factor demand technical change and inter fuel substitution in africa abstract the translog production function has been widely used in applied production analysis due to its flexibility and superiority over other functional forms this study develops a translog production function for a group of african countries the random effects model is estimated using generalized least squares estimator the main findings are first output in africa is driven by a more intensive use of petroleum and electricity and to a lesser extent capital labor and coal relative to technological progress second african production technology exhibits increasing returns to scale suggesting a path towards market entry barriers third technical change is scale biased and factor augmenting albeit very slow fourth all energy inputs are substitutes indicating africa s potential to proportionally switch towards cleaner fuels without adversely affecting economic growth finally and perhaps more generally the study reinforces the assertion that imposing restrictions like homotheticity homogeneity or separability on the production technology is unrealistic and should rather be a testable hypothesis within any applied analysis in view of the documented findings relevant implications for africa are discussed

allocative inefficiency and the capital energy controversy abstract the purpose of the paper is to estimate a system of input demands for greek manufacturing deviating from the standard practice of assuming strict cost minimization the study allows for the presence of price distortions and allocative inefficiency in the decision process this assumption affects parameter estimates and estimated elasticities materially and throws new light on the capital energy controversy in greek manufacturing

heuristic decision making in network linking abstract network formation among individuals constitutes an important part of many or processes but relatively little is known about how individuals make their linking decisions in networks this article provides an investigation of heuristic effects in individual linking decisions for network formation in an incentivized lab experimental setting our mixed logit analysis demonstrates that the inherent complexity of the network linking setting causes individuals choices to be systematically less guided by payoff but more guided by simpler heuristic decision cues and that this shift is systematically stronger for social payoff than for own payoff furthermore we show that the specific complexity factors value transferability and social tradeoff aggravate the former effect these heuristic effects have important research and policy implications in areas that involve network formation

is renewable energy a model for powering eastern african countries transition to industrialization and urbanization abstract this study profiles a conversation on the appropriateness of renewable energy as a model for powering development in east african countries estimated output elasticities of nonrenewable energy 0 29 0 48 are by far larger than those of renewable energy 0 12 0 08 and as such highlights the relative importance of the former also the biased component of technical change shows higher technological progress for nonrenewable energy furthermore substitution elasticities are positive 0 77 0 92 suggesting huge potential for a transition towards renewable energy however inherent limitations in renewables documented in wesseh and lin 52 53 undermine the usefulness of east african countries reliance on renewable energy

energy consumption and gdp in developing countries a cointegrated panel analysis in this paper we re investigate the co movement and the causality relationship between energy consumption and gdp in 18 developing countries using data for the period 1975 to 2001 recently developed tests for the panel unit root heterogeneous panel cointegration and panel based error correction models are employed the empirical results provide clear support of a long run cointegration relationship after allowing for the heterogeneous country effect the long run relationship is estimated using a full modified ols the evidence shows that long run and short run causalities run from energy consumption to gdp but not vice versa this result indicates that energy conservation may harm economic growth in developing countries regardless of being transitory or permanent

estimates of inter fuel substitution possibilities in chinese chemical industry abstract the chemical sector is a key driver of china s remarkable growth record and accounts for about 10 of the country s gdp this has made the industry energy intensive and consequently a major contributor to greenhouse gas emissions ghg and other pollutants this study has attempted to investigate the potential for inter fuel substitution between coal oil natural gas and electricity in chinese chemical sector by employing a translog production and cost function ridge regression procedure was adopted to estimate the parameters of the function estimation results show that all energy inputs are substitutes in addition the study produces evidence that the significant role of coal in the chinese chemical fuel mix converges over time albeit slowly these results suggest that price based policies coupled with capital subsidy programs can be adopted to redirect technology use towards cleaner energy sources like electricity and natural gas hence retaining the ability to fuel the chemical sector while also mitigating ghg emissions notwithstanding one must understand that the extent to which substituting electricity for coal will be effective depends on the extent to which coal or oil is used in generating electricity the findings of this study provide general insights and underscore the importance of chinese government policies that focus on installed capacity of renewable electricity energy intensity targets as well as merger of enterprises

industrial energy substitution during the 1980s in the greek economy abstract factor substitution in greek manufacturing during the 1980s is examined using pooled data in static and dynamic translog expenditure share models inputs are capital labor electricity and non electrical energy liquid solid gas own price elasticities for capital and labor are inelastic but for electricity more elastic 0 90 results indicate substitutability among factors in the short run in the long run electricity and capital are complements as are labor and non electrical energy greek manufacturing is predicted to continue decreased consumption of liquid fuels to the year 2000 continuing the electrification begun in the 1970s

effects of substituting energy with capital on china s aggregated energy and environmental efficiency abstract substituting energy with capital sec in economic productions has become a common practice both for business owners and policy makers to improve their energy and environmental efficiency however seldom previous studies on energy efficiency and or environmental performance evaluation took this role into account this paper aims to shed some light on the effects of sec on china s aggregated energy and environmental efficiency aeee within a parametric stochastic frontier analysis framework moreover influencing factors of regional efficiency score are also discussed using a pooled regression model the results indicate that sec poses significant effects on improving china s aeee and this impact appears obvious regional variation that regions with lower efficiency scores hold more extensive potential to improve their aeee by means of sec furthermore upgrading industrial structure and decreasing the proportion of coal in energy consumption make great sense to improve china s aeee

