hybrid r d we develop a model of r d collaboration in which individual firms carry out in house research on core activities and undertake bilateral joint projects on non core activities with other firms we develop conditions on the profit functions of the firm under which r d investments in different projects of a firm are complementary we show that this condition is met by standard price and quantity setting oligopoly models we then study the relation between the number of joint projects and investments and profits in this context we identify a second aspect of complementarity equilibrium investments in in house as well as in each joint project are increasing in the number of projects however we find that an increase in number of joint projects of all firms lowers collective profits suggesting the presence of excessive incentives for conducting research

co2 emissions and income dynamics what does the global evidence tell us this paper analyzes the co evolution of two major determinants of social welfare namely income and carbon emissions in particular by using a distribution dynamics approach based on markov chains we investigate the shape and behavior of the joint distribution of per capita income and carbon dioxide emissions we arrive at several interesting conclusions especially in the context of international negotiations on climate change first evidence does not support theoretical models predicting the existence of a poverty environment trap specifically in the long run two main groups of countries will emerge poor versus polluting countries second the typical development path leads initially to high emission levels and subsequently to high income third the convergence process towards the stationary distribution is very slow finally for carbon emissions whenever it is observed the environmental kuznets curve seems to be only a transitory phenomenon

environmental degradation and real per capita output new evidence at the global level grouping countries by income levels abstract the objective of this research is to examine the relationship between real per capita output and carbon dioxide emissions both globally and by groups of countries we used panel data from 151 countries for the period 1980 2016 the countries are classified according to income levels using the world bank atlas method the argument behind this classification is that the strength of the relationship between the two variables differs according to the income levels of countries based on the theoretical framework of the kuznets environmental curve we found that there is a strong u shaped relationship between the two variables in middle high and low income countries the hypothesis of the kuznets environmental curve holds true in high income and middle high income countries the inclusion of additional covariants shows that urbanization has a positive and significant relationship with carbon dioxide emissions middle high and middle low income countries energy consumption and manufacturing have a positive and statistically significant relationship with carbon dioxide emissions in all the groups of countries a possible implication of economic policy derived from our research is that incentives to production should focus on activities that use environmentally friendly technologies to limit the irreversible damage caused by contamination

pollution control and the ramsey problem pollution is an inevitable by product of production and is only gradually dissolved by the environment it can be reduced by producing less and by cleaning up the environment but neither occur when they are left to the market cleaning activities and the optimal emission charges increase with the stock of pollutants when one allows for pollution of the environment in the classical ramsey problem the capital stock is less than in the market outcome and a fortiori less than under the golden rule the analysis distinguishes between stock and flow externalities arising from pollution an increase in impatience can lead to more capital accumulation even though this leaves less room for current consumption

information gathering through alliances abstract the effect of a firm s uncertainty regarding technological development on the formation of alliances is examined and it is shown that this uncertainty is positively related to the number of alliances however higher uncertainty also makes the firm less likely to ally with others if the collected information is redundant the higher the similarity between the technological regimes of potential alliance partners the lower the incentive to ally also direct ties are preferred to indirect ones if uncertainty is high since direct ties yield more accurate information than indirect ties

complementarity and external linkages the strategies of the large firms in biotechnology in biotechnology large firms enter into different kinds of linkages with universities and small medium sized research intensive firms we test the hypothesis that the strategies of external linkage of the large firms with other parties are complementary to one another we show that if any two strategies are complementary i e undertaking more of one strategy raises the marginal value of the other then they are positively correlated using data for a sample large us european and japanese chemical and pharmaceutical producers we find that the strategies above are positively correlated even after controlling for firm specific characteristics

a tale of two collectives sulphur versus nitrogen oxides emission reduction in europe a theoretical model of emission reductions is specified that accounts for voluntary and non voluntary behaviour regarding the adherence to the helsinki and sofia protocols which mandated emission reductions for sulphur s and nitrogen oxides nox respectively from this model we derive an econometric specification for the demand for emission reductions that adjusts for the spatial dispersion of the pollutant when tested for 25 european nations the model performs well for sulphur cutbacks less satisfying results are obtained for nox because the model s assumption of a unitary actor at the national level is less descriptive collective action considerations indicate that sulphur emissions are easier to control than those of nox

