the adjustment cost model of the firm duality and productive efficiency we present the theoretical foundation for an adjustment cost technology that supports the intertemporal production decision making behavior using the directional distance function dynamic input efficiency measures are developed that can separate out the impact of variable and dynamic factors inefficiency levels an approach to implement this theory in a nonparametric fashion is developed and applied to an unbalanced panel of dutch glasshouse firms the application finds overuse of all variable inputs and overcapitalization of installations the overall dynamic efficiency gain of 16 remains possible with allocative inefficiencies indicating underinvestment in structures and installations a comparison of static and dynamic efficiency measures finds that the static overall cost inefficiency is overestimated with technical inefficiency being overstated and allocative inefficiency being understated

preferential trading arrangements as strategic positioning abstract we analyze a three country model of trade negotiations in which countries can form bilateral free trade areas bilateral customs unions or a trilateral preferential trading arrangement and can continue negotiating after reaching an agreement in contrast to the literature on multilateral bargaining the set of agreements can form a nonpartitional network while in contrast to the network literature players can reach multilateral agreements patient enough countries only reach bilateral agreements if insiders gain more than outsiders which allows them to manipulate the status quo in subsequent negotiations however a hub and spoke pattern may then emerge and insiders then dissipate the advantages of strategic positioning we also use variants on the model to explain why a us commitment not to bargain bilaterally sustained progress at gatt negotiations and the rarity of open access preferential trading arrangements

limit cycles in intertemporal adjustment models theory and applications this paper starts from well behaved i e concave one state variable optimal control models the crucial feature is that indigenous growth is present the replacement of the control by an adjustment process and presumably penalizing these adjustments may convert stable and only stable fixed point equilibria into limit cycles indeed given positive growth and proper externalities such that discounting exceeds growth one can generate stable limit cycles with ease e g for a separable framework examples from such diverse fields as renewable resources optimal saving and public choice highlight the economic applicability

dynamics of productivity taking into consideration the impact of energy consumption and environmental degradation abstract this study deals with the nonparametric frontier analysis in the case of the eu 28 countries for a period spanning from 1993 to 2015 it provides statistical inference about the radial output based measure of technical efficiency under the assumption of constant returns to scale crs and it performs scale analysis that allows determining the nature of scale inefficiency of each data point furthermore an order approach is developed for determining partial frontiers both traditional malmquist luenberger and bootstrapped malmquist productivity indexes between 1993 and 2015 are constructed analysis of productivity change by decomposing the total factor productivity index into efficiency change and technical change is performed showing respectively whether productivity gains derive mainly from improvements in efficiency or are mostly the result of technological progress in this sense the results can provide european policy makers with an improved understanding of the process of technological and efficiency change helping them to improve the design of their environmental and energy policies

the formation of networks with transfers among players we examine the formation of networks among a set of players whose payoffs depend on the structure of the network when players may bargain by promising or demanding transfer payments when forming links we vary three aspects of the game i whether players can only make transfers to and receive transfers from players to whom they are directly linked or whether they can also subsidize links that they are not directly involved in ii whether or not transfers relating to a given link can be made contingent on the full resulting network or only on the link itself and iii whether or not players can pay other players to refrain from forming links we characterize the networks that are supported under these variations and show how each of the above aspects either accounts for a specific type of externality or deals with the combinatorial nature of network payoffs

technical and environmental efficiencies and best management practices in agriculture an input distance function idf is estimated to empirically evaluate and analyse the technical and environmental efficiencies of 210 farms located in the chaudiere watershed quebec where water quality problems are particularly acute because of the production of undesirable outputs that are jointly produced with agricultural products the true idf is approximated by a flexible translog functional form estimated using a full information maximum likelihood method technical and environmental efficiencies are disaggregated across farms and account for spatial variations our results show that there is a significant correlation between the two efficiencies the idf is used to compute the cumulative malmquist productivity index and the fisher index the two indices are used to measure changes in technology profitability efficiency and productivity in response to the adoption of two selected best management practices bmps whose objective is to reduce water pollution we found significant differences acro

