asymmetry in retail wholesale and shipping point pricing for fresh vegetables the linkage among retail wholesale and shipping point prices for a select group of fresh vegetables is measured using wolffram s asymmetry model procedures for dealing with discontinuous time series are shown and granger s causality test is used to show the direction of the price linkage wholesale prices are shown to lead both retail and shipping point prices asymmetry in the retail wholesale response indicates that wholesale price decreases are reflected at the retail more so than are wholesale price increases wholesale price decreases are more fully passed through to the shipping point relative to wholesale increases

how renewable energy consumption lower global co2 emissions evidence from countries with different income levels significant difference in the emission renewables nexus across countries with different income levels is frequently ignored in previous studies to empirically investigate whether the effect of renewable energy consumption on carbon dioxide co2 emissions differs across countries with different income levels the emission growth renewables nexus for a global panel of 120 countries and four income based subpanels over the period 1995 2015 is examined fully considering the potential cross sectional dependence and slope heterogeneity a series of econometric techniques allowing for cross sectional dependence and slope heterogeneity is utilised cross sectional dependence and slope heterogeneity are confirmed for the global panel as well as for all four subpanels only for the global panel high income subpanel and upper middle income subpanel is the environmental kuznets curve ekc hypothesis valid renewable energy consumption has a negative effect on co2 emissions but its effect is not significant the mitigation effect may be obscured by higher economic growth and increasing non renewable energy consumption the global panel and four subpanels provide mixed directionality of causality among the variables suggesting that for various income based subpanels significant differences exist in the effect of renewable energy consumption on co2 emissions especially highlighting in various direct and indirect influencing paths between renewable energy consumption and co2 emissions

vertical price transmission in the turkish poultry market the avian influenza crisis this article assesses the impact of the avian influenza ai outbreak in the turkish poultry market by focusing on price transmission at producer and retail levels the relationship and patterns of transmission between producer and retail prices are analysed by estimating a regime switching vector error correction model with three regimes an ai information index variable is developed and used to determine regime switching results suggest that consumer prices adjust to disequilibrium caused by the ai crisis while producer prices are sticky and slowly responsive

renewable energy non renewable energy and economic growth in brazil this study employs brazil s yearly statistics from 1980 to 2010 to explore the causal relationships between the real gdp and four types of energy consumption non hydroelectric renewable energy consumption nhrec total renewable energy consumption trec non renewable energy consumption nrec and the total primary energy consumption tec the cointegration test reveals a long run equilibrium among brazil s real gdp labour capital and each of the four types of consumption the development of the brazilian economy has close ties with capital formation and labour force the influence of nhrec trec on real output is positive and significant while the impacts by nrec tec are insignificant the results from the vector error correction models reveal a unidirectional causality from nhrec to economic growth a bidirectional causality between economic growth and trec and a unidirectional causality from economic growth to nrec or tec without feedback in the long run these findings suggest that brazil is an energy independent economy and that economic growth is crucial in providing the necessary resources for sustainable development expanding renewable energy would not only enhance brazil s economic growth and curb the deterioration of the environment but also create an opportunity for a leadership role in the international system and improve brazil s competition with more developed countries

economic growth and pollutant emissions in tunisia an empirical analysis of the environmental kuznets curve abstract this paper investigates the relationship between economic growth and pollutant emissions for a small and open developing country tunisia during the period 1961 2004 the investigation is made on the basis of the environmental kuznets curve hypothesis using time series data and cointegration analysis carbon dioxide co 2 and sulfur dioxide so 2 are used as the environmental indicators and gdp as the economic indicator our results show that there is a long run cointegrating relationship between the per capita emissions of two pollutants and the per capita gdp an inverted u relationship between so 2 emissions and gdp has been found with income turning point approximately equals to 1200 constant 2000 prices or to 3700 in ppp constant 2000 prices however a monotonically increasing relationship with gdp is found more appropriate for co 2 emissions furthermore the causality results show that the relationship between income and pollution in tunisia is one of unidirectional causality with income causing environmental changes and not vice versa both in the short run and long run this implies that an emission reduction policies and more investment in pollution abatement expense will not hurt economic growth it could be a feasible policy tool for tunisia to achieve its sustainable growth in the long run

rockets and feathers understanding asymmetric pricing prices rise like rockets but fall like feathers this stylized fact of most markets is con rmed by many empirical studies in this paper i develop a model with competitive rms and rational partially informed consumers where such asymmetric response to costs by rms emerges naturally in contrast to public opinion and past work collusion is not necessary to explain such result using a rich dataset of retail gasoline prices i nd the observed price dispersion pattern to be consistent with the model s prediction

effects of packers inventory and market power on price adjustments in the u s beef industry this study examines effects of packers inventory and market power on their price adjustment behaviour in the u s beef industry econometric model used in the study allows inventory and market pow

