijsku
reprezentaciju sistema. Proučavanje tesno dvojnih zvezda ima dugu
tradiciju u Srbiji, pre svega zahvaljujući radu dr Gojka
Đuraševića. Program predstavljen u ovoj disertaciji je baziran na
njegovom programu za modeliranje aktivnih tesno dvojnih sistema sa
akrecionim diskom (Đurašević, 1991) i donosi nekoliko značajnih
poboljšanja, koja se mogu svrstati u dve grupe: U prvoj grupi su
poboljšanja koja se odnose na generalizaciju modela. Pre svega,
novi program je moguće primeniti i na sisteme sa ekscentričnim
orbitama. Moguće je računanje i rešavanje inverznog problema za
krive radijalnih brzina. Razvijen je nov algoritam za određivanje
vidljivih delova komponenata tokom pomračenja koji omogućava
preciznije modeliranje krivih sjaja adaptivnom podelom u regionu
pomračenja. Takođe omogućava generalizaciju geometrijskog modela
akrecionog diska, koji može biti koničnog ili toroidalnog oblika.
Druga grupa unapređenja se odnosi na modeliranje fizičkih procesa
na komponentama. Najznačajnija promena se odnosi na računanje
izlaznog fluksa zračenja. Naime, u Đuraševićevom programu se
pretpostavlja da elementarne ćelije zrače kao apsolutno crno telo,
dok se u ovom programu svakoj ćeliji pripisuje jednodimenzionalni
Kurucz-ov model zvezdane atmosfere koji je izveden pod
pretpostavkom lokalne termodinamičke ravnoteže. Poboljšan je i
tretman uticaja fotometrijskih filtera na izračunatu krivu sjaja.
Takođe je proširena lista podržanih filtera. Dvojni sistem se
opisuje Roche-ovim modelom. On pretpostavlja da su kretanje i oblik
komponenata određeni superpozicijom gravitacione i centrifugalne
sile, dok se sve ostale interakcije zanemaruju. Zvezde se tretiraju
kao materijalne tačke (tzv. aproksimacija centralne kondenzacije),
pa se njihova unutrašnja struktura ne uzima u
obzir...
Advisors/Committee Members: Atanacković, Olga, 1959-.
Subjects/Keywords: binaries: eclipsing - accretion disks - methods:
numerical - techniques: photometric - techniques: radial velocities
- stars: individual: EG Cep - stars: individual: AU
Mon
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Čeki, Atila, 1. (2016). Usavršavanje modela tesno dvojnih sistema saglasno sa
rezultatima posmatranja visoke preciznosti. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:12347/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Čeki, Atila, 1980-. “Usavršavanje modela tesno dvojnih sistema saglasno sa
rezultatima posmatranja visoke preciznosti.” 2016. Thesis, Univerzitet u Beogradu. Accessed April 17, 2021.
https://fedorabg.bg.ac.rs/fedora/get/o:12347/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Čeki, Atila, 1980-. “Usavršavanje modela tesno dvojnih sistema saglasno sa
rezultatima posmatranja visoke preciznosti.” 2016. Web. 17 Apr 2021.
Vancouver:
Čeki, Atila 1. Usavršavanje modela tesno dvojnih sistema saglasno sa
rezultatima posmatranja visoke preciznosti. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Apr 17].
Available from: https://fedorabg.bg.ac.rs/fedora/get/o:12347/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Čeki, Atila 1. Usavršavanje modela tesno dvojnih sistema saglasno sa
rezultatima posmatranja visoke preciznosti. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:12347/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Curtin University of Technology
9.
Collinson, Roger.
Mathematical models and numerical techniques for plasticity flows of granular media.
Degree: 1998, Curtin University of Technology
URL: http://hdl.handle.net/20.500.11937/1930
► A mathematical study has been undertaken to model various kinds of granular flows including the perfect plasticity flow and the viscous elasto-plasticity flow. The work…
(more)
▼ A mathematical study has been undertaken to model various kinds of granular flows including the perfect plasticity flow and the viscous elasto-plasticity flow. The work is mainly based on the double-shearing theory originated by Spencer and developed by many others. The focus of the project is on the formulation of the theory, the construction of mathematical models and the development of robust simulation techniques.Based on a general formulation of the double-shearing theory, the perfect plasticity flow is shown to be governed by a set of highly nonlinear first order hyperbolic partial differential equations with two distinct characteristics. A sophisticated numerical algorithm is then developed based on the method of characteristics to determine the stress discontinuity and the velocity and stress fields. With the method developed, a numerical study is then undertaken to model the flow of granular materials in a hopper in the presence of stress discontinuity and to investigate the influence of various parameters on the distribution of hopper wall pressures.Utilising the double shearing theory, a set of stress-strain constitutive equations in explicit form has been derived, which makes it possible to formulate the double-shearing theory within the framework of the finite element method. Thus, consequently, a sophisticated finite element technique has been developed to solve the general boundary value problem governing the viscous elasto-plasticity flows obeying the double-shearing theory. Numerical implementation of the frictional boundary condition is also presented. The model is then illustrated with a numerical example demonstrating the influence of wall friction on the distribution of pressures on silo walls throughout the dynamic process of material discharge from silos.
Subjects/Keywords: mathematical models;
numerical techniques;
granular flows
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Collinson, R. (1998). Mathematical models and numerical techniques for plasticity flows of granular media.
(Thesis). Curtin University of Technology. Retrieved from http://hdl.handle.net/20.500.11937/1930
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Collinson, Roger. “Mathematical models and numerical techniques for plasticity flows of granular media.
” 1998. Thesis, Curtin University of Technology. Accessed April 17, 2021.
http://hdl.handle.net/20.500.11937/1930.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Collinson, Roger. “Mathematical models and numerical techniques for plasticity flows of granular media.
” 1998. Web. 17 Apr 2021.
Vancouver:
Collinson R. Mathematical models and numerical techniques for plasticity flows of granular media.
[Internet] [Thesis]. Curtin University of Technology; 1998. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/20.500.11937/1930.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Collinson R. Mathematical models and numerical techniques for plasticity flows of granular media.
[Thesis]. Curtin University of Technology; 1998. Available from: http://hdl.handle.net/20.500.11937/1930
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cincinnati
10.
Kalagotla, Dilip.
Modeling Particle Drag in Accelerating Flows with
Implications for SBLI in PIV - A Numerical Analysis.
Degree: MS, Engineering and Applied Science: Aerospace
Engineering, 2018, University of Cincinnati
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523630352322552
► Since its inception, Particle Image Velocimetry (PIV) has been increasingly used to measure the velocity of the flow field, especially in aerospace applications. One of…
(more)
▼ Since its inception, Particle Image Velocimetry (PIV)
has been increasingly used to measure the velocity of the flow
field, especially in aerospace applications. One of the major
assumptions of PIV is that velocity of the flow field is same as
the velocity of tracers in it. The ability of PIV to measure
velocity depends upon the potential of tracers to track the flow
surrounding them.Shock-Boundary Layer Interactions (SBLIs) have
been studied extensively over the years using experimental and
computational methods due to their importance in almost every
supersonic flow. PIV has been doing a great job in analyzing SBLIs
over the past few years but it has its limitations especially when
there are high temporal and spatial accelerations. On the other
hand,
numerical simulations that better predict shock interactions
have a hard time analyzing the turbulence properties of SBLIs. This
implies that only by using both computational and experimental
results together physics of SBLIs can be better understood.The
current study was divided into two parts. First, development and
validation of a post-processing code to be able to accommodate the
solid particles. For this, Visual3 has been chosen because it lets
a user control even smallest of its processes. Visual3 code has
been modified to track particles using accurate physics within a
flow. Forces acting on a particle in a flow were analyzed and
compared using data obtained from Modified-Visual3 (MV3). Based on
this data, dominant forces on a particle in high-speed flow are
determined. Results obtained from Modified-Visual3 are compared
with Melling(1997) data to validate the code. A specific case is
solved mathematically to compare with Modified-Visual3 and
Melling's data. A second validation was done using an example of a
generalized oblique shock to understand the behavior of the
particle passing through the shock. Finally, particle relaxation
times for different particle specifications were calculated to
understand which particles have better traceability to use in
Particle Image Velocimetry(PIV).Second, the MV3 code was used to
post-process the CFD results of the UM-PIV data. These CFD results
were obtained from the
numerical analyses conducted at the UC. A
standard case with 2.75 Mach and 7.75° wedge angle were used in MV3
to be in compliance with the CFD analysis. Particle, fluid
velocities, position at every instant were collected from MV3 and
were later used for comparison. This obtained data was filtered
using a Python script to compare with the experimental plane
defined in Eagle's (2011) work. Different particle sizes were used
to compare the obtained results. These results were then used to
analyze particle lag, velocity differences, velocity and
acceleration contours. Finally, an error analysis was done to
compare PIV, CFD and particle data.Results obtained from
particulate data showed remarkable improvement in agreement with
experimental data. Streamwise velocity, which was previously a
major drawback, has shown a considerable improvement. This implies
that…
Advisors/Committee Members: Orkwis, Paul (Committee Chair).
Subjects/Keywords: Aerospace Materials; Numerical modeling; Multiphase analysis; PIV; SBLI; Validation techniques; Particle drag modeling
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kalagotla, D. (2018). Modeling Particle Drag in Accelerating Flows with
Implications for SBLI in PIV - A Numerical Analysis. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523630352322552
Chicago Manual of Style (16th Edition):
Kalagotla, Dilip. “Modeling Particle Drag in Accelerating Flows with
Implications for SBLI in PIV - A Numerical Analysis.” 2018. Masters Thesis, University of Cincinnati. Accessed April 17, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523630352322552.
MLA Handbook (7th Edition):
Kalagotla, Dilip. “Modeling Particle Drag in Accelerating Flows with
Implications for SBLI in PIV - A Numerical Analysis.” 2018. Web. 17 Apr 2021.
Vancouver:
Kalagotla D. Modeling Particle Drag in Accelerating Flows with
Implications for SBLI in PIV - A Numerical Analysis. [Internet] [Masters thesis]. University of Cincinnati; 2018. [cited 2021 Apr 17].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523630352322552.
Council of Science Editors:
Kalagotla D. Modeling Particle Drag in Accelerating Flows with
Implications for SBLI in PIV - A Numerical Analysis. [Masters Thesis]. University of Cincinnati; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1523630352322552

Ohio University
11.
Marmie, John A.
Modern numerical electromagnetic techniques applied to
aviation problems.
