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Dissertations / Theses on the topic 'Manifolds with constant energy'

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Published: 4 June 2021

Last updated: 4 February 2022

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1

Filho, Francisco de Assiss Benjamim. "A partial answer to the CPE conjecture, diameter estimates and manifolds with constant energy." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14748.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Esta tese estÃ dividida em quatro partes. Na primeira delas estudaremos pontos crÃticos do funcional curvatura escalar total restrito ao espaÃo das mÃtricas de curvatura escalar constante e volume unitÃrio. Provaremos que sob certas condiÃÃes integrais convenientes os pontos crÃticos de tal funcional sÃo variedades de Einstein provando assim a conjectura dos pontos crÃticos neste caso. Na segunda parte, veremos duas estimativas para o primeiro autovalor do Laplaciano d

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Garcia-Leon, Joel. "Cheeger constant and isoperimetric inequalities on Riemannian manifolds." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417041.

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3

Thomas, Joseph. "Conformal Variations of Piecewise Constant Curvature Two and Three Dimensional Manifolds." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/560854.

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Piecewise constant curvature manifolds are discrete analogues of Riemannian manifolds in which edge lengths play the role of the metric tensor. These triangulated manifolds are specified by two types of data: 1. Each edge in the triangulation is assigned a real-valued length. 2. For each simplex in the triangulation, there exists an isometric embedding of that simplex into one of three background geometries (Euclidean, hyperbolic, or spherical). In particular, this isometry respects the edge length data. By making the edge lengths functions of scalars, called conformal parameters, that are ass

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4

Santos, Almir Rogério Silva. "A construction of constant scalar curvature manifolds with delaunay-type ends." reponame:Repositório Institucional da UFS, 2009. https://ri.ufs.br/handle/riufs/825.

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Foi provado por Byde que é possível adicionar um fim do tipo Delaunay a uma variedade compacta não degenerada de curvatura escalar constante positiva; desde que ela seja localmente conformemente plana em alguma vizinhança do ponto de colagem. A variedade resultante é não-compacta e possui a mesma curvatura escalar constante. O principal objetivo desta tese é generalizar este resultado. Construiremos uma família a um parâmetro de soluções para o problema de Yamabe singular positivo em qualquer variedade compacta não degenerada cujo tensor de Weyl anula-se até uma ordem suficientemente grande no

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5

Zhang, Tan. "Manifolds with indefinite metrics whose skew-symmetric curvature operator has constant eigenvalues /." view abstract or download file of text, 2000. http://wwwlib.umi.com/cr/uoregon/fullcit?p9978605.

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Thesis (Ph. D.)--University of Oregon, 2000.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 123-128). Also available for download via the World Wide Web; free to University of Oregon users.

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6

Zhang, Tan 1969. "Manifolds with indefinite metrics whose skew-symmetric curvature operator has constant eigenvalues." Thesis, University of Oregon, 2000. http://hdl.handle.net/1794/150.

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Adviser: Peter B. Gilkey. ix, 128 leaves<br>A print copy of this title is available through the UO Libraries under the call number: MATH QA613 .Z43 2000<br>Relative to a non-degenerate metric of signature (p, q), an algebraic curvature tensor is said to be IP if the associated skew-symmetric curvature operator R(π) has constant eigenvalues and if the kernel of R(π) has constant dimension on the Grassmanian of non-degenerate oriented 2-planes. A pseudo-Riemannian manifold with a non-degenerate indefinite metric of signature (p, q) is said to be IP if the curvature tensor of the Levi-Civita c

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Gutierrez, Manuel S. M. Massachusetts Institute of Technology. "An energy buffer for constant power loads." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111914.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 111-113).<br>Constant power loads (CPLs) are a class of loads steadily increasing in use. They are present whenever a load is regulated to maintain constant output power, such as with LED drivers in high quality lighting that is impervious to input fluctuations. Because CPLs exhibit a negative incremental input impedance, they pose stability concerns in DC and AC systems. This thesis presents

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8

Lohkamp, Joachim. "Existenz von Metriken negativer Ricci-Krümmung." Bonn : [s.n.], 1992. http://catalog.hathitrust.org/api/volumes/oclc/29040814.html.

