tipping and concentration in markets with indirect network effects this paper develops a framework for measuring tipping the increase in a firm s market share dominance caused by indirect network effects our measure compares the expected concentration in a market to the hypothetical expected concentration that would arise in the absence of indirect network effects in practice this measure requires a model that can predict the counterfactual market concentration under different parameter values capturing the strength of indirect network effects we build such a model for the case of dynamic standards competition in a market characterized by the classic hardware software paradigm to demonstrate its applicability we calibrate it using demand estimates and other data from the 32 64 bit generation of video game consoles a canonical example of standards competition with indirect network effects in our example we find that indirect network effects can lead to a strong economically significant increase in market concentration we also find important roles for beliefs on both the demand side as consumers tend to pick the product they expect to win the standards war and on the supply side as firms engage in penetration pricing to invest in growing their networks

competition and social influence the diffusion of the sixth generation processor in the global computer industry1 when is a social actor most strongly influenced by its peers this article addresses this question by clarifying when computer firms were most strongly affected by the choices of their structurally equivalent rivals to adopt a well known technology intel s sixth generation processor the core hypothesis is that the effect of adoptions by structurally equivalent firms increases with the competitive pressure that a focal firm faces in its market position the results show that a chosen firm is most strongly influenced by comparable others when it faces scale based competition and is diversified the implications of this study are twofold a social actor s sensitivity to the conduct of others may depend not only on its place in a hierarchy but also on the nature of its ties to an external audience and a contingent theory of social influence may be necessary to characterize diffusion processes correctly particularly when external and time varying nonnetwork factors have significant effects

consumption experience and sales promotion expenditure an economic theory of habit formation through consumption learning is developed to explain order differences in relative sales promotion expenditures among brands the theory applies to consumer brands in equilibrium markets where consumer information from sources other than advertising sales promotion and previous consumption experience is negligible three propositions are derived from the theory brands with more consumption experience 1 spend proportionately less on sales promotion as well as 2 on advertising and promotion combined and 3 place proportionately more emphasis on advertising relative to sales promotion these propositions are formulated as hypotheses and tested against empirical data from the pims project it is found that the data are generally consistent with the propositions in order to examine the robustness of the results the hypotheses are subjected to three different empirical tests each with different assumptions the findings are shown to be reasonably robust with re

promoting network competition by regulating termination charges abstract this paper contributes to the policy debate about the optimal termination charge when penetration rates are explicitly taken into account although lowering termination charges towards cost leads to more efficient usage its impact on consumer surplus is ambiguous since it induces an increase in fixed subscription fee through the so called waterbed effect we show that a reduction in termination charge below cost has two opposing effects on consumer surplus it softens competition but also helps to internalize network externalities hence it can decrease or increase penetration depending on whether or not the first effect dominates the second we show that the first effect dominates the second when networks are weak substitutes or the penetration rate is high

an empirical investigation of success strategies for businesses along the product life cycle since the introduction of the concept of the product life cycle plc some decades ago a great deal has been written on the subject and several empirical studies have been conducted however empirical research to date is often limited in scope it is oriented towards the analysis of the growth and saturation stages and focused primarily on the study of consumer goods furthermore the application of the plc concept in strategic planning is largely disappointing the normative orientation of most of this literature being somewhat naive and misleading the aim of the present research is to study the efficiency of different strategies for achieving market share and cash flow objectives this study is performed on different types of businesses producing both consumer and industrial products situated at various stages on the product life cycle growth maturity and decline a sample of approximately 1 100 businesses 217 in the growth stage 315 in the maturity stage 569 in the decline stage is drawn from the pims data base a cluster analysis is run to identify natural groups of homogeneous businesses for each of the nine identified groups linear regression models are estimated to study the influence of strategic actions finance marketings production r d personnel on two criteria of performance market share and cash flow the research indicates that strategies not only depend on the life cycle stage but also are influenced by the goal orientation of the firm short term cash flow or long term market share and that success strategies appear to be contingent upon the business and the environmental characteristics

price competition and compatibility in the presence of positive demand externalities in many cases the benefit to a consumer of a product increases with the number of other users of the same product these demand interdependencies are referred to in the literature as positive demand externalities or network externalities this paper examines the dynamic pricing behaviors of an incumbent and a later entrant with special attention to the impacts of demand externalities compatibility and competition on prices and profits defining market power as the ability to price above a competitor without losing market share we show how demand externalities and installed base combine to confer market power we model optimal pricing as a differential game with the optimal price trajectory established as nash open loop controls for a duopoly durable goods market with strong demand externalities the results show an increasing price trajectory can be optimal as expected a new entrant is better off if its products are compatible with those of the incumbent especially when demand externalities are strong and the installed base of the incumbent is large less intuitively the incumbent as well may be better off agreeing on common standards the comparison of monopoly and duopoly shows that under strong demand externalities and a small installed base the incumbent profits from compatible entry

business to business bargaining in two sided markets abstract bargaining regularly takes place on the business to business side of two sided markets however little is known about the consequences of these negotiations in this paper we allow the platform or a policy maker to choose between a standard design offering posted prices to both sides or a design with bargaining offering a posted price to consumers and negotiating with at least some firms we find that the platform pursues negotiations when it has a strong bargaining position and does so by targeting firms with the largest network effects while this behavior may appear exploitive we show that profits and welfare often align across platform designs this alignment stems from how bargaining incentivizes the platform greater platform bargaining power allows the platform to extract more of the network surpluses since it can convert more of the firm surplus into profits and this incentivizes the platform to draw in greater participation generating greater welfare these results suggest that platform and policy maker preferences often align in this setting

assessing the performance of conservation auctions an experimental study this work uses controlled laboratory experiments to investigate the budgetary and the economic performance of competitive tenders for allocating conservation contracts to landholders experiments have been replicated in two different countries to check for robustness of results we find that auctions outperform the more traditional fixed price programs only in the one shot setting with repetition the auctions quickly lose their edge the budget constrained auction performs similarly to the target constrained in the one shot setting but appears more robust to repetition our results suggest that previous estimates of conservation auction performance are too optimistic and we propose a method for improving such estimates

social capital for hire mobility of technical professionals and firm influence in wireless standards committees the movement of personnel between firms has been shown to have important implications for firms yet there has been little direct investigation of the underlying mechanisms we propose that in addition to their human capital mobile individuals carry social capital affecting the outcomes of the firms they join and leave by altering the patterns of interaction between firms in this study we examine how job mobility affects firm influence in a technical standards setting committee for u s wireless telecommunications we hypothesize and find that hiring individuals who are richer in social capital increases firm influence in technical standards setting committees by increasing the hiring firm s social capital we also find the benefits of hiring social capital are attenuated when an interfirm relationship is maintained by multiple individuals in contrast we find that the loss of personnel does not affect a firm s social capital or influence over standards directly but that it does have an effect on firm social capital and influence contingent on changes in the firm s business strategy in advancing these arguments we address the broader question of individuals as carriers of social capital and the conditions under which interpersonal connections are appropriable by firms

