subject:(simulations)

Université de Neuchâtel

1. Badin, Alice. Application of carbon-chlorine isotopic analysis to determine the origin and fate of chlorinated ethenes in groundwater.

Degree: 2015, Université de Neuchâtel

URL: http://doc.rero.ch/record/322777

► Chlorinated ethenes are ubiquitous groundwater contaminants posing a threat to one of our main drinking water sources. Despite their spill history dating back to more… (more)

▼ Chlorinated ethenes are ubiquitous groundwater contaminants posing a threat to one of our main drinking water sources. Despite their spill history dating back to more than 40 years ago, these contaminants are still found in groundwater in numerous industrially developed countries due to their persistence, difficult characterisation in the subsurface and resulting challenging remediation. When adequate redox conditions, microbial communities and/or minerals are present, these compounds are known to undergo natural degradation. Applying natural attenuation as a management strategy is thus being increasingly considered as it constitutes a cost-effective environmental friendly approach. Tools enabling to differentiate degradation pathways, predict the fate of contaminants as well as understand the mechanisms underlying their degradation thus constitute the key to a better management of chlorinated ethenes contaminated sites. Methods allowing for contaminant source tracking are also of interest in a legal context where the contamination precursor is searched for. Among the various tools applied to address such questions, compound specific isotopic analysis (CSIA) – which consists in measuring the ratio between light and heavy stable isotopes of one element (i.e. isotopic composition) of a compound – is being increasingly applied. This thesis was aimed at exploring the benefits and limits of applying CSIA to substantiate the origin and fate of chlorinated ethenes in groundwater. For this purpose, a first field study aimed at investigating the performance of dual Carbon-Chlorine (C-Cl) isotopic analysis for contaminant source discrimination was carried out. Laboratory experiments were then performed in view of getting more insight in the reaction mechanisms underlying tetrachloroethylene (PCE) reductive dechlorination and to explore the potential of dual C-Cl isotopic analysis to differentiate degradation pathways. A mathematical model was further developed to comprehensively simulate chlorinated ethenes C and Cl isotopic evolution during sequential dechlorination. Simulations were compared to experimental data in order to evaluate this model in its ability to reproduce and thus predict real data. Finally, the contribution of C and Cl isotopic analysis to identify changes in redox processes further affecting chlorinated ethenes in groundwater was challenged when assessing the effect of source thermal remediation by steam injection on a chlorinated ethenes plume. For regulatory reasons, determining the contamination perpetrator is often of interest. As the isotopic signature of solvents produced from different manufacturers showed a large variability, CSIA was suggested as a method to discriminate the origin of contamination between different suspected sources by comparing their isotopic signatures. Such application however relies on the assumption that isotopic signatures will also differ in the field. Our first goal was thus to determine the source isotopic variability of PCE at a country scale. For this purpose,… Advisors/Committee Members: Daniel (Dir.), Mario (Codir.).

Subjects/Keywords: simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Badin, A. (2015). Application of carbon-chlorine isotopic analysis to determine the origin and fate of chlorinated ethenes in groundwater. (Thesis). Université de Neuchâtel. Retrieved from http://doc.rero.ch/record/322777

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Badin, Alice. “Application of carbon-chlorine isotopic analysis to determine the origin and fate of chlorinated ethenes in groundwater.” 2015. Thesis, Université de Neuchâtel. Accessed February 22, 2020. http://doc.rero.ch/record/322777.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Badin, Alice. “Application of carbon-chlorine isotopic analysis to determine the origin and fate of chlorinated ethenes in groundwater.” 2015. Web. 22 Feb 2020.

Vancouver:

Badin A. Application of carbon-chlorine isotopic analysis to determine the origin and fate of chlorinated ethenes in groundwater. [Internet] [Thesis]. Université de Neuchâtel; 2015. [cited 2020 Feb 22]. Available from: http://doc.rero.ch/record/322777.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Badin A. Application of carbon-chlorine isotopic analysis to determine the origin and fate of chlorinated ethenes in groundwater. [Thesis]. Université de Neuchâtel; 2015. Available from: http://doc.rero.ch/record/322777

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

McGill University

2. Boukerche, Azzedine. Parallel Simulation with Clustered Processes: Principles and Practice.

Degree: PhD, School of Computer Science, 1995, McGill University

URL: http://digitool.library.mcgill.ca/thesisfile156823.pdf

►

Note:

Simulations are widely used in analyzing systems such as large communication networks, computer-aided design (CAD) circuits, semiconductor manufacturing line, and many aerospace and military… (more)

Subjects/Keywords: Simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Boukerche, A. (1995). Parallel Simulation with Clustered Processes: Principles and Practice. (Doctoral Dissertation). McGill University. Retrieved from http://digitool.library.mcgill.ca/thesisfile156823.pdf

Chicago Manual of Style (16^th Edition):

Boukerche, Azzedine. “Parallel Simulation with Clustered Processes: Principles and Practice.” 1995. Doctoral Dissertation, McGill University. Accessed February 22, 2020. http://digitool.library.mcgill.ca/thesisfile156823.pdf.

MLA Handbook (7^th Edition):

Boukerche, Azzedine. “Parallel Simulation with Clustered Processes: Principles and Practice.” 1995. Web. 22 Feb 2020.

Vancouver:

Boukerche A. Parallel Simulation with Clustered Processes: Principles and Practice. [Internet] [Doctoral dissertation]. McGill University; 1995. [cited 2020 Feb 22]. Available from: http://digitool.library.mcgill.ca/thesisfile156823.pdf.

Council of Science Editors:

Boukerche A. Parallel Simulation with Clustered Processes: Principles and Practice. [Doctoral Dissertation]. McGill University; 1995. Available from: http://digitool.library.mcgill.ca/thesisfile156823.pdf

McGill University

3. Boukerche, Azzedine. Parallel Simulation with Clustered Processes : Principles and Practice.

Degree: PhD, School of Computer Science, 1995, McGill University

URL: http://digitool.library.mcgill.ca/thesisfile161986.pdf

►

Note:

Simulations are widely used in analyzing systems such as large communication networks, computer- aided design (CAD) circuits, semiconductor manufacturing line, and many aerospace and… (more)

Subjects/Keywords: Simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Boukerche, A. (1995). Parallel Simulation with Clustered Processes : Principles and Practice. (Doctoral Dissertation). McGill University. Retrieved from http://digitool.library.mcgill.ca/thesisfile161986.pdf

Chicago Manual of Style (16^th Edition):

Boukerche, Azzedine. “Parallel Simulation with Clustered Processes : Principles and Practice.” 1995. Doctoral Dissertation, McGill University. Accessed February 22, 2020. http://digitool.library.mcgill.ca/thesisfile161986.pdf.

MLA Handbook (7^th Edition):

Boukerche, Azzedine. “Parallel Simulation with Clustered Processes : Principles and Practice.” 1995. Web. 22 Feb 2020.

Vancouver:

Boukerche A. Parallel Simulation with Clustered Processes : Principles and Practice. [Internet] [Doctoral dissertation]. McGill University; 1995. [cited 2020 Feb 22]. Available from: http://digitool.library.mcgill.ca/thesisfile161986.pdf.

Council of Science Editors:

Boukerche A. Parallel Simulation with Clustered Processes : Principles and Practice. [Doctoral Dissertation]. McGill University; 1995. Available from: http://digitool.library.mcgill.ca/thesisfile161986.pdf

4. Arzoumanian, Emmanuel. Développement du projet SETUP (Simulations Expérimentale et Théorique Utiles à la planétologie) : application à l'étude de la physico-chimie de l'atmosphère de Titan : Developpement of the SETUP project (experimental and theoretical simulations useful for planetology) : studies applied to the physical chemistry of Titan's atmosphere.

Degree: Docteur es, Astronomie, astrophysique, 2010, Université Paris-Est

URL: http://www.theses.fr/2010PEST1046

► Le travail de cette thèse s’inscrit dans le cadre du développement du programme S.E.T.U.P. (Simulations Expérimentale et Théorique Utiles à la planétologie) dont l’objectif est… (more)

▼ Le travail de cette thèse s’inscrit dans le cadre du développement du programme S.E.T.U.P. (Simulations Expérimentale et Théorique Utiles à la planétologie) dont l’objectif est d’effectuer des simulations représentatives de l’atmosphère de Titan et de déterminer les processus physico-chimiques qui y sont impliqués. Pour ce faire, un dispositif expérimental combine deux types de dépôts d’énergie (électrons et photons) représentatifs des processus de dissociation des molécules N2 et CH4 qui composent majoritairement l’atmosphère de Titan. De plus, une technique d’analyse par spectroscopie laser doit permettre d’identifier et de quantifier des produits et donc de suivre l’évolution du mélange réactionnel in situ en temps réel.La méthodologie adoptée pour la mise en œuvre des expériences de simulations a été de caractériser l’ensemble des étapes depuis les sources énergétiques jusqu’à l’analyse des produits et de développer les outils de modélisation nécessaires à l’interprétation des expériences.Dans un premier temps, il s’est agit de mieux caractériser les deux types de photolyse du méthane envisagés. En effet, il est prévu d’utiliser soit une lampe UV délivrant un rayonnement à Lyman-α (121,6 nm) soit un laser excimère KrF pulsé délivrant un rayonnement à 248 nm. Ce dernier doit en effet permettre des études cinétiques concernant les espèces à courte durée de vie. Des expériences d’irradiation de CH4 et d’un mélange N2/CH4 aux deux longueurs d’onde ont été menées puis simulées grâce à un modèle 0D.L’analyse fine des résultats issus des irradiations de CH4 à Lyman-α montre que des travaux complémentaires sont nécessaires pour comprendre les différences entre les expériences et le modèle chimique. En particulier, une caractérisation de l’émission de la lampe s’est avérée indispensable et a été réalisée afin d’améliorer la compréhension de la chimie mise en jeu. Les résultats obtenus lors de l’irradiation à 248 nm suggèrent que la source laser utilisée pourrait provoquer l’ionisation de CH4 et induire une chimie ionique qui n’était pas envisagée au départ. Ce type d’irradiation pourrait se révéler intéressant pour étudier les processus ionosphériques de l’atmosphère de Titan. En revanche, cette source doit être abandonnée pour l’étude de la chimie des neutres. Une source pulsée à Lyman-α devra être développée.Dans un deuxième temps, trois types d’expériences préliminaires de simulations de l’atmosphère de Titan ont été effectuées. Afin de mieux comprendre l’importance relative de chaque source énergétique, des expériences dites de « plasma » où N2 et CH4 sont dissociés simultanément dans un plasma crée par décharge microonde, ont tout d’abord été menées. Ensuite, des expériences dites de « post-décharge » où CH4 est introduit dans l’enceinte après la dissociation de N2 par plasma, ont été conduites. Et enfin, des expériences dites de « couplage », censées mieux représenter les processus de l’atmosphère de Titan où CH4, toujours introduit en post-décharge, est cette fois photodissocié à Lyman-α, ont été réalisées.Lors des… Advisors/Committee Members: Gazeau, Marie-Claire (thesis director).

