the use of parametric and non parametric frontier methods to measure the productive efficiency in the industrial sector a comparative study abstract parametric frontier models and non parametric methods have monopolised the recent literature on productive efficiency measurement empirical applications have usually dealt with either one or the other group of techniques this paper applies a range of both types of approaches to an industrial organisation setup the joint use can improve the accuracy of both although some methodological difficulties can arise the robustness of different methods in ranking productive units allows us to make a comparative analysis of them empirical results concern productive and market demand structure returns to scale and productive inefficiency sources the techniques are illustrated using data from the us electric power industry

what have we learned from the illinois reemployment bonus experiment this article analyzes an experimental program that offered payments to unemployment insurance ui recipients who found a job quickly the experiment provided exogenous differences in individual incentives which i use to test labor supply and search theories of unemployment i examine predictions about the timing of exits from unemployment and the effect of the fixed amount bonus on different wage level groups i also argue that the experimental evidence does not show the desirability of a permanent program a permanent program would sharply increase the compensation for short ui spells likely increasing the claims rate and possibly increasing unemployment

price discovery and learning during the preopening period in the paris bourse before the opening of the paris bourse traders place orders and indicative prices are set this offers a laboratory to study empirically the t tonnement process through which markets discover equilibrium prices since preopening orders can be revised or canceled before the opening indicative prices could be noise we test this against the hypothesis that preopening prices reflect learning early in the preopening the noise hypothesis is not rejected as the opening gets closer the informational content and efficiency of prices increase and the learning hypothesis is not rejected we also propose a gmm based estimate of the speed of learning

trends in unemployment duration data a method of estimating the distribution of uninterrupted unemploymentspells from aggregate unemployment data is outlined the methodology does not i mpose constant individual hazard rates and allows for heterogeneity characteris tics of the distribution of unemployment spells are then considered including ha zard rates measures of inequality such as gini coefficients and the fraction o f total unemployment associated with s weeks of unemploy ment the relationship between these char acteristics and labor demand variables gnp and supply side variables transfer payments unemployment insurance is considered in or der to better understand the relative role of short and long run unemployment copyright 1986 by mit press

the ins and outs of unemployment in canada 1976 2008 this paper studies the flows into and out of unemployment in canada at an aggregate and a number of disaggregated levels i find that inflows into unemployment are countercyclical and outflows are procyclical at an aggregate level changes in the rate at which individuals leave unemployment account for most of the changes in unemployment rates in canada between 1976 and 2008 however flows into unemployment matter more at some disaggregated levels there are also some differences in the contributions of flows into and out of unemployment to changes in unemployment rates across the 1981 82 and 1990 92 recessions ce texte etudie les entrees et sorties du chomage au canada au niveau agrege et a un certain nombre de niveaux de desagregation on decouvre que les entrees en chomage sont contre cycliques et les sorties pro cycliques au niveau agrege les changements dans le taux de sorties du chomage expliquent le gros des changements dans les taux de chomage au canada entre 1976 et 2008 cependant les flux a l entree sont plus importants a certains niveaux de desagregation on note aussi des differences dans la contribution des flux a l entree et a la sortie du chomage aux changements dans les taux de chomage au cours des recessions de 1981 82 et de 1990 92

unemployment insurance and the rate of re employment of displaced workers the rate of transition from unemployment to re employment for a sample of displaced workers is estimated using a semiparametric specification which allows the effects of unemployment insurance benefits to vary over time three results which would be missed by more restrictive specifications demonstrate the value of this approach 1 the effects of ui benefits decline and eventually disappear as the date of expiration approaches 2 expiration of ui benefits are an inadequate explanation of the spikes commonly observed in nonparametric sample hazard rates for re employment 3 ui benefits do not significantly affect the rate at which a displaced worker becomes re employed in his or her previous industry but reduce the rate for transitions to other industries copyright 1991 by mit press

