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   11388篇
  免费   294篇
管理学   1417篇
民族学   48篇
人口学   929篇
丛书文集   62篇
教育普及   3篇
理论方法论   1005篇
综合类   117篇
社会学   6113篇
统计学   1988篇
  2023年   56篇
  2021年   61篇
  2020年   138篇
  2019年   210篇
  2018年   234篇
  2017年   335篇
  2016年   238篇
  2015年   185篇
  2014年   253篇
  2013年   2326篇
  2012年   301篇
  2011年   303篇
  2010年   222篇
  2009年   203篇
  2008年   226篇
  2007年   224篇
  2006年   246篇
  2005年   222篇
  2004年   185篇
  2003年   165篇
  2002年   186篇
  2001年   272篇
  2000年   257篇
  1999年   271篇
  1998年   170篇
  1997年   153篇
  1996年   210篇
  1995年   208篇
  1994年   216篇
  1993年   221篇
  1992年   232篇
  1991年   217篇
  1990年   240篇
  1989年   211篇
  1988年   199篇
  1987年   176篇
  1986年   164篇
  1985年   172篇
  1984年   176篇
  1983年   124篇
  1982年   123篇
  1981年   103篇
  1980年   115篇
  1979年   113篇
  1978年   96篇
  1977年   85篇
  1976年   82篇
  1975年   85篇
  1974年   57篇
  1973年   54篇
排序方式: 共有10000条查询结果,搜索用时 349 毫秒
931.
Terminations or interruptions of psychotherapy which have been followed by a patient's resuming therapy with the same therapist at a later time have often been viewed as premature with the implication that the initial therapy has been inadequate or deficient. This paper suggests, however, that a patient returns to the same therapist because the selfobject bond established in the initial treatment is still intact, and that the hiatus between treatments can be a time of further development and strengthening of self structure. Two clinical cases are described which illustrate these ideas.  相似文献   
932.
Public employee union membership has grown from under 6 percent to over 20 percent of all union members since 1963. This growth has been ascribed to lagging wages, inelastic demands for public products, political clout, changed laws, and reduced professionalism and public spiritedness. These explanations agree that public employees now confront their employers in a newly militant and adversarial mode. We disagree. We model this growth in membership as a continuation of old public employment relations and forecast the soon diminution of militancy.  相似文献   
933.
This study indicated that there is considerable interest in formal strategic long range corporate planning among large U.S. banks. Officers in a total of 97 large U.S. banks provided information on their bank's efforts in the area of long range planning for this study. The data indicated that the percentage of large U.S. banks with fully developed and operational long range planning systems is rapidly increasing. Information on the organization for long range bank planning and the administrative procedures being utilized are presented and discussed. In addition, information on problems that the bankers are experiencing in implementing and operating their long range planning systems are presented.  相似文献   
934.
935.
936.
937.
938.
Campylobacteriosis is an important food-borne illness with more than a million U.S. cases annually. Antibiotic treatment is usually not required. However, erythromycin, a macrolide antibiotic, is recommended for the treatment of severe cases. Therefore, it is considered a critically important antibiotic and given special attention as to the risk that food animal use will lead to resistant infections and compromised human treatment. To assess this risk, we used a retrospective approach; estimating the number of campylobacteriosis cases caused by specific meat consumption utilizing the preventable fraction. We then determined the number of cases with macrolide resistance Campylobacter spp. based on a linear model relating the resistance fraction to on-farm macrolide use. In this article, we considered the uncertainties in the parameter estimates, utilized a more elaborate model of resistance development and separated C. coli and C. jejuni . There are no published data for the probability of compromised treatment outcome due to macrolide resistance. Therefore, our estimates of compromised treatment outcome were based on data for fluoroquinolone-resistant infections. The conservative results show the human health risks are extremely low. For example, the predicted risk of suboptimal human treatment of infection with C. coli from swine is only 1 in 82 million; with a 95% chance it could be as high as 1 in 49 million. Risks from C. jejuni in poultry or beef are even less. Reduced antibiotic use can adversely impact animal health. These low human risks should be weighed against the alternative risks.  相似文献   
939.
940.
The legalization of gambling, including state lotteries, has resulted in a dramatic increase of compulsive gambling. Not surprisingly, a new profile of compulsive gambler has emerged which differs significantly from the previous profile of white, middle aged, middle class male. This paper discusses public policy issues, lottery advertising, and legislative/lottery support given to address the problems of compulsive gambling.  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