the relationship between gdp and electricity consumption in 10 asian countries the purpose of this study is to estimate the relationships between gdp and electricity consumption in 10 newly industrializing and developing asian countries using both single data sets and panel data procedures the empirical results from single data set indicate that the causality directions in the 10 asian countries are mixed while there is a uni directional short run causality running from economic growth to electricity consumption and a bi directional long run causality between electricity consumption and economic growth if the panel data procedure is implemented these empirical findings imply that electricity conservation policies through both rationalizing the electricity supply efficiency improvement to avoid the wastage of electricity and managing demand side to reduce the electricity consumption without affecting the end user benefits could be initiated without adverse effect on economic growth the findings on the long run relationship indicate that a sufficiently large supply of electricity can ensure that a higher level of economic growth

the determinants of aggregate energy use in west germany factor substitution technological change and trade this paper examines the determinants of production related energy use in west germany over the period 1976 1994 the approach is to estimate a system of share equations for energy capital low skilled labor high skilled labor and materials in the west german production sector taking account of biased technological change and increasing trade orientation while technological change is found to be energy saving increased openness is energy using i e tends to increase the energy share factor substitution biased technological change and trade contribute to the year to year volatility of energy intensity in the proportion 66 30 4 the results are robust across several specifications examined

economic growth and interfactor interfuel substitution in korea this paper investigates the impact of increases in oil consumption and changes in wage rates on the interfactor interfuel substitution in korea a two stage translog cost function is estimated to incorporate the feedback effect between the interfactor and interfuel substitution empirical results show that the substitutability complementarity relationships among factors and fuels exhibit substantially different patterns before and after 1989

why did the energy intensity fall in china s industrial sector in the 1990s the relative importance of structural change and intensity change there have been a variety of studies investigating the relative importance of structural change and real intensity change to the change in china s energy consumption in the 1980s however no detailed analysis to date has been done to examine whether or not the increased energy efficiency trend in the 1980s still prevailed in the 1990s this article has filled this gap by investigating the change in energy consumption in china s industrial sector in the 1990s based on the data sets of value added and end use energy consumption for the 29 industrial subsectors and using the newly proposed decomposition method of giving no residual our results clearly show that the overwhelming contributor to the decline in industrial energy use in the 1990s was the decline in real energy intensity indicating that the trend of real energy intensity declines in the 1980s at the 2 digit level was still maintained in the 1990s this conclusion still holds even if we lower the growth rate dramatically in line with the belief that the growth rate of china s gdp may be overestimated

network structure and strategic investments an experimental analysis abstract this paper experimentally analyzes the effect of network structures on individuals decisions in a game of strategic substitutes the theoretical basis for our experiment is the model of bramoulle and kranton 2007 as predicted we find that individuals are able to coordinate on equilibria but that coordination strongly depends on the network structure despite frequent coordination failures in graphs of size n 4 equilibrium play seems easier on network architectures with high low density and low high centrality if play converges it almost exclusively does so towards the predicted equilibria theoretical results with respect to welfare are also confirmed next to global graph structural properties we also explore the effects of local and individual factors we find that behavior on networks is affected by the number of direct neighbors but not by individuals risk attitudes apparently the global and the local structure of a network does not leave much explanatory room for individual effects that pertain to risk taking

what drives the change in china s energy intensity combining decomposition analysis and econometric analysis at the provincial level abstract we employ decomposition analysis and econometric analysis to investigate the driving forces behind china s changing energy intensity using a provincial level panel data set for the period from 1995 to 2009 the decomposition analysis indicates that a all of the provinces except for a few experienced efficiency improvement while around three fourths of the provinces economics became more energy intensive or remained unchanged b consequently the efficiency improvement accounts for more than 90 of china s energy intensity change as opposed to the economic structural change the econometric analysis shows that the rising income plays a significant role in the reduction of energy intensity while the effect of energy price is relatively limited the result may reflect the urgency of deregulating the price and establishing a market oriented pricing system in china s energy sector the implementation of the energy intensity reduction policies in the eleventh five year plan fyp has helped reverse the increasing trend of energy intensity since 2002 although the chinese government intended to change the industry led economic growth pattern it seems that most of the policy effects flow through the efficiency improvement as opposed to the economic structure adjustment more fundamental changes to the economic structure are needed to achieve more sustainable progress in energy intensity reduction

china s changing energy intensity trend a decomposition analysis china experienced a dramatic decline in energy intensity from the onset of economic reform in the late 1970s until 2000 but since then the rate of decline slowed and energy intensity actually increased in 2003 most previous studies found that most of the decline was due to technological change but disagreed on the role of structural change to the best of our knowledge no decomposition study has investigated the role of inter fuel substitution in the decline in energy intensity or the causes of the rise in energy intensity since 2000 in this paper we use logarithmic mean divisia index lmdi techniques to decompose changes in energy intensity in the period 1980 2003 we find that 1 technological change is confirmed as the dominant contributor to the decline in energy intensity 2 structural change at the industry and sector sub industry level actually increased energy intensity over the period of 1980 2003 although the structural change at the industry level was very different in the 1980s and in the post 1990 period 3 structural change involving shifts of production between sub sectors however decreased overall energy intensity 4 the increase in energy intensity since 2000 is explained by negative technological progress 5 inter fuel substitution is found to contribute little to the changes in energy intensity

