cost efficiency and optimal scale of electricity distribution firms in taiwan an application of metafrontier analysis abstract this paper analyzes the cost efficiency and optimal scale of taiwan s electricity distribution industry due to the substantial difference in network density firms may differ widely in production technology we employ the stochastic metafrontier approach to estimate the cost efficiency of 24 distribution units during the period 1997 2002 empirical results find that the average cost efficiency is overestimated using the traditional stochastic frontier model especially for low density regions the average cost efficiency of the high density group is significantly higher than that of the low density group as it benefits from network economies this study also calculates both short term and long term optimal scales of electricity distribution firms lending policy implications for the deregulation of the electricity distribution industry

contracting with wealth constrained agents we examine how a project owner optimally selects a project operator and motivates him to deliver an essential noncontractible input e g effort when potential operators are privately informed about their limited wealth truthful revelation of wealth is induced by promising a higher probability of operation and if necessary a greater share of realized profit the larger the nonrefundable bond that a potential operator posts the project owner benefits when total wealth is widely dispersed among potential operators under plausible conditions limited knowledge of wealth is not constraining for the project owner

hume s specie flow mechanism and classical monetary theory an alternative interpretation abstract hume s celebrated essay on the international distribution of money has always been criticized for ignoring the law of one price contrary to the traditional interpretation however hume actually maintains that law and argues for the stability of long run equilibrium putting money market equilibrium in the foreground his analysis is essentially founded on the same hypothesis as the modern monetary approach albeit focusing on the supply rather than on the demand side of the money market

profitability and productivity changes in the korean electricity industry abstract the korean electricity industry saw significant changes following the reform in april 2001 until the last decade the industry was monopolized by the korea electric power corporation kepco a state owned vertically integrated company the 2001 reform divided kepco s power generation division into six power generation companies gencos with the aim of improving efficiency and introducing competition in the electricity industry in this study we used capital total factor productivity ktfp to analyze profit changes from fixed input capital and an index number profit decomposition inpd to examine the sources of the profit changes we investigate the industry thoroughly from three points of view the overall industry over time the power generation sector by company and the transmission and distribution sectors of the korea electric power corporation kepco next we measured how the profits from productivity growth were distributed to consumers fuel suppliers employees and company owners the results suggest that a more reasonable price system for both wholesale and consumer prices needs to be implemented prior to the privatization and deregulation of the korean electricity industry

the form of incentive contracts agency with moral hazard risk neutrality and limited liability the analysis obtains a complete characterization of the optimal agency contract with moral hazard risk neutrality and limited liability we introduce a critical ratio that indicates the returns to providing the agent with incentives for effort in each random state the form of the contract is debt a capped bonus when the critical ratio is increasing decreasing in the state an increasing critical ratio in the state space setting corresponds to the hazard rate order for the reduced form distribution of output which we term the decreasing hazard rate in effort property dhrep the critical ratio also yields insights into agency with adverse selection

have regulatory reforms improved the efficiency levels of the japanese electricity distribution sector a cost metafrontier based analysis abstract in order to identify the kinds of impacts that japanese regulatory reforms in the electric power industry have had on the efficiency levels of the electrical distribution sector the present study assembles a dataset which spans both pre and post regulation periods further to make the estimated efficiency scores from the two sub periods comparable the study applies metafrontier frameworks proposed by o donnell et al 2008 and huang et al 2014 to the cost function in the longitudinal setting estimates from both methods show that the average efficiency score of the electrical distribution sector during the whole sample period is relatively low further findings also demonstrate that the efficiency levels after the regulatory reforms are lower than those before the regulatory reforms to this surprising and unexpected phenomenon we argue that cross subsidization may be one reason for this kind of changing pattern in efficiency levels in order to deal with the relatively low efficiency problem we also suggest that japanese regulators should introduce more incentive based regulatory tools to replace the current rate of return regulation

limited liability and incentive contracting with ex ante action choices abstract this article examines a principal agent model of financial contracting in which a risk neutral entrepreneur agent makes an unobservable ex ante effort choice while employing the investment funds of a risk neutral investor principal the key innovation is that the investment contract is subject to statutory liability limits given these liability limits two settings are considered one in which the investor payoff function is also constrained to be monotonically nondecreasing in firm profit and another in which no such monotonic contract constraint is imposed in the former case a standard debt contract is shown to emerge and a first best effort choice is not achieved in the latter setting the optimum is characterized by a live or die payoff function and a first best effort level may or may not be realized

