structural interpretation of vector autoregressions with incomplete identification revisiting the role of oil supply and demand shocks traditional approaches to structural vector autoregressions vars can be viewed as special cases of bayesian inference arising from very strong prior beliefs these methods can be generalized with a less restrictive formulation that incorporates uncertainty about the identifying assumptions themselves we use this approach to revisit the importance of shocks to oil supply and demand supply disruptions turn out to be a bigger factor in historical oil price movements and inventory accumulation a smaller factor than implied by earlier estimates supply shocks lead to a reduction in global economic activity after a significant lag whereas shocks to oil demand do not

edgeworth price cycles and intertemporal price discrimination in a retail gasoline market exhibiting edgeworth price cycles prices change asymmetrically with many small decreases interrupted by occasional large increases the result is a de facto menu of prices from which consumers can choose based on exactly when they buy this article introduces four classes of purchase timing strategies designed to systematically shift consumer purchases towards the cycle troughs it shows in the study market of toronto canada the monetary gains to consumers from optimized timing strategies are as high as 3 9 markups earned from these consumers fall up to 82 in spite of the gains from timing strategies surprisingly few consumers use them evidence is presented that a main reason is that consumers are not well informed about the cycles policy implications are discussed

coordination of internal supply chains in vertically integrated high tech manufacturing organizations htmos abstract this paper uses economic mechanisms to coordinate supply chains within high tech manufacturing organizations htmos it models the one shot initial production and allocation decisions involved in the production and marketing of new technologies these decisions are driven by the economic objectives of the firm and of the employees with private information the experts it analyzes and compares the efficiency of three coordination policies centralized command and control centralized revelation and decentralized revelation it shows that decentralized policies introduce an additional cost and it proposes rules of thumb for coordinating supply chains within firms that use many experts

elasticities of demand for gasoline in canada and the united states abstract fluctuations in the world price of oil the concern with greenhouse gas emissions and the efforts to revive the 1997 kyoto protocol have resulted in renewed interest in the estimation of elasticities of demand for gasoline in this paper a complete system of demand equations is estimated including an equation for the demand for gasoline canadian family expenditure famex and united states consumer expenditure cex survey data are used household level data permits estimation of elasticities for various household groups also differences in demand responsiveness to own price and income changes are estimated for different regions in canada and the united states demand is found to be own price and income inelastic on the whole as reported in earlier studies there is also variation in these elasticities across regions of canada and the united states however larger differences are observed with respect to household size and housing tenure than to region of residence

gasoline taxes or efficiency standards a heterogeneous household demand analysis abstract using detailed consumer expenditure survey data and a flexible semiparametric dynamic demand model this paper estimates the price elasticity and fuel efficiency elasticity of gasoline demand at the household level the goal is to assess the effectiveness of gasoline taxes and vehicle fuel efficiency standards on fuel consumption the results reveal substantial interaction between vehicle fuel efficiency and the price elasticity of gasoline demand the improvement of vehicle fuel efficiency leads to lower price elasticity and weakens consumers sensitivity to gasoline price changes the offsetting effect also differs across households due to demographic heterogeneity these findings imply that when gasoline taxes are in place tightening efficiency standards will partially offset the strength of taxes on reducing fuel consumption

incentives for helping on the job theory and evidence recent advances in incentive theory stress the multidimensional nature of agent effort and specifically cases where workers affect one anothers performance through helping efforts this article models helping efforts as determined by the compensation package and task allocation the model is tested with australian evidence on reported helping efforts within work groups the evidence consistently supports the hypothesis that helping efforts are reduced while individual efforts are increased when promotion incentives are strong piece rates and profit sharing appear to have little effect on helping efforts while task variety and helping efforts are positively correlated