digit preference in cps unemployment data abstract in analyses of cps unemployment duration data it is necessary to smooth the observed responses prior to inference to accommodate the effects of digit preference in this note i show that popular methods of smoothing have significant effects on estimates of expected duration the time series properties of this statistic are less severely affected

job queues discrimination and affirmative action james r fain if employers have different becker type discrimination coefficients for different demographic groups then the implementation of affirmative action may have a differential impact on those groups we estimate two vector autoregressive models of the us economy including the unemployment rates of four demographic groups we find that a job queue existed before the implementation of affirmative action and that affirmative action changed the ordering of the job queue in manner that had a negative impact on nonwhite males we find evidence that affirmative action may have increased the unemployment rate of nonwhite males by increasing their duration of unemployment jel j71 j78 j64 j68 i introduction the relative status of demographic groups in the labor force has been undergoing significant change since the early 1960s throughout this period white females and racial minorities have experienced changes not only relative to white males but also relative to one another one such change is exhibited in relative unemployment rates figure 1 shows differentials in the smoothed unemployment rates using a 12 x 2 centered moving average for white females nonwhite males and nonwhite females for the years 1959 83 one can easily see that the relative unemployment burdens have varied over time focusing first on the two lines that are positive over the entire range one may see that prior to the late 1960s the status of nonwhite individuals especially nonwhite males relative to white females was improving however beginning in the late 1960s this trend reversed the unemployment rate differential between nonwhite males and white females increased from a low of 1 03 in july 1969 to a high of 11 12 in march 1983 similarly after declining during the 1960s the unemployment rate differential between nonwhite females and white females increased from a low of 3 49 in october 1969 to a high of 9 16 in august 1983 these reversals in trend indicate the status of white females relative to both nonwhite males and nonwhite females began improving in the late 1960s figure 1 also shows the status of nonwhite females improved relative to that of nonwhite males during the same time period the unemployment rate differential between nonwhite males and nonwhite females increased from a low of 3 13 in february 1968 to a high of 2 38 in february 1983 these three unemployment rate differentials all declined in the 1960s a time of tremendous social change and strong economic growth but all of these trends reversed direction in the 20 month period from february 1968 to october 1969 after the trend reversal the status of white females improved relative to both nonwhite males and nonwhite females and the status of nonwhite females improved relative to that of nonwhite males to put it another way nonwhite males lost ground relative to both nonwhite females and white females our goal is to examine what role if any the implementation of affirmative action in 1968 had in reversing these trends other possible explanations of the above noted reversal in trends certainly exist but several factors point to affirmative action as a potential cause of these changes first the timing is correct the trends reversed in close proximity to the implementation of affirmative action second whatever caused these reversals affected all minority groups did so within a short 20 month time span and its impact was sustained over a number of years a new federal policy designed to change the way firms hire minorities should have exactly this type of effect finally as we will argue below imposing affirmative action on discriminating employers will not benefit all demographic groups equally discriminating employers will continue to discriminate though the pattern of discrimination may change many of the traditional explanations of changes in relative unemployment rates are unlikely candidates to explain these significant and sustained reversals of longstanding trends

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

an experimental examination of the walrasian tatonnement mechanism this is a systematic experimental comparison of the efficiency and competitive properties of a computerized multiunit tatonnement with or without a dynamic improvement rule with or without publicity of order flow information all versions of the tatonnement are comparatively less efficient than the continuous double auction the tatonnement yields competitive prices but both sides tend to underreveal demand supply causing inefficiency only the full information no improvement rule version of the tatonnement procedure approaches the efficiency of the double auction

demographic differences in cyclical employment variation demographic differences in patterns of employment variation over the business cycle are examined in this paper three primary conclusions emerge first both participation and unemployment must be considered in any analysis of cyclical changes in the labor market second young people bear a disproportionate share of cyclical employment variation third failure to consider participation has led to undue pessimism about the effect of aggregate demand policy on high unemployment groups if participation did not surge reduction in overall unemployment to its 1969 level would reduce the unemployment of almost all demographic groups to very low levels

