Economies of scale and density in local telephone networks

The production structure of local telephone networks is analyzed with a translog cost function estimated with cross-sectional data on a sample of 44 small local exchange companies (LECs). The output vector includes the number of stations served and the service territory area. Economies of scale are exhausted beyond 992 stations with growth through territorial expansion. The threshold for expansion through densification is 51,053 stations. These results suggest that the optimal LEC's size is small, and that competition may be the most efficient form of production organization for medium to large markets in rural and low-density urban settings.     

Economies of scale in advertising

In this article a flexible quadratic model is used to generate sales elasticity estimates for own advertising, competitor advertising and media concentration. On the basis of these estimates, moderate and declining economies of scale in advertising are indicated for firms at the highest end of the advertising per firm distribution. No advertising economies, however, are obvious for the levels of advertising common across the broad spectrum of US industry. Thus, any competitive harm due to economies of scale in advertising would seem quite minor.     

Economies of scale in the Mexican automotive sector

Recent growth of the Mexican motor vehicle industry has sparked a great deal of controversy on both sides of the U.S.-Mexico border regarding the potential effects of the North American Free Trade Agreement. One of the key factors affecting the future competitiveness of the Mexican motor vehicle industry relative to U.S. producers is whether the Mexican firms can exploit economies of scale as their output expands. This article investigates that possibility as well as the direct and cross-price elasticities of demand for the inputs by estimating translog cost functions for the Mexican motor vehicle and autoparts industries. The results are consistent with the hypotheses that substantial economies of scale remain to be exploited by the Mexican motor vehicle industry, but that the autoparts industry is operating with diseconomies of scale. However, the lack of investment in new technology and X-inefficiency on the part of the autoparts firms may have been partially responsible for the latter finding.     

Economies of scale and organization efficiency in banking

Previous studies attempting to assess economies of scale in banking firms have largely relied upon cost functions. The profit-function approach enjoys several important advantages over the cost-function method, consequently that is the approach used in this study. A risk-adjusted profit function estimates economies of scale of unit and branch banks; and the effects of bank holding-company affiliation on the level of bank profits is also examined. The results indicate larger economies of scale for branch banks than for unit banks; and bank holding-company affiliates were found to be more efficient than independent banks.     

Economies of scale and scope in water supply

This study examines the multiproduct nature of water supply relative to economies of scale and scope. The water utility is viewed as a multiproduct firm providing residential and non- residential services with spatial variation. There are no significant economies of scale in the utility's overall operation. The utility, however, enjoys considerable economies for non- residential water supply but suffers from diseconomies in residential supply. The economies of scale achieved in water treatment are mostly lost in the distribution of water. The utility on the whole experiences economies of scope associated with joint production of the two services. Furthermore, water utilities have no perceptible tendency to behave as a natural monopoly.     

Economies of scale and market power in policing

The objective of this paper is to use a simultaneous equations method for estimating police production and demand to determine whether or not there are economies of scale in policing. In addition, the effect of market power on productivity, using the Herfindahl–Hirschmann Index, is to be measured. The estimation yields the result that there are diseconomies of scale with respect to the amount of crime beyond about 22 000 people in the policing jurisdiction and diseconomies of scale in numbers of police beyond about 36 000 people. Efficiency is also reduced where there is greater market power. This is conjectured to be the public sector equivalent of taking market power profits. Copyright © 2005 John Wiley & Sons, Ltd.     

Economies of scale and scope in French commercial banking industry

This paper presents estimations of economies of scale and scope in the French banking industry. Using a translog model of bank costs, the paper demonstrates the existence of economies of scale for French banks, particularly in what concerns operating costs. Economies of scale are observed in all classes of bank size. Results also suggest that cost subadditivity exists in the French banking industry.     

