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   137904篇
  免费   3291篇
  国内免费   1篇
财政金融   25860篇
工业经济   11699篇
计划管理   21776篇
经济学   29365篇
综合类   1457篇
运输经济   1035篇
旅游经济   2708篇
贸易经济   23891篇
农业经济   6094篇
经济概况   17011篇
信息产业经济   7篇
邮电经济   293篇
  2021年   856篇
  2020年   1679篇
  2019年   2478篇
  2018年   2425篇
  2017年   2628篇
  2016年   2772篇
  2015年   2152篇
  2014年   3505篇
  2013年   15681篇
  2012年   4295篇
  2011年   4230篇
  2010年   3782篇
  2009年   4414篇
  2008年   3935篇
  2007年   3260篇
  2006年   3594篇
  2005年   3597篇
  2004年   3139篇
  2003年   2926篇
  2002年   2911篇
  2001年   2635篇
  2000年   2541篇
  1999年   2457篇
  1998年   2297篇
  1997年   2343篇
  1996年   2198篇
  1995年   1998篇
  1994年   2013篇
  1993年   1988篇
  1992年   2035篇
  1991年   1925篇
  1990年   1811篇
  1989年   1676篇
  1988年   1618篇
  1987年   1611篇
  1986年   1690篇
  1985年   2439篇
  1984年   2321篇
  1983年   2115篇
  1982年   1974篇
  1981年   1919篇
  1980年   1875篇
  1979年   1813篇
  1978年   1628篇
  1977年   1631篇
  1976年   1377篇
  1975年   1269篇
  1974年   1187篇
  1973年   1188篇
  1972年   899篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
881.
This study investigates the determinants of household expenditures on poultry and seafood using the 1992 Consumer Expenditure Survey. Higher income and larger households with a better-educated and older household head spend more on poultry, especially during the fourth quarter of the year, than others. Higher income and north-eastern households with a non-white and better-educated household head spend more on seafood than others. Poultry expenditures are more sensitive to changes in household size than to changes in household income. In contrast, seafood expenditures are more sensitive to changes in household income than to changes in household size.  相似文献   
882.
In an era of domestic and economic reform wherein deregulation/privatisation becomes a priority, short shift has too often been given to evaluative analyses of business activities. Evaluative monitoring and oversight are especially needful in highly competitive international business environments, where the temptations are very strong to adjudge individual effectiveness by the sole criterion of the bottom line. But what additional or alternative criteria should be administered, and by whom, is less clear. That any but the most vague Judeo-Christian or secular ethical standards are applicable (e.g. notions of fairness) is widely contested. The debate is significantly only widened when doing business across national borders involving peoples from different cultures and languages. This section is devoted to explicating the normative role of international codes of conduct for guiding the decision making of managers involved in multinational operations, and clarifying what ethical frameworks are available to the international manager for taking decisions which require selecting actions inconsistent with either home or host country demands.Daniel W. Skubik is a lecturer in the College of Liberal Arts, Florida Atlantic University; and is also an independent consultant. He holds the PhD (philosophy), a JD (law), and an MA (Hons.).  相似文献   
883.
884.
Aggregate agricultural commodity demand parameters are estimated, based on an application of the Deaton and Muellbauer Almost Ideal Demand System to a seventeen year Indonesian time-series data set of prices, expenditures and consumption availability. The statistical results are generally significant and correctly signed. The revealed demand relationships imply that the Indonesian food Staples are normal goods. Expenditure elasticities are higher for the higher value foodstuffs than for the lower value starchy staples. Furthermore, the demand for rice has become highly inelastic to both own and cross-price interventions. This implies that rice price interventions will require a high degree of fine-tuning in order to stabilise prices effectively, and that low urban rice prices cannot be regarded as an appropriate, or even second best policy instrument for improving nutritional status.

A high degree of Substitution between rice and secondary food crops, and amongst groups of secondary food crops, is identified. The significance of the cross-price elasticities for the secondary food crops suggests that single-market interventions will have non-trivial budget-mediated effects in other commodity markets. The management of a multi-commodity food policy requires that the spillover effects from commodity pricing policy must be taken into account in order to optimise the effects of price policy interventions.  相似文献   

885.
Employment,schooling and productivity growth   总被引:1,自引:1,他引:0  
Summary This paper presents an empirical analysis of labour demand and labour productivity growth in The Netherlands. Assuming an aggregate production function with as factors capital and 3 types of labour, distinguished by educational attainment, cost minimization leads to a set of 3 labour demand relations to be estimated on time series data. Using the estimates and the implied elasticities, aggregate labour productivity growth is decomposed into factor substitution, autonomous factors, labour time shortening, economies of scale, utilization rates and the increased educational level of the working population. The contributions of substitution, utilization rates and education appear to be substantial, notably in the seventies.