quality of service efficiency and scale in network industries an analysis of european electricity distribution quality of service qos is of major economic significance in natural monopoly infrastructure industries in this article we present an efficiency analysis of electricity distribution networks from seven european countries we apply the stochastic frontier analysis method to multi output translog input distance function models to estimate cost efficiency and scale economies we show that introducing the quality dimension into the analysis affects estimated efficiency significantly especially that smaller utilities efficiency seems to decrease our results emphasize that qos should be an integrated part of efficiency and economic analysis of regulated natural monopolies

ex post participation constraint in a principal agent model with adverse selection and moral hazard abstract this paper analyzes optimal contracting when an agent has private information before contracting and exerts hidden effort that stochastically affects the output additionally the contract is constrained to satisfy the agent s ex post participation we highlight three features of this model first the agent faces countervailing incentives second the separation of types is never optimal third the optimal constant bonus rewarding success is distorted downward below its efficient level

examining the cost efficiency of chinese hydroelectric companies using a finite mixture model this paper evaluates the operational activities of chinese hydroelectric power companies over the period 2000 2010 using a finite mixture model that controls for unobserved heterogeneity in so doing a stochastic frontier latent class model which allows for the existence of different technologies is adopted to estimate cost frontiers this procedure not only enables us to identify different groups among the hydro power companies analysed but also permits the analysis of their cost efficiency the main result is that three groups are identified in the sample each equipped with different technologies suggesting that distinct business strategies need to be adapted to the characteristics of china s hydro power companies some managerial implications are developed

technical efficiency of french nuclear energy plants this article analyses the efficiency of french nuclear energy plants belonging to edf electricity of france from 2004 to 2008 with a dea data envelopment analysis model the convexity model is used to investigate the technical efficiency of a representative sample of nuclear plants the results indicated that some plants have undergone an improvement in technical efficiency while others have regressed in terms of technical efficiency policy implications related to the results are discussed

pharmaceuticals and the developing world pharmaceuticals have greatly improved health in developing countries but many people in developing countries do not obtain even inexpensive pharmaceuticals and little pharmaceutical r d is oriented toward products needed by developing countries such as a malaria vaccine access to existing products could be improved by facilitating differential pricing for example by subsidizing donation programs and reforming health care delivery r d incentives could be improved if rich countries or international organization committed to purchase needed products when they are developed and make them available to the poor

an examination of the equilibrium specification and structure of production for canadian telecommunications multiple output models of canadian telecommunications production are estimated under different production equilibria a specification test is conducted between the short and long run equilibrium models and the long run equilibrium is rejected in order to capture the nature of the disequilibrium a dynamic cost of adjustment model is estimated for bell canada there are significant adjustment costs and it is estimated that for 1 00 of marginal capital costs the carrier must incur an additional cost of 0 30 to install the new capital into the production process

regulation moral hazard and insurance of environmental risks abstract a large class of major environmental risks are subject to severe moral hazard problems the purpose of this paper is to study the potential conflicts between cost minimization and safety care the intuition is that regulatory efforts or sheer competition inducing a greater focus on cost minimization may tilt the agents trade off towards taking too much risk here we study the problem in the context o regulation of a natural monopoly and see how high powered incentives may conflict with safety care we address the issue of moral hazard in environmental risk with adverse selection limited liability risk aversion and multiprincipals

push or pull performance pay incentives and information we study a principal agent model wherein the agent is better informed of the prospects of the project and the project requires both an observable and unobservable input we show 1 performance pay may not be optimal even if output is the only informative signal of an essential input 2 total surplus tends to be higher if one input is unobservable than if both inputs are observable and 3 bunching may arise amongst low and intermediate types we explore the implications for push and pull programs used to encourage r d activity but our results have applications beyond this context

