oil prices breaks and trends abstract this paper contributes to the literature of the stationarity of financial time series and the literature on oil and macroeconomics in several ways first it uses kejriwal and perron 2010 sequential procedure to endogenously determine multiple structural changes in real oil prices without facing the circular testing problem between structural changes and stationary assumptions of previous tests second it performs a diagnostic check to detect the significance and magnitude of the potential breaks third it uses the above information to test for the existence of stochastic trends in real oil prices and fourth it speculates about possible explanations for the break dates found in order to encourage further work and discussions the exercise uses monthly data from january 1861 to august 2011

nonrenewable resource scarcity nonrenewable resource theory often is summarized by hotelling s rule this paper reviews theoretical extensions and empirical investigations of resource extraction models observed data are often inconsistent with the hotelling rule suggesting that other characteristics of nonrenewable resource supply including exploration heterogeneous ore quality technological progress and capital investment are important determinants of the dynamic behavior of resource prices given the persistent recurrence of concern about nonrenewable resource scarcity measures of nonrenewable resource scarcity and the empirical evidence for the time trends of those measures are reviewed finally the implications of nonrenewable resource scarcity for economic growth are examined

turning lights into flights estimating direct and indirect rebound effects for uk households energy efficiency improvements by households lead to rebound effects that offset the potential energy and emissions savings direct rebound effects result from increased demand for cheaper energy services while indirect rebound effects result from increased demand for other goods and services that also require energy to provide research to date has focused upon the former but both are important for climate change this study estimates the combined direct and indirect rebound effects from seven measures that improve the energy efficiency of uk dwellings the methodology is based upon estimates of the income elasticity and greenhouse gas ghg intensity of 16 categories of household goods and services and allows for the embodied emissions of the energy efficiency measures themselves as well as the capital cost of the measures rebound effects are measured in ghg terms and relate to the adoption of these measures by an average uk household the study finds that the rebound effects from these measures are typically in the range 5 15 and arise mostly from indirect effects this is largely because expenditure on gas and electricity is more ghg intensive than expenditure on other goods and services however the anticipated shift towards a low carbon electricity system in the uk may lead to much larger rebound effects

defining the rebound effect abstract this paper gives rigorous definitions of the rebound effect not only in the well described single commodity case khazzoom 1980 the energy journal 1 4 21 40 but also for a multiple commodity case it is shown that the familiar laws for the single case do not hold for the multiple case the paper describes the state of the art of empirical estimation of the rebound effect with special focus on the estimates done for the netherlands we conclude that according to every definition empirical evidence shows that the re is probably small between 0 and 15

natural resource prices will they ever turn up abstract natural resource theory predicts that natural resource rents should increase over time however technical progress in resource extraction environmental constraints or great natural abundance could result in stagnant or declining product prices thus there is no theoretical reason to believe that product prices will rise in the near future the prediction of product prices by time series methods is shown to depend critically upon whether the series are modeled as difference or trend stationary dickey fuller and lagrange multiplier tests are used to show that the series are difference stationary long and short sample series are tested trend stationary modeling strongly predicts rising resource prices the result from difference stationary modeling is that there is only a weak supposition that natural resource prices will rise

measuring inflation expectations a survey data approach expectations of inflation can be important determinants of actual inflation because they influence the process of wage bargaining price setting speculative buying and financial investing decisions englander and stone 1989 a central bank given its primary objective of price stability therefore takes a natural interest in inflationary expectations of economic agents in fact as illustrated by the theoretical work of e g kydland and prescott 1977 and barro and gordon 1983 inflationary expectations of the public are an important factor determining the success of the central bank in achieving its policy goal measures of inflation expectations can be used for monetary policy purposes for example as information variables in the sense defiined by friedman 1993 or as intermediate targets in the so called direct inflation targeting strategy svensson 1996 fuhrer 1997