efficiency analysis of hydroelectric generating plants a case study for portugal abstract this paper estimates changes in total productivity breaking this down into technically efficient change and technological change by means of data envelopment analysis dea applied to the hydroelectric energy generating plants of edp the portugal electricity company the aim of this procedure is to seek out those best practices that will lead to improved performance in the energy market we rank the plants according to their change in total productivity for the period 2001 2004 concluding that some plants experienced productivity growth while others experienced a decrease in productivity the implications arising from the study are that edp should adopt an internal benchmark management procedure in order to evaluate the relative position of each hydroelectric generating plant and to adopt managerial strategies designed to catch up with the frontier of best practices as the frontier is shifting along the time constant efforts are needed in this respect along the time

walrasian tâtonnement auctions on the tokyo grain exchange the tokyo grain exchange tge s itayose mechanism provides the opportunity to analyze functioning walrasian t tonnement auctions wta in 15 677 auctions conducted over 1997 1998 for corn and redbean futures contracts price formation is unexpectedly similar to that observed in continuous double auctions provisional prices and pledges are informative in contrast to behavior observed in experiments few pledges are deceptive because the traders participate repeatedly and because the auctioneer has flexibility when changing the provisional price and ending the auction both the risk of the auction ending and the more equitable dispersion of information increase depth and the speed at which information is embodied in price

a literature study for dea applied to energy and environment abstract this study systematically summarizes previous research efforts on data envelopment analysis dea applied to energy and environment in the past four decades including concepts and methodologies on dea environmental assessment industrial developments are very important for all nations in terms of their economic prosperities a problem is that the development produces various pollutions on air water and other types of contaminations all of which are usually associated with our health problems and climate changes thus it is necessary for us to consider how to make a balance between economic success and pollution mitigation to maintain a high level of social sustainability in the world it is widely considered that dea is one of the methodologies to examine the level of sustainability this study examines a recent research trend on dea applications from 1980s to 2010s nowadays many researchers have paid serious attention on how to combat various difficulties in the areas of energy and environment as a result the number of articles on dea applications on energy and environment has dramatically increased particularly after 2000s however it is true that dea has strengths and drawbacks in the applications therefore it is very important for us to carefully use dea for guiding large policy issues and business strategies such as the global warming and climate change an underlying premise of this study is that technology innovation in engineering and natural science may solve various problems by linking it with political and managerial efforts the use of dea provides a methodological linkage among them so enhancing the practicality in mitigating problems due to climate change and environmental pollutions this literature study along with a summary on conceptual and methodological developments provides us with guidelines for our future research works on dea on energy and environment issues

the probability of finding a job recent research has reaffirmed that the prob ability of an unemployed worker finding a job varies substantially over the business cycle robert e hall 2005 101 concludes from his examination of a variety of data sources that unemployment is high in a recession because jobs are hard to find not because more job seek ers have been dumped into the labor market by elevated separation rates shimer 2007 shows that movements in the job finding probability account for three quarters of the fluctuations in the unemployment rate in the united states during the postwar period while movements in the exit rate from employment to unemployment account for the other quarter michael w elsby ryan michaels and gary solon 2007 argue that movements in the job finding probability accounted for about 65 percent of unemploy ment fluctuations prior to the last two reces sions and more in 1990 1991 and 2001 shigeru fujita and gary ramey 2007 claim a more substantial role for the exit rate to unemploy ment but still find that the job finding probabil ity accounts for at least half of the fluctuations in unemployment while it is theoretically convenient to discuss a single job finding probability for all workers economists have long recognized that the job finding probability falls with unemployment duration hyman b kaitz 1970 this paper reexamines duration dependence and the cycli cally of duration dependence in the job finding probability both empirically and theoretically to start i develop a simple model with a single parameter that determines both how the job finding probability varies with unemployment duration and how it varies with aggregate eco nomic conditions the model s main departure from most existing research is to think of unemployed workers as waiting for labor mar ket conditions to improve rather than searching for job opportunities boyan jovanovic 1987 fernando alvarez and shimer 2007 they continuously compare their lifetime utility in the best available job with their lifetime utility if they remain unemployed individual works if this difference 8 t is positive at time t and not if it is negative if s is persistent this leads to duration dependence in the hazard rate of exiting unemployment since a newly unem ployed worker is more likely to be near the threshold for taking a job than someone who is long term unemployed the extent of dura tion dependence is governed by the stochastic process for s which also determines how the average job finding probability varies with eco nomic conditions