measuring technical and environmental efficiency in a state contingent technology most developed countries support farming activities through policies that are tailored to meet their specific social economic and environmental objectives economic and environmental efficiency have recently become relevant targets of most of these policies whose sound implementation can be enhanced by monitoring farm performance from a multidimensional perspective this paper proposes farm level technical and environmental efficiency measures that recognize the stochastic conditions in which production takes place a state contingent framework is used to model production uncertainty an implementable representation of the technology is developed using data envelopment analysis the application focuses on a sample of catalan arable crop farms results suggest that technical efficiency is slightly lower in bad than in good growing conditions nitrogen pollution can decrease substantially more under good than bad growing conditions

heterogeneous expectations and strong uncertainty in a minskyian model of financial fluctuations abstract we examine the role of expectations in a model aimed to explain financial fluctuations the model restates the core of minsky s financial instability hypothesis focusing on the role of expectations the hypotheses concerning the process of formation and revision of expectations are discussed in light of keynes s epistemological view of the behavior of boundedly rational agents under conditions of strong uncertainty these hypotheses are formalized by drawing on recent advances in complex dynamics decision theory and behavioral economics we show that widespread use of extrapolative expectations by economic agents produces a high degree of financial instability that may lead to a serious financial crisis and that the use by economic agents of a mix of extrapolative and regressive expectations reduces the dynamical instability of the model but may give rise to complex dynamics

real and monetary cycles in models of keynes wicksell type abstract we formulate a descriptive dynamic macroeconomic model of the keynes wicksell type which incorporates goods labour and financial markets the model has well specified budget constraints with respect to the economic agents households firms and government within it we introduce some standard nonlinearities into the goods and labour markets the dynamics of the general model consist of five differential equations we analyse two and three dimensional subcases to show the existence of real and monetary cycles whose interaction will determine the full dynamics we use numerical simulation to study the dynamics of the full model and the impact of various government fiscal and monetary policies

bilateralism and free trade we study a setting with many countries in each country there are firms that can sell in the domestic as well as foreign markets countries can sign bilateral free trade agreements that lower import tariffs and thereby facilitate trade we allow a country to sign any number of bilateral free trade agreements a profile of free trade agreements defines the trading regime our principal finding is that in symmetric settings bilateralism is consistent with global free trade we also explore the effects of asymmetries across countries and political economy considerations on the incentives to form trade agreements

the economic costs of environmental regulation in u s dairy farming a directional distance function approach analyses of the costs of regulating greenhouse gas emissions from dairy production which could be used to assess the effectiveness of alternative policy measures is a missing link in the literature this article addresses this gap by establishing the economic impact associated with a hypothetical greenhouse gas environmental regulatory regime across major dairy producing counties in the united states in doing so the article makes three important contributions to the literature first it develops a comprehensive pollution index based on environmental protection agency methodologies which contrasts with previous studies that rely on partial measures based only on surplus nitrogen stemming from the over application of fertilizer second the article uses a directional output distance function an approach that has not been employed previously to evaluate polluting technologies in the u s dairy sector third the article incorporates a four way error approach that accounts for unobserved county heterogeneity time invariant persistent technical efficiency time varying transient technical efficiency and a random error the results indicate that regulating greenhouse gas emissions from dairy farming would induce a 5 percentage point increase in average technical efficiency in addition the economic costs of implementing this hypothetical regulatory framework exhibit significant spatial variation across counties in the united states

dynamic data envelopment analysis modeling intertemporal behavior of a firm in the presence of productive inefficiencies abstract this study extends data envelopment analysis dea to a dynamic framework our dynamic dea not only provides a measure of dynamic productive efficiency but can also be used as a nonparametric alternative to the econometric modeling of the intertemporal behavior of a firm

networks of collaboration in oligopoly abstract in an oligopoly prior to competing in the market firms have an opportunity to form pair wise collaborative links with other firms these pair wise links involve a commitment of resources and lead to lower costs of production of the collaborating firms we study the incentives of firms to form links and the architecture of the resulting collaboration network we find that incentives to form links are intimately related to the nature of market competition our analysis also suggests that collaborations are used by firms to generate competitive advantage and that strategically stable networks are often asymmetric with some firms having many links while others have few links or are isolated specifically we show that networks with the dominant group architecture stars and inter linked stars are stable we also present some results on the architecture of socially efficient networks

allocating value among farsighted players in network formation we study the stability of networks when players are farsighted and allocations are determined endogenously the set of strongly efficient networks is the unique von neumann morgenstern farsightedly stable set with bargaining if the value function is anonymous component additive and top convex and the allocation rule is anonymous and component efficient moreover the componentwise egalitarian allocation rule emerges endogenously