Subjects/Keywords: Titan; Atmosphere; Simulations; Titan; Atmosphere; Simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Arzoumanian, E. (2010). Développement du projet SETUP (Simulations Expérimentale et Théorique Utiles à la planétologie) : application à l'étude de la physico-chimie de l'atmosphère de Titan : Developpement of the SETUP project (experimental and theoretical simulations useful for planetology) : studies applied to the physical chemistry of Titan's atmosphere. (Doctoral Dissertation). Université Paris-Est. Retrieved from http://www.theses.fr/2010PEST1046

Chicago Manual of Style (16^th Edition):

Arzoumanian, Emmanuel. “Développement du projet SETUP (Simulations Expérimentale et Théorique Utiles à la planétologie) : application à l'étude de la physico-chimie de l'atmosphère de Titan : Developpement of the SETUP project (experimental and theoretical simulations useful for planetology) : studies applied to the physical chemistry of Titan's atmosphere.” 2010. Doctoral Dissertation, Université Paris-Est. Accessed February 22, 2020. http://www.theses.fr/2010PEST1046.

MLA Handbook (7^th Edition):

Arzoumanian, Emmanuel. “Développement du projet SETUP (Simulations Expérimentale et Théorique Utiles à la planétologie) : application à l'étude de la physico-chimie de l'atmosphère de Titan : Developpement of the SETUP project (experimental and theoretical simulations useful for planetology) : studies applied to the physical chemistry of Titan's atmosphere.” 2010. Web. 22 Feb 2020.

Vancouver:

Arzoumanian E. Développement du projet SETUP (Simulations Expérimentale et Théorique Utiles à la planétologie) : application à l'étude de la physico-chimie de l'atmosphère de Titan : Developpement of the SETUP project (experimental and theoretical simulations useful for planetology) : studies applied to the physical chemistry of Titan's atmosphere. [Internet] [Doctoral dissertation]. Université Paris-Est; 2010. [cited 2020 Feb 22]. Available from: http://www.theses.fr/2010PEST1046.

Council of Science Editors:

Arzoumanian E. Développement du projet SETUP (Simulations Expérimentale et Théorique Utiles à la planétologie) : application à l'étude de la physico-chimie de l'atmosphère de Titan : Developpement of the SETUP project (experimental and theoretical simulations useful for planetology) : studies applied to the physical chemistry of Titan's atmosphere. [Doctoral Dissertation]. Université Paris-Est; 2010. Available from: http://www.theses.fr/2010PEST1046

Cornell University

5. Gupta, Ankush. Anisotropic Etching Of Si(100) In Aqueous Solutions .

Degree: 2011, Cornell University

URL: http://hdl.handle.net/1813/29199

► The microelectronics industry has long sought an aqueous etchant that could produce atomically flat Si(100) surfaces by anisotropic etching. This dissertation shows that near-atomically-flat Si(100)… (more)

▼ The microelectronics industry has long sought an aqueous etchant that could produce atomically flat Si(100) surfaces by anisotropic etching. This dissertation shows that near-atomically-flat Si(100) surfaces can be produced by an aqueous silicon etchant - 40% NH4F (aq.). The etching of Si(100) in 40% NH4F (aq.) produced H2 bubbles as a reaction product, which led to significant roughening of the surface if not removed. A near-atomically flat surface was produced if the bubbles were periodically removed from the etching surface. Analysis of the infrared spectrum of the NH4F-etched surface showed that the surface was H-terminated. A new spectral deconvolution technique led to reinterpretation of the spectral bands and revealed the surface structure that is consistent with the STM images of the surface. Investigations of the bubble-induced roughening of Si(100) surface during NH4F etching revealed a new mechanism of {111} microfacet formation on this surface. To understand the etch kinetics that produced the observed morphologies, a fully atomistic kinetic Monte Carlo simulation of Si(100) etching was developed. The simulations showed that previously postulated models of H/Si(100) etching based solely on bond counting or interadsorbate stress cannot explain the experimental etch morphologies. The simulations suggested mechanisms that lead to the formation of flat stripes, hillocks, and rough morphologies observed on etched Si(100) surfaces. The production of long rows observed on the NH4F-etched Si(100) surface could only be explained by the fast etching of dihydrides bonded to monohydrides - termed as "[alpha]-dihydrides". In addition, a comprehensive study of the vibrational spectrum of various Hterminated Si surfaces produced by NH4F (aq.) etching was performed using density functional theory. The simulations predicted stretch mode energies within 2% of the experimentally observed; however, the accuracy of the calculations was strongly affected by interadsorbate strain. Simulation of point defects on H/Si(100) surfaces provided insights into the origin of large heterogeneous broadening observed on NH4F-etched Si(100) surfaces. Advisors/Committee Members: Park, Jiwoong (committeeMember), Loring, Roger F (committeeMember).

Subjects/Keywords: ammonium flouride etching; DFT simulations; KMC simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gupta, A. (2011). Anisotropic Etching Of Si(100) In Aqueous Solutions . (Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/29199

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gupta, Ankush. “Anisotropic Etching Of Si(100) In Aqueous Solutions .” 2011. Thesis, Cornell University. Accessed February 22, 2020. http://hdl.handle.net/1813/29199.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gupta, Ankush. “Anisotropic Etching Of Si(100) In Aqueous Solutions .” 2011. Web. 22 Feb 2020.

Vancouver:

Gupta A. Anisotropic Etching Of Si(100) In Aqueous Solutions . [Internet] [Thesis]. Cornell University; 2011. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/1813/29199.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gupta A. Anisotropic Etching Of Si(100) In Aqueous Solutions . [Thesis]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/29199

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

6. Madipally, Sunil veer Kumar. Simulation of Sawmill Yard Operations Using Software Agents.

Degree: Computer Engineering, 2011, Dalarna University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:du-6026

► Bergkvist insjön AB is a sawmill yard which is capable of producing 350,000 cubic meter of timber every year this requires lot of internal… (more)

▼ Bergkvist insjön AB is a sawmill yard which is capable of producing 350,000 cubic meter of timber every year this requires lot of internal resources. Sawmill operations can be classified as unloading, sorting, storage and production of timber. In the company we have trucks arriving at random they have to be unloaded and sent back at the earliest to avoid queuing up of trucks creating a problem for truck owners. The sawmill yard has to operate with two log stackers that does several tasks including transporting the logs from trucks to measurement station where the logs will be sorted into classes and dropped into pockets from pockets to the sorted timber yard where they are stored and finally from there to sawmill for final processing. The main issue that needs to be answered here is the lining up trucks that are waiting to be unload, creating a problem for both sawmill as well as the truck owners and given huge production volume, it is certain that handling of resources is top priority. A key challenge in handling of resources would be unloading of trucks and finding a way to optimize internal resources. To address this problem i have experimented on different ways of using internal resources, i have designed different cases, in case 1 we have both the log stackers working on sawmill and measurement station. The main objective of having this case is to make sawmill and measurement station to work all the time. Then in case 2, i have divided the work between both the log stackers, one log stacker will be working on sawmill and pocket_control and second log stacker will be working on measurement station and truck. Then in case 3 we have only one log stacker working on all the agents, this case was designed to reduce cost of production, as the experiment cannot be done in real-time due to operational cost, for this purpose simulation is used, preliminary investigation into simulation results suggested that case 2 is the best option has it reduced waiting time of trucks considerably when compared with other cases and it showed 50% increase in optimizing internal resources.

Subjects/Keywords: JADE; Simulations; Discrete-event simulations; JDBC; Database.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Madipally, S. v. K. (2011). Simulation of Sawmill Yard Operations Using Software Agents. (Thesis). Dalarna University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:du-6026

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Madipally, Sunil veer Kumar. “Simulation of Sawmill Yard Operations Using Software Agents.” 2011. Thesis, Dalarna University. Accessed February 22, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:du-6026.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Madipally, Sunil veer Kumar. “Simulation of Sawmill Yard Operations Using Software Agents.” 2011. Web. 22 Feb 2020.

Vancouver:

Madipally SvK. Simulation of Sawmill Yard Operations Using Software Agents. [Internet] [Thesis]. Dalarna University; 2011. [cited 2020 Feb 22]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:du-6026.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Madipally SvK. Simulation of Sawmill Yard Operations Using Software Agents. [Thesis]. Dalarna University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:du-6026

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Georgia

7. Gross, Jonathan. Parallel Monte Carlo simulations of coarse-grained flexible polymers to obtain structural phase diagrams.

Degree: PhD, Physics, 2013, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/gross_jonathan_201308_phd

► In this computational study the focus is put on the thermodynamic behavior of coarse- grained models for flexible polymers. Structural transitions of polymer conformations as… (more)

Subjects/Keywords: Monte Carlo Simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gross, J. (2013). Parallel Monte Carlo simulations of coarse-grained flexible polymers to obtain structural phase diagrams. (Doctoral Dissertation). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/gross_jonathan_201308_phd

Chicago Manual of Style (16^th Edition):

Gross, Jonathan. “Parallel Monte Carlo simulations of coarse-grained flexible polymers to obtain structural phase diagrams.” 2013. Doctoral Dissertation, University of Georgia. Accessed February 22, 2020. http://purl.galileo.usg.edu/uga_etd/gross_jonathan_201308_phd.

MLA Handbook (7^th Edition):

Gross, Jonathan. “Parallel Monte Carlo simulations of coarse-grained flexible polymers to obtain structural phase diagrams.” 2013. Web. 22 Feb 2020.

Vancouver:

Gross J. Parallel Monte Carlo simulations of coarse-grained flexible polymers to obtain structural phase diagrams. [Internet] [Doctoral dissertation]. University of Georgia; 2013. [cited 2020 Feb 22]. Available from: http://purl.galileo.usg.edu/uga_etd/gross_jonathan_201308_phd.

