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   4064篇
  免费   11篇
  国内免费   1篇
管理学   193篇
劳动科学   1篇
民族学   189篇
人才学   8篇
人口学   454篇
丛书文集   146篇
教育普及   3篇
理论方法论   844篇
综合类   488篇
社会学   1584篇
统计学   166篇
  2020年   10篇
  2015年   6篇
  2014年   33篇
  2013年   19篇
  2012年   480篇
  2011年   312篇
  2010年   152篇
  2009年   66篇
  2008年   187篇
  2007年   210篇
  2006年   203篇
  2005年   145篇
  2004年   132篇
  2003年   129篇
  2002年   110篇
  2001年   90篇
  2000年   112篇
  1999年   67篇
  1998年   64篇
  1997年   48篇
  1996年   52篇
  1995年   43篇
  1994年   44篇
  1993年   62篇
  1992年   96篇
  1991年   107篇
  1990年   68篇
  1989年   85篇
  1988年   88篇
  1987年   90篇
  1986年   92篇
  1985年   69篇
  1984年   88篇
  1983年   78篇
  1982年   91篇
  1981年   79篇
  1980年   84篇
  1979年   33篇
  1978年   11篇
  1977年   12篇
  1976年   7篇
  1975年   8篇
  1974年   12篇
  1973年   8篇
  1971年   7篇
  1970年   6篇
  1967年   8篇
  1966年   8篇
  1963年   5篇
  1957年   7篇
排序方式: 共有4076条查询结果,搜索用时 15 毫秒
31.
The authors outline demographic trends in Eastern Europe and Russia since 1970. Aspects considered include population size, birth rate and number of births, marriage and divorce, death rate, infant mortality, natural increase, sex ratio, and life expectancy.  相似文献   
32.
Findings are based on a sample of four types of Turkish women affected by migration: 1) pioneer women who emigrated on their own (33 persons); 2) followers with wage work experience, who joined or left with husbands (44 persons); 3) followers without wage work experience (39 persons); and 4) women left behind when husbands migrated (45 persons). These women are compared to a non-migrant control group (54 persons). Sample surveys were conducted in three sites, which varied in levels of industrial development, economic diversification, and urbanization (Ankara, Kisehir, and eight rural villages in the province of Kisehir). The sample includes returnees registered with the Social Insurance Institute and persons located by the chain inquiry method. Prior research supports the importance of including typologies based on family types, marriage types, levels of education, and experience with wage work. This study confirms that pioneer women were more likely to have romantic marriages, to have nuclear families, to have higher educational levels, and to have prior wage work. Analysis of the 116 women with migration experience shows that 75% migrated during 1968-74. 22% migrated after 1980. 51% were returnees during 1983-85, and many received retirement benefits. Almost 65% spent 10 or more years abroad. 56% were aged under 24 years. 85% were married at the time of emigration. 61% viewed their migration experiences as improving their maturity and ability to handle affairs compared to nonmigrant women. 88% became housewives after returning. 27% of return migrants and 82% of nonmigrants had never had their own bank accounts. 69% of return migrants and only 22% of nonmigrants reported movement outside the home without permission. 63% of migrants and 39% of nonmigrants would cast political votes independently of their husbands. Migrating women exercised more independent behavior but retained traditional responsibility for housework. The greatest differences were between women with wage work and women without or with migrating husbands. Followers without wage work were the most disadvantaged. Migration is viewed as a significant factor in determining gender roles among Turkish women.  相似文献   
33.
34.
This study investigated the relative effectiveness of specific genital regional self-stimulation in elevating pain thresholds. Anecdotal reports in humans suggest that sexual activity and orgasm decrease a wide variety of human responses to pain and touch, but the phenomenon has not been evaluated objectively. Two types of self-stimulation, pressure and pleasurable, were applied by 10 women to the anterior vaginal wall, the posterior vaginal wall, and the clitoris. Significant increases in pain thresholds but not tactile thresholds occurred when pressure stimulation was applied to the anterior wall of the vagina or when "pleasurable" self-stimulation was applied to any of the three areas. Tactile thresholds were not significantly affected by any genital stimulation condition. However, there was a significant increase in tactile threshold but not pain thresholds in the distraction control condition. On the basis of these findings, we conclude that (a) a sensation of pleasure evoked by genital stimulation can elevate pain thresholds, (b) these pleasurable stimuli were not general "distractants" because they elevated pain thresholds but not tactile thresholds differentially, and (c) genital pleasurable stimuli activate an analgesic process that is distinct from a distraction process.  相似文献   
35.
