Thèses sur le sujet « Line shape analysis »
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Gopinath, Sudhir. « Using Color and Shape Analysis for Boundary Line Extraction in Autonomous Vehicle Applications ». Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/35015.
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Autonomous vehicles are the subject of intense research because they are a safe and convenient alternative to present-day vehicles. Human drivers base their navigational decisions primarily on visual information and researchers have been attempting to use computers to do the same.
The current challenge in using computer vision lies not in the collection or transmission of visual data, but in the perception of visual data to extract from it useful information. The focus of this thesis is on the use of computer vision to navigate an autonomous vehicle that will participate in the Intelligent Ground Vehicle Competition (IGVC.)
This document starts with a description of the IGVC and the software design of an autonomous vehicle. This thesis then focuses on the weakest link in the system - the computer vision module. Vehicles at the IGVC are expected to autonomously navigate an obstacle course. Competing vehicles need to recognize and stay between lines painted on grass or pavement. The research presented in this document describes two methods used for boundary line extraction: color-based object extraction, and shape analysis for line recognition.
This is the first time a combination of these methods is being applied to the problem of line recognition in the context of the IGVC. The most significant contribution of this work is a method for extracting lines in a binary image even when the line is attached to a shape that is not a line. Novel methods have been used to simplify camera calibration, and for perspective correction of the image. The results give promise of vastly improved autonomous vehicle performance.Master of Science
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Katamine, Eiji, Hideyuki Azegami et Akiyoshi Okitsu. « Shape Optimization Analysis of Flow Field : Growth-Strain Method Approach ». 日本機械学会, 1994. http://hdl.handle.net/2237/12157.
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Hodson, Joshua D. « Numerical Analysis and Spanwise Shape Optimization for Finite Wings of Arbitrary Aspect Ratio ». DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7574.
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This work focuses on the development of efficient methods for wing shape optimization for morphing wing technologies. Existing wing shape optimization processes typically rely on computational fluid dynamics tools for aerodynamic analysis, but the computational cost of these tools makes optimization of all but the most basic problems intractable. In this work, we present a set of tools that can be used to efficiently explore the design spaces of morphing wings without reducing the fidelity of the results significantly. Specifically, this work discusses automatic differentiation of an aerodynamic analysis tool based on lifting line theory, a light-weight gradient-based optimization framework that provides a parallel function evaluation capability not found in similar frameworks, and a modification to the lifting line equations that makes the analysis method and optimization process suitable to wings of arbitrary aspect ratio. The toolset discussed is applied to several wing shape optimization problems. Additionally, a method for visualizing the design space of a morphing wing using this toolset is presented. As a result of this work, a light-weight wing shape optimization method is available for analysis of morphing wing designs that reduces the computational cost by several orders of magnitude over traditional methods without significantly reducing the accuracy of the results.
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Wang, Tao-Chin Lin. « Part I : Dispersion versus absorption (DISPA) line shape analysis. Part II : Ion trajectories and excitation techniques in fourier transform ion cyclotron mass spectrometry / ». The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487260135355759.
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Tam, Kwong-chuk Stephen. « Determination of C=N bond isomerisation mechanisms in 2, 6-dimethyl-4-aryliminopyrans and their salts by VTNMR using complete line-shape analysis / ». [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12366572.
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COGLIATI, CLELIA. « NMR study of chicken Liver Bile Acid Binding Protein : interaction and dynamics ». Doctoral thesis, Università degli Studi di Verona, 2010. http://hdl.handle.net/11562/343942.
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Il principale obiettivo di questo lavoro di tesi è lo studio del ruolo giocato da un ponte disolfuro sulle proprietà di legame di una proteina citosolica, la Liver Bile Acid Binding Protein (L-BABP), nella quale è naturalmente presente. In particolare si vuole far luce sulle capacità della proteina di legare Acidi Biliari (BA) e sulle sue proprietà funzionali. Gli acidi biliari circolano tra il fegato e l’intestino attraverso un meccanismo definito “circolazione enteroepatica”, il quale è fortemente regolato dagli stessi acidi biliari. Gli acidi biliari sono infatti in grado di influenzare l’espressione di numerosi geni coinvolti nella loro sintesi e nel loro trasporto, mediante un legame con recettori di acidi biliari intracellulari primari, quali il recettore farnesoide X (FXR).
La comprensione del meccanismo che regola l’interazione di trasportatori intracellulari con acidi biliari è un passaggio chiave per la costruzione di un modello rappresentativo del trasferimento di BAs dal citoplasma al nucleo e potrebbe essere utilizzato per lo studio di agenti terapeutici applicabili nel trattamento di disordini metabolici, quali l’obesità, il diabete di tipo 2, l’iperlipidemia e l’aterosclerosi.
Per raggiungere una dettagliata descrizione dal punto di vista molecolare e della dinamica coinvolta nella formazione di un complesso ternario, tra L-BABP e due molecole di acidi biliari, è stata utilizzata la spettroscopia NMR (Nuclear Magnetic Resonance), parallelamente ad un’analisi cinetica e termodinamica, specificatamente implementata per questi studi.
Nello specifico, mediante la Risonanza Magnetica Nucleare, sono state studiate le proprietà strutturali, di interazione e di dinamica di due forme di L-BABP di pollo, diverse tra loro per la presenza/assenza di un ponte disolfuro. Le interazioni proteina/ligando caratteristiche del complesso sono state studiate arricchendo alternativamente la proteina ed il ligando, con isotopi NMR attivi. La proteina è stata titolata aggiungendo concentrazioni sempre crescenti dell’acido glico-colico (GCA) e glico-chenodeossicolico (GCDA), arricchiti in 15N, in modo da poter seguire la variazione delle loro risonanze attraverso l’acquisizione e l’analisi di numerosi spettri NMR (HSQC, DOSY).
I dati ottenuti hanno permesso di determinare la stechiometria di legame e i fenomeni di scambio, ma non sono risultati sufficienti per ricavare informazioni dettagliate sull’affinità, la cooperatività e i meccanismi di legame. Si è quindi deciso di analizzare la variazione dei segnali NMR in funzione della concentrazione di ligando per fare maggiore chiarezza sul meccanismo di interazione tra L-BABP e gli acidi biliari. A questo scopo, sono stati recentemente riportati, nuovi approcci NMR per lo studio delle interazioni proteina/ligandi che avvengono nella scala dei tempi dei micro- e millisecondi, che sfruttano l’analisi delle larghezze di riga ed esperimenti di “relaxation dispersion”. In particolare la combinazione di questi due approcci di indagine si sono rivelati utili per la comprensione della relazione esistente tra dinamica e funzione della proteina.