coal consumption and economic growth evidence from a panel of oecd countries this study examines the relationship between coal consumption and economic growth for 25 oecd countries within a multivariate panel framework over period 1980 2005 the larsson et al 2001 panel cointegration test indicates there is a long run equilibrium relationship between real gdp coal consumption real gross fixed capital formation and the labor force the respective coefficients for real gross fixed capital formation and the labor force are positive and statistically significant whereas the coefficient for coal consumption is negative and statistically significant the results of the panel vector error correction model reveal bidirectional causality between coal consumption and economic growth in both the short and long run however the bidirectional causality in the short run is negative

time inconsistent preferences and social security in this paper we examine the role of social security in an economy populated by overlapping generations of individuals with time inconsistent preferences who face mortality risk individual income risk and borrowing constraints we find that unfunded social security lowers the capital stock output and consumption for consumers with time consistent or time inconsistent preferences however it may raise or lower welfare depending on the strength of time inconsistency

the toxic intensity of industrial production global patterns trends and trade policy this paper exploits a newly developed data set to investigate recent changes in the international distribution of industrial pollution in particular the authors examine three issues 1 the relationship between the toxic intensity of industrial production and the level of economic development 2 the impact of oecd environmental regulation on global changes in toxic intensity and 3 the relationship between trade policy and the toxic intensity of industrial production in ldc s 10 refs

vertical price transmission in the egyptian tomato sector after the arab spring this study assesses price transmission along the egyptian tomato food marketing chain in the period that followed the arab spring which accentuated economic precariousness in egypt static and tim

disaggregated energy consumption and gdp in taiwan a threshold co integration analysis abstract energy consumption growth is much higher than economic growth for taiwan in recent years worsening its energy efficiency this paper provides a solid explanation by examining the equilibrium relationship between gdp and disaggregated energy consumption under a non linear framework the threshold co integration test developed with asymmetric dynamic adjusting processes proposed by hansen and seo hansen b e seo b 2002 testing for two regime threshold cointegration in vector error correction models journal of econometrics 110 293 318 is applied non linear co integrations between gdp and disaggregated energy consumptions are confirmed except for oil consumption the two regime vector error correction models vecm show that the adjustment process of energy consumption toward equilibrium is highly persistent when an appropriately threshold is reached there is mean reverting behavior when the threshold is reached making aggregate and disaggregated energy consumptions grow faster than gdp in taiwan

price transmission in the spanish bovine sector the bse effect a regime switching vector error correction model is applied to monthly price data to assess the impact of bovine spongiform encephalopathy bse outbreaks on price relationships and patterns of transmission among farm and retail markets for bovines in spain to evaluate the degree to which price transmission is affected by bse food scares a bse food scare index is developed and used to determine regime switching results suggest that bse scares affect beef producers and retailers differently consumer prices are found to be weakly exogenous and not found to react to bse scares while producer prices are conversely adjusted the magnitude of the adjustment is found to depend on the magnitude of the bse scare

an econometric study of co2 emissions energy consumption income and foreign trade in turkey abstract this study attempts to empirically examine the dynamic causal relationships between carbon emissions energy consumption income and foreign trade in the case of turkey using the time series data for the period 1960 2005 this research tests the interrelationship between the variables using the bounds testing to cointegration procedure the bounds test results indicate that there exist two forms of long run relationships between the variables in the case of first form of long run relationship carbon emissions are determined by energy consumption income and foreign trade in the case of second long run relationship income is determined by carbon emissions energy consumption and foreign trade an augmented form of granger causality analysis is conducted amongst the variables the long run relationship of co2 emissions energy consumption income and foreign trade equation is also checked for the parameter stability the empirical results suggest that income is the most significant variable in explaining the carbon emissions in turkey which is followed by energy consumption and foreign trade moreover there exists a stable carbon emissions function the results also provide important policy recommendations

search with learning understanding asymmetric price adjustments in many retail markets prices rise faster than they fall we develop a model of search with learning to explain this phenomenon of asymmetric price adjustments by extending our static game analysis to the dynamic setting we demonstrate that asymmetric price adjustments arise naturally when a positive cost shock occurs all the searchers immediately learn the true state the search intensity and hence the prices fully adjust in the next period when a negative cost shock occurs it takes longer for nonsearchers to learn the true state and the search intensity increases gradually leading to slow falling of prices

a nonlinear approach to us gnp a univariate nonlinear model is estimated for us gnp that on many criteria outperforms standard linear models the estimated model is of the threshold autoregressive type and contains evidence of asymmetric effects of shocks over the business cycle in particular the nonlinear model suggests that the post 1945 us economy is significantly more stable than the pre 1945 us economy

