826 resultados para endurance
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The present political climate in which the ideals of entrepreneurship and self-help are strongly encouraged has drawn attention to those ethnic minorities noted for their entrepreneurial activity. Since the Chinese appear to be an exemplary case in point, this thesis focusses upon the historical material conditions which have led to the formation of a Chinese 'business* community in Britain, both past and present As such, it rejects the theories of cultural determinism which characterise most studies of the Chinese. For rather than representing the endurance of cultural norms, the existence of the contemporary Chinese 'niche' of ethnically exclusive firms in the catering industry is due to the conjunction of a number of historical processes. The first is the imperialist expansion into China of Britain's capitalist empire during the nineteenth century which established a relationship of dependency upon the interests of British capital by colonial Chinese labour. The second is the post war development of the catering industry and its demand for cheap labour as administered by the British state together with the contemporaneous development of the agricultural economy of colonial Hong Kong. Far from representing a source of material benefit to all, the ethnic Chinese 'niche' in catering is highly exploitative and merely underlines the racial oppression of Chinese in Britain. Attempts to promote business interests within the ethnic community therefore serve merely to entrench the structures of oppression.
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Automotive catalysts are the most effective short-term answer to air pollution from automobiles. Since strict control of exhaust emissions is, or will be,covered by legislation in most developed countries in the world, catalytic devices will be increasingly fitted to cars. There is consequently an urgent need for the development of catalysts that will not compete for scarce precious metal resources. A number of problems have already been identified in connection with base metal catalysts but quantitative investigations are lacking. The base metal reduction catalysts developed by Imperial Chemical Industries Limited, catalysts and Chemical Group, in collaboration with the Air Pollution Control Laboratory, B L Cars Limited for automotive emission control, are susceptible to de-activation by three major mechanisms. These are: physical loss of the wash-coat (a high surface area coating which supports the active species), aggregation of the active species and poisoning by fuel and engine oil additives. This thesis is especially concerned with the first two of these and attempts to indicate the relative magnitude .of their effect on the activity of. the catalysts. Aggregation of the active species or sintering, as it is loosely called, was studied by using impregnated granules to overcome effects due to the loss of the wash-coat. Samples were aged in a synthetic exhaust gas, free from poisons, and metal crystallite sizes were measured by scanning-electron microscopy. The increase in particle size was correlated with the loss in catalytic activity. In order to maintain a link with the real conditions of service a number of monolithic catalysts were tested in an engine-dynamometer and several previously tested endurance catalysts were examined. A mechanism is proposed for the break-up and subsequent 10s.5 of the wash-coat and suggestions for improved resistance to loss of the' coating and active species are proposed.
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Hydrocarbons are the most common form of energy used to date. The activities involving exploration and exploitation of large oil and gas fields are constantly in operation and have extended to such hostile environments as the North Sea. This enforces much greater demands on the materials which are used, and the need for enhancing the endurance of the existing ones which must continue parallel to the explorations. Due to their ease in fabrication, relatively high mechanical properties and low costs, steels are the most widely favoured material for the construction of offshore platforms. The most critical part of an offshore structure prone to failure are the welded nodal joints, particulary those which are used within the vicinity of the splash zones. This is an area of high complex stress concentrations, varying mechanical and metallurgical properties in addition to severe North Sea environmental conditions. The main are of this work has been concerned with the durability studies of this type of steel, based on the concept of the worst case analysis, consisting of combinations of welds of varying qualities, various degrees of stress concentrations and the environmental conditions of stress corrosion and hydrogen embrittlement. The experiments have been designed to reveal significance of defects as sites of crack initiation in the welded steels and the extent to which stress corrosion and hydrogen embrittlement will limit their durability. This has been done for various heat treatments and in some experiments deformation has been forced through the welded zone of the specimens to reveal the mechanical properties of the welds themselves to provide data for finite element simulations. A comparison of the results of these simulations with the actual deformation and fracture behaviour has been done to reveal the extent to which both mechanical and metallurgical factors control behaviour of the steels in the hostile environments of high stress, corrosion, and hydrogen embrittlement at their surface.
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E-satisfaction as a construct has gained increasing importance in the marketing literature in recent times. The examination of consumer satisfaction in an online context follows the growing consensus that in Internet retailing, as in traditional retailing, consumer satisfaction is not only a critical performance outcome, but also a primary predictor of customer loyalty and thus, the Internet retailer's endurance and success. The current study replicates the initial examination of e-satisfaction within the U.S. by [Szymanski, David M., & Richard T. Hise (2000). E-satisfaction: An initial examination. Journal of Retailing, 76(3), 309–322] among a sample of online consumers drawn from Germany. The replication was extended to two contexts—consumer satisfaction with Internet retail shopping and consumer satisfaction with Internet financial services sites. The results yield rich insights into the validity of extending the measurement and predictors of e-satisfaction to a trans-national context.
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Purpose – The purpose of this paper is to provide an understanding of the origins and journey of the fundamental ideas underpinning Michael Porter’s The Competitive Advantage of Nations as a means of assessing its influence. Design/methodology/approach – Drawing on a reflection of the book’s text and associated works by Porter, the paper shows how Porter’s thinking evolved from his earlier writings, as well as how his ideas went through further periods of development following the publication of The Competitive Advantage of Nations. Findings – The paper focuses on the emergence of Porter’s cluster theory and his growing acknowledgement of the role of innovation within processes of economic development. It shows how these concepts have provided a foundation for contemporary economic development practices. Also, the paper highlights how the fundamental concepts of Porter’s text have shifted from a unit of analysis focused on nations to one where subnational regions are the primary analytical unit. Originality/value – The paper concludes by suggesting that the nature of Porter’s conceptual insights is likely to ensure the long-term endurance of the fundamental lessons contained within The Competitive Advantage of Nations.
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Nutrition is an important component in chronic disease prevention. Diet plays an important role in the athletic performance and the overall health of the amateur bicyclists; yet information concerning diet and amateur bicyclists is lacking. This was a cross-sectional, convenience sample of 125 amateur bicyclists ages 18-65 years from South Florida who consented to SurveyMonkey, web-designed survey on nutrition knowledge. The survey was validated for endurance runners. Less than one-quarter of the participants had adequate nutrition knowledge (score of 75% or higher). Female bicyclists scored higher on nutrition knowledge as compared to males. There were no differences in nutrition knowledge by race, marital status, education or income. Accessibility to nutrition information is abundant, yet the validity of this information is questionable. Amateur bicyclist may not have access to the health professionals available to professional athletes. There is a need for nutrition counseling targeting amateur athletes.
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Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.
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Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.
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Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.
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Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.
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Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.
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Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.
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Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.
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Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal.
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In the wake of the Cold War, regional organizations have proliferated and are now a dominant theme in global politics. This study tests whether explanations for the Nordic peace can help to understand or construct other zones of peace in these increasingly important regional settings. With that in mind, this study compares the Nordic area of Denmark, Finland, Iceland, Norway, and Sweden with the Southern Cone region–here defined as Argentina, Chile, Paraguay, and Uruguay–and both are treated as regional, subsystemic zones of peace. Its significance lies in analysis of two developmentally disparate regions not yet compared in zones of peace literature. Using structured, focused comparison, this study is guided by fundamental questions about each region that assess the relationship between explanations for regional peace and their respective historical records. Understanding the conditions that permit the endurance of peace in today’s global context has far-reaching empirical and theoretical implications.