Degree: MS, Electrical Engineering & Computer Science
(Engineering and Technology), 1989, Ohio University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1182443521
Modern numerical electromagnetic techniques
applied to aviation problems
Advisors/Committee Members: Radcliff, Roger (Advisor).
Subjects/Keywords: Modern Numerical Electromagnetic Techniques Aviation
Problems
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Marmie, J. A. (1989). Modern numerical electromagnetic techniques applied to
aviation problems. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1182443521
Chicago Manual of Style (16th Edition):
Marmie, John A. “Modern numerical electromagnetic techniques applied to
aviation problems.” 1989. Masters Thesis, Ohio University. Accessed April 17, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1182443521.
MLA Handbook (7th Edition):
Marmie, John A. “Modern numerical electromagnetic techniques applied to
aviation problems.” 1989. Web. 17 Apr 2021.
Vancouver:
Marmie JA. Modern numerical electromagnetic techniques applied to
aviation problems. [Internet] [Masters thesis]. Ohio University; 1989. [cited 2021 Apr 17].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1182443521.
Council of Science Editors:
Marmie JA. Modern numerical electromagnetic techniques applied to
aviation problems. [Masters Thesis]. Ohio University; 1989. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1182443521

Colorado State University
12.
Šekeljić, Nada J.
Transient analysis of closed- and open-region electromagnetic problems using higher order finite element method and method of moments in the time domain.
Degree: PhD, Electrical and Computer Engineering, 2015, Colorado State University
URL: http://hdl.handle.net/10217/166992
► The principal objective of this dissertation is to develop computational electromagnetic (CEM) methodology and tools for modeling of closed (waveguide and cavity based) and open…
(more)
▼ The principal objective of this dissertation is to develop computational electromagnetic (CEM) methodology and tools for modeling of closed (waveguide and cavity based) and open (radiation and scattering) electromagnetic structures in the time domain (TD), employing two CEM approaches. The first method is a novel higher order and large-domain Galerkin finite element method (FEM) for transient analysis of multiport microwave waveguide devices with arbitrary metallic and dielectric discontinuities. It is based on geometrical modeling using Lagrange interpolation generalized hexahedral elements, spatial field expansion in terms of hierarchical curl-conforming polynomial vector basis functions, time-stepping with an implicit unconditionally stable finite difference scheme using the Newmark-beta method, and mesh truncation introducing the waveguide port boundary condition. The second method is a novel spatially large-domain and temporally entire-domain method of moments (MoM) proposed for surface integral equation (SIE) modeling of 3-D conducting scatterers in the TD. The method uses higher order curved Lagrange interpolation generalized quadrilateral geometrical elements, higher order spatial current expansions based on hierarchical divergence-conforming polynomial vector basis functions, and temporal current modeling by means of orthogonal weighted associated Laguerre basis functions. It implements full temporal and spatial Galerkin testing and marching-on-in-degree (MOD) scheme for an iterative solution of the final system of spatially and temporally discretized MoM-TD equations.
Numerical examples of waveguides and scatterers, modeled using flat and curved large elements in conjunction with field/current expansions of orders from 2 to 9, demonstrate excellent accuracy, efficiency, convergence, and versatility of the proposed methodologies. The results obtained by higher order TD-FEM and TD-MoM are in an excellent agreement with indirect solutions obtained from FEM and MoM analyses in the frequency domain (FD) in conjunction with discrete Fourier transform and its inverse, as well as with measurements and alternative full-wave
numerical solutions in both TD and FD.
Advisors/Committee Members: Notaroš, Branislav M. (advisor), Mueller, Jennifer (committee member), Reising, Steven C. (committee member), Chandrasekar, V. (committee member), Ilić, Milan M. (committee member).
Subjects/Keywords: finite element method; numerical techniques; transient response; method of moments; electromagnetic analysis; scattering
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Šekeljić, N. J. (2015). Transient analysis of closed- and open-region electromagnetic problems using higher order finite element method and method of moments in the time domain. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/166992
Chicago Manual of Style (16th Edition):
Šekeljić, Nada J. “Transient analysis of closed- and open-region electromagnetic problems using higher order finite element method and method of moments in the time domain.” 2015. Doctoral Dissertation, Colorado State University. Accessed April 17, 2021.
http://hdl.handle.net/10217/166992.
MLA Handbook (7th Edition):
Šekeljić, Nada J. “Transient analysis of closed- and open-region electromagnetic problems using higher order finite element method and method of moments in the time domain.” 2015. Web. 17 Apr 2021.
Vancouver:
Šekeljić NJ. Transient analysis of closed- and open-region electromagnetic problems using higher order finite element method and method of moments in the time domain. [Internet] [Doctoral dissertation]. Colorado State University; 2015. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/10217/166992.
Council of Science Editors:
Šekeljić NJ. Transient analysis of closed- and open-region electromagnetic problems using higher order finite element method and method of moments in the time domain. [Doctoral Dissertation]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/166992
13.
Hadjara, Macinissa.
Observations et modélisations spectro-interférométriques longue base des étoiles et de leur environnement proche : Long baseline spectro-interferometric observing and modeling of stars and their close environment.
Degree: Docteur es, Astrophysique, 2015, Nice
URL: http://www.theses.fr/2015NICE4008
► Cette thèse présente les résultats d'observations d'étoiles en rotation rapide menées sur le spectro-interféromètre AMBER du VLTI dans ses modes haute et moyenne résolutions spectrales.…
(more)
▼ Cette thèse présente les résultats d'observations d'étoiles en rotation rapide menées sur le spectro-interféromètre AMBER du VLTI dans ses modes haute et moyenne résolutions spectrales. Les mesures effectuées sont les visibilités estimées sur trois bases simultanées, les phases différentielles en fonction de la longueur d'onde et des phases de clôtures avec, pour certaines nuits une bonne couverture du plan (u,v). Les données utilisées sont issues de plusieurs campagnes d'observation. Ces dernières étaient fortement dégradées par les défauts optiques d'AMBER, et affectés par des bruits classiques d'interférométrie optique à longue base en IR: défauts du détecteur, bruit de lecture, instabilités du suiveur de franges, ...etc. Leur analyse a nécessité la mise au point d'outils numériques de réduction spécifiques pour atteindre les précisions nécessaires à l'interprétation de mesures interférométriques. Pour interpréter ces mesures j'ai développé un modèle semi-analytique chromatique d'étoile en rotation rapide qui m'a permis d'estimer, à partir des phases différentielles; le degré d'aplatissement, le rayon équatorial, la vitesse de rotation, l'angle d'inclinaison, l'angle position de l'axe de rotation de l'étoile sur le ciel, la distribution de la température effective locale et de la gravité à la surface de l'étoile dans le cadre du théorème de von Zeipel. Les résultats concernant 4 étoiles massives de types spectraux B, A et F m'ont permis de les caractériser pour les mécanismes évoqués ci-dessus et d'ouvrir ainsi la perspective d'études plus systématiques d'objets similaires en étendant ultérieurement ces études à la relation photosphère-enveloppe circumstellaire.
This thesis presents the results of rapidly rotating stars observations conducted on the AMBER spectro-interferometer VLTI in its high average spectral modes and resolutions. The measurements are estimated on three simultaneous visibility bases, differential phases depending on the wavelength and closure phases, with good coverage of the (u, v) plane for some nights. The data used are from several observation campaigns. These were highly degraded by the optical defects of AMBER, and assigned by standard optical interferometry long base IR noises: defects of the detector, reading noise, fringes follower instabilities, ... etc. Their analysis required the development of digital reduction of specific tools to achieve the necessary details to the interpretation of interferometric measurements. In interpreting these measures I developed a chromatic semi-analytical model of rapidly rotating star that allowed me to estimate, from the differential phases; the degree of flattening, the equatorial radius, speed of rotation, angle of inclination, the position angle of the star rotation axis in the sky, the local distribution of the actual temperature and the gravity to the surface of the star within the von Zeipel theorem. The results for four massive stars of spectral type B, A and F have allowed me to characterize the mechanisms discussed above and thus open…
Advisors/Committee Members: Vakili, Farrokh (thesis director), Domiciano de Souza, Armando (thesis director).
Subjects/Keywords: Étoiles : rotation rapide; Méthodes observationnelles; Techniques numériques : interférométrique; Haute résolution angulaire; Stars : fast rotation; Methods observational; Numerical Techniques : interferometric; High angular resolution
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hadjara, M. (2015). Observations et modélisations spectro-interférométriques longue base des étoiles et de leur environnement proche : Long baseline spectro-interferometric observing and modeling of stars and their close environment. (Doctoral Dissertation). Nice. Retrieved from http://www.theses.fr/2015NICE4008
Chicago Manual of Style (16th Edition):
Hadjara, Macinissa. “Observations et modélisations spectro-interférométriques longue base des étoiles et de leur environnement proche : Long baseline spectro-interferometric observing and modeling of stars and their close environment.” 2015. Doctoral Dissertation, Nice. Accessed April 17, 2021.
http://www.theses.fr/2015NICE4008.
MLA Handbook (7th Edition):
Hadjara, Macinissa. “Observations et modélisations spectro-interférométriques longue base des étoiles et de leur environnement proche : Long baseline spectro-interferometric observing and modeling of stars and their close environment.” 2015. Web. 17 Apr 2021.
Vancouver:
Hadjara M. Observations et modélisations spectro-interférométriques longue base des étoiles et de leur environnement proche : Long baseline spectro-interferometric observing and modeling of stars and their close environment. [Internet] [Doctoral dissertation]. Nice; 2015. [cited 2021 Apr 17].
Available from: http://www.theses.fr/2015NICE4008.
Council of Science Editors:
Hadjara M. Observations et modélisations spectro-interférométriques longue base des étoiles et de leur environnement proche : Long baseline spectro-interferometric observing and modeling of stars and their close environment. [Doctoral Dissertation]. Nice; 2015. Available from: http://www.theses.fr/2015NICE4008
14.
Ouerdani, Aziz.
Modélisation de données pharmacologiques précliniques et cliniques d'efficacité des médicaments anti-angiogéniques en cancérologie : Modeling of preclinical and clinical pharmacological data for the efficacy of antiangiogenic compounds in oncology.