on the measurement of capacity utilization capacity utilization is usually defined as the ratio of actual output to the output corresponding to 1 the minimum point on the short run average total cost curve and 2 the point of tangency between the long run average total cost and short run average total cost curves in practice however capacity utilization is often measured as the ratio of actual to the maximum potential output consistent with a given capital stock this paper demonstrates how to estimate the theoretical measures of capacity utilization and examines the correlation between three measures of capacity utilization and the mcgraw hill estimates of capacity utilization using data from a sample of u s privately owned electric utilities for 1961 83 copyright 1989 by blackwell publishing ltd

incentivizing r d prize or subsidies abstract this paper studies the optimal design of r d contests a sponsor e g the us department of defense or the world health organization wants to improve the quality of the winning products to do so it partitions its budget between two schemes an inducement prize and efficiency enhancing subsidies to the firms competing in the contest prizes and subsidies have different functions and they provide complementary incentives in the optimally designed contest subsidies increase while the prize decreases if the innovation process is more challenging further sensible conditions are identified under which the optimal contest implements either a handicapping scheme by preferentially subsidizing the underdog or a national champion scheme by favoring the favorite our analysis yields a number of useful implications and sheds light on an array of r d incentive schemes such as the dod s design competitions and vaccine development incentives

the power of incentives variable pay is usually defined as pay that is tied to some measure of worker output the most typical form of variable pay historically was the piece rate which was more prevalent during the early part of the 20th century than it is at the beginning of the 21st there is a resurgence in variable pay particularly as it relates to executives whose pay is tied to output through some mechanism like stock options or bonuses that depend on individual or firm performance why use variable pay the typical reaction is that variable pay provides incentives to put forth effort although true discrete pay schemes also generate incentives much of the confusion in the literature results from the use of the terms high powered and low powered incentives which connote difference in ability to elicit worker effort it is more informative to make distinctions between discrete and continuous pay and between inputbased and output based pay 2 pay structures can be summarized by the following equation

returns to scale from variable and total cost functions abstract estimates of the returns to scale from a variable cost function evaluated at the actual and optimal capital stocks and a total cost function are presented the estimates generally differ depending in part upon the output at which they are evaluated

sources of production inefficiency and productivity growth in china a global data envelopment analysis abstract the current mode of production in china is extensive and inefficient and has caused great stress on both resources and the environment this paper focuses on analyzing the sources of production inefficiency and productivity growth in china here a developed slacks based measure is utilized to decompose production inefficiency into three components input inefficiency economic output inefficiency and environmental inefficiency furthermore by applying a method based on global data envelopment analysis we take a further step to analyze the key factors responsible for the change of environmental productivity during 2003 2011 from the point of view of technical progress productive scale and management level the results show that redundancy in energy and labor inputs and excessive emission of sulfur dioxide chemical oxygen demand and ammonia nitrogen are the main sources of production inefficiency in china during the sample period the efficiency in all inputs and environmental emissions has improved except for capital input efficiency which had a decreasing trend further analysis shows that the overall environmental productivity in china has begun to follow an ascending path technical progress is the most powerful contributor to china s productivity growth while the decreases in scale and management efficiency are the two main obstacles preventing productivity improvement

estimating the marginal cost of quality improvements the case of the uk electricity distribution companies the main aim of this paper is to develop an econometric approach to estimation of marginal costs of improving quality of service we implement this methodology by way of applying it to the case of the uk electricity distribution networks the estimated marginal costs allow us to shed light on the effectiveness of the current uk incentive regulation to improve quality and to derive optimal quality levels and welfare losses due to sub optimal quality levels the proposed method also allows us to measure the welfare effect of the observed quality improvements in the uk between 1995 and 2003 our results suggest that while the incentive schemes established by the regulator to encourage utilities to reduce network energy losses leads to improvement in sector performance they do not provide utilities with sufficient incentives to avoid power interruptions we find that the observed improvements in quality during the period of this study only represented 30 of the potential customer welfare gains and hence there was still significant scope for quality improvements

monopoly with incomplete information recent theoretical research on principal agent relationships has emphasized incentive problems that arise when the parties involved are constrained by either asymmetric information or their inability to monitor each other s actions here we concentrate on the former constraint and consider the case of a single principal the monopolist the main contribution is to show that under a separability assumption strong conclusions can be drawn about the nature of optimal incentive schemes although the primary focus is on optimal quantity discounts in a monopolized market the results also shed light on related topics such as optimal income taxation and commodity bundling