a global game with strategic substitutes and complements abstract we study a global game in which actions are strategic complements over some region and strategic substitutes over another region an agent s payoff depends on a market fundamental and the actions of other agents if the degree of congestion is sufficiently large agents strategies are non monotonic in their signal about the market fundamental in this case a signal that makes them believe that the market fundamental is more favorable for an action may make them less likely to take the action because of the risk of overcrowding

social learning and dynamic pricing of durable goods we analyze the impacts of social learning sl on the dynamic pricing and consumer adoption of durable goods in a two period monopoly consumers can make either early uninformed purchases or late but potentially informed purchases as a result of social learning several results are derived first we identify the market conditions under which ex ante homogeneous consumers may choose to purchase at different times second equilibrium adoption may demonstrate inertia where all adopt late or frenzy where all adopt early in particular adoption inertia appears when sl intensity is reasonably high but may vanish when sl intensity exceeds a certain threshold third firm profits and social welfare first weakly decrease in sl intensity and may then jump up by a lump sum amount at the threshold sl intensity level mentioned above last we show that the firm potentially benefits from informative advertising or investing to cultivate more social learning

improving new technology venture performance under direct and indirect network externality conditions this study compares the effectiveness of five responses to external uncertainty in markets with network externalities avoidance imitation control cooperation and real options reasoning as a form of strategic flexibility our analysis of 385 new technology ventures shows that direct and indirect network externalities have opposite effects on the effectiveness of these strategies moreover under network externalities attempts to make ventures less dependent upon environmental instabilities perform differently compared to attempts to control the environment finally we show that real options reasoning does not always perform better under conditions of higher uncertainty such as uncertainty due to direct network externalities

coordinating adoption decisions under externalities and incomplete information abstract a monopolist sells a good whose value depends on the number of buyers who adopt it as well as on their private types the seller coordinates the buyers adoption decisions based on their reported types and charges them the price based on the number of adoptions we study ex post implementable sales schemes that are collusion proof and show that under the revenue maximizing scheme more buyer types are willing to adopt when there are more adoptions and the number of adoptions is maximized subject to the participation constraints

rational incompatibility with international product standards abstract international product standardization enables traditional price based competition but the existence of redesign costs or network effects creates market frictions that diminish the incentive to standardize if there already exists a different technology in an established market this leads to multi attribute competition between products and will generally reduce trade flows not only do incumbent firms using a different technology have an incentive to deviate from an international standard but a host country government concerned for its consumers welfare has no incentive to enforce the international standard and may even value deviation from the international standard through technical barriers to trade

the market value of rarity abstract most theories of demand assume that consumers value the characteristics of products but are unconcerned with how many other consumers also consume the product however several theories of demand argue that consumers can value the exclusivity of possessing a rare object we test this implication on a particular collectible rare coins our paper examines the case of coins of a given type and identical quality that have mintages in different quantities this allows us to exclude the common case in which rarity or price itself is an indicator of quality for our sample rarer coins command higher prices rarity in the form of original mintage more strongly influences the market price than does collectibility as represented by the rarest coins of each mint mark or year we also point out that here may be other goods such as automobiles for which rarity may influence market demand

configuring value for competitive advantage on chains shops and networks building on thompson s 1967 typology of long linked intensive and mediating technologies this paper explores the idea that the value chain the value shop and the value network are three distinct generic value configuration models required to understand and analyze firm level value creation logic across a broad range of industries and firms while the long linked technology delivers value by transforming inputs into products the intensive technology delivers value by resolving unique customer problems and the mediating technology delivers value by enabling direct and indirect exchanges between customers with the identification of alternative value creation technologies value chain analysis is both sharpened and generalized into what we propose as a value configuration analysis approach to the diagnosis of competitive advantage with the long linked technology and the corresponding value chain configuration model as benchmark the paper reviews the distinctive logic and develops models of the value shop and the value network in terms of primary activity categories drivers of cost and value and strategic positioning options 1998 john wiley sons ltd

to segregate or to integrate education politics and democracy how is the quality of public education affected by the presence of private schools for the rich theory and evidence suggest that the link depends crucially on the political system we develop a theory that integrates private education and fertility decisions with voting on public schooling expenditures we find that the presence of a large private education sector benefits public schools in a broad based democracy where politicians are responsive to low income families but crowds out public education spending in a society that is politically dominated by the rich the main predictions of the theory are consistent with state level data and micro data from the u s as well as cross country evidence from the programme for international student assessment study

the city network paradigm measuring urban network externalities in recent years network behaviour has been analysed extensively as the emerging model for economic growth by network behaviour a metaphor for co operative behaviour among individuals corporate

theorizing path dependence a review of positive feedback mechanisms in technology markets regional clusters and organizations the concept of path dependence has often been criticized as vague and only narrowly applicable although we can find some very refined definitions of the concept we also find a wide range of empirical phenomena being described as path dependent we argue that more detailed accounts of the positive feedback mechanisms that form paths can take path dependence beyond this state of being overdetermined but under specified reviewing three well described cases of path dependent dynamics in technology markets regional clustering and organizations we define a core set of positive feedback mechanisms that constitute path dependence at different analysis levels and clarify the relationship between positive feedback and increasing returns we show that path dependent processes that is processes driven by positive feedback that veer toward rigidity or lock in can be but do not have to be found under many labels including structural inertia coevolution or institutional persistence we conclude that a precise definition of path dependence does not need to be at odds with the concept s widespread use in understanding organizational and industrial development processes copyright 2013 the author 2012 published by oxford university press on behalf of associazione icc all rights reserved oxford university press

contract design for the purchase of environmental goods from agriculture an environmental stewardship program whereby farmers are paid directly for the environmental goods they provide is developed by combining the microparameter distribution model with mechanism design principles the program overcomes the information asymmetry between farmers and governments and accounts for the deadweight losses from distortionary taxes the characteristics of optimal input and payment schedules of the program are derived these optimal schedules are determined by the tradeoffs between farming profits environmental benefits and deadweight losses from taxes and are second best except under restrictive conditions on deadweight losses from taxes and on the marginal product of inputs and marginal pollution costs

organizational and financial correlates of a contrarian human resource investment strategy correlates of the contrarian investment strategy of countercyclical hiring were investigated through the use of regression models that explain variance in four measures of such hiring at the indi

network externalities technological progress and the competition of market contracts abstract network externalities are used to describe the fact that many modern products become more valuable the more users adopt products of the same technology where network externalities and technological progress exist the various kinds of inefficiencies discussed in the recent literature can be explained by different types of contracts the main categories analysed are simple market contracts update contracts and service contracts it is shown that these types of contract emerge endogenously from the incentive structure of profit maximizing firms competition between these contracts may substantially reduce inefficient allocations caused by network externalities

tying and innovation a dynamic analysis of tying arrangements this paper analyses the effects of tying arrangements on r d incentives it shows that tying is a means through which a firm can commit to more aggressive r d investment in the tied goods market tying also has the strategic effect of reducing rivals incentives to invest in r d the strategy of tying is a profitable one if the gains via an increased share of dynamic rents in the tied goods market exceed the losses that result from intensified price competition in the market the welfare implications of tying and consequently the appropriate antitrust policy are discussed

attack defence and contagion in networks sanjeev goyal acknowledges support from a keynes fellowship cambridge inet institute and european research area complexity net resilience and interaction of networks in ecology and economics adrien vigier acknowledges support from a gates cambridge fellowship as well as a core fellowship from universite catholique de louvain