unemployment duration in the recession the local labour market area scale green a e 1985 unemployment duration in the recession the local labour market area scale reg studies 19 111 129 this paper examines spatial variations in the duration of uncompleted unemployment spells using median lower and upper quartile duration measures within a local labour market area llma framework regional hierarchical and functional differentials in unemployment duration during the recession are investigated using a nineteen fold llma classification it is discovered that pre existing spatial differentials in unemployment duration experience were largely maintained with longer durations recorded in the north than in the south around provincial conurbations than in the london metropolitan region at higher than at lower levels of the urban hierarchy and in llmas with a manufacturing employment base than in those with a service or commercially oriented employment structure

how does the unemployment insurance system shape the time profile of jobless duration this paper examines the effects of unemployment insurance on escape rates from unemployment using data from the 1998 displaced worker survey transitions from unemployment to employment are modeled using a flexible representation of the baseline hazard function and allowing for discrete changes through time in the effects of unemployment insurance benefits as well as those of the other covariates the impact of unemployment insurance is also modeled using a time varying benefits measure namely time to exhaustion of benefits potential biases stemming from reverse causation and unobserved individual heterogeneity are accommodated both approaches render transparent the major disincentive effects of access to benefits on re employment rates while also providing evidence of time varying effects of other regressors

does unemployment compensation affect unemployment duration abstract we use a flexible hazard rate model with unrestricted spell duration and calendar timeeffects to analyse a dataset including all norwegian unemployment spells during the1990 s the dataset provides a unique access to conditionally independent variation inunemployment compensation we find that a marginal increase in compensation re duces the escape rate from unemployment significantly irrespective of business cycleconditions and spell duration the escape rate rises sharply in the months just prior tobenefit exhaustion while men are more responsive than women with respect to mar ginal changes in compensation women are most responsive with respect to benefitexhaustion keywords unemployment spells business cycles unemployment compensation non parametric duration analysis jel classification c41 j64 the ragnar frisch centre for economic research oslo we wish to thank the re search council of norway for financial support and christian brinck harald goldstein costas meghir espen moen steinar strom rolf aaberge and three anonomyous referees for helpful comments cor respondence to knut roed the ragnar frisch centre for economic research gaustadalleen 21 0349oslo norway e mail knut roed frisch uio no

factors affecting the efficiency of wind power in the european union countries abstract the study uses the two stage bias corrected dea approach of simar and wilson 2007 to assess the efficiency of the eu countries in terms of their wind power investment in 2015 the set of input variables includes installed wind power capacity and average wind power density while output variables include wind generated electricity and three additional aspects environmental economic and energy security next the study examines the effect of renewable energy policy regarding wind energy the energy mix and the offshore wind power utilisation on the wind power efficiency of the analysed countries the results obtained reveal that the united kingdom sweden denmark and ireland are the most efficient countries in terms of wind power investment the inclusion of additional aspects demonstrates the greatest improvement of efficiency in belgium cyprus the netherlands estonia and germany the results seem to indicate that economic instruments used within renewable energy policy have a positive effect on wind power efficiency while policy support and regulatory instruments might negatively impact moreover the results show that the energy mix explains the variation of the efficiency of the eu countries when their economic and environmental aspects are considered the analysis of the geographic location indicates that countries with a high share of offshore wind capacity are the most efficient

