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The possibility of lead isotope fractionation in ancient lead production is examined. Kinetic theory relating to isotopic fractionation in non-equilibrium evaporation is considered and the feasibility of the alteration of lead isotope abundance ratios in ore roasting and smelting is assessed. Previous experimental work is shown to have been inconclusive and conclusions are drawn on the need for further research to quantify the possible extent of fractionation in practice.  相似文献   
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This paper demonstrates that the morphology of ordinary rural roads tells much about regional development. It uses southern Ontario as a case study, but the principles may be applied widely. It is a plea for recognition of a deep heritage in unspectacular things: ditches, fence-lines, culverts, jogs in the survey, and more. This paper also encourages local and regional planners to conserve signs of change in the roadscape and to celebrate them. Roadside evolution is worth publicizing, and unnecessary destruction of elements that enhance the story must be discouraged.
Cet essai démontre que la morphologie des routes rurales ordinaires en dit beaucoup au sujet du développement regional. On peut employer cet exemple de /'Ontario du sud mais les principes peuvent s'appliquer d'une manière plus large. Dans ce manuscrit on doit reconnaître /'heritage profond des elements communs: des caniveaux, des clotures, des aqueducs, des irrégularity de I'arpentage, etc. Cet essai encourage aussi les planificateurs i conserver ces signes du paysage routier et à les mettre en Évidence. On doit les faire connaître au public, et décourager leur déstruction.  相似文献   
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While the cancellation of a number of high‐profile loans because of corruption concerns has made headline news, the World Bank's principal approach to poorly governed countries is lending in order to support reforms. Although designed to be an apolitical technocratic development financier, increasingly the Bank has focused its attention and resources on promoting good governance in its borrowers. Bank lawyers and presidents have attempted to hive of apolitical aspects of governance by arguing a distinction between the rule of law and the political character of government, but this distinction is illusory. The Bank's inability to address the political embeddedness of poor governance in neo‐patrimonial governments skews risk assessments and impedes the formation of effective strategies. Reform of the charter would not eliminate the Bank's bureaucratic and political constraints.  相似文献   
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Expectations of significant progress towards a nuclear weapons‐free world continue to shape global nuclear politics. Progress towards nuclear disarmament will require diminishing the value of nuclear weapons to the point where it becomes politically, strategically and socially acceptable for nuclear‐armed states to relinquish permanently their nuclear arsenals. Key to this are the concepts and processes of ‘devaluing’ and ‘delegitimizing’ nuclear weapons that have steadily coalesced in global nuclear discourse since the mid‐1990s. This article builds on current research by developing three images of nuclear disarmament under the Nuclear Non‐Proliferation Treaty (NPT): ‘surface’ devaluing, ‘deep’ devaluing, and delegitimizing nuclear weapons. The first represents codification by the nuclear‐weapon states of the transformation of the Cold War environment through reductions in the size and role of nuclear arsenals that leaves the logic of nuclear deterrence and nuclear prestige largely unchanged. Deep devaluing is framed as a reconceptualization of the political, strategic and military logics that underpin nuclear‐weapons policies and practices. Delegitimizing represents a more radical normative project to transform collective meanings assigned to nuclear weapons. The analysis examines conceptions of devaluing nuclear weapons from the perspective of non‐nuclear weapon states and the relationship between devaluing nuclear weapons and the idea of a spectrum of nuclear deterrence. It concludes by highlighting the tension between surface and deep devaluing, the emergence of a delegitimizing agenda, and the political implications for the current NPT review cycle set to culminate in the next quinquennial Review Conference in 2015.  相似文献   
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This essay analyzes the carved footprints in the Iron Age temple at ‘Ain Dara, Syria from a broadly comparative perspective. This methodology is necessitated by the fact that footprint iconography is very rare in ancient Near Eastern art. The diverse examples utilized in this paper to help explicate the footprints at ‘Ain Dara range from the Footprints of the Buddha (Buddhapadas) to the sullied feet of Jesus. Through analysis of footprint iconography in other religious contexts, I have drawn conclusions concerning the form and function of the temple footprints at ‘Ain Dara that have escaped other scholars of the ancient Near East.  相似文献   
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Recent analysis on the prospects for achieving a world free of nuclear weapons has tended to focus on a set of largely realist strategic security considerations. Such considerations will certainly underpin future decisions to relinquish nuclear weapons, but nuclear disarmament processes are likely to involve a more complex mix of actors, issues and interests. The article examines this complexity through a sociological lens using Britain as a case‐study, where relinquishing a nuclear capability has become a realistic option for a variety of strategic, political and economic reasons. The article examines the core ideational and organizational allies of the UK nuclear weapon ‘actor‐network’ by drawing upon social constructivist accounts of the relationship between identity and interest, and historical sociology of technology analysis of Large Technical Systems and the social construction of technology. It divides the UK actor‐network into three areas: the UK policy elite's collective identity that generates a ‘national interest’ in continued deployment of nuclear weapons; defence–industrial actors that support and operationalize these identities; and international nuclear weapons dynamics that reinforce the network. The article concludes by exploring how the interests and identities that constitute and reproduce the ‘actor‐network’ that makes nuclear armament possible might be transformed to make nuclear disarmament possible. The purpose is not to dismiss or supplant the importance of strategic security‐oriented analysis of the challenges of nuclear disarmament but to augment its understanding by dissecting some of the socio‐political complexities of nuclear disarmament processes.  相似文献   
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