Economies of scale and scope in Flemish secondary schools

This study estimates a multiproduct translog cost function for the entire population of 1011 Flemish secondary schools in order to determine the degree of ray and product specific (dis)economies of scale as well as the degree of (dis)economies of scope. Three types of schools and seven major study fields can be distinguished. Student loads in these study fields are used as outputs produced by the schools. Evidence is found for ray economies of scale for the three types of schools, even at output levels of 300% of the actual means. Although the cost elasticities of six out of seven outputs are close to zero, most of the values indicating the degree of product specific economies of scale are negative (suggesting diseconomies of scale). However, this can be explained by the considerable scope effects which are incorporated in the definition of the product specific economies of scale.     

Economies of scale and scope in the European banking sector

In this article, using the data of 2008, we try to describe the impact of scale and product differentiation in 282 European banks. While evidence of the economies of scale is less clear, the results obtained using a translogarithmic function system show that significant economies of scope do exist even for new banking products like derivatives.

Economies of scope and the scope of the enterprise

This paper examines elements of an efficiency-based theory of the multiproduct firm. The theoretical framework developed by Williamson to explain vertical integration is extended to explain diversification. The proposition is advanced that a cost function displaying economies of scope has no direct implications for the scope of the business enterprise. However, if economies of scope are based upon the common and recurrent use of proprietary knowhow or the common and recurrent use of a specialized and indivisible physical asset, then multiproduct enterprise (diversification) is an efficient way of organizing economic activity. These propositions are first developed in a general context and then examined in the context of diversification in the U.S. Petroleum industry.     

Economies of density, scale and scope in the water supply and sewerage sector: a study of four developing and transition economies

Using panel data, we estimate measures of density, scale and scope economies in four countries that differ substantially in their levels of economic development and in their piped water and sewerage coverage: Brazil, Moldova, Romania and Vietnam. We find evidence of economies of scale in Moldova, Romania and Vietnam. In Brazil, we cannot reject the null hypothesis of constant returns to scale. The results of this study show that the cost structure of water and sewerage utilities varies significantly within and between countries and over time.      

Economies of scale and the optimality of rotational dynamics in forestry

Forest harvesting is traditionally analyzed in terms of the Faustmann rotation model. This paper considers the identification of optimal forest harvest regimes using jump controls. This approach enables the structural assumptions of clear-cut technology and identical cycles in perpetuity which are imposed in a Faustmann model to be relaxed. Jump control models permit investigation of the biological and economic conditions which favour continuous growth management regimes as opposed to clear-cut harvest regimes. A numerical solution approach to the jump control model is presented. The link between the harvest cost function and the optimal biomass path is analyzed. Economies of scale are shown to generate rotational harvest as optimal policies.      

Economies of scope in electricity supply and the costs of vertical separation for different unbundling scenarios

Motivated by the movement towards vertical unbundling in Europe this study measures the economies of scope for the U.S. electricity industry based on a multi-stage cost function. The paper analyzes three unbundling options and finds evidence for synergies that may be explained by coordination and risk effects. Separating generation from networks and retail appears to be the most costly alternative with an average cost increase of 19 to 26%. If generation and transmission remain integrated but are separated from distribution and retail, average scope economies amount to 8 to 10%. A split between the transmission level and the remaining supply stages leads to a cost increase of approximately 4%.     

Economies of scale,school violence and the optimal size of schools

This article argues that policy in relation to education has relied too extensively on the more easily measured costs of production to support a common conclusion of economies of scale in school and/or district size. It argues that there are external costs that increase with size but that can be measured less easily that offset this case. This would imply that the tendency within the education profession to advocate ever-larger school sizes is premature at best. To make the case, it models the choice of school size to emphasize that costs, such as school violence, born by both students and their parents but not (necessarily) by education administrators may result in school sizes that are too big from the perspective of school users. The second and third parts of the article introduces evidence to suggest that school violence is one of these external costs.     

Economies of scale and trade policy: The median voter model revisited

Why do some political economy models perform so poorly in predicting actual trade policy? Do scale economies provide the missing puzzle to our understanding of the anti-trade bias? By integrating economies of scale in production, this paper theoretically reinstates the median voter model as in Mayer [Mayer, W. (1984). Endogenous tariff formation. The American Economic Review, 74, 970–985] as a suitable political economy model in predicting trade policy. The modified model generates the scope for the anti-trade bias and predicts that sometimes economic, rather than political, considerations may lead to restrictive trade.     

Economies of scale in schools: some evidence from the private sector

Extending the family of functional forms of demand for money to the quadratic flexible functional family with first-order autoregressive errors, this paper tests several member functions of the family, tests stability of functions over time, and investigates the effect of temporal aggregation level of data. The stability hypothesis is strongly rejected and the acceptable functional form is found to depend on the temporal aggregation level of data.     

