efficiency in the factoring industry the efficiency and productivity in the italian factoring industry between 1993 and 1997 is investigated using dea the factoring industry is an important part of many financial systems and it has established itself as a major source of finance and credit management for a growing number of companies however as far as the authors are aware no studies have applied frontier methodologies to examine the efficiency and productivity of this industry this paper focuses on the italian market the second largest in the world after the uk the results suggest that there are substantial cost savings to be had in the italian factoring industry the mean cost inefficiency in the italian factoring industry over the period 1993 1997 ranged between 14 and 22 these inefficiencies are mainly generated by allocative rather than technical inefficiencies scale and technical inefficiencies seem to be similar in magnitude and the supposed importance of the latter typically found in the banking efficiency literature are n

a comparative study of efficiency in european banking this paper investigates whether there has been an improvement in and convergence of productive efficiency across european banking markets since the creation of the single internal market using efficiency measures derived from dea estimation the determinants of european bank efficiency are evaluated using the tobit regression model approach the established literature on modelling the determinants of bank efficiency is then extended by recognizing the problem of the inherent dependency of dea efficiency scores when used in regression analysis to overcome the dependency problem a bootstrapping technique is applied overall the results suggest that since the eu s single market programme there has been a small improvement in bank efficiency levels although there is little evidence to suggest that these have converged the results also suggest that inference on the determinants of bank efficiency drawn from non bootstrapped regression analysis may be biased and misleading

how different is the efficiency of public and private water companies in asia several studies have compared the efficiency of publicly and privately owned water utilities and reached conflicting conclusions on the impact of ownership on efficiency this article provides further evidence by estimating a stochastic cost frontier for a sample of asian and pacific regional water companies the results show that efficiency is not significantly different in private companies than in public ones

unobserved heterogeneity in stochastic cost frontier models this paper applies a number of stochastic cost frontier models to a panel data set and compares their ability to distinguish unobserved heterogeneity from inefficiency variation among firms the main focus is on greene s 2005 panel data model that incorporates firm specific effects in a stochastic frontier framework in cases where the unobserved heterogeneity is correlated with explanatory variables while the random effects estimators can be biased the fixed effects model may overestimate inefficiency in line with mundlak a simple method is proposed to include such correlations in random effects specification the sample includes 36 swiss nursing homes operating from 1993 to 2001 the results suggest that the proposed specification can avoid the inconsistency problem while keeping the inefficiency estimates unaffected

distributional and revenue raising arguments for tariffs this paper presents and analyses distributional and revenue raising arguments in favor of tariffs and other trade taxes it shows that such an argument depends crucially on the domestic tax powers that are available to the government conditions that must be satisfied by optimal tariffs are obtained and interpreted these conditions are then applied to a simplified model in order to gain greater insight into the determinants of the optimal tariffs finally the arguments are illustrated by some numerical examples which show that these tariffs can be far from negligible and demonstrate their sensitivity to various parameter changes

some models for estimating technical and scale inefficiencies in data envelopment analysis in management contexts mathematical programming is usually used to evaluate a collection of possible alternative courses of action en route to selecting one which is best in this capacity mathematical programming serves as a planning aid to management data envelopment analysis reverses this role and employs mathematical programming to obtain ex post facto evaluations of the relative efficiency of management accomplishments however they may have been planned or executed mathematical programming is thereby extended for use as a tool for control and evaluation of past accomplishments as well as a tool to aid in planning future activities the ccr ratio form introduced by charnes cooper and rhodes as part of their data envelopment analysis approach comprehends both technical and scale inefficiencies via the optimal value of the ratio form as obtained directly from the data without requiring a priori specification of weights and or explicit delineation of assumed functional forms of relations between inputs and outputs a separation into technical and scale efficiencies is accomplished by the methods developed in this paper without altering the latter conditions for use of dea directly on observational data technical inefficiencies are identified with failures to achieve best possible output levels and or usage of excessive amounts of inputs methods for identifying and correcting the magnitudes of these inefficiencies as supplied in prior work are illustrated in the present paper a new separate variable is introduced which makes it possible to determine whether operations were conducted in regions of increasing constant or decreasing returns to scale in multiple input and multiple output situations the results are discussed and related not only to classical single output economics but also to more modern versions of economics which are identified with contestable market theories

