全文获取类型
收费全文 | 131篇 |
免费 | 7篇 |
专业分类
财政金融 | 21篇 |
工业经济 | 5篇 |
计划管理 | 26篇 |
经济学 | 29篇 |
运输经济 | 4篇 |
旅游经济 | 5篇 |
贸易经济 | 31篇 |
农业经济 | 2篇 |
经济概况 | 8篇 |
邮电经济 | 7篇 |
出版年
2023年 | 2篇 |
2022年 | 1篇 |
2021年 | 4篇 |
2020年 | 5篇 |
2019年 | 5篇 |
2018年 | 6篇 |
2017年 | 3篇 |
2016年 | 4篇 |
2015年 | 6篇 |
2014年 | 5篇 |
2013年 | 18篇 |
2012年 | 10篇 |
2011年 | 5篇 |
2010年 | 9篇 |
2009年 | 8篇 |
2008年 | 8篇 |
2007年 | 6篇 |
2005年 | 4篇 |
2004年 | 3篇 |
2003年 | 5篇 |
2002年 | 2篇 |
2001年 | 1篇 |
2000年 | 3篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1982年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有138条查询结果,搜索用时 656 毫秒
101.
Astrid Ayala 《European Journal of Finance》2013,19(18):1861-1884
ABSTRACTThe precise measurement of the association between asset returns is important for financial investors and risk managers. In this paper, we focus on a recent class of association models: Dynamic Conditional Score (DCS) copula models. Our contributions are the following: (i) We compare the statistical performance of several DCS copulas for several portfolios. We study the Clayton, rotated Clayton, Frank, Gaussian, Gumbel, rotated Gumbel, Plackett and Student's t copulas. We find that the DCS model with the Student's t copula is the most parsimonious model. (ii) We demonstrate that the copula score function discounts extreme observations. (iii) We jointly estimate the marginal distributions and the copula, by using the Maximum Likelihood method. We use DCS models for mean, volatility and association of asset returns. (iv) We estimate robust DCS copula models, for which the probability of a zero return observation is not necessarily zero. (v) We compare different patterns of association in different regions of the distribution for different DCS copulas, by using density contour plots and Monte Carlo (MC) experiments. (vi) We undertake a portfolio performance study with the estimation and backtesting of MC Value-at-Risk for the DCS model with the Student's t copula. 相似文献
102.
103.
Astrid Schobert 《Heilberufe》2008,60(4):68-70
Zusammenfassung Job-Food — Das kennt jeder, der in einem Pflegeberuf arbeitet: St?ndige Hektik, der Terminkalender platzt aus allen N?hten,
der Schichtwechsel naht und dann f?llt auch noch ein Kollege aus – da bleibt einfach keine Zeit zum Essen. Doch das muss nicht
sein. 相似文献
104.
105.
In Belgium, several cities have been experimenting with ‘free’ public transport based on the concept of a third payer system. This study explores the modal shift potential of this measure for commuters by means of a large-scale survey. The results indicate that there is still a margin for a further modal shift, but in order to make public transport more attractive to car users, the price paid by the commuter should be lowered, the quality and capacity of the public services should be improved and the mobility policy of the companies should be adjusted in favour of public transport. 相似文献
106.
In this paper, we investigate how the wage processes of women who are well established in the labour market are affected by having children. We estimate a flexible fixed‐effects wage regression model extended by post‐childbirth fixed effects. We use register data on West Germany, and we exploit the expansionary family policy during the late 1980s and 1990s for identification. On their return to work after childbirth, the wages of mothers drop by 3–5.7 per cent per year of leave. We find negative selection back to full‐time work after childbirth. We discuss the policy implications regarding statistical discrimination and the results concerning the family gap. 相似文献
107.
This article studies the evolution of quarterly government Total Deficit (TD) to Gross Domestic Product (GDP) and debt to GDP ratios of seven Central and Eastern European member states (CEEC-7) of the European Union over the period 2000 Q1 to 2011 Q2. Alternative unit root tests are applied to identify the number and date(s) of structural break(s) in the fiscal ratios. The breakpoint date(s) are estimated endogenously. The best performing unit root test is determined by the adjusted R-squared metric. The level and trend of fiscal ratios are estimated by using breaking trend regression models. Unit root tests performed for the period 2000 Q1 to 2007 Q4 identify the number and date(s) of structural break(s) in fiscal variables before the global economic crisis. Unit root tests and breaking trend regressions are estimated for total Eurozone TD to GDP and debt to GDP to compare the evolution of total Eurozone fiscal ratios with those of each CEEC-7. 相似文献
108.
Supply Chain Risk Management has become a key concern for organizations, which is even further emphasized by the current economic and financial crisis. Against this background, this paper investigates successful approaches and experiences by companies in dealing with this new reality, especially as it concerns the supply side. Using in-depth case studies conducted among eight European enterprises, we develop a set of propositions about how companies manage supply risks in financial crises, highlight how their risk management approaches have shifted, and illustrate how they are related to Enterprise Risk Management. Our framework is further differentiated based on whether firms are predominantly engaged in manufacturing or services—a factor influencing how supply chain risk is managed. Transaction cost economics serves as our main theoretical anchor. By rigorously grounding our research in both theory and empirical evidence, we provide valuable insight for both academia and practice. 相似文献
109.
110.
This article investigates the real convergence of 17 Latin American countries to the US economy for the period 1950 to 2011. Time series methods are used to test stochastic and β-convergence. These methods include the possibility of one or two structural changes. The results show that when endogenous structural changes are considered several Latin American countries exhibit stochastic convergence. Nevertheless, real convergence to the US is found only for three Latin American countries: Chile, Costa Rica and Trinidad and Tobago, with these countries also presenting evidence of stochastic and β-convergence. 相似文献