Enterprise diversification in US dairy: impact of risk preferences on scale and scope economies

Enterprise diversification has recently become a prominent feature of US dairy farms. Scope economies and risk aversion are two forces that simultaneously determine diversification. We jointly estimate scope economies and determine risk preferences under price uncertainty. We reject risk neutrality in favour of Increasing Absolute Risk Aversion (IARA) and Increasing Relative Risk Aversion (IRRA). Scope economies are significant, but diminish with farm size. Increasing returns to scale exist in the production of multiple enterprises and diminish with size. Large farms operate under decreasing returns to scale. Ignoring risk preferences, a common practice in empirical work, results in an underestimate of the effect of scope economies for large farms.     

Economies of scale in households' cash balances: A series of empirical tests

Here is tested on a sample of FRench chwque deposits in 1966 the hypothesis of economies of scale in the households cash balances. These economies of scale when compared to those expected from theoretical models (Allais, Baumol) turn out to be relatively small. It is suggested that this slight result is due to the fact that the value of the transactions of the studied accounts differ more because of the average value of the effective operations than because of the number of these operations.     

Economies of scale in the US computer industry: An empirical investigation using data envelopment analysis

Up to recently, economists have had no good tools to measure the returns to scale of individual corporations in an industry. Data envelopment analysis (DEA) is a linear programming technique for determining the efficiency frontier (the envelope) to the inputs and outputs of a collection of individual corporations or other productive units. While DEA offers an avenue for calculating the returns to scale of individual corporations, the approach has been riddled by mathematical complications arising from the possibility of alternate optima. The present paper develops theory for calculating the entire range of these alternate optima. Furthermore, in a quite ambitions empirical application, DEA is employed to determine the time path of returns to scale of all publicly held U.S. computer companies over the time period 1980–1991. For the great majority of companies, a unique time path is obtained; only in less than 4 percent of the linear programming calculations is an entire range of alternate optima obtained. The results indicate that the computer industry was polarized into two camps: large aging corporations with decreasing returns to scale, and swarms of small upstart companies with advanced technology exhibiting increasing returns to scale.     

Law and Finance in Transition Economies

This paper offers the first comprehensive analysis of legal change in the protection of shareholder and creditor rights in transition economies and its impact on the propensity of firms to raise external finance. Following La Porta et al. (1998), the paper constructs an expanded set of legal indices to capture a range of potential conflicts between different stakeholders of the firm. It supplements the analysis of the law on the books with an analysis of the effectiveness of legal institutions. Our main finding is that the effectiveness of legal institutions has a much stronger impact on external finance than does the law on the books, despite legal change that has substantially improved shareholder and creditor rights. This finding supports the proposition that legal transplants and extensive legal reforms are not sufficient for the evolution of effective legal and market institutions.     

Sustainability in Closed and Open Economies

This paper discusses unilateral sustainability policies for tradable resources in closed and open economies. The effects of sustainability policies are modeled in an intertemporal, competitive framework by applying different sustainability rules which are introduced unilaterally in the domestic country. The paper shows that no sustainability rule will lead to a slower rate of extraction of the resource. Unilateral policies will lead to an import of sustainability. It is also shown that the foreign country may well gain in terms of consumption and real income from such unilateral sustainability policies but not in terms of sustainability.     

论农村创意经济及其实现路径

理论进展和世界各国的实践表明,经济的发展主要依靠而且会越来越依靠创意的支撑,创意经济已经成为经济发展的一种高级形态。理论和国内外经验表明,创意经济也是农村经济发展的理想形态。但在创意生产方面,传统模式具有较大局限性。在对此进行论证的基础上,本文提出了我国农村发展创意经济的实现路径,即强化外部知识参与,实现农村与城市之间、农民与外部知识供给者之间的协同创新。     

Liquidity Constraints and Investment in Transition Economies

We use Bulgarian firm-level data to investigate the impact of liquidity constraints on investment performance. Internal funds are an important determinant of investment in most industrialized countries. We test whether internal funds are important for firm investment during the current transition process in Bulgaria. We use a simple accelerator model of investment to test whether liquidity constraints are relevant in the case of Bulgaria. Our estimations are based on data for the period 1993–95, prior to the Bulgarian financial crisis in 1996–97. It turns out that Bulgarian firms are liquidity constrained, and that firms' size and financial structure help to distinguish between firms that are more and less liquidity constrained. In our view, liquidity constraints can be given a different interpretation in the case of transition economies as compared to Western economies. A more in depth analysis of the data reveals that liquidity constraints, and consequently the access to external funds for Bulgarian firm investment, are to be seen against the background of soft-budget constraints and the failure of the financial system to enforce an efficient allocation of funds. In our view, the lack of liquidity constraints may actually be seen as a sign of financial weakness in the case of Bulgaria.     

规模经济与银行业发展综述

规模经济既是西方微观经济学中的一个基本概念,也是产业组织理论研究的核心问题之一。银行业天生就是一个规模经济效应较强的产业。在研究中国银行业的规模经济问题时,重在探析决定和影响中国银行业规模经济的主要因素以及区分不同的层次;在关注银行规模内在经济和外在经济的同时,须考察银行规模结构,从静态和动态两方面去研究生产要素在银行间的配置组合格局。