productivity change technical progress and relative efficiency change in the public accounting industry we present evidence on components of productivity change in the public accounting industry toward the end of the 20th century using revenue and human resource data from 64 of the 100 largest public accounting firms in the united states for the 1995 1999 period we analyze productivity change technical progress and relative efficiency change over time the average public accounting firm experienced a productivity growth of 9 5 between 1995 and 1999 we find support for the hypothesis that technical progress rather than an improvement in relative efficiency was the reason for this productivity growth firms that were early movers into management advisory services mas and those that emphasized growth in mas over growth in the traditional audit and tax services enjoyed significantly higher productivity growth than their peers these firms also contributed significantly more to the industry s technical progress

efficiency and regulation of the slovenian electricity distribution companies abstract the slovenian energy law adopted in 1999 has opened the internal market to competition up to 64 of the final consumption the opening of the internal market to foreign competition is envisaged for 2003 with regard to the methodology of price regulation the energy law introduces the price cap regulation which aims to give firms incentive for cost reduction to provide information for effective price regulation we estimated a cost frontier function on a sample of slovenian electricity distribution utilities over the 1991 2000 period the estimated efficient frontier could be used by slovenian regulatory agency as a benchmark to regulate network access prices our results show that slovenian distribution companies are cost inefficient we have also proved the presence of increasing returns to scale with most utilities not achieving the minimum efficient scale thus the slovenian regulatory authority should consider how to induce mergers of small electricity distribution utilities into larger units

the provision of incentives in firms i ncentives are the essence of economics despite many wide ranging claims about their supposed importance there has been little empirical assessment of incentive provision for workers the purpose of this paper is to critically overview existing work on the provision of incentives since the interests of workers and their employers are not always aligned a large theoretical literature has emphasized how firms design compensation contracts to induce employees to operate in the firm s interest this literature has reached into many areas of compensation and has pointed to a multitude of different mechanisms that can be used to induce workers to act in the interests of their employers these include piece rates options discretionary bonuses promotions profit sharing efficiency wages deferred compensation and so on my objective here is to evaluate this literature in the light of a growing empirical literature on compensation where possible i will address the literature from two perspectives first an underlying assumption of this literature is that individuals respond to contracts that reward performance accordingly i consider whether agents behave in this way and whether these responses are always in the firm s interest second i address whether firms write contracts with these responses in mind in other words do contracts look like the predictions of the theory incentives are provided to workers

a reinterpretation of classical monetary theory relevance to current policy issues is usually not the motivation for studying the history of economic theory however questions about the practicality of conducting monetary policy in a deregulated financial system by controlling the monetary aggregates are stimulating interest in convertibility as an alternative to our present monetary arrangements 3 6 66 since classical writers were mainly concerned with monetary theory and policy under a gold standard it is to be expected that renewed attention will be devoted to classical monetary theory my aim in this paper is to show that contrary to received views about classical monetary theory it was not based on the quantity theory of money on the contrary it was based on a theory of a convertible competitively produced money supply that was fundamentally different from the quantity theory using the modern theory of a competitive money supply we can now rigorously derive many of the basic propositions of classical monetary theory that have been denied or misunderstood by modern theorists operating within the framework of the quantity theory received views about classical monetary theory can be summarized by the following propositions

all or nothing monitoring comment zhao 2008 presents an interesting all or nothing monitoring result for a multitask moral hazard agency problem with partial effort observation we argue that the optimal contract based on the non verifiable observation of the agent s effort in zhao 2008 can be regarded as a limitation on the incentive schemes available to the principal i then propose some arguably more appropriate approaches for analyzing such agency problems d82 d86 m54

the tenuous trade off between risk and incentives empirical work testing for a negative trade off between risk and incentives has not had much success the data suggest a positive relationship between measures of uncertainty and incentives rather than the posited negative trade off i argue that the existing literature fails to account for an important effect of uncertainty on incentives through the allocation of responsibility to employees when workers operate in certain settings firms are content to assign tasks to workers and monitor their inputs by contrast when the situation is more uncertain they delegate responsibility to workers but to constrain their discretion base compensation on observed output

