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   134篇
  免费   7篇
  2023年   7篇
  2022年   1篇
  2021年   1篇
  2020年   3篇
  2019年   6篇
  2018年   3篇
  2017年   12篇
  2016年   5篇
  2015年   3篇
  2014年   11篇
  2013年   34篇
  2012年   3篇
  2011年   4篇
  2010年   6篇
  2009年   6篇
  2008年   3篇
  2007年   1篇
  2006年   6篇
  2005年   1篇
  2004年   2篇
  2000年   2篇
  1998年   1篇
  1996年   1篇
  1994年   1篇
  1993年   2篇
  1990年   3篇
  1988年   1篇
  1987年   2篇
  1986年   1篇
  1982年   1篇
  1981年   2篇
  1980年   2篇
  1978年   2篇
  1974年   1篇
  1968年   1篇
排序方式: 共有141条查询结果,搜索用时 15 毫秒
41.
42.
43.
Plant macrofossils, pollen, fungal spores and other non-pollen palynomorphs (NPPs), were analyzed in three archaeological exposures established in a small area in the oldest part of the historic city of Gdańsk. One of the aims was to investigate how precisely the combined pollen and macrofossil data may reflect the diversity of local habitats within an urban archaeological site and to compare the range of information obtained using each of the methods separately. The other aim of the study was to reconstruct the environmental conditions in the earliest occupied area of the historic centre of Gdańsk. The repeatable composition and, in many points, consistency among pollen and macrofossil data in all three profiles strongly suggest that the apparently biased structure of these fossil remains in fact reflects a mosaic pattern of the vegetation in the area of the site. The combined pollen and macrofossil data enabled separation of local elements from those transported to the site by different means. The results show that already at the beginning of the 12th c., the area was almost totally deforested, but up to the mid-13th c. the settlement organization was still relatively loose, resembling a rather rural structure with well-developed ruderal plant communities and patches of semi-natural vegetation. At the coring area, strongly eutrophic riparian vegetation was bordering patches of dry grassland on a sandy holm. The large proportion of pollen of various entomophilous plants mostly from meadows and pastures is explained as a result of the presence of dung, as confirmed by the abundances of coprophilous fungal spores. The study indicates that parallel pollen and macrofossil analysis is essential for correct interpretation of fossil assemblages. Application of both methods enables broadening of the range of remains representing various organisms and obtaining more precise tools for environmental reconstruction and better understanding of the taphonomic processes at the archaeological site.  相似文献   
44.
45.
Over 200,000 people became internally displaced after several violent conflicts in the early 1990s in Georgia. For many internally displaced persons (IDPs), gender relations have been transformed significantly. This translates to many women taking on the role of breadwinner for their family, which often is accompanied by the process of demasculinization for men. In this article, we examine the construction of masculinities and analyze the gendered processes of displacement and living in post-displacement for Georgian IDPs from Abkhazia. We identify the formation of ‘traumatic masculinities’ as a result of the threats to, though not usurpation of, hegemonic masculinities. Drawing on interviews, we highlight how IDPs conceptualize gender norms and masculinities in Georgia. Despite the disruptions that displacement has brought about, with the subsequent challenges to IDPs' ideal masculine roles, the discourses of hegemonic masculinities still predominate amongst IDPs. We further illustrate this point by identifying two separate gendered discourses of legitimization that attempt to reconcile hegemonic masculinities with the current contexts and circumstances that IDPs face. These new traumatic masculinities do coexist with hegemonic masculinities, although the latter are reformed and redefined as a result of the new contexts and new places within which they are performed.  相似文献   
46.
The popularity and prevalence of strategic alliances for problem solving has been well documented in research on the corporate sector and public policy. However, there has been limited work to date on building a comprehensive theory about the evolutionary process of alliances. The purpose of this article is to synthesize current research on alliance development in order to develop a model of strategic alliance evolution. The theoretical model is built with ideas from prior research as well as findings from our own recent research on alliances in education. We conducted a national study of strategic alliances in charter schools focused on uncovering the process of evolution—including how alliances are initiated, operated, and evaluated—and the various internal and external factors that influence alliance development and progress. Our findings offer a model of strategic alliance evolution and provide direction for future research.  相似文献   
47.
48.
49.
50.
Excavations at Soba, the capital of Alwa, between 2019 and 2022 yielded more than 30 glass fragments in addition to a glass cosmetic bottle. An analysis of 30 glass samples has identified glass belonging to a number of compositional groups. The majority of fragments were made of plant ash-soda glass produced in the Middle East (Iran, Iraq) between the 9th and 10th centuries, and in the Eastern Mediterranean (Levant and Egypt) between the mid-10th and mid-12th centuries. Seven fragments were made of mineral–soda-lime glass produced in 9th-century Egypt and three high-lead glasses find analogies in the 9th- to 11th-century glass. Archeological evidence, as well as textual sources, leave no doubt about Alwa’s intense transcultural connections. This article provides the first insight into the chemistry of glass shards from medieval Nubia, and the results of analysis contribute to evidence for long-distance contacts of Soba, the capital of one of the medieval kingdoms of Sahelian Africa.  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