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排序方式: 共有271条查询结果,搜索用时 31 毫秒
61.
The paper analyzes the relationship between stock prices and fundamentals for a large sample of US stocks in the last 10 years using a random coefficient model. Heterogeneity and omitted variable bias are properly taken into account with model coefficients being allowed to vary across time and industries. The random coefficient model allows to track waves of reliance on analysts’ forecasts and nonfundamental stock price components across time and clearly identifies the growth of the nonfundamental component in the long 1991–2000 swing.   相似文献   
62.
The paper considers two main cases of how the creative arts can inform a greater appreciation of human dignity. The first case explores a form of theater, Commedia dell’Arte that has deep roots in Italian culture. The second recounts a set of theater exercises done with very minimal direction or self-direction in executive education and MBA courses at the Darden School, University of Virginia, in the United States. In both cases we highlight how the creative arts can be important for promoting human dignity in organizations, and how they can lead to a more authentic conversation about values, ethics, and meaning.  相似文献   
63.
This paper seeks to assess to what extent e-government enables accountability and transparency in EU local governments. It also provides an overall view about how local governments are implementing ICTs initiatives to bring citizens closer to governments. Although the mere capacity of the Internet for the dissemination of information improves accountability and makes benchmarking easier, our results show that the expected benefits are far from being achieved because e-government projects are still in the early stages. The results also show that, at present, ICTs have not had a dramatic impact on EU local government accountability.  相似文献   
64.
This article aims to analyse the objectives and the techniques of privatization and the valuation methods applied in the state-owned company privatization processes in order to determine the coherence between the formal privatization objectives stated by governments and the techniques and the valuation methods chosen to carry out the sale of state-owned companies. From the results of an international survey carried out by the International Organization of Supreme Audit Institutions (INTOSAI), we study the privatization practices in three groups of countries: the most developed OECD countries, Eastern European countries and developing countries. While the reasons that have motivated state-owned company privatizations all over the world are quite similar, the techniques of privatization used by these three groups are different with regard to the purpose of the privatization, the ways of carrying it out and the methods of fixing the sale price.  相似文献   
65.
The present paper questions the financial efficiency of the most used market portfolio proxies in Spain and Mexico (IBEX35 and IPC) in order to determine if these can be considered a proper market portfolio proxy. The paper questions if they can be used as “neutrals”, according to Black & Litterman (1992) proposals in portfolio management. For this purpose, two discrete event simulations that use the Markowtiz-Tobin-Sharpe-Linter model (Markowitz, 1987, p.5) are performed with monthly data of the stock members of these indices in a February 2001 to December 2010 time window. The results are compared by using the Sharpe ratio (Sharpe, 1966) and show that the equilibrium assumptions in the market do not hold, leading to conclude that these market portfolio proxies are inefficient.  相似文献   
66.
We analyze urban congestion management policies through numerical analysis of a simple model that: allows users to choose between car, bus or an outside option (biking); consider congestion interactions between cars and buses; and allow for optimization of frequency, vehicle size, spacing between stops and percentage of capacity to be dedicated to bus lanes. We compare resulting service levels, social welfare and consumer surplus for a number of different policies and find that: (i) dedicated bus lanes is a better stand-alone policy than transit subsidization or congestion pricing. The latter is marginally better than subsidization but has a negative impact in consumer surplus. (ii) Efficient transit subsidies are quite large since in many cases first-best transit price is negative; establishing dedicated bus lanes or implementing congestion pricing render subsidies unnecessary for high demand levels. (iii) Both subsidization and dedicated bus lanes would count with public support while congestion pricing would probably encounter opposition. (iv) Transit subsidies and/or congestion pricing do not induce large changes on optimal bus size, frequency, circulation speeds and spacing between stops in mixed-traffic conditions: dedicated bus lanes do. (v) In all cases analyzed, revenues from congestion pricing are enough to cover transit subsidies; the optimal percentage of capacity that should be devoted for bus traffic is around one third.  相似文献   
67.
Conflict between and within countries can have lasting health and economic consequences, but identifying such effects can be empirically challenging. This paper uses household survey data from Eritrea to estimate the effect of exposure to the 1998-2000 Eritrea-Ethiopia war on children's health. The identification strategy exploits exogenous variation in the conflict's geographic extent and timing and the exposure of different birth cohorts to the fighting. The unique survey data include details on each household's migration history, which allows us to measure a child's geographic location during the war and without which war exposure would be incorrectly classified. War-exposed children have lower height-for-age Z-scores, with similar effects for children born before or during the war. Both boys and girls who are born during the war experience negative impacts due to conflict. Effects are robust to including region-specific time trends, alternative conflict exposure measures, and mother fixed effects.  相似文献   
68.
This paper explores the political economy at the time of the 2012 tax reform, which paved the way for a radical tax increase in 2014. Both were an explicit response to demands to improve public education. As opposed to the 2014 reform, the 2012 tax adjustment was an unplanned decision made in the wake of a pact of long-term fiscal stability during the government's last year in office and was partially negotiated with student associations and pressure groups. We hypothesise that the existing institutions were not strong enough to meet emerging social demands through formal channels. We will show evidence for the hypothesis that the government's incorporation of students’ demands in its agenda was mainly a response to the role of the media, the fact that it is not difficult for students to organise themselves and express their demands, the support of students’ families and the ruling government's fear of missing out on a second term in office.  相似文献   
69.
This study uses detailed longitudinal matched employer–employee data to examine the impact of entrepreneurial experience on job assignments, careers, and wages. The results suggest that there are significant differences in career mobility between former business owners and workers who were always wage employees. Former business owners enter firms at higher job levels and progress faster up the hierarchy than wage employees without entrepreneurial experience. The majority of the former business owners find jobs in small firms. The return to business ownership experience is lower than the return to wage employee experience, thus suggesting that the labor market imposes a penalty for business ownership experience.  相似文献   
70.
This paper studies the trade balance dynamics in the G-7 countries plus Spain. We estimate a SVAR model to identify three different shocks: real supply shocks, real demand disturbances and nominal shocks. A microfounded stochastic open-economy model is built to derive the long-term identification restrictions. Estimates show that real demand shocks explain most of the variability of trade imbalances, whereas, contrary to previous findings, nominal shocks play a very limited role. These results are consistent with the predictions of a widely set of open-economy models and illustrate that demand policies are the main responsible of trade imbalances.  相似文献   
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