growth and renewable energy in europe a random effect model with evidence for neutrality hypothesis this is an empirical study on the causal relationship between economic growth and renewable energy for 27 european countries in a multivariate panel framework over the period 1997 2007 using a random effect model and including final energy consumption greenhouse gas emissions and employment as additional independent variables in the model empirical results do not confirm causality between renewable energy consumption and gdp although panel causality tests unfold short run relationships between renewable energy and greenhouse gas emissions and employment the estimated cointegration factor refrains from unity indicating only a weak if any relationship between economic growth and renewable energy consumption in europe suggesting evidence of the neutrality hypothesis which can partly be explained by the uneven and insufficient exploitation of renewable energy sources across europe

causality relationship between electricity consumption and gdp in bangladesh in this paper we examine the causal relationship between the per capita electricity consumption and the per capita gdp for bangladesh using cointegration and vector error correction model our results show that there is unidirectional causality from per capita gdp to per capita electricity consumption however the per capita electricity consumption does not cause per capita gdp in case of bangladesh the finding has significant implications from the point of view of energy conservation emission reduction and economic development

price volatility in niger millet markets price volatility of food staples is one of the most complex factors affecting food security recent food price crises have raised academic interest in improved volatility assessment the widely held assumption in econometric volatility models that long run volatility is constant has been recently questioned and partly blamed for these crises a multiplicative mgarch model recently proposed by bauwens et al is used in this article to model price volatility transmission along the niger millet marketing chain results suggest important volatility links between consumer and producer prices as well as noteworthy differences between short and long run price dynamics

residential electricity demand dynamics in turkey abstract this article provides fresh empirical evidences for the income and price elasticies of the residential energy demand both in the short run and long run for turkey over the period 1968 2005 using the bounds testing procedure to cointegration the computed elasticities of income and price are consistent with the previous studies and as expected the long run elasticities are greater than the short run elasticities an augmented form of granger causality analysis is implemented among residential electricity income price and urbanization in the long run causality runs interactively through the error correction term from income price and urbanization to residential energy but the short run causality tests are inconclusive the parameter stability of the short run as well as long run coefficients in the residential energy demand function are tested the results of these tests display a stable pattern

prices rise faster than they fall output prices tend to respond faster to input increases than to decreases this tendency is found in more than two of every three markets examined it is found as frequently in producer goods markets as in consumer goods markets in both kinds of markets the asymmetric response to cost shocks is substantial and durable on average the immediate response to a positive cost shock is at least twice the response to a negative shock and that difference is sustained for at least five to eight months unlike past studies which documented similar asymmetries in selected markets gasoline agricultural products etc this one uses large samples of diverse products 77 consumer and 165 producer goods accordingly the results suggest a gap in an essential part of economic theory as a start on filling this gap the study finds no asymmetry in the resonse of an individual decision maker a supermarket chain to its costs but it finds above average asymmetry where a cost shock is filtered through a fragmented w

is the share of renewable energy sources determining the co2 kwh and income relation in electricity generation abstract the present study examines the long and short run causality of the share of renewable energy sources res in the relation between carbon dioxide emissions of electricity generation co2 kw h and real income gdp for 20 european countries over 1991 2010 and in sub period 2001 2010 we used cointegration analysis and the innovative accounting approach that includes forecast error variance decomposition and impulse response functions irfs our results provide supportive evidence for the validity of the environmental kuznets curve ekc and suggest that renewable energy can be a potential determining driver of the difference in the emissions income relations across european countries and a significant way of reducing co2 kw h moreover in this particular 2001 2010 subperiod the share of renewable energy in electricity output will have significant influence on the shape of the ekc which will shift downward as res increases suggesting lower environmental costs of development in these sub period 2001 2010 all the results show a common pattern expected of co2 emissions in electricity generation after the european directive 2001 77 ec and reveal the importance of the interactive impact of renewable energy sources and gdp to reduce the co2 emissions in electricity generation

renewable energy consumption and income in emerging economies abstract increased economic growth and demand for energy in emerging economies is creating an opportunity for these countries to increase their usage of renewable energy this paper presents and estimates two empirical models of renewable energy consumption and income for a panel of emerging economies panel cointegration estimates show that increases in real per capita income have a positive and statistically significant impact on per capita renewable energy consumption in the long term a 1 increase in real income per capita increases the consumption of renewable energy per capita in emerging economies by approximately 3 5 long term renewable energy per capita consumption price elasticity estimates are approximately equal to 0 70

renewable and non renewable energy consumption growth nexus evidence from a panel error correction model abstract unlike previous renewable energy consumption growth studies this study examines the relationship between renewable and non renewable energy consumption and economic growth for 80 countries within a multivariate panel framework over the period 1990 2007 the pedroni 1999 2004 heterogeneous panel cointegration test show a long run equilibrium relationship between real gdp renewable energy consumption non renewable energy consumption real gross fixed capital formation and the labor force with the respective coefficient estimates positive and statistically significant there is little difference in the elasticity estimates with respect to renewable and non renewable energy consumption the results from the panel error correction model reveal bidirectional causality between renewable and non renewable energy consumption and economic growth in both the short and long run also there is bidirectional short run causality between renewable and non renewable energy consumption indicative of substitutability between the two energy sources

