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51.
  总被引:3,自引:0,他引:3  
The sea-level rise that may result from global climate change is placed within the context of past and present sea-level changes on Canadian coasts. To assess future impact, a dimensionless index of sensitivity is determined. Coasts with low, moderate, and high sensitivity constitute 67%, 30%, and 3% of the total coastline, respectively. The most sensitive regions are: (1) several parts of the Maritime Provinces; (2) two areas of the British Columbia coast; and (3) a large part of the Beaufort Sea coast. Impacts in four regions - Bay of Fundy, Beaufort Sea, Fraser Delta, and Eastern Shore of Nova Scotia - are discussed in detail. It is argued that the societal response to changes in sea level should favour retreat and accommodation strategies.
Il est possible que les changements climatiques globaux provoqueront une élévation du niveau de la mer. Nous examinons ce scénario dans le contexte des changements passés et présents du niveau de la mer sur les côtes canadiennes. Pour évaluer l'impact de l'élévation prévue un indice non dimensionnel de vulnérabilité est déterminé. Les côtes à la vulnérabilité basse, modérée et élevée constituent, respectivement, 67%, 30%, et 3% de tout le littoral. Les régions les plus vulnérables sont: (1) plusieurs régions dans les provinces maritimes; (2) deux zones sur la côte de la Colombie britannique; et (3) la plupart de la côte de la mer de Beaufort. Nous discutons en détail les impacts dans quatre régions, soit la baie Fundy, la mer Beaufort, la delta du Fraser et la rivage dit 'Eastern Shore' de la Nouvelle-Écosse. Nous estimons que la réponse sociale aux changements du niveau de la mer devrait favoriser des stratégies de retraite et d'accommodement.  相似文献   
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This paper poses the question of the place of rhetoric as a discipline. It addresses the topical demand that nature, art, and exercise have to be combined by way of an analysis of Isocrates' Against the Sophists. Its thesis is that the call for a “combination” of art and nature solves the disciplinary problems of rhetoric, even though such a synthesis is in fact inconceivable. Rhetoric is not a science, and does not have access to a methodical correlation of rhetorical strategies and their effects upon the audience. Isocrates' criticism of those rhetoricians who assume that their art could be taught in much the same way as the art of writing is of paramount importance here. The case of Isocrates is instructive because it shows how rhetorical success depends on re-designing the institutional structure of rhetoric and on the capacity to cope with its lack of methodical knowledge. As a result of its para-scientific nature, rhetoric refers to various models and metaphors to present itself as a discipline. Of these the orator perfectus, the orator imperfectus, and the sophist model of the art of writing as criticized by Isocrates are discussed. This paper attempts a rhetorical reading of the discourse of rhetoric by exploring the implications of these metaphors. At the same time it argues for a history of science which does not shrink away from an analysis of such para-sciences as rhetoric. It is precisely the lacking scientificity of rhetoric as a discipline which warrants increased attention from the point of view of the history of science.  相似文献   
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Based on the case of the Mohawk territory of Akwesasne, wedged between Ontario, Quebec, and New York state, this paper provides an analysis of the links between the affirmation of indigenous culture and the implementation of security policies on borderlands. The focus extends beyond political conflicts over border issues to encompass the ways in which Aboriginal sovereignty is affirmed within processes of negotiation and cooperation in the matters of identification requirements, border agents’ cultural sensitivity, and law enforcement. We find that the enhancement of border security can paradoxically be a political opportunity for local leaders to reaffirm indigenous sovereignty, and that this reaffirmation through cooperation is, at the same time, emerging as a key factor in the implementation of border security policies.  相似文献   
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The link between the Cold War and decolonisation is tackled by using the uniqueness of the complex Congo crisis and its neo-colonial elements, with a focus on agents and specific policies rather than theories and general themes. The ‘real’ Cold War is essentially defined as that followed by Kennedy, with its priority in the early 1960s, among the Cold War’s many different constituent elements, taken to be the winning of newly independent African nations to the socio-economic values and hoped-for developmental benefits of Western capitalism. The importance of using soft power to defeat the ideology of communism, as opposed to containing the allegedly expansionist Soviet aims in Africa, is highlighted. Clear distinctions are made between the Kennedy administration and those of Eisenhower and