Council of Science Editors:

Gross J. Parallel Monte Carlo simulations of coarse-grained flexible polymers to obtain structural phase diagrams. [Doctoral Dissertation]. University of Georgia; 2013. Available from: http://purl.galileo.usg.edu/uga_etd/gross_jonathan_201308_phd

California State University – Chico

8. Yusta, Jowel I. Generic high speed simulations using FPGAS .

Degree: 2012, California State University – Chico

URL: http://hdl.handle.net/10211.4/459

► There have been simulations performed on FPGAs which are fast and efficient, but the amount of time it takes to create such simulations makes it… (more)

Subjects/Keywords: FPGA simulations PC

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yusta, J. I. (2012). Generic high speed simulations using FPGAS . (Thesis). California State University – Chico. Retrieved from http://hdl.handle.net/10211.4/459

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yusta, Jowel I. “Generic high speed simulations using FPGAS .” 2012. Thesis, California State University – Chico. Accessed February 22, 2020. http://hdl.handle.net/10211.4/459.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yusta, Jowel I. “Generic high speed simulations using FPGAS .” 2012. Web. 22 Feb 2020.

Vancouver:

Yusta JI. Generic high speed simulations using FPGAS . [Internet] [Thesis]. California State University – Chico; 2012. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/10211.4/459.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yusta JI. Generic high speed simulations using FPGAS . [Thesis]. California State University – Chico; 2012. Available from: http://hdl.handle.net/10211.4/459

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Adelaide

9. Nguyen, Thi Kim Phuong. Reservoir simulation studies of formation damage for improved recovery on oil-gas reservoirs.

Degree: 2011, University of Adelaide

URL: http://hdl.handle.net/2440/70889

► This thesis is dedicated to the development of new technologies for sweep improvement due to plugging of highly permeable channels and layers by injected or… (more)

▼ This thesis is dedicated to the development of new technologies for sweep improvement due to plugging of highly permeable channels and layers by injected or lifted or mobilized fines particles. The following methods of improved waterflood have been proposed in the thesis: • Injection of raw or poorly treated water with consequent homogenization of the injectivity profile due to distributed along the well skin factor. • Injection of low salinity or fresh water resulting in lifting of reservoir fines, their migration and further capture by the rock with permeability reduction and redirection of the injected water into unswept area. • Injection of sweet water into watered-up abandoned wells during pressure blowdown in oil and gas reservoirs with strong water support. In the above three cases, the proposal of the new technologies was backed by detailed reservoir simulations. In all cases, the application of the proposed improved oil recovery technology, as forecasted by reservoir simulation, leads to 3-15% of incremental recovery and 2-3 times decrease of the amount of produced and injected water. The technology of raw water injection was developed using Eclipse waterflood BlackOil simulator with modelling of injectivity decline along the well due to plugging of porous media by injected particles. A new numerical procedure describing skin growth with time in each section of long horizontal wells have been developed and implemented into BlackOil Eclipse model. Different configurations of horizontal injectors and producers have been modelled resulting in production forecast with raw waterflooding. The technology of low salinity water injection have been developed using Eclipse reservoir modelling with polymer injection option, which can describe mobilization of fines particles, their migration, capture and subsequent permeability decline. The main physics mechanism of incremental oil recovery found is the diversion of the injected water into unswept zones due to plugging the swept zone by capture particles. The incremental recovery, as obtained by reservoir simulation, is 12%. It may also result in 2 to 3 times decrease in water injection and production. The proposal of a new technology of small bank of fresh water injection into watered-up and abandoned production wells result in lifting of reservoir fines, their migration and plugging the path for invaded aquifer water. It results in decrease of water production and prolongation of oil or gas production from wells. Advisors/Committee Members: Bedrikovetski, Pavel (advisor), Haghighi, Manouchehr (advisor), Australian School of Petroleum (school).

Subjects/Keywords: simulations; formation damage

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nguyen, T. K. P. (2011). Reservoir simulation studies of formation damage for improved recovery on oil-gas reservoirs. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/70889

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nguyen, Thi Kim Phuong. “Reservoir simulation studies of formation damage for improved recovery on oil-gas reservoirs.” 2011. Thesis, University of Adelaide. Accessed February 22, 2020. http://hdl.handle.net/2440/70889.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nguyen, Thi Kim Phuong. “Reservoir simulation studies of formation damage for improved recovery on oil-gas reservoirs.” 2011. Web. 22 Feb 2020.

Vancouver:

Nguyen TKP. Reservoir simulation studies of formation damage for improved recovery on oil-gas reservoirs. [Internet] [Thesis]. University of Adelaide; 2011. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/2440/70889.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nguyen TKP. Reservoir simulation studies of formation damage for improved recovery on oil-gas reservoirs. [Thesis]. University of Adelaide; 2011. Available from: http://hdl.handle.net/2440/70889

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

10. Osté, J.G.A. Analysis of the impact of adjustments to the on board HVAC design by time domain simulations:.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:010e4bdb-6162-4bb4-a7e2-7c9796281532

► The system for heating, ventilation and air conditioning (HVAC) on board of passenger related ships is one of the biggest energy consumer. The system is… (more)

▼ The system for heating, ventilation and air conditioning (HVAC) on board of passenger related ships is one of the biggest energy consumer. The system is vital to the comfort of the crew, passengers and can improve reliability of equipment. Since fuel prices keep rising and green credentials of a ship become more important it is necessary to have insight into the efficiency of the HVAC system. When a ship designer wants to analyse the potential of energy efficient measures, other HVAC layouts or needs to evaluate how the current system will behave in off-design conditions the behaviour of the system in actual service conditions is required. Power demand varies in time due to time dependent variables like ambient conditions and internal heat loads. These aspects can be investigated through time consuming on-site measuring, but this project investigates the possibility to generate this research data by time domain simulations with an HVAC system simulation computer model. The purpose of this project is to develop a tool which provides the ship designer easy access to data of energy consumption and HVAC system behaviour in different service conditions and operational areas, in order to analyse energy efficiency in the early design stage and to gain system understanding to enable the designer to act as smart customer towards HVAC experts and suppliers. The HVAC computer model is constructed from separate component models, each describing a physical discernible part of the HVAC process. These components are verified during extensive verification procedures, to make sure the model behaves as expected. The HVAC system of the AMELS 272 superyacht, a central variable air volume (VAV) configuration with reheating, is used as a benchmark for this project. A test case consisting of one air handling unit (AHU) and two conditioned rooms with dedicated local control is built from the component models. The benchmark simulation showed that the model is able to generate data of the energy consumption and the behaviour of the HVAC system and the separate components within a matter of seconds. From this data the energy consumption of the reheaters proved to be substantial during a one day cycle for every climate. The nominal local flow rate is determined based on the worst case design conditions and because the minimum flow rate of local supply air is limited at a certain percentage of the nominal flow rate, the local supply air provides too much cooling capacity the majority of the day. Therefore a substantial amount of reheating is required. From the system understanding gained with the results from the benchmark simulation several suggestions arose for case studies to increase the efficiency and demonstrate the capabilities of the model to investigate the impact of adjustments in the HVAC system. By raising the AHU supply temperature with one degree up to 14% energy reduction can be realized, with the consequence that less dehumidification occurs in the AHU, resulting in higher indoor relative humidity. Lowering the flow rate limit… Advisors/Committee Members: Hopman, J.J., De Vos, P., Pijnen, G.J.A., Konings, H..

Subjects/Keywords: HVAC; simulations; superyacht

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Osté, J. G. A. (2016). Analysis of the impact of adjustments to the on board HVAC design by time domain simulations:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:010e4bdb-6162-4bb4-a7e2-7c9796281532

Chicago Manual of Style (16^th Edition):

Osté, J G A. “Analysis of the impact of adjustments to the on board HVAC design by time domain simulations:.” 2016. Masters Thesis, Delft University of Technology. Accessed February 22, 2020. http://resolver.tudelft.nl/uuid:010e4bdb-6162-4bb4-a7e2-7c9796281532.

MLA Handbook (7^th Edition):

Osté, J G A. “Analysis of the impact of adjustments to the on board HVAC design by time domain simulations:.” 2016. Web. 22 Feb 2020.

Vancouver:

Osté JGA. Analysis of the impact of adjustments to the on board HVAC design by time domain simulations:. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2020 Feb 22]. Available from: http://resolver.tudelft.nl/uuid:010e4bdb-6162-4bb4-a7e2-7c9796281532.

Council of Science Editors:

Osté JGA. Analysis of the impact of adjustments to the on board HVAC design by time domain simulations:. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:010e4bdb-6162-4bb4-a7e2-7c9796281532

Wake Forest University

11. Howard, Jason D. FIRST-PRINCIPLES SIMULATIONS OF SOLID STATE BATTERY MATERIALS.

Degree: 2018, Wake Forest University

URL: http://hdl.handle.net/10339/90730

► In this work materials with possible applications in all solid state Li-ion batteries are explored using computational methods within the framework of density functional theory… (more)

▼ In this work materials with possible applications in all solid state Li-ion batteries are explored using computational methods within the framework of density functional theory and kinetic Monte Carlo. The density functional theory simulations use fundamental quantum mechanics along with some approximations to produce accurate models of real materials. A smaller portion of the work uses kinetic Monte Carlo to provide qualitative information about the convergence properties of transport coefficients. The materials Li(2+x)SnO3 and Li(2+x)SnS3 are studied in the context of electrodes for Li-ion batteries. Their structures are calculated, conduction pathways for the Li-ions predicted, open cell voltages calculated, and reactivity with lithium at the surface studied. The results for these materials provided insight into existing experimental data from the literature and made predictions for open cell voltages that had not yet been measured. The materials Li4SnS4, Li2OHCl, and Li2OHBr are studied in the context of solid state electrolytes for Li-ion batteries. The structural properties are explored for some materials by calculating Helmholtz free energies to help understand temperature dependent phases. First principles molecular dynamics are performed on some of these materials to gain insight into the mechanisms for Li-ion diffusion, which is related to the Li-ion conductivity. The molecular dynamics simulations of these materials are also used to calculate order parameters, such as time averaged site occupancies, which provide insight into temperature dependent aspects of their structure. The computations using kinetic Monte Carlo are limited to the study of the convergence properties of transport coefficients on a lattice equivalent to the Li lattice of Li2OHCl. These Monte Carlo simulations provide critical insight on the level of statistics needed to converge the transport coefficients related to ionic conductivity. As a whole the simulations in this research provide atomistic level knowledge of real world energy storage materials.