screening peers softly inferring the quality of small borrowers this paper examines the performance of new online lending markets that rely on nonexpert individuals to screen their peers creditworthiness we find that these peer lenders predict an individual s likelihood of defaulting on a loan with 45 greater accuracy than the borrower s exact credit score unobserved by the lenders who only see a credit category moreover peer lenders achieve 87 of the predictive power of an econometrician who observes all standard financial information about borrowers screening through soft or nonstandard information is relatively more important when evaluating lower quality borrowers our results highlight how aggregating over the views of peers and leveraging nonstandard information can enhance lending efficiency this paper was accepted by amit seru finance

seller beware supply and demand reduction and price manipulation in multiple unit uniform price auctions we experimentally compare under revelation of supply and demand across alternative variations of ascending and descending two sided price clock auctions we find that buyers reduce demand more when the price is ascending but sellers behavior is consistent across clock directions as a result the clock price rule has empirical effects on efficiency even though it is theoretically neutral

measurement of productive efficiency with frontier methods a case study for wind farms abstract in this paper we measure the productive efficiency of a group of wind farms during the period 2001 2004 using the frontier methods data envelopment analysis dea and stochastic frontier analysis sfa taking an extensive definition of the productive process of wind electricity as our starting point we obtain results which allow us to identify on the one hand an essentially ex ante efficiency measure and on the other hand aspects of relevance for wind farm development companies developers technology suppliers and operators in terms of their economic impact these results may also be of interest for regulators and other stakeholders in the sector furthermore we discuss the implications of the simultaneous use of dea and sfa methodologies

heterogeneity and unemployment dynamics many previous articles have studied the contribution of inflows and outflows to the cyclical variation in unemployment but ignored the critical role of unobserved heterogeneity across workers thi

non parametric efficiency progress and regress measures for panel data methodological aspects this purely methodological paper deals with the role of time in non parametric efficiency analysis using both fdh and dea technologies it first shows how each observation in a panel can be characterized in efficiency terms vis a vis three different kinds of frontiers i contemporaneous ii sequential and iii intertemporal these are then compared with window analysis next frontier shifts outward and inward interpreted as progress or regress are considered for the two kinds of technologies and computational methods are described in detail for evaluating such shifts in either case these are also contrasted with what is measured by the malmquist productivity index finally an alternative way of identifying progress and regress independent of the frontier notion and referring instead to some benchmark notion is extended here to panel data

keeping time an analysis of errors in the measurement of unemployment duration this study uses longitudinal microdata from the current population survey to examine the consistency with which unemployment duration is reported an estimate of measurement error is proposed and analyzed a significant negative relationship is found between the initial month s unemployment duration and the reported change between surveys on average persons who begin spells of unemployment in the second month report durations greater than the actual time elapsed overall the average duration of unemployment in this sample may be overstated by at least two weeks a brief discussion of some implications for empirical labor market research concludes the article

the impact of sectoral shifts and the aggregate labour market on unemployment duration this study investigates the effects of sectoral shifts among industries on unemployment duration these effects are decomposed into two subeffects the overall effect and the specific industrial effect the former is equal for all of the unemployed in all industries while the latter depends on the tightness of the demand for labour of the industry in question in addition the impact of the aggregate labour market on unemployment duration is also explored the empirical results show that most of the overall and all of the specific effects are significant indicating that the sectoral shifts among industries as well as the aggregate labour market do in fact impact unemployment duration and that the effects on unemployment duration vary in terms of their tightness in the different industrial labour markets

a generalized measure of technical efficiency with the growing interest in the theory of the frontier production function the central analysis is the measurement of technical efficiency however the methodology has not been tested vigorously as has that of the conventional production function with few exceptions studies to date have used cross section data to measure mean technical efficiency of sample firms through the frontier production function this study uses panel data to measure not only the mean technical efficiency but also the individual firm specific technical efficiencies of sample indian farms relative to the frontier production function further it identifies the factors causing variations in individual technical efficiencies

