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Dissertations / Theses on the topic 'Reversal theory'

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Published: 4 June 2021
Last updated: 20 February 2023

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1

Murgatroyd, S. J. "Reversal theory and psychotherapy." Thesis, Open University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377941.

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2

Hockings, William Hill. "Time Reversal Violation in Nuclear Effective Field Theory." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/196076.

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The lack of invariance with respect to time reversal (T) of the weak interactions has long been known. However, T violation has yet to be observed from flavor-diagonal sources, where the primary quantities of interest are electric dipole moments (EDMs). Weak T violation gives EDMs that are far too small, but strong T violation via flavor-diagonal sources could give EDMs strong enough to be detected in the near future. It is thus important to understand precisely how various quark-level sources of T violation manifest themselves in hadronic physics.A useful technique for dealing with low-energy phenomena involving nucleons, nuclei, and various mesons, is effective field theory (EFT). The formalism and methodology of EFT are presented, followed by an introduction to the construction of chiral Lagrangians.A motivation for the study of T violation beyond the weak interactions is then given, with brief introductions to the most important sources of T violation.The QCD theta term is looked at using two differentapproaches. First, enforcing vacuum stability at quark level, a series of T-violating interactions ensue. Second, enforcing vacuum stability at hadronic level via field redefinitions, spurious interactions are demonstrated to be avoidable. Both approaches involve a constraining relationship between theta-term T violation and up-down quark-mass-difference isospin violation. The quark chromo-EDMs are shown to be identical to the theta term in their chiral symmetry properties. The quark EDMs and Weinberg operator,conversely, are shown to generate new interactions in addition to those generated by the theta term, differing nucleon EDM contributions in particular.The electric dipole form factor (EDFF) of the nucleon, with a theta term source, is calculated in both leading and subleading orders in chiral perturbation theory, with the momentum dependence at both orders given entirely by contributions from the pion cloud. Theleading result is purely isovector, while an isoscalar result appears in subleading order. The isoscalar EDM is used as a lower-bound estimate of the deuteron EDM. The momentum dependence of the EDFF for small momentum transfer is related to the electromagnetic nucleonSchiff moment, which is computed to subleading order.
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3

Pilon, Joseph Paul. "Reactions to arousal and ambiguity, an application of reversal theory." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0008/NQ52438.pdf.

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4

Adelman, Dan. "Preference reversal and the independence axiom." Oberlin College Honors Theses / OhioLINK, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=oberlin1342184240.

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5

Sit, Hui-ping Cindy, and 薛慧萍. "Motivational orientations and sport participation in youth: a comparison of achievement goal theory and reversal theory." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B24873056.

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6

Sit, Hui-ping Cindy. "Motivational orientations and sport participation in youth : a comparison of achievement goal theory and reversal theory /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B24873056.

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7

Ilg, Matthias. "An investigation of spatially bounded, time independent quantum systems." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/28046.

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8

Toncich, Stanley Slavko. "Characterization of microstrip discontinuities by a dynamic source reversal technique using potential theory." Case Western Reserve University School of Graduate Studies / OhioLINK, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1055434084.

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9

Oksa, Annishka Education Faculty of Arts &amp Social Sciences UNSW. "Expertise reversal effect in explanatory notes for readers of Shakespearean text." Awarded by:University of New South Wales. Education, 2009. http://handle.unsw.edu.au/1959.4/43747.

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In recent decades, research into human cognition has unveiled in-depth insights into the structures and processes involved in the encoding, storage and retrieval of information. As human working memory is limited in both duration and capacity, cognitive load theory (Sweller, 1988, 1989, 1993, 1994; Sweller & Chandler 1994; Chandler & Sweller 1991; 1996) asserts that information should be designed in a way that does not mentally overload learners. However, instructional designs rarely take into account cognitive processes when structuring teaching materials. In fact, many traditional forms of instruction were devised prior to fundamental research into cognitive load effects. As a result, learners are often subjected to cognitive overload when required to engage in extraneous tasks that are not directly related to meaningful learning. This is a particular problem for intrinsically complex Shakespearean works, renowned to be some of the most difficult texts students may ever encounter. Acknowledging that Shakespearean texts were written for performance, they are not always studied as such. Frequently, the texts are read around the class, whereby the focus is not dramatic but literary. Therefore, under the current system of study it is necessary to investigate instruction for reading comprehension of Shakespearean texts. Reading Shakespeare's plays will often overwhelm working memory resources and cause comprehension problems due to the many interactive elements of information readers are required to process simultaneously. This is a significant issue as Shakespeare's works hold a great deal of literary, dramatic, and linguistic significance and their study forms a compulsory part of school curriculum and assessment that affects all students from English speaking nations. By tradition conventional modes of instruction for Shakespearean texts require readers to consult disparate sources of information such as footnotes and endnotes that may contain either inadequate or unnecessary detail. Having to search for relevant information and mentally integrate separate sources of text results in a split attention effect and causes high levels of unnecessary cognitive load. As a result, Shakespeare's texts continue to be such a struggle for many students that some educational faculties have started to initiate the removal of Shakespeare from curriculum instead of developing more effective instructional methods for this domain. This study applies cognitive load theory as a means of investigating the comprehension of Shakespeare by testing the effects of explanatory notes integrated line by line with original Shakespearean verse. Previous studies in cognitive load theory have indicated that restructuring material in accordance with cognitive principles can optimise learning. However, the majority of these studies have focused on technical areas.
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10

Ford, Michael George. "Metamotivation in children : a reversal theory perspective : an exploratory study in the primary school." Thesis, Leeds Beckett University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399193.

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11

Ängquist, Lennart. "Synchronous Voltage Reversal Control of Thyristor Controlled Series Capacitor." Doctoral thesis, KTH, Electrical Systems, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3396.

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Series compensation of transmission lines is an effectiveand cheap method of improving the power transmission systemperformance. Series capacitors virtually reduces the length ofthe line making it easier to keep all parts of the power systemrunning in synchronism and to maintain a constant voltage levelthroughout the system. In Sweden this technology has been inuse since almost 50 years.

The possibility to improve the performance of the ACtransmission system utilizing power electronic equipment hasbeen discussed a lot since about ten years. Some newsemiconductor based concepts have been developed beside thesince long established HVDC and SVC technologies. The ThyristorControlled Series Capacitor (TCSC) is one such concept. Byvarying the inserted reactance an immediate and well-definedimpact on the active power flow in the transmission line isobtained. Several potential applications, specifically poweroscillation damping, benefit from this capability. The conceptimplied the requirement to design a semiconductor valve, whichcan be inserted directly in the high-voltage power circuit.This certainly presented a technical challenge but thestraightforward approach appeared to be a cost-effectivealternative with small losses.

