a semiparametric approach to short term oil price forecasting abstract in this paper it is shown how the garch properties of oil price changes can be employed to forecast the oil price distribution over short term horizons the forecasting methodology is semiparametric and it is based on the bootstrap approach the results of an out of sample forecasting exercise carried out using the brent oil price series suggest that the forecasting approach can be used to obtain a performance measure for the forward price in addition to compute interval forecasts for the oil price

political determinants of government loans in japan abstract this paper examines the political determinants of government banks lending decisions using prefecture level panel data on japan s government loans from 1975 to 1992 it finds that the size of government loans is positively correlated with two political factors 1 the electoral vulnerability of politicians who belong to the ruling liberal democratic party ldp and 2 their seniority these political effects are statistically robust to the inclusion of prefecture fixed effects year fixed effects and other socioeconomic factors and more important are present only in government loans and not in private loans these results suggest that self interested ldp members ab used government loans for political purposes as implied by the political view of government banks

turkish bank efficiency bayesian estimation with undesirable outputs this paper analyzes the productivity and efficiency of turkish banks from 2002 to 2010 we obtained estimates of efficiency productivity growth and efficiency growth using a bayesian stochastic frontier approach and focused on accounting for non performing loans npls for use in our model specifically we introduce npls as a bad output in an input distance function and estimate a system of non linear equations subject to endogeneity we confirm that the productivity growth of turkish banks was positive over the period of this study which was mainly due to the improvement in technology while efficiency growth continued to be negative over the same period methodologically we also prove that not accounting for npls in estimating the frontier model might seriously distort the efficiency and productivity results the study also provides measures of shadow prices for npl and discusses the results in terms of several interesting trends in turkish banking finally the paper provides efficiency and productivity comparisons between domestic and foreign banks

an analysis of technological change factor substitution and economies of scale in manufacturing industries in india the biases of technological change factor substitution and economies of scale in four major manufacturing industries viz cement electricity and gas cotton textiles and iron and steel in india are examined the translog cost functions are estimated using annual time series data covering the period 1960 61 to 1982 83 the study reveals that technical change has been biased towards the use of labour and materials and against the use of capital and energy in electricity and gas industries in cotton textiles the technological change has shown the opposity biases significant economies of sclae exist in the production of electricity and gas enough evidence of substitution possibilities among factors of production in all the four industries was also found

value at risk estimation with the optimal dynamic biofuel portfolio abstract in the past petroleum companies only paid attention to hedging the variation in the crude oil price and volatility however they have now expanded their analysis to encompass renewable sources such as corn and soybeans under the current low carbon biofuel obligations this paper employs garch 1 1 and arji models to estimate the one day ahead value at risk var of the optimal dynamic biofuel portfolio which consists of crude oil corn and soybeans the optimal blended standard is subject to the dual limitations of minimum production costs and the lowest biofuel using requirements our empirical findings confirm that the arji model is more suitable than the garch 1 1 model and further captures the discontinuous jump behavior from the in the sample data the results of out of sample forecasts also are represented that our models play important roles in var estimation and risk management for biofuel portfolio we therefore suggest that the petroleum companies should simultaneously pay attention to jump risk in hedging material costs in the prices of energy related crops

financial liberalization financial regulation and bank efficiency a multi country analysis this article investigates the impact of financial reforms on bank efficiency more specifically we distinguish between two different types of financial reforms i e financial liberalization measures and measures of the quality of bank regulation and supervision i e financial regulation and study their relationship to bank efficiency separately moreover we analyse whether the impact of financial liberalization on bank efficiency is conditional on the quality of regulation and supervision of the banking system we apply stochastic frontier analysis to calculate bank efficiency at the individual bank level and use a new and detailed database that measures different aspects of financial reforms the data set consists of 87 312 bank year observations covering 61 countries for the period 1996 2005 overall we show that the impact of financial liberalization policies on bank efficiency is conditional on the extent to which bank regulation and supervision has been adopted and developed

comparison of historically simulated var evidence from oil prices abstract cabedo and moya cabedo j d moya i 2003 estimating oil price value at risk using the historical simulation approach energy economics 25 239 253 find that arma with historical simulation delivers var forecasts that are superior to those from garch we compare the arma with historical simulation to the semi parametric garch model proposed by barone adesi et al barone adesi g giannopoulos k vosper l 1999 var without correlations for portfolios of derivative securities journal of futures markets 19 5 583 602 the results suggest that the semi parametric garch model generates var forecasts that are superior to the var forecasts from the arma with historical simulation this is due to the fact that garch captures volatility clustering our findings suggest that cabedo and moya s conclusion is mainly driven by the normal distributional assumption imposed on the future risk structure in the garch model

the evolution of cost productivity and efficiency among us credit unions abstract advances in information processing technology have eroded the advantages of small scale and proximity to customers that traditionally enabled small lenders to thrive nonetheless the membership and market share of us credit unions have increased though their average size has also risen we investigate changes in the efficiency and productivity of us credit unions during 1989 2006 by benchmarking the performance of individual firms against an estimated order quantile lying near the efficient frontier we construct a cost analog of the malmquist productivity index which we decompose to estimate changes in cost and scale efficiency and changes in technology we find that cost productivity fell on average across all credit unions but especially among smaller credit unions smaller credit unions confronted a shift in technology that increased the minimum cost required to produce given amounts of output all but the largest credit unions also became less scale efficient over time

controlling for the use of extreme weights in bank efficiency assessments during the financial crisis we propose a method for bank efficiency assessment based on weight restricted dea that limits banks abilities to use extreme weights corresponding to extreme judgements of the risk adjusted prices on funding sources and assets based on a data set comprising the largest european banks during the financial crisis we illustrate the impact of the proposed weight restrictions in two different efficiency models one related to banks funding mix and one related to their asset mix the results show that using a more balanced set of weights tend to reduce the estimated efficiency scores more for those banks which were bailed out during the crisis which confirms the potential bias within standard dea that does not control for extreme weights applied by highly risky banks we discuss the use of the proposed method as a regulatory tool to constrain discretion when complying with regulatory capital benchmarks such as the basel regulatory capital ratios

comparing malmquist and hicks moorsteen productivity indices exploring the impact of unbalanced vs balanced panel data abstract we explore the effect of balancing unbalanced panel data when estimating primal productivity indices using non parametric frontier estimators first we list a series of pseudo solutions aimed at making an unbalanced panel balanced then we discuss some intermediate solutions e g balancing 2 years by 2 years furthermore we link this problem with a variety of literatures on infeasibilities statistical inference of non parametric frontier estimators and the index theory literature focusing on the dynamics of entry and exit in industries we then empirically illustrate these issues comparing both malmquist and hicks moorsteen productivity indices on two data sets in particular we test for the differences in distribution when comparing balanced and unbalanced results for a given index and when comparing malmquist and hicks moorsteen productivity indices for a given type of data set the latter tests are crucial in answering the question to which extent the malmquist index can approximate the hicks moorsteen index that has a total factor productivity tfp interpretation finally we draw up a list of remaining issues that could benefit from further exploration