entry order market share and competitive advantage a study of their relationships in new corporate ventures abstract this research explored the extent to which entry order the decision to enter a market early as a pioneer or to wait and follow determines not only market share but other competitive factors such as position and promotion that late entrants might hope to employ to overcome a pioneer s advantages the study analyzed data on 119 nonservice new corporate ventures consumer and industrial from the profit impact of marketing strategy pims research data base str4 based on a review of the strategic management and marketing literatures three hypotheses on the effects of entry order were generated and subsequently tested the first hypothesis states that pioneers achieve higher market shares than followers since a priori the market share for the pioneer has to be larger than the market share split among later entrants the issue is the rate at which the early entrant s market share will decrease as additional businesses enter what we term the degree of lateness effect later entrants have the choice of being an early follower that is entering the industry soon after the pioneers or waiting until the industry matures late entrants a high degree of lateness effect would indicate that early followers would gain higher market shares than late entrants an analysis of the data indicated that pioneers have significantly higher market shares than followers and that little degree of lateness effect existed between early and late entrants the second hypothesis states that pioneers will achieve differentiation advantages in such areas as product and service quality promotion and technological positioning greater than followers there is considerable theoretical and empirical evidence that pioneers are able to generate competitive advantages through name recognition image leadership the establishment of technical standards which make switching to other products difficult and superior consumer information advantages due to market lead times an analysis of the data indicated that pioneers have significant competitive advantages in product service quality and technology over followers the one area where pioneers did not have a competitive advantage over followers was in advertising and promotion the third hypothesis states that followers will achieve cost advantages greater than pioneers while learning curve theory suggests that pioneers will enjoy cost price advantages contrasting arguments can be made that followers can enjoy lower costs by coattailing on the pioneer s efforts to educate consumers develop a dominant design and create an infrastructure to span the gap from raw material suppliers to finished good deliveries we suggest that because pioneers are likely to have attained differentiation advantages followers will have only one alternative left compete on the basis of price and become the lowest cost producer an analysis of the data indicates that while followers do appear to have lower prices than pioneers followers do not have significantly lower cost structures this result implies a lower level of profitability for a follower strategy overall the results of this study advance the notion that new corporate ventures should enter as pioneers rather than as followers pioneers had higher market shares and stronger competitive positions higher quality more differentiated products and better service than followers followers appear to have few successful competitive options available outside of promotion for gaining market share

entry in monopoly market this paper develops new empirical models of market concentration from game theoretic models of entry we construct our models from inequality conditions that describe entrants equilibrium strategies in simultaneous move and sequential move games and use them to study the effects of entry in isolated monopoly markets for new automobiles from estimates of the market size necessary to support one and two dealers we conclude that monopoly dealers do not block the entry of a second dealer we also find that entry does not cause price cost margins to fall by much

indirect network externality effects on product attributes indirect network externality ine effect exists when the utility of a product increases with the greater availability of compatible complementary products we demonstrate that ine effects can vary by product attributes with externality sensitive attributes gaining more from increased availability of complementary products than other attributes past research has assumed that the benefit of increased availability of complementary products e g software accrues to theentireproduct e g hardware utilizing data covering a period from 1985 to 1995 on compact disc player prices attributes and cd titles releases and using a hedonic price approach we find significant positive interactions between cd title availability and two attributes of the cd player namely changer capacity and its oversampling rate in addition to ine attribute interactions increased availability of cd titles is found to have a significant positive impact on the overall price of cd players which is consistent with past research collectively these effects of ine have helped reduce the yearly decline in the price of cd players the finding that ine effects differentially affect different attributes can help managers in decisions such as pricing timing of introduction and changing the levels of ine sensitive attributes

unobservable effects and business performance while unobservable factors such as corporate culture access to scarce resources management skill and luck can be postulated to be principal determinants of business success their effects are all but ignored in studies of business performance this study making use of the pims data base reports empirical evidence indicating that failure to control for unobservable factors influencing profitability both biases and exaggerates the effect of strategic factors indeed the influence of unobservable factors is so pervasive as to invalidate many of the conclusions drawn from studies failing to control for their effects

contextual influences on the corporate entrepreneurship performance relationship a longitudinal analysis abstract over the past several years corporate entrepreneurship has been widely touted by executives and researchers alike as an effective means for revitalizing companies and improving their financial performance for the most part the call for greater entrepreneurial behavior on the part of established companies has been accepted on faith as an inherently desirable objective the implicit logic behind the pervasive belief in the value of corporate entrepreneurship seems to be that risk taking innovation and aggressive competitive action the key elements of entrepreneurial corporations will help in identifying and pursuing lucrative product market opportunities and in providing new bases for achieving superior competitive positions but what do we really know about the financial consequences of corporate entrepreneurship most of the evidence that corporate entrepreneurship pays off is anecdotal in nature or based on cross sectional studies that focus on the short term implications of entrepreneurial behaviors as such in a definitive sense we know very little about the financial consequences of corporate entrepreneurship in an attempt to improve our understanding of this issue this article describes a study of corporate entrepreneurship and its impact on company financial performance data were collected from three different samples over a seven year period to assess the longitudinal impact of corporate entrepreneurship on firm performance these samples consist of 24 medium sized manufacturing firms representing 14 industry segments 39 chemical companies and 45 fortune 500 industrial firms representing five industry segments data were gathered on each sample using both primary and secondary sources regression analysis was then used to analyze the data the results suggest that corporate entrepreneurship has a positive impact on financial measures of company performance this effect on performance which tends to be modest over the first few years increases over time suggesting that corporate entrepreneurship may indeed be a generally effective means for improving long term company financial performance moreover the results indicate that corporate entrepreneurship is a particularly effective practice among companies operating in hostile environments as opposed to benign environments the study has three principal implications for practicing managers first the study documents the general financial viability of engaging in corporate entrepreneurship this is not to suggest that corporate entrepreneurship is a panacea for improving financial performance however entrepreneurial behavior when considered on the whole i e across firms and industries is associated with superior financial performance second the study suggests a need to use a long term time horizon in order to adequately judge the financial consequences of corporate entrepreneurship the use of a shorter evaluation period may not allow sufficient time for entrepreneurial actions to have their full market and corresponding financial impact finally the study identifies the context specific character of effective entrepreneurial practice specifically corporate entrepreneurship appears to be a particularly effective strategic practice among firms operating in hostile business settings

competing by restricting choice the case of search platforms we show that a two sided matching platform can successfully compete by limiting the number of choices it offers to its customers while charging higher prices than platforms with unrestricted choice we develop a stylized model of online dating where agents with different outside options match based on how much they like each other starting from these microfoundations we derive the strength and direction of indirect network effects and show that increasing the number of potential matches has a positive effect due to larger choice but also a negative effect due to competition between agents on the same side agents resolve the trade off between these competing effects differently depending on their outside options for agents with high outside options the choice effect is stronger than the competition effect leading them to prefer an unrestricted choice platform the opposite is the case for agents with low outside options who then have higher willingness to pay for a platform restricting choice as