It was also realized that the TCSC exhibits quite differentbehaviour with respect to subsynchronous frequency componentsin the line current as compared to the fixed series capacitorbank. This was a very interesting aspect as the risk ofsubsynchronous resonance (SSR), which just involves such linecurrent components, has hampered the use of series compensationin power systems using thermal generating plants.

The thesis deals with the modelling and control aspects ofTCSC. A simplifying concept, the equivalent, instantaneousvoltage reversal, is introduced to represent the action of thethyristor controlled inductive branch, which is connected inparallel with the series capacitor bank in the TCSC. The idealvoltage reversal is used in the thesis in order to describe andexplain the TCSC dynamics, to investigate its apparentimpedance at various frequencies, as a platform forsynthesizing the boost control system and as the base elementin deriving a linear, small-signal dynamical model of thethree-phase TCSC. Quantitative Feedback Theory (QFT) then hasbeen applied to the TCSC model in order to tune its boostregulator taking into account the typical variation ofparameters that exists in a power system. The impact of theboost control system with respect to damping of SSR is finallybeing briefly looked at.

Keywords:Thyristor Controlled Series Capacitor, TCSC,FACTS, reactive power compensation, boost control, phasorestimation, Quantitative Feedback Theory, subsynchronousresonance, SSR.

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12

Watkins, Leo. "A reversal theory examination of running experiences and the experiential advertising of three leading running brands." Thesis, University of East London, 2017. http://roar.uel.ac.uk/5963/.

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Context & Objective This research examines three distinct phases of consumption linked to the experiential advertising of three leading brands in the running shoe industry. Novel application of reversal theory is used to aid understanding of running experiences presented in three adverts, consumer responses to them, and the lived experiences of runners. Design & Method A mixed methods approach was applied across three studies. In study 1, reversal theory was used to identify the metamotivational profiles of each advert. In study 2, a questionnaire comprising the Reversal Theory State Measure and the Positive And Negative Affect Schedule was administered in a within-subjects design to assess advert effects. In study 3, semi-structured interviews were conducted with ten ultra-runners to triangulate the findings of study 1 and examine the phenomenology of ultra-running. Results Findings from study 1 demonstrate the utility of reversal theory as an effective framework for auditing experiential advertising; the adverts studied shared narrow metamotivational profiles dominated by autic-mastery but differing across the telic and paratelic states. Findings from study 2 revealed similar effects in viewers across the three adverts, and provided strong empirical support of the concept of metamotivational reversals. In study 3, reversal theory provided an effective framework for unpacking ultra-running experiences, with the concept of psychodiversity proving to be key. Conclusions & Implications Findings of the research suggest that running brands should develop more diverse representations of running in their experiential advertising to better reflect the lived experiences of runners and appeal to a wider range of consumers.
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13

Gillen, Michael J. "A test of the adaptation theory of figure reversal selective adaptation as a function of physical stimulus /." Click here for download, 2008. http://proquest.umi.com/pqdweb?did=1564034651&sid=1&Fmt=2&clientId=3260&RQT=309&VName=PQD.

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14

Besek, Jordan. "On the Historicity of Social and Ecological Change: From the Asian Carp Invasion to the Reversal of the Chicago River." Thesis, University of Oregon, 2017. http://hdl.handle.net/1794/22675.

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The increasingly unsustainable relationship between society and the environment is drawing considerable attention across disciplines. In sociology this attention has focused largely on developing theoretical frameworks for explicating how various social processes negatively impact the environment, however what sociology has done less well is develop rich understandings of the other side of this relationship, how ecological change can create instability in social processes. To fill this gap I employ an extended case study of the interplay between the social and ecological processes related to the introduction of Asian carp, an invasive species that has set into motion considerable contestations across political, cultural, economic and scientific social processes in the greater Chicago area as well as the Great Lakes. Through this case study I demonstrate how ecological changes, such as the migration of Asian carp, can impact social processes. I then provide an historical analysis of the 1900 reversal of the Chicago River to show how social responses to the Asian carp invasion are structured through previous histories. My aim is to demonstrate that the Asian carp invasion is not, in itself, a single transformative process, but rather a cumulative development generated and constrained via several connected social and ecological histories. My overall aim is to demonstrate the benefit of examining how social histories and ecological histories combine over time, or the historicity of social and ecological interaction.
10000-01-01
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15

Shaffer, Victoria A. "Preference reversals in employee evaluations of cash versus non-cash incentives." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1117599610.

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Thesis (Ph. D.)--Ohio State University, 2005.
Title from first page of PDF file. Document formatted into pages; contains x, 102 p.; also includes graphics (some col.) Includes bibliographical references (p. 100-102). Available online via OhioLINK's ETD Center
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16

Tucker, Jennifer. "Motivating Subjects: Data Sharing in Cancer Research." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/29022.

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This dissertation explores motivation in decision-making and action in science and technology, through the lens of a case study: scientific data sharing in cancer research. The research begins with the premise that motivation and emotion are key elements of what it means to be human, and consequently, are important variables in how individuals make decisions and take action. At the same time, institutional controls and social messaging send a variety of signals intended to motivate specific actions and behaviors. Understanding the interplay between personal motives and social influences may point to strategies that better align individual and social perceptions and discourse. To explore these dynamics, this research centers on a large-scale cancer research program led by the National Institutes of Healthâ s National Cancer Institute. The goal of the program is to encourage interoperability and data sharing between diverse and highly autonomous cancer centers across the U.S. Housed in an organization focused on biomedical informatics, the program has a technologically-focused mission; the goal is to facilitate institutional data sharing to connect the cancer research enterprise. This focus contrasts with the more relationship-based point-to-point data sharing currently reported by researchers as the norm. Researchers are motivated to share data with others under specific conditions: when there is a foundation of trust with the person or community being shared with; when the perceived reward of sharing is well-defined and of value to the person sharing; and when there is perceived to be a lower risk or cost than the benefit received. Without these conditions, there are often determined to be insufficient incentives and rewards for sharing. Data sharing is both a personal decision and a social level problem. Data is both subjective and personal; it is often an extension of researcherâ s identity, and serves as a measure of his or her value and capability. In the search for standards and interoperable data sets, institutional and technologically-mediated forms of data sharing are perceived to ignore the subjective and local knowledge embodied in the data being shared. To explore these dimensions, this study considers the technology, economics, legal elements, and personal sides of data sharing, and applies two conceptual frameworks to evaluate alternatives for action.
Ph. D.
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17

Grover, Jennifer J. "The role of reversal theory in moderating occupational stress in British police officers, special constables and civilian support staff." Thesis, Open University, 1999. http://oro.open.ac.uk/57955/.

