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Dissertations / Theses on the topic 'Cold model of the Universe'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Jain, Piyush. "Topics in ultra-cold Bose gases : the Bose-Hubbard model : analogue models for an expanding universe and for an acoustic black hole : a thesis submitted to the Victoria University of Wellington in partial fulfillment of the requirements for the degree of Doctor of Philosophy [in Physics] /." ResearchArchive@Victoria e-Thesis, 2007. http://hdl.handle.net/10063/144.

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2

Groom, W. "The formation and evolution of galaxies in a cold dark matter universe." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599748.

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The field of galaxy formation is as rich and diverse as the many disciplines encompassed by it. A comprehensive theory must encapsulate structure formation and evolution on scales as small as stars, whilst simultaneously illustrating the natural occurrence of the physical conditions required, from the cosmological perspective. Whilst current analytical techniques have been highly successful in quantifying the bulk properties of a galaxy population evolving within some cosmological scenario, to trace the detailed evolution of individual objects requires the use of numerical codes. This thesis r

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3

Van, Dijk Deanna. "A supply-limited model for cold-aeolian activity." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0025/NQ30655.pdf.

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4

Milde, Lucy(Lucy E. ). "Model of reflectance of thermophotovoltaic cell and cold plate." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127903.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 22-23).<br>The reflectivity of a gold-plated cold plate, and mounted multi-junction photovoltaic cells, is studied in the context of a thermal energy grid storage system. The emitter is modeled as a black body emitter. Improving the efficiency of the system requires high reflectance below the bandgap energy of the cells, and high absorption above the bandgap. The matrix transfer method is used to predict

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5

Sastry, Ghatty S. S. R. K. "Cold Model Study Of Formation And Breaking Of Raceway." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/185.

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The raceway in the ironmaking blast furnace is a void in front of the hot blast tuyeres where coke and supplementary fuel burn to supply heat to the ironmaking process. The air velocity through the tuyeres is high (around 200 m/s) and this causes the coke particles to circulate in a rotating flow field inside the raceway. The size and shape of the raceway determine the gas flow dstribution, the reactions that occur, and the temperature profiles in the lower part of the blast furnace. It is for these reasons that the raceway has been extensively researched in the past. . Literature review re

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6

Sastry, Ghatty S. S. R. K. "Cold Model Study Of Formation And Breaking Of Raceway." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/185.

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The raceway in the ironmaking blast furnace is a void in front of the hot blast tuyeres where coke and supplementary fuel burn to supply heat to the ironmaking process. The air velocity through the tuyeres is high (around 200 m/s) and this causes the coke particles to circulate in a rotating flow field inside the raceway. The size and shape of the raceway determine the gas flow dstribution, the reactions that occur, and the temperature profiles in the lower part of the blast furnace. It is for these reasons that the raceway has been extensively researched in the past. . Literature review reve

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7

Elmahalawy, Yasser Reda Ahmed Abdelhamid. "Ricci Time in Lemaître-Tolman Model and Block Universe." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13373.

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Includes bibliographical references.<br>It is common to think of our universe according to the "block universe" idea, which says that spacetime consists of many "stacked" 3-surfaces varied as a function of some kind of proper time Ƭ. Standard ideas do not distinguish past and future, but Ellis' "evolving block universe" tries to make a fundamental distinction. One proposal for this proper time is the proper time measured along the timelike Ricci eigenlines, starting from the big bang. The main idea of this work is to investigate the shape of the {Ƭ=constant} surfaces relative to the

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8

Pfeifer, Susanne. "Modeling cold cloud processes with the regional climate model REMO /." Hamburg : Max-Planck-Inst. für Meteorologie, 2006. http://edoc.mpg.de/get.epl?fid=18331&did=261718&ver=0.

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9

Tjøstheim, Sindre. "Chemical Looping Combustion Cold Flow Model commissioning and performance evaluation." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11059.

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SINTEF and NTNU are planning to build a 150 kWth Chemical Looping Combustion (CLC) reactor system. This is new technology and the CLC reactor system is going to be one of the largest of its kind in the world. The technology is promising for CO2 capture in terms of energy efficiency and economics. To verify the design a Cold Flow Model, CFM, has been built. In the CFM no reactions take place, but it simulates the hydrodynamics of the 150 kWth CLC reactor system. The reactor system consists of two reactors exchanging solids in a loop. The two reactors are one air reactor, AR, and one fuel reacto

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10

Baumann, Jochen Peter. "Early universe cosmology in supersymmetric extensions of the standard model." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-143230.