an empirical study on the rebound effect considering capital costs technological progress is one of the means of reducing energy usage and carbon dioxide co2 emissions however this reduction in turn leads to a reduction in the real cost of energy services per unit which results in an increase in the demand for energy services therefore a reduction in the anticipated co2 emissions caused by a technological improvement might be partially offset in response to the cost reduction previous studies have referred to this effect as the rebound effect a large amount of empirical evidence on the rebound effect exists however most of these studies assume an exogenous improvement in energy efficiency and thus capital costs that may decrease the magnitude of the rebound effect are not taken into account expressly this paper extends the scope of the research conducted by brannlund et al brannlund r ghalwash t nordstrom j 2007 increased energy efficiency and the rebound effect effects on consumption and emissions energy economics 29 1 17 in terms of two aspects i considering capital costs explicitly as additional capital costs and ii adapting an iterating procedure and estimating the rebound effect using japanese household data as a result of our empirical analysis we conclude that the rebound is approximately 27 however we also find that ignoring additional capital costs leads to an increase in the rebound effect in the case of japanese households the magnitude of the rebound effect increases to approximately 115 moreover our simulation study shows that only a one time iteration of brannlund et al brannlund r ghalwash t nordstrom j 2007 increased energy efficiency and the rebound effect effects on consumption and emissions energy economics 29 1 17 may lead to a biased result

testing for nonlinear dependence in daily foreign exchange rates the purpose of this article is to investigate whether daily changes in five major foreign exchange rates contain any nonlinearities although the data contain no linear correlation evidence indicates the presence of substantial nonlinearity in a multiplicative rather than additive form further examination reveals that a generalized autoregressive conditional heteroskedasticity model can explain a large part of the nonlinearities for all five exchange rates copyright 1989 by the university of chicago

evidence of direct and indirect rebound effect in households in eu 27 countries abstract this research estimates the direct and indirect rebound effect of energy efficiency in households for the eu 27 countries the first twenty seven member states of the european union a hybrid methodology that combines econometric estimates environmental extended input output analysis and re spending models has been developed although most of the economies present values below 100 there are seven countries situated above this critical threshold by weighting individual estimates by gdp an average value for the overall eu 27 economy has been found between 73 62 and 81 16 these results suggest that the energy policy at the european level should be rethought if efficiency measures pursue reducing energy consumption and tackling climate change

exploring the effect of producer services agglomeration on china s energy efficiency under environmental constraints abstract this paper makes an empirical analysis of the effect of producer services agglomeration on china s energy efficiency under environmental constraints eee by using spatial durbin model the results show that at the national level the urbanization agglomeration of producer services not only improves the local eee significantly but also has an obvious spatial spillover effect on the surrounding regions while the localization agglomeration of producer services is only beneficial to the improvement of the local eee from the regional perspective both the urbanization and localization agglomeration of producer services show significant promotion effect and spatial spillover effect on china s eee in the east region and the promotion effect of the urbanization agglomeration of producer services is greater while the improvement of eee in the central and west regions mainly depend on the mar externality of producer services agglomeration and its spatial spillover effects are not obvious moreover the above empirical results exhibit strong robustness based on these empirical findings this paper puts forward some specific suggestions for improving china s eee so as to achieve the multi win of economic growth energy conservation and environmental protection the study contributes to improving the environmental quality and speeding up the construction of beautiful china

energy conservation more effective with rebound policy this article sketches the problem of indirect energy use effects also known as rebound of energy conservation there is widespread support for energy conservation especially when it is voluntary as this seems a cheap way to realize environmental and energy climate goals however this overlooks the phenomenon of rebound the topic of energy rebound has mainly attracted attention from energy analysts but has been surprisingly neglected in environmental economics even though economists generally are concerned with indirect or economy wide impacts of technical change and policies this paper presents definitions and interpretations of energy and environmental rebound as well as four fundamental reasons for the existence of the rebound phenomenon it further offers the most complete list of rebound pathways or mechanisms available in the literature in addition it discusses empirical estimates of rebound and addresses the implications of uncertainties and difficulties in assessing rebound suggestions are offered for strategies and public policies to contain rebound it is advised that rebound evaluation is an essential part of environmental policy and project assessments as opposed to earlier studies this paper stresses the relevance of the distinction between energy conservation resulting from autonomous demand changes and from efficiency improvements in technology equipment in addition it argues that rebound is especially relevant for developing countries

