全文获取类型
收费全文 | 66448篇 |
免费 | 3270篇 |
专业分类
各国政治 | 4431篇 |
工人农民 | 2828篇 |
世界政治 | 5863篇 |
外交国际关系 | 3775篇 |
法律 | 30673篇 |
中国共产党 | 9篇 |
中国政治 | 744篇 |
政治理论 | 20456篇 |
综合类 | 939篇 |
出版年
2021年 | 400篇 |
2020年 | 1150篇 |
2019年 | 1508篇 |
2018年 | 1645篇 |
2017年 | 1924篇 |
2016年 | 2125篇 |
2015年 | 1815篇 |
2014年 | 2084篇 |
2013年 | 10447篇 |
2012年 | 1543篇 |
2011年 | 1650篇 |
2010年 | 1793篇 |
2009年 | 2037篇 |
2008年 | 1690篇 |
2007年 | 1650篇 |
2006年 | 1831篇 |
2005年 | 1719篇 |
2004年 | 1613篇 |
2003年 | 1420篇 |
2002年 | 1469篇 |
2001年 | 1410篇 |
2000年 | 1213篇 |
1999年 | 1111篇 |
1998年 | 1063篇 |
1997年 | 951篇 |
1996年 | 929篇 |
1995年 | 898篇 |
1994年 | 892篇 |
1993年 | 925篇 |
1992年 | 907篇 |
1991年 | 940篇 |
1990年 | 886篇 |
1989年 | 933篇 |
1988年 | 931篇 |
1987年 | 962篇 |
1986年 | 921篇 |
1985年 | 1016篇 |
1984年 | 904篇 |
1983年 | 966篇 |
1982年 | 882篇 |
1981年 | 838篇 |
1980年 | 652篇 |
1979年 | 675篇 |
1978年 | 592篇 |
1977年 | 524篇 |
1976年 | 487篇 |
1975年 | 406篇 |
1974年 | 411篇 |
1973年 | 423篇 |
1972年 | 367篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
973.
An employer's capacity successfully to survive a strike will depend largely on the extent to which it has anticipated the strike and taken the steps necessary to defend against it. It is the purpose of this article to catalog the factors employers should consider in approaching an imminent strike and devising contingency plans. It attempts to focus on the types of problems, legal and practical, that frequently arise in strike situations, and suggests certain measures that employers may adopt in preparing for, and defending against, the economic impact of a strike. 相似文献
974.
Mnemic disturbances occurred in 8 of 14 subjects during a pharmcopsychological investigation of possible interactions between alcohol and dipotassium chlorazepate (Tranxilium). The blood alcohol concentrations were between 0.87% and 1.32%; the serum concentrations of the active metabolite nordiazepam were in the therapeutic range between 145 ng/ml and 345 ng/ml. The constitutional, dispositional, and situative conditions are presented. The forensic medical interpretation of such mnemic disturbances must be made critically and with reservation when evaluating a psychopathological state. 相似文献
975.
Most efforts in transferring technology to a specific location are carried out following essentially a research approach. However, imposing the research approach onto a situation for which a specific solution needs to be created or restructured represents an inappropriate transfer of technology. A planning and design approach (PDA) is called for. “TOTALS” is based on planning and design concepts adapted to solving the problems of technology transfer. It is composed of six time-based and repeating phases, comprised of nineteen steps. It is based on four important concepts: a systems view of technology, a Technology Transfer Equation, five different purposeful perspectives regarding technology transfer activities, and a holistic PDA. No particular approach, technique, model or body of knowledge can be said to be predominant. 相似文献
976.
Changes in the wording of core measures of political attitudes in the American National Election Studies have generated a good deal of controversy about artifactual sources of change in the U.S. electorate. This research, based on several field experiments and replications, investigates the effects of using or not using various types of opinion filter questions that have appeared in the SRC/CPS series over the years. The analysis shows that the use of a filter interacts significantly with a respondent's level of education and interest in politics, particularly the latter, in determining whether a respondent will offer an opinion on a given public policy issue. But the study also demonstrates that such an interaction occurs primarily when the question about interest in politics is askedafter, rather thanbefore, a set of political issue items. In interpreting these order-and-context effects the authors develop a self-perception model of how respondents infer their interest in politics from information that isavailable in memory about their own behavior in the survey interview. 相似文献
977.
John A. C. Conybeare 《Policy Sciences》1980,12(1):27-39
A basic tenet of the new conservatism in political economy is that government policies frequently lead to unintended consequences which may offset the benefits of the policy. Auto safety legislation may be a case in point. As the first country to make the wearing of seat belts compulsory, Australia is highly suitable as a case study. Traffic accident casualties were regressed on six independent variables for the pre-seat belt period 1949–71. The equations were then used to predict casualties for the period 1972–77, using the actual values of the independent variables. In the aggregate, predicted occupant casualties were higher than the actual rates, whereas non-occupant casualties were underpredicted by the equations. An additional test, using a dummy variable to predict the effect of seat belts, supported these conclusions. The results are consistent with the hypothesis that drivers respond to a reduction in risk by increasing driving intensity, shifting some of the welfare cost of auto safety legislation on to non-occupants, whose casualty rates are higher than they would have been in the absence of seat belt legislation.I am grateful to Chris Adam and to an anonymous reviewer for helpful comments and suggestions. 相似文献
978.
979.
A number of reports have been published over the past few years documenting the evidence of decline in the northeastern U.S.A. and the simultaneous migration of industry to the U.S. Sunbelt. (Academy for Contemporary Problems, 1977; Sale, 1975; Sternlieb and Hughes, 1975). In developing appropriate recommendations to planners, such studies invariably urge that localities or regions facing industrial out-migration arrest this activity by making themselves more suitable and attractive (Council for Northeast Economic Action [CNEA], 1977a) within the framework of a number of characteristic strategies. We propose to examine critically some of the traditional strategies recommended by these reports. 相似文献
980.