marshall s scale economies using panel data this paper estimates plant level production functions for machinery and high tech industries that allow for scale externalities from other plants in the same industry locally and from the scale or diversity of local economic activity outside the own industry the paper finds that the count of other own industry plants representing a count of local information spillover sources has strong productivity effects in high tech but not machinery industries single plant firms both benefit more from and generate greater external benefits than corporate plants given their greater reliance on external environments on dynamic externalities high tech single plant firms benefit also from the scale of past own industry activity i find little evidence of economies from the diversity or scale of local economic activity outside the own industry

variable returns to agglomeration and the effect of road traffic congestion abstract this paper investigates the links between returns to urban density productivity and road traffic congestion a generalised translog production inverse input demand function is estimated to test for the existence of variable returns to agglomeration in manufacturing construction and service industries two separate measures of urban density in which proximity is represented by straight line distance or by generalised cost are constructed and included in the translog to identify the effect of road traffic congestion the results show that for some sectors of the economy diminishing returns to urban density can set in causing the magnitude of agglomeration elasticity to fall as effective densities increase the generalised cost based measure of agglomeration produces higher elasticities because it captures both time and distance dimensions of density a comparison of spatial variance in estimates indicates that road traffic congestion plays an important role in explaining diminishing returns for the most highly urbanised locations

agglomeration economies and industrial decentralization the wage productivity trade offs abstract this paper examines the industrial location trade offs between the productivity advantages of the metropolitan center and the lower land and the labor costs in outlying regions within the state of sao paulo brazil the results indicate that while plant productivity is enhanced by the considerable agglomeration economies existing within metropolitan sao paulo firms must pay for these benefits in high wages and land costs offsetting labor cost savings can be achieved by locating in outlying regions the evidence presented in this paper suggests that market forces may lead eventually to a spontaneous decentralization of industry

marshall s versus jacobs externalities in firm innovation performance the case of french industry galliano d magrini m b and triboulet p marshall s versus jacobs externalities in firm innovation performance the case of french industry regional studies this paper analyses the influence of different types of spatial externalities related to the location of firms on their innovation performance and how those externalities combine in the territories with regard to the marshall jacobs dichotomy the originality of this study also lies in the consideration of a larger definition of the firm one that takes into account the location of all its units based on a dataset of french industrial firms and specific indicators to evaluate the specialization and or diversification of the employment zones the impacts of the spatial profile of the firm on its innovation performance are tested

geography industrial organization and agglomeration this paper makes two contributions to the empirical literature on agglomeration economies first the paper uses a unique and rich database in conjunction with mapping software to measure the geographic extent of agglomerative externalities previous papers have been forced to assume that agglomeration economies are club goods that operate at a metropolitan scale second the paper tests for the existence of organizational agglomeration economies of the kind studied qualitatively by saxenian 1994 this is a potentially important source of increasing returns that previous empirical work has not considered results indicate that localization economies attenuate rapidly and that industrial organization affects the benefits of agglomeration

spatial evolution of the computer industry in the usa abstract this paper examines the spatial evolution of computers across 317 metro areas in the usa since the introduction of the personal computer we start by examining the relative distribution of employment across cities examining how that distribution changes in 1977 1992 and how cities move through the distribution for computers transition matrices are stationary with the industry exhibiting no tendency to settle down nor any tendency of retrenchment during periods of national high tech employment decline there is no tendency of the relative size distribution of computer employment to collapse go bimodal etc overall computers exhibit some turbulence with dramatic big winners and losers among cities as well as persistence for some cities in employment shares in attracting or repelling an industry urban heterogeneity is important large well educated cities near san jose have a much greater chance of attracting high tech employment much lower mean first passage times moving up states and less chance of losing it in assessing the determinants of persistence in local employment patterns we examine sources of productivity growth we find strong evidence of significant dynamic own industry externalities for single plant firms and little evidence of urbanization jacobs knowledge type externalities corporate plants in computers seem to be self reliant and not really influenced by externalities

