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Robey, William Bud. "Implications for United States’ Military Strategy and Policy ofChina’s Asymmetric Anti-Satellite Capability." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420469689.
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Ahmed, Salman. "Topics in macro finance." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/271307.
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In terms of the specific topics covered in the thesis, my research aims to further understanding of risky asset return and volatility behaviour from a macro-finance perspective. In three of the four chapters, the macro drivers of both risky asset returns (the first moment) and volatility (the second moment) are studied and analyzed in detail across different geographies and various time periods. The use of both long sample sets and relevant sub-sample periods allows for a more in-depth assessment of the nature and form of these drivers as well as their influence on risky asset return and volatility dynamics, whilst weakening the impact of any endogeneity bias which the empirical estimation framework used may be subject to. The earliest data used in this research starts from the 18th century. In the first chapter, entitled “Macro Drivers of Equity Market Volatility”, the focus is on the construction and analysis of macro state variables, which are shown to have a strong influence on the behaviour of equity return volatility, especially during periods of severe market upheaval. Chapter two examines the relative abilities of GARCH and Stochastic Volatility Models (SV) to forecast volatility, in a world where the true model can be depicted by an EGARCH(1,2) formulation. Turning to chapter three, the relationship between equity returns and inflation (specifically, if equities are a hedge against inflation) is explored using long-term historical data for the US, the UK, Germany and Japan. Finally, chapter four analytically tackles the question of how various investors' (institutional and retail) asset allocation decisions are dependent on both the formulation of the wealth maximization function and the differentiated nature of information signals. Specifically, this chapter focusses on how asset allocation behaviour of various categories of investors (facing different objective functions) may lead to “herding”.
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[Verfasser], Suroso, and András [Akademischer Betreuer] Bárdossy. "Asymmetric dependence based spatial copula models : empirical investigations and consequences on precipitation fields / Suroso ; Betreuer: András Bárdossy." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2017. http://d-nb.info/1139709720/34.
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Werner, Katarzyna Maria. "Essays on non-expected utility theory and individual decision making under risk." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/essays-on-nonexpected-utility-theory-and-individual-decision-making-under-risk(e73bd3eb-8031-45f9-b34d-e5e9edb78e03).html.
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This thesis investigates the choices under risk in the framework of non-expected utility theories. One of the key contributions of this thesis is providing an approach that allows for a complete characterisation of Cumulative Prospect Theory (CPT) preferences without prior knowledge of the reference point. The location of the reference point that separates gains from losses is derived endogenously, thus, without any additional assumptions on the decision makers risk behaviour. This is different to the convention used in the literature, according to which, the reference point is preselected. The problem arising from imposing the location of the reference point is that the underlying preference conditions might not be alligned with the predictions made by the model. Consequently, it is difficult to verify such a model or to test it empirically. The present contribution offers a set of normatively and descriptively appealing preference conditions, which enable the elicitation of the reference point from the decision makers behaviour. Since these conditions are derived using objective probabilities, they can also be applied to settings such as health or insurance, where the continuity of the utility function is not required. As a result, the obtained representation theorem is not only the most general foundation for CPT currently available, but it also provides further support for the use of CPT as a modelling tool in decision theory and fi
nance. Another contribution that this thesis can be credited with is an application of rank-dependent utility theory (RDU) to the problem of insurance demand in the monopoly market affected by adverse selection. The present approach extends the classical model of Stiglitz (1977) by accounting for an additional component of heterogeneity among consumers, the heterogeneity in risk perception. Speci
fically, consumers employ distinctive probability weighting functions to assess the likelihood of risky events. This aspect of consumers' behaviour highlights the importance that the probabilistic risk attitudes within the RDU framework, such as optimism and pessimism, have for the choice of insurance contract. The analysis yields a separating equilibrium, with full insurance for a sufficiently pessimistic decision maker. An important implication of this result is that any low-risk individual who sufficiently overestimates his probability of loss will induce the uninformed insurer to o¤er him full coverage, thereby, affecting the high-risk type adversely. This outcome is consistent with the recent empirical puzzle regarding the correlation between ex-post risk and insurance coverage, according to which, agents with low exposure to risk receive a larger amount of compensation. By providing an explanation of this pattern of individual behaviour, the current work demonstrates that theory and practice of insurance demand can be reconciled to a greater extent. The paper also provides a behavioural rationale for policy intervention in the market with RDU agents, where the initial distortions in contracts due to unobservable risks are aggravated by the non-linear weighting of probability of a risky event.
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Aytekin, Tevfik. "A New Theory Of Content." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1138320/index.pdf.
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Naturalistic philosophers of meaning try to define the recalcitrant concept of reference in terms respected by the empirical science, such as causality or teleology. In this thesis, after a brief introduction to these trials is given, Fodors theory of content in terms of asymmetric dependence is examined in some depth. I claim that although this theory involves an important insight, it is an unsatisfactory attempt at reduction of the notion of reference. I develop a new theory of content, which does not have the defects of the analyses in terms of asymmetric dependence, and more successfully deals with notorious cases, such as pansemanticism and the possibility of misrepresentation.
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Silva, Filho Osvaldo Candido da. "Cópulas tempo-variantes em finanças." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/25771.
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A modelagem da estrutura de dependência é de grande importância em todos os ramos da economia onde há incerteza. Ela é um elemento crucial na análise de risco e para a tomada de decisão sob incerteza. As cópulas oferecem aos agentes que se deparam com este problema um poderoso e flexível instrumento para modelar a estrutura de dependência entre variáveis aleatórias e que é preferível ao instrumento tradicional baseado na correlação linear. Neste estudo, nós analisamos a dinâmica temporal da estrutura de dependência entre índices de mercados financeiros internacionais e propomos um novo procedimento para capturar a estrutura de dependência ao longo do tempo. Adicionalmente, estudamos alguns fatos estilizados sobre índices de mercados financeiros como a relação entre volume-volatilidade e retorno-volatilidade.Modelling dependence is of key importance to all economic fields in which uncertainty plays a large role. It is a crucial element of risk analysis and decision making under uncertainty. Copulas offer economic agents facing uncertainty a powerful and flexible tool to model dependence between random variables and often are preferable to the traditional, correlation-based approach. In this work we analyze the time dynamics of the dependence structure between broad stock market indices and propose a novel procedure to capture dependence structure over time. Additionally, we study some stylized facts about stock market indexes such as volume-volatility and return-volatility relations.
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Fiodendji, Komlan. "Monetary Policy, Asset Price and Economic Growth." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22725.
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The relations between monetary policies, asset prices, and economic growth are important and fundamental questions in macroeconomics. To address these issues, several empirical works have been conducted to investigate these relations. However, few of them have documented whether these relations differ across regimes. In this context, the general motivation of this thesis is to use dependent regime models to examine these relations for the Canadian case.
Chapter one empirically analyzes the interest rate behaviour of the Canadian monetary authorities by taking into account the asymmetry in the loss function. We employ a switching regime framework using two estimation strategies: First, we follow Caner and Hansen (2004) Threshold approach. Under this procedure we estimate the threshold values, using the Taylor empirical rules. Second, we estimate the asymmetric policy reaction function following Favero and Rovelli’s (2003) approach. The results reveal that the monetary authorities showed asymmetric preferences and that its reaction function can be better modeled with a nonlinear model. The main contribution of this chapter is to successfully interpret the parameters associated with the Bank of Canada preferences, something that Rodriguez (2008) could not do.
Chapter two tries to estimate the interest rate behaviour of the Canadian monetary authorities by expanding the arguments of the loss function for fluctuations in asset prices. Using the same methodology as in the first chapter, our findings suggest that the augmented nonlinear reaction function is a good fit for the data and gives new relevant insights into the influence of asset prices on Canadian monetary policy. These findings about the role of asset prices in the reaction function of the Bank of Canada provide relevant insights regarding the opportunities and limitations of incorporating financial indicators in monetary policy decision making. They also provide financial market participants, such as analysts, bankers and traders, with a better understanding of the impact of stock market index prices on Bank of Canada policy. Stock market stabilization plays a larger role in the interest rate decisions of the Bank of Canada than it is willing to admit.
Chapter three provides new evidence on the relation between inflation, relative price variability and economic growth to a panel of Canadian provinces over the period 1981-2008. We use the Bick and Nautz (2008) modified version of Hansen’s (1999) Panel Threshold Model. The evidence strongly supports the view that the relationship between inflation and economic growth is nonlinear. Further investigation suggests that relative price variability is one of the important channels through which inflation affects economic performance in Canadian provinces. When taking into account the cross-section dependence, we find that the critical threshold value slightly changes. It is desirable to keep the inflation rate in a moderate inflation regime because it may be helpful for the achievement of sustainable economic growth. The results seem to indicate that inflation that is too high or too low may have detrimental effects on economic growth.
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Tófoli, Paula Virgínia. "Ensaios em modelagem de dependência em séries financeiras multivariadas utilizando cópulas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/115528.