self enforcing contracts shirking and life cycle incentives he labor market is a rich and complicated place when a worker takes a job he expects to earn a wage but will also care about rates of wage growth fringe benefits levels of risk retirement practices pensions promotion and layoff rules seniority rights and grievance procedures in return the worker must give up some time but he is also asked to upgrade his skills train other workers provide effort and ideas and defer to authority in questions of how his time is spent great changes are occurring in the way labor market institutions such as these are modelled central to the new approach is the concept of a self enforcing implicit contract this is the latest in a series of variations on the ideas of azariadis 1975 baily 1974 and gordon 1974 and is one of the more exciting new developments in the theory of labor markets this essay will outline this approach and evaluate some of its accomplishments the ideas will be presented in the context of an incentive model that is of some independent interest the model was introduced by becker and stigler 1974 and was extended by lazear 1979 to account for wage growth and mandatory retirement in these papers the workers retire at a fixed age lending the name life cycle incentives to the approach more recently shapiro and stiglitz 1984 have used a version without a fixed retirement date to account for unemployment this version is often called the shirking model these models have generated some controversy but much of it can be resolved when the models are presented in the framework of self enforcing contracts in fact this simple incentive model can do even more it can provide a rationale for competitive hierarchies where firms place their workers in competition with

toward an economic model of the japanese firm i owe a great deal to professor moses abramovitz who suggested that i write this article i appreciate his constant encouragement and guidance which aided me throughout its preparation i am also indebted to three anonymous referees of the journal and to professors ryutaro komiya and michael riordan for their critical comments and helpful suggestions needless to say i am solely responsible for the views expressed in this paper

spatial differentiation and vertical mergers in retail markets for gasoline this paper studies an empirical model of spatial competition applied to gasoline markets the main feature is to specify commuting paths as the locations of consumers in a hotelling style model as a result spatial differentiation depends in an intuitive way on the structure of the road network and the direction of traffic flows the model is estimated using panel data on the quebec city gasoline market and used to evaluate the consequences of a recent vertical merger difference in difference and counterfactual simulation methods are compared and the results to a large extent validate the assumptions of the demand model jel g34 l13 l42 l81 q41 r41

gasoline demand revisited an international meta analysis of elasticities meta analysis is used to determine if there are factors that systematically affect price and income elasticity estimates in studies of gasoline demand four econometric models are estimated using long run and short run price and income elasticity estimates from previous studies as the dependent variables explanatory variables include functional form lag structure time span national setting estimation technique and other features of the model structure elasticity estimates are found to be sensitive to the inclusion or exclusion of some measure of vehicle ownership static models appear to overestimate short run elasticities underestimate long run price elasticities but pick up the full long run income responsiveness there is variation in the elasticity of demand across countries especially in the short run and gasoline demand appears to be getting more price elastic and less income elastic over time

short run fuel price responses at the pump and on the road abstract we provide evidence that motorists respond to short run fluctuations in fuel prices at the gas pump and not on the road employing variants of censored panel regression to control for censoring of the dependent variable we find that the fuel price has a negative impact on the quantity of fuel purchased but no consistently significant impact on the subsequent distance driven until the next refill over the short run drivers thus appear to cope with high fuel prices by adjusting fuel purchases with each visit to the filling station but without altering their daily mileage

an estimation of u s gasoline demand a smooth time varying cointegration approach abstract in this paper the u s gasoline demand from 1976 to 2008 is estimated using a time varying cointegrating regression we find that price elasticity increased rapidly during the late 1970s and then decreased until 1987 after a relatively small scaled increase decrease cycle from 1987 to 2000 the price elasticity rose again after 2000 the time varying change of the elasticities may be explained by the proportion of gasoline consumption to income and fluctuation of the degree of necessity the result of the error correction model shows that a deviation from a long run equilibrium is corrected quickly and the welfare analysis illustrates there may be a gain by shifting the tax scheme from income tax to gasoline tax