Economies of scale and scope in French banking and savings institutions

In this study, we analyze the costs incurred by French commercial banks and savings institutions. One of the main distinctions between these two types of financial entities concerns management costs, which are higher for commercial bank demand deposits than for the savings institutions' tax-free livret A passbook accounts. Taking this differential into consideration by constructing separate models based on different principles, we find that the average overall and operating costs of the savings institutions are half those of commercial banks. As regards operating costs, small savings institutions enjoy a significant cost advantage over small commercial banks, but this cost advantage is smaller when one compares the performance of large savings institutions to the large banks. The results of our econometric estimates suggest a possible explanation, as we find increasing returns to scale for the banks and diminishing returns for the savings institutions. The value of the returns-to-scope parameter at the mean point appears to indicate a complementarity between certain pairs of outputs. Therefore, ouptut diversification appears to have a positive impact on cost levels for both savings institutions and commercial banks; while institution size, measured by the total assets, has a different impact in these two industries.     

Economies of scale in steam-electric power generation in East-North-Central U.S.

In this study the author investigates firm-level cross-sectional unit cost advantages for electricity generation for 31 regulated private steam-electric utilities in East-North-Central U.S. region during 1987. The production technology is modeled using the implied dual minimum total variable cost translog methodology. Estimates of Zellner’s Seemingly Unrelated Regressions indicate a smooth non-homothetic technology, a typical regional firm-level scale economies of about 0.263, and an implied mean cost-output elasticity of about 0.737. Significant scale economies exist for several of the smaller utilities. The findings support policies which steer energy-intensive industrial location decisions in a direction which captures unutilized unit cost economies in electricity generation.     

Economies of scale for a state system of public school districts

A review of the different variables, school district samples, regression techniques and a priori assumptions utilized in recent studies clearly indicates that no standard model or set of procedures have been developed for the problems of economies of scale within the educational sector. Based on these studies and a brief discussion of the limitations of economies of scale models as a tool in policy planning, we present a generalizable model that can easily be applied to statistics now available in state departments of education to derive valuable new information about the existing cost-size relationships and opportunity costs that exist in a state system of public school districts. A recent application of the model in Oregon that illustrates its generalizability is described. An example of how economies of scale information might be used in policy planning and proposed district consolidations is also outlined.     

Economies of scale after deregulation in LTL trucking: a test case for the survivor technique

Early critics of motor carrier deregulation believed that the policy was unwise because strong economies of scale would lead to harmful market concentration, particularly in the industry's LTL segment. Using two methodologies, the survivor technique and the trans‐log cost function, this study finds that economies of scale do extend across the entire spectrum of firm sizes in LTL trucking. Long‐run average cost appears to decline mildly and at a diminishing rate with increases in firm size, however, such that any cost advantage for larger firms has been insufficient to eliminate new entry and competition from smaller rivals. As a result, after the first 20 years of deregulation, the corresponding increase in market concentration has also been mild. Moreover, the consistency of results from the two methodologies gives credibility to the survivor technique as an empirical method of identifying economies of scale. Copyright © 2008 John Wiley & Sons, Ltd.     

中国银行业的规模经济和范围经济--基于广义超越对数成本函数的检验

本文利用广义超越对数成本函数估计了我国国有商业银行及股份制商业银行1994—2001年的成本函数，并计算出各自的规模经济和范围经济。结果表明：国有商业银行存在规模经济而股份制商业银行存在轻微的规模不经济；国有商业银行在其传统业务(存款、贷款)上具有规模经济，在投资上具有规模不经济，股份制商业银行则相反；国有商业银行及股份制商业银行都存在总体范围经济；国有商业银行在贷款和存款上的范围经济大于在投资上的范围经济，股份制商业银行在贷款上不具有范围经济，而在投资和存款上具有显著的范围经济；国有商业银行和股份制商业银行在贷款和投资组合上都不具有成本互补性，而在贷款和存款及存款和投资组合上都具有轻微的成本互补性。针对上述检验结果，提出了相应的政策建议。     

