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   1072篇
  免费   56篇
财政金融   181篇
工业经济   73篇
计划管理   165篇
经济学   313篇
综合类   9篇
运输经济   14篇
旅游经济   12篇
贸易经济   165篇
农业经济   77篇
经济概况   119篇
  2023年   11篇
  2022年   8篇
  2021年   8篇
  2020年   31篇
  2019年   37篇
  2018年   39篇
  2017年   52篇
  2016年   36篇
  2015年   35篇
  2014年   40篇
  2013年   114篇
  2012年   37篇
  2011年   49篇
  2010年   29篇
  2009年   42篇
  2008年   36篇
  2007年   31篇
  2006年   29篇
  2005年   38篇
  2004年   26篇
  2003年   34篇
  2002年   19篇
  2001年   44篇
  2000年   24篇
  1999年   18篇
  1998年   11篇
  1997年   9篇
  1996年   14篇
  1995年   7篇
  1994年   8篇
  1993年   13篇
  1992年   9篇
  1991年   16篇
  1990年   5篇
  1989年   4篇
  1988年   6篇
  1987年   8篇
  1986年   7篇
  1985年   12篇
  1984年   22篇
  1983年   10篇
  1982年   10篇
  1981年   9篇
  1980年   8篇
  1979年   14篇
  1978年   12篇
  1977年   12篇
  1976年   5篇
  1975年   6篇
  1974年   6篇
排序方式: 共有1128条查询结果,搜索用时 109 毫秒
11.
The Nested PIGLOG Model: An Application to U.S. Food Demand   总被引:1,自引:0,他引:1  
A new demand system is introduced, the Nested PIGLOG model, nesting thirteen other demand systems including five that are also new. This new model and its nested special cases are applied to models of U.S. food demand that include food-at-home (FAH), food-away-from-home (FAFH), and alcoholic beverages. Although nested tests and out-of-sample forecasting performance favor generalizing models to a certain degree, statistically insignificant improvements to in-sample-fit and even poorer out-of-sample forecast accuracy undermine further generalizations. Based on a subset of preferred models, FAFH is found to be price and income elastic compared to FAH which is price and income inelastic.  相似文献   
12.
The Internet has increased the level of importance of the end‐consumer market to transportation carriers. In two between subject experiments, carrier disclosure on retail merchant websites is examined as a strategic differentiation strategy. Predictions are offered concerning effects of carrier disclosure strategies on product delivery‐related expectations, consumer attitudes, and intentions to purchase a product online. Results from Study 1 reveal significant differences between disclosure and nondisclosure of the carrier for numerous product delivery‐related variables, as well as many differences between the six carriers examined in this first study. Study 2 extends these findings by showing that providing consumers with a choice of carrier leads to increased levels of satisfaction with the online experience and greater willingness to buy, relative to nondisclosure and disclosure strategies.  相似文献   
13.
14.
A bstract .   This paper is an analysis of the demand for thoroughbred racetrack wagers, examining evidence that would support the existence of two types of bettors: the risk-averse informed bettor versus the uninformed bettor. Looking at 12 major racetracks over the fall of 2002, we undertake an empirical examination of the determinants of bettors' preferences for particular wagers on specific races. The goal is to try to determine what individual aspects of a race (conditions, surface, participants, etc.) will encourage increased wagering dollars. With the advent of simulcasting, the competition for the wagering dollar is fierce, as the bettor can choose from more than 100 races daily, each race offering numerous betting options. We find for most wagers that higher quality participants, larger and more competitive fields, and turf races increase betting volume while higher pari-mutuel takeout, poor track conditions, and other races run concurrently reduce volume. However, more competitive fields reduce betting volume in the show and trifecta pools. Optimal field size is determined to be between 10 and 12 betting interests. Overall, we find support for the existence of a significant share of risk-averse informed bettors.  相似文献   
15.
The meaning and identification of poverty are examined usingthree indicators of standard of living in the North Indian villageof Palanpur. The first is intended as a measure of "apparentprosperity" based on the personal assessments of investigatorsafter intensive field work in the village over the full agriculturalyear 1983–84. The other two are income in 1983–84,and a measure of permanent income obtained by averaging incomesfrom four surveys conducted over a twenty-six-year interval.A comparison of these three indicators shows that income measuredin any one year may give a misleading impression of the incidenceof poverty. The risk of poverty for households is calculated.Vulnerability is high among low-caste households and those whichare involved in agricultural labor. Categories, however, arenot homogeneous; for example, whereas the landless and widowsare more likely to be poor, some of such households are quitewell off. It is argued that poverty in a good agricultural yearis a better indicator of sustained poverty than poverty in abad year. Occupational mobility out of agricultural labor islow, and changes in the distribution of land are largely accountedfor by demographic processes such as household splits.  相似文献   
16.
Mixed logit models represent a powerful discrete choice analytical model but require assumptions about the functional form of the parameter distributions. The use of unbounded distributions, such as the normal distribution, may be regarded as unsuitable where theory indicates that all are negatively affected by increases in an attribute, such as price. Bounded distributions such as the triangular and log-normal are unable to model the case where a section of the population is indifferent towards an attribute, while the remainder are negatively disposed toward it. Train and Sonnier’s bounded mixed logit model accommodates these features and is employed in this paper. A censored normal and Johnson’s Sb distribution are used to model preferences in the UK for food attributes, including price and GM technology. Bi-modal distributions are identified regarding GM food: some are unlikely to ever consume it, some are close to indifference and willing to consume at relatively small discounts while the remainder are fairly unresponsive to further price reductions.  相似文献   
17.
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   
18.
Using microdata from the Luxembourg Income Study, we assess "time crunch" for families with children in Canada, Germany, Sweden, the U.K. and the U.S. Both theory and empirical evidence suggest that both time and money are important inputs to the well-being of parents and children. We present cross-country comparisons of "total available adult hours" under different assumptions about the varying time needs of families of different size. We also present estimates of "time shortages." In all cases, we provide separate estimates for families located at different points in the country income distributions, since being short of both time and money is likely to be particularly problematic. Although paid work hours are highest for high-income families, we nonetheless find significant numbers of lower-income families in which parents work very long hours in the paid labor market; this is particularly the case in the U.S.  相似文献   
19.
20.
The substantively rational value of the games studied in this paper does not help predict subject performance in the experiment at all. An accurate model must account for the cognitive ability of the people playing the game. This paper investigates whether the variation in measured rationality bounds is correlated with the probability of winning when playing against another person in games that exceed both players’ estimated rationality bound. Does seeing deeper into a game matter when neither player can see to the end of the game? Subjects with higher measured bounds win 63 percent of the time and the larger the difference the more frequently they win.  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