Studi di rilassamento 15N, effettuati sulla proteina apo, hanno rivelato la presenza di moti lenti, nella scala dei tempi de micro- millisecondi.
La principale domanda a cui si vuole rispondere è se tali moti sono essenziali per il legame con gli acidi biliari, se portano a conformazioni competenti all’inserimento dei ligandi e se sono influenzati dalla presenza del ponte disolfuro.
L’analisi delle larghezze di riga, estratte dagli esperimenti di titolazione, effettuati sulla proteina arricchita isotopicamente in 15N, con successive aggiunte di GCDA, e gli esperimenti di “relaxation dispersion” hanno permesso di individuare un meccanismo di legame a più stadi e di ricavare alcune delle costanti cinetiche coinvolte.The aim of this thesis is to understand the role played by a naturally occurring disulphide bridge on the bile acid (BA) binding and functional properties of cytosolic Liver Bile Acid Binding Protein (L-BABP). Bile acids circulate between liver and intestine through a mechanism defined as “enterohepatic circulation”, which is a tightly regulated process, particularly by BAs themselves. Indeed BAs are able to influence the expression of numerous genes involved in their synthesis and transport by binding to the primary intracellular nuclear bile acid receptor, farnesoid X receptor (FXR). Understanding the mechanism regulating the interactions of intracellular carriers with bile acid is a key step to provide a model for the transfer of BAs from cytoplasm to the nucleus and can be used to inspire design of therapeutic agents in the treatment of metabolic disorders, such as obesity, type 2 diabetes, hyperlipidaemia and atherosclerosis. To achieve a detailed molecular and dynamical description of the binding mechanism driving to the formation of the ternary complex of L-BABPs with two BA molecules, spectroscopic methods together with kinetic and thermodynamic analysis have been applied and implemented. In particular structural, dynamical and interaction properties of two forms of chicken L-BABP (cL-BABP), differing by the presence/absence of a naturally occurring disulphide bridge, have been investigated through nuclear magnetic resonance (NMR) approaches. The study of protein-ligand interactions by NMR was performed analysing complexes where, alternatively, either the protein or the ligand were isotopically labelled. 15N enriched glycocholic (GCA) and glycochenodeoxycholic acid (GCDA), two of the most important members of bile salts pool, were employed for protein titrations and their resonances followed through the acquisition and analysis of several NMR experiments (HSQC, DOSY). The obtained results shed light on binding stoichiometry and ligand exchange phenomena but were not sufficient to derive detailed information on affinity, cooperativity and binding mechanism. Thus NMR lineshape analysis as a function of ligand concentration was chosen as an appropriate tool to investigate the complex interaction mechanism within the cL-BABP/BA system. In this line, new NMR approaches have been recently described which allow a reliable and sensitive investigation of ligand binding events occurring on microsecond to millisecond (μs-ms) time scales using lineshape and relaxation dispersion experiments[1]. Particularly, the combination of these NMR methods can be useful in the study of complex multi-step mechanisms, allowing the correlation between protein dynamics and function[2]. 15N relaxation studies, performed on the apo-protein, revealed the presence of slow motions occurring on the microseconds-milliseconds timescale. The central question to be addressed is here whether these motions are essential for ligand uptake, how they can eventually lead to conformations competent for binding and how they are influenced by the presence of the disulfide bridge. The analysis of titration experiments of 15N labelled protein with unlabelled GCDA through lineshape analysis and relaxation dispersion allowed to define a multi-step binding mechanism for bile salt binding to liver BABPs and to provide an estimate of the kinetics involved.
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Werkander, Harstäde Carina. « Guilt and shame in end-of-life care : the next-of-kin's perspectives ». Doctoral thesis, Linnéuniversitetet, Institutionen för hälso- och vårdvetenskap, HV, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-23637.
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Aim: The overall aim of the thesis was to explore and describe the concepts of guilt and shame and gain a greater understanding of the next-of-kin’s experiences of guilt and shame in end-of-life care. Methods: Study I was a qualitative secondary analysis of 47 interviews with next-of-kin searching for experiences of guilt and shame. In study II a semantic concept analysis of the two concepts guilt and shame was performed. In studies III and IV a hermeneutic approach inspired by Gadamer was used to analyze next-of-kin’s experiences of guilt (Study III), and shame (Study IV) in end-of-life care. Main findings: The concept of guilt focus on behaviour and the concept of shame on the influence on the self. The situation of being next-of-kin in end-of-life care involves a commitment to make the remaining time for the loved one as good as possible. When, for some reason, the commitment cannot be accomplished there is a risk that the next-of-kin experience guilt such as not having done enough, not having been together during important events, not having talked enough to each other, or not having done the right things. Aspects such as not having fulfilled a commitment, omission, and being the cause of can be present in these experiences. The guilt experience has a focus on what the next-of-kin has, or has not done. The experiences of shame are also linked to a perception that the remaining time for the loved one should be as good as possible. Shame can occur when the next-of-kin is involved and actually causes harm to the loved one as well as in situations that are beyond their control. Shame that the next-of-kin experience can also emanate from being put in situations by other people. Feelings of inferiority and powerlessness, second order shame, and family conflicts that are brought into the open are experiences of shame found in the studies as well as ignominy, humiliation, and disgrace. The shame experience has a focus on the next-of-kin’s self. Conclusion: The situation of being next-of-kin in end-of-life care is complex and demanding, something that health professionals should be aware of. Acknowledgement of experiences of guilt and shame can help the next-of-kin in their adaptation to the end-of-life situation as a whole and maybe also give useful tools to support next-of-kin during bereavement.
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Shimomura, Koichiro. « Quantitative trait locus analysis of agronomic traits in weedy cucumber lines for breeding ». Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263362.
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Scott-Wilson, Lorne Harvey. « Equipping christians by identifying their calling : an evaluation of Rick Warren's 'Shape' analysis ». Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-06192009-172945.
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Cooper, Jasmin. « Life cycle sustainability assessment of shale gas in the UK ». Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/life-cycle-sustainability-assessment-of-shale-gas-in-the-uk(692252b3-faab-4428-899c-afbcdeec787a).html.
