the ineffectiveness of quantitative restrictions with production diversion long ago meade 21 and samuelson 23 noted that when the number of goods exceeds the number of factors in a general equilibrium model the production set will not be strictly convex later studies have focused either on the shape and geometry of the production possibility frontier 22 17 18 15 26 13 or on generalizations of the stolper samuelson rybczynski and factorprice equalization theorems 22 16 4 27 little attention however has been given to the policy implications for quantitative restrictions qrs in a model with more goods than factors traditional results in trade theory are based on a 2 x 2 x 2 general equilibrium model within this context qrs have effects similar to tariffs namely they raise the domestic price of the protected good increase output and factor usage in the industry and raise the returns to factors used intensively in the industry 5 2 14 bhagwati 3 has shown that quotas and tariffs are equivalent when there is perfect competition in the domestic market but that equivalence will break down in the presence of a domestic monopoly further studies by itoh and ono 12 benson and hartigan 1 hwang and mai 11 and dockner and haug 7 demonstrate surprising results about when equivalence holds under various assumptions of imperfect competition 25 12 20 in this paper we will show that qrs need not be equivalent to tariffs even in a perfectly competitive model as long as there are more goods than factors of production we define production pattern replicate equilibria as the set of world production and trade configurations that can be supported by one vector of equilibrium prices in general replicate equilibria exist whenever there are more goods than factors because in this situation there will exist an infinite number of production configurations consistent with any equilibrium price vector in each country 2 as melvin 22 1263 points out the most important conclusion to be drawn from this indeterminacy is that the actual pattern of trade depends on which of the possible production configurations is chosen this corresponds to our notion of replicate equilibria since a qr represents a restriction only on a particular pattern of trade it may not preclude the existence of a replicate equilibrium not restricted by the qr

multidimensional mechanism design for auctions with externalities abstract in an auction with externalities a buyer s type is multidimensional and specifies the payoff he would get for each of the n 1 possible outcomes the seller keeps the object or buyer i i 1 n gets the object we provide a characterization of multidimensional incentive compatible mechanisms similar to that for one dimensional mechanisms although reservation utilities are endogenous and type dependent the participation constraint is binding for only one critical type a main difficulty in a multidimensional setting is the integrability condition we present a geometric characterization for discontinuous conservative vector fields in auctions where the buyers submit scalar bids and the seller transfers the object to one of the buyers for sure a second price auction maximizes revenue with two buyers this auction remains optimal even if the seller can set a reservation price journal of economic literature classification numbers c7 c72

understanding innovation an analysis of persistence for spanish manufacturing firms abstract this study focuses on the persistence of innovation in a panel of spanish manufacturing firms for the period 1990 2008 in particular we analyse whether persistence in firms innovation activities over time is the result of previous experience the dynamic capabilities of the firm or industry market related characteristics we find that r d input and innovation output are highly persistent at the firm level after controlling for unobserved heterogeneity and initial conditions and by using a dynamic random effects probit we conclude that there are similar determinants of persistence in r d and innovative activities among external environmental factors market dynamism affects r d and innovation regarding firm specific characteristics size and outsourcing also have a positive impact on both processes past innovative behaviour is clearly more decisive in explaining the current state of r d and innovation activities than external factors or firm level heterogeneity

industry and firm specific factors of innovation novelty this article investigates the underlying factors that might shape the firm s choices with respect to degrees of innovation novelty using a sample of 2983 firms observed under the portuguese community innovation survey we assess the relative relevance of a set of firm and industry specific factors in explaining firms choices about incremental or radical innovation the results indicate that both the firm s idiosyncratic historical factors giving rise to heterogeneous r d capabilities and the industry context have power to shape the firm s innovation choices even though firm specific factors appear to be more powerful the estimated impacts on firm s innovation novelty are nonetheless significantly moderated by the type of firm and industry