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11

Cora, Omer Necati. "Friction Analysis In Cold Forging." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605674/index.pdf.

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Friction is one of the important parameters in metal forming processes since it affects metal flow in the die, forming load, strain distribution, tool and die life, surface quality of the product etc. The range of coefficient of friction in different metal forming applications is not well known and the factors affecting variation are ambiguous. Commercially available FEA packages input the coefficient of friction as constant among the whole process which is not a realistic approach. In this study, utility of user-subroutines is integrated into MSC SuperForm v.2004 and MSC Marc v.2003 FEA pac

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12

Huber, Michael R. "A boundary-layer model of thermocapillary flow in a cold corner." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA379665.

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Dissertation (Ph.D. in Applied Mathematics)--Naval Postgraduate School, June 2000.<br>Dissertation supervisor(s): Canright, David. "June 2000." Includes bibliographical references (p. 113-115). Also available online.

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13

Coulombe, Sylvain. "A model of the electric arc attachment on nonrefractory (cold) cathodes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ44393.pdf.

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14

Xu, Min. "Chemical looping combustion : cold model hydrodynamics and modeling of methane combustion." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/27743.

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A novel interconnected fluidized bed (IFB) reactor with a bypass line for chemical looping combustion (CLC) has been developed to overcome the problem of short residence time of oxygen carrier in the air reactor. A comprehensive hydrodynamic study was carried out on the cold-flow model of the proposed reactor. Detailed mapping of the operating conditions for the reactor system was studied. Pressure transducers were applied to investigate the pressure loops and the cross-sectional average solids hold-up along the air reactor. Solids circulation flux between the two reactors was measured usi

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15

Yagdjian, Karen, and Anahit Galstian. "Fundamental solutions for wave equation in de Sitter model of universe." Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2009/3027/.

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In this article we construct the fundamental solutions for the wave equation arising in the de Sitter model of the universe. We use the fundamental solutions to represent solutions of the Cauchy problem and to prove the Lp − Lq-decay estimates for the solutions of the equation with and without a source term.

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16

Mustapha, Nazeem. "Aspects of a spherically symmetric model of the post-decoupling universe." Master's thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/17524.

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Bibliography: pages 84-88.<br>The central aim of this thesis is to consider aspects of the spherically symmetric Lemaitre-Tolman-Bondi (LTB) solution as a model of the post-decoupling universe. To do this comprehensively is a massive task and is not our aim here. Indeed, far from it, we will concentrate on select instances of this programme and attempt in some places to indicate possibilities for further study. There are many solutions of the EFE which satisfy what we consider to be 'reasonable criteria' for a cosmology and others that do not. The LTB solution may be accepted as a reasonable c

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17

Wong, Ki-cheong, and 王祺昌. "Inflation and late time acceleration of the universe by variable Branetension on Braneworld model." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43224015.

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18

Mai, Van Bac. "Fracture Behaviour in Cold-Reduced High-Strength Steel." Phd thesis, University of Sydney, 2019. https://hdl.handle.net/2123/29311.

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A comprehensive study on the ductile behaviour and fracture of high strength cold-reduced sheet G450 steel is presented. The aim of the study is to determine the material strength, ductility and fracture in different stress states including at both macro and structural scales. The objectives of the research are achieved through theoretical developments, extensive experimental studies and numerical investigations. A couple damage-plasticity model derived from a generic thermodynamic framework is developed. The general formulation allows integration of stress effects (e.g. stress triaxiality an

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19

Risikko, T. (Tanja). "Safety, health and productivity of cold work:a management model, implementation and effects." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514291883.

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Abstract Cold is a very common physical risk factor in workplaces in circumpolar regions. Cold has many detrimental effects on human health and performance, and on the safety, quality and productivity of work. In this study a systematic general Cold Risk Management Model was developed, applied and evaluated. The model can be integrated in a company’s or an organization’s occupational safety, health, environment and quality (SHEQ) management systems and practices in workplaces. The Cold Risk Management Model and methods were later included in ISO 15743 Ergonomics of the thermal environment – Co

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20

Coulombe, S. (Sylvain). "A model of the electric arc attachment on non-refractory (cold) cathodes /." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34710.