where does an industry locate abstract this paper presents an econometric model of industrial location and estimates the model for two industries in brazil based on a comprehensive data set the model predicts which cities will or will not have the industry and for these cities with the industry what the scale of operation will be the parameters estimated in a full information context represent the technology of production supply of entrepreneurs and equilibrating error in markets the results are strong and very suggestive and the explanatory power of the model is relatively high the results are used to simulate the impact of industry subsidies on locational patterns

a dynamic interregional theory of migration and population growth the authors attempt to bring the theory of regional amenity value determination together with a theoretical framework on migration to form a cohesive theoretical model they build on previous efforts to do this by introducing factors such as the housing market and determination of the equilibrium level of real full income the implied geographical focus is on the united states annotation

urban wages and labor market agglomeration abstract using the 5 public use micro sample of the 1990 u s census we find that observationally equivalent workers in the manufacturing sector earn higher wages when they are in urban labor markets that have a larger share of national or metropolitan employment in their same occupation and industry groups quantitatively the effect is large with an elasticity measured at the means of between 1 2 and 3 6 for these effects we interpret the willingness of firms to pay more for equivalent workers in dense markets as evidence of an agglomeration economy in urban labor

a theory of urban growth in an economy experiencing endogenous economic growth and exogenous population growth we explore two main themes how urbanization affects efficiency of the growth process and how growth affects patterns of urbanization localized information spillovers promote agglomeration and human capital accumulation fosters endogenous growth individual city sizes grow with local human capital accumulation and knowledge spillovers and city numbers generally increase which we demonstrate is consistent with empirical evidence we analyze whether local governments can successfully internalize local dynamic externalities in addition we explore how growth involves real income differences across city types and how urbanization can foster income inequality most nonagricultural production in developed countries occurs in metropolitan areas the underlying reasons why economic activity agglomerates into cities localized information and knowledge spillover also make cities the engines of economic growth in an we gratefully acknowledge support of the national science foundation grants sbr 9422440 and sbr9730142 for this research the work has benefited from conversations with harl ryder on the dynamics of the model and from comments by gilles duranton and participants in seminars at brown colorado and texas austin and a presentation at an isit seminar sponsored by the centre for economic policy research and the national bureau of economic research

intra metropolitan productivity variations of selected manufacturing and business service sectors what can we learn from los angeles this paper explores an empirical issue the extent to which access to various labour skills and other economic activity in los angeles can explain observed intra urban variations in productivity of selected manufacturing and business service sectors in addressing this issue an empirical model is developed based on traditional location theory and productivity methodologies the empirical results indicate that the influence of skilled labour access on firm productivity is stronger than the influence of access to other firms in the metropolitan area thus employment decentralisation is the rational response of firms to the residential choices of a skilled labour force the findings raise questions about the mobility of labour within metropolitan areas and the impact of policies that would improve the mobility of less skilled labour between central cities and the suburban employment centres

representing induced technological change in models for climate policy analysis induced technological change itc whereby the relative price effects of reducing greenhouse gas emissions stimulate innovation that mitigates the cost of abatement is both tantalizing to decision makers and challenging to represent in the computational economic and engineering models used to analyze climate change policy this overview reconciles the divergent views of technology and technological change within different types of models elucidates the theoretical underpinnings of itc introduces the reader to the techniques of their practical implementation and evaluates the implications for models results

does history matter only when it matters little the case of city industry location when will an industry subject to agglomeration economies move from an old high cost site to a new low cost site it is argued that history in the form of sunk costs resulting from the operation of many firms at a site creates a first mover disadvantage that can prevent relocation it is demonstrated that developers of industrial parks can partly overcome this inertia through discriminatory pricing of land over time and empirical evidence is provided that they actually engage in such behavior it is also shown that other aspects of developer land sale strategy can be a source of information on the nature of interfirm externalities