heterogeneity in the response to gasoline prices evidence from pennsylvania and implications for the rebound effect abstract the consumer response to changing gasoline prices has long interested economists and policymakers for it has important implications for the effects of gasoline taxation and vehicle energy efficiency policies this study examines both the elasticity of driving with respect to changing gasoline prices and heterogeneity in this elasticity by geography the fuel economy of the vehicle and the age of the vehicle we use detailed annual vehicle level emissions inspection test data from pennsylvania that include odometer readings inspection zip codes and extensive vehicle characteristics we estimate a short run gasoline price elasticity of driving demand of 0 10 and find substantial heterogeneity in this responsiveness the elasticity is largely driven by low fuel economy vehicles as well as vehicles between 3 and 7 years old our findings help reconcile some of the recent literature and provide guidance on the magnitude of the direct rebound effect from light duty vehicle energy efficiency policies

adverse selection and pay compression a fundamental result of the principal agent literature is that pay will be linked to performance when it is difficult for the principal to monitor the agent s actions however performance pay can lead to adverse incentives in these models high powered incentives encourage workers to neglect some aspects of their job or to sabotage their coworkers efforts this paper offers another explanation for the weak link between pay and performance worker heterogeneity when workers are heterogeneous and labor contracts are contests the nash equilibrium often pools workers i show that this implies that the link between pay and performance is weaker than would be the case if firms could observe workers types before contracting and offer each type their respective optimal contests a fundamental result of the principal agent literature is that pay will be linked to performance when it is difficult for the principal to monitor the agent s actions but in the real world we often find this link to be weak several authors lazear 1989 holmstrom and milgrom 1991 garvey and swan 1992 have shown that weaker incentives may be optimal when performance pay leads to undesired behavior on the part of workers in lazear s tournament model firms weaken the link between pay and performance when workers can sabotage their coworkers efforts holmstrom and milgrom show that straight salaries are optimal when the worker s job includes some activities that cannot be easily monitored and garvey and swan show that a hybrid compensation scheme that is part tournament and part managerial discretion is optimal when workers can sabotage coworkers efforts and managers face adverse incentives the common thread in these papers is that principals weaken the link between pay and performance to mitigate adverse incentives this is what garvey and swan call pay compression in this paper i show that adverse incentives while sufficient are not necessary for pay compression to occur i consider a labor market where workers are heterogeneous with respect to ability measured as cost of effort with more able workers having a lower cost of effort jobs have a single

the effect of oil supply shocks on us economic activity what have we learned estimated responses of real oil prices and us gross domestic product gdp to oil supply disruptions vary widely we show that most variation is attributable to differences in identification assumptions and in the model specification models that allow for a large short run price elasticity of oil supply imply a larger response of oil prices and a larger longer lived contraction in us real gdp we find that if we condition on a range of supply elasticity values supported by microeconomic estimates the differences in the oil price responses diminishes we also examine the role of lag length of using pre 1973 data alternative measures of real economic activity and using the median response function instead of the modal structural model

does britain or the united states have the right gasoline tax this paper develops an analytical framework to assess the second best optimal level of gasoline taxation taking into account unpriced pollution congestion and accident externalities as well as interactions with the broader fiscal system we provide calculations of the optimal taxes for the us and the uk under a variety of parameter scenarios under our central parameter values the second best optimal gasoline tax is 1 01 gal for the us and 1 34 gal for the uk current tax rates are much lower than this in the us and higher in the uk the calculations are moderately sensitive to alternative parameter assumptions the congestion externality is the largest component in both nations revenue raising needs also play a significant role as do accident externalities and local air pollution potential welfare gains from reducing the current uk tax rate are estimated at nearly one fourth the production cost of all gasoline used in the uk even larger gains could be achieved by switching to a tax on vehicle miles with equal revenue yield for the us the welfare gains from optimizing the gasoline tax are smaller but those from switching to an optimal tax on vehicle miles are very large

rebound effect of efficiency improvement in passenger cars on gasoline consumption in canada abstract the fossil fuel driven transport sector has been one of the major contributors to co2 emission across the world keeping it on the energy policy agenda for the past three decades canada ranks second in gasoline consumption among oecd countries and canadian gasoline expenditure share has been increasing since the 1990s fuel efficiency policies aim to decrease gasoline consumption however the effect can be mitigated by changes in consumer behavior such as traveling more distances a rebound effect thus the effectiveness of fuel efficiency policy is dependent on the magnitude of the rebound effect in this paper we estimate the rebound effect for personal transportation in canada using data from the household spending survey for the period 1997 2009 the model includes a system of expenditure share equations for gasoline other energy goods and non energy goods specified by aids and quaids models and estimated by the nonlinear sur method our estimation results show a rather high average rebound effect of 82 88 but with significant heterogeneity across income groups provinces and gasoline prices specifically the rebound effect ranges from 63 to 96 across income groups and provinces and increases with gasoline prices

petrol prices and subjective wellbeing abstract we examine the effect of petrol prices on subjective wellbeing swb using household panel data to do so we use 17 waves of the household income and labour dynamics in australia hilda survey based on our preferred instrumental variable estimates we find that a standard deviation increase in petrol prices leads to a decline of 0 0157 0 0245 standard deviations in swb the finding that increases in petrol prices significantly lower swb is robust to alternative measures of wellbeing and alternative ways of addressing endogeneity as well as employing different sources of fuel price data measured at a range of frequencies we also examine the channels through which petrol prices influence swb and find that maintaining social networks is an important way through which petrol prices influence swb

pay equality and industrial politics personnel managers often argue that equitable pay treatment manifested as wage compression is useful because it reduces disharmony among workers but it is far from obvious that a compressed salary structure is morale improving since better workers may feel disenchanted by this scheme however when workers rewards are based on relative comparisons salary compression reduces uncooperative behavior that is detrimental to the firm relative comparisons imply that some reference group must be selected the major result is that within the relevant groups some wage compression is efficient

nonparametric estimation of a nonseparable demand function under the slutsky inequality restriction we present a method for consistent nonparametric estimation of a demand function with nonseparable unobserved taste heterogeneity subject to the shape restriction implied by the slutsky inequality we use the method to estimate gasoline demand in the united states the results reveal differences in behavior between heavy and moderate gasoline users they also reveal variation in the responsiveness of demand to plausible changes in prices across the income distribution we extend our estimation method to permit endogeneity of prices the empirical results illustrate the improvements in finite sample performance of a nonparametric estimator from imposing shape restrictions based on economic theory

the demand for gasoline evidence from household survey data summary in this paper we investigate the demand for gasoline in canada using recent annual expenditure data from the canadian survey of household spending over a 13 year period from 1997 to 2009 on three expenditure categories in the transportation sector gasoline local transportation and intercity transportation in doing so we use three of the most widely used locally flexible functional forms the almost ideal demand system aids of deaton and muellbauer 1980 the quadratic aids quaids of banks et al 1997 an extension of the simple aids model that can generate quadratic engel curves and the minflex laurent model of barnett 1983 which can also generate quadratic engel curves we pay explicit attention to economic regularity argue that unless regularity is attained by luck flexible functional forms should always be estimated subject to regularity as suggested by barnett 2002 and impose local curvature to produce inference consistent with neoclassical microeconomic theory our findings indicate that the curvature constrained minflex laurent model is the only model that is able to provide theoretically consistent estimates of the canadian demand for gasoline our estimates show that the own price elasticity for gasoline demand in canada is between 0 738 and 0 570 less elastic than previously reported in the literature copyright 2013 john wiley sons ltd

managerial objectives capital structure and the provision of worker incentives worker incentive schemes are invariably assumed to be administered by an owner entrepreneur who has an incentive to understate worker performance after the event while tournaments can overcome this problem they discourage cooperation between workers we show that a professional manager concerned with equality between workers and with avoiding bankruptcy rather than maximizing shareholder wealth will conduct a tournament that preserves individual effort incentives while promoting cooperation between workers the theory predicts lower debt levels and more compressed pay scales as cooperation becomes more important in the limit this becomes a group bonus scheme supported by blue chip debt

subordination of american capital abstract to economists agency problems present challenges that can be resolved through optimal contracting or incentive mechanisms to politicians agency problems represent entitlements to be allocated among favored constituencies corporate management constitutes a powerful constituency independent of the interests of workers local communities and other corporate stakeholders the political process has for politically rational but economically dabatable reasons systematically subordinated investors desire to resolve agency problems to managers desire to be protected from capital market discipline politically explicit modes of analysis thus complement traditional tools of finance theory and improve our ability to explain capital market structure and behavior

work incentives hierarchy and internal labor markets this paper argues that contracts with payment based on a ranking of employee performance can provide performance incentives even under asymmetric information that prevents payment based on individual performance only being enforceable such contracts also fit with five features of labor markets that have aroused considerable interest 1 hierarchical wage structures 2 internal promotion 3 wage rates that rise with seniority and experience more than productivity 4 the variance of earnings increasing with experience and 5 wage rates attached to jobs rather than individuals with differentials set by administrative procedures rather than by reference to external market wages

modeling gasoline demand in the united states a flexible semiparametric approach abstract the focus of this paper is on the modeling and estimation of quarterly state level gasoline demand in the united states the existing literature may not appropriately evaluate the price elasticity and income elasticity of gasoline demand most studies fail to address the possible heterogeneity in gasoline demand elasticities that may arise from a variety of sources the endogeneity issue of gasoline price has remained redundant throughout the literature i address these challenges using a flexible demand model and a recently developed estimation technique the econometric approach allows for functional coefficients to accommodate the heterogeneity in demand elasticities several instrumental variables are used to investigate the endogeneity of gasoline price the estimation results provide strong evidence of heterogeneous gasoline demand elasticities across states and over time some state level attributes along with income and macroeconomic shocks are the potential sources of heterogeneity

a bayesian sampling approach to measuring the price responsiveness of gasoline demand using a constrained partially linear model partial linear models provide an intuitively appealing way to examine gasoline demand because one can examine how response to price varies according to the price level and people s income however despite their intuitive appeal partial linear models have tended to produce implausible and or erratic price effects blundell et al 2012 propose a solution to this problem that involves using slutsky shape restrictions to improve the precision of the nonparametric estimate of the demand function they propose estimating a constrained partially linear model through three steps where the weights are optimized by minimizing an objective function under the slutsky constraint bandwidths are selected through least squares cross validation and linear coefficients are estimated using profile least squares a limitation of their three step estimation method is that bandwidths are selected based on pre estimated parameters we improve on the blundell et al 2012 solution in that we derive a posterior and develop a posterior simulation algorithm to simultaneously estimate the linear coefficients bandwidths in the kernel estimator and the weights imposed by the slutsky condition with our proposed sampling algorithm we estimate a constrained partially linear model of household gasoline demand employing household survey data for the united states for 1991 and 2001 and for canada for 2006 2009 and find plausible price effects

the effect of population density road network density and congestion on household gasoline consumption in u s urban areas abstract this paper applies both semiparametric and parametric approaches to explore the effect of population density freeway road density and congestion on household gasoline consumption in u s urban areas while controlling for household demographic and economic characteristics regression results indicate that households living in those urban areas with higher freeway densities higher levels of congestion or lower population densities consume more gasoline

classic promotion tournaments versus market based tournaments as initially formulated in the seminal analysis of lazear and rosen 1981 an important perspective for understanding the role of promotions in firms is the tournament perspective that is a promotion and in particular the wage increase associated with a promotion is a prize that serves as an incentive for workers to exert effort and take other actions beneficial to the firm such as the accumulation of human capital in this paper i consider whether the best way to model promotion tournaments is by having firms commit to prizes ex ante as in lazear and rosen s initial formulation or whether promotion prizes should be modeled as arising from the signaling role of promotions and the competition between firms for promoted workers

nonparametric regression techniques in economics this introduction to nonparametric regression emphasizes techniques that might be most accessible and useful to the applied economist the paper begins with a brief overview of the class of models under study and central theoretical issues such as the curse of dimensionality the bias variance trade off and rates of convergence the paper then focuses on kernel and nonparametric least squares estimation of the nonparametric regression model and optimal differencing estimation of the partial linear model constrained estimation and hypothesis testing is also discussed empirical examples include returns to scale in electricity distribution and hedonic pricing of housing attributes

thresholds in the process of international financial integration abstract the financial crisis has re ignited the fierce debate about the merits of financial globalization and its implications for growth especially for developing countries the empirical literature has not been able to conclusively establish the presumed growth benefits of financial integration indeed a new literature proposes that the indirect benefits of financial integration may be more important than the traditional financing channel emphasized in previous analyses a major complication however is that there seem to be certain threshold levels of financial and institutional development that an economy needs to attain before it can derive the indirect benefits and reduce the risks of financial openness in this paper we develop a unified empirical framework for characterizing such threshold conditions we find that there are clearly identifiable thresholds in variables such as financial depth and institutional quality the cost benefit trade off from financial openness improves significantly once these threshold conditions are satisfied we also find that the thresholds are lower for foreign direct investment and portfolio equity liabilities compared to those for debt liabilities

how do oil producers respond to oil demand shocks abstract this paper analyzes the response of international oil producers to demand induced changes in the price of crude oil during 1975 2011 focusing on potential differences between opec and non opec countries the goal is to derive consistent estimates of the short run price elasticity of crude oil supply at the country level i find that oil producers hardly respond to demand shocks within the same month and that the corresponding impact price elasticities of supply are statistically indistinguishable from zero while there is little evidence of differences in the dynamic responses to a typical flow demand shock on average over the sample period opec members seem to curtail production in response to a speculative demand shock whereas non opec production expands significantly flow and speculative demand shocks account for a nontrivial fraction of the total variability in country level crude oil supply

fuel price increases and the timing of changes in household driving decisions abstract using the oil price increase of 1979 as a natural experiment and several event study specifications this paper finds evidence that the oil spike induced significant decreases in carbon emissions on both the intensive miles driven and extensive auto fuel efficiency margins further it appears that substitution on the intensive margin occurred instantaneously whereas extensive margin substitution occurred with a significant lag given the timing of the changes the results appear robust to the implementation of corporate average fuel economy cafe standards over the same time period these findings have important implications for estimating demand elasticities for durable goods with respect to energy prices and the price elasticity of fuels themselves

a collective tournament abstract traditional tournaments among workers yield suboptimal levels of helping efforts while collective incentives generate free riding or lack incentive compatibility we confront these problems using a tournament between workplaces under fairly restrictive conditions the collective tournament is first best and incentive compatible

measuring consumer welfare with mean demands the welfare change from a price increase for example the compensating variation cv is often calculated using the expenditure function from an estimated demand if there is unobserved preference heterogeneity then the estimated demand is an average over households with different preferences and the cv from the mean demand does not generally equal the mean cv we give conditions ensuring that the cv from the mean demand equals the mean cv is less than the mean cv and approximates the mean cv better than the change in consumers surplus a necessary condition is that demands become more dispersed as income rises

estimating the distribution of welfare effects using quantiles this paper proposes a framework to model empirically welfare effects that are associated with a price change in a population of heterogeneous consumers which is similar to hausman and newey 1995 but allows for more general forms of heterogeneity individual demands are characterized by a general model which is nonparametric in the regressors as well as monotonic in unobserved heterogeneity in this setup we first provide and discuss conditions under which the heterogeneous welfare effects are identified and establish constructive identification we then propose a sample counterpart estimator and analyze its large sample properties for both identification and estimation we distinguish between the cases when regressors are exogenous and when they are endogenous finally we apply all concepts to measuring the heterogeneous effect of a chance of gasoline price using us consumer data and find very substantial differences in individual effects across quantiles

the demand for ethanol as a gasoline substitute abstract this paper estimates household preferences for ethanol e85 as a gasoline e10 substitute i develop a theoretical model linking the shape of the ethanol demand curve to the underlying distribution among households of willingness to pay for ethanol i estimate the model using instrumental variables techniques and data from many retail fueling stations i find that a 0 10 per gallon increase in ethanol s price relative to gasoline leads to a 12 16 decrease in the quantity of ethanol demanded my findings imply that preferences for ethanol are heterogeneous and that a substantial fraction of households are willing to pay a premium for the fuel this reduces substantially the simulated efficiency cost of an ethanol content standard since some households choose ethanol without large subsidies mitigating deadweight losses

household gasoline demand in the united states supported by the mit center for energy and environmental policy research the u s dept of energy and the national science foundation

elasticities of transport fuels at times of economic crisis an empirical analysis for spain abstract this paper provides an updated calculation of the price and income responsiveness of spanish consumers of transport fuels with an explicit exploration of the effects of the recent economic crisis we examine separate gasoline and diesel demand models using a set of estimators on a panel of 16 spanish regions over the period 1999 2015 the paper confirms the persistence of low own price elasticities both for diesel and gasoline in the short and long runs it also shows that the crisis of 2008 2013 slightly increased the price elasticity of demand for transport fuels with a higher effect on diesel than on gasoline by contrary the crisis slightly reduced the income elasticity of transport fuel demand given the intensity and length of the economic recession in spain the results of this paper may be useful to anticipate the effects of domestic public policies that impact transport fuel prices as well as to advance some of the potential consequences of crises elsewhere

employment tenure and earnings profiles in japan and the united states comments the relationship between job tenure and annual earnings in japan has received considerable attention from social scientists examining employment contracts and the japanese compensation system in their widely cited article masanori hashimoto and john raisian 1985 using data for 1980 showed that japanese men have greater job tenure than comparable workers in the united states and that the earnings of japanese men rise more rapidly with increased tenure they found that an additional year of tenure increases earnings in both small and large firms in japan more than does an additional year of general market experience their results for the united states indicate that general market experience increases earnings more than an additional year of job tenure the 1970 s and 1980 s were a period of substantial change in japanese labor markets due to the rapid aging of the population and the restructuring of the economy following the oil crisis the present analysis extends the work of hashimoto and raisian by estimating earnings equations for japanese men for the years 1971 1976 1981 and 1986 specifically we wish to investigate whether hashimoto and raisian s findings have been stable over time or whether changes in the labor market have altered the importance of tenure relative to total labor market experience in the japanese labor market i changes in the labor market

a semiparametric model of household gasoline demand gasoline demand studies typically generate a single price and income elasticity for a country it is however possible that these elasticities may differ among various socio economic groups at the same time parametric gasoline demand models may not be flexible enough to capture the changes in price elasticities with different levels of income this paper models us gasoline demand using more flexible semiparametric techniques accommodating the possibility of differences in responses among households the econometric model employs a non parametric bivariate smoothing for price and income and a parametric representation of other explanatory variables possible heterogeneity in price and income elasticities is modelled through interacting price and income with demographic variables results show that price responses do vary with demographic variables such as income multiple vehicle holding presence of multiple wage earners or rural or urban residential locations households responses to a price change decrease with higher income multiple vehicle and multiple earner households also show higher sensitivity to a price change households located in urban areas reduce consumption more than those in rural areas in response to an increase in price comparison of the flexible semiparametric model with a parametric translog model however reveals no significant differences between results and the parametric models have the advantage of lower computational requirements and better interpretability

competition on many fronts a stackelberg signaling equilibrium an economic agent the incumbent is operating in many environments at the same time these may be locations markets or specific activities he is informed of the particular conditions relevant to each situation his action in each case is observable by another agent the entrant who does not have the private information because the incumbent is in operation in many environments simultaneously the entrant has the ability to discern the exact statistical relationship between the incumbent s action and information and we assume that he cannot commit not to draw this inference at each location the entrant must choose one of two actions which we call attack or no attack this paper concerns the interplay between these sets of decisions we characterize the optimal actions of the incumbent under the assumption that he can commit to his decisions and thus that he will behave as a stackelberg leader by manipulating the inferences drawn by the entrant the solution obtained is compared with and contrasted to the bayesian perfect equilibria of a game where both players move simultaneously that game is a more appropriate model of the no commitment case thus the value of the possibility of commitment and manipulation of the entrant s beliefs is assessed some applications are discussed