total factor productivity intangible assets and spatial dependence in the european regions dettori b marrocu e and paci r total factor productivity intangible assets and spatial dependence in the european regions regional studies the aim of this paper is to analyse the determinants of the efficiency levels across the european regions firstly a regression based measure of regional total factor productivity is derived by estimating a spatial cobb douglas production function secondly the role played by intangible factors human capital social capital and technological capital on total factor productivity levels is investigated by applying the spatial two stage least squares 2sls method and the spatial heteroskedasticy and correlation consistent shac estimator to account for both heteroskedasticity and spatial autocorrelation it turns out that a large part of total factor productivity differences across the european regions is explained by disparities in the endowments of these intangible assets dettori b marrocu e and paci r

the empirical analysis of the determinants for environmental technological change a research agenda abstract technological change is usually considered a necessary albeit not sufficient condition for a transition to sustainability however the empirical analysis of the determinants to environmental technological change has not received too much attention in the environmental ecological economics literature and many open questions remain in this context based on a careful review of the literature this paper argues that further analysis should address several issues at different levels i e regarding the conceptual framework the thematic scope of the studies some methodological issues and other aspects related to the environmental policy variable first an integrated conceptual framework which takes into account the interplay between relevant variables influencing environmental technological change i e factors internal and external to the firm and characteristics of the environmental technologies and all the stages of this process with a greater emphasis on the invention stage should be developed other aspects should then be tackled including a focus on several themes i e a greater attention to cross sectoral technologies the barriers to different types of environmental technologies the international dimension of environmental technological change and environmental technological change in small and medium size enterprises methodological issues combination of case studies and econometric modelling and several issues related to the environmental policy variable

technical change external economies and the porter hypothesis abstract michael porter introduces the idea that environmental regulations may benefit affected firms this paper derives results consistent with porter s hypothesis by employing a general equilibrium framework with a large number of agents external economies of scale in production and discrete changes in technology the model shows that endogenous technical change makes porter s hypothesis feasible however a policy that produces results consistent with porter s hypothesis is not necessarily optimal

indeterminacy of stationary equilibrium in stochastic overlapping generations models abstract in this paper we consider the local uniqueness properties of stationary rational expectations equilibria ree in a stochastic overlapping generations olg model it is known that in non stochastic olg models steady state equilibria are locally isolated although there may exist indeterminate non stationary perfect foresight equilibria we show by construction that in the stochastic model even stationary equilibrium may be indeterminate we also show that this result is robust in the sense that there exists a non empty open set of economies for which the result is true

do renewable energy technology innovations promote china s green productivity growth fresh evidence from partially linear functional coefficient models abstract renewable energy technology innovation can benefit the environment by promoting green productivity as proposed by existing theoretical studies however recent uneven developments of both environmental performance and renewable energy technology among regions in china remind us to revisit the above theoretical link in this paper we relax the hypothesized homogeneity and linearity in traditional empirical models to investigate the effects of renewable energy technology innovation on china s green productivity the results of the partially linear functional coefficient models show that the effect of renewable energy technological innovation on green productivity is significant only when the relative income level of a province passes a critical turning point beyond the turning point such an effect increases with the growth of relative income levels finally we provide provincial specific policy implications based on the estimated nonparametric relationship between renewable energy technology innovation and green productivity

the changing empirical definition of money some estimates from a model of the demand for money substitutes interest bearing checkable deposits are examined to test whether they should be included in measures of the u s money stock both divisia and traditional simple sum aggregates are constructed on the basis of tests for weak separability in a model of the demand for financial assets using nonparametric demand analysis we find that several groups of assets are compatible with aggregation theory we find empirical support for a narrow measure consisting of the components of current mia in tests based on a st louis equation and in terms of controllability a divisia aggregate performs better than the simple sum mia measure

plant vintage technology and environmental regulation abstract we use data on productivity and pollution abatement costs at individual pulp and paper mills to test whether the impact of environmental regulation on productivity differs by plant vintage and technology plants with higher pollution abatement costs have significantly lower productivity levels this relationship differs greatly based on a plant s technology with productivity at integrated mills being greatly affected by abatement costs while the impact at non integrated mills is negligible plant vintage does not seem to matter with older and newer plants showing similar impacts reported abatement costs appear to substantially understate the true costs of abatement accounting for the impact of technology differences makes some difference in the estimated overall impact of environmental regulation

existence and uniqueness of equilibrium in nonoptimal unbounded infinite horizon economies abstract in applied work in macroeconomics and finance nonoptimal infinite horizon economies are often studied in which the state space is unbounded important examples of such economies are single sector growth models with production externalities valued fiat money monopolistic competition and or distortionary government taxation although sufficient conditions for existence and uniqueness of markovian equilibrium are well known for the compact state space case no similar sufficient conditions exist for unbounded growth this paper provides such a set of sufficient conditions and presents a computational algorithm that will prove asymptotically consistent when computing markovian equilibrium

regulatory attitudes and environmental innovation in a model combining internal and external r d the extent to which environmental regulatory institutions are either green or brown impacts not just the intensity of regulation at any moment but also the incentives for the development of new pollution control technologies we set up a strategic model of r d in which a polluter can deploy technologies developed in house or license technologies developed by specialist outsiders an eco industry polluters exert r d effort and may even develop redundant technologies to improve the terms on which they procure technology from outside we find that while regulatory bias has an ambiguous impact on the best available technology strategic delegation to systematically biased regulators can improve social welfare

