does one soros make a difference a theory of currency crises with large and small traders do large investors increase the vulnerability of a country to speculative attacks in the foreign exchange markets to address this issue we build a model of currency crises where a single large investor and a continuum of small investors independently decide whether to attack a currency based on their private information about fundamentals even abstracting from signaling the presence of the large investor does make all other traders more aggressive in their selling relative to the case in which there is no large investors small investors attach the currency when fundamentals are stronger yet the difference can be small or null depending on the relative precision of private information of the small and large investors adding signaling makes the influence of the large trader on small traders behaviour much stronger

returns to scale damages to scale marginal rate of transformation and rate of substitution in dea environmental assessment abstract this study discusses a new use of dea data envelopment analysis environmental assessment to measure mrt marginal rate of transformation and rs rate of substitution between desirable and undesirable outputs to discuss mrt and rs this study first examines a concept of disposability from the perspective of corporate strategies to adapt a regulation change on undesirable outputs the concept of disposability is separated into natural and managerial disposability then this study explores the computational framework of rts returns to scale and dts damages to scale the type of rts is measured within the natural disposability while the type of dts is measured within the managerial disposability considering the two types of disposability this study discusses mrt and rs between desirable and undesirable outputs as an illustrative example this study applies the proposed approach to evaluate the performance of us coal fired power plants this study finds that the regulation policy on no x and so 2 has been effective on their emission controls under us clean air act caa the regulation on co 2 or a major source of the global warming and climate change is still insufficient in the united states therefore this study recommends that us federal and local governments should regulate the amount of co 2 emission under the caa

sustainability development for supply chain management in u s petroleum industry by dea environmental assessment abstract environmental assessment and protection are important concerns in modern business consumers are interested in environmental protection they avoid purchasing products from dirt imaged companies even if their prices are much less than the ones produced by green imaged companies the green image is very important for business survivability in our global market a business concern associated with the green image is how to attain corporate sustainability where companies can attain both economic success and pollution prevention in their operations there is tradeoff between economic prosperity and environmental concern to attain a high level of corporate sustainability companies need to measure the current performance in terms of their operational and environmental achievements this study proposes a use of data envelopment analysis dea for such assessment the proposed dea assessment provides corporate leaders and managers with not only the measure of corporate sustainability but also information regarding how to invest for technology innovation for abatement of undesirable outputs e g co 2 as an application this study utilizes the proposed approach to measure the corporate sustainability of petroleum firms in the united states the petroleum industry is functionally separated into integrated and independent companies the integrated companies referred to as major have their large supply chains for both upstream e g exploration development and production of crude oil or natural gas and downstream e g oil tankers refineries storages and retails meanwhile the independent companies focus upon the upstream function but not the downstream in their business operations the empirical comparison between the two groups of petroleum firms identifies that the integrated companies outperform the independent companies because a large supply chain incorporated into the former group provides them with both a scale merit in their operations and an opportunity to obtain consumer s opinions on their business operations thus the large supply chain system covering business functions for upstream and downstream enhances corporate sustainability in the u s petroleum industry it is easily envisioned that the empirical findings discussed in this study are useful in preparing business strategy and industrial policy for the petroleum industry of not only the united states but also other nations involved in oil and gas production

marginal rate of transformation and rate of substitution measured by dea environmental assessment comparison among european and north american nations this study discusses the new use of dea data envelopment analysis environmental assessment to measure mrt marginal rate of transformation and rs rate of substitution among production factors e g inputs desirable and undesirable outputs to measure the degree on mrt and rs this study first examines a concept of disposability from the perspective of economic strategies to combat various environmental issues the strategies are extendable to a policy change for pollution prevention the underlying concept is separated into natural and managerial disposability under managerial disposability it is possible for us to measure an occurrence of desirable congestion or eco technology innovation considering the disposability concept this study discusses how to measure the type and magnitude of mrt and rs a problem of the mrt rs measurement is that these measures usually become unstable e g very large or small in these magnitudes because dea does not assume any functional form for economic activities to overcome such a difficulty this study equips dea environmental assessment with multiplier restriction by utilizing a unique feature on a proposed data treatment the multiplier restriction in dea has been never explored in previous works on environmental assessment in an application this study finds three important economic concerns on europe and north america first western europe outperforms eastern europe and north america in their unified efficiency measures under managerial disposability this study statistically confirms a difference between western and eastern europe but not between western europe and north america this result exhibits that eastern europe is not yet well developed at the level of the other two regions second eastern europe has exhibited mrt estimates that are different from western europe and north america the nations in eastern europe have an economic potential for industrial developments because the level of their industrial pollutions is less than that of the other two regions the potential is also found in their mrt estimates finally an interesting difference can be found in the rs estimate between eastern europe and western europe from 2008 to 2012 they have statistically exhibited a difference between the two regimes but not with north america this is because most nations in both western europe and north america have already attained a high level of economic successes so that they have a limited industrial potential under current production technology and eco technology the situation of the two regions will be changed along with new technology development in contrast eastern europe is different from the other two regions in terms of attaining such a level of social sustainability because of limited capital accumulation and limited opportunity for technology innovation

comparison among u s industrial sectors by dea environmental assessment equipped with analytical capability to handle zero or negative in production factors abstract a green image is recently an important component of corporate sustainability in modern business by extending the two previous works i e wang et al 2014 sueyoshi and wang 2014a this study discusses a new use of data envelopment analysis dea for environmental assessment by incorporating an analytical capability to handle zero and or negative in a data set the proposed approach provides us with not only new quantitative assessment on unified operational and environmental performance of firms but also information regarding how to invest for eco technology innovation for abating an amount of their industrial pollutions according to the previous studies the energy industry is an attractive investment target if desirable outputs are measured by return on assets roa as a short term concern and an amount of co 2 emission reduction the selection on a desirable output combination is important in understanding the corporate sustainability of the energy industry because it is the largest emitter among seven industry sectors examined in the previous studies however if the roa is replaced by a corporate value measured by tobin s q ratio as a long term concern the energy industry is not so attractive because it uses a very large production process so that green investment does not immediately increase the corporate value an empirical problem of these previous studies is that they have investigated only successful companies with positive roa or tobin s q ratios the analytical feature clearly indicates a methodological drawback of their studies in contrast this study pays attention to both successful companies with positive net incomes and unsuccessful companies with negative net incomes so being able to measure all aspects of their performance in a short term concern this study finds that the energy industry exhibits a high level of potential on green investment however the energy industry may be not attractive even in the short term concern i e net income partly because governmental regulations on their operation and pollution prevention efforts are stricter than the other industrial sectors this result may be seemingly inconsistent with wang et al 2014 rather the result indicates that successful energy firms can attain the corporate sustainability by investing eco technology innovation but unsuccessful ones cannot attain the sustainability even in the short term concern because they do not have large capital accumulation for eco technology investment whose importance has been first discussed by sueyoshi and goto 2010a in other words the eco technology investment for enhancing a high level of corporate sustainability depends upon an amount of net income generated by each energy firm

bank runs and institutions the perils of intervention we study ex post efficient policy responses to a run on the banking system and the ex ante incentives these responses create we show that the efficient response to a run is typically not to freeze all remaining deposits since doing so imposes heavy costs on some individuals instead once a run is underway benevolent government institutions would allow additional deposit withdrawals placing further strain on the banking system when depositors anticipate these extra withdrawals their incentive to participate in the run increases in fact ex post efficient interventions can generate the conditions necessary for a self fulfilling run to occur jel g21 g8

assessing regional environmental efficiency in china with distinguishing weak and strong disposability of undesirable outputs abstract china has developed a remarkable economic growth in the past 30 years by accompanying with undesirable outputs the assumptions of weak and strong of undesirable outputs have become the focus discussion in data envelopment analysis dea models to have a comprehensive environmental efficiency measurement this paper proposes three dea models considering weak disposability strong disposability and distinguishing weak and strong disposability of undesirable outputs respectively we further combine with the malmquist luenberger productivity index to assess the environmental efficiency and the dynamic change trend of 30 provinces in china from 2005 to 2014 the results show that distinguishing technical features of undesirable outputs makes a significant difference to final environmental efficiency score at different regions the environmental efficiency of the whole nation however does not show any increasing trend during the ten years enhancing environmental efficiency of central and west area is an urgent task for chinese government the change trend of malmquist luenberger productivity index and technological change shows a similar shape technical progress is the main driving force to enhance the environmental efficiency relevant suggestions are presented for improving the regional environmental efficiency in china in the future

dea radial and non radial models for unified efficiency under natural and managerial disposability theoretical extension by strong complementary slackness conditions abstract this study proposes a use of data envelopment analysis dea for environmental assessment all radial and non radial models are discussed under natural and managerial disposability the natural disposability implies corporate strategy by which a firm attempts to decrease an input vector to decrease a vector of undesirable outputs given the decreased input vector a firm attempts to increase a vector of desirable outputs as much as possible this type of strategy supported by economists indicates negative adaptation to a regulation change on undesirable outputs in contrast the managerial disposability indicates opposite strategy by increasing the input vector this disposability expresses corporate strategy by which a firm considers the regulation change as a new business opportunity a firm attempts to improve its performance by utilizing new environmental technology and or new management this type of strategy supported by corporate strategists in u s business schools indicates positive adaptation to the regulation change on undesirable outputs using the proposed dea assessment this study examines the relationship among energy consumption economic development and environmental protection in japanese prefectures to theoretically extend the use of dea for environmental assessment this study incorporates strong complementary slackness conditions scscs into the proposed radial models the incorporation of scscs has three methodological strengths first dea scscs can handle an occurrence of multiple reference sets and multiple projections second the incorporation of scscs makes it possible to restrict dual variables multiples in a specific range without any prior information finally dea scscs can bypass the conventional procedure i e a radial model combined with an additive model used for dea radial measurement

