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   20593篇
  免费   579篇
  国内免费   1篇
管理学   2535篇
民族学   109篇
人才学   6篇
人口学   1922篇
丛书文集   122篇
教育普及   2篇
理论方法论   1940篇
现状及发展   1篇
综合类   265篇
社会学   10057篇
统计学   4214篇
  2023年   103篇
  2022年   85篇
  2021年   108篇
  2020年   324篇
  2019年   508篇
  2018年   534篇
  2017年   727篇
  2016年   503篇
  2015年   408篇
  2014年   502篇
  2013年   3588篇
  2012年   735篇
  2011年   645篇
  2010年   514篇
  2009年   481篇
  2008年   550篇
  2007年   553篇
  2006年   510篇
  2005年   458篇
  2004年   447篇
  2003年   404篇
  2002年   422篇
  2001年   511篇
  2000年   429篇
  1999年   411篇
  1998年   338篇
  1997年   307篇
  1996年   312篇
  1995年   298篇
  1994年   290篇
  1993年   277篇
  1992年   328篇
  1991年   323篇
  1990年   288篇
  1989年   284篇
  1988年   282篇
  1987年   241篇
  1986年   238篇
  1985年   277篇
  1984年   259篇
  1983年   266篇
  1982年   200篇
  1981年   173篇
  1980年   188篇
  1979年   189篇
  1978年   176篇
  1977年   157篇
  1976年   145篇
  1975年   135篇
  1974年   109篇
排序方式: 共有10000条查询结果,搜索用时 821 毫秒
101.
In this paper, the history of atmospheric science is traced, from the earliest discussions from meteorologists, and the first meetings to describe this new research area. The development of atmospheric science proceeded in three phases with each phase being marked by the attempt to organize resources, and bring into the atmospheric science network, scientists from other fields. I argue here that this construction of a science provides evidence of the social nature of science as well as the importance of organizations to the creation of a science.  相似文献   
102.
The purpose of this paper is to consider the relation between commuting and the settlement structure, with particular attention to rural and nonmetropolitan areas. I examined commuting flows between metropolitan central cities, other metropolitan areas, nonmetropolitan places with more than 10,000 people, those with 2500–10000 people, and other rural areas. Despite the deconcentration of population, industry and trade that was especially marked in the 1970s, commuting in 1980 was predominantly toward larger places in the ruralurban hierarchy, and particularly from rural areas and the other metropolitan category to cities. Overall levels of commuting were high, and most were within either nonmetropolitan or metropolitan areas. Smaller nonmetropolitan places particularly had high proportions of both in- and out-commuters. Differences in commuting flows by gender, socioeconomic status and industry were small, but generally in the directions expected on the basis of prior research. The findings reveal a high degree of work-residence interdependence among settlement units in nonmetropolitan America, with social and economic differences in commuting flows representing an important aspect of community structure.  相似文献   
103.
哈萨克斯坦共和国的现代教育体制是国家经济的重要组成部分 ,是国家内外安全的保证。国家安全的方方面面 :经济和军事、生态和技术、文化和管理——都对教育体系有影响。教育体制质量上的转变对国家的主权、政治及经济上真正的独立都发挥着重要的作用。本文分析了哈萨克教育体制中基本因素的动态变化情况  相似文献   
104.
105.
This study concerned the immunological correlates of stress and work. Self reported stress, emotional state, ego-strength, and defensiveness were examined in relation to measures of cellular immunity (T-cell response to Con A and number of T4 and T8 cells) and humoral immunity (concentrations of immunoglobulins and complement components in plasma) in a group of 96 Norwegian female bank employees. The analyses showed that workload, the stress factor with the highest group mean, was associated with number of T-cells, while strain due to body posture during work was related to concentrations of IgM and C3. Further, depression was significantly correlated with IgM concentration and T-cell number, and anxiety with C3 concentration. T-cell activity was the immunological parameter most consistently associated with psychological well-being, showing positive correlations with defensiveness and ego-strength and negative correlations with anxiety and depression. In conclusion, T-cell number and concentrations of IgM and C3 were sensitive to both work-related stress experience and emotional distress. Coping abilities, indicated by the MMPI Ego-strength scale and emotional distress, were reflected in T-cell activity; insufficient coping was associated with low T-cell activity.  相似文献   
106.
107.
108.
Abstract Routes to economic development attract considerable attention in community and rural sociology. Social scientists draw increasingly on studies of social capital and environmental surroundings as they examine the factors that facilitate and inhibit economic development. However, few empirical analyses exist that analyze the impact of the combination of social infrastructure and natural capital on different forms of economic development such as on industrial recruitment and self‐development. Using data collected from six communities in Washington State, the interaction of a community's social infrastructure and natural capital on industrial recruitment and self‐development efforts is examined. Results suggest that while natural capital positively impacts a community's successful recruitment of outside industries, it is not significant for a community's level of self‐development. However, a community's social infrastructure, measured by the existence of active civic organizations, local businesses that support local community projects, community‐wide fund‐raising capacity, and extra‐local linkages to nearby communities, state, and national agencies, positively affects both industrial recruitment and self‐development. These findings illustrate the need for communities and local activists to carefully weigh their advantages and potential shortcomings when deciding on an economic development strategy.  相似文献   
109.
110.
Abstract Accounts of poverty generally fall into either “individualist” or “structuralist” camps. Often these are seen as irreconcilable and incompatible competing perspectives. This paper integrates individualist and structuralist accounts of poverty by examining the relationship between “person poverty” and “place poverty” in nonmetropolitan and metropolitan labor markets, using a multilevel framework. I fashion a general model of poverty production and allocation, drawing on the labor market ecology perspective. After a discussion of this perspective, I develop a multilevel framework for analyzing data from the 1990 Census PUMS‐L sample, STF‐3c, and other sources to show how compositional and contextual factors affect households' likelihoods of being in poverty. These multilevel models also allow us to estimate the degree to which labor market conditions influence the magnitude of household labor supply characteristics. Results suggest that both compositional and contextual factors contribute to the metro‐nonmetro difference in poverty rates, and that the effects of employment vary in accordance with labor market characteristics.  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