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This research assesses the impacts of developing shale gas in the UK, with the focus of determining whether or not it is possible to develop it sustainably and how it could affect the electricity and gas mix. There is much uncertainty on the impacts of developing shale gas in the UK, as the country is currently in the early stages of exploration drilling and the majority of studies which have been carried out to analyse the effects of shale gas development have been US specific. To address these questions, the environmental, economic and social sustainability have been assessed and the results integrated to evaluate the overall sustainability. The impacts of shale gas electricity have been assessed so that it can be compared with other electricity generation technologies (coal, nuclear, renewables etc.), to ascertain its impacts on the UK electricity mix. Life cycle assessment is used to evaluate the environmental sustainability of shale gas electricity (and other options), while life cycle costing and social sustainability assessment have been used to evaluate the economic and social sustainability. Multi-criteria decision analysis has been used to combine the results of three to evaluate the overall sustainability. The incorporation of shale gas into the UK electricity mix is modelled in two future scenarios for the year 2030. The scenarios compare different levels of shale gas penetration: low and high. The results show that shale gas will have little effect on improving the environmental sustainability and energy security of the UKâs electricity mix, but could help ease energy prices. In comparison with other options, shale gas is not a sustainable option, as it has higher environmental impacts than the non-fossil fuels and conventional gas and liquefied natural gas: 460 g CO2-Eq. is emitted from the shale gas electricity life cycle, while conventional gas emits 420 g CO2-Eq. and wind 12 g CO2-Eq. The power plant and drilling fluid are the main impact hot spots in the life cycle, while hydraulic fracturing contributes a small amount (5%). In addition to this, there are a number of social barriers which need to be addressed, notably: traffic volume and congestion could increase by up to 31%, public support is low and wastewater produced from hydraulic fracturing could put strain on wastewater treatment facilities. However, the results indicate that shale gas is economically viable, as the cost of electricity is cheaper than solar photovoltaic, biomass and hydroelectricity (9.59 p/kWh vs 16.90, 11.90 and 14.40 p/kWh, respectively). The results of this thesis show that there is a trade-off in the impacts, but because of its poor environmental and social ratings shale gas is not the best option for UK electricity. The results also identify areas for improvement which should be targeted, as well as policy recommendations for best practice and regulation if shale gas were to be developed in the UK.
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Shen, Kai-kai. « Automatic segmentation and shape analysis of human hippocampus in Alzheimer's disease ». Phd thesis, Université de Bourgogne, 2011. http://tel.archives-ouvertes.fr/tel-00703099.
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The aim of this thesis is to investigate the shape change in hippocampus due to the atrophy in Alzheimer's disease (AD). To this end, specific algorithms and methodologies were developed to segment the hippocampus from structural magnetic resonance (MR) images and model variations in its shape. We use a multi-atlas based segmentation propagation approach for the segmentation of hippocampus which has been shown to obtain accurate parcellation of brain structures. We developed a supervised method to build a population specific atlas database, by propagating the parcellations from a smaller generic atlas database. Well segmented images are inspected and added to the set of atlases, such that the segmentation capability of the atlas set may be enhanced. The population specific atlases are evaluated in terms of the agreement among the propagated labels when segmenting new cases. Compared with using generic atlases, the population specific atlases obtain a higher agreement when dealing with images from the target population. Atlas selection is used to improve segmentation accuracy. In addition to the conventional selection by image similarity ranking, atlas selection based on maximum marginal relevance (MMR) re-ranking and least angle regression (LAR) sequence are developed for atlas selection. By taking the redundancy among atlases into consideration, diversity criteria are shown to be more efficient in atlas selection which is applicable in the situation where the number of atlases to be fused is limited by the computational resources. Given the segmented hippocampal volumes, statistical shape models (SSMs) of hippocampi are built on the samples to model the shape variation among the population. The correspondence across the training samples of hippocampi is established by a groupwise optimization of the parameterized shape surfaces. The spherical parameterization of the hippocampal surfaces are flatten to facilitate the reparameterization and interpolation. The reparameterization is regularized by viscous fluid, which is solved by a fast implementation based on discrete sine transform. In order to use the hippocampal SSM to describe the shape of an unseen hippocampal surface, we developed a shape parameter estimator based on the expectationmaximization iterative closest points (EM-ICP) algorithm. A symmetric data term is included to achieve the inverse consistency of the transformation between the model and the shape, which gives more accurate reconstruction of the shape from the model. The shape prior modeled by the SSM is used in the maximum a posteriori estimation of the shape parameters, which is shown to enforce the smoothness and avoid the effect of over-fitting. In the study of the hippocampus in AD, we use the SSM to model the hippocampal shape change between the healthy control subjects and patients diagnosed with AD. We identify the regions affected by the atrophy in AD by assessing the spatial difference between the control and AD groups at each corresponding landmark. Localized shape analysis is performed on the regions exhibiting significant inter-group difference, which is shown to improve the discrimination ability of the principal component analysis (PCA) based SSM. The principal components describing the localized shape variability among the population are also shown to display stronger correlation with the decline of episodic memory scores linked to the pathology of hippocampus in AD.
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Vaughan, Angus A. « Discharge-Suspended Sediment Relations : Near-channel Environment Controls Shape and Steepness, Land Use Controls Median and Low Flow Conditions ». DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/5191.
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We analyzed recent total suspended solids (TSS) data from 45 gages on 36 rivers throughout the state of Minnesota. Watersheds range from 32 to 14,600 km2 and represent a variety of distinct settings in terms of topography, land cover, and geologic history. Our study rivers exhibited three distinct patterns in the relationship between discharge and TSS: simple power functions, threshold power functions, and peaked or negative power functions. Differentiating rising and falling limb samples, we generated sediment rating curves (SRC) of form TSS = aQb, Q being normalized discharge. Rating parameters a and b describe the vertical offset and steepness of the relationships. We also used the fitted SRCs to estimate TSS values at low flows and to quantify event-scale hysteresis.
In addition to quantifying the watershed-average topographic, climatic/hydrologic, geologic, soil and land cover conditions, we used high-resolution lidar topography data to characterize the near-channel environment upstream of gages. We used Random Forest statistical models to analyze the relationship between basin and channel features and the rating parameters. The models enabled us to identify morphometric variables that provided the greatest explanatory power and examine the direction, form, and strength of the partial dependence of the response variables on individual predictor variables. The models explained between 43% and 60% of the variance in the rating curve parameters and determined that Q-TSS relation steepness (exponent) was most related to near-channel morphological characteristics including near-channel local relief, channel gradient, and proportion of lakes along the channel network. Land use within the watershed explained most variation in the vertical offset (coefficient) of the SRCs and in TSS concentrations at low flows.
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Frey, Sibylle D. « Development of new ecological footprint techniques applicable to consumer electronics ». Thesis, Brunel University, 2002. http://bura.brunel.ac.uk/handle/2438/5245.