diffusing coordination risk in a regime change game privately informed agents sequentially decide whether to attack without observing others previous actions to dissuade them from attacking a principal adopts a dynamic information disclosure policy frequent viability tests a viability test publicly discloses whether the regime has survived the previous attacks when such tests are sufficiently frequent in the unique cutoff equilibrium agents never attack if the regime passes the latest test regardless of their private signals we apply this theory to demonstrate that a borrower can eliminate panic based runs by sufficiently diffusing the rollover choices across different maturity dates

eco efficiency analysis of power plants an extension of data envelopment analysis abstract in public discussion on environmental policy the notion of eco efficiency is often used the joint production of goods and undesirable outputs such as pollutants which may not be freely disposable without costs causes difficulties to measure the overall performance of the firm because of the absence of market prices for the undesirable outputs we are not able to estimate the environmental costs some of the measurement and evaluation difficulties can be overcome by employing data envelopment analysis dea as the efficiency measurement vehicle we propose the use of two different approaches in the first approach we start by decomposing the problem into two parts 1 the problem of measuring technical efficiency as the relation of the desirable outputs to the inputs and 2 the problem of measuring so called ecological efficiency as the relation of the desirable outputs to the undesirable outputs separately those two efficiency indicators are then combined in the second approach we treat pollutants as the inputs in the sense that we wish to increase desirable outputs and decrease pollutants and inputs the approaches are applied to the problem of measuring the efficiency of 24 power plants in a european country

japanese fuel mix strategy after disaster of fukushima daiichi nuclear power plant lessons from international comparison among industrial nations measured by dea environmental assessment in time horizon abstract on june 1 2015 the japanese government has announced that the fuel mix will consist of nuclear generation with a range between 20 and 22 and renewable generation with a range between 22 and 24 of the total electricity generation by 2030 a difficulty in understanding the governmental future energy plan is that it does not contain any scientific evidence concerning why japan needs to maintain the amount of nuclear generation and that of renewable at the level between 20 and 22 and between 22 and 24 respectively to investigate the future energy plan this study uses data envelopment analysis dea as a methodology the proposed dea approach incorporates the property of translation invariance the property indicates that an efficiency measure should not be influenced even if inputs and or outputs are shifted toward a same direction by adding or subtracting a specific real number the property makes it possible that we can evaluate the performance of organizations whose production factors i e inputs desirable and undesirable outputs contain many zeros and negative values in a data set such an occurrence of zero and negative in production factors is widely observed in many dea performance evaluations this study first uses the desirable property for dea environmental assessment in a time horizon the proposed dea environmental assessment identifies that the reasonable ranges for japanese future fuel mix are a combustible fuel generation within the range between 34 5 and 56 1 b hydro generation within the range between 22 4 and 40 5 c nuclear generation within the range between 10 4 and 13 7 d pumped hydro generation within the range between 3 9 and 6 9 and e renewable generation within the range between 3 7 and 8 4 all of which are measured by these generation capacities it is clearly identified that the future fuel mix proposed by the japanese government is inconsistent with the estimated one which we determine by relatively comparing it with the energy structures of 33 industrial nations the comparison indicates that the japanese future energy plan will be too ambitious to implement the future goal it is easily envisioned that the energy plan will have a considerable difficulty in future it is hoped that the electric power industry can access drastic technological advancements including eco technology innovation and then japan will be able to change the future direction on fuel mix as the government expects

monotone equilibria in bayesian games of strategic complementarities for bayesian games of strategic complementarities we provide a constructive proof of the existence of a greatest and a least bayes nash equilibrium each one in strategies that are monotone in type our main assumptions besides strategic complementarities are that each player s payoff displays increasing differences in own action and the profile of types and that each player s interim beliefs are increasing in type with respect to first order stochastic dominance e g types are affiliated the result holds for general action and type spaces single multi or infinite dimensional continuous or discrete and no prior is assumed we also provide the following comparative statics result the greatest and least equilibria are higher if there is a first order stochastic dominant shift in the interim beliefs we apply this result to strategic information revelation in games of voluntary disclosure

models of currency crises with self fulfilling features the discomfort a government suffers from speculation against its currency determines the strategic incentives of speculators and the scope for multiple currency market equilibria after describing an illustrative model in which high unemployment may cause an exchange rate crisis with self fulfilling features the paper reviews some other self reinforcing mechanisms recent econometric evidence seems consistent with the practical importance of these mechanisms

contagion of self fulfilling financial crises due to diversification of investment portfolios abstract we look at two countries that have independent fundamentals but share the same group of investors each country might face a self fulfilling crisis agents withdrawing their investments fearing that others will a crisis in one country reduces agents wealth this makes them more averse to the strategic risk associated with the unknown behavior of other agents in the second country increasing their incentive to withdraw their investments consequently the probability of a crisis there increases this generates a positive correlation between the returns in the two countries since diversification affects returns in our model its welfare implications are non trivial

public conservation land and employment growth in the northern forest region we quantify the effect that public conservation lands have on employment growth in the northern forest region of the united states a model of simultaneous employment and net migration growth is estimated with data on non metropolitan counties from 1990 to 1997 exogenous variables include the 1990 share of the land base in public conservation uses we find that net migration rates were higher in counties with more conservation lands but the effects are relatively small no significant effect on employment growth is detected as well variables measuring changes in public timber harvests have no effect on employment growth

optimal path for controlling co2 emissions in china a perspective of efficiency analysis this paper examines the optimal control of co2 emissions from a perspective of efficiency analysis several centralized data envelopment analysis dea models are introduced to study the optimal allocation of co2 emissions under spatial temporal and spatial temporal allocation strategies respectively the models have been used to determine the optimal paths for controlling co2 emissions at provincial and regional levels in china a sensitivity analysis of the optimal path on the emission control coefficient under spatial temporal allocation strategy is further carried out our empirical results show that more developed regions should take emission reduction responsibility earlier than less developed regions in china of the three allocation strategies spatial temporal allocation strategy seems to be a better choice for achieving the optimal control of co2 emissions at country level since it is more encompassing by allowing both timing and spatial substitutions it is also found that there exists an inverted u shape relationship between the aggregate optimal gdp and the emission control coefficient which shows that modest emission reduction policy might be more appropriate for china in order to achieve the joint goals of economic development and co2 emission reduction

returns to damage under undesirable congestion and damages to return under desirable congestion measured by dea environmental assessment with multiplier restriction economic and energy planning for social sustainability in china this study discusses the concept of natural and managerial disposability from their economic and methodological implications on social sustainability development then it explores their analytical linkages to a concept on congestion the concept is classified into undesirable congestion uc under natural disposability and desirable congestion dc under managerial disposability considering the two disposability concepts this study compares between returns to damage rtd under uc and damages to return dtr under dc conceptually uc and dc are conceptually different from rtd and dtr although they are closely related to each other group an occurrence of the former measures is identified by a single negative multiplier i e dual variable in contrast the latter measures are associated with multiple negative multipliers and an intercept of a supporting hyperplane on a production and pollution possibility set thus an occurrence of uc and dc is a necessary condition but not a sufficient condition on rtd and dtr respectively in terms of the number of negative multipliers on production factors to document the practicality of the proposed approach this study applies it to chinese economic and environmental assessment for its economic and energy planning for social sustainability development this study identifies four important findings first the chinese government has historically paid attention to the economic prosperity but not paying serious attention on the environmental pollution e g air pollution second there was an increasing trend in improving the two components i e economic and environmental performance measures regarding social sustainability third china s economic and energy policy concerns have been focused upon well developed municipalities e g beijing and shanghai and large provinces therefore it is an important strategy for the government to allocate economic and energy resources to other provinces so that china can reduce the industrial and regional imbalances as a result china can enhance the level of social sustainability finally the municipalities need strict regulation on traffic control in these metropolitan areas and a fuel mix shift from coal combustion to natural gas and renewable energies e g solar water and nuclear generations the fuel mix strategy along with the structure change e g from manufacturing to service and from public to private energy firms will be a major industrial policy issue for china in near future

coordination and delay in global games abstract what is the effect of offering agents an option to delay their choices in a global coordination game we address this question by considering a canonical binary action global game and allowing players to delay their irreversible decisions those that delay have access to accurate private information at the second stage but receive lower payoffs we show that as noise vanishes as long as the benefit to taking the risky action early is greater than the benefit of taking the risky action late the introduction of the option to delay reduces the incidence of coordination failure in equilibrium relative to the standard case where all agents must choose their actions at the same time we outline the welfare implications of this finding and probe the robustness of our results from a variety of angles