solow meets leontief economic growth and energy consumption abstract this paper proposes a methodology that integrates a growth model with an input output model to analyze the impacts of economic growth on the consumption of energy the integration between the models is carried out by calibrating the growth module which incorporates energetic inputs renewable and nonrenewable in the production function and implementing shocks by the supply side capital labor renewable and nonrenewable energy in the input output model this allows us to verify the pattern of energy consumption for each sector in the input output matrix we apply this methodology to study the energy consumption of eleven economic sectors in brazil using data from the brazilian national accounts and input output matrix ibge and the national energy report ben we conduct experiments involving changes in technological progress growth rate extraction and regeneration rates of both renewable and nonrenewable resources and population growth to analyze the impact of changes in the parameters of the model on the sectoral output growth rate and consequently on the consumption of energy in each economic sector

productivity and city size a critique of the evidence a critique of two leading articles in the productivity and city size literature results in revised estimates of the productivity advantages of large cities in particular extant estimates of the elasticity of productivity with city size are revised downward by over 100 percent for the manufacturing sector and about 25 percent for the entire urban economy after revision productivity advantages of larger cities are found to be much larger for the nonmanufacturing sector than for the manufacturing sector hence revitalization policies for large cities should be focused on nonmanufacturing sectors

accounting for quality issues with modeling the impact of r d on economic growth and carbon emissions in developing economies the literature on climate policy modeling has paid scant attention to the important role that r d is already playing in industrializing countries such as china where r d investments are targeting not only productivity improvements but also enhancements in the quality and variety of products we focus here on the effects of quality enhancing innovation on energy use and ghg emissions in developing countries we construct an analytical model to show that efficiency improving and quality enhancing r d have opposing influences on energy and emission intensities with the efficiency improving r d having an attenuating effect and quality enhancing r d having an amplifying effect we find that the balance of these opposing forces depends on the elasticity of upstream output with respect to efficiency improving r d the elasticity of downstream output with respect to upstream quality enhancing r d occurring upstream and the relative shares of emissions intensive inputs in the costs of production of upstream versus downstream industries we employ a computable general equilibrium cge simulation of the chinese economy to illustrate the difficulties that arise in incorporating these results into models for climate policy analysis and we offer a simple remedy

technological specialization and variety in urban invention o huallachain b and lee d s technological specialization and variety in urban invention regional studies urban economic theory distinguishes between knowledge spillovers that occur within specializations and those that cross technologies empirical analysis has sought to gauge their relative strength but the results are inconclusive metropolitan specialization and variety at different aggregation levels of a us patent classification system are assessed using theil s relative entropy index the results show that specialization and variety are not competing features of urban technological structure cities can have both the invention rate positively associates with specialization in diverse technologies the cross fertilization of ideas among skilled professionals with different expertise and the interaction between specialists of narrow fields of knowledge are both important in technological advance the most inventive cities have deep specializations in different technologies the results also sho

agglomeration economies as manifested in technical efficiency at the firm level abstract this paper makes an attempt to assess the significance of agglomeration economies in the case of two indian industries electrical machinery and cotton and cotton textiles using firm level data an efficiency index based on a statistical stochastic frontier model is generated to examine its relationship with external scale variable s a positive association between technical efficiency and city size is evident although after a certain threshold level city size works more as diseconomies than economies of scale undue emphasis on industrial dispersal may therefore lead to suboptimal utilisation of resources

urban agglomeration capital augmenting technology and labor market equilibrium abstract the objective of this paper is to measure urban productivity using japanese city based cross sectional data of 1980 the results of a labor demand ols regression analysis suggest two kinds of possible model specifications capital augmenting and demand supply equilibrium each model type is considered and the average effect of population density on labor productivity is shown to be 4 3 in the capital augmenting model and 8 0 in the equilibrium model

productivity growth in british manufacturing spatial variation in the role of scale economies technological growth and industrial structure this paper investigates the role of scale economies technological growth and industrial structure in creating spatial variation in manufacturing labour and total factor tfp productivity in britain separate estimates of a translog specification are presented for british manufacturing firms located in defined areas of the country over the period 1994 1998 the results show that tfp change due to scale economies and technological growth has been of much less important in influencing the output growth of manufacturing firms than input growth or industrial structure regarding the components of tfp technological growth has been the dominant force at play the analysis of average labour productivity identifies shifts to other factors of production and industrial structure as being the main determinants of change scale economies appear to have had a marginal role the results identify spatial patterns indicating that more favourable locational effects arise for firms in areas adjacent to large urban centre

