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   2705篇
  免费   459篇
  2024年   8篇
  2023年   40篇
  2022年   16篇
  2021年   42篇
  2020年   85篇
  2019年   208篇
  2018年   188篇
  2017年   169篇
  2016年   186篇
  2015年   169篇
  2014年   159篇
  2013年   411篇
  2012年   234篇
  2011年   192篇
  2010年   169篇
  2009年   114篇
  2008年   149篇
  2007年   135篇
  2006年   95篇
  2005年   63篇
  2004年   47篇
  2003年   56篇
  2002年   41篇
  2001年   35篇
  2000年   37篇
  1999年   12篇
  1998年   8篇
  1997年   7篇
  1996年   7篇
  1995年   5篇
  1994年   4篇
  1993年   7篇
  1992年   3篇
  1991年   1篇
  1990年   1篇
  1988年   1篇
  1987年   2篇
  1985年   7篇
  1984年   8篇
  1983年   8篇
  1982年   8篇
  1981年   6篇
  1980年   6篇
  1979年   9篇
  1978年   6篇
排序方式: 共有3164条查询结果,搜索用时 187 毫秒
41.
Excavations at Muweilah have uncovered twelve buildings encircled by two pairs of walls and ditches. We have published preliminary studies of several buildings. Research has now progressed to a stage where it is possible to produce a more complete analysis of the architecture. In this report, we present a detailed discussion of the fortifications and each building with its installations. Our assessment of the architecture identified the repeated combination of three rooms in many of the buildings in the Central Area of Muweilah. Moreover, a detailed study of the fortifications revealed several means of accessing Building II, the columned hall, in the Western Area. These findings offer insights into the organisation of Iron Age II settlements in south‐eastern Arabia.  相似文献   
42.
43.
In Latin America, ethnicity is equated with indigenity. It is an objective of this article to review the legacy of Anthony Smith regarding the vitality of the ethnic past and the myth of origin, as the core of his theory of nationalism based on the weight of ethnocentrism. To this end, we address two routes, the use of the ethnic past and ethnicity by nationalists and founders of the state and, how indigenous intellectuals, on the other, have found a reinvention of their identities through various myths of Amerindian origin. Ethnic myths and the use of the ethnic past have been accepted, denied or rejected by nationalists, while indigenous peoples adhere to their own myths or seek to reinvent them. Mythical information is a component of identity but also requires institutions to disseminate such information among the group.  相似文献   
44.
ABSTRACT

A remote archipelago, Hawai'i, offers a plethora of sought after coastal and marine tourism experiences. The same unique marine fauna that draws tourists also makes Hawai'i a major player in the international ornamental aquarium trade. For many residents of Hawai'i, the marine realm is part of their island home and interactions with tourists and tourism activities are a part of everyday life. For many residents, the ocean is an important resource and for some a staple source of livelihood, be it through tourism, fisheries, or the aquarium trade. This variance between extractive and non-extractive marine resource use creates conflicts between stakeholder groups in Hawai'i. This study thematically analyzes public testimony records, which included 1652 individual testimonies, from proposed legislation aimed to establish ‘an aquatic life conservation program in the Division of Aquatic Resources to implement conservation measures, including limited entry areas and certification requirements, to regulate the collection of fish and other aquatic life for aquarium purposes. Public opinions evident in individual testimonies are representative of the disagreement in the literature regarding the stability and health of reef fishes populations in Hawai'i and broader resource-user conflicts. This study aims to better describe the user conflict between stakeholder groups in the marine resources of Hawai'i by exposing themes concerning change in natural environments.  相似文献   
45.
Alongside the institutionally constructed European identity, research shows that insights into citizens’ sense of belonging are valuable as well in assessing questions of identity. The tendency to conflate European identity with EU identity has spurred debates about the components that underlie European identification. The online subsidiarity adopted by the EU through e-platforms has allowed for a new form of citizenship where e-citizens (de)legitimate the issues under debate. This article examines the contents of European and national identities in the e-debaters’ comments posted on the Debating Europe platform. Drawing on narrative and discursive approaches, we propose a framework to operationalize the (de)legitimation and identification categories used by e-debaters within their discursive construction of European identity. The qualitative empirical research shows three main (de)legitimation clusters: the “EU as a loss,” “inclusive gain,” and “exclusive gain.” We discuss these findings within the broader context of Europeanization, identity multiplicity, and the conditions of the EU enlargement policy.  相似文献   
46.