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

the interaction of population growth and environmental quality an important question for policy is whether holding constant per capita income and other relevant factors population pressures have a significant effect upon environmental degradation the authors examine the effect of population pressures upon deforestation in 64 developing countries in an attempt to provide relevant empirical findings data on deforestation were drawn from the food and agriculture organizations production yearbook results suggest that a relationship exists between per capita income and deforestation and that for africa rural population density shifts the relationship upward the increase in the rate of deforestation levels off as income increases the rate of growth in per capita income also has a significant negative impact upon deforestation although the magnitude of the effect is small the authors close in stressing that reducing the rate of population growth is not necessarily the best way to reduce the rate of deforestation deforestation in developing countries is really a problem of market failure since property rights are often neither defined nor enforced there is essentially no private cost of deforestation with no long term stake in the land people have no incentive to use land efficiently this situation must be addressed in conjunction with the problems of poverty and population growth

environmental kuznets curve for carbon emissions in pakistan an empirical investigation this study investigates the relationship between carbon emissions income energy consumption and foreign trade in pakistan for the period 1972 2008 by employing the johansen method of cointegration the study finds that there is a quadratic long run relationship between carbon emissions and income confirming the existence of environmental kuznets curve for pakistan moreover both energy consumption and foreign trade are found to have positive effects on emissions the short run results have however denied the existence of the environmental kuznets curve the short run results are unique to the existing literature in the sense that none of the long run determinants of emissions is significant the contradictory results of short and long run give policy makers the opportunity to formulate different types of growth policies for the two terms taking environmental issues into consideration in addition the uni directional causality from growth to energy consumption suggests that the policy makers should not only focus on forecasting future demand for energy with different growth scenarios but also on obtaining the least cost energy furthermore the absence of causality from emissions to growth suggests that pakistan can curb its carbon emissions without disturbing its economic growth

price transmission and asymmetric adjustment in the u s beef sector the u s livestock sector has experienced numerous structural changes in recent years for example the meatpacking industry has experienced many mergers and acquisitions leading to significant increases in industry concentration in particular the four firm concentration ratio for steer and heifer slaughter a frequently cited statistic and an important indicator of industry concentration increased from 35 7 in 1980 to 79 8 in 1997 usda there have also been significant regional shifts in livestock production and changes in marketing practices with decreased use of public markets in many areas for some products traditional auction markets have been largely replaced by contract production and sales cattle inventories have also trended downward over the last two decades this has been accompanied by decreases in the number of producers and in some cases with significant increases in the scale of operations the vertical transmission of shocks among various levels of the market is an important characteristic describing the overall operation of the market of course price is the primary mechanism by which various levels of the market are linked the extent of adjustment and speed with which shocks are transmitted among producer wholesale and retail market prices is an important factor reflecting the actions of market participants at alternative market levels the nature speed and extent of adjustments to market shocks may also have important implications for marketing margins spreads and mark up pricing practices an extensive literature has examined mar

examining the bi directional long run relationship between renewable energy consumption and gdp growth abstract the bi directional long run relationship between renewable energy consumption and gdp growth has been investigated in high income upper middle income lower middle income and high income countries to achieve this goal the fully modified ols was utilized the results revealed that 79 of the countries have a positive bi directional long run relationship between renewable energy consumption and gdp growth this represents the feedback hypothesis on the other hand 19 of the countries showed no long run relationship between the variables this represents the neutrality hypothesis besides 2 of the countries showed a one way long run relationship from gdp growth to renewable energy consumption confirming the conservation hypothesis and from renewable energy consumption and gdp growth representing the growth hypothesis despite the mixed results across countries it has been proved that the more persistent and significant the bi directional long run relationship between the variables is the higher the income countries are

electricity consumption and economic growth bounds and causality analyses of opec members this paper investigates the relationship between electricity consumption and economic growth for opec members the bounds test yields evidence of a long run relationship between electricity consumption and economic growth for all opec members causality results suggest that economic growth is dependent on electricity consumption in five countries less dependent in three countries and independent in three countries because these countries do not necessarily share similar political and economic traits no single universal policy implication can be inferred from the results the disparities across these causality results therefore stress the importance of formulating causality explanations while taking into account the particularities of individual countries rather than blindly applying the conventional interpretations