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O presente trabalho foi motivado pela forte demanda por modelos de dependência mais precisos e realistas para aplicações a dados financeiros multivariados. A recente crise financeira de 2007-2009 deixou claro quão importante é uma modelagem precisa da dependência para a avaliação correta do risco financeiro: percepções equivocadas sobre dependências extremas entre diferentes ativos foram um elemento importante da crise do subprime. O famoso teorema dc Sklar (1959) introduziu as cópulas como uma ferramenta para se modelar padrões de dependência mais sofisticados. Ele estabelece que qualquer função de distribuição conjunta ndimensional pode ser decomposta em suas n distribuições marginais e uma cópula, sendo que a última caracteriza completamente a dependência entre as variáveis. Enquanto existe uma variedade de famílias de cópulas bivariadas que podem descrever um amplo conjunto de dependências complexas, o conjunto de cópulas com dimensão mais elevada era bastante restrito até recentemente. Joe (1996) propôs uma construção de distribuições nmltivariadas baseada em pair-copulas (cópulas bivariadas), chamada pair-copula construction ou modelo de vine cópula, que reverteu esse problema. Nesta tese, desenvolvemos três ensaios que exploram a teoria de cópulas para obter modelos de dependência multivariados muito flexíveis para aplicações a dados financeiros. Patton (2006) estendeu o teorema de Sklar para o caso de distribuições condicionais e tornou o parâmetro de dependência da cópula variante no tempo. No primeiro ensaio, introduzimos um novo enfoque para modelar a dependência entre retornos financeiros internacionais ao longo do tempo, combinando cópulas; tempo-variantes e o modelo de mudança Markoviana. Aplicamos esses modelos de cópula e também os modelos propostos por Patton (2006), Jondeau e Rockinger (2006) e Silva Filho et al. (2012a) aos retornos dos índices FTSE 100, CAC 40 e DAX. Comparamos essas metodologias em termos das dinâmicas de dependência resultantes e das habilidades dos modelos em prever Valor em Risco (VaR). Interessantemente, todos os modelos identificam um longo período de alta dependência entre os retornos começando em 2007, quando a crise do subprime teve início oficialmente. Surpreendentemente, as cópulas elípticas mostram melhor desempenho na previsão dos quantis extremos dos retornos dos portfólios. No segundo ensaio, estendemos nosso estudo para o caso de n > 2 variáveis, usando o modelo de vine cópula para investigar a estrutura de dependência dos índices CAC 40, DAX, FTSE 100, S&P 500 e IBOVESPA, e, particularmente, checar a hipótese de dependência assimétrica nesse caso. Com base em nossos resultados empíricos, entretanto, essa hipótese não pode ser verificada. Talvez a dependência assimétrica com caudas inferiores mais fortes ocorra apenas temporariamente, o que sugere que a incorporação de variação temporal ao modelo de vine cópula pode melhorá-lo como ferramenta para modelar dados financeiros internacionais multivariados. Desta forma, no terceiro ensaio, introduzimos dinâmica no modelo de vine cópula permitindo que os parâmetros de dependência das pair-copulas em uma decomposição D-vine sejam potencialmente variantes no tempo, seguindo um processo ARMA(l,m) restrito como em Patton (2006). O modelo proposto é avaliado em simulações e também com respeito à acurácia das previsões de Valor em Risco (VaR) em períodos de crise. Os experimentos de Monte Cailo são bastante favoráveis à cópula D-vine dinâmica em comparação a uma cópula D-vine estática. Adicionalmente, a cópula D-vine dinâmica supera a cópula D-vine estática em termos de acurária preditiva para os nossos conjuntos de dadosThis work was motivated by the strong demand for more precise and realistic dependence models for applications to multivariate financial data. The recent financial crisis of 2007-2009 has made it clear how important is a precise modeling of dependence for the accurate assessment of financial risk: misperceptions about extreme dependencies between different financial assets were an important element of the subprime crisis. The famous theorem by Sklar (1959) introduced the copulas as a tool to model more intricate patterns of dependence. It states that any n-dimensional joint distribution function can be decomposed into its n marginal distributions and a copula, where the latter completely characterizes the dependence among the variables. While there is a variety of bivariate copula families, which can match a wide range of complex dependencies, the set of higher-dimensional copulas was quite restricted until recently. Joe (1996) proposed a construction of multivariate distributions based on pair-copulas (bivariate copulas), called pair-copula construction or vine copula model, that has overcome this issue. In this thesis, we develop three papers that explore the copula theory in order to obtain very flexible multivariate dependence rnodels for applications to financial data. Patton (2006) extended Sklar's theorem to the conditional case and rendered the dependence parameter of the copula time-varying. In the first paper, we introduce a new approach to modeling dependence between International financial returns over time, combining time-varying copulas and the Markov switching model. We apply these copula models and also those proposed by Patton (2006), Jondeau and Rockinger (2006) and Silva Filho et al. (2012a) to the return data of FTSE 100, CAC 40 and DAX indexes. We compare these methodologies in terms of the resulting dynamics of dependence and the models' abilities to forecast Value-at-Risk (VaR). Interestingly, ali the models identify a long period of high dependence between the returns beginning in 2007, when the subprime crisis was evolving. Surprisingly, the elhptical copulas perform best in forecasting the extreme quantiles of the portfolios returns. In the second paper, we extend our study to the case of n > 2 variables, using the vine copula model to investigate the dependence structure of the broad stock market indexes CAC 40, DAX, FTSE 100, S&P 500 and IBOVESPA, and, particularly, check the asymmetric dependence hypothesis in this case. Based on our empirical results, however, this hypothesis cannot be verified. Perhaps, asymmetric dependence with stronger lower tails occurs only temporarily, what suggests that incorporating time variation into the vine copula rnodel can improve it as a tool to rnodel multivariate International financial data. So, in the third paper, we introduce dynamics into the vine copula model by allowing the dependence parameters of the pair-copulas in a D-vine decomposition to be potentially timevarying, following a nonlinear restricted ARMA(l,m) process as in Patton (2006). The proposed model is evaluated in simulations and further assessed with respect to the accuracy of Value-at- Risk (VaR) forecasts in crisis periods. The Monte Cario experiments are quite favorable to the dynamic D-vine copula in comparison with a static D-vine copula. Moreover, the dynamic Dvine copula outperforms the static D-vine copula in terms of predictive accuracy for our data sets.
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Jong, Simon Barend de. "Asymmetry in task dependence among team members." [S.l. : Groningen : s.n. ; University Library of Groningen] [Host], 2008. http://irs.ub.rug.nl/ppn/305748580.
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Menguturk, Levent Ali. "Information-based jumps, asymmetry and dependence in financial modelling." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/10953.
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In mathematical finance, economies are often presented with the specification of a probability space equipped with a filtration that encodes information flow. The information-based framework of Brody, Hughston and Macrina (BHM) emphasises the role of market information in deriving asset price dynamics, instead of assuming price behaviour from the start. We extend the BHM framework by (i) modelling the nature of access to information through information blockages and activations of new information sources, and (ii) introducing a new class of multivariate Markov processes that we call Generalised Liouville Processes (GLPs) which can model the flow of information about vectors of assets. The analysis of access to information allows us to derive price dynamics with jumps. It additionally enables us to develop an information-switching framework, and price derivatives under regime-switching economies. We also indicate some geometrical aspects of appearances of new information sources. We represent information jumps on the unit sphere in the Hilbert space of square-integrable functions, and on hyperbolic spaces. We use differential geometry, information theory and what we call n-order piecewise enlargements of filtrations to dynamically quantify the impact of sudden changes in the sources of information. This helps us to model the stochastic evolution of what may be viewed as information asymmetry. In related work, we construct GLPs on finite time horizons by splitting so-called Levy random bridges into non-overlapping subprocesses. The terminal values of GLPs have generalised multivariate Liouville distributions, and GLPs can model a wide spectrum of information-driven dependence structures between assets. The law of an n-dimensional GLP under an equivalent measure is that of an n-vector of independent Levy processes. We focus on a special type of GLPs that we call Archimedean Survival Processes (ASPs). The terminal value of an ASP has an [Symbol appears here. To view, please open pdf attachment] 1-norm symmetric distribution, and hence, an Archimedean survival copula.
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Jones, Konnor. "Temperature and Electric Field Dependency of Asymmetric Stretching of Nitrate and Carbonate Ions." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/2804.
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Photolysis of nitrate ion in the natural environment produces NO, NO2, and O3, releasing these toxic gases into the atmosphere. Work done by other groups has shown ionic strength dependence of the ratio of products from photolysis of aqueous nitrate ion. To better understand the kinetic mechanisms of nitrate photolysis, the effects that ionic strength in solution have on nitrate ion symmetry breaking are needed. Different solvation environments induce nitrate bonding motifs that may be correlated to the product ratio. Fourier-transform infrared spectra of aqueous nitrate–ion solutions were obtained over a range of temperatures for several total electrolyte concentrations. The electric fields (arising from water molecules and ions in solution) in aqueous potassium nitrate solution distort the trigonal planar shape of the nitrate ion, which may favor a specific initial path of the decomposition of nitrate during photolysis. Van’t Hoff plots of the relative peak areas corresponding to the formally-degenerate asymmetric stretching mode reveal the relative energies of the two solvation geometries. The difference in energy between the two geometries is linearly proportional to the ionic strength of the solution. Electronic structure calculations suggest that the more symmetric geometry has an increased stability relative to the less-symmetric geometry in high ionic strength solutions. Thus, the relative amounts of the nitrate ion solvation geometries can be correlated to the amount of products produced during photolysis to help explain the ionic-strength dependence of the product yields. Nitrate geometries at the water—CCl4 interface and aqueous carbonate ion bonding motifs are being investigated to identify pure-water effects. Preliminary results suggest that the more symmetric geometry nitrate is stabilized at the water—CCl4 interface and the lesssymmetric carbonate solvation geometry has an increased stability relative to the more symmetric geometry in high ionic strength solutions.
