全文获取类型
收费全文 | 23978篇 |
免费 | 406篇 |
国内免费 | 2篇 |
专业分类
管理学 | 3122篇 |
民族学 | 116篇 |
人才学 | 5篇 |
人口学 | 2268篇 |
丛书文集 | 116篇 |
理论方法论 | 2301篇 |
综合类 | 233篇 |
社会学 | 11591篇 |
统计学 | 4634篇 |
出版年
2023年 | 117篇 |
2021年 | 117篇 |
2020年 | 346篇 |
2019年 | 452篇 |
2018年 | 571篇 |
2017年 | 791篇 |
2016年 | 587篇 |
2015年 | 441篇 |
2014年 | 567篇 |
2013年 | 4262篇 |
2012年 | 786篇 |
2011年 | 653篇 |
2010年 | 538篇 |
2009年 | 478篇 |
2008年 | 545篇 |
2007年 | 540篇 |
2006年 | 562篇 |
2005年 | 562篇 |
2004年 | 531篇 |
2003年 | 499篇 |
2002年 | 526篇 |
2001年 | 593篇 |
2000年 | 554篇 |
1999年 | 536篇 |
1998年 | 428篇 |
1997年 | 388篇 |
1996年 | 400篇 |
1995年 | 364篇 |
1994年 | 378篇 |
1993年 | 353篇 |
1992年 | 377篇 |
1991年 | 400篇 |
1990年 | 361篇 |
1989年 | 351篇 |
1988年 | 338篇 |
1987年 | 317篇 |
1986年 | 275篇 |
1985年 | 331篇 |
1984年 | 313篇 |
1983年 | 298篇 |
1982年 | 252篇 |
1981年 | 208篇 |
1980年 | 207篇 |
1979年 | 237篇 |
1978年 | 210篇 |
1977年 | 171篇 |
1976年 | 157篇 |
1975年 | 158篇 |
1974年 | 151篇 |
1973年 | 128篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
261.
262.
Reynolds SL 《Journal of aging & social policy》1994,6(4):53-71
This article examines the role of the print media in covering complex policy issues. Two models of journalism are considered. "Pack journalism" predicts that print media coverage will be highly consistent in content due to the reliance by those in the media on the same sources of information. In this article, another model--"Beltway journalism"--is proposed. It implies that coverage by the print media indigenous to the Washington, D.C. area (inside the Beltway) will diverge from that of other print media, presenting a potentially distorted view of the world to policymakers in Washington. Using the Washington Post and the Los Angeles Times as possible indicators of the two models, aging policy is addressed through a case study of newspaper coverage during passage and repeal of the Medicare Catastrophic Coverage Act of 1988. Findings suggest that Congress was unduly influenced by the way that Medicare Catastrophic was framed in the Washington Post, lending credence to the Beltway journalism model. By paying insufficient attention to the way Medicare Catastrophic was being framed by sources of print outside the Beltway area, lawmakers allowed themselves to assume a grassroots-level understanding of the issue and support for the bill, both of which turned out to be illusory. 相似文献
263.
Balda JB 《Nonprofit management & leadership》1994,5(1):67-83
The success of the third sector depends on public confidence, and that confidence rests, in part, on holding managers, directors, and officers of nonprofits responsible for their conduct. This accountability can be accomplished by clearly defining the roles of these individuals and the stands that they are to uphold, and by providing channels for all interested to challenge uncontrolled activities. Though interest in this goal is unanimous, a debate exists over how to ensure oversight and accountability. 相似文献
264.
Evolution strategies (ESs) are a special class of probabilistic, direct, global optimization methods. They are similar to genetic algorithms but work in continuous spaces and have the additional capability of self-adapting their major strategy parameters. This paper presents the most important features of ESs, namely their self-adaptation, as well as their robustness and potential for parallelization which they share with other evolutionary algorithms.Besides the early (1 + 1)-ES and its underlying theoretical results, the modern ( + )-ES and (, )-ES are presented with special emphasis on the self-adaptation of strategy parameters, a mechanism which enables the algorithm to evolve not only the object variables but also the characteristics of the probability distributions of normally distributed mutations. The self-adaptation property of the algorithm is also illustrated by an experimental example.The robustness of ESs is demonstrated for noisy fitness evaluations and by its application to discrete optimization problems, namely the travelling salesman problem (TSP).Finally, the paper concludes by summarizing existing work and general possibilities regarding the parallelization of evolution strategies and evolutionary algorithms in general. 相似文献
265.
