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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
221

Projevy a důsledky turistifikace v Teplicích / Effects and consequences of turistifacion in Teplice

Čáslavová, Eva January 2015 (has links)
This diploma thesis deals with effects and consequences of touristification in the spa town of Teplice. The aim of this work is the analysis of current state of Teplice's spa therapy and monitoring of functional changes in the town. The emphasis is placed on activities, relational links and the level of co- operation and attitudes of the main participants in the tourism in the town. An inseparable part is also an opinion poll (investigation) among local residents. The aim of this dissertation is, except for findings and an evaluation of effects of touristification in the area of interest, also the suggestion of steps leading to stabilization and improvement of the situation. Powered by TCPDF (www.tcpdf.org)
222

Tělesná příprava k vojenské části talentových přijímacích zkoušek na VO FTVS UK / Physical preparation for military part of talent entrance exams at Military Department of Faculty of Physical Education and Sport

Pros, Jakub January 2015 (has links)
TITLE OF THE WORK Physical preparation for the military part of the talent exam at Military Department of the Faculty of Physical Education and Sport in Prague. DEFINITION OF THE PROBLEM It is necessary to pass the special physical exam to be admitted for studying at Military Department. The content of this exam is significantly different from other physical activities and the preparation for it may cause several problems to the candidates. MAIN GOALS The main goal of this diploma thesis is to create a package of the exercises used for improving technical and fitness part of the performance primarily in the military part of physical exam. PLAN OF PROCESSING After extensive research of the available documents the package of the exercises will be created. RESULTS Based on studying of necessary literature and using the theoretical methods the package of the exercises has been successfully created. KEYWORDS Army physical fitness, Rope ladder climbing, Load carrying, Special physical preparation, Talent test, Czech Armed Forces.
223

“There is no God and we are his prophets”: The Visionary Potential of Memory and Nostalgia in Cormac McCarthy's No Country for Old Men and The Road

Pugh, Marie Reine 01 March 2016 (has links)
Memory and nostalgia work in complex, paradoxical ways in Cormac McCarthy's No Country for Old Men and The Road, both haunting the main protagonists, Sheriff Ed Tom Bell and the father, as well as bringing them to crucial realizations. These men give up the traditional hero role for the more meaningful and generative image of “carrying the fire,” which unites these two novels. Carrying the fire represents a memorial and nostalgic longing for home and family. Bell and the father attain this vision because of their obsession with the past, and because of their struggle with memory and nostalgia. Memory, for these characters, has both personal and collective dimensions. Nostalgia, likewise, has a dual function, following Svetlana Boym's definition of nostalgics as being capable of restorative and reflective longing for the past. Family, or Paul Ricœur’s theory of close relations, bridges the gap between the conflicts of memory and nostalgia, acting as the means by which they understand this vision of carrying the fire while also embodying it. Additionally, the duality of both memory and nostalgia drive Bell and the father to seek for a prophetic vision, for stability in the past to deal with the threats in the present, which appears in the narrative structures of each novel.
224

Goodwillnedskrivningarnas värderelevans : En studie på den svenska marknaden / Value relevance of goodwill impairment loss : A study on the Swedish market

Berggren, Melinda, Stensgaard, Simon January 2019 (has links)
I denna studien har 97 företag på Stockholmsbörsens Large Cap undersökts för de finansiella åren 2016 och 2017. Syftet med studien har varit att förklara sambandet mellan nedskrivning av goodwill och börsvärde för företag på den svenska aktiemarknaden samt att analysera och jämföra studiens resultat med tidigare forskning som utförts på utländska marknader. Det innebär att goodwillnedskrivningens värderelevans har undersökts för att se om företagens börsvärde påverkas när nedskrivning av goodwill görs samt om informationen påverkar investerarens beslut. För att undersöka det har vi utgått från en modell som har tillämpats av andra forskare. Modellen innefattar variablerna börsvärde, eget kapital, resultat före skatt, redovisad goodwill och nedskrivning av goodwill; och information om dessa har inhämtats från företagens årsredovisningar. Undersökningen gjordes med hjälp av en multipel regressionsanalys. Det positiva sambandet mellan börsvärde och eget kapital och resultat före skatt som resultatet påvisade innebar att vi kunde anta att aktiemarknaden i stort är värderelevant. För att undersöka goodwillnedskrivningarnas värderelevans krävdes det att redovisad goodwill var en värderelevant variabel vilket resultatet visade. Ett positivt samband kunde påvisas mellan nedskrivning av goodwill och börsvärde, vilket indikerar att det inte är värderelevant. Detta tyder på att dessa nedskrivningar inte ger investerare någon tillförlitlig information i investeringsbeslut. / In this study 97 companies from Nasdaq Stockholm´s Large Cap has been examined for the financial years 2016 and 2017. The purpose of the study has been to explain the correlation between goodwill impairment loss and market value for companies on the Swedish market and to analyze and compare the study´s results with previous research that has been found on foreign markets. This means that the value relevance of goodwill impairments has been examined to see if the companies´ market value is affected when goodwill impairment loss is made and if the information affects the investors decision. A model previously used by other researchers has been applied to examine this. The model includes the variables market value, book value, pre-tax profit, carrying value of goodwill and goodwill impairment loss; and information about these has been collected from the companies’ annual reports. The study was done using a multiple regression analysis. The positive correlation between market value and the variables of book value and pre-tax profit means that we could assume that the stock market is value relevant. In order to investigate the value relevance of goodwill impairment loss it was required that reported goodwill was a value relevant variable, which the result showed. A positive correlation could be demonstrated between impairment of goodwill and market capitalization, which indicates that it is not value relevant. This indicates that these impairment losses do not give investors any reliable information in investment decisions.
225