alternative measures of environmental technology structure in dea an application abstract the nonparametric data envelopment analysis dea literature on environmental efficiency ee considers handling undesirable outputs in two alternative ways either in their original forms with the assumption that these are weakly disposable or in various translated forms with the assumption that these are strongly disposable choosing a particular approach implies adoption of a particular distinct treatment of undesirable outputs and hence yields a distinct set of ee estimates to explore the effects of the interplay between choice of ee measure and specific treatment of undesirable outputs this paper attempts to generate all possible output oriented ee measures based on these two alternative approaches furthermore guided by the argument that slacks are important in identifying properly the efficiency behavior of firms it proposes two new alternative slacks based formulations of ee one based on the range directional model and the other on the generalized proportional distance function model using a confected data set of ten firms and a real life data set of 22 oecd countries our empirical analysis reveals that first ee scores are influenced not only by the choice of disposability assumption for undesirable outputs but also by the way these are treated in various translated forms second the choice of any particular treatment of undesirable outputs plays no role in influencing the rankings of firms and third our two new alternative ee formulations are at the least viable alternatives to existing ee measures in ranking firms according to their eco efficiency behavior

a one stage model of link formation and payoff division abstract in this paper we introduce a strategic form model in which cooperation structures and divisions of the payoffs are determined simultaneously we analyze the cooperation structures and payoff divisions that result according to nash equilibria strong nash equilibria and coalition proof nash equilibria we find that no cycle will be formed if a player claims a positive amount for the formation of one of its links and that a player does not necessarily profit from a central position in a cooperation structure journal of economic literature classification numbers c71 c72

a monetary minsky model of the great moderation and the great recession abstract steve keen s model of minsky s financial instability hypothesis keen 1995 displayed qualitative characteristics that matched the real macroeconomic and income distributional outcomes of the preceding and subsequent fifteen years a period of economic volatility followed by a period of moderation leading to a rise of instability once more and a serious economic crisis this paper extends that model to build a strictly monetary macroeconomic model which can generate the monetary as well as the real phenomena manifested by both the great recession and the great moderation

a keynes goodwin model of the business cycle abstract the paper puts forward a dynamic is lm model in four state variables representing real balances inflation income distribution and a so called state of confidence local in stability is characterized by high low interest elasticities of money demand also a hopf bifurcation can be shown to exist freezing inflation and distribution makes a mathematical analysis of the main stability mechanisms in the outer regions possible the global dynamics of the full system is studied by means of numerical simulations it gives rise to unique and stable limit cycles lastly a sensitivity analysis inquires into the impact of parameter changes on the main cycle features

unemployment income distribution and debt financed investment in a growth cycle model abstract as recent experience suggests the most significant economic fluctuations are those that combine real and financial factors this paper works out a simple model that couples a version of goodwin s 1967 growth cycle model of real fluctuations with insights drawn from a model of financial fluctuations based on minsky s financial instability hypothesis vercelli 2000 sordi and vercelli 2006 sordi and vercelli 2012 the model suggested substantially modifies that of keen 1995 who combined insights from goodwin and minsky within a model of fluctuating growth in the real part of the model we introduce the possibility of disequilibrium in the goods market and formalize a mechanism of output adjustment based on the conventional dynamic multiplier the model so obtained may exhibit persistent dynamics and provide insights to enable better understanding of the nature of real world fluctuations

non parametric productivity analysis with undesirable outputs an application to the canadian pulp and paper industry this article extends the chavas cox approach to non parametric analysis by incorporating undesirable outputs to provide a more complete representation of the production technology inner and outer non parametric technology bounds are constructed the methods are illustrated with application to time series data for the canadian pulp and paper industry conventional measures that ignore changes in pollutant outputs underestimate true productivity growth further there is a large gap between estimates generated with reference to inner and outer bounds to the technology suggesting that researchers need to be aware of the limitations of results derived from analyses relying only on dea methods copyright 2001 oxford university press

chicken and egg competition among intermediation service providers we analyze a model of imperfect price competition between intermediation service providers we insist on features that are relevant for informational intermediation via the internet the presence of indirect network externalities the possibility of using the nonexclusive services of several intermediaries and the widespread practice of price discrimination based on users identity and on usage efficient market structures emerge in equilibrium as well as some specific form of inefficient structures intermediaries have incentives to propose non exclusive services as this moderates competition and allows them to exert market power we analyze in detail the pricing and business strategies followed by intermediation services providers copyright 2003 by the rand corporation