财经

2008年宏观调控重点发生改变；2008年货币政策将从紧；存款准备金率创新高；央行宣布2007年第六次加息；2008年水价将适当上调。     

Centrally Planned Economies

A bstract . Historical comparisons between the USSR and US economies most often focus on the stark contrasts between market and centrally controlled systems. However, expediency in response to dynamic pressures caused the adoption of central planning in both countries. Additionally, the USSR's lackluster economic performance when wedded to Marxism caused institutional arrangements to move toward markets. After summarizing USSR's central planning experiences before 1965, its similarity to the US's wartime planning is discussed. These comparisons provide insights into the problems of moving between market and planned economies     

The Dynamics of Capital Structure in Transition Economies

This paper uses a dynamic unrestricted capital structure model to examine the determinants of the private companies' target financial leverage and the speed of adjustment to it in two transition economies, the Czech Republic and Bulgaria. We explicitly model the adjustment of companies' leverage to a target leverage, and this target leverage is itself explained by a set of factors. The panel data methodology combines cross-section and time-series information. The results indicate that the Bulgarian corporate credit markets were less supply -constrained than those of the Czech Republic during the period under investigation. Bulgariancompanies adjusted much faster to the target leverage than Czech firms. The speed ofadjustment related positively to the distance between target and observed ratio for Bulgarian companies while the relationship was neutral for Czech companies. The conservative policies of Czech banks and the exposure control were likely responsible for the slower adjustment among the larger companies while the opposite were true for Bulgarian banks and companies.     

Usufructuary Mortgages in Rural South Asian Economies

A bstract . A section of the informal credit market in an agrarian society is explored, namely the usufructuary land mortgage , a type of money-lending contract that is common in rural economies of South Asia. In this type of transaction, the lender charges no explicit interest on the loan, but since the mortgagee is free to utilize the land for his own cultivation , net income from the land is, in effect, an implicit form of interest payment. Issues relating to the determination of the rate of interest and the oft-found phenomenon of undervaluation of the collateral are discussed. A model is provided that shows the proper relationship between undervaluation of collaterals and the high implicit usufruct rates of interest. This relationship can only be understood by defining the opportunity cost of money in terms of purchasing new land. It is shown that, for any rate of default less than 100%, return from money lending is lower than return from land purchase under certain circumstances. It is then argued that undervaluation of collateral may be a mechanism to compensate the lender for the opportunity cost of his funds.     

On Markets and Pseudo-Markets in Socialist Economies

Liberalisation of East European economies is desirable. But, as Professor Jan Winiecki of Warsaw University points out, there are reforms and psuedo-reforms.     

Accounting in Transitional and Emerging Market Economies

The aim of this introduction is to discuss some of the challenges and problems faced by researchers who are interested in conducting research in transitional and emerging market economies and to highlight some of the key attributes and characteristics of these economies. The papers contained in this Special Section are introduced by way of providing a brief overview of their contributions and identifying other important areas that future researchers might wish to pursue.

This Special Section of European Accounting Review is devoted to publishing papers on various accounting issues in transitional and emerging market economies. In this introduction, we aim to set the scene for the papers contained in this Special Section, to highlight some of the key attributes and characteristics of transitional and emerging market economies, to provide a brief overview of the contributions published here and finally to identify some other important areas that future researchers might wish to pursue.     

Purchasing Power Parity in Three Transition Economies

This paper uses cointegration analysis on monthly data over April 1994-December 2000 to test the relevance theory of Purchasing Power Parity (PPP) for two advanced transition economies (Poland and the Czech Republic) and one lagging transition economy (Romania). PPP is not rejected between the lagging reformer and developed market economies, but is rejected between the advanced reformers and the developed economies. However, PPP is not rejected between the two advanced transition economies, though it is rejected between the lagging and advanced transition economies. The evolution of the real exchange rates over 1994-2000 suggest that a significant explanation for these findings is the central role of the exchange rate in the disinflation strategies of Poland and the Czech Republic in the early part of this period, in contrast to the managed float followed by Romania throughout the period.