全文获取类型
收费全文 | 2974篇 |
免费 | 97篇 |
出版年
2020年 | 28篇 |
2019年 | 67篇 |
2018年 | 65篇 |
2017年 | 86篇 |
2016年 | 89篇 |
2015年 | 72篇 |
2014年 | 75篇 |
2013年 | 1089篇 |
2012年 | 48篇 |
2011年 | 57篇 |
2010年 | 78篇 |
2009年 | 60篇 |
2008年 | 57篇 |
2007年 | 58篇 |
2006年 | 36篇 |
2005年 | 33篇 |
2004年 | 42篇 |
2003年 | 41篇 |
2002年 | 33篇 |
2001年 | 39篇 |
2000年 | 41篇 |
1999年 | 29篇 |
1998年 | 35篇 |
1997年 | 34篇 |
1996年 | 24篇 |
1995年 | 31篇 |
1994年 | 23篇 |
1993年 | 26篇 |
1992年 | 29篇 |
1991年 | 19篇 |
1990年 | 19篇 |
1989年 | 24篇 |
1988年 | 30篇 |
1987年 | 32篇 |
1986年 | 29篇 |
1985年 | 37篇 |
1984年 | 20篇 |
1983年 | 41篇 |
1982年 | 34篇 |
1981年 | 23篇 |
1980年 | 27篇 |
1979年 | 35篇 |
1978年 | 32篇 |
1977年 | 26篇 |
1976年 | 24篇 |
1975年 | 25篇 |
1974年 | 26篇 |
1973年 | 22篇 |
1972年 | 27篇 |
1969年 | 15篇 |
排序方式: 共有3071条查询结果,搜索用时 15 毫秒
71.
72.
Cultural resource management (CRM) work accounts for most of the archaeology conducted in the United States. A diverse and
somewhat fragmented field, CRM has nonetheless achieved a degree of institutional and organizational maturity. CRM archaeology
has produced important contributions to archaeological methodology and has established and refined knowledge of regional cultural-historical
sequences and settlement and subsistence patterns. The current florescence of historical archaeology is attributable to CRM.
Yet the maintenance of high quality in CRM is a pervasive and enduring problem. Academic institutions need to reestablish
alliances with the CRM community. The future viability of CRM archaeology depends on factors both internal and external to
the discipline: regulatory and statutory “reform,” agency funding levels, looting and other destructive forces, and Native
American and other public involvement. 相似文献
73.
74.
Robert Seeliger 《政策研究杂志》1996,24(2):287-306
This article develops criteria to classify the relative development of public policies across countries as convergent, divergent, identical and synchronous, and indeterminate. It emphasizes that relative policy developments have to be compared over defined time periods, and that they cannot be aggregated or averaged over several time periods, or across policy sectors or policy dimensions. The significance of policy convergence between countries needs to be evaluated against relative policy developments between other countries during the same period. Given these rigorous conceptual and methodological requirements, it is doubtful whether policy convergence is as pervasive as generally assumed in the literature. 相似文献
75.
76.
77.
After over a century of archaeological research in the American Southwest, questions focusing on population aggregation and abandonment continue to preoccupy much of Pueblo archaeology. This article presents a historical overview of the present range of explanatory approaches to these two processes, with a primary focus on population aggregation in those regions occupied by historic and prehistoric Pueblo peoples. We stress the necessarily complementary nature of most of these explanations of residential abandonment and aggregation. Case studies from the northern Southwest illustrate the continuous nature of these processes across time and space. We suggest that additional explanatory potential will be gained by the use of well-defined theoretical units to frame our current approaches. We extend the use of the local community concept as a theoretical unit of organization that, along with explicit archaeological correlates, should help advance our research into population aggregation and abandonment in this and other regions of the world. 相似文献
78.
Robert Hassink 《European Planning Studies》1996,4(2):167-184
Many regions in Western Europe have set up technology transfer agencies in order to support endogenous potential by encouraging the diffusion of new technologies from universities and large firms to small and medium‐sized enterprises (SMEs). However, many studies have shown that business partners such as customers and suppliers are the most important partners for the stimulation of the innovativeness of SMEs. Universities and transfer agencies are given a very low rank in these studies. These results have led to doubts about the usefulness of these institutions for regional economic development. In order to increase transparency, streamlining of the agencies involved is necessary so that there are fewer actors and more cooperation between them. To be able to reach technology‐following SMEs, at least one transfer organization in every region should employ senior engineers with extensive business experience to visit firms frequently (proactive) to help them come up with some technological issues (demand‐oriented). These agencies need long‐term financial backing so as to provide free advice to technology‐following SMEs. 相似文献
79.
80.
Cet article est consacré à l'étude de quelques uns des aspects de la philosophie de l'histoire de Walter Benjamin qui, aujourd'hui, suscitent le plus d'intérêt. En pratique, il analyse la notion de progrès, le rôle joué par l'écoulement du temps et l'interruption messianique. Il insiste aussi sur la critique du marxisme vulgaire entreprise par W. Benjamin et met en évidence ses apports les plus personnels ; enfin, il attire l'attention sur le risque encouru par les historiens qui orientent leur travail vers le futur et se montrent aveugles en ce qui concerne le passé. 相似文献