electricity markets cleared by merit order part ii strategic offers and market power in an electricity market cleared by a merit order economic dispatch we make use of the mixed integer linear programming milp scheme derived in part i to find the market outcomes supported by a pure strategy nash equilibria ne from these ne we identify offer strategies in terms of gaming or not gaming that best meet the risk benefit expectations of the participating gencos to do this a number of measures of potential profit gain and loss are developed that quantify the notion of risk benefit under the possible multiple ne the ne identification scheme is tested on several systems of up to 30 generating units each with four incremental cost blocks also showing how market power is influenced by the number and size of the competing gencos as well as by the imposed price cap

globalizing carbon lock in this paper extends the arguments surrounding carbon lock in elaborated in unruh energy policy 28 2000 817 30 2002 317 to countries currently undergoing industrialization it argues that for numerous reasons industrializing countries are unlikely to leapfrog carbon intensive energy development on the contrary carbon lock in may be globalizing and could further constrain climate change mitigation options it is then argued that many policy recommendations ignore carbon lock in possibly limiting their potential for successful implementation the paper then discusses four policy approaches that appear to have advantages given lock in conditions it is recognized however that relative ease of implementation does not necessarily equate with superiority instead it is merely a path dependent outcome of past development decisions pursuing policies on the basis of relative implementation ease may help address the issue of climate change but could also result in sub optimal outcomes along other dimensions of sustainable development

targeting incentives to reduce habitat fragmentation the fragmentation of wildlife habitat has long been recognized as a principal threat to terrestrial biodiversity in this paper we develop a theoretical model to analyze the spatial targeting of incentives for the restoration of forested landscapes when land quality is spatially heterogeneous and wildlife habitat can be enhanced by reducing fragmentation we consider a regulator who uses subsidies to encourage the conversion of private agricultural land to forest on a pre defined set of landscapes the regulator can observe land use choices but not the opportunity costs on individual land parcels the important insight to emerge from the theoretical analysis is that solutions at or near corners are a strong possibility on each landscape either none or all of the agricultural land should be converted to forest corner solutions are directly linked to the spatial process determining habitat benefits to verify the theoretical insight we present a simulation of the effects of incentive based policies on the spatial distribution of forests in south carolina the empirical methodology integrates an econometric model of land use change with gis based landscape simulations the empirical findings strongly support our conjecture regarding corner solutions and the optimal targeting policy is shown to produce substantial welfare gains over a spatially uniform incentive

pesticide taxation and multi objective policy making farm modelling to evaluate profit environment trade offs abstract many countries in western europe have introduced voluntary programmes to encourage farmers to adopt environmentally more benign practices such as integrated pest management but more policy action appears to be needed to meet the environmental quality levels now demanded input taxes could assist in meeting policy objectives the issue considered here is the identification of the most appropriate specification of a tax instrument to reduce the environmental problems of agricultural pesticide usage this paper takes a farm systems approach to evaluation a case study illustration is given for a specialist arable farm in the uk combining an economic model of land use and production with a set of environmental indicators for pesticides linking these two components allows the identification of the potential trade offs between achieving reductions in the environmental burden to a number of ecological dimensions and farm income different pesticide tax specifications vary in both the magnitude and the direction of their impacts the results of the model indicate that either compromises will have to be made in environmental policy or additional instruments will be required to counter act the negative side effects of some instruments

legal restrictions and monetary evolution abstract the legal restrictions school of monetary theory hypothesizes that the use of ordinary currency would die out if legal tender laws were abolished instead interest bearing instruments would be used in transactions this paper refutes the claim as far as it applies to money as a medium of exchange the network externality or coordination convention properties of a medium of exchange imply that the strategy of holding interest bearing instruments is not necessarily individually dominant there is a critical mass of users that has to be assembled before a switch can occur

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

the correlates of entrepreneurship in three types of firms the objective of the research was to discover the chief determinants of entrepreneurship the process by which organizations renew themselves and their markets by pioneering innovation and risk taking some authors have argued that personality factors of the leader are what determine entrepreneurship others have highlighted the role played by the structure of the organization while a final group have pointed to the importance of strategy making we believed that the manner and extent to which entrepreneurship would be influenced by all of these factors would in large measure depend upon the nature of the organization based upon the work of a number of authors we derived a crude typology of firms simple firms are small and their power is centralized at the top planning firms are bigger their goal being smooth and efficient operation through the use of formal controls and plans organic firms strive to be adaptive to their environments emphasizing expertise based power and open communications the predictiveness of the typology was established upon a sample of 52 firms using hypothesis testing and analysis of variance techniques we conjectured that in simple firms entrepreneurship would be determined by the characteristics of the leader in planning firms it would be facilitated by explicit and well integrated product market strategies and in organic firms it would be a function of environment and structure these hypotheses were largely borne out by correlational and multiple regression analyses any programs which aim to stimulate entrepreneurship would benefit greatly from tailoring recommendations to the nature of the target firms

adapting auctions for the provision of ecosystem services at the landscape scale abstract auctions or competitive tenders can overcome information asymmetries to efficiently allocate limited funding for ecosystem services most auctions focus on ecosystem services on individual properties to maximise the total amount provided however for many services it is not just the total quantity but their location in the landscape relative to other sites that matters for example biodiversity conservation may be much more effective if conserved sites are connected adapting auctions to address ecosystem services at the landscape scale requires an auction mechanism which can promote coordination while maintaining competition multi round auctions in which bidding is spread over a number of rounds with information provided between rounds on the location of other bids in the landscape offer an approach to cost effectively deliver landscape scale ecosystem services experimental economic testing shows these auctions deliver the most cost effective environmental outcomes when the number of rounds is unknown in advance which minimises rent seeking behaviour it also shows that a form of bid improvement rule facilitates coordination and reduces rent seeking where the biophysical science is well developed such auctions should be relatively straightforward to implement and participate in and have the potential to provide significantly better outcomes than standard one shot tenders

regulatory reform in britain regulatory reform in britain john kay and john vickers major sectors of the british economy are currently undergoing far reaching regulatory reform deregulation removal of barriers to competition and the introduction of new methods of regulation are occurring notably in financial services some of the professions and in utility industries such as telecommunications gas and electricity this paper gives an economic assessment of these developments the authors examine the root causes of market failure that call for regulation externalities monopoly and information problems and the pros and cons of various regulatory responses a broad distinction is drawn between structural regulation the determination of which firms or types of firms can engage in which activities and conduct regulation the control of how firms behave in their chosen activities recent examples of deregulation plus re regulation in britain are seen in part as a shift from structural to conduct regulation the relative merits of the two modes of regulation are complex to assess but it is argued that some recent regulatory reforms are placing undue reliance on conduct regulation as well as assessing individual industries the authors draw general conclusions about the desirability of regulatory solutions that make full use of market forces