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9

Ektas, Tevfik. "Energy consumption at KTH : Foundation for constant improvement." Thesis, KTH, Industriell ekologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191264.

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Som ett universitet som har erhållit bottenbetyg bland statliga myndigheter 2009 har KTH idag en vision om att bli ett av Europas ledande universitet inom miljö och hållbar utveckling. Syftet med detta examensarbete var att undersöka KTH:s energianvändning utifrån ett systemperspektiv med delsyftet att resultatet ska kunna användas som ett underlag med konkreta förbättringsförslag. För att uppnå detta har en energikartläggning av KTH:s skolor och nulägesbeskrivning utförts. Vidare har en intervjustudie genomförts för att erhålla en fördjupning i det energiarbete KTH och Akad

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Vržina, Miroslav [Verfasser], Karsten [Akademischer Betreuer] Große-Brauckmann, and Matthias [Akademischer Betreuer] Schneider. "Constant Mean Curvature Annuli in Homogeneous Manifolds / Miroslav Vržina. Betreuer: Karsten Große-Brauckmann ; Matthias Schneider." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2016. http://d-nb.info/111226924X/34.

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PENAFIEL, CARLOS DIOSDADO ESPINOZA. "SURFACES OF CONSTANT MEAN CURVATURE IN HOMOGENEOUS THREE MANIFOLDS WITH EMPHASIS IN GPSL2(R, Τ )". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16214@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO<br>Nesta teses, nós estudamos H-superfícies, isto é, superfícies tendo curvatura media constante, imersas em variedades homogêneas simplesmente conexas de dimensão 3. Nós focamos nossa atenção no estudo de existência de H multigráficos. Também estudamos a H-superfícies invariantes por um grupo a um parâmetro de isometrias que estão imersas no espaço PSL(2) (R, T).<br>In this thesis we study H-surfaces, that is, surfaces having constant mean curvature, immersed in homogeneous

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12

Bihun, Oksana Chicone Carmen Charles. "Approximate isometries and distortion energy functionals." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6129.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb. 11, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Professor Carmen Chicone. Vita. Includes bibliographical references.

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13

Cui, Han. "Constant-Flux Inductor with Enclosed-Winding Geometry for Improved Energy Density." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/34722.

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The passive components such as inductors and capacitors are bulky parts on circuit boards. Researchers in academia, government, and industry have been searching for ways to improve the magnetic energy density and reduce the package size of magnetic parts. The â constant-fluxâ concept discussed herein is leveraged to achieve high magnetic-energy density by distributing the magnetic flux uniformly, leading to inductor geometries with a volume significantly lower than that of conventional products. A relatively constant flux distribution is advantageous not only from the density standpoint, bu

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Caliskan, Ahmet. "Constant Voltage, Constant Frequency Operation Of A Self-excited Induction Generator." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606678/index.pdf.

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In this thesis, control schemes for the self-excited induction generator are developed with Matlab/Simulink. Self-excited induction generator is considered as a constant voltage-constant frequency supply for an isolated load. A wind turbine is assumed to be the variable-speed drive of the induction generator. Control schemes aim to ensure a constant voltage-constant frequency operation of the induction generator in case of the variations in the wind speed and/or the load. From the general model of the self-excited induction generator, the characteristics of the system and the dynamic responses

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15

Ramos, Álvaro Krüger. "Constant mean curvature hypersurfaces on symmetric spaces, minimal graphs on semidirect products and properly embedded surfaces in hyperbolic 3-manifolds." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/118222.