innovation complementarity and environmental productivity effects reality or delusion evidence from the eu abstract innovation is a key element behind the achievement of desired environmental and economic performances regarding co2 mitigation strategies would require cuts in emissions of around 80 90 with respect to 1990 by 2050 in the eu we investigate whether complementarity namely integration between the adoption of environmental innovation measures and other technological and organizational innovations is a factor that has supported reduction in co2 emissions per value added that is environmental productivity we merge new eu innovation and wiod data to assess the innovation effects on sector co2 performances at a wide eu level we find that jointly adopting different innovations is not a widespread factor behind increases in environmental productivity nevertheless even though complementarity is not a low hanging fruit a case where innovation complementarity arises is for manufacturing sectors that integrate eco innovations with product innovations one example of this integrated action is a strategy that pursues energy efficiency with product value enhancement we believe that the lack of integrated innovation adoption behind environmental productivity performance is a signal of the current weaknesses economies face in tackling climate change and green economy challenges incremental rather than more radical strategies have predominated so far the latter have been confined to industrial niches in terms of the number of involved firms this is probably insufficient when we look at long term economic and environmental goals

environmental policy with endogenous plant locations in a game between the governments of two countries each chooses its own environmental policy the nash equilibria of the game are generally not pareto optimal on the one hand each country may want to attract industry giving it an incentive to choose low environmental taxes or standards on the other hand if disutility from pollution is sufficiently high each country might prefer that a firm locates only in other countries this effect tends to make the environmental policy under non cooperation stricter than it would be with cooperation

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

co2 emissions and intersectoral linkages the case of spain this paper proposes a methodology to identify the most relevant productive transactions in terms of co2 emissions in the most polluting sectors of an economy and applies this methodology to the spanish case emissions can be related to the co2 emissions intensity of sectors co2 intensity factor to the size of the economy s flows scale factor to the input output productive relationships within an economy technology production factor and to the structure of final demand of different sectors demand factor a formal analysis of these factors is carried out by means of an input output framework combined with a sensitivity analysis by considering key sectors and relevant transactions in terms of co2 emissions the most effective policy measures aimed at reducing co2 emissions can be identified

linking namea and input output for consumption vs production perspective analyses evidence on emission efficiency and aggregation biases using the italian and spanish environmental accounts we integrate input output and namea tables for spain and italy in 1995 2000 and 2005 in order to address the hot policy issue of sustainable consumption and production a comparison of production and consumption perspectives may have relevant policy implications we deal with the domestic technology assumption and primarily the aggregation bias that may result when calculating indirect emission using different sector aggregations in the analyses e g 16 30 50 extended input output analysis provides analyses of the emissions embodied in domestic consumption and domestic production by considering the structure of intermediate inputs and environmental efficiency in each production sector our empirical findings show that different sectoral aggregation significantly biases the amount of emissions for the consumption perspective though differently in the two countries italy surprisingly show consumption production ratios around or lower than one but in line with some major work at eu level our results thus suggest that special attention must be paid when interpreting the ee ioa of country estimated amounts of embodied emissions both in domestic final demand and those directly associated with the production sectors when the sectoral aggregation level has a low definition as considered in some recent similar studies

regional green development level and its spatial relationship under the constraints of haze in china abstract this paper includes the new constraints of haze in the environmental efficiency research framework and the sbm undesirable and malmquist exponential models are used to measure and analyse the evolution characteristics and regional differences of regional green environmental efficiency of china and applied china s regional panel data and a spatial dubin model to deeply explore the impact of environmental regulation openness urbanisation industrial structure and technological innovation on regional green environmental efficiency the result show that under the constraints of smog the regional green environment efficiency of china is different with each area and shows strong spatial dependence and spatial differentiation the overall spatial distribution of the east middle northeast west gradient is decreasing environmental regulation had a major impact on the green environment efficiency of the region and demonstrated an inverted n type relationship the degree of openness urbanisation industrial structure and technological innovation play an active role in promoting regional green sustainable development economic growth corporate ownership structure fiscal policy and foreign investment dependence have hindered the progress of regional green sustainable development to a certain extent

a note on the effects of capital income taxation on the dynamics of a competitive economy abstract in this paper we investigate the effect of changing capital income tax rates on the time paths of a competitive economy in an uncertain environment

uniqueness of an equilibrium in infinite horizon economies subject to taxes and externalities abstract this paper verifies the uniqueness of an equilibrium for a class of stochastic infinite horizon economies with capital that are subject to distortionary taxes or externalities the proof develops the property of concavity for a nonlinear monotone operator whose fixed points correspond to equilibria as the underlying monotone operator has been useful for establishing the existence of an equilibrium and for computing an equilibrium this approach also brings under one roof the study of existence uniqueness and approximation of an equilibrium in distorted economies journal of economic literature classification numbers c60 h20

environmental regulations and productivity growth the case of fossil fueled electric power generation this paper measures and analyzes the effect of sulfur dioxide emission restrictions on the rate of productivity growth in the electric power industry over the 1973 79 business cycle a firm specific measure of regulatory intensity is developed which depends on the severity of the emission standard the extent of enforcement and the unconstrained emission rate relevant to each utility the results indicate that emission regulations result in significantly higher generating costs primarily from the increased use of low sulfur fuels the average rate of productivity growth was reduced by 0 59 percentage points per year for constrained utilities

a comparison of nonparametric tests of weak separability for annual and quarterly data on consumption leisure and money among the most fundamental assumptions made in economics are utility maximization and the separability of the arguments in the representative consumer s utility function these assumptions are important for theoretical and empirical applications of economics in this article we present results from nonparametric tests of these assumptions of consumer behavior we find that utility maximization generally obtains with either annual or quarterly per capita data on consumption goods leisure and relatively liquid monetary assets annual data on consumption goods leisure and all monetary assets are consistent with utility maximization there is some evidence in support of using partial adjustment models when estimating quarterly data models of the demand for monetary assets further annual data on consumption goods and leisure and on liquid monetary assets meet the necessary and sufficient conditions for weak separability these results support the notion of a monetary aggregate more broadly based than cu

