全文获取类型
收费全文 | 2994篇 |
免费 | 59篇 |
国内免费 | 1篇 |
专业分类
管理学 | 418篇 |
民族学 | 8篇 |
人口学 | 252篇 |
丛书文集 | 17篇 |
理论方法论 | 339篇 |
综合类 | 35篇 |
社会学 | 1217篇 |
统计学 | 768篇 |
出版年
2021年 | 16篇 |
2020年 | 48篇 |
2019年 | 67篇 |
2018年 | 90篇 |
2017年 | 104篇 |
2016年 | 62篇 |
2015年 | 72篇 |
2014年 | 85篇 |
2013年 | 585篇 |
2012年 | 116篇 |
2011年 | 96篇 |
2010年 | 75篇 |
2009年 | 61篇 |
2008年 | 78篇 |
2007年 | 78篇 |
2006年 | 62篇 |
2005年 | 54篇 |
2004年 | 43篇 |
2003年 | 25篇 |
2002年 | 47篇 |
2001年 | 56篇 |
2000年 | 56篇 |
1999年 | 46篇 |
1998年 | 40篇 |
1997年 | 43篇 |
1996年 | 33篇 |
1995年 | 38篇 |
1994年 | 48篇 |
1993年 | 42篇 |
1992年 | 50篇 |
1991年 | 51篇 |
1990年 | 36篇 |
1989年 | 38篇 |
1988年 | 47篇 |
1987年 | 24篇 |
1986年 | 28篇 |
1985年 | 43篇 |
1984年 | 35篇 |
1983年 | 43篇 |
1982年 | 31篇 |
1981年 | 25篇 |
1980年 | 26篇 |
1979年 | 25篇 |
1978年 | 42篇 |
1977年 | 26篇 |
1976年 | 28篇 |
1975年 | 28篇 |
1974年 | 21篇 |
1972年 | 18篇 |
1967年 | 16篇 |
排序方式: 共有3054条查询结果,搜索用时 15 毫秒
151.
The impact of childhood abuse and neglect on adult mental health: a prospective study 总被引:10,自引:0,他引:10
This paper examines the impact of three types of victimization in childhood--sexual abuse, physical abuse, and neglect--on lifetime measures of mental health among adults. In contrast to research that relies on retrospective recall of childhood victimization, this work uses a prospective sample gathered from records of documented court cases of childhood abuse and neglect in a midwestern city around 1970. These subjects were interviewed about twenty years later. In addition, this research compares outcomes of the 641 members of the abuse and neglect group with a matched control group of 510 persons who did not have documented cases of abuse or neglect. The results indicate that men who were abused and neglected as children have more dysthymia and antisocial personality disorder as adults than matched controls, but they did not have more alcohol problems. Abused and neglected women report more symptoms of dysthymia, antisocial personality disorder, and alcohol problems than controls. After controlling for stressful life events, however, childhood victimization had little direct impact on any lifetime mental health outcome. This research indicates the importance of adopting an approach that places childhood victimization in the context of other life stressors and of prospective changes over the life course. 相似文献
152.
153.
The relative standings of four ethnic groups - Muslim Palestinians, Christian Palestinians, Asian-African Jews, European Jews -were compared, using mobility data from 1974 and 1991. The findings show that despite the lack of government support and the prevalence of inexorable discrimination against Israeli Palestinians, they have narrowed the gap with Asian-African Jews in both education and occupational prestige. This finding demonstrates that ideological and political hegemony is not always effective in improving the socio-economic standing of preferred minorities (Asian-African Jews), and that social and economic structures may counterbalance the anti-Palestinian nationalist ideology. The analysis suggests that residential and educational segregation of Palestinians protects them from direct competition with European Jews, whereas Asian-African Jews have to compete with this dominant group in schools, as well as in the labour market. 相似文献
154.
Donald V Mathusz 《Omega》1977,5(5):593-604
Cost-benefit analysis has a considerable literature in which information systems have been patently ignored. This reflects the considerable difficulties of applying the theory to information systems, and the state-of-the art remains relatively as Koopmans described it some 19 years ago (1957). A bar to further development would appear to be the lack of an applicable value-of-information concept. This paper seeks to clarify the issues and provide a robust theoretical and data analysis framework that will cover most situations. The approach here is to separate explicitly the dimensions of cost from those of information benefit, and examine the implications. The Null Information Benefit condition emerges as a special theoretical case, but potentially a most important one in applications. This case together with the Pareto optimum defines a large class of such problems that can be handled by the decision criteria and data analysis techniques tabulated and discussed here. The selection of input data techniques defines the limits of later project justification and may be crucial to the political viability of the projects throughout its life. Finally, the general management vs information systems management relationships are discussed in terms of this situation. 相似文献
155.