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Provamos resultados sobre a geometria de hipersuperfícies em diferentes espaços ambiente. Primeiro, definimos uma aplicação de Gauss generalizada para uma hipersuperfície Mn-1 c/ Nn, onde N é um espaço simétrico de dimensão n ≥ 3. Em particular, generalizamos um resultado de Ruh-Vilms e apresentamos aplicações. Em seguida, estudamos superfícies em espaços de dimensão 3: estudamos a equação da curvatura média em um produto semidireto R2oAR e obtemos estimativas da altura e a existência de gráficos mínimos do tipo Scherk. Finalmente, no espaço ambiente de uma variedade hiperbólica de dimensão 3:

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Fromille, Samuel S. IV. "Novel Concept for High Dielectric Constant Composite Electrolyte Dielectrics." Thesis, Monterey, California. Naval Postgraduate School, 2013. http://hdl.handle.net/10945/53408.

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Approved for public release<br>This research was part of an ongoing program studying the concept of multi-material dielectrics (MMD) with dielectric constants much higher than homogenous materials. MMD described in this study have dielectric constants six orders of magnitude greater than the best single materials. This is achieved by mixing conductive particles with an insulating surface layer into a composite matrix phase composed of high surface area ceramic powder and aqueous electrolyte. Specifically examined in this study was micron-scale nickel powder treated in hydrogen peroxide (H2O2)

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Fritsch, LeaAnn Thompson. "Effects of chronic suboptimal energy intake on constant-load exercise in young women." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-09182008-063227/.

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18

Lai, Yeh-Hung. "The constrained blister - a nearly constant strain energy release rate test for adhesives." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/44077.

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<p>This study developed and analyzed a modification of the blister test permitting nearly constant strain energy release rate testing of adhesive bonds. The work consisted of three parts; (1) development of the testing technique to evaluate strain energy release rate and to record the time dependent nature of the fracture process, (2) numerical analysis of the constrained blister test to determine the applicability of an approximate solution for several materials, and (3) development of an. analytical technique to evaluate the strain energy release rate for relatively stiff specimens.<

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Beyene, Mussie Abraham. "Modelling the Resilience of Offshore Renewable Energy System Using Non-constant Failure Rates." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445650.

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Offshore renewable energy systems, such as Wave Energy Converters or an Offshore Wind Turbine, must be designed to withstand extremes of the weather environment. For this, it is crucial both to have a good understanding of the wave and wind climate at the intended offshore site, and of the system reaction and possible failures to different weather scenarios. Based on these considerations, the first objective of this thesis was to model and identify the extreme wind speed and significant wave height at an offshore site, based on measured wave and wind data. The extreme wind speeds and wave heig

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Gamsizkan, Halil. "A Qcd Analysis Of High Energy Neutrino-nucleon Interactions." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1006428/index.pdf.

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In this thesis, a leading-order QCD analysis of structure functions in neutrinonucleon interactions is performed. From the CCFR nucleon structure function data, the QCD parameter Lambda has been extracted. This measurement also corresponds to a measurement of the strong coupling constant. Two fits to the data have been performed, the nonsinglet-only fit and the singlet-nonsinglet combined fit. The result for Lambda was found to be 289 +62 &iexcl<br>59 &sect<br>76 MeV, where the errors are statistical and systematical, respectively. This result is compared to the world-wide measurements of this

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Thompson, Rodger I. "Fundamental constant observational bounds on the variability of the QCD scale." OXFORD UNIV PRESS, 2017. http://hdl.handle.net/10150/623802.

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Many physical theories beyond the Standard Model predict time variations of basic physics parameters. Direct measurement of the time variations of these parameters is very difficult or impossible to achieve. By contrast, measurements of fundamental constants are relatively easy to achieve, both in the laboratory and by astronomical spectra of atoms and molecules in the early universe. In this work, measurements of the proton to electron mass ratio mu and the fine structure constant alpha are combined to place mildly model-dependent limits on the fractional variation of the quantum chromodynami

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22

Hagan, Scott. "Scale invariant and topological approaches to the cosmological constant problem." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39926.

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The cosmological constant is historically reviewed from its introduction in classical and relativistic cosmology through its modern quantum guise where it appears as a vacuum energy density. Limits on the empirical value are in glaring contradiction to the expectations of field theoretical calculations.<br>Motivated by the natural connection between dilatation invariance and the extinction of the vacuum energy density, a phenomenological realization of a global scale symmetry is constructed. A complete treatment of such a realization in the context of a supergravitational toy model is calculat

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Teixeira, Aline de Moraes. "Subvariedades de ângulo constante em 3-variedades homogêneas." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/55/55135/tde-11082015-162322/.

