Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 87 for “"Irreversibility"”.
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Essays in Heterogeneity, Irreversibility and Aggregate Fluctuations
<p>"Essays on Heterogeneity, Irreversibility and Aggregate Fluctuations" explores the connections between micro structure and technologies available to the agents operating in the economy and the dynamic of aggregate output and productivity. The thesis aims at further understanding the linkages …
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On the irreversibility of collective motion in polar active matter
• Chapter 1 – Introduction to the contents and main results of the thesis. • Chapter 2 – Review of Itô and Stratonovich calculus, stochastic thermodynamics, (stochastic) entropy production, time-reversal symmetry, the principle of detailed balance, Sekimoto’s stochastic energetics and spherical …
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Membrane reconstitution studies on the irreversibility of inactivation of sarcoplasmic reticulum of rabbit skeletal muscle
Mild acid treatment or incubation in the presence of Ethylene glycol bis (β-aminoethyl ether) - N,N' - tetraacetic acid inactivates calcium transport by sarcoplasmic reticulum membranes but does not inhibit calcium stimulated ATPase activity. This inactivation is apparently irreversible. The …
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High resolution fatigue crack growth analysis of crack closure and slip irreversibility using digital image correlation
Crack closure and slip irreversibility in the fatigue crack growth of 316L stainless steel were investigated using digital image correlation (DIC). A polycrystalline and a oriented specimen were tested to study mode I fatigue crack growth, while oriented specimens were used to study mixed mode (I …
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The Reversibility/irreversibility of the Thermohaline Circulation After Its Shutdown: Simulations From a Hierarchy of Climate Models
The thermohaline circulation (THC) in the North Atlantic plays a vital role in explaining past abrupt climate changes and in maintaining the current climate. Its remarkable nonlinear dynamics, first demonstrated by Stommel, has been supported by different types of models. This has led to concern …
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Irreversibility line, Hall effect, and longitudinal resistivity measurements on cobalt-doped yttrium barium(2) copper(3) oxygen(7-delta)
We have developed a procedure for growing high-quality single crystals of YBa$\sb2$(Cu$\sb{\rm 1-x}$Co$\sb{\rm x})\sb3$O$\sb{7-\delta}.$ By high-pressure oxygen annealing, we produced single crystals having transition temperatures, T$\sb{\rm c}$, comparable with those of polycrystalline samples of …
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Studies of the Kinetics of Cell Cycle Processes in S. Cerevisiae: The Molecular Basis of Start Irreversibility and Cyclin-Cdk Ordering of Mitotic Events
<p>The cell cycle machinery of Saccharomyces cerevisiae consists of a central negative feedback oscillator comprising cyclin-CDK and its antagonist, APCCdc20. This oscillator is stabilized and tuned by positive feedback loops, and its frequency is modulated by checkpoint controls. Either by …
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Essays in Macroeconomics
… the implications of firm inter-connectivity and irreversibility of inter-firm cooperation relationships on the business cycle. Chapter 3 "Inter-sector matching efficiency and sectoral comovement'' examines the comovement of sectoral labor markets when there is search friction in the inter-firm …
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Thermodynamics of Biological Active Matter
… demonstrate what new physics we could learn from irreversibility by applying these metrics to various biological systems. In Chapter 2, I will illustrate three unique methods of measuring irreversibility and verify them on a simple toy model. Equipped with these ideas, in Chapter 3, I will apply …
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Children's understanding of death
… of the concepts of causality, state of death, irreversibility and universality of death, as well as to examine the influence of experience with death and parental explanations on children's understanding of death. Twenty children at each of three age groups (4, 6, and 9 years) were read two …
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Fatigue crack growth (FCG) modeling in the presence of nano-obstacles
… loading. A method is developed to quantify the irreversibility of slip, and calculate it as a function of the twin lamella thickness and crack-tip to twin lamella spacing. Subsequently, atomistically calculated slip irreversibility is utilized in dislocation dynamics crack growth simulations to …
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Essays in capital markets
… investment. The focus is on the effects of the irreversibility of real investment on financial asset prices. The model shows how this irreversibility leads to time variation in volatility and systematic risk of stock returns. Changes in these variables are driven by real economic activity, in …
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Formaldehyde mass-transfer properties study
… observed formaldehyde mass-transfer irreversibility and the recently developed formaldehyde polymerization theory. The procedures and methods for analyzing and measuring formaldehyde mass-transfer characteristics were developed in an effort to minimize experimental variability and …
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Performance investigation of various cold thermal energy storages
… temperatures are analyzed. The main source of irreversibility was from entropy generation accompanying phase change, although viscous dissipation losses were included. Energy efficiencies were well over 99% for all cases, while exergy efficiencies ranged from 70% to 92%. By far, the most …
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Modeling and Validation of Rolling Rotor Switched Reluctance Motors for Automotive Applications
… goal in many application, for some applications irreversibility of the speed reducer might be necessary. Rolling rotor switched reluctance motors (RRSRM) comprise all advantages of switched reluctance motors and due to rolling motion of the motor covers also the function of speed reduction …
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The development of children’s understanding of death
… & Aubby, 2014), children aged 4-5 understood irreversibility first, and had started to grasp the ideas of applicability, cessation and inevitability. However, they had not yet developed what is considered to be a mature concept of death. Whereas the majority of 6-11 year olds understood the …
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Firms’ financial flexibility and the profitability of style investing
… factors are conditioned on firms’ investment irreversibility and the business cycle. Next, the momentum profit can be explained by (a) adjusting returns for risks using the Fama and French model that is conditioned on firms’ financial constraints and the business cycle, and (b) accounting for …
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Low Energy Electronic Raman Scattering in Cuprate High Temperature Superconductors
… that superconducting order is present above the irreversibility field obtained from magnetization measurements.
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Stochastic dynamics and fluctuation theorems in Brownian, feedback-controlled, and optical cavity systems
… parameters and external protocols in generating irreversibility in the cavity dynamics. Finally, a hierarchy of alternating inequalities for the truncated cumulant expansion of entropy production in homogeneous Markov jump processes is presented. While this result is not central to the main theme …
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Factors relating to and impacting eGovernment readiness in South Africa : a case of the Western Cape Government
… the concepts of 'moments of translation' and 'irreversibility' as a lens through which to understand and interpret the social phenomenon. Although a number of eGovernment researchers have argued that strong leadership and clear vision are required to implement eGovernment initiatives, the view …
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