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   8248篇
  免费   94篇
  国内免费   6篇
管理学   391篇
劳动科学   11篇
民族学   1380篇
人才学   98篇
人口学   225篇
丛书文集   1254篇
理论方法论   898篇
综合类   3034篇
社会学   925篇
统计学   132篇
  2023年   52篇
  2022年   46篇
  2021年   29篇
  2020年   53篇
  2019年   45篇
  2018年   20篇
  2017年   34篇
  2016年   41篇
  2015年   94篇
  2014年   301篇
  2013年   236篇
  2012年   418篇
  2011年   388篇
  2010年   278篇
  2009年   268篇
  2008年   339篇
  2007年   235篇
  2006年   381篇
  2005年   331篇
  2004年   286篇
  2003年   284篇
  2002年   296篇
  2001年   197篇
  2000年   210篇
  1999年   168篇
  1998年   118篇
  1997年   131篇
  1996年   134篇
  1995年   107篇
  1994年   122篇
  1993年   154篇
  1992年   151篇
  1991年   168篇
  1990年   144篇
  1989年   167篇
  1988年   202篇
  1987年   183篇
  1986年   170篇
  1985年   142篇
  1984年   161篇
  1983年   210篇
  1982年   181篇
  1981年   182篇
  1980年   179篇
  1979年   93篇
  1978年   29篇
  1959年   20篇
  1958年   14篇
  1957年   15篇
  1956年   15篇
排序方式: 共有8348条查询结果,搜索用时 15 毫秒
101.
Balancing act     
  相似文献   
102.
沙漠戈壁绵亘境内2/3的阿拉善盟,建国初(原阿拉善旗、额济纳旗)仅有小学4所,初中一所,在校生738人,教职工33人.民族教育尤为落后,蒙古族识字者仅有270余人,占人口总数的2.1%.1990年底,全盟所辖三旗(阿拉善左旗、阿拉善右旗、额济纳旗)、两场(吉兰太、雅布赖盐场)各级种类学校已发展到132所,在校生33656人,其中蒙授6878人,教职工专任教师3449人,蒙授800人.建盟十年间,全盟基本普及初等教育,扫除了文盲.中小学全部实现"一无两有"或"一无五有".危房下降到0.84%.小学、初中、高中专任教师合格率均列全区前茅.冲破樊篱走出新路1983年,鉴于陈旧落后的教育结构、教学方法、教学内容、教育管理体制等制约着教育的发展.盟委、行署制定了《关于当前教育改革若干问题的决定》,首先  相似文献   
103.
The use of time for child care and housework among Swedish families is investigated. We allow the effect of children on child care and housework to vary by age of the child and also by whether the child is cared for outside the home or not. Our estimates allow us to compute the total cost of children in the form of the cost of time, and the cost of goods, services and housing.The result shows that time used for child care decreases sharply with the age of the child but this is not the case for time used for other housework. Considerable economies of scale is found to prevail for time used for child care. Child care outside the home reduces time use for other housework but the effect on time used for child care is quite small. For the average family time use cost make up more than half of total child cost. Our estimates indicate that decreased time use cost for children caused by care outside the home are not very different from a typical parental fee for public day care.This research was supported by a grant from the Swedish Council of Social Research (SFR). We thank Lennart Flood for useful comments on an earlier version.  相似文献   
104.
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   
105.
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   
106.
"Teacher, what are we going to do next class?" This is an exciting question which I often hear from my students. As an English conversation teacher, I can make the learning of English either a dull and boring duty, or an exciting adventure. It is very important that I make my students hate missing my class, and keep them guessing just what will happen the next time! Let us consider some important ways that any teacher can help his other students want to do their  相似文献   
107.
《新西兰文化与认同感·序言》大卫·诺维茨比尔·威尔莫特著涂开益徐永安译编选本书的初衷,源出编者在讨论新西兰民族认同感与文化的基本命题时,对于人们所持方式的关注。我们俩人一致认为,当时的争论有两点失之偏颇:一是如何准确理解被称之为文化的这种奇特现象,二...  相似文献   
108.
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   
109.
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   
110.
What is the future of health care in America? This is Part 2 of The Physician Executive panel discussion that explores the future of health care in America. To narrow this ambitious focus somewhat, the future is defined as five to 10 years hence. In Part 1, which was published in the May/June issue, Russell C. Coile, Jr., Barbara LeTourneau, MD, MBA, FACPE, James Reinertsen, MD, Uwe Reinhardt, PhD, Marshall Ruffin, MD, MPH, MBA, FACPE, and David Vogel, MS, shared their opinions about what the future holds in managed care, information technology, and biotechnology. In Part 2, Susan Cejka, Barbara LeTourneau, MD, MBA, FACPE, John Henry Pfifferling, PhD, Uwe Reinhardt, PhD, and James Todd, MD, share their views on the future of medical education and physician executives.  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