Changes occurring in health care demand that physicians expand their professional knowledge and skills beyond the medical and behavioral sciences. Subjects absent from traditional medical education curricula, such as the economics and politics of health care, practice management, and leadership of professional organizations, will become important competencies, particularly for physicians who serve in management roles. Because physicians occupy a central role in planning and allocating medical care services and other health care resources, they must be better prepared to work with other health care professionals to create a new civilization, even if this means leaving the cloistered domain of "physician land" to serve as interface professionals between the delivery of medical services and the management of health care. Our research findings and conclusions strongly suggest that economic, management, and leadership competencies need to be incorporated into the professional development of physicians, especially in postgraduate and continuing education curricula. 相似文献
266.
"This article presents some of the latest available figures on illegal immigration in Japan, a process that did not assume significant proportions until the mid-1980s. It also discusses briefly the latest developments around 'immigration' policy--more precisely, the law on the entry and exit of aliens." 相似文献
267.
Merowe province in rural northern Sudan has been divided into three local government council areas: Merowe, Karima, and Ed Debba. A government program was instituted to increase the welfare of residents and food production. A baseline survey of 490 respondents was conducted in order to ascertain how illiterate women viewed development in the area and to provide useful information for program design and implementation. Women from 24 villages were administered questionnaires, observed in their daily activities, and engaged in discussion in a local meeting place. Discussions were also held with members of the local Popular Committee. Demographic information was very sketchy about age, and 48% had no formal education in writing and reading. General reading and writing skills of the remainder were very poor. There were 500 female children and 502 male children, and the sex ratio varied among the 3 council areas. 52% were married and 14% were divorced or widowed and living with relatives. The average monthly income was from Ls. 700 to Ls. 3000 based on reports from only 59.3% of respondents. Most of the women had skills in food processing and 25.7% were skilled in handicrafts. Water was obtained primarily from local wells and not decontaminated before use. Pit latrines were the standard. One bathing facility was available in the compound for the entire council area. Health units were either in each village or within 20-30 minutes walk. Child mortality was 4.3% in Merowe province. 77 children 0-5 years old died out of a total of 1002 live births. Life expectancy was 41-50 years for women and 61-70 years for men. Cleanliness and healthful eating were observed. 58% owned no land; plots were under 5 feddans and usually half a feddan. 92.1% had no bank account and 90% had no experience with loans. 70.2% were indifferent about involvement in an income generation program. 26% were interested in part-time participation. Only 3.9% desired full-time participation. 8.6% said they wanted raw materials to produce handicrafts, and 21% said they wanted cash to raise livestock. 28.4% had radios. 80.4% lacked any farm equipment. 7.6% owned an electric pump and 7% had an ox plough. A program could be offered after lunch and coordinated with other activities after 4 P.M. at a local center. The population would have to be oriented to business and income generation would have to be planned very carefully. 相似文献
268.
Dr. Diane Davis Ph.D. Dr. JoAnn Ray Ph.D. Claudette Sayles B.S.W. 《Child and Adolescent Social Work Journal》1994,12(6):445-463
Outdoor structured activities, such as Ropes Challenge Courses, are typically utilized as interventions for youth coming from urban settings. Evaluation of such programs is scanty at best. In this instance, the course experience is used as a prevention tool for high risk youth in a remote, rural setting of high unemployment, alcohol problems, and low income. The authors discuss the effectiveness of this approach, and the intended and unintended consequences for the rural community at large. The evaluation design relies on extensive qualitative methodology as well as quantitative methods to capture the unique nature of this rural project. 相似文献
269.
Carol R. Swenson D.S.W. 《Clinical Social Work Journal》1994,22(2):149-163
The story of Anna O. has loomed large in psychoanalytic history, but few social workers know that the young woman, who was so influential in the development of Freud's thinking, became a pioneer social worker in Germany. The story of the transformation of the troubled young woman, who was actually Joseph Breuer's patient, is the focus of this paper. In addition, some of the facts of the case are discussed as social constructions. Anna O./ Bertha Pappenheim participated in the creation of the talking cure and eventually went on to be a leading feminist, developer of social programs for women, and social reformer. 相似文献
270.
I. Nelson Rose J.D. B.A. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1995,11(1):15-33
This article examines the current trends of proliferation of commercial gaming, especially in the United States, in the context of the third wave of legalization of gambling that has been experienced since the founding of the nation. The author looks at the historic foundations of the spread of casino-style gambling, and notes the types of casino gaming that have led the way in the current expansion. He also points out why it is reasonable to expect that this wave too may come crashing down, as general acceptance of wide-spread casino gaming in America may indeed be short-lived.Gambling and the Law® is a registered trademark of I. Nelson Rose. 相似文献