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   598篇
  免费   42篇
财政金融   108篇
工业经济   54篇
计划管理   92篇
经济学   148篇
综合类   12篇
运输经济   13篇
旅游经济   12篇
贸易经济   115篇
农业经济   35篇
经济概况   49篇
邮电经济   2篇
  2023年   7篇
  2022年   2篇
  2021年   6篇
  2020年   16篇
  2019年   24篇
  2018年   42篇
  2017年   19篇
  2016年   26篇
  2015年   14篇
  2014年   34篇
  2013年   78篇
  2012年   36篇
  2011年   34篇
  2010年   30篇
  2009年   43篇
  2008年   32篇
  2007年   20篇
  2006年   24篇
  2005年   17篇
  2004年   12篇
  2003年   7篇
  2002年   16篇
  2001年   6篇
  2000年   4篇
  1999年   11篇
  1998年   8篇
  1996年   6篇
  1995年   4篇
  1994年   6篇
  1993年   7篇
  1992年   8篇
  1991年   2篇
  1990年   2篇
  1988年   2篇
  1987年   2篇
  1986年   4篇
  1985年   2篇
  1984年   2篇
  1981年   3篇
  1972年   1篇
  1971年   2篇
  1970年   1篇
  1969年   1篇
  1966年   1篇
  1965年   1篇
  1964年   2篇
  1963年   2篇
  1959年   2篇
  1958年   1篇
  1930年   1篇
排序方式: 共有640条查询结果,搜索用时 109 毫秒
91.
Highly risk-averse retirees are generally advised to adopt a fixed spending strategy such as the 4% withdrawal rule. To prevent the premature depletion of a retirement portfolio, the rule attempts to proxy as the ‘safe withdrawal rate’. But a constant withdrawal rate means that retirees accumulate unspent surpluses when markets outperform and face spending shortfalls when markets underperform. While a safe withdrawal rate can prevent spending shortfalls, the opportunity cost of unspent surpluses associated with this strategy can be extreme. We apply a range of basic investment decision rules to a retirement portfolio applying various withdrawal rates and examine the probability of shortfalls over a retirement horizon. Using a block bootstrap simulation technique, we examine decision rules relating to stock and bond investments. Our results show that retirement portfolios with a bias towards stocks coupled with a decision rule that sources withdrawals from bonds and cash before stocks significantly outperforms alternative withdrawal strategies, despite the inherent increase in volatility. This finding is in direct contrast to the safe withdrawal rate conventions used in contemporary financial advice models.  相似文献   
92.
Dye [J Account Res 23 (1985) 123] showed that the optimal disclosure policy, when a manager is randomly endowed with perfect private information, is upper tailed, i.e., the manager only discloses firm value above an appropriate cutoff level. We interpret this strategically as an optimal exercise by management of the embedded formal option to report value. Given any disclosure cutoff level, we value the corresponding option using contingent claims analysis. It is shown that the Dye disclosure cutoff value maximizes the formal option value. We find it to be the minimum possible conditional valuation (conditioned by non-disclosure) which is thus consistent with the intuition that investors should value conservatively. We show how the Dye cutoff can be interpreted as a strike price in a ‘protective put’ which offers a shield against risk of disclosure of low value. The strategic analysis is further extended by allowing the probability level that the manager is informed to be a choice variable. We show that the manager will never choose to be perfectly endowed with information, and is likely to be more endowed than unendowed. We also present a simple worked example which shows how the total value of the firm changes once the Dye option is formally incorporated.
Miles B. GietzmannEmail:
  相似文献   
93.
Using sorting procedures and cross-sectional tests, we investigate the long-run post-IPO performance and its sources in the Central and Eastern European (CEE) markets. We examine over 1100 stocks from 11 CEE countries for the period 2002–2014. We find that “old stocks” perform significantly better than “young stocks”, but only when the market beta is the sole risk factor considered. After accounting for the size and value effects, the IPO firms perform neither better nor worse than non-issuing companies. The sources of the initial low B/M ratios of debuting companies may lie in time-varying financial quality. The market newcomers are financially healthier than their older counterparts. However, over 2–5 years the fundamentals deteriorate and the financial standing regresses to the mean.  相似文献   
94.