environmental innovation and environmental performance abstract by estimating a simultaneous panel data model of environmental innovation and toxic air pollution this paper identifies bi directional causal links between the two we study a panel of 127 manufacturing industries over the period 1989 2004 pollutant emissions are an implicit measure of policy stringency and environmental patent counts are used to measure environmental innovation after accounting for the joint endogeneity we find that environmental innovation is an important driver of reductions in us toxic emissions conversely we find that tightened pollution targets induce environmental innovation however our estimates indicate that the environmental policy multiplier the proportionate contribution of induced innovation to long run emission reduction is small

how technological innovations affect urban eco efficiency in china a prefecture level panel data analysis abstract this paper utilizes sbm undesirable model and malmquist index to examine the urban eco efficiency in china and analyzes the regional heterogeneity through the panel data of 273 prefecture level cities during 2007 2017 in china the spatial durbin model is used to examine the influencing factors of urban eco efficiency associated with technological innovations the results show that the average values of urban eco efficiency of the east central and west regions are 0 93 0 88 and 0 90 respectively the moran s i of eco efficiency is around 0 8 which shows a strong spatial heterogeneity it is found that higher innovative ability can increase urban eco efficiency education investment and innovation talents have a u shape relationship with urban eco efficiency while capital investment and innovation performance have an inverted u shape relationship with it this research outlines the relationship between technological innovations and urban eco efficiency offering policy implications for china s eco construction and sustainable urban development

environmental performance innovation and spillovers evidence from a regional namea abstract the achievement of positive environmental performance ep at national level could strongly depend on differences in regional features namely productive specialization regulation stringency and innovation capabilities of both public institutions and the private business sector we present empirical evidence for a newly released namea available for the 20 italian regions in order to demonstrate the role played by sector innovation regional spillovers and environmental policies the italian north south divide regarding industrial development and productive specialization patterns seems to affect regional ep nonetheless such a pattern presents some interesting differences revealing a more heterogeneous distribution of emissions which may reflect the role of other driving forces in particular agglomerative effects seem to play a major role and the ep of neighboring regions influences the regional internal ep this means that together with the spatial concentration of specific sectors into restricted areas there is also some convergence in the adoption of cleaner or dirtier production process techniques finally interregional technological spillovers are more important than sector internal innovation for improving ep revealing that accounting for spatial features and linking ecological economics to regional economics are crucial in understanding the key drivers of ep

sectoral patterns of technical change towards a taxonomy and a theory abstract the purpose of the paper is to describe and explain sectoral patterns of technical change as revealed by data on about 2000 significant innovations in britain since 1945 most technological knowledge turns out not to be information that is generally applicable and easily reproducible but specific to firms and applications cumulative in development and varied amongst sectors in source and direction innovating firms principally in electronics and chemicals are relatively big and they develop innovations over a wide range of specific product groups within their principal sector but relatively few outside firms principally in mechanical and instrument engineering are relatively small and specialised and they exist in symbiosis with large firms in scale intensive sectors like metal manufacture and vehicles who make a significant contribution to their own process technology in textile firms on the other hand most process innovations come from suppliers these characteristics and variations can be classified in a three part taxonomy based on firms 1 supplier dominated 2 production intensive 3 science based they can be explained by sources of technology requirements of users and possibilities for appropriation this explanation has implications for our understanding of the sources and directions of technical change firms diversification behaviour the dynamic relationship between technology and industrial structure and the formation of technological skills and advantages at the level of the firm the region and the country

how environmental regulations affect innovation in the australian oil and gas industry going beyond the porter hypothesis the impact of environmental regulation on innovation is of central interest to many industries and policy makers alike while traditional research adopts a top down view of regulation and attempts to measure the innovation response the more bottom up view of contemporary theory argues that firms produce innovations that exceed compliance levels as a competitive strategy we approach this dichotomy by investigating innovation introduced by australian oil and gas firms in light of environmental regulatory compliance burden and firm level characteristics including competitive capabilities analyses of survey responses executive level interviews and conference proceedings reveal both regulatory top down and competitive advantage bottom up perspectives explain innovation in this industry regression analyses reveal that product service and novel innovations all types are related to a high compliance burden competitive skills research and development activity and engagement in formal collaborations interview and conference data add nuance to our findings revealing collaborative compliance frameworks result in similar innovation outcomes

environmental policy and competitiveness the porter hypothesis and the composition of capital abstract the porter hypothesis suggests a win win situation in the sense that environmental policy improves both environment and competitiveness the suggestion received strong criticism from economists driven by the idea that if opportunities exist firms do not have to be triggered by an extra cost in this paper a model is developed which confirms this point but which also draws attention to some general mechanisms that relax the trade off considerably downsizing and modernization of firms subject to environmental policy will increase average productivity and will have positive effects on the marginal decrease of profits and environmental damage

equilibria in distorted infinite horizon economies with capital and labor abstract this paper studies a broad class of infinite horizon economies that are subject to externalities taxes or other distortions these economies are formulated in discrete time are subject to uncertainty and consist of households that accumulate capital and elastically supply labor for this class of economies methods are developed for proving the existence of an equilibrium for characterizing an equilibrium and for verifying at a computational level that an equilibrium is unique some applications of these methods to real and monetary economies are discussed journal of economic literature classification numbers c6 e6

toward a new conception of the environment competitiveness relationship accepting a fixed trade off between environmental regulation and competitiveness unnecessarily raises costs and slows down environmental progress studies finding high environmental compliance costs have traditionally focused on static cost impacts ignoring any offsetting productivity benefits from innovation they typically overestimated compliance costs neglected innovation offsets and disregarded the affected industry s initial competitiveness rather than simply adding to cost properly crafted environmental standards can trigger innovation offsets allowing companies to improve their resource productivity shifting the debate from pollution control to pollution prevention was a step forward it is now necessary to make the next step and focus on resource productivity