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

explaining the attacker s advantage technological paradigms organizational dynamics and the value network abstract understanding when entrants might have an advantage over an industry s incumbent firms in developing and adopting new technologies is a question which several scholars have explained in terms of technological capabilities or organizational dynamics this paper proposes that the value network the context within which a firm competes and solves customers problems is an important factor affecting whether incumbent or entrant firms will most successfully innovate in a study of technology development in the disk drive industry the authors found that incumbents led the industry in developing and adopting new technologies of every sort identified by earlier scholars at component and architectural levels competency enhancing and competency destroying incremental and radical as long as the technology addressed customers needs within the value network in which the incumbents competed entrants led in developing and adopting technologies which addressed user needs in different emerging value networks it is in these innovations which disrupted established trajectories of technological progress in established markets that attackers proved to have an advantage the rate of improvement in product performance which technologists provide may exceed the rate of improvement demanded in established markets this mismatch between trajectories enables firms entering emerging value networks subsequently to attack the industry s established markets as well

technological regimes and schumpeterian patterns of innovation this paper proposes that the specific pattern of innovative activities in an industry can be explained as the outcome of different technological learning regimes a technological regime is defined by the particular combination of technological opportunities appropriability of innovations cumulativeness of technical advances and properties of the knowledge base building upon the distinction between schumpeter mark i and schumpeter mark ii industries this paper provides empirical estimates of the relationships between indicators of the schumpeterian patterns of innovation concentration of innovative activities stability in the hierarchy of innovators and importance of new innovators and indicators of the variables defining technological regimes

bundling as an optimal selling mechanism for a multiple good monopolist abstract multiple objects may be sold by posting a schedule consisting of one price for each possible bundle and permitting the buyer to select the price bundle pair of his choice we identify conditions that must be satisfied by any price schedule that maximizes revenue within the class of all such schedules we then provide conditions under which a price schedule maximizes expected revenue within the class of all incentive compatible and individually rational mechanisms in the n object case we use these results to characterize environments mainly distributions of valuations where bundling is the optimal mechanism in the two and three good cases

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

the size distribution of innovating firms in the uk 1945 1983 a survey of 4 378 significant innovations shows that firms with fewer than 1 000 employees commercialized a much larger share than is indicated by their share of r and d expenditures innovations per employee have been consistently above average in firms with more than 10 000 employees and have become so in firms with fewer than 1 000 intersectoral variation in the size distribution of innovating firms can be explained as a function of r and d based technological opportunities and of technological ease of entry by user firms with principal activities outside the sector copyright 1987 by blackwell publishing ltd

exploring the capital goods economy complex product systems in the uk over the past decade qualitative empirical research at the firm project and industry levels has improved our understanding of the characteristics and dynamics of innovation in the high technology high value capital goods or complex product systems cops which underpin modern industrial activity this paper describes the development of a new industrial classification system for cops which is able to estimate quantitative shares of production and value added accounted for by cops at the economy level it is also able to provide insights into the capital information technology and skill intensity of cops as well as employment contributions as an example the method is applied to one major industrial economy namely the uk through a comparison of cops with non cops industries the paper identifies some of the key factors which explain the different patterns of innovation between the two types of industrial activity although preliminary the analysis shows that cops based industries together represent a distinctive class of industrial activity based on the classification system provided further research is underway to examine cross country comparisons in both production and trade performance through time

when do stronger patents increase continual innovation under continual innovation greater patent strength expands innovating firms profit against imitation but also shifts profit from current to past innovators we show how the impact of patents on innovation as determined by these two opposing effects varies with industry characteristics when the discount factor is sufficiently high the negative profit division effect is negligible and innovation monotonically increases in patent strength otherwise innovation has an inverted u relationship with patent strength and stronger patents are more likely to increase innovation when the discount factor or the fixed innovation cost is higher we also show how the impact of patents on innovation may change with firms innovation capability and with the intensity of competition from imitators

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

bundling decisions in procurement auctions with sequential tasks abstract this paper investigates the principal s bundling decision during a procurement auction for a project consisting of two sequential tasks in which task externality exists and information arrives sequentially we show that although increasing the number of bidders in the market for the second task always tilts the principal s choice toward unbundling increasing the number of consortiums that can perform both tasks tilts the principal s preference toward bundling if the externality is negative

analyzing the functional dynamics of technological innovation systems a scheme of analysis various researchers and policy analysts have made empirical studies of innovation systems in order to understand their current structure and trace their dynamics however policy makers often experience difficulties in extracting practical guidelines from studies of this kind in this paper we operationalize our previous work on a functional approach to analyzing innovation system dynamics into a practical scheme of analysis for policy makers the scheme is based on previous literature and our own experience in developing and applying functional thinking it can be used by policy makers not only to identify the key policy issues but also to set policy goals