Johnson. Interpretations of decolonisation using the Congo’s particular neo-colonial circumstances have been rare, and interpretations of decolonisation in the Congo also require some qualification. In particular the role of the colonial state and its ‘partnership’ with private European enterprises, established under King Leopold, had economic consequences for the Belgian decolonisation process. The importance of the role of financial capital, as opposed to business interests simply represented through trade and industry, is emphasised. The role of the UN and its secretary general is also highlighted but not by using inaccurate perceptions of Hammarskjöld’s neutral Cold War stance. The different positions taken by the Belgians, the British and the Americans, embodying conflict and cooperation in different forms, are analysed at different times with the important consequences of the Belgian refusal to comply with UN Security Council Resolutions highlighted. The need to limit the damage from that and from the neo-colonialism of secession is analysed. Exaggerating the causal consequences of Soviet actions and accusing Lumumba, despite evidence to the contrary, of being a communist or vehicle for Soviet influence was what brought the Cold War to the Congo. The British refusal to do more than decline to support openly the neo-colonialism in Katanga, particularly by supporting action likely to end secession, threatened to damage relations with the US. Such action, which could have led to more military action, would have contributed to the success of US policy in the ‘real’ Cold War but at the expense of those British investors who were the main financial backers of the Conservative party.  相似文献   
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儒家文化以其强大的影响力和辐射力,在长期的文化交流过程中,被少数民族文化吸收,发生融合,同时被赋予民族特色,促进了少数民族的文化再创造。本文从总体上考察儒家文化在少数民族文化中的一系列变异过程和变异类型,即从作为知识,到作为尝试,再到成为习惯的变异过程;既保留内容又保留形式的原初变异类型、保留形式而内容变化或保留内容而形式变化的初步变异类型、内容形式完全本土化民族化的完全内化的变异类型。强调在建设现代文明的今天。应从少数民族文化存留的儒家文化申吸收精华.汲取有效资源.以资借鉴.  相似文献   
59.
Les échelles de temps sur les marchés financiers   总被引:1,自引:0,他引:1  
Modern financial modelling massively implements scaling laws to describe market fluctuations, with the use of stochastic processes in stock market price behavior equations. Scaling laws, which already existed as an implicit part of Brownian motion although notperceived at such, habe become increasingly and explicitely important, since the financial markets regulatory authorities have drawn the attention of the banking industry to the risk control issued posed by the ineffective current valuation achieved using the classical Gaussian distribution. The différent elements surrounding this debate are developed based around Mandelbrot's fractal models, which have underlined the main modelling conflicts of the behavior of stock market prices over the last forty years. I demonstrate that the root of the problem of whether scaling laws exist is the more fundemental issue of the nature of market time.  相似文献   
60.
Depuis plus d'un siècle, l'agriculture québécoise en général, et la production maraîchère en particulier, ont subi d'importantes transformations. Cette étude historique vise à comprendre comment la production maraîchère a évolué par rapport aux changements dans l'environnement décisionnel général de l'agriculture entre 1940 et 1990. L'analyse des données statiques de superficie, de production et de rendement pour 12 légumes ont permis d'identifier trois périodes, intercalées d'années transitoires, dans l'évolution de la production maraîchère référant chacune à une stratégie agricole particulière. La première (1940–1957) correspond à une stratégie agricole de type familial traditionnel; la seconde (1963–1975), à une agriculture marchande spécialisée fondée sur la maximisation des revenus à court terme par intensification; la troisième (1980–1990), à une agriculture marchande diversifiée fondée également sur une maximisation à court terme. Les facteurs externes de l'environnement décisionnel qui ont entraîné ces changements sont identifiés et discutès. For more than a century, Quebec agriculture in general, and market-gardening production in particular, have experienced important changes. This study, using a historical perspective, seeks to understand how market gardening evolved in relation to changes in the broad decision environment for agriculture between 1940 and 1990. Statistical analysis of data on the areas cultivated, production levels, and yields for 12 vegetable crops revealed three distinct periods, separated by periods of transition, in the evolution of market gardening. Each period is characterized by a particular type of agricultural development strategy. The first period (1940–1957) is characterized by a focus on the traditional family form; the second (1963–1975), by a specialized market agriculture driven by short-term income-maximization intensification; the third (1980–1990), by a diversified marketoriented agriculture, also based on short-term income maximization. External environmental factors that stimulated these changes are identified and discussed.  相似文献   
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