duration dependence and labor market conditions evidence from a field experiment this article studies the role of employer behavior in generating negative duration dependence the adverse effect of a longer unemployment spell by sending fictitious resumes to real job postings in 100 u s cities our results indicate that the likelihood of receiving a callback for an interview significantly decreases with the length of a worker s unemployment spell with the majority of this decline occurring during the first eight months we explore how this effect varies with local labor market conditions and find that duration de pendence is stronger when the local labor market is tighter this result is consistent with the prediction of a broad class of screening models in which employers use the unemployment spell length as a signal of unobserved productivity and recognize that this signal is less informative in weak labor markets jel code j64

evaluating capital and operating cost efficiency of offshore wind farms a dea approach an actual growth rate greater than 30 indicates that offshore wind is a reasonable alternative to other energy sources the industry today is faced with the challenge of becoming competitive and thus significantly reduce the cost of electricity from offshore wind this situation implies that the evaluation of costs incurred during development installation and operation is one of the most pressing issues in this industry at the moment unfortunately actual cost analyses suffer from less resilient input data and the application of simple methodologies therefore the objective of this study was to elevate the discussion providing stakeholders with a sophisticated methodology and representative benchmark figures the use of data envelopment analysis dea allowed for plants to be modelled as entities and costs to be related to the main specifics such as distance to shore and water depth ensuring the necessary comparability moreover a particularly reliable database was established using cost data from annual reports offshore wind capacity of 3 6 gw was benchmarked regarding capital and operating cost efficiency best practice cost frontiers were determined and the effects of learning by doing and economies of scale were investigated ensuring that this article is of significant interest for the offshore wind industry

a comprehensive review of data envelopment analysis dea approach in energy efficiency the main aim of this review article is to review of dea models in regarding to energy efficiency this paper reviewed and summarized the different models of dea that have been applied around the world to development of energy efficiency problems consequently a review of 144 published scholarly papers appearing in 45 high ranking journals between 2006 and 2015 have been obtained to achieve a comprehensive review of dea application in energy efficiency accordingly the selected articles have been categorized based on year of publication author s nationalities scope of study time duration application area study purpose results and outcomes results of this review paper indicated that dea showed great promise to be a good evaluative tool for future analysis on energy efficiency issues where the production function between the inputs and outputs was virtually absent or extremely difficult to acquire

strategic trading in a two sided foreign exchange auction abstract the market microstructure chosen for foreign exchange markets can influence trading volumes and equilibrium exchange rates with emerging markets and developing countries increasingly utilizing two sided auctions we show that the choice of the discrete t tonnement auction creates incentives for strategic behavior among market participants theoretical predictions on strategic under revelation of demand or supply positions are supported empirically using detailed data from a rare example of a t tonnement market the moscow interbank currency exchange our results suggest that market microstructures should be introduced alongside more traditional asset market fundamentals in studies of foreign exchange market activity especially in developing countries

differences in unemployment duration a regional or a personal problem 1988 differences in unemployment duration a regional or a personal problem applied economics vol 20 no 9 pp 1233 1251

price dynamics in general equilibrium experiments general equilibrium ge theory faces several related challenges classical theories of out of equilibrium adjustment are intuitive but implausibly centralized further standard restrictions on individual preferences place little structure on aggregate excess demand functions amongst other issues this fact implies that economies can be unstable under classical dynamics and thus instability appears to be an unavoidable feature of ge theory this paper recounts laboratory studies of ge environments which reveal that classical theories of dynamics do in fact organize market activity surprisingly well these experiments suggest that the walrasian auctioneer for example appears to be a constructive abstraction and that instability should be accommodated within theory rather than circumscribed laboratory applications of ge theory focused on issues beyond stability and dynamics are also briefly surveyed