returns to scale and damages to scale on u s fossil fuel power plants radial and non radial approaches for dea environmental assessment abstract this study proposes a new use of data envelopment analysis dea for environmental assessment paying attention to a methodological bias i e different methods produce different results dea is analytically classified into radial and non radial approaches the radial approach determines the level of unified operational and environmental efficiency by measuring an inefficiency score the score indicates the distance of a projection from an observed performance to an efficiency frontier in contrast the non radial approach determines the level of unified efficiency by measuring a total amount of slacks because each slack indicates inefficiency to avoid the methodological bias this study considers the use of radial and non radial approaches in this study we consider a production process where all organizations produce not only desirable good but also undesirable bad outputs as a result of their business operations to unify the two types of outputs this study discusses the concept of disposability which is separated into natural and managerial disposability the natural disposability indicates negative adaptation to a regulation change on undesirable outputs in contrast the managerial disposability indicates corporate strategy by which a firm considers the regulation change as a new business opportunity a firm attempts to improve its unified efficiency by utilizing new environmental technology and or new management this type of strategy indicates positive adaptation to the regulation change under the two disposability concepts this study discusses how to measure rts returns to scale under natural disposability and dts damages to scale corresponding to rts on undesirable outputs under managerial disposability the two scale measures are analytically discussed by the proposed radial and non radial approaches with scscs or without scscs where scscs indicate strong complementary slackness conditions an illustrative example on u s fossil fuel power plants indicates a policy implication that they need to introduce new technology for environmental protection this study also discusses a necessity of examining a methodological bias in energy studies empirical findings identified in this study document the practicality of the proposed approaches to measure rts dts

dynamic global games of regime change learning multiplicity and the timing of attacks global games of regime change coordination games of incomplete information in which a status quo is abandoned once a sufficiently large fraction of agents attack it have been used to study crises phenomena such as currency attacks bank runs debt crises and political change we extend the static benchmark examined in the literature by allowing agents to take actions in many periods and to learn about the underlying fundamentals over time we first provide a simple recursive algorithm for the characterization of monotone equilibria we then show how the interaction of the knowledge that the regime survived past attacks with the arrival of information over time or with changes in fundamentals leads to interesting equilibrium properties first multiplicity may obtain under the same conditions on exogenous information that guarantee uniqueness in the static benchmark second fundamentals may predict the eventual fate of the regime but not the timing or the number of attacks finally equilibrium dynamics can alternate between phases of tranquility where no attack is possible and phases of distress where a large attack can occur even without changes in fundamentals

unique equilibrium in a model of self fulfilling currency attacks even though self fulfilling currency attacks lead to multiple equilibria when fundamentals are common knowledge we demonstrate the uniqueness of equilibrium when speculators face a small amount of noise in their signals about the fundamentals this unique equilibrium depends not only on the fundamentals but also on financial variables such as the quantity of hot money in circulation and the costs of speculative trading in contrast to multiple equilibrium models our model allows analysis of policy proposals directed at curtailing currency attacks

a literature study for dea applied to energy and environment abstract this study systematically summarizes previous research efforts on data envelopment analysis dea applied to energy and environment in the past four decades including concepts and methodologies on dea environmental assessment industrial developments are very important for all nations in terms of their economic prosperities a problem is that the development produces various pollutions on air water and other types of contaminations all of which are usually associated with our health problems and climate changes thus it is necessary for us to consider how to make a balance between economic success and pollution mitigation to maintain a high level of social sustainability in the world it is widely considered that dea is one of the methodologies to examine the level of sustainability this study examines a recent research trend on dea applications from 1980s to 2010s nowadays many researchers have paid serious attention on how to combat various difficulties in the areas of energy and environment as a result the number of articles on dea applications on energy and environment has dramatically increased particularly after 2000s however it is true that dea has strengths and drawbacks in the applications therefore it is very important for us to carefully use dea for guiding large policy issues and business strategies such as the global warming and climate change an underlying premise of this study is that technology innovation in engineering and natural science may solve various problems by linking it with political and managerial efforts the use of dea provides a methodological linkage among them so enhancing the practicality in mitigating problems due to climate change and environmental pollutions this literature study along with a summary on conceptual and methodological developments provides us with guidelines for our future research works on dea on energy and environment issues

dea environmental assessment on u s industrial sectors investment for improvement in operational and environmental performance to attain corporate sustainability abstract environmental assessment has recently become an important business concern because consumers are interested in environmental protection they try to avoid purchasing products from dirt imaged companies which do not pay attention to environmental protection even if their prices are much less than the ones produced by green imaged companies thus a green image is very important for corporate survivability in a global market this study considers corporate sustainability indicating that companies need to consider both economic prosperity and pollution prevention in their operations to discuss the issue from corporate strategy for modern business this study discusses a use of data envelopment analysis dea for environmental assessment by focusing upon research and development r d strategy as well as technology innovation and selection for reduction of undesirable outputs e g co 2 emission this type of research has never been explored in previous studies it is easily envisioned that the proposed dea environmental assessment will guide corporate leaders in identifying how to invest for technology innovation to reduce an amount of undesirable outputs to discuss the practicality this study applies the proposed approach to 153 observations on s p 500 corporations in 2012 and 2013 the empirical investigation confirms that investors pay more serious attention to company s green image and the reality for a long run sustainability than profitability in a short run concern furthermore the energy sector is the best investment target among seven industrial sectors examined in this study the measurement of corporate sustainability can serve as an empirical basis in selecting what type of technology is fitted for a specific industry

who matters in coordination problems we consider a common investment project that is vulnerable to a self fullling coordination failure and hence is strategically risky based on their private information agents who have heterogeneous investment incentives form expectations or sentiments about the project s outcome we nd that the sum of these sentiments is constant across dierent strategy proles and it is independent of the distribution of incentives as a result we can think of sentiment as a scarce resource divided up among the dierent payo types applying this nding we show that agents who benet little from the project s success have a large impact on the coordination process the agents with small benets invest only if their sentiment towards the project is large per unit investment cost as the average sentiment is constant a subsidy decreasing the investment costs of these agents will free up a large amount of sentiment provoking a large impact on the whole economy intuitively these agents insensitive to the project s outcome and hence to the actions of others are inuential because they modify their

data envelopment analysis for environmental assessment comparison between public and private ownership in petroleum industry abstract environmental assessment recently becomes a major policy issue in the world this study discusses how to apply data envelopment analysis dea for environmental assessment an important feature of the dea environmental assessment is that it needs to classify outputs into desirable good and undesirable bad outputs because private and public entities often produce not only desirable outputs but also undesirable outputs as a result of their production activities this study proposes the three types of unification for dea environmental assessment by using non radial dea models the first unification considers both an increase and a decrease in the input vector along with a decrease in the direction vector of undesirable outputs this type of unification measures unified efficiency the second unification considers a decrease in an input vector along with a decrease in the vector of undesirable outputs this type of unification is referred to as natural disposability and measures unified efficiency under natural disposability the third unification considers an increase in an input vector but a decrease in the vector of undesirable outputs this type of unification is referred to as managerial disposability and measures unified efficiency under managerial disposability all the unifications increase the vector of desirable outputs to document their practical implications this study has applied the proposed approach to compare the performance of national oil firms with that of international oil firms this study identifies two important findings on the petroleum industry one of the two findings is that national oil companies under public ownership outperform international oil companies under private ownership in terms of unified operational and environmental efficiency and unified efficiency under natural disposability however the performance of international oil companies exhibits an increasing trend in unified efficiency the other finding is that national oil companies need to satisfy the environmental standard of its own country while international oil companies need to satisfy the international standard that is more restricted than the national standards as a consequence international oil companies outperform national oil companies in terms of unified efficiency under managerial disposability

congestion measurement under different policy objectives an analysis of chinese industry abstract in recent years the economic performance of chinese industry has improved significantly however the congestion caused by excessive investment has plagued its sustainable development in order to make full use of resources it is necessary for the chinese government to measure industrial congestion from different perspectives however most studies for measuring congestion only consider desirable outputs even if in practice these are always accompanied by undesirable outputs in this paper three policy objectives are proposed for industrial development in china the economic priority the environmental priority and the economic and environmental win win three new data envelopment analysis dea models with undesirable outputs were built for measuring undesirable congestion desirable congestion and double congestion respectively for these policy objectives these approaches can not only identify congestion situation but also calculate the total amount of congestion and were applied to an analysis of the congestion of regional industries in china results show that most regions have some form of longstanding input congestion under different policy objectives with this resulting in serious waste of resources based on the results obtained some suggestions for sustainable industrial development in china are proposed

radial and non radial approaches for environmental assessment by data envelopment analysis corporate sustainability and effective investment for technology innovation abstract environmental assessment and protection are important concerns in modern business consumers are interested in corporate effort and investment for environmental protection it can be easily imagined that they avoid purchasing products from dirty imaged companies even if their prices are much less than the ones produced by green imaged companies a green image is recently a very important concern for corporate survivability in a competitive global market by extending previous works on environment assessment and corporate sustainability where companies need to consider both economic prosperity and pollution prevention in their operations this study discusses a new use of data envelopment analysis dea for environmental assessment by utilizing its radial and non radial measurements the proposed radial and non radial approaches may guide corporate leaders managers and policy makers by providing not only quantitative assessment on their efforts for environmental protection but also information regarding how to invest for technology innovation on abatement of undesirable outputs the empirical investigation identifies that the green investment in u s energy industry is useful for improving its unified operational and environmental performance if operational performance is measured by roa return on assets and an amount of co 2 emission reduction because the industry is the largest emitter among seven industry sectors examined in this study the green investment makes it possible that firms can increase their net incomes by a good corporate image however if the financial measure is replaced by a corporate value i e tobin s q ratio mainly measured by stock price the energy industry does not exhibit the best investment opportunity because the effect of green investment is limited on enhancing its corporate value the energy industry is a very large process industry so that the green investment does not immediately increase its corporate value as found in the other industrial sectors such as information technology industry