mapping the institutional capital of high tech firms a fuzzy set analysis of capitalist variety and export performance we examine how institutional configurations not single institutions provide companies with institutional capital building on the varieties of capitalism approach it is argued that competitive advantage in high tech industries with radical innovation may be supported by combinations of certain institutional conditions lax employment protection weak collective bargaining coverage extensive university training little occupational training and a large stock market furthermore multinational enterprises engage in institutional arbitrage they allocate their activities so as to benefit from available institutional capital these hypotheses are tested on country level data for 19 oecd economies in the period 1990 to 2003 a fuzzy set qualitative comparative analysis yields several interesting findings a high share of university graduates and a large stock market are complementary institutions leading to strong export performance in high tech employment protection is neither conducive nor harmful to export performance in high tech a high volume of cross border mergers and acquisitions as a form of institutional arbitrage leading to knowledge flows acts as a functional equivalent to institutions that support knowledge production in the home economy implications of these findings for theory policy and the analysis of firm level behavior are developed

the footprint of evolutionary processes of learning and selection upon the statistical properties of industrial dynamics evolutionary theories of economic change identify the processes of idiosyncratic learning by individual firms and of market selection as the two main drivers of the dynamics of industries are such processes able to account for the statistical regularities which industrial structures and dynamics display in this work we address this question by means of a simple multi firm model formalizing the mechanisms of learning and selection as such despite its simplicity the model is able to robustly reproduce an ensemble of empirical stylized facts including ample heterogeneity in productivity distributions persistent market turbulence and fat tailed distribution of growth rates

knowledge diffusion market segmentation and technological catch up the case of the telecommunication industry in china abstract this paper examines the growth of technological capability in the telecommunication industry in china we apply a modified version of lee and lim s lee k lim c 2001 the technological regimes catch up and leapfrogging findings from the korean industries research policy vol 30 model of technological learning and catching up using the three cases of the shanghai bell the cit led r d consortium and indigenous companies such as huawei we analyze how the catching up in the telecommunication industry occurred we find that the important factors in the catch up are the strategy of trading market for technology the knowledge diffusion from shanghai bell both to the r d consortium and to huawei and industrial promotion by the government as a condition for successful catch up the paper points out that the technological regime of the telephone switches is featured by a more predictable technological trajectory and a lower cumulativeness these conditions and strategies helped the chinese firms to achieve a stage skipping catch up namely by skipping the stage of analogue electronic switches to jump to digital electronic switches

schumpeterian patterns of innovation using patent data for four countries germany france united kingdom and italy for the period 1968 1986 the authors find that the patterns of innovative activities differ systematically across technological classes while remarkable similarities emerge across countries in the patterns of innovative activities for each technological class this result strongly suggests that technological imperatives and technology specific factors closely linked to technological regimes play a major role in determining the patterns of innovative activities across countries schumpeter proposed two major patterns of innovative activities the first one labelled by nelson and winter 1982 and kamien and schwartz 1982 as schumpeter mark i is proposed in the theory of economic development 1934 in this work schumpeter examined the typical european industrial structure of the late nineteenth century characterised by many small firms according to this view the pattern of innovative activity is characterised by technological ease of entry in an industry and by a major role played by new firms in innovative activities new entrepreneurs come in an industry with new ideas new products or new processes launch new enterprises which challenge established firms and thus continuously disrupt the current ways of production organisation and distribution and wipe out the quasi rents associated with previous innovations the second one labelled schumpeter mark ii is proposed in capitalism socialism and democracy 1942 in this work inspired by the features of the american industry of the first half of the twentieth century schumpeter discussed the relevance of the industrial r d laboratory for technological innovation and the key role of large firms according to this view the pattern of innovative activities is characterised by the prevalence of large established firms and by relevant barriers to entry for new innovators large firms have institutionalised the innovation process with the creation of r d laboratories filled with researchers technicians and engineers with their accumulated stock of knowledge in specific technological areas their advanced competence in large scale r d projects production and distribution and their relevant financial resources they create barriers to entry to new entrepreneurs and small firms

ownership and firm innovation in a transition economy evidence from china we examine innovation performance of firms in a transition economy from an ownership perspective we focus specifically on the relationship between ownership structures and firm innovation performance drawing on data from 548 chinese firms we find volume of patent registration to be most strongly influenced by foreign ownership in the firm along with firm affiliation within a business group the influence of state and institutional ownership on innovation performance is positive but lagged contrary to expectations insider ownership leads to lower innovation performance and concentrated ownership has no significant impact our study has two principal contributions firstly we utilize a comprehensive treatment of ownership characteristics overcoming weakness in previous studies that have used a more narrow focus on ownership type secondly we contribute to understanding of how firms in transition economies build indigenous capabilities for innovation by drawing attention to the interplay of foreign and domestic control of agents innovation