This Issue Brief provides an overview of the issues relating to the Employee Retirement Income Security Act of 1974 (ERISA) and health benefit plans, the major case law relating to ERISA and health plans, and the implications of the preemption of state regulations for health plan sponsors and participants. It also presents the latest data on the number of health plan participants in self-funded ERISA plans. Finally, it presents a summary of current legislative proposals that would attempt to amend ERISA. Under the framework ERISA established for employee benefit plans, the regulation of employment-based health benefit plans has evolved into a two-tiered system in which both federal and state laws play important roles. The Supreme Court has interpreted ERISA's "savings" and "deemer" clauses to mean that insured plans are subject to regulations directly at the federal level and indirectly at the state level, while self-funded plans are regulated exclusively at the federal level. The ERISA statute and the courts' interpretations of the Act have created a sharp controversy over how employee health benefit plans are provided and administered, with state regulators and consumer advocates on one side of the debate and plan sponsors (e.g., employers and unions) on the other. State regulators and consumer advocates tend to favor more regulation, and in many instances greater regulation at the state level, which they argue would provide more protections for consumers. However, employers and unions (or any plan sponsors) think ERISA preemption is very important to their ability to provide innovative and cost-effective health benefits for their employees, and assert that ERISA's present structure should be preserved. The U.S. General Accounting Office (GAO) found that 44 million individuals (39 percent of those in ERISA plans) were enrolled in self-funded ERISA plans in 1993, up from 39 million (33 percent of those in ERISA plans) in 1989. The Employee Benefit Research Institute (EBRI), using the same methodology as GAO with 1995 data, estimated that 48 million individuals (39 percent of those in ERISA plans) were enrolled in self-funded ERISA plans in 1995. When policymakers look to amend ERISA, they should consider whether the change to ERISA will produce a higher level of quality for consumers than is being provided under the present system and will continue to do so in the future. Policymakers must also decide whether quality of care is better enhanced by health plans' greater exposure to liability or by market forces. If policymakers decide that increased exposure to liability is the route to go, will consumers be able to enjoy any potential improvement in quality or will more individuals end up uninsured because of increased costs and not be able to get any care regardless of the quality?  相似文献   
36.
"Distinction made between household-persons and household-markers [the person who identifies the family or household as a unit] is formalized in the notion of nested populations. This leads to an extension of the Leslie model into a formulation of growth for both population and households. The extended model involves the matrix presentation of household composition where ratios of household-persons who are age 0, per household-marker, function as surrogate values for fertility rates. The extended model describes change over time in the distribution of population by age, and in the distribution of households by age of household-marker, or household-head. The model involves the inversion of a nonnegative matrix, and is feasible only if it yields, projected over time, nonnegative entries in vectors representing distribution of population by age, and distribution of household-heads by age. Conditions for the feasibility of the extended model are discussed, and a sufficient condition for feasibility over a single interval is identified." (SUMMARY IN FRE)  相似文献   
37.
This study is based on interviews with a sample of 400 single women aged 18-25 years from the Fante ethnic group in Cape Coast, Ghana, in 1991, and on focus groups. This case study illustrates the importance of economic and living arrangement support expected from partners in premarital relationships. Support may be for living and maintenance ('chopmoney', provisions, household items, and rent); for financial security (provision of capital); and for clothing and hairdressing. Women did not always require economic support in premarital relationships. Women expect boyfriends to provide 'chopmoney' (money for food and general upkeep) and contribute some money for the rent. Only 36% of sexually active women expected their boyfriends to supply food provisions. Premarital sexual relationships are used to obtain start-up capital. The author refers to evidence that senior government officials engaged in sexual transactions with clients before loans and credit facilities were offered. 87% of sexually experienced women expected their partners to pay for at least part of clothing expenses. The study revealed that there was considerable disparity between women's expectations and actual receipt of economic support. 56% desired, but only 36% received, 'chopmoney' in full. 40% expected their partners to pay for household furnishings in full, while only 10% did so. 55% expected capital, but only 15% received it. The three most frequently received benefits in full were hair dressing, shoes, and dresses. Men provided most non-negotiable items as a means of "boosting their egos." Many young women rely on the support of men in order to improve their status. Ghanaian men control financial resources and economic power. Mothers of adolescent daughters encourage premarital sexual behavior. Prostitution is considered different from sexual exchange relationships. It is argued that gender inequalities and domestic abuse are perpetuated through sexual exchange relationships.  相似文献   
38.
39.
In recent years, Israel has become a major recipient of documented and undocumented temporary labour migrants from many countries outside the Middle East region. The purposes of this article are to describe Israel's experience of temporary labour migration and its concomitant, illegal labour migration; and also to explore what her policies on temporary labour migration indicate about the nature of the policy-making process in this policy domain in Israel.
To these ends the article traces the evolution of temporary labour migration – legal and illegal – and recent policy initiatives of the Israeli government. It then considers some of the major conceptions of the policy-making process found in public policy literature. The article concludes by pointing to the uniqueness of Israel's experience of temporary labour migration and to the fact that her policies have been overwhelmingly reactive – inadequately considered, ill-conceived, ambivalent in relation to their ultimate purpose and, in the course of implementation, vulnerable to "privatization" (being taken over by vested interest groups).
Analysis of the most recent policy initiatives designed to reduce the number of legal labour migrants and address the problem of illegal labour migrants, reflect a policy-making process that is not followed by commensurate action.  相似文献   
40.
"Designed in 1919-20 by the British mediator Lord Curzon as an armistice proposal between the then warring powers Poland and Soviet Russia, the Curzon Line served to identify the maximum territorial reach of Soviet political influence in Europe....[The author discusses] a program of resettlement which would target communities on both sides of the new border, a policy eventually affecting some 1.4 million individuals...." The implementation and impact of this population exchange are described.  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