build or buy strategies in the local loop we provide a dynamic model to study how the presence of the option to buy the incumbent local exchange carrier s ilec facilities via local loop unbundling affects the competitive local exchange carriers clecs incentives to build alternative infrastructures we show that an unregulated incumbent sets a rental path for its local loop which delays technology adoption compared to the case in which there is no unbundling we also characterize the equilibrium rental path set by the unregulated incumbent it is prohibitively high at the initial phases when there is no effective threat of entry with alternative technologies and it is decreasing over time in later phases the decrease in the rental price follows the rise of the entrant s opportunity cost of leasing lines we also argue that neither allowing higher prices for unbundled elements over time nor setting a sunset clause would suffice to induce facility based competition by studying the unregulated ilecs decision regarding unbundling we challenge the implicit assumption behind the sunset clauses which is that the ilec would either deny unbundling or charge too high a price for its network elements in the absence of regulation we claim that the ilecs that initially resist unbundling requirements would tend to charge attractive access prices relative to the entrants alternatives for their infrastructure which become less essential over time this abstract was borrowed from another version of this item

a framework for integrated risk management in international business treatments of risk in the international management literature largely focus on particular uncertainties to the exclusion of other interrelated uncertainties this paper develops a framework for categorizing the uncertainties faced by firms operating internationally and outlines both financial and strategic corporate risk management responses

competing technologies the learning curve and rational expectations abstract the problem of choice between several variants of a technology subject to dynamic learning economies is examined in a rational expectations model with overlapping adopters it is shown that even with rational expectations the long term market outcome depends sensitively on the pattern of early chance events and that only one variant of the technology will come to dominate the market in the long run this variant need not be the one which is socially optimal or most promising technically

uncertainty and the employment dynamics of small and large businesses we examine the impact of uncertainty on employment dynamics alternative measures of uncertainty are constructed based on the survey of professional forecasters and regression based forecasting models for gdp growth inflation sp the impact on large businesses are generally non existent or weaker our results suggest that to truly understand the effects of uncertainty on employment dynamics we need to focus on the relatively smaller and entrepreneurial businesses we discuss implications for the framing of economic policy

economic exposure and integrated risk management most corporate risk management research focuses on particular risk exposures to the exclusion of other interrelated exposures by contrast this study models corporate risk exposures using a multivariate approach integrating the distinct exposures of interest to finance international business and strategy researchers the paper addresses the implications of multivariate modeling for corporate risk management some key methodological issues arising in empirical estimation of corporate economic exposures and directions for research on integrated risk management 1998 john wiley sons ltd

growth incentives to invest in a network externality environment firms that operate in the telecommunications industry often have to make large and risky investments in digital infrastructure this paper examines how firm size affects the incentive to invest in infrastructure projects in industry environments that incur substantial network externalities we suggest that in the presence of network externalities a firm s rate of growth first declines and then increases with the size of its user base an implication of this result is that firms may benefit from making investments in emerging digital infrastructure early enough to achieve a substantial user base and to gain that user base before other firms investments pre empt them the results mean that firms that undertake earlier successful investment may achieve preemption very quickly the sources of network externalities contribute to the incidence of strategic alliances in network industries particularly when coupled with the pressures of technical uncertainty copyright 1998 by oxford university press

speeding up the internet regulation and investment in european fiber optic infrastructure in this paper we study how the coexistence of access regulations for legacy copper and fiber networks shapes the incentives to invest in network infrastructure to this end we develop a theoretical model explaining investment incentives by incumbent telecom operators and heterogeneous entrants and test its main predictions using panel data from 27 eu member states over the last decade our theoretical model extends the existing literature by among other things allowing for heterogeneous entrants in internet access markets as we consider both other telecom and cable tv operators as entrants in the empirical part we use a novel data set including information on physical fiber network investments legacy network access regulation and recently imposed fiber access regulations our main finding is that more stringent access regulations for both the legacy and the fiber networks harm investments by incumbent telecom operators but in line with our theoretical model do not affect cable tv operators

price and resource related uncertainty in the estimation of the revenue of a wind farm the revenue that wind farms produce is subject to the inherent uncertainty of the wind resource in the short run and the long term this revenue is subject to an additional price related uncertainty in jurisdictions where the output of the wind farms is paid at the prices cleared at the local electricity market an econometric model is developed to estimate the risks of using limited information in the estimation of the annual revenue of a wind farm sensitivities that measure the influence of each uncertainty factor in the overall risks are also developed an application example is shown by which investors or policy makers may determine how typical wind farm capital costs may influence financial project feasibility under a predetermined risk

look before you leap market opportunity identification in emerging technology firms entrepreneurs play a fundamental role in bringing new technologies to market because technologies are often configurable to serve a variety of different markets it is possible for entrepreneurs to identify multiple market opportunities prior to the first market entry of their emerging firms and if they elect to do so to therefore have a choice of which market to enter first the empirical results presented in this paper offer three new insights regarding this important early stage choice in new firm creation first they reveal that serial entrepreneurs have learned through prior start up experience to generate a choice set of alternative market opportunities before deciding which one to pursue in their new firm creation second the analysis indicates that entrepreneurs who identify a choice set of market opportunities prior to first entry derive performance benefits by doing so third the positive relationship between the number of market opportunities identified prior to first entry and new firm performance is nonlinear and subject to decreasing marginal return the research literature has yet to acknowledge the notion of multiple opportunity identification prior to entry and the related idea of selecting the most favorable market opportunity for the creation of a new technology firm

local network externalities and market segmentation this paper models interaction between groups of agents by means of a graph where each node represents a group of agents and an arc represents bilateral interaction it departs from the standard katz shapiro framework by assuming that network benefits are restricted only amongst groups of linked agents it shows that even if rival firms engage in bertrand competition this form of network externalities permits strong market segmentation in which firms divide up the market and earn positive profits the analysis also shows that some graphs or network structures do not permit such segmentation while for others there are easy to interpret conditions under which market segmentation obtains in equilibrium c 2009 elsevier b v all rights reserved

biological conservation in dynamic agricultural landscapes effectiveness of public policies and trade offs with agricultural production article i nfo land use change and land management intensification are major drivers of biodiversity loss especially in agricultural landscapes that cover a large and increasing share of the world s surface incentive based agri environmental policies are designed to influence farmers land use decisions in order to mitigate environmental degradation this paper evaluates the effectiveness of agri environmental schemes for biological conservation in a dynamic agricultural landscape under economic uncertainty we develop a dynamic ecological economic model of agricultural land use and spatially explicit population dynamics we then relate policies subsidies to grassland taxation of agricultural intensity to the ecological outcome probability of persistence of a species of interest we also analyze the associated trade offs between agricultural production in value and biological conservation in probability of persistence at the landscape scale

pioneering and market share is entry time endogenous and does it matter dogenous variable they test the model by reestimating a recent empirical pioneering model using hausman s specification test they find statistically significant bias in the exogenous pioneering model in assessing the effect of pioneering on market share they find substantive differences between the biased and inconsistent exogenous pioneering estimates and the consistent endogenous estimates in terms of both statistical and practical significance

network effects market structure and industry performance abstract this paper analyzes oligopolistic markets with network externalities exploiting a minimal complementarity structure on the model primitives that allows for pure network goods we prove existence of non trivial fulfilled expectations equilibrium we formalize the concept of industry viability investigate its determinants and show that it improves with more firms in the market and or by technological progress these results enlighten some well known conclusions from case studies in the management strategy literature we also characterize the effects of market structure on industry performance which depart substantially from ordinary markets the approach relies on lattice theoretic methods supplemented with basic insights from nonsmooth analysis