what is the best practice for benchmark regulation of electricity distribution comparison of dea sfa and stoned methods electricity distribution is a natural local monopoly in many countries the regulators of this sector apply frontier methods such as data envelopment analysis dea or stochastic frontier analysis sfa to estimate the efficient cost of operation in finland a new stoned method was adopted in 2012 this paper compares dea sfa and stoned in the context of regulating electricity distribution using data from finland we compare the impacts of methodological choices on cost efficiency estimates and acceptable cost while the efficiency estimates are highly correlated the cost targets reveal major differences in addition we examine performance of the methods by monte carlo simulations we calibrate the data generation process dgp to closely match the empirical data and the model specification of the regulator we find that the stoned estimator yields a root mean squared error rmse of 4 with the sample size 100 precision improves as the sample size increases the dea estimator yields an rmse of approximately 10 but performance deteriorates as the sample size increases the sfa estimator has an rmse of 144 the poor performance of sfa is due to the wrong functional form and multicollinearity

re employment probabilities of unemployment benefit recipients this article studies transitions out of unemployment for benefit recipients in spain we analyse the duration of unemployment distinguishing between spells that end in recall workers returning to the previous employer and spells that end in exit to a new job this distinction allows us to find that the recall hazard rate increases around the time of exhaustion of benefits however this happens only for workers receiving unemployment insurance ui because we are unable to replicate this result for workers receiving unemployment assistance ua we believe the finding lends support to the hypothesis that in spain firms and workers make a strategic use of ui

business cycles and compositional variation in u s unemployment in this article we study u s unemployment dynamics using grouped unemployment data from the current population survey over the period 1968 1992 we estimate a model that traces variation in these unemployment data both over time and between demographic groups back to the underlying variation in the inflow and the outflow in turn we model the outflow as a transition process in which we allow the exit probabilities to depend on calendar time duration and demographic group we use the estimation results to provide a decomposition of aggregate u s unemployment dynamics in various incidence and duration components

classification error models and labor market dynamics measurement error is often a severe problem in longitudinal data such as labor market flows two correction methods have been used for labor market flows but the methods tend to adjust the data in opposite directions one method shows a rigid labor market with long unemployment spells whereas the other shows the opposite because the methods appear theoretically similar one might interpret the differing results as an indictment of both procedures this article documents and explains the differences between the two methods more important it argues that the differences result from the reliance of one method on assumptions that are theoretically implausible and rejected by the data

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

assessing the performance of dutch local energy companies according to binding european union agreements the netherlands has to cover at least 14 of its total energy use with renewable energy sources by 2020 however the share of renewable energy in the netherlands is small and hardly increasing in 2010 renewable energy in the netherlands accounted for only 3 8 of the national energy use and has decreased with 0 4 compared to 2009 a cause of the stagnating renewable energy generation in the netherlands is the absence of a nation wide clear and consistent long term policy on the introduction of renewable energy in order to overcome the current standstill in renewable energy adoption several dutch municipalities take the initiative and establish local energy companies lecs however to date it is unclear which lec type performs best this research aims to compare the performance of existing lecs on three aspects technology finance and organization furthermore the performance of existing lecs is compared with theoretical reference lecs in order to estimate efficiencies and opportunities for improvements finally the influence of the recent changes in the dutch subsidy scheme on lec performance is examined in order to achieve these aims the benchmark method data envelopment analysis is employed

the anatomy of unemployment dynamics abstract this paper examines the relation between individual unemployment durations and incidence inflow size on the one hand and the time varying macroeconomic conditions in the economy on the other we develop a model for the analysis of aggregate unemployment incidence and duration data and estimate this model on quarterly french data over the period 1982 1994 stratified by sex we find upward trends in both incidence and durations the former is relatively important for females the latter for males male incidence and durations are countercyclical with only a minor role for cohort effects on durations in contrast female cohorts entering at the top of the cycle have relatively short unemployment spells and the female incidence is if anything procyclical there is strong seasonal variation in particular in the incidence finally we find relatively small non monotonic individual duration dependence in the first six quarters of unemployment unobserved heterogeneity explains the observed negative duration dependence at these durations we provide some evidence that negative individual duration dependence and not heterogeneity is important at higher durations

