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   13191篇
  免费   404篇
  国内免费   15篇
管理学   1615篇
民族学   81篇
人才学   1篇
人口学   1150篇
丛书文集   143篇
理论方法论   1238篇
综合类   690篇
社会学   7032篇
统计学   1660篇
  2023年   70篇
  2021年   107篇
  2020年   209篇
  2019年   256篇
  2018年   337篇
  2017年   485篇
  2016年   330篇
  2015年   267篇
  2014年   318篇
  2013年   2064篇
  2012年   483篇
  2011年   467篇
  2010年   397篇
  2009年   328篇
  2008年   403篇
  2007年   416篇
  2006年   420篇
  2005年   364篇
  2004年   287篇
  2003年   253篇
  2002年   267篇
  2001年   340篇
  2000年   285篇
  1999年   279篇
  1998年   201篇
  1997年   169篇
  1996年   159篇
  1995年   174篇
  1994年   158篇
  1993年   162篇
  1992年   185篇
  1991年   186篇
  1990年   184篇
  1989年   159篇
  1988年   167篇
  1987年   191篇
  1986年   147篇
  1985年   161篇
  1984年   178篇
  1983年   152篇
  1982年   152篇
  1981年   121篇
  1980年   112篇
  1979年   123篇
  1978年   96篇
  1977年   80篇
  1976年   93篇
  1975年   109篇
  1974年   86篇
  1972年   62篇
排序方式: 共有10000条查询结果,搜索用时 953 毫秒
241.
242.
This paper extends the analysis of the demand for medical care to an aspect which has previously been ignored: variations in expected, as opposed to experienced, cause of losses of health and the current use of medical care. Losses of health which cannot be prevented by the prior use of medical care are hypothesized to decrease the use of medical care by reducing the rate of return to investments in health, ceteris paribus. The reduction in the rate of return occurs both because these losses curtail the length of the stream of benefits to the use of medical care and because prior use of medical care is not effective in reducing the occurrence of these types of loss. Empirical findings support this hypothesis. Results suggest that differences in expected losses may account for some of the differences in utilization of medical care by sex.  相似文献   
243.
Sex differences in three communication behaviors consistently found to be more common among females than males — smiling, gazing at one's partner, and sentence complexity — were examined through analysis of interviews with 78 institutionalized mentally retarded adults. While females were significantly more likely than males to smile or laugh, and tended to use longer, more complex sentences, the commonly observed sex difference in gazing failed to generalize to a retarded sample. These findings clarify limits on the generalizability of sex differences beyond college students and other normal populations.This research was partially supported by a grant to the Texas Tech University Research and Training Center in Mental Retardation from the Rehabilitation Services Administration, Department of Health Education, and Welfare.  相似文献   
244.
245.
246.
Illustrating a patient's use of the transference as a play-ground... an intermediate region between illness and real life through which the transition from one to the other is made (Freud, 1914), the author presents the case of a man in his late fifties attempting to transcend former male role stereotypes. Using the therapist as a transitional object, this patient experimented, both in therapy and in his social activities, with various patterns in relationships with women, becoming increasingly aware of his dominating benevolence and his concommitant denial of dependency needs. Several new ways for viewing both masochistic and acting-out behaviors are proposed, ways that lead to therapeutic responses tending to convert both to reparative regressions.  相似文献   
247.
Sex education should be an integrated component of population education programs in the Philippines. There are, however, a variety of objections to this approach, which are linked to proposals that sex education is more relevant to biology and medicine curriculums. The Population Education Program of the Philippines conducted a study of 2093 parents and 4550 teachers to determine who registered objections to teaching certain population education content, what they objected to, and why such objections were raised. Findings show that only 3% of the sample reacted unfavorably to the inclusion of controversial topics, such as sex terms, illustrations of sex organs and the naming of contraceptive devices. The issues remaining to be solved are: content, terminology, teacher competence, parents' involvement, and teaching aids.  相似文献   
248.
249.
Summary In Matlab Bazaar Thana the Cholera Research Laboratory has registered the births, deaths and migrations in a population of approximately 125,000 since 1966. Although this rural area was not the scene of any significant armed encounters, striking changes in birth and death rates were registered during and after the conflict. Birth rates did not change during the relatively brief period of the civil war, but a small decline was registered for one year after the war. Fertility rates which had been declining slightly and irregularly in the pre-war baseline period may have increased slightly during the war and fell substantially in all age groups in the year following the war. The crude death rate, which rose by 37 per cent during the war, was a very sensitive reflection of the administrative and economic problems. Overall infant mortality rose by only 15 per cent over pre-war levels because all of the increase was observed in the post-neo-natal component, which traditionally accounts for less than one-third of the total infant mortality in Bangladesh. Children and older adults accounted for the majority of excess deaths which were largely attributed to acute diarrhoeas and other gastro-intestinal causes. The death rate at ages 1-4 rose by 43 per cent and at ages 5-9 soared to 208 per cent above pre-war baseline rates. All increases in age-specific mortality rates fell to baseline levels during the year following the war, except the 5-9-year age group, in which rates continued to be high largely because of deaths due to dysentery.  相似文献   
250.
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