Subjects/Keywords: first principles simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Howard, J. D. (2018). FIRST-PRINCIPLES SIMULATIONS OF SOLID STATE BATTERY MATERIALS. (Thesis). Wake Forest University. Retrieved from http://hdl.handle.net/10339/90730

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Howard, Jason D. “FIRST-PRINCIPLES SIMULATIONS OF SOLID STATE BATTERY MATERIALS.” 2018. Thesis, Wake Forest University. Accessed February 22, 2020. http://hdl.handle.net/10339/90730.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Howard, Jason D. “FIRST-PRINCIPLES SIMULATIONS OF SOLID STATE BATTERY MATERIALS.” 2018. Web. 22 Feb 2020.

Vancouver:

Howard JD. FIRST-PRINCIPLES SIMULATIONS OF SOLID STATE BATTERY MATERIALS. [Internet] [Thesis]. Wake Forest University; 2018. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/10339/90730.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Howard JD. FIRST-PRINCIPLES SIMULATIONS OF SOLID STATE BATTERY MATERIALS. [Thesis]. Wake Forest University; 2018. Available from: http://hdl.handle.net/10339/90730

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Robert Gordon University

12. Doonga, Nitin. The development and implementation of business simulations in higher education in the United Kingdom.

Degree: PhD, 2013, Robert Gordon University

URL: http://hdl.handle.net/10059/946

► This thesis is a study of the development and implementation of business simulations/games in United Kingdom Higher Education institutions. The research takes an holistic approach… (more)

▼ This thesis is a study of the development and implementation of business simulations/games in United Kingdom Higher Education institutions. The research takes an holistic approach and examines the topic from the perspective of developers of business simulations, academics who choose to implement simulations in their teaching, and students who are the end users of business simulations. The research is based on an empirical instructivist research paradigm and takes an holistic approach to consideration of the key issues in design, development and use of business simulations/games from the perspective of developers, academics, and learners. The research takes a pragmatic approach to the application of research methods. It relies mainly on the use of qualitative methods to examine in detail the perceptions of learners. A typology of business simulation/games was established and a set of six educational objectives associated with use of business simulations was derived from a study of the literature. Surveys of developers and academics were conducted in order to determine the extent to which both groups shared a common perception of key features which should be exhibited by a business simulation and the pedagogical objectives which business simulations could support. A wide range of literature in the field of educational technology was analysed to determine the manner in which business simulations supported current views on pedagogic theories and also models of learning. The manner in which the pedagogical objectives of simulations were evaluated was then considered and, through a critical review of the literature, a framework for evaluation of business simulations was developed. The framework for evaluation was used in a case study evaluation of Masters students at the Robert Gordon University, the United Kingdom. The evaluation drew on illuminative and integrative evaluation approaches. Drawing on the literature and the findings of the surveys of academics and developers the evaluation explored the key question of whether or not the use of the business simulation achieved the pedagogical objectives which it was intended to achieve, examined the process by which students learn using a business simulation, and did this in the authentic context in which the business simulation was used. The results of the literature analysis and empirical surveys were used to summarize the critical success factors in developing and implementing business simulations in the Higher Education curriculum in the UK. Issues which arose as barriers to adoption of the use of business simulation were explored and recommendations on how to address the key barriers associated with adoption of business simulations are discussed.

Subjects/Keywords: 020; Business games/simulations; Business simulations; Evaluation; Business simulations market; Business simulations use; Illumimative evaluation; Educational technology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Doonga, N. (2013). The development and implementation of business simulations in higher education in the United Kingdom. (Doctoral Dissertation). Robert Gordon University. Retrieved from http://hdl.handle.net/10059/946

Chicago Manual of Style (16^th Edition):

Doonga, Nitin. “The development and implementation of business simulations in higher education in the United Kingdom.” 2013. Doctoral Dissertation, Robert Gordon University. Accessed February 22, 2020. http://hdl.handle.net/10059/946.

MLA Handbook (7^th Edition):

Doonga, Nitin. “The development and implementation of business simulations in higher education in the United Kingdom.” 2013. Web. 22 Feb 2020.

Vancouver:

Doonga N. The development and implementation of business simulations in higher education in the United Kingdom. [Internet] [Doctoral dissertation]. Robert Gordon University; 2013. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/10059/946.

Council of Science Editors:

Doonga N. The development and implementation of business simulations in higher education in the United Kingdom. [Doctoral Dissertation]. Robert Gordon University; 2013. Available from: http://hdl.handle.net/10059/946

13. Sahali, Mohand Akli. Evaluation des effets des paramètres du tournage : modélisation et optimisation multi-objectifs basées sur des méthodes de soft computing – stratégies et précision.

Degree: 2016, Université M'Hamed Bougara Boumerdès

URL: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2938

►

173 p. : ill. ; 30 cm

La quasi-totalité des travaux, dédiés à l'optimisation des paramètres de coupe en tournage, repose sur des stratégies d’optimisation… (more)

▼

173 p. : ill. ; 30 cm

La quasi-totalité des travaux, dédiés à l'optimisation des paramètres de coupe en tournage, repose sur des stratégies d’optimisation classiques, qui ont toutefois été appliquées efficacement à l'échelle industrielle. Cependant, la robustesse et la fiabilité de ce procédé ont été négligées à tort, car l'existence de quelques facteurs incontrôlables peut altérer la justesse des résultats obtenus et affecter d’écarts risquant de dégrader la qualité des pièces usinées, la productivité et le matériel usinant. Dans un premier temps, nous avons identifié les sources d’incertitudes relatives au procédé de tournage. Puis la quantification et la modélisation des incertitudes ainsi que la maîtrise des mesures de robustesse basée sur différents critères statistiques nous ont permis de développer une approche pour l’optimisation multi-objectifs des paramètres de coupe en nous basant sur une technique d’optimisation innovante de la classe des Soft-Computing, qui a permis de déterminer et de départager les optima performants, robustes et fiables. Nous avons, à cet effet, développé et implémenté sous Matlab™, un algorithme génétique efficient de type Monte Carlo-Genetic Algorithm, intégrant un mécanisme d’évaluation robuste de la fonction « fitness » basée sur les simulations de Monte-Carlo pour le seul calcul de la mesure de robustesse. Cette première approche a été validée, après une application illustrative pour la minimisation du coût et du temps de production sous contraintes des limitations de production liées au système Pièce-Outil-Machine, ayant permis la détermination des résultats performants et robustes, ainsi que leur identification. Cette approche a également montré des limitations concernant la satisfaction des contraintes de production imposées. Dans un deuxième temps, une approche fiabiliste pour l’optimisation multi-objectifs est proposée, introduisant un concept de fiabilité pragmatique basé sur des probabilités de défaillance pour contourner et maîtriser le risque de violation des contraintes d’optimisation stochastiques. Cette deuxième approche est basée sur l’algorithme génétique de tri non dominé probabiliste, dit P-NSGA-II, qui intègre les simulations Monte-Carlo pour un calcul précis aussi bien de la fiabilité, que de la robustesse. L’efficience et l'efficacité de cette approche ont été vérifiées par la résolution de deux problèmes numériques de référence. Les deux cas d’étude traités, qui sont d’une extrême complexité, sont relatifs aux opérations d’ébauche multi-passes et de finition, et se caractérisent par des espaces de recherche, respectivement «clos» et « déformé ». Dans les deux situations explorées, les solutions optimales obtenues par la mise en oeuvre de l'algorithme P-NSGA-II, sont analysées, discutées et comparées avec les résultats obtenus et publiés dans des travaux de recherche de références. En conclusion, cette approche a permis de générer et de départager de façon efficace et précise des solutions performantes, robustes et fiables

Subjects/Keywords: Modélisation; Tournage; Simulations Monte-Carlo

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sahali, M. A. (2016). Evaluation des effets des paramètres du tournage : modélisation et optimisation multi-objectifs basées sur des méthodes de soft computing – stratégies et précision. (Thesis). Université M'Hamed Bougara Boumerdès. Retrieved from http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2938

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sahali, Mohand Akli. “Evaluation des effets des paramètres du tournage : modélisation et optimisation multi-objectifs basées sur des méthodes de soft computing – stratégies et précision.” 2016. Thesis, Université M'Hamed Bougara Boumerdès. Accessed February 22, 2020. http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2938.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sahali, Mohand Akli. “Evaluation des effets des paramètres du tournage : modélisation et optimisation multi-objectifs basées sur des méthodes de soft computing – stratégies et précision.” 2016. Web. 22 Feb 2020.

Vancouver:

Sahali MA. Evaluation des effets des paramètres du tournage : modélisation et optimisation multi-objectifs basées sur des méthodes de soft computing – stratégies et précision. [Internet] [Thesis]. Université M'Hamed Bougara Boumerdès; 2016. [cited 2020 Feb 22]. Available from: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2938.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sahali MA. Evaluation des effets des paramètres du tournage : modélisation et optimisation multi-objectifs basées sur des méthodes de soft computing – stratégies et précision. [Thesis]. Université M'Hamed Bougara Boumerdès; 2016. Available from: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2938

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Victoria

14. Millman, Eamon G. Analyzing MANET jamming strategies.

Degree: MA, 2011, University of Victoria

URL: http://hdl.handle.net/1828/3718

►

Mobile Ad hoc Wireless Networks (MANETs) present a new paradigm in which to realize a variety of communication technologies and services. The use of stochastic… (more)

Subjects/Keywords: wireless networks; simulations; engineering

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Millman, E. G. (2011). Analyzing MANET jamming strategies. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/3718

Chicago Manual of Style (16^th Edition):

Millman, Eamon G. “Analyzing MANET jamming strategies.” 2011. Masters Thesis, University of Victoria. Accessed February 22, 2020. http://hdl.handle.net/1828/3718.

MLA Handbook (7^th Edition):

Millman, Eamon G. “Analyzing MANET jamming strategies.” 2011. Web. 22 Feb 2020.

Vancouver:

Millman EG. Analyzing MANET jamming strategies. [Internet] [Masters thesis]. University of Victoria; 2011. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/1828/3718.

