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Drott, Ingemar. "Ambiguities and Limited Expressiveness in the Use Case Notation." Thesis, University of Skövde, Department of Computer Science, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-621.
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UML and use case modeling have the last few years received much attention. Use cases are used to describe the functional requirements of a system and a use case diagram shows the relationships among use cases and actors within a system. The semantics of use case diagrams are, however, often unclear. The aim of this dissertation is to point out ambiguities and limited expressiveness present in the current use case notation of UML and to indicate in which directions remedies to these deficiencies may be sought.
Problems reported by researchers were identified and presented to a set of use case practitioners. Then a proposal of possible improvements of the use case notation, which should reduce the ambiguities and increase the expressiveness in the notation, was developed. To place some measurements on the value the proposal can have in practice, it was also presented to a set of practitioners.
The proposal provides a suggestion of how to model various tricky situations in a use case diagram. Furthermore, the dissertation gives insight on how the use case technique is used in practice. Practitioners argue that the use case specifications are more important than the use case diagrams. They also argue that the purpose of use case diagrams is to describe a system's main functionalities and not details, and that as few use case relationships as possible should be used in use case diagrams.
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Prevatt, Margaret B. "Fit and sizing evaluation of limited-use protective coveralls." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07102007-142516/.
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Neff, Curtis Evans. "A limited taxonomy on the use of humor in biblical exposition." Theological Research Exchange Network (TREN), 1987. http://www.tren.com.
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Thomas, Diakima Y. "The Relationship Between Limited Partner Availability, Masculine Ideologies, and Condom Use." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7087.
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One in every 4 people living with the Human Immunodeficiency Virus (HIV) are women. The leading cause of infection is heterosexual contact. The purpose of this quantitative, correlational study was to examine the relationship between gender ratio perception and masculine ideology and a woman's decision to use condoms during her sexual activity. The theory of gender and power and the theory of planned behavior served as the theoretical frameworks for this study. The perceptions of gender ratios, as measured by the Gender Ratio Imbalance Beliefs and Behaviors Scale (GRIBBS) subscale, GRIBeliefs, and masculine ideologies, as measured by the Gender Role Beliefs Scale (GRBS), served as independent variables, while condom use behaviors, as measured by the Gender Ratio Imbalance Beliefs and Behaviors Scale (GRIBBS) subscale, GRIBehaviors, served as the dependent variable. Covariates included demographic factors, as well as behavioral factors. A purposeful, convenience sample (n=55) via the Walden University research pool was utilized, enabling researchers to use readily available data that represented college educated women. Descriptive statistics, independent t-tests, correlational analysis, as well as multiple linear regression were used to examine the aforementioned perceptions of study participants. Correlation analyses and multiple regression indicated no statistically significant correlations between gender ratio imbalance, masculine ideology, and condom use, while controlling for race, employment status, religion, religious devoutness, sexual orientation, relationship status, STD history (self), and partner STD history. Social change is indicated via the results illustrating the possible empowerment of women regarding their sexual health.
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Linghu, Hao. "An investigation on the limited innovation performance in automotive IJVs in China." Thesis, University of Warwick, 2018. http://wrap.warwick.ac.uk/113458/.
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China has been experiencing constraints to the sustainable development of its domestic economy in recent years due to a reliance on a low value-added oriented economy. The enhancement of innovation among local firms is, therefore, being encouraged by the Chinese government. The Chinese government regards the automotive industry as one of its strategic industries yet the local automotive firms in China still remain relatively under-developed due to a limited independent innovation capacity. Therefore, the enhancement of an indigenous innovation capacity in the automotive industry is badly needed. Favourable policies have been applied in the automotive sector in order to support the technological development of local automotive firms which includes the constraints on foreign direct investment (FDI) in the automotive sector. Automotive multinational corporations (MNCs) are strictly required to establish international joint ventures (IJVs) with local automotive firms and can own no more than a 50% share in an IJV. The logic behind this is to protect the local automotive firms and allow them access to the technological resources of the MNCs and the opportunity for organisational learning. This logic is supported by current literature as IJVs are, arguably, able to deliver innovation outputs through direct access to the resources of the parent companies and the interpartner learning effects. Despite this, real-life examples suggest a limited innovation performance in the automotive IJVs in China. The innovation achievements are largely limited to minor changes to established products and some new products based on existing technologies. Whilst there is little technological innovation apparent in the automotive IJVs in China, there is evidence of this emerging from local automotive firms without the assistance of an IJV partnership. This PhD thesis explores the underlying reasons for the gap between current academic theory and the reality in the automotive industry. Qualitative case studies of three Chinese automotive IJVs and one independent local automotive firm with a reputation for innovation were conducted to investigate the factors that limit innovation activities in automotive IJVs. The findings of this research suggest that the IJV partnership itself is a constraining factor in the context of the Chinese automotive industry. This is because the nature of automotive IJVs in China lead to a lack of strategic focus on innovation and the IJVs follow a closed innovation paradigm as they only benefit from the limited resources of their parent companies, with little or no access to other external resources. Furthermore, the mismatch of the technological capabilities causes ineffectiveness in the utilisation process of the transferred resources. This research contributes to knowledge by explaining the gap between current theories on IJV and the reality within the industry. Furthermore, a revised model of knowledge management is proposed in the context of IJVs. In light of the main research findings, recommendations are made regarding the policy and practice of using IJV partnerships for the enhancement of innovation capacity among Chinese firms.
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Aldea-Corrales, Aranzazu A. "The use of scheduling and hierarchical modelling techniques for time-limited diagnosis." Thesis, Heriot-Watt University, 1994. http://hdl.handle.net/10399/1376.
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Manker, Concetta. "Factors Contributing to the Limited Use of Information Technology in State Courtrooms." ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/1416.
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Few state courtrooms in the United States have integrated information technology (IT) in court trials. Despite jurors' beliefs that using courtroom technology improves their abilities to serve as jurors, the attitudes and experiences among attorneys and judges toward the utility of IT continue to pose barriers. The purpose of this phenomenological study was to explore and describe the experiences of attorneys and judges in the State of Virginia with regard limited use of IT in state courtrooms. The conceptual framework included Davis, Bagozzi, and Warshaw's (1989) technology acceptance model; Rogers's (2003) diffusion of innovation theory; and Venkatesh, Morris, Davis, and Davis's (2003) unified theory of acceptance. A snowball sample of 22 attorneys and judges were interviewed using in-depth, semistructured questions. Data were analyzed using open coding techniques to identify themes and patterns with findings supporting the need for improved and expanded courtroom technology. Finding showed that attorneys and judges believed courtroom technology could be useful; however, the lack of training and the cost to implement technology limited their use of technology in courtrooms. Implications for positive social change include increasing the adoption rate of courtroom technology to support courtroom processes and empowering courts to improve the quality of justice through technology in an efficient and effective manner, thereby benefiting everyone in the judicial system and the public.
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Green, Christopher Terrence. "An analysis of the use of limited real rights in tax planning." Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/809.