schumpeterian competition technological regimes and learning through knowledge spillover abstract this paper builds upon winter 1984 in which the author discusses two views of schumpeter on competition specifically technological regimes and the role of knowledge spillovers for innovation are examined an agent based simulation model is formulated which captures the relevant aspect of competition between firms in an innovative industry results of the simulation runs indicate that at first the technological development in terms of process and product innovations is better in an industry that is characterized by schumpeter mark ii conditions but the improved technological development is connected with higher prices and profits which could be interpreted as a trade off between static and dynamic efficiency second in both scenarios market and industry concentration rises over time showing a strong separation between successful firms and those lagging behind in technological terms and third surprisingly firms in a schumpeter mark i regime seem to be more technologically specialized furthermore this article proves that a replication of simulation models is possible and useful

capital markets and dimension in neoclassical models of growth with trade abstract this paper explores the role of arbitrary assumptions regarding dimension and the tradeability of capital in neoclassical growth models it is shown that international markets for physical and financial capital are required to reproduce the competitive world growth path only when the number of traded non capital goods is less than the number of factors provided that countries are diversified along their growth paths capital markets compensate for lacking consumption good markets in models with low dimension thus reinforcing an earlier static argument that trade theory requires a sufficient number of markets rather than particular dimensional attributes

mixed bundling auctions we study multi object auctions where agents have private and additive valuations for heterogeneous objects we focus on the revenue properties of a class of dominant strategy mechanisms where a weight is assigned to each partition of objects the weights influence the probability with which partitions are chosen in the mechanism this class contains efficient auctions pure bundling auctions mixed bundling auctions auctions with reserve prices and auctions with pre packaged bundles for any number of objects and bidders both the pure bundling auction and separate efficient auctions for the single objects are revenue inferior to an auction that involves mixed bundling

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

profits r d and innovation a model and a test in this article we investigate both conceptually and empirically the relationships between three interconnected elements of the schumpeterian engine of progress the ability of industries rd the ability of innovations to lead to high entrepreneurial profits the commitment of industries to invest profits in further technological efforts we build a simultaneous three equation model with appropriate lags and we test it at industry level for 38 manufacturing and service sectors on eight european countries over two time periods from 1994 to 2006 the results show that the model effectively accounts for the dynamics of european industries

an institutionalized policy making mechanism china s return to techno industrial policy abstract technology and innovation policy in china shifted dramatically in 2003 returning to techno industrial policy that involves direct government interventions to shape specific industrial sectors this article precisely documents the shift and shows that it occurred through two successive waves of policy change this policy shift was formulated through a policy process that like others in china has become increasingly institutionalized the article introduces a general four phase model that describes the structured policy process in china in the case of innovation policy this structured policy process facilitated a shift to a substantially more interventionist policy

why do firms do basic research with their own money abstractthe question to be addressed is why do private firms perform basic research with their own money interest in this question derives from both analytical and utilitarian considerations there is empirical evidence in the united states which provides the main context for this paper supporting the view that basic research makes a significant contribution to the productivity growth of the economy 4 7 it is widely held that social returns from basic research are significant and higher than private returns and it is for this reason that most such activities continue to be financed by the taxpayer this also implies that measures aimed at increasing basic research by the private sector will be welfare improving in the united states the federal government in the years since the second world war has provided the vast majority of all funds devoted to basic research although the federal share has been declining in recent years and although that share is at its lowest level in about 20 years it still constitutes about two thirds of the total 10 this abstract was borrowed from another version of this item

