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   8451篇
  免费   133篇
  国内免费   3篇
管理学   1281篇
民族学   27篇
人口学   785篇
丛书文集   23篇
理论方法论   704篇
综合类   117篇
社会学   4133篇
统计学   1517篇
  2020年   96篇
  2019年   132篇
  2018年   157篇
  2017年   199篇
  2016年   171篇
  2015年   117篇
  2014年   172篇
  2013年   1434篇
  2012年   206篇
  2011年   216篇
  2010年   171篇
  2009年   162篇
  2008年   200篇
  2007年   202篇
  2006年   202篇
  2005年   189篇
  2004年   163篇
  2003年   137篇
  2002年   155篇
  2001年   165篇
  2000年   186篇
  1999年   146篇
  1998年   147篇
  1997年   127篇
  1996年   133篇
  1995年   135篇
  1994年   148篇
  1993年   136篇
  1992年   152篇
  1991年   160篇
  1990年   178篇
  1989年   153篇
  1988年   171篇
  1987年   145篇
  1986年   144篇
  1985年   137篇
  1984年   156篇
  1983年   144篇
  1982年   112篇
  1981年   92篇
  1980年   103篇
  1979年   118篇
  1978年   95篇
  1977年   74篇
  1976年   87篇
  1975年   53篇
  1974年   75篇
  1973年   56篇
  1971年   45篇
  1970年   46篇
排序方式: 共有8587条查询结果,搜索用时 41 毫秒
81.
The occupational distributions of the native-born and foreign-born in the Australian labor market differ greatly. The disparity between the occupational distributions is greatest among the middle age-bracket, and among immigrants from Eastern Europe and the Mediterranean region. Analysis of occupational attainment using unit record data from the 1981 Census shows that as duration of residence in Australia lengthens, the occupational distribution of the overseas-born converges toward that of the Australian-born. Moreover, birthplace groups differ in the degree of upward mobility associated with length of residence in Australia: immigrants from non-English-speaking countries tend to make greater occupational advances than their counterpart from English-speaking countries. This suggests a higher degree of international transferability of human capital skills among immigrants from English-speaking countries. The analysis also highlights the concentration of immigrants from non-English speaking countries in low-ranked occupations, and the relatively minor influence of education on the occupational attainment of immigrants from these birth place regions.  相似文献   
82.
A survey of corporate Planning in Britain suggests that the way the process is organized varies with the need of the firm. There appear to be two types of needs which foster the development of the planning activity—strategy development and co-ordination. In capital intensive companies, threatened by technological or market change, there is a need for reappraisal of the firm's overall strategy. On the other hand, in a large diversified firm the requirement may be to co-ordinate the plans of different divisions and departments, particularly investment proposals. This article suggests a framework for the analysis of these planning needs.  相似文献   
83.
Nonprofit organizations should consider using incentive-based management programs so long as such programs are studied thoughtfully, implemented carefully, and closely tied to other important management practices. The article describes the experiences of one nonprofit organization, Citizens' Scholarship Foundation of America (CSFA), in successfully conducting a staff incentive program during the past several years. The author also reports briefly on the results of a recent survey among CSFA staff involved in the incentive plan, outlining the benefits of such a program in helping the organization to reach its objectives. Finally, the author addresses potential pitfalls to avoid in implementing an effective staff incentive program.  相似文献   
84.
85.
Technologies with significant implications for expenditures continue to reach the health care system. These technologies range from orphan drugs/biologicals used to treat rare diseases to balloons used to treat the common occurrence of benign prostatic hyperplasia (BPH) in aging men. Because payment for these technologies can represent a serious financial drain on third-party payers, utilization has to be carefully evaluated, monitored, and controlled.  相似文献   
86.
The term "investigational" has become the fulcrum upon which coverage decisions turn. All third-party payers, including the federal government, use varying definitions of the term for the purpose of excluding treatments from coverage for payment. Unfortunately, no consistent definition of the term is available to payers to guide them in their coverage decisions.  相似文献   
87.
Coverage decisions by third-party payers are relying more and more heavily on the conclusions of technology assessment programs about the safety and effectiveness of technologies applied in specific clinical situations. Assessment programs vary markedly in the sophistication and rigor of their methodology. Payers differ as to how such assessment information is integrated into their decision-making processes. Finally, coverage decisions about a specific technology can vary widely across the country.  相似文献   
88.
The challenge of world health   总被引:1,自引:0,他引:1  
2 development specialists have expounded on the demands world health has placed on public health. Striking declines in infant and child mortality occurred with the advent of biomedical and technical interventions in developing countries after World War II. At the same time, these interventions promoted longer lives by curing and/or treating chronic diseases in developed countries. In the 1970s, however, it was apparent that the hospital based, curative approach could not meet health needs and was very costly. In developed countries, biomedical and social sciences showed that chronic diseases did not occur due to modernization but from unhealthy behaviors, diet, and lifestyle. In fact, in 1975, the US Centers for Disease Control announced that unhealthy lifestyles contributed to 50% of all deaths while the medical system was responsible for only 11%. The US and other developed countries then began to promote healthy lifestyles, and in the 1980s, considerable improvements in health occurred, especially among adults. Developing countries which depended on the Western medical model did not experience health gains in the 1970s. Yet developing countries where health systems concentrated on carrying essential services to all people and promoted basic hygiene and sound dietary practices continued to achieve considerable health gains. In 1978, WHO an UNICEF hosted the International Conference on Primary Health Care in Alma Ata, the Soviet Union to hold these developing countries with community based health systems as models of primary health care (PHC). The 1980s witnessed the spread of PHC especially in the form of child survival which focused on oral rehydration therapy and breast feeding. The biomedical and social sciences are needed to move this health policy and program strategy forward. Governments must see to policies that promote healthy people. Political will is needed to make human welfare a high priority.  相似文献   
89.
90.
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