tightening environmental standards the benefit cost or the no cost paradigm ms ff ichael porter and claas van der linde have written a paper that is interesting and to us at least somewhat astonishing it is a defense of environmental regulation indeed an invitation to more stringent regulation that makes essentially no reference to the social benefits of such regulation this approach contrasts starkly with the methods that economists and other policy analysts have traditionally used when assessing environmental or other regulatory programs the traditional approach consists of comparing the beneficial effects of regulation with the costs that must be borne to secure these benefits for environmental regulation the social benefits include the reductions in morbidity or premature mortality that can accompany cleaner air the enhanced recreational opportunities that can result from water quality improvements the increased land values that might attend the cleanup of a hazardous waste site the enhanced vitality of aquatic ecosystems that might follow reductions in agricultural pesticide use or any of the other potentially significant benefits associated with tighter standards from this benefit cost approach emerges the standard tradeoff discussed in virtually every economics textbook porter and van der linde deny the validity of this approach to the analysis of environmental regulation claiming it to be an artifact of what they see as a static mindset in their view economists have failed to appreciate the capacity of

toward a new conception of the environment competitiveness relationship accepting a fixed trade off between environmental regulation and competitiveness unnecessarily raises costs and slows down environmental progress studies finding high environmental compliance costs have traditionally focused on static cost impacts ignoring any offsetting productivity benefits from innovation they typically overestimated compliance costs neglected innovation offsets and disregarded the affected industry s initial competitiveness rather than simply adding to cost properly crafted environmental standards can trigger innovation offsets allowing companies to improve their resource productivity shifting the debate from pollution control to pollution prevention was a step forward it is now necessary to make the next step and focus on resource productivity

environmentally sensitive productivity growth a global analysis using malmquist luenberger index abstract we examine conventional and environmentally sensitive total factor productivity tfp in 41 developed and developing countries over the period of 1971 to 1992 due to the non availability of reliable input and co 2 emissions price data the study uses directional distance function to derive malmquist luenberger ml productivity index the index allows us to decompose the tfp into measures of technical and efficiency changes dea is used to compute the directional distance functions we find that tfp index value is not different when we account for the co 2 emissions relative to the situation when they are freely disposable but for the components of tfp change technical and efficiency changes the null hypothesis of whether the indexes are the same under two different scenarios cannot be accepted issues of catch up and convergence or in some cases possible divergence in productivity are examined within a global framework the paper also studies the impact of openness on conventional and environmentally sensitive measures of productivity

observations on cooperation we study environments in which agents are randomly matched to play a prisoner s dilemma and each player observes a few of the partner s past actions against previous opponents we depart from the existing related literature by allowing a small fraction of the population to be commitment types the presence of committed agents destabilizes previously proposed mechanisms for sustaining cooperation we present a novel intuitive combination of strategies that sustains cooperation in various environments moreover we show that under an additional assumption of stationarity this combination of strategies is essentially the unique mechanism to support full cooperation and it is robust to various perturbations finally we extend the results to a setup in which agents also observe actions played by past opponents against the current partner and we characterize which observation structure is optimal for sustaining cooperation

multilateral productivity comparisons when some outputs are undesirable a nonparametric approach multilateral productivity comparisons of firms producing multiple outputs some of which are undesirable are obtained by making two modifications to the standard farrell approach to efficiency measurement the restriction that production technology satisfy strong disposability of outputs is relaxed to allow for the fact that undesirable outputs may be freely disposable and the efficiency measures are modified to allow for an asymmetric treatment of desirable and undesirable outputs performance measures that satisfy these requirements are calculated as solutions to programming problems the methodology is applied to a sample of mills producing paper and pollutants

environmental assessment for corporate sustainability by resource utilization and technology innovation dea radial measurement on japanese industrial sectors abstract this study proposes a new use of dea data envelopment analysis radial approach to examine the corporate sustainability of japanese industrial sectors the concept of corporate sustainability is measured by its subcomponent measures including uen unified efficiency under natural disposability uem unified efficiency under managerial disposability uenm unified efficiency under natural and managerial disposability uei unified efficiency for intermediate measurement and uenm dc unified efficiency under natural and managerial disposability with desirable congestion among the five measures the uei examines a degree of how each firm can efficiently utilize its resources the uenm dc examines a degree of how the firm can reduce an amount of undesirable outputs by technology innovation and or managerial change such a combined use between uei and uenm dc has been never explored in dea environmental assessment the empirical results obtained from the proposed approach have identified two important implications one of the two implications is that the japanese energy industry has been long under governmental regulation so that energy firms do not have corporate governance capabilities at the level of other industrial sectors which are competing in a global market in particular the implication is applicable to japanese electric power firms it is necessary for them to change their corporate governances e g by adding new executive board members who have international experience and or woman executives as widely found in american and european energy industries so that they can pay attention to consumers not regulatory agencies of the japanese government the other implication is that technology innovation can more effectively improve the performance of the energy sector employing high efficiency and low carbon generation technologies to achieve desirable fuel mix is essential for improving the corporate sustainability of the japanese energy sector

weak and strong disposability vs natural and managerial disposability in dea environmental assessment comparison between japanese electric power industry and manufacturing industries the economic concept of weak and strong disposability has long dominated studies on dea data envelopment analysis environmental assessment this study reviews the two disposability concepts from their conceptual and methodological implications in particular this study is interested in the concept of weak disposability because the concept is believed to have an analytical capability to measure an occurrence of congestion the two economic concepts on disposability accepted by production economists are replaced by natural and managerial disposability in this study the natural disposability implies an environmental strategy by which a firm attempts to decrease an input vector to reduce a vector of undesirable outputs given the decreased input vector a firm attempts to increase a vector of desirable outputs as much as possible this type of strategy indicates negative adaptation in contrast the managerial disposability indicates an opposite strategy by increasing the input vector this disposability expresses an environmental strategy by which a firm considers a regulation change as a new business opportunity a firm attempts to improve its unified performance by utilizing new clean air technology and or new management the strategy indicates positive adaptation considering the two groups of disposability this study compares between weak strong disposability and natural managerial disposability in terms of their conceptual and methodological differences focusing upon the concept of congestion and technology innovation furthermore using the concept of natural and managerial disposability this study compares japanese electric power firms with manufacturing firms this study finds that the manufacturing firms outperform the electric power firms under natural disposability an opposite result is found under managerial disposability this empirical study also finds that the two groups of japanese firms have attained desirable good congestion due to technology innovation based upon such empirical results this study identifies two policy implications one of the two implications is that the two groups of japanese industries have attained a high level of technology innovation by a result of environmental regulation the other is that the electric power industry operates more efficiently to reduce the co2 emission than the manufacturing industries

photovoltaic power stations in germany and the united states a comparative study by data envelopment analysis abstract this study compares photovoltaic pv power stations between germany and the united states to examine which country more efficiently provides renewable energy in their usages for the comparative analysis this study utilizes data envelopment analysis dea as a methodology to evaluate the performance of pv power stations from the perspective of both solar and land usages a total of one hundred sixty pv power stations eighty in germany and eighty in the united states are used for this comparison the demand for sustainable energy and energy security has been rapidly increasing over the past decade because of concerns about environment and limited resources pv solutions are one of many renewable technologies that are being developed to satisfy a recent demand of electricity germany is the world s top installer and consumer of pv power and the united states is one of the top five nations germany leads the way in installed pv capacity even though the nation has less solar resources and land area due to limited solar resources low insolation and sunshine and land area the united states should have a clear advantage over germany however the empirical result of this study exhibits that pv power stations in germany operate more efficiently than those of the united states even if the latter has many solar and land advantages the surprising result indicates that the united states has room for improvement when it comes to utilizing solar and land resources and needs to reform the solar policy for such a purpose feed in tariff fit may be an effective energy policy at the state level in the united states because the fit provides investors such as utility companies and other types of energy firms with financial incentives to develop large pv power stations and generation facilities for other renewable energy it may be true that the fit is a powerful policy tool to promote pv and other renewable installation and support a reduction of an amount of greenhouse gases however the fit poses a large financial burden to consumers with a massive increase in renewable energy installation like in germany and spain therefore it is necessary for the united states to consider how to align a policy with a speed of technology innovation to balance between the benefit and the cost derived from the policy implementation on renewable energy in addition this study discusses policy issues regarding cost allocation due to fit among stakeholders related to the electric power industry at the end this study proposes a new type of wholesale electricity market that provides simultaneous trading on electricity and greenhouse gas emissions by fully utilizing modern computer science technology that exists in universities and national laboratories of the united states