linking the technological regime to the technological catch up analyzing korea and taiwan using the us patent data this article examines the relationship between the technological regime and the technological catch up using us patent data this study first extends the notion of technological regimes as more appropriate for the catching up context before it goes on to develop the quantitative expressions of technological regime variables then it investigates in which technological classes technological catch up tends either to occur or not to occur and what affects the speed of the catch up this study has found that catching up is more likely to happen in those technological classes with shorter technological cycle time and more initial stock of knowledge and that among those candidate classes the actual speed of catch up varies depending on appropriability and knowledge accessibility this implies that the factors that determine the occurrence of catch up and the speed of catch up are different comparing the level of technological capability of the advanced and catching up economies the article has found that catching up countries tend to achieve high levels in the technological sectors with shorter cycle time easier access to knowledge and higher appropriability whereas the advanced countries show the exactly opposite performances the study also confirms the organizational selection hypothesis such that the firms of different organizations and strategies show divergent degrees of fitness in the different environment or technological regime we find that the korean firms find themselves more fitted to technological regimes featured by low appropriability and high cumulativeness persistence whereas the taiwanese firms are more fitted to technological regimes featured by high appropriability and low cumulativeness persistence our findings are consistent with the following characterization of the firms in korea and taiwan the korean firms dominated by the so called chaebols especially in patent registrations are characterized as less flexible large diversified conglomerates and pursing more independent r d and learning strategies the taiwanese firms are characterized as more flexible network based specialized firms and pursuing more cooperative r d and learning strategies copyright 2006 oxford university press

approximately optimal auctions for correlated bidders abstract we consider the design of dominant strategy incentive compatible revenue maximizing auctions for an indivisible good when bidders values are drawn from a correlated distribution for independent distributions myerson showed that the optimal auction for risk neutral bidders remains incentive compatible regardless of bidders risk attitudes we show that for correlated distributions the same is true when only two bidders are involved whereas for more bidders randomization can generate strictly more revenue however for risk neutral bidders we show this gain is never more than a 5 3 factor this is a consequence of two results of independent interest 1 a polynomial time derandomization of auctions for two bidders 2 a polynomial time computable deterministic auction that 5 3 approximates the optimal revenue extractable from risk neutral bidders moreover we give a polynomial time algorithm to compute optimal auctions for a constant number of bidders and for any number of bidders we give polynomial time algorithms with approximation factors arbitrarily close to 3 2

international knowledge diffusion and home bias effect do uspto and epo patent citations tell the same story this paper estimates the international diffusion of technical knowledge using patent citations we control for self citations and for procedural differences between patent offices using equivalent patents we find that 1 there are clear biases in patent examination processes that generate citations in the two offices 2 at the epo there is a strong localization effect at the country level and the size is comparable to that found at the uspto 3 technological fields have different properties of diffusion in the two patent offices that do not depend on a patent office bias 4 using epo data the us is not the leading country in terms of citations made and received as occurs at the uspto

multiproduct nonlinear pricing typically work on mechanism design has assumed that all private information can be captured in a single scalar variable this paper explores one way in which this assumption can be relaxed in the context of the multiproduct nonlinear pricing problem it is shown that the firm will choose to exclude some low value consumers from all markets a class of cases that allow explicit solution is derived by making use of a multivariate form of integration by parts in such cases the optimal tariff is cost based

preemptive patenting and the persistence of monopoly this article takes a different tack and inquires whether institutions such as the patent system create opportunities for firms with monopoly power to maintain their monopoly power the results apply to other situations such as brand identification spatial location and capacity expansion which share the characteristic that early or preemptive actions may lower the returns to potential competitors

the elixir or burden of youth exploring differences in innovation between start ups and established firms despite the widely acknowledged role of start ups in economic development little is known about their innovative activities compared with those of established firms drawing on a sample of 12 209 uk firms we differentiate between services and manufacturing firms and using a matching estimator approach demonstrate that start ups differ significantly from established firms in their innovation activities we find that in services being a start up increases the likelihood of product innovations however in manufacturing we find no significant differences in the likelihood of product innovation between start ups and established firms when examining the returns to innovation we find that start ups have a significant advantage both in services and in manufacturing we explore the implications of these results for theory and policy

bundling and optimal auctions of multiple products we study the optimal i e revenue maximizing auction of multiple products we make three major points first we extend the relationship between price discrimination and optimal auctions from the single product case to the multiple product case a monopolist setting prices for multiple products may offer discounts on purchases of bundles of products similarly the optimal auction of multiple products facilitates price discrimination by allocating products inefficiently to customers who are willing to purchase both products second we demonstrate that optimal auctions are qualitatively distinct from monopoly sales of multiple products because of uncertainty about the values of other consumers two products are bundled probabilistically in an optimal auction for a customer who is willing to buy both of them a customer may then receive a discount on a lower valued product without receiving a higher valued product third we show that in an optimal auction of two products the allocation of one product may vary with the amount of competition for the other product