measuring technical efficiency in the greek agricultural sector this paper measures the degree of technical efficiency of greek farms at discrete points in time stochastic frontier production functions are estimated from four annual farm accountancy data network fadn surveys of the 1992 1995 period from the results a measure of technical efficiency is calculated for each farm for each year the four distributions of technical efficiency values are examined and compared all four samples show a wide range of farm specific technical efficiency but efficiency is improving over the period the paper also presents frontier estimates for small and large farms classified according to economic size in that case technical efficiency measures are calculated and their distributions are examined and compared the results show that large farms are more efficient than small farms however efficiency is improving in both size farms over the period in general the results of this study indicate that there is substantial scope for improving technical efficiency of greek farms

does industrial composition matter for wages a test of search and bargaining theory does switching the composition of jobs between low paying and high paying industries have important effects on wages in other sectors in this paper we build on search and bargaining theory to clarify a key general equilibrium channel through which changes in industrial composition could have substantial effects on wages in all sectors in this class of models wage determination takes the form of a social interaction problem and we illustrate how the implied sectoral linkages can be empirically explored using u s census data we find that sector level wages interact as implied by the model and that the predicted general equilibrium effects are present and substantial we interpret our results as highlighting the relevance of search and bargaining theory for understanding the determination of wages and we argue that the results provide support for the view that industrial composition is important for understanding wage outcomes

the dominance of inefficiencies over scale and product mix economies in banking abstract this study measures and analyzes inefficiencies for all u s banks in 1984 inefficiencies are measured relative to a thick frontier cost function and are found to dominate measured scale and product mix economies most inefficiencies are operational in nature involving the overuse of physical inputs rather than financial involving overpayment of interest also technical inefficiencies proportionate overuse of all inputs dominate allocative inefficiencies improper mix of inputs these results suggest that competitive pressures in banking from deregulation will be focused primarily on banks that do not control costs rather than on those of a particular size or product mix

restricted redistributive taxation shadow prices and trade policy abstract this paper reports on the use of an algorithm to compute optimal policies in the areas of commodity taxation international trade and public shadow pricing for a government which is interested in redistributing income but has limited powers of taxation the algorithm is applied to selected ldc data using a highly simplified general equilibrium model some insight into the relationships between constraints on taxation and other areas of government policy is provided by analyzing models where domestic tax restrictions can make inefficient public production or tariffs on international trade desirable

optimal taxation and public production in an open dual economy abstract this paper analyses the determinants of optimal tax policy trade policy and shadow prices for cost benefit analysis in a dual economy it breaks new ground by combining in one model the tax and public investment policies considered in the public economics literature with the notion of labor market imperfection central to contributions on the dual economy optimal policies are first derived analytically providing rules for organizing production setting taxes and off setting labor market distortions production efficiency is shown to obtain for the taxable part of the economy a generalized ramsey rule derived for producing cumconsuming households in the directly non taxable sector of the economy and new characterizations of optimal rural urban migration established in the presence of distortionary taxation a simple general equilibrium model is then numerically implemented on data for a particular developing country the optimal policies analytically derived before are computed in the model under alternative assumptions about government revenue requirements the degree to which different sectors of the economy are directly taxable the nature of property rights and technological substitution possibilities the results of these computations provide further insight into the theoretical results as well as clarifying their quantitative significance

