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   693篇
  免费   14篇
财政金融   136篇
工业经济   25篇
计划管理   99篇
经济学   225篇
运输经济   4篇
旅游经济   11篇
贸易经济   131篇
农业经济   39篇
经济概况   35篇
邮电经济   2篇
  2020年   6篇
  2019年   16篇
  2018年   13篇
  2017年   14篇
  2016年   21篇
  2015年   9篇
  2014年   12篇
  2013年   71篇
  2012年   17篇
  2011年   29篇
  2010年   21篇
  2009年   18篇
  2008年   16篇
  2007年   18篇
  2006年   17篇
  2005年   16篇
  2004年   17篇
  2003年   19篇
  2002年   13篇
  2001年   9篇
  2000年   8篇
  1999年   11篇
  1998年   7篇
  1997年   14篇
  1996年   14篇
  1994年   6篇
  1993年   10篇
  1992年   5篇
  1991年   9篇
  1990年   11篇
  1989年   8篇
  1988年   12篇
  1987年   13篇
  1986年   8篇
  1985年   13篇
  1984年   14篇
  1983年   14篇
  1982年   13篇
  1981年   11篇
  1980年   13篇
  1979年   10篇
  1978年   9篇
  1977年   12篇
  1975年   5篇
  1973年   5篇
  1972年   7篇
  1971年   6篇
  1970年   5篇
  1936年   5篇
  1934年   4篇
排序方式: 共有707条查询结果,搜索用时 734 毫秒
61.
This study tackles the puzzle of why increasing entrepreneurial experience does not always lead to improved financial performance of new ventures. We propose an alternate framework demonstrating how experience translates into expertise by arguing that the positive experience–performance relationship only appears to expert entrepreneurs, while novice entrepreneurs may actually perform increasingly worse because of their inability to generalize their experiential knowledge accurately into new ventures. These negative performance implications can be alleviated if the level of contextual similarity between prior and current ventures is high. Using matched employee–employer data of an entire population of Swedish founder-managers between 1990 and 2007, we find a non-linear relationship between entrepreneurial experience and financial performance consistent with our framework. Moreover, the level of industry, geographic, and temporal similarities between prior and current ventures positively moderates this relationship. Our work provides both theoretical and practical implications for entrepreneurial experience—people can learn entrepreneurship and pursue it with greater success as long as they have multiple opportunities to gain experience, overcome barriers to learning, and build an entrepreneurial-experience curve.  相似文献   
62.
Based on the work of Suzuki, we consider a generalization of Merton’s asset valuation approach in which two firms are linked by cross-ownership of equity and liabilities. Suzuki’s results then provide no arbitrage prices of firm values, which are derivatives of exogenous asset values. In contrast to the Merton model, the assumption of lognormally distributed assets does not result in lognormally distributed firm values, which also affects the corresponding probabilities of default. In a simulation study we see that, depending on the type of cross-ownership, the lognormal model can lead to both over- and underestimation of the actual probability of default of a firm under cross-ownership. In the limit, i.e. if the levels of cross-ownership tend to their maximum possible value, these findings can be shown theoretically as well. Furthermore, we consider the default probability of a firm in general, i.e. without a distributional assumption, and show that the lognormal model is often able to yield only a limited range of probabilities of default, while the actual probabilities may take any value between 0 and 1.  相似文献   
63.
Kapitel I. Bibliographisches

Die versicherungstechnische Litteratur hat sich verhältnismässig wenig mit den aktuariell-finanziellen Fragen befasst. Bemerkenswert ist es deshalb, dass die meisten von den bis jetzt abgehaltenen neun internationalen Aktuarkongressen die eine oder die andere Frage aus oben erwähntem Gebiet in ihrem Programm aufgenommen haben. So z. B. beschäftigte sich der erste Kongress, der 1895 in Brüssel tagte, mit dem Gegenstand: “Des mesures qui pourraient être prises par les institutions qui contractent des engagements à long terme, pour se premunir contre les conséquences des variations du taux d intérêt.” Der Kongress im Jahre 1900 in Paris hatte in seinem Programm das Thema: “Méthodes à employer pour evaluer les titres mobiliers compris dans l'actif d'une Société quelconque.” Bei dem New Yorker Kongress 1903 wurde die Prage über “The Probable Future Course of the Rate of Interest” erörtert. Dem Wiener Kongress 1909 war die Frage über “Kapitalsanlagen der Versicherungsgesellschaften mit besonderer Berücksichtigung der modernen Entwickelung” zur Behandlung vorgelegt. Das Programm des Londoner Kongresses 1927 enthielt das Thema “Currency Depreciation as affecting Life Assurance Contracts”.  相似文献   
64.
65.
66.
We consider a robust version of the classic problem of optimal monopoly pricing with incomplete information. In the robust version, the seller faces model uncertainty and only knows that the true demand distribution is in the neighborhood of a given model distribution. We characterize the pricing policies under two distinct decision criteria with multiple priors: (i) maximin utility and (ii) minimax regret. The equilibrium price under either criterion is lower then in the absence of uncertainty. The concern for robustness leads the seller to concede a larger information rent to all buyers with values below the optimal price without uncertainty.  相似文献   
67.
The collapse of communism, the success of the US economy and the rise of the internet have led many to argue that the rest of the world should adopt American capitalism. This article uses evidence from the ancient Mediterranean and Middle East to argue that the most successful form of capitalism in each area (and era) depends on the context of the time, the culture of the people and the history of the region.  相似文献   
68.
One approach to trade liberalization is the zero-for-zero sectoral approach which involves agreements to eliminate export subsidies, import tariffs, and export taxes in a sector. This article provides an assessment of the impact of border trade liberalization on oilseeds and oilseed products trade. The analysis suggests that under all of the scenarios examined, North American oilseed crushers and oilseed producers gain from trade liberalization. The exact size and the distribution of these gains depends on the number of countries that participate in trade liberalization. The results suggest that the United States and Canada would gain from the adoption of the zero-for-zero proposal.  相似文献   
69.
70.
A set of improvements were introduced on a railway line in the south of Sweden in January 1992, including a new train concept, improved timetable and lower fares. The new train replaced a combination of old rail cars and standard coaches (bus). Furthermore, 18 months later, a new high comfort coach (bus) service was introduced as a complement to the train timetable to increase the number of departures. Forecasts from a national four-step model system, based on Revealed Preference data, which did not cover explanatory factors like mode concept, comfort, mode image, was made and compared with a forecast based on stated preference data choice model. Both type of forecasts were compared to travel statistics. Stated Preference data have been collected from car drivers, coach and train passengers. The set of improvements have been included in the SP alternatives presented to the subjects. A structured logit model, a regression model and a linear programming model are compared. Unstructured and structured logit models are compared. Logit models have been estimated and used to form a mode choice model which predicts the changes in market shares between the train and car. The choice model forecast coincide, accidentally, with actual demand 8–9 months after the introduction of the set of improvements (a 40% increase in journeys). The set of improvements, including the new train service, has proven to be a success with more than 100% increase in travel after only two years of operation. Differences in estimated logit models for 1991 and 1992 are explained as partly due to asymmetry effects and partly to shortcomings in the SP data collection technique. Logit model estimates for train and coach are compared. The value of high standard coach service, running in parallel to the train, is estimated. The new coach gained few new passengers and also a much lower monetary value than the train by both train and bus passengers.  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