technology choice and timing with positive network effects abstract when two competing and incompatible products coexist in a market potential users face a choice between the two products and the alternative of deferring the decision this paper examines the choice between the two substitutes where each one is subject to a positive network effect that is a user of one of the products experiences an increase in the value for each additional person using the same product we examine this buy or wait problem either for an individual or a manager making the investment on behalf of a firm by formulating and analyzing a decision theoretic model to model the stochastic evolution of market share we build on the generalized polya urn of arthur et al arthur w b ermoliev y m kaniovski y m 1987 path dependent processes and the emergence of macro structure european journal of operational research 30 3 294 303 allowing for composition of the market to affect not just the relative market shares but also the absolute growth rate of the market we show that the optimal strategy is defined by a pair of market penetration thresholds that depend on the market composition looking at the effect of the network effects on the optimal strategy we find that more pronounced network effects can either raise or lower the penetration thresholds

project management under risk using the real options approach to evaluate flexibility in r d managerial flexibility has value in the context of uncertain r d projects as management can repeatedly gather information about uncertain project and market characteristics and based on this information change its course of action this value is now well accepted and referred to as real option value we introduce in addition to the familiar real option of abandonment the option of corrective action that management can take during the project the intuition from options pricing theory is that higher uncertainty in project payoffs increases the real option value of managerial decision flexibility however r d managers face uncertainty not only in payoffs but also from many other sources we identify five example types of r d uncertainty in market payoffs project budgets product performance market requirements and project schedules how do they influence the value from managerial flexibility we find that if uncertainty is resolved or costs revenues occurafter all decisions have been made more variability may smear out contingencies and thus reduce the value of flexibility in addition variability may reduce the probability of flexibility ever being exercised which also reduces its value this result runs counter to established option pricing theory intuition and contributes to a better risk management in r d projects our model builds intuition for r d managers as to when it is and when it is not worthwhile to delay commitments for example by postponing a design freeze thus maintaining flexibility in r d projects

the economics of convention c onventions regulate much of economic and social life yet they have received surprisingly little attention from economists by a convention we mean a pattern of behavior that is customary expected and self enforcing everyone conforms everyone expects others to conform and everyone has good reason to conform because conforming is in each person s best interest when everyone else plans to conform lewis 1969 familiar examples include following rules of the road adhering to conventional codes of dress and using words with their conventional meanings conventions with direct economic implications include species of money and credit industrial and technological standards accounting rules and forms of economic contracts indeed it would scarcely be an exaggeration to say that almost all economic and social institutions are governed to some extent by convention the main feature of a convention is that out of a host of conceivable choices only one is actually used this fact also explains why conventions are needed they resolve problems of indeterminacy in interactions that have multiple equilibria indeed from a formal point of view we may define a convention as an equilibrium that everyone expects in interactions that have more than one equilibrium the economic significance of conventions is that they reduce transaction costs imagine the inconvenience if whenever two vehicles approached one another the important exceptions are sugden 1986 and ullman margalit 1977 the interested reader might also refer to the symposium on social norms that appeared in the fall 1989 issue of this journal with articles by sugden 1989 and elster 1989

obtaining strategic advantage from being imitated when can encouraging clones pay an important business strategy research theme concerns finding ways to minimize competition faced by the firm this paper however focuses on a different set of situations the model developed suggests that an innovator s best strategy may be to encourage clones of its product when a network externality is present key factors to consider in assessing whether encouraging cloning is the innovator s best strategy are 1 the benefit to be derived in terms of added user base contributed by the clone sales traded off against 2 the unit sales that will be lost to the clones these factors in turn depend upon the strength of the network effect and the degree to which the innovator s product quality is perceived by consumers to be superior to the clone s the model further suggests that both the innovator and clone earn their highest payoffs when the clone takes the lead in price setting i e when the clone establishes its own price by considering for each price it might set how the innovator will react to that price and the innovator as price follower responds to the price the clone chooses the paper demonstrates that the clone leader innovator follower situation represents the unique nash equilibrium in price setting strategies a central implication is that when operating in a network externality environment instead of a problem to be avoided clones may be valuable assets to an innovating firm building up the user base for the innovator s technology by bringing lower valuing consumers into the market which in turn makes the innovator s product more attractive to high and medium valuing purchasers thus when the above described conditions hold being cloned can be more profitable for an innovating firm than dominating the market alone

technical compatibility and the mode of foreign entry with network externalities we examine the preferences of a foreign firm and a local government over two modes of foreign direct investment de novo entry and acquisition of the domestic incumbent two crucial features of the model are network externalities and partial incompatibility between the domestic and the foreign technology the relative welfare impact of the two entry modes depends on the degree of market competition and the strength of the network externality the clash between the foreign firm s choice and the local government s ranking of the two entry modes can motivate limits on the degree of foreign ownership of the local firm ce texte examine les preferences d une firme etrangere et d un gouvernement du pays hote quant a deux modes d investissement direct de l etranger entree de novo de la firme etrangere versus acquisition d une firme domestique en place deux facteurs pris en compte sont la presence d externalites de reseau et d incompatibilite partielle entre la technologie locale et celle introduite par la firme etrangere l impact relatif des modes d entree sur le mieux etre local depend du degre de concurrence sur le marche et de l importance des externalites de reseau le conflit entre les preferences de l entreprise etrangere et les preferences du gouvernement local peuvent etre a la source de politiques qui limitent le degre de proprieteetrangere permis

innovation and cooperation in the small firm sector evidence from northern britain freel m s and harrison r t 2006 innovation and cooperation in the small firm sector evidence from northern britain regional studies 40 289 305 over the last 20 years network based models of innovation led economic development have grown increasingly popular to both the polity and the academy in contrast to earlier linear conceptions innovation is viewed as a systemic phenomenon in which interactive learning and cooperative entrepreneurship are fundamental the way that systems and in turn networks are usually defined is by the volume and characteristics of the linkages that bind them together accordingly drawing upon a recent survey of small firms in scotland and northern england 1347 responses the paper is concerned with mapping the extent of small firm innovation related networking and understanding the unique contribution such networks make to the successful introduction of new products and processes importantly it investigated the impact of networking on innovation in both manu

policies and international trade agreements on technical compatibility for industries with network externalities abstract the paper considers a country home in which consumers have heterogeneous preferences over ex ante incompatible domestic and imported products and benefit from a network externality we analyze the cases with trade under perfect competition and the international duopoly in which both governments strategically use policies toward compatibility but cannot use conventional trade policies in both cases the equilibrium outcome of the non cooperative game depends upon the strength of the network externality effect and involves either an excessively high equilibrium level of compatibility in combination with either too much or too little trade or very low equilibrium levels of both compatibility and trade the paper concludes with the analysis of the international agreements on policies toward compatibility and evaluates the existing provisions in the wto legal system aimed at minimizing the trade inhibiting impact of standards and regulations in the area of technical compatibility