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The causes and consequences of police stress has received considerable research interest. Reversal theory postulates some individuals may inherently require higher (Le. paratelic) arousal levels, compared with those seeking lower (Le. telic) arousal levels. This present study investigated: (i) psychological problems experienced between British police officers, special (voluntary) police and civilian support staff; (ii) telic and paratelic dominance; (iii) use of humour; (iv) dimensions of police humour; and (v) predictors of police psychological problems, telic dominance and humour use. A mixed, cross-sectional survey design was employed. Questionnaires were sent to all police officers, support staff and specials (N = 373) within one division of a provincial police service. Participants completed the following measures: (i) Coping Humour Scale (CHS); (ii) Multi-dimensional Sense of Humour Scale (MSHS); (iii) Telic Dominance Scale (TDS); and (v) Employee Assistance Program Inventory (EAPI). Questionnaires were returned from 191 participants (51% response rate). For overall CHS and MSHS scores, no significant differences between groups were found; although police gender differences were significant. MSHS police dimensions deviated from previous samples. Overall TDS scores were significantly higher for specials. For all three groups, EAPI subscale scores were normative, but with significantly higher substance use reported by police. Police EAPI scores were generally significantly higher, indicative of greater psychological difficulties. Predictors of police psychological problems, TDS, CHS and MSHS scores are reported. These results suggest that police may have a paratelic dominance, in which humour provides a valuable and adaptive mechanism for pOlice stress. Clinical implications are discussed in light of these results.
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18

Niyongabo, Prime. "Bound and free excitons in ZnO : optical selection rules in the absence and presence of time reversal symmetry." Diss., Pretoria : [s. n.], 2009. http://upetd.up.ac.za/thesis/available/etd-11292009-192654/.

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19

Durtschi, Shirley Kay. "Emotions and cognitions of athletes competing in a high-risk sport." Full text available online (restricted access), 1998. http://images.lib.monash.edu.au/ts/theses/Durtschi.pdf.

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20

Chu, Wing-sze. "An investigation of physical activity participation pattern and level in relation to metamotivational profiles in Hong Kong children using reversal theory /." View the Table of Contents & Abstract, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31941606.

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21

Blumen, Sacha Carl. "Granularity and state socialisation: explaining Germany’s 2015 refugee policy reversal." Thesis, Canberra, ACT : The Australian National University, 2016. http://hdl.handle.net/1885/111430.

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Between late August and mid-November 2015, the German Government liberalised its refugee policy to allow an unlimited number of people to claim asylum in the country, and then made a near-reversal on this policy by calling for European-wide quotas on the number of refugees entering the EU and a reduction in the number of refugees Germany would admit. The German Government’s decisions to liberalise and then backtrack on its refugee policy within a short time period, at a time when many people were still seeking asylum from the Syrian civil war, present a puzzle to the dominant International Relations theories of state socialisation—constructivism and rational choice—which do not explain well this type of observed real world behaviour. By using the Foreign Policy Analysis literature to augment the constructivist and rational choice approaches, I argue that a more granular approach can help explain Germany’s backtracking on refugee policy in 2015. I focus on the domestic actors, institutions, and the contested processes of their interactions from which state policy emerged. Using this approach, I explain Germany’s backtracking on its refugee policy as the result of varying sets of interactions over time among actors who had different and potentially changing interests and beliefs. This focus on granularity and contestation within state policy making processes provides a more precise understanding of the dynamics of policy making from which we gain a greater insight into this puzzling example of state behaviour. Such approaches may also help explain other examples of state behaviour that are similarly mysterious.
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22

Abboud, Layane. "Time Reversal techniques applied to wire fault detection and location in wire networks." Phd thesis, Supélec, 2012. http://tel.archives-ouvertes.fr/tel-00771964.

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In this thesis we present new approaches in the domains of soft fault detection and location in complex wire networks, based on the properties of time reversal. When addressing the detection of soft faults, the idea is to adapt the testing signal to the network under test, instead of being predefined for all the tested networks, as opposed to standard reflectometry techniques. We prove that this approach, which we name the Matched Pulse approach (MP), is beneficial whenever the system is more complex, i.e., its response is richer in echoes, which is opposed to common understanding. The MP analysis is conducted via a formal mathematical analysis, followed by simulation and experimental results validating the proposed approach. In the domain of soft fault location, and based on the DORT (Décomposition de l'Opérateur de Retournement Temporel) properties, we derive a distributive non-iterative method able to synthesize signals that focus on the fault position. Through a statistical study we analyze some of the influencing parameters on the performance of the method, and then simulation and experimental results show that the method is able to synthesize signals directly focalizing on the soft fault position, without the need for iterations.
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23

Davis, Joseph E. "Interpreting direction of anxiety within Hanin's individual zone of optimal functioning /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9953855.

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24

Wilson, Lizbeth Luther. "Relationships of reported state measures of performance to self-perceived teaching competence: an intrapersonal analysis of ten adult educators." Thesis, The University of Sydney, 2004. http://hdl.handle.net/2123/565.

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This study investigated intrapersonal self-reported, perceived teaching competence. Each of ten adult educators� teaching competence was analysed in a qualitative/quantitative study within ten interactive teaching sessions. Self-reported influences of performance variables pertaining to perceived arousal discrepancy, effort, performance state self-esteem, and telic/paratelic metamotivational states were related to self-perceptions of teaching competence. Seven of ten adult educators demonstrated a relationship between their current state and perceived teaching competence. A higher perceived teaching competence was experienced when rating themselves nearer to their ideal teaching state. From a reversal theory perspective, the investigator determined telic/paratelic situational state balance by primarily utilising the Telic State Measure (Svebak and Murgatroyd, 1985), and conducting the Metamotivational State Interview Coding Schedule (O�Connell, Potocky, Cook, & Gerkovich, 1991) to code psychological lability (i.e., how easily and readily one shifts between states) and subjective experiences of the educator�s perceived competent and �less� competent teaching sessions.
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Wilson, Lizbeth Luther. "Relationships of reported state measures of performance to self-perceived teaching competence an intrapersonal analysis of ten adult educators /." University of Sydney. Community and Behavioural Health Sciences, 2004. http://hdl.handle.net/2123/565.

