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   1246篇
  免费   44篇
财政金融   302篇
工业经济   81篇
计划管理   215篇
经济学   215篇
综合类   11篇
运输经济   14篇
旅游经济   18篇
贸易经济   210篇
农业经济   102篇
经济概况   121篇
邮电经济   1篇
  2023年   7篇
  2022年   8篇
  2021年   7篇
  2020年   28篇
  2019年   23篇
  2018年   28篇
  2017年   31篇
  2016年   24篇
  2015年   18篇
  2014年   37篇
  2013年   113篇
  2012年   44篇
  2011年   47篇
  2010年   39篇
  2009年   59篇
  2008年   31篇
  2007年   41篇
  2006年   43篇
  2005年   46篇
  2004年   31篇
  2003年   49篇
  2002年   32篇
  2001年   31篇
  2000年   20篇
  1999年   32篇
  1998年   33篇
  1997年   36篇
  1996年   18篇
  1995年   19篇
  1994年   20篇
  1993年   17篇
  1992年   29篇
  1991年   20篇
  1990年   10篇
  1989年   14篇
  1988年   12篇
  1987年   15篇
  1986年   15篇
  1985年   13篇
  1984年   13篇
  1983年   13篇
  1982年   14篇
  1981年   12篇
  1980年   13篇
  1979年   14篇
  1978年   7篇
  1977年   10篇
  1976年   9篇
  1975年   8篇
  1972年   7篇
排序方式: 共有1290条查询结果,搜索用时 31 毫秒
31.
Using a stochastic frontier methodology that incorporates Bayesian statistics, this paper analyzes the cost efficiency of real estate investment trusts (REITs) by observing the deviations of the measured costs of individual REITs from a defined efficient cost frontier. Using 1995–1997 data, we extend the previous research in this area and measure REIT efficiency more precisely by isolating random measurement error from the overall deviations from the efficient cost frontier. We calculate the magnitude of each REIT's managerial inefficiency, the industry inefficiency, and returns to scale. In addition, we assess specific characteristics of REITs for their contribution to inefficiency by calculating the odds ratio that a REIT with a specific characteristic is more efficient than a REIT with an alternative characteristic. The results show that, for the years studied, REITs are relatively cost efficient with most REITs facing increasing returns to scale. Additionally, the REIT's use of debt and the REIT's management style significantly affect the cost performance of REITs during the aforementioned time period. Finally, diversification across property types, as measured, does not seem to influence REIT cost efficiency.  相似文献   
32.
We analyze a signaling game where firms' financing announcements convey private information about their prospects but a moral hazard problem exists in that managers may suboptimally invest. Consequently, the attempt to address an asymmetric information problem exacerbates moral hazard. The equilibrium recognizes both imperfect information problems. Additionally, the firm must determine how to allocate funds between two technologies differing in cash flow timing and managerial accessibility. We define an above-average firm's comparative advantage as that technology which is most dominant relative to a firm with lesser prospects and show that the resultant equilibria follow the lines of the firm's comparative advantage. Finally, we show that separation may be achieved costlessly, i.e., with no explicit signaling cost.  相似文献   
33.
Capital, corporate income taxes, and catastrophe insurance   总被引:2,自引:0,他引:2  
We provide estimates of the equity capital needed and the resulting tax costs incurred when supplying catastrophe insurance/reinsurance using a partial equilibrium model that incorporates a specific loss distribution for US catastrophe losses. After consideration of insurer investment in tax-exempt securities, tax loss carry-back/forward provisions, and personal taxes, our results imply that the tax costs of equity finance alone have a substantial effect on the cost of supplying catastrophe reinsurance. These results help explain a variety of industry developments that reduce tax costs. Also, when coupled with non-tax costs of capital, these results help explain the limited scope of catastrophe insurance/reinsurance.  相似文献   
34.
Market Effects of Recognition and Disclosure   总被引:1,自引:0,他引:1  
Our recognition and disclosure model reveals that price informativeness is determined by the interaction of the qualities of three information sources—the recognized amount, the disclosed information, and the information revealed by price—and accounting expertise acquisition. It also reveals that recognition of an accounting amount alters each of these, thereby affecting price informativeness. Perhaps surprisingly, we find that recognition of a highly unreliable accounting amount, rather than simply disclosing it, can result in greater price informativeness. Likewise, recognition of a highly reliable amount can result in lower price informativeness. Our findings suggest that, because of the effects of aggregation, basing recognition decisions on reliability alone is too simplistic. Reliability relative to relevance is key, not reliability per se. We also find that recognition and disclosure affect the coefficients in a regression of price on accounting amounts.  相似文献   
35.