optimal bundling of technological products with network externality for many high tech and internet related products utility to consumers depends in part on the size of the user base a phenomenon called network externality a firm with a portfolio of these and other products that are often asymmetric in their degree of network externality or marginal cost may have to look beyond the traditional strategies of pure components pure bundling and mixed bundling one such strategic alternative in a two product case would be a so called mixed bundling 1 under which the bundle and product 1 are offered but the other product can only be purchased in a bundled form the purpose of this study is to compare and contrast the impact of such asymmetry or symmetry in direct network externality and cost on the choice of bundling strategies we model a monopolist firm that has a product in each of two categories and faces heterogeneous consumers results suggest that pure bundling is more profitable when both products have low marginal costs or high network externality whereas pure components or mixed bundling 1 is more profitable when the products diverge in their costs and network externality e g only one product has network externality traditional mixed bundling is optimal in other instances

pioneers and followers competitive tactics environment and firm growth abstract market pioneering where a firm is first to offer a distinctively new product to the market is a commonly recognized form of corporate entrepreneurship as with other forms of corporate entrepreneurship the linkage between market pioneering and firm performance has received limited empirical attention much of which has yielded inconsistent results nonetheless two conclusions regarding when and how pioneering relates to firm performance are revealed in the literature first theory and past research suggest that pioneering is an environment specific phenomenon that is certain types of environments may be most likely to encourage or reward the actions of pioneers while these same actions may meet with limited success in other environments second theory and past research suggest that firm performance is affected by the fit between a firm s pioneer follower status and its competitive tactics in other words market entry order moderates the effectiveness of a firm s competitive tactics such that certain tactics will be most effective when employed by market pioneers while other tactics will be most effective when employed by market followers considered jointly the preceding observations suggest that insights might be gained regarding the effective management of market pioneering and market following by seeking to understand a how these phenomena are manifested in different industry environments and b what pioneers and followers do differently in these environments to promote their performance the research described in this paper addresses these issues in particular this paper develops theory that describes how particular competitive tactics are thought to relate to firm sales growth rate among market pioneers and market followers in two distinct environmental settings hypotheses are developed based on the following research propositions p1 in hostile environments pioneers and followers will differentially benefit in achieving high sales growth rates from their reliance on relatively high prices relatively broad product lines relatively broad served geographical markets relatively advanced process technologies and relatively advantageous purchasing arrangements p2 in benign environments pioneers and followers will differentially benefit in achieving high sales growth rates from their reliance on relatively high quality products relatively strong product warranties relatively high advertising and promotion expenditures relatively strong control over distribution channels employed and relatively large numbers of distribution channels employed to test the hypothesized relationships data were collected from the senior managers of 103 independent nondiversified manufacturing firms operating in 75 industries cluster analysis anova and correlational analysis were employed as the principal analytical techniques the results suggest that market pioneers grow neither more nor less rapidly than market followers however in hostile environments pioneering may enable firms to break out of the dominant price based mode of competition and grow in spite of charging high prices this ability of pioneers to excel in hostile environments seems to be further facilitated by limiting product line breath to a small number of product offerings that provide a tight fit with market needs pioneers in hostile environments also appear to be relatively better served than followers from gaining a wide geographical distribution for their products followers in hostile environments on the other hand should seek to reduce their cost structures in order to effectively sustain low price strategies the employment of advanced process technologies and the pursuit of purchasing advantages were actions which proved to be more advantageous for followers than for pioneers in hostile environments the managerial implications of this research applicable to benign environment firms are quite different other things being equal relatively high prices may not be as detrimental to growth among followers in benign environments as they are among followers in more hostile environments benign environment followers may in fact be better off when they charge relatively high prices and compete on non price bases the results also suggest that in benign environments offering products with warranties superior to those of competitors may have a significantly more positive effect on sales growth among pioneers than followers moreover employing a large number of distribution channels appears to benefit pioneers more than followers however among the sampled firms benign environment pioneers that realized the greatest growth did not have extensive control over distribution channel members therefore benign environment pioneers may grow more quickly if they target their distribution related resources toward expanding their channels rather than toward controlling some smaller number these channels this study contributes to the pioneering literature by having corroborated several findings of the pims based studies regarding tactical differences between pioneers and followers and by having further documented the relevance of market entry order or pioneer follower status as a moderator of the performance associated with particular competitive tactics moreover by having examined the tactics performance relationships of pioneers and followers in two distinct environmental settings this study adds specificity and empirical support to the emerging theoretical paradigm that depicts pioneering as an environment specific phenomenon finally this study contributes to the literature on coping with hostility by having theorized about and empirically identified common and effective bases for competition under varying levels of environmental hostility

diffusion of a new product under network effects the us dvd market we formulate a model that captures the inter dependence between hardware demand and software supply indirect network effect in the dvd industry the identification of the network effect comes from the difference in software availability across two different formats vhs and dvd we find that a 1 increase in the number of dvd titles raises the demand for dvd players by 0 87 simultaneously a 1 increase in video player ownership leads to a 0 14 increase in the variety of video titles our simulations show that hardware manufacturers might be able to internalize the network externality to increase total industry revenues

defensive marketing strategies this paper analyzes how a firm should adjust its marketing expenditures and its price to defend its position in an existing market from attack by a competitive new product our focus is to provide usable managerial recommendations on the strategy of response in particular we show that if products can be represented by their position in a multiattribute space consumers are heterogeneous and maximize utility and awareness advertising and distribution can be summarized by response functions then for the profit maximizing firm it is optimal to decrease awareness advertising it is optimal to decrease the distribution budget unless the new product can be kept out of the market a price increase may be optimal and even under the optimal strategy profits decrease as a result of the competitive new product furthermore if the consumer tastes are uniformly distributed across the spectrum a price decrease increases defensive profits it is optimal at the margin to improve product quality in the direction of the defending product s strength and it is optimal at the margin to reposition by advertising in the same direction in addition we provide practical procedures to estimate 1 the distribution of consumer tastes and 2 the position of the new product in perceptual space from sales data and knowledge of the percent of consumers who are aware of the new product and find it available competitive diagnostics such as the angle of attack are introduced to help the defending manager this article was originally published in marketing science volume 2 issue 4 pages 319 360 in 1983

grabber holder dynamics and network effects in technology innovation abstract economists and marketing researchers have examined how network effects can have an impact on the adoption of technology and products and how an intrinsic inferior product or technology may dominate the market however their studies have not explained how a producer could create network effect for a new product and how after successfully creating the network effect for this product the producer could lose it in a short period of time while these studies provide insight into technology innovation after it happened they fail to shed light on understanding many of the surprises that we experience in the process the objective of this paper is to present a fundamental framework that helps us understand most of the surprising outcomes that we have seen in technology innovation processes especially the winners and losers in an innovation process the framework is built on a grabber holder dynamic model that captures how all the intelligent agents involved in an innovation shape the forces that either induce a strong network effect or destroy a network effect that is already in place the model can be used to explain many surprising events that have happened in technology innovation in this paper i apply the model to the personal computer innovation

network effects software provision and standardization in this paper we examine the software provision decision of software firms the provision decision by software firms determines the value and hence the market share of competing hardware technologies we show how the provision decision by software firms determines whether multiple hardware technologies are supported in equilibrium or whether there is de facto standardization with only one hardware technology supplied with software in equilibrium we show that when consumers place a high value on software variety there is a suboptimal amount of standardization by the market

