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   13928篇
  免费   231篇
管理学   1881篇
民族学   62篇
人才学   1篇
人口学   1178篇
丛书文集   83篇
教育普及   2篇
理论方法论   1313篇
综合类   342篇
社会学   6865篇
统计学   2432篇
  2021年   73篇
  2020年   200篇
  2019年   251篇
  2018年   278篇
  2017年   391篇
  2016年   303篇
  2015年   252篇
  2014年   281篇
  2013年   2299篇
  2012年   428篇
  2011年   358篇
  2010年   243篇
  2009年   264篇
  2008年   291篇
  2007年   307篇
  2006年   239篇
  2005年   382篇
  2004年   323篇
  2003年   273篇
  2002年   306篇
  2001年   337篇
  2000年   318篇
  1999年   336篇
  1998年   227篇
  1997年   223篇
  1996年   232篇
  1995年   199篇
  1994年   213篇
  1993年   193篇
  1992年   249篇
  1991年   246篇
  1990年   223篇
  1989年   231篇
  1988年   206篇
  1987年   201篇
  1986年   200篇
  1985年   192篇
  1984年   224篇
  1983年   214篇
  1982年   178篇
  1981年   155篇
  1980年   143篇
  1979年   174篇
  1978年   147篇
  1977年   126篇
  1976年   115篇
  1975年   112篇
  1974年   103篇
  1973年   98篇
  1971年   72篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
The health of university athletes: attitudes, behaviors, and stressors   总被引:2,自引:0,他引:2  
This study examined several aspects of the health of university athletes. Five areas of concern were targeted for investigation: general health background, use of drugs and alcohol, weight and eating behaviors, stress, and use of helping resources. The authors developed a questionnaire and used it to survey 27 varsity athletic teams at a major private university. The incidence of injuries was high; one third of the 247 student athletes surveyed reported sport-related injuries. Alcohol was much more frequently used than other drugs, and use tended to decrease during the competitive season. Significant differences between men and women athletes were found in off-season alcohol and marijuana use. Anabolic steroid abuse did not appear to be a major problem for this athlete population. Issues of diet, weight, and body image were found to be significantly different for women than for men. Although the incidence of bulimia and anorexia was low for both female and male athletes, it was clear that female athletes brought to their sport heightened concern for body image. The authors discuss the psychological and interpersonal implications that these findings have for the adjustment of female athletes. Injury and academics were perceived as the most stressful factors for both men and women, whereas weight and diet issues were a major stress factor for one third of the women. Given these data, specific recommendations are made for health professionals who work with college athletes.  相似文献   
992.
Outsourcing and union power   总被引:1,自引:0,他引:1  
The outsourcing of union work and jobs either diffuses or diminishes union membership, depending on perspective and situation. The correlation of trends in union membership to trends in union power, while less than perfect, has until recently been relatively strong over the past sixteen years. The fact that as diverse a sample of unions as AFSCME, SEIU, and UAW have chosen to make outsourcing a prominent labor/public relations issue suggests that the correlation continues to be perceived by the union movement to be significant, notwithstanding the efforts of the “new” leadership of the AFL-CIO to break that link with respect to union political power by “taxing” member unions and their members to contribute both money and militancy to the 1996 election cycle. Although outsourcing may lead only to the diffusion of union membership either within or between unions, as opposed to the diminution of union membership, this fact has not received a great deal of attention. The net effect on total union membership of outsourcing from one union employer to another union employer is unclear, although the effect on the membership of the union at the outsourcing employer is not. The redistribution of membership within a union as a result of outsourcing is likely to have little immediate impact on union power. However, as even the best case scenario presented above suggests, it may have significant long-run deleterious effects on union bargaining power by taking labor out of a sheltered market and putting it into potentially competitive market. This is particularly likely to be the case when outsourcing (1) places the outsourced work into a different industry or wage contour and (2) creates the possibility of moving from sole-source to multiplesource supplier arrangements. The redistribution of membership between unions as a result of outsourcing is unlikely to have a major impact on union power broadly defined. It can have, however, serious deleterious effects in terms of the power of an individual union, as suggested in my “competitive case” scenario. The fact that one union’s losses due to outsourcing may be another union’s gain is of little consolation to the losing union. That act, in and of itself, may make the threat of outsourcing a potential union “Achilles heel” at the bargaining table by placing it into competition with some other, perhaps unknown, union as well as possibly nonunion competition. The most obvious threat to union power comes from outsourcing that diminishes union membership overall by transferring jobs from union to nonunion employers. The willingness and ability of employers to move work/jobs entirely out of the orbit of union control constitutes, in terms of power and particularly union bargaining power, a revisitation of the phenomenon of the “runaway shop.” It may also be viewed as a proactive form of hiring permanent replacements for (potentially) striking workers. The union options in dealing with such a challenge are to endeavor to preclude outsourcing through legislation or collective bargaining or to chase the work by organizing the unorganized, hopefully with the help of the unionized outsourcing employer. Neither option may be easy, but as the 1996 auto industry negotiations suggest, the former may be less difficult than the latter. The possibility that outsourcing from union to nonunion employer may provide unions with the power to organize from the top (outsourcer) down (outsourcee) cannot be entirely ignored as the issue of supplier “neutrality” reportedly was raised in the 1996 auto negotiations. The adverse effects of outsourcing on union political and financial power, by virtue of its impact on the level or distribution of union membership, can and may well be offset by an increase in union activism—as measured by dues levels, merger activity, organizing commitment, and political action. The adverse effects of outsourcing on union bargaining power are more problematical from the union standpoint. The effect of outsourcing, whatever its rationale or scenario, appears to be to put union labor back into competition. Thus, outsourcing constitutes yet another challenge to the labor movement in its ongoing and seemingly increasingly unsuccessful battle to take and keep U.S. union labor out of competition by proving itself able and willing to organize to the extent of the market and standardizing wages in that market.  相似文献   
993.