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In order to extend ecological footprint analysis (EFA) to electronic products, new methods had to be developed which associate the world average bioproductive space per capita and year - the fair Earth share - with an individual product. The problem analysed in this thesis is the need for an environmental assessment tool for electronic products, which uses natural capital accounting. This need arose because so far, electronic products were mainly assessed using life cycle analysis with a focus on toxicity. Since the ecological footprint (EF) is a sustainability indicator, the sustainability discussion and in particular its relevance and implications with regard to the EF is reviewed. The electronic products assessed in this thesis are a personal computer (PC) in an exploratory study, and three mobile phones (two main case studies and one updated case study). To establish the land areas used by the mined materials used in electronic products, a database was developed based on site specific data found in the literature, and on approximations from the density of materials and their overburden. A life cycle energy approach was used to determine the burdens from producing and using a mobile phone. In order to estimate energy requirements for materials for which no data was available, the relationship between abundance and rucksack / overburden values was used in a regression analysis. Direct land use data and results from the energy analysis were used as an inventory for the subsequent EFA. An EF time series was applied to represent a more accurate picture of PC and phone use. This was also necessary since the EF reflects the instantaneous rate (a snapshot) of resource consumption. Key results are that the EF of electronic products are much larger than their actual size and that different electronic products have different EF. Our methodology proved sensitive enough to reveal differences even in small electronic products, given the high benchmark of a fair Earth share, and useful in monitoring space-efficient technology.
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Zhao, Huawei. « Computational models and numerical techniques for solving Maxwell's equations : a study of the heating of lossy dielectric materials inside arbitary shaped cavities ». Thesis, Queensland University of Technology, 1997.
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Petersson, Victor. « Like, share and tag : A comparative study of UNDP Stockholm and UNDP New York’s usage of Facebook as a communication tool ». Thesis, Linnéuniversitetet, Institutionen för samhällsvetenskaper, SV, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-21363.
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The purpose of this research is to study how the UNDP offices in Stockholm and New York are using Facebook to set the agenda regarding the Millennium Development Goals, but also how the offices are communicating and presenting the goals towards the public. The research is based on publications from the two Facebook groups “millenniemålen – åtta mål för en bättre värld” and “United Nations Development Programme – UNDP” published between November 2011 until April 2012. The publications were categorized and analyzed using content analysis, a method that allows categorization of data which enables me to compare the two offices publications rate but also the amount of publications according to which MDG to be in focus. Text analysis of 24 publications allowed me to detect a pattern as well as analysis the two way communication occurring. The text analysis provides an understanding of the how the organizations are working with setting the agenda of the Millennium Development Goals, but also how a relationship is created through communication. The theoretical standpoint for the thesis draws on agenda-setting, strategic communication and Public Relations, also referred to as PR, as the two offices are working with awareness towards the public - a work that need a creation of relationship to the audience. This study shows that the two offices are communicating the Millennium Development Goals differently towards the public, with different results. The New York office are interacting with its followers on Facebook, directing the readers to engage in the set topics through questions and statements and creating dialogues organization to reader but also reader to reader. The UNDP Stockholm is using Facebook as a gateway to their webpage, where information is presented as a news article with little or none chance for the reader to comply. The setting of the agenda is done through the publications, but the publications lack the tools showing if the agenda have been embraced by the readers.Syftet med denna uppsats är att undersöka hur UNDP kontoren i Stockholm och New York använder Facebook för att sätta agendan på millenniemålen, men även visa hur kontoren kommunicerar och presenterar målen till besökarna/följarna av sidorna. Undersökningen är baserad på publikationer gjorda på de två kontorens Facebook sidor “millenniemålen – åtta mål för en bättre värld” och “United Nations Development Programme – UNDP” under tidsperioden november 2011 till april 2012. Publikationerna blev kategoriserade och analyserade med hjälp av innehållsanalys, en metod som genom sin kategoriseringsprocess möjliggör jämförelse mellan de två kontorens sätt att sätta agendan och arbeta med publiken, men även nödvändig information som millenniemål i fokus i enskilda publikationer. Text analys applicerades på 24 publikationer för att mer djupgående förstå hur de två kontoren jobbar för att skapa dialog samt en relation till läsarna genom den satta agendan. Hur UNDP kontoren adresserar läsarna samt överbyggande teman för texterna blev synliga genom denna analys metod. Som teoretisk grund använder jag ”agenda-setting”, strategisk kommunikation samt Public Relations, också refererad till som PR. Båda kontoren har till uppgift att uppmärksamma allmänheten på UNDPs agenda, en uppgift som innebär relationsskapande till sin publik. Resultatet visar att de två kontoren skiljer sig åt när det gäller att kommunicera millenniemålen. New York kontorets interagerande med sin publik genom Facebook, där de skapar dialog kring ett satt ämne mellan organisationen och publiken, men även mellan publiken själv, visar på en fungerande strategi att skapa intresse kring målen. Interaktionen visar även att publiken engagerar sig i de publikationerna som blivit gjorda, med andra ord den agendan som blivit satt. UNDP Stockholm använder Facebook som en ”gateway” till sin hemsida, där informationen blir presenterad som en nyhetsartikel med få inbjudningar till dialog eller chans att respondera . Även om agendan är tydlig i texterna, finns det inga bevis på att läsarna är mottagliga för den.
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Wagner, Victoria Elisabeth [Verfasser], et Manfred [Akademischer Betreuer] Lindner. « Pulse Shape Analysis for the GERDA Experiment to Set a New Limit on the Half-life of Neutrinoless Double Beta Decay of Ge-76 / Victoria Elisabeth Wagner ; Betreuer : Manfred Lindner ». Heidelberg : Universitätsbibliothek Heidelberg, 2017. http://d-nb.info/1180739833/34.
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Svobodová, Veronika. « Kvalita života evropské populace nad padesát let ». Master's thesis, Vysoká škola ekonomická v Praze, 2017. http://www.nusl.cz/ntk/nusl-359605.
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This master thesis deals with research of Subjective Quality of Life for population fifty years old or more, depending on the selected demographic, social and economic indicators. More and more people live to the older ages, and thus important question of living conditions and well being of this ageing population comes forward. General concept of Quality of Life of older people is described on wide theoretical scale with focus on the cause of the phenomenon, Demographic Ageing of populations. The Demographic Ageing is described not only on the theoretical level, but also in a quantitative way. There are specific fertility rates introduced according to an age of a mother while birth giving, or still increasing Life Expectancy at Birth for both males and females. To explore the dependencies of Subjective Quality of Life on selected indicators, there is a statistical model introduced. The input indicators come from the European panel data research Survey of Health, Ageing and Retirement in Europe. Techniques used for analyzing the data are Analysis of variance for one single wave (held around year 2013) and Panel data analysis for all available waves (from 2004 to 2013). The results from both analyses for the Czech Republic are compared with results for selected countries, Germany, Sweden, Spain, Italy and Greece. From the SHARE data set can be read the following results. The variable Age significantly influences all included models for all selected countries, the similar influence can be observed for the Education. For almost all countries and models is proving of the significant influence of Gender to Subjective Quality of Life indefinite (we are not able to observe significant influence). Also the influence of the variable Living alone/with other people is not perfectly convincing. On the other hand, significantly observable categories are Unemployed and Permanently sick or disabled. The question of Quality of Life is related to all parts of population. While the number of older people in population increases, this question of the quality of their lives becomes more and more important. The way how to secure those needed, powerless and often vulnerable people in a decent way and with dignity is not easy.
