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   69932篇
  免费   3068篇
各国政治   4713篇
工人农民   2955篇
世界政治   6131篇
外交国际关系   3966篇
法律   32342篇
中国共产党   9篇
中国政治   751篇
政治理论   21182篇
综合类   951篇
  2023年   369篇
  2021年   428篇
  2020年   1202篇
  2019年   1573篇
  2018年   1741篇
  2017年   2036篇
  2016年   2265篇
  2015年   1901篇
  2014年   2164篇
  2013年   11036篇
  2012年   1698篇
  2011年   1782篇
  2010年   1881篇
  2009年   2124篇
  2008年   1797篇
  2007年   1790篇
  2006年   1900篇
  2005年   1801篇
  2004年   1698篇
  2003年   1500篇
  2002年   1529篇
  2001年   1522篇
  2000年   1326篇
  1999年   1229篇
  1998年   1103篇
  1997年   981篇
  1996年   964篇
  1995年   916篇
  1994年   920篇
  1993年   931篇
  1992年   933篇
  1991年   985篇
  1990年   944篇
  1989年   970篇
  1988年   971篇
  1987年   994篇
  1986年   951篇
  1985年   1026篇
  1984年   919篇
  1983年   949篇
  1982年   892篇
  1981年   839篇
  1980年   653篇
  1979年   701篇
  1978年   605篇
  1977年   526篇
  1976年   481篇
  1975年   419篇
  1974年   436篇
  1973年   436篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
This report reviews technology transfer in light of the Stevenson-Wydler Technology Innovation Act of 1980. Following a brief introduction, a section on “Definitions” explains the several meanings that the phrase “technology transfer” now carries in policy discussions. The next section, on “Passive Technology Transfer”, reviews traditional Department of Defense scientific and technical information programs that relate to technology transfer. A section on “Military Industrial Transfer” examines technology transfer from the Defense Department to private industry, expecially to defense contractors. A section on “The Stevenson-Wydler Act and Active Technology Transfer” describes the principal provisions of the new act and why Congress passed it. The next two sections, on “NASA’s Technology Transfer Program” and “The Federal Laboratory Consortium” outline the two existing Government programs Congress relied upon in developing ideas for the new law. A section on “Implementation of the Stevenson-Wydler Act”, discusses several important issues that must be considered by Navy laboratory management as the new law is put into effect in the Navy. Finally, a brief conclusion emphasizes the major point of the report: That Congress, in passing the Stevenson-Wydler Act, did not fully consider what relationship the new technology transfer programs it was requiring in the Executive Branch should bear to existing programs with similar purposes. If the public interest is to be served, the report argues, the Navy must consciously and carefully determine the proper nature of this relationship.  相似文献   
982.
Technology transfer is the process by which technology originating at one institutional setting is adapted for use in another. A major impediment to the implementation of new technologies to assist with mangerial decision-making problems is a lack of communication between the technology and management communities. Development of a tool designed to bridge the technology transfer gap was the goal of this research. The result is a prototype software package which may be used on an interactive computer terminal by a manager for assistance in designing a decision support system (DSS). The four primary research tasks were:
  1. Develop a conceptual model of the DSS design process.
  2. Select and adapt, or create, appropriate software to mechanize the model.
  3. Develop a knowledge base to describe the interactiveness of various organization variables and managerial decision-making needs.
  4. Collect and analyze interview data and implement resultant production rules on the model.
Tasks 1 and 2 were accomplished first to establish the feasibility of this effort. An interview instrument was developed for Task 3. And, corporate managers from several firms were interviewed to accomplish Task 4. Using this data, a prototype production rule model (called DECAIDS for DECISION AIDS) was constructed which supports managerial decision-making from the EMYCIN production rule system used at Stanford University. The purpose of this article is to introduce the need for a Decision Support System Model. A complete copy of this research can be obtained through University Microfilms International, 300 N. Zeeb Road, Ann Arbor, Michigan 48106, from the Naval Postgraduate School, Monterey, California 93940, or the Defense Technical Information Center, Cameron Station, Alexandria, Virginia 22314. The title is “An Interactive Decision Support System for Technology Transfer Pertaining to Organization and Management”, 1980.  相似文献   
983.
