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   9266篇
  免费   148篇
管理学   1325篇
民族学   35篇
人口学   850篇
丛书文集   33篇
理论方法论   708篇
综合类   108篇
社会学   4195篇
统计学   2160篇
  2021年   57篇
  2020年   144篇
  2019年   189篇
  2018年   252篇
  2017年   330篇
  2016年   232篇
  2015年   156篇
  2014年   224篇
  2013年   1538篇
  2012年   315篇
  2011年   289篇
  2010年   220篇
  2009年   203篇
  2008年   183篇
  2007年   226篇
  2006年   204篇
  2005年   206篇
  2004年   198篇
  2003年   181篇
  2002年   180篇
  2001年   230篇
  2000年   212篇
  1999年   193篇
  1998年   149篇
  1997年   143篇
  1996年   150篇
  1995年   119篇
  1994年   114篇
  1993年   112篇
  1992年   152篇
  1991年   136篇
  1990年   129篇
  1989年   118篇
  1988年   110篇
  1987年   102篇
  1986年   110篇
  1985年   119篇
  1984年   124篇
  1983年   135篇
  1982年   108篇
  1981年   93篇
  1980年   90篇
  1979年   102篇
  1978年   95篇
  1977年   82篇
  1976年   71篇
  1975年   72篇
  1974年   62篇
  1973年   60篇
  1971年   51篇
排序方式: 共有9414条查询结果,搜索用时 15 毫秒
241.
Intercollegiate athletics represent an industry prone to challenges of work addiction and life balance. Work addiction and life balance domains in male and female intercollegiate athletic coaches and administrators (N = 245) were examined using multiple regression analysis. Higher levels of stress/anxiety, sleep disturbance, and career satisfaction and lower levels of quality of relationships and friendships were the strongest predictors of work addiction. Counseling focused on reducing the negative aspects of work addiction, while maintaining job performance, may benefit this population.  相似文献   
242.
This article describes the design process and main features of an instrument developed for use in the specialist area of intervention in care homes for older persons. The essential aim of ISD-1 (instrument for social diagnosis) is to permit the correct formulation of social diagnoses and to standardise and define the professional language used by social workers. Its content has been organised into 4 dimensions of social diagnosis, divided into 15 sub-dimensions containing 83 diagnostic categories. This work was performed in Spain, in the 24 care homes of the Madrid Social Care Agency of the Community of Madrid, involving the participation of the 40 social workers practising in these centres. ISD-1 is an easily understood and used tool, of potential use for social workers practising in care homes for older persons and capable of being adapted for use in other institutional environments, as well as being capable of adaptation and translation for its application in other countries.  相似文献   
243.
244.
245.
This article presents an efficient way of dealing with adaptive expectations models—a way that makes use of all the information available in the data. The procedure is based on multiple-input transfer functions (MITFs): by calculating lead and lag cross correlations between innovations associated with the variables in the model, it is possible to determine which periods have the greatest effects on the dependent variable. If information about k periods ahead is required, fitted values for the expectation variables are used to generate k-period-ahead forecasts. These in turn can be used in the estimation of the transfer function equation, which not only contains the usual lagged variables but also allows for incorporation of lead-fitted values for the expectation variables. The MITF identification and estimation procedures used are based on the corner method. The method is contrasted with the Almon distributed-lag approach using a model relating stock market prices to interest rates and expected corporate profits.  相似文献   
246.
This paper is concerned with planning work-center capacity levels in manufacturing firms that employ a material requirements planning (MRP) system. It presents four procedures for developing work-center capacity plans designed to insure the production of components and assemblies as specified by the MRP plan and the master production schedule (MPS). These procedures (capacity planning using overall factors, capacity bills, resource profiles, and capacity requirements planning) are compared using simulation analysis. The results indicate that the performance of a procedure when measured against the MPS depends on the operating conditions of the manufacturing system. The results also indicate that the choice of a particular procedure often represents a compromise among the benefits of improved MPS performance, the costs of preparing and processing data, and the premium expenses required for more frequent adjustments in work-center capacity levels.  相似文献   
247.
Steven Martin 《Demography》2009,46(1):203-208
This analysis joins the debate on how declines in marriage have shifted the composition of the unmarried and married populations in the United States, and how compositional shifts have affected nonmarital birth rates. Gray, Stockard, and Stone (2006) presented one model for compositional effects that Ermisch (2009) challenged with alternative statistical tests. I propose an alternative model for compositional shifts based not on theory but on observed marriage and fertility patterns. The results from this alternative model are consistent with Ermisch’s findings yet support Gray et al.’s general case that compositional effects have had an important infiuence on nonmarital birth rates.  相似文献   
248.
249.
Based on a cohort of young Austrians of Turkish descent, this paper links the debate on the integration of the second generation (or the lack thereof) with the controversial discourse about the potential usefulness and risks of new media and technologies, specifically the Internet. Various studies have concluded either that the new media and technologies are positive integrative aspects of the society or have devastating impacts on different groups. On the one hand, the Internet allows young people to discover new experiences and gain additional often unorthodox knowledge; on the other hand, observers have warned about the segregating effects of new technologies. A ?digital divide“ has been opened between privileged users and the underprivileged masses, according to these more cautious voices. This divide has caused social deprivation and disintegration amongst the most vulnerable groups, in particular, older people, economically insecure groups and immigrants. Thus, various media life-styles establish a continuum between a media and information elite on the one end and the entertainment under-class on the other. Semi structured interviews with young Turks in Vienna show the positive and negative effects of playing Online Role Playing Games on the Internet in opposition to so-called Social Network Sites such as Netlog.  相似文献   
250.
This paper examines the impact of relative income on income satisfaction with given absolute income. We conducted an experiment in China where participants earned three different levels of income according to their relative performance in a task. While the treatment group was informed about their relative income, the control group only knew their own absolute income. We found that while controlling for absolute income and other factors, information about relative income increases the satisfaction of the high-income group and reduces the satisfaction of the low-income group. Relative income may interact with individual characteristics, such as gender, to affect income satisfaction. We also found that relative income treatment significantly increases income satisfaction inequality, primarily by causing social comparisons among different income groups, which has some welfare implications.  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