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The aim of this treatise is to provide an analysis of the tax implications of making use of limited real rights in tax planning. In order to understand the tax implications of making use of limited real rights it is necessary to understand the nature and legal form of these rights. The importance of this understanding lies in the determination of the tax legislation applicable to the right in question, and the subsequent tax implications. The next step in working through an analysis of the tax implications of making use of limited real rights is therefore to define the scope of applicable legislation. This required an analysis of the scoping provisions of our tax legislation. Once the scope of applicable legislation had been defined, it was then possible to move onto an analysis of the application of the legislation identified to the various “stages” of limited real rights. The conclusion from this analysis is that the tax implications of making use of limited real rights are spread fairly broadly across several different pieces of legislation, and need to be carefully and fully considered when making a decision to make use of limited real rights in a tax planning strategy. The conclusion on the analysis of certain selected tax planning strategies that make use of limited real rights is that it is possible to make fairly substantial cash flow savings when deciding to implement a particular strategy which makes use of limited real rights. But, that use of these strategies is not without risk. For example, SARS may examine a particular strategy in terms of the “new” GAAR. The financial implications of the successful application of the GAAR may be disastrous to the taxpayer, and the tax planner will need to have considered and advised on the possibility of such a challenge from SARS. In addition, in some of the strategies, there are risks associated with the anticipated life expectancy of parties to the tax plan being shorter than anticipated. The conclusion is that the use of limited real rights in tax planning can be effective and provide savings, but that the use of such a strategy requires, inter alia, a very careful consideration of the interaction and application of our tax legislation to the strategy.
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vellakovil, kanaka vel sudan, and Arokia Robertson Arputham. "Factors influencing SME industries with limited resources:On when to use BI dashboard tools." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH. Forskningsmiljö Informationsteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-20946.
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Hennessey, Ann M. "Use of physiological and perceptual dimensions of clothing comfort to evaluate nonwoven protective fabrics through wear testing of limited-use coveralls." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/45213.
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The purpose of this research was to identify nonwoven protective fabrics designed to have improved comfort properties over a fabric currently used in limited-use chemical protective clothing by using physiological and perceptual dimensions of comfort. Fabrics that are both waterproof and breathable have potential for use in chemical protective clothing by repelling liquid while allowing the diffusion of moisture vapor from the body. Microporous laminated fabrics used in chemical protective clothing allow moisture to evaporate from the body and move through the fabric while preventing liquid chemicals from coming in contact with the skin. Five fabric types were evaluated by wear testing coveralls and measuring selected physiological and perceptual responses of five subjects performing moderate-intensity exercise in thermoneutral and hot, humid environments. Physiological responses included skin temperature, body temperature, heart rate, sweat rate, and fluid loss. Perceptual responses included moisture sensation, thermal sensation, Rating of Perceived Exertion, and overall comfort. In the thermoneutral environment, results show heart rate to be the only variable affected by the different fabric types, while time effect was significant within all dependent variables. In the hot, humid environment, skin and body temperatures were significantly affected by fabric type, while time effect was significant within all variables except skin temperature. The environment effect was significant within all dependent variables except RPE and heart rate. Based on the statistical insignificance of subjects' overall comfort responses in both environments, it can be said that the differences in the physical characteristics of the fabrics may not be great enough to affect the wearer's comfort level. However, two of the four fabrics were determined to have potential for further investigation. Further research comparing experimental fabrics with fabrics used widely in industry will continue the effort of improving the comfort of limited-use protective clothing.Master of Science
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Trejo, Lizama Wilbert. "Strategies to improve the use of limited nutrient resources in pig production in the tropics." Kassel : Kassel Univ. Press, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=982035101.
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Checon, Bianca Quirantes. "Limited attention, the use of accounting information and its impacts on individual investment decision making." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/12/12136/tde-24082018-153805/.
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As technology and capital markets complexity increases, so does the amount of accounting information disclosed by companies in their financial reports. Nowadays, we reached an impasse, where it is questionable if more information will in fact reduce information asymmetry. Previous authors strongly criticize the length of financial statements and annual reports, arguing that they should communicate more rather than just be voluminous as the current volume of information can be counterproductive to the average individual to acquire, retain and process all available information. Based on evidence of previous accounting literature on presentation format and the psychology theories of attribution theory and cognitive load theory, we hypothesize that, by manipulating accounting information using a more general accessible format such as the narrative one, individual investors are able to better understand accounting information and, thereafter, make a more effective use of it versus the concurrent non-fundamental information available in a standard investment decision making setting. To achieve our research goal, we use a mixed method research strategy with an Exploratory Sequential Design: the qualitative method act as a preparation for the quantitative one. Concerning the qualitative method, we interview- using the Q methodology approach - 31 subjects, being 13 analysts/professional investors and 18 individual investors. Our objective in this phase is to identify patterns in the usage of accounting/non-accounting information by analysts/professional investors, in contrast to individual investors\' information choices. By doing so, we can use the obtained results to base our experimental information choices regarding (a) which accounting information pieces were most preferable to professional investors and (b) the information presentation sequence to be followed in the experimental setting. Next, we develop a 2 X 2 between-subjects experimental design in which we manipulate the presentation format of a hypothetical company between the traditional \'tabular and footnotes\' design versus the narrative content-only design. We also vary the financial performance between \'good\' and \'bad\' to check if the variables of interest would impact (a) investment propensity on the company\'s shares and (b) the amount of information retrieved from memory. As our main results, we find that the narrative format per se does not impact investment propensity and that the alternative presentation format is beneficial for participants with less than 5 years of investment experience in capital markets in the poor financial performance condition, adjusting their investment propensity to the same investment propensity level of more experienced investors.A medida que a complexidade da tecnologia e dos mercados de capitais aumentou, o montante da informação contábil divulgada pelas empresas em seus relatórios financeiros também aumentou. Atualmente, chegamos a um impasse, onde é questionável se mais informações reduzem a assimetria de informações. Autores anteriores criticam fortemente o tamanho das demonstrações financeiras e relatórios anuais, argumentando que eles devem comunicar mais ao invés de apenas serem volumosos, já que o atual volume de informações pode ser contraproducente para o indivíduo médio adquirir, reter e processar todas as informações disponíveis. Com base na evidência de literatura contábil anterior sobre o formato de apresentação e as teorias de psicologia, teoria da atribuição e teoria da carga cognitiva, temos a hipótese de que, ao manipular informações contábeis através de um formato amplamente mais acessível, como a narrativa, os investidores individuais serão capazes de compreender melhor as informações contábeis e, posteriormente, ter um uso mais proeminente delas em relação às atuais informações não fundamentais disponíveis para uma avaliação de decisão de investimento. Para alcançar nosso objetivo de pesquisa, utiliza-se uma estratégia de pesquisa de método misto com um Desenho Sequencial Exploratório, o método qualitativo atua como uma preparação para o quantitativo. Como método qualitativo, entrevistou-se - usando a abordagem da Metodologia Q - 31 sujeitos, sendo 13 analistas/investidores profissionais e 18 investidores individuais. O objetivo nesta fase foi entender o padrão de comportamento de uso de informações contábeis/não-contábeis por analistas/investidores profissionais, em comparação com as escolhas de informações de investidores individuais. Ao fazê-lo, puderam-se usar os resultados obtidos das entrevistas para basear as escolhas de informações experimentais em relação a (a) quais peças de informação contábil eram mais preferíveis aos investidores profissionais e (b) a sequência de apresentação de informações a seguir na configuração experimental. Em seguida, desenvolve-se um design experimental 2 x 2 entre os sujeitos em que manipulamos o formato de apresentação de uma empresa hipotética entre o design tradicional \'tabular e notas explicativas\' versus o design narrativo apenas de conteúdo. Foi alterado também o desempenho financeiro entre \'bom\' e \'ruim\' para verificar se as variáveis de interesse impactam (a) propensão de investimento nas ações da empresa e (b) a quantidade de informações recuperadas da memória. Como nossos principais resultados, identificamos que o formato narrativo individualmente não afeta a propensão de investimento e que o formato de apresentação alternativa beneficiou os participantes com menos de 5 anos de experiência de investimento nos mercados de capitais na condição de má performance financeira, ajustando sua propensão ao mesmo nível de investimento de investidores mais experientes.