green efficiency and environmental subsidy evidence from thermal power firms in china abstract to achieve green development ample environmental subsidies have been invested into many energy intensive firms such as thermal power firms in china investigations of the effects of this kind of subsidy can help to provide specific and important implications for ongoing regulations unlike previous studies on the national regional or sectoral level this paper measures green efficiency and its compositions of thermal power firms and studies the impact of environmental subsidies on green efficiency by using the classical slacks based measure and tobit model the results show that the average green efficiency ranges from 0 509 to 0 663 during 2010 2015 which is much lower than the general efficiency the green scale efficiency is the main reason for the low green efficiency thus indicating large room for improvement environmental subsidies negatively affect green efficiency and its decompositions from 2010 to 2013 the negative effect becomes weak and insignificant in 2014 and the environmental subsidies start to significantly promote green efficiency and its decompositions in 2015 according to our findings some implications relating to improving green scale efficiency increasing the intensity of environmental subsidies to firms and strengthening their supervision are proposed

non parametric tests of consumer behaviour the neoclassical model of consumer behaviour postulates that a consumer s choice behaviour can be described as deriving from utility maximization subject to a budget constraint one is then naturally led to ask what this model implies about observed behaviour this question has been addressed from two quite distinct approaches the first approach originating in the work of slutsky 1915 and antonelli 1886 derives necessary and sufficient conditions involving the derivatives of the demand functions the second approach originating in the work of samuelson 1938 1947 1948 derives algebraic conditions on the demand functions implied by maximizing behaviour

existence and uniqueness of equilibrium in distorted dynamic economies with capital and labor abstract in this paper we provide a set of sufficient conditions under which recursive competitive equilibrium exists and is unique for a large class of distorted dynamic equilibrium models with capital and elastic labor supply we develop a lattice based approach to the problem the class of economies for which we are able to obtain our existence and uniqueness result is considerably larger than those considered in previous work we conclude by applying the new results to some important examples of monetary economies often used in applied work journal of economic literature classification numbers c62 d51 d90 e10

embedding the drivers of emission efficiency at regional level analyses of namea data abstract this paper provides new empirical evidence on regional national disparities in environmental efficiency based on analyses of namea data referring to italy and the lazio region where rome is the main city shift share analyses provide evidence on the drivers of environmental efficiency and on sector specificity our evidence shows that although the region around rome has achieved higher environmental performance compared to italy mainly thank to its being less industry based some critical points in the energy sector and in some services should be taken into account in shaping the future development of the region in addition the use of regional namea for econometric investigations of emission efficiency drivers at national level shows that though north south disparities favour northern and richer regions in accordance with development oriented dynamics environmental hot spots driven by specialisation and efficiency related issues also appear in some northern industrial regions further the role of public ad private r d is of main relevance in enhancing emission on economic value ratios environmental industrial and sector oriented policy making may derive valuable information from the evidence provided by our study that highlights how analytical exploitation of namea offers rich array of insights for regional policy making

exploring links between innovation and diffusion adoption of nox control technologies at us coal fired power plants while many studies have looked at innovation and adoption of technologies separately the two processes are linked advances and expected advances in a single technology should affect both its adoption rate and the adoption of alternative technologies this paper combines plant level data on us coal fired electric power plants with patent data pertaining to nox pollution control techniques to study this link as in other studies of environmental technologies the effect of other explanatory variables is dominated by the effect of environmental regulations demonstrating that the mere presence of environmental technologies is not enough to encourage its usage nonetheless i do find that technological advances are important for the adoption of existing combustion modification technologies however these advances are less important for the adoption of newer post combustion control techniques which are adopted only when needed to comply with the strictest emission limits

dynamic incentives of environmental regulations the effects of alternative policy instruments on technology diffusion abstract we develop a framework for comparing empirically the effects of alternative environmental policy instruments on the diffusion of new technology market based and command and control approaches can he quantitatively compared by estimating the economic penalty that firms through their actions reveal to be associated with violation of standards in the context of concerns about global climate change we empirically examine the likely effects of pigouvian taxes technology adoption subsidies and technology standards we employ state level data on the diffusion of thermal insulation in new home construction comparing the effects of energy prices insulation cost and building codes

bounding an economic monetary aggregate under nonhomothetic preferences we construct nonparametric bounds on true quantity indexes for the realistic case of nonhomothetic preferences these bounds do not require assumptions about the form of the underlying aggregator function we construct these bounds using monetary assets that meet necessary conditions for the existence of an aggregate we find that a tornqvist index of these monetary assets falls within the nonparametric bounds on true quantity indexes almost all of the time whereas a simple sum of these monetary assets falls outside these bounds more than one third of the time

environmental policy stringency and technological innovation evidence from survey data and patent counts this article uses patent data to examine the impact of public environmental policy on innovations in environment related technology the analysis is conducted using data on an unbalanced panel of 77 countries between 2001 and 2007 drawing upon data obtained from the european patent office epo world patent statistical patstat database and the world economic forum s wef executive opinion survey the results support our hypotheses concerning the positive role of both general innovative capacity and environmental policy stringency on environment related innovation a subsequent two stage model assesses the factors which drive innovation in general and uses the fitted values to estimate environmental innovation while the analysis is conducted on a smaller sample they confirm the findings of the reduced form model

indeterminacy and increasing returns abstract we investigate properties of the one sector growth model with increasing returns under two organizational structures capable of reconciling the existence of aggregate increasing returns with competitive behavior by firms the first involves input externalities the second involves monopolistic competition we show for parameters in close accord with recent literature on real business cycles that the model displays an indeterminate steady state that can be exploited to generate a model of business fluctuations driven by self fulfilling beliefs in our first class of models growth is generated by exogenous increases in factor productivity in the second class the marginal product of capital is large enough for endogenous growth journal of economic literature classification numbers e00 e3 o40

