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   6600篇
  免费   53篇
  国内免费   1篇
管理学   234篇
民族学   178篇
人才学   15篇
人口学   398篇
丛书文集   258篇
教育普及   3篇
理论方法论   3234篇
综合类   898篇
社会学   1241篇
统计学   195篇
  2022年   7篇
  2021年   7篇
  2020年   11篇
  2019年   25篇
  2018年   16篇
  2017年   22篇
  2016年   17篇
  2015年   25篇
  2014年   87篇
  2013年   30篇
  2012年   404篇
  2011年   276篇
  2010年   141篇
  2009年   99篇
  2008年   161篇
  2007年   228篇
  2006年   244篇
  2005年   185篇
  2004年   167篇
  2003年   141篇
  2002年   141篇
  2001年   159篇
  2000年   147篇
  1999年   71篇
  1998年   64篇
  1997年   37篇
  1996年   44篇
  1995年   55篇
  1994年   42篇
  1993年   184篇
  1992年   235篇
  1991年   295篇
  1990年   118篇
  1989年   221篇
  1988年   218篇
  1987年   226篇
  1986年   253篇
  1985年   270篇
  1984年   270篇
  1983年   270篇
  1982年   307篇
  1981年   350篇
  1980年   234篇
  1979年   48篇
  1978年   18篇
  1977年   7篇
  1973年   8篇
  1967年   6篇
  1959年   8篇
  1957年   9篇
排序方式: 共有6654条查询结果,搜索用时 718 毫秒
71.
Bangladesh has a population of 115 million people, and the economic growth rate of 3.7% during the 1980s was undermined by rapid population growth. The annual population growth rate was 3% in the 1960s and early 1970s, 2.5% between 1981-91 decreasing to 2.3% in 1991. The average of number of children is 4.6/woman compared with 7 in the 1960s. Infant mortality dropped from 150/1000 births in 1976 to 118/1000 in 1991. Life expectancy rose from 47 to 54 years. The 1991 Contraceptive Prevalence Survey showed that 39.9% of married women under 50 use contraceptives in 1991 vs. 18.6% in 1981. The use of modern methods increased from 10.9% in 1981 to 31.2% in 1991, while traditional methods rose from 7.7% to 8.7%. Sterilization was most prevalent in 1981. 29,000 female family planning (FP) workers were aggressively engaged in dispensing FP services in 1990. The Social Marketing Company sells pills, condoms, and oral rehydration salts through 130,000 retail outlets. The 1989 Contraceptive Prevalence Survey showed that 40% of pill and condom users obtained them from this network, and 95.4% of women knew about 4 methods of contraception. In 1990 there were 120 private organizations providing contraceptive services. Some of the components of the government FP program include field worker distribution door-to-door of injectable contraceptives (50% injectable usage rate in the Matlab project); recordkeeping activities; a satellite clinic network with access to contraceptive services; and decentralization through the Upazila (subdistrict) approach. The logistics system of FP has improved the warehousing, transportation, and management information system. Foreign aid (mainly USAID) financing of contraceptives helped avert 14.4 million births between 1974-90. The increase of contraceptive prevalence to 50% by 1997 would avert another 21.9 million births during 1991-96 (replacement fertility requires 70% prevalence.  相似文献   
72.
The paper provides an empirical analysis of saving and consumption choices of the elderly in Germany, based on the German income and expenditure surveys 1978 and 1983. Main feature of these data is the large sample size making it possible to analyze saving and consumption patterns of the very old (aged 75 and above).The observed age-consumption profiles are very different from those predicted by the pure life-cycle theory. Although wealth is declining between age 60 and 70, it increases again after 70, such that the very old have the highest savings rates among all age groups and accumulate wealth rather than decumulate it. These profiles are not confounded by cohort effects and mortality differences. The corresponding expenditure data suggest the following explanation: due to the generous German pension system and the almost complete coverage of health expenses by the mandatory health insurance in Germany, the declining consumption n very old age cannot exhaust the annuity income of the elderly such that wealth is being accumulated in old age.Research in this paper was supported by the National Institute on Aging, grant no. 3 PO1 AG05842-01. I appreciate the helpful comments by Doug Bernheim, Angus Deaton, Daniel McFadden, Jonathan Skinner, Konrad 'Stahl and David Wise, and two anonymous referees. I am indebted to Hermann Buslei and Johannes Velling who provided most valuable and able assistance.  相似文献   
73.
The China Population information Centre (CPIC), set up in May 1980, is a national institution for population information research under the State Family Planning Commission. Its main functions are to 1) collect, process, and distribute and foreign materials on population and family planning; 2) collect, tabulate, and analyze population and family planning data; 3) keep abreast of new population and family planning developments within and outside the country; 4) edit and publish information materials; and 5) provide information users with diversified services. The CPIC has 8 operational units: 1) the Library, 2) the Statistics Division, 3) the 1st Information Research Division, 4) the 2nd Information Research Division, 5) the Editorial Division, 6) the Translation Division, 7) the Computer Division, and 8) the Technical Support Division.  相似文献   
74.