School grades, family demographics and responses to the parental authority questionnaire were assessed in 240 eighth‐grade students in the southern, central and northern parts of Tehran, Iran's capital. The result showed that poorer families with traditional values had more authoritarian attitudes toward parenting than richer families with more modern values. In contrast to the studies conducted in East Asian societies, the current study found that authoritative parenting was the style associated with the highest academic outcome. Tests of mediation and moderation effects showed that the relation between parenting style and academic outcome was independent of sociocultural context.  相似文献   
994.
Tables have been prepared for the construction and selection of multiple dependent (deferred) state (MDS) sampling plans of type MDS-(c1,c2). These plans are compared with conventional sampling plans (such as single and double sampling) and it is shown that MDS-type plans require a smaller sample size. A special feature of the MDS-(0,1) plan is highlighted and its design procedure is indicated.  相似文献   
995.
Trimmed L-moments, defined by Elamir and Seheult [2003. Trimmed L-moments. Comput. Statist. Data Anal. 43, 299–314], summarize the shape of probability distributions or data samples in a way that remains viable for heavy-tailed distributions, even those for which the mean may not exist. We derive some further theoretical results concerning trimmed L-moments: a relation with the expansion of the quantile function as a weighted sum of Jacobi polynomials; the bounds that must be satisfied by trimmed L-moments; recurrences between trimmed L-moments with different degrees of trimming; and the asymptotic distributions of sample estimators of trimmed L-moments. We also give examples of how trimmed L-moments can be used, analogously to L-moments, in the analysis of heavy-tailed data. Examples include identification of distributions using a trimmed L-moment ratio diagram, shape parameter estimation for the generalized Pareto distribution, and fitting generalized Pareto distributions to a heavy-tailed data sample of computer network traffic.  相似文献   
996.
Correspondence to Alean Al-Krenawi, Department of Social Work, Ben-Gurion University of the Negev, Israel Summary The practice of blood vengeance, the obligation to kill in retributionfor the death of a member of one's family or tribe, is illegalin most countries of the world; however, many traditional culturesstill demand this form of maintaining honour. This paper outlinesthe cultural and historical contexts of the practice of bloodvengeance among the Bedouin of the Negev of Israel. It considersthe consequences for the targeted family and details the copingstrategies adopted by the family, especially the children, underconditions of extreme social, emotional and economic deprivation.It discusses social work intervention, from initial contactto partial resolution; strategies of cultural sensitivity arealso outlined.  相似文献   
997.
998.
A longitudinal data set is employed to explore the sources of stability and change in young adults' health beliefs and behavior concerning drinking, diet, exercise, and wearing seat belts. There is substantial change in the performance of health behaviors during the first three years of college, and peers have a strong impact on the magnitude of that change. In total, however, parents are much more important than peers as sources of influence over these beliefs and behaviors. Of the various social influence processes considered, the direct modeling of behavior appears to be the most important avenue of influence for both parents and peers. These data, along with previous papers in our research program, suggest a pattern of gradually increasing parental influence on their children's health beliefs and behavior while the children are living at home, and the persistence of that influence at least through the college years.  相似文献   
999.
Non-profit industrial development organisations (NIDOs) represent a common but little studied community response to widespread deindustrialisation in the United States. These non-profits are organised as chartered not-for-profit corporations, public authorities or agencies of local government. Most receive at least some public funding to promote local industrial development. Thus, a key issue is how accountable NIDOs are to the public they have been created to serve. Data from national surveys of NIDO executive directors in 1984 and 1994, as well as a survey of six case study boards of directors, suggest that public accountability is an increasingly important concern among NIDOs. Public hearings, efforts to diversify the boards in terms of gender and race, and connections to community development corporations and other local organisations are among the ways NIDOs attempt to be accountable to the general public. Although few women or racial minorities serve on NIDO boards, those boards with representation of these groups tend to be more concerned with public accountability. Boards containing public officials tend to be less concerned, presumably because their presence makes the NIDOs more directly accountable as a result of the participation of elected public representatives.  相似文献   
1000.
The idea that a child should not have sexual interests and experiences is fast being supplanted by the knowledge that he does have them; that they are an expression of perfectly normal, healthy energies, and that while it is necessary to gain control over them, they should not be forcibly suppressed” ( Renz & Renz 1935 : 92).  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