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This study investigated intrapersonal self-reported, perceived teaching competence. Each of ten adult educators� teaching competence was analysed in a qualitative/quantitative study within ten interactive teaching sessions. Self-reported influences of performance variables pertaining to perceived arousal discrepancy, effort, performance state self-esteem, and telic/paratelic metamotivational states were related to self-perceptions of teaching competence. Seven of ten adult educators demonstrated a relationship between their current state and perceived teaching competence. A higher perceived teaching competence was experienced when rating themselves nearer to their ideal teaching state. From a reversal theory perspective, the investigator determined telic/paratelic situational state balance by primarily utilising the Telic State Measure (Svebak and Murgatroyd, 1985), and conducting the Metamotivational State Interview Coding Schedule (O�Connell, Potocky, Cook, & Gerkovich, 1991) to code psychological lability (i.e., how easily and readily one shifts between states) and subjective experiences of the educator�s perceived competent and �less� competent teaching sessions.
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26

Liewkongsataporn, Wichit. "A numerical study of pulse-combustor jet impingement heat transfer." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22651.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2008.
Committee Co-Chair: Ahrens, Fred; Committee Co-Chair: Patterson, Tim; Committee Member: Aidun, Cyrus; Committee Member: Empie, Jeff; Committee Member: Frederick, Jim.
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27

Khacharem, Aimen. "Apprentissage de Scènes de Football Animées : Effet des Designs Pédagogiques et de L'expertise." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4113.

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Comment les animations pédagogiques doivent-elles être conçues pour améliorer l'apprentissage? Quels sont les facteurs qui doivent être pris en compte lors de du design des animations? Les récents progrès dans le domaine d'enseignement assisté par ordinateur ont permis de créer des visualisations dynamiques telles que les animations pour présenter des informations dynamiques qui changent au cours du temps et dans l'espace. Cependant, plusieurs recherches ont montré que les animations imposent de lourdes demandes sur les ressources de la mémoire de travail entraînant une diminution des résultats d'apprentissage. En se basant sur une perspective de la charge cognitive, nous avons essayé de manager la charge cognitive imposée par des animations de football à travers l'utilisation de différents designs pédagogiques. Les résultats ont indiqué des interactions significatives entre ces designs et le niveau d'expertise des joueurs, conduisant au phénomène connu sous le nom d'effet du renversement de l'expertise. Selon cet effet, les designs pédagogiques qui sont efficaces pour les joueurs novices peuvent devenir inefficaces, voire même nuisibles pour les joueurs experts. Les résultats soulignent l'importance d'ajuster les designs pédagogiques aux changements du niveau d'expertise du joueur
How instructional animations should be designed in order to enhance learning? What factors need to be taken into account in the design of animations? Recent advances in computer-based instruction have made it possible to produce dynamic visualizations such as animations to depict dynamic information that change over time and space. However, there has been increasing evidence accumulated that animations often impose significant working memory demands resulting in decreased learning outcomes. Based on a cognitive load perspective, in this thesis, we tried to effectively manage cognitive load imposed by soccer animations through the use of different forms of instructional designs. The results indicated significant interactions between these instructional designs and levels of player expertise, leading to the phenomenon known as the expertise reversal effect. According to this effect, the instructional designs that are effective for novice players may become ineffective or even detrimental for expert players. The findings argue for the importance of tailoring instructional designs to changing levels of player expertise
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28

Tsareva, Olga. "Variabilité temporelle du champ magnétique terrestre et son influence sur l'environnement spatial proche." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30122.

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Le champ magnétique terrestre connaît une forte variabilité temporelle avec des périodes caractéristiques aussi courtes que la dizaine de secondes (sous-orages magnétosphériques responsables du déclenchement des aurores polaires) et aussi longues que le million d'années (inversions de la polarité nord-sud). Ses variations temporelles, bien que d'origine et de caractéristiques très différentes, affectent la dynamique de l'environnement spatial proche de la Terre : précipitation de particules dans la haute atmosphère, modification des flux de particules cosmiques, échappement atmosphérique. La première partie de cette thèse est dédiée au développement d'une nouvelle théorie cinétique des instabilités dans la queue magnétosphérique qui pourrait expliquer l'origine des sous-orages. En partant d'une théorie connue des instabilités de dérive liées à la présence d'un gradient de pression dans la queue magnétosphérique, le modèle proposé dans cette these inclut le mouvement de rebond des électrons piégés dans le champ géomagnétique qui peuvent entrer en résonance avec les modes de dérive (drift-Alfvén instability) si le gradient de densité dans la queue devient important. La prise en compte de ce mouvement de rebond augmente significativement le taux de croissance de cette instabilité universelle. Pour tenter de valider ce nouveau modèle, un exemple d'observation aurorale par la mission THEMIS (3 février 2008) a été analysé. Cet événement a été choisi car il correspond à un arc auroral isolé observé à la fois par les caméras All-sky situées au sol et par les satellites THEMIS orbitant à 10 RE. Cette activation aurorale semble bien avoir été déclenchée par une soudaine compression de la queue magnétosphérique vers 10 RE augmentant sensiblement le gradient de pression et provoquant des fluctuations importantes du champ magnétique. Les ordres de grandeur de la période et du taux de croissance de ces oscillations sont compatibles avec les courbes de dispersion déduites du modèle théorique. La deuxième partie de la thèse étudie l'influence du renversement des polarités du champ magnétique sur l'environnement radiatif de la Terre. En particulier, nous avons calculé les variations du flux de protons cosmiques lors d'une inversion géomagnétique pour déduire les doses de rayonnement auxquelles la population humaine et les astronautes pourraient être exposés. [...]
The Earth's magnetic field undergoes strong temporal variabilities with characteristic periods as short as ten seconds (magnetospheric substorms triggering the polar aurora) and as long as a million years (geomagnetic reversals). Its temporal variations, although of very different origin and characteristics, affect the dynamics of the near-Earth space environment.The first part of this thesis is dedicated to the development of a new kinetic theory of instabilities in the magnetospheric tail which could explain the origin of substorms. Starting from a known theory of drift instabilities linked to the presence of a pressure gradient in the magnetotail, the proposed model includes trapped bouncing electrons which can enter into resonance with drift Alfvén instability modes if the density gradient in the tail becomes large. Taking this the bouncing motion into account significantly increases the growth rate of this universal instability. To try to validate this new model, an example of an auroral observation by the THEMIS mission (February 3, 2008) was analyzed. This event was chosen because it corresponds to an isolated auroral arc observed both by the All-sky cameras located on the ground and by the THEMIS satellites orbiting at 10 RE. This auroral activation seems to have been triggered by a sudden compression of the magnetospheric tail towards 10 RE significantly increasing the pressure gradient and causing significant fluctuations in the magnetic field. The orders of magnitude of the period and the growth rate of these oscillations are compatible with the dispersion curves deduced from the theoretical model.Second part of the thesis is devoted to changes in the radiation situation on Earth, the radiation belts and the terrestrial atmosphere during Earth's magnetic field reversal. We calculated the variations in galactic cosmic proton flux during a geomagnetic reversal to infer the radiation doses to which human population and astronauts could be exposed. The radiation background should increase by a factor of about three during the solar minimum period, and the elevated radiation regions should be redistributed and their areas will apparently increase due to the dipole field decrease, such radiation doses are not dangerous for humans and other living creatures. At the same time, for astronauts aboard the ISS orbiting at 400 km above the ground, during a reversal period a 14-fold radiation increase can be dangerous. Undoubtedly, in this case, a correction of the orbits of space vehicles would be required. Classical Störmer theory was generalized to the case of an axisymmetric superposition of dipole and quadrupole fields. [...]
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29