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Lee, Jae Min. "Households Saving and Reference Dependent Changes in Income and Uncertainty." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1408967943.
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Kainth, Haresh S. "A data dependency recovery system for a heterogeneous multicore processor." Thesis, University of Derby, 2014. http://hdl.handle.net/10545/313343.
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Multicore processors often increase the performance of applications. However, with their deeper pipelining, they have proven increasingly difficult to improve. In an attempt to deliver enhanced performance at lower power requirements, semiconductor microprocessor manufacturers have progressively utilised chip-multicore processors. Existing research has utilised a very common technique known as thread-level speculation. This technique attempts to compute results before the actual result is known. However, thread-level speculation impacts operation latency, circuit timing, confounds data cache behaviour and code generation in the compiler. We describe an software framework codenamed Lyuba that handles low-level data hazards and automatically recovers the application from data hazards without programmer and speculation intervention for an asymmetric chip-multicore processor. The problem of determining correct execution of multiple threads when data hazards occur on conventional symmetrical chip-multicore processors is a significant and on-going challenge. However, there has been very little focus on the use of asymmetrical (heterogeneous) processors with applications that have complex data dependencies. The purpose of this thesis is to: (i) define the development of a software framework for an asymmetric (heterogeneous) chip-multicore processor; (ii) present an optimal software control of hardware for distributed processing and recovery from violations;(iii) provides performance results of five applications using three datasets. Applications with a small dataset showed an improvement of 17% and a larger dataset showed an improvement of 16% giving overall 11% improvement in performance.
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Ruinatscha, Reto. "Asymmetric biocatalytic epoxidation in a scalable electrochemical reactor using FAD dependent styrene monooxygenase." Aachen Shaker, 2009. http://d-nb.info/1000544044/04.
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Zohrabyan, Tatevik. "Essays on time series and causality analysis in financial markets." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3093.
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Ruinatscha, Reto [Verfasser]. "Asymmetric Biocatalytic Epoxidation in a Scalable Electrochemical Reactor Using FAD-Dependent Styrene Monooxygenase / Reto Ruinatscha." Aachen : Shaker, 2010. http://d-nb.info/1124365605/34.
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Ushiroda, Y., K. Sumisawa, N. Taniguchi, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, et al. "Time-Dependent CP-Violating Asymmetry in B^0→p^0γ Decays." American Physical Society, 2008. http://hdl.handle.net/2237/11350.
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Ekman, Sofie, and Rita Razifar. "Power Division in Strategic Alliances : How to be Successful despite Power Asymmetry." Thesis, Linköping University, Department of Management and Economics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2825.
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Background: In resent years, the number of alliances has increased rapidly. Through collaborating with other firms, companies hope to gain certain benefits that they cannot reach on their own. However, the division of power in strategic alliances can be asymmetric, endangering the achievement of goals and objectives in the alliance for the less influential party.
Purpose: The purpose of this thesis is to identify success factors for companies with less influence and power than their collaboration partner/s in a strategic alliance.
Delimitation: This study concerns strategic alliances characterised by one party making an equity investment in the other party. The study is, furthermore, conducted from the perspective of the less influential party with relatively less power in the alliance.
Realisation: A case study was conducted based on six interviews and a questionnaire among employees at the mobile operator Swisscom Mobile. The company is involved in a strategic alliance with Vodafone and is part of the world leading Vodafone Group.
Results: The main findings of this thesis show that power asymmetry in an alliance originates from factors both on a dyadic level and on a network level and that these levels affect each other. Companies with a weaker power position must strive for counteracting the existing power asymmetry in order to secure their goals and objectives in the alliance. This study shows that this can be achieved through, for instance, partly having different goals than the partner/s, increasing the dependence of the partner/s on the own resources, absorbing information and know-how and learning from the partner/s, building trust in the relationship through personal contacts and safeguarding goals and objectives through a written contract and “economic hostage”.
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Düwel, Sabine [Verfasser], and Sabrina [Akademischer Betreuer] Höbenreich. "Directed Evolution of an Fe(II)-Dependent Halogenase for Asymmetric C(sp3)-H Chlorination / Sabine Düwel ; Betreuer: Sabrina Höbenreich." Marburg : Philipps-Universität Marburg, 2019. http://d-nb.info/1201481333/34.
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Maria, Robert Daniel. "Study of the time-dependent CP asymmetry in D° decays in the Belle II experiment." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAE034/document.
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Nous étudions la sensibilité de Belle II avec 50 ab-1 de données sur l'angle βc du triangle d'unitarité, avec une mesure en fonction du temps de l'asymétrie de CP dans les désintégrations des mésons D0. Nous montrons que cette mesure est limitée statistiquement, avec une incertitude totale attendue de l'ordre de 3°. La mesure de βc nécessite la reconstruction de trajectoires de particules de très faible impulsion, impactée par le bruit de fond induit par SuperKEKB. Deux échelles PLUME vont être utilisées pour étudier ce bruit de fond. Ici, une étude des performances de PLUME est effectuée. Ainsi, la résolution spatiale avec des traces à 0° et 36° est mesurée, de 1,8 µm et 3,5µm respectivement. Par ailleurs nous proposons d'améliorer la mesure des faibles impulsions en utilisant la charge déposée par la particule dans le trajectomètre interne au silicium. L'estimateur permet d'améliorer par 2% la résolution sur l'impulsion pour les particules n'atteignant pas le trajectomètre interneWe are studying the sensitivity of Belle II with 50 ab-1 data to the βc angle of the c-u unitarity triangle, with a time-dependent measurement of the CP asymmetry in the D0 decays. We show that such a measurement is still statistically limited, with a total expected incertitude of 3°.This measurement relies on the reconstruction of soft momenta, impacted by the SuperKEKB induced background.Two PLUME ladders will be used to study this background, therefore a study on the performances of PLUME was performed. The spatial resolution is of 1.8 µm and 3.5 µm for 0° and 36° tilted tracks respectivelly.We also propose to improve the estimation of soft momenta using the energy depositions of charged particles in the silicon layers of the inner tracker. Our estimator improves by approximately 2 % the resolution on momentum for particles which do not penetrate the central tracking system
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Hansen, Jens-Ole 1965. "A measurement of spin-dependent asymmetries in quasielastic scattering of polarized electrons from polarized helium-3." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/32634.
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Iggesen, Oliver A. "Case-asymmetry : a world-wide typological study on lexeme-class-dependent deviations in morphological case inventories /." Muenchen : Lincom Europa, 2005. http://catalogue.bnf.fr/ark:/12148/cb40028603h.
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Adkins, James Kevin. "STUDYING TRANSVERSE MOMENTUM DEPENDENT DISTRIBUTIONS IN POLARIZED PROTON COLLISIONS VIA AZIMUTHAL SINGLE SPIN ASYMMETRIES OF CHARGED PIONS IN JETS." UKnowledge, 2017. http://uknowledge.uky.edu/physastron_etds/47.
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A complete, fundamental understanding of the proton must include knowledge of the underlying spin structure. The transversity distribution, h1(x), which describes the transverse spin structure of quarks inside of a transversely polarized proton, is only accessible through channels that couple h1(x) to another chiral odd distribution, such as the Collins fragmentation function (ΔN Dπ/q↑(z,jT)). Significant Collins asymmetries of charged pions have been observed in semi-inclusive deep inelastic scattering (SIDIS) data. These SIDIS asymmetries combined with e+e- process asymmetries have allowed for the extraction of h1(x) and ΔN Dπ/q↑(z,jT). However, the current uncertainties on h1(x) are large compared to the corresponding quark momentum and helicity distributions and reflect the limited statistics and kinematic reach of the available data. In transversely polarized hadronic collisions, Collins asymmetries may be isolated and extracted by measuring the spin dependent azimuthal distributions of charged pions in jets. This thesis will report on the first statistically significant Collins asymmetries extracted from √ s = 200 GeV hadronic collisions using 14 pb-1 of transversely polarized proton collisions at 57% average polarization.
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Tekin, Josef, and Jens Hagman. "Oil Dependencies and Peak Oil's Effects on Oil Consumption : A case study of six countries." Thesis, Jönköping University, JIBS, Economics, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-1057.
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During the year of 2007, the world has experienced historically high oil prices both in nominal and in real terms, which has reopened discussions about energy sustainability. We therefore found it interesting to research oil dependencies and elasticities for Brazil, China, Norway, South Korea, Sweden and USA; and their possible oil consumption response to a Peak Oil phenomenon. Peak Oil in this thesis, implies that oil production will reach its climax and decline thereafter. To help draw conclusions, appropriate statistical analysis on macroeconomic variables was used as well as the modified Nerlove’s partial adjustment equation to calculate price and income elasticities both in the short and long-run. Regression results have shown that short-run price elasticities were low in all countries; in addition income elasticities were also inelastic but more elastic in relation to oil price elasticities. This indicates that oil consumption is more sensitive to changes in income than to changes in oil price. It was concluded that oil dependencies among nations differ and the trend is that developing countries are increasing their oil dependency while developed countries tend to decrease their oil dependency over time. Peak Oil will lead to higher oil prices, which in the short-run will change developing countries oil consumption to a greater extent than developed countries, but in the long-run their response are more similar. It was also noticed, that when GDP decreases in net-oil-importing countries, oil consumption will decrease even further. The opposite could be true for net-oil-exporting countries like Norway and Brazil.