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In this work, a physical model describing the electric arc attachment on electron emitting non-refractory (cold) cathodes is developed and applied to Cu, Fe and Ti cathodes. The model considers the possibility of a pressure build up in the cathode region due to the strong vaporization of the cathode, the formation of a cathode sheath according to the Bohm's model, and the ion-enhanced thermo-field emission of electrons by the cathode surface. The self-sustaining operating conditions of the discharge are defined by two simple criteria based on particle and energy balance considerations. Results

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21

Khalil, Hala. "Model Medicago species for studies of low temperature signaling and cold acclimation." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30844.

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To identify a model legume experimental system for studying low temperature signaling and cold acclimation, cold-induced expression and regulation of homologues of alfalfa (Medicago sativa) cold acclimation-specific genes cas15 and cas30 were examined in M. arborea (relatively frost tolerant) and M. truncatula (relatively frost sensitive). Both cas15 and cas30 genes are present in the genomes of both species but whereas both genes are cold-induced in M. arborea, only cas15 is induced in M. truncatula. Cold-induced expression of these genes is inhibited by calcium chelators and channel blockers

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22

Lim, Mook Tzeng. "Hydrodynamics of a Cold Model of a Dual Fluidized Bed Gasification Plant." Thesis, University of Canterbury. Chemical and Process Engineering, 2012. http://hdl.handle.net/10092/6287.

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Biomass energy is increasingly used to reduce the dependence on fossil fuels and reduce the impact of greenhouse gas emissions on global warming. Fluidized bed gasification converts solid biomass into gaseous fuels that can be used for combustion or liquid fuels synthesis. The efficiency of biomass gasification is directly affected by the fluidized bed hydrodynamics. For example, the solids recirculation rate through the system is an important parameter that affects the heat and mass transfer rates. In this study, a cold model of a dual fluidized bed (DFB) biomass gasification plant was design

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23

Tardillo, Mijail, Jorge Torres, Edgar Ramos, Fernando Sotelo, and Steven Dien. "Cold Supply Chain Logistics Model Applied in Raspberry: An Investigation in Perú." Springer, 2021. http://hdl.handle.net/10757/656090.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial.<br>This research describes the viability of the processes in the logistics industry of the cold chain of raspberries in Peru. The cultivation of raspberries is in the stage of potential growth opportunities for agribusiness. Output logistics is an essential part of the management of the food supply chain; this improves performance and quality in the fresh product. The cold chain and proper practice techniques preserve quality and reduce raspberry production losses by 15%

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24

Cohenour, John Curtis. "Model Development and Disturbance Rejection in the Cold Rolling of Thin Sheet." Ohio University / OhioLINK, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1239729663.

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25

Smer, Barreto Vanessa Stephanie Emilia. "Probing of dark energy properties in the Universe using astrophysical observations." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28956.

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The astrophysical data of the last two decades have allowed cosmologists to conclude that the present Universe is accelerating. The research carried out to find the origin of this phenomenon has led to the creation of a vast number of dark energy and modified gravity theories, of which the simplest is the ˄CDM model. The latter is, however, plagued with very difficult problems awaiting a solution. The work here presented seeks to contribute to the discussion of the possible explanation for the Cosmos' acceleration and other important questions in modern cosmology using the newest astrophysical

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26

Wong, Ki-cheong. "Inflation and late time acceleration of the universe by variable Brane tension on Braneworld model." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43224015.

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27

Wu, Sihong. "Impact of cold climate on boreal ecosystem processes : exploring data and model uncertainties." Doctoral thesis, KTH, Biogeofysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-40451.

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The impact of cold climate on physical and biological processes, especially the role of air and soil temperature in recovering photosynthesis and transpiration in boreal forests, was investigated in a series of studies. A process-based ecosystem model (CoupModel) considering atmospheric, soil and plant components was evaluated and developed using Generalized Likelihood Uncertainty Estimation (GLUE) and detailed measurements from three different sites. The model accurately described the variability in measurements within days, within years and between years. The forcing environmental conditions

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28

Holck-Clausen, Jens, and Karin Mattisson. "Fuktstudie om uteluftsventilerade vindar med beräkningsprogrammet Simple Cold Attic Model från Annex 55." Thesis, KTH, Byggteknik och design, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-149297.