a comment on two concepts of risk premia and certainty equivalents abstract the purpose of this paper is to examine alternative univariate definitions of the risk premium which are applicable in cases of moral hazard where a decision variable affects the risk premium an appealing definition is the maximum of the objective function under certainty minus the selling price of the risk the welfare significance of this risk premium is examined the competitive firm under price uncertainty serves to exemplify the results

route 128 the development of a regional high technology economy abstract a corner of massachusetts not far from boston s route 128 has become a world center of high technology hundreds of enterprises mainly in electronics based industries employ over 250 000 people 75 000 of whom were added between 1975 and 1980 enterprises founded after world war ii have spearheaded growth in the state with a rapid rate of new firm formation continuing through the 1970s this paper examines the state s high tech growth to determine what caused it to happen where it did and assess the special role of new enterprises in promoting it the development is found to have been largely indigenous and spontaneous rather than the result of a concerted effort to attract industry massachusetts distinguished universities and their research laboratories an inherited technological infrastructure the importance of agglomeration externalities and the good fortune of having a home grown firm become the world s leading manufacturer of minicomputers were major contributors to the state s success but the enormous opportunities for new enterprises which the electronics revolution generated and the tendency for such firms to start up mainly as spin offs from other high tech firms or from university laboratories and to remain close to their sources fueled the tendency towards spatial concentration

urbanisation and regional productivity in korean manufacturing as the first study for korea we estimate the effects of urbanisation and localisation economies on the productivity of 19 korean manufacturing industries in 1983 1988 and 1993 based on the observation that material inputs contributed about 60 per cent of productivity growth in korea we consider gross output productivity which is an innovation that distinguishes our study from previous ones we find that localisation economies have been dominant features of korean manufacturing industries whereas korean manufacturing industries did not benefit much from locating in large cities more interestingly there are some indications of quadratic relations between city size and urbanisation economies

economies of density and productivity in service industries an analysis of personal service industries based on establishment level data abstract this study aims to empirically investigate the determinants of service industry productivity such as economies of scale and economies of density by using establishment level data related to personal service industries in japan the study estimates the production functions for both value added and physical output measures in almost all the service industries examined significant economies of scale and economies of density are observed wherein productivity increases by 7 to 15 when the municipality population density doubles these findings are confirmed by an estimation in which the measures of physical output are considered instead of value added

breakthrough inventions and migrating clusters of innovation abstract we investigate the speed at which clusters of invention for a technology migrate spatially following breakthrough inventions we identify breakthrough inventions as the top 1 of us inventions for a technology during 1975 1984 in terms of subsequent citations patenting growth is significantly higher in cities and technologies where breakthrough inventions occur after 1984 relative to peer locations that do not experience breakthrough inventions this growth differential in turn depends on the mobility of the technology s labor force which we model through the extent that technologies depend upon immigrant scientists and engineers spatial adjustments are faster for technologies that depend heavily on immigrant inventors the results qualitatively confirm the mechanism of industry migration proposed in models like duranton duranton g 2007 urban evolutions the fast the slow and the still american economic review 97 197 221

globalization and the skilled city abstract the location of economic activity both across and within countries has undergone dramatic shifts over the last five decades three key trends stand out first cross country inequality has declined as many developing countries have grown rapidly second economic geography within countries has instead grown more unequal in both the developed and the developing world third within country spatial disparities have grown mainly because of the disproportionate success of skilled cities in this paper i develop a model that jointly explains these patterns as a consequence of deepening international economic integration my model explains the faster population and output growth of skilled cities as well as their tendency to increase their initial skill advantage consistent with the evidence my theory predicts a non monotonic path of urban growth in developed countries the model predicts a future shift in worldwide urban hierarchies as some developing world cities overtake unskilled cities in industrialized countries along global supply chains

