cost reduction competition and industry performance in many markets firms compete over time by expending resources with the purpose of reducing their costs sometimes the cost reducing investments operate directly on costs in many instances they take the form of developing new products that deliver what customers need more cheaply therefore product development can have the same ultimate effect as direct cost reduction in fact if one thinks of the product as the services it delivers to the customer in the way that lancaster pioneered then product development often is just cost reduction

weak disposability in nonparametric production analysis reply to fare and grosskopf fare and grosskopf this issue claim that a single abatement factor suffices for modeling weak disposability in nonparametric production models and that the kuosmanen 2005 technology that uses multiple abatement factors is larger than necessary this article demonstrates by a numerical example that a single abatement factor does not suffice to capture all feasible production plans and that its use leads to the violation of convexity one of the maintained assumptions of the model we also prove that the kuosmanen technology is the correct minimum extrapolation technology under the stated axioms

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

firm size and r d intensity a re examination using data from the federal trade commission s line of business program and survey measures of technological opportunity and appropriability conditions this paper finds that overall firm size has a very small statistically insignificant effect on business unit r d intensity when either fixed industry effects or measured industry characteristics are taken into account business unit size has no effect on the r d intensity of business units that perform r d but it affects the probability of conducting r d business unit and firm size jointly explain less than one per cent of the variance in r d industry effects explain nearly half the variance two sets of well known hypotheses are associated with the later work of joseph schumpeter the first concerns the effects of market concentration on research and development investment and on innovative performance the second bears on the effects of firm size on r d and innovation in a recent paper levin cohen and mowery 1985 we re examined the first set of hypotheses simple regressions at the line of business level replicated the established findings that both r d intensity and innovative performance first increase and then decrease as industrial concentration rises the effect of concentration however was sharply attenuated when we controlled for interindustry differences in technological opportunity and in the appropriability of returns from new technology our results suggested that it is probably unwarranted to conclude that market concentration favors r d investment and innovation in this paper we investigate the schumpeterian hypothesis that large size is conducive to r d investment this relationship has been studied at least as intensively as the link between concentration and r d but our approach is novel in two respects first using data collected by the federal trade

r d support programs in developing countries the turkish experience in this study the determinants of private r d investment are examined at the level of firms in the turkish manufacturing industry we focus our attention on the effect of public r d support programs our findings indicate that public r d support significantly and positively affects private r d investment there seems to be even an acceleration effect on firm financed r d expenditures smaller r d performers benefit more from r d support and perform more r d in addition technology transfer from abroad and domestic r d activity show up as complementary processes given the scarcity of studies on r d support in technologically weaker economies our hope is that the less developed countries can exploit these findings in constructing socially beneficial technology policies

the cyclical and secular behaviour of the labour input comparing efficiency units and hours worked summary a monthly labour input series designed to correct for the fact that all hours worked are not of the same quality is constructed and its properties compared with unadjusted hours worked this efficiency units series is constructed from bls data on hours worked and earnings by age and sex the cyclical fluctuations displayed by the efficiency units series are smaller on average than those displayed by hours worked although the difference is not large however the secular behaviour of the series is quite different hours worked per capita displays a significant positive trend while efficiency units per capita does not

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

a kuznets curve in environmental efficiency an application on oecd countries the role of the environment is an important issue in policy making andthe accurate assessment of the environmental conditions is vital inthis paper using nonparametric techniques an environmental efficiencyindex is developed for each of the oecd countries these indexes allowone both to do cross section comparisons on the state of each country sproduction process in its treatment of undesirable outputs and also totrace each country s modification of their production processesovertime furthermore in this study we investigate the factorsunderlying societies environmental concerns that eventually lead tochanges in the environmental efficiency the results provide furtherempirical evidence for the environmental kuznets curve hypothesis

r d appropriability opportunity and market structure new evidence on some schumpeterian hypotheses one of the largest bodies of literature in the field of industrial organization is devoted to the interpretation and testing of several hypotheses advanced by joseph schumpeter 1950 concerning innovation and industrial market structure one set of hypotheses focuses on the role of firm size as a determinant of r d spending and the rate of technological advance another set focuses on the effect of market concentration on r d and technological advance in this paper we reexamine the latter set of hypotheses at the industry level using new data on r d appropriability and technological opportunity collected by levin et al 1984 in a survey of r d executives in 130 industries