biomechanics study of school-bag carrying during stair ascent and descent by children =: 背負書包上落樓梯對學童生物力學反應的硏究. / 背負書包上落樓梯對學童生物力學反應的硏究 / A biomechanics study of school-bag carrying during stair ascent and descent by children =: Bei fu shu bao shang luo lou ti dui xue tong sheng wu li xue fan ying de yan jiu. / Bei fu shu bao shang luo lou ti dui xue tong sheng wu li xue fan ying de yan jiu

January 2002 (has links)
Lau Tsz Chung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references (leaves 57-66). / Text in English; abstracts in English and Chinese. / Lau Tsz Chung. / Acknowledgement --- p.i / Abstract --- p.ii / Table of contents --- p.v / List of Figures --- p.viii / List of Tables --- p.x / Introduction --- p.1 / Background --- p.1 / Statement of Problem --- p.3 / Research Question --- p.4 / Significance of the Study --- p.4 / Theoretical Contribution --- p.4 / Practical Contribution --- p.5 / Review of Literature --- p.7 / Load carrying on Level Ground --- p.7 / Research Method Involved --- p.8 / Modified Gait Pattern During Load Carriage --- p.9 / Trunk Posture --- p.10 / Low Back Pain --- p.11 / Posture and Back Pain --- p.12 / Load Carrying Studies in Children --- p.14 / Stair Walking --- p.15 / Compared with Level Walking --- p.15 / Temporal Characteristics --- p.17 / Kinematics Measurement --- p.18 / Stair Dimensions --- p.19 / Stair Walking with Load Carriage --- p.21 / Physiological Studies --- p.21 / Biomechanical Studies --- p.21 / Methodology --- p.24 / Design --- p.24 / Subject --- p.24 / Instrumentation --- p.25 / Motion Analysis System --- p.25 / School Bag --- p.25 / Experimental Set-up --- p.25 / Procedure --- p.26 / Term Definition --- p.27 / Data Analysis --- p.27 / Results --- p.29 / Ascending Stair --- p.29 / Posture --- p.29 / Effect on Load Weight --- p.29 / Effect on Load Carrying Method --- p.30 / Velocity --- p.30 / Parameters of Lower Extremities --- p.30 / Descending Stair --- p.31 / Posture --- p.31 / Effect on Load Weight --- p.31 / Effect on Load Carrying Method --- p.31 / Velocity --- p.32 / Parameters of Lower Extremities --- p.32 / Trend --- p.32 / Summary --- p.33 / Discussion --- p.35 / Ascending Stair --- p.35 / Posture --- p.35 / Different Load Weights --- p.35 / Different Carrying Methods --- p.39 / Velocity --- p.40 / Descending Stair --- p.42 / Posture --- p.42 / Velocity --- p.46 / Parameters of Lower Extremities --- p.47 / Trend --- p.48 / Back Pain --- p.49 / Recommended Carrying Load Method and Weight for Children --- p.50 / Limitations of the Study --- p.52 / Further Study --- p.53 / Conclusion --- p.56 / References --- p.57 / Appendix --- p.67 / Appendix A - The experimental Set-up --- p.67 / Appendix B - Subject Consent Form --- p.68 / Appendix C - Figures and Tables --- p.71
226