constrained school choice an experimental study 31 pages 18 tables jel classification c72 c78 d78 i20 trabajo publicado como articulo en american economic review 100 4 1860 1874 2010 http dx doi org 10 1257 aer 100 4 1860

complementarities of innovation activities an empirical analysis of the german manufacturing sector abstract innovation strategies in manufacturing often involve internal rd it is based on data from the german part of the community innovation survey cis 3 the results provide evidence for significant complementarities between internal r d and r d cooperation but cast doubt on the complementarity of internal and contracted r d since a productivity effect on firms patenting probability or sales with new products cannot be found

innovation complementarity and scale of production we present an econometrically feasible model that uses the information contained in the innovation profile of each firm to test for the existence of complementarity among production and innovation strategies our approach is able to distinguish between complementarity and correlation induced by unobserved heterogeneity we apply the model to analyze the spanish ceramic tile industry where the adoption of the single firing furnace in the 1980 s facilitated the introduction of new product designs as well as opening new ways of organizing production our econometric results show that there is significant complementarity between product and process innovation small firms tend to be more innovative overall

substitutes and stability for matching with contracts we consider the matching problem with contracts of hatfield and milgrom 2005 and we introduce new concepts of bilateral and unilateral substitutes we show that bilateral substitutes is a sucient condition for the existence of a stable allocation in this framework however the set of stable allocations does not form a lattice under this condition and there does not necessarily exist a doctor optimal stable allocation under a slightly stronger condition unilateral substitutes the set of stable allocations still does not necessarily form a lattice with respect to doctors preferences but there does exist a doctor optimal stable allocation and other key results such as incentive compatibility and the rural hospitals theorem are recovered

networks of innovators a synthesis of research issues abstract this paper will first summarise some key findings of empirical research in the 1960s on the role of external sources of scientific technical and market information in successful innovation by business firms this work demonstrated unambiguously the vital importance of external information networks and of collaboration with users during the development of new products and processes moreover the dilemmas of cooperative research in competitive industries were recognised and studied long ago 35 62 76 what then is new about the present wave of interest in networks of innovators are there new forms of organisation or new technologies or new policies which justify renewed research efforts since they go beyond those developments already analysed in earlier empirical and theoretical work section 2 reviews the evidence of new developments in the 1980s in industrial networks regional networks and government sponsored innovative activities it shows that there has indeed been a major upsurge of formal and semi formal flexible networks in the 1980s including some new types of network it also shows that some older forms of research cooperation have been modified and transformed the papers at montreal largely concentrated on the role of regional supplier networks which are a good example of such new wine in old bottles this paper attempts to locate the regional network discussion within a wider context of new developments in networking section 3 discusses the causes of these new developments and whether they are likely to remain a characteristic of national and international innovation systems for a long time to come or prove to be a temporary upsurge to be overtaken later by a wave of take overs and vertical integration finally section 4 sums up some of the other key issues which require further research and debate and the implications for social science theory

testing for convergence in carbon dioxide emissions using a bayesian robust structural model we address international convergence in carbon dioxide emissions per capita and per value added derived from emission inventories based on production and consumption patterns we propose a bayesian structural model that accounts for heteroscedasticity and endogeneity between emissions and economic growth and tests for the existence of group specific convergence via shrinkage priors we find evidence for country specific conditional convergence in all emission inventories implying a half life of 2 7 3 1 years for production based emissions and 3 6 4 7 years for consumption based emissions when testing for global convergence without allowing for individual specific convergence paths the half life of hbox co 2 per capita increases to 15 26 years whereas emission intensities show a half life of 44 45 years our results highlight the current incompatibility between emission targets and economic growth and the need for faster diffusion of green technologies moreover there is no evidence for specific convergence dynamics in the european union the oecd or the countries that are subject to binding emission constraints specified in the kyoto protocol the institutional frameworks implemented in industrialized countries did not induce faster convergence among developed economies