should we refinance unfunded social security within a continuous time overlapping generations model featuring endogenous intensive margin of the labour supply and retirement decision we analyse the issue of passing the burden of payroll revenues onto consumption or capital we find that large long run welfare gains occur when pension benefits are refinanced by consumption taxes however the transition to the new steady state is very painful for a large fraction of existing cohorts on the other hand the capital base is too small to sustain pension benefits but could be made larger if capital taxes are raised yet that would entail significant welfare losses

saving and liquidity constraints this paper is concerned with the theory of saving when consumers are not permitted to borrow and with the ability of such a theory to account for some of the stylized facts of saving behavior the models presented in the paper seem to account for important aspects of reality that are not explained by traditional life cycle models copyright 1991 by the econometric society

in defence of the linear model an essay this essay discusses the strength and weaknesses of the so called linear model lm of innovation it is a reaction to the habit of criticising it as over simplistic mechanistic or simply blatantly wrong we argue that while some criticisms are of course well grounded many others are instead based on loose interpretations and unwarranted assumptions in order to separate the wheat from the chaff this essay first presents a comprehensive description of the linear model and differentiates it from the caricature many refer to second we discuss the main criticisms put forward and argue that many of them are not at all destructive but can be easily accepted within a refined version of the lm third we discuss the policy implications often derived or said to derive from the lm to argue that the lm itself is distinctively policy neutral other assumptions have to be added to justify alternative policy implications

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

humps and bumps in lifetime consumption in this article we argue that the life cycle model that allows demographics to affect household preferences and relaxes the assumption of certainty equivalence can generate hump shaped consumption profiles over age that are very similar to those observed in household level data sources and in particular match the differences in shape across different education groups liquidity constraints or myopia are not required to explain the empirical features of observed life cycle patterns

on the sources and significance of interindustry differences in technological opportunities abstract the set of technological opportunities in a given industry is one of the fundamental determinants of technical advance in that line of business we examine the concept of technological opportunity and discuss three categories of sources of those opportunities advances in scientific understanding and technique technological advances originating in other industries and in other private and governmental institutions and feedbacks from an industry s own technological advances data from the yale survey on industrial research and development are used to measure the strength of various sources of technological opportunity and to discern interindustry differences in the importance of these sources we find that interindustry differences in the strength and sources of technological opportunities contribute importantly to explanations of cross industry variation in r d intensity and technological advance

a leisurely reading of the life cycle consumption data abstract a puzzle in consumption theory is the observation of a hump in age consumption profiles this paper studies a general equilibrium life cycle economy with capital in which households include both consumption and leisure in their period utility function a calibrated version of the model shows that a significant hump in life cycle consumption is a feature of the equilibrium thus inclusion of leisure in household preferences may provide part of the explanation of observed life cycle consumption humps

globalisation of knowledge production and regional innovation policy supporting specialized hubs in the bangalore software industry abstract this paper is concerned with the changing role of regional innovation systems and regional policies in supporting the transition of indigenous firms in developing countries from competing on low costs towards becoming knowledge providers in global value chains special attention is paid to policies supporting the emergence and development of the regional innovation system in this transition process regional innovation systems in developing countries have very recently started to be conceptualised as specialized hubs in global innovation and production networks asheim b coenen l vang lauridsen j 2007 face to face buzz and knowledge bases socio spatial implications for learning innovation and innovation policy environment and planning c government and policy 25 5 655 670 chaminade c vang j 2006a innovation policy for small and medium size smes in asia an innovation systems perspective in yeung h ed handbook of research on asian business edward elgar cheltenham maggi c 2007 the salmon farming and processing cluster in southern chile in pietrobello c rabellotti r eds upgrading and governance in clusters and value chains in latin america harvard university press a specialized hub refers to a node in a global value chain that mainly undertakes one or a few of the activities required for the production and development of a given good or service or serves a particular segment of the global market in global value chains firms in developing countries have traditionally been responsible for the lowest added value activities however a few emerging regional innovation systems in developing countries are beginning to challenge this scenario by rapidly upgrading in the value chain there is however still only a poorly developed understanding of how the system of innovation emerges and evolves to support this transition process and what the role of regional innovation policy is in building the regional conditions that support indigenous small and medium size enterprises smes in this transition process this paper aims at reducing this omission by analyzing the co evolution of the strategies of indigenous smes and the regional innovation system of bangalore india