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Trejo, Lizama Wilbert [Mitwirkender]. "Strategies to improve the use of limited nutrient resources in pig production in the tropics / Wilbert Trejo Lizama." Kassel : Kassel Univ. Press, 2005. http://d-nb.info/982035101/34.
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Schneider, Nicole. "Parameters: Suites of unique abstract prints generated through the use of a limited set of form-making instructions." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1334282036.
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Werin, Atle. "Use of a Multiplexer to get Multiple Streams Through a Limited Interface : Encapsulation of digital video broadcasting streams." Thesis, Linköpings universitet, Datorteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-133288.
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In digital video broadcasting, sometimes many sources are used. When handling this broadcast a problem is a limited interface that has a fixed number to input channels but overcapacity in data transfer rate. To be able to connect more inputs to the interface a protocol that lets the user send more than one channel on a connection is needed. The important part for the protocol is that it keeps the input equal to the output both in timing and in what data is sent. These are done by encapsulating the data and use a header containing information for recreating the input. To solve the timing constraint dynamic buffer are used that makes all data evenly delayed. To validate the functionality of the protocol a test designed is implemented in VHDL and simulated.
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Weiland, Paul E. "The Influence of Regulatory Mode on the Use of Limited Self-Regulatory Resources and the Experience of Self-Regulation." Connect to Online Resource-OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1197423473.
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Boyd, Jeni. "'In dreams begins responsibility' : the use of dream-work within the context of time-limited counselling : the clients' perspective." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492089.
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Ward, Carrie. "Garnering transit ridership a case study of transit use by refugee and limited English proficiency groups in Manchester, New Hampshire /." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/theses/284/.
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Nimmo, Peter. "Chasing the white rabbit to find a white elephant: Exploring limited/non-use of education technology in Mpumalanga, South Africa." Master's thesis, Faculty of Commerce, 2018. http://hdl.handle.net/11427/30037.
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This qualitative, inductive dissertation explores a social enterprise’s management of for-profit and not-for-profit missions administered through different programmes. Ineffective balancing negatively impacted the design, development, and implementation strategy of an education technology (EDTech) trial in no-fee government schools in Mpumalanga, South Africa intended to fund a non-profit music academy. This study builds upon existing literature in information technology management; the implications of managing multiple missions in social enterprises; as well as technology design and development theory. These are used to offer a descriptive account of limited/non-use of education technology in areas facing deep rooted inequalities. Through adopting a qualitative methodology using semi-structured interviews, observation, and document analysis; rich data was gathered to construct three case studies of individual schools. These case studies are compared to the expectations and reflections of the social enterprise’s board and management in light of limited/non use of EDTech. The research finds high degrees of nuance between schools; even within 5 Kilometres of each other. Such nuance is reflected in uneven provision of devices, educational resources, and infrastructure; varying technology integration strategies between schools; in addition to the individualistic sensemaking of education technology by teachers. This research provides a rich example of the difficulty for social enterprises in balancing disintegrated social and commercial value chains. This increases the risk of such organisations ineffectively allocating resources by prioritising speculative financial gain over social impact; resulting in failure to achieve multiple, differentiated missions.
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Müller, Francuois L. "Native legume species from the Northern Cape province of South Africa and their potential use as forage crops." University of Western Cape, 2021. http://hdl.handle.net/11394/7932.
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Philosophiae Doctor - PhDThe lack of bioclimatically suitable forage species for livestock production in the water-limited agro-ecological areas of South Africa has resulted in significant feed shortages within these areas during the ongoing drought experienced within the country. This, in turn, has resulted in significant livestock mortalities leading to financial difficulties for the farmers and farming communities within these areas. Thus, many of the water-limited agro-ecological areas in South Africa have been declared disaster areas. These cyclic long-term droughts, as well as more common short-term droughts are expected to increase in frequency, duration and intensity under the predicted future bioclimatic conditions. Although there has been significant investment into the development of improved, better-adapted forage crops for these bioclimatically marginal agro-ecosystems, these efforts, to date, have largely been unsuccessful. Therefore, in this study, we propose to identify and evaluate species that are native to the water-limited South African agro-ecosystems and that can potentially be implemented in alternative fodder flow programs within these water-limited agro-ecological areas.
2022
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Wozniak, Roberta. "The evaluation of potential weight-estimation methods in a primarily HIV positive cohort in Botswana for use in resource limited settings." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43843.
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Appropriate drug dosing in children should be calculated based on a child’s weight. In resource constrained settings however, inaccurate drug dosing is common due to the absence of working weight scales. Existing proxies for weight, such as those based on age or height, have been shown to be problematic, especially in populations in developing countries. Long bone measurements in children, such as ulna and tibia lengths, have yet to be studied as surrogate measures for weight.
The purpose of this study was 1) to examine the association between weight and a series of proxy anthropometric measurements including height, ulna and tibia lengths, mid-upper arm circumference (MUAC), and triceps skinfolds in a primarily HIV positive population of Botswana children (18 months – 12 years); 2) to determine what percentage of the study population has a predicted weight within 10% of their actual weight; and 3) to determine a simple weight-prediction method that would most accurately predict a child’s weight (18 months – 12 years).
This study was a cross-sectional survey carried out in a clinical setting at the Botswana-Baylor Children’s Clinical Centre of Excellence in Gaborone, Botswana. We measured weight, height, mid-upper arm circumference (MUAC), triceps skinfolds, ulna length, and tibia length in 777 children between the ages of 18 months and 12 years. Univariate linear regression and multiple linear regression analysis were performed using SPSS and coefficients of determination (R2) were calculated. Accuracy of the weight-prediction method was defined as having a predicted weight within 10% of the child’s actual weight.
The MUAC-Tibia and the MUAC-Ulna weight-prediction models had the highest accuracy for predicting a child’s weight with adjusted R2 values of 0.95 and 0.94, respectively. Of the participants, 82% of weights were predicted to within 10% using the MUAC-Tibia method and 79% using the MUAC-Ulna method. Due to the high degree of accuracy, the MUAC-Tibia or MUAC-Ulna weight-prediction methods could potentially be used to estimate a child’s weight. Studies are needed to confirm these findings in other resource poor settings where there is no access to working scales.