broadening the market design approach to school choice school choice refers to policies that allow parents preferences to be an input to the decision of which school a student will attend a rich body of research has developed over the past 10 15 years to study mechanisms that implement school choice this literature has mostly taken the inputs of school choice preferences priorities and capacities as exogenous more recently researchers have sought to embed the school choice problem into its wider context thereby broadening the scope of market design questions and enriching the analysis this article discusses current school choice policy issues in light of this recent literature and outlines remaining open questions

is there complementarity or substitutability between internal and external r d strategies abstract the various strands of extant empirical research are inconclusive about the complementarity or substitutability between different innovation mechanisms such as internal and external r d using a panel sample of 83 incumbent pharmaceutical firms covering the period 1986 2000 our empirical analysis suggests that instead of a clear cut answer to the question of whether internal and external r d are complementary or substitutive innovation activities there appears to be a contingent relationship between internal and external r d strategies in shaping a firm s innovative output the results from our study indicate that the level of in house r d investments which is characterized by decreasing marginal returns is a contingency variable that critically influences the association between internal and external r d strategies in particular internal r d and external r d through either r d alliances or r d acquisitions are complementary innovation activities at higher levels of in house r d investments whereas at lower levels of in house r d efforts internal and external r d turn out to be substitutive strategic options

does public scientific research complement private investment in research and development in the pharmaceutical industry abstract this paper analyzes how pharmaceutical research and development r d investment responds to publicly supported biomedical research performed mainly at universities and nonprofit institutions new microlevel data on investment by the u s national institutes of health allow measures of public basic and clinical research in seven medical classes to be included in a distributed lag model explaining pharmaceutical r d investment using a panel of medical classes observed over 18 years the analysis found strong evidence that public basic and clinical research are complementary to pharmaceutical r d investment and thereby stimulate private industry investment however differences in the relevance and degree of scientific and market uncertainty between basic and clinical research lead to differences in the magnitude and timing of the pharmaceutical investment response

dynamic complementarities in innovation strategies using a panel of irish manufacturing plants over the period 1991 2008 we test for dynamic complementarities in the joint use of internal r d and external knowledge sources we find little evidence either from considering successive cross sectional waves of comparable surveys or in terms of the strategy switch choices of specific plants that there has been a systematic move towards the joint use of internal and external knowledge in innovation we then test formally for the presence of complementarities in the joint use of internal r d and external innovation linkages in static terms we find no evidence of complementarity but in dynamic terms find evidence that strategy switches by individual plants towards a more open strategy are accompanied by increased innovation outputs

per capita carbon dioxide emissions convergence or divergence understanding and considering the distribution of per capita carbon dioxide co2 emissions is important in designing international climate change proposals and incentives for participation i evaluate historic international emissions distributions and forecast future distributions to assess whether per capita emissions have been converging or will converge i find evidence of convergence among 23 member countries of the organisation for economic co operation and development oecd whereas emissions appear to be diverging for an 88 country global sample over 1960 2000 forecasts based on a markov chain transition matrix provide little evidence of future emissions convergence and indicate that emissions may diverge in the near term i also review the shortcomings of environmental kuznets curve regressions and structural models in characterizing future emissions distributions