waves in consumption with interdependence among consumers this paper presents a model to analyze the development of consumption patterns when there are social interactions among consumers in particular a consumer in this model recognizes three reference groups a peer group of similar consumers with whom the consumer wishes to share consumption activities a distinction group from which the consumer wishes to distinguish him or herself and an aspiration group to which the consumer does not belong but wishes that he she did and with whom the consumer would like to share consumption activities the interplay of aspiration and distinction can lead to waves in consumption these can happen when for example the avant garde consumption of up market pioneers is copied by other types of consumer as the latter aspire to emulate the former the former in turn seek to distinguish themselves from these unwelcome companions by varying their consumption in consequence a particular consumption activity may start up market an then gradually proceed down the social spectrum more complex patterns with continuing cycles in consumption can also be found the paper argues that this model is not only applicable to the consumption behaviour of an elite or would be elite but is relevant in a wide range of consumption settings

from exogenous to endogenous economic networks internet applications economic agents behaviour is affected by their position in a network either exogenous or endogenous in which they interact with a sub set of neighbours only the network s links which may be generated by vertical and or horizontal relations or by more complex morphologies may explain the transition between dynamic equilibria and the instability of economic aggregates moreover networks shape strategic interaction among agents by determining their strategies the problem of access and interconnection particularly relevant in the internet is perhaps the best example a two way feedback between strategies and network structures arises instead when links are endogenous those features are clearly shown in the mechanism underlying the formation of peering links an dr d networks

technology adoption in the presence of network externalities we analyze technology adoption in industries where network externalities are significant the pattern of adoption depends on whether technologies are sponsored a sponsor is an entity that has property rights to the technology and hence is willing to make investments to promote it key findings include the following 1 compatibility tends to be undersupplied by the market but excessive standardization can occur 2 in the absence of sponsors the technology superior today has a strategic advantage and is likely to dominate the market 3 when one of two rival technologies is sponsored that technology has a strategic advantage and may be adopted even if it is inferior 4 when two competing technologies both are sponsored the technology that will be superior tomorrow has a strategic advantage

the diffusion of clean technologies a review with suggestions for future diffusion analysis abstract this article gives an overview of the literature on clean technology diffusion followed by suggestions for future analysis findings from diffusion analysis are presented in the form of 10 stylised facts helping the reader to see the forest for the trees the overall conclusion is that the diffusion of clean technology same as the diffusion of normal innovations is governed by endogenous mechanism epidemic learning and learning economies and by exogenous mechanisms policy is important for clean technology diffusion but other factors are important too the characteristics of the clean technology absorptive capacities of potential adopters and the age structure of capital it is often overlooked that companies have a choice they can choose between an end of pipe solution a process change adaptation and a change of process substitution this means that the diffusion and evolution of one clean technology will be at the expense of the diffusion of another clean technology something overlooked in studies on clean technology diffusion further research is needed on the influence of public policy on clean technology choice expectations about learning economies and prices adjustment costs network externalities and complementary innovations on clean technology adoption choices

technology success and failure in winner take all markets the impact of learning orientation timing and network externalities in industries characterized by network externalities a single technology standard often rises to dominance locking out competing technologies this research demonstrates that despite path depend

transmission management for congested power system a review of concepts technical challenges and development of a new methodology transmission networks have some constraints that should be addressed in order to ensure sufficient control to maintain the security level of a power system while maximising market efficiency the most obvious drawback of transmission constraints is a congestion problem that becomes an obstacle to perfect competition among the market participants since it can influence spot market pricing as the power flow violates transmission constraints redispatching generating units is required and this will cause the price at every node to vary this manuscript presents concepts technical challenges and methodology for investigating an alternative solution to the redispatch mechanism and then formulates lmp scheme using an optimisation technique that may well control congestion as the main issue the lmp scheme are varied and improved to take into account the energy price congestion revenue cost of losses as well as the transmission usage tariff by utilising shift factor based optimal power flow sf opf which is derived from the well known dc optimal power flow dc opf model

the impacts of uncertainties in a real options model under incomplete information abstract this paper examines the impact with respect to the uncertainty of the underlying state variable profit uncertainty on the real options model in a situation of incomplete information profit uncertainty has not incorporated into the real options model under incomplete information in that the underlying state variable is not formulated as the stochastic process see e g bernardo a e chowdhry e b 2002 resources real options and corporate strategy journal of financial economics 63 211 234 we extend the model developed by bernardo and chowdhry to formulate the underlying state variable as the stochastic process we conclude that profit uncertainty has the same type of impact on the real options value and its triggers both under complete and incomplete information

agri environmental policies for biodiversity when the spatial pattern of the reserve matters the aim of this paper is to compare different environmental policies for cost effective habitat conservation on agricultural lands when the desired spatial pattern of reserves is a random mosaic we use a spatially explicit mathematical programming model which studies the farmers behavior as profit maximizers under technical and administrative constraints facing different policy measures each farmer chooses the land use on each field which determines the landscape at the regional level a spatial pattern index ripley l function is then associated to the obtained landscape indicating on the degree of dispersion of the reserve we compare a subsidy per hectare of reserve with an auction scheme and an agglomeration malus we find that the auction is superior to the uniform subsidy for cost efficiency the agglomeration malus does better than the auction for the spatial pattern but is more costly

a positive theory of flexibility in accounting standards abstract we develop a positive theory of accounting standards when standards generate network externalities and differ in the amount of reporting discretion or flexibility they provide firms we evaluate expected value maximizing firms preferences between two standards regimes rigid and flexible as the number of firms subject to each standard varies as the organization of the securities market varies and as the mapping from the underlying economics of the firms transactions to the accounting reports produced under the two standards vary we also compare firms preferences between the two regimes to the preferences of profit maximizing traders in the firms securities

product compatibility as a signal of quality in a market with network externalities abstract in this paper i consider the compatibility decision as a signaling device of the quality of a newly introduced technology of which users are not informed provided that firms are located sufficiently far apart in hotelling s 0 1 interval i find separating equilibria where low compatibility signals high quality this possible separation is due to the fact that low compatibility is more advantageous to the high quality entrant than to the low quality entrant since it can prevent users of the established technology from enjoying network benefits from the new technology very much

spatially uniform versus spatially heterogeneous compensation payments for biodiversity enhancing land use measures the importance of compensation payments for biodiversity enhancing land use measures has grown over the past decade particularly in connection with agri environmental policy given that both the costs and the benefits of biodiversity enhancing land use measures are subject to spatial variation the criterion of cost effectiveness calls for spatially heterogeneous compensation payments however when deciding whether to implement uniform or heterogeneous compensation payments the regulator has to compare the disadvantage of uniform payments in terms of cost effectiveness with the disadvantages of spatially heterogeneous payments to help resolve this issue this paper provides a simple ecological economic model that allows the reduced cost effectiveness associated with uniform payments for biodiversity enhancing land use measures to be assessed for different types of benefit and cost functions

exclusionary pricing in markets with interdependent demands in this paper i use a simple model to study the competitive effects of exclusionary pricing involving two markets related by a positive demand externality it is shown that below cost pricing on one of these markets can allow an incumbent firm to exclude from both markets a more efficient rival which does not have a customer base yet however when exclusion occurs it is always socially optimal in addition under some circumstances there is inefficient entry the entrant wins both markets while the social optimum would require the incumbent to win them