Council of Science Editors:

Millman EG. Analyzing MANET jamming strategies. [Masters Thesis]. University of Victoria; 2011. Available from: http://hdl.handle.net/1828/3718

Laurentian University

15. Mangiardi, Chris. Moleclar-dynamics simulations using spatial decomposition and task-based parallelism .

Degree: 2016, Laurentian University

URL: https://zone.biblio.laurentian.ca/handle/10219/2618

► Molecular Dynamics (MD) simulations are an integral method in the computational studies of materials. This thesis discusses an algorithm for large-scale MD simulations using modern… (more)

Subjects/Keywords: Molecular Dynamics (MD); simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mangiardi, C. (2016). Moleclar-dynamics simulations using spatial decomposition and task-based parallelism . (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/handle/10219/2618

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mangiardi, Chris. “Moleclar-dynamics simulations using spatial decomposition and task-based parallelism .” 2016. Thesis, Laurentian University. Accessed February 22, 2020. https://zone.biblio.laurentian.ca/handle/10219/2618.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mangiardi, Chris. “Moleclar-dynamics simulations using spatial decomposition and task-based parallelism .” 2016. Web. 22 Feb 2020.

Vancouver:

Mangiardi C. Moleclar-dynamics simulations using spatial decomposition and task-based parallelism . [Internet] [Thesis]. Laurentian University; 2016. [cited 2020 Feb 22]. Available from: https://zone.biblio.laurentian.ca/handle/10219/2618.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mangiardi C. Moleclar-dynamics simulations using spatial decomposition and task-based parallelism . [Thesis]. Laurentian University; 2016. Available from: https://zone.biblio.laurentian.ca/handle/10219/2618

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Hawaii – Manoa

16. Yuan, Tiantian. Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3.

Degree: 2016, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/100785

►

Ph.D. University of Hawaii at Manoa 2012.

This thesis conducts the investigation into the metallicity history of galaxies between redshift 1 and 3, using gravitationally… (more)

▼

Ph.D. University of Hawaii at Manoa 2012.

This thesis conducts the investigation into the metallicity history of galaxies between redshift 1 and 3, using gravitationally lensed galaxies. We use metallicity as a tool to understand the formation and evolution history of galaxies. We direct our research in two areas. 1. We combine our new sample of gravitationally lensed galaxies with existing lensed and nonlensed samples to conduct the largest investigation so far into the mass-metallicity (MZ) relation at z > 1. We apply a self-consistent metallicity calibration scheme to investigate the metallicity evolution of star-forming galaxies as a function of redshift. We find that at the median redshift of z = 2.07, the median metallicity of the lensed sample is 0.35 dex lower than the local SDSS starforming galaxies and 0.18 dex lower than the z ∼ 0.8 DEEP2 galaxies. Our lensed sample shows a much larger metallicity range and scatter (> 0.2 dex) than the z ∼ 2 UV selected galaxies at similar masses. These offsets translate into a metallicity evolution of-0.23±0.01 dex per unit redshift from z ∼ 0 → 1, and-0.14 ± 0.08 dex per unit redshift from z ∼ 1 → 3. A more rapid evolution is seen between z ∼ 1 → 3 (with a mean fall in metallicity of-0.05 ± 0.01 dex Gyr−1) than z ∼ 0 → 1 (-0.020 ±0.001 dex Gyr−1). This evolution agrees with the most recent cosmological hydrodynamic simulations with momentum driven winds within the errors. 2. Combining the magnification power of gravitational lensing and AO-aided Integral Field Unit spectrographs (IFUs) is the only way to achieve sufficient signal-to-noise and angular resolution for spatially resolved metallicity studies. Using this technique, we present the first metallicity gradient measurement for a grand-design face-on spiral galaxy at z ∼ 1.5. The gradients of our spiral and another 2 lensed galaxies at z ∼ 2 are much steeper than local disk galaxies, supporting an "inside-out" galaxy formation scenario. We also report spatially resolved emission lines of a z ∼ 1 lensed galaxy. We find significant shock excitation due to galactic outflows. Our analysis suggests that shocked regions may mimic flat or inverted metallicity gradients at high redshift. We find that high angular resolution observations provide the most accurate metallicity gradient measurement,whereas seeing-limited studies under estimate the slope of the gradients

Subjects/Keywords: gravitational lensing; cosmological hydrodynamic simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yuan, T. (2016). Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/100785

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yuan, Tiantian. “Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3.” 2016. Thesis, University of Hawaii – Manoa. Accessed February 22, 2020. http://hdl.handle.net/10125/100785.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yuan, Tiantian. “Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3.” 2016. Web. 22 Feb 2020.

Vancouver:

Yuan T. Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3. [Internet] [Thesis]. University of Hawaii – Manoa; 2016. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/10125/100785.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yuan T. Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3. [Thesis]. University of Hawaii – Manoa; 2016. Available from: http://hdl.handle.net/10125/100785

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

17. Liu, Wanjiao. Advanced simulation and modeling of turbulent sprays.

Degree: PhD, Mechanical Engineering, 2014, University of Minnesota

URL: http://hdl.handle.net/11299/162990

► Sprays have wide applications in agriculture, pharmaceutical synthesis, engines, ink jet printing and so on. The successful spray applications and the control of spray param-… (more)

▼ Sprays have wide applications in agriculture, pharmaceutical synthesis, engines, ink jet printing and so on. The successful spray applications and the control of spray param- eters require a thorough understanding towards the physical mechanisms. Numerical tools have been developed in the past few years for simulating the multiphase turbu- lent flows like sprays. Several researchers have successfully carried out direct numerical simulations (DNS) to investigate the primary breakup in such flows. DNS is accurate but requires extensive computational resources. In comparison, large eddy simulation (LES) is more practical, resolving only the large-scale flow structures and modeling the small-scale effects. The major difficulty with LES of multiphase turbulent flows is the need to model the interfacial subgrid-scale terms. Subgrid surface tension force, for ex- ample, plays an important role in the small droplet formation process. Subgrid surface tension force is, however, a highly non-linear term and can be difficult to model. In this research, we propose a new approach that combines the filtered density function (FDF) approach with the large eddy simulation. The major advantage of FDF is that the non-linear surface tension force appears in a closed form and thus needs no sub- grid modeling. The FDF transport equation is solved conveniently via a Lagrangian Monte-Carlo method. The Lagrangian approach is attractive in that it facilitates the transport of the liquid-gas interface without the diffusive or dispersive errors found in the Eulerian approaches. The surface tension source term in the momentum equation is closed using a Lagrangian volume of fluid (LVOF) approach. We utilize concepts from the smoothed particle hydrodynamics (SPH) in the LVOF approach to obtain the surface tension source term based on the Lagrangian particles. Several modifications have been made towards the original SPH formulation such that it is more suitable for the large-scale, turbulent multiphase flow simulations. Multiple particles are seeded in each Eulerian cell to achieve higher statistical accuracy, while the original SPH seeds one particle in each cell. What's more, a weighted SPH formula for the color function is adopted and is shown to be capable of handling variable particle number density. Performance assessment is via the rotation of Zalesak's disk and an oscillating elliptical droplet. Results show that the modified approach is able to handle the variable particle number density case appropriately. The simulations of multiphase turbulent flows are then performed with the proposed FDF-VOF methodology. At the same time, results from the simulations are compared with the DNS approach for validation and com- parison. Results show that the FDF-LES based approach can be a promising method, in that it models the flow with lower computational cost than DNS, yet maintaining accuracy in a model-free manor.

Subjects/Keywords: CFD; LES; Simulations; Sprays

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Liu, W. (2014). Advanced simulation and modeling of turbulent sprays. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/162990

Chicago Manual of Style (16^th Edition):

Liu, Wanjiao. “Advanced simulation and modeling of turbulent sprays.” 2014. Doctoral Dissertation, University of Minnesota. Accessed February 22, 2020. http://hdl.handle.net/11299/162990.

MLA Handbook (7^th Edition):

Liu, Wanjiao. “Advanced simulation and modeling of turbulent sprays.” 2014. Web. 22 Feb 2020.

Vancouver:

Liu W. Advanced simulation and modeling of turbulent sprays. [Internet] [Doctoral dissertation]. University of Minnesota; 2014. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/11299/162990.

Council of Science Editors:

Liu W. Advanced simulation and modeling of turbulent sprays. [Doctoral Dissertation]. University of Minnesota; 2014. Available from: http://hdl.handle.net/11299/162990

University of Illinois – Urbana-Champaign

18. Raghunathan, Anjan V. Molecular understanding of osmosis and a multiscale framework to investigate confined fluid properties.

Degree: PhD, 0133, 2010, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/15563

► Understanding the fluid structure and behavior in nanoscale confinements is of major importance in a wide variety of applications including biological and engineering devices. A… (more)

▼ Understanding the fluid structure and behavior in nanoscale confinements is of major importance in a wide variety of applications including biological and engineering devices. A critical biological application in which the physics at the nanoscale is important is osmosis. Critical functions of life as well as technology to develop better water filtration systems depends on a fundamental understanding of osmosis. In this thesis, first, a molecular understanding of osmosis in uncharged and charged semi-permeable membranes is developed using Molecular Dynamics (MD) simulation studies. Specifically, we identify key inter-molecular forces that initiate osmosis in uncharged and charged membranes and explain the significance of various inter-molecular forces as the system evolves to a steady-state. We also investigate the effect of size-asymmetric electrolytes on osmosis through uncharged semi-permeable membranes. Second, we develop a multiscale framework to investigate fluids in confinement. Since the atomistic simulations are extremely computational, they become intractable at very large length scales. Also, the classical continuum theory breaks down at the atomistic level. Towards the goals of bridging the two scales, we formulate a semi-classical framework to predict the concentration and potential profiles of LJ fluids confined in channels of widths ranging from 2 sigma to 100 sigma (sigma is the fluid-fluid LJ parameter). The semi-classical framework utilizes the Nernst-Planck equation coupled with a theoretical potential formulation to obtain the accurate concentration and potential profiles in a channel. The results obtained from the semi-classical framework are then compared with results obtained from MD simulations in the channel. Advisors/Committee Members: Aluru, Narayana R. (advisor), Aluru, Narayana R. (Committee Chair), Georgiadis, John G. (committee member), Ravaioli, Umberto (committee member), Tajkhorshid, Emad (committee member).