This article examines how role theory can enhance the middle-power literature in understanding the role preferences of middle powers. Rather than treating it as merely a function of material capability or good international citizenship, this article resituates middle power as a concept of international status that states aim to pursue through the enactment of role conceptions. Thus, it reinstates a conceptual distinction between ‘middle-power status’ and ‘middle-power roles’. The article suggests that the notion of role conceptions can analytically connect the status-seeking behaviour of middle powers with their foreign policy agenda. In so doing, it provides a more nuanced explanation of middle-power behaviour, which might differ between one middle power and another. Using Indonesia and South Korea as case studies of middle power, this article contends that foreign policymakers have strategically conceptualised and enacted several main roles that aim to capture historical experience, as well as ego and alter expectations, in order to pursue middle-power status. These role conceptions determine the foreign policy agenda of states in articulating their middle-power status.  相似文献   
47.
A sailing replica based on the archaeological remains and structural analysis of the 6th‐century archaic Greek sewn boat Jules‐Verne 9 was built in Marseille as part of the city's European Capital of Culture 2013 programme. Full‐scale reconstruction allowed investigation of specific aspects of the methods used to build a shell‐first, sewn‐plank, and lashed‐frame vessel, as well as learning the gestures and know‐how of the original shipbuilders. The first two seasons of sailing trials, including short journeys in the Bay of Marseille and longer, coast‐hopping expeditions, reflecting the uses of the original vessel have taken place and are reported here.  相似文献   
48.
A shipwreck from the early 3rd century BC was discovered in the Black Sea's suboxic depths off Ere?li, Turkey, during the 2011 E/V Nautilus expedition. Remote investigation revealed the trawl‐damaged remains of a merchant ship carrying multiple amphora types associated with Aegean and Pontic production areas. Also discovered were elements of the ship's hull that show evidence of both pegged mortise‐and‐tenon and laced construction. The wreck provides crucial archaeological evidence for both maritime connectivity and ship‐construction methods during a period of political and economic transition.  相似文献   
49.
The seismic vulnerability of city centers is commonly assessed by extending the study methods applied to single buildings to urban aggregations. This approach is not always applicable at territorial scale, as it is uneconomical in terms of time and costs. An innovative method provides reasonable large-scale a priori estimation of parameters not directly evaluable from the exterior of buildings by elaborating values which can be measured from the outside. Those parameters are treated as continuous variables, by assigning them a suitable probability density function. The Bayesian approach is adopted, which allows the update of initial hypotheses by using new data gathered during on-site surveys. In this regard, a rapid survey form for the on-site data collection is proposed. An example of its application to a façade of a building structural unit in Santo Stefano di Sessanio in L’Aquila province (Italy) is proposed, showing promising preliminary results for buildings belonging to Italian historical centers.  相似文献   
50.
Fermentation is a common method of processing and preserving breadfruit throughout the Pacific Islands. While these pits are often reported in the archaeological record, they can pose some interpretive challenges. This paper presents an analysis of probable archaeological breadfruit (Artocarpus altilis (Parkinson) Fosberg) fermentation pits on Temwen Island, Pohnpei, Micronesia. Using the existing ethnographic record as a guide, I present archaeological and paleoethnobotanical criteria for identifying fermentation features. Architectural and stratigraphic analyses from four excavated pits match ethnographic expectations. Phytolith analysis shows some concurrence in terms of taxonomic data, but is more useful for indicating disturbance specific to building activities. Based on the distribution and size of pits present in the survey area, I suggest that breadfruit fermentation took place as primarily a household level (rather than community level) activity during the late prehistoric and early historic period in Pohnpei.  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