This paper analyzes why gold mining firms use options instead of linear strategies to hedge their gold price risk. Consistent with financial constraints based theories, the largest and least financially constrained firms are the most likely to hedge with insurance strategies (put options), while more constrained firms finance the purchase of puts by selling calls (collars). The most financially constrained firms use strategies that involve selling calls. Firms with large investment programs are also more likely to use insurance rather than linear strategies. Firms’ hedging instrument choices are also correlated with current market conditions, suggesting that managers’ market views partially drive hedging instrument choices.  相似文献   
95.
Much research has investigated the differences between option implied volatilities and econometric model-based forecasts. Implied volatility is a market determined forecast, in contrast to model-based forecasts that employ some degree of smoothing of past volatility to generate forecasts. Implied volatility has the potential to reflect information that a model-based forecast could not. This paper considers two issues relating to the informational content of the S&P 500 VIX implied volatility index. First, whether it subsumes information on how historical jump activity contributed to the price volatility, followed by whether the VIX reflects any incremental information pertaining to future jump activity relative to model-based forecasts. It is found that the VIX index both subsumes information relating to past jump contributions to total volatility and reflects incremental information pertaining to future jump activity. This issue has not been examined previously and expands our understanding of how option markets form their volatility forecasts.  相似文献   
96.
In this article we present the heuristic-systematic model (Chaiken, 1980, 1987; Chaiken, Liberman, & Eagly, 1989) as a theoretical framework for research on product warning labels. The model proposes two fundamental information processing modes. When processing systematically, perceivers access, scrutinize, and integrate all useful information to reach their judgment. In contrast, heuristic processing involves the use of learned knowledge structures in the form of simple decision rules, or cognitive heuristics, to reach judgments. In addition to proposing when either or both of these processing modes will occur, and with what effect, the model also specifies three different underlying types of processing motivations, termed accuracy, defense, and impression, each with implications for information processing and judgments. This model is used to explain past findings on the effectiveness of product warning labels, and to suggest new areas for future research as well as practical guidelines for the design of warning labels. © 1998 John Wiley & Sons, Inc.  相似文献   
97.
Business-to-business marketing research has a long tradition of using qualitative case studies. Industrial Marketing Management (IMM) has actively encouraged the use of case methods, resulting in many important theoretical advances in the field. However, debate still rages over what constitutes “good case research”. This article addresses this issue from a positivist standpoint. We examine the how authors address issues of quality in the 105 qualitative case studies published in IMM between 1971 and 2006. Four periods were identified: 1971-1979, 1980-1989, 1990-1999, and 2000-2006. Findings demonstrate that, from a positivist viewpoint, there has been a steady improvement in how authors addressed issues of research quality in published qualitative case studies. Suggestions for changes in data presentation, reviewer expectations, the IMM reviewer feedback form, and the use of web-based appendices containing data pertinent to reader judgments of research quality are suggested.  相似文献   
98.
This article provides a review of what we know, what we do not know, and what we need to know about the relationship between industrial clusters and corporate social responsibility (CSR) in developing countries. In addition to the drivers of and barriers to the adoption of CSR initiatives, this study highlights key lessons learned from empirical studies of CSR initiatives that aimed to improve environmental management and work conditions and reduce poverty in local industrial districts. Academic work in this area remains embryonic, lacking in empirical evidence about the effects of CSR interventions on the profitability on local enterprises, workers, and the environment. Nor do theoretical frameworks offer clear explanations of the institutionalization and effects of CSR in local industrial districts in the developing world. Other key limitations in this research stream include an excessive focus on export-oriented industrial clusters, the risk that CSR becomes a form of economic and cultural imperialism, and the potential for joint-action CSR initiatives in clusters of small and medium-sized enterprises to offer a new form of greenwashing. From this review, the authors develop a theoretical model to explain why CSR has not become institutionalized in many developing country clusters, which in turn suggests that the vast majority of industrial clusters in developing countries are likely to engage in socially irresponsible behavior.  相似文献   
99.
100.
Using an establishment‐level panel dataset for the Malaysian manufacturing industries for 2000–2004, we argue that differences in the proxies and degrees of foreign shareholdings in measuring foreign presence lead to opposite signs and/or significance of spillover effects. The results show significant evidence of positive productivity spillovers to local establishments in the same industry, based on a broad measure of foreign presence. However, there is no evidence of positive spillover when employment share is used as a proxy for foreign presence. Furthermore, significant negative spillover effects are related to higher employment shares of wholly foreign‐owned establishments. Although there is no significant difference in labor productivity between wholly foreign‐owned and locally‐owned establishments, both majority and minority foreign‐owned establishments have significantly lower levels of labor productivity than locally‐owned establishments in Malaysia.  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