airline dynamic efficiency measures with a dynamic ram with unified natural managerial disposability abstract in this paper we propose a dynamic range adjusted measure with unified natural managerial disposability to evaluate the dynamic efficiency of 29 airlines during 2009 2015 in a dynamic period the new model can judge automatically whether the airline should be under natural disposability or managerial disposability in the premise of optimizing the overall efficiency we get some findings 1 scandinavian has the highest overall efficiency among these 29 airlines while norwegian s overall efficiency is the least 2 improving undesirable outputs is not the most urgent work of these airlines 3 in order to optimize the overall efficiency most airlines should be under managerial disposability 4 most airlines efficiencies have no obvious fluctuation in this period

dea radial measurement for environmental assessment and planning desirable procedures to evaluate fossil fuel power plants abstract energy policy depends on a proper use of methodology in guiding a large energy issue such as the global warming and climate change dea is one of such methodologies that are often used for preparing environmental policy which is closely linked to various energy issues unfortunately the use of dea applied to environmental policy is insufficient often misguiding policy makers and other individuals who are involved in energy issues this study provides three guidelines for a use of dea in preparing environmental assessment first it is important to prepare both primal and dual formulations to confirm whether information regarding all production factors i e inputs desirable and undesirable outputs is fully utilized in dea assessment second dea has model variations in radial and non radial measurements it is necessary for us to examine environmental issues by different models in order to avoid a methodological bias existing in those empirical studies finally dea environmental assessment needs to incorporate the concept of natural and managerial disposability the natural disposability indicates that a firm negatively adapts a regulation change on undesirable outputs in contrast the managerial disposability indicates that a firm positively adapts the regulation change because the firm considers the regulation change as a new business opportunity

pricing network effects the increase in the information that firms can collect or purchase about network effects across consumers motivates two important questions how does a firm s pricing strategy react to detailed information on network effects are the availability and use of such information beneficial or detrimental to consumer surplus we develop a model in which a monopoly sells a network good and price discriminates based on information about consumers influence and consumers susceptibility to influence the monopoly optimally offers consumers price discounts for their influence and charges price premia for their susceptibility the price premia and the price discounts are simple functions of the pattern of network effects we determine under which conditions relative to uniform price consumer surplus increases and we characterize the value of information on network effects for the monopoly

returns to scale and damages to scale under natural and managerial disposability strategy efficiency and competitiveness of petroleum firms environmental assessment recently becomes a major policy issue all over the world this study discusses how to use data environment analysis dea for environmental assessment for planning corporate strategy and international competitiveness an important feature of dea environmental assessment is that it classifies outputs into desirable good and undesirable bad outputs because all private and public entities produce not only desirable outputs but also undesirable outputs as a result of their production activities this study proposes the two types of output unification for dea environmental assessment by using a non radial model one of the two output unifications is that it considers a decrease in an input vector along with a decrease in the vector of undesirable outputs this type of unification is referred to as natural disposability the other unification considers an increase in an input vector but a decrease in the vector of undesirable outputs this type of strategy is referred to as managerial disposability both unifications increase the vector of desirable outputs after developing the two concepts on disposability this study theoretically explores how to measure returns to scale rts under natural disposability and damages to scale dts under managerial disposability to document the practicality of the proposed approach this study applies it to compare the performance of national oil firms with that of international oil companies this study identifies four important findings on the petroleum industry first national oil companies outperform international oil companies in the unified efficiency under natural disposability second international oil companies outperform national oil companies in the unified efficiency under managerial disposability third national oil firms exhibit a mixed result on rts while international oil firms exhibit decreasing rts finally both national and international oil companies exhibit increasing dts implying that all oil firms need to decrease their operational sizes for improving their environmental performance on co2 emission as an alternative strategy the result suggests that they need to introduce technology innovation e g clean air technology into their business operations the technology based strategy has more practicality than the size reduction in their operations

on money as a medium of exchange we analyze economies in which individuals specialize in consumption and production and meet randomly over time in a way that implies that trade must be bilateral and quid pro quo nash equilibria in trading strategies are characterized certain goods emerge endogenously as media of exchange or commodity money depending both on their intrinsic properties and on extrinsic beliefs there are also equilibria with genuine fiat currency circulating as the general medium of exchange we find that equilibria are not generally pareto optimal and that introducing fiat currency into a commodity money economy may unambiguously improve welfare velocity acceptability and liquidity are discussed

methodological comparison among radial non radial and intermediate approaches for dea environmental assessment abstract this study compares three dea approaches for environmental assessment all of which are designed to examine the level of simultaneous achievement on economic prosperity and environmental protection so measuring the degree of sustainability development dea standing for data envelopment analysis has been widely applied for performance assessment in the past five decades a new type of applications is referred to as dea environmental assessment and it measures the performance of many organizations that utilize inputs to produce not only desirable outputs e g electricity but also undesirable outputs e g co 2 in the previous studies dea based performance evaluation for environment assessment is methodologically classified into radial or non radial category recently a new intermediate approach analytically locating between the radial and non radial measures has been proposed as the third alternative a use of the intermediate approach has several unique features all of which cannot be found in the radial and non radial ones the new approach measures the degree of unified inefficiency on each production factor and determines the level of total unified inefficiency from the average of the sum of these inefficiency scores this study discusses the analytical features by comparing the intermediate approach with the radial and non radial ones the methodological comparison attempts to convey a message that dea is indeed an important methodology but not perfect rather it is an approximation approach to examine the performance of various organizations many dea applications on energy and environment often suffer from a methodological bias implying that different approaches produce different empirical results thus in guiding a large policy issue such as the global warming and climate change it is necessary for us to compare several different approaches e g models and concepts to derive a reliable empirical suggestion the importance of such a message is applicable to not only dea but also the other types of empirical research in natural and social sciences therefore this study discusses the methodological bias issue from the practicality of the three dea approaches in assessing various concerns on energy and environment

china s regional sustainability and diversified resource allocation dea environmental assessment on economic development and air pollution abstract environmental protection including the prevention of air pollution and health hazard materials such as pm2 5 and pm10 is now a very serious policy issue in china after attaining the rapid economic growth and development the pm stands for particular matter indicating the size of both solid particles and liquid droplets found in air unfortunately the economic development has produced a serious healthcare problem in not only china and other surrounding nations to enhance people s healthcare and appeal a good national image to the world china is recently looking for the new industrial and environmental policy direction to attain social sustainability in terms of economic development and environmental prevention to discuss policy implications on the new policy direction this study utilizes data envelopment analysis dea for assessment on its regional performance by incorporating pm2 5 and pm10 as undesirable outputs along with two disposability concepts i e natural disposability and managerial disposability no previous dea study has incorporated the amount of pm2 5 and pm10 in empirical investigation using a simulated data set for the period of 2013 2014 this study measures the efficiency of municipality cities under four different types of regional classifications the empirical results indicate that the chinese government should distribute its economic resources to cities which locate in the northwest region including lanzhou xining yinchuan and urumqi and reinforce more strict regulation on energy consumptions for environmental prevention in major cities e g beijing tianjin shanghai and chongqing the industrial policy change from the economic growth to the environment protection is essential for the future of china which is currently the second largest economic power in the world the environmental protection can enhance the china s image of contributing in economics industry and environmental protection to all other nations it can be envisioned that the new policy effort reduces the regional imbalance and increases the social sustainability in china the empirical findings and policy implications discussed in this study are applicable to not only china but also other industrial and developing nations and those are useful in guiding their industrial and environmental policy development

contracting with externalities the paper studies inefficiencies arising in contracting between one principal and n agents when the utility of each agent depends on all agents trades with the principal when the principal commits to a set of publicly observable bilateral contract offers the arising inefficiency is due entirely to the externalities imposed on non signers in contrast when the principal s offers are privately observed the distortion is due to the externalities given agents equilibrium trades comparison of the two externalities determines the relative efficiency of the two contracting regimes in both cases we show that when n is large each agent can be treated as non pivotal provided that appropriate continuity assumptions are satisfied we also study the case in which the principal can condition each agent s trade on other agents messages we characterize the set of such mechanisms in which each agent s participation is voluntary when the principal can commit to any such mechanism she implements the first best outcome while threatening each deviator with the harshest possible punishment however in the presence of noise that goes to zero slower than n goes to infinity in the limit we obtain a generally inefficient outcome in which each agent feels non pivotal

coordinated bubbles and crashes abstract in a market with information friction investors strategically consider the actions of others and evolutionarily switch between fundamental and technical strategies to maximize their payoffs the collective actions of all investors exert feedback on asset price which affects investors subsequent actions we find that investors have the incentive to adopt fundamental strategy to restore market efficiency only if the mispricing is sufficiently large when investors fail to coordinate on the fundamental strategy market inefficiency increases which blows the bubble as market inefficiency grows the coordination on fundamental strategy strengthens which eventually bursts the bubble

environmental assessment by dea radial measurement u s coal fired power plants in iso independent system operator and rto regional transmission organization abstract the economic concept of weak and strong disposability on undesirable outputs dominated the previous discussions on dea data envelopment analysis radial measurement for environmental assessment this study reexamines the economic concept from the perspective of corporate strategies on how to adapt a regulation change on undesirable outputs the economic concept of disposability conventionally accepted by production economists is replaced by natural and managerial disposability in this study the natural disposability implies an environmental strategy that a firm attempts to decrease an input vector to reduce a vector of undesirable outputs given the decreased input vector the firm attempts to increase a vector of desirable outputs as much as possible this type of strategy indicates negative adaptation meanwhile the managerial disposability indicates an opposite strategy by increasing the input vector this disposability expresses an environmental strategy by which a firm considers a regulation change on undesirable outputs as a new business opportunity a firm attempts to improve its unified operational and environmental performance by utilizing new technology and or new management the strategy indicates positive adaptation considering the two types of disposability this study discusses how to measure unified efficiency under natural and managerial disposability by dea radial models to document the practicality of the proposed dea environmental assessment this study applies it to compare the performance of u s coal fired power plants under isos rtos independent system operators regional transmission organizations with that of the other power plants not belonging to any organization this study identifies two empirical findings one of the two findings is that the latter coal fired power plants outperform the former power plants belonging to isos rtos in terms of three efficiency measures this result indicates that isos and rtos do not provide an effective coordination for coal fired power plants at the level that can be found in the other power plants the other finding is that there is technological improvement in the operation of coal fired power plants

