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   1494篇
  免费   60篇
财政金融   348篇
工业经济   80篇
计划管理   235篇
经济学   379篇
综合类   8篇
运输经济   10篇
旅游经济   11篇
贸易经济   321篇
农业经济   42篇
经济概况   104篇
邮电经济   16篇
  2023年   20篇
  2022年   15篇
  2021年   20篇
  2020年   44篇
  2019年   73篇
  2018年   75篇
  2017年   69篇
  2016年   77篇
  2015年   50篇
  2014年   64篇
  2013年   172篇
  2012年   85篇
  2011年   93篇
  2010年   72篇
  2009年   74篇
  2008年   43篇
  2007年   45篇
  2006年   46篇
  2005年   29篇
  2004年   30篇
  2003年   30篇
  2002年   27篇
  2001年   18篇
  2000年   26篇
  1999年   10篇
  1998年   8篇
  1997年   16篇
  1996年   12篇
  1995年   10篇
  1994年   11篇
  1993年   10篇
  1991年   6篇
  1990年   8篇
  1987年   5篇
  1985年   8篇
  1984年   5篇
  1983年   4篇
  1982年   10篇
  1981年   6篇
  1980年   9篇
  1978年   10篇
  1976年   11篇
  1975年   8篇
  1973年   4篇
  1970年   4篇
  1966年   5篇
  1959年   4篇
  1958年   5篇
  1956年   6篇
  1931年   3篇
排序方式: 共有1554条查询结果,搜索用时 15 毫秒
81.
In an integrated corporate tax system, resident shareholders receive a tax credit for corporate tax paid that can be used to offset personal tax on dividend income. Nonresident and tax-exempt (pension plan) investors cannot use the tax credit on corporate dividends and thus prefer to invest in flow-through entities. We estimate the value of the flow-through entity to nonresident and pension plan investors by examining the price change around the date of an unexpected announcement of a change in tax law related to Canadian publicly traded income trusts units creating an entity-level tax that makes them no longer tax-favored to these investors.  相似文献   
82.
IPO Pricing in the Dot-com Bubble   总被引:9,自引:1,他引:9  
IPO underpricing reached astronomical levels during 1999 and 2000. We show that the regime shift in initial returns and other elements of pricing behavior can be at least partially accounted for by marked changes in pre-IPO ownership structure and insider selling behavior over the period, which reduced key decision makers' incentives to control underpricing. After controlling for these changes, the difference in underpricing between 1999 and 2000 and the preceding three years is much reduced. Our results suggest that it was firm characteristics that were unique during the "dot-com bubble" and that pricing behavior followed from incentives created by these characteristics.  相似文献   
83.
84.
Alexander Zaigraev 《Metrika》2002,56(3):259-273
Within the framework of classical linear regression model optimal design criteria of stochastic nature are considered. The particular attention is paid to the shape criterion. Also its limit behaviour is established which generalizes that of the distance stochastic optimality criterion. Examples of the limit maximin criterion are considered and optimal designs for the line fit model are found.  相似文献   
85.
86.
To address agility in public administration, we have developed a knowledge acquisition infrastructure for legal knowledge, based on an implementation‐oriented conceptualization of the legal system. Our objective is to reframe legal knowledge as a knowledge source in a design‐oriented task ontology, building on insights from the CommonKADS methodology for intelligent system design. The main result is to make case law and legal expert knowledge of critical incidents in organizations, two diagnostic knowledge sources underutilized in modern management and engineering, more accessible as a resource for design of agile organizational structures and intelligent systems. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   
87.
Abstract

The objective of this paper is to investigate dynamic properties of age trajectories of physiological indices and their effects on mortality risk and longevity using longitudinal data on more than 5,000 individuals collected in biennial examinations of the Framingham Heart Study (FHS) original cohort during about 50 subsequent years of follow-up. We first performed empirical analyses of the FHS longitudinal data. We evaluated average age trajectories of indices describing physiological states for different groups of individuals and established their connections with mortality risk. These indices include body mass index, diastolic blood pressure, pulse pressure, pulse rate, level of blood glucose, hematocrit, and serum cholesterol. To be able to investigate dynamic mechanisms responsible for changes in the aging human organisms using available longitudinal data, we further developed a stochastic process model of human mortality and aging, by including in it the notions of “physiological norms,” “allostatic adaptation and allostatic load,” “stress resistance,” and other characteristics associated with the internal process of aging and the effects of external disturbances. In this model, the persistent deviation of physiological indices from their normal values contributes to an increase in morbidity and mortality risks. We used the stochastic process model in the statistical analyses of longitudinal FHS data. We found that different indices have different average age patterns and different dynamic properties. We also found that age trajectories of long-lived individuals differ from those of the shorter-lived members of the FHS original cohort for both sexes. Using methods of statistical modeling, we evaluated “normal” age trajectories of physiological indices and the dynamic effects of allostatic adaptation. The model allows for evaluating average patterns of aging-related decline in stress resistance. This effect is captured by the narrowing of the U-shaped mortality risk (considered a function of physiological state) with age. We showed that individual indices and their rates of change with age, as well as other measures of individual variability, manifested during the life course are important contributors to mortality risks. The advantages and limitations of the approach are discussed.  相似文献   
88.
The analysis of diffusion processes in financial models is crucially dependent on the form of the drift and diffusion coefficient functions. A new model for a stock market index process is proposed in which the index is decomposed into an average growth process and an ergodic diffusion. The ergodic diffusion part of the model is not directly observable. A methodology is developed for estimating and testing the coefficient functions of this unobserved diffusion process. The estimation is based on the observations of the index process and uses semiparametric and non-parametric techniques. The testing is performed via the wild bootstrap resampling technique. The method is illustrated on S&P 500 index data.  相似文献   
89.
90.
In this paper, we study how risk-shifting incentives and the design of debt covenants are affected by the pattern of temporal resolution of uncertainty (TRU) in the underlying technology of the firm. We show that the extent of risk-shifting as well as the yield demanded on corporate debt are larger the later the resolution of uncertainty (thus providing one explanation for the empirical evidence of Reisz and Perlich (2006)). We allow for contracting based on verifiable information disclosed by the manager. In this context, we characterize optimal covenants restricting investment. The effects of these covenants on the firm's investment policy and corporate bond yields under different disclosure policies and patterns of TRU are studied. Empirical implications are derived and discussed.  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