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Kim, Ye-Kyoung. "Linguistic and social capitals U.S. immigrant limited English proficient high school students' use of English as a second language and social interactivity /." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1149096608.
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Gregor, Annelie. "Limited Military Pressure – An Analytical Framework to Assess No-Fly Zones as a Single Instrument in Coercive Diplomacy." Thesis, Försvarshögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-2782.
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Coercive diplomacy attempts to use military force in a limited fashion as a diplomatic and political tool in order to persuade an opponent to cease aggression rather than to bludgeon him into stopping. The use of limited military force in coercive diplomacy is not a military strategy, but rather a refined political and psychological instrument used for resolving a crisis. One relatively new instrument in the toolbox of limited force when engaging in coercive diplomacy, fashioned to deter adversaries, is the use of no-fly zones. The term no-fly zone describes the physical area of a nation that is patrolled using the airpower of another sovereign state or coalition. However, despite its relatively frequent use in its short history, it has largely been ignored in theoretical studies of coercive diplomacy. As scholars, such as Daniel Byman and Matthew Waxman, have presented a critical view on the limitations of approaching a study on a single instrument in coercive diplomacy, this paper grounds the argument that there is still value in this approach. Given that the conditions of coercive diplomacy mainly focus on an array of coercive instruments at a political level, are the conditions in the theories of coercive diplomacy sufficient to explain the political success of the military instrument of no-fly zones? Hence, this paper illustrates the theoretical reach of the theories of coercive diplomacy by highlighting the fungibility of the coercive diplomacy’s theoretical ‘success conditions’ when assessing a single military instrument. By studying the political success and failure in four separate cases, this paper proposes an analytical framework, which is by and large, derived from Peter Viggo Jakobsen and Alexander George’s theoretical basis. However, as the theoretical basis does not fully cover all of the political dimensions of no-fly zones, an additional variable is proposed. The resulting analytical framework suggests that this is a viable approach, but only by combining Jakobsen’s revised conditions with the original work of Alexander George, in addition to the proposed variable. Thus, this result contributes to the large body of scholarly work on coercive diplomacy theory and the debate whether one can assess a specific coercive instrument with the political ‘success conditions’ of coercive diplomacy, or not.Master Thesis
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Lippe, Melvin [Verfasser], and Georg [Akademischer Betreuer] Cadisch. "Simulating the impact of land use change on ecosystem functions in data-limited watersheds of Mountainous Mainland Southeast Asia / Melvin Lippe. Betreuer: Georg Cadisch." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2015. http://d-nb.info/1068256133/34.
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Mallin, Kenneth. "N. Hingley & Sons Limited - Black Country Anchor Smith and Chain Cable Maker : a study of the world's premier manufacturer of ships' anchors and cables in the period 1890-1918." Thesis, University of Warwick, 1996. http://wrap.warwick.ac.uk/36367/.
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The principal objective of this dissertation is to position the firm of N Hingley & Sons Limited in its rightful place in the economic history of the Black Country and of Britain in the period 1890 to 1918. As an original contribution to knowledge of the subject, the study focuses on a modestly sized firm of ironmakers in the Black Country that achieved a position of almost total hegemony in the provision of anchors and ships cables to the navies and merchant fleets of the world. This was at a time when 90 per cent of all chain manufactured in Britain came from the Black Country and when the bulk of the ships of the world were constructed in British yards. The success of the firm was based on the solid foundation built by Noah Hingley in harnessing natural resources to a cooperative labour force under the direction of a paternalistic family of marked goodwill. Chapters two and three place the Hingley firm in the economic context of the times. Particular attention is given to how well the enterprise conforms to NrCloskey's analysis that in this period British industry did well and did all that could have been reasonably expected of it. Chapter four draws heavily on the Hingley archival material to establish an outline of the firm's trading activities during the period under review. This process is extended to the limits of the files in chapters five, six and seven. Chapter five examines the evolution from a family partnership to a closely held family company to a broadly held private company demonstrating the continuing ability of the Hingley family to adapt, developing an appropriate structure at each stage. Chapter six examines the basis of Hingleys' hegemonic position : the excellence of its wrought iron, its ability to fashion large diameter cable (up to 6"), and its state-of-the-art anchors. Chapter seven examines the form and development of Hingleys' highly efficient method of marketing. This was a method that ensured that the entirety of its production was always sold year on year and regardless of the fluctuations of business activity. Chapter eight is supplementary to chapter seven and examines Hingleys' greatest achievement. This was the firm's ability to create combinations of manufacturers and mini-cartels in order to capture the lion's share of the production of large diameter ships' cables and anchors for a selected list of firms. This was not a simple rigging of the market. Rather, it was a precondition of sustained high quality that provided a first class product at a fair price. The navies of the world benefited from this strategy. The provision of first class products allied to excellent marketing was the key to Hingleys status in the industry. Chapter nine, dealing with relations with governments, examines the growing levels of state control in the period under review. Beginning with the unstoppable momentum for social and political change, the emergence of the military-industrial complex world wide ensured a greater degree of involvement by the state in matters of business and commerce. In the latter stages of the chapter, the way in which the Board coped with the command economy of the Great War is examined in the context of the resilience of the firm in adapting to the economic and cultural changes of the first quarter of the current century. It was this ability that enabled it to trade on successfully for a further fifty years after the end of this story. My dissertation endeavours to show that Noah Hingley's firm was a fine example of solid achievement within the parameters of what was sensible and economically achievable in Britain at that time.
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Huang, Wei-Che (Darren). "Design and implementation of a mobile wiki : mobile RikWik." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16475/.
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Wikis are a popular collaboration technology. They support the collaborative editing of web pages through a simple mark-up language. Mobile devices are becoming ubiquitous, powerful and affordable. Thus it is advantageous for people to get the benefits of wikis in a mobile setting. However, mobile computing leads to its own challenges such as limited screen size, bandwidth, memory and battery life; they also have intermittent connectivity due to the mobility and the coverage of network. I investigate how wikis can be made mobile; that is how wiki forms of collaborative editing can be achieved through mobile devices such as PDAs and smart phones. A prototype mobile wiki has been created using .NET, which addresses these issues and enables simple collaborative working whilst on and offline through smart mobile devices. A cut down wiki runs on the mobile device. This communicates with a main central wiki to cache pages for off line use. When sitting in a powered cradle eager, downloading and synchronization of pages is supported. During mobile operation, pages are cached lazily on demand to minimize power use and to save the limited and expensive bandwidth. On re-connection, offline edited as well as new pages are synchronized with the main wiki server. Finally a pluggable page rendering engine enables pages to be rendered in different ways to suit different sized screens.
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Coetzee, Wena. "Language errors in the use of English by two different dialect groups of Afrikaans first language-speakers employed by Nedbank : an analysis and possible remedy." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2063.