do traders strategically time their pledges during real world walrasian auctions abstract experimental research suggests the walrasian t tonnement auction encourages traders to under reveal preferences even encouraging initial pledges contrary to true desires because pledges are not binding we analyze the timing and characteristics of individual pledges and trades during 9604 auctions for redbeans conducted by the tokyo grain exchange we find no evidence of contrarian pledging and little evidence of under revelation as many traders over reveal as under reveal most traders pledge seriously from the beginning despite the considerable heterogeneity in pledging behavior across individual traders these differences appear to have no relationship with traders profits nor do they appear to affect the achievement of equilibrium

duration dependence in the exit rate out of unemployment in belgium is it true or spurious on the basis of aggregate data for the early 1990s we analyse the determinants of unemployment duration for laid off male workers in wallonia belgium our results indicate that if ranking in recruitment occurs the standard mixed proportional hazard specification can be too restrictive leading to an overstatement of the extent of true negative duration dependence we conclude that negative duration dependence is largely spurious we also decompose the time variation of the hazard in unobserved compositional and direct cyclical and seasonal effects we find counter cyclical variation in the quality of young workers but none for the prime aged copyright c 2004 john wiley sons ltd

a new look at the ui effect on transitions from unemployment into wage employment in spain the limited duration of the ui benefits entitlement this article is a new look at the study of the unemployment insurance effect on the transition probability from unemployment into wage employment in spain it is found that individuals increase their search effort and reduce their reservation wage as the unemployment insurance benefit entitlement exhaustion approaches and their exit rate equals that of the unemployed who never got benefits from the exhaustion moment financial constraints are not important in spain business cycle affects more to long term unemployed and finally it is found that the probability of being offered a vacancy decreases with time spent in unemployment having allowed for unobservable heterogeneity

how the ins and outs shape differently the u s unemployment over time and across frequencies abstract although the u s case has been studied extensively the importance of job finding and separation rates to unemployment variability remains unsettled the aim of this paper is to contribute to this debate by adopting a novel lens wavelet analysis we resort to wavelet analysis to unveil time and frequency varying features regarding the contribution of the job finding and job separation rates for the u s unemployment rate dynamics drawing on this approach we are able to reconcile some apparently contradictory findings reported in previous literature we find that the job finding rate is more influential for the overall unemployment behaviour but the job separation rate also plays a critical role especially during recessions in particular the job separation rate accounts for on average 53 per cent of the unemployment variability at short run fluctuations during recessions in sharp contrast with an overall contribution of 21 per cent over time and across frequencies

economic efficiency and frontier techniques abstract most of the literature related to the measurement of economic efficiency has based its analysis either on parametric or on non parametric frontier methods the choice of estimation method has been an issue of debate with some researchers preferring the parametric and others the non parametric approach the aim of this paper is to provide a critical and detailed review of both core frontier methods in our opinion no approach is strictly preferable to any other moreover a careful consideration of their main advantages and disadvantages of the data set utilized and of the intrinsic characteristics of the framework under analysis will help us in the correct implementation of these techniques recent developments in frontier techniques and economic efficiency measurement such as bayesian techniques bootstrapping duality theory and the analysis of sampling asymptotic properties are also considered in this paper

the efficiency of conventional fuel power plants in south korea a comparison of parametric and non parametric approaches abstract the efficiencies of the 64 conventional fuel power plants operating in south korea were determined by data envelopment analysis dea approaches as well as by a stochastic frontier method the banker charnes and cooper bcc dea efficiencies were introduced into an econometric estimate of a standard production function model leading to a corrected factors version of the model with significant improvement of the statistical explanation of our data a statistical analysis of the dea efficiencies was carried out and these were compared to efficiencies revealed by a stochastic frontier method