salaries and piece rates compensation can take many forms remuneration can come as pecuniary payments as fringes such as health and pension benefits or as a nonpecuniary reward such as plush office furniture that costs the firm less than it benefits the worker a significant literature has examined the trade offs between pecuniary and nonpecuniary compensation the modern work having been pioneered by rosen 1974 more recently another body of literature has examined the selection of method of total compensation ignoring the distinction between pecuniary and nonpecuniary payment this work has focused on risk and incentive factors it has resulted in comparisons of compensation based on absolute output levels to that based on relative performance it has also led to explorations of the relation of compensation to experience over the work life 2 little attention has been paid to what may be among the most important and obvious distinction in methods of compensation namely the choice between a fixed salary for some period of time that is paying on the basis of input and some workers receive compensation that is specified in advance and not directly contingent on performance instead it depends on an input measure such as hours worked for others compensation is directly related to output this essay is an attempt to predict a firm s choice of compensation method piece rates are defined more rigorously among the more important factors discussed are worker heterogeneity incentives sorting considerations monitoring costs and asymmetric information one result is that salary workers tend to be of lower quality and more homogeneous than are their piece rate counterparts numerous additional results are provided helpful comments by victoria lazear and yoram weiss are gratefully acknowledged support was provided by the department of labor and the national science foundation 1 see lazear and rosen 1981 stiglitz 1981 holmstrom 1982 green and stokey 1983 2 see lazear 1979 1981 and harris and holmstrom in press

measurement of environmentally sensitive productivity growth in korean industries this study measures productivity growth using the metafrontier malmquist luenberger productivity growth index mml index method and decomposes the index the results are compared with those obtained from the conventional malmquist luenberger ml productivity growth index mml has two advantages compared with the ml index the former is able to consider undesirable output as a by product of production which accounts for producer group heterogeneities as a result it enables separation and estimation of changes in the technological gap between regional and global frontier technologies the proposed index is employed to measure productivity growth and decompose its components in 14 korean industrial sectors during the period between 1981 and 2007 for the purpose of detailed analysis of policy effects the study period was divided into three decades the results show that technology innovation can be regarded as a more important factor of productivity growth rather than efficiency change the chemical and petrochemical machinery and transport equipment industries are treated as global innovators in the whole period however the result differs according to decades it is found that the groups with higher energy efficient technology and profitability obtain a higher productivity growth rate in comparison with their low energy efficient technology industry counterparts policy implications of the empirical results are discussed

retrospectives hume on money commerce and the science of economics david hume 1711 1776 is arguably the most esteemed philosopher to have written in the english language during his lifetime however hume was as well if not better known for his contributions to political economy particularly for the essays published as the political discourses 1752 hume left his mark on the economic thought of the physiocrats the classical economists and the american federalists adam smith who met hume circa 1750 was his closest friend and interlocutor for some 25 years among modern economists hume s essays on money and trade have informed theorists of both keynesian and monetarist persuasions in this essay we begin by discussing hume s monetary economics and then spell out his theory of economic development noting his qualified enthusiasm for the modern commercial system we end with an assessment of his views on the scientific standing of economics specifically his counterintuitive argument that economics could be epistemologically superior to physics

decomposition of the environmental inefficiency of the meta frontier with undesirable output abstract in this paper we present an alternative analysis framework to evaluate the effects of technology heterogeneities and undesirable output on environmental efficiency measurement the proposed framework combines the directional distance function and a meta frontier analysis it can be used to measure efficiency improvements brought about by enhanced technical management and technological advances for demonstration purposes we used the framework to measure the environmental efficiency in 90 countries worldwide for the 2003 2007 period the results showed that when the meta technology set is used as the evaluation basis the average environmental efficiency of high competitiveness countries is greater than that of lower middle low and upper middle competitiveness countries the upper middle competitiveness countries perform worse than the lower middle and low competitiveness countries because of the excessive labor force usage and carbon dioxide emissions in these countries we also found that the environmental inefficiency of the meta frontier for high competitiveness countries can be attributed to managerial failure in the production process whereas that for upper middle lower middle and low competitiveness countries can be attributed to technological differences