decomposing changes in wage distributions a unified approach over the last fifteen years many researchers have attempted to explain the determinants and changes of wage inequality i propose a simple procedure to decompose changes in the distribution of wages or in other distributions into three factors changes in regression coefficients the distribution of covariates and residuals the procedure requires only estimating standard ols regressions augmented by a logit or probit model it can be extended by modelling residuals as a function of unmeasured skills and skill prices two empirical examples showing how the procedure works in practice are considered in the first example sources of differences in the wage distribution in alberta and british columbia are considered in the second sources of change in overall wage inequality in the united states 1973 99 are re examined finally the proposed procedure is compared with existing procedures jel classification j3 la decomposition des changements dans les distributions de salaires une approche unifee au cours des quinze dernieres annees nombre d etudes se sont penchees sur les determinants et les changements de la distribution des salaires ce memoire propose une procedure pour decomposer les changements de la distribution des salaires en trois elements les changements dans les coefficients de regression la distribution des regresseurs et les changements residuels cette procedure ne necessite que l estimation de regressions par moindre carres ordinaires et d un modele probit ou logit l auteur montre aussi comment modeliser les residus en fonction de competences non mesurees la procedure proposee est mise en application dans le contexte de deux exemples la distribution des salaires en alberta et en colombie britannique et les changements dans la distribution des salaires de 1973 a 1999 aux etats unis le memoire examine aussi comment cette procedure se compare aux methodes proposees par d autres chercheurs

directly unproductive profit seeking dup activities this paper propses directly unproductive profit seeking dup activities as a general concept that embraces a wide range of recently analyzed economic activities including the subset of rent seeking activities considered by krueger it then proceeds to provide a synthesis and generalization of the welfare theoretic analysis of such activities by developing a fourfold categorization of cases depending on the levels of distortions before and after the dup activity thus a unification and overview of the subject are achieved

mobility and the return to education testing a roy model with multiple markets self selected migration presents one potential explanation for why observed returns to a college education in local labor markets vary widely even though u s workers are highly mobile to assess the impact of self selection on estimated returns this paper first develops a roy model of mobility and earnings where workers choose in which of the 50 states plus the district of columbia to live and work available estimation methods are either infeasible for a selection model with so many alternatives or place potentially severe restrictions on earnings and the selection process this paper develops an alternative econometric methodology that combines lee s 1983 parametric maximum order statistic approach to reduce the dimensionality of the error terms with more recent work on semiparametric estimation of selection models e g ahn and powell 1993 the resulting semiparametric correction is easy to implement and can be adapted to a variety of other polychotomous choice problems the empirical work which uses 1990 u s census data confirms the role of comparative advantage in mobility decisions the results suggest that self selection of higher educated individuals to states with higher returns to education generally leads to upward biases in ols estimates of the returns to education in state specific labor markets while the estimated returns to a college education are significantly biased correcting for the bias does not narrow the range of returns across states consistent with the finding that the corrected return to a college education differs across the u s the relative state to state migration flows of college versus high school educated individuals respond strongly to differences in the return to education and amenities across states

efficiency in the public and private french water utilities prospects for benchmarking this article uses a data envelopment analysis dea and a stochastic frontier analysis sfa to assess the relative technical efficiency of 177 decision making units in the french water supply sector in 2009 water utilities can be directly managed by the local authorities or contracted out and then managed by a private operator the use of a three stage model mixing dea and sfa enables us to dissociate managerial inefficiencies from the structural inefficiencies and statistical noise after having taken the environmental variables into account we find that private management are on average slightly less efficient than public management an explanation to this performance gap can be different resource management

demographics and recent productivity performance insights from cross country comparisons over the last few decades countries have experienced quite different patterns of productivity growth in this paper we emphasize the role of country level demographics in explaining these differences in particular looking over the period 1960 2002 we show that cross country data support the notion that starting in the late 1970s countries went through a period of technological transition that lasted at least until the mid 1990s for the fastest adjusting countries and is still proceeding for the slower adjusting countries the main claim of the paper is that the country level rate of labour growth was a key factor driving the speed of adjustment to the new technological paradigm implying that much of the cross country difference in economic performance over recent decades can be explained by demographic differences across countries as opposed to the many other factors emphasized in the literature jel classification o33 o41 demographie et productivite eclaircissements et conjectures derives de comparaisons entre pays au cours des quelques dernieres decennies divers pays ont fait l experience de patterns differents dans la croissance de la productivite dans ce memoire les auteurs presentent une interpretation des patterns recents de productivite du travail qui met l accent sur la demographie du pays comme facteur explicatif de ces differences en particulier pour la periode 1960 2002 on montre que les donnees comparatives entre pays supportent l hypothese que a partir de la fin des annees 1970 les pays ont vecu une periode de transition technologique qui a dure jusqu au milieu des annees 1990 pour les pays qui se sont ajustes le plus vite et qui est encore en cours pour ceux qui se sont ajustes plus lentement la proposition principale mise de l avant dans le memoire est que la croissance de la main d oeuvre d un pays a ete un facteur cle dans la definition de la vitesse d ajustement au nouveau paradigme technologique ceci suggere qu une bonne partie des differences de performance economique entre pays au cours des dernieres decennies est attribuable aux differences dans la demographie de ces pays plutot qu aux multiples facteurs mentionnes habituellement dans la litterature compte tenu du fait que la transition technologique met du temps a s accomplir 20 a 30 ans cette perspective suggere que qu il faut etre extremement prudent quand on se fonde sur des comparaisons de croissance de productivite entre pays et sur des periodes courtes de 5 a 10 ans pour tirer des conclusions quant aux politiques economiques a mettre en place