Degree: Docteur es, Mathématiques Appliquées, 2016, Université Grenoble Alpes (ComUE)
URL: http://www.theses.fr/2016GREAM018
► En l’espace d’une quarantaine d’année, les connaissances sur l’angiogenèse tumorale ont littéralement explosé. Dans les années 1970, Judah Folkman démontre que les tumeurs ont besoin…
(more)
▼ En l’espace d’une quarantaine d’année, les connaissances sur l’angiogenèse tumorale ont littéralement explosé. Dans les années 1970, Judah Folkman démontre que les tumeurs ont besoin d’être vascularisées pour continuer à proliférer. Peu de temps après, les protagonistes principaux de l’angiogenèse tumorale ont été découverts, de même que les mécanismes dans lesquels ils sont impliqués. La décennie suivante marque le début des recherches sur les molécules à visée anti-angiogénique et c’est en 2004 que le bevacizumab (Avastin, Roche), premier médicament anti-angiogénique utilisé en oncologie, voit le jour. Parallèlement à cela, l’essor de la modélisation à effets-mixtes couplée aux progrès des outils informatiques ont permis de développer des méthodes d’analyses de données de plus en plus performantes. Dès 2009 L’agence de régulation FDA (Food and Drug Administration) aux Etats-Unis a identifié le rôle central de la modélisation numérique pour mieux analyser les données d’efficacité et de toxicité, préclinique et clinique en cancérologie. Le but de ce projet est d’étudier les effets de différents inhibiteurs de l’angiogenèse sur la dynamique tumorale, en se basant sur une approche populationnelle. Les modèles développés seront des modèles à base d’équations différentielles ordinaires intègrant des données et des informations issues de la littérature. L’objectif de ces modèles est de caractériser la dynamique des tailles tumorales chez les animaux et chez les patients, afin de comprendre les effets des traitements anti-angiogéniques et apporter un soutien pour le développement de ces molécules ou pour la prise de décisions thérapeutiques par les cliniciens.
Within the last 40 years, knowledge of tumor angiogenesis has literally exploded. In the seventies, Judah Folkman demonstrated that tumors need to be vascularized to continue to proliferate. Shortly after, the main protagonists of tumor angiogenesis have been discovered, as well as the mechanisms in which they are involved. The next decade is the beginning of the research on molecules with anti-angiogenic effects and in 2004 bevacizumab (Avastin, Roche), the first antiangiogenic drug used in oncology, was available for treating solid cancer patients. Along with this, the increasing interest of mixed-effects modeling coupled with advances in computer tools allowed developing more efficient methods of data analysis. In 2009, the regulatory agency FDA (Food and Drug Administration) in the United States has identified the central role of numerical modeling to better analyze the efficacy and toxicity preclinical and clinical oncology data. The aim of this project is to study the effects of different angiogenesis inhibitors on tumor dynamics, based on a population approach. The developed models are models based on ordinary differential equations and that integrate data and information from the literature. The objective of these models is to characterize the dynamics of tumor sizes in animals and patients in order to understand the effects of anti-angiogenic treatments…
Advisors/Committee Members: Ribba, Benjamin (thesis director).
Subjects/Keywords: Modélisation numérique; Oncologie; Modèle à effet mixte; Estimation paramétrique; Approche Bayésienne; Développement du médicament; Numerical modeling; Oncology; Mixte effect models; Parameter estimation techniques; Bayesian techniques; Drug development; 519
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ouerdani, A. (2016). Modélisation de données pharmacologiques précliniques et cliniques d'efficacité des médicaments anti-angiogéniques en cancérologie : Modeling of preclinical and clinical pharmacological data for the efficacy of antiangiogenic compounds in oncology. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2016GREAM018
Chicago Manual of Style (16th Edition):
Ouerdani, Aziz. “Modélisation de données pharmacologiques précliniques et cliniques d'efficacité des médicaments anti-angiogéniques en cancérologie : Modeling of preclinical and clinical pharmacological data for the efficacy of antiangiogenic compounds in oncology.” 2016. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed April 17, 2021.
http://www.theses.fr/2016GREAM018.
MLA Handbook (7th Edition):
Ouerdani, Aziz. “Modélisation de données pharmacologiques précliniques et cliniques d'efficacité des médicaments anti-angiogéniques en cancérologie : Modeling of preclinical and clinical pharmacological data for the efficacy of antiangiogenic compounds in oncology.” 2016. Web. 17 Apr 2021.
Vancouver:
Ouerdani A. Modélisation de données pharmacologiques précliniques et cliniques d'efficacité des médicaments anti-angiogéniques en cancérologie : Modeling of preclinical and clinical pharmacological data for the efficacy of antiangiogenic compounds in oncology. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2016. [cited 2021 Apr 17].
Available from: http://www.theses.fr/2016GREAM018.
Council of Science Editors:
Ouerdani A. Modélisation de données pharmacologiques précliniques et cliniques d'efficacité des médicaments anti-angiogéniques en cancérologie : Modeling of preclinical and clinical pharmacological data for the efficacy of antiangiogenic compounds in oncology. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2016. Available from: http://www.theses.fr/2016GREAM018

McMaster University
15.
Tervo, Richard.
Automated Analysis of Gamma Ray Spectra.
Degree: MSc, 1982, McMaster University
URL: http://hdl.handle.net/11375/20365
► Contemporary approaches to data analysis suffer from being both time-consuming and subjective; however, the application of numerical techniques to the automated (non-interactive) analysis of…
(more)
▼ Contemporary approaches to data
analysis suffer from being both time-consuming and
subjective; however, the application of numerical techniques
to the automated (non-interactive) analysis of gamma ray
spectra often leads to considerably improved performance.
The foundations and limitations of such techniques lie in
the applicability of certain mathematical operations such as
deconvolution, and the careful study of stochastic models.
The use of digital filters as a method of enhancing detector
response has been applied to a triple-coincidence counting
arrangement, after modelling undesired physical effects. An
objective background estimation method has been described
based on the statistical nature of nuclear measurements. Finally,
the application of such techniques is demonstrated
with a package of FORTRAN programs designed to be used in a
variety of situations with minimal modifications.
Thesis
Master of Science (MSc)
Advisors/Committee Members: Kennett, T. J., Physics.
Subjects/Keywords: Automated Analysis; Gamma Ray; Ray Spectra; numerical techniques
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tervo, R. (1982). Automated Analysis of Gamma Ray Spectra. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/20365
Chicago Manual of Style (16th Edition):
Tervo, Richard. “Automated Analysis of Gamma Ray Spectra.” 1982. Masters Thesis, McMaster University. Accessed April 17, 2021.
http://hdl.handle.net/11375/20365.
MLA Handbook (7th Edition):
Tervo, Richard. “Automated Analysis of Gamma Ray Spectra.” 1982. Web. 17 Apr 2021.
Vancouver:
Tervo R. Automated Analysis of Gamma Ray Spectra. [Internet] [Masters thesis]. McMaster University; 1982. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/11375/20365.
Council of Science Editors:
Tervo R. Automated Analysis of Gamma Ray Spectra. [Masters Thesis]. McMaster University; 1982. Available from: http://hdl.handle.net/11375/20365

University of Ottawa
16.
Baggu, Gnanesh.
Efficient Approach for Order Selection of Projection-Based Model Order Reduction
.
Degree: 2018, University of Ottawa
URL: http://hdl.handle.net/10393/37967
► The present thrust in the electronics industry towards integrating multiple functions on a single chip while operating at very high frequencies has highlighted the need…
(more)
▼ The present thrust in the electronics industry towards integrating multiple functions on a single chip while operating at very high frequencies has highlighted the need for efficient Electronic Design Automation (EDA) tools to shorten the design cycle and capture market windows. However, the increasing complexity in modern circuit design has made simulation a computationally cumbersome task. The notion of model order reduction has emerged as an effective tool to address this difficulty. Typically, there are numerous approaches and several issues involved in the implementation of model-order reduction techniques. Among the important ones of those issues is the problem of determining a suitable order (or size) for the reduced system. An optimal order would be the minimal order that enables the reduced system to capture the
behavior of the original (more complex and larger) system up to a user-defined frequency. The contribution presented in this thesis describes a new approach aimed at determining the order of the reduced system. The proposed approach is based on approximating the impulse response of the original system in the time-domain. The core methodology in obtaining that approximation is based on numerically inverting the Laplace-domain of the representation of the impulse response from the complex-domain (s-domain) into the time-domain. The main advantage of the proposed approach is that it allows the order selection algorithm to operate directly on the time-domain form of the impulse response. It is well-known that numerically generating the impulse response in the time-domain is very difficult and its not impossible, since it requires driving the original network with the Dirac-delta function, which is a mathematical abstraction rather than a concrete waveform that can be implemented on a digital computer. However, such a difficulty is avoided in the proposed approach since it uses the Laplace-domain image of the impulse response to obtain its time-domain representation. The numerical simulations presented in the thesis demonstrate that using the time-domain waveform of the impulse response, computed using the proposed approach and properly filtered with a Butterworth filter, guides the order selection algorithm to select a smaller order, i.e., the reduced system becomes more compact in size. The phrase "smaller or more compact" in this context refers to the comparison with existing techniques currently in use, which seek to generate some form of time-domain approximations for the impulse response through driving the original network with pulse-shaped function (e.g., Gaussian pulse).
Subjects/Keywords: Model Order Reduction;
Projection-based techniques;
Order Selection;
False Nearest Neighbors;
Numerical Inversion of Lapalce Transform;
Impulse response;
Butterworth filter
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Baggu, G. (2018). Efficient Approach for Order Selection of Projection-Based Model Order Reduction
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/37967
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Baggu, Gnanesh. “Efficient Approach for Order Selection of Projection-Based Model Order Reduction
.” 2018. Thesis, University of Ottawa. Accessed April 17, 2021.
http://hdl.handle.net/10393/37967.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Baggu, Gnanesh. “Efficient Approach for Order Selection of Projection-Based Model Order Reduction
.” 2018. Web. 17 Apr 2021.
Vancouver:
Baggu G. Efficient Approach for Order Selection of Projection-Based Model Order Reduction
. [Internet] [Thesis]. University of Ottawa; 2018. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/10393/37967.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Baggu G. Efficient Approach for Order Selection of Projection-Based Model Order Reduction
. [Thesis]. University of Ottawa; 2018. Available from: http://hdl.handle.net/10393/37967
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Florida Atlantic University
17.
Finamore, Timothy.
Shamir's secret sharing scheme using floating point arithmetic.