cantillon and hume on money and banking the foundations of two theoretical traditions the distinction between the classical monetary theory and quantity theory has been proposed in literature on money and banking the overall feature of the classical theory of money is that it holds one principle of regulation for each kind of issue metallic money bank issues and paper money whereas the quantity theory applied the causality and proportionality postulates for all kinds of monies without claiming to adjudicate the validity of such a distinction the paper investigates the foundation of each tradition in this respect this paper respectively examines and provides a survey of the secondary literature on cantillon s essai and the hume s discourses

impact of energy efficiency policy to productive efficiency of electricity distribution industry in the philippines abstract the study analyzes the productive efficiency and simulates the effect of the energy efficiency policy on the productive efficiency of the electricity distribution industry in the philippines using data envelopment analysis dea the study finds that the main source of technical inefficiency in the distribution utilities is scale inefficiency moreover the study finds that with dsm electricity savings targets the technical efficiency of the industry would slightly improve significant improvement of technical efficiency is furthermore found with system loss reduction targets the paper concludes that the energy efficiency policy which benefits the overall economy and whole electricity supply industry results also in productive efficiency improvement in the distribution sector of the industry

benchmarking and incentive regulation of quality of service an application to the uk electricity distribution networks abstract quality of service has emerged as an important issue in post reform regulation of electricity distribution networks regulators have employed partial incentive schemes to promote cost saving investment efficiency and service quality this paper presents a quality incorporated benchmarking study of the electricity distribution utilities in the uk between 1991 92 and 1998 99 we calculate technical efficiency of the utilities using data envelopment analysis technique and productivity change over time using quality incorporated malmquist indices we find that cost efficient firms do not necessarily exhibit high service quality and that efficiency scores of cost only models do not show high correlation with those of quality based models the results also show that improvements in service quality have made a significant contribution to the sector s total productivity change in addition we show that integrating quality of service in regulatory benchmarking is preferable to cost only approaches

the meta production function approach to technological change in world agriculture abstract an alternative meta production function for agriculture is estimated with the cross section data for 43 countries and three years 1960 1970 and 1980 constructed and used by kawagoe hayami and ruttan and hayami and ruttan in their studies by allowing for country specific efficiency factors and using a flexible functional form the transcendental logarithmic production function strikingly different results from those of kawagoe hayami and ruttan are obtained in particular it is found that elasticity of output with respect to machinery is variable and the degree of local returns to scale is not constant and increases with the usage of machinery

input substitution economies of scale and productivity growth in the us upholstered furniture industry cost factor demand and productivity growth are considered in the upholstered furniture industry over 1958 87 factors are divided into labour capital and materials it is found that all inputs are substitutes in production although substitution elasticities are small factor demand is price inelastic for all inputs the industry operates around minimum average cost productivity growth is small but significant the results indicate that labour will continue to be important in the industry however regional comparative advantage is not related to labour alone the results suggest that policies to attract or retain the industry must consider the low degree of factor substitution

using cost observation to regulate firms the paper emphasizes the use of accounting data in regulatory or procurement contracts when the supplier 1 has superior information about the cost of the project and 2 invests in cost reduction the main result states that under risk neutrality the supplier announces an expected cost and is given an incentive contract linear in cost overruns this optimal contract moves toward a fixed price contract as the announced cost decreases an investment choice is then introduced and the use of a rate of return regulation is studied

patents and patent policy a patent is the legal right of an inventor to exclude others from making or using a particular invention this right is sometimes termed an intellectual property right and is viewed as an incentive for innovation this article surveys the evidence on patent effectiveness in encouraging innovation and reviews the current controversies in patent policy

motivating wealth constrained actors we examine how owners of productive resources e g public enterprises or financial capital optimally allocate their resources among wealth constrained operators of unknown ability optimal allocations exhibit 1 shared enterprise profit the resource owner always shares the operator s profit 2 dispersed enterprise ownership resources are widely distributed among operators of varying ability 3 limited benefits of competition the owner may not benefit from increased competition for the resource and sometimes 4 diluted incentives for the most capable more capable operators receive smaller shares of the returns they generate implications for privatizations and venture capital arrangements are explored