globalization returns to accumulation and the world distribution of output abstract this paper examines the extent to which the process of globalization can explain the observed widening in the cross country distribution of output per worker on the theoretical front the model highlights why when the labor market is subject to a holdup problem the opening up of trade will cause an increase in the dispersion of income across countries similar to that observed in the data the increase in dispersion in the model arises due to the emergence of a discrepancy between the private and social returns to capital accumulation that favors capital abundant countries on the empirical front we document the relevance of the model by examining whether growth patterns decomposition exercises and specialization patterns support the model s predictions overall we find that over 50 of the recently observed increase in income dispersion across countries can be accounted for by the mechanism exemplified by the model

a stochastic frontier model of the productive efficiency of korean container terminals a central objective of port privatization and or deregulation policies is stimulating greater efficiency by engendering a more competitive market and commercial approach to management korea provides a prime example of a nation that is implementing such policies also its ports play a pivotal role in world shipping particularly in the ever burgeoning container market the success of these policies in increasing the productive efficiency of korean container terminals is assessed the uk container terminal sector provides a useful benchmark for comparison since privatization and deregulation have formed an integral part of uk port reforms for nearly 20 years and the effect on efficiency having had time to mature will be much easier to gauge the stochastic frontier model is justified as the chosen methodology for estimating productive efficiency levels and is applied to cross sectional data under a variety of distributional assumptions a panel data model is also estimated results are consistent and su

consistency in performance rankings the peru water sector regulators can utilize a number of alternative methodologies for comparing firm efficiency but these approaches need to be robust to be accepted by stakeholders this study evaluates the consistency of water utility performance rankings for peruvian water utilities the results indicate that data envelopment analysis dea and stochastic frontier analysis sfa yield similar rankings in this case in addition the techniques have comparable success for identifying the best and worst performing utilities however these rankings based on sophisticated statistical techniques are not highly correlated with those developed by the peruvian water regulator sunass this result does not invalidate the performance rankings obtained by the regulator since those rankings are based on more dimensions of utility performance however they illustrate the importance of developing sound techniques for identifying weak utilities improvements in sector performance require that benchmarking be given greater attention t

regulatory measurement and evaluation of telephone service quality regulators of utilities that operate as local monopolies would like to set prices or allow rates of return based upon the quality of a utility s service however quality is highly multidimensional traditionally regulators have collected measures of quality on many separate dimensions and compared performance on these dimensions to explicit pass fail standards they have lacked a method of combining complex patterns of substandard and superstandard performance on these many dimensions to arrive at an overall evaluation of the quality of service to redress this problem we first describe the information processing problems regulators encounter when they attempt to integrate this complex array of information intuitively and the problems that arise when the link between service quality as reflected in patterns of passed and failed standards and regulatory incentives is not made explicit to utility management we develop a bootstrapped method for formalizing each expert regulator s evaluation policy us