substitution possibilities and determinants of energy intensity for china abstract this paper measures technological change factor demand and inter factor and inter fuel substitutability measures for china we use individual fuel price data and a two stage approach to estimate total factor cost functions and fuel share equations both inter factor and inter fuel substitution elasticities are calculated and the change in energy intensity is decomposed into its driving forces the results suggest that energy is substitutable for capital regionally and for labor nationally capital substitutes for energy more easily than labor does energy intensity changes vary by region but the major drivers seem to be budget effect and the adoption of energy intensive technologies which might be embodied in high level energy using exports and sectors capital investment and even old technique and equipment imports whether the trend in rising energy intensity continues will be significant for china and the rest of the world

the effect of link costs on simple buyer seller networks we examine experimentally how link costs affect the formation of links between a single seller and two potential buyers as well as the ensuing bargaining theory predicts that link costs lead to less competitive networks with one link rather than two links and that link costs do not affect the bargaining outcomes conditional on the network we find support for the first but not the second prediction 2 link networks form less frequently when there are link costs given that a 2 link network forms however a seller on average offers a smaller share of the pie to the buyers in the presence than in the absence of link costs this impact of link costs can be explained by a disutility for advantageous inequality on the part of the seller

can market oriented economic reforms contribute to energy efficiency improvement evidence from china since china accelerated its market oriented economic reforms at the end of 1992 its energy intensity has declined 3 6 annually over 1993 2005 however its energy intensity declined 4 2 annually during its first reform period 1979 1992 therefore can we conclude that the accelerated marketization since the end of 1992 has made no contribution to its energy efficiency improvement in order to answer this challenging question we examine the changes of energy own price elasticity as well as the elasticities of substitution between energy and non energy capital and labor in china during the periods of 1979 1992 and 1993 2003 generally in transition or developing economies holding the technology and output level fixed if the energy own price elasticity algebraic value declines or the substitution elasticity between factors rises they will contribute to energy efficiency improvement our empirical study finds that 1 during 1979 1992 the energy own price elasticity is positive 0 285 and capital energy labor energy are both morishima complementary which indicates a distorted energy price and inefficient allocation and 2 during 1993 2003 the own price elasticity for energy is negative 1 236 and capital energy and labor energy are both morishima substitute all factor demands become more elastic and all elasticities of substitution increase the implication is that the accelerated marketization contributes substantially to energy efficiency improvement since 1993 c 2006 elsevier ltd all rights reserved

energy intensity and its determinants in china s regional economies abstract this paper contributes to the existing literature as well as policy debates by examining energy intensity and its determinants in china s regional economies the analysis is based on a comprehensive database of china s regional energy balance constructed for this project through its focus on regional china this study extends the existing literature which mainly covers nationwide studies it is found in this paper that energy intensity declined substantially in china the main contributing factor is the improvement in energy efficiency changes in the economic structure have so far affected energy intensity modestly thus there is considerable scope to reduce energy intensity through the structural transformation of the chinese economy in the future

deregulation and growth in china s energy sector a review of recent development dramatic changes have taken place in china s energy sector over the past decade these changes have important implications for energy consumption trade production and regulatory policies in china and beyond the objective of this paper is to review some of the key issues associated with deregulation and growth in china s energy sector specifically the paper presents a survey of recent reforms in this sector it also analyses the impact of deregulation on energy policy ownership foreign investment and trade and sheds some lights on the sources of growth in china s energy sector

estimates of electricity saving potential in chinese nonferrous metals industry the paper analyzes the electricity saving potential of nonferrous metals industry in china the cointegration method is applied to estimate electricity intensity of chinese nonferrous metals industry in an effort to predict future electricity saving potential the results show that there is a long run equilibrium between electricity intensity and factors such as r d intensity industrial electricity price enterprise scale and labor productivity by means of scenario analysis we evaluate different possible measures that might be adopted to narrow down the electricity efficiency gap between nonferrous metals industry in china and that of japan the results indicate that more active electricity conservation policies are needed in order to reduce the electricity intensity of chinese nonferrous metals industry we also find that the electricity efficiency gap could be significantly narrowed by 2020 if proper electricity conservation policy is adopted finally based on the results of the scenario analysis future policy priorities are suggested

interfuel substitution a meta analysis interfuel substitutability has been of longstanding interest to the energy economics and policy community however no quantitative meta analysis has yet been carried out of this literature this paper fills this gap by analyzing a broad sample of studies of interfuel substitution in the industrial sector manufacturing industry or subindustries or macro economy of a variety of developed and developing economies publication bias is controlled for by including the primary study sample size in the meta regression results for the shadow elasticities of substitution between coal oil gas and electricity for forty six primary studies show that at the level of the industrial sector there are easy substitution possibilities between all the fuel pairs with the exception of gas electricity and coal electricity substitution possibilities seem more constrained at the macro level and less constrained in sub industries estimates also vary across countries publication bias does not seem to be present but model and data specification issues very significantly affect the estimates derived by each individual study estimates from cross section regressions are generally largest fixed effects panel estimates intermediate in magnitude and time series estimates are mostly much smaller econometric research suggests that the fixed effects estimates are likely the best among the existing studies though biased downwards