Analyse électrothermique des faisceaux de câbles de puissance : une contribution à l’optimisation des systèmes de distribution d’énergie dans les véhicules routiers à propulsion électrique / Electro-thermal analysis of power cable harnesses : a contribution for the optimization of energy distribution systems in road vehicles with electric drives

Holyk, Christophe 04 December 2014 (has links)
Dans le contexte de la montée des préoccupations écologiques, le développement de véhicules de transports routiers s’oriente vers le développement de véhicules moins polluants à entraînement électrique comme les Véhicules Électriques Hybrides (VEHs) et les Véhicules tout Électriques (VEs). Avec l’augmentation des puissances requises et la réduction de l’espace disponible, la gestion thermique devient une préoccupation de plus en plus importante lors du développement des composants embarqués comme les moteurs/générateurs électriques, onduleurs, batteries et faisceaux électriques. Parmi eux, le faisceau électrique de puissance qui est typiquement composé de câbles électriques, de connecteurs et de boîtes de distribution de puissance ne peut être conçu de manière appropriée qu’à la suite d’une analyse thermique, électrique, chimique et mécanique approfondie.Cette thèse est écrite pour contribuer à l’optimisation de la conception électrothermique de faisceaux de câbles par des simulations afin de réduire la quantité de tests expérimentaux nécessaires pour leur développement. Des modèles théoriques pour la prédiction du comportement électrique et thermique de câbles électriques et des faisceaux de câbles sont passés en revue et adaptés aux exigences automobiles. La validation est accomplie en comparant les résultats de simulation avec ceux d’analyses élément finie (FEA) et de données de mesure. Une partie majeure de cette thèse aborde la simulation thermique de câbles électriques de longueur infinie suspendus dans l’air, prenant en compte les dépendances en température des résistances de conducteurs et la non-linéarité du coefficient de transfert thermique total à la surface du câble. L’influence des courants de blindage et de courants arbitraires dans les conducteurs sur la montée en température des câbles électriques est considérée dans des circuits thermiques équivalents et illustré par des exemples pratiques. / In the context of growing ecological concerns, the development of road transport vehicles moves itself toward the development of less polluting vehicles with electric drives such as Hybrid Electric Vehicles (HEVs) and full Electric Vehicles (EVs). With rising power requirements and reducing available space, thermal management is becoming an increasingly important concern during development of on-board vehicle components such as electric motor(s)/generator(s), power inverter(s), battery pack(s) and cable harnesses. Among them, the cable harness which is typically composed of electrical cables, connectors and power distribution boxes can only be designed properly after a detailed thermal, electrical, chemical and mechanical analysis.This thesis is written to contribute to the optimization of the electro-thermal design of cable harnesses through simulations and reduce the amount of experimental testing needed during their development. Theoretical models for the prediction of the electrical and thermal behavior of electric cables and cable harnesses are reviewed and adapted for automotive requirements. Validation is accomplished by comparing simulation results with Finite Element Analysis (FEA) and measurement data. A major part of this thesis addresses the thermal simulation of electrical cables of infinite length installed in air, taking into account the temperature dependencies of conductor resistances and non-linearity of the total heat transfer coefficient at the cable surface. The influence of shielding currents and arbitrary current loads in the conductors on the temperature rises within electric cables is also considered using thermal ladder networks and illustrated by practical examples. Because shielding currents in vehicles are not only caused by induced currents but also by functional electrical currents generated by low-voltage power sources, new theoretical studies and experimental observations for the estimation of these currents as a function of the vehicle electrical architecture and circuit characteristics are presented. A primary finding reveals that keeping the resistance of grounding connections low compared to that of the shielding connections is an appropriate but expensive means for limiting the transfer of functional currents in the shielding circuits. Finally, a complete and modular model for the prediction of transient temperatures along the length of cable harness sections is developed and validated based on the outcomes of all previous findings.
227

Relations entre diversité des habitats forestiers et communautés de chiroptères à différentes échelles spatiales en Europe : implications pour leur conservation et le maintien de leur fonction de prédation / Relationships between forest habitat diversity and bat communities at different spatial scales in Europe