on the shape of the world production possibility frontier with three goods and two primary factors with and without capital mobility recently there have been many articles discussing whether it is possible for two trading countries to specialize only incompletely when labor is immobile while capital is perfectly mobile between two countries kemp 1966 pioneered this topic followed by jones 1967 and inada kemp 1969 chipman 1971 showed that based on classical assumptions two traded goods two primary factors with labor immobile but capital freely mobile neoclassical technologies and perfect competition the world production possibility frontier i e the efficient set of world production with complete diversification contains a flat segment under certain conditions uekawa 1972 furthered his results by investigating some sufficient conditions for the existence of such a flat segment of the world production possibility frontier p p f with complete diversification the aim of this paper is to investigate the shape of the world p p f when there are three goods instead of two and two primary factors with labor immobile and under alternative assumptions concerning capital mobility the other assumptions remain classical neoclassical production functions fixed factor supply and perfect competition in product markets as well as in factor markets we first show that when production technologies are different and without capital mobility if the world p p f with complete diversification exists then in general it is flat next we investigate some sufficient conditions for the existence as well as non existence of such a world p p f then assuming that capital is mobile we show that if there is a good whose technology is the same between countries and is produced by both countries then the wage rate as well as rental price of capital is equalized between countries further assuming that capital is mobile if the technology of at least one good is different then the world p p f with complete diversification does not exist in general lastly we show that assuming the technologies of all goods are different 1 if three goods are produced in the home country and two goods are in the foreign country the world p p f is a part of a tangent developable surface without capital mobility 2 the world p p f is flat with capital mobility 3 if each country produces two goods such that the world as a whole produces three distinct goods then the world p p f is strictly concave toward the origin without capital mobility and 4 the world p p f is a part of a tangent developable surface with capital mobility

patterns of innovation and organizational demography in emerging sustainable fields an analysis of the chemical sector this paper examines the patterns of environmental innovation in the chemical sector and focuses in particular on detecting whether the rise of sustainable chemistry technologies sct has stimulated the emergence of new organizations this question is important to assess the extent to which sct are sustaining the technological advantage of industry incumbents or are creating opportunities for new firms aspiring to develop radically new environmental innovations we found that sct still represent a relatively low proportion of chemical technologies and that they have not stimulated in a significant way the emergence of new firms however the importance of new firms has grown in the last 20 years and their technologies seem to have a higher potential of radicalness than incumbents technologies this indicates that although incumbents advantage remains strong a small group of young firms has started to weaken such advantage moreover the important role played by research organizations in generating sct may signal that technological opportunities are expanding and that some governments in particular the us government are committed to develop sct these results suggest that if supported by effective policies technological ferment in the field which at the present appears still limited has a potential of growth

entry exit and diffusion with learning by doing early entry has the advantage of higher revenues per unit of output early on late entry has the benefit of learning from the experience of earlier entrants and hence lower production costs the advantages are balanced off in a continuous time perfect foresight equilibrium competition generates s shaped diffusion and staggered entry and exit a monopolist will innovate less than a competitive industry but the innovation that he does do he will do sooner copyright 1989 by american economic association

sectoral systems of innovation and production the concept sectoral system of innovation and production provides a multidimensional integrated and dynamic view of sectors it is proposed that a sectoral system is a set of products and the set of agents carrying out market and non market interactions for the creation production and sale of those products a sectoral systems has a specific knowledge base technologies inputs and demand agents are individuals and organizations at various levels of aggregation they interact through processes of communication exchange co operation competition and command and these interactions are shaped by institutions a sectoral system undergoes change and transformation through the co evolution of its various elements 2002 elsevier science b v all rights reserved

on discrimination in auctions with endogenous entry abstract when entry is exogenous strong buyers should be discriminated against weak buyers to maximize revenues myerson 1981 when entry is endogenous so that entrants expected payoffs do not depend on the proposed mechanism optimal discrimination takes a completely different form the revenue maximizing equilibrium requires that there should be no discrimination with respect to entrants irrespective of their ex ante characteristics besides those buyers who always participate should be discriminated against entrants independently of their strength these predictions are independent of the equilibrium selection when the number of potential entrants grows large the optimality of first price auctions is also discussed jel d44 h57