comparative statics and perfect foresight in infinite horizon economies does a pure exchange economy with an infinite time horizon have determinate perfect foresight equilibria when there is a finite number of infinitely lived agents equilibria are generically determinate this is not true with overlapping generations of finitely lived agents we ask whether the initial conditions together with the requirement of convergence to a steady state locally determine an equilibrium price path in this framework there are many economies with isolated equilibria many with continua of equilibria and many with no equilibria at all with two or more goods in every period not only can the price level be indeterminate but relative prices as well furthermore such indeterminacy can occur whether or not there is fiat money and whether or not the equilibria are pareto efficient this paper considers whether infinite horizon economies have determinate perfect foresight equilibria this question is of crucial importance if instead equilibria are locally indeterminate not only are we unable to make comparative static predictions but the agents in the model are unable to determine the consequences of unanticipated shocks the idea underlying perfect foresight is that agents expectations should be the actual future sequence predicted by the model if the model does not make determinate predictions the concept of perfect foresight is meaningless we consider two extreme cases the first with a finite number of infinitely lived consumers and the second with an infinite number of finitely lived consumers an overlapping generations model both are models of stationary pure exchange economies no production including the storage of goods between periods can occur these models are unrealistic but are the easiest to study extensions of the results of this paper to models with production infinitely lived assets and mixtures of the two types of consumers are presented by muller and woodford 29 when there is a finite number of infinitely lived consumers we argue that equilibria are generically determinate this is because the effective number of equations determining equilibria is not infinite but equal to the number of agents minus one and must determine the marginal utility of income for all but one agent generically near an equilibrium these equations are independent and exactly determine the unknowns when there are infinitely many overlapping generations this reasoning breaks down an infinite number of equations is not necessarily sufficient to determine

on the existence of nonoptimal equilibria in dynamic stochastic economies abstract the question of the existence of the stationary equilibrium for distorted versions of the standard neo classical growth model is addressed in this paper the conditions presented guaranteeing the existence of nontrivial equilibrium for the class of economies under study are simple and intuitively appealing while the existence proof developed is elementary examples are given illustrating that economies with distortional taxation endogenous growth with externalities and monopolistic competition can all fit into the framework provided journal of economic literature classification numbers c62 e30 e60

productivity growth and environmental regulation in mexican and u s food manufacturing many argued during the nafta debate that trade liberalization would favor mexican over u s food processors especially because of lax environmental laws south of the border we find through an examination of profit functions that productivity growth in mexico has outstripped that in the united states suggesting free trade indeed will benefit mexican suppliers u s pollution regulations have had no impact on the profitability or productivity of u s food manufacturing in contrast mexico s swiftly rising environmental standards have enhanced food processors productivity growth corroborating the porter hypothesis pollution law therefore has favored mexican over u s food processing but for reasons few had anticipated

environmental innovations and profitability how does it pay to be green an empirical analysis on the german innovation survey much of the empirical literature analysing the relation between environmental innovation and competitiveness has focused on the question whether it pays to be green we differentiate between different types of environmental innovations which will be disentangled in those aiming at reducing the negative externalities and those allowing for efficiency increases and cost savings what we analyze is at first the extent to which these two typologies have impacts on firms profitability with opposite signs and secondly whether the motivations driving the adoption of those innovations make the difference in terms of economic gains we find empirical evidence that both the typology of environmental innovation and the driver of their adoption affect the sign of the relationship between competitiveness and environmental performance the empirical strategy is based on a sample of german firms and makes use of a merge of two waves of the mannheim innovation panel in 2011 and 2009 that allow overcoming some endogeneity issues which may arise in a cross section setting

are there increasing returns to pollution abatement empirical analytics of the environmental kuznets curve in pesticides abstract according to the environmental kuznets curve ekc hypothesis economic growth and the reduction of environmental degradation are compatible goals an inverted u shaped relationship between economic performance and environmental pollution suggests that empirically an economy is associated with smaller levels of pollution after some threshold income point one potential explanation for the empirical evidence of an ekc is increasing returns to pollution abatement where the abatement efficiency rises with an increase in the scale of abatement doubling the clean up efforts more than doubles the abatement of pollution as this efficiency gain makes abatement less expensive pollution might fall as more abatement is undertaken this study tests the hypothesis that there are increasing returns to abating pollution empirical evidence on environmental risks in the us agricultural sector since 1970 support the existence of increasing returns in addition i estimate the productivity of pollution abatement using refined empirical productivity measurement methods and explicitly control the level of technology the results show the importance of including an environmental productivity variable in the ekc framework

a non parametric analysis of personal sector decisions on consumption liquid assets and leisure this paper uses the non parametric techniques developed by varian i982 i983 and afriat i967 1973 from the theory of revealed preference see samuelson 1947 to address a number of questions of interest to those who model the determination of consumption liquid assets and leisure hours 1 the primary assumption underlying much work in this area whether it deals with highly aggregated categories such as the consumption of non durables or relatively disaggregated categories such as the consumption of energy products or food is that demand functions for consumer goods are consistent with the hypothesis that they are derived from the maximisation of a well behaved utility function subject to a relevant budget constraint the absence of liquid assets or leisure from such studies involves the implicit assumption of weak separability between consumption goods and these other goods the parametric approach then assumes a particular functional form for either the utility function indirect utility function or cost function and estimates the parameters that best describe the data however as varian i983 points out when it comes to testing hypotheses in such a framework it is always a joint hypothesis comprising both the restrictions and the choice of functional form which is being tested 2 to avoid this problem varian developed the nonparametric revealed preference approach to provide algebraic conditions which are imposed by maximising behaviour on a set of data with a finite number of observations this non parametric approach is exploited here in several ways there have been a number of studies using a parametric approach at a fairly disaggregated level to the determinants of consumers expenditure see for example deaton i974 anderson and blundell i982 and ray i984 for applications using