can foreign direct investment harness energy consumption in china a time series investigation abstract this study assesses the long run relationship and short run dynamics between foreign direct investment fdi and energy consumption in china applying the bounds testing approach to annual data from 1982 to 2012 we find that a stable fdi energy nexus exists in the long run and a 1 increase in fdi reduces energy consumption by 0 21 however this study shows a positive association between fdi and energy consumption in the short run attributing to the dominance of the scale effect our results remain robust to different measurements and estimators it is suggested that the chinese government shall support the inward fdi in the tertiary and energy sectors and strengthen local absorptive capacities to fully internalize fdi related knowledge spillovers in energy conservation

a theory of buyer seller networks this paper introduces a new model of exchange networks rather than markets of buyers and sellers it begins with the empirically motivated premise that a buyer and seller must have a relationship a link to exchange goods networks buyers sellers and the pattern of links connecting them are common exchange environments this paper develops a methodology to study network structures and explains why agents may form networks in a model that captures characteristics of a variety of industries the paper shows that buyers and sellers acting strategically in their own self interests can form the network structures that maximize overall welfare

energy intensity trend explained for sao paulo state abstract a sectorial analysis and a logarithmic mean divisia index lmdi technique are used in this paper to decompose the energy intensity of the state of sao paulo from 1995 to 2012 into the economic activity effect and the energy efficiency effect this study contributes the following observations 1 the world energy intensity has decreased steadily but the energy intensity of the sao paulo state has been volatile and has declined 2 3 since 1995 2 in the period of study declining energy intensity of the primary and tertiary sectors was observed in contrast the energy intensity of the secondary sector has been gradually increasing 3 the energy efficiency effect was the primary driver of energy intensity change through 2007 and the economic activity effect subsequently had an increasingly more important role in the change 4 the economic structure remained constant until 2004 when the services sector shift became more significant it is hypothesized that the increasing energy intensity from 2005 to 2009 was caused by the growth of inefficient sugarcane bagasse consumption

electricity consumption and economic growth in china abstract this paper applies the error correction model to examine the causal relationship between electricity consumption and real gdp for china during 1971 2000 our estimation results indicate that real gdp and electricity consumption for china are cointegrated and there is unidirectional granger causality running from electricity consumption to real gdp but not vice versa in order to overcome the constraints on electricity consumption the chinese government has to speed up the nation wide interconnection of power networks to upgrade urban and rural distribution grids and to accelerate rural electrification

electricity consumption and economic growth in china cointegration and co feature analysis abstract this paper applies the cointegration theory to examine the causal relationship between electricity consumption and real gdp gross demostic product for china during 1978 2004 our estimation results indicate that real gdp and electricity consumption for china are cointegrated and there is only unidirectional granger causality running from electricity consumption to real gdp but not the vice versa then hodrick prescott hp filter is applied to decompose the trend and fluctuation component of the gdp and electricity consumption series the estimation results indicate that there is cointegration between not only the trend components but also the cyclical components of the two series which implies that the granger causality is probably related with the business cycle the estimation results are of policy implication to the development of electric sector in china

electricity consumption and economic growth a case study of china abstract this study examines the relationship between electricity consumption and economic growth in china during 1950 1980 the results show that the income elasticity of electricity consumption is significantly greater than one ranging from 2 33 to 2 72 and the electricity gdp ratio or electricity intensity has increased over time with the growth rate of 7 3 pa during 1950 1980 these results suggest that the policy makers in china should pay more attention to electricity conservation policies and structural changes in production

an imbalanced development of coal and electricity industries in china china s coal and electricity industries have a strong reliance on each other however because of excessive invasion of government it is difficult for these two industries to form a stable reasonable and transaction cost saving relationships but long run disputes and quarrels this paper discusses the pricing policies and transaction relationship between these two industries from the historical perspective it begins with the discussion of coal coal market has become competitive since 1980 due to the system of dual track approach but coal sold to electricity was still tightly controlled by government guided pricing then the paper examines electricity investment and tariff reform unlike coal entry to electricity generation sector was gradually relaxed but generation and retailing tariffs are still strictly regulated as energy demand and prices soared after 2002 coal and electricity enterprises are all unsatisfied with the rule of price setting of coal sold to electricity industry this paper concludes that the deliberate low coal price policy does protect electricity industry from fuel cost fluctuation but harm coal industry allocative and productive efficiency are difficult to achieve in the long run

limited farsightedness in network formation pairwise stability jackson and wolinsky 1996 is the standard stability concept in network formation it assumes myopic behavior of the agents in the sense that they do not forecast how others might react to their actions assuming that agents are perfectly farsighted related stability concepts have been proposed we design a simple network formation experiment to test these extreme theories but find evidence against both of them the subjects are consistent with an intermediate rule of behavior which we interpret as a form of limited farsightedness on aggregate the selection among multiple pairwise stable networks and the performance of farsighted stability crucially depends on the level of farsightedness needed to sustain them and not on efficiency or cooperative considerations individual behavior analysis corroborates this interpretation and suggests in general a low level of farsightedness around two steps on the part of the agents

