competing vertical structures precommitment and renegotiation we consider a model where two agents privately informed about their own characteristics play a normal form game on behalf of two uninformed principals we analyze the existence of precommitment effects through public announcements of contracts in a model where agency contracts designed ex ante can always be secretly renegotiated at the ex ante and interim stages we show that the existence of precommitment effects depends both on the strategic complementarity of the agents actions and on the direct effect of the opponents actions on each principal s welfare in our model the possibility of renegotiation is crucial for the existence of precommitment effects the results are introduced through an example of cournot and bertrand competition between firms viewed as vertical structures

energy consumption real income and temporal causality results from a multi country study based on cointegration and error correction modelling techniques abstract unlike previous studies on the causal relationship between energy consumption and economic growth this paper illustrates how the finding of cointegration i e long term equilibrium relationship between these variables may be used in testing granger causality based on the most recent johansen s multivariate cointegration tests preceded by various unit root or non stationarity tests we test for cointegration between total energy consumption and real income of six asian economies india pakistan malaysia singapore indonesia and the philippines non rejection of cointegration between variables rules out granger non causality and imples at least one way of granger causality either unidirectional or bidirectionial secondly by using a dynamic vector error correction model we then analyse the direction of granger causation and hence the within sample granger exogeneity or endogeneity of each of the variables thirdly the relative strength of the causality is gauged through the dynamic variance decomposition technique by decomposing the total impact of an unanticipated shock to each of the variables beyond the sample period into proportions attributable to shocks in the other variables including its own in the bivariate system results based on these tools of methodology indicate that while all pair wise relationships shared common univariate integrational properties only relationships for three countries india pakistan and indonesia were cointegrated for these countries temporal causality results were mixed with unidirectional causality from energy to income for india exactly the reverse for indonesia and mutual causality for pakistan the vdcs were not inconsistent with these results and provided us with an additional insight as to the relatively more dominant direction of causation in pakistan simple bivariate vector autoregressive models for the three non cointegrated systems did not indicate any direction of causality significantly in either direction

energy consumption and gdp causality relationship in g 7 countries and emerging markets abstract the causality relationship between energy consumption and income is a well studied topic in energy economics this paper studies the time series properties of energy consumption and gdp and reexamines the causality relationship between the two series in the top 10 emerging markets excluding china due to lack of data and g 7 countries we discover bi directional causality in argentina causality running from gdp to energy consumption in italy and korea and from energy consumption to gdp in turkey france germany and japan hence energy conservation may harm economic growth in the last four countries

carbon dioxide emissions and economic growth panel data evidence from developing countries in this paper we test the environment kuznet s curve ekc hypothesis for 43 developing countries we suggest examining the ekc hypothesis based on the short and long run income elasticities that is if the long run income elasticity is smaller than the short run income elasticity then it is evident that a country has reduced carbon dioxide emissions as its income has increased our empirical analysis based on individual countries suggests that jordan iraq kuwait yemen qatar the uae argentina mexico venezuela algeria kenya nigeria congo ghana and south africa approximately 35 per cent of the sample carbon dioxide emissions have fallen over the long run that is as these economies have grown emissions have fallen since the long run income elasticity is smaller than the short run elasticity we also examine the ekc hypothesis for panels of countries constructed on the basis of regional location using the panel cointegration and the panel long run estimation techniques we find that only for the middle eastern and south asian panels the income elasticity in the long run is smaller than the short run implying that carbon dioxide emission has fallen with a rise in income

the impact of electricity supply on economic growth in sri lanka abstract yang energy econ 22 2000 309 has found a bi directional causal relationship between gross domestic product and electricity consumption in taiwan roc this study applies yang s model to examine the impact of electricity supply on economic growth in sri lanka morimoto and hope an extended cba model of hydro projects in sri lanka 2001 have found that the expected increase in economic output due to increased electricity supply parameter eo plays a crucial role in their cost benefit analysis model this study shows that the application of yang s regression analysis is one possible approach to estimate a better range for the parameter eo the estimated figure is that an extra output of rs 88 000 137 000 us1120 1740 for every 1 mw h increase in electricity supply

energy and national income in korea further evidence on the role of omitted variables abstract results of this paper indicate that the real oil price is a major determinant of real national income and energy consumption the combined effects of real money and real government expenditure on real income and energy consumption are also substantial a lack of causality or the causality between energy and real income in prior studies is due to the omitted variables results also confirm that the two oil price shocks combined adversely affected real national income