Subjects/Keywords: Multiscale simulations; Nanofluidics; Osmosis

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Raghunathan, A. V. (2010). Molecular understanding of osmosis and a multiscale framework to investigate confined fluid properties. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/15563

Chicago Manual of Style (16^th Edition):

Raghunathan, Anjan V. “Molecular understanding of osmosis and a multiscale framework to investigate confined fluid properties.” 2010. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed February 22, 2020. http://hdl.handle.net/2142/15563.

MLA Handbook (7^th Edition):

Raghunathan, Anjan V. “Molecular understanding of osmosis and a multiscale framework to investigate confined fluid properties.” 2010. Web. 22 Feb 2020.

Vancouver:

Raghunathan AV. Molecular understanding of osmosis and a multiscale framework to investigate confined fluid properties. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2010. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/2142/15563.

Council of Science Editors:

Raghunathan AV. Molecular understanding of osmosis and a multiscale framework to investigate confined fluid properties. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2010. Available from: http://hdl.handle.net/2142/15563

University of Southern California

19. Yogananda, Spurthy. Green-roof design decision support: climate specific green roof design recommendations.

Degree: Master of Building Science, Building Science, 2017, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/633471/rec/3095

► In spite of many design and technical efforts to improve building performance using green roofs as building enclosure components, the critical uncertainty of existing mechanisms,… (more)

Subjects/Keywords: Green roof; simulations; EUI

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yogananda, S. (2017). Green-roof design decision support: climate specific green roof design recommendations. (Masters Thesis). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/633471/rec/3095

Chicago Manual of Style (16^th Edition):

Yogananda, Spurthy. “Green-roof design decision support: climate specific green roof design recommendations.” 2017. Masters Thesis, University of Southern California. Accessed February 22, 2020. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/633471/rec/3095.

MLA Handbook (7^th Edition):

Yogananda, Spurthy. “Green-roof design decision support: climate specific green roof design recommendations.” 2017. Web. 22 Feb 2020.

Vancouver:

Yogananda S. Green-roof design decision support: climate specific green roof design recommendations. [Internet] [Masters thesis]. University of Southern California; 2017. [cited 2020 Feb 22]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/633471/rec/3095.

Council of Science Editors:

Yogananda S. Green-roof design decision support: climate specific green roof design recommendations. [Masters Thesis]. University of Southern California; 2017. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/633471/rec/3095

University of Kansas

20. Sukumaran, Jeet. Geographies and Genealogies: Phylogeographic Simulation and Bayesian Approaches to Statistical Phylogeographic Model Selection.

Degree: PhD, Ecology & Evolutionary Biology, 2012, University of Kansas

URL: http://hdl.handle.net/1808/10314

► A wide class of biogeographic or phylogeographic studies predicts the simultaneous divergence of co-distributed taxa. Typically, a geological event, or a climate-related change in geography,… (more)

▼ A wide class of biogeographic or phylogeographic studies predicts the simultaneous divergence of co-distributed taxa. Typically, a geological event, or a climate-related change in geography, is hypothesized to have structured a broad range of biota, many components of which may only be distantly related to each other. Direct assessment of these predictions is precluded in many studies by the lack or paucity of appropriate fossils for calibration when estimating divergence times in a phylogenetic context. However, even without direct divergence time estimation of all the relevant splits, there might be sufficient information in the data to estimate the probability that these groups diverged simultaneously if the datasets are treated in a parallel, coordinated, and integrated fashion, rather than independently. This study investigates the statistical framework and methods used to address this issue. Most current statistical phylogeographic methods rely on the coalescent as an underlying model. While the coalescent is robust to a range of violations of some of its assumptions, such as the Wright- Fisher demographic model, and, morever, has been elaborated or extended to allow the relaxing of some of its other assumptions, little has been done to assess and quanitfy how violations of these assumptions affect phylogeographic analysis in general, and phylogeographic model selection in particular. One of the major problems in evaluating the performance of phylogeographic methods with respect to their responses or behavior when the assumptions of the coalescent are violated is the lack of a rich or flexible non-coalesccent based spatially-explicit simulation engine. The first chapter of my dissertation is thus focussed on developing and producing such a simulator: a forward-time, agent-based, spatially-explicit simulation program that generates genealogies for multiple loci evolving in populations of multiple sexual diploid species on a spatio-temporally environmentally-heterogenous landscape. The second chapter of the dissertation assesses the performance of an Approximate Bayesian Computation approach to simultaneous divergence time testing model selection. It profiles the performance this approach under a variety of conditions, ranging from ones in which its model assumptions are completely met, to ones in which they are selectively violated in varying degrees. While there currently are no full- or exact-likelihood methods that address this question, under the special controlled circumstances of the study it was possible to adapt an existing program to provide some indication of how a full-likehood method may work in contrast. The third chapter of this work presents a program that simultaneously estimates the divergence time between sister populations of multiple species in parallel. This program uses a Bayesian statistical framework to analyze data from multiple genetic loci, integrating over uncertainty in gene trees, divergence times, and demographic parameters. If limited to two species, the program allows for… Advisors/Committee Members: Holder, Mark T (advisor), Brown, Rafe M (advisor), Kelly, John K (cmtemember), Peterson, Andrew T (cmtemember), Li, Xingong (cmtemember), Soberon, Jorge (cmtemember).

Subjects/Keywords: Biology; Bioinformatics; Bayesian; Phylogeography; Simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sukumaran, J. (2012). Geographies and Genealogies: Phylogeographic Simulation and Bayesian Approaches to Statistical Phylogeographic Model Selection. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/10314

Chicago Manual of Style (16^th Edition):

Sukumaran, Jeet. “Geographies and Genealogies: Phylogeographic Simulation and Bayesian Approaches to Statistical Phylogeographic Model Selection.” 2012. Doctoral Dissertation, University of Kansas. Accessed February 22, 2020. http://hdl.handle.net/1808/10314.

MLA Handbook (7^th Edition):

Sukumaran, Jeet. “Geographies and Genealogies: Phylogeographic Simulation and Bayesian Approaches to Statistical Phylogeographic Model Selection.” 2012. Web. 22 Feb 2020.

Vancouver:

Sukumaran J. Geographies and Genealogies: Phylogeographic Simulation and Bayesian Approaches to Statistical Phylogeographic Model Selection. [Internet] [Doctoral dissertation]. University of Kansas; 2012. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/1808/10314.

Council of Science Editors:

Sukumaran J. Geographies and Genealogies: Phylogeographic Simulation and Bayesian Approaches to Statistical Phylogeographic Model Selection. [Doctoral Dissertation]. University of Kansas; 2012. Available from: http://hdl.handle.net/1808/10314

Brunel University

21. Sanna, Antonio. Numerical investigation of saturated flow boiling on thin walls.

Degree: 2010, Brunel University

URL: http://bura.brunel.ac.uk/handle/2438/4615 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529057

► Boiling heat transfer provides a means of removing high heat fluxes at low temperature differences in many applications in the power and process industries. A… (more)

Subjects/Keywords: 621.4022; Nucleate; Silicon; Boiling; Simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sanna, A. (2010). Numerical investigation of saturated flow boiling on thin walls. (Doctoral Dissertation). Brunel University. Retrieved from http://bura.brunel.ac.uk/handle/2438/4615 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529057

Chicago Manual of Style (16^th Edition):

Sanna, Antonio. “Numerical investigation of saturated flow boiling on thin walls.” 2010. Doctoral Dissertation, Brunel University. Accessed February 22, 2020. http://bura.brunel.ac.uk/handle/2438/4615 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529057.

MLA Handbook (7^th Edition):

Sanna, Antonio. “Numerical investigation of saturated flow boiling on thin walls.” 2010. Web. 22 Feb 2020.

Vancouver:

Sanna A. Numerical investigation of saturated flow boiling on thin walls. [Internet] [Doctoral dissertation]. Brunel University; 2010. [cited 2020 Feb 22]. Available from: http://bura.brunel.ac.uk/handle/2438/4615 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529057.

Council of Science Editors:

Sanna A. Numerical investigation of saturated flow boiling on thin walls. [Doctoral Dissertation]. Brunel University; 2010. Available from: http://bura.brunel.ac.uk/handle/2438/4615 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529057

Université de Montréal

22. Perez, Danny. Étude des mécanismes d'ablation laser par impulsions ultra-courtes à l'aide de la dynamique moléculaire .

Degree: 2003, Université de Montréal

URL: http://hdl.handle.net/1866/14744

Subjects/Keywords: Simulations numériques

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Perez, D. (2003). Étude des mécanismes d'ablation laser par impulsions ultra-courtes à l'aide de la dynamique moléculaire . (Thesis). Université de Montréal. Retrieved from http://hdl.handle.net/1866/14744

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Perez, Danny. “Étude des mécanismes d'ablation laser par impulsions ultra-courtes à l'aide de la dynamique moléculaire .” 2003. Thesis, Université de Montréal. Accessed February 22, 2020. http://hdl.handle.net/1866/14744.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Perez, Danny. “Étude des mécanismes d'ablation laser par impulsions ultra-courtes à l'aide de la dynamique moléculaire .” 2003. Web. 22 Feb 2020.

Vancouver:

Perez D. Étude des mécanismes d'ablation laser par impulsions ultra-courtes à l'aide de la dynamique moléculaire . [Internet] [Thesis]. Université de Montréal; 2003. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/1866/14744.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Perez D. Étude des mécanismes d'ablation laser par impulsions ultra-courtes à l'aide de la dynamique moléculaire . [Thesis]. Université de Montréal; 2003. Available from: http://hdl.handle.net/1866/14744

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Ohio University

23. Lusk, Gregory S. Models and Scientific Explanation .

Degree: MA, Philosophy (Arts and Sciences), 2009, Ohio University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250816101

► In recent years, there has been an increased focus on the use of models in science. However, little research has been conducted on the role… (more)

Subjects/Keywords: Philosophy; models; simulations; science; Bohr

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lusk, G. S. (2009). Models and Scientific Explanation . (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250816101

Chicago Manual of Style (16^th Edition):

Lusk, Gregory S. “Models and Scientific Explanation .” 2009. Masters Thesis, Ohio University. Accessed February 22, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250816101.

MLA Handbook (7^th Edition):

Lusk, Gregory S. “Models and Scientific Explanation .” 2009. Web. 22 Feb 2020.

Vancouver:

Lusk GS. Models and Scientific Explanation . [Internet] [Masters thesis]. Ohio University; 2009. [cited 2020 Feb 22]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250816101.

