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   16177篇
  免费   416篇
财政金融   3121篇
工业经济   1365篇
计划管理   2740篇
经济学   3452篇
综合类   160篇
运输经济   124篇
旅游经济   281篇
贸易经济   2456篇
农业经济   727篇
经济概况   2142篇
信息产业经济   1篇
邮电经济   24篇
  2021年   110篇
  2020年   184篇
  2019年   240篇
  2018年   349篇
  2017年   322篇
  2016年   315篇
  2015年   220篇
  2014年   355篇
  2013年   1677篇
  2012年   478篇
  2011年   485篇
  2010年   474篇
  2009年   548篇
  2008年   480篇
  2007年   391篇
  2006年   365篇
  2005年   309篇
  2004年   326篇
  2003年   325篇
  2002年   313篇
  2001年   304篇
  2000年   351篇
  1999年   302篇
  1998年   280篇
  1997年   285篇
  1996年   268篇
  1995年   249篇
  1994年   240篇
  1993年   287篇
  1992年   251篇
  1991年   260篇
  1990年   249篇
  1989年   227篇
  1988年   219篇
  1987年   195篇
  1986年   223篇
  1985年   314篇
  1984年   284篇
  1983年   286篇
  1982年   238篇
  1981年   239篇
  1980年   252篇
  1979年   207篇
  1978年   182篇
  1977年   171篇
  1976年   153篇
  1975年   143篇
  1974年   126篇
  1973年   121篇
  1972年   86篇
排序方式: 共有10000条查询结果,搜索用时 519 毫秒
971.
972.
973.
974.
An Infant Feeding Practices Study (IFPS) in 1982 in Kenya, which included a cross-sectional survey of a weighted sample of 980 low and middle income Nairobi mothers who had given birth in the previous 18 months, found that most women breastfeed their infants for long periods, but many introduce alternate feeding, especially infant formula, in the 1st 4 months (86 and 50% of the infants were breastfed at 6 and 15 months respectively, but 50% of the 2 month-olds and 63% of the 4 month-olds were receiving substitutes, mostly formula). This is done largely out of the belief that infant formula is an additional health benefit. A workshop to discuss the findings of the IFPS and other available data, and to make policy recommendations urged the adoption of a policy of protection, support and promotion of breastfeeding. Since breastfeeding is already widely prevalent in Kenya, protection of breastfeeding should receive the 1st priority in policy related to infant feeding. Attention should be directed at at least 2 influences which help undermine breastfeeding: widespread availability and promotion of breast milk substitutes. Support for breastfeeding is viewed as the 2nd policy priority. Situations where support can play a helpful role are, women's paid employment outside the home, hospital practices, maternal morbidity, and difficulties in breastfeeding. Since promotion is the least cost effective of the 3 options, and most Kenyan women are already motivated to breastfeed, this should be the last priority. Promotion includes reeduction of mothers to make them better aware of the benefits of breastfeeding. The workshop recommended the dissemination of appropriate information, consisting of standarized messages based on clearcut guidelines, using mass media techniques.  相似文献   
975.
—Governmental programs proposing rental supplements for low-income families assume that social and economic conditions of these families may be improved by such subsidy. However, this assumption has not been adequately tested by social science research. Data presented here were gathered at an urban renewal relocation housing project in Lubbock, Texas, and suggest that when families who, before urban renewal, were self-sufficient in slum housing are forced into welfare situations because of rent subsidy programs, dissatisfaction with relocation facilities results. The data also indicate that dissatisfaction is correlated positively with the number of persons in the household, the age of residents, and socioeconomic status.  相似文献   
976.
In the Netherlands all gambling is forbidden except in a few cases specially mentioned in the law. Time and again specialists in probability theory or statistics are called upon to testify as experts in lawsuits against law evaders. This paper discusses the part played by the experts in such legal procedures. It is pointed out that according to Dutch jurisprudence there does not exist an exclusive distinction between games of chance and games of skill. A simple declaration by an expert that a given game is largely based on chance suffices to see the game sentenced as against the law. This and various other related questions are discussed in detail and illustrated by examples taken from personal experience in the courts.  相似文献   
977.
Part 1 of a two-part discussion of Prostate Cancer from an underwriting perspective, covers the epidemiology and screening for prostate cancer. Included is a "Primer on Screening Tests" that discusses problems with digital rectal exam (DRE) and prostate specific antigen (PSA) as screening tests. Approaches to enhancing the use of PSA for screening including age and race specific ranging, PSA density, PSA velocity, free PSA, and complexed PSA are discussed. Arguments for and against the use of PSA for prostate cancer are presented. The widespread use of PSA testing in the insurance setting is contrasted with cautious statements concerning general use of PSA in the clinical preventive care setting. In a future issue, Part 2 will cover staging and follow-up of treated prostate cancer.  相似文献   
978.
Colleges and universities in the US differ markedly in their access to economic resources. National data are used here to describe the resulting hierarchy that's reflected in schools' spending on their students, the prices those students pay, and the subsidies they get in consequence. Both historical data and projections based on recent institutional saving suggest that economic disparities among institutions and their students are increasing. In a final section, the paper asks what to make of this: what we can say about the right degree of institutional disparity – whether we have too much, too little, or about the right amount of differentiation.  相似文献   
979.
The area of sales compensation has remained relatively untouched by recent pressures for compensation reform. This article highlights some of the ways that sales organizations stumble in managing their compensation programs, and why it takes more than a simple tactical fix to address these problems effectively. The authors describe a more structured governance framework that not only identifies and resolves key sales compensation issues, but ultimately safeguards the effectiveness and financial integrity of the sales organization itself.  相似文献   
980.
Organizations are increasingly relying on self-directed work teams (SDWTs) to accomplish organizational tasks. The introduction of SDWTs into the workplace poses a number of managerial challenges. This paper will focus on one such challenge, the continuing need to comply with labor and equal employment regulations. We discuss several factors that potentially affect the legal compliance process. These include: (1) the impact of an increasingly diverse workforce on individual behavior and team processes, and (2) the role of procedural justice perceptions in effective HR compliance management. We conclude with some practical solutions to the challenge of managing compliance in SDWT settings.  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