short term planning and the life cycle consumption puzzle abstract we develop a new life cycle consumption model where the individual has a short planning horizon standard life cycle consumers with perfect foresight and hand to mouth consumers are both special limiting cases of our model where the length of the planning horizon is set to the entire lifetime and zero respectively we derive an analytical solution to the time inconsistent short term planning problem which reveals the inner workings of the model and facilitates its use in other settings we also show that the short term planning mechanism is powerful enough to generate a consumption hump with the right size and location

efficiency dynamics in indian banking a conditional directional distance approach abstract the paper contributes to the contemporary research on bank efficiency in india we analyze the efficiency dynamics of the indian banking industry from 2004 to 2012 based on the recent methodological developments of the conditional and unconditional directional distances introduced by daraio and simar 2014 we apply a conditional directional distance estimator in order to analyze the dynamic effects of industry s performance levels the results indicate that foreign banks perform better compared to national and domestic private banks there is also evidence of technological change at the period before the global financial crisis however during and after the global financial crisis these gains diminished the evidence suggests that national banks fail to sustain their high performance levels gained after the industry s restructuring period finally the findings support the view that ownership structure affects banks technical efficiency levels

consumption and time use over the life cycle we incorporate home production in a dynamic general equilibrium model of consumption and savings with illiquid housing and a collateralized borrowing constraint the calibrated model explains life cycle patterns of households time use and consumption of different categories documented from the microdata it predicts that the interaction of the labor efficiency profile and the home production technology explains households time use the resulting income profiles the endogenous borrowing constraint and home production account for the initial hump in consumption the complementarity of home hours home input and housing in home production drives the consumption profiles later in the life cycle

measuring the effect of economic growth on countries environmental efficiency a conditional directional distance function approach using a recently developed probabilistic approach of a conditional directional distance function we measure the effect of economic growth on countries environmental efficiency in carbon dioxide emissions for a sample of 99 countries over the period of 1980 2010 our approach directly accounts for the exogenous factors influencing countries environmental production therefore we do not impose the separability condition on the estimated environmental efficiencies when examining the entire sample as well as the sample of developed countries our results reveal an inverted u shaped relationship between countries gdp per capita and environmental efficiency however when examining the relationship for the sample of developing countries the results reveal an n shaped form moreover our results show that countries ratifying the kyoto protocol tend to have higher efficiency scores implying that their mitigation activity is less costly

imitation costs and patents an empirical study it has long been recognised that the costs of imitating new products have an important effect on the incentives for innovation in a market economy as arrow i962 and others have pointed out if firms can imitate an innovation at a cost that is substantially below the cost to the innovator of developing the innovation there may be little or no incentive for the innovator to carry out the innovation in their discussions of the innovation process economists frequently have called attention to the major role played by the costs of imitation but there has been little or no attempt to measure these costs to test various hypotheses concerning the factors influencing them or to estimate their effects in this paper we report some findings of what seems to be the first study of this topic in addition we present data regarding the effects of patents on imitation costs and on the rate of innovation

economic growth and environmental efficiency evidence from us regions abstract this paper proposes a conditional directional distance function estimator in order to examine the link between regional environmental efficiency and gdp per capita levels as an illustrative example we apply our model to us regional data revealing an inverted u shape relationship between regional environmental efficiency and per capita income the results derived from a non parametric regression indicate a turning point at 49 000 dollars

invention and innovation in the chemical industry demand pull or discovery push abstract this paper describes a study of the determinants of the rate direction and scale of inventive and innovative activity in the chemical industry over the period 1830 1980 statistical data are interpreted in the light of case study material in three major sectors dyestuffs plastics and pharmaceuticals theories of technical change and economic growth particularly those of schmookler and schmpeter are examined in relation to this material on the chemical industry the findings suggest that the importance of demand pull and discovery push factors and the validity of schmookler s and schumpeter s theories vary over an industry s life cycle

the life cycle model of consumption and saving a central implication of life cycle models is that agents smooth consumption we review the empirical evidence on smoothing at frequencies from within the year up to across a lifetime we find that life cycle models particular those which incorporate realistic features of markets and goods have more empirical successes than failures we also show that some apparent deviations from theoretical predictions imply very small welfare losses for agents finally we emphasize that the coherence of life cycle models imposes an important discipline when incorporating new features into models