Hadji, Richard John. "Homfly skein theory of reversed string satellites." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408554.

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30

Foster, Kevin Patrick. "Status decay the reverse of status construction theory /." Connect to this title online, 2009.

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31

Lei, Yawen, and Ziwei Yang. "Reverse Mortgage in China Based on Game Theory." Thesis, KTH, Fastigheter och byggande, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-266881.

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The elderly population ratio in China had a continuous increasing trend in the past decade, which means that Chinese society has gradually entered an “aging society”. Lack of corresponding pension policies, huge population base and change in family structures all let the government bear huge pension pressure. The implementation of reverse mortgages in China can effectively solve this problem and alleviate the government's financial pressure. Reverse mortgage is an emerging industry in China, which is a loan available to homeowners, 62 years or older, that allows them to convert part of the equity in their homes into cash. In order to analyze the feasibility of reverse mortgage in China, we use both quantitative and qualitative model to study the impact factors of reverse mortgage. Firstly, we build a three-party game matrix model among the government, customers (old people) and financial institutions to study how changes in different influencing factors affect the decision-making of each participant. Then, we introduce asymmetric information factors and build a two-party incomplete information game theory model between customers and financial institutions. Then, we refine the impact factors mentioned above to study the relationship among different factors and make a pricing function for financial institutions. Based on the above models, we can provide some relevant suggestions for financial institutions about how to price the annual pension amount and determine the penalty amount if the customer provide a fake health certificate.
Äldrebefolkningen i Kina har ökat stadigt under det senaste årtiondet, vilket innebär att det kinesiska samhället gradvis omvandlas till "ett åldrande samhälle". Brist på lämplig och tydlig pensionspolitik, stor befolkning och förändring i familjestrukturer leder till att regeringen bär ett stort tryck att dela ut pensionen. Genomförandet av omvändinteckning i Kina kan effektivt minska regeringens ekonomiska börda och lösa detta problem. Omvändinteckning är en växande industri i Kina som är ett lån till hemägare som är 62 år eller äldre, vilket innebär att de kan omvandla en del av deras eget kapital i sina hem till kontanter. För att analysera genomförbarheten av omvändinteckning i Kina har vi använt både kvantitativa och kvalitativa modeller för att studera de faktorer som påverkar omvändinteckning. För det första bygger vi en trepartsspel-matris modell mellan regeringen, kunderna (äldre) och de finansinstituten för att studera hur förändringar i olika faktorer påverkar beslutsfattandet för varje deltagare. Därefter introducerar vi flera asymmetriska informationsfaktorer och bygger en ofullständig tvåparti-informationsspelteori modell mellan kunderna och finansinstitutionerna. Därefter förfina vi de ovanstående konsekvensfaktorerna för att studera förhållandet mellan olika faktorer och skapa en prissättning för finansinstituten. Baserat på ovanstående modeller kan vi ge några relevanta förslag till finansinstitut om hur man prissätter det årliga pensionsbeloppet och bestämmer bötesbeloppet om kunden lämnar in ett falskt hälsointyg.
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32

Natelberg, Stefan. "Constraint based program transformation theory." Thesis, De Montfort University, 2009. http://hdl.handle.net/2086/2923.

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The FermaT Transformation Engine is an industrial strength toolset for the migration of Assembler and Cobol based legacy systems to C. It uses an intermediate language and several dozen mathematical proven transformations to raise the abstraction level of a source code or to restructure and simplify it as needed. The actual program transformation process with the aid of this toolset is semi-automated which means that a maintainer has not only to apply one transformation after another but also to evaluate the transformation result. This can be a very difficult task especially if the given program is very large and if a lot of transformations have to be applied. Moreover, it cannot be assured that a transformation target will be achieved because it relies on the decisions taken by the respective maintainer which in turn are based on his personal knowledge. Even a small mistake can lead to a failure of the entire program transformation process which usually causes an extensive and time consuming backtrack. Furthermore, it is difficult to compare the results of different transformation sequences applied on the same program. To put it briefly, the manual approach is inflexible and often hard to use especially for maintainers with little knowledge about transformation theory. There already exist different approaches to solve these well known problems and to simplify the accessibility of the FermaT Transformation Engine. One recently presented approach is based on a particular prediction technique whereas another is based on various search tactics. Both intend to automatise the program transformation process. However, the approaches solve some problems but not without introducing others. On the one hand, the prediction based approach is very fast but often not able to provide a transformation sequence which achieves the defined program transformation targets. The results depend a lot on the algorithms which analyse the given program and on the knowledge which is available to make the right decisions during the program transformation process. On the other hand, the search based approach usually finds suitable results in terms of the given target but only in combination with small programs and short transformation sequences. It is simply not possible to perform an extensive search on a large-scale program in reasonable time. To solve the described problems and to extend the operating range of the FermaT Transformation Engine, this thesis proposes a constraint based program transformation system. The approach is semi-automated and provides the possibility to outline an entire program transformation process on the basis of constraints and transformation schemes. In this context, a constraint is a condition which has to be satisfied at some point during the application of a transformation sequence whereas a transformation scheme defines the search space which consists of a set of transformation sequences. After the constraints and the scheme have been defined, the system uses a unique knowledge-based prediction technique followed by a particular search tactic to reduce the number of transformation sequences within the search space and to find a transformation sequence which is applicable and which satisfies the given constraints. Moreover, it is possible to describe those transformation schemes with the aid of a formal language. The presented thesis will provide a definition and a classification of constraints for program transformations. It will discuss capabilities and effects of transformations and their value to define transformation sets. The modelling of program transformation processes with the aid of transformation schemes which in turn are based on finite automata will be presented and the inclusion of constraints into these schemes will be explained. A formal language to describe transformation schemes will be introduced and the automated construction of these schemes from the language will be shown. Furthermore, the thesis will discuss a unique prediction technique which uses the capabilities of transformations, an evaluation of the transformation sequences on the basis of transformation effects and a particular search tactic which is related to linear and tree search tactics. The practical value of the presented approach will be proven with the aid of three medium-scale case studies. The first one will show how to raise the abstraction level whereas the second one will show how to decrease the complexity of a particular program. The third one will show how to increase the execution speed of a selected program. Moreover, the work will be summarised and evaluated on the basis of the research questions. Its limitations will be disclosed and some suggestion for future work will be made.
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33

Brauer, Ethan. "Truthmakers and Model Theory." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586176557329917.