bundling decisions by a multiproduct monopolist with incomplete information this paper analyzes bundling decisions of a rnultiproduct monopolist facing uncertain demand the monopolist sells his products using an auction mechanism and the market is analyzed as a game with incomplete information in which the buyers as well as the seller are strategic agents with a small number of buyers a profit maximizing seller will bundle all his output this makes buyers uniformly worse off compared to the case where the same monopolist does not bundle in the sense that any buyer is worse off regardless of his demand for the monopolist s outputs with a larger number of buyers the seller will have a tendency to unbundle his output and high demand buyers are worse off than they would be if the monopolist bundled his output low demand buyers on the other hand are always better off when the monopolist unbundles his output regardless of the number of competing buyers despite the fact that high demand buyers are the typical purchasers of the monopolist s output the net effect of increasing the number of buyers is greater market efficiency since bundling creates market inefficiencies both ex post and ex ante

dominant strategy implementation of bayesian incentive compatible allocation rules abstract a large literature on incentive mechanisms represents incentive constraints by the requirement that truthful reporting be a bayesian equilibrium this paper identifies mechanism design problems for which there is no loss in replacing bayesian incentive compatibility by the stronger requirement of dominant strategies we identify contexts where it is possible to change the transfer payments of an optimal bayesian mechanism so as to create dominant strategies and yet leave every participant s expected utility unchanged we also address the issue of multiple equilibria and unique implementation contexts where these results apply include auctions bilateral bargaining procurement contracting and intrafirm resource allocation

is flexible labour good for innovation evidence from firm level data whether the use of flexible workers is damaging to innovation or not depends on the dominant innovation regime in a sector in sectors with a routinised innovation regime high shares of low paid temporary workers have a negative impact on the probability that firms invest in r d in sectors that tend towards a garage business regime however flexibility has no impact the two innovation regimes differ in the nature of their knowledge base reliance on generally available knowledge or dependence on a firm s historically accumulated knowledge base innovation in the latter regime benefits from longer job durations our results are consistent with findings in macro level studies that coordinated market economies with rigid labour markets have higher labour productivity gains than liberalised market economies

multiproduct monopoly commodity bundling and correlation of values through what selling strategy can a multiproduct monopolist maximize his profits when his knowledge about individual consumers preferences is limited one possibility extensively studied in the context of a single good monopoly is to use quantity dependent pricing as a means of discriminating among customers with differing tastes see for example oi 1971 and maskin and riley 1984 an alternative technique for price discrimination first suggested by stigler 1968 and analyzed further by adams and yellen 1976 is for the monopolist to package two or more products in bundles rather than selling them separately through a series of examples adams and yellen illustrate that bundling can serve as a useful price discrimination device even when all consumers willingnesses to pay for each of the goods individually are unaffected by whether they are also consuming the other product a typical example is illustrated in figure i adapted from figure iv in adams and yellen where there are two goods three consumers ab c who consume at most one unit of each good with reservation values for each good that are independent of whether the other good is consumed and zero costs of production there a bundle offered at a price of 100 fully extracts all potential surplus which would be impossible pricing the goods independently unfortunately though these authors do not provide any general characterization of the circumstances in which bundling is actually a multiproduct monopolist s optimal strategy their examples however such as figure i create the impression that the profitable use of bundling

schumpeterian dynamics part ii technological progress firm growth and economic selection abstract business firms strive for survival and growth they innovate in order to grow they imitate in order to survive the purpose of this paper the second in the series on schumpeterian dynamics is to construct a simple mathematical model which is capable of studying the evolution of an industry s state of technology as a dynamic outcome of the interactions among innovation imitation and capacity growth at the micro level of firms the doctrine of economic selection insists by means of the analogy to the biological theory of natural selection that only the most efficient firms will survive the long run competitive struggle for capacity growth indeed if neither innovation nor imitation is possible for the firm a firm or a group of firms which is lucky enough to start with the most efficient technology will outgrow all the other firms in the long run once however the possibility of technological imitation is allowed for the firms the industry will settle down to a static equilibrium of perfect technological knowledge not by the success of the most efficient firms in their striving for the higher growth rate but by the success of the less efficient in their effort to imitate the others the blind force of economic selection is thus outwitted by the human force of imitative activities finally when firms are allowed to innovate in their technology the selective force of market competition is no longer capable of weeding out the less fit even in the long run indeed it is shown in the present paper that the dynamic interplay of the processes of innovation imitation and growth will keep the industry s state of technology from settling down to the static equilibrium but reproduce in the long run a relative dispersion of efficiencies across firms in a statistically balanced form