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

dynamic modeling of causal relationship between energy consumption co2 emissions and economic growth in india abstract the paper investigates the causality relationships among energy consumption carbon dioxide co2 emissions and income in india using a dynamic modeling approach the paper also utilises an innovation accounting method to investigate profiles of the macroeconomic variables persisting from an unanticipated shock in innovation our results provide evidence of the existence of bi directional granger causality between energy consumption and co2 emissions in the long run but neither co2 emissions nor energy consumption causes movements in real income there is no causality relationship between energy consumption and income in any direction in the long run implying that india could follow energy conservation and efficiency improvement policies without impeding economic growth this will allow india to reduce co2 emissions without affecting its economic growth and contribute significantly towards combating global warming as well

global warming agreements international trade and energy carbon embodiments an input output approach to the italian case abstract in the kyoto protocol the absence of green house gases ghgs commitments of developing countries non annex i and the more flexible terms of implementation which are allowed to countries shifting toward a market economy transition economies naturally lead to the absence or to less constraining national measures and policies of reduction of the ghgs emissions which in turn may determine a comparative advantage in the production of the highest energy carbon intensive commodities for these countries these arguments are valid also considering the future implementation of the european emission allowance trading scheme eats thus developing countries may become a haven for the production of not environmental friendly commodities in this case the so called pollution haven hypothesis stating that due to freer international trade the comparative advantage may change the economic structure and consequently the trade patterns of the countries linked by trade relationships could occur this would lead to the increase of the transfers of energy and carbon embodied in traded commodities from developing countries and transition economies toward kyoto or eats constrained countries the aim of this paper is to verify if for italy as a kyoto and eats complying country evidence of a change in the trade patterns occurred on the basis of the pollution haven hypothesis does exist and to estimate the magnitude of the under estimation of the carbon actually emitted the carbon leakage the input output model has been used to calculate the intensities of energy consumption and the related green house gases emission for each italian economic sector

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

does social security privatization produce efficiency gains while privatizing social security can improve labor supply incentives it can also reduce risk sharing we analyze a 50 privatization using an overlapping generations model where heterogeneous agents with elastic labor supply face idiosyncratic earnings shocks and longevity uncertainty when wage shocks are insurable privatization produces about 18 100 of extra resources for each future household after all transitional losses have been compensated for with lump sum taxes when wages are not insurable privatization reduces efficiency by about 2 400 per future household we check the robustness of these results to different model specifications as well as policy reforms and arrive at several surprising conclusions first privatization performs better in a closed economy where interest rates decline with capital accumulation than in an open economy second privatization also performs better when an actuarially fair private annuity market does not exist third government matching of private contributions on a progressive basis is not very effective at restoring efficiency and can actually cause harm

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

food scare crises and developing countries the impact of avian influenza on vertical price transmission in the egyptian poultry sector abstract a bivariate smooth transition vector error correction model is applied to monthly poultry price data to analyze the effects that avian influenza has had on price transmission along the egyptian poultry marketing chain in order to reflect consumer awareness of the crisis an avian influenza food scare information index is developed and used within the model as a transition variable our results suggest that price adjustments to deviations from the market equilibrium parity depend on the magnitude of the avian influenza crisis further these adjustments are found to have very different implications for market equilibrium during the crisis retailers use their market power to increase marketing margins in contrast wholesaler margins are found to decline results also suggest that food safety information indices contribute to understanding the economic effects of food scare crises in developing countries

econometric models of asymmetric price transmission abstract in this paper we review the existing empirical literature on price asymmetries in commodities providing a way to classify and compare different studies that are highly heterogeneous in terms of econometric models type of asymmetries and empirical findings relative to the previous literature this paper is novel in several respects first it presents a detailed and updated survey of the existing empirical contributions on price asymmetries in the transmission mechanism linking input prices to output prices second this paper presents an extension of the traditional distinction between long run and short run asymmetries to new categories of asymmetries such as contemporaneous impact distributed lag effect cumulated impact reaction time equilibrium and momentum equilibrium adjustment path regime effect regime equilibrium adjustment path each empirical study is then critically discussed in the light of this new classification of asymmetries third this paper evaluates the relative merits of the most popular econometric models for price asymmetries namely autoregressive distributed lags partial adjustments error correction models regime switching and vector autoregressive models finally we use the meta regression analysis to investigate whether the results of asymmetry tests are not model invariant and find which additional factors systematically influence the rejection of the null hypothesis of symmetric price adjustment the main results of our survey can be summarized as follows i each econometric model is specialized to capture a subset of asymmetries ii each asymmetry is better investigated by a subset of econometric models iii the general significance of the f test for asymmetric price transmission depends mainly on characteristics of the data dynamic specification of the econometric model and market characteristics overall our empirical findings confirm that asymmetry in all its forms is very likely to occur in a wide range of markets and econometric models

unprivatizing the pension system the case of poland in many countries the fiscal tension associated with the global financial crisis brings about the discussion about unprivatizing the social security system this article employs an overlapping generations model to assess ex ante the effects of such changes to the pension reform in poland from 1999 as implemented in 2011 and in 2013 we simulate the behaviour of the economy without the implemented proposed changes and compare it to a status quo defined by the reform from 1999 we find that the changes implemented in 2011 and in 2013 are detrimental to welfare the effects on capital and output are small and depend on the selected fiscal closure implied effective replacement rates are lower these findings are robust to time inconsistency the shortsightedness of the governments imposes welfare costs