an investigation of co integration and causality between energy consumption and economic activity in taiwan applying hsiao a version of the granger causality method this paper examines the causality between energy and gnp and energy and employment by applying recently developed techniques of co integration and hsiao s version of the granger causality to taiwanese data for the 1955 1993 period the phillips perron tests reveal that the series with the exception of gnp are not stationary and therefore differencing is performed to secure stationarity the study finds causality running from gdp to energy consumption without feedback in taiwan it is also found that causality runs from gdp to energy but not vice versa

competition and cooperation within a multidivisional firm the strategic choice of managerial incentives is studied in a multiagent setting using a two stage game in the first stage the principal chooses incentive schemes then agents make their decisions the game models the structure of multidivisional firms divisions agents are managed independently but the general office principal monitors their performance and provides incentives it explains the rationale for establishing either cooperation or competition across divisions if firms face cournot competition if divisions are linked because of technological reasons positive spillovers cooperation should be stimulated if they sell substitute products negative spillovers competition is needed copyright 1995 by blackwell publishing ltd

managerial incentives and the price effects of mergers most analysis of market power assumes that managers are perfect agents for shareholders this paper relaxes that assumption when managers of a multi product firm exert unobservable effort to improve product quality there is a trade off between providing adequate effort incentives and ensuring sufficient price coordination between the product divisions this makes some intra firm price competition optimal explaining why many multi product firms allow for competition between divisions when there are effort spillovers the optimal amount of price competition can be as great as when the products are under separate ownership even with some profit sharing intra firm price competition can reduce quality adjusted price which has important implications for antitrust policy

determinants of co2 emissions in a small open economy abstract the aim of the paper is to explore the relationship between economic development and carbon dioxide co2 emissions for a small open and industrialized country austria we test whether an environmental kuznets curve relationship also holds for a single country rather than concentrating on panel or cross section data for a set of countries a cubic i e n shaped relationship between gdp and co2 emissions is found to fit the data most appropriately for the period 1960 1999 and a structural break is identified in the mid seventies due to the oil price shock furthermore two variables are additionally significant import shares reflecting the well known pollution haven hypothesis and the share of the tertiary service sector of total production gdp accounting for structural changes in the economy emission projections derived from this single country specification support the widely held opinion that significant policy changes are asked for when implementing the kyoto protocol in order to bring about a downturn in future carbon emissions

strategic r d with spillovers collusion and welfare the author considers a two stage r d then output or price duopoly game in which r d spills over so reducing the marginal cost of both the investing firm and its rival the author compares the noncooperative regime to three collusive regimes joint venture collusion on r d price fixing collusion at the price or output stage and merger collusion at both stages and evaluates under what circumstances a collusive regime improves welfare if spillovers are sufficiently large all three regimes are beneficial although mergers are more likely and price fixing less likely to produce specific benefits than are joint ventures copyright 1994 by blackwell publishing ltd

optimal investment strategies with investor liabilities this paper examines the portfolio problem from the viewpoint of an investor who faces a set of liabilities we show that optimum choices can be made from a set of spanning portfolios which include cash flow matching portfolios index funds and actively managed portfolios the optimal composition of each and the optimum mix among the portfolios are presented in terms of criteria which are computationally simple and have an appealing economic interpretation

energy and economic growth in the usa a multivariate approach abstract this paper examines the causal relationship between gdp and energy use for the period 1947 90 in the usa the relationship between energy use and economic growth has been examined by both biophysical and neoclassical economists in particular several studies have tested for the presence of a causal relationship in the granger sense between energy use and economic growth however these tests do not allow a direct test of the relative explanatory powers of the neoclassical and biophysical models a multivariate adaptation of the test vector autoregression var does allow such a test a var of gdp energy use capital stock and employment is estimated and granger tests for causal relationships between the variables are carried out although there is no evidence that gross energy use granger causes gdp a measure of final energy use adjusted for changing fuel composition does granger cause gdp

a note on the causal relationship between energy and gdp in taiwan abstract this paper re examines the causality between energy consumption and gdp by using updated taiwan data for the period 1954 1997 as a secondary contribution we investigate the causal relationship between gdp and the aggregate as well as several disaggregate categories of energy consumption including coal oil natural gas and electricity applying granger s technique we find bidirectional causality between total energy consumption and gdp we find further that different directions of cause exist between gdp and various kinds of energy consumption

the relationship between energy and gnp further results this paper reexamines the casuality between gnp and energy consumption by using updated us data for the period 1947 1979 as a secondary contribution we investigate the causal relationship between energy consumption and employment applying sims technique we find no causal relationship between gnp and energy consumption we find further that there is a slight unidirectional flow running from employment to energy consumption economic interpretations of the empirical results are also presented

