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   11480篇
  免费   193篇
管理学   1414篇
民族学   48篇
人口学   928篇
丛书文集   62篇
教育普及   3篇
理论方法论   1005篇
综合类   115篇
社会学   6107篇
统计学   1991篇
  2023年   56篇
  2021年   61篇
  2020年   138篇
  2019年   209篇
  2018年   234篇
  2017年   335篇
  2016年   238篇
  2015年   184篇
  2014年   253篇
  2013年   2327篇
  2012年   302篇
  2011年   302篇
  2010年   221篇
  2009年   203篇
  2008年   223篇
  2007年   224篇
  2006年   246篇
  2005年   221篇
  2004年   185篇
  2003年   165篇
  2002年   186篇
  2001年   273篇
  2000年   255篇
  1999年   269篇
  1998年   170篇
  1997年   152篇
  1996年   210篇
  1995年   208篇
  1994年   216篇
  1993年   221篇
  1992年   232篇
  1991年   217篇
  1990年   240篇
  1989年   211篇
  1988年   200篇
  1987年   176篇
  1986年   164篇
  1985年   172篇
  1984年   177篇
  1983年   124篇
  1982年   123篇
  1981年   103篇
  1980年   115篇
  1979年   113篇
  1978年   96篇
  1977年   84篇
  1976年   82篇
  1975年   85篇
  1974年   57篇
  1973年   54篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
91.
A questionnaire was designed to determine the type of drug education program most desired by undergraduate students attending a major university. The survey was to provide the basis for a comprehensive drug education program. The 101 item questionnaire elicited responses from 656 undergraduates in categories ranging from knowledge base to credible information sources. The analysis of student desires as they relate to program design is included in this article. The students strongly believed the university should provide a drug education program. In particular they desired a credit course dealing with both drugs and alcohol. They also wanted regularly published articles on drugs in school publications. The most credible knowledge sources were PhDs and MDs. Students also wanted contact with former drug users. More than half the students believed that values clarification and "coping skills" training would decrease their drug use. In general more women than men were likely to utilize such resources.  相似文献   
92.
This article discusses the role of migration in relieving population pressures, thus making continuing development possible, using small nations in the Caribbean and the South Pacific as examples. The Caribbean islands and many Pacific islands have used out-migration to ease population pressures in this century. Surplus labor has been emerging in various Caribbean nations, independent of the international marketing problems of plantation agriculture. Rural populations alienated from plantations have had to make do on questionable and/or remote land. Population surpluses appear to originate in rural areas, but little evidence exists to suggest that those surpluses are the basis for the emigration patterns of the Caribbean islands. Emigration does not solve population problems because when ambitious, skilled workers leave their country, their actions have little to do with the existence of domestic surplus labor and their leaving may do little to facilitate domestic labor absorption. Thus, if mini-states wish to sustain their hopes of economic expansion, they must find the means to employ their surplus labor. Since mainly skilled migrants leave, their going may actually slow development and retard opportunities for labor absorption. Population movements internal to the Caribbean region may further complicate surplus labor and/or population problems. If protective entry requirements impede normal inter-island relations, they may interfere with developmental processes. In general, migration is not a feasible strategy for population control for small island nations. While temporary migration has a more positive impact than other forms of migration, problems do exist. For example, temporary migration 1) can impose significant economic costs on the source-country, and 2) may result in the source country being unable to capitalize on its initial investment in training and education of temporary migrants. In conclusion, import substitution through cooperation between small island nations, production for export where feasible, and more attention to more sophisticated international service linkages hold a better prospect for material progress than relying on the export of surplus populations.  相似文献   
93.
The medical model as a conceptual and operative approach to compulsive gambling is discussed. The terms medical model and disease are defined and the practical implications of their application to compulsive gambling are explored. Special attention is given to the addictive disease concept. Finally, a variety of objections to the medical model are described, but it is concluded that the many individual and social advantages of the medical model make it the preferred conceptualization at our present state of knowledge.  相似文献   
94.