productivity and efficiency dynamics in indian banking an input distance function approach incorporating quality of inputs and outputs summary banking technology is typically characterized by multiple inputs and multiple outputs that are associated with various attributes such as different types of deposits loans number of accounts classes of employees and location of branches these quality differentials in inputs and outputs are mostly ignored in empirical studies these omissions make the practical value of productivity studies in organizations like banks questionable because quality is a key component of performance this paper proposes using hedonic aggregator functions as a tool of aggregating inputs and outputs with quality attributes within an input distance function framework and analyzes the impact of banking deregulation on efficiency and total factor productivity tfp change in the indian banking industry using panel data for the period 1996 2005 empirical results indicate that banks have improved their efficiency from 61 in 1996 to 72 in 2005 during the post deregulation period and the gain in efficiency of state owned banks has surpassed that of private banks improvement in capital base as indicated by increased capital adequacy ratio played an important role in ushering efficiency gain the return to scale estimate suggests that state owned banks are operating far above their efficient scale and cost savings can be obtained by reducing their size of operations overall tfp growth was above 3 5 annually both technical progress and technical efficiency change consistently played an important role in shaping tfp growth copyright 2010 john wiley sons ltd

institutions in european and asian energy markets a methodological overview abstract this article introduces a methodological framework to study institutions in european and asian energy markets with a comparative case study on the eu and east asia a distinction is made between informal and three types of formal institutions and their transaction cost reducing order creating and ecological climatic functions the operation of energy markets is explained through the structure of institutions their types and functions it is found that order creating institutions guarantee enough stability mutual trust and solidarity among eu member states to support the competitive markets institution and supranational formal institutions as the underpinnings of trade in the internal energy market which nevertheless retains some corporatist features in the east asian markets the nature of order creating institutions sovereignty energy diplomacy and great power management prevents the emergence of supranational formal institutions and a shared idea of trade the prevailing structure has a large number of sub regional organisations with overlapping tasks and few powers in both markets the functions of institutions signify more than their number transaction cost reducing institutions are dependent on order creating institutions while both of these functions are better realised on the regional level than ecological climatic functions ultimately informal institutions are most influential

value at risk estimation of energy commodities a long memory garch evt approach abstract in this paper we evaluate value at risk var and expected shortfall es for crude oil and gasoline market we adopt three long memory models including figarch hygarch and fiaparch to forecast energy commodity volatility by capturing some volatility stylized fact such as long range memory heteroscedasticity asymmetry and fat tails then we consider extreme value theory which concentrates on the tail distribution rather than the entire distribution evt is considered as a potential framework for the separate treatment of tails of distributions which allows for asymmetry our results show that the fiaparch model with extreme value theory performs better in predicting the one day ahead var using the fitted long memory garch model and a simulation approach to estimate var for horizons over than one day backtesting results show that our approach still performs for lower estimation frequencies overall our findings confirm that taking into account long range memory asymmetry and fat tails in the behavior of energy commodity prices returns combined with filtering process such as evt are important in improving risk management assessments and hedging strategies in the high volatile energy market

productivity in multiple output public service a quadratic frontier function and malmquist index approach abstract the purpose of this study is to analyse the development of productivity and structural efficiency for an extended period of time 1974 to 1987 in the production of public social insurance services in sweden the analysis is based on the estimation of a deterministic flexible single input multiple output frontier production function the findings indicate a productivity decrease for the entire period from 1974 to 1987 of 18 percent in the period 1974 to 1982 productivity decreased by approximately 30 percent but at the end of the period 1984 to 1987 there was a productivity recovery of about 11 percent

forecasting the var of crude oil market do alternative distributions help abstract accurate modeling of the empirical distribution of crude oil market returns is extremely important in estimating risk measures in addition to several commonly used distributions alternative distributions are explored in this study some of which account for the asymmetry and heavy tails simultaneously found in distributions and contain more tail parameters to separately depict the right and left tails when forecasting the value at risk var of crude oil markets during highly volatile periods seven backtests are also conducted to compare the var forecasting accuracy among different distributions the empirical results indicate that a highly volatile environment challenges the commonly used distributions and the four risk models based on commonly used distributions are rejected about 27 to 38 of the time the alternative distributions i e skewed general error distributions sged generalized hyperbolic skewed student t distributions ghst and generalized asymmetric student t gast distributions generally produce more accurate var measurement and gast gives the best measurement accuracy the empirical results imply that risk managers or policymakers should further consider more flexible distributions such as sged ghst or gast in particular when quantifying or managing the risk in turbulent market times

rationality of energy efficiency improvement targets under the pat scheme in india a case of thermal power plants abstract the market based perform achieve and trade scheme was introduced in india to enhance the energy efficiency of energy intensive sectors and for thermal power plants by reducing their specific energy consumption within the framework of a tradable certificate scheme international experience suggests that effectiveness of such schemes is greatly influenced by the assigned targets of the obligated units setting rational targets is thus a key aspect of successful implementation of the scheme in the present study we examine the rationality of the targets set for the power sector of india based on comparing it with energy saving potential of the plants and the targets assigned to the respective plants data envelopment analysis models are used to determine relative efficiency and energy saving potential the study results indicate that in most cases i the targets are much less than the actual potentials of the thermal power sector ii there exist substantial inefficiencies within the system in both energy use and managerial dexterity and iii if the sector realizes its full potential then the energy saving certificate market may witness a surplus of 4 7 million certificates on account of thermal power sector alone

exploring the challenges of energy and resources network governance while a growing amount of literature has recently emerged describing network governance less attention has been paid to evaluating the actual performance of networks our paper looks at the challenges facing network governance for natural resources primarily logging and forestry and energy primarily renewable energy and energy efficiency in asia the paper investigates what network governance is and what types of challenges networks have to tackle it then develops a qualitative analytical framework to evaluate the effectiveness of networks consisting of five criteria 1 clarity of roles and objectives among members 2 having strong independent continual sources of funding 3 institutional formality having a permanent secretariat budget full time staff etc 4 efficacy ability to accomplish its mission and goals at the least possible cost and 5 level of interdependency among members finally we apply this framework to four case studies the association of southeast asian nations asean centre for energy renewable energy and energy efficiency partnership reeep asean regional knowledge network on forests and climate change fcc and asean regional knowledge network on forest law enforcement and governance fleg these cases illustrate effective or ineffective environmental and energy networks and the factors that are associated with network governance

market risk in commodity markets a var approach we put forward value at risk models relevant for commodity traders who have long and short trading positions in commodity markets in a 5 year out of sample study on aluminium copper nickel brent crude oil and wti crude oil daily cash prices and cocoa nearby futures contracts we assess the performance of the riskmetrics skewed student aparch and skewed student arch models while the skewed student aparch model performs best in all cases the skewed student arch model delivers good results and its estimation does not require non linear optimization procedures as such this new model could be relatively easily integrated in a spreadsheet like environment and used by market practitioners

