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   9628篇
  免费   167篇
  国内免费   1篇
管理学   1439篇
民族学   44篇
人口学   850篇
丛书文集   33篇
理论方法论   792篇
综合类   145篇
社会学   4329篇
统计学   2164篇
  2023年   71篇
  2020年   140篇
  2019年   227篇
  2018年   259篇
  2017年   361篇
  2016年   270篇
  2015年   215篇
  2014年   250篇
  2013年   1737篇
  2012年   316篇
  2011年   248篇
  2010年   252篇
  2009年   220篇
  2008年   269篇
  2007年   275篇
  2006年   247篇
  2005年   196篇
  2004年   170篇
  2003年   160篇
  2002年   183篇
  2001年   227篇
  2000年   194篇
  1999年   161篇
  1998年   132篇
  1997年   134篇
  1996年   133篇
  1995年   113篇
  1994年   87篇
  1993年   130篇
  1992年   147篇
  1991年   127篇
  1990年   131篇
  1989年   110篇
  1988年   112篇
  1987年   113篇
  1986年   101篇
  1985年   86篇
  1984年   117篇
  1983年   101篇
  1982年   96篇
  1981年   64篇
  1980年   98篇
  1979年   108篇
  1978年   74篇
  1977年   83篇
  1976年   71篇
  1975年   87篇
  1974年   70篇
  1973年   54篇
  1972年   64篇
排序方式: 共有9796条查询结果,搜索用时 15 毫秒
851.
852.
853.
854.
A consumer satisfaction scale was developed for psychiatric inpatients. The scale was administered to a state-wide sample of (n = 366) patients discharged from acute psychiatric units throughout Missouri. The scale was factor analyzed and given to another sample of (n = 390) discharges. Three out of five factors that were found in the first sample were replicated in a factor analysis of data from the second sample. Acceptable coefficient alphas were obtained on all three factors, demonstrating internal reliability. The three factors were labeled Treatment Effectiveness, Trust of Staff, and Hospital Environment. Comparable levels of satisfaction with prior studies were found on the first general satisfaction factor of Treatment Effectiveness. Subjects discriminated areas of satisfaction by expressing higher levels of dissatisfaction on the factors of Trust of Staff and Hospital Environment.  相似文献   
855.
856.
A system of classifying, managing, and tracking abnormal Papanicolaou (Pap) smears was used at a California university where 3,289 patients were tested. Classification was based on use of the latest cytopathological techniques for identifying characteristics associated with dysplasia and human papilloma virus (HPV). The follow-up success rate was determined for 6-month repeat Pap smears, colposcopy patient contact, and biopsy results. Pathology report correlations were determined for the noncolposcopy group by using repeat Pap smear results. Biopsy results were correlated with Pap smear readings for accuracy and yielded significant statistical information for the program.  相似文献   
857.
As human populations increase, ecological and social issues become inextricably linked to a greater degree. Solutions to complex social–ecological problems can only be derived through the use of integrated research that can account for the interplay of many factors across traditional discipline lines. We are using such an integrated research to clarify relationships among socioeconomic drivers, ecological effects, and social and policy feedbacks associated with urban development of forested landscapes. Our approach is goal oriented and interdisciplinary in nature and involves a team composed of ecologists, anthropologists, and economists who exchange ideas and information across disciplinary lines. The team and approach has evolved through many of the barriers to interdisciplinary research that have been identified by other authors. Our goal is to develop a predictive capability in order to anticipate ecological and social implications of urban development on natural resources in the southeastern United States. Our integrated model and subsequent papers in this special issue are presented.  相似文献   
858.
A general framework for studying the transitivity of reciprocal relations is presented. The key feature is the cyclic evaluation of transitivity: triangles (i.e. any three points) are visited in a cyclic manner. An upper bound function acting upon the ordered weights encountered provides an upper bound for the ‘sum minus 1’ of these weights. Commutative quasi-copulas allow to translate a general definition of fuzzy transitivity (when applied to reciprocal relations) elegantly into the framework of cycle-transitivity. Similarly, a general notion of stochastic transitivity corresponds to a particular class of upper bound functions. Ample attention is given to self-dual upper bound functions.  相似文献   
859.
860.
Summary.  The paper analyses a time series of infant mortality rates in the north of England from 1921 to the early 1970s at a spatial scale that is more disaggregated than in previous studies of infant mortality trends in this period. The paper describes regression methods to obtain mortality gradients over socioeconomic indicators from the censuses of 1931, 1951, 1961 and 1971 and to assess whether there is any evidence for widening spatial inequalities in infant mortality outcomes against a background of an overall reduction in the infant mortality rate. Changes in the degree of inequality are also formally assessed by inequality measures such as the Gini and Theil indices, for which sampling densities are obtained and significant changes assessed. The analysis concerns a relatively infrequent outcome (especially towards the end of the period that is considered) and a high proportion of districts with small populations, so necessitating the use of appropriate methods for deriving indices of inequality and for regression modelling.  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