dynamic environmental performance analysis a malmquist index approach abstract this article presents a general framework for dynamic environmental performance analysis by generalizing the approach proposed by kuosmanen and kortelainen kuosmanen t kortelainen m 2005 measuring eco efficiency of production with data envelopment analysis journal of industrial ecology 9 4 59 72 from a static to a dynamic setting for this purpose we construct an environmental performance index epi by applying frontier efficiency techniques and a malmquist index approach compared to other dynamic environmental productivity and efficiency analysis approaches based on these methods our approach builds on the standard definition of eco efficiency as it is presented in the ecological economics literature recognizing the importance to analyze the sources of environmental performance changes we show how changes in overall environmental performance can be decomposed into changes in relative eco efficiency and shifts in environmental technology respectively we apply the presented technique at the macro level to dynamic environmental performance analysis of 20 member states of the european union in 1990 2003 according to the results environmental technical change mostly explains the improvement in overall environmental performance while relative eco efficiency change has been minor for most countries during the sample period

environmental policy design innovation and efficiency gains in electricity generation this paper explores the relationship between environmental regulation innovation and competitiveness drawing upon a unique dataset on environmental regulations directed at combustion plants a global dataset of power plants and a global dataset of environmental patents the analysis is conducted in two stages first a nonparametric frontier analysis is implemented to estimate efficiency scores including a measure of technological innovation based on patent stocks second econometric methods are applied to analyse the role of policy stringency and policy design on efficiency our estimation sample covers thermal power plant sectors in 20 countries from 1990 to 2009 the results show that the stringency of environmental regulations is a significant determinant of productive efficiency with respect to pollutant emissions as well as fuel use however these effects turn negative once the level of stringency leaps over a certain threshold in addition the paper concludes that the positive effect of regulatory stringency can be diminished by a negative effect of regulatory differentiation with measures which are differentiated across plant size and age having negative consequences and these effects are increasing over time this finding is important given the prevalence of size and vintage differentiated policies in many countries finally it is found that integrated approaches to environmental innovation are more likely to bring about efficiency improvements than end of pipe technologies

development and utilization of energy related technologies economic performance and the role of policy instruments the present study investigates the effects of energy related technologies on economic performance at firm level we distinguish clearly between adoption and use of energy related technologies process innovation in the broad sense and product innovation in energy related fields we take into consideration four energy related policy instruments and expected demand for energy related new products and services we investigate the possibility of indirect effects of policy on performance via adoption or innovation by interacting adoption and innovation variables with policy instrument dummies we test our hypotheses not only for the pooled data but also separately for the three countries austria germany switzerland that are taken into consideration in this study we find a positive direct effect of investment expenditures for energy related technologies on labour productivity that measure intensity of adoption of energy related technologies and a positive indirect effect of energy taxes via investment in energy related technologies further we find positive direct and indirect effects of regulation standards and voluntary agreements via the adoption of production related technologies and for technologies for the generation of renewal energy sources we find neither direct nor indirect effects of the sales of innovative energy related products that measure product innovation in energy related products on labour productivity no differences among the three countries could be detected with respect to investment in energy related technologies and sales of innovative energy related products the indirect effects of regulation and standards and voluntary agreements can be primarily traced back to german firms

environmental efficiency and labour productivity trade off or joint dynamics a theoretical investigation and empirical evidence from italy using namea in this paper we test an adapted ekc hypothesis to verify the relationship between environmental efficiency namely emissions per unit of value added and labour productivity value added per employee we exploit namea data on italy for 29 sector branches and 6 categories of air emissions for the period 1991 2001 we employ data on capital stock and trade openness to test the robustness of our results on the basis of the theoretical and empirical analyses focusing on innovation firm performances and environmental externalities we would expect a positive correlation between environmental efficiency and labour productivity a negative correlation between the emissions intensity of value added and labour productivity which departs from the conventional mainstream view the hypothesis tested is a critical one within the longstanding debate on the potential trade off or complementarity between environmental preservation and economic performance which is strictly associated with the role of technological innovation we find that for most air emission categories there is a positive relationship between labour productivity and environmental efficiency labour productivity dynamics then seem to be complementary to a decreasing emissions intensity in the production process taking a disaggregate sector perspective we show that the macro aggregate evidence is driven by sector dynamics in a non homogenous way across pollutants services tend always to show a complementary relationship while industry seems to be associated with inverted u shape dynamics for greenhouse gases and nitrogen oxides this is in line with our expectations in any case ekc shapes appear to drive such productivity links towards complementarity the extent to which this evidence derives from endogenous market forces industrial and structural change and policy effects is discussed by taking an evolutionary perspective to innovation and by referring to impure public goods arguments

environmental innovations in services manufacturing services integration and policy transmissions abstract this paper investigates the relevant factors behind the almost unexplored realm of environmental innovation in services using a dataset of 8161 italian service firms specifically we test whether manufacturing services integration matters for environmental innovations in addition taking account for the heterogeneity of the service industries we analyse whether environmental policies for manufacturing transmit induced innovation effects to services our findings show that i the drivers of environmental innovations related to carbon abatement and energy efficiency differ across industries and ii cooperation training environmental management systems and public funding play key roles in these processes the integration of services and manufacturing through push and pull effects and the environmental policy transmission effect from manufacturing to services generally do not seem to have a positive impact on the diffusion of environmental innovations

the effect of within sector upstream and downstream energy taxes on innovation and productivity the aim of this paper is to investigate the effect of environmental regulatory stringency on innovation and productivity using a panel of 8 european countries for 13 manufacturing sectors over the years 2001 2007 this research topic falls under the heading of the porter hypothesis ph of which different versions have been tested we consider both the strong and the weak versions of the ph while also adding some peculiar features to the analysis firstly we assess the role played by environmental taxes that is an instrument rarely tested as a factor which can support the ph secondly we analyse not only the effect of environmental taxes within a given sector within sector but also the role played by environmental taxes in upstream and downstream sectors in terms of input output relationships thirdly we test these relationships also indirectly by verifying whether innovation is one of the channels through which higher sectoral productivity can be achieved by imposing tighter environmental regulations our main findings suggest that downstream stringency is the most relevant driver of innovation and productivity while within sector regulations only affect productivity but not innovation moreover the effect of regulations on productivity is mostly direct while the part of the effect mediated by induced innovations as measured by patents is relevant only for what concerns downstream regulations