financial deregulation and total factor productivity change an empirical study of turkish commercial banks abstract in january 1980 a new liberal economic policy was adopted in turkey to promote financial market development and increase the efficiency and productivity of the financial sector by fostering competition among banks as a result of this policy the turkish banking system witnessed a series of legal structural and institutional changes throughout the 1980s to enhance their competitive viability turkish banks responded by streamlining their operations and investing in new technology utilizing a dea type malmquist total factor productivity change index we examine productivity growth efficiency change and technical progress in turkish commercial banks during the deregulation of financial markets in turkey we found that all forms of turkish banks although in different magnitudes have recorded significant productivity gains driven mostly by efficiency increases rather than technical progress efficiency increases however were mostly owing to improved resource management practices rather than improved scales our results also indicate that private banks began to close their performance gap with public banks in the new environment

energy transitions in small scale regions what we can learn from a regional innovation systems perspective the prevalent theories in the debate on sustainability transitions have been criticised for not sufficiently addressing energy change processes at the local level this paper aims to enhance our understanding of local energy reorganisation processes drawing on the regional innovation systems ris approach we argue that local development dynamics result from the interaction of various subsystems science politics public administration industry finance intermediaries and civil society the analysis of the involved subsystems and their interaction shows how energy transitions are shaped by different individual and organisational actors as well as institutions on the local level empirical evidence from case studies on the german cities of emden and bottrop illustrates our theoretical conceptualisation of energy transitions we conclude by presenting characteristic interaction patterns for energy transition drawn from the two cases

who formulates renewable energy policy a swedish example a broad participation by stakeholders and an extensive reliance on expert advice are often seen as preconditions for a legitimate and successfully implemented renewable energy policy however we have lacked systematic data for testing this argument this article s contribution is to examine the actors who take part in the making of swedish energy policy with the help of data on the composition of various committees of inquiry over the last twenty years 1988 2009 swedish renewable energy policy is often characterised with words like pioneering and forerunner suggesting that the policy making process in this area engages many different experts and stakeholders our data give only some support to this argument results point to a noteworthy predominance of politicians civil servants and representatives of state agencies within the policy process producers of uranium and fossils based energy have been engaged more often than producers of renewable energy experts have played a prominent role but this is mostly due to the participation of expert bureaucrats rather than of scientists the study suggests that a better understanding of the making of energy policy both in sweden and elsewhere requires greater attention to the networks and role of various state employees

the nonparametric risk adjusted efficiency measurement an application to taiwan s major rural financial intermediaries in this article a nonparametric approach is used to incorporate risk into the measurement of technical efficiencies of the major financial intermediaries in rural taiwan risk is treated as a joint but undesirable output given the fact that various regulatory actions may prevent its free disposability three risk indicators nonperforming loans allowance for loan losses and risky assets are employed alternatively in the empirical work results suggest that all three risk constraints are binding regulations on controlling risky assets and loan loss reserves are effective but more burdensome than those on controlling loan quality

evaluating interval forecasts a complete theory for evaluating interval forecasts has not been worked out to date most of the literature implicitly assumes homoskedastic errors even when this is clearly violated and proceed by merely testing for correct unconditional coverage consequently i set out to build a consistent framework for conditional interval forecast evaluation which is crucial when higher order moment dynamics are present the new methodology is demonstrated in an application to the exchange rate forecasting procedures advocated in risk management

sensitivity analysis of efficiency and malmquist productivity indices an application to spanish savings banks abstract hypothesis testing and statistical precision in the context of non parametric efficiency and productivity measurement have been investigated since the early 1990s recent contributions focus on this matter through the use of resampling methods i e bootstrapping techniques however empirical evidence is still practically non existent this gap is more noticeable in the case of banking efficiency studies where the literature is immense in this work we explore productivity growth and productive efficiency for spanish savings banks over the initial post deregulation period 1992 1998 using data envelopment analysis dea and bootstrapping techniques results show that productivity growth has occurred mainly due to improvement in production possibilities and that mean efficiency has remained fairly constant over time the bootstrap analysis yields further evidence as for many firms productivity growth or decline is not statistically significant with regard to efficiency measurement the bootstrap reveals that the disparities in the original efficiency scores of some firms are lessened to a great extent

the comparative efficiency performance of small and large us commercial banks in the pre and post deregulation eras the purposes of this paper are twofold first to employ a flexible non parametric approach to contrast the productive efficiency of a sample of small and large banks in order to examine the relationship between size and productive performance in the banking industry second to investigate whether the relative efficiency performance of small and large banks has changed following the changes in the banking environment in the 1980s and to contrast the rate of technological change achieved by these two groups of banks over this time period the findings based on group specific frontiers suggest that in the pre deregulation environment small banks were more efficient than the large banks while in the deregulated environment small and large banks were equally efficient moreover the dispersion in the efficiency measures of the small banks is found to have increased substantially while that of the large banks changed little over the sample period

the missing link between innovation and performance in brazilian firms a panel data approach abstractthis study aims to verify if there is a positive relationship between innovation and productivity and or profit in brazil using a recursive model in line with the crepon duguet and mairess

malmquist indices of productivity growth during the deregulation of norwegian banking 1980 89 productivity growth during the deregulation of the norwegian banking industry is studied within the framework of data envelopment analysis which explicitly allows for multiple outputs introducing malmquist indices for productivity growth total growth can be decomposed into frontier growth and change in each bank s distance to the frontier both the total growth index and its components can be consistently chained over time we find productivity regress at the average bank prior to the deregulation but rapid growth when deregulation took place deregulation also led to less dispersion of productivity levels within the industry

estimating oil price value at risk using the historical simulation approach abstract in this paper we propose using value at risk var for oil price risk quantification var provides an estimation for the maximum oil price change associated with a likelihood level and can be used for designing risk management strategies we analyse three var calculation methods the historical simulation standard approach the historical simulation with arma forecasts hsaf approach developed in this paper and the variance covariance method based on autoregressive conditional heteroskedasticity models forecasts the results obtained indicate that hsaf methodology provides a flexible var quantification which fits the continuous oil price movements well and provides an efficient risk quantification

determinants of bank market structure efficiency and political economy variables abstract this paper analyzes the influence of bank efficiency and political economy variables on bank market structure market share and market concentration using a panel data of 2 592 banks from 69 countries over the 1996 2002 period results indicate that the validity of the efficiency structure hypothesis to explain bank market structure varies across countries depending on national political economy variables in particular higher entry requirements more generous deposit insurance and higher extent of government bank ownership reduce the positive influence of bank efficiency on market share and market concentration however tighter restrictions on bank activities better quality of the contracting environment more market monitoring and more market orientation and development of the financial system increase the positive influence of bank efficiency on market share and market concentration jel classification g18 g21 g28 keywords banking structure efficiency regulations supervision institutions