Degree: MS, 2012, Florida Atlantic University
URL: http://purl.flvc.org/FAU/3342048
► Summary: Implementing Shamir's secret sharing scheme using floating point arithmetic would provide a faster and more efficient secret sharing scheme due to the speed in…
(more)
▼ Summary: Implementing Shamir's secret sharing scheme using floating point arithmetic would provide a faster and more efficient secret sharing scheme due to the speed in which GPUs perform floating point arithmetic. However, with the loss of a finite field, properties of a perfect secret sharing scheme are not immediately attainable. The goal is to analyze the plausibility of Shamir's secret sharing scheme using floating point arithmetic achieving the properties of a perfect secret sharing scheme and propose improvements to attain these properties. Experiments indicate that property 2 of a perfect secret sharing scheme, "Any k-1 or fewer participants obtain no information regarding the shared secret", is compromised when Shamir's secret sharing scheme is implemented with floating point arithmetic. These experimental results also provide information regarding possible solutions and adjustments. One of which being, selecting randomly generated points from a smaller interval in one of the proposed schemes of this thesis. Further experimental results indicate improvement using the scheme outlined. Possible attacks are run to test the desirable properties of the different schemes and reinforce the improvements observed in prior experiments.
Electronic reproduction. Boca Raton, Fla., 2012.
Subjects/Keywords: Signal processing – Digital techniques – Mathematics; Data encryption (Computer science); Computer file sharing – Security measures; Computer algorithms; Numerical analysis – Data processing
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Finamore, T. (2012). Shamir's secret sharing scheme using floating point arithmetic. (Masters Thesis). Florida Atlantic University. Retrieved from http://purl.flvc.org/FAU/3342048
Chicago Manual of Style (16th Edition):
Finamore, Timothy. “Shamir's secret sharing scheme using floating point arithmetic.” 2012. Masters Thesis, Florida Atlantic University. Accessed April 17, 2021.
http://purl.flvc.org/FAU/3342048.
MLA Handbook (7th Edition):
Finamore, Timothy. “Shamir's secret sharing scheme using floating point arithmetic.” 2012. Web. 17 Apr 2021.
Vancouver:
Finamore T. Shamir's secret sharing scheme using floating point arithmetic. [Internet] [Masters thesis]. Florida Atlantic University; 2012. [cited 2021 Apr 17].
Available from: http://purl.flvc.org/FAU/3342048.
Council of Science Editors:
Finamore T. Shamir's secret sharing scheme using floating point arithmetic. [Masters Thesis]. Florida Atlantic University; 2012. Available from: http://purl.flvc.org/FAU/3342048

University of Technology, Sydney
18.
Matthews, Linda Marjorie.
Upgrading the paradigm : visual regimes, digital systems and the architectural surface.
Degree: 2015, University of Technology, Sydney
URL: http://hdl.handle.net/10453/43377
► The thesis argues that the contemporary representation of the city is a variable digital matrix propagated by ubiquitous camera technologies in association with Internet Protocol…
(more)
▼ The thesis argues that the contemporary representation of the city is a variable digital matrix propagated by ubiquitous camera technologies in association with Internet Protocol (IP) networks. In a radical departure from traditional linear perspective representation, the principal organisational unit of the digital image, the pixel, draws upon the operation of three principal perceptual properties of the human visual system (HVS): colour, brightness and shape, to assemble the image. As a consequence, the thesis proposes that the replacement of the image’s traditional linear coordinates by a numerical pixel grid instigates a perception and experience of urban space that offers a new series of concepts and tools to the architectural discipline.
The first part of the thesis situates the digital image in the historical and theoretical context of traditional analogue imaging processes: linear perspective representation, photography and film. This not only demonstrates the long-standing link between image-making techniques and architectural innovation, but it establishes an investigative platform and a procedural mode that isolates the unique properties and generative potential of the digital.
The second part of the thesis comprises two areas of investigation. The first of these documents a series of new approaches to architectural documentation based upon the webcam’s delineation of urban space and time. This is achieved using a combination of proprietary and non-proprietary scientific image-analysis software to extrapolate and reassemble image data in relation to the viewed architectural surface. The other area of investigation is undertaken by means of a series of practical tests that exploit the webcam’s technical capabilities. By referring to digital camera protocols associated with colour, brightness and shape, the tests seek to identify a range of new image-based design procedures that draw directly upon the structural geometry and data of the digital image and its numerical link with the city’s architectural surfaces.
As a practical demonstration of these procedures, the third and final section of the thesis is a video-based design investigation that intervenes in three different ways within the architectural surfaces of the city. Based upon an existing proprietary IP webcam in Times Square, New York, this proposal uses procedures that adapt webcam protocols in a way that directs the viewer’s attention to both the constructed nature of the webcam image and the presentation of the city as an iconic and utopian space.
The thesis therefore reveals how the pixel grid’s capacity to act as a generative tool marks a pronounced break from the type of influence previously had by earlier image-making techniques upon the perception and construction of urban form. It reveals how the departure from linear-dominant techniques of image-making in favour of associative groupings of qualitative content not only offers the architect new possibilities for the design and assembly of the material surfaces of architecture, but by…
Subjects/Keywords: Digital image.; Pixel.; Human visual system (HVS).; Numerical pixel grid.; Image-analysis software.; Architectural innovation.; Webcam protocols.; Linear-dominant techniques.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Matthews, L. M. (2015). Upgrading the paradigm : visual regimes, digital systems and the architectural surface. (Thesis). University of Technology, Sydney. Retrieved from http://hdl.handle.net/10453/43377
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Matthews, Linda Marjorie. “Upgrading the paradigm : visual regimes, digital systems and the architectural surface.” 2015. Thesis, University of Technology, Sydney. Accessed April 17, 2021.
http://hdl.handle.net/10453/43377.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Matthews, Linda Marjorie. “Upgrading the paradigm : visual regimes, digital systems and the architectural surface.” 2015. Web. 17 Apr 2021.
Vancouver:
Matthews LM. Upgrading the paradigm : visual regimes, digital systems and the architectural surface. [Internet] [Thesis]. University of Technology, Sydney; 2015. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/10453/43377.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Matthews LM. Upgrading the paradigm : visual regimes, digital systems and the architectural surface. [Thesis]. University of Technology, Sydney; 2015. Available from: http://hdl.handle.net/10453/43377
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat Politècnica de València
19.
Bader, Philipp Karl-Heinz.
Geometric Integrators for Schrödinger Equations
.
Degree: 2014, Universitat Politècnica de València
URL: http://hdl.handle.net/10251/38716
► The celebrated Schrödinger equation is the key to understanding the dynamics of quantum mechanical particles and comes in a variety of forms. Its numerical solution…
(more)
▼ The celebrated Schrödinger equation is the key to understanding the dynamics of
quantum mechanical particles and comes in a variety of forms. Its
numerical solution
poses numerous challenges, some of which are addressed in this work.
Arguably the most important problem in quantum mechanics is the so-called harmonic
oscillator due to its good approximation properties for trapping potentials. In
Chapter 2, an algebraic correspondence-technique is introduced and applied to construct
efficient splitting algorithms, based solely on fast Fourier transforms, which
solve quadratic potentials in any number of dimensions exactly - including the important
case of rotating particles and non-autonomous trappings after averaging by Magnus
expansions. The results are shown to transfer smoothly to the Gross-Pitaevskii
equation in Chapter 3. Additionally, the notion of modified nonlinear potentials is
introduced and it is shown how to efficiently compute them using Fourier transforms.
It is shown how to apply complex coefficient splittings to this nonlinear equation and
numerical results corroborate the findings.
In the semiclassical limit, the evolution operator becomes highly oscillatory and standard
splitting methods suffer from exponentially increasing complexity when raising
the order of the method. Algorithms with only quadratic order-dependence of the
computational cost are found using the Zassenhaus algorithm. In contrast to classical
splittings, special commutators are allowed to appear in the exponents. By construction,
they are rapidly decreasing in size with the semiclassical parameter and can be
exponentiated using only a few Lanczos iterations. For completeness, an alternative
technique based on Hagedorn wavepackets is revisited and interpreted in the light of
Magnus expansions and minor improvements are suggested. In the presence of explicit
time-dependencies in the semiclassical Hamiltonian, the Zassenhaus algorithm
requires a special initiation step. Distinguishing the case of smooth and fast frequencies,
it is shown how to adapt the mechanism to obtain an efficiently computable
decomposition of an effective Hamiltonian that has been obtained after Magnus expansion,
without having to resolve the oscillations by taking a prohibitively small
time-step.
Chapter 5 considers the Schrödinger eigenvalue problem which can be formulated as
an initial value problem after a Wick-rotating the Schrödinger equation to imaginary
time. The elliptic nature of the evolution operator restricts standard splittings to
low order, ¿ < 3, because of the unavoidable appearance of negative fractional timesteps
that correspond to the ill-posed integration backwards in time. The inclusion
of modified potentials lifts the order barrier up to ¿ < 5. Both restrictions can be
circumvented using complex fractional time-steps with positive real part and sixthorder
methods optimized for near-integrable Hamiltonians are presented.
Conclusions and pointers to further research are detailed in Chapter 6, with a special…
Advisors/Committee Members: Blanes Zamora, Sergio (advisor).
Subjects/Keywords: Numerical analysis;
Geometric integrators;
Splitting methods;
Magnus expansion;
Algebraic techniques;
Schrödinger equation;
Gross-Piatevskii equation;
Semiclassical limit;
Imaginary time
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bader, P. K. (2014). Geometric Integrators for Schrödinger Equations
. (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/38716
Chicago Manual of Style (16th Edition):
Bader, Philipp Karl-Heinz. “Geometric Integrators for Schrödinger Equations
.” 2014. Doctoral Dissertation, Universitat Politècnica de València. Accessed April 17, 2021.
http://hdl.handle.net/10251/38716.
MLA Handbook (7th Edition):
Bader, Philipp Karl-Heinz. “Geometric Integrators for Schrödinger Equations
.” 2014. Web. 17 Apr 2021.
Vancouver:
Bader PK. Geometric Integrators for Schrödinger Equations
. [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2014. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/10251/38716.
Council of Science Editors:
Bader PK. Geometric Integrators for Schrödinger Equations
. [Doctoral Dissertation]. Universitat Politècnica de València; 2014. Available from: http://hdl.handle.net/10251/38716

University of Toronto
20.
Barrera, Roberto Armenta.
The Principle of Coordinate Invariance and the Modelling of Curved Material Interfaces in Finite-difference Discretisations of Maxwell's Equations.