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Ciomber, Isabelle, et Roland Jakel. « Systematic Analysis and Comparison of Stress Minimizing Notch Shapes : Obtaining a stress concentration factor of Kt=1 without FEM-Code ». Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-141533.
Texte intégralRésumé :
Als Stand der Technik sind einfache, kreisförmige Verrundungen zur Reduktion von Kerbspannungen an Querschnittsübergängen bekannt, für die aus Tabellenwerken / Diagrammen in der Literatur die Formzahl einfach abgelesen werden kann. Die Effizienz der Spannungsreduktion solcher Lösungen ist jedoch sehr begrenzt. Ziel der Arbeit ist es daher, dem Konstrukteur bzw. Berechnungsingenieur ein Verfahren in die Hand zu geben, mit dem er für Standardquerschnittsübergänge und Standardlastfälle "Nicht-Kreiskerben" ohne teure und zeitaufwendige FEM-Analyse einfach durch Nutzung geeigneter Formzahldiagramme auslegen kann. Dabei sind sogar Formzahlen von nahezu eins möglich, d.h., in der "Kerbe" bleibt praktisch nur noch die Nennspannung übrig. Die Präsentation ist zweitgeteilt: Im ersten Teil werden die Arbeitsmethoden bzw. Softwarefunktionen und verwendeten Softwarewerkzeuge vorgestellt: Dies sind die Programme Creo Parametric als vollparametrisches CAD-Werkzeug und Creo Simulate als p-FEM-Programm der Parametric Technology Coprporation (PTC). Der zweite Teil der Präsentation beschreibt den Gültigkeitsbereich sowie die untersuchten Kerbgeometrien: Die einfache kreisförmige Verrundung als Stand der Technik, die Zwei-Radien-Kerbe, die Baud-Kurve, die Methode der Zugdreiecke nach Claus Mattheck, die elliptische Kerbe sowie die konische Rundung als generalisierte elliptische Kerbe. Es wird kurz eine Bibliothek vorgestellt, mit der solche Kerben einfach ausgelegt werden können, d.h. Ihre exakte Geometrie festgelegt sowie die zugehörige Formzahl αk bestimmt werden kannCircular (one-radius) fillets are known as state-of-the-art for reducing notch stresses at cross section transitions. The stress concentration factor Kt of such geometries can be read out from diagrams/tables given in the literature. However, the efficiency of stress reduction of circular notches is very limited. The goal of the work therefor is to present a method for the designer/analyst how to design non-circular notches/fillets just by using suitable Kt-diagrams without time-consuming and expensive FEM analyses. Kt-numbers of nearly one are possible, that means in the "notch" just the nominal stress appears and no stress concentration takes place. The presentation has two parts: Part one describes the working methods and software functions as well as software tools: Creo Parametric as fully-parametric CAD program and Creo Simulate as embedded p-FEM-tool from Parametric Technology Corporation (PTC) have been used. The second part describes the range of validity and the examined notch geometries: The one-radius fillet as state-of-the-art, the two-radii filet, the Baud-curve, the method of tensile triangles from Claus Mattheck, the standard elliptical fillet and the conical round as generalized elliptical fillet. A notch layout library is shortly presented that allows to design such fillets, that means exactly determine the notch geometry and the related stress concentration factor Kt
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Hidalgo, González Guillermo, et António Queirós. « Railway Mobility Hubs : A feature-based investment return analysis ». Thesis, Blekinge Tekniska Högskola, Institutionen för industriell ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-18204.
Texte intégralRésumé :
While there has been considerable research regarding the role of Mobility Hubs in cities and transport networks, significant investment is required to develop these facilities. It is the correlation between investment, new users’ attraction and revenue generation that is the key for a sustainable development of Mobility Hubs and this investment must, therefore, be correctly assessed and targeted. This study aims to develop a methodology to determine the viability of investing in Mobility Hub features, weighing the investment on different Hub features and services against expected potential benefits and revenue generation, addressing the question: Can investment in Mobility Hub features be justified and, if so, which features maximize its expected positive impact? Based on a review of literature and definition of possible Hub features as variables, secondary research data was compiled to enable the analysis of expected impacts of each variable/feature in terms of new user’s attraction and revenue generation, which was then used to develop individual Net Present Value analysis of each feature. The result of these analysis demonstrates and concludes that different Hub features have the potential to generate substantially different investment outcomes, and that each feature should be analyzed individually prior to investment decision. It was also concluded by this research that the proposed assessment methodology can be used for future research on other listed Hub features, albeit with the constraint that primary data will be required when secondary research data is not available.
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Lebret, Alain, et Alain Lebret. « Study on the cerebrospinal fluid volumes ». Phd thesis, Université Paris-Est, 2013. http://tel.archives-ouvertes.fr/tel-00939308.
Texte intégralRésumé :
This work aims to contribute to the lack of computational methods for medical image analysis and diagnosis about the study of cerebrospinal fluid volumes. In the first part, we focus on the volume assessment of the fluid spaces, from whole body images, in a population consisting of healthy adults and hydrocephalus patients. To help segmentation, these images, obtained from a recent "tissue-specific" magnetic resonance imaging sequence, highlight cerebrospinal fluid unlike its neigh borhood structures. We propose automatic segmentation and separation methods of the different spaces, which allow efficient and reproducible quantification. We show that the ratio of the total subarachnoid space volume to the ventricular one is a proportionality constant for healthy adults, to support a stable intracranial pressure. However, this ratio decreases and varies significantly among patients suffering from hydrocephalus. This ratio provides a reliable physiological index to help in the diagnosis of hydrocephalus. The second part of this work is dedicated to the fluid volume distribution analysis within the superior cortical subarachnoid space. Anatomical complexity of this space induces that it remains poorly studied. We propose two complementary methods to visualize the fluid volume distribution, and which both produce two-dimensional images from the original ones. These images, called relief maps, are used to characterize respectively, the fluid volume distribution and the fluid network, to classify healthy adults and patients with hydrocephalus, and to perform patient monitoring before and after surgery
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Essafi, Salma. « 3D Knowledge-based Segmentation Using Sparse Hierarchical Models : contribution and Applications in Medical Imaging ». Phd thesis, Ecole Centrale Paris, 2010. http://tel.archives-ouvertes.fr/tel-00534805.