Charbonnier, Yohan 02 December 2014 (has links)
Les chiroptères sont reconnus comme de potentiels régulateurs des populations d’insectes. Ce sont aussi les mammifères européens pour lesquels les enjeux de conservation sont les plus importants. Ils trouvent dans les forêts des habitats favorables qui sont cependant menacés par les changements climatiques et la fragmentation. Il convient donc de mieux comprendre lesrelations entre les communautés de chiroptères, leurs habitats et leurs proies en forêt. L'objectif de cette thèse est de quantifier les effets, à différentes échelles spatiales, desprincipales composantes de l’habitat forestier sur l’activité, la richesse spécifique, la diversité fonctionnelle et la composition des communautés de chiroptères européens. Les résultats reposent sur des données collectées grâce à des protocoles expérimentaux en Aquitaine et dans les six pays du réseau de placettes forestières organisé par le projet FunDivEurope. De la parcelle au continent, l'accroissement de la diversité des essences forestières, de la proportion de feuillus et du bois mort, en augmentant les ressources en proies et en gîtes, ont des effets positifs sur les communautés de chiroptères. Ces effets, non stationnaires, se renforcent vers le nord avec la rigueur du climat. Nous confirmons également que les chiroptères forestiers, par leur réponse numérique et fonctionnelle aux densités de proie, peuvent limiter la démographie d’un insecte défoliateur. Des mesures de gestion, visant le renforcement des structures-clés des habitats forestiers, sont proposées pour favoriser la conservation des communautés de chiroptères et leur capacité de régulation des insectes ravageurs. / Insectivorous bats are increasingly recognized as potential regulators of pest insect populations.They also represent the group of European mammals with the most unfavorable conservation status. Forests are key habitats for many bat species but are currently under threat from climate change and fragmentation. It is therefore urgent to better understand the relationships between the bats, their prey and their habitats in forests. Our main objective was to quantify the effects, at multiple spatial scales, of the main attributes of forest habitats on the activity, species richness, functional diversity and composition of European bat communities. They were studied using manipulative experiments in Aquitaine plantation forests and automatic recordings in the network of exploratory plots set up in six European countries by the FunDivEurope project. From the plot to the continent scale, increasing tree diversity, amount of broad leaved trees and dead wood, had positive effects on bat communities through an increase in prey and roost resources. However these effects were not stationary, being stronger at higher latitudes, probably due to lower habitat carrying capacity in relation to harsher climatic conditions. In addition we experimentally demonstrated that the numerical and functional responses of bats to prey density could result in effective regulation of pine processionary moth populations. Forest management strategies aim at enhancing key habitat structures, are eventually proposed in order to improve the conservation of bats and to increase the service of pest regulation they can provide.
228

Inequality and Sustainability

Butler, Colin David, Colin.Butler@anu.edu.au January 2002 (has links)
Global civilisation, and therefore population health, is threatened by excessive inequality, weapons of mass destruction, inadequate economic and political theory and adverse global environmental change. The unequal distribution of global foreign exchange adjusted income is both a cause and a reflection of global social characteristics responsible for many aspects of these inter-related crises. ¶ The global distribution of foreign exchange adjusted income for the period 1964-1999 is examined. Using data for more than 99% of the global population, a substantial divergence in its distribution is found. The global Gini co-efficient, adjusted for national income inequality, increased from an already high value of 71% in 1964 to peak at more than 80% in 1995, before falling, very slightly, to 79% in 1999. The global distribution of purchasing parity power income is also examined, for a similar period. Though also found to be extremely unequal, its trend has not been to increased inequality. Implications of the differences between these two trends are discussed. ¶ A weighted time series index of global environmental change (IGEC) for the period 1960-1997 was also calculated. This uses nine categories of global time series environmental data, each scaled so that 100% represents the level of each category in nature prior to anthropogenic change; zero represents decline to a critical point. This index fell from 82% in 1960 to 55% in 1997, and will further decline during this century. ¶ Using evidence from several disciplines, it is argued that the decline in the IGEC correlates with major macro-environmental changes, which, combined with flawed social responses to scarcity and its perception, place at risk the ability of civilisation to function. This could occur because of the interaction of conflict, economically disastrous extreme climatic events, deterioration of other ecosystem services, regional food and water insecurity, and currently unforeseen events. Uncertainty regarding both a safe rate of decline and the tolerable nadir of the IGEC is substantial. ¶ Substantial reduction in the inequality of foreign exchange adjusted income is vital to enhance the development of policies able to reverse the decline in the environmental goods which underpin civilisation, and to promote the co-operation needed to maximise the chance that civilisation will survive.
229

