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   442篇
  免费   14篇
  2024年   1篇
  2023年   2篇
  2022年   4篇
  2021年   3篇
  2020年   5篇
  2019年   15篇
  2018年   18篇
  2017年   14篇
  2016年   23篇
  2015年   12篇
  2014年   13篇
  2013年   120篇
  2012年   11篇
  2011年   10篇
  2010年   7篇
  2009年   13篇
  2008年   20篇
  2007年   12篇
  2006年   11篇
  2005年   11篇
  2004年   9篇
  2003年   7篇
  2002年   8篇
  2001年   5篇
  2000年   7篇
  1999年   11篇
  1998年   4篇
  1997年   10篇
  1996年   4篇
  1995年   2篇
  1994年   8篇
  1993年   5篇
  1992年   4篇
  1991年   1篇
  1990年   3篇
  1989年   2篇
  1988年   2篇
  1987年   1篇
  1986年   4篇
  1985年   4篇
  1984年   4篇
  1983年   8篇
  1982年   1篇
  1981年   3篇
  1980年   3篇
  1979年   3篇
  1978年   1篇
  1977年   4篇
  1975年   2篇
  1971年   1篇
排序方式: 共有456条查询结果,搜索用时 15 毫秒
51.
Literature on citizenship canvasses three related issues: membership of a political community, the rights and obligations associated with that membership, and participation in the life of that polity. This paper investigates Indonesian women's experience of these aspects of citizenship in the twentieth century. As a plural society, Indonesia needs to accommodate gender differences within its notion of citizenship. Only women can ensure that this accommodation is worked through in an equitable manner.  相似文献   
52.
This article addresses two questions: (a)Why were so many new nonprofit organizations in New York City created to “fight AIDS?” and (b) What are some consequences of this phenomenon? Drawing on redundancy theory as a partial explanation, it also considers the role of racial and ethnic politics and the impact of government contracting on the formation and growth of community-based organizations. For clients, the effect has been paradoxical: financial support of a large number of organizations led to a complex and fragmented delivery system offering some clients a range of choices but decreasing access for those less able to navigate a complex system.  相似文献   
53.
Proximal radio‐ulnar synostosis (RUS) may occur congenitally, either as an isolated condition or as part of a syndrome, or it may occur as a secondary complication of forearm trauma. We provide a key for the differential diagnosis of congenital versus traumatic RUS, and for differentiation between types of congenital RUS. Congenital cases (CRUS) include absence of fracture, radial head abnormalities, radial shaft bowing, and absence of a sigmoid notch, whereas post‐traumatic RUS results from either radial neck fracture or evulsion of the biceps brachii, followed by ossification of the resulting haematoma or of the interosseous (IO) membrane. Congenital cases include those which result from incompetent differentiation of the single mesenchymal mass that gives rise to the radius and ulna (Type I) and those that result from radial head dislocation in utero, resulting usually from humeral or ulnar defects (Type II). Type II CRUS can be differentiated by the presence of radial overgrowth, among other factors. Following these guidelines, we describe and compare the morphology of three congenital cases from North America. Two present bony fusions and one a functional fusion with radial overgrowth. In each case, CRUS significantly limits both supination and pronation. Despite differences among the cases, several morphological accommodations are shared as a result of fixation in the neutral (semi‐pronated) position. These changes include the ventral migration of the IO crests of the ulnae and enlargement of the dorsal tubercles of the radius. Understanding the pattern of accommodations made in the face of compromised function ultimately increases our understanding of the patterns of growth in normal functional regimes. Copyright © 2000 John Wiley & Sons, Ltd.  相似文献   
54.
55.
A geophysical survey at the pyramid complex of Senwosret III at Dahshur sought to determine the suitability of magnetometry and electromagnetic induction (EMI, or conductivity) for mapping the area where several ancient boat-burials were found in the 1890s. At least one boat reported at the time of excavation remains unaccounted for. Tests demonstrated that magnetometry does detect subsurface structures of stone, fired brick, and unfired brick under current site conditions. Data indicated areas of geological activity as well as unexcavated archaeological remains, though no definitive traces of boat burials. No excavation was undertaken but another survey season is planned.
© 2009 The Authors  相似文献   
56.
James Madison argued in Federalist 10 that "rival political factions" work against the public good. In contrast to Madison's pessimistic account, I suggest that factional conflict can lead to more representative public policy, and thus further the will of the people. I theorize that elected officials often seek a safe political position—one that corresponds to the preferences of the public at large—during periods of high conflict. I assess this theory in one, salient policy area, medical malpractice. I measure conflict with contributions for state candidates given by (i) the health and insurance industries, which generally support malpractice laws, and (ii) lawyers, who frequently oppose the laws. I find that group conflict matters to policy outcomes. I also find evidence that, under conditions of elevated conflict, adopted policies are more likely to move toward the general ideological preferences of the public at large. These results suggest that group conflict affects both the quantity and character of policy in the American states.  相似文献   
57.
58.
59.
The last decade has witnessed a proliferation of research into the human dimensions of climate change in the Arctic. Much of this work has examined impacts on subsistence hunting, fishing, and trapping among Canadian Inuit communities. This scholarship has developed a baseline understanding of vulnerability and adaptation, drawing upon interviews with community members and stakeholders to identify and characterize climatic risks and adaptive strategies. To further advance this baseline understanding, new methodologies are needed to complement existing research if we are to capture the dynamic nature of how climate change is experienced and responded to, and fully engage communities as equal partners. Longitudinal studies, community‐based monitoring, and targeted adaptation research offer significant promise to advance understanding. These methodologies provide a strong basis for developing meaningful partnerships with communities, the co‐production of knowledge, and empowerment for adaptation: essential components of community‐based participatory research.  相似文献   
60.
This paper describes two approaches to the facial approximation of three individuals from the Wairau Bar burial site (New Zealand). Two individuals were approximated working in direct reference to the remains and incorporated manual drafting. The third individual, ‘Aunty’ (the respectful title given by the iwi Rangitane elders) was approximated from CT scans and using computer graphics. The computer graphic approach enabled a greater level of precision in the application of the research and recommendations that inform a facial approximation, and facilitated collaboration with appropriate expertise. The computer-graphic approach, however, also resulted in a more photographic facial appearance, which can imply a greater level of knowledge about hard/soft tissue relationships than is currently available.  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