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   15021篇
  免费   473篇
  国内免费   1篇
管理学   1807篇
民族学   99篇
人才学   3篇
人口学   1434篇
丛书文集   62篇
理论方法论   1284篇
综合类   167篇
社会学   7256篇
统计学   3383篇
  2023年   105篇
  2022年   101篇
  2021年   119篇
  2020年   316篇
  2019年   344篇
  2018年   568篇
  2017年   722篇
  2016年   495篇
  2015年   360篇
  2014年   449篇
  2013年   2812篇
  2012年   719篇
  2011年   443篇
  2010年   394篇
  2009年   307篇
  2008年   341篇
  2007年   323篇
  2006年   328篇
  2005年   296篇
  2004年   238篇
  2003年   254篇
  2002年   258篇
  2001年   356篇
  2000年   311篇
  1999年   288篇
  1998年   214篇
  1997年   183篇
  1996年   232篇
  1995年   197篇
  1994年   212篇
  1993年   178篇
  1992年   209篇
  1991年   222篇
  1990年   204篇
  1989年   178篇
  1988年   200篇
  1987年   185篇
  1986年   146篇
  1985年   182篇
  1984年   181篇
  1983年   158篇
  1982年   123篇
  1981年   99篇
  1980年   99篇
  1979年   123篇
  1978年   96篇
  1977年   84篇
  1975年   67篇
  1974年   70篇
  1973年   64篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
The author discusses the magnitude of the refugee problem in selected countries of Africa, with a focus on the "conceptual, methodological and practical problems faced by refugee researchers in Africa." (SUMMARY IN FRE AND SPA)  相似文献   
172.
"This paper proposes a conceptual framework for analyzing migration as a household event and presents two public use microdata applications of this approach for out-migrants from New York City. The distribution of single- and multi-origin households by race and Hispanic origin permits a more rigorous analysis of household migration differentials....and the disaggregation of household members by migration status provides insight into the household outcomes of the migration process...." (SUMMARY IN FRE AND SPA)  相似文献   
173.
174.
Old and thin     
Davis DS 《Second opinion (Park Ridge, Ill.)》1990,(15):26-32; discussion 34-9
Viewing an elderly patient's refusal of food from the perspective of the jain tradition of sallekhana (voluntary starvation) permits the author to reconcile her need to "do something" with her belief in the principle of patient autonomy.  相似文献   
175.
Rubinstein (1982) considered the problem of dividing a given surplus between two players sequentially, and then proposed a model in which the two players alternately make and respond to each other's offers through time. He further characterized the perfect equilibrium outcomes, which depend on the players time preferences and order of moves. Using both equal and unequal bargaining cost conditions and an unlimited number of rounds, two experiments were designed to compare the perfect equilibrium model to alternative models based on norms of fairness. We report analyses of final agreements, first offers, and number of bargaining rounds, which provide limited support to the perfect equilibrium model, and then conclude by recommending a shift in focus from model testing to specification of the conditions favoring one model over another.  相似文献   
176.
More and more hospitals in this country are being threatened by the removal of their Health Care Financing Authority (HCFA) Medicare Certification. A perception of competitiveness among HCFA, the Joint Commission on Accreditation of Healthcare Organizations (JCAHO), and other organizations has heightened this concern. This unpleasant situation has provoked many hospitals to prevent any type of regulator decertification. One of the practical methods of prevention is the use of a HCFA-type survey. These surveys prepare institutions for unexpected, unarmored review by regulators and should be part of the quality improvement (QI) process even in institutions with limited resources. This article discusses the means to accomplish the HCFA-type survey. The development of the survey process involves institutional commitment, hospital policy and procedures, a department review schedule, selection of review personnel, preparation of review personnel, record keeping, and department education.  相似文献   
177.
There has been a perceived increase in the number of medical negligence claims in recent years. The modern metropolitan medical examiner is increasingly called upon to deal with numerous medical, legal, social, and ethical issues. Nowhere is the role of the medical examiner more important than in the investigation of deaths related to surgical, diagnostic, anesthetic, or therapeutic procedures. Medical examiners have an important role in the investigative process. Through utilization of the offices and services of the medical examiner, questions raised by families, physicians, and other hospital employees may be satisfactorily answered a priori, and litigation may therefore be averted.  相似文献   
178.
U.S. Department of Defense experience with internal partnership programs has indicated that a lack of close supervision by medical treatment facilities can result in cost increases. The use of medical practice guidelines or standards is the subject of active investigation. The global guidelines tend to be too rigid or too vague to affect the provision of care. Their general acceptance can often be low. The use of clinical guidelines, with supervision by a clinic peer, has been determined to be a provider-friendly method of delivering cost-effective, high-quality care. Comparisons were made between the supervised partners against the total expenditures for ENT outpatient CHAMPUS care. The results indicated not only a savings but a reduction in the rate of cost increases by more than 250 percent. It is our feeling that specialty provider, peer-directed medical standards can be applied in a cost-effective manner. Their adoption as an organization-wide standard for referral can be an important tool in maintaining quality while containing costs.  相似文献   
179.
The April 1993 CPS differs from the March 1993 CPS in a number of respects. The April 1993 CPS supplement surveys only workers, whereas the March CPS examines the noncash benefits received by all Americans. The April CPS asks workers about health coverage in the week in which the questions were fielded, whereas the March CPS asks about coverage in the preceding year. In April 1993, there were 112.5 million civilian American workers between the ages of 18 and 64 with jobs. Eighty-two million (73 percent) of them worked for an employer that sponsored a health insurance plan, and 65 million (58 percent of all workers) participated in their employer's health plan. About one-third of workers at firms with fewer than 10 employees had employers who offer health benefits; about one-quarter of all of the workers in these firms participated in their employer's plan. Conversely, 94 percent of workers at firms with more than 1,000 employees had an employer who sponsored health benefits, and over 77 percent of these workers participated in their employer's plan. There are 16.5 million American workers whose employers sponsored health benefits but who did not participate in these benefits. Over one-half of these workers (8.5 million) chose not to be covered. Another 36 percent of these workers (5.9 million) did not participate because they were ineligible or denied coverage. Over 66 percent of the ineligible workers did not participate because they were part-time, contract, or temporary workers. Another 26 percent had not yet completed a probationary period. Among the reasons that those who chose not to participate in their employer's coverage, the vast majority (75 percent) stated they were covered by another health care plan. Twenty-nine percent stated that they chose not to purchase coverage because it was too costly or that they did not need or want the coverage. In 1993, there were 16.7 million workers with no health insurance coverage. The vast majority of these workers (95 percent) were employed by private employers. Sixty-six percent of the workers with no health insurance coverage were self-employed or worked for firms with fewer than 100 employees.  相似文献   
180.
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