renewable energy consumption and economic growth evidence from a panel of oecd countries abstract this study examines the relationship between renewable energy consumption and economic growth for a panel of twenty oecd countries over the period 1985 2005 within a multivariate framework given the relatively short span of the time series data a panel cointegration and error correction model is employed to infer the causal relationship the heterogeneous panel cointegration test reveals a long run equilibrium relationship between real gdp renewable energy consumption real gross fixed capital formation and the labor force with the respective coefficients positive and statistically significant the granger causality results indicate bidirectional causality between renewable energy consumption and economic growth in both the short and long run

the impact of food scares on price adjustment in the uk beef market abstract this paper considers the impact of food scares predominately concerns relating to bse on uk beef prices at retail wholesale and producer levels over the 1990s acknowledging the co movement that exists between prices in the meat marketing chain we use a co integrating framework the results of which show the importance of publicity regarding the safety of food in the transmission of beef prices in the uk the food publicity index that we use has a marked negative impact on the prices at all levels a result that is consistent with the effect of an inward shift in the demand function moreover the extent of price decline varies between the marketing stages entailing that the price spreads rise in response to an increase in the negative publicity about food safety while not a formal test of market power these observations are consistent with recent theoretical results demonstrating that market power exacerbates price changes in the upstream sectors for a given change in the retail demand function the implication of these varying price changes is that the food safety concerns also cause the marketing margins between the stages to widen the uk s competition commission has recently investigated the abuse of market power in the food sector inspired largely by this specific issue

price transmission and market integration vertical and horizontal price linkages for salmon relationships between prices are of interest when testing for market integration as well as analyses of supply chains a feature that has received little attention is that if two supply chains are linked by market integration at some stage then the whole supply chain will be linked furthermore the leading price in such a system can be in one supply chain and will not be revealed in market integration studies or analysis of a single supply chain an empirical analysis is provided for the supply chains for salmon which originates in norway and the united kingdom and is then sold at retail level in france as smoked salmon we find a high degree of price transmission in both supply chains as well as integrated markets

market integration and spatial price transmission in grain markets of turkey this paper examines whether the grain market of turkey is cointegrated with the world grain market using an error correction model we analyse the response of producer prices of wheat barley mai

modelling price transmission and volatility spillover in the slovenian wheat market abstractinterdependence between first and second moments of producer and consumer wheat prices in slovenia is assessed in light of the recent major historical events that the country has undergone as well as the recent rumours of cartel agreements between millers causing a decline in farm gate prices while leaving consumer prices untouched a threshold vector error correction and multivariate generalized autoregressive conditional heteroscedasticity model with exogenous variables is applied results indicate that price level adjustments mainly favour retailers by increasing their marketing margins important second moment interactions are also identified increases in international wheat stocks reduce producer prices while higher interest rates increase their instability

disentangling nonlinearities in the long and short run price relationships an application to the us hog pork supply chain increased concentration at the retail food processing and farm input manufacturing levels has brought increased attention to patterns in retail to farm price spreads most studies documenting asymmetric price transmission focus on nonlinear error correction processes as opposed to the current study which analyses potential nonlinearities in the long run relationship between the farm and retail prices the null hypothesis of nonlinearity in the long run relationship between farm and retail prices in the us hog pork supply chain is rejected in favour of a smooth transition cointegration stc framework the stc framework predicts downward price stickiness in retail prices the predicted residuals of the nonlinear model are used to investigate whether it is possible to disentangle nonlinearity in the long run price relationship from nonlinearity in the adjustment towards the long run equilibrium the results underline the importance of testing for linearity in the long run price relationship before modelli

energy income causality in oecd countries revisited the key role of capital stock abstract this paper applies a recent advance in panel analysis to estimate the panel cointegration and panel vector error correction models for a set of 22 oecd countries using annual data covering the period 1960 2001 we investigate the relationship between energy consumption and income using an aggregate production function and controlling for the capital stock as well as by exploring the dynamic directions of the causality among these three variables we firstly obtain solid and convincing evidence of a fairly strong long run equilibrium relationship among them secondly it is found that the capital stock is much more productive than energy consumption third it is observed that neglecting the impact of the capital stock on income tends to overestimate the effect of energy consumption finally the panel causality test shows bi directional causal linkages exist among energy consumption the capital stock and economic growth overall the findings reveal that the capital stock plays a critical role in realizing the dynamic relationship between energy and income

price transmission and asymmetric adjustment in the spanish dairy sector asymmetric threshold vector error correction models are applied to monthly price data to analyse price relationships and patterns of transmission among farm and retail markets for a variety of dairy products in spain the results suggest that asymmetries affect a conspicuous part of the raw milk processed in spain implications for the organizational structure of spanish dairy markets are offered