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Fuktskador på uteluftsventilerade vindar är ett ökat problem, i det mer miljömedvetna Sverige. Genom tjockare vindsbjälklagsisolering minskar både energiförlusten genom bjälklaget och uppvärmningsbehovet i huset, men hur många funderar på vad som händer med det förändrade klimatet på vinden och hur det kan påverka fuktförhållandena i utsatta delar av konstruktionen. Studier från Chalmers Tekniska Högskola har framställt ett fuktberäkningsprogram för uteluftsventilerade vindar vid namn Simple Cold Attic Model. Programmets funktion och potential har prövats i denna rapport genom en beräkningsana

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Feng, Leyang. "Sensitivity Analysis of Hot/Cold Pixel Selection in SEBAL Model for ET Estimation." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/73576.

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The objective of this study was to evaluate the sensitivity of instantaneous latent heat flux (LE) estimation from Surface Energy Balance Algorithm for Land (SEBAL) by changing hot/cold pixel selections. The SEBAL model was programed in a Matlab environment and applied to Lower Fox Watershed in northeast Illinois using two Landsat 5 Thematic Mapper images acquired in summer 2006. Unlike most previous studies where hot/cold pixel were manually selected by image analysts, we emphasized an automated hot/cold pixel selection based on land cover map, normalized difference vegetation index (NDVI) ma

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Vincent, Aaron. "Curvature spectra and nongaussianities in the Roulette Inflation model of the early universe." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21998.

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We explore the "Roulette Inflation" model, a variety of two-field Kahler moduli inflation scenario with a nonstandard kinetic term derived from Type IIB string theory in the large-volume compactification. We provide an overview of the model and the cosmological tools used to compute observables. Our calculations show that entropy perturbations can account for up to 90% of Ps(k) at COBE scales. We further show that the effective single-field result over-estimates the scalar spectral index; a full calculation predicts a slightly red-shifted spectrum 0.92 < ns < 0.98. Calculation of nongaussianit

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31

Schulze, Robert. "From hot lattice QCD to cold quark stars." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-65426.

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A thermodynamic model of the quark-gluon plasma using quasiparticle degrees of freedom based on the hard thermal loop self-energies is introduced. It provides a connection between an established phenomenological quasiparticle model – following from the former using a series of approximations – and QCD – from which the former is derived using the Cornwall-Jackiw-Tomboulis formalism and a special parametrization of the running coupling. Both models allow for an extrapolation of first-principle QCD results available at small chemical potentials using Monte-Carlo methods on the lattice to large ne

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32

Georgian, Sam Ellis. "ENVIRONMENTAL AND ENERGETIC CONSTRAINTS ON COLD-WATER CORALS." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/382890.

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Biology<br>Ph.D.<br>Cold-water corals act as critical foundation species in the deep sea by creating extensive three-dimensional habitat structures that support biodiversity hotspots. There is currently a paucity of data concerning the environmental requirements and physiology of cold-water corals, severely limiting our ability to predict how resilient they will be to future environmental change. Cold-water corals are expected to be particularly vulnerable to the effects of ocean acidification, the reduction in seawater pH and associated changes to the carbonate system caused by anthropogenic

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Stanton, Wendy Marie. "An Analysis of the Physical Processes and Model Representation of Cold Air Damming Erosion." NCSU, 2003. http://www.lib.ncsu.edu/theses/available/etd-08052003-202239/.

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The occurrence of Appalachian cold air damming (CAD) is often associated with significant sensible weather impacts throughout the Carolinas and Virginia. CAD sensible weather, defined as below-normal maximum temperatures, overcast skies, fog, and reduced visibility, can often persist in the damming region for days. Furthermore, the confinement of a dome of low-level cold air along the eastern slopes of the Appalachians can create an environment ideal for freezing rain and sleet. Such potentially hazardous conditions necessitate accurate and timely forecasting in order to properly warn the publ

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34

Manasrah, Ahmad. "Application and Analysis of Asymmetrical Hot and Cold Stimuli." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6309.

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The human body has a unique mechanism for perceiving surrounding temperatures. When an object is in contact with the skin, we do not feel its temperature. Instead, we feel the temperature change that is caused on our skin by that object. The faster the heat is transferred, the more intense the thermal sensation is. In this dissertation, a new dynamic thermal display method, where different rates of warm and cold are applied on the skin to generate a unique sensation, is presented. The new method can be related in a wide range of applications including thermal haptics and virtual reality. To un

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Dewaidi, Mohaned Ali. "Design Method for Cold-Formed Steel Shear Wall Sheathed with Polymer Composite Panel." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1707373/.