Degree: 2012, University of Toronto
URL: http://hdl.handle.net/1807/33908
► The principle of coordinate invariance states that all physical laws must be formulated in a mathematical form that is independent of the geometrical properties of…
(more)
▼ The principle of coordinate invariance states that all physical laws must be formulated in a mathematical form that is independent of the geometrical properties of any particular coordinate system. Embracing this principle is the key to understand how to systematically incorporate curved material interfaces into a numerical solution of Maxwell’s equations. This dissertation describes how to generate a coordinate invariant representation of Maxwell’s equations in differential form, and it demonstrates why employing such representation is crucial to the development of robust finite-difference discretisations with consistent global error properties. As part of this process, two original contributions are presented that address the issue of constructing finite-difference approximations at the locations of material interfaces. The first contribution is a domain-decomposition procedure to enforce the tangential field continuity conditions with a second-order local truncation error that can be applied in 2-D or 3-D. The second contribution is a similar domain-decomposition procedure that enforces the tangential field continuity conditions with a local truncation of order 2L—where L is an integer greater or equal to one—but that can only be applied in 1-D. To conclude, the dissertation also describes the interesting connection that exists between the use of a coordinate invariant representation of Maxwell’s equations to design artificial materials and the use of the same representation to model curved material interfaces in a finite-difference discretisation.
PhD
Advisors/Committee Members: Sarris, Costas D., Electrical and Computer Engineering.
Subjects/Keywords: numerical techniques; finite-difference methods; material boundaries; material interfaces; artificial materials; metamaterials; FDTD; high-order methods; 0544; 0607; 0405
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Barrera, R. A. (2012). The Principle of Coordinate Invariance and the Modelling of Curved Material Interfaces in Finite-difference Discretisations of Maxwell's Equations. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/33908
Chicago Manual of Style (16th Edition):
Barrera, Roberto Armenta. “The Principle of Coordinate Invariance and the Modelling of Curved Material Interfaces in Finite-difference Discretisations of Maxwell's Equations.” 2012. Doctoral Dissertation, University of Toronto. Accessed April 17, 2021.
http://hdl.handle.net/1807/33908.
MLA Handbook (7th Edition):
Barrera, Roberto Armenta. “The Principle of Coordinate Invariance and the Modelling of Curved Material Interfaces in Finite-difference Discretisations of Maxwell's Equations.” 2012. Web. 17 Apr 2021.
Vancouver:
Barrera RA. The Principle of Coordinate Invariance and the Modelling of Curved Material Interfaces in Finite-difference Discretisations of Maxwell's Equations. [Internet] [Doctoral dissertation]. University of Toronto; 2012. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/1807/33908.
Council of Science Editors:
Barrera RA. The Principle of Coordinate Invariance and the Modelling of Curved Material Interfaces in Finite-difference Discretisations of Maxwell's Equations. [Doctoral Dissertation]. University of Toronto; 2012. Available from: http://hdl.handle.net/1807/33908

Utah State University
21.
Drysdale, Frank R.
An Experimental Study of Variation within and between Populations of Petrophytum Caespitosum (Nutt.) Rydb. with Emphasis on Numerical Techniques.
Degree: MS, Plants, Soils, and Climate, 1968, Utah State University
URL: https://digitalcommons.usu.edu/etd/677
► Nine populations of sixty-eight individuals representing the distribution of Petrophytum caespitosum (Nutt.) Rydb. (Rosaceae) in the Intermountain Region were investigated for taxonomically significant variation…
(more)
▼ Nine populations of sixty-eight individuals representing the distribution of Petrophytum caespitosum (Nutt.) Rydb. (Rosaceae) in the Intermountain Region were investigated for taxonomically significant variation using
numerical techniques. On the basis of 19 morphological characters 3 subspecific taxa are recognized. Two taxa are existing subspecies: P. caespitosum (Nutt.) Rydb. var. caespitosum and P. caespitosum (Nutt.) Rydb. var. elatius (S. Wats.) Tides. One new subspecies is described: P. caespitosum (Nutt.) Rydb. var. latifolium. The ecology of the species is discussed. The floral and vegetative anatomy are described. Chromosome counts of 3 populations have given n = 9. A list of herbarium material is given. The
numerical analyses were run on an IBM S/360 computer using standardized data to find the coefficients of correlation between individuals of the same population and the coefficients of correlation between pairs of populations. The results of the
numerical analyses agree with more traditional methods.
Advisors/Committee Members: Arthur H. Holmgren, R. J. Shaw, I. G. Palmblad, ;.
Subjects/Keywords: variation; petrophytum caespitosum populations; numerical techniques; Botany
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Drysdale, F. R. (1968). An Experimental Study of Variation within and between Populations of Petrophytum Caespitosum (Nutt.) Rydb. with Emphasis on Numerical Techniques. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/677
Chicago Manual of Style (16th Edition):
Drysdale, Frank R. “An Experimental Study of Variation within and between Populations of Petrophytum Caespitosum (Nutt.) Rydb. with Emphasis on Numerical Techniques.” 1968. Masters Thesis, Utah State University. Accessed April 17, 2021.
https://digitalcommons.usu.edu/etd/677.
MLA Handbook (7th Edition):
Drysdale, Frank R. “An Experimental Study of Variation within and between Populations of Petrophytum Caespitosum (Nutt.) Rydb. with Emphasis on Numerical Techniques.” 1968. Web. 17 Apr 2021.
Vancouver:
Drysdale FR. An Experimental Study of Variation within and between Populations of Petrophytum Caespitosum (Nutt.) Rydb. with Emphasis on Numerical Techniques. [Internet] [Masters thesis]. Utah State University; 1968. [cited 2021 Apr 17].
Available from: https://digitalcommons.usu.edu/etd/677.
Council of Science Editors:
Drysdale FR. An Experimental Study of Variation within and between Populations of Petrophytum Caespitosum (Nutt.) Rydb. with Emphasis on Numerical Techniques. [Masters Thesis]. Utah State University; 1968. Available from: https://digitalcommons.usu.edu/etd/677
22.
HUANG XUEJUN.
MICROWAVE SCATTERING AND TRANSMISSION BY RADOMES.
Degree: 1996, National University of Singapore
URL: https://scholarbank.nus.edu.sg/handle/10635/182181
Subjects/Keywords: Radomes; Electromagnetic theory; Scattering and propagation; Numerical techniques
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
XUEJUN, H. (1996). MICROWAVE SCATTERING AND TRANSMISSION BY RADOMES. (Thesis). National University of Singapore. Retrieved from https://scholarbank.nus.edu.sg/handle/10635/182181
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
XUEJUN, HUANG. “MICROWAVE SCATTERING AND TRANSMISSION BY RADOMES.” 1996. Thesis, National University of Singapore. Accessed April 17, 2021.
https://scholarbank.nus.edu.sg/handle/10635/182181.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
XUEJUN, HUANG. “MICROWAVE SCATTERING AND TRANSMISSION BY RADOMES.” 1996. Web. 17 Apr 2021.
Vancouver:
XUEJUN H. MICROWAVE SCATTERING AND TRANSMISSION BY RADOMES. [Internet] [Thesis]. National University of Singapore; 1996. [cited 2021 Apr 17].
Available from: https://scholarbank.nus.edu.sg/handle/10635/182181.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
XUEJUN H. MICROWAVE SCATTERING AND TRANSMISSION BY RADOMES. [Thesis]. National University of Singapore; 1996. Available from: https://scholarbank.nus.edu.sg/handle/10635/182181
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Michigan
23.
Zahn, Daniel Jacob.
Investigation of bistatic scattering using numerical techniques and novel near -field measurements.
Degree: PhD, Electrical engineering, 2001, University of Michigan
URL: http://hdl.handle.net/2027.42/126867
► Currently there exists a desire to pursue novel measurement, numerical, and analytical techniques for characterization of bistatic response of point and distributed targets. This thesis…
(more)
▼ Currently there exists a desire to pursue novel measurement,
numerical, and analytical
techniques for characterization of bistatic response of point and distributed targets. This thesis strives to incorporate aspects from each of these electromagnetic (EM) strategies and to apply these
techniques to further the understanding of remote sensing of point and distributed targets through bistatic measurements and theoretical scattering models. A planar near-field scanning system is proposed, built, and tested that performs bistatic scattering measurements from both point and distributed targets with a high degree of accuracy. Also,
numerical techniques are pursued for advancing the knowledge of EM scattering from rough surfaces using computational electromagnetics by looking at the two major limiting factors of such analysis-time and memory requirements. Through the use of wavelet basis functions, it is found that the moment matrix of the Method of Moments can be made significantly sparse (up to 99% sparse) when a threshold is applied. Efficient sparse matrix solvers now can be used without sacrificing accuracy of the scattering pattern. Using an Iterative Physical Optics approach allows significant time reduction in analysis for 1-Dimensional and 2-Dimensional random rough Perfectly Electrically Conducting (PEC) or impedance boundary surfaces with physical characteristics that have a root mean square (rms) slope less than 0.5. Finally, the performance of a parasitic GPS multi-static radar system is investigated. A feasibility study is conducted with the desire of applying such a system to the remote sensing of the earth without launching high cost satellites, but rather using existing satellites already in orbit. The results of this feasibility study concluded that current GPS satellites do not transmit enough power to accurately measure incoherent bistatic scattering from the earth, but the next generation GPS satellites may be more applicable to this endeavor.
Advisors/Committee Members: Sarabandi, Kamal (advisor).
Subjects/Keywords: Bistatic Scattering; Electromagnetics; Investigation; Measurements; Near-field; Novel; Numerical; Techniques; Using
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zahn, D. J. (2001). Investigation of bistatic scattering using numerical techniques and novel near -field measurements. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/126867
Chicago Manual of Style (16th Edition):
Zahn, Daniel Jacob. “Investigation of bistatic scattering using numerical techniques and novel near -field measurements.” 2001. Doctoral Dissertation, University of Michigan. Accessed April 17, 2021.
http://hdl.handle.net/2027.42/126867.
MLA Handbook (7th Edition):
Zahn, Daniel Jacob. “Investigation of bistatic scattering using numerical techniques and novel near -field measurements.” 2001. Web. 17 Apr 2021.
Vancouver:
Zahn DJ. Investigation of bistatic scattering using numerical techniques and novel near -field measurements. [Internet] [Doctoral dissertation]. University of Michigan; 2001. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/2027.42/126867.
Council of Science Editors:
Zahn DJ. Investigation of bistatic scattering using numerical techniques and novel near -field measurements. [Doctoral Dissertation]. University of Michigan; 2001. Available from: http://hdl.handle.net/2027.42/126867

University of Michigan
24.