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34

Challinor, Elizabeth Pilar. "Reversals and contradictions : the study of development as social practice in Cape Verde." Thesis, University of Sussex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323021.

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Thapar, Anjali. "The reverse-interference effect: A reexamination of the interference theory of forgetting." Case Western Reserve University School of Graduate Studies / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=case1057689212.

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Leung, Jennifer. "Essays on Bilateral Vertical Specialization,Reversed Fragmentation, Reshoring, and R&D Productivity." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429567575.

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37

Hinkelmann, Franziska Babette. "Algebraic theory for discrete models in systems biology." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/28509.

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This dissertation develops algebraic theory for discrete models in systems biology. Many discrete model types can be translated into the framework of polynomial dynamical systems (PDS), that is, time- and state-discrete dynamical systems over a finite field where the transition function for each variable is given as a polynomial. This allows for using a range of theoretical and computational tools from computer algebra, which results in a powerful computational engine for model construction, parameter estimation, and analysis methods. Formal definitions and theorems for PDS and the concept of PDS as models of biological systems are introduced in section 1.3. Constructing a model for given time-course data is a challenging problem. Several methods for reverse-engineering, the process of inferring a model solely based on experimental data, are described briefly in section 1.3. If the underlying dependencies of the model components are known in addition to experimental data, inferring a "good" model amounts to parameter estimation. Chapter 2 describes a parameter estimation algorithm that infers a special class of polynomials, so called nested canalyzing functions. Models consisting of nested canalyzing functions have been shown to exhibit desirable biological properties, namely robustness and stability. The algorithm is based on the parametrization of nested canalyzing functions. To demonstrate the feasibility of the method, it is applied to the cell-cycle network of budding yeast. Several discrete model types, such as Boolean networks, logical models, and bounded Petri nets, can be translated into the framework of PDS. Section 3 describes how to translate agent-based models into polynomial dynamical systems. Chapter 4, 5, and 6 are concerned with analysis of complex models. Section 4 proposes a new method to identify steady states and limit cycles. The method relies on the fact that attractors correspond to the solutions of a system of polynomials over a finite field, a long-studied problem in algebraic geometry which can be efficiently solved by computing Gröbner bases. Section 5 introduces a bit-wise implementation of a Gröbner basis algorithm for Boolean polynomials. This implementation has been incorporated into the core engine of Macaulay2. Chapter 6 discusses bistability for Boolean models formulated as polynomial dynamical systems.
Ph. D.
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Freire, Ageu Barbosa. "Cúbicas Reversas e Redes de Quádricas." Universidade Federal da Paraíba, 2016. http://tede.biblioteca.ufpb.br:8080/handle/tede/9275.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
In this work, we present an explicit geometric characterization for the space of quadratcs form vanishing precisely on a twisted cubic. We show that the set of degenerate quadrics lying on a net of quadrics containing a twisted cubic is described by a curve whose equation is given by the square of an irreducible conic. Conversely, if is a net of quadrics whosw intersection with the set of degenerate quadrics is a curve given by the square of an irreducible conic, we furnish conditions under which the cammon zero locus of turns out to be a twisted cubic. It is enough to require that does not contain a pair of planes.
Neste trabalho, apresentamos uma caracteriza c~ao geom etrica expl cita para o espa co das formas quadr aticas que se anulam precisamente sobre uma c ubica reversa. Mostramos que o conjunto das qu adricas degeneradas pertencentes a uma rede de qu adricas que cont em a c ubica reversa e descrita por uma curva cuja equa c~ao e dada pelo quadrado de uma c^onica irredut vel. Rec procamente, se e uma rede de qu adricas cuja interse c~ao com o conjunto das qu adricas n~ao degeneradas e uma curva dada pelo quadrado de uma c^onica irredut vel, fornecemos condi c~oes sob as quais o lugar dos zeros comuns de seja uma c ubica reversa. E su ciente que n~ao contenha um par de plano.
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Shields, William. "Theory and Practice in the Study of Technological Systems." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/26796.

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This dissertation is intended to further technology studies by analyzing some of its important methodological tools and using those tools in combination to study complex technological systems in an historical context. The first chapter of the dissertation examines in detail four influential models by which complex technological systems have been analyzed: Hughesâ s system model, Bijkerâ s social construction model, Latour, Callon, and Lawâ s actor-network model, and Ruth Schwartz Cowanâ s consumption junction model. For each model, I summarize the seminal works, analyze the uses of the model in the literature, and offer some refinements to the models based on that analysis. Chapter 2 presents three case studies applying these models two different technological systems. First, the early development of the American automobile industry, 1895 to 1940, is studied using Hughesâ s concepts of technological momentum and reverse salients. Second, the automobileâ s impact on American society is explored over the same time period relying on Ruth Schwartz Cowanâ s consumer-oriented perspective and Wiebe Bijkerâ s concept of technological frames. The third case study examines the technological means by which, over a long period of time, American cities were rendered impervious to huge conflagrationsâ commonplace until the end of the 19th century. For the analysis of this system, I use actor-network theory, Wiebe Bijkerâ s technological frames, and Hughesâ s reverse salients.
Ph. D.
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40

Diana, Habtu. "Affect in A Small Place: Jamaica Kincaid Reverses the Colonial Gaze." Thesis, Södertörns högskola, Institutionen för kultur och lärande, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-27812.