what induced china s energy intensity to fluctuate 1997 2006 abstract china is the second largest energy consumer in the world during 1997 2002 china s energy intensity declined by 33 however it rose by 10 7 over 2003 2005 and declined by 1 2 in 2006 what induced china s energy intensity to fluctuate so drastically industry accounts for approximately 70 of the total energy consumption in china in this paper we decompose china s industrial energy intensity changes between 1997 and 2002 into sectoral structural effects and efficiency effects measured by sectoral energy intensities at two digit level and including the shifts of product mix in the sub sector or firm level using tornqvist and sato vartia index methods the results show that in this period efficiency effects possibly contributed to a majority of the decline while the contribution from structural effects was less during 2003 2005 the excessive expansion of high energy consuming sub sectors and the high investment ratio were foremost sources of the increasing energy intensity attributed to the government efforts the energy intensity has started to decline slightly since july 2006 in future to save more energy in addition to technical progress china should attach more importance to optimizing its sectoral structure and lowering its investment ratio

output and substitution elasticities of energy and implications for renewable energy expansion in the ecowas region abstract this study estimates output and substitution elasticities of renewable energy and nonrenewable energy for the economic community of west african states ecowas and discusses implications for expanding the former the results show that nonrenewable energy promises greater benefits for ecowas economic transition with output elasticities averaging between 0 052 0 579 and 0 055 to 0 223 for nonrenewable energy and renewable energy respectively overall estimated technological progress is low 0 5 to 2 6 the bulk coming from input efficiency substitution elasticities 0 02 0 94 suggest potential for switching towards renewable energy notwithstanding scale economics and sitting problems inherent in renewable power generation challenge the opportunities for energy substitution a sustainable policy solution therefore appears to be one favoring scaled and efficient electricity generation from fossil energy in the short run with a gradual switch towards renewable power in the long run in general the applied model provides insights that energy efficiency enhances sustainable growth by propelling technological advancement especially when technical change is scale biased and factor augmenting the study also provides insights that impacts of exogenous shocks to inputs are temporary and hence do not jeopardize efforts aimed at scaling output through increased and efficient use of labor capital and energy especially nonrenewable energy

can african countries efficiently build their economies on renewable energy abstract the translog production model is estimated to provide insights on the effectiveness of renewable energy for africa the analysis shows that capital labor renewable energy and nonrenewable energy drive output in african countries with renewable energy being a higher driver of growth than the conventional fossil fuels over the sample period this finding is reflective of the fact that renewable sources like wind hydro and solar account for a greater share of power generation in most african countries output elasticities computed for both energy types reaffirm the results and suggest that eastern and central african countries are more renewable energy dependent than the other three regions in addition technological progress is driven mainly by the efficiency with which various factors and energy inputs are used while africa has great potential of facing out conventional fossil energy the discussion provided in this study suggests that such transition is limited in practice due to issues of scale economics and sitting problems

principles of network development and evolution an experimental study this paper reports on an experimental investigation of the evolution of networks and the individual decision making processes that guide it inasmuch as there is no history of experimental work on network formation part of the paper is devoted to the formulation of problems that can be examined experimentally the results are that networks composed of decentralized decision makers are capable of overcoming complex coordination and learning problems and converge to stationary when it does not occur significant and persistent inefficiencies can result the models of equilibration based on the principle of nash equilibrium are more reliable than models based on the alternative principles of efficiency seeking or focalness of the network configuration however individual decision making within networks is not in accordance with the simple decision rules of nash best response instead we observed complicated strategies that appear to trade short term profits in order to signal to and teach other agents the strategies required for long term profit maximization

equilibria in networks we study a model in which two carriers choose networks to connect cities and compete for customers we show that if carriers compete aggressively e g bertrand like behavior one carrier operating a single hub spoke network is an equilibrium outcome competing hub spoke networks are not an equilibrium outcome although duopoly equilibria in nonhub networks can exist if carriers do not compete aggressively an equilibrium with competing hub spoke networks exists as long as the number of cities is not too small we provide conditions under which all equilibria consist of hub spoke networks

information acquisition and exchange in social networks a central feature of social networks is information sharing the internet and related computing technologies shape the relative costs of private information acquisition and forming links with others this article presents an experiment on the effects of changing costs we find that a decline in relative costs of linking makes private investments more dispersed and gives rise to denser social networks aggregate investment falls but individuals access to investment remains stable due to increased networking the overall effect is an increase in individual utility and aggregate welfare

total factor energy efficiency of regions in china abstract this paper analyzes energy efficiencies of 29 administrative regions in china for the period 1995 2002 with a newly introduced index most existing studies of regional productivity and efficiency neglect energy inputs we use the data envelopment analysis dea to find the target energy input of each region in china at each particular year the index of total factor energy efficiency tfee then divides the target energy input by the actual energy input in our dea model labor capital stock energy consumption and total sown area of farm crops used as a proxy of biomass energy are the four inputs and real gdp is the single output the conventional energy productivity ratio regarded as a partial factor energy efficiency index is computed for comparison in contrast to tfee our index is found fitting better to the real case according to the tfee index rankings the central area of china has the worst energy efficiency and its total adjustmentof energy consumption amount is over half of china s total regional tfee in china generally improved during the research period except for the western area a u shape relation between the area s tfee and per capita income in the areas of china is found confirming the scenario that energy efficiency eventually improves with economic growth