an examination of cost subadditivity and multiproduct production in large u s banks this paper examines the subadditivity of costs for a sample of the largest commercial banks in the u s we introduce into the bank production literature the grid approach developed by evans and heckman 1984 we estimate two models of the bank cost function one where deposits are treated as outputs while in the other deposits are treated as inputs the models are estimated using the commonly used translog and the more flexible miniflex laurent viewed narrowly the findings imply that cost complementarities are not the raison d etre for multiproduct production in the largest commercial banks subadditive costs however are sufficient but not necessary for multiproduct production it is quite possible for multiproduct production to be optimal when output are produced independently levy and haber 1986 and teece 1980 1982 it is only required that inputs be shareable as opposed to joint copyright 1990 by ohio state university press

do lenders favor politically connected firms rent provision in an emerging financial market corruption by the politically connected is often blamed for economic ills particularly in less developed economies using a loan level data set of more than 90 000 rms that represents the universe of corporate lending in pakistan between 1996 and 2002 we investigate rents to politically connected rms in banking classifying a rm as political if its director participates in an election we examine the extent nature and economic costs of political rent provision we nd that political rms borrow 45 percent more and have 50 percent higher default rates such preferential treatment occurs exclusively in government banks private banks provide no

mapping the cost risk of agricultural residue supply for energy application in rural china this research aims to shed light on the interaction mechanism of cost risks for biomass material supply in power generation especially for biomass coal dual fuel systems firstly a game model is established to analyze interactions among factors including unit procurement cost unit transportation cost basic price and coal price for crop residue collection secondly a monte carlo simulation is implemented to compare the profit increase under material competition with that under price alliance the methodology is illustrated with a case study in a biomass power plant in shandong province china it shows that developing a price alliance will benefit both the allied enterprises and the local collection area in most circumstances thirdly a risk tolerance area approach is applied in mapping the cost risk and in explaining the risky circumstances of the case study

cost efficiency in bangladesh banking does financial reform matter abstractthis article estimates the cost efficiency of the commercial banks of bangladesh in the context of financial reform employing the single stage stochastic frontier analysis sfa model the study uses a unique balanced panel data set comprising bank level annual data from the dominant commercial banks in bangladesh for the period 1983 2012 the results show that bank cost has fallen due to financial deregulation our results from the data envelopment analysis do not vary significantly that we obtained from the sfa in addition the presence of politically linked directors on the bank board has an adverse effect on efficiency these findings suggest that further reforms aiming at removing all sorts of political influence should continue to ensure competitive environment in order to achieve cost efficiency in the financial sector of the country

political connection bank credits and growth evidence from turkey the pervasive existence of government owned banks in emerging economies is often justified by their provision of access to credit in remote and underdeveloped regions that are ignored by private banks this paper analyses whether credits provided by government owned and private banks have a significant role in regional growth and whether this role changes in politically connected areas in turkey our findings imply that private banks significantly improve the economic well being in all turkish provinces regardless of their development level or their political connection with the ruling party however credits by government owned banks are found to be positively related to the per capita growth rate only in the less developed provinces that are advocates of the ruling political party and also developed but not politically connected provinces these results suggest that government owned bank credits as implied by the political view are used for funding politically desirable projects or politically connected borrowers

malmquist type indices in the presence of negative data an application to bank branches in this paper we develop an index and an indicator of productivity change that can be used with negative data for that purpose the range directional model rdm a particular case of the directional distance function is used for computing efficiency in the presence of negative data we use rdm efficiency measures to arrive at a malmquist type index which can reflect productivity change and we use rdm inefficiency measures to arrive at a luenberger productivity indicator and relate the two the productivity index and indicator are developed relative to a fixed meta technology and so they are referred to as a meta malmquist index and meta luenberger indicator we also address the fact that vrs technologies are used for computing the productivity index and indicator a requirement under negative data which raises issues relating to the interpretability of the index we illustrate how the meta malmquist index can be used not only for comparing the performance of a unit in two time periods but also for comparing the performance of two different units at the same or different time periods the proposed approach is then applied to a sample of bank branches where negative data were involved the paper shows how the approach yields information from a variety of perspectives on performance which management can use

analysis of factors affecting a shift in a local energy system towards 100 renewable energy community abstract we explore what factors play a critical role in a shift of a local energy system towards 100 renewable energy community by examining the case using a framework that highlights the role of key state and non state actors investors local officials citizens and policy entrepreneurs and the role of governance mode horizontal self steering partnership participation inclusiveness of energy decision making co ownership of the process for the actual outcome the framework is based on recent transition literature that has focused on the dynamics of change the case study provides the evidence of the important role of participation of local community in the open decision making process from the onset their partnership in the local energy system solutions sense of ownership as well as the role of mayor as a policy entrepreneur

pesticide use environmental spillovers and efficiency a dea risk adjusted efficiency approach applied to dutch arable farming pesticides are widely used by crop producers in developed countries to combat risk associated with pests and diseases however their indiscriminate use can lead to various environmental spillovers that may alter the agricultural production environment thus contributing to production risk this study utilises a data envelopment analysis dea approach to measure performance of arable farms incorporating pesticides environmental spillovers and output variance as undesirable outputs in the efficiency analysis and taking explicitly into account the effect of pesticides and other inputs on production risk the application focuses on panel data from dutch arable farms over the period 2003 2007 a moment approach is used to compute output variance providing empirical representations of the risk increasing or decreasing nature of the used inputs finally shadow values of risk adjusted inputs are computed we find that pesticides are overused in dutch arable farming and there is a considerable evidence of the need for decreasing pesticides environmental spillovers

trends in efficiency in response to regulatory reforms the case of indian and pakistani commercial banks this paper attempts to estimate trends in the efficiency levels of indian and pakistani commercial banks between 1985 and 2003 a time period which encompasses two phases of significant change to the regulation of the financial sector in both countries our efficiency estimates show that during the initial years of the post reform period a reduction in efficiency is observed for banks in both countries however efficiency levels were found to have increased subsequently suggesting a period of initial adjustment throughout much of the 1990s followed by a subsequent correction in the latter part of the sample period

a note on banking efficiency in portugal new vs old banks following entry into the european community in 1986 portugal transformed rapidly its repressed banking system with deregulation the opening of borders the granting of new banking licenses and privatization in a more competitive banking system one would expect a priori an increase in operational efficiency this paper attempts to quantify the magnitude of efficiency gains over the years 1990 1995 moreover the paper documents the relative efficiency performance of new domestic banks not hampered by a legacy of inefficiency from the past they could operate nearer the efficiency frontier the case of portugal provides unique information on the joint effect of deregulation and the granting of new banking licenses on the change in operational efficiency of a previously repressed banking system

efficiency analysis in banking firms an international comparison abstract the intensive process of financial european integration together with the profound transformation and deregulation that has taken place in the spanish banking system justifies the evaluation of its efficiency in comparison with that of other banking systems in this context the aim of this study is to analyze the productivity efficiency and differences in technology of several banking systems using a non parametric approach together with the malmquist index we compare the efficiency productivity and differences in technology of different european and us banking systems for the year 1992