convergence in carbon dioxide emissions among industrialised countries revisited this paper examines the existence of stochastic and deterministic convergence of carbon dioxide co2 emissions in 23 countries over the period 1960 2002 for that purpose we conduct unit root testing by employing the recently developed panel stationarity test of carrion i silvestre et al carrion i silvestre j l del barrio castro t lopez bazo e 2005 breaking the panels an application to the gdp per capita econometrics journal 8 159 175 which assumes a highly flexible trend function by incorporating an unknown number of structural breaks we accommodate general forms of cross sectional dependence as well as control for finite sample bias through bootstrap methods overall our analysis provides strong evidence supporting both stochastic and deterministic convergence in co2 emissions thus confirming strazicich and list strazicich m c list j a 2003 are co2 emission levels converging among industrial countries environmental and resource economics 24 263 271 and westerlund and basher westerlund j basher s a 2007 testing for convergence in carbon dioxide emissions using a century of panel data environmental and resource economics forthcoming findings of convergence

do voluntary international environmental agreements work abstract we consider the effects of international environmental agreements using the 1988 sofia protocol on the reduction of nitrogen oxides panel data on 23 european countries for the period 1985 96 is used to evaluate the impact on emissions by dividing countries into participants and non participants that is those that did and those that did not ratify the sofia protocol using a difference in difference estimator and controlling for country specific variables we find that signing the treaty had a significant positive impact on emission reduction the estimated yearly reduction in emissions is approximately 2 1 greater than it would have been without the sofia protocol

the strategic alliance of the biotechnology firm this article applies the relevant theories of firm organization and inter firm relationships in the high tech environment to explain the institutional reasons that firms choose between internal or external approaches particularly this study tries to understand to what extent and in what way strategic alliances have impacts on individual firms organizational structure financial structure and firms activities also it tries to find out what type of firms tend to benefit most from alliances and thus use more inter firm agreements the theoretical findings are that due to liquidity constraint and asymmetric information reasons young research intensive firms need to use more alliances to survive in the fast changing high technology industry the empirical analysis employs 3 year panel data and finds that the results are consistent with the theoretical predictions

stable coalition structures with open membership and asymmetric firms i study games of coalition formation with open membership where firms form associations in order to decrease their costs before competing on the market according to previous analyses only the grand coalition forms at the nash equilibrium of such games i show that this result hinges on the assumption of symmetric firms i therefore introduce asymmetric firms in a game where only two associations can form i demonstrate that there exists a coalition proof nash equilibrium coalition structure in this game and that when the equilibrium involves two associations all the members of an association have a higher taste for this association than all nonmembers do journal of economic literature classification numbers c70 c72 l13

patents as indicators of corporate technological strength abstract quantitative indicators of the technological strengths of individual companies would be an important addition to the financial and economic data used in competitor assessments merger acquisition analyses investment decisions and corporate planning and management this paper examines the links between corporate patent and patent citation data and several other indicators of corporate performance changes in sales and profits research and development budgets scientific productivity and expert opinions of company technological strength the study covers 17 us pharmaceutical companies for which financial r d and expert opinion data were readily available for these pharmaceutical companies it was found that the patent data are an excellent indicator of overall corporate technological strength with 1 an overall correlation of 0 82 between expert opinion of pharmaceutical company technical strength and the number of us patents granted to the companies and 2 correlations in the general range of 0 6 to 0 9 between increases in company profits and sales and both patent citation frequency and concentration of company patents within a few patent classes

have air pollutant emissions converged among u s regions evidence from unit root tests previous studies of income distribution have found evidence indicating that incomes across u s regions have converged supporting the prediction of the neoclassical growth model a potential shortcoming in these studies is that only one measure of well being is considered a measure of wealth linked to incomes or production this paper examines whether income convergence was accompanied by air pollutant emission convergence results from unit root tests provide some evidence that indicators of environmental quality have converged across u s regions during the 1929 1994 period

modelling the innovation value chain innovation events the introduction of new products or processes represent the end of a process of knowledge sourcing and transformation they also represent the beginning of a process of exploitation which may result in an improvement in the performance of the innovating business this recursive process of knowledge sourcing transformation and exploitation comprises the innovation value chain modelling the innovation value chain for a large group of manufacturing firms in ireland and northern ireland highlights the drivers of innovation productivity and firm growth in terms of knowledge sourcing we find strong complementarity between horizontal forwards backwards public and internal knowledge sourcing activities each of these forms of knowledge sourcing also makes a positive contribution to innovation in both products and processes although public knowledge sources have only an indirect effect on innovation outputs in the exploitation phase innovation in both products and processes contribute positively tocompany growth with product innovation having a short term disruption effect on labour productivity modelling the complete innovation value chain highlights the structure and complexity of the process of translating knowledge into business value and emphasises the role of skills capital investment and firms other resources in the value creation process