the law of the few the law of the few refers to the following empirical phenomenon in social groups a very small subset of individuals invests in collecting information while the rest of the group invests in forming connections with this select few in many instances there are no observable dierences in characteristics between those who invest in information and those who invest in forming connections this paper shows that the law of few naturally emerges in environments with identical rational agents we develop a strategic game in which players have the opportunity to invest in collecting information as well as in investing in bilateral connections with others we find that every strict equilibrium of this game exhibits the law of the few we also show that this pattern of social dierentiations is ecient in some cases

a clarification of the goodwin model of the growth cycle abstract we show that there is a difficulty in the original goodwin model which is also found in some more recent applications in it both the labour share and the proportion employed can exceed unity properties which are untenable however we show that the underlying dynamic structure of the model can be reformulated to ensure that these variables cannot exceed unity an illustrative example extends the original model and we argue it is both plausible and satisfies the necessary unit box restrictions

debt cycles instability and fiscal rules a godley minsky synthesis wynne godley and hyman minsky were two macroeconomists who saw the crisis coming this paper develops a simple macrodynamic model that synthesises some key perspectives of their analytical frameworks the model incorporates godley s financial balances approach and postulates that private sector s propensity to spend is driven by a stock flow norm the target net private debt to income ratio that changes endogenously via a minsky mechanism it also includes two fiscal rules a maastricht type fiscal rule according to which the fiscal authorities adjust the government expenditures based on a target net government debt ratio and a godley minsky fiscal rule which links government expenditures with private indebtedness following a counter cyclical logic the analysis shows that i the interaction between the propensity to spend and net private indebtedness can generate cycles and instability ii instability is more likely when the propensity to spend responds strongly to deviations from the stock flow norm and when the expectations that determine the stock flow norm are highly sensitive to the economic cycle iii the maastricht type fiscal rule is destabilising while the godley minsky fiscal rule is stabilising iv the paradox of debt can apply both to the private sector and the government sector

tradable set aside requirements tsars conserving spatially dependent environmental amenities land conversion patterns can conflict with endangered species protection by fragmenting the landscape incentive mechanisms can help mitigate the threat of habitat fragmentation by aggregating landowner conservation decisions across the landscape the optimal conservation strategy for endangered species can target the most connected habitat cluster as an initial starting point and then expand the conservation patch to maximize connectivity herein we present an incentive mechanism the tradable set aside requirements tsars designed to target the low cost contiguous conservation landscape and share the burden of conservation among landowners in the lab we examine the performance of two land use conservation policies tsars and the tsars combined with an agglomeration bonus evaluated by economic and biological measures of efficiency we find that tsars relative to a command and control policy increases patch size and habitat connectivity within the landscape additionally combining tsars with the agglomeration bonus increases biological efficiency habitat connectivity and patch size within the landscape but at a price higher opportunity cost tsars with the agglomeration bonus can be more cost effective than a tsars only policy for species sensitive to large core habitat requirements and landscape connectivity

network economics and the environment insights and perspectives local interactions and network structures appear to be a prominent feature of many environmental problems this paper discusses a wide range of issues and potential areas of application including the role of relational networks in the pattern of adoption of green technologies common pool resource problems characterized by a multiplicity of sources the role of social networks in multi level environmental governance infrastructural networks in the access to and use of natural resources such as oil and natural gas the use of networks to describe the internal structure of inter country relations in international agreements and the formation of bilateral links in the process of building up an environmental coalition for each of these areas we examine why and how network economics would be an effective conceptual and analytical tool and discuss the main insights that we can foresee

dynamic pollution adjusted inefficiency under the by production of bad outputs abstract this article extends the by production model to the dynamic context of adjustment costs associated with investment the empirical application focuses on panel data of french suckler cow farms over the period 1978 2014 considering emissions of greenhouse gases as bad output the paper estimates input and output specific technical inefficiency scores in the dynamic context and compares them with efficiency measures from the conventional static context our results reveal significant differences between inefficiency scores derived from the static and the dynamic frameworks for all variables except meat production the good output the inefficiency score is lower in the dynamic context than in the static context

