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   90篇
  免费   10篇
  2022年   1篇
  2020年   5篇
  2019年   5篇
  2018年   7篇
  2017年   9篇
  2016年   4篇
  2015年   7篇
  2014年   8篇
  2013年   26篇
  2012年   2篇
  2011年   6篇
  2010年   2篇
  2009年   2篇
  2008年   2篇
  2007年   2篇
  2004年   2篇
  2002年   1篇
  2001年   1篇
  1999年   1篇
  1995年   1篇
  1994年   1篇
  1987年   1篇
  1985年   1篇
  1983年   1篇
  1978年   1篇
  1970年   1篇
排序方式: 共有100条查询结果,搜索用时 15 毫秒
21.
In mountain areas without permanent settlements, human activity is entirely dependent on spatial interaction. For centuries, local and regional traffic has followed livestock trails and footpaths. Mainly during the 20th century, new public and private roads changed this situation significantly in large parts of Norway. While mountain summer farming decreased, hydropower development and leisure use became dominant. Protected areas have been established to preserve possibilities for outdoor recreation and ‘wilderness’. However, seasonal farming activity is still an important upholder of cultural heritage. In the investigated area in western Norway, parallels between accessibility and human activity on mountain summer farmsteads have been identified with the abandonment of dairy production between ca 1905 and 1973, recent use by landowners and hikers’ use of publicly accessible tourist cabins. Increased differences in accessibility and protection status have resulted in diversification of human activity in different locations. Custom and tradition represent different principles according to which cultural landscape can be maintained—with emphasis on dynamics or invariance, respectively. Recent landscape protection focuses primarily on tradition. The necessity of easy access to maintain the living cultural heritage in addition to ‘wilderness’ areas, however, requires taking both concepts into account, most probably treated as geographically separate.  相似文献   
22.
23.
Reference codes are described for wear states in the mandibular cheek teeth of sheep and goats.  相似文献   
24.
This paper addresses the emotional dimensions of academic mentorship from a student mentee perspective and contributes to an emerging literature on geographies of emotion in higher education. It presents a pedagogical practice of self-reflexive co-mentorship – self-peer-ceptive feminist mentoring – and deploys it methodologically to analyze three biographical narratives. From different student mentee vantage points, these narratives reveal how the scales of the body, the family, and the nation are interwoven within the geopolitical and manifest within mentoring relationships. We argue that self-peer-ceptive feminist mentorship allows people at different academic career stages to share personal experiences of navigating the academy as a means to challenge institutional systems of power. Our argument answers three questions: How and why do we express and manage our emotions in mentoring relationships? What spatial scales are invoked through our emotional experiences and with what implications? How are different power structures embedded in the requirements, practices, successes, and failures of emotional management? Our discussion highlights how emotional masking and spill-outs are tools to navigate the emotional terrain of the neoliberalized academy. We conclude that self-peer-ceptive feminist mentoring can unsettle the structural hierarchies that require a “masking” of feelings for the sake of professional distance.  相似文献   
25.
Today, there should be little doubt that new reproductive technologies have ‘diversified, globalized, and denaturalized’ human reproduction (Inhorn and Birenbaum-Carmeli 2008). Not only have assisted reproductive technologies developed and spread throughout the world at a rapid pace, but this significant development has also given rise to a global market of cross-border reproductive care (CBRC). This article seeks to investigate CBRC between Sweden and the Baltic states, in which Swedish infertility patients travel to private fertility clinics as recipients of egg donation. This article argues that the restructuring of the European space (occurring in and through both the so-called ‘transition’ of the former Eastern Bloc and the expansion of the European Union) constitutes crucial conditions of emergence for the trans-European market of infertility care, which not only results in new modalities of reproductive mobility but also articulates a new set of interrelated European gendered reproductive subjectivities. Particular attention will be paid to the ways in which such ‘new reproductive subjectivities’ – here exemplified by a sample of cross-border donor egg recipients – are articulated in relation to notions of ‘choice’ and what I call ‘biodesirability’, and how such notions cannot be exempt from its specific post-socialist European context.  相似文献   
26.
27.
28.
29.
The metalworking, metal import, and use of metal in medieval Iceland is still little understood. When the Scandinavian settlers colonized Iceland in the 9th c. AD, the island was found to contain no useful metal deposits save for bog iron, and the deforestation that followed the settlement resulted in a scarcity of wood. Only in the last decades have archaeological excavations begun to unravel how the first Icelanders dealt with this lack of resources. This paper presents the metallurgical findings from a Viking Age chieftain's farmstead at Hrísbrú in the Mosfell valley, located just outside Iceland’s present-day capital Reykjavik. The excavated metal objects had all been crafted with good workmanship employing technology similar to that used in mainland Scandinavia. However, most excavated metal finds show evidence of re-use, which together with the second-grade metal in some of the objects indicates a shortage of raw material that prompted the Icelandic colonizers to improvise and make do with whatever material was at hand.  相似文献   
30.
This study presents test measurements on a Lexsyg luminescence reader, acquired by the Giessen luminescence group. The reader is of the type Standard, hence designed for routine determination of palaeodoses using quartz or K-feldspars. The tests include measurements of the stimulation powers, preheat temperatures, OSL- and TL-curves, as well as dose recovery tests and calibration measurements using highly sensitised calibration quartz. A comparison of D e values determined using a Lexsyg reader with single grain D e-values, which have been previously obtained on a Risø reader, is also presented. The results imply that the Lexsyg reader is a highly reliable measurement device with high reproducibility, yielding instrumental uncertainties of around 0.3%.  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