carbon dioxide emissions and economic growth an assessment based on production and consumption emission inventories working with a new dataset on comparable global co2 production and consumption inventories spanning the 1997 2011 period we investigate the relationship between real gross domestic product gdp per capita and co2 emissions per capita associated with both production and consumption activities by including linkages between production based emissions in one country and final consumption in another via cross border value chains we focus on the entire carbon chain we estimate polynomial and threshold models accounting for reverse causality and identification problems we find that the income elasticity for both inventories is regime dependent and reflects small carbon efficiency gains from economic development carbon footprints show larger income elasticities while national policy instruments targeting production can clearly be circumvented by carbon embodied in intermediate trade this implies problems of environmental sustainability that may require consumption based policy instruments

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

measuring r d in small firms how much are we missing the oecd surveys on r d are considerably biased towards underestimating r d in small firms this conclusion is derived from the author s comparison between the official dutch r d survey and the findings of his own survey among 3000 firms although being based on dutch observations only the author s considerations have an impact on other oecd countries since the official dutch r d survey is fully compatible with those in other countries the findings call into question the results from a number of empirical studies bearing on subjects such as market structure and r d firm size and r d or r d and growth

reserve design unintended consequences and the demise of boston s walk zones we show that in the presence of admissions reserves the effect of the precedence order i e the order in which different types of seats are filled is comparable to the effect of adjusting reser

how do governments actually use environmental taxes this paper empirically examines how governments actually use environmental taxes by looking to what extent their resort to this type of taxation is consistent with three alternative interpretation

il legal assignments in school choice in public school choice students with strict preferences are assigned to schools schools are endowed with priorities over students incorporating constraints from different applications priorities are often modelled as choice functions over sets of students it has been argued that the most desirable criterion for an assignment is stability there should not exist any blocking pair no student shall prefer some school to her assigned school and have higher priority than some student who got into that school or the school has an empty seat we propose a blocking notion where in addition it must be possible to assign the student to her preferred school we then define the following stability criterion for a set of assignments a set of assignments is legal if and only if any assignment outside the set is blocked with some assignment in the set and no two assignments inside the set block each other we show that under very basic conditions on priorities there always exists a unique legal set of assignments and that this set has a structure common to the set of stable assignments i it is a lattice and ii it satisfies the rural hospitals theorem the student optimal legal assignment is efficient and provides a solution for the conflict between stability and efficiency

the environmental kuznets curve tipping points uncertainty and weak identification we consider an empirical estimation of the environmental kuznets curve ekc for carbon dioxide and sulphur with a focus on confidence set estimation of the tipping point various econometric parametric and nonparametric methods are considered reflecting the implications of persistence endogeneity the necessity of breaking down our panel regionally trends and temporal instability and the small number of countries within each panel in particular we propose a parametric inference method that corrects for potential weak identification of the tipping point weak identification may occur if the true ekc is linear while a quadratic income term is nevertheless imposed into the estimated equation relevant literature to date confirms that non linearity of the ekc is indeed not granted which provides the motivation for our work we also propose a non parametric counterpart to the parametric confidence set for sensitivity analysis viewed collectively our results confirm an inverted u shaped ekc in the oecd countries but generally not elsewhere although a local pollutant analysis suggests favorable exceptions beyond the oecd our measures of uncertainty confirm that it is difficult to identify economically plausible tipping points policy relevant estimates of the tipping point can nevertheless be recovered from a local pollutant long run or non parametric perspective