Under år 2007 har världen upplevt historiskt höga oljepriser, både i nominella och reala termer, vilket återigen har lyft upp energiförsörjningen på agendan. Vi fann det därför intressant att undersöka oljeberoenden i Brasilien, Kina, Norge, Sydkorea, Sverige, USA och se hur dessa länders oljekonsumption kan påverkas av Peak Oil. Peak oil betyder att oljeproduktionen når sitt maximum och minskar därefter. För att kunna dra slutsatser har lämpliga statistiska verktyg använts på olika makroekonomiska variabler och applicerat ”Nerlove’s partial adjustment model” på data har pris-och inkomstelasticiteten av olja i varje land både på kort och lång sikt kunnat utvinnas. Från regressionen har framträtt; priselasticiteten var låg på kort sikt i alla länder och detta gäller även för inkomstelasticiteten, dock var inkomstelasticiteten relativt mer elastisk i alla länder. Detta indikerar att oljekonsumtionen är mer känslig för förändringar i inkomst än för förändringar i pris. Slutsatsen från studien är att olika länder har olika nivåer av oljeberoende och att utvecklingsländer tenderar att öka sitt relativa oljeberoende över tid medan de industrialiserade länderna tenderar att minska sitt relativa oljeberoende över tid. Peak Oil leder till högre oljepriser vilket på kort sikt kommer att påverka utvecklingsländernas oljekonsumtion mer än de industrialiserade ländernas, dock minskar skillnaden på lång sikt. En observering från denna forskning är att när BNP minskar hos olje-importörerna kommer även oljekonsumtionen att minska. För oljeexportörer som Brasilien och Norge kan oljekonsumptionen öka när BNP inkomsterna ökar från Peak Oil.
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Ellersgaard, Holm Kathrine. "The Endurance of an Asymmetrical Alliance - A Case Study of the U.S.-Saudi Alliance." Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-23126.
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Despite that alliance formation commonly happen when states share mutual interests and like-mindedness, it is possible to find alliances, where the states promote radically different political, normative, and cultural characteristics. Such an alliance is observed in the case of Saudi Arabia and the United States, which subsequently have endured. The following research will thus elaborate on how the Saudi-American alliance have endured throughout, despite their radical differences. To examine the endurance of the Saudi-American alliance, this research has conducted a case study and used Walter Carlsnaes Foreign Policy model. The research has concludingly found that the alliance has endured due to a variety of factors such as economic trade, regional instability, and security, that consistently has persisted throughout. Despite the American role as a hegemon and the changing administrations throughout the endurance, it has been argued that the longevity of the relation has contributed to the consistency of the factors mentioned above. This is evident in the unpredictability in terms of the region, instability, and insecurity that opposes threats to the U.S., and economic trade relations which have discouraged the U.S. from leaving the alliance.
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Dalseno, J., I. Adachi, H. Aihara, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, et al. "Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^*+D^*-K^{0}_{S}decays." American Physical Society, 2007. http://hdl.handle.net/2237/11354.
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Zagrebelnyy, V. [Verfasser]. "Investigation of transverse-momentum-dependent functions(TMD) in azimuthal spin asymmetries of semi-inclusive deep inelastic nucleon scattering / Vitaly Zagrebelnyy." Gießen : Universitätsbibliothek, 2015. http://d-nb.info/1069740691/34.
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Yao, Liming. "Modeling, Analysis and Solution Approaches for Some Optimization Problems: High Multiplicity Asymmetric Traveling Salesman, Primary Pharmaceutical Manufacturing Scheduling, and Lot Streaming in an Assembly System." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/27961.
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This dissertation is devoted to the modeling, analysis and development of solution approaches for some optimization-related problems encountered in industrial and manufacturing settings. We begin by introducing a special type of traveling salesman problem called "High Multiplicity Asymmetric Traveling Salesman Problem" (HMATSP). We propose a new formulation for this problem, which embraces a flow-based subtour elimination structure, and establish its validity for this problem. The model is, then, incorporated as a substructure in our formulation for a lot-sizing problem involving parallel machines and sequence-dependent setup costs, also known as the "Chesapeake Problem". Computational results are presented to demonstrate the efficacy of our modeling approach for both the generic HMATSP and its application within the context of the Chesapeake Problem.
Next, we investigate an integrated lot-sizing and scheduling problem that is encountered in the primary manufacturing facility of pharmaceutical manufacturing. This problem entails determination of production lot sizes of multiple products and sequence in which to process the products on machines, which can process lots (batches) of a fixed size (due to limited capacity of containers) in the presence of sequence-dependent setup times/costs. We approach this problem via a two-stage optimization procedure. The lot-sizing decision is considered at stage 1 followed by the sequencing of production lots at stage 2. Our aim for the stage 1 problem is to allocate batches of products to time-periods in order to minimize the sum of the inventory and backordering costs subject to the available capacity in each period. The consideration of batches of final products, in addition to those for intermediate products, which comprise a final product, further complicates the lot-sizing problem. The objective for the stage 2 problem is to minimize sequence-dependent setup costs. We present a novel unifying model and a column generation-based optimization approach for this class of lot-sizing and sequencing problems. Computational experience is first provided by using randomly generated data sets to test the performances of several variants of our proposed approach. The efficacy of the best of these variants is further demonstrated by applying it to the real-life data collected with the collaboration of a pharmaceutical manufacturing company.
Then, we address a single-lot, lot streaming problem for a two-stage assembly system. This assembly system is different from the traditional flow shop configuration. It consists of m parallel subassembly machines at stage 1, each of which is devoted to the production of a component. A single assembly machine at stage 2, then, assembles products after components (one each from the subassembly machines at the first stage) have been completed. Lot-detached setups are encountered on the machines at the first and second stages. Given a fixed number of transfer batches (or sublots) from each of the subassembly machines at stage 1 to the assembly machine at stage 2, our problem is to find sublot sizes so as to minimize the makespan. We develop optimality conditions to determine sublot sizes for the general problem, and present polynomial-time algorithms to determine optimal sublot sizes for the assembly system with two and three subassembly machines at stage 1.
Finally, we extend the above single-lot, lot streaming problem for the two-stage assembly system to multiple lots, but still, for the objective of minimizing the makespan. Due to the presence of multiple lots, we need to address the issue of the sequencing of the lots along with lot-splitting, a fact which adds complexity to the problem. Some results derived for the single-lot version of this problem have successfully been generalized for this case. We develop a branch-and-bound-based methodology for this problem. It relies on effective lower bounds and dominance properties, which are also derived. Finally, we present results of computational experimentation to demonstrate the effectiveness of our branch-and-bound-based methodology. Because of the tightness of our upper and lower bounds, a vast majority of the problems can be solved to optimality at root node itself, while for others, the average gap between the upper and lower bounds computed at node zero is within 0.0001%. For a majority of these problems, our dominance properties, then, effectively truncate the branch-and-bound tree, and obtain optimal solution within 500 seconds.Ph. D.
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Wellenhofer, Corbinian [Verfasser], Norbert [Akademischer Betreuer] [Gutachter] Kaiser, and Andreas [Gutachter] Weiler. "Isospin-Asymmetry Dependence of the Thermodynamic Nuclear Equation of State in Many-Body Perturbation Theory / Corbinian Wellenhofer ; Gutachter: Norbert Kaiser, Andreas Weiler ; Betreuer: Norbert Kaiser." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1136718893/34.
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Ritter, Martin. "Measurement of the branching fraction and time dependent CP asymmetry in B0⟶D*-D*+K0s decays at the belle experiment." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-172823.
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Why do we exist? CP violation is an integral part of this question as its understanding is crucial to explain the matter-antimatter asymmetry observed in our universe. Several experiments were designed and carried out to precisely measure CP violation, especially in the B meson system where large asymmetries where predicted and found. With Belle II and LHCb, two new experiments are going to improve the existing measurements. Belle II will be based on the very successful Belle experiment at the KEKB collider, currently
holding the world record on luminosity with 2.11×10³⁴ cm⁻²2s⁻¹.
The B meson system has a very rich decay topology and many of theses decay modes and their CP asymmetry parameters have already been measured at Belle. The most famous decay channel, B0⟶J/ψK0s, poses very tight constraints on sin 2φ₁ but leaves a twofold ambiguity on the actual value of the angle φ₁ in the CKM triangle. The decay mode B0⟶D*-D*+K0s, while experimentally much more challenging, offers the unique possibility to also extract cos2φ₁ and thus resolve this ambiguity.
In the first chapters of this thesis we present the principle of this measurement and the results for the branching fraction and the time-dependent CP violation parameters of B0⟶D*-D*+K0s decays. These results are obtained from the final data sample of the Belle experiment containing 772 million BBbar pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.
