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31.
Journal of Quantitative Economics - In this paper we provide a self-contained exposition of the problem of sustaining a constant consumption level in a Ramsey model. Our focus is on the case in... 相似文献
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33.
Arnab Majumdar Washington Yotto Ochieng James Bentham Martyn Richards 《Journal of Air Transport Management》2005,11(6):35
Reliable estimation of en-route sector capacity is important, especially in high-density traffic areas where controller workload is the driver. En-route sector capacity is commonly estimated using fast-time computer simulation techniques employing models of controller workload. This paper analyses the methodologies employed by a number of countries in Europe and North America, to estimate the capacity of en-route airspace. The data used was obtained from airspace planners and managers. The survey involved interviews using pre-designed questionnaires. The results show that there are two main models used in the simulation of controller workload, and that there is considerable variation both in their application and controller involvement in the capacity estimation process. 相似文献
34.
Many emerging markets have undertaken significant financial sector reforms, especially in their banking sectors, that are critical for both financial development and real economic activity. In this paper, we investigate the success of banking reforms in India where significant banking reforms were implemented during the 1990s. Using the argument that well-functioning credit markets would reflect a credit channel for monetary policy at work, we test whether a change in monetary policy has a predictable impact on borrowing behaviour of several types of firms, including business group affiliated, unaffiliated private firms, state-owned firms and foreign firms. The empirical results suggest that unaffiliated private firms have the most vulnerable to monetary policy stance during tight policy regimes. We also find that during tight monetary policy regimes, bank credit of smaller firms is more sensitive to changes in the interest rate than that of large firms. In an easy money regime, monetary policy and the associated change in interest rate does not affect change in bank credit, change in total debt and the proportion of bank credit in total debt for any of the firms. We discuss the policy implications of the findings. 相似文献
35.
We study a market search equilibrium with aggregate uncertainty, private information and heterogeneous beliefs that are initially optimistic. Despite these biased beliefs, it is shown that all optimistic equilibria converge to perfect competition in the limit as the time between matches tends to 0. 相似文献
36.
We examine the determinants of performance of 68 Indian state-owned enterprises in the manufacturing sector for a five-year period: 1987 to 1991. Relative performance is determined using data envelopment analysis, with variations in performance patterns subsequently explained using regression analysis. We note that the performance of firms in the Indian state-owned sector is characterized by both, low performance, as well as significant and systematic variations in the performance parameters. Size is positively associated and age negatively associated with efficiency. Further, economic liberalization and reforms aimed at improving the performance of state-owned firms induces efficiency gains over time. This heterogeneity within the state-owned sector has policy implications, which we discuss. In countries which have privatized large numbers of their state-owned firms, it is often the larger establishments which have been sold to the public. The state-owned firms in the manufacturing sector that can be candidates for privatization are the smaller and older manufacturing firms. These firms may also be easier to dispose of to private investors. This finding reinforces our central thesis that firm-level analysis within the state-owned sector is useful and important for generating pragmatic policy guidelines. 相似文献
37.
Consider two departments of a government each serving customers of a particular type. We explore conditions under which a reorganization leading to both departments serving both types of customers leads to an enhancement of "efficiency" defined in terms of the expected queue size in a stochstic equilibrium. 相似文献
38.
Sumit Majumdar 《Economics of Innovation and New Technology》2013,22(3):283-293
This article examined the relationship between the adoption of technology, via the deployment of broadband, on revenue growth, which is an important measure of financial performance, of the deploying firms using panel data for all of the major local exchange carriers in the US telecommunications industry from 1988 to 2001. The sector is an important network market context where the implications of deployment have substantial salience. The results show a positive relationship between broadband deployment and carriers’ revenue growth. This result implies that encouraging the adoption and deployment of broadband technologies in addition to the benefits of the consumers and firms at the receiving end of the new technology create the potential for better financial performance for the deploying firms. These results also imply that steps that can be taken to provide incentives that will hasten the further deployment of broadband will result in gains in financial performance within the sector. 相似文献
39.
This article evaluates the organizational characteristics, defined as returns to scale and most productive scale size, for a sample of 67 Indian state-owned enterprises in comparison with 63 private and 27 foreign-owned enterprises. State-owned units suffer from decreasing returns to scale with diseconomies being associated with their large size. The average most productive scale size of the state-owned firms is considerably smaller than average actual size, establishing the need for a break-up of existing units into many smaller units so as to gain efficiencies. A policy of restructuring these organizations before privatization will enable privatization to be eventually more successful. 相似文献
40.
In this paper we decompose a traditional measure for firm's performance, return on sales, into four components that capture the impact of productivity, price recovery, product mix and capacity utilization, respectively, on a firm's profitability. The new measures are used as an illustration to explain changes in the performance of firms in the US telecommunications industry following deregulation. Changes in the overall profitability margin of these firms are explained by substantial but offsetting changes in their productivity, price recovery ability, product-mix maximization and capacity utilization, that have occurred as a consequence of deregulation. The new measures enable us not only to illustrate relative differences between firms in a given cross-section but also to shed light on how changes take place over time in the different components that underlie firms' profitability. 相似文献