leveling the playing field sincere and sophisticated players in the boston mechanism empirical and experimental evidence suggests different levels of sophistication among families in the boston public school student assignment plan we analyze the preference revelation game induced by the boston mechanism with sincere players who report their true preferences and sophisticated players who play a best response we characterize the set of nash equilibrium outcomes as the set of stable matchings of a modified economy where sincere students lose priority to sophisticated students any sophisticated student weakly prefers her assignment under the pareto dominant nash equilibrium of the boston mechanism to her assignment under the recently adopted student optimal stable mechanism jel d82 i21

is there convergence in per capita so2 emissions in china an empirical study using city level panel data abstract as china s economy has grown rapidly in recent years china s environmental pollution has become increasingly significant among all the traditional pollutants sulfur dioxide has been monitored by the chinese government since the 1990s in this study china s city level panel data between 2002 and 2012 are utilized to investigate the existence of convergence in per capita sulfur dioxide emissions across chinese cities the conventional estimation methods for convergence suffer from an endogeneity problem and therefore produce biased results to address the endogeneity problem and allow for dynamics dynamic panel data estimators are utilized and the static estimation results are conducted as a robustness check in addition the influential factors for convergence are examined the empirical results indicate that in the chosen sample period there were absolute and conditional convergences in per capita sulfur dioxide emissions across cities within the whole nation as well as in the eastern western and central regions of china because per capita gross domestic product and the ratio of secondary industry to gross domestic product are both positively related with per capita sulfur dioxide emissions higher income per capita and greater importance of the secondary industry would cause the convergence speed to be lower therefore the most straightforward policy implication for the empirical results is that the policies for controlling sulfur dioxide emissions should be regionally differentiated for cities with high sulfur dioxide emissions per capita the regulation could be tight as the emissions would decrease faster because convergence exists however for cities with low sulfur dioxide emissions per capita the target for reducing emissions should not be excessively aggressive

optimal allocation without money an engineering approach we study the allocation of heterogeneous services to agents with incomplete information and without monetary transfers agents have private multidimensional utilities over services drawn from commonly known priors the social planner s goal is to maximize a potentially complex public objective for tractability we take an engineering approach in which we solve a large market approximation and convert the solution into a feasible finite market mechanism that still yields good results we apply this framework to real data from boston to design a mechanism that assigns students to public schools in order to maximize a linear combination of utilitarian and max min welfare subject to capacity and transportation constraints we show how to optimally solve a large market formulation with more than 868 types of students and 77 schools and we translate the solution into a finite market mechanism that significantly outperforms the baseline plan chosen by the city in terms of efficiency equity and predic

understanding the energy gdp elasticity a sectoral approach abstract this paper uses per capita data for 132 countries over 1960 2010 to estimate elasticities of sectoral energy use with respect to national gross domestic product gdp we estimate models in both levels and growth rates and use our estimates to sectorally decompose the aggregate energy gdp elasticity our estimates show that residential energy use is very inelastic to gdp if primary solid biofuels are counted in energy use tallies especially at low income levels residential use of electricity is more tightly linked to gdp as is energy use by the transportation industrial and services sectors agriculture typically accounts for a small share of energy use and has a modest energy gdp elasticity the aggregate energy gdp elasticity tends to be higher for countries at higher income levels in large part because traditional use of primary solid biofuels is less important gasoline prices winter temperature population and land area are among other factors influencing sectoral energy use

in search of complementarity in innovation strategy internal r d and external knowledge acquisition empirical research on complementarity between organizational design decisions has traditionally focused on the question of existence of complementarity in this paper we take a broader approach to the issue combining a productivity and an adoption approach while including a search for contextual variables in the firms strategy that affects complementarity analysis of contextual variables is not only interesting per se but also improves the productivity test for the existence of complementarity we use our empirical methodology to analyze complementarity between innovation activities internal research and development r d and external knowledge acquisition our results suggest that internal r d and external knowledge acquisition are complementary innovation activities but that the degree of complementarity is sensitive to other elements of the firms strategic environment we identify reliance on basic r dthe importance of universities and research centers as an information source for the innovation processas an important contextual variable affecting complementarity between internal and external innovation activities