A very large number of skilled Africans are found to be operating in the developed industrialized countries of the West at a time when their national economies are crying out for their services. Ways must be found to return as many of these skilled Africans as possible to the African economy. This out-migration or brain drain has a number of causes, including: 1) real incomes in Africa have been on the decline in the past several years while prices were constantly rising. Professional and salaried workers seek employment in other countries that pay much higher salaries. 2) Promotion on criteria other than merit is common in Africa and diligence and high productivity are not often rewarded. 3) Political interference frustrates public services professionals; they are rendered unable to use their professional judgement in making decisions that affect the economic and social fabric. 4) The inadequacy of higher education facilities and opportunities in African countries encourages the brightest and best qualified Africans to go to Western Europe and North America for school; they tend not to return after graduation. 5) Political upheavals and general instability contribute to feelings of individual insecurity, sending Africans to seek sanctuary in more politically stable and less repressive environments. Actions needed to control this out-migration include: 1) incentive systems should be reviewed with a view to providing realistic levels of renumeration and working conditions should be made to promote job satisfaction and self-actualization. 2) Capacities and capabilities should be strengthened so as to ensure that production of goods and services becomes indigenized and that the development and operation of institutions emanates from within the continent. 3) Educational services should be expanded and improved to obviate the need for large numbers of Africans to seek educational opportunities abroad.  相似文献   
75.
"The study investigates the departure from Australia of former settlers who arrived during the 1980 calendar year. The 1980 settler arrival cohort [consists] of 75,167 visaed migrants.... The study has three main aims: (i) to analyse departures from Australia of the 1980 settler arrival cohort with a view to gauging the success of Australia's immigration program in retaining settlers; (ii) to examine the retention rates of settlers with respect to characteristics...including age, sex, marital status, country of last residence, and settler eligibility category; and (iii) to consider implications of the findings." Australia's present immigration policy is discussed, previous research on return migration from Australia is summarized, and a detailed analysis of the departure data is presented. "This study found that by August 1984, 12.4 per cent of non-refugee settlers who arrived in Australia during 1980 had departed permanently but that only 0.6 per cent of the 1980 refugee cohort had done so." These figures represent a decline in immigrant departure rates since the 1960s and early 1970s. Small differences in departure rates by place of birth, age, and marital status, which may have demographic consequences if sustained over time, are noted. (SUMMARY IN FRE AND SPA)  相似文献   
76.
Factors affecting rural-urban migration in the USSR are examined. The author suggests that a lower rate of such migration is associated with the creation of agro-industrial centers.  相似文献   
77.
一、哪些做法不对?社会学确实在许多大学生的心目中威信不高,他们时常认为:社会学令人厌烦地对一些明显的、过分抽象的和对生活用处不大的事理作过分冗长的讨论,是堪与经济学并列的最"乏味"的科学.我们的一些同行认为,产生这种看法的原因是社会学太专业化和科学化了.但我们认为原因远不止此.专业化的知识对于任何寻求更多地了解世界的科学来说,似乎是必不可少的和正当的目标.问题不在于教师对学生教授了什么,而在于哪些还没有传授给  相似文献   
78.
分析和认识任何一门社会科学其主要任务和目标就在于使人更好地认识世界,以便有效地作用于世界.从方法论观点看,在国际关系学这门如此年轻而复杂的学科中具有首要意义的是重新合理组织有关论述这一学科科学原理的科研活动.特别是指那些"有助于建立这一学  相似文献   
79.
技术,现在已渗透于一切领域,与每个人都有关系.新的"高技术"产业吸引了宣传界的广泛注意.高技术产业极为重要,在该领域中落后的国家将成为一个"落后国家".但同样重要的是,大批的更为平凡而重要的其他发明创造也在诞生.几乎没有一件产品、一次加工、一种材料、一台设备没有得到重新设计和重新制造.技术不是第一次,不是第二次,也不是第三次浪潮,而是永久的浪潮.  相似文献   
80.
广为流传的政治小说和对它的理论研究之间存在着一种颇不协调的现象.近年来有关体裁方面的论著,大多对结构-类型体系、体裁-功能体系、体裁功能转换及分类这一类问题表现出浓厚的兴趣,而对政治小说则语焉不详.叶尔绍夫对苏联小说的分类最为全面,他把政治小说看作政论小说的一种.在人物描写、文体常项、文献利用诸手法上,两者确有相同的地方,但是,尽管"政论小说"的概念远比"政治小说"的概念宽,  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