liberalization outward orientation and in house r d activity of multinational and local firms a quantitative exploration for indian manufacturing abstract in an increasingly globalizing and knowledge based world economy the declining importance of r d activity in india is a matter of concern this paper analyzes the determinants of r d behaviour of indian enterprises over the 1990s in the context of the reforms of 1991 and their impact on the r d behaviour of mne affiliates and local enterprises the analysis suggests that although average levels of spending have fallen increased competition due to liberalization seems to have pushed local firms to rationalize their r d activity and make it more efficient also r d spending seems to rise more than proportionally with firm size after a certain threshold level has been reached the analysis brings out differences in the nature of r d activity of mne affiliates and local firms local firms direct their r d activity primarily towards the assimilation of imported technology and to providing a backup to their outward expansion via exports and fdi mne affiliates on the other hand focus on exploiting the advantages of india as an r d platform for their parents the paper is concluded with some policy implications of the findings

bounded rationality lifecycle consumption and social security abstract this paper explores an overlapping generations model of bounded rationality in which consumers only foresee the future over a subset of their life span we focus in particular on whether the model can in general equilibrium produce a hump shaped lifecycle consumption profile with a peak that matches data for the average u s consumer for a simple four period model we show that an increasing income profile along with exogenously imposed retirement are sufficient to induce a hump with no other mechanism that can account for a hump besides bounded rationality the model best fits the salient features of consumption data with a planning horizon of 20 years which is well supported by the behavioral evidence found in surveys on retirement planning finally we show that the age of the consumption peak is robust to the introduction of social security mortality risk and another species of bounded rationality quasihyperbolic discounting moreover social security can be welfare improving with a short planning horizon we can calibrate the model to jointly explain the timing of the consumption hump and the optimality of the current social security system with quasihyperbolic discounting instead we can calibrate the model so the current social security system is optimal but we cannot also account for the timing of the consumption hump if we add quasihyperbolic discounting in addition to a short planning horizon the present bias has a negligible effect in equilibrium

searching for a kuznets curve in environmental efficiency using kernel estimation abstract the paper constructs environmental efficiency indexes for a sample consisting of high and low income countries using nonparametric production frontier techniques and then establishes an environmental kuznets relationship for environmental efficiency by nadaraya watson kernel estimation methodology

weak disposability in nonparametric production analysis with undesirable outputs environmental economics and natural resources group at wageningen university in the netherlands weak disposability of outputs means that firms can abate harmful emissions by decreasing the activity level modeling weak disposability in nonparametric production analysis has caused some confusion this article identifies a dilemma in these approaches conventional formulations implicitly and unintentionally assume all firms apply uniform abatement factors however it is usually cost effective to abate emissions in those firms where the marginal abatement costs are lowest this article presents a simple formulation of weak disposability that allows for non uniform abatement factors and preserves the linear structure of the model

life cycle economies and aggregate fluctuations do the implications for business cycle issues change when we switch from studying infinitely lived representative agent models to more sophisticated demographic structures with finitely lived agents this article addresses that question by using a large overlapping generations model that is calibrated to u s demographic properties microeconomic evidence and national income and product accounts the finding is that the answers obtained are basically the same for the two kinds of models the article also explores the relative volatility of hours across age groups an issue that cannot be addressed by using the infinitely lived representative agent abstraction

should the government protect its basic research basic research is mainly performed publicly yet in the us public research findings were not patentable until 1980 and in other countries are not yet patentable patentability renders public research more directed with less potential waste but it also restricts private applied research this paper shows by means of a multi stage schumpeterian growth model that in the long run the first effect is bound to dominate

the roles of science in technological innovation abstract one of the central issues in science policy during the past decade has been the extent to which the national levels of expenditure on scientific education and research influence the standard of living this paper provides empirical evidence to show that the pay off from this investment in science is more complex and indirect than previously supposed

information appropriability and the generation of innovative knowledge four decades after arrow and nelson an introduction this introduction sets in context the works that follow which are meant to take stock of the theoretical advances and also historical changes since the seminal arrow 1962 and nelson 1959 first we summarize some of the original arrow nelson insights second we map the subsequent developments shorthanded as the stanford yale sussex synthesis a particularly controversial issue concerns the relationships between notional opportunities of innovation private appropriability of return from innovating and realized rates of innovation hence third we briefly offer a framework for its discussion in general and with reference to the private appropriation of scientific knowledge copyright 2006 oxford university press