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This essay uses Sara Ahmed's theory of affect to analyze Jamaica Kincaid´s A Small Place. I argue that Jamaica Kincaid uses anger to create a position for Western reader and to evoke emotions such as shame. Theorist Sara Ahmed argues that emotions have political dimension. Thus, I will use Sara Ahmed´s theory to examine what function anger and shame have in A Small Place. In her essay, Kincaid provokes her readers by attacking them for past injustice through anger. Because of this many critics have claimed that A Small Place has an angry tone. However, Kincaid´s aim seems to be to reverse the gaze by exposing the Europeans and Americans of exploitation, slavery, imperialism and colonization and this way reverse the traditional travel gaze, which allows us to see Antigua through the perspective of the third world.
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41

Brown, Whitney E., and Lana D. Ray. "Electronic reverse auctions in the federal government." Thesis, Monterey, California, Naval Postgraduate School, 2007. http://hdl.handle.net/10945/38037.

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In light of the limited recognition of electronic reverse auctions (e-RA) in the acquisition field, the purpose of this research paper is to further the use of e-RAs throughout the federal government and the Department of Defense (D0D). By exploring a multitude of auction types and designs that have been or are currently being used in the private sector, these practices set a basis for researching the auction types being used in the public sector. This paper further explores the regulations guiding the use of e-RAs and investigates the federal government's application of reverse auctions through studies, reports, and interviews with users of e-RAs. Details as to what attributes are prevalent in these e-RAs, what features are best suited for e-RAs, and what benefits have been derived from the use of e-RAs in the federal government are also included. Finally, the researchers found that e-RAs have increased transparency, cost savings, and efficiencies in the acquisition process. Although reverse auctions are being used effectively, the researchers found that there are still opportunities for improvement including incorporating a fully functional best-value tool into e-RA technology and developing more thorough federal guidance on e-RAs as an alternative pricing method.
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42

Niemi, Isabelle. "Reverse stress testing approaches based on multivariate normality." Thesis, Umeå universitet, Institutionen för fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-149486.

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Reverse stress testing is a way of finding a combination of market risk factors, called a scenario, that leads to a specific loss for e.g. a portfolio. A market risk factor can for example be a stock return. In this project, we use reverse stress tests to find a scenario that would make a clearing house insolvent in case of a clearing house member default. When a member defaults, the clearing house must cover for the member's positions. If the clearing house's resource pool is not enough for this purpose, the clearing house defaults as well. To find out when this happens is of interest for regulatory purposes, as the default of a clearing house might lead to severe negative effects on the financial market. Cinnober's currently used method, SPS, uses a bisection-like iterative algorithm to find the scenario which makes the clearing house insolvent. The scenario found by SPS is restricted to be a multiple of a predefined scenario, which is clearly a limitation in the consideration of possible scenarios. To investigate the possibility of finding scenarios without this restriction, two other reverse stress tests were implemented and compared to SPS. The first test, PCA/G-S, assumes multivariate normal distribution of the profits and losses of the assets in the defaulting member's portfolio. PCA/G-S yields scenarios of asset profits and losses, for which the portfolio return is the specified loss - the clearing house resource pool. The second test, called RF, assumes multivariate normal distribution of the risk factors affecting the prices of the assets in the portfolio. RF outputs a scenario of market risk factors causing the portfolio loss to be the specified loss. The assets in the portfolio were restricted to stocks, European stock options and stock futures. PCA/G-S was shown to imply negative asset prices, as the assumption of multinormality does not consider that the loss can never be greater than the asset price itself. Negative prices appeared more frequently for options than for futures and stocks. Furthermore, the scenarios found by PCA/G-S were in terms of profits and losses, and were generally only convertible to risk factors if the portfolio only consisted of stocks. The advantage compared to SPS, however, was that PCA/G-S was numerically faster. As the results of the RF method are risk factor scenarios, no conversion problems appear. Moreover, it cannot yield negative asset prices, which is advantageous compared to PCA/G-S. However, the RF method was slower than SPS, and especially slow for options. All the multivariate normal distribution assumptions, for the profits and losses as well as the risk factors, were rejected by multinormality tests. Thus, the assumptions for PCA/G-S and RF were not consistent with reality. Nonetheless, the tests indeed provide scenarios where the resource pool is depleted.
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43

Dent, James Edgar. "Anti-Specker Properties in Constructive Reverse Mathematics." Thesis, University of Canterbury. Department of Mathematics and Statistics, 2013. http://hdl.handle.net/10092/9169.

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Constructive reverse mathematics is a programme in which non- and semi-constructive principles are classified in accordance with which other principles they imply or are implied by, relative to the framework of Bishop-style constructive mathematics. One such principle that has come under focus in recent years is an antithesis of Specker's theorem (that theorem being a characteristic result of Russian recursive mathematics): this so-called anti-Specker property is intuitionistically valid, and of considerable utility in proving results of real and complex analysis. We introduce several new weakenings of the anti-Specker property and explore their role in constructive reverse mathematics, identifying implication relationships that they stand in to other notable principles. These include, but are not limited to: variations upon Brouwer's fan theorem, certain compactness properties, and so-called zero-stability properties. We also give similar classification results for principles arising directly from Specker's theorem itself, and present new, direct proofs of related fan-theoretic results. We investigate how anti-Specker properties, alongside power-series-based arguments, enable us to recover information about the structure of holomorphic functions: in particular, they allow us to streamline a sequence of maximum-modulus theorems.
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44

Bruhagen, Åsa. "Justifying Preferential Treatment - Preferential Policies in Theory and Reality." Thesis, Jönköping University, JIBS, Political Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-368.

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Background and problem: It is important for a policy aiming at overcoming discrimination to be justifiable as just or as creating justice. When a policy is implemented lacking such qualities it is argued to be unjust, which creates a problem. During the last decades there has been massive immigration to the Western countries from countries marked by war and disaster. This has created problems of integration into the “new” society, and the use of preferential policies has become increasingly topical. Whether or not the use of preferential policies is a just method is the basis of this thesis.

Aim: The aim of this thesis is to study the concept of preferential policies in an impartial perspective of fairness. By impartial it is meant to present facts speaking both for and against preferential policies as being just. The main question of this thesis is whether or not preferential treatment is a just method to create equality within the society.

Method: A research method of textual analysis has been used combined with an analysis of structure of arguments.

Theoretical framework: First, definitions of discrimination and preferential policies as such are focused upon in the third chapter. Second, the concept of social justice and its connection to preferential policies is treated. The question if preferential policies should be directed towards individuals or groups is a central question in the debate and it will demand its space in this thesis. Here the importance of merit will be discussed. The section about individuals and groups will be followed by a section discussing the importance of ethnic diversity which will be followed by a comparison of the development of preferential policies in the USA and Sweden. Last, there will be a section where an attempt to generalize between arguments is made.

Conclusions and Discussion: In this part a conclusion and a discussion will be presented. Here conclusions will be drawn from the gathered material. Finally there will be a discussion on the subject and of how the research procedure has proceeded.