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Um resultado clássico enunciado por M.A. Lancret em 1802 e provado por B. de Saint Venant em 1845 é: uma condição necessária e suficiente para que uma curva forme um ângulo constante com respeito a um campo de Killing unitário de R3 é que a razão entre a curvatura e a torção seja constante. Curvas deste tipo são chamadas hélices generalizadas. O problema de Lancret-de Saint Venant foi generalizado para curvas em outras variedades de dimensão três como, por exemplo, as formas espaciais e os grupos de Lie. Outra maneira de generalizar o estudo anterior é passar de curvas para superfícies, ou sej

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Dufour, Marc-Andre. "Determination of the strong coupling constant from multi-jet production with the ATLAS detector." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107650.

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The strong coupling constant alpha_S is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using 38 pb^−1 of data recorded by the ATLAS detector. An inclusive jet production ratio distribution is used to reduce parton distribution functions dependence and measure the coupling strength at energy scales between 100 GeV and 1.5 TeV. The value of the strong coupling constant alpha_S(MZ) is measured to be 0.111^+0.016_−0.012, in agreement with similar measurements performed at hadron colliders and the world average value. Results are also consistent with the running of the cou

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Cao, Jing. "Mechanical properties and prediction of "pseudo-creep" of overhead power transmission conductors under room temperature and constant load." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22643.

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An overhead power transmission conductor must maintain a safe distance from the objects underneath it. However, this distance decreases with time, even under conditions where metallurgical creep of the cable material does not occur, for instance, at room temperature. This phenomenon is first identified as "pseudo creep".<br>The creep behavior of a cable is directly related to its mechanical properties, which correspond to the applied loads under certain boundary conditions. Twist due to cable rotation and radial compression due to layer-to-layer contact are taken into consideration, so that a

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Plamondon, Mathieu. "Determination of the strong coupling constant from dijet production in deep inelastic scattering at HERA." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82407.

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In the present analysis, the constant alphas of Quantum Chromodynamics (QCD) is determined from dijets production in the regime of neutral current deep inelastic scattering (NC DIS) with high momentum transfer Q2. This measurement uses the data collected between the years 1998 to 2000 by the ZEUS detector located on the HERA ring collider in Hamburg, Germany. Corresponding to an integrated luminosity of 82.7 pb-1, the data were produced by the interactions between 27.5 GeV electrons (or positrons) and 920 GeV protons. Defined in a phase space reducing the theoretical and systematic unce

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Habeck, Christian. "Experimental determination of the weak coupling constant ratio Gâ†A/Gâ†V in neutron decay." Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364138.

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Can, Kadir Utku. "D*dpi Coupling Constant In 2+1 Flavor Lattice Qcd." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614698/index.pdf.

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Developments in high-performance computing instruments and advancements in the numerical algorithms combined with lattice gauge theory make it possible to simulate Quantum Chromodynamics (QCD), the theory of strongly-interacting quarks and gluons, numerically at nearly physical light-quark masses. In this work we present our results for the $D^*Dpi$ coupling constant as simulated on $32^3 imes 64$, unquenched $2+1$-flavor lattices. We estimate the coupling at the chiral limit as $g_{D^*Dpi} = 16.23 pm 1.71$, which is in good agreement with its experimental value $g^{(exp)}_{D^*Dpi} = 17.9pm0.

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Westmoreland, Shawn. "Energy conditions and scalar field cosmology." Kansas State University, 2013. http://hdl.handle.net/2097/15811.

