全文获取类型
收费全文 | 26457篇 |
免费 | 491篇 |
国内免费 | 15篇 |
专业分类
管理学 | 3577篇 |
民族学 | 193篇 |
人才学 | 2篇 |
人口学 | 3743篇 |
丛书文集 | 172篇 |
理论方法论 | 1998篇 |
综合类 | 986篇 |
社会学 | 12923篇 |
统计学 | 3369篇 |
出版年
2023年 | 86篇 |
2021年 | 127篇 |
2020年 | 261篇 |
2019年 | 323篇 |
2018年 | 2002篇 |
2017年 | 2164篇 |
2016年 | 1434篇 |
2015年 | 374篇 |
2014年 | 420篇 |
2013年 | 2712篇 |
2012年 | 868篇 |
2011年 | 1670篇 |
2010年 | 1472篇 |
2009年 | 1147篇 |
2008年 | 1303篇 |
2007年 | 1480篇 |
2006年 | 488篇 |
2005年 | 656篇 |
2004年 | 615篇 |
2003年 | 540篇 |
2002年 | 455篇 |
2001年 | 422篇 |
2000年 | 363篇 |
1999年 | 335篇 |
1998年 | 250篇 |
1997年 | 220篇 |
1996年 | 223篇 |
1995年 | 221篇 |
1994年 | 207篇 |
1993年 | 207篇 |
1992年 | 228篇 |
1991年 | 234篇 |
1990年 | 221篇 |
1989年 | 196篇 |
1988年 | 229篇 |
1987年 | 236篇 |
1986年 | 171篇 |
1985年 | 192篇 |
1984年 | 217篇 |
1983年 | 203篇 |
1982年 | 177篇 |
1981年 | 155篇 |
1980年 | 138篇 |
1979年 | 155篇 |
1978年 | 132篇 |
1977年 | 107篇 |
1976年 | 125篇 |
1975年 | 135篇 |
1974年 | 102篇 |
1972年 | 77篇 |
排序方式: 共有10000条查询结果,搜索用时 422 毫秒
61.
Larry L. Constantine 《Journal of marital and family therapy》1993,19(1):39-70
The theory of family paradigms provides an integrative framework for under-standing and systematizing the diverse ways that families organize and make sense of family life. Using formal methods of analysis based on logical and geometrical arguments, the priecise implications of models of family types can be investigated and compared. The paradigmatic framework can thus be refined and extended to form a more rigorous theoretical grounding for family typologies is explored and a miltidimensional model is derived the geometry of which is equivalent to, but more succinctly captures, the underlying structure of uariation in family para-digms. In Part II, the resulting model is interpredtd and explored in terms of implications for family theory, theory construction, and family therapy. Clarifying the basic dimensions of the paradigmatic framework also permits more precise exploration of interrelationships among related models of family types, which can be understood as reduced models derivable from the complete geometry of the paradigmatic framework. 相似文献
62.
Emmanuelle Cam Bernard Cadiou James E. Hines Jean Yves Monnat 《Journal of applied statistics》2002,29(1):163-185
Many studies have provided evidence that, in birds, inexperienced breeders have a lower probability of breeding successfully. This is often explained by lack of skills and knowledge, and sometimes late laying dates in the first breeding attempt. There is growing evidence that in many species with deferred reproduction, some prebreeders attend breeding places, acquire territories and form pairs. Several behavioural tactics assumed to be associated with territory acquisition have been described in different species. These tactics may influence the probability of recruiting in the breeding segment of the population, age of first breeding, and reproductive success in the first breeding attempt. Here we addressed the influence of behaviour ('squatting') during the prebreeding period on demographic parameters (survival and recruitment probability) in a long-lived colonial seabird species: the kittiwake. We also investigated the influence of behaviour on reproductive trajectory. Squatters have a higher survival and recruitment probability, and a higher probability of breeding successfully in the first breeding attempt in all age-classes where this category is represented. The influence of behaviour is mainly expressed in the first reproduction. However, there is a relationship between breeding success in the first occasion and subsequent occasions. The influence of breeding success in the first breeding attempt on the rest of the trajectory may indirectly reflect the influence of behaviour on breeding success in the first occasion. The shape of the reproductive trajectory is influenced by behaviour and age of first breeding. There is substantial individual variation from the mean reproductive trajectory, which is accounted for by heterogeneity in performance among individuals in the first attempt, but there is no evidence of individual heterogeneity in the rate of change over time in performance in subsequent breeding occasions 相似文献
63.