Council of Science Editors:

Lusk GS. Models and Scientific Explanation . [Masters Thesis]. Ohio University; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250816101

24. Taylor, Philip. Cosmological Simulations with AGN Feedback .

Degree: 2016, University of Hertfordshire

URL: http://hdl.handle.net/2299/16573

► We implement a model for, and study the effects of, AGN feedback in cosmological hydrodynamical simulations. In our model, black holes form high-density, primordial gas,… (more)

▼ We implement a model for, and study the effects of, AGN feedback in cosmological hydrodynamical simulations. In our model, black holes form high-density, primordial gas, to imitate the likely channels of black hole formation in the early Universe. We find that a black hole seed mass of 102???3h???1M??? is required to produce simulations that match the cosmic star formation rate density, and present-day black hole mass ??? velocity dispersion and galaxy size ??? velocity dispersion relations. We therefore suggest that Population iii stars can be the progenitors of the super-massive black holes seen today. Using our fiducial model, we run two large simulations ((25h???1 Mpc)3), one with and one without AGN feedback. With these, we follow the population of galaxies that forms across cosmic time, and find that the inclusion of AGN feedback improves the agreement of simulated and observed galaxy properties, such as the mass and luminosity functions. This agreement is best at z = 0, and fairly good out to z = 2???3. Evidence for downsizing in the evolution of galaxies is found, both in the present-day colour???magnitude and [??/Fe]???velocity dispersion relations, and by the fact that high-mass galaxies attain their present-day metallicity earlier and faster than do low-mass ones. With our hydrodynamical simulations, we can also investigate the internal structure of galaxies, and look at the effects of galaxy mergers and AGN feedback on the stellar and gas-phase metallicity gradients of galaxies. Stellar metallicity gradients are found to be sensitive to galaxy mergers, while gas-phase metallicity gradients are more affected by AGN activity. This suggests that simultaneous measurements of these two quantities can help disentangle the actions of mergers and AGN feedback on a galaxy???s history. Finally, we develop a new method to identify massive AGN-driven outflows from the most massive simulated galaxy. These events cause the intra-cluster medium to be hotter and more chemically enriched compared to the simulation without AGN feedback, and therefore AGN feedback may be required in order to attain the metallicities observed in clusters.

Subjects/Keywords: black holes; AGN; numerical simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Taylor, P. (2016). Cosmological Simulations with AGN Feedback . (Thesis). University of Hertfordshire. Retrieved from http://hdl.handle.net/2299/16573

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Taylor, Philip. “Cosmological Simulations with AGN Feedback .” 2016. Thesis, University of Hertfordshire. Accessed February 22, 2020. http://hdl.handle.net/2299/16573.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Taylor, Philip. “Cosmological Simulations with AGN Feedback .” 2016. Web. 22 Feb 2020.

Vancouver:

Taylor P. Cosmological Simulations with AGN Feedback . [Internet] [Thesis]. University of Hertfordshire; 2016. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/2299/16573.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Taylor P. Cosmological Simulations with AGN Feedback . [Thesis]. University of Hertfordshire; 2016. Available from: http://hdl.handle.net/2299/16573

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Louisiana State University

25. Elmajdoub, Nada. Simulations of a modified micro-scale electrophoretron.

Degree: MS, Mechanical Engineering, 2006, Louisiana State University

URL: etd-11132006-211541 ; https://digitalcommons.lsu.edu/gradschool_theses/1266

► This paper presents theoretical analysis and numerical simulations of a modified micro-scale electrophoretron adapted for cycling reaction applications (PCR, LDR...). The electrophoretron consists of a… (more)

Subjects/Keywords: electrophoretron; simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Elmajdoub, N. (2006). Simulations of a modified micro-scale electrophoretron. (Masters Thesis). Louisiana State University. Retrieved from etd-11132006-211541 ; https://digitalcommons.lsu.edu/gradschool_theses/1266

Chicago Manual of Style (16^th Edition):

Elmajdoub, Nada. “Simulations of a modified micro-scale electrophoretron.” 2006. Masters Thesis, Louisiana State University. Accessed February 22, 2020. etd-11132006-211541 ; https://digitalcommons.lsu.edu/gradschool_theses/1266.

MLA Handbook (7^th Edition):

Elmajdoub, Nada. “Simulations of a modified micro-scale electrophoretron.” 2006. Web. 22 Feb 2020.

Vancouver:

Elmajdoub N. Simulations of a modified micro-scale electrophoretron. [Internet] [Masters thesis]. Louisiana State University; 2006. [cited 2020 Feb 22]. Available from: etd-11132006-211541 ; https://digitalcommons.lsu.edu/gradschool_theses/1266.

Council of Science Editors:

Elmajdoub N. Simulations of a modified micro-scale electrophoretron. [Masters Thesis]. Louisiana State University; 2006. Available from: etd-11132006-211541 ; https://digitalcommons.lsu.edu/gradschool_theses/1266

26. Predari, Maria. Load balancing for parallel coupled simulations : Equilibrage de la charge des simulations parallèles couplées.

Degree: Docteur es, Informatique, 2016, Bordeaux

URL: http://www.theses.fr/2016BORD0369

►

Dans le contexte du calcul scientique, l'équilibrage de la charge est un problème crucial qui conditionne la performance des simulations numériques parallèles. L'objectif est de… (more)

▼

Dans le contexte du calcul scientique, l'équilibrage de la charge est un problème crucial qui conditionne la performance des simulations numériques parallèles. L'objectif est de répartir la charge de travail entre un nombre de processeurs donné, afin de minimiser le temps global d'exécution. Une stratégie populaire pour résoudre ce problème consiste à modéliser la simulation à l'aide d'un graphe et à appliquer des algorithmes de partitionnement. En outre, les simulations numériques tendent à se complexifier, notamment en mixant plusieurs codes représentant des physiques différentes ou des échelles différentes. On parle alors de couplage de codes multi-physiques ou multi-échelles. Dans ce contexte, le problème de l'équilibrage de charge devient également plus difficile, car il ne s'agit plus d'équilibrer chacun des codes séparément, mais l'ensemble de ces codes pris dans leur globalité. Dans ce travail, on propose de resoudre ce problème en utilisant le modèle de partitionnement à sommets fixes qui pourrait représenter efficacement les contraintes supplémentaires imposées par les codes couplés (co-partitionnement). Nous avons donc développé un algorithme direct de partitionnement de graphe qui gère des sommets fixes. L'algorithme a été implémenté dans le partitionneur Scotch et une série d'expériences ont été menées sur la collection des graphes DIMACS. Ensuite nous avons proposé trois algorithmes de co-partitionnement qui respectent les contraintes issues des codes couplés respectifs. Nous avons egalement validé nos algorithmes par une étude expérimentale en comparant nos méthodes aux strategies actuelles sur des cas artificiels ainsi que sur des codes réels couplés.

Load balancing is an important step conditioning the performance of parallel applications. The goal is to distribute roughly equal amounts of computational load across a number of processors, while minimising interprocessor communication. A common approach to model the problem is based on graph structures and graph partitioning algorithms. Moreover, new challenges involve the simulation of more complex physical phenomena, where different parts of the computational domain exhibit different physical behavior. Such simulations follow the paradigm of multi-physics or multi-scale modeling approaches. Combining such different models in massively parallel computations is still a challenge to reach high performance. Additionally, traditional load balancing algorithms are often inadequate, and more sophisticated solutions should be explored. In this thesis, we propose new graph partitioning algorithms that balance the load of such simulations, refered to as co-partitioning. We formulate this problem with the use of graph partitioning with initially fixed vertices which we believe represents efficiently the additional constraints of coupled simulations. We have therefore developed a direct algorithm for graph partitioning that manages successfully problems with fixed vertices. The algorithm is implemented inside Scotch partitioner and a series of experiments…

Advisors/Committee Members: Roman, Jean (thesis director).

Subjects/Keywords: Simulations numériques; Simulations couplées; Parallélisme; Equilibrage de charge; Partitionnement de graphe; Numerical simulations; Coupled simulations; Parallelism; Load balancing; Graph partitioning

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Predari, M. (2016). Load balancing for parallel coupled simulations : Equilibrage de la charge des simulations parallèles couplées. (Doctoral Dissertation). Bordeaux. Retrieved from http://www.theses.fr/2016BORD0369

Chicago Manual of Style (16^th Edition):

Predari, Maria. “Load balancing for parallel coupled simulations : Equilibrage de la charge des simulations parallèles couplées.” 2016. Doctoral Dissertation, Bordeaux. Accessed February 22, 2020. http://www.theses.fr/2016BORD0369.

MLA Handbook (7^th Edition):

Predari, Maria. “Load balancing for parallel coupled simulations : Equilibrage de la charge des simulations parallèles couplées.” 2016. Web. 22 Feb 2020.

Vancouver:

Predari M. Load balancing for parallel coupled simulations : Equilibrage de la charge des simulations parallèles couplées. [Internet] [Doctoral dissertation]. Bordeaux; 2016. [cited 2020 Feb 22]. Available from: http://www.theses.fr/2016BORD0369.

Council of Science Editors:

Predari M. Load balancing for parallel coupled simulations : Equilibrage de la charge des simulations parallèles couplées. [Doctoral Dissertation]. Bordeaux; 2016. Available from: http://www.theses.fr/2016BORD0369

University of Manchester

27. Gendron, Rieul. The Frequency of Extrasolar Planet Detections with Microlensing Simulations.

Degree: 2011, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:120394

► To date, over 500 extrasolar planets have been discovered. The microlensing planets, although relatively few in number, probe a region of the planet mass versus… (more)

▼ To date, over 500 extrasolar planets have been discovered. The microlensing planets, although relatively few in number, probe a region of the planet mass versus semi-major axis plane that is currently out of reach of the other methods, with the sensitivity peaking just beyond ∼ 1 AU. Microlensing planets are therefore very useful for placing constraints on planet formation models.We simulate light curves for 1000 extrasolar planet systems around host stars of mass 0.25\,\,{{M}}_\odot, drawn from the Ida \& Lin core accretion models of planet formation, to determine the frequency of single and multiple planet perturbations. The simulated data is first fitted with a single-lens model. If the fit is poor, combinations of the planets most likely to be causing perturbations are placed around the star and new light curves are generated to attempt to reproduce the original light curve. It was found that the majority of the light curves were well-fitted by single-lens models, corresponding to the absence of planetary signals. However, 26 were determined to contain pertubations due to at least one planet. Of the 26 interesting light curves, it was found that 16 could be explained by the presence of a single planet. A greater number of planets were necessary to explain the remaining 10 cases. The fraction of planetary events to all microlensing events was found to be 0.026^+0.006_-0.005, while the fraction of multiple-planet events to planetary events was 0.38^+0.10_-0.09, increasing to 0.50^+0.17_-0.17 when only the relatively high-magnification events (those with impact parameter <0.05) were considered. Although we can be confident that the single-planet events would correspond to single-planet detections, some (or all) of the multiple-planet events might be degenerate with single-planet cases (or more generally systems possessing a fewer number of planets). Hence, the latter fraction is an upper limit on the ratio of multiple-planet {\emph{detections}} to planetary events. Advisors/Committee Members: Mao, Shude.