induced innovation and energy prices this paper uses u s patent data from 1970 to 1994 to study the impact of energy prices on energy efficient innovations theories of technological change have focused both on demand side factors which spur innovative activity by increasing the value of new innovations and supply side factors such as scientific advancements that make new innovations possible data on demand side factors are easily obtained but data on supply side factors that influence innovation are not readily available this paper uses patent citations as a measure of the usefulness of the existing base of scientific knowledge citations to previous patents are used to construct productivity estimates which measure the usefulness of the existing stock of knowledge to inventors in a given energy field for any given year these estimates are then combined with data on demand side factors to estimate a model of induced innovation in energy technologies the results indicate that both energy prices and the supply of knowledge have strongly significant positive effects on innovation the paper concludes with a discussion of the implication of this work for environmental policy

the optimal level of monetary aggregation in this paper i have three objectives 1 to describe the aggregation theoretic procedure for selecting the optimal monetary aggregates 2 to survey the available empirical evidence for information on the optimal aggregates and 3 to describe the procedures that should be followed to complete a redefinition of the monetary aggregates although all of the federal reserve board s current official aggregates are rejected as targets some newer aggregates are found to be substantially preferable to the official aggregates the board s staff recently completed the official redefinition of its monetary aggregates in a manner largely unrelated to aggregation and index number theory my own research in recent years has sought to remedy that shortcoming except for monetary aggregates most of the data provided by governmental agencies are constructed in accordance with aggregation and index number theory since aggregation theory can be applied to monetary aggregation 1 i constructed new monetary aggregates that are consistent with the economic theory 2 recently the empiri

dynamic externalities multiple equilibria and growth abstract i consider an olg model with production and a single commodity i show that in such an environment unbounded growth of income per capita is not possible if the aggregate technology is of the constant returns to scale type i introduce an external effect in the aggregate production function and derive conditions under which persistent growth is an equilibrium outcome the introduction of an external effect also creates poverty traps and open sets of initial conditions for which there exists an infinite multiplicity of equilibria when such a multiplicity exists equilibria with the same initial position will display different asymptotic behaviors finally i show that by introducing appropriate tax schemes a unique equilibrium path can be selected

upstream and downstream pollution taxations in vertically related markets with imperfect competition when two markets are vertically related the government can control pollution at the upstream as well as the downstream market levels this paper employs the stylized model of input price discrimination and compares the effectiveness of upstream and downstream pollution taxations we consider the situation in which downstream firms have heterogeneous abatement technologies and an upstream monopolist performs input price discrimination against them in order to mitigate pollution the government imposes input tax on the intermediate inputs and emission tax on the pollutant we show that the degree of input price discrimination decreases with a rise in the input tax and increases with a rise in the emission tax we further examine the effect of a green tax reform in which the government changes the source of taxation from input tax to emission tax we argue that although this green tax reform may reduce the tax revenue of the government it will certainly increase social welfare

capital income taxation and perfect foresight abstract this paper develops a perfect foresight model of capital income taxation in a representative household neoclassical one sector framework the household sector is based on intertemporal utility maximization the main result is the equivalence of a perfect foresight solution and an artificial central planning solution if there is no tax this is the equivalence of a market equilibrium and social optinum the equivalence result is used to deduce the implications of a partial tax reform policy it is shown that a partial reform increases capital at each time following the initial period of the program

growth externalities and sunspots abstract in this paper we consider a simple model of neo classical capital accumulation with production externalities in which a continuum of identical infinitely lived agents produce output from a standard stationary neo classical production technology and choose their actions to maximize a discounted sum of single period utilities because of the presence of the externality in production the model exhibits sunspot equilibria

equilibrium in a production economy with an income tax this paper develops a method to study an infinite horizon production economy distorted by a state dependent income tax this setting permits taxes to depend on the capital stock an endogenous state variable and thus captures situations where the evolution for capital and taxes is jointly determined to solve this model the consumption function is represented as a fixed point of a nonlinear monotone operator that is defined such that its nth iteration computes the consumption function n steps away from the horizon for a corresponding finite horizon economy the oparator s monotonicity is exploited in proving the existence of and constructing an equilibrium copyright 1991 by the econometric society

heterogeneous impacts of regulatory policy stringency on the eu electricity industry a bayesian shrinkage dynamic analysis abstract environmental and technical efficiency in the electricity sector is a major focus of regulatory policies aimed at hastening greenhouse gas reduction and lowering energy prices for final consumers understanding the impact of market and environmental regulations on efficiency is crucial for the design and choice of policy packages at the national level the productivity response to regulations depends on unobserved country specific factors that current empirical analyses have not modelled in this framework we analyse the regulation effects on efficiency in the electricity sector for a panel of european union countries we explicitly consider the effects of the environmental regulation along with the market regulation our estimation strategy uses the bayesian shrinkage estimator which can deal with the bias aggregation problem and cross country heterogeneity it allows us to identify the different transmission channels through which regulatory policy is implemented the results highlight divergent behaviours at the country level the direct impacts of the market and environmental regulatory policies on productivity are negative around 2 7 and 2 3 respectively but the countries vary in the degree to which they are able to compensate these negative effects