rice market integration and food security in nepal the role of cross border trade with india coarse rice market integration between nepal and india is analyzed applying a threshold autoregressive model the price response behaviour of traders is found to be consistent with an asymmetric price adjustment mechanism indicating coarse rice prices in nepal respond to shocks originating in india the results show that adjustments to negative price deviations from long run stable equilibrium are faster than adjustments to the positive ones given a null threshold given that trade flows mainly from india to nepal nepali traders would adjust their prices upward to align with the long run equilibrium value relatively more quickly in the case of negative price deviations than if the price deviations were positive such a high speed of adjustment to negative price deviations could be detrimental to net food buyers food security status in the absence of a price stabilization mechanism however a price stabilization policy in nepal a food deficit and import dependent country would hardly have any effect on prices unless further effort is made to build up the level of national food reserves for short term food security interventions in the current context of structurally low levels of national food reserves an alternative short term policy such as foreign aid in the form of food or income transfers targeting the most vulnerable households to price increases is necessary through social safety net programmes in the long run an improvement of transportation infrastructure between market hubs other than the biratnagar trade basin in the terai nepal and india would contribute to the reduction of transaction costs and create incentives for more competition in formal cross border trade with india in times of negative shocks such as the high food price crisis in 2008 restrictive food trade policies in india will continue to undermine household food security in nepal

pooled mean group estimation of an environmental kuznets curve for co2 abstract we apply the pooled mean group estimator to test for the existence of an environmental kuznets curve for co2 in 22 oecd countries this approach allows for more flexible assumptions in a panel data framework the period goes from 1975 to 1998

renewable energy carbon emission and economic growth a revised environmental kuznets curve perspective abstract renewable energy plays an important role in reducing global carbon co2 emission this paper builds a rer renewable energy consumption rate index to represent the energy structure of a country and proposes a u shaped rkc renewable energy kuznets curve hypothesis between rer and economic growth we also examine the dynamic relationship between rer and the environmental kuznets curve ekc hypothesis using two panel data sets of 17 major developing and developed countries as well as six geo economic regions of the world during 1990 2014 panel co integration tests indicate that a long run relationship exists among economic growth rer and carbon emission we employ the fully modified ordinary least squares fmols and the dynamic ordinary least squares dols techniques to estimate the co integration coefficients of the panels and individual countries regions respectively the results verify both the ekc and rkc hypotheses indicating that a 10 rise in rer would to a 1 6 carbon emission reduction it is also found that the rkc turning points of individual countries and the entire samples in general take place before the turning points of the respective ekcs it suggests that promoting renewable energy consumption to make rkc cross its turning point earlier can accelerate ekc to reach its turning point more quickly this finding has important policy implications with respect to the development and utilization of renewable energy and environmental protection

former soviet union oil production and gdp decline granger causality and the multi cycle hubbert curve abstract this paper discusses the transition of the former soviet union fsu within the context of a 1987 1996 soviet and fsu oil production decline the conventional explanation of the break up is that economic inefficiencies and the cold war defense build up caused it another possible explanation one that is examined at length here is that declining oil production was a contributing factor the econometric analysis suggests that the fall in soviet and former soviet gdp in the 1980s and 1990s did not granger cause the decline in oil production but the decline in oil production did granger cause the fall in gdp coal and natural gas to gdp relationships show alternative granger causalities that we would expect to see with oil but do not a multi cycle hubbert trend that may be used to forecast future fsu oil production is also shown

spatial market integration in the presence of threshold effects a large body of research has evaluated price linkages in spatially separate markets much recent research has applied models appropriate for nonstationary data such analyses have been criticized for their ignorance of transactions costs which may inhibit price adjustments and thus affect tests of integration this analysis utilizes threshold autoregression and cointegration models to account for a neutral band representing transactions costs we evaluate daily price linkages among four corn and four soybean markets in north carolina nonlinear impulse response functions are used to investigate dynamic patterns of adjustments to shocks our results confirm the presence of thresholds and indicate strong support for market integration though adjustments following shocks may take many days to be complete in every case the threshold models suggest much faster adjustments in response to deviations from equilibrium than is the case when threshold behavior is ignored a large amount of empirical research has evaluated the extent to which spatially separate markets are integrated though the term is used loosely in the literature tests of market integration usually consider the extent to which shocks are transmitted among spatially separate markets the integration of markets can have important implications for price discovery and the operation of the market since persistent deviations from integration may imply riskless profit opportunities for spatial traders

the relationship between disaggregate energy consumption and industrial production in the united states an ardl approach abstract we re examine the relationship between disaggregate energy consumption and industrial output as well as employment in the united states using the autoregressive distributed lag ardl approach developed by pesaran and pesaran pesaran m h pesaran b 1997 working with microfit 4 0 camfit data ltd cambridge and pesaran shin and smith pesaran m h shin y smith r j 2001 bounds testing approaches to the analysis of level relationships journal of applied econometrics 16 289 326 in particular we focus attention on the following energy consumption variables coal fossil fuels conventional hydroelectric power solar energy wind energy natural gas wood and waste the sample period covers 2001 1 2005 6 our results imply that real output and employment are long run forcing variables for nearly all measures of disaggregate energy consumption