A questionnaire was designed to test selected aspects of the author's General Theory of Addictions (Jacobs, 1982). Data were collected from groups of compulsive gamblers, alcoholics, and compulsive overeaters, and compared with the responses to the same questionnaire obtained from normative samples of adolescents and adults. The more inclusive term, compulsive gambler, has been used throughout, since the sample of gamblers in this study included an inpatient subgroup who had been diagnosed as pathological gamblers, as well as a subgroup of Gamblers Anonymous members who had not been clinically evaluated. Findings support the author's theoretical position that, when indulging, different kinds of addicts will tend to share a common set of dissociativelike experiences that differentiate them from nonaddicts. This has been termed a state of altered identity.  相似文献   
95.
Elective single mothers are adult, unmarried women who intentionally become mothers. This study utilized longitudinal data about 17 Caucasian, elective single mothers and their children to identify fathers' roles in these families, and to understand children's views of their fathers. These single mothers and their children resided for the first six years of the children's lives in father-absent households. By age six, most of the children had ghost fathers, whom they had never met or knew little about. The data suggest that the father often becomes a family secret, and that children may blame themselves for their fathers' absence.  相似文献   
96.
Since the aging of populations, with its extensive consequences, requires ample planning, demography is the soothsayer of gerontology. The realization that aging is the main demographic event of this century has generated an interdependence among demography, gerontology, and geriatrics, and created a base from which to extrapolate socio-political consequences from population changes. Demography transforms the personal unidimensional experience of aging to a dynamic one which traverses time and geography. Chronological age is not an exclusive criterion; this presents an opportunity to explore avenues grounded in the realms of economics, politics, policy, and culture. The inclusion of demography in international training courses of the International Institute on Aging (United Nations-Malta) has made possible an easier progression toward discussing policy, planning, funding, and social services within a broader context. The dependency of aging upon demography established the collaborative development between the Committee for International Cooperation in National Research in Demography (CICRED) and INIA and the joint hosting of a synthesis meeting on Population Ageing Research Project. In this collection of papers, Don Rowland creates the concept of the Gerontological Transition which interprets aging as a process of cohort flow; Raul Hernandez, through an evaluation of regional data, provides a classic analysis of changing age ratios within the population as a whole; Anthony Warnes, through use of mortality rates, provides a demographic analysis to expose the age-dependent variability in health and welfare payments; Paul Paillat transposes demographic numbers into social consequences; Miroslav Macura focuses on the youth in these population shifts; and the emerging elderly in the never ending cycle of events are viewed. Planning beyond the individual lifetime will become a necessity for mankind.  相似文献   
97.
A paradox currently exists regarding legal sports gambling in North America: various forms are flourishing in Nevada, Oregon, and several Canadian provinces, while at the same time the United States Congress is conducting hearings on two bills that would prohibit any new state-sponsored sports gambling initiatives. This study examines the issue of why some jurisdictions are enthusiastic about legal sports gambling while others strongly resist the concept. In reviewing these divergent viewpoints, a case study of the newfledged Canadian Sport Select gambling format is presented. This example is used to highly the perils and payoffs of a typical state-sponsored sports gambling scheme, with a view toward broadening our understanding of how they work and how they might be fairer to the public.  相似文献   
98.
"A survey is given of the use of modern statistical techniques in event history analysis, and in particular in the study of multi-state life-tables in demography. Emphasis is placed on the interplay between partial likelihood and nonparametric maximum likelihood based methods, a) when analysing semi-Markov models or models with repeated spells, and b) in frailty models for unobservable heterogeneity."  相似文献   
99.
Social workers are required to collect a considerable amount of personal information about clients and their families which may be unrelated to direct clinical work. Administrators often use this for the purpose of payment, service documentation, agency planning, and accountability. The worker's concern about the appropriateness of collecting this data may result in poor compliance or even falsification of information. In a survey of Minnesota social workers, noncompliance with data collection requirements was substantial. The authors also found a significant degree of conflict about privacy and confidentiality issues. These findings suggest a basis of concern for those who must rely on accurate data for administrative planning.  相似文献   
100.
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