inter firm cooperation with imperfectly appropriable research abstract inter firm collaboration in pre competitive research is not always beneficial rather its effectiveness in raising social benefits relative to a non cooperative setup depends on both the nature of the agreement and the technological and market conditions of the industry in question joint ventures that simply allow members to coordinate their actions in pre competitive research can restore firm incentives for both pre competitive research and development in the presence of high knowledge spillovers and poor opportunities for innovation joint ventures which additionally improve the dissemination of information among member firms raise social benefits whenever the opportunities for innovation are not exceptionally good even in the presence of relatively insignificant spillovers

the global stability of efficient intertemporal allocations this paper describes a continuous time model of an economy with finitely many infinitely lived consumers and a finite number of capital goods two objectives are achieved first recursive nonadditive utility functionals are formulated and analyzed second these preference functionals are applied to analyze the nature of efficient allocations in a dynamic economy two classes of global turnpike propositions are proven which provide the basis for a model of the long run distribution of wealth these propositions also provide new perspective regarding existing stability literature based on additive utilities copyright 1987 by the econometric society

total portfolio duration a new perspective on asset allocation the concept of duration has proved to be a valuable tool for gauging the sensitivity of a bond portfolio to movements in interest rates by balancing the duration of a fixed income portfolio against the duration of the stream of liabilities it is funding one creates a portfolio that is immunized against interest rate changes but what if the portfolio contains stocks as well as bonds the interest rate risk of an equity portfolio can be estimated from a measure of the correlation between stock and bonds by using variance parameters routinely used in conventional asset allocation procedures the correlation is used in conjunction with a measure of bond market duration to derive an estimate of the duration of the stock market these durations together with a portfolio s allocations to stocks and bonds and the beta of the stock component may be used to obtain a measure of total portfolio duration what the duration measure tells us in general is that a total portfolio s sensitivity to interest rate mo

income and emission a panel data based cointegration analysis this paper presents the results of an investigation of the causality issue of incomeemission relationship based on time series econometric techniques of unit root test cointegration and related error correction model for a panel data set here the nature of causality between per capita co2 emission pcco2 and per capita gdp pcgdp has been examined using a cross country panel data set covering 88 countries for the period 1960 90 using the panel unit root test procedure of im et al 1997 ips we have found that the hypothesis of unit root i e non stationarity of the time series of pcgdp and pcco2 can not be rejected for individual country groups as both the variables are found to follow i 1 process we next have performed the panel data co integration test and finally we have estimated the ecm for these country groups for which significant income emission cointegration was obtained to explore the nature of dynamics implicit in the given panel data set our findings suggest that there is more or less a bi directional causal relationship between income pcgdp and co2 emission pcco2 for africa central america america as a whole eastern europe western europe europe as a whole and the world as a whole that means the movement of the one variable directly affects the other variable through a feedback system thus the policy makers should be cautious to make proper decision about the control of emission level

panel estimation for co2 emissions energy consumption economic growth trade openness and urbanization of newly industrialized countries abstract this paper empirically examines the dynamic causal relationships between carbon dioxide emissions energy consumption economic growth trade openness and urbanization for the panel of newly industrialized countries nic using the time series data for the period 1971 2007 using four different panel unit root tests it is found that all panel variables are integrated of order 1 from the johansen fisher panel cointegration test it is found that there is a cointegration vector among the variables the granger causality test results support that there is no evidence of long run causal relationship but there is unidirectional short run causal relationship from economic growth and trade openness to carbon dioxide emissions from economic growth to energy consumption from trade openness to economic growth from urbanization to economic growth and from trade openness to urbanization it is found that the long run elasticity of carbon dioxide emissions with respect to energy consumption 1 2189 is higher than short run elasticity of 0 5984 this indicates that over time higher energy consumption in the newly industrialized countries gives rise to more carbon dioxide emissions as a result our environment will be polluted more but in respect of economic growth trade openness and urbanization the environmental quality is found to be normal good in the long run

electricity consumption and economic growth evidence from turkey abstract this study investigates the causal relationship between electricity consumption and real gdp in turkey during the period of 1950 2000 both of the series were found to be a stationary process around a structural break by the zivot and andrews test thus two different methodologies have been employed to test the granger non causality the dolado lutkepohl test using the vars in levels and the standard granger causality test using the detrended data both tests have yielded a strong evidence for unidirectional causality running from the electricity consumption to the income this implies that the supply of electricity is vitally important to meet the growing electricity consumption hence to sustain the economic growth in turkey

