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   14374篇
  免费   184篇
  国内免费   2篇
管理学   1768篇
民族学   101篇
人口学   1818篇
丛书文集   48篇
理论方法论   1124篇
综合类   239篇
社会学   6414篇
统计学   3048篇
  2020年   162篇
  2019年   235篇
  2018年   771篇
  2017年   861篇
  2016年   617篇
  2015年   225篇
  2014年   268篇
  2013年   2055篇
  2012年   446篇
  2011年   726篇
  2010年   604篇
  2009年   502篇
  2008年   574篇
  2007年   664篇
  2006年   240篇
  2005年   273篇
  2004年   266篇
  2003年   240篇
  2002年   215篇
  2001年   241篇
  2000年   216篇
  1999年   193篇
  1998年   163篇
  1997年   165篇
  1996年   166篇
  1995年   142篇
  1994年   122篇
  1993年   160篇
  1992年   183篇
  1991年   164篇
  1990年   162篇
  1989年   139篇
  1988年   152篇
  1987年   128篇
  1986年   123篇
  1985年   121篇
  1984年   144篇
  1983年   136篇
  1982年   118篇
  1981年   85篇
  1980年   114篇
  1979年   127篇
  1978年   111篇
  1977年   98篇
  1976年   93篇
  1975年   106篇
  1974年   79篇
  1973年   63篇
  1972年   74篇
  1971年   63篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
"There are numerous reasons why mortality and life expectancy vary between countries. Epidemiological studies seem to indicate that dietary variations may be among them. A sample of 51 countries studied with data from the International Comparisons Project and other sources, shows that after controlling for nutrient intake, consumption of medical goods and services, income distribution, weather, and literacy, countries with more meat and poultry in their diet have lower life expectancies after age five. The results for infant mortality and child death between one and five indicate that a more animal-intensive diet may be actually beneficial, especially if fish consumption is increased and meat and poultry consumption reduced."  相似文献   
103.
"This article reports findings that have emerged from an effort made at statistically measuring the effects of immigration on the earnings of U.S.-born youth. The presence of immigrants arriving before 1965 has a positive impact on youth earnings. Recently arrived immigrants impact negatively, however. These results are consistent with recent findings that the skill level of immigrants arriving within the last two decades is lower relative to that of immigrants arriving earlier. The results also show that the negative effects diminish as the youth ages, reflecting skill acquisition and job mobility of the young worker into jobs less vulnerable to competition from immigrant workers."  相似文献   
104.
105.
This is the keynote address of H.E.Dr. Vincent Tabone, President of Malta, at the International Conference on Aging, which was held in San Diego in September 1992. He states that the conference celebrates the tenth anniversary of the Vienna International Plan of Action, and provides an opportunity to evaluate progress and plan future direction. Dr. Tabone, as Minister of Foreign Affairs, first introduced the question of aging at the UN General Assembly over twenty years ago; the United Nations Secretariat established its first program in the field of aging in 1970. At the World Assembly on Aging in 1982, all members adopted the International Plan of Action, which defined guidelines for policies and programs in support of the aging populations. As a direct result of this, and in support of the needs of developing countries, the UN signed an agreement with the government of Malta that established the International Institute on Aging as an autonomous body under the auspices of the UN; it is the major expression of the Vienna Plan of Action. Concern for aging populations has developed enough maturity and momentum to oversee its own progress. Although current events may relegate the social and economic implications of the aged to the sphere of rhetoric, they demand thinking in terms of generations and transcend all political boundaries. This conference will evaluate progress toward deflecting a situation where the elderly constitute an increasing proportion of the population, without adequate and appropriate provision for their livelihood, and could have direct bearing on encouraging and ensuring the continuity of the family's vital and traditional role in preserving the dignity, status, and well-being of its aging members. A nation which begrudges its dues to the elderly, the successful products of society and triumphs of life, denies its past. This conference is a reaffirmation of commitment to the United Nations Principles for Older Persons, an omen of the review of the Global Targets on Aging for the year 2001 by the General Assembly at its forty-seventh session in October, and a stepping stone in the path toward integrating the elderly more fully into the mainstream of society. The year 1992 is a year for solidarity between the generations.  相似文献   
106.
107.
108.
109.
Much of the strategic preoccupation of senior managers in the 1990s is focusing on the creation of customer value. Companies are seeking competitive advantage by streamlining the three processes through which they interact with their customers: product creation, order handling and service assurance. 'Micro-strategy' is a term which has been coined for the trade-offs and decisions on where and how to streamline these three processes. The article discusses micro-strategies applied by successful companies.  相似文献   
110.
Until recently, nothing much beyond education and the dispensing of condoms was being done to control the spread of AIDS. We have not yet taken sufficient measures to prevent the spread of this disease. Instead, we insist on protecting the privacy of the HIV-positive individual. However, we ignore the right to privacy by mandating testing for syphilis, which is not nearly as serious a disease as AIDS. Now, mandatory testing of health care workers is being proposed more frequently.  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