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Thesis (MPhil (General Linguistics))--University of Stellenbosch, 2009.ENGLISH ABSTRACT: The financial sector of South Africa is increasingly under pressure to ensure that the language used in all communication is aligned with international best practice and, furthermore, that the correct business terminology is applied. Standards of language proficiency and usage have, however, deteriorated over the past few years. This appears to be due mainly to lack of good language education at school level. In Nedbank, specifically, the language used by employees in written external communication is not always on par as is evident from the documentation that Nedbank Editorial and Language Services (Nels), the “language custodian” of the bank, has to edit and translate. Nels decided six years ago that, instead of rewriting all these documents, which is not timeor cost-efficient, to rather give business-writing training across the bank to enable Nedbank employees to increase their general writing proficiency of English. This study aims to establish whether there are discrepancies in the type of error made in English as used by Coloured Afrikaans mother tongue speakers and White Afrikaans mother tongue speakers in order to determine how to customise the business-writing training materials to the benefit of each cultural grouping in Nedbank.
AFRIKAANSE OPSOMMING: Die finansiële sektor in Suid-Afrika is toenemend onder druk om te verseker dat die taal wat in alle kommunikasie gebruik word in ooreenstemming is met internasionale “beste praktyk”, en verder dat die korrekte besigheidsterminologie gebruik word. Taalvaardigheids- en taalgebruiksvlakke het egter oor die afgelope aantal jare verswak, waarskynlik a.g.v. onvoldoende taalonderrig op skool. In Nedbank is die taalgebruik van werknemers in geskrewe eksterne kommunikasie nie altyd van ’n aanvaarbare standaard nie, soos duidelik blyk uit die dokumentasie wat Nedbank Editorial and Language Services (Nels), die bank se “taalbewaarder”, moet redigeer en vertaal. Nels het ses jaar gelede besluit om besigheidskryfkursusse vir die hele groep aan te bied, eerder as om al die eksterne kommunikasie oor te skryf, wat nie tyd- en koste-effektief is nie. Sodoende kan werknemers hulle algemene skryfvaardighede in Engels verbeter. Hierdie studie probeer vasstel of daar moontlike verskille is in die soort foute wat in Engels deur gekleurde Afrikaans-moedertaalsprekers en wit Afrikaans-moedertaalsprekers gemaak word, in ‘n poging om doeltreffende opleidingsmateriaal te ontwikkel vir elke kulturele groepering in Nedbank.
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Brynolfsson, Borg Andreas. "Non-Contractual Churn Prediction with Limited User Information." Thesis, KTH, Matematisk statistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252343.
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This report compares the effectiveness of three statistical methods for predicting defecting viewers in SVT's video on demand (VOD) services: logistic regression, random forests, and long short-term memory recurrent neural networks (LSTMs). In particular, the report investigates whether or not sequential data consisting of users' weekly watch histories can be used with LSTMs to achieve better predictive performance than the two other methods. The study found that the best LSTM models did outperform the other methods in terms of precision, recall, F-measure and AUC – but not accuracy. Logistic regression and random forests offered comparable performance results. The models are however subject to several notable limitations, so further research is advised.Den här rapporten undersöker effektiviteten av tre statistiska metoder för att förutse tittaravhopp i SVT:s playtjänster: logistisk regression, random forests och rekurrenta neurala nätverk av varianten long short-term memory (LSTM:s). I synnerhet försöker studien utröna huruvida sekventiell data i form av tittares veckovisa besökshistorik kan användas med LSTM:s för att nå bättre prediktionsprestanda än de övriga två metoderna. Studien fann att LSTM-modeller genererade bättre precision, täckning, F-mått och AUC – men inte träffsäkerhet. Prestandan av logistisk regression och random forests visade sig vara jämförbara. På grund av modellernas många begränsningar finns det dock gott om utrymme för vidare forskning och utveckling.
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ROUSSEL, FABIENNE. "Simulation numerique d'ecoulements de fluides compressibles visqueux par une approche fluide parfait avec conditions aux limites de paroi modelisant la couche limite." Paris 6, 1992. http://www.theses.fr/1992PA066316.
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L'etude porte sur l'elaboration d'une strategie numerique efficace permettant la modelisation des ecoulements non decolles de fluide compressible visqueux autour de configurations complexes (profils d'aile en 2d, ailes ou avions complets en 3d). La strategie s'appuie sur une approche combinant a la fois un solveur fluide parfait (potentiel avec correction entropique ou euler conservative) et un solveur couche limite caracterisant les effets visqueux proches de la paroi. Le resultat du calcul de couche limite engendre l'evaluation d'une vitesse normale dite de soufflage qui sert ensuite de condition a la limite de paroi dans le calcul fluide parfait. En iterant ainsi les calculs, on obtient un solveur bivalent peu couteux, se substituant a un solveur navier-stokes, pour des ecoulements bidimensionnels non decolles, et permettant de realiser des calculs d'ecoulements autour d'avions complets. La methodologie ainsi developpee, met en evidence la robustesse des deux solveurs fluide parfait a la prise en compte de conditions aux limites de paroi non homogenes. Les nombreuses experiences numeriques effectuees, tant ene bidimensionnel qu'en tridimensionnel, fournissent des resultats d'une precision satisfaisante et valident ainsi la methode
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Weigend, Bertil. "Die US-amerikanische Limited Liability Company : im Vergleich zu deutschen Gesellschaftsformen unter Berücksichtigung steuerlicher Aspekte /." Berlin : Weißensee-Verl, 2004. http://www.gbv.de/dms/spk/sbb/recht/toc/379101653.pdf.
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Snoussi, Jawad. "Limites d'espaces tangents à une surface normale." Aix-Marseille 1, 1998. http://www.theses.fr/1998AIX11037.
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Dans ce travail, nous donnons des caracterisations numeriques et geometriques de l'ensemble des limites d'hyperplans tangents a un germe de surface normale (s,0) plongee dans c n. Nous demontrons qu'un hyperplan h n'est pas une limite d'hyperplans tangents a s en 0 si et seulement si la section de h avec s est reduite et son nombre de milnor est minimum parmi ceux des sections hyperplanes reduites. Il est connu que l'ensemble des limites d'hyperplans tangents a la surface s en 0 est la reunion de l'ensemble des hyperplans tangents au cone tangent de s en 0 et de l'ensemble des hyperplans contenant des generatrices particulieres du cone dites tangentes exceptionnelles de s en 0. On sait egalement que ces tangentes exceptionnelles correspondent aux points fixes du systeme lineaire des courbes polaires par l'eclatement de l'origine dans s. Nous prouvons ici que les tangentes exceptionnelles de s en 0 correspondent aux points ou la famille des sections hyperplanes de s n'admet pas de resolution simultanee faible, ce qui nous permet de les determiner precisement sur le diviseur exceptionnel de l'eclatement de l'origine. En etendant la notion de composantes de tyurina a une desingularisation raisonnable d'une surface normale, nous demontrons que ces composantes se contractent sur des points fixes du systeme lineaire des courbes polaires par l'eclatement de l'origine. En appliquant ces techniques a l'etude des pinceaux de courbes sur un germe de surface normale, nous determinons les valeurs dites speciales d'un pinceau de courbe, c'est a dire celles pour lesquelles la topologie de la courbe n'est pas generique.