Agricultural Extension: Good Intentions and Hard Realities   总被引:3,自引:0,他引:3  
What considerations lead policymakers to invest in agriculturalextension as a key public responsibility, and what factors andagency incentives explain differences in extension system performance?To help answer these questions, this article provides a frameworkoutlining farmers' demand for information, the public goodscharacter of extension services, and the organizational andpolitical attributes affecting the performance of extensionsystems. This conceptual framework is used to analyze severalextension modalities and their likely and actual effectiveness.The analysis highlights the efficiency gains that can come fromlocally decentralized delivery systems with incentive structuresbased on largely private provision, although in most poorercountries extension services will remain publicly funded.   相似文献   
36.
The traditional seven steps of selling is perhaps the oldest paradigm in the sales discipline. The seven steps model has served as a basic framework in sales training, personal selling textbooks, and teaching personal selling classes. Very little has changed in this framework since the turn of the 20th century. This article reviews the traditional seven steps of selling, examines transformative factors that have led to changes in each step, and presents an evolved seven steps process. While the traditional seven steps reflected a selling orientation on the part of a firm, the evolved selling process reflects more of a customer orientation in that the focus is on relationship selling—that is, securing, building, and maintaining long-term relationships with profitable customers.  相似文献   
37.
The movement of capital within insurance groups is important for understanding insolvency risk management, as well as regulatory policies regarding capital standards and group supervision. Panel data estimates indicate that, on average, a dollar decrease in performance (net income plus unrealized capital gains) when performance is negative is associated with a $0.26 increase in capital contributions to life insurers from other entities in the group, and that a dollar increase in performance when performance is positive is associated with a $0.56 increase in the amount of internal shareholder dividends paid by life insurers to other entities in the group. Moreover, the sensitivity of internal dividends to performance is higher during the financial crisis than the noncrisis period. Also, insurers with low (high) risk‐based capital ratios receive more (less) internal capital contributions than other insurers, holding other factors constant.  相似文献   
38.
We examine the relation between audit quality and audit firm tenure in the Iranian audit market, which is constrained by government policies that create intense competition for clients among many small audit firms. We develop arguments that these circumstances create cost pressures that entrench low audit quality and render auditors' plans more predictable to managers wishing to misstate their accounts. Using publicly available data for the audits of listed companies in Iran prior to mandatory audit firm rotation and the incidence of misstated financial reports identified by the Iranian Association of Certified Public Accountants Inspection Office, we find that the likelihood of a misstatement is lowest in the first two years of audit firm tenure. We also find that the likelihood of misstatement is not associated with the year preceding a mandatory audit firm rotation, suggesting outgoing auditor effort is not sensitive to the prospect of subsequent revelations of deficiencies. Although our results from a pre-mandatory rotation period show that frequent rotations appear to improve the financial reporting quality in our sample, we are wary of interpreting these results as support for the mandatory audit firm rotation policy in Iran. Rather, we suggest this is a peculiar consequence of deficiencies in audit quality inherent in the Iranian market.  相似文献   
39.
This paper proposes two new weighting schemes that average forecasts based on different estimation windows in order to account for possible structural change. The first scheme weights the forecasts according to the values of reversed ordered CUSUM (ROC) test statistics, while the second weighting method simply assigns heavier weights to forecasts that use more recent information. Simulation results show that, when structural breaks are present, forecasts based on the first weighting scheme outperform those based on a procedure that simply uses ROC tests to choose and forecast from a single post-break estimation window. Combination forecasts based on our second weighting scheme outperform equally weighted combination forecasts. An empirical application based on a NAIRU Phillips curve model for the G7 countries illustrates these findings, and also shows that combination forecasts can outperform the random walk forecasting model.  相似文献   
40.
We use expert clinical and public health opinion to estimate likely changes in the prevention and treatment of important disease conditions and how they will affect future life expectancy. Focus groups were held including clinical and public health faculty with expertise in the six leading causes of death in the United States. Mortality rates and life tables for 2040 were derived by sex and age. Life expectancy at age 20 and 65 was compared to figures published by the Social Security Administration and to estimates from the Lee-Carter method. There was agreement among all three approaches that life expectancy at age 20 will increase by approximately one year per decade for females and males between now and 2040. According to the clinical experts, 70% of the improvement in life expectancy will occur in cardiovascular disease and cancer, while in the last 30 years most of the improvement has occurred in cardiovascular disease. Expert opinion suggests that most of the increase in life expectancy will be attributable to the already achieved reduction in smoking rates, especially for women.  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