market power screens willingness to pay what is the best way to reward innovation while prizes avoid deadweight loss intellectual property selects high social surplus projects optimal innovation policy thus trades off the ex ante screening benefit and the ex post distortion it solves a multidimensional screening problem in the private information held by the innovator research cost quality and market size of the innovation the appropriate degree of market power is never full monopoly pricing and is determined by measurable market characteristics the inequality and elasticity of innovation supply making the analysis open to empirical calibration the framework has applications beyond ip policy to the optimal pricing of platforms or the optimal procurement of public infrastructure

how broad should the scope of patent protection be i explore the trade off between a patent s length that is its lifetime and its width that is its scope of coverage a wider patent generally reduces the distortion of consumers choices between the patented brand of the product and unpatented lower priced varieties sold by competitors but also permits higher prices which increase relative to profits the deadweight losses from consumers switching consumption out of the product class i show under what conditions infinitely lived but very narrowly focused patents are the socially efficient way to reward innovation and under what conditions very short lived but very broad patents are optimal

a general index of technical change this paper outlines a procedure for estimating a general index of technical change within the context of a quite general production technology specifically when panel data are available for firms in an industry time specific dummies can be combined in a nonlinear estimation procedure to yield a general index of technical change that may be both nonneutral and scale augmenting this approach offers numerous advantages over the traditional time trend representation of technical change for example the general index can serve as the basis for analysis of the determinants of technical change results for a sample of 30 electric utilities over the period 1951 78 show that the productivity decline of the 1970s can be attributed primarily to sulphur oxide restrictions and secularly declining capacity utilization due to rapidly increasing peak load demands

countervailing incentives in agency problems abstract we analyze countervailing incentives in agency problem countervailing incentives exist when the agent has an incentive to understate his private information for some of its realizations and to overstate it for others when countervailing incentives arise pooling generally characterizes the equilibrium contract furthermore performance is distorted both above and below efficient levels in addition the agent s rents generally increase with the realization of his private information over some ranges and decrease over other ranges we demonstate that the creation of countervailing incentives can enhance aggregate welfare

price cost margins exports and productivity growth with an application to canadian industries a model is estimated for oligopolistic industries producing multiple outputs in short run equilibrium outputs are sold domestically and exported while capital is treated as a quasi fixed factor the model is applied to the canadian non electrical machinery electrical products and chemical products industries the results show that there is significant oligopoly power in each of the industries and that the degree of this power differs between the domestic and export markets total factor productivity is decomposed price cost margins exert little influence but the rate of technological change returns to scale and the rate of capital adjustment determine productivity growth

regional differences in electricity distribution costs and their consequences for yardstick regulation of access prices abstract in this paper we estimate an average cost function for a panel of 59 swiss local and regional electricity distribution utilities as a basis for yardstick regulation of the distribution network access prices shleifer 1985 proposed yardstick competition in terms of price to regulate local monopolies producing a homogeneous good the regulated price for the individual firms depends on the average costs of identical firms the yardstick competition concept can also be applied to firms that produce heterogeneous goods if these goods differ only in observable characteristics to correct the yardstick for heterogeneity the regulator can use a multivariate estimation of an average cost function in the case of electricity distribution the heterogeneity of output consists mainly of different characteristics of the distribution service areas in this paper we follow shleifer s suggestion to estimate a multivariate average cost function that can be employed by the regulatory commission to benchmark network access prices at the distribution level several exogenous variables measuring the heterogeneity of the service areas were included in the cost model specification we find that the regional differences of the service areas e g area shares of forests agricultural areas or unproductive land and population density significantly influence electricity distribution costs

productivity growth technical change and economies of scale of korean fossil fuel generation companies 2001 2012 a dual approach abstract this paper examines total factor productivity tfp growth technical change and economies of scale measure of korean fossil fuel power generation companies gencos between 2001 and 2012 for the empirical investigation we estimated the cost function along with specification tests in order to find the most appropriate empirical model empirical results show tfp deterioration technical regress and economies of scale for the study period the optimal size of the korean gencos was also found which is employed in developing policies regarding tfp growth and technical advance

all or nothing monitoring a principal can observe both the output and input of an agent who works at a job involving multiple tasks we provide a simple theory that explains why it may be optimal for the principal to use only an output based incentive contract even though the principal can monitor the agent s actions perfectly in all but one task and knows exactly which action is optimal for each task jel d82 d86 m54