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

consumer choice on ecologically efficient water heaters marketing strategy and policy implications in japan abstract this study examines how consumers select ecologically efficient water heaters in japan energy conservation in household water heating is increasingly important for reducing an amount of co 2 emission because the share of water heating in household energy consumption is approximately 30 recently japanese households have widely used ecologically efficient electric heat pump water heaters eco cute or gas fired water heaters eco jozu the total number of such efficient water heaters sold in japan was more than 2 5 million at the end of 2008 this study investigates various factors and impacts of marketing strategy for promoting the appliances in japan we apply mixed and nested logit models to a disaggregated choice data on water heaters from 2004 to 2008 this study considers retail energy prices a government financial support and marketing activities as important factors for appliance selection in addition we consider consumers housing attributes such as floor space and age of building this empirical study finds two business implications one of the two implications is that an increase in an energy price may enhance a choice probability of eco cute and eco jozu because a price increase invites consumer s consciousness on energy conservation so that a cost reduction on energy consumption becomes essential in a use of the efficient appliances the other implication is that marketing activities especially by recommendations from sales representatives and or housing suppliers are important for consumer behaviors the other important findings are discussed in this study this business experience in japan is useful to the other countries where ecologically efficient water heaters are not popular at the current moment

investment strategy for sustainable society by development of regional economies and prevention of industrial pollutions in japanese manufacturing sectors abstract a balance between industrial pollution prevention and economic growth becomes a world wide issue to develop a sustainable society in many industrial nations to discuss the issue this study proposes a new use of dea environmental assessment to determine how to effectively allocate capital for developing regional industries the amount of capital is used to invest for technology innovation for both local economic growth and environmental protection in this study the proposed approach separates outputs into desirable and undesirable categories inputs are also separated into two categories one of which indicates an amount of investment on capital assets the other category is used for production activities the proposed approach unifies them by two disposability concepts this study has evaluated the performance of manufacturing industries in 47 prefectures local government units in japan by unified efficiency under natural disposability uen unified efficiency under managerial disposability uem and unified efficiency under natural and managerial disposability uenm the uenm is further separated into its two cases with and without a possible occurrence on desirable congestion or technology innovation on undesirable outputs this study has empirically confirmed that japanese manufacturing industries need to make their efforts to reduce greenhouse gas emissions and air pollution substances by investing in technology innovation furthermore most of economic activities are currently located at metropolitan regions e g tokyo in japan to develop a sustainable society japan needs to allocate capital into regions with a high level of investment effectiveness by shifting the manufacturing industries from the metropolitan regions to much promising local areas identified in this study such a shift along with technology innovation makes it possible to reduce air pollutions in the entire japan by balancing economic growth and pollution prevention this empirical study confirms that the proposed approach is useful in both guiding regional planning and developing a sustainable society it is easily envisioned that the proposed approach is useful for not only japan but also the other industrial and developing nations

heterogeneous fragility systematic panic and optimal transparency abstract in this study we provide a model of systematic panic among financial institutions with heterogeneous fragility during a systematic panic institutions characterized by a higher degree of fragility are more aggressive to withdrawals and such aggressiveness increases linearly with their fragility we derive an analytical solution for this linear relationship using a global game framework and demonstrate that transparency does not always endanger the regime when the outside option is large transparency increases the strength of the regime

structural reform of japanese electric power industry separation between generation and transmission distribution this study examines the cost structure of japanese electric power industry to investigate whether a structural reform on the industry really enhances a cost saving benefit to consumers a composite cost function model using a panel data set is used for this study the data set consists of nine electric power companies from 1990 to 2008 based upon the estimation results this study examines whether economies of scale and vertical economies exist in the industry then this study conducts a cost subadditivity test that is a necessary condition of natural monopoly the empirical results indicate that the electric power firms exhibit the status of economies of scale in their transmissions and distributions and the operation as a whole however they do not exhibit economies of scale in their generations thus the transmission operation by integration in a large area can improve its economic efficiency furthermore the industry should introduce more competition in both generation and wholesale power markets where more firms can participate in their power trades this study also empirically confirms that vertical economies have existed in the industry moreover this study confirms that all the estimates in the cost subadditivity test satisfy the necessary condition of natural monopoly where each estimate indicates cost saving in cost subadditivity the test does not guarantee a sufficient condition of natural monopoly however it clearly indicates that the functional separation between generation and transmission will increase total production cost in the industry the complete separation may result in a net loss of economic efficiency if a competition benefit does not exceed an expected economic loss consequently this study suggests that the industrial structure of future japanese electric power industry should be evaluated from not only an expected benefit by introducing competition but also an unbundling cost that occurs with a loss of vertical integration

dynamic interventions and informational linkages abstract we model a dynamic economy with strategic complementarity among investors and study how endogenous government interventions mitigate coordination failures we establish equilibrium existence and uniqueness and we show that one intervention can affect another through altering the public information structure a stronger initial intervention helps subsequent interventions through increasing the likelihood of positive news but also leads to negative conditional updates our results suggest optimal policy should emphasize initial interventions when coordination outcomes tend to correlate neglecting informational externalities of initial interventions results in over or under interventions moreover saving smaller funds disproportionally more can generate greater informational benefits at smaller costs

dea environmental assessment in time horizon radial approach for malmquist index measurement on petroleum companies abstract the climate change and various pollutions have been influencing our societies and economies the environmental assessment to be discussed in this study is increasingly important because it serves as an initial step toward pollution prevention corporate leaders policy makers researchers and individuals who are interested in environmental protection have been paying attention to the assessment so that they can prepare policy suggestions on the global warming and climate change as a methodology for the assessment this study proposes a use of data environment analysis dea in a time horizon most of data sets on the climate change are sampled in a time series where the performance of organizations fluctuates every moment in applying the dea environmental assessment to such a data set it is necessary for us to classify outputs into desirable e g oil production and undesirable e g co 2 emission categories because all organizations usually produce not only desirable but also undesirable outputs as a result of their economic activities to unify the two different types of outputs this study incorporates the concept of natural and managerial disposability into the computational framework of dea and extends them into a time horizon for the research purpose this study incorporates malmquist index into the proposed dea environmental assessment to examine an occurrence of a frontier shift among multiple periods the frontier shift indicates a technology progress and or managerial innovation during an observed period the index is further separated into four subcomponents in a time horizon these subcomponents are differently expressed under the natural and managerial disposability thus eight different subcomponents on the malmquist index are proposed to measure the frontier shift as an application this study uses the proposed dea approach to examine whether the frontier shift due to technology progress occurs or not in the petroleum industry from 2005 to 2009 our empirical study finds that the industry has not exhibited any major frontier shift under natural disposability but showing a considerable frontier shift under managerial disposability in other words the petroleum firms have improved their environmental performance by eco technology to reduce an amount of co 2 emission during the observed annual periods

coordination and discrimination in contracting with externalities divide and conquer abstract the paper studies bilateral contracting between n agents and one principal whose trade with each agent generates externalities on other agents it examines the effects of prohibiting the principal from i coordinating agents on her preferred equilibrium and ii making different contracts available to different agents these effects depend on whether an agent is more or less eager to trade when others trade more the prohibitions reduce the aggregate trade in the former case and have little or no effect in the latter case the inefficiencies under different contracting regimes are linked to the sign of the relevant externalities and are shown to be typically reduced by both prohibitions

malmquist index measurement for sustainability enhancement in chinese municipalities and provinces abstract this study discusses a use of dea environmental assessment in a time horizon we use a radial approach to examine a dynamic change of index measures related to china s regional development and industrial pollution prevention in applying the proposed assessment to a time series data we need to examine components that produce a shift of an efficiency frontier in a time horizon a unique feature of the proposed assessment is that it incorporates a framework of malmquist index to examine the frontier shift among multiple periods here the frontier shift indicates a progress potential on technology development and or managerial improvement among observed periods thus it is not an efficiency measure rather the measurement eliminates inefficiency by shifting an organization to an efficiency frontier in this study the index is conceptually separated into 6 subcomponents which are further disaggregated into 12 different elements 6 subcomponents 2 disposability concepts under natural and managerial disposability concepts the proposed index measurement needs to consider a possible occurrence of a frontier crossover among different periods because technology diffusion on production activities usually has a time lag until it becomes really effective methodologically this study conveys the message that dea is an approximation method so being not perfect therefore it is necessary for us to use several different approaches e g potential improvement by measuring a frontier shift and efficiency analysis to obtain reliable empirical evidence as an application this study examines the level of sustainability related to 30 municipalities and provinces in china from 2003 to 2014 the following six policy implications are obtained in this study first all municipalities and provinces have made a considerable progress on their economies and pollution prevention efforts second the effect of the frontier crossover is limited in china because they attain a high level of their potentials on economic development and pollution prevention of course this effort is within the chinese boundary not international because this study does not compare them with other industrial nations third china needs to allocate its resources to western provinces at a level that it has used for coastal developments fourth the government should reinforce efforts on environmental protection in central and southern regions fifth the government has focused on the sustainability development in urban municipalities and provinces and then has gradually shifted the policy influence toward rural areas finally different empirical results are confirmed by the potential analysis which consists of the malmquist index measurement and the efficiency analysis both approaches need to be examined for future planning on chinese regional development