Patton, Bruce Wayne.
Application of Krylov subspace iterative techniques to the numerical solution of the neutron transport equation.
Degree: PhD, Nuclear engineering, 1996, University of Michigan
URL: http://hdl.handle.net/2027.42/130088
► The application of the Generalized Minimal Residual Method (GMRES) with right preconditioning is examined as an alternative to both standard and accelerated transport sweeps for…
(more)
▼ The application of the Generalized Minimal Residual Method (GMRES) with right preconditioning is examined as an alternative to both standard and accelerated transport sweeps for the iterative solution of the neutron transport equation. A comparison of various incomplete factorization (ILU) type preconditioners is made to determine their effectiveness in accelerating GMRES. An incomplete factorization preconditioner, ILU(τ), which requires the specification of a dropping criteria, τ, proved to be the most efficient in terms of the CPU construction time for the types of problems studied in this dissertation. Such methods require the system equations to be written in matrix form, and the preconditioner involves modifications of the system matrix to produce the preconditioner matrix. The combination of ILU(τ) and GMRES is compared against both diffusion synthetic accelerated and unaccelerated diamond differenced, discrete ordinate transport sweeps for several model problems to assess their competitiveness. It Is found that the ILU(τ)-GMRES combination is most effective for problems with small number of groups and discrete ordinates, especially if the cost of the preconditioner construction can be amortized over several calculations with different source and/or boundary conditions. Physics based preconditioners built upon standard transport sweeping algorithms are also evaluated as to their effectiveness in accelerating the convergence of GMRES. Such preconditioners do not require the additional storage associated with incomplete factorization preconditioners, and the preconditioner construction cost does not exhibit the nonlinear behavior of the incomplete factorization type preconditioner observed in certain types of problems. Physics based preconditioners can also be cast in a matrix free form that eliminates the necessity to store the system matrix, thus providing an additional advantage in memory storage requirements. Moreover, these matrix free sweeps based preconditioners have the desirable feature that the computational time scales linearly with such problem variables as the scattering ratio (c), the number of discrete ordinates, and the number of spatial meshes. GMRES proves to be a robust iterative solver for transport problems, and the development of specific preconditioners for the linear transport equation merit further attention.
Advisors/Committee Members: Holloway, James P. (advisor).
Subjects/Keywords: Application; Equati; Equation; Iterative; Krylov; Neutron; Numerical; Solution; Subspace; Techniques; Transport
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APA ·
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MLA ·
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Export
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APA (6th Edition):
Patton, B. W. (1996). Application of Krylov subspace iterative techniques to the numerical solution of the neutron transport equation. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/130088
Chicago Manual of Style (16th Edition):
Patton, Bruce Wayne. “Application of Krylov subspace iterative techniques to the numerical solution of the neutron transport equation.” 1996. Doctoral Dissertation, University of Michigan. Accessed April 17, 2021.
http://hdl.handle.net/2027.42/130088.
MLA Handbook (7th Edition):
Patton, Bruce Wayne. “Application of Krylov subspace iterative techniques to the numerical solution of the neutron transport equation.” 1996. Web. 17 Apr 2021.
Vancouver:
Patton BW. Application of Krylov subspace iterative techniques to the numerical solution of the neutron transport equation. [Internet] [Doctoral dissertation]. University of Michigan; 1996. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/2027.42/130088.
Council of Science Editors:
Patton BW. Application of Krylov subspace iterative techniques to the numerical solution of the neutron transport equation. [Doctoral Dissertation]. University of Michigan; 1996. Available from: http://hdl.handle.net/2027.42/130088

University of Michigan
25.
Tentzeris, Emmanouil M.
Time-domain numerical techniques for the analysis and design of microwave circuits.
Degree: PhD, Electrical engineering, 1998, University of Michigan
URL: http://hdl.handle.net/2027.42/131339
► This dissertation investigates the effects of the application of the principles of Multiresolution Analysis (MRA) to time-domain numerical techniques used for the analysis and design…
(more)
▼ This dissertation investigates the effects of the application of the principles of Multiresolution Analysis (MRA) to time-domain
numerical techniques used for the analysis and design of microwave circuits. The improvement in the efficiency in terms of memory and execution time requirements is quantified and the inherent capability of MRA to create a mathematically consistent time/space adaptive gridding is exploited. Initially, various aspects concerning the popular finite-difference time-domain technique (F.D.T.D.) are investigated and a memory-efficient waveguide absorber based on analytical Green's functions is developed and applied to the optimization of a specific waveguide probe geometry. After reviewing the general principles of Multiresolution Analysis, novel Multiresolution Time-domain schemes (M.R.T.D.) based on space-domain expansions in scaling and wavelet functions are derived. FDTD implementation schemes (excitation, hard/open boundary and dielectric interfaces) are extended to MRTD schemes based on entire-domain expansion basis, while maintaining similar performance characteristics. These schemes offer the unique opportunity of a multi-point field representation per cell. Battle-Lemarie functions are used throughout the dissertation due to their special qualities. MRTD Schemes in 2D and 2.5D are applied to the
numerical analysis of shielded and open striplines and microstrips. The field patterns and the characteristic impedance are calculated and verified by comparison to reference data. In comparison to Yee's conventional FDTD scheme, the proposed schemes offer memory savings by a factor of 25 and execution time savings by a factor of about 4-5 maintaining a better accuracy for characteristic impedance calculations. The stability and the dispersion performance of the Battle-Lemarie MRTD schemes is investigated for different stencil sizes and for 0-resolution wavelets. Analytical expressions for the maximum stable time-step are derived in a way similar to the magic step of FDTD. A dynamically changing space- and time-adaptive meshing algorithm based on a MRTD Scheme in 2D and on absolute and relative thresholding of the wavelet values is proposed and applied to the
numerical analysis of various nonhomogeneous waveguide geometries offering additional memory economy. As a last step, Intervalic wavelets are added in the time-domain. This Time-Adaptive Time-Domain Technique is used for the analysis of various types of circuits problems with active and passive lumped and distributed elements. This scheme exhibits significant savings in execution time and memory while maintaining a similar accuracy with FDTD.
Advisors/Committee Members: Katehi, Linda P. B. (advisor).
Subjects/Keywords: Analysis; Design; Finite-difference Time-domain; Microwave Circuits; Multiresolution; Numerical; Techniques; Wavelets
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APA ·
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MLA ·
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Export
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APA (6th Edition):
Tentzeris, E. M. (1998). Time-domain numerical techniques for the analysis and design of microwave circuits. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/131339
Chicago Manual of Style (16th Edition):
Tentzeris, Emmanouil M. “Time-domain numerical techniques for the analysis and design of microwave circuits.” 1998. Doctoral Dissertation, University of Michigan. Accessed April 17, 2021.
http://hdl.handle.net/2027.42/131339.
MLA Handbook (7th Edition):
Tentzeris, Emmanouil M. “Time-domain numerical techniques for the analysis and design of microwave circuits.” 1998. Web. 17 Apr 2021.
Vancouver:
Tentzeris EM. Time-domain numerical techniques for the analysis and design of microwave circuits. [Internet] [Doctoral dissertation]. University of Michigan; 1998. [cited 2021 Apr 17].
Available from: http://hdl.handle.net/2027.42/131339.
Council of Science Editors:
Tentzeris EM. Time-domain numerical techniques for the analysis and design of microwave circuits. [Doctoral Dissertation]. University of Michigan; 1998. Available from: http://hdl.handle.net/2027.42/131339
26.
Flávia Braga Ramos.
As escadas de Heisenberg de N pernas.
Degree: 2013, Federal University of Uberlândia
URL: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4932
► Compostos como o pirofosfato de vanadil (VO2)P2O7 e alguns sistemas de cupratos (exemplo: SrCu2O3 e Sr2Cu3O5) são realizações experimentais das escadas de Heisenberg. Estes compostos…
(more)
▼ Compostos como o pirofosfato de vanadil (VO2)P2O7 e alguns sistemas de cupratos (exemplo: SrCu2O3 e Sr2Cu3O5) são realizações experimentais das escadas de Heisenberg. Estes compostos são exemplos bem conhecidos de sistemas fortemente correlacionados. A física destes sistemas é descrita, corretamente, somente por métodos não perturbativos. Neste trabalho, nós investigamos as escadas de Heisenberg de N pernas com spin-S usando a técnica do grupo de renormalização da matriz de densidade (DMRG). Nós obtivemos estimativas da energia do estado fundamental por sítio, no limite termodinâmico (e∞), assim como do gap de spin (ΔS) de escadas com spin até S = 5/2 . Nós encontramos que para escadas de spin semi-inteiro o gap é nulo (finito) para N ímpar (par); enquanto que escadas de spin inteiro nossos resultados indicam um gap de spin finito, independente do número de pernas. Esses resultados estão em acordo com a conjectura de Haldane-Sierra [13]. Nós estimamos, também, o valor de e∞ para o modelo de Heisenberg bidimensional com spin-S a partir das energias do estado fundamental, no limite termodinâmico, das escadas de Heisenberg.
Compounds such as vanadyl pirophosphate (VO2)P2O7 and some cuprate systems (example: SrCu2O3 and Sr2Cu3O5) are experimental realizations of the Heisenberg ladders. These compounds are well known examples of strongly correlated systems. The physics of these systems is described, correctly, only by non-perturbative methods. In this work, we investigate the spin-S N-leg Heisenberg ladders using the density matrix renormalization group (DMRG) technique. We obtain estimates of the ground state energy per site, in thermodynamic limit (e∞), as well as of the spin gap (ΔS) for the ladders with spin up to S = 5/2 . We found that for half-integer spin ladders the spin gap is zero (finite) for N odd (even); whereas for the integer spin ladders our results support a finite spin gap, independent of the number of legs. These results are in agreement with the Haldane-Sierras conjecture [13]. We also estimate the value of e∞ for the two-dimensional spin-S Heisenberg model from the ground state energies, in the thermodynamic limit, of the Heisenberg ladders.
Advisors/Committee Members: Augusto Miguel Alcalde Milla, Jose Candido Xavier, Raimundo Rocha dos Santos.