Subjects/Keywords: extrasolar planets; microlensing; simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gendron, R. (2011). The Frequency of Extrasolar Planet Detections with Microlensing Simulations. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:120394

Chicago Manual of Style (16^th Edition):

Gendron, Rieul. “The Frequency of Extrasolar Planet Detections with Microlensing Simulations.” 2011. Doctoral Dissertation, University of Manchester. Accessed February 22, 2020. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:120394.

MLA Handbook (7^th Edition):

Gendron, Rieul. “The Frequency of Extrasolar Planet Detections with Microlensing Simulations.” 2011. Web. 22 Feb 2020.

Vancouver:

Gendron R. The Frequency of Extrasolar Planet Detections with Microlensing Simulations. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2020 Feb 22]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:120394.

Council of Science Editors:

Gendron R. The Frequency of Extrasolar Planet Detections with Microlensing Simulations. [Doctoral Dissertation]. University of Manchester; 2011. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:120394

McMaster University

28. Woods, Rory. A New Approach to Radiative Transfer in Galaxies.

Degree: PhD, 2015, McMaster University

URL: http://hdl.handle.net/11375/18234

►

In this thesis, we present a novel algorithm for computing the radiation field in astrophysical simulations. The algorithm is tree-based, similar to many gravity solvers,… (more)

▼

In this thesis, we present a novel algorithm for computing the radiation field in astrophysical simulations. The algorithm is tree-based, similar to many gravity solvers, and allows computation of radiative transfer in O(Nsink logNsource) in cases without absorption, and O(Nsink logNsource logN) time with absorption. The algorithm scales well with the number of processors due to its tree-based nature, and is highly tunable in accuracy and speed. It is also only weakly dependent on both the energy band and the number of energy bands used. We provide a suite of tests of the code showing its ability to create accurate fluxes, ionization fronts, hydrodynamics coupling, and shadowing. We apply the algorithm in a set of simulations on an isolated spiral galaxy from the AGORA project. The algorithm is used to calculate FUV fields within the galaxy, which self-consistently sets the dominant photoelectric heating in the gas. This has never before been performed in galaxy simulations. We find, in agreement with Ostriker et al. [2010], that FUV can be a very important regulation mechanism for star formation in a galaxy. Depending on the assumed opacity, FUV can decrease the average star formation rate (SFR) anywhere from 15% to a factor of twenty. We compare this regulation mechanism to a highly effective model of supernovae (SNe) feedback, which reduces the SFR by a factor of twenty as well. However, SNe feedback destroys most of the gas structure in the process, whereas FUV has minimal impact on the gas structure. In the simulations with FUV radiation, we are also able to create a two phase medium that is a function of the mean FUV intensity the gas receives. Finally, we find that simulations with FUV agree well with observations of nearby spirals on the Kennicutt-Schmidt relation, at least at gas surface densities of 0.2 - 30 M⊙. At surface densities higher than 30 M⊙, we find that FUV is not an effective regulator which is consistent with arguments that SNe or other feedback mechanisms should become the primary regulator.

Thesis

Doctor of Philosophy (PhD)

Advisors/Committee Members: Wadsley, James, Couchman, Hugh, Physics and Astronomy.

Subjects/Keywords: methods:numerical; methods:radiation; simulations: galaxy

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Woods, R. (2015). A New Approach to Radiative Transfer in Galaxies. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/18234

Chicago Manual of Style (16^th Edition):

Woods, Rory. “A New Approach to Radiative Transfer in Galaxies.” 2015. Doctoral Dissertation, McMaster University. Accessed February 22, 2020. http://hdl.handle.net/11375/18234.

MLA Handbook (7^th Edition):

Woods, Rory. “A New Approach to Radiative Transfer in Galaxies.” 2015. Web. 22 Feb 2020.

Vancouver:

Woods R. A New Approach to Radiative Transfer in Galaxies. [Internet] [Doctoral dissertation]. McMaster University; 2015. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/11375/18234.

Council of Science Editors:

Woods R. A New Approach to Radiative Transfer in Galaxies. [Doctoral Dissertation]. McMaster University; 2015. Available from: http://hdl.handle.net/11375/18234

University of Oxford

29. Pongprayoon, Prapasiri. Molecular modelling of β-barrel outer membrane proteins.

Degree: PhD, 2010, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:0ed0c22f-027e-4be1-a64c-0819888bbebc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526518

► In Gram-negative bacteria, the Outer membrane (OM) acts as a first barrier to screen unwanted compounds whilst enabling ions and very small solutes to diffuse… (more)

▼ In Gram-negative bacteria, the Outer membrane (OM) acts as a first barrier to screen unwanted compounds whilst enabling ions and very small solutes to diffuse into the cell. Most of nutrients and essential ions are effectively transported across a membrane via the outer membrane proteins (OMPs). The water-filled β- barrel OMPs are called porins. These pores are classified into two groups, non- specific and substrate-specific porins. Each of them has different mechanisms to facilitate its substrate translocation. To reveal the process of substrate permeation and selectivity in microscopic detail, molecular dynamics (MD) simulations and applications were performed in this thesis. The studies in this thesis focus on a series of classical porins. These proteins share similar feature where extracellular loop(s) (generally loop 3 (L3)) is folded into the middle of the pore and act as a constriction site which is important for substrate specificity and selectivity. The studies firstly concentrate on the structural properties and dynamics of the general trimeric porins, OmpC and OmpF whose sequences share 60% identity. OmpC and OmpF are found to have similar mechanism of latching loop (L2) to maintain trimeric stability. The smaller pore size allows OmpC to be more cation-selective than OmpF. Additionally, the major driving force for cation permeation in both porins is not from electrostatic properties. This differs from the phosphate-selective porin, trimeric OprP, where a phosphate diffusion depends on electrostatic interactions with positively charged pore-lining residues. The charge brush-like behavior of interior Arg and Lys residues plays a major role in phosphate selectivity. Also, the free energy profiles (PMF) reveal two key regions that are important for differentiating phosphate from other anions. The brush-like mechanism of OprP were also implanted to the simplified model pores in order to determine the possibility of transferring phosphate-selective properties of OprP to a model which may be useful for future design of nanopores. It is found that the duplication of functional residues and pore cavity can turn a model into the highly phosphate-selective pore. Importantly, the phosphate-binding affinity is dependent on the ability of the pore to interfere and occupy the hydration shell of a translocating phosphate where such ability can be maximized by an increase in sidechain flexibility. In case of uptake of more complex substrates, OpdK also employs a constriction site to select its substrate, aromatic vanillate (VNL) with total charge of -1. Unlike ion-specific porins, the free VNL is attracted by polar and aromatic interactions and sequentially directed through the periplasmic vestibule by charged residues insides the pore. The correct orientation of VNL on arrival is crucial for OpdK to recognize and enable the permeation process.

Subjects/Keywords: 572; Biochemistry; computer simulations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pongprayoon, P. (2010). Molecular modelling of β-barrel outer membrane proteins. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:0ed0c22f-027e-4be1-a64c-0819888bbebc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526518

Chicago Manual of Style (16^th Edition):

Pongprayoon, Prapasiri. “Molecular modelling of β-barrel outer membrane proteins.” 2010. Doctoral Dissertation, University of Oxford. Accessed February 22, 2020. http://ora.ox.ac.uk/objects/uuid:0ed0c22f-027e-4be1-a64c-0819888bbebc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526518.

MLA Handbook (7^th Edition):

Pongprayoon, Prapasiri. “Molecular modelling of β-barrel outer membrane proteins.” 2010. Web. 22 Feb 2020.

Vancouver:

Pongprayoon P. Molecular modelling of β-barrel outer membrane proteins. [Internet] [Doctoral dissertation]. University of Oxford; 2010. [cited 2020 Feb 22]. Available from: http://ora.ox.ac.uk/objects/uuid:0ed0c22f-027e-4be1-a64c-0819888bbebc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526518.

Council of Science Editors:

Pongprayoon P. Molecular modelling of β-barrel outer membrane proteins. [Doctoral Dissertation]. University of Oxford; 2010. Available from: http://ora.ox.ac.uk/objects/uuid:0ed0c22f-027e-4be1-a64c-0819888bbebc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526518

McMaster University

30. Rucska, Josef J. Numerical investigations of the early stages of planet formation.

Degree: MSc, 2018, McMaster University

URL: http://hdl.handle.net/11375/24281

►

Dust grains are a crucial component of disks around young stellar systems where current observations and theory show that planets form. Dust grains must grow… (more)

Subjects/Keywords: planets; formation; numerical simulations; instability

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rucska, J. J. (2018). Numerical investigations of the early stages of planet formation. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/24281

Chicago Manual of Style (16^th Edition):

Rucska, Josef J. “Numerical investigations of the early stages of planet formation.” 2018. Masters Thesis, McMaster University. Accessed February 22, 2020. http://hdl.handle.net/11375/24281.

MLA Handbook (7^th Edition):

Rucska, Josef J. “Numerical investigations of the early stages of planet formation.” 2018. Web. 22 Feb 2020.

Vancouver:

Rucska JJ. Numerical investigations of the early stages of planet formation. [Internet] [Masters thesis]. McMaster University; 2018. [cited 2020 Feb 22]. Available from: http://hdl.handle.net/11375/24281.

Council of Science Editors:

Rucska JJ. Numerical investigations of the early stages of planet formation. [Masters Thesis]. McMaster University; 2018. Available from: http://hdl.handle.net/11375/24281

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations