cost uncertainty and the rate of investment abstract this paper examines the effect of cost and price uncertainty on the optimal rate of investment by firms within a general equilibrium framework former works which have studied this issue like hartman 1972 and abel 1983 1984 1985 have come to the conclusion that this effect is positive since increased price uncertainty raises expected profitability but these studies assume a fixed discount rate which is equivalent to assuming that consumers are risk neutral this paper shows that if consumers are risk averse the effect of uncertainty may be reversed and investment may be depressed when price or cost uncertainty is increased

asymmetric price adjustment and economic fluctuations this paper considers a possible explanation for asymmetric adjustment of nominal prices the authors present a menu cost model in which positive trend inflation causes firms relative prices to decline automatically between price adjustments in this environment shocks that raise firms desired prices trigger larger price responses than shocks that lower desired prices the authors use this model of asymmetric adjustment to address three issues in macroeconomics the effects of aggregate demand the effects of sectoral shocks and the optimal rate of inflation copyright 1994 by royal economic society

environmental policy and international trade when governments and producers act strategically some environmentalists express concern that trade liberalization may damage the environment by giving governments incentives to relax environmental policies to give domestic producers a competitive advantage support for such concern may be given by models of imperfectly competitive trade where there may be rent shifting incentives for governments to relax environmental policies but there are also incentives for producers to act strategically e g through their investment in rd ii allowing governments to act strategically increases the incentive for producers to act strategically iii welfare is lower when both parties act strategically and iv strategic behavior by producers and governments is greater when governments use emission taxes than when they use emission standards

ownership and environmental regulation evidence from the european electricity industry abstract the paper investigates how ownership affects the environmental performance in developed countries where environmental regulation is introduced in the form of market based instrument by looking at a cross country panel dataset of 29 power markets around europe over the period 1990 2012 we find empirical evidence that an increase of public ownership as measured by the oecd etcr index is associated with a reduction of both greenhouse gas emissions and carbon intensity we also find that the implementation of the european emissions trading scheme ets had a limited impact on emissions reduction due to lax allocation of allowances the positive effect of public ownership on environmental performance has been significant even after the introduction of the ets giving additional incentives to mitigate emissions when the ets cap was not stringent enough this evidence suggests that government control over power companies in europe can has created idiosyncratic incentives to improve environmental quality complementing environmental regulation in the achievement of environmental goals when the latter was absent or sub optimal

a note on competitive investment under uncertainty uncertainty over future output prices or input costs can affect investment by a riskneutral firm in two opposing ways first it can increase the value of the marginal unit of capital which leads to more investment this only requires that the stream of future profits generated by the marginal unit be a convex function of the stochastic variable by jensen s inequality the expected present value of that stream is increased this result was demonstrated by richard hartman 1972 and later extended by andrew abel 1983 and others in their models constant returns to scale and the substitutability of capital with other factors ensure that the marginal profitability of capital is convex in output price and input costs even with fixed proportions however this convexity can result from the ability of the firm to vary output so that the marginal unit of capital need not be utilized at times when the output price is low or input costs are high if investment is irreversible and can be postponed a second effect of uncertainty is to create an opportunity cost of investing now rather than waiting for new information to arrive before committing resources this increases the full cost of investing in a marginal unit of capital which reduces investment 2 hence the net effect of uncertainty on irreversible investment depends on the size of this opportunity cost relative to the increase in the value of the marginal unit of capital the sign of the net effect is significant because of its possible policy implications pindyck 1988 and giuseppe bertola 1989 developed models in which a firm faces a downward sloping demand curve and found the net effect to be negative ricardo caballero 1991 has recently studied investment by an individual firm facing a stochastically shifting demand curve he shows that as returns to scale become constant and the elasticity of demand faced by the firm rises this opportunity cost of investing now rather than waiting approaches zero thus in the limit of constant returns and an infinitely elastic demand curve an increase in uncertainty tends to raise rather than decrease current investment even if that investment is irreversible it is important to stress that caballero s limiting result treats the firm in isolation and describes the effect of a meanpreserving increase in price uncertainty and not an increase in industry wide demand uncertainty this note shows that in a competitive market the key interactions between irreversibility and uncertainty occur at the industry level and can only be understood by making price and industry output endogenous 3 doing so restores the positive opportunity cost associated with irreversible investment in addition caballero s result is based on a model with convex adjustment costs an innovative aspect of the model is that these costs can be asymmetric thereby allowing for partial or complete irreversibility complete irreversibility corresponds to a cost of massachusetts institute of technology cambridge ma 02139 this work was supported by the national science foundation under grant no ses 8618502 and by mit s center for energy policy research my thanks to julio rotemberg and especially ricardo caballero for very helpful comments and discussions 1then the marginal profit of capital at each time t in the future is max o pt ct where ct is variable cost thus a unit of capital represents a set of all options on future production which are worth more the greater the variance of pt or ct 2for a detailed discussion of this point and a survey of the recent literature on irreversibility and its implications for investment and market evolution see pindyck 1991 3studies that make price endogenous include steven lippman and richard rumelt 1985 avinash dixit 1989 1991 and john leahy 1990

long run relationship between output capital labour and productivity in emerging market economies long run relationship between the variables involved in the production function is an issue that is important particularly in developing countries as the neoclassical production function is best suited for developed countries and its applicability to developing countries is questionable in various ways this motivates us to do this based on time series analysis taking indian textile industry as an example which is currently at its crucial stage as a critical industry in an emerging economy with the phasing out of multi fibre arrangement in 2005 this study documents existence of cointegration between capital and output negative impact of employment shocks on output changes substitutability between changes in capital and labour negative effect of shocks to changes in capital stock on productivity and negative effect of employment shocks on future productivity these results are in line with the general perceptions about this industry and with the standard neoclassical propositions as explained in t

real investment decisions under adjustment costs and asymmetric information abstract we study the cost of adjustment model of investment when there is asymmetry of information between owners the principal and managers the agent information asymmetry distorts the relationship between investment and the cost of capital for all agent types and a regime of inaction appears over a certain cost range in an observationally different way than when fixed adjustment costs or irreversibilities cause a similar phenomenon uncertainty in the form of an increase in the spread of agents types tends to reduce investment despite symmetric adjustment cost and perfect competition the model gives a new interpretation of tobin s q under asymmetric information explaining some results of the mergers and acquisition literature

is the investment uncertainty relationship nonlinear an empirical analysis for the netherlands we examine the investment uncertainty relationship for a panel of dutch non financial firms the system generalized method of moments gmm estimates suggest that the effect of uncertainty on investment is nonlinear for low levels of uncertainty an increase in uncertainty has a positive effect on investment while for high levels of uncertainty an increase in uncertainty lowers investment this result is in line with a number of theoretical studies but has never been documented empirically

environmental regulation and competitiveness empirical evidence on the porter hypothesis from european manufacturing sectors abstract this paper investigates the weak and strong versions of porter hypothesis ph focusing on the manufacturing sectors of 17 european countries between 1997 and 2009 the hypothesis that well crafted and well enforced regulation would benefit both the environment and the firm was originally proposed by porter 1991 and porter and van der linde 1995 to date the literature has analyzed the impact of environmental regulation on innovation and on productivity mostly in separate analyses and focusing on the usa the few existing contributions on europe study the effect of environmental regulation either on green innovation or on performance indicators such as exports we instead look at overall innovation and productivity impacts first focusing on overall innovative activity allows us to account for potential opportunity costs of induced innovations second productivity impacts are arguably the most relevant indicators for the strong ph as a proxy of environmental policy stringency we use pollution abatement and control expenditures pace one of the few sectoral level indicators available we remedy upon its main drawback namely potential endogeneity by adopting an instrumental variable estimation approach we find evidence of a positive impact of environmental regulation on the output of innovation activity as proxied by patents thus providing support in favor of the weak ph this result is in line with most of the literature on the other front we find no evidence in favor of the strong ph as productivity appears to be unaffected by the degree of pollution control and abatement efforts

analytical approximations in models of hysteresis decisions made under ongoing uncertainty and costly reversibility entail a range of the state variable where inaction is optimal which in turn produces hysteresis permanent effects of temporary shifts the range is usually defined by non linear equations that need numerical solutions in this paper a technique of analytical approximations is developed and applied to two models menu costs and investment the resulting explicit solutions help clarify why hysteresis is important even for small irreversibility in the menu cost model hysteresis is two orders of magnitude larger than under the akerlof yellen or mankiw assumptions when decisions that are costly to reverse are made under conditions of ongoing uncertainty the optimum policy usually entails a range of inertia the action should be taken only when the value of the underlying state variable becomes especially favourable and reversed only when it becomes especially unfavourable there is an intermediate range over which inaction is optimal this in turn gives rise to hysteresis starting from a value in the range of inertia if the state variable crosses the action trigger point and then returns to its original level the action will be taken but not reversed thus a temporary change will leave a permanent effect numerical solutions for models of irreversible investment show that the range of inaction is remarkably large even when the cost of reversal is small see brennan and schwartz 1985 constantinides 1986 and dixit 1989a b for examples of this unfortunately the equations tlhat determine the optimum policy are highly non linear they do not have analytical solutions therefore we lack a clearer and more general understanding of why hysteresis is numerically so important in this paper i derive analytical approximations for the solutions of more general problems of this kind when the costs of change are small the idea that small costs of change induce large amounts of inertia has been popularized in the model of akerlof and yellen 1985 mankiw 1985 and others in these models second order small costs of making price changes yield price stickiness in response to first order changes in the money supply this is a simple application of the envelope theorem but these models are static and their application to a dynamic reality must assume either permanent shocks or static expectations when there is ongoing uncertainty which is rationally expected by the decision maker the option value of the status quo enlarges the zone where inaction is optimal adding these features to the mankiw akerlof yellen may model i show that fourth order small costs of change generate first order inertia

uncertainty and growth of the firm using data from a survey of 1 097 small and medium sized non listed dutch firms we investigate the relation between growth of the firm and uncertainty we focus on the impact of sales uncertainty on various types of investment we find that sales uncertainty measured by the conditional variance has a mixed impact on various investment decisions we include an analysis of the relevance of financial structure and firm size on the growth uncertainty relation

policy options to improve the effectiveness of the eu emissions trading system a multi criteria analysis abstract this paper considers several policy options which have been proposed to improve the functioning of the ets these options require an intervention either on the ets cap 30 target set aside carbon central bank long term target or on the carbon price european and national price floor we analyse the impact of each policy on the ets carbon price and emissions a multi criteria evaluation method is applied to compare the policy options against a plurality of environmental economic and procedural criteria we find that the final ranking depends on the goals to be achieved i e the relative weights attributed to the criteria when policymakers want mainly to support the carbon price both in the short and long run while improving ets flexibility and harmonization the ccb and the eu price floor are respectively ranked as first and second best options as the preference for environmental and implementation goals gradually increases the position of the eu price floor and ccb options tend to invert the 30 target should be adopted when reducing emissions is the priority goal while a national price floor is the worst option in this case nevertheless self interested states looking for a relatively quick feasible solution may find it optimal

spatial competition with a land market hotelling and von thunen unified we introduce into the standard spatial competition model the consumption of land by households and study the spatial competition under the influence of a land market in contrast to the standard assumption of a fixed given distribution of households we introduce the possibility of households relocation in reaction to firms location decisions thus the spatial distribution of households is treated as endogenous and a land market is introduced on which households compete for land use households consume simultaneously land and firms output accordingly the demand of each household becomes in turn endogenous as it depends on the income left after the land rent is paid not surprisingly the results obtained within this more general framework prove to be very different from the standard results for example in the 2 and 3 firm cases the optimal configuration of firms is a nash equilibrium when transport costs are high enough or the amount of vacant land is large enough the existence property is restored in the 3 firm case when the transport costs are high enough the introduction of vacant land causes a discontinuous change in the set of equilibrium configurations

environmental performance of state owned and privatized eastern european energy utilities abstract privatization in eastern europe has helped in the transition of the region s economies from planned to free market however the effects of privatization on the environment are relatively unknown and many firms remain under state ownership today we compare the environmental performance of state owned and privatized energy utility plants in eastern europe utilizing a novel panel data that includes reported sulfur dioxide emissions energy input and ownership status we find that state owned plants emit more sulfur dioxide than privately owned plants this is environmentally significant as privatization is associated with a reduction in emissions of about 55

the adoption of new technology by the farmers in taiwan this study addresses the technologies the farmers adopted their reasons for adopting these technologies and the result of adopting these technologies the design and strategy used to collect the data needed are both qualitative and quantitative farmers who practised traditional farming methods and those who adopted the new technologies were both given survey questionnaires and were interviewed the result of the study shows that the technologies applied by the farmers are the use of tractors in tilling the ground the use of machinery in planting the practice of irrigation and the use of a combination of organic and commercial fertilizers the reasons for the adoption of the latter are the availability of chemicals and the convenience of their use and this is used to enhance the growth of plants the results of the new technology adoption are high yields of produce production of hybrid crops and the saving of labour thus increasing the income of the farmers

a foundation of location theory consumer preferences and demand abstract location models with a continuum of consumers have severe conceptual shortcomings this article considers an alternative foundation for location economics the commodity space of each of a finite number of consumers is the collection of measurable subsets of land this space is so large that a solution to the consumer maximization problem does not always exist the main result is the definition and use of a topology on land parcels to show that a solution will always exist for utilities continuous with respect to the topology the underlying preferences are exposed

market concentration macroeconomic uncertainty and monetary policy abstract this paper studies the effect of market structure and macroeconomic uncertainty on the transmission of monetary policy we motivate our analysis with a simple model which predicts that 1 investment and production in more concentrated sectors are more affected by demand shocks and 2 high uncertainty makes investment and production more sensitive to demand shocks the empirical analysis estimates the effect of monetary shocks on sectoral output for different sectors in the us using a structural vector autoregressive var approach the results are generally consistent with the theoretical predictions

the economics of controlling stock pollutants an efficient strategy for greenhouse gases abstract optimal control theory is applied to develop an efficient strategy to control stock pollutants such as greenhouse gases and hazardous waste the optimal strategy suggests that at any time the marginal costs of abatement should be equated with the present value of the marginal damage of timely unabated emission the optimal strategy calls for increasingly light abatement over time as the pollutant stock accumulates the optimal policy applied to greenhouse gases suggests moderate abatement efforts at present with the potential for much greater future efforts

real options delay vs pre emption do industrial characteristics matter this paper presents an empirical study of the channels of influence from uncertainty to fixed investment suggested by real options theory using panel data from the confederation of british industry cbi industrial trends survey we report ols estimates of the impact of uncertainty on investment where the regressors are augmented by cross sectional averages of the dependent variable and of the individual specific regressors as recently suggested by pesaran pesaran m h 2006 estimation and inference in large heterogeneous panels with a multifactor error structure econometrica 74 967 1012 the cross industry pattern of results is checked for consistency with the pattern predicted by real options theory using a specially constructed data set of industrial characteristics we find that irreversibility is able to predict the pattern detected but only when combined with a measure of the information advantage of delay there is also evidence for expansion options effects industries with high r d and advertising intensities tend to have positive uncertainty effects

ownership unbundling and investment in electricity markets a cross country study abstract this paper is the first to explicitly test for the presence of a trade off between static and dynamic efficiency and a trade off between vertical economies and competition in a regulated industry the electricity industry we show for 16 european countries over the period 1998 2008 that higher electricity end user prices in a country subsequently lead to larger aggregate investments in the capital stock i e in generation distribution and transmission assets moreover there is a trade off between vertical economies and competition ownership unbundling and forced access to the incumbent transmission grid increases competition but come at the cost of lost vertical economies generally we find that regulation that affects only the market directly like the establishment of a wholesale market or free choice of suppliers increases aggregate investment regulation however that adversely affects the incumbent directly like ownership unbundling decreases aggregate investment spending

assessing economic activities an example from central business districts the central business district cbd is a dynamic part of the city that changes drastically over time and responds to forces and demands for activities from within and from other countries however it is extremely difficult to quantify the various propositions put forward for measuring economic activities in the cbd due to the paucity of statistical data planning intervention thus becomes extremely difficult as other forces beyond the control or knowledge of the planner play crucial roles in determining what activities will locate in the cbd and where they will locate this study attempts to explore a view of how to measure and assess central business district economic activities for planning purposes it follows a critical discussion of the nature of the cbd by pointing to empirical studies including examples from the new york metropolitan region and the city of london moreover it discusses indicators could be used to measure and assess economic activities in the cbd by highlighting planning purpos

investment in new activities and the welfare cost of uncertainty abstract recent literature has shown that trade distortions are associated with first order costs stemming from the induced drop in the formation of new activities we demonstrate that uncertainty may induce similar welfare costs and that these costs apply also to a closed economy this argument is illustrated in romer s model of a dependent economy where foreign direct investment is needed to enable the importation of capital goods and intermediate products used in domestic production we show that knightian uncertainty inhibits the formation of new activities leading to first order losses whereas risk aversion alone leads to second order losses

increasing returns and perfect competition the role of land abstract the classical inconsistency between increasing returns and perfect competition is studied for example if firms must pay a fixed cost of entry but then can produce using a constant returns to scale technology they will generally operate at a loss necessitating a government subsidy in order to attain an efficient allocation here we provide examples demonstrating that perfect competition and increasing returns can be consistent by extending the alonso model to include production the key is that producers use intervals of land and the price they pay for land interior to the parcels can be adjusted to provide an implicit subsidy

aggregate uncertainty capacity utilization and manufacturing investment theory suggests that the level of uncertainty affects the investment decision for firms although the sigh of the effect is ambiguous a garch m estimator is used to model the conditional variance of gdp as a proxy for uncertainty this measure is then employed in a simple model of the investment decision the results are that the level of aggregate uncertainty has a significant negative effect on manufacturing investment in particular periods there were very large effects on average uncertainty reduces investment by about 5 but in 1974 the effect peacked at 48

industry wide versus firm specific uncertainty and investment british company panel data evidence this paper presents evidence on the prediction that the impacts of firm specific and industry wide uncertainty on investment will be different results show that these work in opposing directions and that the effect of industry specific uncertainty is stronger in concentrated industries

the effect of uncertainty on investment timing in a real options model abstract this paper examines the effect of uncertainty on investment timing in a canonical real options model we show that the critical value of a project that triggers the exercise of the investment option exhibits a u shaped pattern against the volatility of the project this is due to the two countervailing risk and return factors in effect we further show that such a u shaped pattern is inherited by the expected time to exercise the investment option thus for relatively safe projects greater uncertainty shortens the expected exercise time and thus enhances investment this is in sharp contrast to the negative investment uncertainty relationship commonly found in the extant literature finally we show that the positive investment uncertainty relationship is more likely for high growth projects than for low growth projects

the impact of resource conditions and environmental uncertainty on inter firm alliance strategies the resource dependence theory and the resource based view have been put forward in order to explain inter firm alliance strategies according to these approaches the main driver for alliance formation is the internal resource condition of the firm and the need to acquire external resources we argue that resource motivation is moderated by perceived environmental uncertainty first we conceptualize how perceived environmental uncertainty and resource conditions independently affect the probability of firms to develop alliance strategies then we analyse how the role of resource conditions is affected by environmental uncertainty finally we test our point of view using a sample of portuguese firms

what happened to efficiency in electricity industries after reforms the last two decades have witnessed widespread power market reforms in both developed and developing countries that have cost billions of dollars among the key aims and assumptions of these reforms there has always been realization of improvements in power sector efficiency this paper questions the validity of this hypothesis using panel data from 92 countries covering the period 1982 2008 empirical models are developed and analyzed the research findings suggest that the impact of the reforms on electricity industry performance is statistically significant but also limited the results imply that after controlling for country specific variables application of liberal market models in electricity industries slightly increases efficiency in power sector besides we detect a positive relationship between reform process and the percentage share of network transmission and distribution losses in total electricity supplied meaning that as countries take more reform steps the network losses as a fraction of power generated tend to increase moreover the study puts forward that income level and other country specific features are more important determinants of industry efficiency than the reform process overall contrary to expectations of substantial increases in sector efficiency the paper concludes that introducing a decentralized market model with competition in the electricity sector has a limited increasing effect on power industry performance

the effects of uncertainty and adjustment costs on investment in the almond industry a neoclassical model of investment behavior is developed wherein firms are assumed to maximize the expected present value of net revenue under leontief technology prices and yields are assumed to be stochastic this framework yields investment as a function of the expected present value of the output from one unit of capital and the variance of the expected value this theory is applied to investment in the almond industry the model outperforms both a model without uncertainty and one with neither uncertainty nor adjustment costs using in sample and out of sample tests copyright 1989 by mit press

competitive equilibria in production economies with an infinite dimensional commodity space the existence of competitive equilibrium is established for economies with a produc tion sector and an infinite dimensional space of commodities the cru cial assumptions which are required beyond those required in the fin ite dimensional setting are bounds on marginal rates of substitution and marginal rates of transformation copyright 1987 by the econometric society

on optimal reservation prices in auctions the theory of auction design examines how various factors affect the outcome of an auction most of the existing literature focuses on how varying the amount of information available to each bidder affects the bid taker s expected revenue when all other factors remain constant this paper studies how the bid taker s expected revenue varies with changes in the auction format when such changes affect the number of bidders and in turn the bidders maximum value for the object being sold specifically we examine how varying the reservation price or screening level affects the bid taker s expected revenue though its effect on the number of bidders for two simple examples the losses associated with a reduced number of bidders outweighs any benefits that nontrivial reservation prices might have had in models with an exogonously set number of bidders

long run growth and volatility which source really matters the aim of the article is to analyse the relationship between long run growth and business cycle volatility in particular the main purpose of this article is to identify which source of volatility is most detrimental to growth using cross country data from 1970 to 2000 and several indicators of volatility such as inflation exchange rate government expenditure output and investment volatility this article shows that although all these measures of volatility are remarkably harmful for growth business cycle investment volatility is the main source that hampers long run growth this relation is robust to different measures of business cycle and to different sub samples of countries

non cooperative solutions for estate division problems in an estate division problem an estate has to be divided among several players whose total entitlement to the estate exceeds its size this paper extends the non cooperative approach through a claim game as initiated by o neill 1982 by allowing players to put multiple claims on the same part of the estate and by considering the case where individual entitlements may exceed the estate a full characterization of the set of nash equilibria of the claim game is obtained both for restricted estate division problems where individual entitlements do not exceed the estate and for the general case variations on the claim game are considered which result in proportional division in equilibrium

emissions trading electricity restructuring and investment in pollution abatement this paper analyzes an emissions trading program that was introduced to reduce smog causing pollution from large stationary sources using variation in state level electricity industry restructuring activity i identify the effect of economic regulation on pollution permit market outcomes there are two main findings first deregulated plants in restructured electricity markets were less likely to adopt more capital intensive environmental compliance options as compared to regulated or publicly owned plants second as a consequence of heterogeneity in electricity market regulations a larger share of the permitted pollution is being emitted in states where air quality problems tend to be more severe jel l51 l94 l98 q53 q58 when the us federal government first began regulating major sources of air pollution in the 1960s the conventional approach to meeting air quality standards involved establishing maxi mum emissions rates or technology based standards for regulated stationary sources however economists have long maintained that an emissions permit market could more efficiently coor dinate pollution abatement activities provided a series of assumptions are met over the past few decades market based cap and trade cat approaches to regulating emissions from industrial point sources have become a centerpiece of environmental regulation in the united states in the theoretical first best permit market equilibrium the total social cost of meeting an emis sions cap is minimized each firm chooses a level of pollution abatement such that its marginal cost of reducing pollution is set equal to the social marginal benefit from emissions reduction in practice preexisting distortions in product markets that are subject to cat regulation may interfere with the emissions permit market s ability to operate efficiently this paper studies the effects of electricity market regulation on permit market outcomes in the context of a major us emissions trading program the nox budget program the recent wave of electricity industry restructuring in the united states has resulted in significant interstate variation in economic regulation consequently facilities in the same cat program face very different economic regu lation and investment incentives in their respective electricity markets whereas rate base regu lated plants are guaranteed to earn a rate of return on prudent investments in pollution abatement equipment deregulated plants operating in restructured electricity markets are offered no such

the logical foundations of urban economics are consistent the logical foundations of models in urban economics with continua of agents distributed over continuous spaces have recently been questioned it was argued among other things that these models cannot represent properly models with discrete numbers of households each occupying a parcel of land in this paper we propose a mapping based on the continuous model utility and defined over discrete parcels of land which determines the discrete model utility so that the equilibrium solutions of the two models coincide hence the continuous model of urban economics can be used as a tool for studying equilibria and comparative statics of a discrete model which appears to have sound logical foundations journal qf economic literature classification numbers 022 930 1990 academic press inc

determinants of pollution abatement in developing countries evidence from south and southeast asia abstract developing countries pa ticularly those in asia are fast adopting industrial pollution control standards similar to those in developed countries formal regulation has been greatly hampered however by the absence of clear and legally binding regulations limited institutional capacity lack of appropriate equipment and trained personnel and inadequate information on emissions one would predict highly pollution intensive production under such conditions our research however has uncovered strongly contradictory evidence despite weak or nonexistent formal regulation there are many clean plants in the developing countries of south and southeast asia of course there are also many plants which are among the world s most serious polluters what explains such extreme interplant variation this paper reviews evidence drawn from three empirical studies of plant level abatement practices conducted 1992 1994 the analyses test the importance of plant characteristics economic considerations and external pressure in determining environmental performance the results consistently show that pollution intensity is negatively associated with scale productive efficiency and the use of new process technology it is strongly and positively associated with public ownership but foreign ownership has no significant effect once other plant characteristics are taken into account among external sources of pressure community action or informal regulation emerges as a clear source of interplant differences in all three studies the results suggest that local income and education are powerful predictors of the effectiveness of informal regulation they also show that existing formal regulation has measurably beneficial effects even when it is quite weakly developed

on the land assembly problem abstract we consider a segment of the land market where the entire available land stock is needed for the realization of some indivisible development project the stock is shared by several landholders who either collude or negotiate independently with the developer over the prices of their lots investigating the price setting behavior of the landowners and the optimal strategy of the developer we show that landowners set more moderate prices under collusion than when acting independently in the latter case the individual asking price falls with the size of the land share and the total price increases with the number of landowners as regards the optimal strategy we find that the developer will in general not offer the lowest price he expects to be accepted by the landowners

supply and equilibrium in an economy with land and production a model with a finite number of consumers trading in land that can be changed through production is examined unlike most other models in urban economics land is modeled as measurable subsets of a compact set formally there are three major results conditions are found under which a solution to the producer s profit maximization problem exists secondly conditions are found under which a solution to the consumer s problem exists the assumptions used to prove these two results are standard finally the existence of an equilibrium is demonstrated copyright 1990 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

investment in risky r d programs in the face of climate uncertainty we analyze how the socially optimal technology rd and that uncertainty in damages interacts with uncertainty in the returns to rd and r d that reduces the emissions to output ratio and argue that this is a good representation of r d into fossil fuel technologies for r d programs into non carbon technologies optimal investment is higher in riskier programs our empirical model indicates that the optimal investment in a risky program is about 3 1 2 times larger than in a program with certain returns for r d programs aimed at reducing emissions in fossil fuel based technologies our results show that qualitatively investment is higher in less risky programs under most uncertain damage scenarios our empirical model shows however that the risk profile of fossil fuel based r d programs generally has little quantitative impact on optimal investment the exception is that when the probability of a catastrophe inducing full abatement is very high investment is about twice as high in risky programs compared to programs with certain returns

on the sign of the investment uncertainty relationship understanding the effects of uncertainty over any decision variable has fascinated economists for a long time risk aversion and incomplete markets are likely to make the investment uncertainty relationship negative e g roger craine 1989 joseph zeira 1989 what happens in the absence of risk aversion and incomplete markets is however ambiguous richard hartman 1972 and andrew b abel 1983 1984 1985 found that in the presence of symmetric convex costs of adjustment mean preserving increases in price uncertainty raise investment of a competitive firm as long as the profit function is convex in prices on the other hand the recent literature on irreversible investment e g robert s pindyck 1988 giuseppe bertola 1988 has shown that increases in uncertainty lower investment all these results have been derived under either risk neutrality or complete markets intuition suggests that the explanation for such a difference lies with the asymmetric nature of adjustment costs in the irreversible investment case as compared with the symmetry of the adjustment cost mechanisms proposed by abel and hartman although this intuition is confirmed in this paper asymmetric adjustment costs are shown not to be sufficient to explain why the results differ in fact a more hidden but at least as important difference between these two literatures is that the former assumes perfect competition and constant returns to scale whereas the latter assumes either imperfect competition or decreasing returns to scale or both 2 the purpose of this paper is to highlight the role of the decreasing marginal return to capital assumption due to either imperfect competition or decreasing returns to scale or both in determining the effects of adjustment cost asymmetries on the sign of the response of investment to changes in uncertainty under risk neutrality for this the paper develops a simple model with a cost of adjustment mechanism general enough to consider both symmetric convexity and irreversibility as special cases one of the most important findings is the lack of robustness of the negative relationship between investment and uncertainty under asymmetric adjustment costs3 to changes in the degree of competition in fact when firms are nearly competitive the conclusion of hartman and of abel holds no matter how asymmetric adjustment costs are studying adjustment cost mechanisms has a central role in understanding the dynamics of investment and its business cycle implications but conclusive results about the sign of the instantaneous relationship between uncertainty and investment should not be department of economics columbia university new york ny 10027 i am grateful to giuseppe bertola prajit dutta glen hubbard anil kashyap richard lyons and the referees for their useful comments 1the financial literature on investment has considered risk aversion through a premium in the discount rate determined by the capm capital asset pricing model intertemporal capm or consumption capm however often this discount rate is left unchanged when studying the response of investment to uncertainty changes e g pindyck 1988 pp 974 5 thereby omitting the effect of changes in uncertainty on investment due to risk aversion and incomplete markets 2in the typical version of the irreversible investment problem there is no cost of upward adjustments thus imperfect competition and or decreasing returns to scale are required to bound the size of the firm 3in this paper asymmetric adjustment cost refers to the case in which it is more expensive to adjust downward than upward certainly the opposite case is a trivial extension of the case studied in this paper

firms investment decisions in response to demand and price uncertainty we investigate the effect of demand and price uncertainty on firms planned and realized investment from a panel of manufacturing firms uncertainty measures are derived from firms own expectations about demand and prices and firm s sales we find that demand uncertainty at the time of planning depresses planned and subsequent realized investment firms do not revise their plans due to demand uncertainty at the time of spending suggesting that reducing demand uncertainty will only have lagged effects on investment we do not find any effect of price uncertainty our results are consistent with the behaviour of monopolistic firms with irreversible capital

macroeconomic uncertainty and private investment abstract this paper provides empirical support for a link between macroeconomic uncertainty and private investment in developing countries cross section regressions with constructed measures of uncertainty confirm that for developing countries uncertainty is negatively correlated with private investment

investment in greek manufacturing under irreversibility and uncertainty the message in used capital expenditures this article contributes to the existing literature by showing that uncertainty produces a nonuniform impact to the extent that different types of capital goods exhibit heterogeneous irreversibility which we define as asset specific irreversibility hence asset specific irreversibility is responsible for asymmetries in responses across types of capital goods to uncertainty we also show that for a given type of capital good uncertainty produces a variety of responses across sectors which we define sector specific irreversibility in other words sectoral differences in terms of the ability to substitute a given type of capital with labour introduce a second order effect of uncertainty on investment

tax uncertainty and investment a cross country empirical examination i introduction spanning a period of nearly 100 years of economic research a substantial body of literature has developed with the goal of explaining the behavior of investment over time 1 although many of these studies have considered the implications of tax policy for investment in an uncertain world most have also implicitly assumed that the tax policy itself does not contribute to the uncertainty the problem is that tax policy can be very uncertain in many cases 2 and to date we know little about the consequences especially from an empirical standpoint more generally empirical evaluations of uncertainty and investment are very limited compared with the development of theoretical analyses calcagnini and saltari 2000 and the case of tax uncertainty is no exception this article sets out to fill part of the intellectual void by empirically investigating the impact of volatility in effective tax rates on investment in a cross section of countries namely the 15 countries of the european union eu the united states and japan in doing so i first estimate tax rate volatility using an arch specification with data on effective capital tax rates i then provide panel regression results using the system generalized method of moments gmm sys estimator of arellano and bover 1995 see also blundell and bond 1998 which suggest that the volatility of effective tax rates on capital have a significant negative impact on investment per worker in these countries the remainder of the article proceeds as follows section ii briefly reviews the existing literature on tax policy uncertainty and investment as well as existing empirical studies of uncertainty in general and investment section iii develops the empirical model i employ to estimate the relationship between tax volatility and investment section iv then presents an analysis of effective tax rates in the eu countries the united states and japan followed by a discussion of the data and econometric issues in section v and an examination of the effects of tax rate volatility on investment in section vi section vii provides concluding remarks ii theoretical foundations tax policy uncertainty and investment although most of the voluminous literature on tax policy and investment under uncertainty ignores observed randomness in tax policy a recent set of literature has begun to explore these issues in some detail mostly through simulation 3 the basic premise underlying these studies is that because output price uncertainty tends to retard investment pindyck 1988 4 tax uncertainty might be expected to harm investment as well hassett and metcalf 1999 further credence to a negative relationship between tax uncertainty and investment is given by the business community s mantra that they cannot make plans if they don t have confidence in the tax structure bizer and judd 1989 223 these simulation studies however demonstrate that the impact of tax uncertainty depends crucially on the source and nature of the uncertainty contrary perhaps to conventional wisdom in some cases increased uncertainty can be shown to have positive effects on investment growth or welfare bizer and judd 1989 simulate the economic effects of introducing random tax policy in a dynamic general equilibrium model they find that if random tax rates or credits are serially correlated the target capital stock falls when taxes are high and rises when taxes are low their more interesting case considers independently and identically distributed random tax shocks in this case the authors find that randomness in investment tax credits generates large fluctuations in investment which have the effect of reducing both utility and production because both are concave functions as well revenue 5 they find that variance in future tax rates however is not important for long term investments and in fact raises nontrivial mounts of revenue at a welfare cost that is never more than the cost associated with raising an equivalent amount of revenue with a permanent increase in a deterministic tax rate

industrial ownership and environmental performance evidence from china the authors explore the differences in pollution control performance of industries with different types of ownership in china state owned soe collectively or community owned coe privately owned poe companies with foreign direct investment fdi and joint ventures about 1 000 industrial firms in three provinces of china were surveyed and detailed 1999 firm level information was obtained the authors analyzed the differences between firms in receiving and reacting to environmental regulatory enforcement community pressure environmental services as well as in the firm s internal environmental management among the different types of ownership the authors also conducted econometric analyses on the determinants of pollution discharge performance the results show that foreign direct investment and collectively owned enterprises have better environmental performances in terms of water pollution discharge intensity while state owned enterprises and privately owned enterprises in china are the worst performers the results also suggest that collectively owned enterprises in china do internalize environmental externalities

the econometric analysis of models with risk terms summary in this paper we have attempted to provide an integrated approach to the estimation of models with risk terms it was argued that there exist orthogonality conditions between variables in the information set and higher order moments of the unanticipated variable density these could be exploited to provide consistent estimators of the parameters associated with the risk term specifically it was recommended that an iv estimator should be applied with instruments constructed from the information set four existing methods commonly used to estimate models with risk terms are examined and applications of the techniques are made to the estimation of the risk term in the us c exchange market and the effects of price uncertainty upon production

investment and uncertainty in the international oil and gas industry abstract the standard theory of irreversible investments and real options suggests a negative relation between investment and uncertainty richer models with compound option structures open for a positive relationship this paper presents a micro econometric study of corporate investment and uncertainty in a period of market turbulence and restructuring in the international oil and gas industry based on data for 115 companies over the period 1992 2005 we estimate four different specifications of the q model of investment with robust results for the uncertainty variables the estimated models suggest that macroeconomic uncertainty creates a bottleneck for oil and gas investment and production whereas industry specific uncertainty has a stimulating effect

heterogeneous effects of regulation on the efficiency of the electricity industry across european union countries abstract this paper focuses on the relationship between the stringency of regulation oecd indicators and total factor productivity tfp growth in the electricity sectors of 19 european union countries for the period 1994 2007 both the oecd regulatory indicator and the tfp growth index have been decomposed in order to bring to light a complex picture of interrelations in which the negative impact of the overall regulation on productivity is the result of opposite forces estimation results tell us that only the stringency of entry regulation significantly reduces technological change whereas vertical integration exhibits a negative and significant impact only on the catching up process pure efficiency change lastly we found an interesting result concerning the explanatory variables of the scale efficiency change in this case only public ownership matters in other terms high levels of public in the structure ownership of electric companies guarantee improvements in reaching the optimal scale of production these heterogeneous effects are also confirmed when we use a different measure of efficiency that is the distance of the actual from the optimal reserve margin

optimal capital structure and investment with real options and endogenous debt costs we examine the joint optimization of financial leverage and irreversible capacity investment in a real options framework with risky debt and endogenous interest costs higher capacity ceteris paribus increases operating leverage and default probability but lowers ex post adjustment costs and generates larger tax shields a key insight is that financial leverage and capacity are substitutes in the debt market equilibrium we develop novel predictions about the effects of capital adjustment costs operating costs and uncertainty on optimal financial leverage and capacity that may potentially help explain ambiguous empirical results in the literature regarding the determinants of capital structure and investment received march 17 2016 editorial decision july 8 2017 by editor itay goldstein

adjustment costs uncertainty and the theory of investment the case of non renewable natural resources abstract this paper examines the effects of mineral price and extraction cost uncertainty on the investment program of a competitive resource extracting industry that faces convex costs of adjustment the results show that depletion of mineral reserves will slow down if the marginal adjustment cost function is concave or linear whereas the effect will be ambiguous if the function is convex

on models with an uncongestible public good and a continuum of consumers abstract this short note shows that models with an uncongestible or mildly congestible public good and a non atomic continuum of consumers have an interesting but unfortunate property only an infinite level of public good provision in the continuum economy can be approximated by feasible public good levels in a sequence of economies with finite populations we discuss the theoretical and practical problems this creates for familiar models that employ a continuum of consumers and a finite level of an uncongestible public good

revealed preference and location choice abstract the assumption that population and structural densities are defined over parcels of land with zero area is problematic when interpreting the standard residential land use model as approximating a large finite economy this paper extends revealed preference theory to depict a spatial economy with land parcels of finite area the model generalizes the standard utility function approach allowing for many consumer types with different tastes and incomes and labor leisure choice to show that the most important predictions of the standard theory hold in the general finite framework studied here

a critique of tiebout s theory of local public expenditures the last section of this paper presents a rigorous version of tiebout s theory of local public goods it is shown that equilibria exist and are pareto optimal this rigorous theory follows closely the more rigorous part of tiebout s work this rigorous theory makes a number of very special assumptions which make local public goods essentially private the body of this paper presents a series of examples which show that if one tries to generalize the rigorous version of tiebout s theory in a number of interesting directions then equilibria may no longer exist or may not be pareto optimal the conclusion is that tiebout s idea does not lead to a satisfactory general theory of local public goods the goal of this paper is to point out that tiebout s notion of equilibrium with local governments does not have the nice properties of general competitive equilibrium except under very restrictive assumptions tiebout 39 suggested that there are competitive forces which tend to make local governments allocate resources in a pareto optimal fashion consumers choose to live in those towns with the mix of taxes and public goods they prefer local governments choose this mix so as to attract inhabitants this idea may seem intriguing for it suggests that the invisible hand solves an important part of samuelson s perplexing public goods problem 32 tiebout in fact makes an argument which is nearly rigorous i give a rigorous version of his argument at the end of the paper however in this rigorous version so many restrictive assumptions are made that public goods become essentially private in the body of the paper i give a series of examples with which i try to convince the reader that one is forced to adopt tiebout s restrictive assumptions the idea is that if one changes any of his assumptions then either equilibria may not exist or may not be pareto optimal my examples are presented in the context of a general class of tiebout models i consider several subclasses one of which is the special case considered by tiebout in each of the subclasses except that considered by tiebout i give a counterexample either to the existence of equilibrium or to its pareto optimality the subclasses are so chosen that the difficulties they reveal would be shared by any reasonable tiebout model which differed from his special case i believe that my examples controvert tiebout s suggestion 39 last paragraph that his theory compares favorably with competitive equilibrium theory most of the examples in this paper have already appeared in the literature i cite related work as i go along what is new here is that i assemble the examples in a unified argument

a characterization of the demand for land abstract in a model of an economy where land is modelled explicitly as heterogeneous subsets of the plane and utility takes an integral form demand can be characterized as a specific map from endowments and prices into subsets of the plane a modified form of the neyman pearson lemma is used to obtain this result the modification being necessary because the analog of randomized tests must be excluded from this model

social welfare and income inequality in a system of cities abstract this paper develops a general equilibrium model of a system of core periphery cities to examine the main determinants of intra and inter regional income disparities the economy is populated by a continuum of homogeneous unskilled and heterogeneous skilled workers unskilled workers whose wages are determined competitively specialize in food production in local cities skilled workers whose wages are determined according to a nash bargain manufacture a high tech commodity in the metropolis we establish conditions under which this core periphery equilibrium spatial configuration emerges we show that both intra and inter regional income disparities are present the determinants of each type of disparity and the social welfare implications are fully investigated our results suggest that public policy programs that improve income equality may not be necessarily welfare enhancing

aggregate uncertainty investment and asymmetric adjustment in the uk manufacturing sector theory suggests that the level of uncertainty facing firms should affect both the rate of adjustment to and the steady state level of investment although there is ambiguity about the sign of the effect a non linear model of investment behaviour incorporating time varying adjustment speeds with threshold effects is estimated for the uk manufacturing sector the most general non linear specification is found to be most congruent with the data uncertainty has a large and significant effect on both levels and rates of adjustment

geology or economics testing models of irreversible investment using north sea oil data this paper tests the main implications of models of irreversible investment using data from operations in the oil fields in the north sea discrete time hazard regression models are used to ascertain the influence of economic variables the expected price of oil the variance of the price of oil and the level of reserves on the lag between the discovery of a field and the decision to develop the field we are able to control for heterogeneity in the data by incorporating variables which account for both the geological features of each field and individual operator characteristics the results indicate that the expected price of oil and the level of reserves are important in influencing the appraisal duration but that the variance of the oil price is not variables capturing the non economic features of the individual fields are also found to be significant factors affecting the appraisal lag copyright 1994 by royal economic society

choosing among alternative discrete investment projects under uncertainty abstract irreversible choice among mutually exclusive projects under output price uncertainty is considered increasing returns are shown to make it optimal to wait for the largest project greater uncertainty of the price process makes it optimal to wait for a larger project

on the continuum approach of spatial and some local public goods or product differentiation models some problems abstract models with a continuum of consumers and locations such that each consumer can purchase goods in only one location are examined such models are common in the literature of the new urban economics an approximation by economies with a finite number of consumers is shown to fail in the first two examples the continuum economy equilibrium exists and is unique but the finite economy has many equilibria example 1 or none at all example 2 in example 3 the continuum economy has no equilibrium but the finite economy has one these three examples employ location dependent utilities the fourth example illustrates the conceptual difficulties that arise in approximation when transportation cost is introduced even with location independent utilities the results are related to the literatures concerning product differentiation and spatial economies

environmental regulation and the export dynamics of energy technologies abstract the pollution haven hypothesis affirms that an open market regime will encourage the flow of low technology polluting industries toward developing countries because of potential comparative advantages related to low environmental standards in contrast the hypothesis suggested by porter and van der linde claims that innovating firms operate in a dynamic competitive situation which allows global diffusion of environmental friendly technologies environmental regulation may represent a relevant mechanism through which technological change is induced in this way countries that are subject to more stringent environmental regulations may become net exporters of environmental technologies this paper provides new evidence on the evolution of export flows of environmental technologies across different countries for the energy sector advanced economies particularly the european union have increasingly focused on the role of energy policies as tools for sustaining the development path the kyoto protocol commitments together with growing import dependence on energy products have brought attention to the analysis of innovation processes in this specific sector the analysis uses a gravity model in order to test the determinants and the transmission channels through which environmental technologies for renewable energies and energy efficiency are exported to advanced and developing countries our results are consistent with the porter and van der linde hypothesis where environmental regulation represents a significant source of comparative advantages what strongly emerges is that the stringency of environmental regulation supplemented by the strength of the national innovation system is a crucial driver of export performance in the field of energy technologies

asymmetry and uncertainty in capital formation an application to oil investment theories of irreversible investment suggest a negative relation between investment and uncertainty and nonlinear adjustment costs open for asymmetries in the adjustment of fixed capital we propose an econometric modelling approach to estimate and test the key predictions of modern investment theory including asymmetric dynamics and various uncertainty indicators our application on a data set from the oil industry offers empirical support for both asymmetric dynamics and uncertainty in oil and gas investment

a determination of bid rents through bidding procedures abstract rent profiles in land markets with finitely many participants are derived under two bidding procedures free unit size bidding and single unit size bidding free unit size bidding is shown to be basically equivalent to an english auction whereas the rent determination problem under single unit size bidding reduces to a mathematical programming problem an application of the latter case is provided in which a density model of land use is shown to be a good approximation of appropriately chosen discrete models

determinants of environmental innovation in us manufacturing industries abstract this paper provides new evidence on the determinants of environmental innovation we employ panel data models to study how environmental innovation by us manufacturing industries responded to changes in pollution abatement expenditures and regulatory enforcement during the period 1983 through 1992 we find that 1 environmental innovation as measured by the number of successful environmental patent applications granted to the industry responded to increases in pollution abatement expenditures however 2 increased monitoring and enforcement activities related to existing regulations did not provide any additional incentive to innovate we also find some empirical evidence that environmental innovation is more likely to occur in industries that are internationally competitive

multi item auctions a collection of items is to be distributed among several bidders and each bidder is to receive at most one item assuming that the bidders place some monetary value on each of the items it has been shown that there is a unique vector of equilibrium prices that is optimal in a suitable sense for the bidders in this paper we describe two dynamic auction mechanisms one achieves this equilibrium and the other approximates it to any desired degree of accuracy

land use and zoning in an urban economy zoning statutes are a nearly ubiquitous phenomenon in urban america allen manvel in his report to the national commission on urban problems p 31 estimated that 90 percent of the cities and towns in the united states with a population of over 5 000 had some kind of zoning statute in 1967 in addition 51 of the 52 largest cities possessed such ordinances in spite of this ubiquity and in spite of the recent public controversy concerning the legality of suburban exclusionary zoning the modern economics literature on the institution is amazingly sparse there have been some significant contributions in recent years notably those by otto davis martin bailey davis and andrew whinston and john crecine davis and robert jackson however i think it is fair to say that economists have barely scratched the surface of what seems to me to be a very complex subject in particular there has been very little progress made in the task of incorporating zoning or land use parameters into the kinds of micro economic models that economists are accustomed to deal with the contrast with another urban economic institution the property taxis rather striking in this respect the basic objective of this paper will be to attempt to fill this gap the first section introduces a simple model of an urban space economy with a manufacturing and residential sector having constructed this model i will show how a change in the allocation of land between the two sectors affects the spatial pattern of land rents the size of the urban labor force and the wage rate the second section of the paper will then be devoted to a discussion of the appropriateness and implications of a land allocation policy which maximizes aggregate land rent

hedonic prices and cost benefit analysis abstract hedonic prices have been used to evaluate the willingness to pay for attributes we reformulate the notion of hedonic price from a composite price on housing to a unit price on traded quantities in conformity with long run competitive equilibrium theory this formulation was suggested but not developed by rosen j polit econ 82 no 1 1974 34 35 by first characterizing an efficient allocation of consumers to space we show that hedonic unit prices can be understood as a bid rent function which supports the efficient allocation this is despite the fact that the lots over which consumers bid are themselves endogenous we show that unit hedonic prices reveal preferences in a manner different from composite hedonic expenditures

estimates of the variance of u s inflation based upon the arch model it is generally agreed that the unpredictability of future inflation is a major component of the welfare loss associated with inflation perfectly predicted inflation might induce some costs through institutional rigidities governmental interference and transaction costs but in the long run these should be rather minimal as these institutions adopt various forms of indexing when inflation is unpredictable risk averse economic agents will incur a loss even if prices and quantities are perfectly flexible in all markets inflation is a measure of the relative price of goods today and goods tomorrow thus uncertainty in tomorrow s price impairs the efficiency of today s allocation decisions friedman in his nobel lecture 8 argues convincingly that higher variability of inflation would lead to decreased output ceteris paribus he then conjectures that higher rates of inflation are generally associated with higher variability of inflation and presumably greater uncertainty about future rates if this is true then higher rates of inflation would also be associated with low levels of output which implies a positively sloped phillips curve this paper uses a new statistical technique arch to estimate the conditional mean and variance of inflation from u s time series data the main finding is that the variance of inflation in the seventies was only slightly greater than in the sixties

is investment time irreversible some empirical evidence for disaggregated uk manufacturing data it has long been suggested that investment may be time irreversible and consideration of the option value of waiting to invest has aroused renewed interest in this issue this study tests for time irreversibility in uk investment according to disaggregation by type of investment expenditure and across manufacturing sector groupings the test results reported indicate that the irreversibility of investment patterns varies not only from industry to industry but also according to the type of capital being purchased with significant time irreversibility detected in gross fixed capital formation and aggregate vehicles expenditure and industrial sector groupings comprising fuels and oil refining engineering and vehicles and textiles and leather however only in the first and last of these series is time irreversibility attributable to non linearities in the underlying data generating process and consistent with threshold effects which may be associated with s s type models of investment dynamics

does privatization improve the environment abstract privatization towards profit maximization lowers output and hence encourages a lower tax rate because of the reduced tax effect output is increased when the demand function is highly convex this gives a paradoxical result that privatization harms the environment

efficient allocations under ambiguity abstract important implications of the expected utility hypothesis and risk aversion are that if agents have the same probability belief then consumption plans in every efficient allocation of resources under uncertainty are comonotone with the aggregate endowment and if their beliefs are concordant then the consumption plans are measurable with respect to the aggregate endowment we study these two properties of efficient allocations for models of preferences that exhibit ambiguity aversion using the concept of conditional beliefs which we introduce in this paper we provide characterizations of such conditional beliefs for the standard models of preferences used in applications

product innovation and the decision to invest in fixed capital assets evidence from an sme survey in six european union member states abstract this work explores the relationship between product innovation and the decision to invest in fixed capital assets among a sample of smes in six european union countries located in both peripheral and more central areas we find that the presence of product innovation reduces the probability to invest a firm s size exerts a direct inverted u shape effect on the probability to invest and an indirect effect through the linear effect of size on the probability to innovate the gap in the probability to invest between innovative and non innovative firms increases with size

electricity prices and public ownership evidence from the eu15 over thirty years abstract this paper studies the impact of corporate ownership on residential net of tax electricity prices when the ownership effect is separated from the liberalisation effect and from other drivers of change after a discussion of a simple conceptual model and of earlier literature we use iea and oecd data for the eu15 over nearly three decades panel econometrics suggests that after controlling for other factors public ownership is associated with lower residential net of tax electricity prices in western europe the impact of liberalisation on prices is smaller and more uncertain

the influence of uncertainty on uk manufacturing investment this paper reports the results of including proxies for growth and inflation uncertainty in an accelerator style investment equation set up in error correction form for u k manufacturing plant and machinery expenditure the uncertainty proxies are constructed as cross section dispersion indices of independent economic forecasts the results confirm the importance of output growth uncertainty as a negative determinant of capital formation inflation uncertainty was found to have a short run influence only copyright 1991 by royal economic society

international aspects of pollution control pollution is a by product of production is only gradually dissolved by the environment and crosses national borders the market outcome ignores the adverse effects of pollution and thus yields higher levels of output and pollution than would prevail under a supranational social planner which does care about pollution in practice governments often do not cooperate and this leads to outcomes of pollution and production in between the market outcomes and the outcomes under supra national social planning absence of precommitment leads to lower emission charges less cleaning up activities and more pollution appropriate levels of emission charges under the various outcomes are a result of this analysis attention is also paid to investment in clean technology the debate between optimists who believe that higher production is compatible with sound environmental policy and pessimists can be analysed in this way