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Pon, Raymond K. "Measuring the interestingness of articles in a limited user environment." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1666144281&sid=5&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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Leyendecker, Benjamin E. "Geschäftsführungsmacht, Inhaberschaft und Haftung bei börsenunabhängigen Gesellschaften /." Baden-Baden : Nomos, 2008. http://d-nb.info/990657396/04.
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Silva, Neto João Pereira da. "Um estudo sobre o ensino de limite: um tratamento computacional com aplicações." Pontifícia Universidade Católica de São Paulo, 2006. https://tede2.pucsp.br/handle/handle/11065.
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Previous issue date: 2006-05-30The objective of the present work is to analyse a proposal of exploration about the limit, concept for students in courses of licentiateship in Mathematics, searching for a way that points up the importance of this concept into the Mathematics and showing its application in other areas of knowledge. Using the technology, we could create ambients capable of helping teaching-learning in classroom. We will use the softwares Graphmatica, Cabri Géomètre and Excel as auxiliaries instruments in preparation of the didactic material. The preparation of the material was offered to some teachers that teach the discipline Differential and Integral I Calculation, to be used and tested. Our choices are based on of Vygotsky end Ausubel ideas. We hope to contribute to teaching-learning process of limits, stimulating the reflection about the correct utilization of technology and didactics researches
O presente trabalho tem como objetivo analisar uma proposta de exploração do conceito de limite para alunos de cursos de licenciatura em matemática. Busca-se um tratamento que evidencie a importância desse conceito dentro da matemática e que mostre sua aplicação em outras áreas do conhecimento. Utilizando a tecnologia, criaremos ambientes que possam favorecer o ensino e a aprendizagem em sala de aula. Utilizamos os softwares Graphmatica, Cabri Géomètre e Excel como ferramentas auxiliares na preparação do material didático. O material preparado foi oferecido a alguns professores que lecionam a disciplina de Cálculo Diferencial e Integral I, para que o utilizem e o avaliem. Fundamentamos nossas escolhas nas idéias de Vygotsky e Ausubel. Esperamos contribuir com o processo de ensino-aprendizagem de limites, estimulando a reflexão sobre a utilização de recursos didáticos tecnológicos adequados
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Sheldon, Mark Donald. "User Perceptions of CSR Disclosure Credibility with Reasonable, Limited and Hybrid Assurances." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/65158.
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Firms seek independent assurance from accountants on their Corporate Social Responsibility (CSR) disclosures for various reasons, including to enhance the credibility of such disclosures or to enhance the reliability of management's CSR report. However, there are multiple levels of assurance available for CSR disclosures. The forthcoming clarified U.S. attestation standards re-frame the two levels of assurance on non-financial information as reasonable (higher) and limited (lower). While not currently addressed by U.S. standards, accountants also issue hybrid reports with both reasonable and limited assurance on CSR disclosures. I conduct an experiment to identify differences in nonprofessional investors' perceptions of CSR disclosures when reasonable, limited, or hybrid assurances are provided and manipulate firm CSR performance as a possible moderator for the influence of assurance. Findings indicate that nonprofessional investors find CSR disclosures on greenhouse gas emissions to be credible, and the degree of credibility does not vary significantly based on the firm's performance in controlling emissions or on the level of assurance provided by an accountant. However, nonprofessional investors do differ in their perceptions of the overall reliability of representations made in management's CSR report. While management's CSR report supported by hybrid assurance is generally perceived to be as reliable as when only limited or only reasonable assurance is provided, the perceived reliability differs between limited and reasonable assurance. Supplemental analyses reveal an interaction such that management's CSR report is perceived as more reliable with limited assurance rather than with reasonable or no assurance for firms with better performance at controlling greenhouse gas emissions; this association reverses for firms with worse performance. This interaction may be due, in part, to language in limited assurance reports that makes it clear higher assurance was available but not pursued by management. Results address a gap in the literature for hybrid assurance and show that nonprofessional investors find management's CSR report with hybrid assurance to generally be as credible and reliable as when either limited or reasonable assurance is provided. Further, results offer insight into the interactive effects of firm performance and level of assurance on nonprofessional investors' perceptions of the reliability of management's CSR report.Ph. D.
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Akpomey, Honoré. "L’Etat de droit au Bénin : une délicate concrétisation." Thesis, Perpignan, 2015. http://www.theses.fr/2015PERP0012.
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Le thème de l’Etat de droit connaît depuis les années quatre-vingt une grande fortune. Aucun Etat ne peut aujourd’hui bénéficier d’un minimum de respectabilité internationale s’il ne se déclare expressément être un Etat de droit. Il est désormais admis en Afrique subsaharienne et au Bénin que l’Etat ne peut fonctionner uniquement par la violence au nom du développement. Les constituants et les populations décident alors de passer d’un pouvoir arbitraire auquel tout est permis à un Etat qui accepte d’être limité par le droit et de le respecter, un Etat de droit.Par sa Conférence nationale tenue à Cotonou du 19 au 28 février 1990 et l’adoption de sa nouvelle Constitution le 11 décembre 1990, le Bénin adhère à l’idéal de l’Etat de droit avec la « juridictionnalisation » de la sphère politique par la Cour constitutionnelle dont la saisine est ouverte à tous les citoyens. Cette thèse fait l’inventaire de la concrétisation de l’Etat de droit au Bénin et en constate la délicatesse. La justice et la primauté du droit ne sont que relativement effectives. Le patrimonialisme et la corruption perdurentThe theme of Rule of Law has been particularly popular since the 80’s. No State can be internationally respected nowadays if it does not expressly declare itself to practice a Rule of Law. It is now admitted in sub-Saharan Africa and in Benin that the State can no longer function only through violence in the name of development. The constituents and populations decided to go from an arbitrary power where everything is permitted to a State that agrees to be limited by the law and to respect it, in other words, a Rule of Law.Benin has proven its adherence to the idea of Rule of law since its National Conference held in Cotonou from 19 to 28 february 1990 and the adoption of its new Constitution on 11 december 1990, followed by the “jurisdictionalisation” of the political sphere through the creation of the Constitutional Court that every citizen can refer to. This thesis presents the history of the consolidation of the Rule of Law in Benin and points out its weaknesses. The Justice and Rule of Law are only relatively effective. Patrimonialism and corruption prevail
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Pahud, Marc. "L'automédication, une réalité : son intérêt, ses limites, ses risques." Nantes, 1986. http://www.theses.fr/1986NANT408P.
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Cesaro, Jean-Daniel. "Une croissance sans limite ? : vers une nouvelle géographie de l’élevage au Vietnam." Thesis, Paris 10, 2016. http://www.theses.fr/2016PA100131/document.
