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   23664篇
  免费   727篇
  国内免费   1篇
管理学   3212篇
民族学   135篇
人才学   1篇
人口学   2157篇
丛书文集   102篇
教育普及   2篇
理论方法论   2257篇
综合类   231篇
社会学   12051篇
统计学   4244篇
  2023年   146篇
  2022年   93篇
  2021年   159篇
  2020年   398篇
  2019年   589篇
  2018年   680篇
  2017年   911篇
  2016年   698篇
  2015年   480篇
  2014年   649篇
  2013年   4210篇
  2012年   863篇
  2011年   831篇
  2010年   598篇
  2009年   531篇
  2008年   660篇
  2007年   622篇
  2006年   660篇
  2005年   540篇
  2004年   545篇
  2003年   459篇
  2002年   489篇
  2001年   550篇
  2000年   496篇
  1999年   485篇
  1998年   374篇
  1997年   328篇
  1996年   361篇
  1995年   346篇
  1994年   301篇
  1993年   313篇
  1992年   353篇
  1991年   352篇
  1990年   337篇
  1989年   309篇
  1988年   278篇
  1987年   243篇
  1986年   284篇
  1985年   302篇
  1984年   270篇
  1983年   231篇
  1982年   191篇
  1981年   170篇
  1980年   191篇
  1979年   213篇
  1978年   173篇
  1977年   145篇
  1976年   124篇
  1975年   128篇
  1974年   120篇
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
161.
162.
This paper investigates the relationship of racial composition to neighborhood population change from 1910 to 1990 in the Cleveland metropolitan area. To better understand the long-term dynamics of urban neighborhood change, we focus our analysis upon the longitudinal relationship of race, socioeconomic status, and life cycle stage to changes in neighborhood population densities. First, we find that the more established neighborhoods of the African-American community have experienced dramatic declines in population since 1950, a pattern that represents a clear change from the earlier part of the twentieth century. Second, population loss is experienced through a variety of mechanisms, including the demolition of dwellings, the increase in housing vacancy, and the decline of household size. Third, much of this population loss should be interpreted within the context of high economic distress, occurring most frequently in older African-American communities. Over time, economic distress appears to be more important than race in and of itself in leading to the loss of neighborhood populations.  相似文献   
163.
Hydrocephalus and spina bifida are life-threatening conditions that often result in severe disabilities. Risks are much reduced by immediate surgery and careful management, but neither has been available for most of the sub-Saharan African population. This paper traces the growth of solutions and some socio-cultural resources that historically have supported family and community care for children with severe disabilities, mainly in Tanzania, and nearby Uganda, Kenya, Malawi, Zambia and Zimbabwe. Some community-based rehabilitation (CBR) work with children with spina bifida and hydrocephalus is described, and challenges to the CBR approach are noted from the increased survival of people with disabilities requiring complex care. More appropriate information, recognition of indigenous knowledge, enlistment of community resources and financial assistance are needed to enhance the lives of East Africans with hydrocephalus, spina bifida and other severely disabling conditions.  相似文献   
164.
This study challenges the prevailing view that marital companionship promotes marital satisfaction. By following a cohort of married couples for over a decade and by incorporating several methodological improvements—such as refining the measurement of marital satisfaction, determining how much spouses enjoy doing the leisure activities they pursue together and apart, and using diary data to portray marital leisure patterns—we found that the association between companionship and satisfaction is less robust than previously believed, and that it depends on how often spouses pursue activities that reflect their own and their partner's leisure preferences. Over time, involvement in leisure liked by husbands but disliked by wives, whether as a couple or by husbands alone, is both a cause and a consequence of wives' dissatisfaction.  相似文献   
165.
Unemployment rates differ widely and persistently across counties. This article examines equilibrium forces related to this geographic disparity with a focus on California. We show that although seasonal variation in employment can account for some of the differences, it cannot explain the total variation. Factors such as educational attainment, age, and gender appear to be strongly related to unemployment differences. Individuals living in higher‐unemployment areas also have a lower propensity to migrate. Because migration is usually considered to be the main equilibrating force, this evidence helps further explain why unemployment rates across counties are persistently different.  相似文献   
166.
Qualitative Sociology -  相似文献   
167.
To examine flexible work scheduling of married workers a conceptual framework was developed and tested using the 1997 Current Population Survey Work Schedules Supplement. Odds of flextime use were higher for married males, non-Hispanic whites, those with relatively higher levels of education and income, those with a preschool aged child, residents of the Midwest or West (as compared with the South), managers or professionals, and employees of the federal government.  相似文献   
168.
What do novice word learners know about the sound of words? Word‐learning tasks suggest that young infants (14 months old) confuse similar‐sounding words, whereas mispronunciation detection tasks suggest that slightly older infants (18–24 months old) correctly distinguish similar words. Here we explore whether the difficulty at 14 months stems from infants' novice status as word learners or whether it is inherent in the task demands of learning new words. Results from 3 experiments support a developmental explanation. In Experiment 1, infants of 20 months learned to pair 2 phonetically similar words to 2 different objects under precisely the same conditions that infants of 14 months (Experiment 2) failed. In Experiment 3, infants of 17 months showed intermediate, but still successful, performance in the task. Vocabulary size predicted word‐learning performance, but only in the younger, less experienced word learners. The implications of these results for theories of word learning and lexical representation are discussed.  相似文献   
169.
A general form for characterizing inverse Gaussian and Wald distributions, based on their respective length-biased distributions, is introduced. Further results for characterizations of the gamma distribution, the negative binomial distribution and some mixtures of them by using their lengthbiased distributions are establised.  相似文献   
170.
Betrayal by a significant object is seen as primary in causing behavioral and emotional disturbances in incest victims, leading to a pervasive identification with the aggressor and disturbances in object relations development. Identification with the aggressor is understood not as a uniform defense mobilized against a specific affect but as a complex compromise formation which defends against anxiety, while also providing libidinal, aggressive and superego gratifications. Far from simply attempting to overcome the past, identifications thus preserve affects that have become pleasurable and self-defining. Two case studies of adolescent girls illustrate how treatment can help victims recognize and begin to forego the sadomasochistic pleasure derived from these identifications, a relinquishment necessary for true mastery.  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