will airline efficiency be affected by carbon neutral growth from 2020 strategy evidences from 29 international airlines abstract in this paper the impact of the carbon neutral growth from 2020 cng2020 strategy on airline efficiency is analyzed based on the predicted data of 29 international airlines during 2021 2023 the data is predicted through neural network following the principle of cng2020 strategy we calculate the emission limit for each airline two models network range adjusted measure with natural disposability and network range adjusted measure with managerial disposability are proposed to discuss the efficiency change when the cng2020 strategy is considered the following findings are gotten 1 under natural disposability the indices related with undesirable output have a larger role in deciding benchmarking airline 2 for most of the 29 airlines cng2020 strategy has little influence on their efficiency

investigating multi regional cross industrial linkage based on sustainability assessment and sensitivity analysis a case of construction industry in china abstract construction industry is one of the most energy intensive industries and its output value plays a vital role in economic growth of china it s expected to be valuable to investigate its sustainability and improvement paths under the background of environment friendly and conservation minded development at first we adopted a non radial data envelopment analysis incorporating both natural and managerial disposability to study regional differences regards comprehensive performance of construction industry in china and then a multi regional cross industrial linkage analysis was carried out embodiment in the sustainable assessment and sensitivity analysis based on the ghosh model accordingly we intended to provide a systematic relational network focusing on the key provinces and industries which play important roles in improving the comprehensive performance of construction industry in detail hebei shanghai hubei yunnan and gansu were found to be the most inefficient on account of the results from sustainable assessment in 2007 in accordance with the results from the sensitivity analysis based on the regional input output model the adjustment of rationing in mining processing of ores manufacture of non metallic mineral products and smelting pressing of metals will effectively increase the comprehensive performance of construction industry in the above mentioned provinces emphatically the method integration used in this study which could also be applied in other sectors and countries is a new try to study an industry from the multi regional and cross industrial perspective

dea environmental assessment in a time horizon malmquist index on fuel mix electricity and co2 of industrial nations abstract climate change and global warming become a major policy issue in the world economic activities produce not only desirable outputs e g electricity but also undesirable outputs e g co 2 emission the important policy issue is how each nation can balance between economic development and environmental protection to attain a sustainable society in attaining the sustainable society environmental assessment is increasingly important because it can serve as an initial step toward the green growth of each nation for the purpose this study proposes a new use of dea data environment analysis for environmental assessment in a time horizon the proposed use of dea incorporates malmquist index to examine the degree of a frontier shift among multiple periods the frontier shift indicates a technology progress and or managerial innovation during an observed period the index is conceptually separated into six subcomponents which are further divided into twelve different subcomponents six subcomponents two disposability concepts under the natural and managerial disposability in the index measurement it is necessary for us to consider a frontier crossover among different periods because technology innovation usually has a time lag until it really appears as an empirical application this study utilizes the proposed approach to identify the relationship among fuel mix electricity and co 2 of ten industrial nations this study finds three important empirical findings first there is a time lag in technology innovation on electricity generation and co 2 emission reduction consequently it is necessary to consider the existence of a frontier crossover in assessing the electric power industry second nuclear generation as found in france as well as hydro and renewable energy as found in netherlands are important for the development of a sustainable society although the former is associated with a very high level of risk and the latter has a limited generation capacity finally the electric power industry has been making a corporate effort to reduce the amount of co 2 emission by utilizing nuclear and renewable energy

characterising equilibrium selection in global games with strategic complementarities abstract global games are widely used to predict behaviour in games with strategic complementarities and multiple equilibria we establish two results on the global game selection first we show that for any supermodular complete information game the global game selection is independent of the payoff functions chosen for the game s global game embedding second we give a simple sufficient criterion to derive the selection and establish noise independence in many action games by decomposing them into games with smaller action sets to which we may often apply simple criteria we also report in which small games noise independence may be established by counting the number of players or actions

a critique of non parametric efficiency analysis in energy economics studies abstract the paper reexamines non additive environmental efficiency models with weakly disposable undesirable outputs appeared in the literature of energy economics these efficiency models are used in numerous studies published in this journal and other energy related outlets recent studies however have found key limitations of the weak disposability assumption in its application to environmental efficiency analysis it is found that efficiency scores obtained from non additive efficiency models can be non monotonic in pollution quantities under the weak disposability assumption which is against common intuition and the principle of environmental economics in this paper i present taxonomy of efficiency models found in the energy economics literature and illustrate the above limitations and discuss implications of monotonicity from a practical viewpoint finally i review the formulations for a variable returns to scale technology with weakly disposable undesirable outputs which has been misused in a number of papers in the energy economics literature an application to evaluating the energy efficiencies of 23 european union states is presented to illustrate the problem

intertemporal coordination with delay options abstract this paper studies equilibrium selection in intertemporal coordination problems with delay options the risk dominant action of the underlying one shot game is selected when frictions are arbitrarily small larger frictions introduce real option effects in the model and inhibit coordination

heterogeneity and stability bolster the strong not the weak we first study a stylized model of self fulfilling panic among agents with differing fragilities to strategic risk and show that depending on the severity of coordination problems the panic trigger threshold can depend only on one type s fragility we then present a model of systemic panic among financial institutions with heterogeneous fragilities to financial spillovers concerns about potential spillovers generate strategic interaction triggering a pre emption game in which one tries to exit the market before others to avoid spillovers although financial contagion originates in weaker institutions systemic risk can critically depend on financial health of stronger in the contagion chain in this case bolstering the strong rather than the weak more effectively enhances systemic stability

risk sharing and crises global games of regime change with endogenous wealth abstract i add heterogeneous agents and risk sharing opportunities to a global game of regime change the novel insight is that when there is a risk sharing motive fundamentals drive not only individual behavior but also select which individuals are more relevant for the likelihood of a crisis because of endogenous shifts in wealth if attacking is relatively safe attack behavior in the global game and trade in state contingent assets feed back into each other this feedback implies that multiple equilibria may exist even if signal noise becomes arbitrarily small in addition heterogeneity in risk aversion within the population amplifies the influence of the state of the economy on the probability of a crisis

weak disposability in nonparametric production analysis with undesirable outputs environmental economics and natural resources group at wageningen university in the netherlands weak disposability of outputs means that firms can abate harmful emissions by decreasing the activity level modeling weak disposability in nonparametric production analysis has caused some confusion this article identifies a dilemma in these approaches conventional formulations implicitly and unintentionally assume all firms apply uniform abatement factors however it is usually cost effective to abate emissions in those firms where the marginal abatement costs are lowest this article presents a simple formulation of weak disposability that allows for non uniform abatement factors and preserves the linear structure of the model

dynamic coordination and the optimal stimulus policies this article studies stimulus policies in a simple macroeconomic model featuring a dynamic coordination problem that arises from demand externalities and fixed costs of investment in times of low economic activity firms face low demand and hence have lower incentives for investing which reinforces their low demand expectations in a benchmark case with no shocks the economy might get trapped in a low output regime and a social planner would be particularly keen to incentivise investment at times of low economic activity however this result vanishes once shocks are considered

coordination risk and the price of debt abstract creditors of a distressed borrower face a coordination problem even if the fundamentals are sound fear of premature foreclosure by others may lead to pre emptive action undermining the project recognition of this problem lies behind corporate bankruptcy provisions across the world and it has been identified as a culprit in international financial crises but has received scant attention from the literature on debt pricing without common knowledge of fundamentals the incidence of failure is uniquely determined provided that private information is precise enough this affords a way to price the coordination failure comparative statics on the unique equilibrium provides several insights on the role of information and the incidence of inefficient liquidation

migration and interregional employment redistribution in the united states during the 1970 s the south and west census regions accounted for 89 9 percent of incremental u s population and 72 5 percent of incremental nonagricultural employment these figures are sharply higher than corresponding figures for any other decade in u s history for example during the 1930 s the south and west gained 65 4 percent of incremental national population which was the highest share previously recorded the immediate cause of the interregional population shifts is fairly heavy net out migration from the northeast and north central regions to the south and west combined with birth rates that are near historical low levels interactive relationships that cause employment growth and migration to reinforce one another are probably operating but these relationships are not well understood they are the focus of this paper using a new and unique set of time series data on migration and employment we develop and estimate a time series model of migration and employment growth for each of 171 u s regions our primary emphasis in this paper is on the 57 major metropolitan

