全文获取类型
收费全文 | 1207篇 |
免费 | 70篇 |
专业分类
管理学 | 90篇 |
民族学 | 19篇 |
人口学 | 140篇 |
丛书文集 | 2篇 |
理论方法论 | 158篇 |
综合类 | 8篇 |
社会学 | 803篇 |
统计学 | 57篇 |
出版年
2024年 | 4篇 |
2023年 | 18篇 |
2022年 | 11篇 |
2021年 | 12篇 |
2020年 | 51篇 |
2019年 | 44篇 |
2018年 | 74篇 |
2017年 | 112篇 |
2016年 | 83篇 |
2015年 | 62篇 |
2014年 | 48篇 |
2013年 | 219篇 |
2012年 | 64篇 |
2011年 | 68篇 |
2010年 | 35篇 |
2009年 | 38篇 |
2008年 | 51篇 |
2007年 | 38篇 |
2006年 | 31篇 |
2005年 | 34篇 |
2004年 | 23篇 |
2003年 | 30篇 |
2002年 | 28篇 |
2001年 | 10篇 |
2000年 | 11篇 |
1999年 | 18篇 |
1998年 | 9篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 10篇 |
1994年 | 2篇 |
1993年 | 7篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 4篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 1篇 |
排序方式: 共有1277条查询结果,搜索用时 15 毫秒
931.
This study investigates whether the type of parental permission affects prevalence estimates for risk behaviors from the national 2001 Youth Risk Behavior Survey. Participants were 13,195 students from 143 schools, of which 65% used passive permission and 35% active permission. Student participation rates were 86.7% in passive permission schools and 77.3% in active permission schools. For 24 of 26 behaviors tested, no significant differences were seen in the prevalence of risk behavior by type of parental permission. As long as high response rates are obtained, type of parental permission does not affect prevalence estimates for risk behaviors that are based on self-report. 相似文献
932.
We discuss the simple model pioneered by Barclay and Holderness (1989, Journal of Financial Economics 25: 371–395) and recently reproposed by Dyck and Zingales (2004a, Journal of Finance 2, 537–600; 2004b Journal of Applied Corporate Finance 16, 51–72) in order to measure the value of control in countries, like Italy, where transfer of control is regulated by law. We demonstrate that it is possible to broaden the application of B&;H approach to block trades followed by mandatory tender offers and we show the conditions under which we may obtain significant measures of private benefits also when voluntary tender offers are considered. In order to test for our theoretical predictions, we analyse the pricing of 27 control transactions involving the common stock of Italian listed corporations between 1993 and 2003. We find that block-transaction (tender) premium equals on average 8% of the firm’s equity value in the case of pure block-trades, 9% in the case of block trades followed by a mandatory tender offer, while it increases to 18% in the case of voluntary tender offers. The results suggest that, in the case of block trades followed by a mandatory tender offer, the acquirer does not transfer a larger portion of its surplus. This doesn’t take place in the case of voluntary tender offers, in which the raider’s bargaining power collapses. Our estimate of the control premium is sensibly lower than that presented in previous studies based on similar methodologies, providing up-to-date evidence for control stake valuation purposes and for comparison with cross country studies aiming at assessing the quality of rules devoted to minority shareholders’ protection. We also perform a cross-sectional regression analysis of private benefits of control and confirm some of the findings presented in the previous literature: particularly, we find evidence of a positive relation between the magnitude of private benefits of control and the target’s degree of stock-pyramiding. We also find that foreign acquirers and financial investors seem likely to face greater difficulties in extracting private benefits of control. 相似文献
933.
Bridging Refugee Youth and Children's Services(BRYCS), a public-private partnership between the federal Office of Refugee Resettlement, Lutheran Immigration and Refugee Service, and the United States Conference of Catholic Bishops, provides national technical assistance to public child welfare. After a series of "community conversations," BRYCS identified a lack of knowledge among child welfare staff about newcomer refugees, negative stereotypes, and a fear of child protective services among refugees. BRYCS initiated a number of technical assistance initiatives, including a pilot cross-service training project in St. Louis to strengthen collaboration between child welfare and refugee-serving agencies. This article details the lessons learned from this training and recommends changes in policy and practice. 相似文献
934.