experiments with network formation abstract we examine how groups of agents form trading networks in the presence of idiosyncratic risk and the possibility of contagion specifically four agents play a two stage finite repeated game in the first stage the network structure is endogenously determined through a non cooperative proposal game in the second stage agents play multiple rounds of a coordination game against all of their chosen neighbors after the realization of a payoff relevant shock while parsimonious our four agent environment is rich enough to capture all of the important interaction structures in the networks literature bilateral marriage local interaction star and uniform matching consistent with our theory marriage networks are the most frequent and stable network structures in our experiments we find that payoff efficiency is around 90 percent of the ex ante payoff dominant strategies and the distribution of network structures is significantly different from that which would result from random play

strong and weak links many of the interesting issues in the economics of networks information transmission individual incentives with local externalities investments in connections and the structure of complex networks have to do with the quality of links between individuals entities however most of the research to date has assumed a one zero formulation of connections i argue that it is possible to write down tractable models of quality of links and that analyzing such models yields fresh insights into these issues jel c72 d85 z13

what goes up recent trends in china s energy consumption since 1996 china s energy output has dropped by 17 while primary energy use has fallen by 4 driven almost entirely by shrinking output from coal mines and declining direct use since china is the world s second largest emitter of greenhouse gases it is important to understand the sources of this apparent transformation and whether it portends a permanent change in patterns of energy use this remarkable reversal of the long term expansion of energy use has occurred even as the economy has continued to grow albeit more slowly than in the early 1990s generation of electric power has risen implying a steep fall in end uses particularly in industry available information points to a variety of forces contributing to this phenomenon including rapid improvements in coal quality structural changes in industry shutdowns of factories in both the state owned and non state segments of the economy improvements in end use efficiency and greater use of gas and electricity in households a combination of slowing economic growth industrial restructuring broader economic system reforms and environmental and energy efficiency policies has apparently led to at least a temporary decline in and perhaps a long term reduction in the growth of energy use and therefore greenhouse gas emissions

energy consumption economic growth and prices a reassessment using panel vecm for developed and developing countries this paper reinvestigates the energy consumption gdp growth nexus in a panel error correction model using data on 20 net energy importers and exporters from 1971 to 2002 among the energy exporters there was bidirectional causality between economic growth and energy consumption in the developed countries in both the short and long run while in the developing countries energy consumption stimulates growth only in the short run the former result is also found for energy importers and the latter result exists only for the developed countries within this category in addition compared to the developing countries the developed countries elasticity response in terms of economic growth from an increase in energy consumption is larger although its income elasticity is lower and less than unitary lastly the implications for energy policy calling for a more holistic approach are discussed c 2006 elsevier ltd all rights reserved

network structure in a link formation game an experimental study in this article we use an experiment to evaluate the performance of alternative refinements in a myersonian link formation game with a supermodular payoff function our results show that a non cooperative refinement the global games gg approach outperforms alternative cooperative refinements strong nash equilibrium coalition proof nash equilibrium and pairwise stable nash equilibrium in explaining the observed experimental behavior in the static game of complete information with three players the results are robust to some comparative statics and the gg approach shows a high predictive power under incomplete information however under repeated interaction or with a greater number of players the gg approach loses predictive power but so do the cooperative refinements the results illustrate the importance of coordination failure in practice and the need to design mechanisms to reduce this effect in practical decision making problems jel c70 c92 d20 d44 d82

impacts of technological change on factor substitution between energy and other inputs within us agriculture 1950 79 abstract past efforts to estimate elasticities of substitution between inputs both in and out of agriculture have usually made use of a single data set to provide the elasticities between the input pairs and have led to highly conflicting results particularly with respect to the substitution between capital or machinery and energy this study reveals that the elasticity of substitution between a number of input pairs in agriculture can vary by substantial amounts depending on the time period used for the estimation energy in agriculture which was a complement for machinery in the 1950s was a substitute by the 1970s

china s energy consumption change from 1987 to 2007 a multi regional structural decomposition analysis abstract increasing use of energy has helped to stimulate china s economy despite central planning china has great differences in economic development energy endowment and energy consumption across its regions this paper uses the structural decomposition approach to uncover the regional disparities in energy consumption from 1987 to 2007 we also examine six possible key factors for the change in energy consumption by region we find that final demand change outpaced efficiency improvements to drive up energy use in all regions between 1987 and 2007 more surprisingly from 2002 to 2007 it appears that changes in production structure enhanced energy consumption in most regions china produced more energy intensive goods for capital investment and export we contend that improving the energy efficiency of key energy intensive sectors would lead a significant decline in energy intensity energy directly or indirectly is flowing from northwest central and north china to coastal regions regional specific policies should be designed to promote production structure change and curb energy demand

energy consumption in china past trends and future directions abstract in 2003 china s energy consumption amounted to 1678 million tonnes coal equivalent mtce making china the world s second largest consumer behind only the united states china is now also one of the largest oil importers in the world with an economy that is expected to maintain a rate of growth of 7 8 for decades china s role in the world energy market becomes increasingly influential this makes it important to predict china s future demand for energy the objective of this paper is to apply the bayesian vector autoregressive methodology to forecast china s energy consumption and to discuss potential implications the results of this paper suggest that total energy consumption should increase to 2173 mtce in 2010 an annual growth rate of 3 8 which is slightly slower than the average rate in the past decade the slower growth reflects expected slower economic growth and a decline in energy consumption due to structural changes in the chinese economy

