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   620篇
  免费   22篇
财政金融   143篇
工业经济   49篇
计划管理   124篇
经济学   104篇
综合类   7篇
运输经济   6篇
旅游经济   12篇
贸易经济   118篇
农业经济   32篇
经济概况   47篇
  2023年   4篇
  2022年   2篇
  2021年   7篇
  2020年   10篇
  2019年   20篇
  2018年   19篇
  2017年   14篇
  2016年   19篇
  2015年   10篇
  2014年   22篇
  2013年   64篇
  2012年   32篇
  2011年   22篇
  2010年   25篇
  2009年   29篇
  2008年   41篇
  2007年   22篇
  2006年   27篇
  2005年   12篇
  2004年   10篇
  2003年   14篇
  2002年   20篇
  2001年   14篇
  2000年   15篇
  1999年   14篇
  1998年   11篇
  1997年   12篇
  1996年   13篇
  1995年   8篇
  1994年   11篇
  1993年   6篇
  1992年   6篇
  1991年   8篇
  1990年   3篇
  1989年   4篇
  1988年   5篇
  1987年   4篇
  1986年   2篇
  1985年   8篇
  1984年   7篇
  1983年   6篇
  1982年   8篇
  1981年   3篇
  1980年   7篇
  1979年   6篇
  1975年   2篇
  1970年   2篇
  1969年   3篇
  1968年   2篇
  1966年   2篇
排序方式: 共有642条查询结果,搜索用时 11 毫秒
151.
152.
Professional baseball operates a tiered system of talent development facilitated by alliances between Minor League Baseball (MiLB) clubs and higher status Major League Baseball (MLB) parent teams. This study applies management theory to advance the literature on MiLB demand modeling by proposing and testing a new set of demand determinants based on interorganizational alliance principles. Team executives at the AA level should be alert to the high cost of switching team alliances and of changing to a parent club in closer geographical proximity. At the AAA level, affiliation with a winning MLB club exerts a positive effect on AAA demand. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
153.
Traditional tradeoff models of corporate capital structure, although still featured prominently in finance textbooks and widely accepted by practitioners, have been criticized by financial economists for doing a poor job of explaining observed debt ratios. Moreover, the observed ratios are far less stable than what would be predicted by the standard tradeoff models. In a study published several years ago in the Review of Financial Studies, the authors of this article aimed to shed more light on the underlying forces governing capital structure decisions by analyzing a set of major changes in capital structure in which companies initiated large increases in leverage through substantial new borrowings. They then attempted to explain why these companies chose to increase leverage and how their capital structures changed during the years after the large debt issues. As summarized in this article, the authors' findings indicate, first of all, that the large debt financings were used primarily to fund major corporate investments—and not, for example, to make large distributions to shareholders. And the changes in leverage ratios that came after the debt offerings were driven far more by the evolution of the companies' realized cash flows and their investment opportunities than by deliberate or decisive attempts to rebalance their capital structures toward a stationary target. In fact, many of the companies chose to take on even more debt when faced with cash‐flow deficits, despite operating with leverage that was already well above any reasonable estimate of their estimated target leverage. At the same time, companies that generated financial surpluses used them to reduce debt, even when their leverage had fallen well below their estimated targets. Taken as a whole, the findings of the authors' study support the idea that unused debt capacity represents an important source of financial flexibility, and that preserving such flexibility—and making use of it when valuable investment opportunities materialize—may well be the critical missing link in connecting capital structure theory with observed corporate behavior.  相似文献   
154.
155.
Polynomial goal programming (PGP) is a flexible method that allows investor preferences for different moments of the return distribution of financial assets to be included in the portfolio optimization. The method is intuitive and particularly suitable for incorporating investor preferences in higher moments of the return distribution. However, until now, PGP has not been able to meet its full potential because it requires quantification of “real” preference parameters towards those moments. To date, the chosen preference parameters have been selected somewhat “arbitrarily”. Our goal is to calculate implied sets of preference parameters using investors’ choices of and the importance they attribute to risk and performance measures. We use three groups of institutional investors—pension funds, insurance companies, and endowments—and derive implied sets of preference parameters in the context of a hedge fund portfolio optimization. To determine “real” preferences for the higher moments of the portfolio return distribution, we first fit implied preference parameters so that the PGP optimal portfolio is identical to the desired hedge fund portfolio. With the obtained economically justified sets of preference parameters, the well-established PGP framework can be employed more efficiently to derive allocations that satisfy institutional investor expectations for hedge fund investments. Furthermore, the implied preference parameters enable fund of hedge fund managers and other investment managers to derive optimal portfolio allocations based on specific investor expectations. Moreover, the importance of individual moments, as well as their marginal rates of substitution, can be assessed.  相似文献   
156.
Abstract .  We develop an econometric model to estimate the impact of Electronic Vehicle Management Systems ( EVMS ) on the load factor ( LF ) of heavy trucks. This technology is supposed to improve capacity utilization. The model is estimated on the Quebec subsample of the 1999  National Roadside Survey . The  LF  is explained as a function of truck, trip, and carrier characteristics. We show that the use of  EVMS  results in an increase of 16 percentage points of  LF  on backhaul trips. However, we also find that there is a rebound effect on fronthaul movements, with a reduction of  LF  by about 7.6 percentage points.  相似文献   
157.
The now widely used term ‘Generation Rent’ reflects the growing phenomenon in the UK of young people living in the private rental sector for longer periods of their lives. Given the importance of leaving home in youth transitions to adulthood, this is a significant change. It is further critical given the rapid expansion of the private rented sector in the UK over recent decades and the more limited rights that private tenants have. This article draws on qualitative evidence to highlight the impact this has on young people's lives, and broader patterns of social‐spatial inequality. Our research highlights that, whilst young people retain long‐term preferences for homeownership, they nonetheless deconstruct this normalized ideal as a ‘fallacy of choice', given its unachievability in reality. Influenced by the work of Foucault, Bourdieu and Bauman, we emphasize how these dominant norms of housing consumption are in tension with objective reality, since young people's ability to become ‘responsible homeowners' is tempered by their material resources and the local housing opportunities available to them. Nonetheless, this does not exempt them from the ‘moral distinctions' being made, wherein renting is problematized and constructed as ‘flawed consumption'. These conceptual arguments advance international scholarly debates about the governance of consumption, offering a novel theoretical lens through which to examine the difficulties facing ‘Generation Rent’.  相似文献   
158.
A firm can increase product safety through ex ante investment and can remedy quality problems after sales. An increase in product liability raises returns to ex ante investment through higher consumer demand, but may also negatively affect the investment incentive due to more ex post remedial activities. The trade‐off between these “output” and “substitution” effects can result in an inverted U‐shaped relationship between product liability and ex ante investment. We find that the firm prefers full liability, but consumer surplus can be higher under partial liability. We further identify conditions under which full liability or partial liability is socially optimal.  相似文献   
159.
160.
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