We obtain the branching fraction BR(B0⟶D*-D*+K0s) = (5.35+0.35−0.34(stat) ± 0.57(syst))×10⁻³, which is in agreement with the current world average. In a 3 parameter fit sensitive to cos2φ₁, we extract the currently most precise values for the CP parameters
Jc/J0 = 0.37 ± 0.10(stat) ± 0.02(syst), (2Js1/J0) sin(2φ₁) = 0.30 ± 0.16(stat) ± 0.03(syst), (2Js2/J0) cos(2φ₁) = 0.16 ± 0.16(stat) ± 0.03(syst). This allows us to exclude a negative value for cos2φ₁ at a 85% confidence under the assumption that that (2Js2/J0) is positive.
Finally, we describe the implementation of the vertex detector geometry for the upcoming Belle II experiment. The upgrade to Belle aims to increase the integrated luminosity by a factor of 50 and will receive, among other upgrades, a completely new vertex detector. To produce simulated events, a precise description of the sensor geometry and material budget is needed.
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Sitt, Simon. "Time-dependent analysis and amplitude analysis of B0 ! K0s K0s K0s decays with the BABAR experiment." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2010. http://tel.archives-ouvertes.fr/tel-00558768.
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Deux analyses indépendantes du canal de désintegration B0 ! K0s K0s K0s ont été effectuées, utilisant un échantillon de 468 millions de paires B¯B enregistrées par le détecteur BABAR auprès de l'usine à B PEP-II à SLAC National Laboratory. La première analyse est dépendant du temps et integrée sur l'espace de phase. Son but est d'extraire simultanément des deux sous-canaux B0 ! 3K0s (¼+¼−) et B0 ! 2K0s (¼+¼−)K0s (¼0¼0), les paramètres S et C de violation de CP. Il est intéressant de comparer les valeurs mesurées avec les mesures des modes charmonium. Le résultat obtenu est • S = −0.94+0.24 −0.21 ± 0.06 • C = −0.17+0.18 −0.18 ± 0.04 , où la première incertitude est statistique et la deuxième est systématique. Ce résultat est compatible avec la prédiction du modèle standard et les mesures des modes charmonium. La deuxième analyse est une analyse en amplitude (ou dans le plan de Dalitz). Elle est intégrée sur le temps. Son but est d'extraire le rapport de branchement total, ainsi que les rapports de branchement des modes résonnants partiels. C'est la première fois que cette analyse est effectuée pour le canal étudié. Le résultat est • B(B0 ! K0s K0s K0s ) = (6.18 ± 0.47 ± 0.14 ± 0.06) × 10−6 • B(B0 ! f0(980)K0s ; f0(980) ! K0s K0s ) = (2.69+1.25 −1.18 ± 0.35 ± 1.87) × 10−6 • B(B0 ! f0(1710)K0s ; f0(1710) ! K0s K0s ) = (0.50+0.46 −0.23 ± 0.04 ± 0.12) × 10−6 • B(B0 ! f2(2010)K0s ; f2(2010) ! K0s K0s ) = (0.54+0.21 −0.20 ± 0.03 ± 0.44) × 10−6 • B(B0 ! Nonresonant; K0s K0s K0s) = (13.31+2.23 −2.30 ± 0.55 ± 2.77) × 10−6 • B(B0 ! Âc0K0s ; Âc0 ! K0s K0s) = (0.46+0.25 −0.16 ± 0.01 ± 0.19) × 10−6 , où la première incertitude est statistique, la deuxième est systématique et la troisième est liée au modèle de l'amplitude. Aucun signal statistiquement significatif de la résonance controversée fX(1500) n'a été observé. dumm
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Xiong, Feng 1976. "Precision measurement of the spin-dependent asymmetry in the threshold region of quasielastic ³He [right arrow] (e [right arrow], e)Ì." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29304.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2002.In title on t.p., "[right arrow]" appears as the symbol and appears above the preceding letter(s).
Includes bibliographical references (p. 173-178).
The first precision measurement of the spin-dependent asymmetry in the threshold region of 3He(e, e') was carried out in Hall A at the Jefferson Laboratory, using a longitudinally polarized continuous wave electron beam incident on a high-pressure polarized 3He gas target. The polarized electron beam was generated by illuminating a strained GaAs cathode with high intensity circularly polarized laser light, and an average beam polarization of about 70% was achieved. The 3He target was polarized based on the principle of spin-exchange optical pumping and the average target polarization was about 30%. The scattered electrons were detected in the two Hall A high resolution spectrometers, HRSe and HRSh. The data from HRSh were used for this analysis and covered both the elastic peak and the threshold region. Two kinematic points were measured in the threshold region, one with a central Q2-value of 0.1 (GeV/c)2 at an incident beam energy E0 = 0.778 GeV and the other with a central Q2-value of 0.2 (GeV/c)2 at Eo = 1.727 GeV. The average beam current was 10 tpA, which was mainly due to the limitation of the polarized 3He target. The measured asymmetry was compared with both plane wave impulse approximation (PWIA) calculations and non-relativistic full Faddeev calculations which include both final-state interactions (FSIs) and meson-exchange currents (MECs) effects. The poor description of the data by PWIA calculations at both Q2-values suggests the existence of strong FSI and MEC effects in the threshold region of 3He(e', e'). Indeed, the agreement between the data and full calculations is very good at Q2 = 0.1 (GeV/c)2.
(cont.) On the other hand, a small discrepancy at Q2 = 0.2 (GeV/c)2 is observed, which might be due to some Q2-dependent effects such as relativity and three-nucleon forces (3NFs), which are not included in the framework of non-relativistic Faddeev calculations. Some preliminary results show that 3NF effects are indeed non-negligible in the threshold region and more theoretical work is currently underway towards a better understanding of both effects. With the recent development and success of the chiral perturbation theory, it is hopeful that a future application of the resulting chiral NN forces to electrodisintegration of 3He might solve the present discrepancy.
by Feng Xiong.
Ph.D.
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Saul, Heiko Verfasser], Bastian [Akademischer Betreuer] Märkisch, Hartmut [Akademischer Betreuer] [Abele, Bastian [Gutachter] Märkisch, Werner [Gutachter] Heil, Jochen [Gutachter] Schieck, Lothar [Gutachter] Oberauer, and Hartmut [Gutachter] Abele. "Energy Dependence of the Beta Asymmetry in Neutron Beta Decay / Heiko Saul ; Gutachter: Bastian Märkisch, Werner Heil, Jochen Schieck, Lothar Oberauer, Hartmut Abele ; Bastian Märkisch, Hartmut Abele." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1187917362/34.
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Bahinipati, Seema. "Measurement of time-dependent CP asymmetries in the decays B → D*π using a partial reconstruction technique." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1196091446.
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FINOCCHIARO, ROBERTA. "Meccanismi di ricompensa e lateralizzazione inter-emisferica nei processi decisionali: componenti motivazionali e la vulnerabilità a comportamenti di dipendenza." Doctoral thesis, Università Cattolica del Sacro Cuore, 2017. http://hdl.handle.net/10280/17221.
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Lo scopo della presenta ricerca è analizzare il ruolo del sistema di ricompensa in relazione al costrutto BIS/BAS (Behavioural Inhibition System/ Behavioural Activation System) in un contesto sano e di dipendenza da sostanza. Il lavoro ha inoltre esplorato l'asimmetria cerebrale frontale nelle scelte decisionali che implicano stimoli di ricompensa e condizioni punizione. I risultati hanno confermato l'ipotesi di un anomalia del sistema di ricompensa in individui con alto BAS e in pazienti con dipendenza da sostanza, che sovrastimavano la ricompensa immediata a scapito di quella a lungo termine durante l’Iowa Gambling Task. Un’altra componente cruciale emersa da questo progetto è una iper-attivazione del lobo frontale di sinistra rispetto a quello di destra in risposta alle opzioni più rischiose. Questo "effetto di sbilanciamento inter-emisferico” potrebbe essere considerato come un indicatore critico del comportamento decisionale disfunzionale nella dipendenza o come fattore di vulnerabilità allo sviluppo di dipendenze. Infine, questo "modello di squilibrio corticale" è stato applicato ad altre forme di dipendenza comportamentale, misurate con l’Internet Addiction Test (IAT). In effetti, un aumento dell'attività frontale di sinistra è stata osservata per gli individui ad alto IAT in risposta a stimoli premianti. In particolare, i risultati ottenuti sottolineano l'importanza di un modello integrato di dipendenza che tiene conto del sistema motivazionale (BIS/BAS) correlato alla lateralizzazione dell'attività corticale.The aim of this PhD research was intended to analyze the role of the reward system by the BIS/BAS (Behavioural Inhibition System/ Behavioural Activation System) construct in healthy and addiction context. It explored the frontal brain asymmetry in decisional choices implying reward stimuli and punishment conditions. Results confirmed the hypothesis of a “reward bias” induced by high-BAS individuals and patients suffering from Substance Use Disorder (SUD) to overestimate the immediate reward to the detriment of the delayed reward during the Iowa Gambling Task. Another critical component is the frontal left-hyper activation of the brain in response to more risky options. This "inter-hemisphere" unbalancing effect can be considered as a critical indicator of the dysfunctional decision behavior in dependence or as a vulnerability factor to the development of addiction. Finally, this “cortical imbalance model” was applied to other forms of behavioural addiction, measured by the Internet Addiction Test (IAT). Indeed, an increased left frontal activity was observed for high-IAT individuals in response to rewarding stimuli. In particular, the results underlined the importance of an integrated model of addiction that takes into account the motivational system (BIS / BAS) related to the lateralization of cortical activity.
