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   13350篇
  免费   275篇
财政金融   2677篇
工业经济   996篇
计划管理   2019篇
经济学   2888篇
综合类   513篇
运输经济   81篇
旅游经济   202篇
贸易经济   1874篇
农业经济   660篇
经济概况   1704篇
邮电经济   11篇
  2020年   141篇
  2019年   201篇
  2018年   212篇
  2017年   240篇
  2016年   210篇
  2015年   169篇
  2014年   251篇
  2013年   1350篇
  2012年   320篇
  2011年   400篇
  2010年   354篇
  2009年   342篇
  2008年   387篇
  2007年   321篇
  2006年   237篇
  2005年   240篇
  2004年   249篇
  2003年   260篇
  2002年   263篇
  2001年   273篇
  2000年   316篇
  1999年   236篇
  1998年   253篇
  1997年   262篇
  1996年   228篇
  1995年   224篇
  1994年   234篇
  1993年   278篇
  1992年   256篇
  1991年   238篇
  1990年   223篇
  1989年   185篇
  1988年   177篇
  1987年   170篇
  1986年   185篇
  1985年   243篇
  1984年   301篇
  1983年   254篇
  1982年   245篇
  1981年   262篇
  1980年   236篇
  1979年   242篇
  1978年   199篇
  1977年   188篇
  1976年   170篇
  1975年   137篇
  1974年   139篇
  1973年   124篇
  1972年   83篇
  1969年   68篇
排序方式: 共有10000条查询结果,搜索用时 234 毫秒
211.
A MACROECONOMIC PERSPECTIVE OF AFTA'S PROBLEMS AND PROSPECTS   总被引:1,自引:0,他引:1  
The Association of Southeast Asian Nations (ASEAN) and the impressive economic performance of most of its members have increased the weight of the region's views in world fora. However, ASEAN has been unsuccessful in fostering a regional integration arrangement (RIA) leading to an increase in intraregional trade and foreign direct investment. In January 1992, ASEAN launched the Asean Free Trade Area (AFTA) seeking to establish a free trade area (FTA) by 2008.
Market integration increases economic interdependence and thereby raises the need for policy integration and discipline. This paper argues that a number of difficulties that ASEAN faced in promoting intraregional trade are likely to continue to affect AFTA (e.g., low economic complementarity and macroeconomic imbalances requiring large changes in equilibrium real exchange rates). The experience of other RIAs suggests other potential problems.
AFTA's prospects of evolving into deeper forms of sustainable integration are remote. Some cooperation in areas of common interest seems likely.  相似文献   
212.
COMMON PROPERTY AS AN INSTITUTIONAL RESPONSE TO ENVIRONMENTAL VARIABILITY   总被引:1,自引:0,他引:1  
Relationships between the potential productivity of land and property rights generally are couched in terms of measures of central tendency or means. However, risk or variance as a measure of uncertainty also is critical in relating property rights and organizational arrangements developed within various property regimes. Meteorological and hydrological research results support the appropriateness of risk-spreading property regimes, especially in semi-arid and arid lands. Spatial diversification models indicate that common property regimes can be a rational response to environmental variability. Efforts by the public sector to privatize and fence grazing lands on the extensive margin may have limited appeal to pastoralists throughout the world .  相似文献   
213.
Provision Point Mechanisms and Field Validity Tests of Contingent Valuation   总被引:2,自引:1,他引:2  
Past field validity tests of contingent valuation have relied on voluntary contribution mechanisms to elicit actual willingness to pay, and may overestimate hypothetical bias because of free riding in the actual contributions. This paper argues that provision point mechanisms are a preferred alternative for field validity tests of contingent valuation because they increase the proportion of demand revealed in cases in which public goods can be provided in a step function. The results of a contingent valuation validity study of participation in a green electricity pricing program that uses a provision point mechanism are reported, and hypothetical open-ended and dichotomous choice responses are compared to actual participation. Calibration of hypothetical responses is also explored.  相似文献   
214.
Gadopentetate dimeglumine was administered intravenously to 16 patients undergoing abdominal magnetic resonance (MR) imaging. T1-weighted and fat-suppressed T1-weighted images were acquired before and after intravenous administration of 0.1 mmol/kg gadopentetate dimeglumine. The stomach, small bowel, and colon were analyzed regarding the presence and relative intensity of contrast enhancement. Diffuse enhancement of the gastrointestinal tract wall was observed in all patients following contrast material administration. Such enhancement was most conspicuous on fat-suppressed T1-weighted images. Quantitative measurements indicated that the wall of the gastrointestinal tract enhanced approximately 100% with gadopentetate dimeglumine. This study demonstrates that enhancement of the normal gastrointestinal tract occurs routinely when intravenous gadopentetate dimeglumine is administered, and such enhancement should not be considered indicative of gastrointestinal pathology. Furthermore, it suggests the potential utility for using intravenous rather than orally administered contrast agents to provide enhancement of the gastrointestinal tract on MR images.  相似文献   
215.
