首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   28篇
  免费   1篇
  2019年   1篇
  2016年   1篇
  2013年   3篇
  2012年   4篇
  2011年   3篇
  2010年   3篇
  2009年   2篇
  2008年   1篇
  2007年   3篇
  2006年   1篇
  2003年   1篇
  1998年   1篇
  1997年   1篇
  1994年   1篇
  1993年   1篇
  1991年   1篇
  1986年   1篇
排序方式: 共有29条查询结果,搜索用时 15 毫秒
11.
12.
Three works are reviewed that make significant contributions to anthropological linguistics. Two address theoretical and ethnographic concerns regarding linguistic ideologies and the dilemmas they pose for speech practices such as text regulation. Such practices are harnessed to cultural projects such as language modernization and nationalism. The third, a post-structuralist reading of language-and-culture studies concerned with orality and literacy, brings post-structuralist theory into conversation with ethnographers of communication and other students of language. This article argues that such an intervention is welcome and long overdue, though it questions what form this intervention should take.  相似文献   
13.
This paper examines why Simon (d. 1148), the chronicler of the abbey of Saint‐Bertin in Flanders, designated all of the remaining evidence for sixty years of the communal past as ‘unmemorable’. An analysis of the chronicler's sources and context of writing reveals that his rejection of these memories was determined both by personal experience and the desire to advocate the legitimacy of the then current reforms. To these factors he subordinated the need to provide his fellow monks with a sense of historical continuity and the opportunity to present a troubled but significant part of the abbey's history.  相似文献   
14.
POTENTIAL IMPACTS OF GLOBAL SEA-LEVEL RISE ON CANADIAN COASTS   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   
15.
The oil monarchies of the Persian Gulf region have typically been portrayed as patriarchal autocracies characterized by traditional tribal rule that have taken on the characteristics of a modern state. The historical debate on these rentier states has centred on how their substantial oil income since the 1970s has allowed them to pacify their citizenry from making demands for enfranchisement. Power was thus firmly able to rest with the elites. Since the end of the Cold War, winds of change flamed the desire for reform and the late 1990s saw significant political changes. The empirical data indicates that this pace has increased, albeit at differential speeds, within the context of the post‐9/11 war on terror. Interestingly, this has been the case despite turmoil in Iraq and a shift to the right in Iranian politics. The fundamental drivers of reform in the Arab oil monarchies continue to be the ruling elites themselves, however. The character of the reforms does appear to be mainly liberalizing rather than democratizing, but developments in some oil monarchies suggest that this process can be viewed as an early or intermediate stage of a wider enfranchisement of civil society.  相似文献   
16.
17.
Recent Australian research has quantified the role of large wood (wood of any origin and length with a diameter greater than 0.1 m) in dissipating stream energy, forming pool habitats by local bed scour, protecting river banks from erosion, and damming rivers with long rafts causing avulsions. Large wood in Australian streams is sourced by a range of processes from the nearby riparian zone which has usually been degraded by post‐European settlement vegetation clearing. Large wood loadings within the bankfull channel are dependent not only on the type and quality of the riparian plant community but also on bankfull specific stream power, channel width, and the processes of large wood delivery to the stream. While bank erosion and floodplain stripping by catastrophic floods are obvious and important delivery mechanisms, treefall and trunk and branch breakage by strong winds during tropical cyclones and severe storms are also significant in the tropics. Furthermore, wood decay and downstream transport produce temporally dynamic large wood distributions. The longevity of natural large wood structures in rivers, such as rafts, debris dams, and log steps, requires determination. River rehabilitation programs need to not only include the reintroduction of large wood, but also carefully plan the spatial distribution of that wood, the most appropriate type and range of large wood structures, and, most importantly, the revegetation of the riparian zone to ensure a natural long‐term source of large wood. Exotic species management is an essential part of river rehabilitation.  相似文献   
18.
The city of Port Vila, Vanuatu, is located in one of the most active seismic regions on earth. Earthquakes are felt frequently and, due to very rapid plate convergence rates, return period of large earthquakes (M>6) in the New Hebrides Benioff zone can be less than 10 years. Even though Port Vila does not lie on an identified seismic fault zone, strong motions by nearby earthquakes have to be expected due to the city's geographical location close to the plate boundary of New Hebrides convergence zone. An accurate estimation of the seismic ground motion across the city is of prime importance for urban developments and mitigation of earthquake risk. Following many examples of monitored strong earthquakes in the current century, it is evident that the local site effects may have a dominant contribution to the intensity of damage and destruction. In this study we focussed on the first stage of associating site effects and seismic hazard by preparing a microzonation map for Port Vila. The seismic microzonation of the city has been carried out to provide a detailed map of the zones that exhibit site effects in terms of resonance frequencies and approximated amplification of the ground shaking. Having in mind that these data will be used in improving building design to sustain strong ground motions, our analysis is limited to the frequency band of 1–10 Hz, corresponding to the expected resonance of different types of buildings in Port Vila. The Nakamura technique has been used to estimate site amplification effects from single station noise recordings. Interestingly, excluding one site located on an old dump zone, the amplification factors at about the 100 sites surveyed in Port Vila remain below 3 with an average well below 2 in the 1 to 10 Hz frequency band. These results suggest that there is no significant Vs velocity change in consequently layered material and that the uppermost sedimentary layers in the surveyed down town area are relatively thin. These observations are in agreement with the mapping of limestone terraces throughout Port Vila area. However, both the surface geology and results from seismic zonation indicate a thicker (up to several tens of meters) sedimentary cover around the Bauerfield airport and in the Mele terrace zone. Low resonance frequencies (around and below 1 Hz) and amplification factor of the order of 5 were observed over this large area, immediately outside Port Vila. Any building development in this area should take these results into account.  相似文献   
19.
Why should past occurrences matter to us as such? Are they in fact meaningful in a specifically historical way, or do they only become meaningful in being connected to other sorts of meaning—political or speculative, for example—as many notable theorists imply? Ranke and Oakeshott affirmed a purely historical meaningfulness but left its nature unclear. The purpose of this essay is to confirm historical meaningfulness by arguing that our commanding practical interest in how we share action with other actors is distinctively engaged by presumed information about past occurrences. We recognize that past occurrences have determined the conditions of action sharing, constraining our practice with regard to which actors we share practical reality with and which compounding actions we may or must join in progress.  相似文献   
20.
Some have argued that NATO's air campaign against Serbia in 1999 was manifestly unlawful, others that it was an entirely legitimate humanitarian intervention. A third position suggests that the intervention while unlawful, in the strictest sense, was nonetheless legitimate. Here, a customary law right to intervene was seen as emerging, permitting action to prevent a mass atrocity crime, even when UN Security Council authorization was absent. Did Operation Allied Force, then, add to the case for the emergence of this new customary norm? While the 1990s was a decade of humanitarian intervention, the decade since has been dominated by international action against terrorism and, of course, the effects of the highly controversial US and British led invasion of Iraq. In this context, there is scant evidence that a customary right or obligation to intervene for humanitarian reasons has crystallized since 1999. But if Kosovo achieved anything, it was to prompt greater attention to the merits of the argument in favour of a ‘responsibility to protect’. If NATO's 1999 action were repeated today in a similarly unauthorized manner it would still be unlawful, but it would perhaps be seen as a legitimate means to preventing a mass atrocity crime.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号