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Ritter, Martin [Verfasser], and Christian [Akademischer Betreuer] Kiesling. "Measurement of the branching fraction and time dependent CP asymmetry in B0→D*-D*+K0s decays at the belle experiment / Martin Ritter. Betreuer: Christian Kiesling." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1058077066/34.
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Omowunmi, Sunday Chima. "Modelling the nonlinear dynamics of polymer solutions in complex flows." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/modelling-the-nonlinear-dynamics-of-polymer-solutions-in-complex-flows(3230a688-0ea4-4620-bda1-396346feb645).html.
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The flow of polymer solutions in the high Elasticity number, El, regime in complex geometries may lead to strong viscoelastic behaviour and eventually become unstable as the Weissenberg number, Wi, is increased beyond a critical level. So far, the success of numerical simulations in predicting the highly non-linear behaviour of polymer solutions in complex flows has been limited. In this thesis, selected constitutive models are evaluated under the high El flow regime in the cross-slot and contraction benchmark flows using a numerical technique based on the finite volume method. The numerical technique is implemented within the OpenFOAM framework and thoroughly validated in the benchmark flow. A modification to the FENE dumbbell model based on the non-affine deformation of polymer solutions is proposed, which enabled the prediction of some non-linear material functions and also enhanced numerical stability, allowing a higher Wi to be attained. Asymmetric flow instability in the cross-slot flow has been studied. Time-dependent stability diagrams were constructed based on Wi and the strain, ε, both of which govern the stretching of a polymer chain. In the contraction flow, elastic instability is simulated for the first time in this geometry. Substantial time-dependent asymmetric flow patterns were predicted as seen in experiments. The effect of the contraction ratio is investigated through a stability diagram. Three-dimensional finite element simulations were also carried out to study the effect of the aspect ratio in the contraction flow of a Phan-Thien-Tanner fluid. The simulations suggest that a lip vortex mechanism is a signature for the onset of strong viscoelastic behaviour.
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Andrade, Restrepo Martín. "Mathematical modeling and evolutionary processes." Thesis, Sorbonne Paris Cité, 2019. http://www.theses.fr/2019USPCC021.
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La recherche présentée dans cette thèse concerne différents sujets dans le domaine de la biomathématique. J’aborde diverses questions en biologie (et liées aux systèmes complexes) avec des méthodes mathématiques et numériques. Ces questions sont les suivantes: (i) Les processus passifs sont-ils suffisants pour justifier la distribution asymétrique des protéines endommagées pendant et après la cytokinèse de la levure? (ii) Quels processus sont à l’origine des schémas complexes d’expansion de l’amyloïde bêta dans le cerveau des patients atteints de la maladie d’Alzheimer? (iii) Qu’y a-t-il derrière la dichotomie de ‘clusters’ vs. ‘cline-like’ dans les modèles d’évolution le long de gradients environnementaux? (iv) Comment cette dichotomie affecte-t-elle la dynamique spatiale des invasions? (v) Comment la multi-stabilité se manifeste-t-elle dans ces modèles? Ces questions sont abordées (à différentes échelles, certaines totalement et certaines partiellement) avec différentes méthodes théoriques. Les résultats devraient permettre de mieux comprendre les processus biologiques analysés et de motiver la poursuite des travaux expérimentaux et empiriques susceptibles de contribuer à résoudre les incertitudes persistantesThe research presented in this thesis concerns different topics in the field of Biomathematics. I address diverse questions arising in biology (and related to complex systems) with mathematical and numerical methods. These questions are: (i) Are passive-processes enough to justify the asymmetric distribution of damaged proteins during and after yeast cytokinesis? (ii) What processes are behind the complex patterns of expansion of Amyloid beta in the brains of patients with Alzheimer’s disease? (iii) What is behind the clustering and cline-like dichotomy in models of evolution along environmental gradients? (iv) How does this dichotomy affect the spatial dynamics of invasions and range expansions? (v) How does multi-stability manifest in these models? These questions are approached (at different scales, some fully and some partially) with different theoretical methods. Results are expected to shed light on the biological processes analyzed and to motivate further experimental and empirical work which can help solve lingering uncertainties
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Wallin, Hageving Andreas. "IFPI : A Postcolonial Critique of the Trade Body’s Organisational Structure and Ideology." Thesis, Linnéuniversitetet, Institutionen för musik och bild (MB), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-94723.
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The purpose of this thesis is to present a postcolonial critique that may empower non-Western music industries globally. As per Nigerian music executive Tunde Ogundipe’s reasoning, its analysis isn’t prescriptive – it presents a critical analysis of IFPI’s organisation and ideology, which non-Western stakeholders may use as free strategic business intelligence if/as they please. Using a sociological methodology, IFPI’s organisational structure and operations are analysed with reference to three postcolonial axes: ideology, history and political geography. The analysis uncovers colonial path dependencies and present-day policies that reproduce the ‘civilising mission’.Syftet med detta examensarbete är att presentera en postkolonial kritik som kan stärka icke-västerländska musikindustrier globalt. Enligt den nigerianska musikföretagsledaren Tunde Ogundipes resonemang är analysen inte föreskriftsmässig – den presenterar en kritisk analys av IFPIs organisation och ideologi, vilken icke-västerländska intressenter kan använda som gratis strategisk affärsintelligens om/som de vill. Med hjälp av en sociologisk metodik analyseras IFPI:s organisationsstruktur och verksamhet med hänvisning till tre postkoloniala axlar: ideologi, historia och politisk geografi. Analysen påvisar kolonialt stigberoende och samtida policys som reproducerar den “civiliserande missionen”.
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Kempf, Alexandre. "Nonlinear encoding of sounds in the auditory cortex Temporal asymmetries in auditory coding and perception reflect multi-layered nonlinearities Cortical recruitment determines learning dynamics and strategy Interactions between nonlinear features in the mouse auditory cortex Context-dependent signaling of coincident auditory and visual events in primary visual cortex." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCB085.
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Les objets perceptuels sont les unités élémentaires utilisées par le cerveau pour construire une représentation interne du monde a partir de signaux physiques, comme la lumière ou les ondes sonores. Alors que ces signaux sont d'abord traduit, par les récepteurs dans les organes périphériques, en signaux neuronaux, l'émergence d'objets perceptuels nécessite un traitement intensif dans le système nerveux central qui n'est pas encore entièrement connu. Il est intéressant de noter que les progrès récents de deep learning montrent qu'une séries d'opérations non linéaires et linéaires est très efficace pour catégoriser les objets perceptuels visuels et auditifs de la même manière que les humains. En revanche, la plupart des connaissances actuelles sur le système auditif se concentrent sur les transformations linéaires. Afin de comprendre la contribution des non-linéarités du système auditif à la perception, nous avons étudié l'encodage des sons avec une intensité croissante et une intensité décroissante dans le cortex auditif de la souris. Ces deux sons sont perçus avec une importance inégale malgré le fait qu'ils ont la même énergie physique et le même contenu spectral, un phénomène incompatible avec le traitement linéaire. En enregistrant l'activité de grandes populations corticales pour les sons montants et descendants, nous avons constaté que le cortex les encode avec des populations distinctes qui détectent des caractéristiques non linéaires, ce qui explique l'asymétrie perceptuelle. Nous avons également montré que, dans les modèles de reinforcement learning, la quantité d'activité neuronale déclenchée par un son impacte la vitesse et la stratégie d'apprentissage. Des effets très similaires ont été observés dans plusieurs taches de discrimination ou les sons provoquaient des réponses neuronales de différentes intensités. Ceci établit que les non-linéarités du système auditif ont un impact sur la perception et le comportement. Pour mieux identifier les non-linéarités qui influencent le codage des sons, nous avons ensuite enregistré l'activité d'environ 60 000 neurones échantillonnant toute la superficie du cortex auditif. Au-delà de l'organisation tonotopique à fine échelle découverte avec cet ensemble de données, nous avons identifié et quantifié 7 non-linéarités. Il est aussi intéressant de constater que différentes non-linéarités peuvent interagir entre elles d'une manière non triviale. La connaissance de ces interactions est importante pour affiner le modèle de traitement auditif. Enfin, nous nous sommes demandé si les processus non linéaires sont également importants pour l'intégration multisensorielle. Nous avons mesuré, par imagerie calcique, comment les images et les sons se combinent dans le cortex visuel et auditif. Nous n'avons trouvé aucune modulation du cortex auditif (L2/3) en réponse à des stimuli visuels. Nous avons observé que les entrées du cortex auditif dans le cortex visuel affectent les réponses visuelles concomitantes à un son. Nous avons constaté que les projections du cortex auditif au cortex visuel encode de préférence une caractéristique non linéaire particulière : l'apparition soudaine de sons fort. Par conséquent, l'activité du cortex visuel pour une image et un son fort est plus élevée que pour l'image seule ou combinée à un son faible. Ce résultat suggère que les sons forts sont pertinents du point de vue de comportement multisensoriel, peut-être pour indiquer la présence de nouveaux objets dans le champ visuel, ce qui pourrait représenter des menaces potentielles. En conclusion, nos résultats montrent que les non-linéarités sont omniprésentes dans le traitement du son par le cerveau et jouent également un rôle dans l'intégration de l'information auditive avec l'information visuelle. Il est non seulement crucial de tenir compte de ces non-linéarités pour comprendre comment se forment les représentations perceptuelles, mais aussi pour prédire l'impact de ces représentations sur le comportementPerceptual objects are the elementary units used by the brain to construct an inner world representation of the environment from multiple physical sources, like light or sound waves. While the physical signals are first encoded by receptors in peripheral organs into neuroelectric signals, the emergence of perceptual object require extensive processing in the central nervous system which is not yet fully characterized. Interestingly, recent advances in deep learning shows that implementing series of nonlinear and linear operations is a very efficient way to create models that categorize visual and auditory perceptual objects similarly to humans. In contrast, most of the current knowledge about the auditory system concentrates on linear transformations. In order to establish a clear example of the contribution of auditory system nonlinearities to perception, we studied the encoding of sounds with an increasing intensity (up ramps) and a decreasing intensity (down ramps) in the mouse auditory cortex. Two behavioral tasks showed evidence that these two sounds are perceived with unequal salience despite carrying the same physical energy and spectral content, a phenomenon incompatible with linear processing. Recording the activity of large cortical populations for up- and down-ramping sounds, we found that cortex encodes