List of symbols

Variables a i Efficiency index of skill leveli - C production - h i working-time index for skill leveli - g i steady-state growth rate of skill leveli - K capital stock - L i employment volume of skill leveli - L i * desired level of labour skill leveli - p output price - p * desired output price - s i * long-run static labour shares in the production value - p k rental price of capital - P index of total factor productivity - P l index of labour productivity - u i utilization rate of skill leveli - u k utilization rate of capital - w i wage rate for skill leveli - y production volume - y yij Hicks partial elasticities of complementarity - i steady-state cost share of skill leveli - k Bk steady-state cost share of capital - f lf highest level price index in cost function nesting - g 4 intermediate level price index in cost function nesting - h 4 lowest level price index in cost function nesting - i steady-state relative wage share of skill leveli - ij Allen partial elasticities of substitution Parameters d i l adjustment speed of skill leveli - d p price adjustment speed - M mark-up on marginal costs - scale elasticity of production - i distribution parameter in cost function,i = 3, g - i distribution parameter in cost function,i = k, h - i distribution parameter in cost function,i =1, 2 - i autonomous labour productivity growth for skill leveli - i cost share of skill level in base year - f production cost index in base year - i hours elasticity in labour efficiency index - group elasticity of substitution betweenL 3 and (K, (L 1,L 2)) - g Og group elasticity of substitution betweenK and (L 1,L 2) - h 6h group elasticity of substitution betweenL 1 andL 2 We would like to thank B. Downey, G.M.M. Gelauff, A. Nieuwenhuis, J.M.M. Ritzen, J.C. Siebrand and an unknown referee for helpful comments on earlier drafts.  相似文献   
886.
"Analyzing the location choices of the post-1964 U.S. immigrants results in three main findings: (1) these immigrants are more geographically concentrated than natives of the same age and ethnicity and reside in cities with large ethnic populations; (2) education plays a key role in location choice, reducing geographic concentration and the likelihood of being in cities with a high concentration of fellow countrymen and increasing the probability of changing locations after arrival in the United States; (3) internal migration within the United States occurs more frequently among immigrants than natives and facilitates the process of assimilation for the more educated individuals."  相似文献   
887.
Optimal new-product pricing in regulated industries   总被引:1,自引:0,他引:1  
Intertemporal pricing issues faced by regulated monopolists in market settings characterized by high rates of innovation have received little attention in the regulatory economics literature. Most analyses of regulatory pricing have focused on monopolies characterized by a stable multiple-good product set. In a regulated industry characterized by technological change in the form of new products and services (such as telecommunications), optimal pricing decisions may also reflect intertemporal market and production factors. In this paper, two such intertemporal factors are modeled: learning curve effects on the firm's cost function, and customer demonstration effects on the demand side of the market. Inclusion of these factors leads to an intertemporal pricing rule that may conflict with the standard regulatory practice whereby each product or service must recoup its own resource costs period by period. Our results suggest that this regulatory practice can result in efficiency losses, since it results in a rate of technological diffusion that is too low.  相似文献   
888.
This study reports the results of a survey designed to assess the impact of education on the perceptions of ethical beliefs of students. The study examines the beliefs of students from selected colleges in an eastern university. The results indicate that beliefs which students perceive are required to succeed in the university differ among colleges. Business and economics students consistently perceive a greater need for unethical beliefs than students from other colleges. Michael S. Lane is an Associate Professor of Management at West Virginia University. He is the coauthor of Corporate Goal structures and Business students: A Comparative Study of Values, Journal of Business Ethics (1989). Dietrich L. Schaupp is Professor of Management at West Virginia University. He is the coauthor of Pygmalion Effect: An Issue for Business Education and Ethics, Journal of Business Ethics (1988).  相似文献   
889.
While it is common to observe that our society and world are becoming increasingly complex and fast paced, most of our theories provide no bases upon which to develop appropriate strategies. The need for developing holistic strategies is becoming urgent in two related areas: major interactive technologies and morality. Jonathan King is Associate Professor of Management at the College of Business at Oregon State University. He received his B.A. in philosophy from Antioch College (1965) and his M.B.A. in Finance (1975) and Ph.D. in Business, Government and Society (1980) from the University of Washington. His primary research interests are in the areas of moral philosophy and General Systems Theory. His most important publications are The Three Faces of Thinking, Journal of Higher Education (1986) and Prisoner's Paradoxes, Journal of Business Ethics (1988).  相似文献   
890.
Condemnation of the long-and-short-haul discrimination has been nearly ubiquitous in the literature on economic theory and transportation. However, the French economist Dupuit developed a case against all transport regulation by relating it to a defense of the practice of place discrimination before the middle of the nineteenth century. He did so, moreover, within an early elaboration of a full price explanation of competitive functioning. This paper analyzes the idea in Dupuit's context and argues that this so-called form of price discrimination is actually an efficient and necessary form of the competitive process.  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