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Master of Science<br>Department of Physics<br>Bharat Ratra<br>In this report, we discuss the four standard energy conditions of General Relativity (null, weak, dominant, and strong) and investigate their cosmological consequences. We note that these energy conditions can be compatible with cosmic acceleration provided that a repulsive cosmological constant exists and the acceleration stays within certain bounds. Scalar fields and dark energy, and their relationships to the energy conditions, are also discussed. Special attention is paid to the 1988 Ratra-Peebles scalar field model, which is no

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Malik, Mohammad Rafi. "Reduced-orderCombustion Models for Innovative Energy Conversion Technologies." Doctoral thesis, Universite Libre de Bruxelles, 2021. https://dipot.ulb.ac.be/dspace/bitstream/2013/318799/4/TOC.pdf.

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The present research seeks to advance the understanding and application of Principal Component Analysis (PCA)-based combustion modelling for practical systems application. This work is a consistent extension to the standard PC-transport model, and integrates the use of Gaussian Process Regression (GPR) in order to increase the accuracy and the potential of size reduction offered by PCA. This new model, labelled PC-GPR, is successively applied and validated in a priori and a posteriori studies.In the first part of this dissertation, the PC-GPR model is validated in an a priori study based on st

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Nilsson, Mattias. "Entropy and Speech." Doctoral thesis, Stockholm : Sound and Image Processing Laboratory, School of Electrical Engineering, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3990.

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Bien-Aime, Andre J. "Effect of Cement Chemistry and Properties on Activation Energy." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4439.

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The objective of this work is to examine the effect of cement chemistry and physical properties on activation energy. Research efforts indicated that time dependent concrete properties such as strength, heat evolution, and thermal cracking are predictable through the concept of activation energy. Equivalent age concept, which uses the activation energy is key to such predictions. Furthermore, research has shown that Portland cement concrete properties are affected by particles size distribution, Blaine fineness, mineralogy and chemical composition. In this study, four Portland cements were use

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He, Yafei, Panpan Zhang, Faxing Wang, et al. "Vacancy modification of Prussian-blue nano-thin films for high energy-density microsupercapacitors with ultralow RC time constant." Elsevier, 2019. https://tud.qucosa.de/id/qucosa%3A73173.

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In-plane micro-supercapacitors (MSCs), as promising power candidates for micro-devices, typically exhibit high power densities, large charge/discharge rates, and long cycling lifetimes. The high areal/volumetric capacitances, high energy/power densities, high rate capability, as well as flexibility are the main scientific pursue in recent years. Among diverse electrode materials for MSCs, coordination polymer frameworks are emerging due to the designable porous structure and tunable functionality. However, the unsatisfied electrochemical performance still hinders their practical applications.

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Shintani, Aiku. "The Design, Testing, and Analysis of a Constant Jammer for the Bluetooth Low Energy (BLE) Wireless Communication Protocol." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2163.

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The decreasing cost of web-enabled smart devices utilizing embedded processors, sensors, and wireless communication hardware have created an optimal ecosystem for the Internet of Things (IoT). IEEE802.15.4, IEEE802.11ah, WirelessHART, ZigBee Smart Energy, Bluetooth (BT), and Bluetooth Low Energy (BLE) are amongst the most commonly used wireless standards for IoT systems. Each of these standards has tradeoffs concerning power consumption, range of communication, network formation, security, reliability, and ease of implementation. The most widely used standards for IoT are Bluetooth, BLE, and Z

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Sherrell, Ian M. "Development of a Flotation Rate Equation from First Principles under Turbulent Flow Conditions." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/29943.

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A flotation model has been proposed that is applicable in a turbulent environment. It is the first turbulent model that takes into account hydrodynamics of the flotation cell as well as all relevant surface forces (van der Waals, electrostatic, and hydrophobic) by use of the Extended DLVO theory. The model includes probabilities for attachment, detachment, and froth recovery as well as a collision frequency. A review of the effects fluids have on the flotation process has also been given. This includes collision frequencies, attachment and detachment energies, and how the energies of the turbu

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TORRES, D. F. C. "The tension between global and local determinations of the Hubble constant in the presence of a non-standard dark energy." Universidade Federal do Espírito Santo, 2018. http://repositorio.ufes.br/handle/10/7372.