them into distinct sets of non-linear features, and that asymmetric feature selection explained the perceptual asymmetry. To complement these results, we also showed that, in reinforcement learning models, the amount of neural activity triggered by a stimulus (e.g. a sound) impacts learning speed and strategy. Interestingly very similar effects were observed in sound discrimination behavior and could be explain by the amount of cortical activity triggered by the discriminated sounds. This altogether establishes that auditory system nonlinearities have an impact on perception and behavior. To more extensively identify the nonlinearities that influence sounds encoding, we then recorded the activity of around 60,000 neurons sampling the entire horizontal extent of auditory cortex. Beyond the fine scale tonotopic organization uncovered with this dataset, we identified and quantified 7 nonlinearities. We found interestingly that different nonlinearities can interact with each other in a non-trivial manner. The knowledge of these interactions carry good promises to refine auditory processing model. Finally, we wondered if the nonlinear processes are also important for multisensory integration. We measured how visual inputs and sounds combine in the visual and auditory cortex using calcium imaging in mice. We found no modulation of supragranular auditory cortex in response to visual stimuli, as observed in previous others studies. We observed that auditory cortex inputs to visual cortex affect visual responses concomitant to a sound. Interestingly, we found that auditory cortex projections to visual cortex preferentially channel activity from neurons encoding a particular non-linear feature: the loud onset of sudden sounds. As a result, visual cortex activity for an image combined with a loud sound is higher than for the image alone or combine with a quiet sound. Moreover, this boosting effect is highly nonlinear. This result suggests that loud sound onsets are behaviorally relevant in the visual system, possibly to indicate the presence of a new perceptual objects in the visual field, which could represent potential threats. As a conclusion, our results show that nonlinearities are ubiquitous in sound processing by the brain and also play a role in the integration of auditory information with visual information. In addition, it is not only crucial to account for these nonlinearities to understand how perceptual representations are formed but also to predict how these representations impact behavior
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Chen, Chun-Chieh, and 陳俊杰. "Asymmetric Dependence between the Exchange Rates and the Stock Markets." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/68344204369882865000.
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碩士國立中央大學
統計研究所
100
Using the data of exchange rates and stock markets between 2005 and 2010 for United States, Canada and Mexico, this thesis studies the correlation between the exchange rates and the stock markets after the global financial crisis. We observe the asymmetry structure of the exchange rates and the stock markets, and identify the most suitable model by different copula models. The investment periods of data are including: monthly return, seasonally return, half-yearly return and yearly return. We find the phenomenon of asymmetric dependence in each investment periods. However, the asymmetry is more obvious as the investment period increases.
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Tai, Shihchin, and 戴士欽. "How Do Weaker Firms Leverage Asymmetric IORs? Distinguishing Asset Specificity-based Dependence From Need-based Dependence." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/24157573712080693404.
Full textAbstract:
博士義守大學
管理學院管理碩博士班
100
Prior research on performance consequences of dependence has showed ambiguous empirical evidence, giving rise to two puzzles that firms under different conditions of dependence could be concerned about various kinds of performance, and unobserved moderator variables might obscure the effects of dependence on financial performance. For solving these puzzles, this study makes the distinction between asset specificity-based dependence and need-based dependence by tracing to theoretical background of dependence. Using survey and secondary data from 127 contract manufacturers in Taiwan, this study examines the effects of two aspects of dependence on its corresponding organizational performance. We further explore whether contractual governance and alliance management capability set the boundary conditions of the relationship between dependence and organizational performance, based on a dual governance perspective. Our results indicate that the concern of weaker firms is relationship quality rather than financial performance under the conditions of AS-based dependence and that learning effectiveness is more important than financial performance under the conditions of need-based dependence. Moreover, alliance management capability plays an important role in the relationship between need-based dependence and learning effectiveness. Extending resource dependence theory, this study provides a close understanding of how weaker firms leverage asymmetric IORs and performance implications of managing dependence.
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Poile, Christopher. "Asymmetric dependence and its effect on helping behaviour in work groups." Thesis, 2010. http://hdl.handle.net/10012/4954.
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A case study of two software teams in a large American software company revealed evidence of a power imbalance and intergroup conflict. The case study was used to generate questions about the effects of task-dependence on interpersonal work relationships. Situational affordances and Heider's balance theory were used to explain how task-dependence and expectations impel helping behaviour between coworkers.
The theoretical model was tested using an experimental card-game. The card-game was designed so that the task would remain the same while three factors of task-dependence were manipulated: level of dependence (low vs. high), mutuality of dependence (asymmetric vs. symmetric), and reward interdependence (individual vs. group). The goal was to isolate these aspects of task-dependence and measure their effect on helpful behaviours and intragroup conflict. The results indicated that as the level (the amount) of dependence increases, the amount of intragroup conflict increases, but so does the number of helpful behaviours. As the mutuality of dependence changes from asymmetric to symmetric, the number of helpful behaviours increases, but the intragroup conflict decreases.
The experiment deepens the findings of the case study: asymmetric dependence is associated with intragroup conflict and it presents a situation where the more powerful of the two is less inclined to give help to their dependent. Unexpectedly, however, if the level of the dependence increases, the more powerful of the two will offer more help. These findings contradict the predictions of social exchange theory, interdependence theory, and the power and influence approaches. Balance theory offers an explanation: a request for help coming from a co-worker in great need creates an imbalanced cognitive situation, one with more tension than the situation created when a request comes from someone less dependent. One way the help-giver can relieve their cognitive tension is to offer help; helping a
co-worker satisfies the co-worker's expectations, thereby balancing the help-giver's cognitive situation. The experiment also demonstrated that a high level of task-dependence is necessary for helpful behaviours to increase; without the ability and opportunity to help afforded by task-dependence, greater social expectation will have little effect on the amount of helping behaviour.
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Tsafack, Kemassong Georges Desire. "Asymmetric dependence modeling and implications for international diversification and risk management." Thèse, 2007. http://hdl.handle.net/1866/2157.
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Sung, Wei-Ying, and 宋威穎. "An Empirical Study on the Correlation between Information Asymmetric and Institutional Dependence of Environmental Governance- the Application of Social Experiment." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/v8aejr.
Full textAbstract:
博士國立中山大學
公共事務管理研究所
106
With the emergence of environmental consciousness, how local governments can set a clear path for urban development and ensure regional transformation toward sustainable development, while maintaining a balance between economic development and environmental sustainability and protecting the rights and interests of different stakeholders, has become an important subject of local governance nowadays. In the past, local governments catered excessively to existing development thinking in pursuit of urban economic development. Moreover, due to the interdependence of the political, economic, and industrial structures, they were susceptible to a state of institutional structural path dependency when it came to environmental governance. Hence, it was difficult for them to truly realize sustainable development at the local level. The Cieding no. 1-4 roadway environmental disputed issues in Kaohsiung can be seen as an epitome of the conflict between local economic development and environmental sustainability. It is also an explicit case of institutional dependency in local environmental governance. Focusing on the no. 1-4 roadway environmental disputed issues, this study attempted to discuss the relationship between the asymmetry of environmental information and the institutional dependency of environmental governance. Relevant policy recommendations were proposed to provide a reference for improve local environmental governance from institutional dependency. A two-phase mixed-methods research approach combining qualitative and quantitative research was adopted to conduct an investigation into the local stakeholders. In the first phase, document analysis, field investigation, and in-depth interviews were conducted in order to identify the path of the formation of institutional dependency of environmental governance and its main causes. In the second phase, a questionnaire survey and in-depth interviews were carried out to understand the relationship between institutional dependency of environment governance and information asymmetry. Finally, a social experiment was employed to explore how the intervention of different attributes of environmental information influences the resident’s environmental decisions and judgments.Through summarizing and analyzing the results of document analysis, field observations, in-depth interviews, and a questionnaire survey, it was found that: I. Local environmental governance is influenced by the interdependence among the overall political-economic structure, industrial patterns, policy dependency, and social atmosphere. It is also affected by how individuals perceive their life experiences, which is inter-related with the environmental institutional structure. The positive feedback sequence in path dependency is, thus, generated, strengthening the institutional dependency of local environmental governance. II. A positive correlation can be found between the information asymmetry and the path dependency in local environmental governance. It appears that the more local residents believe in the environmental information provided by local networks and the media, the more dependent they are on the local political-economic structure and the social atmosphere. Conversely, the more they believe in the information provided by environmental groups, the less dependent they are on the local political-economic structure and the social atmosphere. III. Both the amount and attributes of environmental information influence the local residents’ environmental decisions and judgments. It seems that, for residents who have already taken a specific stance, their stances remain unaffected by the exposure to both positive messages regarding economic development and negative messages regarding environmental impacts. However, the latter reduce the level of support for development projects among residents with various stances. Finally, this study, which is based on the findings, will offer advice for the local government and stakeholders as well as advice for the future studies.