dynamic analysis of policy lag in a keynes goodwin model stability instability cycles and chaos abstract in this paper we investigate the impact of government s stabilization policy on the dynamic behavior of the economic system in an analytical framework of a keynes goodwin model of the growth cycle in particular we study the effects of the policy lag on macroeconomic stability analytically and numerically it is shown that the increase of the policy lag contributes to destabilize the system and cyclical behavior and chaotic motion emerge in some ranges of the parameter values

core and periphery in networks abstract we study a model of network formation where the benefits from connections exhibit decreasing returns and decay with network distance we show that the unique equilibrium network is a periphery sponsored star where one player the center maintains no links and earns a high payoff while all other players maintain a single link to the center and earn lower payoffs both the star architecture and payoff inequality are preserved in an extension of the model where agents can make transfers and bargain over the formation of links under the condition that the surplus of connections increases in the size of agents neighborhoods our model thus generates two common features of social and economic networks 1 a core periphery structure 2 positive correlation between network centrality and payoffs

cross licensing and competition we study bilateral cross licensing agreements between n 2 firms that engage in competition after the licensing phase it is shown that the most collusive cross licensing royalty i e the one that allows the industry to achieve the monopoly profit is sustainable as the outcome of bilaterally efficient agreements in a symmetric setting if the terms of the cross licensing agreements are not observable to third parties the monopoly royalty is the unique symmetric bilaterally efficient royalty however when the terms of the agreements are public the most competitive royalty i e zero can also be bilaterally efficient policy implications regarding the antitrust treatment of cross licensing agreements are derived from these results

assessing dynamic inefficiency of the spanish construction sector pre and post financial crisis this paper undertakes the full decomposition of dynamic cost inefficiency into technical scale and allocative inefficiency based on the dynamic directional distance function the empirical application estimates dynamic inefficiency in the spanish construction industry before and during the current financial crisis over the period 2001 2009 static inefficiency measures are biased in a context of a significant economic crisis with large investments and disinvestments as they do not account for costs in the adjustment of quasi fixed factors allocative inefficiency is smaller while technical inefficiency is larger when using the dynamic compared to the static framework results further indicate that overall dynamic cost inefficiency is very high with technical inefficiency being the largest component followed by allocative and scale inefficiency moreover overall dynamic cost inefficiency is significantly larger before the beginning of the financial crisis than during the financial crisis larger firms are less technically and scale inefficient than smaller firms on average but have more problems in choosing the mix of inputs that minimizes their long term costs firms that went bankrupt on average have a higher overall dynamic cost inefficiency and scale inefficiency than continuing firms

brokers and competitive advantage the broker profits by intermediating between two or more parties using a biform game we examine whether such a position can confer a competitive advantage as well as whether any such advantage could persist if actors formed relations strategically our analysis reveals that if one considers exogenous the relations between actors brokers can enjoy an advantage but only if 1 they do not face substitutes either for the connections they offer or the value they can create 2 they intermediate more than two parties and 3 interdependence does not lock them into a particular pattern of exchange if on the other hand one allows actors to form relations on the basis of their expectations of the future value of those relations then profitable positions of intermediation only arise under strict assumptions of unilateral action we discuss the implications of our analysis for firm strategy and empirical research

inefficiencies in a model of spatial networks formation with positive externalities abstract in this paper we make an exploratory use of computational techniques genetic algorithms and monte carlo simulations to compute efficient and emergent networks in a spatialized version of the connections model of jackson and wolinski jackson m o wolinski a 1996 a strategic model of social and economic networks journal of economic theory 71 44 74 this approach allows us to observe and discuss inefficiencies that arise in a strategic network formation context with imperfectly link mediated positive externalities to connections and spatial link costs our results highlight that depending on the strength of the externalities emergent and efficient networks may share several structural properties nevertheless emergent networks are insufficiently dense and should be more structured around central agents

minsky models a structured survey minsky s ideas have recently gained prominence in the mainstream as well as in the heterodox literature however there exists no agreement upon the formal presentation of minsky s insights the aim of this paper is to survey the literature and identify differences and similarities in the ways through which minskyan ideas have been formalised we distinguish between the models that focus on the dynamics of debt or interest with no or a secondary role for asset prices and the models in which asset prices play a key role in the dynamic behaviour of the economy within the first category of models we make a classification between i the kalecki minsky models ii the kaldor minsky models iii the goodwin minsky models iv the credit rationing minsky models v the endogenous target debt ratio models and vi the minsky veblen models within the second category of models we distinguish between i the equity price minsky models and ii the real estate price minsky models key limitations of the models and directions for future research are outlined