schumpeterian patterns of innovation are technology specific this paper examines the patterns of innovative activities at the technological and country levels using patent data for 49 technological classes in six countries usa japan germany france united kingdom and italy it is shown that the patterns of innovative activities differ systematically across technological classes but are remarkably similar across countries for each technological class in particular two groups of technological classes are identified schumpeter mark i and schumpeter mark ii in these two groups innovative activities are structured and organized in different ways the first represents a widening pattern concentration of innovative activities is low innovators are of small economic size stability in the ranking of innovators is low and entry of new innovators is high the second represents a deepening pattern concentration of innovative activities is higher than in the first group innovators are of larger economic size stability in the ranking of innovators is greater and entry is lower the former group comprises mechanical technologies and traditional sectors while the latter includes chemicals and electronics this result suggests that technology related factors such as technological regimes defined in terms of conditions of opportunity appropriability cumulativeness and properties of the knowledge base play a major role in determining the specific pattern of innovative activities of a technological class across countries within these constraints country specific factors introduce differences across countries in the pattern of innovative activities for a specific technological class finally the relationships between the specific features of the patterns of innovative activities and international technological specialization are examined technological advantages appear in general to be linked to higher degrees of asymmetries among innovators higher stability of the ranking of innovators smaller economic size of the innovating firms and lower entry rates of new innovators these relationships however are different in the two groups of technological classes in schumpeter mark i widening technological classes international technological specialization is associated with relatively higher degrees of asymmetries among innovators and entry of new innovators as well as smaller firm size while in schumpeter ii deepening technological classes international technological specialization is linked to the existence of a stable but competitive core of persistent innovators

sectoral patterns of technological activity and export market share dynamics this paper focuses on a selected number of oecd countries and manufacturing sectors and shows the importance of sectoral diversity in the innovative process and in the relation between technology and world market share dynamics the econometric exercise confirms the importance of technological variables in the relation with world market shares in two ways first they are in general statistically significant second the taxonomy of technological classes in terms of r d intensity seems to be meaningful in disentangling the role played by sectoral diversity in the relation between embodied and disembodied investment and competitiveness sectoral diversity emerges in the statistical significance of the coefficients and in the time lag structure moreover the values of estimated r d parameters are correlated with the sectoral r d intensity

the persistence of innovative activities abstract this paper examines the persistence of innovative activities at the firm level in a comparative perspective a new data set is used composed of six panel data one for each of the following countries france germany italy uk japan and the usa for each country we use data on patent applications to the european patent office in the period 1978 1993 by 1200 1400 manufacturing firms using a transition probability matrix tpm approach we find evidence for the existence of persistence in innovative activities although it is not very high in the aggregate and it declines as time goes by however both great innovators and non innovators have a high probability to remain in their state and persistent innovators originate a disproportionate share of innovative activities in this sense persistence in innovative activities is quite strong these tendencies apply to all countries considered here although clear country specific properties are observed moreover there is heterogeneity also across industrial and size classification intersectoral differences are invariant across countries suggesting that persistence is at least partly a technology specific variable persistence tends to increase with firm size but the relationship between firms size and persistence is strongly country specific and it is not a simple one

optimal multi object auctions this paper analyses optimal auctions of several objects in the first model bidders have a binary distribution over their valuations for each object in which case the optimal auction is efficient the optimal auction takes one of two formats either objects are sold in independent auctions or a degree of bundling is introduced in the sense that the probability a bidder wins one object is increasing in her value for the other the format of the optimal auction may depend upon the number of bidders in the second model the restriction to binary distributions is relaxed and the optimal auction is then inefficient

sectors and the additionality effects of r d tax credits a cross country microeconometric analysis abstract do the additionality effects of r d tax credits vary across sectors the paper presents a micro econometric analysis of this question for three countries norway italy and france we use a panel of firm level data from three waves of the innovation surveys carried out in these countries for 2004 2006 and 2008 the study estimates input and output additionality effects of r d tax credits in each of these economies and it investigates how these effects differ across sectors characterized by different r d orientation and competition conditions the results point out that firms in industries with high r d orientation have on average higher propensity to apply to r d fiscal incentives schemes and stronger input and output additionality effects output additionality is found to differ among the three examined countries

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

industrial dynamics and economic geography capasso m stam e and cefis e industrial dynamics and economic geography regional studies how do industries emerge and evolve over space in this special issue the fields of industrial dynamics and economic geography are brought together in order to achieve a richer and more fundamental understanding of the organization of industries over time and space than each of these fields could do separately firm heterogeneity at the micro level and industry composition of a region at the macro level provide important elements in the explanation of industry emergence and evolution over space history and space matter in the evolution of industries this special issue shows how and why