Texte intégralRésumé :
CETTE thèse est consacrée à la conception d'un système d'aide au diagnostic dédiéau muscle squelettique humain. Au cours du premier volet de ce manuscrit nousproposons une nouvelle représentation basée sur les modèles parcimonieux dans le cadrede la segmentation d'Images de Résonances Magnétiques (IRM) T1 du muscle squelettiquedu mollet. Notre méthode Sparse Shape Model/ Modèle de Formes Parcimonieux(MFP), apprend un modèle statistique de formes et de textures locales annoté et réussità en tirer une représentation réduite afin de reconstruire le mécanisme musculaire sur unexemple test. Dans la seconde partie du manuscrit, nous présentons une approche baséesur des ondelettes de diffusion pour la segmentation du muscle squelettique. Contrairementaux méthodes de l'état de l'art, notre approche au cours de la phase d'apprentissagepermet à optimiser les coefficients des ondelettes, ainsi que leur nombres et leur positions.Le modèle prend en charge aussi bien les hiérarchies dans l'espace de recherche,que l'encodage des dépendances géométriques complexes et photométriques de la structured'intérêt. Notre modélisation offre ainsi l'avantage de traiter des topologies arbitraires.L'évaluation expérimentale a été effectué sur un ensemble de mollets acquisespar un scanner IRM, ainsi qu'un ensemble d'images tomodensitométriques du ventriculegauche.
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Casero, Cañas Ramón. « Left ventricle functional analysis in 2D+t contrast echocardiography within an atlas-based deformable template model framework ». Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:b17b3670-551d-4549-8f10-d977295c1857.
Texte intégralRésumé :
This biomedical engineering thesis explores the opportunities and challenges of 2D+t contrast echocardiography for left ventricle functional analysis, both clinically and within a computer vision atlas-based deformable template model framework. A database was created for the experiments in this thesis, with 21 studies of contrast Dobutamine Stress Echo, in all 4 principal planes. The database includes clinical variables, human expert hand-traced myocardial contours and visual scoring. First the problem is studied from a clinical perspective. Quantification of endocardial global and local function using standard measures shows expected values and agreement with human expert visual scoring, but the results are less reliable for myocardial thickening. Next, the problem of segmenting the endocardium with a computer is posed in a standard landmark and atlas-based deformable template model framework. The underlying assumption is that these models can emulate human experts in terms of integrating previous knowledge about the anatomy and physiology with three sources of information from the image: texture, geometry and kinetics. Probabilistic atlases of contrast echocardiography are computed, while noting from histograms at selected anatomical locations that modelling texture with just mean intensity values may be too naive. Intensity analysis together with the clinical results above suggest that lack of external boundary definition may preclude this imaging technique for appropriate measuring of myocardial thickening, while endocardial boundary definition is appropriate for evaluation of wall motion. Geometry is presented in a Principal Component Analysis (PCA) context, highlighting issues about Gaussianity, the correlation and covariance matrices with respect to physiology, and analysing different measures of dimensionality. A popular extension of deformable models ---Active Appearance Models (AAMs)--- is then studied in depth. Contrary to common wisdom, it is contended that using a PCA texture space instead of a fixed atlas is detrimental to segmentation, and that PCA models are not convenient for texture modelling. To integrate kinetics, a novel spatio-temporal model of cardiac contours is proposed. The new explicit model does not require frame interpolation, and it is compared to previous implicit models in terms of approximation error when the shape vector changes from frame to frame or remains constant throughout the cardiac cycle. Finally, the 2D+t atlas-based deformable model segmentation problem is formulated and solved with a gradient descent approach. Experiments using the similarity transformation suggest that segmentation of the whole cardiac volume outperforms segmentation of individual frames. A relatively new approach ---the inverse compositional algorithm--- is shown to decrease running times of the classic Lucas-Kanade algorithm by a factor of 20 to 25, to values that are within real-time processing reach.
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Sfikas, Giorgos. « Modèles statistiques non linéaires pour l'analyse de formes : application à l'imagerie cérébrale ». Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00789793.
Texte intégralRésumé :
Cette thèse a pour objet l'analyse statistique de formes, dans le contexte de l'imagerie médicale.Dans le champ de l'imagerie médicale, l'analyse de formes est utilisée pour décrire la variabilité morphologique de divers organes et tissus. Nous nous focalisons dans cette thèse sur la construction d'un modèle génératif et discriminatif, compact et non-linéaire, adapté à la représentation de formes.Ce modèle est évalué dans le contexte de l'étude d'une population de patients atteints de la maladie d'Alzheimer et d'une population de sujets contrôles sains. Notre intérêt principal ici est l'utilisationdu modèle discriminatif pour découvrir les différences morphologiques les plus discriminatives entre une classe de formes donnée et des formes n'appartenant pas à cette classe. L'innovation théorique apportée par notre modèle réside en deux points principaux : premièrement, nous proposons un outil pour extraire la différence discriminative dans le cadre Support Vector Data Description (SVDD) ; deuxièmement, toutes les reconstructions générées sont anatomiquementcorrectes. Ce dernier point est dû au caractère non-linéaire et compact du modèle, lié à l'hypothèse que les données (les formes) se trouvent sur une variété non-linéaire de dimension faible. Une application de notre modèle à des données médicales réelles montre des résultats cohérents avec les connaissances médicales.
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Boyd, Roger F. « Modes of thought in secondary school art ». Thesis, Queensland University of Technology, 1999. https://eprints.qut.edu.au/36645/1/36645_Digitised%20Thesis.pdf.
Texte intégralRésumé :
There is an emphasis in current school education on the teaching of thinking skills, yet there has been little research into the modes of thought that are appropriate for
secondary school Art students. A range of qualitative methods were used in this study of eminent professional artists and secondary school Art students. Interviews and observation were used to examine the ways artists and students think in going about the art process of finding ideas, conceptualising or developing those ideas and resolving those ideas in the production of artworks. Eight modes of thought, each with numerous micro-skills, were derived from the data. The modes of thought proposed are Creative Thinking, Intuitive Thinking, Life Theme, Metaphorising, Visual Thinking,
Conceptualisation, Critical Thinking and Reflective Thinking.
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Zeringue, Kathryn Ellen. « Demographic shift share analysis : long-term demographic change along the DART Red Line ». Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-05-5322.