technical efficiency of european railways a distance function approach this study has two principal objectives the first objective is to measure and compare the performance of european railways the second objective is to illustrate the usefulness of econometric distance functions in the analysis of production in multioutput industries where behavioural assumptions such as cost minimization or profit maximization are unlikely to be applicable using annual data on 17 railways companies during 1988 1993 multioutput distance functions are estimated using corrected ordinary least squares cols the resulting technical efficiency estimates range from 0 980 for the netherlands to 0 784 for italy with a mean of 0 863 the distance function results are also compared with those obtained from single output production functions where aggregate output measures are formed using either total revenue or a tornqvist index the results obtained indicate substantial differences in parameter estimates and technical efficiency rankings casting significant doubt upon the reliability of

the efficiency of museums a stochastic frontier production function approach this article examines the technical efficiency of museums based upon data derived from a questionnaire survey of south west england a stochastic frontier production function is estimated with output measured in terms of visitor numbers the cobb douglas function is shown to be the best representation of the production function average levels of efficiency are estimated to be fairly low at 45 5 with wide variations across museums the results indicate that high levels of public funding and voluntary activity have a significantly negative impact on technical efficiency it is argued that further research is needed to develop more sophisticated measures of the output of cultural industries and understand the economic importance of volunteers

taxing the informal economy the current state of knowledge and agendas for future research abstractthis paper reviews the literature on taxation of the informal economy taking stock of key debates and drawing attention to recent innovations conventionally the debate on whether to tax has frequently focused on the limited revenue potential high cost of collection and potentially adverse impact on small firms recent arguments have increasingly emphasised the more indirect benefits of informal taxation in relation to economic growth broader tax compliance and governance more research is needed we argue into the relevant costs and benefits for all including quasi voluntary compliance political and administrative incentives for reform and citizen state bargaining over taxation

an examination of the effect of ownership on the relative efficiency of public and private water utilities the behavior of privately and publicly owned water utilities is examined by estimating a generalized variable cost function containing the regular characteristics of the neoclassical cost function without requiring that cost minimization subject to market prices be imposed as a maintained hypothesis assuming that unobserved shadow prices reflect the regulatory environment of the water industry tests for cost minimization are obtained by deriving shadow prices as functions of market prices the empirical results provide evidence that public water utilities are more efficient than private utilities on average but are more widely dispersed between best and worst practice

on the in efficiency of swiss hospitals the efficiency of hospitals is of interest to health insurers government authorities and hospital management itself however econometric methods for determining in efficiency have severe drawbacks since hospitals are multiproduct firms and because the duality between production and cost functions cannot be assumed in this work non parametric deterministic data envelopment analysis dea is used to measure the relative inefficiency of 89 swiss hospitals covering the years 1993 1996 310 observations special attention is given to the role of patient days in the production of health the findings depend on whether patient days are viewed as an input of patient time or as an output as in previous studies while the probability of a unit being inefficient cannot be explained using the available data the degree of overall inefficiency is shown to significantly depend on the financial incentives faced by management in particular due to subsidization private hospitals do not seem to be less inefficien

determinants of technical efficiency of crop and livestock farms in poland la pologne est l un des pays d europe de l est candidats a une accession a l union europeenne qui rencontre de graves problemes de restructuration agricole l article etudie l efficacite technique en 2000 d exploitations agricoles individuelles polonaises specialisees en elevage et en grandes cultures l efficacite est estimee par la methode de frontiere stochastique et sa variabilite statistique evaluee par la construction d intervalles de confiance l article examine egalement les determinants de l efficacite les resultats obtenus pas la methode de frontiere stochastique sont compares avec ceux obtenus par la methode de data envelopment analysis dea en moyenne l efficacite technique des exploitations d elevage est superieure a celle des exploitations de grandes cultures pour les deux specialisations la relation entre l efficacite et la taille des exploitations est positive les grandes exploitations sont les plus efficaces les resultats obtenus par la methode de frontiere stochastique sont generalement confirmes par la methode dea la qualite de la terre et le degre d integration dans les marches d aval sont d importants determinants de l efficacite la faible education est un obstacle majeur a l efficacite en particulier pour les exploitations de grandes cultures de plus celles ci utilisent beaucoup les marches de facteurs terre et travail alors que les exploitations d elevage utilisent plutot leurs propres terres et le travail familial