agglomeration economies in the finnish manufacturing sector regional concentration of population and economic activity is a common phenomenon both in finland and the other most developed countries which refers to the existence of agglomeration economies two types of economies are usually recognized to be important specialization marshall externalities and diversity jacobs externalities economies the former refer to the geographical concentration of a specific industry and the latter to the industrial diversity of the local system this study examines the relationship between agglomeration economies and regional productivity in the manufacturing sector in finland a distinction is made between the effects of urbanization and localization economies the production function method is applied to the manufacturing sub sectors in the 83 nuts 4 level regions in 1995 and 1999 the results support the regional specialization more than diversification even if some differences can be seen between the manufacturing sub sectors

the timing of regional development abstract consider a country composed of regions of different qualities or endowments of amenities and natural resources for production and consumption initially only the highest quality regions are occupied as national population grows successively lower quality regions are occupied the equilibrium timing of occupation of uninhabited regions differs from the optimal timing typically being too late policies which would result in better timing are analyzed

spatial interdependence in us outward fdi into africa latin america and the caribbean the existing literature on spatial interdependence in fdi flows has primarily focused on developed economies as hosts with these hosts economically tied together via good infrastructure and historically strong significant trade flows in contrast we explicitly test for the presence of spatial interdependence in developing hosts africa latin american and the caribbean where such ties are not as strong for us outbound fdi between 1995 and 2007 our empirical results confirm third country effects do matter even when controlling for spatial and time period fixed effects based on the signs of the market potential and spatial lag coefficients we find us fdi strategies into these regions as consistent with complex vertical specialisation

tracing the sources of local external economies in a cross sectional establishment level analysis using confidential secondary data the paper evaluates the influence of commonly postulated sources of localised external economies supplier access labour pools and knowledge spillovers on the productivity of two us manufacturing sectors farm and garden machinery and measuring and controlling devices measures incorporating different distance decay specifications provide evidence of the spatial extent of the various externality sources chinitz s 1961 hypothesis of the link between local industrial organisation and agglomeration economies is also investigated the results show evidence of labour pooling economies and university linked knowledge spillovers in the case of the higher technology measuring and controlling devices sector while access to input supplies and location near centres of applied innovation positively influences efficiency in the farm and garden machinery industry both sectors benefit from proximity to producer services although primarily at a regional rather than a highly localised scale

agglomeration economies in urban manufacturing industries a case of japanese cities abstract the effects of urban agglomeration economies on productivities in two digit manufacturing industries is estimated using the cross section data of japanese cities in 1979 urbanization and localization economies which are major forms of urban agglomeration economies are explicitly separated the estimates of these economies vary considerably among industries light industries receive more productive advantages from urbanization economies than from localization economies but heavy industries experience these economies more from localization economies than from urbanization economies

population growth and local public finance in japanese cities the determinants of japanese city population growth for the period 2000 to 2005 are empirically examined with particular attention to local public finance the selection of one fiscal indicator fi from four alternatives ordinary balance ratio obr ratio of outstanding borrowing rob to the ordinary account debt service payment ratio dspr and financial power index fpi and the consideration of spatial auto correlation provide 12 regression models in each regression six additional explanatory variables are considered with reference to earlier empirical studies empirical results suggest that 1 three fis excluding dspr are significant and 2 the number of local government officers and the ratio of graduates of not less than junior college are highly significant in all specifications

external economies as a mechanism of agglomeration in eu manufacturing productive externalities are significant determinants of agglomeration not deeply studied at the industry and international level we analyse the impact on productivity growth of technological externalities both inter and intraindustry national or international at the industry level for the eu countries and the period 1995 2002 the results confirm the advisability of considering international externalities when countries are taken as regions whose omission underestimates national spillovers together with national endowments and a central geographical position the growth of productivity is encouraged by national and international specialization as a general result moreover it is fuelled by stronger interindustry spillovers and productive diversification a result more evident for high technology industries while lower technology industries are more sensitive to the omission of international externalities economic integration seems to be relevant because supranational regions with less frictio