the strategic choice of managerial incentives do firms with separate owners and managers maximize profits we address this question for an oligopoly where managers compete in quantities or prices as in the cournot or bertrand models and owners choose their managers incentives we find that there is a strategic aspect in the problem of selecting incentives and that profit maximizing behavior does not result in particular in the oligopoly we study the behavior of firms competing in quantity price more closely resembles perfectly competitive collusive behavior than cournot bertrand behavior

environment kuznets curve for co2 emissions a cointegration analysis for china abstract this study examines the long run relationship between carbon emissions and energy consumption income and foreign trade in the case of china by employing time series data of 1975 2005 in particular the study aims at testing whether environmental kuznets curve ekc relationship between co 2 emissions and per capita real gdp holds in the long run or not auto regressive distributed lag ardl methodology is employed for empirical analysis a quadratic relationship between income and co 2 emission has been found for the sample period supporting ekc relationship the results of granger causality tests indicate one way causality runs through economic growth to co 2 emissions the results of this study also indicate that the carbon emissions are mainly determined by income and energy consumption in the long run trade has a positive but statistically insignificant impact on co 2 emissions

r d cooperation and product market competition abstract i derive equilibria that is self enforcing agreements for firms that cooperate in improving their product and compete in marketing it i am particularly interested in the interaction between rd ii product improvement is a function of the effort by each firm iii firms cannot observe each other s effort iv firms market the product by simultaneously setting prices the analysis reveals some surprising results i find that in some cases although monopoly prices can be sustained in equilibrium optimal equilibria call for firms to set lower than monopoly prices in the short run thus providing the right incentives for investment in r d under a different set of assumptions i find that it is optimal to reduce r d effort below the efficient level as a means to sustain short run collusion in prices even though efficient r d effort could be achieved in equilibrium

energy consumption carbon emissions and economic growth in china abstract this paper investigates the existence and direction of granger causality between economic growth energy consumption and carbon emissions in china applying a multivariate model of economic growth energy use carbon emissions capital and urban population empirical results for china over the period 1960 2007 suggest a unidirectional granger causality running from gdp to energy consumption and a unidirectional granger causality running from energy consumption to carbon emissions in the long run evidence shows that neither carbon emissions nor energy consumption leads economic growth therefore the government of china can purse conservative energy policy and carbon emissions reduction policy in the long run without impeding economic growth

should multiproduct firms provide divisional or corporate incentives abstract this paper points out some of the implications of the internal organization of a multiproduct firm for its market conduct in particular we study the strategic use of organizational forms based on corporate incentives versus forms based on divisional incentives the equilibrium internal organization is determined in a model with full information it is shown that firms provide corporate incentives when goods are substitutes and divisional incentives when goods are complements and the result holds both in the case of quantity setting and price setting

the only spending rule article you will ever need after examining an array of approaches to determining a spending rule for retirees the authors propose the annually recalculated virtual annuity each year one should spend at most the amount that a freshly purchased annuity with a purchase price equal to the then current portfolio value and priced at current interest rates and number of years of required cash flows remaining would pay out in that year investors who behave in this way will experience consumption that fluctuates with asset values but they can never run out of money

the electricity consumption and gdp nexus for the fiji islands fiji is a small open island economy dependent on energy for its growth and development hence the relationship between energy consumption and economic growth is crucial for fiji s development in this paper we investigate the nexus between electricity consumption and economic growth for fiji within a multivariate framework through including the labour force variable we use the bounds testing approach to cointegration and find that electricity consumption gdp and labour force are only cointegrated when gdp is the endogenous variable we use the granger causality f test and find that in the long run causality runs from electricity consumption and labour force to gdp implying that fiji is an energy dependent country and thus energy conservation policies will have an adverse effect on fiji s economic growth

energy consumption income and carbon emissions in the united states abstract this paper investigates the effect of energy consumption and output on carbon emissions in the united states earlier research focused on testing the existence and or shape of an environmental kuznets curve without taking energy consumption into account we investigate the granger causality relationship between income energy consumption and carbon emissions including labor and gross fixed capital formation in the model we find that income does not granger cause carbon emissions in the us in the long run but energy use does hence income growth by itself may not become a solution to environmental problems

divisionalization and entry deterrence this paper assumes that incumbent firms can create new independent divisions more cheaply than potential entrants who must incur the additional overhead costs of new entry the main theoretical result is that such divisionalization ability leads perfectly informed incumbents to preempt all rational entry into their industries in contrast existing models of entry deterrence imply that informed incumbents even those with steadily decreasing average costs will often allow rational entry our result may explain why successful large scale entry by firms with no informational advantage is extremely rare the use of divisions to preempt entry may also explain why large firms in high profit oligopolies often divisionalize allowing their divisions to compete freely despite the negative pecuniary externality that each division imposes on others