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

nonparametric tests of utility maximization and weak separability for consumption leisure and money some of the most fundamental assumptions of economics are utility maximization and weak separability of the arguments in the represen tative consumer s utility function this paper contains results from nonparametric tests of these assumptions about consumer behavior the authors find that quarterly per capita data on consumption goods le isure and monetary assets are consistent with utility maximization further consumption goods and leisure meet necessary and sufficient conditions for weak separability additionally one grouping of relat ively liquid monetary assets meets the necessary conditions for weak separability they also test and find no evidence of homothetic prefe rences copyright 1987 by mit press

an intertemporal approach to measuring environmental performance with directional distance functions greenhouse gas emissions in the european union abstract the impact of economic activity on the environment is a matter of growing concern for firm managers policymakers researchers and society as a whole building on previous work by kortelainen 2008 dynamic environmental performance analysis a malmquist index approach ecological economics 64 701 715 we contribute an approach to assessing intertemporal environmental performance at the level of the management of specific pollutants as the result of change in eco efficiency and environmental technical change which identify catching up with best available environmental practices and eco innovation respectively in doing so we use data envelopment analysis techniques directional distance functions and luenberger productivity indicators our approach is employed to assess environmental performance in the emission of greenhouse gases in the european union 28 over the period 1990 2011 the main result is that environmental performance has been boosted by environmental technical change rather than by increases in eco efficiency although with certain differences among air pollutants accordingly policy measures aimed at enhancing eco efficiency are recommended to improve environmental performance in european countries regarding greenhouse gas emissions

technology diffusion with market power in the upstream industry this paper compares taxes and tradable permits when used to regulate a competitive and polluting downstream industry that can purchase an abatement technology from a monopolistic upstream industry second best policies are derived for the full range of the abatement technology s emission intensities and marginal abatement costs the second best permit quantity can be both above or below the socially optimal emission level explicit consideration of the output market provides further insights on how market power distorts the allocation in the downstream industry the ranking between permits and taxes is ambiguous in general but taxes weakly dominate permits if full diffusion is socially optimal in addition it is analysed how a cap on the permit price affects the diffusion of an abatement technology

green technologies and environmental productivity a cross sectoral analysis of direct and indirect effects in italian regions abstract this paper provides empirical investigation of the effects of environmental innovations eis on environmental performances as proxied by the environmental productivity ep measure we focus on sectoral environmental productivity of italian regions by exploiting the regional accounting matrix including environmental accounts regional namea patent applications have been extracted by the patstat database and assigned to the environmental domain by adopting different international classifications of green technologies the latest release of the oecd env tech indicators and the union of this with the previously established wipo green inventory econometric results outline that regions sectors characterized by higher levels of green technologies gts are those facing better environmental performance these positive effects directly stem from the introduction of gt in the same sector as well as from the introduction of gt in vertically related sectors

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

do eco innovations harm productivity growth through crowding out results of an extended cdm model for italy abstract this paper discusses the results for italy of a cdm model crepon et al 1998 further extended with the objective of evaluating drivers and productivity effects of environmental innovations the particular nature of environmental innovations especially as regards the need of government intervention to create market opportunities is likely to affect the way through which they are pursued innovation equation within the cdm model and their effect on productivity productivity equation the contribution of the paper is manifold first the drivers of environmental innovations measured with environmental patents are investigated by using mainly administrative data instead of survey data second i investigate the extent to which firms with big polluting plants tend to bias their innovation strategies towards environmental technologies third the return of environmental innovations is compared to the one of other innovations to indirectly assess the presence of a crowding out effect of environmental innovations at the expenses of other possibly more profitable innovations results based on administrative data aida by bureau van dijk and patent data from patstat of italian manufacturing firms show that innovation efforts of polluting firms is significantly biased towards environmental innovations and that environmental innovations tend to crowd out other more profitable at least in the short run innovations

is environmental innovation embedded within high performance organisational changes the role of human resource management and complementarity in green business strategies abstract this paper investigates whether firms joint implementation of organisational innovation and training may foster their adoption of environmental innovation ei and if this correlation falls within porter hypothesis ph framework we study the relationship of complementarity between strategies of high performance work practices hpwp and human resource management hrm when ei adoption is the firms objective using an original dataset on 555 italian industrial firms regarding ei hpwp and hrm coherent with the last cis2006 2008 survey results show that sector specificity matter the only case in which strict complementarity is observed in organisational change concerns co 2 abatement a relatively complex type of ei but this is true only when the sample is restricted to more polluting and regulated sectors this evidence is coherent with the porter hypothesis complementarity related adoption of ei is an element of organisational change in firms that are subject to more stringent environmental regulations nevertheless the fact that strict complementarity is not a diffuse factor behind the adoption of all environmental innovation indeed does not come as a surprise at this stage in the development of green strategies the share of eco firms is still limited even in advanced countries that are seeking tools for a new competitiveness the full integration of eis within the internal capabilities and firm s own assets is far from being reached even in advanced and competitive industrial settings

the composition and construction of monetary aggregates an economic monetary aggregate is composed from a set of monetary goods that are at least weakly separable from other goods in the optimizing agent s utility function we construct such an aggregate using a divisia index number we demonstrate that through the middle of the 1980s forecasts of the inflation rate based on our economic monetary aggregate are superior to forecasts based on the simple sum monetary aggregates m1 or m2

do voluntary pollution reduction programs vprs spur or deter environmental innovation evidence from 33 50 abstract we study whether a government sponsored voluntary pollution reduction program vpr promotes or deters the development of new environmental technologies that yield future emission reduction benefits using a panel of 127 u s manufacturing industries defined by 3 digit sic classifications over the 1989 2004 period we estimate impacts of industry level participation in the 33 50 program a vpr initiated by government regulators in 1991 on industry level rates of environmental patenting we find that higher rates of 33 50 program participation are associated with significant reductions in the number of successful environmental patent applications five to nine years after the program ended

environmental innovations and firm profitability unmasking the porter hypothesis we examine impacts of different types of environmental innovations on firm profits following porter s sci am 264 4 168 1991 hypothesis that environmental regulation can improve firms competitiveness we distinguish between regulation induced and voluntary environmental innovations we find that innovations which do not improve firms resource efficiency do not provide positive returns to profitability however innovations that increase a firm s resource efficiency in terms of material or energy consumption per unit of output have a positive impact on profitability this positive result holds for both regulation induced and voluntary innovations although the effect is greater for regulation driven innovation we conclude that the porter hypothesis does not hold in general for its strong version but depends on the type of environmental innovation our findings rest on firm level data from the german part of the community innovation survey 2008 cis 2008