some stronger measures of risk aversion in the small and the large with applications the arrow pratt measures of risk aversion for von neumann morgenstern utility functions have become workhorses for analyzing problems in the microeconomics of uncertainty they have been used to characterize the qualitative properties of demand in insurance and asset markets to examine the properties of risk taking in taxation models and to study the interaction between risk and life cycle savings problems to name just a few applications equally importantly they have generated the linear risk tolerance class of utility functions which has provided canonical examples in such diverse areas as portfolio theory and the theory of teams despite these successes there have been a number of areas for which the results have been weaker than hoped it is natural to use the risk aversion measures to compare the behavior of individuals in risky choice situations for example consider the individual portfolio choice problem in a two asset world with a riskless asset and a risky asset if individual a has a uniformly higher arrow pratt coefficient of risk aversion than individual b then b will always choose a portfolio combination with more wealth invested in the risky asset but suppose that both assets are risky now there is no obvious sense in which the more risk averse individual can be said to hold a less risky portfolio but it seems strange that such a simple alteration should destroy the analytics which support the basic intuition similarly consider the basic insurance problem if one individual a is more risk averse than another b in the arrow pratt sense it follows that a will pay a larger premium to insure against a random loss than will b typically though an individual evaluates partial rather than total insurance that is only some gambles can be insured against and others must be retained in this case even when the gambles which are retained are independent from those which are insured it is no longer true that the individual whose arrow pratt measure of risk aversion is higher will pay a larger insurance premium the situation is no better when we consider comparative statics exercises for a single individual decreasing absolute risk aversion in the sense of arrow and

agglomeration economies localization or urbanization i estimate localization and urbanization economies with a methodology and data different from those of henderson and nakamura after demonstrating the problems associated with using a single agglomeration variable i present my estimates as nakamura found for japanese cities i find evidence of both localization economies and urbanization economies but i also find evidence of urbanization diseconomies in some industries as did henderson my evidence for localization and urbanization economies in american cities is stronger than henderson s evidence finally i show that the pattern of agglomeration economies by industry is consistent with observed patterns of industrial location

agglomeration economies and productivity in indian industry abstract the primary objective of this paper is to examine the extent to which agglomeration economies contribute to economic productivity we distinguish three sources of agglomeration economies 1 at the firm level from improved access to market centers 2 at the industry level from intra industry localization economies and 3 at the regional level from inter industry urbanization economies there is considerable variation in the sources and magnitudes of agglomeration economies between industrial sectors in particular our results indicate that access to markets through improvements in inter regional infrastructure is an important determinant of firm level productivity whereas benefits of locating in dense urban areas do not appear to offset associated costs

interplay between technological innovation and environmental quality formulating the sdg policies for next 11 economies abstract since the inception of sustainable development goals sdgs the next 11 n11 countries are facing difficulties in attaining the sdg objectives as maintaining the environmental quality has been a challenge for them in this study we have revisited the technology policies of these countries and in doing so we have tried to address the problem of environmental degradation while addressing the issues of sustained economic growth clean and affordable energy and quality education in this pursuit we have designed two indices for environmental degradation and technological advancement and then analyzed the association between them following the environmental kuznets curve ekc hypothesis the empirical analysis has been done by ipat framework and by using bootstrapped quantile regression and rolling window heterogeneous panel casualty tests over a period of 1990 2017 following the results obtained from the analysis we have tried to address the objectives of sdg 13 sdg 4 sdg 8 sdg 9 sdg 7 and sdg 10

urban productivity in china in this empirical study we test the relationship of chinese urban productivity and city size using over 119 790 firm level production data cross 28 industries from the third national industrial survey along with the urban population data of 224 cities we find strong and prevailing significant agglomeration economies in chinese urban areas the estimated average agglomeration elasticity is around 0 051 implying that every doubling of city size will provide a 3 6 per cent gain in firm productivity the breakdown analysis suggests that based on current data the major source of the agglomeration advantage comes from localisation economies benefits from the concentration of firms of the same industry within one geographical area rather than urbanisation economies externalities from urban development itself the maximum size study also suggests that while most chinese cities have yet to grow to demonstrate the full strength of agglomeration economies many chinese industries have reached the optimal i