foreign bank entry deregulation and bank efficiency lessons from the australian experience abstract this study considers the impact of foreign bank entry on banking efficiency in australia during the post deregulation period 1988 2001 using data envelopment analysis malmquist indices and stochastic frontier analysis we find foreign banks more efficient than domestic banks which however did not result in superior profits major australian banks have used size as a barrier to entry to new entrants furthermore bank efficiency has increased post deregulation and the competition resulting from diversity in bank types was important to prompt efficiency improvements finally the recession of the early 1990s resulted in a distinct shift in the process of efficiency changes

the coal question that emissions trading has not answered abstract can emissions trading assist with the task of placing a limit on coal production and consumption in australia this paper outlines a critical political economy perspective on coal and a flagship market mechanism for emissions reduction the prospects for an effective emissions trading scheme in coal dominated economies are considered in light of its theoretical justifications as well as recent attempts to price carbon in australia emissions trading is a weak instrument that does not address real world failures of coal governance at their theoretical best carbon prices produce marginal changes to the cost structure of production in practice the australian case demonstrates emissions trading is an attempt to displace the emissions reduction task away from coal through compensation arrangements and offsetting in light of the urgent need to rapidly reduce global emissions direct regulation and democratisation of coal production and consumption should be flagship climate policy

industry performance and structural efficiency measures solutions to problems in firm models abstract it is shown that average unit structural efficiency measures do not measure the level of technical efficiency in a firm model of an industry alternative structural efficiency measures generalized to multiple input and multiple output technologies are presented as a solution to the problem of how to estimate the relative performance of an industry as a whole where reallocation of inputs across firms is not feasible compared to existing measures the proposed measures require additional information therefore the linear programming dea models needed to obtain this information are presented this non parametric approach to relative efficiency measurement is also used to obtain economic efficiency estimates for an industry as a whole without imposing a priori restrictions on the relative input and output weights

the technical efficiency of us banks abstract the paper uses a non parametric frontier approach to measure the technical efficiency of a sample of u s banks the results indicate that these banks could have produced the same level of output with only 70 of the inputs actually used in addition most of this inefficiency is due to pure technical inefficiency wasting inputs rather than scale inefficiency operating at non constant returns to scale finally regression analysis indicates that the technical efficiency of the banks is positively related to size negatively related to product diversity and not at all related to the extent to which branch banking is allowed

extreme value theory and value at risk application to oil market recent increases in energy prices especially oil prices have become a principal concern for consumers corporations and governments most analysts believe that oil price fluctuations have considerable consequences on economic activity oil markets have become relatively free resulting in a high degree of oil price volatility and generating radical changes to world energy and oil industries as a result oil markets are naturally vulnerable to significant negative volatility an example of such a case is the oil embargo crisis of 1973 in this newly created climate protection against market risk has become a necessity value at risk var measures risk exposure at a given probability level and is very important for risk management appealing aspects of extreme value theory evt have made convincing arguments for its use in managing energy price risks in this paper we apply both unconditional and conditional evt models to forecast value at risk these models are compared to the performances of other well known modelling techniques such as garch historical simulation and filtered historical simulation both conditional evt and filtered historical simulation procedures offer a major improvement over the parametric methods furthermore garch 1 1 t model may provide equally good results as well as the combining of the two procedures

power industry restructuring and eco efficiency changes a new slacks based model in malmquist luenberger index measurement measuring variations in efficiency and its extension eco efficiency during a restructuring period in different industries has always been a point of interest for regulators and policy makers this paper assesses the impacts of restructuring of procurement in the iranian power industry on the performance of power plants we introduce a new slacks based model for malmquist luenberger ml index measurement and apply it to the power plants to calculate the efficiency eco efficiency and technological changes over the 8 year period 2003 2010 of restructuring in the power industry the results reveal that although the restructuring had different effects on the individual power plants the overall growth in the eco efficiency of the sector was mainly due to advances in pure technology we also assess the correlation between efficiency and eco efficiency of the power plants which indicates a close relationship between these two steps thus lending support to the incorporation of environmental factors in efficiency analysis

attributing responsibility for energy justice a case study of the hinkley point nuclear complex since 2006 as part of the transition to low carbon technologies uk energy policy has moved towards incentivising new nuclear power production as a result the uk has developed a now delayed strategy to deliver around 16gw of new nuclear power by 2030 this policy context provides an opportunity to reflect not only on the material infrastructure needed to meet transition targets but also on who is responsible for the energy justice implications of these decisions using data collected from 26 semi structured interviews with ngo and policy representatives this paper presents a case study of energy justice concerns surrounding the hinkley point nuclear complex in somerset focusing particularly on the highly controversial hinkley point c developments the results emphasise the importance of considering not only instances of energy justice or injustice but of attributing responsibility for them a concept that has been largely overlooked in the energy justice literature ngos government and business allocate responsibility differently in nuclear energy decision making we find that perceptions of responsibility are highly dependent upon the level of transparency in decision making this article is part of a virtual special issue entitled exploring the energy justice nexus

the impact of liberalization on the productive efficiency of indian commercial banks abstract we examine the productive efficiency of 70 indian commercial banks during the early stages 1986 1991 of the ongoing period of liberalization we use data envelopment analysis to calculate radial technical efficiency scores we then use stochastic frontier analysis to attribute variation in the calculated efficiency scores to three sources a temporal component an ownership component and a random noise component we find publicly owned indian banks to have been the most efficient followed by foreign owned banks and privately owned indian banks we also find a temporal improvement in the performance of foreign owned banks virtually no trend in the performance of privately owned indian banks and a temporal decline in the performance of publicly owned indian banks we attempt to explain these patterns in terms of the government s evolving regulatory policies

determinants of bank cost efficiency in transition economies evidence for latin america central and eastern europe and south east asia in this study we adopt wang s 2002 heteroscedastic stochastic frontier model which allows us to investigate bank cost efficiency and to measure the marginal effects of some variables on both the level and the variability of inefficiency in recent years the financial crisis has significantly affected the banking systems of the transition countries hence the efficiency is of major importance for the stability of the banks regarding the determinants of efficiency we find evidence that banks that follow a more cautious strategy characterized by lower risk appetite and average expectations on profitability have higher cost efficiency we also find that traditional deposit taking and loan making still remain the most efficient activity of the banks additionally the results showed that a higher gross domestic product growth rate implies an increase in the inefficiency level indicating an unsustainable bank management behaviour which in periods of economic growth adopts policies that can generate

technical scale and allocative efficiencies in u s banking an empirical investigation a nonparametric frontier approach is used to calculate the overall technical pure technical allocative and scale efficiencies for a sample of 322 independent banks the sample was drawn from the federal deposit insurance corporation tapes on the reports of condition and reports of income call reports for the year 1986 the results indicated a low level of overall efficiency the main source of inefficiency was technical in nature rather than allocative separate efficiency frontiers were constructed to test the effect of branching however the distributions of efficiency measures for branching and non branching banks were not found to be different