This study examined the resettlement experiences of unaccompanied Sudanese refugee youth placed in foster care from the perspectives of the youth, foster parents, and agency caseworkers. Youth experienced considerable success. The challenges of adjusting to school and family life, however, suggest a need for funding to support more intensive educational services, more cultural training and support for foster parents and school personnel, and flexibility to provide services in more culturally appropriate modalities. 相似文献
935.
Kyung-Wook?ChaEmail author Robert?O.?Weagley Laura?Reynolds 《Journal of Family and Economic Issues》2005,26(3):299-321
Using the 1992–1993 Baccalaureate and Beyond Longitudinal Study, with the 1997 follow-up, the parental decision to borrow
and, for borrowers, the level of borrowing for dependent children’s college education was analyzed. Parents with smaller household
size and those being college graduates borrowed greater amounts. White parents borrowed greater amounts than their non-White
counterparts. The age of the student, dependent students’ income and parents’ cash and savings each had a significant negative
impact on the amount parents borrowed, while home equity was a significant positive factor. Greater college costs significantly
increased parents’ decision to borrow, as well as the borrowed amount. Greater amounts of grants significantly reduced the
amount borrowed. 相似文献
936.
937.
Nationwide efforts to protect the public against the health effects of secondhand smoke have prompted college and university administrators to adopt more restrictive smoking policies. Some campus officials are concerned that new policies will lead to student backlash, increased staff workloads, and an increased economic burden. To understand the impact of smoke-free residence hall policies, we conducted key informant interviews and gathered archival data at 3 large state universities. The implementation of smoke-free residence hall policies imposed little economic burden. We noted positive impacts in several key areas, including decreased damage to residence hall buildings, increased student retention, and improved enforcement of marijuana policies. Increased costs, such as the purchase of outdoor cigarette receptacles, were outweighed by the benefits. Findings from this study should encourage college and university administrators to enact smoke-free residence hall policies. 相似文献
938.
Via four case studies we explore the extent to which digitization is transforming how people access and engage with the arts. The first case study is the online auction house eBay. We focus on a unique system whereby millions of users rate each other's integrity and reputations in a digital venue via a transparent system open to all users and visitors alike. The second case study examines the Screen Actors Guild strike against the advertising industry, which drew attention to the potential for and limitation of the replacement of human actors by digitized replicas. Third, we focus on e-books in the context of the prediction that most books, music and film entertainment will eventually be distributed electronically to the average household. The fourth case study analyzes the Napster debate over file sharing and duplication of online music. We focus on the ability of Napster to create a huge community of users sharing their own copies of digital music. From this point of view Napster represented a uniquely efficient and large-scale dream, a modern form of the cooperation and sharing of property envisaged by classical anarchist philosophers of the nineteenth century. On the other hand, and as always in anarchistic uprisings, another class claimed proprietary ownership in the material being shared and saw in Napster mostly collective theft on the part of ordinary citizens. Three of these four case studies centrally involve ordinary people using the digital media in creative and innovative ways. We conclude by arguing, against those who are skeptical about the transforming power of digitization, that even in the short time that it has been widely available digitization has so increased people's ability to interact creatively with products that this amounts to a qualitative change which, over the next few decades, is likely to develop so far as to justify the label revolution. 相似文献
939.
Data from the Total Army Injury and Health Outcomes Database (TAIHOD) were used to describe 28,352 fall-related hospitalizations among active-duty Army soldiers between 1980 and 1998. Soldiers who were younger than age 26, single, and had a high school education or less were at greatest risk. Falls from a height were more likely to be fatal than other types of falls, accounting for 88% of all fatalities. In cases where duty status was known, 64% of the falls took place while the soldier was on duty and half of these occurred during training. The most common type of fall during training was fall from a height (37%). Falls on stairs and ladders accounted for 49% of all off-duty falls. Future research should include identification of specific behavioral and occupational risk factors for falls, particularly those occurring during training activities, and falls occurring off duty. 相似文献
940.
This paper is the fourth in a series of articles dealing with difficult counseling problems encountered by career counselors. Clinicians need to understand the underlying causes of floundering behavior and the reasons that propel some people to retreat to a career and psychological moratorium. This article focuses on young adults in career transition and underscores their needs for greater self-understanding. Resources for career counseling suggestions are noted within the context of a traditional five-stage career counseling model. 相似文献