Subjects/Keywords: Técnicas numéricas; Princípio da incerteza de Heisenberg; DMRG; Mecânica quântica; Gap de sin; Energias; Numerical techniques; FISICA; Heisenberg ladders; Energies; Escadas de Heisenberg
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Ramos, F. B. (2013). As escadas de Heisenberg de N pernas. (Thesis). Federal University of Uberlândia. Retrieved from http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4932
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ramos, Flávia Braga. “As escadas de Heisenberg de N pernas.” 2013. Thesis, Federal University of Uberlândia. Accessed April 17, 2021.
http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4932.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ramos, Flávia Braga. “As escadas de Heisenberg de N pernas.” 2013. Web. 17 Apr 2021.
Vancouver:
Ramos FB. As escadas de Heisenberg de N pernas. [Internet] [Thesis]. Federal University of Uberlândia; 2013. [cited 2021 Apr 17].
Available from: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4932.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ramos FB. As escadas de Heisenberg de N pernas. [Thesis]. Federal University of Uberlândia; 2013. Available from: http://www.bdtd.ufu.br//tde_busca/arquivo.php?codArquivo=4932
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
27.
Vu, Anh Quang.
Etude des mécanismes de corrosion - cicatrisation d'aciers revêtus par des alliages d'aluminium : sur tranche et en zone confinée : approche expérimentale et numérique : Study of the self healing mechanism of aluminium coated steels on cut edge specimens in confined media : experimental and numerical approaches.
Degree: Docteur es, Chimie - physique, 2012, Université de Bourgogne
URL: http://www.theses.fr/2012DIJOS062
► L’objectif de ce travail était d’étudier les mécanismes de corrosion-cicatrisation d’aciers revêtus par des alliages d’aluminium, sur tranche et en zone confinée. Sur la tranche,…
(more)
▼ L’objectif de ce travail était d’étudier les mécanismes de corrosion-cicatrisation d’aciers revêtus par des alliages d’aluminium, sur tranche et en zone confinée. Sur la tranche, les techniques de mesures locales ont été utilisées pour étudier le comportement de deux types de revêtements sacrificiels : l’un étant constitué d’un alliage d’aluminium à 55% en masse et de Zn (Aluzinc) et d’un alliage d’aluminium contenant environ 11% silicium (Alusi). L’ensemble des résultats montre que les revêtements à base alliages d’aluminium ont un comportement sacrificiel qui dépend fortement de leur composition selon le type d’environnement concerné. Si le milieu corrosif contient des chlorures il est plus facile d’amorcer et/ou de stabiliser le comportement sacrificiel. Cela est par exemple parfaitement illustré par le comportement du revêtement Alusi qui reste passif dans le milieu sulfate et donc ne permet aucune protection à l’acier. Par contre pour les revêtements 55%Al-Zn, on a pu constater un effet sacrificiel très stable en milieu chloruré (l’acier est protégé cathodiquement) qui se confirme en milieu sulfate mais seulement pour de courtes périodes d'immersion (t < 1 h). L’étude du comportement de ces mêmes traitements de surface en situation de corrosion perforante a permis de proposer un dispositif d’étude représentatif ayant une géométrie assez proche de celles des éprouvettes qui ont fait l’objet d’une normalisation. On a mis l’accent sur la possibilité de mesurer l’évolution du pH en positionnant de manière précise une microélectrode de pH à membrane liquide sélective dans une cavité modèle. Par des simulations numériques basées sur des modèles de transport et de réaction on a montré que l’on pouvait calculer les gradients chimiques et électriques dans la cavité testée en utilisant la résolution des équations de transport (Nernst-Planck) par la méthode des éléments finis
The objective of this work was to study the self healing mechanisms of aluminium based alloy coated steels on cut-edge specimens in confined condition. In situ chemical and electrochemical probe techniques have been used to study the behaviour of two types of sacrificial coatings: one is consisting on an Al alloy containing 55% of Zn (Aluzinc) and the other one contains about 11% of Silicon (Alusi). The results showed that the aluminium based coatings have a sacrificial behaviour which depends strongly on their composition and on the environment concerned. In a corrosive environment containing chlorides it is easier to initiate and / or stabilize the sacrificial behaviour. This is clearly illustrated by the behaviour of the Alusi coating which remains passive in a neutral sulphate solution and therefore does not protect the steel. On the opposite, for 55% Al-Zn coatings, a very stable sacrificial effect has been demonstrated in chloride medium (steel is cathodically protected) which is confirmed in sulphate medium but only for short periods of immersion (t <1 h). An experimental setup allowing pH measurements inside a confined volume representing a…
Advisors/Committee Members: Vuillemin, Bruno (thesis director), Oltra, Roland (thesis director).
Subjects/Keywords: Acier galvanisé; Protection sacrificielle; Méthodes locales électrochimiques; Assemblages; Simulation numérique; Galvanized steel; Anodic protection; Local probe techniques; Lapped joint; Numerical simulation; 541.37; 620.16; 669
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Vu, A. Q. (2012). Etude des mécanismes de corrosion - cicatrisation d'aciers revêtus par des alliages d'aluminium : sur tranche et en zone confinée : approche expérimentale et numérique : Study of the self healing mechanism of aluminium coated steels on cut edge specimens in confined media : experimental and numerical approaches. (Doctoral Dissertation). Université de Bourgogne. Retrieved from http://www.theses.fr/2012DIJOS062
Chicago Manual of Style (16th Edition):
Vu, Anh Quang. “Etude des mécanismes de corrosion - cicatrisation d'aciers revêtus par des alliages d'aluminium : sur tranche et en zone confinée : approche expérimentale et numérique : Study of the self healing mechanism of aluminium coated steels on cut edge specimens in confined media : experimental and numerical approaches.” 2012. Doctoral Dissertation, Université de Bourgogne. Accessed April 17, 2021.
http://www.theses.fr/2012DIJOS062.
MLA Handbook (7th Edition):
Vu, Anh Quang. “Etude des mécanismes de corrosion - cicatrisation d'aciers revêtus par des alliages d'aluminium : sur tranche et en zone confinée : approche expérimentale et numérique : Study of the self healing mechanism of aluminium coated steels on cut edge specimens in confined media : experimental and numerical approaches.” 2012. Web. 17 Apr 2021.
Vancouver:
Vu AQ. Etude des mécanismes de corrosion - cicatrisation d'aciers revêtus par des alliages d'aluminium : sur tranche et en zone confinée : approche expérimentale et numérique : Study of the self healing mechanism of aluminium coated steels on cut edge specimens in confined media : experimental and numerical approaches. [Internet] [Doctoral dissertation]. Université de Bourgogne; 2012. [cited 2021 Apr 17].
Available from: http://www.theses.fr/2012DIJOS062.
Council of Science Editors:
Vu AQ. Etude des mécanismes de corrosion - cicatrisation d'aciers revêtus par des alliages d'aluminium : sur tranche et en zone confinée : approche expérimentale et numérique : Study of the self healing mechanism of aluminium coated steels on cut edge specimens in confined media : experimental and numerical approaches. [Doctoral Dissertation]. Université de Bourgogne; 2012. Available from: http://www.theses.fr/2012DIJOS062

University of Vienna
28.
Domes, Ferenc.
Rigorous techniques for continuous constraint satisfaction problems.
Degree: 2010, University of Vienna
URL: http://othes.univie.ac.at/10626/
► Diese Arbeit beschäftigt sich mit rigorosen Techniken für das Lösen kontinuierlicher Zulässigkeitsprobleme. Das heißt, wir suchen nach einem oder allen Punkte, genannt zulässige Punkte, die…
(more)
▼ Diese Arbeit beschäftigt sich mit rigorosen Techniken für das Lösen kontinuierlicher Zulässigkeitsprobleme. Das heißt, wir suchen nach einem oder allen Punkte, genannt zulässige Punkte, die eine Familie von Gleichungen und/oder Ungleichungen erfüllen, die wir im Weiteren Nebenbedingungen nennen werden. Zahlreiche Anwendungen führen auf kontinuierliche Zulässigkeitsprobleme. Neue und bereits existierende moderne Methoden werden präsentiert und integriert in GloptLab, eine neue, leicht bedienbare Test- und Entwicklungsplattform zum Lösen quadratischer Zulässigkeitsprobleme. Der Lösungsalgorithmus beruht auf dem Grundprinzip von Branch-and-Prune und auf Filterung. Filterungsmethoden dienen zur Verkleinerung/Reduktion einer Box, definiert als das kartesische Produkt der Intervalle, die die Schranken an die Variablen festlegen. Um den Verlust zulässiger Punkte zu vermeiden, werden alle Fehlerabschätzungen rigoros mittels Intervallarithmetik und gerichteter Rundung durchgeführt. Das stellt sicher, dass alle Rechnungen auch in Gleitkommaarithmetik gültig sind. In der Doktorarbeit werden die folgenden Themen diskutiert: der mathematische Hintergrund, Algorithmen und Tests für Constraint-Propagation, strikt konvexe Einschließungen, lineare Relaxationen, das Berechnen, korrekte Benutzen und Verifizieren approximativ zulässiger Punkte, optimale Skalierung und diverse Hilfsmethoden. Insbesondere:
- Constraint-Propagation basiert auf einer Folge von Schritten, die jeweils eine einzelne Nebenbedingung verwenden. Traditionelle Techniken werden durch eine spezielle quadratische Methode erweitert, die neue Verfahren für die Eliminierung bilinearer Einträge und für das Berechnen optimaler Einschließungen für separable quadratische Ausdrücke verwendet.
- Eine quadratische Ungleichungsnebenbedingung, die eine positiv definite Hesse-Matrix besitzt, definiert ein Ellipsoid. Eine spezielle rundungsfehlerkontrollierte Version der Cholesky-Zerlegung wird verwendet, um die strikt konvexe quadratische Nebenbedingungen in Norm-Ungleichungen zu transformieren. Für diese ist es dann einfach, die Intervall-Hülle analytisch zu bestimmen.
- Diverse Methoden für die Erzeugung linearer Relaxationen werden diskutiert, kombiniert und erweitert. Teilweise verbesserte, existierende und neue Verfahren für das rigorose Einschließen der Lösungsmenge linearer Systeme werden präsentiert.
- Eine Vielzahl von Beispielen demonstrieren, dass die präsentierten Verfahren einander ergänzen. Außerdem zeigen sie, wie man Lösungsstrategien entwickelt, die Zulässigkeitsprobleme global und effizient lösen.