graph efficiency and productivity measures an application to us agriculture hyperbolic measures of efficiency and productivity change with respect to a graph representation of production technology allow researchers to consider output and input dimensions simultaneously in measuring producer performance hyperbolic efficiency measures have been proposed but empirical implementation has not followed either in efficiency analysis or in productivity analysis the objectives of this paper are to define hyperbolic performance measures on a graph representation of production technology to motivate their use by stating some of their advantages over their radial counterparts and to introduce a direct formulation to calculate them making use of data envelopment analysis techniques the ideas are illustrated by calculating hyperbolic efficiency and malmquist productivity indexes for a us agricultural panel data set

banking efficiency in the nordic countries abstract evidence of the relative competitiveness of the banking industries in three nordic countries is provided by applying data envelopment analysis of productivity on the national and the pooled data sets the analysis produces a detailed account of how well banks from different countries and different sizes may be prepared to meet the more intense competition of a common european banking market

the static and dynamic environmental efficiency of renewable energy a malmquist index analysis of oecd countries abstract in recent years renewable energy and environmental efficiency have been interesting issues for both academics and industry actors when discussing sustainable development against this background the present study examines the environmental efficiency of renewable energy from the static and the dynamic perspective in 31 oecd countries a study conducted to understand the impact of renewable energy across countries as a non parametric methodology data envelopment analysis is used to measure environmental efficiency through multiple inputs and outputs labor capital and renewable energy supply are the three inputs while gdp is the desirable output and carbon emissions are the undesirable output to measure the dynamic environmental efficiency of renewable energy the malmquist productivity index is applied to estimate the average efficiency change from 2004 to 2011 the results demonstrate geographical differences in environmental efficiency across the oecd countries in oecd america have the highest average environmental efficiency and those in oecd europe have the largest standard deviation we also find that dynamic efficiency is influenced by the global financial crisis triggered in the united states further we show that oecd countries implement both catch up and frontier shift strategies to improve environmental efficiency

assessing eco efficiency through the dea analysis and decoupling index in the latin america countries abstract this study was developed according to a two step approach in the first step we provide an investigation of the changes in eco efficiency under constant and variable return to scale while on a second step the evaluation of the decoupling elasticity will be given the impacts of energy economic and environmental determinants inputs on the performance indicators of eco efficiency were calculated as the inverse of the carbon intensity ratio of the gdp over the co2 emissions both from the world development indicators database the changes in eco efficiency and the decoupling elasticity between co2 emissions and economic growth changes data was used for 16 latin america countries according to five year periods from 1994 to 2013 for all the five time span considered it is worth noting that the degree of technical efficiency for the latin america countries is lower than the degree of technological efficiency thus indicating that a portion of the overall inefficiency is due to the fact that these countries are producing below the production frontier rather than to an inefficient use of technology on average the results have confirmed that the technological scale change in energy production is the dominant factor influencing the optimal production frontier in the sample of countries under analysis complementarily according to the mixed results from the decoupling analysis we may conclude that the increase decrease of the co2 per capita emissions was due to other economic and environmental factors rather than to a negative positive effect of the gdp growth rate

the landscape of energy initiatives in sub saharan africa going for systemic change or reinforcing the status quo abstract this article examines recent interventions by major players in sub saharan africa s energy sector and asks whether they acknowledge or seek to address energy as a complex problem and energy systems as socio technical systems several scholars have begun advocating the socio technical approach to energy by noting that the mainstream conceptualization of energy challenges in strictly technological or economic terms does not capture the complexity and inertia inherent to energy systems moreover the article also seeks to examine how well have recent interventions integrated pro poor and low carbon concerns two of the major tenets of un s sustainable development goal 7 findings suggest that initiatives studied take only partial consideration of key aspects of a socio technical approach to the energy problem nonetheless the initiatives have taken on board pro poor and low carbon concerns to a certain extent two main policy implications are drawn from this study a continued focus on status quo approaches has the potential to generate investment inefficiencies and an effective low carbon transition will require a broader discussions about the types of lifestyles people in sub saharan africa aspire to

politicizing energy justice and energy system transitions fossil fuel divestment and a just transition the burgeoning energy justice scholarship highlights the importance of justice and equity concerns in the context of global decarbonization and the transition to a green economy this paper seeks to extend current conceptualizations of energy justice across entire energy lifecycles from extraction to final use to offer an analytically richer and more accurate picture of the in justice impacts of energy policy decisions we identify two key areas that require greater attention and scrutiny in order to enact energy justice within a more democratized energy system first we call for greater recognition of the politics power dynamics and political economy of socio technical energy transitions we use the example of the fossil fuel divestment movement as a way to shift energy justice policy attention upstream to focus on the under researched injustices relating to supply side climate policy analysis and decisions second the idea of a just transition and the distributional impacts on and the role of labor in low carbon transitions must be addressed more systematically this focus produces a more directly political and politicizing framing of energy in justice and a just energy transition

is there a single frontier in a single european banking market abstract this paper attempts to estimate comparable efficiency scores for european banks operating in the single market in the eu using a data set of more than 5000 large commercial banks from all major european banking markets over the period 1993 2004 the application of meta frontiers enables us to assess the existence of a single and integrated european banking market we find evidence in favor of a single european banking market characterized by cost and profit meta frontiers however compared to the meta frontier estimations pooled frontier estimations tend to underestimate efficiency levels and correlate poorly with country specific frontier efficiency ranks

explaining efficiency differences among large german and austrian banks cost efficiency scale efficiency and productivity change are estimated by data envelopment analysis and cost efficiency is regressed on explanatory variables no evidence is found for average productivity responding to deregulation over the period studied state owned banks are found to be more cost efficient likely owing to cheaper funds and cooperative banks to be about as cost efficient as private banks increasing economies of scale but decreasing economies of scope provide rationale for m as among banks with similar product portfolios interbank and capital market funding is found to be more cost efficient than deposits when the cost of retail networks is controlled

forecasting petroleum futures markets volatility the role of regimes and market conditions in this paper we employ regime volatility models to describe time dependency in petroleum markets using a sample of nymex and ice futures contracts we establish the existence of a regime process and link this process to market fundamentals this formulation results in two distinct states a highly persistent conditional volatility process characterised by long memory and low sensitivity to market shocks and a relatively short lived nonstationary process with less memory but higher sensitivity to shocks moreover to investigate the relationship between disequilibrium and volatility of oil futures across high and low volatility regimes we use augmented regime garch models to address in a realistic way the potential diverse response of volatility to forward curve shocks the performance of these models is compared to benchmarks using both statistical tests and risk management loss functions to test the robustness of the forecasting strategies we also perform a reality check employing the stationary bootstrap approach the findings of this paper have important implications for decision making concerning trading and risk management as well as energy market operations such as refining and budget planning by providing valuable information on the oil price volatility dynamics and the ability to predict risk