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In order to predict the strength of shear wall with cold-formed steel framing members, analytical models were reviewed. Multiple analytical models were studied, as well as twenty-one connection tests were performed. The connection tests consist of 50-ksi cold-formed steel framing track, different fastening configurations, and different sheathing thicknesses (1/8" and 1/2"). No.12 screw resulted in the highest peak load of all fastening configurations, while the rivet connection had the lowest peak load. In addition, failure modes were observed after conducting the connection tests including sh

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Lindeman, Suzanna Alison. "Assessment of Model Forecast Temperature Bias During Cold Air Damming in the Central Appalachian Mountains." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83476.

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Cold-air damming (CAD) is a prevalent Mid-Atlantic United States weather phenomenon that occurs when cold, dense air is dammed alongside the eastern slopes of the Appalachian Mountains. Lower-than-normal maximum temperatures, increased and prolonged cloud cover, and precipitation that produces hazardous impacts are common features of this weather event, which are well known for presenting difficulties to both human forecasters and weather prediction models. This study explores CAD events between 2007 and 2016 archived in a Blacksburg National Weather Service ‘bust’ database – instances when fo

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Yousof, Mohamad. "Analytical Model for Lateral Deflection in Cold-formed Steel Framed Shear Walls with Steel Sheathing." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc700013/.

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An analytical model for lateral deflection in cold-formed steel shear walls sheathed with steel is developed in this research. The model is based on the four factors: fastener displacement, steel sheet deformation, and hold-down deformation, which are from the effective strip concept and a complexity factor, which accounts for the additional influential factors not considered in the previous three terms. The model uses design equations based on the actual material and mechanical properties of the shear wall. Furthermore, the model accounts for aggressive and conservative designers by predictin

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Omasa, Mitsugu. "Glycine ameliorates lung reperfusion injury after cold preservation in an ex vivo rat lung model." Kyoto University, 2004. http://hdl.handle.net/2433/147462.

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Syrén, Felicia. "Study on the suitability of a new method for in-situ viscosity measurement in industrial practice." Thesis, KTH, Materialvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147882.

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In this work cold model experiments in combination with Comsol modeling have been carried out to investigate the possibilities of a new method for industrial inline measurements of slag viscosities. The method aims at measuring the mass of the drag force as a sphere is dragged upwards in a liquid. The sphere was connected to a balance that was elevated at constant velocity. The liquids used were silicon oils of two different viscosities; 0.1 Pa*s and 0.5 Pa*s. A computer logged the mass from which the viscosity was calculated. Comsol modeling was used to show approximately at which time the dr

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40

Nilsson, Lino. "Nitrogen Cycling at Cold Climate Mine Sites in Northen Sweden." Licentiate thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-59661.

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High nitrogen discharge from mining sites has been an environmental issue that has been closely studied in the recent years. The environmental effects of high nitrogen discharge are mainly eutrophication, but can also lead to changed species composition and algae blooms. Nitrogen is a highly abundant element and is the most abundant element in the atmosphere, where 78% by volume is present as dinitrogen (N2 ). Nitrogen is present in reduced form in all organic life as ammonium (NH4 + ). Nitrogen is also present in reduced form as nitrate (NO3 - ) or nitrite (NO2 - ) in most aquatic systems. B

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Marques, Luís Miguel Costa. "Natural antioxidants extraction and their incorporation into model pharmaceutical systems." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6324.

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Dissertation to obtain a Master Degree in Biotechnology<br>This work is divided in two parts comprising two distinct areas of science that are bonded with a functional purpose: study of the polyphenolic composition in leaves of three coffee genotypes and their responses to cold and drought stresses; and analysis of the effect of incorporation of some polyphenolic compounds in a microemulsion model system. Three genotypes of coffee, Icatu Obatã and Apoatã, were subjected to temperature and water content stress conditions and their sensitivity or resistance to the treatments imposed was investi

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Fujita, Koji, 耕史藤田, Takeshi Ohta, and Yutaka Ageta. "Characteristics and climatic sensitivities of runoff from a cold-type glacier on the Tibetan Plateau." Wiley, 2007. http://hdl.handle.net/2237/11361.

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Yanagi, Noritsugu. "Analytical Model of Cold-formed Steel Framed Shear Wall with Steel Sheet and Wood-based Sheathing." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271920/.