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Depuis les années 1990, le secteur de l’élevage au Vietnam subit des transformations rapides et profondes. Les productions de viande et de lait sont passées d’un système d’élevage familial intégré aux activités agricoles à un mode plus intensif et largement industrialisé. Les grandes exploitations capitalistiques se substituent progressivement à la petite paysannerie. Cette évolution soulève un certain nombre d’enjeux spatiaux. Le développement des villes, l’implantation des usines d’alimentation animale dans les campagnes, la relocalisation des bassins de production et l’essor de la production de maïs entrainent une réorganisation complète de la géographie de l’élevage au Vietnam. Cette dynamique spatiale est largement méconnue alors même qu’elle s’accélère depuis l’entrée du pays dans l’OMC en 2007. Cette thèse s’intéresse en particulier à trois districts – Thong Nhat, Mai Son et Ba Vi – dans lesquels l’élevage est une composante majeure du développement local. Les principaux résultats de cette thèse montrent que la concentration spatiale des systèmes d’élevage industriel dans un nombre réduit de régions est de fait organisée par un partenariat étroit entre autorités politiques et firmes privées qui privilégient les bénéfices économiques de cette industrialisation. Cependant, les autorités locales et les firmes impliquées peinent à prendre en compte les préjudices à moyen-terme de l’agglomération des systèmes de production sur la durabilité des anthroposystèmes. La gestion des milieux apparait laissée à la charge des communautés locales, et les fonctions de l’agriculture évoluent progressivement vers le recyclage des externalités du système d’élevage industrielSince the 1990’s, livestock sector in Vietnam has been deeply changing. Meat and milk productions are mouving from a mixed farming system towards a more intensive and industrialized production model. Concentrated animal feeding operations are progressively replacing small-scale livestock farming. This transition raises specific spatial issues. Expansion of urban areas, location of feed mills in rural areas, relocation of intensive production areas lead to a complete reorganization of the geography of livestock sector in Vietnam. This spatial dynamic is becoming an issue, especially since Vietnam has joined WTO in 2007. This thesis focuses on three districts – Thong Nhat, Mai Son et Ba Vì – where livestock plays a major role in local development. We show that spatial concentration of industrial production systems occurs in a limited number of regions. This dynamics appears to be organized by a close partnership between local authorities and private firms, with a focus on economic benefit. However, those stakeholders seem not to be in condition to manage all medium term impacts of this concentration on anthroposystem sustainability. Most of the challenges related to the Environmental management of industrial livestock systems remains in the hands of local communities. The role of agriculture progressively evolves towards the recycling of industrial livestock systems effluents
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Talandier, Jean. "Couplage entre une couche limite hypersonique et une paroi degradable par oxydation." Paris 6, 1994. http://www.theses.fr/1994PA066268.
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Lors de la rentree atmospherique de l'avion spatial hermes, les materiaux constituant l'engin sont en contact avec un ecoulement hypersonique et soumis a des sollicatations thermiques et chimiques importantes. Les parties chaudes (nez, bords d'attaque) sont construites avec des materiaux composites de type carbone-carbone proteges et subissent des alterations resultant principalement de l'oxydation interne se developpant dans la porosite. Ces reactions d'oxydations sont favorisees par des temperatures elevees et par la presence dans l'ecoulement d'especes dissociees. L'apport de ce travail reside dans l'analyse couplee de l'ecoulement externe au voisinage de la paroi et de l'evolution des materiaux au cours d'une trajectoire de rentree. Des simulations numeriques ont permis d'etudier certaines perturbations de l'ecoulement de couche limite, consequences de la degradation des composites, et les facteurs critiques qui contribuent a ces degradations
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Lahrichi, Mohamed Seddik. "Etude expérimentale de couches limites cinématiques sur une aube de turbine aéronautique à grande échelle." Ecully, Ecole centrale de Lyon, 1994. http://www.theses.fr/1994ECDL0049.
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Pour cette thèse, il a fallu définir une grille expérimentale d'aubes de turbine, l'installer, effectuer ses réglages aérodynamiques et réaliser des sondages bidimensionnels dans des couches limites cinématiques se développant sur une aube, ainsi que dans ses sillages. L'aubage choisi est bidimensionnel et son profil est celui d'une aube de distributrice à gaz aéronautique. En raison de la longueur de corde de l'aube qui est de 1. 4m, la grille plane ne comporte que deux canaux inter-aubes, formes d'une aube centrale d'expérimentations et de deux surfaces adjacentes, extrados et intrados, du même profil. Les réglages des distributions de vitesse potentielle, de périodicité, autour de l'aube centrale ont été effectués sur la base de résultats d'un calcul bidimensionnel, non visqueux, aube à aube. Les sondages à mi-envergure, dans les couches limites et les sillages de l'aube, pour trois différents taux de turbulence en amont de l'aube (0. 6% ; 3. 6% ; 6%) ont été réalisés à l'aide d'anémométrie au fil chaud et d'anémométrie laser bi-composantes. Les mesures, côté extrados et côté intrados de l'aube, du champ de vitesses moyennes et fluctuantes ont permis de décrire des évolutions de la couche limite laminaire, transitionnelle et turbulente, sur des parois concave et convexe, en présence de gradients de pression positifs et négatifs. Différents modes de transition de la couche limite ont ainsi été caractérisés.
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Moursali, El Mostafa. "Etude expérimentale d'une couche limite eau-air a bulles se développant sur une plaque plane verticale." Ecully, Ecole centrale de Lyon, 1993. http://www.theses.fr/1993ECDL0018.
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La structure des écoulements verticaux ascendants a bulles au voisinage des parois solides est étudiée en explorant le cas d'une couche limite turbulente se développant sur une plaque plane verticale. Les résultats concernent la distribution de taux de vide, le frottement a la paroi et les profils de vitesse du liquide. Nous avons montre que la migration des bulles vers la paroi existe. Cependant, la migration n'est pas systématique. Elle dépend fortement de la taille moyenne des bulles. La migration et la décélération significative des bulles a la paroi, se révèlent être les deux mécanismes principaux responsables du pic de taux de vide détecte près des parois. Les mesures du frottement a la paroi obtenues par film chaud affleurant, montrent que le coefficient de frottement est accru par la présence de la phase dispersée dans des proportions dépendant a la fois de l'amplitude du pic et de la vitesse externe du liquide. Cet accroissement est relie a une modification de la loi logarithmique universelle et a un aplatissement du sillage de la couche limite
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Monavon, Arnault. "Etude d'une couche limite instationnaire sur une paroi déformable." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37599782b.
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Monavon, Arnault. "Etude d'une couche limite instationnaire sur une paroi déformable." Paris 6, 1986. http://www.theses.fr/1986PA066369.
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Mazin, Cyril. "Calcul de couches limites tridimentionnelles par une technique de caractéristiques." Toulouse, ENSAE, 1991. http://www.theses.fr/1991ESAE0021.
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Une méthode de calcul de couches limites tridimensionnelles se développent autour d'obstacles profiles quelconques a été mise au point. Le domaine d'application de celle-ci va, en laminaire, de l'incompressible au supersonique. En écoulement turbulent, il est limité par la validité du modèle de longueur de mélange utilisé. Le schéma numérique adopte est de type semi-implicite. Les équations de quantité de mouvement et d'énergie sont discrétisées suivant les lignes de courant locales, cela afin de respecter rigoureusement les contraintes liées à la nature parabolique du système d'équations. Contrairement aux méthodes habituelles qui utilisent les coordonnées généralisées, on se sert comme intermédiaire de calcul du plan tangent osculateur en chaque nœud du maillage de surface lie à l'obstacle, évitant ainsi d'imposer une hypothèse de régularité supplémentaire pour les lignes de maillage de données. Il est ainsi possible de limiter, voire de supprimer, la phase de prétraitement des données venant du calcul fluide parfait.