renewable energy consumption and growth in eurasia this study examines the causal relationship between renewable energy consumption and economic growth for 13 countries within eurasia over the period 1992 2007 within a multivariate panel data framework the heterogeneous panel cointegration test reveals a long run equilibrium relationship exists between real gdp renewable energy consumption real gross fixed capital formation and labor force the results from the error correction models indicate bidirectional causality between renewable energy consumption and economic growth in both the short run and long run thus the empirical findings lend support for the feedback hypothesis of the interdependent relationship between renewable energy consumption and economic growth

co2 emissions energy consumption and output in france abstract this paper examines the dynamic causal relationships between pollutant emissions energy consumption and output for france using cointegration and vector error correction modelling techniques we argue that these variables are strongly inter related and therefore their relationship must be examined using an integrated framework the results provide evidence for the existence of a fairly robust long run relationship between these variables for the period 1960 2000 the causality results support the argument that economic growth exerts a causal influence on growth of energy use and growth of pollution in the long run the results also point to a uni directional causality running from growth of energy use to output growth in the short run

energy consumption and economic growth evidence from china at both aggregated and disaggregated levels using a neo classical aggregate production model where capital labor and energy are treated as separate inputs this paper tests for the existence and direction of causality between output growth and energy use in china at both aggregated total energy and disaggregated levels as coal oil and electricity consumption using the johansen cointegration technique the empirical findings indicate that there exists long run cointegration among output labor capital and energy use in china at both aggregated and all three disaggregated levels then using a vec specification the short run dynamics of the interested variables are tested indicating that there exists granger causality running from electricity and oil consumption to gdp but does not exist granger causality running from coal and total energy consumption to gdp on the other hand short run granger causality exists from gdp to total energy coal and oil consumption but does not exist from gdp to electricity consumption we thus propose policy suggestions to solve the energy and sustainable development dilemma in china as enhancing energy supply security and guaranteeing energy supply especially in the short run to provide adequate electric power supply and set up national strategic oil reserve enhancing energy efficiency to save energy diversifying energy sources energetically exploiting renewable energy and drawing out corresponding policies and measures and finally in the long run transforming development pattern and cut reliance on resource and energy dependent industries

asymmetric farm retail price transmission and market power a new test a finite mixture model is used to estimate farm retail price transmission in the us fresh strawberry market results suggest two distinct pricing regimes associated with off and peak harvesting seasons the market power parameter is significant in the peak harvest regime but not in the off peak regime moreover price changes are transmitted completely throughout the marketing channel in the off peak regime when the market power parameter is zero but not in the peak harvest regime when the market power parameter is positive this suggests that produce buyers are more apt to exercise market power when farm supplies are abundant than when they are scarce and that the exercise of such power causes the farm retail price linkage to become asymmetric

retail price responses to changes in wholesale prices in the us beef industry differences among quality grades and primal cuts abstractthis study examines the transmission of wholesale prices to retail prices for differentiated beef products specifically we study vertical price movement for products differentiated by quality grades and primal cuts in the us beef industry our study considers two quality grades united states department of agriculture usda choice and usda select and three primal cuts chuck round and sirloin using threshold based autoregressive and error correction models and non linear impulse response functions we explore if characteristics of price adjustment differ by quality attributes of the products results show that there exists the rocket and feather effect in the adjustment of retail prices of most beef grades and cuts in response to changes in wholesale prices and such asymmetric adjustment effect is more pronounced for higher quality grade choice than lower quality grade select evidence of similar price adjustment is found from the high quality cut sirloin our results underscore th

price transmission asymmetric adjustment and threshold effects in the cotton supply chain a case study for vidarbha india this study examines price transmission asymmetries in vidarbha s india cotton supply chain from 2002 to 2012 the analysis takes account of thresholds in price adjustments toward their long run equilibrium the first stage considers the price dynamics between international and indian domestic cotton prices the second stage considers price transmission from domestic to farm gate cotton prices in vidarbha results from the first stage indicate that indian and international cotton markets are well integrated in contrast the second stage reveals significant threshold type nonlinearities as well as asymmetries in price transmission between domestic and farm gate prices the short run dynamics suggest that the pass through from domestic to farm gate prices is larger when domestic prices decrease than when they increase moreover back of the envelope calculations suggest that the loss in revenue for a typical farmer from a decrease in domestic price is larger than the gains from an increase in domestic price of the same magnitude the implication is that traders benefit from price fluctuations at the expense of farmers evidence from fieldwork in vidarbha suggest that asymmetries revealed in this analysis may be linked to trader s market power and inadequate market information among farmers