Texte intégralRésumé :
This report explores the long-term demographic changes occurring near Dallas Area Rapid Transit (DART) stations. The study area chosen to employ the shift share method consists of two segments of DART stations along the Red Line in Dallas, Texas. The downtown DART study area consists of census tracts surrounding light rail stations: Cedars, Convention Center, Union Station, West End, Akard, St. Paul, and Pearl, and the DART suburban study area consists of census tracts around the following stations: City Place, Mockingbird Station, Lovers Lane, Park Lane, Walnut Hill, Forest Lane, and LBJ/Central. Using the shift share method with demographic data obtained through the US Census Bureau from 1990 and 2005-2009 American Community Survey estimates, this analysis illustrates demographic changes over time as a result of light rail transit investments.
The results indicate that demographic characteristics of residents have changed considerably since the introduction of light rail in Dallas. Although the growth trends in the DART neighborhoods are comparable to the growth trends of the city, the DART census tracts on average have experienced greater increases in population, attracted an influx of highly educated residents with higher household incomes, and experienced significant increases in high-density development surrounding transit stations. For the most part, growth has been stronger locally than on a citywide level, and these trends have occurred most noticeably in the downtown DART neighborhoods, where transit and financial measures have sparked a development boom in which total population and housing units have grown by the hundredth and even thousandth percentile. Additionally, these demographic changes create unintended consequences that affect people of varying socio-economic statuses. Although the shift of highly educated, wealthier individuals in neighborhoods creates a greater social mix among residents, lower-income residents of these transit neighborhoods quickly get priced out of their neighborhoods.text
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Lü̈ssi, Kevin M. « A study and implementation analysis of an anti-sagging device for power transmission lines using shape memory alloys / ». 2009. http://hdl.handle.net/10413/934.
Texte intégral
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« A study and implementation analysis of an anti-sagging device for power transmission lines using shape memory alloys ». Thesis, 2010. http://hdl.handle.net/10413/764.
Texte intégral
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Wang, Jyng-Siang, et 王俊祥. « Fast Ensemble Empirical Mode Decomposition for Speech-Like Signal Analysis Using Shaped Noise Addition ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/7b33hc.
Texte intégralRésumé :
碩士國立臺灣科技大學
電子工程系
99
In Signal Processing, Empirical mode decomposition (EMD) is one of the useful approaches for processing nonlinear and nonstationary signals. It is adaptive to input signal and could decompose signal straightly in time domain. However, its shortcomings include mode mixing and end effects that usually appear in the decomposed bands. Although a noise-assisted data analysis (NADA) called ensemble empirical mode decomposition (EEMD) has been proposed to circumvent this problem, doing so also results in an inevitably long computation for alleviating the mode mixing. In this paper, we use shaped noise instead of white noise as a disturbance for a fast convergence of EEMD. The signal-spectrum-dependent noise (SSDN) is able to effectively randomize the targeted signal in time domain, and then significantly save the superfluous calculation around the corresponding energy-free frequencies. The experimental results also show that both pink noise and brown noise outperform the white noise in terms of computation for the EEMD of speech-like signal.
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Jhu, Yan-Jing, et 朱彥璟. « Design and Analysis of Parameters for Shaped Charge Liner of Armor-piercing using the Taguchi Method ». Thesis, 2012. http://ndltd.ncl.edu.tw/handle/fzpurs.
Texte intégralRésumé :
碩士國立臺北科技大學
機電整合研究所
100
In order to study the shaped jet perforation effect on the steel plate after the explosion of the liner of armor-piercing’s shaped charge detonated, the commercial finite element analysis software were used to do the numerical simulation of structure of the liner from the initiation of jet forming to perforating the target plate. The liner structural parameters considered in this paper were the cone angle, wall thickness, fried and initiation point and the parametric effect on Sunder were also analyzed, and finally the Taguchi method step by step analysis was used to study the influence of various factors on jet forming process and find the best solution for effective perforating depth. The results of analysis showed that the initiation point was the most significant factor considered and had nearly 22.61% contribution. The perforated effect decreases as the initiation point move from edge to the center. The wall thickness accounted for 11.09% effect on perforating depth. Based on the results, we can make a better shaped charge liner design in the subsequent application.
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Jandáková, Miriam. « Tvarová plasticita velevruba tupého (Unio crassus, Unionidae) v závislosti na lokalitě a velikostních proměnných ». Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-351233.
Texte intégralRésumé :
This thesis focuses on shell shape plasticity of Unio crassus at 12 localities. 1129 shape outlines were used for the purposes of this work. The outlines were gained from 260 individuals in the way of analysing the winter growth lines. The Elliptic Fourier Analysis appeared to be reasonable tool for the bivalves' shells shapes assessment. The winter growth lines' consideration showed great potential for morphometric analyses. The results shows that PC1 and PC2 axes (from principal component analysis of shape coeficients) are growth- dependent. The allometry influence was removed by residual values assessment obtained from generalized linear model (GLM). The age, length and width parameters appears to be favourable combination for general allometry influence removal (by using these parameters as describing variables in GLM model). The results point to significant differences among localities in all assessed parameters. Furthermore, the significant difference in growth speed was approved. Speed growth indicator correlates with shape variables. The localities can be divided into two groups with different growth speed each (Bertalanffy growth constant, length in the third year and age relative length). These groups differs in about 10 mm in average lengths. The most similar localities were "Blanice...
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Yu, Chih-Wei, et 余致緯. « The Characteristics of Higher Order Modes Analysis on Non-Centrosymmetric Geometric Shape and Bowtie-Like with Both Ag/Si or Metal/Insulator/Metal Tri-layer Structures ». Thesis, 2012. http://ndltd.ncl.edu.tw/handle/79577595741477016699.
Texte intégralRésumé :
碩士國立臺灣大學
電子工程學研究所
100
The thesis discussed the higher order modes enhancement on non-centrosymmetric, double apertures and bowtie-like hole array by experimental and simulation results. Considering the extraordinary transmission on these two types hole array, higher order modes were measured and calculated directly. In non-centrosymmetric hole array, trumpet shape hole array was investigated in the relation between main peaks and length of X. By varying the periodic parameter Px, the interaction between Wood’s anomaly and LSRs were shown clearly. Also, double LSRs are shown in MIM structure in shorter and longer wavelength. Double apertures sample perforated with Ag film were investigated. Besides the strong enhancement in bowtie structure [86], the experiment provide a novel way to stimulate higher order modes enhancement in different geometric figures such as double circles and double pentagons. Within double apertures structure such as circles and square, experiment results show the strong enhancement on (3,0) and (4,0) Ag/Si mode. Bowtie-like samples also provide higher order mode transmission. By replacing one of the bowtie triangles with circle, square, and rotation triangle, experiments show that the second order mode still being stimulated highly than fundamental mode. Also, double bowtie samples in orthogonal direction were investigated. Experiment results show that (2,2) Ag/Si mode stimulated more than fundamental mode and the (2,0) Ag/Si mode.