ABSTRACT This article works to dispel the myth that Puerto Rican female urban high school students living in poverty are not capable of performing at high academic levels. This article attempts to counteract these beliefs by describing the four success factors that seven Puerto Rican female high school students attribute to their high academic achievement. These success factors are: (1) religiosity and extracurricular activities as sources of social capital, (2) affirming and maintaining a Puerto Rican identity, (3) maternal influences on students' academic achievement and, (4) the potential for caring teachers and other school staff to influence high academic achievement. Finally, our findings suggest that opportunities for Latinas and other youth of color are still inequitably structured in large, comprehensive high schools. Hence, we argue that schools must continue to bridge the large gap between themselves and the families/communities they serve and utilize the funds of knowledge and social capital that their students already bring to school. 相似文献
156.
Marie‐Renée Guevel Véronique Sirot Jean‐Luc Volatier Jean‐Charles Leblanc 《Risk analysis》2008,28(1):37-48
The health risk and the nutritional benefit of a food are usually assessed separately. Toxicologists recommend limiting the consumption of certain fish because of methylmercury; while nutritionists recommend eating more oily fish because of omega 3. A common evaluation is imperative to provide coherent recommendations. In order to evaluate the risks along with the benefits related to fish consumption, a common metric based on the quality-adjusted life year (QALY) method has been used. The impact of a theoretical change from a medium n-3 PUFAs intake to a high intake is studied, in terms of the cardiovascular system (CHD mortality, stroke mortality and morbidity) and on fetal neuronal development (IQ loss or gain). This application can be considered as a sensitive analysis of the model used and looks at the impact of changing the dose-response relationships between cardiovascular diseases and n-3 PUFAs intakes. Results show that increasing fish consumption may have a beneficial impact on health. However, the confidence interval of the overall estimation has a negative lower bound, which means that this increase in fish consumption may have a negative impact due to MeHg contamination. Some limits of the QALY approach are identified. The first concerns determination of the dose-response relationships. The second concerns the economic origins of the approach and of individual preferences. Finally, since only one beneficial aspect and one risk element were studied, consideration should be given to how other beneficial and risk components may be integrated in the model. 相似文献
157.
Morgan A. Bishop Anthony J. Macula Thomas E. Renz Vladimir V. Ufimtsev 《Journal of Combinatorial Optimization》2008,15(1):7-16
Classical group testing (CGT) is a widely applicable biotechnical technique used to identify a small number of distinguished
objects from a population when the presence of any one of these distinguished objects among a group of others produces an observable result. This paper discusses a variant of CGT called group testing for disjoint pairs (GTAP). The difference between the two is that in GTDP, the distinguished items are pairs from, not individual objects in,
the population. There are several biological examples of when this abstract model applies. One biological example is DNA hybridization.
The presence of pairs of hybridized DNA strands can be detected in a pool of DNA strands. Another situation is the detection
of binding interactions between prey and bait proteins. This paper gives a random pooling method, similar in spirit to hypothesis
testing, which identifies pairs of objects from a population that collectively have an observable function. This method is
simply to apply, achieves good results, is amenable to automation and can be easily modified to compensate for testing errors.
M.A. Bishop is supported by AFOSR FA8750-06-C-0007.
A.J. Macula is supported by NSF-0436298, AFOSR FA8750-06-C-0007. 相似文献
158.
Voluntary sector organizations claim to be private institutions acting for the public good. However, if the concept of public is disengaged from the state and connected instead to citizenship, VSOs can be shown to have both private and public origins, as well as private and public impacts. As citizens, VSOs are public organizations serving the public good through their purported representation of the people and civic leadership. The legitimacy of their assumption of these public roles remains a continuing challenge. 相似文献
159.
William J V Neill 《Planning Practice and Research》2015,30(1):1-14
Much attention has recently been focused on the bankruptcy of the City of Detroit in 2013 and the reasons for the largest municipal fiscal melt down in US history. Contrary to a view gaining currency, which dismisses Detroit as the product of exceptional forces and largely calls it the architect of its own collapse, this article argues the case that Detroit conveys more general lessons for European cities struggling with decline, not least of which is the need for interventionist regional planning to avoid predictable but avoidable urban distress. The article briefly reviews the well-documented decline of the city of Detroit measured against population, economic, fiscal and image impacts. It considers five current misreadings of the reasons for Detroit's predicament and implicit signposts for European practice before concluding with an assessment of what has been hailed as the shoots of yet another possible renaissance in the originally proclaimed Renaissance City over 40 years ago. 相似文献
160.
Samuel V. Bruton 《Business and Society Review》2015,120(4):607-635
Popular clothing retailer Abercrombie and Fitch (A&F) is well‐known for hiring attractive store sales clerks. While the economic benefits of this hiring practice for the company are undeniable, many commentators contend that it constitutes wrongful discrimination against unattractive job seekers. In this article, I explore the ethics of A&F‐style lookism and challenge two common perspectives on this issue. I argue that on one hand, looks‐based hiring cannot be defended based on its economic benefits alone, as race‐based hiring also can be profitable in some circumstances. At the same time, I reject arguments that looks‐based hiring is not “job relevant” given its economic impact in many contexts. Through a comparison between race‐ and looks‐based hiring, I conclude that at least for businesses that are relevantly similar to A&F—firms for which lookism produces clear economic benefits—looks‐based hiring is permissible. 相似文献