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   89517篇
  免费   2929篇
  国内免费   3篇
管理学   11791篇
民族学   531篇
人才学   24篇
人口学   6947篇
丛书文集   525篇
教育普及   2篇
理论方法论   9390篇
综合类   2120篇
社会学   42433篇
统计学   18686篇
  2023年   506篇
  2021年   568篇
  2020年   1498篇
  2019年   2204篇
  2018年   2054篇
  2017年   3129篇
  2016年   2355篇
  2015年   2040篇
  2014年   2615篇
  2013年   18817篇
  2012年   2334篇
  2011年   2113篇
  2010年   1923篇
  2009年   2170篇
  2008年   2005篇
  2007年   1833篇
  2006年   2040篇
  2005年   2295篇
  2004年   2189篇
  2003年   1859篇
  2002年   1969篇
  2001年   2014篇
  2000年   1791篇
  1999年   1709篇
  1998年   1496篇
  1997年   1349篇
  1996年   1317篇
  1995年   1333篇
  1994年   1309篇
  1993年   1286篇
  1992年   1294篇
  1991年   1228篇
  1990年   1206篇
  1989年   1054篇
  1988年   1133篇
  1987年   1007篇
  1986年   911篇
  1985年   1065篇
  1984年   1156篇
  1983年   1028篇
  1982年   910篇
  1981年   815篇
  1980年   796篇
  1979年   846篇
  1978年   725篇
  1977年   650篇
  1976年   595篇
  1975年   573篇
  1974年   473篇
  1973年   408篇
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
981.
This study examines school enrollment in two sub-Saharan African nations, Malawi and Kenya. The article advances a refined family economy theoretical framework for understanding variations in school enrollment. It recasts family economy frameworks to consider not only how the household institution mediates a broad social change, but also how the family institution itself may be influenced by a macroinstitutional change. The findings suggest that household structural changes, as well as changes in parents' activities and perceptions, help explain enrollment practices in rural Malawi and Kenya.  相似文献   
982.
Clinical implications and ethical dilemmas of the use of confidential case material in clinical writing are examined, including a review of the discourse among professionals who publish clinical work. This literature is applied to a clinical illustration of psychotherapy with a client who gave consent for publication and read the clinical write-up of her case material. It is suggested that clinical writing may increase client “self-reflection” if there is a “secure base” of attachment between therapist/author and the client. The impact on the client’s treatment process is examined, in addition to a discussion of ethical questions and professional recommendations. 2Dr. Susanne Bennett is an Assistant Professor, National School of Social Service of the Catholic University of America. Dr. Bennett is also a psychotherapist in private practice in Falls Church, VA.  相似文献   
983.
Dynamic competitive models of industry evolution suggest that firm profit will be more volatile, and turnover lower, in industries with higher sunk costs. These implications are consistent with empirical observation. (JEL L00 )  相似文献   
984.
We specify and estimate a model of the early employment growth of technology-driven new ventures. Our estimated model is derived from labor demand theory. A data set of 100 German firms is used to conduct this analysis. The study’s findings support the relevance of the theory as applied to these nascent firms. Employment growth is significantly enhanced in ventures exhibiting high profits, experienced founders, formal information processes, and outsourced product distribution. Our findings also confirm aspects of Penrose’s theory of firm growth suggesting that transactions costs associated with larger founder teams may inhibit employment growth.  相似文献   
985.
Many thousands of people in developing country cities depend on recycling materials from waste for their livelihoods. With the focus of the Millennium Development Goals on poverty reduction, and of waste strategies on improving recycling rates, one of the major challenges in solid waste management in developing countries is how best to work with this informal sector to improve their livelihoods, working conditions and efficiency in recycling.The general characteristics of informal recycling are reviewed, highlighting both positive and negative aspects. Despite the health and social problems associated with informal recycling, it provides significant economic benefits that need to be retained. Experience shows that it can be highly counterproductive to establish new formal waste recycling systems without taking into account informal systems that already exist. The preferred option is to integrate the informal sector into waste management planning, building on their practices and experience, while working to improve efficiency and the living and working conditions of those involved. Issues associated with integrating informal recycling into the formal waste management sector are discussed.  相似文献   
986.
This article is concerned with the determinants of English language proficiency among immigrants in a longitudinal survey for Australia. It focuses on both visa category and variables derived from an economic model of the determinants of destination‐language proficiency among immigrants. Skills‐tested and economic immigrants have the greatest proficiency shortly after immigration, followed by family‐based visa recipients, with refugees having the lowest proficiency. Other variables the same, these differences disappear by 3.5 years after immigration for speaking skills; and although they diminish, they persist longer for reading and writing skills. The variables generated from the model of destination‐language proficiency (such as schooling and age at migration) are, in part, predictions of visa category, but they are more important statistically for explaining proficiency.  相似文献   
987.
This article examines why members of the U.S. House of Representatives voted for H.R. 4437, the controversial 2005 bill to construct a 700‐mile immigration barrier along the U.S.‐Mexican border and to criminalize illegal presence and aid to undocumented immigrants. Logit analysis suggests that being a first‐term House member or a Republican and representing a district that was in the South or the West or heavily blue‐collar substantially boosted the odds of supporting H.R. 4437. If a member's district was disproportionately Asian, Latino, or, especially, African American, he or she was instead more likely to oppose the measure.  相似文献   
988.
Prior corporate reputation, one responsibility of a public relations department, affects public perceptions toward corporate philanthropic messages and ultimately affects public attitudes toward the company. Using an experiment that emulates the sort of news consumption individuals normally undertake, participants inferred corporate charitable giving as a mutually beneficial activity when a company had a good reputation (H1a). Participants inferred corporate charitable giving as a self-interested activity when the company had a bad reputation (H1b). Also, public inference (suspicion) successfully mediated corporate prior reputation on public attitude toward the company (H2). Participants showed positive attitude toward the company when they inferred the company had an altruistic motive for charitable giving (H3a). However, participants showed negative attitude toward the company when they inferred the company had a self-interested motive for charitable giving (H3b).  相似文献   
989.
This paper presents a case study of a young woman’s narrative of leaving home and her transition to adulthood. The case study is part of a larger research project about young women with an experience of an early break-up from home, through running away or being thrown out. Empirical material underlying this paper consists of a qualitative study of 12 young women that have been interviewed. The aim of the study is to understand how events like running away/being thrown out of home influences their transition to adulthood. The particular narrative demonstrates how a young woman presents and accounts for such a dramatic event as running away or being thrown out from home, and how that is understood in relation to her adulthood. A further aim is to illustrate how social services efforts are reflected in her narrative.  相似文献   
990.
In studies of farming, the age of the principal decision-maker (PDM) has been associated with numerous farm structural and managerial features and has been widely accepted as a good indicator of the influence of life-cycle factors on decision-making. As such, it has become an important aspect of many quantitative studies of agricultural change. However, contemporary studies of family farming demonstrate that the concept of a single PDM in family farms is becoming an anachronism as alternative enterprises, pluriactivity and the scale of family farms force more diffuse management/operating systems. This raises questions concerning whether the age of the PDM can still be taken as representative of farm structure, strategy or life-cycle stage? Using a study conducted in the Grampian Mountains region of Scotland in 2003 this note investigates the impact of using an alternative index—compiled by averaging the age of family members working on the farm. It suggests that PDM age is a relatively poor indicator of farm structural and managerial features compared to a family age index and calls for researchers to think about alternative approaches to measuring ‘age’ as an indicator.  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