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Lin, Yu-Jung, and 林佑蓉. "Temperature- and voltage-dependent phase transformations of asymmetric oligo-oxyethylene funtionalized imidazolium salts." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/85869299157138918731.
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Bigelow, Roberta Anne. "The energy dependent beta asymmetry in the ⁸Li decay." 1986. http://catalog.hathitrust.org/api/volumes/oclc/14086614.html.
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Thesis (Ph. D.)--University of Wisconsin--Madison, 1986.Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 152-154).
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Tuan, Hai-Nguyen, and 阮海遵. "Existence of Positive Dependence, Asymmetry and Leverage Effects in Real Estate Exchange-traded Funds (ETFs)." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/71519231248505730540.
Full textAbstract:
碩士中原大學
國際商學碩士學位學程
102
This research examines the performance of return and volatility models containing long-memory, asymmetric volatility, and leverage effects by comparing two categories of Real Estate Investment Trusts (REITs) Exchange-traded Funds (ETFs), namely, US REIT ETFs and Global REIT ETFs. This thesis utilizes two short-memory models, the autoregressive moving average – exponential generalized autoregressive conditional heteroskedasticity (ARMA-EGARCH); and autoregressive moving average – asymmetric power autoregressive conditional heteroskedasticity (ARMA-APARCH); and two long-memory models, autoregressive fractionally-integrated moving average – fractionally-integrated exponential generalized autoregressive conditional heteroskedasticity (ARFIMA-FIEGARCH); and autoregressive fractionally-integrated moving average – fractionally-integrated asymmetric power autoregressive conditional heteroskedasticity (ARFIMA-FIAPARCH). The study finds presence of volatility clustering, leverage effects and volatility asymmetry phenomena in both US and Global REIT ETFs. Also, long memory models are better in characterizing future values using lagged returns and volatilities compared to short memory models based on the maximum log-likelihood values. The research also identifies positive long-term dependence in the volatilities of both ETFs, however, fails to conclude dual long memory processes. Nevertheless, the research still can pose a challenge on the weak-form efficient market hypothesis (EMH) of Fama (1970), because historical values of REIT ETFs can still be used to predict their future values. Lastly, US REIT ETFs are seen to be more unstable than their more stationary Global REIT ETFs counterparts. The proper modeling of US and Global REIT ETFs can provide traders, fund managers and investors in creating well-defined trading strategies. Findings can also offer more understanding in the properties of this type of ETFs, and open future channels of research to academicians and researchers.
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Chen, Kai-Feng, and 陳凱風. "Search of Time-dependent CP Asymmetry in B -> eta'Ks Decay at Belle." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/37760995557432432017.
Full textAbstract:
碩士國立臺灣大學
物理學研究所
90
We present the search of time-dependent CP asymmetries with the charmless hadronic B -> eta' Ks decay sample taken at the KEKB asymmetric energy e+e- collider with the Belle detector. While one B is reconstructed as the CP eigenstate eta'Ks, the flavor of accompanying B meson is investigated by its decay daughters. We report the CP violation coefficients of sine(S{eta'Ks}) and cosine(A{eta'Ks}) term: S{eta'Ks} = 0.28 {+-0.55} {+0.07 / -0.08}, A{eta'Ks} = 0.13 {+-0.32} {+0.09 / -0.06}.
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Plangger, Karl Helmut. "Modellierung und Simulation von Klebungen in der Feinwerktechnik." 2019. https://tud.qucosa.de/id/qucosa%3A74385.
Full textAbstract:
In der Arbeit wird das thermo-mechanische Verhalten eines in der optischen Industrie oft verwendeten Klebstoffs zur Klebung opto-mechanischer Bauteile experimentell untersucht und für numerische Anwendungen hinreichend genaue mathematisch und physikalisch geeignet modelliert (Linse, Spiegel, etc.). Durch die Tatsache das diese Klebstoffe bei Raumtemperatur ihre Glasübergangstemperatur besitzen zeigen die Untersuchungen eine äußerst starke Veränderung der Materialeigenschaften über der Temperatur. Hervorzuheben sind die Zug-/Druckasymmetrie des elastischen Modul und die hydrostatisch abhängige Plastizität.
Abgerundet werden diese Untersuchungen mit der Ermittlung der temperaturabhängigen thermischen Ausdehnung und des rein mechanisch wirksamen chemischen Schrumpf beim Abbinde-Prozess.
Zu Beachten ist dass diese Untersuchungen bei Dehnraten konstanten Experimenten erfolgten. Kriech- bzw. Relaxationseffekte wurde aus dem Umfang dieser Arbeit ausgeschlossen. In erster Linie ist es von Interesse die Basis zu schaffen quasistatische thermisch und mechanische beanspruchte Klebungen untersuchen zu können. Die angesprochenen vernachlässigten Effekte können auf dieser Basis zukünftig untersucht und damit in der Modellierung berücksichtigt werden.
Durch die im Rahmen der Arbeit gewonnenen Erkenntnisse werden Empfehlungen zur Auslegung solcher geklebter opto-mechanischer Baugruppen mit Standardmaterialmodellen wie das VON-MISES Plastizitätsmodell gegeben. Zusätzlich wird die Entwicklung eines zukünftigen Materialmodells, dass die genauere Modellierung der zuvor genannten Effekte gestattet, skizziert.:Inhaltsverzeichnis
Abkürzungsverzeichnis IV
Mathematische Operatoren und Notationen V
Symbolverzeichnis VI
1 Einleitung
1.1 Problemstellung und Motivation
1.2 Zielsetzung
1.3 Stand der Technik
1.4 Aufbau von Klebungen und Klebstoffen
1.5 Mechanisches Verhalten von Klebungen
2 Grundlagen der Kontinuumsmechanik
2.1 Deformation und Verzerrung
2.2 Bilanzgleichungen
2.3 Konstitutive Gleichungen
2.3.1 Elastisches Materialverhalten
2.3.2 Invarianten des Spannungstensors und -deviators
2.3.3 Plastizität mit isotroper Verfestigung
2.3.4 Plastizitätsmodell nach VON MISES
2.3.5 Lineares DRUCKER-PRAGER-Modell
2.3.6 Weiterentwickelte DRUCKER-PRAGER-Modelle
2.4 Randwertproblem
2.5 Schwache Form der lokalen Impulsbilanz
3 Experimente zur Materialcharakterisierung
3.1 Uniaxialer Zugversuch
3.1.1 Prüfmaschine und -aufbau
3.1.2 Festlegung der Prüfgeschwindigkeit
3.1.3 Auswertung des Zugversuchs
3.1.4 Temperaturabhängige Zugversuche
3.2 Uniaxialer Druckversuch
3.2.1 Prüfmaschine und Auswertung
Inhaltsverzeichnis II
3.2.2 Ergebnisse aus dem Druckversuch
3.3 Dreipunktbiegeversuch
3.3.1 Probenform und Prüfaufbau
3.3.2 Auswertungen beim Dreipunktbiegeversuch
3.3.3 Dehnratenkonstanten Prügeschwindigkeit
3.3.4 Temperaturabhängige Dreipunktbiegeexperimente
3.4 Zugscherversuch für dicke Fügeteile
3.4.1 Prüfmaschine und -aufbau
3.4.2 Probenform und Herstellung
3.4.3 Prüfgeschwindigkeit
3.4.4 Verschiebungsmessung
3.4.5 Auswertungen beim Zugscherversuch
3.4.6 Ergebnisse der Zugscherversuche
3.5 Temperaturabhängiger Ausdehnungskoeffizient
3.6 Messung des chemischen Schrumpfs
3.7 Invariantendarstellung bei Raumtemperatur
3.8 Zusammenfassung der Versuchsergebnisse
4 Simulationen
4.1 Finite-Elemente-Methode
4.1.1 LS-DYNA und MSC.Marc
4.1.2 Nichtlineare Optimierung
4.2 Parameteridentifikation aus den Experimenten
4.2.1 Einachsiger Zugversuch
4.2.2 Einachsiger Druckversuch
4.2.3 Dreipunktbiegeversuch
4.2.4 Zugscherversuch für dicke Fügeteile
5 Demonstratorexperimente und -simulationen
5.1 Zugscherverbund von Überlappungsklebungen
5.2 Demonstrator für chemischen Schrumpf
5.2.1 Einfluss einer reduzierten Klebelänge
5.3 Demonstrator für thermische Ausdehnung
6 Zusammenfassung und Ausblick