matching with contracts we develop a model of matching with contracts which incorporates as special cases the college admissions problem the kelso crawford labor market matching model and ascending package auctions we introduce a new law of aggregate demand for the case of discrete heterogeneous workers and show that when workers are substitutes this law is satisfied by profit maximizing firms when workers are substitutes and the law is satisfied truthful reporting is a dominant strategy for workers in a worker offering auction matching algorithm we also parameterize a large class of preferences satisfying the two conditions

the oslo protocol on sulfur reduction the great leap forward the increasing number of international environmental agreements ieas and the fact that under some agreements emissions have been reduced beyond agreed targets are frequently viewed as success stories of international cooperation we argue that success can only be measured if abatement targets under an iea are compared with estimated abatement levels in the absence of a treaty and are evaluated in terms of costs and benefits we analyze the oslo protocol on sulfur reduction showing that this iea is not the great leap forward when compared with the calculated nash equilibrium and the social optimum however we also demonstrate that under the oslo protocol more ambitious targets could not have been realized due to strong free rider incentives

are co2 emission levels converging among industrial countries time paths of carbon dioxide emissions intwenty one industrial countries are examinedfrom 1960 1997 to test for stochastic andconditional convergence both panel unit roottests and cross section regressions areperformed overall we find significantevidence that co2 emissions haveconverged

capitalism as an engine of progress economists from marx to schumpeter have touted capitalism as an engine of technical progress but what kind of an engine is it what are its key components how does it work

effective incomplete contracts and milestones in market distant r d collaboration abstract r d outsourcing is often conducted during the early market distant stages of the innovation process however the main obstacle to this potentially efficient interfirm specialization is the high danger of moral hazard most organizational mechanisms fail to control that type of opportunism because of information asymmetries even ex post in the theory of incomplete contracts this problem is mitigated by assigning the control rights to the supplier to date empirical studies have mainly investigated the interfirm distribution of the control rights however we do not know yet which concrete control right is crucial with regard to supplier opportunism which is the decisive dependent variable our study addresses this research gap for the first time we extend the empirical focus from biotechnology and pharmaceutical firm alliances to a cross industry sample of 113 collaboration cases the results show the effectiveness of contracts that ex ante assign patent ownership rights to the supplier the findings are also relevant for management practice because the majority of practitioners do not use this contract type yet although there is no sign of an effective alternative

complementarities in innovation policy this paper develops a framework for testing discrete complementarities in innovation policy using european data on obstacles to innovation we propose a discrete test of supermodularity in innovation policy leading to a number of inequality constraints we apply our test to two types of innovation decisions to innovate or not and if so by how much we find that the evidence regarding the existence of complementarity in innovation policies depends on the phase of innovation that is targeted getting firms innovative or increasing their innovation intensity as well as on the particular pair of policies that is being considered the two phases of the innovation process i e the probability of becoming an innovator and the intensity of innovation are subject to different constraints interestingly there seems to be a need to adopt a package of policies to make firms innovate while a more targeted choice among policies is necessary to make them more innovative

convergence in co2 emissions a spatial economic analysis with cross country interactions abstract this research analyzes the evolution of co2 emissions per capita in a sample of 141 countries during the period 1970 2014 the study develops a spatially augmented green solow model by taking into consideration technological externalities and interdependence in the process of production which ultimately implies that co2 emissions in an economy are affected by the economic characteristics in neighboring countries the empirical model predicts convergence in co2 emissions among countries which is examined by means of modern dynamic spatial panel econometric techniques the multimodal distribution of the co2 emissions is consistent with the existence of three spatial clubs the space time dynamics of the three clubs are analyzed by means of the local directional moran scatterplot and spatial panel model with heterogeneous parameters our analysis reveals the hypothesis of spatial convergence clubs is more consistent with the data than the hypothesis of conditional convergence