changing customary marine resource management practice and institutions the case of sasi lola in the kei islands indonesia summary sasi the spatial and temporal closure of fields forests reefs and fishing grounds is a conspicuous feature of many moluccan societies despite increasing domestic and international awareness and praise of what is considered by many analysts to be an exemplary indigenous resource conservation tradition the practice is in decline in many parts of the thousand island province and in many villages has disappeared altogether this study examines the practice of managing trochus niloticus topshell harvests in ohoirenan a village on the eastern coast of kei besar in the district of southeast maluku trochus is one of the most important sources of cash income for kei villagers and until recently for the district government as well since 1987 trochus has been classified as a protected species in indonesia and regulations have been issued to regulate the cultivation harvest and transport of this and other protected species this article briefly introduces kei customary law and property relations followed by a description of sasi and its application to reef habitats and trochus harvests examining a territorial conflict between ohoirenan and a neighboring village and more recent contention arising from government eaorts to protect the species the article explores issues of society nature and state society relations as pertain to natural resource management in indonesia sasi continues to function as an exemplary common property resource cpr management institution in ohoirenan assuring equitable distribution of the benefits deriving from controlled extraction of a local resource but erratic and uneven enforcement of one size fits all centralized conservation policy and law combined with collusion and self interest on the part of various parties combine to threaten both the resource and the institutions that have successfully and sustainably managed it in this region within the context of a centralized state led natural resource management system the national species protection precludes the establishment of sensible mutually beneficial co management regimes that could serve the interests and employ the inherent knowledge and capabilities of local communities traders and government agents 2000 published by elsevier science ltd all rights reserved

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

the effects of social networks on employment and inequality we develop a model where agents obtain information about job opportunities through an explicitly modeled network of social contacts we show that employment is positively correlated across time and agents moreover unemployment exhibits duration dependence the probability of obtaining a job decreases in the length of time that an agent has been unemployed finally we examine inequality between two groups if staying in the labor market is costly and one group starts with a worse employment status then that group s drop out rate will be higher and their employment prospects will be persistently below that of the other group

does human capital matter for energy consumption in china this article investigates the dynamic relationship between human capital and energy consumption using chinese provincial data over the period 1990 2010 considering for cross sectional dependence and parameter heterogeneity across space and over time we identify a significant and negative human capital energy consumption relationship in china specifically we find that a 1 increase in human capital reduces energy consumption by a range between 0 18 and 0 45 furthermore this negative relationship can be attributed to stronger accumulation of post school human capital in eastern china this finding suggests that energy conservation in china could be achieved by improving post school human capital components such as on the job training experience and learning by doing

experimental games on networks underpinnings of behavior and equilibrium selection in this paper we describe a series of laboratory experiments that implement specific examples of a general network structure specifically actions are either strategic substitutes or strategic complements and participants have either complete or incomplete information about the structure of a random network since economic environments typically have a considerable degree of complementarity or substitutability this framework applies to a wide variety of settings we examine behavior and equilibrium selection the degree of equilibrium play is striking in particular with incomplete information behavior closely resembles the theoretical equilibrium whenever this is unique when there are multiple equilibria general features of networks such as connectivity clustering and the degree of the players help to predict informed behavior in the lab people appear to be strongly attracted to maximizing aggregate payoffs social efficiency but there are forces that moderate this attraction 1 people seem content with in the aggregate capturing only the lion s share of the efficient profits in exchange for reduced exposure to loss and 2 uncertainty about the network structure makes it considerably more difficult to coordinate on a demanding but efficient equilibrium that is typically implemented with complete information

government action social capital and development reviewing the evidence on synergy abstract instead of assuming a zero sum relationship between government involvement and private cooperative efforts the five preceding articles argue for the possibility of state society synergy that active government and mobilized communities can enhance each others developmental efforts this article draws on these articles to explore the forms and sources of state society synergy i argue that synergy usually combines complementarity with embeddedness and is most easily fostered in societies characterized by egalitarian social structures ard robust coherent state bureaucracies i also argue however that synergy is constructable even in the more adverse circumstances typical of third world countries

short and long run effects between oil consumption and economic growth in china this paper examines both the equilibrium relationship and the predictability between oil consumption and economic growth in china time series variables are employed in empirical tests cointegration tests suggest that these two variables tend to move together in the long run in addition granger causality tests indicate that oil consumption could be a useful factor that forecasts changes in the economy in the short run as well as in the long run the oil consumption is found to have great effects on the economy this is because the enormous use of oil in sectors like the industry may have directly pushed the economy however this finding would probably stimulate faster growth in oil consumption and so should be concerned with care conversely economic growth could be used as a predictive factor forecasting oil consumption only in the long run economic growth appears to have small effects on oil use this could be attributed largely to china s energy consumption structure coal constitutes most of the energy consumption and thus the considerable demand for energy resulting from rapid economic growth could be mostly explained by the mass use of coal

growing stars a laboratory analysis of network formation abstract efficient information dispersion occurs with star networks where small numbers of agents gather information for distribution to larger groups previous studies have shown that ex ante heterogeneity in payoff incentives among agents is sufficient for reliable star formation goeree et al 2009 using laboratory experiments we show stars reliably emerge among ex ante homogeneous agents under specific institutional environments our results help to explain why star networks emerge frequently among homogeneous groups particularly rural farming communities conley and udry 2010 our findings have implications for developing countries where it is crucial to create mechanisms to promote efficient information sharing