banking technology and the existence of a consistent output aggregate abstract this paper addresses the question of the existence of a consistent output aggregate in banking specific necessary and sufficient conditions for output aggregation are developed and tested in the context of a second order approximation to any arbitrary multi product bank cost function the analysis provides evidence that a composite aggregate measure of output fails to provide a proper representation of banking technology and therefore previous studies that used aggregate output measures may well be subject to specification errors

who governs energy the challenges facing global energy governance this article conceptualizes the energy problems facing society from a global governance perspective it argues that a notion of global energy governance taken to mean international collective action efforts undertaken to manage and distribute energy resources and provide energy services offers a meaningful and useful framework for assessing energy related challenges the article begins by exploring the concepts of governance global governance and global energy governance it then examines some of the existing institutions in place to establish and carry out rules and norms governing global energy problems and describes the range of institutional design options available to policymakers it briefly traces the role of a selection of these institutions from inter governmental organizations to summit processes to multilateral development banks to global action networks in responding to energy issues and points out their strengths and weaknesses the article concludes by analyzing how the various approaches to global governance differ in their applicability to addressing the conundrums of global energy problems

financial deregulation and productivity growth in banking sector empirical evidence from bangladesh this article examines the effects of regulatory reform on productivity growth in the bangladesh banking industry we use a unique balanced panel dataset comprising bank level annual data from the e

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

a comparative analysis of urban energy governance in four european cities abstract cities are at the forefront of efforts to combat climate change and in this paper we examine the influence of urban energy governance on these policy goals an innovative framework for quantifying the combined governance of cities and energy systems is presented before focusing on a detailed study of london paris berlin and copenhagen by applying an optimization model to assess the lowest cost technology pathways to achieve emission reduction targets the links between the governance of urban energy systems and the cost of achieving carbon targets are shown additionally a novel metric of scenario similarity is introduced in order to evaluate the difficulty of hypothesized energy system transitions the results indicate that these tools can be valuable in identifying similar cities for the sharing of best practice for performing comparative evaluations of energy transitions and for reinforcing the need to complement quantitative assessments with a more holistic appreciation of local context

productivity growth in large us commercial banks the initial post deregulation experience abstract we explore productivity growth for a group of 201 large us commercial banks over the initial post deregulation period from 1984 to 1990 using data envelopment analysis dea we measure productivity growth using malmquist productivity indexes and isolate the contributions of technical change technical efficiency change and scale change to productivity growth we find overall productivity growth at the rate of about 4 5 per year on average but productivity declined by 7 61 between 1984 and 1985 and by 0 33 between 1988 and 1989 our second stage panel regressions reveal that larger asset size and specialization of product mix associate with higher productivity growth while higher equity to assets associates with lower productivity growth

energy and ghg emission efficiency in the chilean manufacturing industry sectoral and regional analysis by dea and malmquist indexes abstract global warming produced mainly by the emission of greenhouse gases is currently a worldwide concern in the last few decades since the 1950s many of the changes observed in the world climate have been meaningful this paper presents an analysis of energy efficiency and of greenhouse gas emissions in the chilean manufacturing industry by region and sector taking into consideration time sequences data envelopment analysis dea models are used for the analysis three ways to handle undesirable outputs are compared the source of inefficiency in each decision making unit dmu is calculated using scale efficiency and the evolution over time is analyzed using the malmquist index the results indicate that the industries located in the chilean regions of coquimbo la araucania and aysen were the most efficient while the industries in the regions of tarapaca antofagasta and biobio were less efficient the most efficient industrial sectors were those involving communications equipment base metals and clothing the least efficient were those concerned with food and beverages textiles and nonmetallic minerals due to the treatment of the undesirable outputs differences were found in the efficiency indexes obtained by the three models this finding suggests using a model better adapted to the characteristics of the outputs in question and the viability of improving industrial practices

the uniqueness of the energy security justice and governance problem this article argues that among all policy fields exhibiting externalities of a global scale energy stands out on four dimensions vertical complexity horizontal complexity higher entailed costs and stronger path dependency these structural attributes are at odds with contemporary key challenges of energy security energy justice and low carbon energy transition with regard to the latter energy governance challenges occur related to unclear levels of authority and weak resilience this has implications for energy scholarship specifically relating to the political economy of energy transitions discussions about common pool resources systems analysis and other neighboring disciplines

indian bank efficiency and productivity changes with undesirable outputs a disaggregated approach the objective of this study is to examine technical efficiency and productivity growth in the indian banking sector over the period from 2004 to 2011 we apply an innovative methodological approach introduced by chen et al 2011 and barros et al 2012 who use a weighted russell directional distance model to measure technical inefficiency we further modify and extend that model to measure tfp change with npls we find that the inefficiency levels are significantly different among the three ownership structure of banks in india foreign banks have strong market position in india and they pull the production frontier in a more efficient direction spbs and domestic private banks show considerably higher inefficiency we conclude that the restructuring policy applied in the late 1990s and early 2000s by the indian government has not had a long lasting effect

policy making and energy infrastructure change a nigerian case study of energy governance in the electricity sector abstract this paper focusses on investigating the underlying mechanisms and influences of the policy decision making process and how it affects and impacts the governance of the nigerian energy industry and energy infrastructure provisions in depth semi structured interviews were used all interviewees had been involved directly or indirectly in energy infrastructure policy decisions in nigeria five key themes subsequently emerged as salient intra country induced influences that were affecting the governance and performance of the nigerian energy sector 1 competencies i e practical knowledge of energy policy making 2 expectations i e past present and forecasted future expectations from the energy industry 3 legislation i e institutionalized and unwritten rules procedures 4 future visions i e future vision of the energy industry energy market 5 recruiting experts i e recruiting new energy and public policy makers in addition three major inter country induced influences were also identified 1 the changing dynamics of international and foreign aid 2 the united nations sustainable development goals and 3 the paris agreements on climate change the paper concludes by highlighting the policy implications of these influences and the consequences for policy makers in the governance of the energy industry in ensuring a secured energy future

total factor productivity growth technological progress and technical efficiency change dimensions of productivity change in yugoslavia 1965 1978 this article total factor productivity growth technological progress and technical efficiency change dimensions of productivity change in yugoslavia 1965 78 was reprinted with permission from the december 1982 issue of the economic journal this article proposes a methodology that decomposes total factor productivity change into two distinct elements technological progress and changes in technical efficiency technological progress is defined as the change in the best practice production frontier all other productivity change is attributed to technical efficiency change the article provides a theoretical framework for decomposing total factor productivity growth as well as a specification and estimation of the deterministic frontier production function it employs a programming technique to estimate a flexible functional form of the production frontier the paper then applies this technique to empirical data from yugoslavia of the period from 1965 to 1978 it concludes that for yugoslavia improvements to technical efficiency comprise the dominant contribution to total factor productivity change this agrees with accumulating evidence that in many developing economies productivity gain due to technological mastery of imported technology is substantial