Research into the nature of aggressive behavior in youths has demonstrated that these youths are often the victims of abuse, exhibit aggressive behavior in early childhood, and remain aggressive into young adulthood. The treatment approach described in this article is a modification of Monahan's [1981] model of the prediction of violent behavior and the anger-management approach of Novaco [1985], and integrates the developmental models of Piaget [1963] and Erikson [1959]. The program is a combination of cognitive, behavioral, and expressive therapies and is targeted to the reduction of dysfunctional cognitive, affective, behavioral, and problem-solving patterns of aggressive youths. As referrals of such aggressive clients are often involuntary, interventions with unwilling and resistant clients are also presented. 相似文献
64.
THE ARTICULATION OF WORK THROUGH INTERACTION 总被引:2,自引:0,他引:2
This paper offers a set of related concepts for analyzing the interactional mechanics of how work is carried out in organizations, and for analyzing the structural/organizational conditions that bear upon work performance. Our analytic discussion centers around four main concepts: (a) articulation, (b) arrangements, (c) the process of working things out, and (d) stance. These concepts directly connect interaction to work and explain why work performance often bogs down and breaks down. 相似文献
65.
Abstract It is well recognized that the informal economy—unregulated economic activities that generate real or in-kind income—features prominently in the day-to-day lives of many in the developing world. Researchers have begun to explore the informal economy in developed countries but this work has focussed primarily on urban areas to the neglect of rural areas. In this paper the nature and correlates of informal work in nonmetropolitan Pennsylvania are described through an analysis of survey data on 505 families. Results indicate that participation in informal activities is widespread, is not more typical of the poor, does not contribute greatly to family income on average but does help many poor families weather difficult economic times, is both economically and noneconomically motivated, and, net of other sociodemographic variables, is positively related to rurality of residence and formal labor supply. 相似文献
66.
Bruce R. Hopkins Cynthia L. Moore 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》1992,3(2):194-214
The evolving democracies of Eastern Europe and the former USSR republics are keenly interested in establishing charities. They have little law on this issue because their former governments did not encourage the development of charities. This article compares US and English regulation of charities and proposes a regulatory framework based on what the authors believe are the best attributes of both. Although the framework is based on the common law system, it can be adapted to the civil law systems of the Eastern European nations and the former USSR republics. The article includes such issues as developing a body of law, tax relief and creating a regulatory agency.Mr Hopkins is a lawyer with Powers, Pyles & Sutter, 1275 Pennsylvania Ave., N.W., Washington, D.C. 20007, and author ofThe Law of Tax-Exempt Organizations (1992a).Ms Moore is also a lawyer, 5908 N. 35th St., Arlington, Virginia 22207.The authors would like to thank Mssrs Kersi Shroff and Stephen F. Clarke, Senior Legal Specialists, American-British Law Division, Library of Congress, and Mr. William H. Morris, an attorney at Steptoe & Johnson, Washington, D.C., for their kind assistance during the researching of this article. 相似文献
67.
68.
Barnacle geese ( Branta leucopsis ) make annual migrations between breeding colonies in northern Europe and Eurasia to wintering grounds in Holland. During the migration, they sojourn for several weeks in five areas on the northern coast of Germany. Observers traverse these areas during the course of studying the flocks. Previous belief was that there was little exchange of birds among the five areas; however, some banded birds were observed in more than one area indicating that some movement takes place. In this presentation, we estimate the movement rates among the areas using open- and closed-population models. 相似文献
69.
70.
Martina Löw 《Soziologie》2006,35(2):222-224
Ohne Zusammenfassung 相似文献