Researching Preferences,Valuation and Hypothetical Bias   总被引:1,自引:0,他引:1  
A number of recent papers in environmental economics have focused on the process of researching preferences – agents are uncertain about preferences but with effort may narrow their uncertainty. This issue has arisen in formulating bids in contingent valuation (CV) as well as the debate over the divergence between WTP and WTA. In the context of CV, it has been suggested that the hypothetical nature of the preference elicitation process biases responses. This paper provides both a theoretical model and experimental evidence to contribute to this debate. The model is a model of competitive bidding for a private good with two components that are particularly relevant to the debate. The first component is that bidders are unsure of their own value for the private good but may purchase information about their own value (researching preferences). The second component is that there is a probability that the auction is hypothetical – that the winning bidder will not get the private good and will not pay the winning bid. The experiment tests this theoretical model of bidding equilibrium and analyzes the effects of variations in the parameters (hypotheticalness, information costs and number of agents) on the endogenous variables (such as the proportion of bidders who become informed and the winning bid). Experimental results suggest that an increase in the hypotheticalness of an auction tends to decrease the likelihood that bidders pay for information on their valuation with an ambiguous effect on the winning bid.   相似文献   
216.
This article on the distribution of wealth among individuals in the United Kingdom presents recent work on the effects of including pension rights and the significance of sex, age and marital status. It describes the rationale for including the accrued rights in occupational and State pension schemes (funded or unfunded) and the methods of estimation used. For funded schemes the rights are valued as the accrued liability of the schemes to their members, and for unfunded schemes similar liabilities are hypothecated; these estimates of the value of accrued pension rights involve assumptions about future earnings and interest rates. The trend in average marketable wealth with age is upwards until advanced years when it slows down or slightly reverses. Adding occupational pension rights only slightly raises the trend for females but has a bigger effect for males. Adding State pension rights raises these upward trends until the age of 60 after which there is a decline. For marketable wealth on the average males are wealthier than females but less wealthy if single, divorced or widowed. Adding occupational pension rights improves the relative position of males; adding State pension rights cancels this out. The effect of marital status rises with both age and sex and therefore a detailed three-way analysis is made. For females widows are on average the wealthiest; for young males the married; for older males the single. Using Theil's coefficient of entropy for comparing the inequality of wealth, the addition of pension rights reduces inequality by two-thirds. Age accounts for only 6 percent of inequality for marketable wealth but for 31 percent if pension rights are included.  相似文献   
217.
Why would managers abandon pay‐for‐performance plans they initiated with great hopes? Why would employees celebrate this decision? This article explores why managers made their decisions in 12 of 13 pay‐for‐performance “experiments” at Hewlett‐Packard in the mid‐1990s. We find that managers thought the costs of these programs to be higher than the benefits. Alternative managerial practices such as effective leadership, clear objectives, coaching, or training were thought a better investment. Despite the undisputed instrumentality of pay‐for‐performance to motivate, little attention has been given to whether the benefits outweigh the costs or the “fit” of these programs with high‐commitment cultures like Hewlett‐Packard was at the time. © 2004 Wiley Periodicals, Inc.  相似文献   
218.
219.
Using a small empirical model of inflation, output, and money estimated on U.S. data, we compare the relative performance of monetary targeting and inflation targeting. The results show monetary targeting to be quite inefficient, yielding both higher inflation and output variability. This is true even with a nonstochastic money demand formulation. Our results are also robust to using a P∗ model of inflation. Therefore, in these popular frameworks, there is no support for the prominent role given to money growth in the Eurosystem's monetary policy strategy.  相似文献   
220.
New market creation through transformation   总被引:1,自引:0,他引:1  
Is new market creation a search and selectionprocess within the theoretical space of all possible markets? Or is it the outcome of a process of transformation of extant realities into new possibilities? In this article we consider new market creation as a process involving a new network of stakeholders. The network is initiated through an effectual commitment that sets in motion two concurrent cycles of expanding resources and convergingconstraints that result in the new market. The dynamic model was induced from two empirical investigations, a cognitive science-based investigation of entrepreneurial expertise, and a real time history of the RFID industry. JEL Classification: M13, M31, D4, D52, D71, D72, L1, L2, P42 We would like to thank the Batten Institute at the Darden Graduate School of Business Administration, University of Virginia, for supporting this research. We would also like to thank the following on specific contributions to our thesis: Anil Menon for his relentless insistence on more precise formulations of effectual reasoning; Jim March for his conversation and for inspiring us to dig into Type I and Type II errors; Rob Wiltbank for firming up the section on opportunity costs; and Stuart Read for helping us clarify our writing. Correspondence to: S.D. Sarasvathy  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