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Mersin, Serhan. "A Hypercomputational Approach To The Agent Causation Theory Of Free Will." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607148/index.pdf.

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Hypercomputation, which is the general concept embracing all machinery capable of carrying out more tasks than Turing Machines and beyond the Turing Limit, has implications for various fields including mathematics, physics, computer science and philosophy. Regarding its philosophical aspects, it is necessary to reveal the position of hypercomputation relative to the classical computational theory of mind in order to clarify and broaden the scope of hypercomputation so that it encompasses some phenomena which are regarded as problematic because of their property of being uncomputable. This thesis points to a relation between hypercomputation and the agent-causation theory of free will by exploring that theory'
s alleged infinite-regress feature, which has been regarded by some authors as problematic and used against the agent causation theory. In order to cope with this problem, we propose a certain hypercomputer, viz. the reverse Zeus machine. The reverse Zeus machine can help to understand the infinite-regress aspect of agent causation better than accelerating Turing machines (or ordinary Zeus machines). Accelerating Turing machines are abstract machines which perform temporal patterning in an accelerating manner by executing each step in half the time required for the previous step. This allows them to compute infinitely many operations in finite time. Although reverse Zeus machines have the same working principle as accelerating Turing machines, we show that agent causation can be represented by reverse Zeus machines better than by the classical Zeus machines.
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Wutz, Alexander. "Das Produktalterungsmodell und deterministische Losgrößenmodelle im Rahmen von Reverse Logistics /." Hamburg : Kovač, 2008. http://www.verlagdrkovac.de/978-3-8300-3454-4.htm.

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Mirza, Ahmed Akram. "Pressure driven instabilities in the reversed-field pinch : numerical and theoretical studies." Doctoral thesis, KTH, Fusionsplasmafysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121345.

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According to classical linearized resistive magnetohydrodynamics theory, pressuredriven modes are unstable in the reversed-field pinch (RFP) due to unfavorable magnetic field line curvature. The result is based on the assumption of an adiabatic energy equation where anisotropic thermal conduction effects are ignored as compared to convection and compression. In this thesis the effects of heat conduction in the energy equation have been studied. We have examined these effects on the linear stability of pressure-driven resistive modes using boundary value theory (Δ´ ) and a novel initial-value full resistive MHD code employing the Generalized Weighted Residual Method (GWRM). In the Δ´ method, a shooting technique is employed by integrating from the resistive layer to boundaries. The GWRM method, on the other hand, is a time-spectral Galerkin method in which the fully linearized MHD equations are solved. For detailed computations, efficiency requires the temporal and spatial domains to be divided into subdomains. For this purpose, a number of challenging test cases including linearized ideal MHD equations are treated. Numerical and analytical investigations of equilibria reveal that thermal conduction effects are not stabilizing for reactor relevant values of Lundquist number, S0, and normalized pressure, βθ, for tearing-stable plasmas. These studies show that growth rate scales as  γ~_ S0−1/5 , which is weaker than for the adiabatic case, γ~_ S0−1/3. A numerical study of optimized confinement for an advanced RFP scenario including ohmic heating and heat conduction, is also part of this thesis. The fully nonlinear resistive MHD code DEBSP has been employed. We have identified, using both Δ´ and GWRM methods, that the observed crash of the high confinement is caused by resistive, pressure-driven modes.

QC 20130503

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Noriega-Rivero, Gerardo. "La carrera de Letras Inglesas en el cuidado editorial." Thesis, Universidad Nacional Autónoma de México, 2015. http://hdl.handle.net/10919/64907.

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Ziemba, Alexander, and Fabian Prevolnik. "The reverse logistics of electric vehicle batteries : Challenges encountered by 3PLs and recyclers." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Centre of Logistics and Supply Chain Management (CeLS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-43887.

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Background:          The growing number of electric vehicles gives rise to a whole new reverse supply chain. Once the electric vehicle batteries reach their end-of-life, societal and governmental pressure forces automotive manufacturers to set up a network for disposing the hazardous batteries. Although, the volumes of returned batteries remain low, volumes will increase in upcoming years. Current networks and processes related to the return flow of electric vehicle batteries are not well established, nor well defined. Thus, creating an urgency to develop efficient collection networks.   Purpose:                  The purpose of this study is to investigate how reverse logistics networks are currently set up and to provide an overview of how the different actors and processes are connected. In addition, this thesis aims to identify challenges encountered by logistics providers and recyclers. By doing so, we hope to contribute to the research gap of which factors that constitutes a bottleneck for further development of the reverse logistics chain of electric vehicle batteries.   Method:                  The thesis conducts an interview study and is qualitative in nature. Semi-structured interviews generated empirical data, which was analysed through cross-case analysis incorporating a thematic analysis. Through this analysis we were able to achieve new theoretical understandings in connection to institutional theory.   Conclusion:             Through empirical findings a detailed framework of the reverse logistics chain of EVBs is portrayed. Furthermore, different challenges span over the processes illustrated in the framework. This presents an overview which is not found in current literature and extends current research on this topic.
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García, Vélez Javier Humberto. "Mechanism design o reverse game theory : una propuesta para la asignación eficiente de obras públicas de infraestructura en el Perú." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2015. http://tesis.pucp.edu.pe/repositorio/handle/123456789/6702.

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En el marco de los Objetivos del Milenio, la falta de provisión de servicios públicos esenciales constituye en el Perú una carga histórica que debe ser superada con el objetivo de implementar de manera eficiente políticas de desarrollo social, establecer índices sostenibles de crecimiento micro y macroeconómico y aportar a la reducción de las tasas de pobreza en el país. Sin embargo, es indiscutible que la prestación de tales servicios esenciales o de interés público o general (servicios eléctricos, de transporte, ferroviarios, aeroportuarios, portuarios, etc.) no es posible sin contar con el soporte o sostén de una infraestructura que permita su viabilidad. De esta manera, en los países latinoamericanos, la falta de provisión de servicios públicos se ha intentado explicar en la denominada “Brecha de Infraestructura en América del Sur”, término que la Comisión Económica para América Latina y el Caribe (“CEPAL”) y la Secretaría General de la Unión de Naciones Suramericanas (“UNASUR”) han utilizado en diversas investigaciones Ejemplo claro de esta brecha es que, en los últimos 20 años, los países latinoamericanos (con distintos modelos económicos y políticos) han invertido aproximadamente entre el 2% y el 3% de su Producto Bruto Interno (“PBI”) en infraestructura, salvo en los casos de Chile con 6% y Colombia con 4%
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