networks and farsighted stability the main contribution of this paper is to provide a framework in which the notion of farsighted stability for games introduced by chwe 1994 can be applied to directed networks in particular we introduce the notion of a supernetwork a supernetwork is made up of a collection of directed networks the nodes and uniquely represents via the arcs connecting the nodes agent preferences and the rules governing network formation by reformulating chwe s basic result on the nonemptiness of farsightedly stable sets we show that for any supernetwork i e for any collection of directed networks and any collection of rules governing network formation there exists a farsightedly stable directed network we also introduce the notion of a nash network relative to a given supernetwork as well as the notions of symmetric nonsimultaneous and decomposable supernetworks to illustrate the utility of our framework we present several examples of super networks compute the farsightedly stable networks and the nash networks

financial regulations and bank credit to the real economy we present a new agent based model focusing on the linkage between the interbank market and the real economy with a stylised central bank acting as lender of last resort using this model we address the tradeoff between stability and economic performance for different structures of the interbank market we also explore the efficacy of recent regulatory reforms using our richer model our results suggest that the effects of regulatory leverage ratios on the banking sector s performance can vary in a complex and non monotonic way with the state of the economy the degree of connectivity of the interbank market and the amount of information available to market participants on bank risks

asymmetric adjustment of dynamic factors at the firm level presents a study which addressed the deficiencies of previous studies the specification and estimation in the modeling of asymmetry and zero gross investment in the agricultural industry reference to previous studies on asymmetry information on the standard dual model results of the study

estimating dynamic dual models under nonstatic expectations in this paper we derive a system of equations depicting agents dynamic decision rules under nonstatic price expectations based on the adjustment cost model of the firm the integrability conditions which can serve to guide the specification of flexible functional forms are established a two stage econometric model permitting empirical examination of both the expectations formation process and the dynamic structure of the industry is estimated using two different data series for u s production agriculture the estimation results suggest evidence of the presence of nonstatic price expectations in dynamic dual models for u s production agriculture

in efficient interbank networks we study the efficiency properties of the formation of an interbank network banks face a trade off by establishing connections in the interbank market on the one hand banks improve the diversification of their liquidity risk and therefore can obtain a higher expected payoff on the other hand banks not sufficiently capitalized have risk shifting incentives that expose them to the risk of bankruptcy connecting to such risky banks negatively affects expected payoff we show that both the optimal and the decentralized networks are characterized by a core periphery structure the core is made of the safe banks whereas the periphery is populated by the risky banks nevertheless the two network structures coincide only if counterparty risk is sufficiently low otherwise the decentralized network is underconnected as compared to the optimal one finally we analyze mechanisms that can avoid the formation of inefficient interbank networks

financial fragility and economic fluctuations abstract this paper proposes a simple prototype model that describes the complex dynamics of a sophisticated monetary economy the interaction between the current and intertemporal financial constraints on economic units brings about irregular fluctuations at both micro and macro levels we use qualitative dynamic analysis and numerical simulations to investigate the interaction between financial fragility modeled in terms of structural instability and dynamically unstable financial fluctuations the model suggested recently by one of the authors is here reformulated in more operational terms and extended in a number of new directions

a strategic model of social and economic networks we study the stability and efficiency of social and economic networks when self interested individuals can form or sever links first for two stylized models we characterize the stable and efficient networks there does not always exist a stable network that is efficient next we show that this tension persists generally to assure that there exists a stable network that is efficient one is forced to allocate resources to nodes that are not responsible for any of the production we characterize one such allocation rule the equal split rule and another rule that arises naturally from bargaining of the players