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The cold-formed steel framed shear walls with steel sheets and wood-based sheathing are both code approved lateral force resisting system in light-framed construction. In the United States, the current design approach for cold-formed steel shear walls is capacity-based and developed from full-scale tests. The available design provisions provide nominal shear strength for only limited wall configurations. This research focused on the development of analytical models of cold-formed steel framed shear walls with steel sheet and wood-based sheathing to predict the nominal shear strength of the wal

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Ngo, Quang Tien. "Thermo-elasto-plastic uncoupling model of width variation for online application in automotive cold rolling process." Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST1063/document.

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Afin d'optimiser la mise aux milles au laminage à froid, la thèse consiste à développer un modèle prédictif de variation de largeur à la fois précis et rapide pour des utilisations en temps réel. Des efforts ont commencé en 1960s en développant des formules empiriques. Par la suite, la Méthode des Bornes Supérieures (MBS) est devenue la plus connue. [Oh 1975] utilisant le champ de vitesse 3D "simple" prédit bien la variation de largeur au laminage en conditions d'un tandem finisseur. [Komori 2002] a proposé une combinaison des champs fondamentaux et obtenu une structure informatique peu dépend

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Karaca, Koray. "A Physical Model For Dimensional Reduction And Its Effects On The Observable Parameters Of The Universe." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606125/index.pdf.

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In this thesis, assuming that higher spatial dimensions existed only during the inflationary prematter phases of the universe, we construct a (1+D)-dimensional (D&gt<br>3), nonsingular, homogeneous and isotropic Friedmann model for dimensional reduction. In this model, dimensional reduction occurs in the form of a phase transition that follows from a purely thermodynamical consideration that the universe heats up during the inflationary prematter phases. When the temperature reaches its Planck value Tpl,D, which is taken as the maximum attainable physical temperature, the phase of the univers

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Baumann, Jochen Peter [Verfasser], and Stefan [Akademischer Betreuer] Antusch. "Early universe cosmology in supersymmetric extensions of the standard model / Jochen Peter Baumann. Betreuer: Stefan Antusch." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1022524186/34.

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Flores, Herrera Mario Andres de Jesus. "Galaxy formation: from primordial fluctuations to structure formation in the Universe." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14761/.

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Durante questa tesi studieremo principalmente i modelli di formazione di struttura nel universo di Press & Schechter(1974) e di White & Rees (1978), che spiegano la formazione galattica con un modello gerarchico di formazione di tutte le strutture cosmiche, dalla crescita delle piccole perturbazioni primordiali fino alla formazione della materia, e come essa si evolve per formare stelle e poi sistemi stellari, cioè, galassie. Una parte importante di questa tesi sarà dedicata a studiare la formazione di aloni di materia oscura, che sono vere e proprie buche di potenziale, in cui la mater

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Cheng, Shanshan. "Fire performance of cold-formed steel sections." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3316.

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Thin-walled cold-formed steel (CFS) has exhibited inherent structural and architectural advantages over other constructional materials, for example, high strength-to-weight ratio, ease of fabrication, economy in transportation and the flexibility of sectional profiles, which make CFS ideal for modern residential and industrial buildings. They have been increasingly used as purlins as the intermediate members in a roof system, or load-bearing components in low- and mid-rise buildings. However, using CFS members in building structures has been facing challenges due to the lack of knowledge to th

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Lo, Yi-Ping. "A new individual-based modelling framework for bacterial biofilm growth applied to cold plasma treatment." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12311.

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Biofilms are colonies of bacteria attached to the surface at a solid-fluid interface. Bacteria in biofilm produce exopolysaccharides (EPS) that form a gel-like matrix in which the bacteria are embedded. Biofilms have numerous consequences in industrial and medical settings, both positive (bioreactors, digestion) and negative (blocking, as corrosive damage of materials/devices, food contamination, clinical infection). The use of antibiotics or mechanical clearing can be effective at removing biofilms, but such treatments are not always effective or appropriate in all situations. Recently, non-t

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Grasdock, Wayne G. "Post-Cold War PERSTEMPO policies and challenges : an examination of the Baseline Engagement Force Assessment and Model." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA355050.

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Thesis (M.S. in Leadership and Human Resource Development) Naval Postgraduate School, August 1998.<br>"August 1998." Thesis advisor(s): Richard B. Doyle, Walter E. Owen. Includes bibliographical references (p. 87-90). Also available online.

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