firms motivations for cooperative r d an empirical analysis of spanish firms abstract the aim of this paper is to analyze the motives that have caused industrial firms to cooperate in r d there are many theoretical works devoted to the theme but few empirical studies have been carried out with large samples to analyze the factors which determine why firms cooperate in r d we first review the reasons offered by the literature to explain technological cooperation with this allowing us to determine the conceptual framework and to propose some hypotheses we test these hypotheses with a sample of 1652 spanish firms that have carried out r d activities the results obtained suggest that firms motivations for cooperative r d are the complexity of technology and the fact that innovation is costly and uncertain we find that in order to undertake cooperative r d it is necessary to have certain internal capacities in this area with our results being supported by the theory of absorptive capacity however and by contrast with the results presented in other works questions related to market access and search for opportunities do not appear to exert an influence over cooperative r d besides the large sized firms resort more to cooperation and the reasons for cooperative r d differ as between large and small sized firms

on responsiveness of top trading cycles mechanism to priority based affirmative action abstract in school choice priority based affirmative action favors minority students by means of promoting their priority ranking at schools this paper investigates the responsiveness of the top trading cycles mechanism to priority based affirmative action when schools priority structure satisfies a certain acyclicity condition when schools priority under the problem without affirmative action satisfies virtual homogeneity condition a weak responsiveness result is obtained

how to control controlled school choice we characterize choice rules for schools that regard students as substitutes while expressing preferences for a diverse student body the stable or fair assignment of students to schools requires the latter to regard the former as substitutes such a requirement is in conflict with the reality of schools preferences for diversity we show that the conflict can be useful in the sense that certain unique rules emerge from imposing both considerations we also provide welfare comparisons for students when different choice rules are employed

distribution dynamics of co2 emissions this paper uses nonparametric methods to examine the convergence in co2 emissions per capita on a sample of 100 countries for the period 1966 1996 industrial countries show a convergence pattern however there is little evidence of convergence for the whole sample

convergence of carbon dioxide performance across swedish industrial sectors an environmental index approach the overall objective of the paper is to analyze convergence of co2 emission intensity across manufacturing sectors in sweden our approach differs from previous work on carbon convergence in that

growth and pollution convergence theory and evidence stabilizing pollution levels in the long run is a pre requisite for sustainable growth we develop a neoclassical growth model with endogenous emission reduction predicting that along optimal sustainable paths pollution growth rates are i positively related to output growth scale effect and ii negatively related to emission levels defensive effect this dynamic law reduces to a convergence equation that is empirically tested for two major and regulated air pollutants sulfur oxides and nitrogen oxides with a panel of 25 european countries spanning the years 1980 2005 traditional parametric models are rejected by the data more flexible regression techniques confirm the existence of both the scale and the defensive effect supporting the model predictions

the role of knowledge in r d efficiency past research has recognized that both demand and capability influence the allocation of r d resources scholars have had an easier time getting a grip on demand than on capability while it has been recognized that knowledge is an important part of capability to date formalization of knowledge and its role in r d activity has been unsatisfactory this paper models the role of knowledge in r d various sources of such knowledge are considered the model throws a different light on analyses that employ a knowledge capital stock and also illuminates the dual private and public nature of technological knowledge

technological cooperative agreements and firm s r d intensity a note on causality relations abstract in this paper we apply a recently proposed model of vector autoregression for panel data to analyse the granger causality relationship between a firm s intramural r d intensity and technological cooperative agreements the analysis relies on a sample composed of 95 major us european and japanese firms in the semiconductor data processing and telecommunications industries observed during the period 1980 1986 decisions on interfirm technological collaborations are shown to cause a la granger decisions on internal r d investments and vice versa we thus suggest that in contrast with the methodological approaches followed by previous empirical works firms decisions concerning both intramural innovative effort and technological cooperation are endogenous and have to be jointly studied through a simultaneous two equation structural model