national strategic investment in european power transmission capacity abstract the transformation of the european electricity system requires substantial investment in transmission capacity to facilitate cross border trade and to efficiently integrate renewable energy sources however network planning in the eu is still mainly a national prerogative in contrast to other studies aiming to identify the pan european continental welfare optimal transmission expansion we investigate the impact of zonal planners deciding on network investment strategically with the aim of maximizing the sum of consumer surplus generator profits and congestion rents in their jurisdiction this reflects the inadequacy of current mechanisms to compensate for welfare re allocations across national boundaries arising from network upgrades we propose a three stage equilibrium model to describe the nash game between zonal planners i e national governments regulators or system operators each taking into account the impact of network expansion on the electricity spot market and the resulting welfare effects on the constituents within its jurisdiction we propose a novel way to solve the resulting gne epec type problem using a variation of a disjunctive constraints reformulation this allows to solve this problem without a priori assumptions on the relative valuation of shared constraints by each player using a four node sample network we identify several nash equilibria of the game between the zonal planners this example illustrates the failure to reach the first best welfare expansion in the absence of an effective framework for cross border cost benefit allocation

subscription mechanisms for network formation we analyze a model of network formation where the costs of forming links are publicly known but an individual s benefits are not known to the social planner the objective is to design a mechanism which not only ensures that an efficient network always forms in equilibrium but also ensures that the resulting net payoffs to the agents are equitable we propose two mechanisms towards this end in the first agents announce sequentially the set of players with whom they wish to form links and a cost contribution we show that all subgame perfect equilibria of this game result in the formation of an efficient network but the resulting net payoffs are asymmetric the second mechanism corrects this asymmetry through a two stage variant of the first mechanism we also discuss an extension of the basic model to cover the case of directed graphs and give conditions under which the proposed mechanisms are immune to deviations by coalitions

nash in nash bargaining a microfoundation for applied work a nash equilibrium in nash bargains has become the workhorse bargaining model in applied analyses of bilateral oligopoly this paper proposes a non cooperative foundation for nash in nash bargaining that extends the rubinstein 1982 model to multiple upstream and downstream rms assuming there exists gains from trade for each rm pair we prove that there exists an equilibrium with immediate agreement and negotiated prices that correspond to rubinstein prices if and only if the marginal contribution of a set of agreements is weakly greater than the sum of the agreements marginal contributions we provide stronger conditions under which equilibrium prices are unique

goodwin cycles and the bopc growth paradigm a macrodynamic model of growth and fluctuations abstract the paper builds a non linear macrodynamic model to study the relation between the functional distribution of income technological progress and economic growth in the short term the interaction between the productivity regime the demand regime and the distributive conflict generates cyclical paths a la goodwin in the long term output growth rate is constrained by the balance of payments a la thirlwall in which the elasticities of foreign trade are modeled as a function of the complex relation between the wage share and the innovation capabilities of theeconomy

networked relationships in the e mid interbank market a trading model with memory interbank markets are fundamental for bank liquidity management in this paper we introduce a model of interbank trading with memory our model reproduces features of preferential trading patterns in the e mid market recently empirically observed through the method of statistically validated networks the memory mechanism is used to introduce a proxy of trust in the model the key idea is that a lender having lent many times to a borrower in the past is more likely to lend to that borrower again in the future than to other borrowers with which the lender has never or has in frequently interacted the core of the model depends on only one parameter representing the initial attractiveness of all the banks as borrowers model outcomes and real data are compared through a variety of measures that describe the structure and properties of trading networks including number of statistically validated links bidirectional links and 3 motifs refinements of the pairing method are also proposed in order to capture finite memory and reciprocity in the model the model is implemented within the mason framework in java

the formation of financial networks modern banking systems are highly interconnected despite various benefits linkages between banks carry the risk of contagion in this article i investigate whether banks can commit ex ante to mutually insure each other when there is contagion risk in the financial system i model banks decisions to share this risk through bilateral agreements a financial network that allows losses to be shared among various counterparties arises endogenously i characterize the probability of systemic risk defined as the event that contagion occurs conditional on one bank failing in equilibrium interbank networks i show that there exist equilibria in which contagion does not occur

economic value of greenhouse gases and nitrogen surpluses society vs farmers valuation abstract livestock supply must challenge the growth of final demand in the developing countries this challenge has to take into account its ecological effects since the dairy and livestock sectors are clearly pointed out as human activities which contribute significantly to environmental deterioration therefore livestock activity models have to include desirable and undesirable outputs simultaneously using this perspective we implement a data envelopment analysis model to evaluate shadow prices of outputs under contradictory objectives between the society and the farmers we show that farmers are able to reduce pollution significantly if society accepts to balance farmers opportunity cost finally we observe that initial levels of the co 2 tax implemented in european countries are in line with farmers valuation while the current level of the co 2 tax tends to reach the value of pollution targeted by the society