total factor carbon emission performance of fossil fuel power plants in china a metafrontier non radial malmquist index analysis article i nfo this paper proposes the metafrontier non radial malmquist co2 emission performance index mnmcpi for measuring dynamic changes in total factor co2 emission performance over time the mnmcpi method allows for the incorporation of group heterogeneity and non radial slack into the previously introduced malmquist co2 emission performance index mcpi we derive the mnmcpi by solving several non radial data envelop ment analysis dea models we decompose the mnmcpi into an efficiency change ec index a best practice gap change bpc index and a technology gap change tgc index and based on the proposed indices we examine the dynamic changes in co2 emission performance and its decomposition of fossil fuel power plants in china for the 2005 2010 period the empirical results show a 0 38 increase in total factor co2 emission performance as a whole and a u shaped mnmcpi curve for the sample period because companies owned by the central government lack innovation and technological leadership the results suggest a missing link in the role of the central government in promoting co2 emission performance

cost structure and capacity in the norwegian pelagic fisheries the parameters of the short run cost function are estimated for three vessel types taking part in the norwegian pelagic fisheries purse seine vessels trawlers and coastal vessels the generalized translog functional form is used estimates of returns to scale are calculated and the results indicate that there are substantial economies of scale in all vessel classes it is further investigated whether excess capacity varies with vessel size and age the analysis suggests increased quotas per vessel to avoid rent dissipation with the total allowable catch given the number of participating vessels must be reduced

substitution possibilities for unpriced natural resources restricted cost functions for the canadian metal mining industry a bstract the effects of resource depletion on economic growth depend critically on the elasticities of substitution between non renewable natural resources and reproducible inputs estimation of the elasticities of substitution for natural resources has been hindered by the absence of data on their prices which results from the prevalence of vertical integration in natural resource industries in this paper we use the theory of restricted cost functions to develop a general procedure for estimating substitution possibilities for unpriced inputs estimation of the model with data for the canadian metal mining industry indicates that the elasticities of substitution for the natural resource metallic ore are equal to unity

david hume s monetary theory revisited was he really a quantity theorist and an inflationist david hume s monetary theory has been controversial since its formulation lately the focus has been on hume s alleged misapplication of the quantity theory of money while he appears to subscribe to a simple quantity theory with money neutrality in a famously contested passage in the essay of money he violates the neutrality condition by claiming that an increase in the money stock has favorable output effects while most commentators argue about the persistence of the output effect this paper suggests that we can derive an alternative understanding of hume s monetary thinking by recognizing that he made an analytical distinction between endogenous and exogenous money realization that only the former has a favorable output effect forces us to overturn the long standing consensus that hume instructed the government to use monetary or trade policy to engineer a gradually increasing money stock

the impact of environmental regulations on industry productivity direct and indirect effects abstract the paper develops an approach to measuring the impact of environmental regulations on total factor productivity growth which is less restrictive than a simple growth accounting approach environmental regulations have a direct impact on productivity growth due to the diversion of resources toward required abatement capital there can be a further indirect effect however as conventional inputs and production processes are changed in response to requirements to purchase abatement capital we estimate this indirect effect using a flexible functional form cost function total factor productivity and the direct and indirect productivity effects of environmental regulations are presented for five polluting industries we find that the indirect effect can be either positive or negative and in all industries is energy using the net impact of environmental regulations on total factor productivity growth is fairly small given that these are the most polluting industries they account for about 10 30 of the productivity decline of the 1970s in these industries

multi task incentive contract and performance measurement with multidimensional types abstract this paper provides a new explanation for the dominance of the low powered incentive contract over the high powered incentive contract using a hybrid model of moral hazard and adverse selection we first show that unobservable risk aversion or cost leads to low powered incentives we then consider the case where both risk aversion and cost of the agent are unobservable to the principal this multidimensional mechanism design problem is solved under two assumptions with regard to the structures of performance measurement system and wage contract it is shown that if the deterministic and stochastic components of performance measures vary proportionally the principal is inclined to provide a low powered incentive contract moreover it is shown that if the base wage depends on a quadratic function rather than the direction of the performance wage vector no incentive is provided for most of the performance measures in an orthogonal performance measurement system