The welfare state concept hides an important aspect of modern industrial societies. In capitalist countries welfare is provided through a mixture of public and private initiatives. The author suggests that the concept welfare economy more fully captures the economic interpenetration of public and private sectors. The growth of fringe benefits illustrates the extent to which private enterprise performs the welfare function.Government increasingly intervenes through processes of mandating, stimulating, regulating, and supporting, using private enterprise as the vehicle for delivery of welfare services. Government's traditionally conceived role as welfare service provider is also changed through recognition that it is both an employer and purchaser, significantly impacting society's original income distribution.An earlier version of this essay was presented as a lecture at the University of Melbourne and published in Ronald F. Henderson, The Welfare Stakes: Strategies for Australian Social Policy, Melbourne: Institute of Applied Economics and Social Research, 1981.  相似文献   
984.
985.
Child mortality was analyzed in relation to 3 dimensions of reproductive behavior: birth intervals, additional children desired, and contraceptive use. Study data were drawn from a 1978 survey conducted in 2 predominantly rural governorates, Beheira and Kafr El-Sheikh, in lower Egypt. Within each governorate, 2 districts were selected on the basis of their distance from the capital of the governorate, agricultural output by major crops, percent of the population urban, infant mortality rate, and crude birthrate. Within each of the 4 districts, villages were randomly drawn from 3 strata: villages lacking any governmental services; villages with limited services (health center or primary school); and villages served by a combined unit center providing integrated services. A random sample of household heads was selected from household registration records of the provision office of each district. 1200 interviews were obtained from 685 households. Restriction of the sample to women with 1 or more live births, and the elimination of 13 cases with incomplete or inaccurate information, yielded 1010 cases for analysis. The basic measure of actual fertility was birth intervals. For the total sample and within each age category, cumulative fertility is higher the greater the number of child deaths. The data demonstrate a strong relationship between child mortality experience and cumulative fertility. The problem lies in interpreting such results. With some exceptions, birth intervals increased as expected with increasing parity. Women without child death experience displayed longer birth intervals than women who had not lost a child. With the single exception of the 7th parity women, all differences were statistically significant. The data fail to eliminate potential biological influences on subsequent fertility. With biological influences adequately controlled, no behavioral differences remained. Women who experienced child mortality desired greater numbers of additional children than women without child death experience. 19% of respondents were ever users of contraception, with women of low parity the least likely ever to have used contraception.  相似文献   
986.
This article uses a comparative case study approach to relate policy outcomes in terms of family planning to the patterns of political forces observed in the 3 Maghrib states of Algeria, Morocco, and Tunisia. It is suggested that official support for a strong family planning program may be linked to recognition of the problem of low labor absorption and to concrete steps taken to counter the problem. The article discusses different vantage points for approaching the political context of family planning and distinguishes between the use of family planning as an instrument of social policy and as an instrument of economic policy. Ideological reasons for opposition to or support of family planning are then outlined. The colonial experience of the 3 states is differentiated and a chronological account of their family planning programs is provided. The political systems and leadership of the 3 countries are separately discussed in greater detail, after which the influence of elite groups on family planning programs and activities in each country is assessed. Developments in the 3 countries since 1978 are then sketched. The author concludes that the relative importance of policies toward employment and women's status in connection with support for family planning has probably varied over time, with economics playing a greater role in the 1970s. The activities of non-regime political actors were found to be very significant in formulation of population policies in Algeria and Morocco but less so in Tunisia.  相似文献   
987.
988.
989.
990.
The Hon. Editor has received the following letter commenting on Professor Kirk's and Mr. Sloyan's article on the New Covent Garden Market (Vol. 56 Spring 1978). The author is lecturer in applied economics in the Department of Social and Economic Research, University of Glasgow. Mr. Heald's letter is followed by a reply by Professor Kirk on behalf of Mr. Sloyan and himself.  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