encouraging university entrepreneurship the effect of the bayh dole act on university patenting in the united states abstract universities are seen as a source of technology development that is useful to entrepreneurial activity as a result policy makers often consider mechanisms to stimulate technology commercialization at research universities as a way to encourage entrepreneurial activity in a region however the transfer of technology from universities to the private sector requires the exploitation of markets for knowledge which are fraught with difficulty arrow k 1962 economic welfare and the allocation of resources for inventions in nelson r ed the rate and direction of inventive activity princeton nj princeton univ press this article examines the effect of one u s public policy initiative the bayh dole act in the united states on one aspect of technology commercialization university patenting specifically the article explores the university share of patents from 1969 through 1996 across 117 lines of business and shows that the effectiveness of licensing in a line of business is significantly correlated with university share of patents in the post bayh dole period but not in the pre bayh dole period these results suggest that the bayh dole act provided incentives for universities to increase patenting in those fields in which licensing is an effective mechanism for acquiring new technical knowledge the paper discusses the implications of this shift in patenting for research and public policy

population economic growth and regional environmental inefficiency evidence from u s states we apply a conditional directional distance function allowing multiple exogenous factors to measure environmental performance we evaluate the air pollution performance levels of u s states for the years 1998 and 2008 states environmental inefficiency is determined by population size and gdp per capita gdppc the overall results reveal that there is much variation in environmental inefficiencies among the u s states a second stage nonparametric analysis indicates a nonlinear relationship between states population size gdppc levels and states environmental inefficiency levels our results indicate that environmental inefficiency on the whole decreases with increased population and income per capita but there are limits to this improvement and at high income and population levels the tendency may reverse

social security growth and welfare in overlapping generations economies with or without annuities we examine the impact of a stylized pay as you go paygo social security program in an economy of overlapping generations with equilibrium growth we adopt realistic mortality and other demographic assumptions and allow for the presence or absence of life annuities in all cases steady state economies with paygo social security programs grow more slowly than those without also we find that lifetime expected utilities are lower for existing and future households in steady state economies with social security we also report the effect of social security on the age profile of consumption and explore the effects of longer life expectancy compensating social security program changes and capital subsidies

r d determinants accounting for the differences between research and development the determinants of r d are an important topic of innovation studies the classical schumpeterian hypotheses about the influence of size and market power have been complemented with the role played by industry determinants such as demand pull technological opportunity and appropriability in determining r d investments however r d has always been considered as a whole even though research and development activities differ in many aspects we take advantage of a new panel database of innovative spanish firms pitec to distinguish between research and development efforts of firms we analyze the differentiated role played by traditional r d determinants in driving research and development results show that demand pull and appropriability have a higher effect on development while technological opportunity is more influential for research differences are statistically significant important in magnitude and robust to the use of different indicators for demand pull technological opportunity and appropriability and to several robustness checks

opportunity cost estimation of ecosystem services land use changes rank among the most significant drivers of change in ecosystem services worldwide the enhancement of important services such as biodiversity and carbon sequestration requires modifications in land use that can lead to the decline in other ecosystems services targeting the most suitable areas for particular land uses based on comparative advantages requires opportunity cost information across large regions this is a demanding task because the input output relations are ill defined and determined by spatially heterogeneous operational and environmental conditions to address this methodological challenge this paper presents a two stage semiparametric technique that enables multi dimensional production possibility frontiers to be estimated from data provided by biophysical models specific advantages of the proposed frontier approach are its flexibility with regard to assumptions on the convexity of the production possibility set and its freedom from any separability assumptions for the input output space and the space of the heterogeneous background variables the method is illustrated for a case study of 18 central and eastern european countries results show that opportunity costs of changes in ecosystem services provision differ substantially between regions those areas having already relatively high levels of carbon sequestration have a comparative advantage in sequestering carbon opportunity costs of biodiversity are generally positively related with the level of biodiversity up to a turning point after which they are negatively related to illustrate the policy consequences of the observed economies and diseconomies of scope we compare two management regimes to illustrate the potential gains from smart land management

cost reducing and demand creating r d with spillovers this article analyzes r d policies when the returns to cost reducing and demand creating r d are imperfectly appropriable and market structure is endogenous we generalize previous characterizations of appropriability to permit the possibility that own and rival r d are imperfect substitutes we also describe how equilibrium expenditures on process and product r d as well as equilibrium market structure depend on technological opportunities and spillovers in contrast to previous work diminished appropriability does not necessarily reduce r d expenditures for example under some conditions an increase in the extent of process product spillovers will lead to an increase in product process r d we estimate several variants of the model by using manufacturing line of business data and data from a survey of r d executives