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.     

An empirical analysis of euro cash payments

If the denominational structure of the euro is used in an optimal way, there should be no preferences for certain coins and notes when making cash payments. In Kippers et al. [2003. An empirical study of cash payments. Statistica Neerlandica 57, 484-508] it is documented that the Dutch public did have certain preferences concerning the Dutch guilder in the sense that a few notes and coins were used less often than they should have been. With the advent of the euro, which changed the denominational structure from 1--5 (guilder) to 1-2-5 (euro), it is of interest to examine whether there are any preferences for euro coins and notes. In this paper we use a unique dataset for the Netherlands to empirically examine if the euro range is used in an optimal way. We find that there are no preferences for certain euro denominations.     

Economies of scale and scope in petroleum refining

Despite evidence that aggregate consumption of complex carbohydrates has risen over the last decade, food consumption surveys suggest that fewer households are consuming less bread, pasta rice, potatoes and corn. This paper estimates systems of complex carbohydrae demand using cross-sectional data from 1977–78 and 1987–88 in order to explain this paradox. Changes in demand that are not explained by changes in prices or income are explained by variations in taste. Because tastes cannot be directly observed, the paper uses a multiple indicator and multiple cause (MIMIC) model to construct a suitable proxy variable. In the MIMIC approach, the ‘indicators’ are residuals from a household demand function that includes prices and incomes as explanatory variables, while household and demograhic proxies are ‘cause’ variables. The objectives in applying the MIMIC model are to determine the effect of consumer tastes on complex carbohydrate demand and, comparing cross-sectional survey data from two different periods, test the hypothesis that these tastes change over time. The data consist of US complex carbohydrate prices and expenditures, taken from the USDA Household Food Consumption Surveys in 1977–78 and 1987–88. The results show that structural changes in demand, or those that are not explained by changes in price, income, or the cause variables, led to an increase in complex carbohydrate demand of 5% from 1977–78 to 1987–88. However, changes in demand explained by the cause variables cause demand to fall by 9%.     

Concentration of land holdings: An empirical exploration of Kuznets' conjecture

According to Kuznets (1963), the dynamics of the maldistribution process starts from an initial unequal income distribution, then through a cumulative effect, a high concentration of asset holdings is induced which in turn contributes to a high concentration of income. In other words, unequal income distribution tends to be self-perpetuated and unequal asset holdings is a medium of such process. The literature on rural income distribution seems to suggest a different emphasis by assigning a more crucial role to asset holdings, i.e., land, in the explanation of unequal income distribution. This study shows, via a simultaneous equation model and a multi-nation cross-sectional set of data, that both the land and income concentration ratios are positively related. Of the two rival conjectures of emphasis, the empirical evidence lends support in the general case to Kuznets, that is, over the entire range of countries, developed and less-developed, inequality in income seems to cause inequality in land holdings rather than vice-versa In the specific case of less developed countries, it is the high concentration of land holdings that influences the unequal distribution of income.     

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.     

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 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 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.      

Gender diversity,cash holdings and the role of the institutional environment: empirical evidence in Europe

While substantial evidence is emerging internationally on higher risk aversion among women than among men, there is less evidence on women’s business choices. We explore some of the reasons for the relationship between gender diversity and cash holdings. Specifically, this paper focuses on the choices involving the stock of cash held by firms in which women have executive roles and can consequently exert a crucial influence on the firms themselves. We estimate our proposed empirical models using a dataset of 12,466 observations from 18 European countries. We find a positive relationship between the presence of women with executive roles in the firm and cash holdings. Women tend to make more conservative choices probably because they are more risk averse than men are. This propensity has a relevant impact on the financial choices of firms when women play a leading role. Notably, the study demonstrates that the institutional environment and industry differences moderate our baseline relationship.     

The effect of cash flow on investment: an empirical test of the balance sheet theory

Using a large data set on investments and accounting information for private firms, we put the balance sheet theory to test. We find that firm cash flow has a positive impact on investment and that the effect is enhanced for firms which are more likely to be financially constrained. We also find that the investment-cash flow sensitivity is significantly larger and more persistent during the first half of our sample period, which includes a severe banking crisis and recession. Our results suggest that financial constraints matter more in periods characterized by adverse economic conditions.     

能力经济:一种新的理论假说

从企业的角度，如何评价战略的优劣，这是战略管理研究者的主要任务之一。企业本上是能力的集合体，能力经济决定了企业战略选择。企业能力经济可以包容规模经济和两种不同的范围经济，揭示了企业可持续竞争优势的更深层次的共有来源。     

旅游经济的福利效应研究进展

在国内外学者对旅游经济的福利效应研究基础上,对其理论基础、研究方法和研究案例进行全面分析,发现其理论基础主要源于福利经济学及国际贸易学的相关理论等。研究方法大致分两类,基于问卷的主观评价法,即价值评估方法,以及经济学的客观评价法,如一般均衡模型(GEM)。两类方法各有优缺点:价值评估方法间接获取福利,缺乏说服力,一般不宜采用;一般均衡模型相对科学,但建模复杂,需要综合考虑多种因素,对学者的个人素质要求较高,应用难度较大。研究视角主要集中在经济学领域,从旅游学角度出发的研究极度缺乏。研究案例较多,但利用GEM的研究案例相当少,国内研究更是不足。我国旅游业正值蓬勃发展,厘清旅游经济的福利效应,对旅游业可持续发展具有重要意义,因此将更先进的研究方法应用于旅游经济福利效应研究,具有迫切的必要性。     

Cross-impact balances: A system-theoretical approach to cross-impact analysis

Cross-Impact methods are standard tools of the scenario technique. They provide a number of structured processes for the deduction of plausible developments of the future in the form of rough scenarios and are based on expert judgments about systemic interactions. Cross-Impact methods are mostly used for analytical tasks which do not allow the use of theory-based computational models due to their disciplinary heterogeneity and the relevance of “soft” system knowledge, but on the other hand are too complex for a purely argumentative systems analysis. The essentials of a new Cross-Impact approach (Cross-Impact Balance Analysis, CIB) are outlined; it is of high methodological flexibility and is especially suitable for the use in expert discourses due to its transparent analytical logic. Due to its mathematical qualities it is also particularly well suited for the analytical integration of calculable system parts. An application of CIB to a project on the generation of electricity and climate protection is described. For a theoretical foundation of the CIB method relations to systems theory, especially to the theory of dynamic systems, are discussed. This explicates that CIB scenarios correspond to the solutions of slowly time-varying pair-force systems.     

Unemployment and growth: some empirical evidence from structural time series models

This study investigates the empirical relationship between unemployment and growth in a number of OECD economies. A structural time series model is used for labour productivity growth to demonstrate that, in most economies, there seems to be a negative correlation between unemployment and labour productivity growth. The results provide little support for the theory that recessions may stimulate productivity growth. The use of a structural time series approach allows an attempt to model the underlying dynamics of productivity growth jointly with the effect of unemployment.