regional energy environmental performance and investment strategy for china s non ferrous metals industry a non radial dea based analysis globally china is the largest producer and consumer of common non ferrous metals china s non ferrous metals industry is energy intensive accounting for 24 of the total industrial energy consumption in 2011 in this study we adopted a non radial dea model to examine the energy environmental performance of the non ferrous metals industry from a regional perspective during the 2006 2011 period the energy environmental performance was evaluated by the eco efficiency under natural disposability en eco efficiency under managerial disposability em eco efficiency under natural and managerial disposability enm and enm with desirable congestion enm dc based on the en both the energy conservation and emission reduction potentials were calculated additionally the investment strategy was confirmed by regional types of damages to return dtr in the second stage study the factors influencing eco efficiency were measured using tobit regression and truncated regression models the results indicated that the efficiency scores of en em enm and enm dc were considerably different investment was effective in improving the energy environmental performance for twenty one regions during the whole study period henan had the highest energy conservation and emission reduction potentials the results obtained from the regression models were similar which displayed that the population density and energy price were responsible for the increase in eco efficiency while economic development level and industrial structure affected eco efficiency negatively based on these results policy recommendations for the non ferrous metals industry to improve their performance in a low carbon economy are suggested

rationalizability learning and equilibrium in games with strategic complementarities we study a rich class of noncooperative games that includes models of oligopoly competition macroeconomic coordination failures arms races bank runs technology adoption and diffusion r d competition pretrial bargaining coordination in teams and many others for all these games the sets of pure strategy nash equilibria correlated equilibria and rationalizable strategies have identical bounds also for a class of models of dynamic adaptive choice behavior that encompasses both best response dynamics and bayesian learning the players choices lie eventually within the same bounds these bounds are shown to vary monotonically with certain exogenous parameters we study the class of noncooperative supermodular games introduced by topkis 1979 and further analyzed by vives 1985 1989 who also pointed out the importance of these games in industrial economics supermodular games are games in which each player s strategy set is partially ordered the marginal returns to increasing one s strategy rise with increases in the competitors strategies so that the game exhibits strategic complementarity 2 and if a player s strategies are multidimensional marginal returns to any one com ponent of the player s strategy rise with increases in the other components this class turns out to encompass many of the most important economic applications of noncooperative game theory in macroeconomics diamond s 1982 search model and bryant s 1983 1984 rational expectations models can be represented as supermodular games in each of these models more activity by some members of the economy raises the returns to increased levels of activity by others in oligopoly theory some models of bertrand oligopoly with differentiated products qualify as supermodu lar games in these games when a firm s competitors raise their prices the marginal profitability of the firm s own price increase rises a similar structure is present in games of new technology adoption such as those of dybvig and spatt 1983 farrell and saloner 1986 and katz and shapiro 1986 when more users hook into a communication system or more manufacturers adopt an interface standard the marginal return to others of doing the same often rises similarly in some specifications of the bank runs model introduced by diamond and dybvig 1983 when more depositors withdraw their funds from a bank it is more worthwhile for other depositors to do the same in the warrant exercise

coordination and the fight against tax havens abstract the success or failure of the fight against tax havens is the outcome of a many player coordination game between a tax haven and its potential investors key determinants are the costly international pressure and the size of the haven country s revenue pool the latter is determined endogenously by the decisions of many individual investors our analysis suggests a non standard market model that explains why haven countries would ever comply with international standards of transparency despite the large empirically observable returns in the tax haven business it also alludes to why service fees in tax havens can be positive despite a competitive financial market with multiple tax havens furthermore we identify a trade off between the fight against tax havens and high tax rates finally low fines for disclosed offshore tax evasion e g in special programs for tax evaders who voluntarily report their offshore wealth strengthen haven countries against international pressure

dea environmental assessment on us petroleum industry non radial approach with translation invariance in time horizon abstract this study empirically assesses the performance of the petroleum industry focusing upon independent companies in the united states us for the empirical study we use the data envelopment analysis dea that has been widely used for environmental assessment and performance measurement the conventional use of dea requests that all observations in the data set should be positive prohibiting an occurrence of zero and or negative values the requirement of non negative value is inconsistent with the reality of us petroleum industry because many oil firms recently experience negative shocks in financial performance to overcome the obstacle this study discusses the property of translation invariance under undesirable congestion e g capacity limit in the transportation pipeline network and desirable congestion e g green technology innovation based on the non radial models the property implies that the unified efficiency measure should be not influenced even if production factors are shifted toward the same direction by adding or subtracting a specific real number the property makes it possible that we can evaluate the performance of firms whose production factors contain zero and or negative values this study is empirically concerned with practical implications of translation invariance from energy and environmental perspectives in addition this study examines the proposed environmental assessment in a time horizon for the purpose this study uses window analysis to examine an efficiency change along with a time shift our empirical investigation finds the following three implications first under the natural disposability the oil firms efficiency growth rates have become less than unity implying the industry wide difficulty or inability to cut back their drilling and production operations second all firms have been under regulatory and stakeholder pressures on air pollution therefore the efficiency growth rates under managerial disposability have not exhibited a major change during the observed annual periods finally such implications are statistically reconfirmed by regression analysis that examines how the change of energy price influences unified efficiencies under natural and managerial disposability an exception can be found in the natural disposability where energy prices influence their efficiency growths thus an increase in energy prices is important in maintaining a high level of efficiency growths in the us petroleum industry

catalytic finance when does it work in a model of debt crisis caused partly by creditor coordination failure we show that bailouts that reduce ex post inefficiency will sometimes enhance the incentives for governments to take costly adjustment effort this model helps us understand a debate about the role of the imf in catalyzing lending to developing countries

risk and wealth in a model of self fulfilling currency attacks market participants risk attitudes wealth and portfolio composition in uence their positions in a pegged foreign currency and therefore may have important efiects on the sustainability of currency pegs we analyze such efiects in a global game model of currency crises with continuous action choices generating a rich set of theoretical comparative static predictions related to often discussed but rarely modelled accounts of the onset and timing of currency crises the model can be solved in closed form and the methods could be used to study other economic issues in which coordination and risk aversion play important roles

social sustainability measured by intermediate approach for dea environmental assessment chinese regional planning for economic development and pollution prevention abstract this study examines the level of simultaneous achievement on economic prosperity and environmental protection so measuring the level of sustainability by a newly proposed intermediate approach conventionally dea data envelopment analysis for performance evaluation was used to assess various economic activities of organizations that utilized inputs e g the number of employees to yield desirable outputs e g the number of products the methodology was usually classified into radial or non radial category in an effort of extending it to environmental assessment dea needs to incorporate undesirable outputs e g the amount of co 2 into the computational framework this type of assessment is referred to as dea environmental assessment the proposed intermediate approach develops a new type of dea environmental assessment by combining the analytical features of radial approach with those of non radial approach the new approach measures the level of unified inefficiency on each production factor and determines the level of total unified inefficiency from the average of the sum of these inefficiency scores a rank sum test and a mean test are additionally incorporated into the proposed intermediate approach such a combination enhances the statistical capability as an application this study examines the level of sustainability related to 30 provinces in china from 2003 to 2014 the application finds four policy implications first it is important for china to allocate its resources to western provinces at a level that it has used for coastal developments second the government continues to reinforce the policy making effort on environmental protection by paying attention to central and southern regions the chinese industries need to transfer toward green energy the transfer should be efficiently executed for their future developments third the government has focused on the sustainability development in urban provinces and then has gradually shifted the policy influence toward rural areas finally the policy implementation needs a time lag until it becomes effective the time lag on economic policy is longer than that of environmental policy the economic policy has historically produced a regional imbalance often leading to educational and income imbalances among chinese provinces

dea approach for unified efficiency measurement assessment of japanese fossil fuel power generation this study discusses a new dea data envelopment analysis approach to measure the unified operational and environmental efficiency of energy firms it is widely known that they produce not only desirable good outputs e g electricity but also undesirable bad outputs e g co2 as a result of their plant operations the proposed approach incorporates an output separation desirable and undesirable outputs for the performance evaluation of energy firms in addition to the output separation this study separates inputs into energy and non energy inputs consequently the proposed approach incorporates not only the output separation but also the input separation within a computational framework of dea non radial measurement this study compares the proposed approach with other previous dea approaches used for the performance evaluation of energy firms after the methodological comparison this study applies the proposed approach for measuring the unified efficiency of japanese fossil fuel power generation this empirical study confirms that the implementation of kyoto protocol 2005 has not been effective on the unified efficiency of japanese fossil fuel power generation during the observed period 2004 2008 although the empirical result is inconsistent with the current japanese environmental policy under kyoto protocol it contains policy implications for guiding the future direction of japanese environmental policy on the electric power industry

an approach to equilibrium selection abstract we consider equilibrium selection in 2 2 bimatrix both symmetric and asymetric games with two strict nash equilibria by embedding the static games in a dynamic random matching framework played by a continuum of anonymous agents unlike in evolutionary games the players are rational and maximize discounted payoffs but they are restricted to make a short run commitment when choosing actions this dynamic game with frictions has stationary states which correspond to the nash equilibria of the static game our selection is based on differential stability properties of the stationary states it is shown that for a small degree of friction a strict nash equilibrium becomes uniquely absorbing and globally accessible if and only if it is risk dominant harsanyi and selten a general theory of equilibrium selection in games mit press cambridge ma 1988 journal of economic literature classification numbers c72 and c73