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Mbatha, Khonzanani. « Sex workers as free agents and as victims : elucidating the life worlds of female sex workers and the discursive patterns that shape public understanding of their work ». Thesis, 2019. http://hdl.handle.net/10500/26840.
Texte intégralRésumé :
In South Africa and many other countries worldwide, sex work is criminalised. This
invariably seems to lead to back-door prostitution - an unregulated industry where sex
workers are vulnerable to being exploited by pimps, brothel owners and law enforcement
officers. In discussions about sex work and sex workers, two dominant views are evident: a)
Sex workers freely choose to sell sex as a good way of earning an income; or b) sex workers
are victims of their circumstances who are driven into the industry through direct coercion or
as a result of dire poverty. Together, these views lead to an ideological trap in terms of which
sex workers have to be perceived either as having agency and free will or as being helpless
victims in need of rescue. My aim in this thesis was to problematise, deconstruct and
reconstruct the discursive field within which sex work is embedded, in order to move beyond
agency-victimhood and similar binaries, and in the hope of developing new ways of talking
about prostitution that acknowledge the complexity of the sex industry rather than
shoehorning it into preconceived categories. Social constructionism (epistemology), critical
social theory (ontology) and discourse analysis (methodology) were interwoven in order to
provide a broad, critical understanding of prostitution. Two data sources were used to gain
access to and unpack the life worlds of sex workers: Semi-structured interviews with five sex
workers in Johannesburg and the “Project 107” report on adult prostitution in South Africa.
Foucauldian discourse analysis was used to make sense of the data, including an analysis of
how concepts such as governmentality, power, confession, surveillance and technologies of
the self can be applied to contemporary texts about prostitution. The “Project 107” report
recommended that prostitution should not be decriminalised, and that sex work should in fact
not be classified as work; instead, it proposed a ‘diversion programme’ to help sex workers
exit the industry. I show how, in doing this, the report appears to hijack feminist discourses about sex workers as victims in order to further a conservative moral agenda. The sex
workers I spoke to, on the other hand, demonstrated an ability to take on board, and to
challenge, a variety of different discourses in order to talk about themselves as
simultaneously agentic and constrained in what they can do by unjust social structures. I
show how, from a Foucauldian perspective, sex workers can be seen not as pinned down at the bottom of a pyramid of power, but immersed in a network of power and knowledge,
enabled and constrained by ‘technologies of the self’ to assist in policing themselves through
self-discipline and self-surveillance to become suitably docile bodies within the greater
public order.Psychology
D. Litt. et Phil. (Psychology)
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Chen, Guan-Chih, et 陳冠志. « A Study on the Financial/Business Performance and Market Share of Non-Life Insurance Industry in Taiwan－An Application of Multivariate Analysis and Panel Data Regression ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/18564492868340529543.
Texte intégralRésumé :
博士國立高雄第一科技大學
管理研究所
99
This research explores the effect of financial and business performance to market share of non life insurance companies in Taiwan from 2005 to 2009. First, apply factor analysis to extract seventeen financial ratios into four factors which are defined as “risk assumption ability,” “investment performance,” “underwriting quality,” and “business ability.” The factor scores are calculated for the comparison of financial and business performance between domestic and foreign companies, under different systems, before and after financial crisis by One-Way ANOVA. The results find out the risk assumption ability, investment performance of domestic companies are significantly superior to foreign companies, but domestic companies in risk assumption ability aren’t as good as foreign companies. The investment performance of non-life insurance companies under financial holding system is superior to non-financial holding system. The Hausman test is applied to find the appropriate model for panel data regression is fixed effects model. This study first examine whether the regression models have structural change caused by financial crisis and find out the financial crisis does not affect the relationship between the four performance indices and market share in both models. The parameter estimate of fixed effects model show that the only difference is that domestic companies have higher market shares than foreign companies. The results also show that the “risk assumption ability”, “underwriting quality” and “business ability” significantly affect market share in financial holding system and non-financial holding system, but “investment performance” does not affect market share under different systems.
34
Brennan, Shelagh Marie. « A narrative inquiry of older adults' stories of choosing to not share information with health care professionals ». Thesis, 2008. http://hdl.handle.net/1828/1307.
Texte intégralRésumé :
This study used narrative inquiry to answer the question “What are the stories of older adults who choose not to share information with health care professionals?” The study explored the experiences of older adults who did not share information with health care professionals (HCPs), who they defined as doctors. A thematic analysis of five participants’ stories revealed three themes: Illusions of Care, describing the participants’ experiences with doctors before they chose not to share information; The Last Straw, revealing the final incident that caused participants to choose not to share information; and The Mask of the Non-sharing Older Adult, describing how participants interacted with their doctors after they decided not to share information. Relationship development between older adults and their doctors, sensitive topics, issues and perceptions of ageing, and structure of the health care system contribute to the complex issue of older adults not sharing information. The decision not to share information with health care professionals may adversely affect the health and health care of older adults.
35
Ile, Anthony. « Petrophysics and fluid mechanics of selected wells in Bredasdorp Basin South Africa ». 2013. http://hdl.handle.net/11394/3573.
Texte intégralRésumé :
Magister Scientiae - MScPressure drop within a field can be attributed to several factors. Pressure drop occurs when fractional forces cause resistance to flowing fluid through a porous medium. In this thesis, the sciences of petrophysics and rock physics were employed to develop understanding of the physical processes that occurs in reservoirs. This study focussed on the physical properties of rock and fluid in order to provide understanding of the system and the mechanism controlling its behaviour. The change in production capacity of wells E-M 1, 2, 3, 4&5 prompted further research to find out why the there will be pressure drop from the suits of wells and which well was contributing to the drop in production pressure. The E-M wells are located in the Bredasdorp Basin and the reservoirs have trapping mechanisms of stratigraphical and structural systems in a moderate to good quality turbidite channel sandstone. The basin is predominantly an elongated north-west and south-east inherited channel from the synrift sub basin and was open to relatively free marine circulation. By the southwest the basin is enclose by southern Outeniqua basin and the Indian oceans. Sedimentation into the Bredasdorp basin thus occurred predominantly down the axis of the basin with main input direction from the west. Five wells were studied E-M1, E-M2, E-M3, E-M4, and E-M5 to identify which well is susceptible to flow within this group. Setting criteria for discriminator the result generated four well as meeting the criteria except for E-M1. The failure of E-M1 reservoir well interval was in consonant with result showed by evaluation from the log, pressure and rock physics analyses for E-M1.iv Various methods in rock physics were used to identify sediments and their conditions and by applying inverse modelling (elastic impedance) the interval properties were better reflected. Also elastic impedance proved to be an economical and quicker method in describing the lithology and depositional environment in the absence of seismic trace.