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Khattak, Shahid. "Base station cooperation strategies for multi-user detection in interference limited cellular systems /." Dresden : Vogt, 2008. http://d-nb.info/990989542/04.
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Brame, Olene Harris. "Computational Estimation Strategies Used by High School Students of Limited Computational Estimation Ability." Thesis, North Texas State University, 1986. https://digital.library.unt.edu/ark:/67531/metadc331243/.
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The problem of this study was to investigate the strategies used by high school students of limited estimation ability for the estimation of the answers to computational problems. The Assessing Computational Estimation Test was administered to 460 students, and 40 of them were selected for interviews. Each student interviewed was asked to estimate the answers to fourteen computation and application problems.
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Ilmiawan, Shubhi. "Performance Enhancement of MIMO Transmission Techniques with Limited Number of Receive Antennas." Kyoto University, 2017. http://hdl.handle.net/2433/227664.
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Talling, Peter. "Minimum Share Capital : Its Functions for Swedish Private Limited Liability Companies." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Rättsvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-15914.
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This thesis aims to investigate the effects of the Swedish minimum capital requirement in relation to the Swedish private limited liability companies. The issue of whether there should be a requirement for minimum share capital has been debated in Sweden and the rest of the European Union. Sweden and other continental European countries have a tradition of providing a minimum share capital requirement in order to provide creditor protection. Countries that administer an Anglo-Saxon tradition such as England and the United States do not express the same belief in the minimum share capital’s function as creditor protection and has therefore abolished these requirements. The European Union’s Second Company Law Directive provides a minimum share capital of EUR 25,000 for companies similar to the Swedish public limited liability company. The companies comparable to the Swedish private limited liability companies is thus regulated under the law of the Member States themselves. In Sweden the frequently used arguments for abolishing the minimum share capital requirement are the rule’s dysfunction as creditor protection, the fact that the minimum share capital does not consider the specific capital demand of the company and the potential obstacle effect on entrepreneurship. The author agrees with these arguments but emphasises the minimum share capital’s function as an “entrance fee” to the private limited liability company form as an argument why the requirement should maintain in Swedish company law. The rules in ABL regarding protection of restricted equity could be replaced by a solvency-sufficiency test similar to the provision in § 6.40 MBCA. The minimum share capital’s obstacle effect on entrepreneurship could be reduced by introducing a beneficial loan with low interest rate provided by the state or the municipalities.
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Nguyen, Van Lan Rémi. "Etude numérique de l'interation entre une couche limite turbulente et une paroi flexible." Aix-Marseille 2, 1993. http://www.theses.fr/1993AIX22099.
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L'interaction fluide-structure est traitee a travers le simple exemple d'une plaque rectangulaire placee sous un ecoulement turbulent. Il s'agit dans ce travail de simuler numeriquement d'une part le mouvement de la plaque excitee par le champ de fluctuations de pression parietale (probleme structure) et d'autre part d'evaluer l'effet du mouvement de la plaque sur le comportement de la couche limite turbulente (clt) (probleme fluide). Le probleme structure est traite en supposant la plaque placee dans un milieu fluide au repos et excitee par un champ de pression de type clt (modele de corcos). L'interaction entre le fluide et la plaque est prise en compte par l'intermediaire de l'impedance de rayonnement. Le probleme fluide est resolu a l'aide des equations de navier-stokes pour lesquelles une modelisation de type energie cinetique-dissipation est utilisee. L'influence du mouvement de la plaque est prise en compte par l'energie produite par son mouvement et une equation modelisant la diffusion de cette energie a travers la clt. Les resultats montrent une modification des quantites turbulentes et du profil de la vitesse moyenne, surtout dans la zone externe de la couche limite
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Duan, Jialong. "Coordination inside centralized radio access networks with limited fronthaul capacity." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0052/document.
Full textAbstract:
Le réseau d'accès radio centralisé (C-RAN) peut fortement augmenter la capacité des réseaux mobiles. Cependant, la faisabilité de C-RAN est limitée par le débit considérable engendré sur les liaisons de transport, appelées également fronthaul. L'objectif de cette thèse est d'améliorer les performances de C-RAN tout en considérant les limitations du débit sur le frontaul, l'allocation de ressources et l'ordonnancement des utilisateurs.Nous étudions d'abord les séparations fonctionnelles possibles entre les têtes radios distantes (RRH) et les unités de traitement en bande de base (BBU) sur la liaison montante pour réduire le débit de transmission sur le fronthaul : certaines fonctions de couche basse sont déplacées du BBU vers les RRH. Nous fournissons une analyse quantitative des améliorations de performances ainsi obtenues.Nous nous concentrons ensuite sur la transmission coordonnée Multi-point (CoMP) sur le lien descendant. CoMP peut améliorer l'efficacité spectrale mais nécessite une coordination inter-cellule, ce qui est possible uniquement si une capacité fronthaul élevée est disponible. Nous comparons des stratégies de transmission avec et sans coordination inter-cellule. Les résultats de simulation montrent que CoMP doit être préféré pour les utilisateurs situés en bordure de cellule et lorsque la capacité du fronthaul est élevée. Nous en déduisons une stratégie hybride pour laquelle Les utilisateurs sont divisés en deux sous-ensembles en fonction de la puissance du signal. Les utilisateurs situés dans les zones centrales sont servis par un seul RRH avec une coordination simple et ceux en bordure de cellule sont servis en mode CoMP. Cette stratégie hybride constitue un bon compromis entre les débits offerts aux utilisateurs et les débits sur le fronthaulCentralized/Cloud Radio Access Network (C-RAN) is a promising mobile network architecture, which can potentially increase the capacity of mobile networks while reducing operators¿ cost and energy consumption. However, the feasibility of C-RAN is limited by the large bit rate requirement in the fronthaul. The objective of this thesis is to improve C-RAN performance while considering fronthaul throughput reduction, fronthaul capacity allocation and users scheduling.We first investigate new functional split architectures between Remote Radio Heads (RRHs) and Baseband Units (BBU) on the uplink to reduce the transmission throughput in fronthaul. Some low layer functions are moved from the BBU to RRHs and a quantitative analysis is provided to illustrate the performance gains. We then focus on Coordinated Multi-point (CoMP) transmissions on the downlink. CoMP can improve spectral efficiency but needs tight coordination between different cells, which is facilitated by C-RAN only if high fronthaul capacity is available. We compare different transmission strategies without and with multi-cell coordination. Simulation results show that CoMP should be preferred for users located in cell edge areas and when fronthaul capacity is high. We propose a hybrid transmission strategy where users are divided into two parts based on statistical Channel State Informations (CSIs). The users located in cell center areas are served by one transmission point with simple coordinated scheduling and those located in cell edge areas are served with CoMP joint transmission. This proposed hybrid transmission strategy offers a good trade-off between users¿ transmission rates and fronthaul capacity cost