This thesis contributes rigorous techniques for solving continuous constraint satisfaction problems, i.e., finding one or all points (called feasible points) satisfying a given family of equations and/or inequalities (called constraints). Many real word problems are continuous constraint satisfaction problems. New and old state of the art methods are presented, integrated in GloptLab, a new easy-to-use testing and development platform for solving quadratic…
Subjects/Keywords: 31.76 Numerische Mathematik; 31.80 Angewandte Mathematik; kontinuierliche Zulässigkeitsprobleme / rigorose Methoden / quadratische Nebenbedingungen / Optimierung / numerische Mathematik; continuous constraint satisfaction problems / rigorous techniques / quadratic constraints / optmiziation / numerical mathematics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Domes, F. (2010). Rigorous techniques for continuous constraint satisfaction problems. (Thesis). University of Vienna. Retrieved from http://othes.univie.ac.at/10626/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Domes, Ferenc. “Rigorous techniques for continuous constraint satisfaction problems.” 2010. Thesis, University of Vienna. Accessed April 17, 2021.
http://othes.univie.ac.at/10626/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Domes, Ferenc. “Rigorous techniques for continuous constraint satisfaction problems.” 2010. Web. 17 Apr 2021.
Vancouver:
Domes F. Rigorous techniques for continuous constraint satisfaction problems. [Internet] [Thesis]. University of Vienna; 2010. [cited 2021 Apr 17].
Available from: http://othes.univie.ac.at/10626/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Domes F. Rigorous techniques for continuous constraint satisfaction problems. [Thesis]. University of Vienna; 2010. Available from: http://othes.univie.ac.at/10626/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
29.
Benhaddou, Taha.
Influence de la précharge sur tenue statique et fatigue des assemblages boulonnés : Influence de la précharge sur la tenue statique et fatigue des assemblages boulonnés.
Degree: Docteur es, Génie Mécanique, Mécanique des Matériaux, 2015, Toulouse, INSA
URL: http://www.theses.fr/2015ISAT0044
► La maîtrise de la pré-tension revêt d’une grande importance pour garantir la tenue mécanique des assemblages boulonnés, et ce quel que soit le mode de…
(more)
▼ La maîtrise de la pré-tension revêt d’une grande importance pour garantir la tenue mécanique des assemblages boulonnés, et ce quel que soit le mode de sollicitations auquel ils sont soumis. En particulier, pour les chargements transverses et sous sollicitations de fatigue, un niveau de pré-tension insuffisant ne permet pas d’exploiter la capacité de transfert d’effort des interfaces entre pièces assemblées. Un niveau de pré-tension très important n’est pas souhaitable non plus, car cela génère des phénomènes de fatigue de contact ou de matage excessif sous tête qui ont un effet néfaste sur la durée de vie des assemblages et des structures aéronautiques. Le serrage contrôlé des fixations permet ainsi de produire et de maintenir un équilibre entre les modes de transfert d’effort, permettant ainsi d’exploiter pleinement leur potentiel et obtenir une tenue optimale de l’assemblage. L’objectif de ce travail est d’apporter une contribution à la compréhension et à l’exploitation des assemblages boulonnés à serrage contrôlé. Une approche hybride a été adoptée afin de démontrer l’effet bénéfique d’une pré-tension contrôlée. La modélisation numérique a permis de comprendre les mécanismes de transfert d’effort et de prédire la tenue mécanique des assemblages aéronautiques de façon satisfaisante. La démarche expérimentale a été exclusivement basée sur des techniques dites de serrages alternatifs. L’objectif est d’avoir une faible incertitude sur la valeur de la précontrainte installée, permettant d’évaluer la performance mécanique des assemblages boulonnés. La tenue en fatigue des assemblages boulonnés, travaillant en matage-cisaillement, est largement améliorée grâce à l’application d’une précontrainte précise. La maîtrise des paramètres intrinsèques au maintien de la force axiale de serrage tel que la nature de l’interface entre pièces assemblées, la rigidité des fixations et la nature de l’ajustement, permet également d’esquisser un potentiel d’optimisation non négligeable des assemblages boulonnés.
Axial preload is a fundamental parameter that needs to be correctly mastered in order to ensure the mechanical strength of bolted joints. In the case of bolted shear joints under fatigue solicitations, a low preload does not allow to exploit the load carrying capacity of the friction interfaces. A high preload is undesirable as it can generate fretting fatigue phenomena or excessive under head contact pressure that may lead to decrease fatigue lives of aeronautical joints and structures. Controlled preload application generates and maintains equilibrium of load transfer mechanisms, inducing a full use of their potential and leading to an optimal fatigue life of the joint. This study focuses on aeronautical preloaded joints with the objective of understanding the effects of controlled preload over the mechanics of shear joints and exploiting the contribution of preload to enhance their fatigue lives. For this purpose, a hybrid approach has been adopted to demonstrate the beneficial effect of controlled preload. Numerical…
Advisors/Committee Members: Daidié, Alain (thesis director), Stephan, Pierre (thesis director).
Subjects/Keywords: Assemblage boulonné; Approche expérimentale; Simulation numérique; Fatigue des assemblages; Pré-tension contrôlée; Serrage alternatif; Bolted joints; Experimental behavior; Numerical simulation; Fatigue of assemblies; Controlled preload; Alternative tightening techniques; 620.1
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Benhaddou, T. (2015). Influence de la précharge sur tenue statique et fatigue des assemblages boulonnés : Influence de la précharge sur la tenue statique et fatigue des assemblages boulonnés. (Doctoral Dissertation). Toulouse, INSA. Retrieved from http://www.theses.fr/2015ISAT0044
Chicago Manual of Style (16th Edition):
Benhaddou, Taha. “Influence de la précharge sur tenue statique et fatigue des assemblages boulonnés : Influence de la précharge sur la tenue statique et fatigue des assemblages boulonnés.” 2015. Doctoral Dissertation, Toulouse, INSA. Accessed April 17, 2021.
http://www.theses.fr/2015ISAT0044.
MLA Handbook (7th Edition):
Benhaddou, Taha. “Influence de la précharge sur tenue statique et fatigue des assemblages boulonnés : Influence de la précharge sur la tenue statique et fatigue des assemblages boulonnés.” 2015. Web. 17 Apr 2021.
Vancouver:
Benhaddou T. Influence de la précharge sur tenue statique et fatigue des assemblages boulonnés : Influence de la précharge sur la tenue statique et fatigue des assemblages boulonnés. [Internet] [Doctoral dissertation]. Toulouse, INSA; 2015. [cited 2021 Apr 17].
Available from: http://www.theses.fr/2015ISAT0044.
Council of Science Editors:
Benhaddou T. Influence de la précharge sur tenue statique et fatigue des assemblages boulonnés : Influence de la précharge sur la tenue statique et fatigue des assemblages boulonnés. [Doctoral Dissertation]. Toulouse, INSA; 2015. Available from: http://www.theses.fr/2015ISAT0044

University of Miami
30.
Gonzalez-Ramirez, Noemi.
Simulating Flood Propagation in Urban Areas using a Two-Dimensional Numerical Model.
Degree: PhD, Civil, Architectural and Environmental Engineering (Engineering), 2010, University of Miami
URL: https://scholarlyrepository.miami.edu/oa_dissertations/648
► A two-dimensional numerical model (RiverFLO-2D) has been enhanced to simulate flooding of urban areas by developing an innovative wet and dry surface algorithm, accounting…
(more)
▼ A two-dimensional
numerical model (RiverFLO-2D) has been enhanced to simulate flooding of urban areas by developing an innovative wet and dry surface algorithm, accounting for variable rainfall, and recoding the model computer program for parallel computing. The model formulation is based on the shallow water equations solved with an explicit time-stepping element-by-element finite element method. The dry-wet surface algorithm is based on a local approximation of the continuity and momentum equations for elements that are completely dry. This algorithm achieves global volume conservation in the finite element, even for flows over complex topographic surfaces. A new module was implemented to account for variable rainfall in space and time using NEXRAD precipitation estimates. The resulting computer code was parallelized using OpenMP Application Program Interface, which allows the model to run up to 5 times faster on multiple core computers. The model was verified with analytical solutions and validated with laboratory and field data. Model application to the Malpasset dam break and Sumacarcel flooding event show that the model accurately predicts flood wave travel times and water depths for these numerically demanding real cases. To illustrate the predictive capability of the enhanced model, an application was made of the city of Sweetwater flooding in Miami-Dade County, FL caused by the Hurricane Irene. The simulation starts with dry bed and rainfall is provided by NEXRAD estimates. Integrating NEXRAD rainfall estimates, developing a novel dry-wet area algorithm and parallelizing RiverFLO-2D code, this dissertation presents a proof of concept to accurately and efficiently predict floods in urban areas, identifying future improvements along this line of research.
Advisors/Committee Members: Antonio Nanni, David Chin, James Englehardt, Fernando Miralles-Wilhelm, Reinaldo Garcia-Martinez, Chandra S. Pathak.
Subjects/Keywords: Sweetwater; Dam Break; Sumacarcel; Malpasset; Infiltration; Green-Ampt; Parallel Techniques; Wet And Dry; OpenMP; Shallow Water Equations; Flooding; Numerical Model; Explicit Time Stepping; Hurricane Irene; NEXRAD; Urban Areas
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APA (6th Edition):
Gonzalez-Ramirez, N. (2010). Simulating Flood Propagation in Urban Areas using a Two-Dimensional Numerical Model. (Doctoral Dissertation). University of Miami. Retrieved from https://scholarlyrepository.miami.edu/oa_dissertations/648
Chicago Manual of Style (16th Edition):
Gonzalez-Ramirez, Noemi. “Simulating Flood Propagation in Urban Areas using a Two-Dimensional Numerical Model.” 2010. Doctoral Dissertation, University of Miami. Accessed April 17, 2021.
https://scholarlyrepository.miami.edu/oa_dissertations/648.
MLA Handbook (7th Edition):
Gonzalez-Ramirez, Noemi. “Simulating Flood Propagation in Urban Areas using a Two-Dimensional Numerical Model.” 2010. Web. 17 Apr 2021.
Vancouver:
Gonzalez-Ramirez N. Simulating Flood Propagation in Urban Areas using a Two-Dimensional Numerical Model. [Internet] [Doctoral dissertation]. University of Miami; 2010. [cited 2021 Apr 17].
Available from: https://scholarlyrepository.miami.edu/oa_dissertations/648.
Council of Science Editors:
Gonzalez-Ramirez N. Simulating Flood Propagation in Urban Areas using a Two-Dimensional Numerical Model. [Doctoral Dissertation]. University of Miami; 2010. Available from: https://scholarlyrepository.miami.edu/oa_dissertations/648
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