managing the energy trilemma the case of indonesia abstract this article argues that a central challenge for energy governance is how to manage a complex energy trilemma involving the sometimes competing demands of energy security climate change mitigation and particularly in developing countries energy poverty it suggests that tensions between the horns of the trilemma in large part explain indonesia s current profoundly suboptimal energy policy while these tensions are not inherently incapable of resolution such resolution would require good governance at both state and global levels the possibilities for and obstacles confronting such governance are explored and provisional solutions canvassed

mergers and technical efficiency in spanish savings banks a stochastic distance function approach abstract the aim of this paper is to test the temporal variation of technical efficiency of spanish savings banks during the period 1985 1998 furthermore we test whether merged and non merged firms have different levels and temporal patterns of technical efficiency a stochastic output distance function r w shephard theory of cost and production functions princeton university press princeton nj is employed to accommodate multiple output technology the distance function provides the advantage that it does not need information about prices so it can accommodate the multi product nature of the financial sector only using the quantities as data an important point when the assumptions about perfectly competitive markets are unlikely to be met the temporal variation of efficiency is modeled extending the battese and coelli journal of productivity analysis 3 1992 153 169 approach in two ways relaxing the monotonicity of the temporal variation pattern of the efficiency term and allowing for different patterns of efficiency change between merged and non merged firms

evaluating the cost efficiency of the italian banking system what can be learned from the joint application of parametric and non parametric techniques abstract research on bank efficiency has developed in two separate streams econometric studies and data envelopment analysis a linear programming technique these two branches of literature have developed quickly but separately in this paper these two approaches have been tested on a common panel of 270 italian banks and this has suggested the following i econometric and linear programming results do not differ dramatically when based on the same data and conceptual framework ii when differences arise they can be explained by going back to the intrinsic features of the models moreover some findings on italian banks may be of interest also to the international reader i efficiency scores show a high variance ii the banking system is split in two between northern and southern banks iii there is a direct rather than inverse relationship between productive efficiency and asset quality iv the efficiency of italian banks did not increase over the period 1988 1992

an international assessment of energy security performance energy security has in recent years grown as a salient policy and political issue to better understand energy security and sustainability concerns this study s main objective is to present an energy security index which measures national performance on energy security over time based on three years of research involving interviews surveys and an international workshop this study conceptualizes energy security as consisting of the interconnected factors of availability affordability efficiency sustainability and governance it then matches these factors with 20 metrics comprising an energy security index measuring international performance across 18 countries from 1990 to 2010 it offers three case studies of japan top performer laos middle performer and myanmar w orst performer to provide context to the index s results it then presents four conclusions first a majority of countries analyzed have regressed in terms of their energy security second despite the near total deterioration of energy security a great disparity exists between countries with some clear leaders such as japan third tradeoffs exist within different components of energy security fourth creating energy security is as much a matter of domestic policy from within as it is from foreign policy without

the malmquist total factor productivity index the definitions of the malmquist output and input quantity indexes specified by d w caves l r christensen and w e diewert 1982 are applied in this study based on these indexes a malmquist total factor productivity index is derived for general production structures the definition maintains the fundamental characteristic of a productivity index as a ratio between an output quantity change index and an input quantity change index this index provides a remedy for the shortcoming of the traditional definition of the malmquist productivity index in that the latter does not correctly measure changes in productivity in the presence of changes in returns to scale copyright 1996 by the editors of the scandinavian journal of economics

the effects of deregulation on the performance of financial institutions the case of spanish savings banks this paper examines the impact of regulatory reform on the performance of spanish savings banks the focus is whether increased competition brought on by deregulation affected performance of banks over time output technical efficiency which is defined in terms of the production possibility frontier is also examined empirical results show declining levels of output technical efficiency along with a significantly high rate of technical progress in spite of declining technical efficiency during this period evidence of an increasing trend in productivity growth is found

regional analysis across colombian departments a non parametric study of energy use abstract the analysis of energy use is important in emerging economies and especially in the manufacturing industries as energy is a key factor of sustainable development this research analyses and evaluates the features of regional energy use and efficiency across colombian departments in the manufacturing industries for the period between 2005 and 2013 by applying two malmquist data envelopment analysis models the results indicate significant difference in energy use and efficiency across colombian departments in the manufacturing industries the results of the malmquist indexes determine that various manufacturing industries across colombian departments have a high potential to increase energy efficiency several manufacturing industries across colombian departments have experienced gains in productivity a growth in efficiency an improvement in the relationship between inputs and outputs and scale production and advances in innovation through new technologies this technique allows to make comparisons and improves energy policies to increase energy efficiency and decrease co 2 emissions the application of panel data models indicate that increases in energy prices exports and productivity lead to better energy use while a higher presence of energy intensive sectors and small and medium enterprises across colombian departments reduce energy efficiency the methods selected in this research generated consistent robust and reliable estimates related to energy use and co 2 emissions for regional studies the findings of this study indicate that diverse energy policies should implement in the industrial sector across colombian departments and that they should contribute to improvements in energy use especially in small and medium companies and energy intensive sectors

technical scale and allocative efficiencies of turkish banking industry this paper investigates input and output efficiency in the turkish banking industry to understand the impact of size international variables ownership control and governance on profit cost allocative technical pure technical and scale efficiency measures employing a non parametric approach along with a parametric approach we estimate the efficiency of turkish banks over the 1988 1996 period this period allows us to account for the changes in the macro economy and regulatory treatment of the turkish banking industry over time our results suggest that the heterogeneous characteristics of banks have significant impact on their efficiency moreover cost and profit efficiencies of the turkish banks have exacerbated over time results also indicate that the dominant source of inefficiency in turkish banking is due to technical inefficiency rather than allocative inefficiency which is mainly attributed to diseconomies in scale to the extent that they chose an inefficient level of production bank management is responsible for scale inefficient operations however increasing demand for banking services in the nineties fueled by the state s increasing demand for funds to finance chronic budget deficits and high growth policies and the oligopolistic nature of the turkish banking market do not justify scale adjustments our policy suggestions are that the government implement financial reform packages that foster competition in the banking market and that the industry devise incentive schemes to improve managerial efficiency

why is the oil price not about equilibrium an economic sociology account of petroleum markets abstract this opinion paper seeks to initiate discussion of the institutional and societal causes of oil price on this basis the social embeddedness concept is proposed instead of the frequently used producer consumer juxtaposition observation shows no linearity between resource distribution imbalances and supply dynamics on the one hand and price on the other as a socially endogenous factor oil price generates practices and norms comprising benchmarks for resource valuation stock market dynamics and risk aversion practices a high oil price incentivises investments and inter fuel competition whereas a low oil price increases both political and market risks beyond the consumer producer conceptualisation hence it is argued that the notion of oil price affordability in energy security should be revised