Nonlinear Dust Particle Dynamics and Collective Effects in Complex Plasmas

Sorasio, Gianfranco January 2003 (has links)
<p>Theoretical studies of dusty plasmas have been performed by focusing attention principally on collective phenomena and on grain motion. This thesis consists of a collection of seven published papers that explore both the collective behavior of a complex plasma system as well as the dynamics of grains in plasmas. In paper 1, a mechanism that explains the energy gain which leads to the self excited grain oscillations is theoretically formulated. The newly developed mechanism explains the observed self excited oscillations through the coupling of plasma sheath fluctuations with the electrostatic force, which holds the dust grain. In paper 2, theoretical and simulation studies have been conducted to study the vertical oscillations of dust grains that are levitated in plasma sheaths, under low pressure conditions. The oscillations were driven either by an external force or by a plasma number density modulation. The proposed model gives a full picture of the dust grains dynamics and is capable of successfully explaining the experimental observations. Paper 3 explores both theoretically and numerically the origin of the nonlinearities that lead to the observed oscillation resonances. The feature of the confining potential well which traps the grain, the influence of an electrode voltage modulation on the trapping well, and hence on the grain dynamics, and the resulting nonlinear resonances are analyzed in detail. The numerical simulations presented successfully reproduce a broad range of dynamical phenomena, including the self excited oscillations, for a range of different parameters. Paper 4 is dedicated to the analysis of the propagation of Dust Acoustic Waves (DAW) in a medium with an equilibrium dust density distribution. It has been theoretically shown that only some harmonics of the dust density distribution will influence the propagation of the DAW, thus modifying its frequency. Paper 5 presents a theoretical and numerical analysis of the excitation of higher harmonics of electrostatic dust cyclotron waves. The instability is driven by the ion and electron currents flowing along the magnetic field. The dispersion relation and the wave instability conditions have been derived, and a detailed numerical analysis has been performed. In Paper 6, we explore theoretically some cross field instabilities of low frequency, long wavelength electrostatic modes in fully and weakly ionized plasmas. It is shown that in a magnetoplasma with a transverse equilibrium dc electric field, the energy associated with the cross field motion of the plasma particles can be coupled to low frequency electrostatic waves. Paper 7 explores the properties and instabilities of low frequency electrostatic waves propagating in a current carrying magnetoplasma with equilibrium density and field aligned ion flow with a transverse gradient. The paper contains previous results as limiting cases, together with additional instabilities related to the equilibrium plasma density distribution. </p>
230

Nonlinear Dust Particle Dynamics and Collective Effects in Complex Plasmas

Sorasio, Gianfranco January 2003 (has links)
Theoretical studies of dusty plasmas have been performed by focusing attention principally on collective phenomena and on grain motion. This thesis consists of a collection of seven published papers that explore both the collective behavior of a complex plasma system as well as the dynamics of grains in plasmas. In paper 1, a mechanism that explains the energy gain which leads to the self excited grain oscillations is theoretically formulated. The newly developed mechanism explains the observed self excited oscillations through the coupling of plasma sheath fluctuations with the electrostatic force, which holds the dust grain. In paper 2, theoretical and simulation studies have been conducted to study the vertical oscillations of dust grains that are levitated in plasma sheaths, under low pressure conditions. The oscillations were driven either by an external force or by a plasma number density modulation. The proposed model gives a full picture of the dust grains dynamics and is capable of successfully explaining the experimental observations. Paper 3 explores both theoretically and numerically the origin of the nonlinearities that lead to the observed oscillation resonances. The feature of the confining potential well which traps the grain, the influence of an electrode voltage modulation on the trapping well, and hence on the grain dynamics, and the resulting nonlinear resonances are analyzed in detail. The numerical simulations presented successfully reproduce a broad range of dynamical phenomena, including the self excited oscillations, for a range of different parameters. Paper 4 is dedicated to the analysis of the propagation of Dust Acoustic Waves (DAW) in a medium with an equilibrium dust density distribution. It has been theoretically shown that only some harmonics of the dust density distribution will influence the propagation of the DAW, thus modifying its frequency. Paper 5 presents a theoretical and numerical analysis of the excitation of higher harmonics of electrostatic dust cyclotron waves. The instability is driven by the ion and electron currents flowing along the magnetic field. The dispersion relation and the wave instability conditions have been derived, and a detailed numerical analysis has been performed. In Paper 6, we explore theoretically some cross field instabilities of low frequency, long wavelength electrostatic modes in fully and weakly ionized plasmas. It is shown that in a magnetoplasma with a transverse equilibrium dc electric field, the energy associated with the cross field motion of the plasma particles can be coupled to low frequency electrostatic waves. Paper 7 explores the properties and instabilities of low frequency electrostatic waves propagating in a current carrying magnetoplasma with equilibrium density and field aligned ion flow with a transverse gradient. The paper contains previous results as limiting cases, together with additional instabilities related to the equilibrium plasma density distribution.

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