how do industrialization and trade openness influence energy intensity evidence from a path model in case of bangladesh abstract nowadays multifaceted interdependence between macroeconomic variables results in an extended list of factors that have diverse impacts on energy intensity thus sustaining energy intensity at a desired level demands advanced studies to investigate the multifarious influences of its factors and ensure proactive measures to deal with them this paper aims to set up a path model to analyze the direct and indirect impacts of industrialization and trade openness on energy intensity in bangladesh the results corroborate that industrialization has a direct positive influence on energy intensity where trade openness shows a direct negative effect on it and both industrialization and trade openness have negative indirect impact on energy intensity through technological innovation and economic growth respectively in case of individual total impacts only industrialization affects energy intensity positively where trade openness technological innovation and economic growth negatively do based on the empirical results some policy implications regarding energy intensity and effects of its factors on it are also presented

delving into liberia s energy economy technical change inter factor and inter fuel substitution abstract the industrial energy mix of liberia is dominated by petroleum products this has generated serious environmental problems contributing immensely to co 2 emissions and other pollutants in the country this study has attempted to investigate the potential for inter factor and inter fuel substitution between capital labor petroleum and electricity in liberia by employing a translog production and cost function approach ridge regression procedure has been adopted to estimate the parameters of the function due to multicollinearity in the data estimation results show that all inputs are substitutes these suggest that price based policies coupled with capital subsidy programs can be adopted to redirect technology use towards cleaner energy sources like electricity hence retaining the ability to fuel the economy while also mitigating greenhouse gas ghg emissions substitution between energy and labor and energy and capital implies that removal of price ceilings on energy in liberia would tend to reduce energy use and increase capital and labor intensiveness notwithstanding the study seems to show no evidence of convergence in relative technological progress of the four inputs implying that petroleum will continue to play a dominant role in the energy consumption mix of liberian industry while labor investment will continue to outweigh capital inputs finally the findings of this study provide general insights and underscore the importance of policies that focus on installed capacity of renewable electricity energy intensity targets as well as merger of enterprises

factor substitution and energy productivity fluctuation in china a parametric decomposition analysis abstract technical research on energy productivity can support government officials as they evaluate practical energy policies for the future this study proposed a parametric method to decompose china s energy productivity rate of change into six factors based on a theoretical stochastic frontier analysis the method was applied to conduct an empirical study using inter provincial panel data in china from 1995 to 2012 the results highlighted three key points first the general rate of change in energy productivity was mainly influenced by a steady positive rate of change in technical progress combined with a steady negative rate of change in technical efficiency the core factors causing fluctuations in energy productivity included a positive rate of change in the substitution of capital and energy and a negative rate of change in the substitution of labor and energy second from a geographic perspective provinces with a high rate of change in technical progress experienced a weaker deterioration in technical efficiency however the rate of change in technical efficiency tends to decline as the rate of change in technical progress increases third there is a similar changing trend between the substitution of capital and energy and the substitution of labor and energy

between state markets and households a neoinstitutional analysis of local organizations and institutions abstract the current and foreseeable trend toward a diminished role of the state in most economic activities including rural development activities offers new opportunities for local organizations and institutions lois at the same time many of the problems and shortcomings to which states and their activities have been vulnerable are also potentially applicable to lois to be successful in themselves as well as in fostering rural economic development rural lois and their activities must be carefully designed and appropriately integrated with markets other lois and the state this paper reviews the relevant literature on conditions for success and then goes on to derive from this review including some relevant experience some suggestions for policy and practice

elasticity of substitution and technical efficiency evidence from the us electricity generation abstractthe implications of national or regional energy policies for technical efficiency and environmental outcomes in electricity generation depend on fossil fuel input substitution this study u

the impacts of energy prices on energy intensity evidence from china in this paper we present a review of the deregulation of energy prices in china between 1985 and 2004 and assess the impacts of changes in energy prices on aggregate energy intensity and coal oil electricity intensity we used time series data to provide estimates of energy price elasticities empirical results showed that 1 the own price elasticities of coal oil and aggregate energy were negative in periods both before and after 1995 implying that higher relative prices of different energy types lead to the decrease in coal oil and aggregate energy intensities however the positive own price elasticity of electricity after 1995 probably indicates that the price effect was weaker than other factors such as income effect and population effect 2 the impacts of energy prices were asymmetric over time 3 sectoral adjustment also drove the decrease in aggregate energy intensity although raising energy prices to boost efficiency of energy use seems to be an effective policy tool other policy implications concerned with energy prices such as energy supply security and fuel poverty must also be considered

what drives energy efficiency new evidence from financial crises abstract using a sample of 100 countries from 1980 to 2015 this paper investigates the impact of foreign direct investment fdi imports gross capital formation and industry value added on energy efficiency before and after the 2008 global financial crisis our findings reveal that failing to control for economic downturns may lead to misleading results moreover we find that the effects of these channels are different between low middle and high income countries our study also shows that the effect of fdi on energy savings is inverted u shaped whereas the effect of imports on energy savings is u shaped when we control for the income level of the countries