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Made available in DSpace on 2018-08-01T21:59:24Z (GMT). No. of bitstreams: 1 tese_11869_Dissertação David Francisco Camarena Torres - PPGFis.pdf: 3693932 bytes, checksum: d4dbee4c7e7b629e6aee4ab2ede4044e (MD5) Previous issue date: 2018-02-26<br>Existe uma tensão ao redor de 3.4σ entre as determinações globais e locais da constante de Hubble H0 fornecidas por observações de supernovas de tipo Ia [1] e da radiação cósmica de fundo [2], respectivamente. Esta tensão não pode ser explicada pelo modelo de concordança ΛCDM e ela poderia ser produzida por erros sistemáticos desconhecidos n

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Reimer, Brad W. "The effect of cadence on aerobic and anaerobic contributions to the total energy requirements of cycling at constant power output." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30155.

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Steady-state cycling at constant power output can be achieved at any one of a number of cadences. Data have been published (Coast and Welch, 1985) that suggest riding at a particular cadence which minimizes oxygen uptake (VO₂) aids in achieving optimal performance. This cadence has been referred to as optimal. However, optimal cadences based solely on an indicator of aerobic metabolism (e.g. VO₂) fail to recognize any contributions made by anaerobic metabolism to the total energy costs of performing the work. The anaerobic contribution becomes particularly important at power outputs greater th

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Cooper, Haydn. "Two generator discrete groups of isometries and their representation : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Mathematics at Massey University, Albany, New Zealand." Massey University, 2008. http://hdl.handle.net/10179/973.

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Let M Φ and Mψ be elements of PSL(2,C) representing orientation preserving isometries on the upper half-space model of hyperbolic 3-space Φ and ψ respectively. The parameters β = tr2(M Φ) - 4, β1 = tr2(Mψ) - 4, γ = tr[M Φ,Mψ] - 2, determine the discrete group (Φ ,ψ) uniquely up to conjugacy whenever γ ≠ 0. This thesis is concerned with explicitly lifting this parameterisation of (Φ , ψ) to PSO(1, 3) realised as a discrete 2 generator subgroup of orientation preserving isometries on the hyperboloid model of hyperbolic 3-space. We particularly focus on the case where both Φ and ψ are ellipt

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González, Martirena Saúl. "A calorimetric measurement of the strong coupling constant in electron-positron annihilation at a center-of-mass energy of 91.6 GeV." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/28139.

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Martin, Sarah Friede. "Fluorescence resonance energy transfer studies of protein interactions." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/537.

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Szarek, Pawel. "Theoretical Study of Electronic States of Chemical Bonds." 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/66212.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第14161号<br>工博第2995号<br>新制||工||1444(附属図書館)<br>26467<br>UT51-2008-N478<br>京都大学大学院工学研究科マイクロエンジニアリング専攻<br>(主査)教授立花明知, 教授榊茂好, 教授木村健二<br>学位規則第4条第1項該当

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Hill, P. V. "A model insensitive determination of the strong coupling constant and a measurement of the energy spread of quark jets in electron positron annihilation." Thesis, University of Manchester, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379148.

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Jensen, Zachary R. "Improvements to the Two-Point In Situ Method for Measurement of the Room Constant and Sound Power in Semi-Reverberant Rooms." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/5724.

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The two-point in situ method is a technique for measuring the room constant of a semi-reverberant room and the sound power of a source in that room simultaneously using two measurement positions. Using a reference directivity source, where the directivity factor along any given axis of the source has been measured, one is able to use the Hopkins-Stryker equation to measure both the room constant and the sound power level of another source rather simply. Using both numerical and experimental data, it was found that by using generalized energy density (GED) as a measurement quantity, the resul

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Kollwitz, Jochanan. "Defining the Wake Decay Constant as a Function of Turbulence Intensity to Model Wake Losses in Onshore Wind Farms." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-306732.

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Modelling the wake effect generated by wind turbines is an essential part for calcu- lating a wind farm’s expected energy production. Operating wind turbines disturb the flow of the wind, which results in decreased production of downwind turbines. The N. O. Jensen model is an industry standard wake model that assumes a linear expansion of the downstream wake. The only adjustable parameter in the model is the wake decay constant (WDC), which has traditionally been derived semi em- pirically from terrain surface roughness. However, the WDC defines the expansion rate of the generated wake, and th

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Osorio, Gomez Laura Isabel. "Behavior of synthetic fiber-reinforced concrete circular columns under cyclic flexure and constant axial load." Mémoire, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/1435.

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La ductilité et la capacité à dissiper de l'énergie sont deux qualités très importantes pour les éléments structuraux des structures situées dans les régions sismiques comme l'est du Canada. Soulignons que Montréal occupe la deuxieme place en ce qui a trait au risque sismique au Canada. De plus, la réduction des coûts de maintenance des infrastructures est un sujet d'intérêt pour les propriétaries alors que ces derniers doivent en tout temps garantir la sécurité des usagers. Or, le béton renforcé avec des fibres synthétiques semble être un matériau qui remplit ces caractéristiques. Pourtant, s

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Maghsoodi, Soheib. "Thermo-mechanical behavior of soil-structure interface under monotonic and cyclic loads in the context of energy geostructures." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0031.

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L'incorporation d'échangeurs de chaleur dans des géostructures conventionnelles comme les pieux peut extraire la chaleur du sol à des fins de chauffage et l'injecter dans le sol à des fins de refroidissement. Ces dernières années, des recherches ont été menées à l'échelle réelle et en laboratoire pour étudier l'effet de la température sur le comportement géotechnique de ces géostructures énergétiques ainsi que sur le sol environnant. En effet, ces géostructures énergétiques peuvent être soumises à des charges mécaniques cycliques et a des variations thermiques tout au long de leur durée de vie

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Alanazi, Mohammed Awwad. "Non-invasive Method to Measure Energy Flow Rate in a Pipe." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/103179.

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Current methods for measuring energy flow rate in a pipe use a variety of invasive sensors, including temperature sensors, turbine flow meters, and vortex shedding devices. These systems are costly to buy and install. A new approach that uses non-invasive sensors that are easy to install and less expensive has been developed. A thermal interrogation method using heat flux and temperature measurements is used. A transient thermal model, lumped capacitance method LCM, before and during activation of an external heater provides estimates of the fluid heat transfer coefficient h and fluid temperat

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Eckhardt, Julian [Verfasser], Thorsten [Akademischer Betreuer] Hohage, Thorsten [Gutachter] Hohage, and Max [Gutachter] Wardetzky. "Bending energy regularization on shape spaces: a class of iterative methods on manifolds and applications to inverse obstacle problems / Julian Eckhardt ; Gutachter: Thorsten Hohage, Max Wardetzky ; Betreuer: Thorsten Hohage." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://d-nb.info/1201884586/34.

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Alfonso, Marco Salvatore. "Liquid carbon dispersions for energy applications." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0240/document.

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L'objectif de ce travail est de développer et d’étudier une nouvelle classe de fluidesintelligents à base de dispersions colloïdales de carbone, sensibles à un stimulus externe pour desapplications de conversion et stockage d’énergie. Ces stimuli sont de différentes natures : vibrationmécanique, mouvement humain, variation de pression ou écoulement d'un solvant, et peuventaltérer les structures de tels systèmes. Ceci induit une modification de la structure locale desparticules et par conséquent des propriétés diélectriques et électriques. Habituellement, lessuspensions de matériaux carbonés so

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Martin, Kirk Alan. "Site Specific Optimization of Rotor/Generator Sizing of Wind Turbines." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/13971.

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The optimum configuration of rotor-to-generator size for wind turbines is dependent upon the wind resource and is the configuration that produces the most electrical energy at a fixed capital cost. This optimization study held the combined cost of the rotor plus generator constant, but varied the respective sizes of the rotor and generator within this constraint. Total annual electrical energy was computed for each configuration at a series of wind resources each defined by a different Weibull probability distribution. In each case the configuration that produced the most electrical energy

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