evaluating the predictability of exchange rates using long horizon regressions mind your p s and q s since the breakdown of the bretton woods agreement researchers have used a wide variety of structural models to try to predict exchange rate movements unfortunately finding consistent evidence that these models outperform a random walk has proven elusive in this paper we investigate the impact different methods of inference may have had on these conclusions using p values based on recently developed tests of forecast accuracy and encompassing as well as q values designed to mitigate multiple testing problems we provide stronger evidence consistent with these models having superior predictive ability our results suggest that previous studies inability to detect predictive ability may have been influenced by the statistics used and the manner in which they were employed

target zones and exchange rate dynamics this paper develops a simple model of exchange rate behavior under a target zone regime it shows that the expectation that monetary policy will be adjusted to limit exchange rate variation affects exchange rate behavior even when the exchange rate lies inside the zone and is thus not being defended actively somewhat surprisingly the analysis of target zones turns out to have a strong formal similarity to problems in option pricing and investment under uncertainty

interest rates and currency prices in a two country world abstract this paper is a theoretical study of the determination of prices interest rates and currency exchange rates set in an infinitely lived two country world which is subject both to stochastic endowment shocks and to monetary instability formulas are obtained for pricing all equity claims nominally denominated bonds and currencies and these formulas are related to earlier closely related results in the theories of money finance international trade

the value of fiscal discipline for oil exporting countries abstract the value of fiscal discipline is assessed by analyzing the role of fiscal policy as a transmission mechanism of oil price shocks in oil exporting small open economies fiscal policy is an important propagation channel taking policy as given by the data the model can successfully explain the responses of key macroeconomic variables but it is unable to explain these responses under counterfactual fiscal frameworks interestingly fiscal policy also seems capable of regulating the size of pass through furthermore fiscal policies that insulate the economy from oil price shocks seem to be welfare improving over procyclical ones

testing the monetary model of exchange rate determination new evidence from a century of data abstract we test the long run monetary model of exchange rate determination for a collection of 14 industrialized countries using data spanning the late nineteenth or early twentieth century to the late twentieth century interestingly we find support for a simple form of the long run monetary model in over half of the countries we consider for these countries we estimate vector error correction models to investigate the adjustment process to the long run monetary equilibrium in the spirit of meese and rogoff journal of international economics 14 1983 3 24 we also compare nominal exchange rate forecasts based on monetary fundamentals to those based on a naive random walk model

estimating direct and indirect rebound effects for u s households with input output analysis part 2 simulation abstract this is the second part of a two part paper that integrates economic and industrial ecology methods to estimate the indirect rebound effect from residential energy efficiency investments we apply the model developed in part one to simulate the indirect rebound given an estimate of the direct rebound using a 2002 environmentally extended input output model and the 2004 consumer expenditure survey in 2002 for the u s we find an indirect rebound of 5 15 in primary energy and co 2 e emissions assuming a 10 direct rebound depending on the fuel saved with efficiency and household income the indirect rebound can be as high as 30 40 in no x or so 2 emissions for efficiency in natural gas services the substitution effect modeled in part one is small in most cases and we discuss appropriate applications for proportional or income elasticity spending assumptions large indirect rebound effects occur as the u s electric grid becomes less carbon intensive in households with large transportation demands or as energy prices increase even in extreme cases there is limited evidence for backfire or a rebound effect greater than 100 enacting pollution taxes or auctioned permits that internalize the externalities of energy use would ensure that rebound effects unambiguously increase consumers welfare

estimating direct and indirect rebound effects for u s households with input output analysis part 1 theoretical framework abstract this is the first part of a two part paper providing an analytical model of the indirect rebound effect given a direct rebound estimate that integrates consumer demand theory with the embodied energy of household spending from environmentally extended input output analysis the second part applies the model developed in part one to simulate the direct and indirect rebound for the average u s household in terms of primary energy co2e nox and so2 emissions and for energy efficiency investments in electricity natural gas or gasoline services part one provides a critical review of the largely independent economic and industrial ecology literatures on the indirect rebound by studying the two goods case and the n goods case we demonstrate that the indirect rebound is bounded by the consumer budget constraint and inversely related to the direct rebound we also compare the common proportional spending and income elasticity spending assumptions with our model of cross price elasticities including both substitution and income effects for the indirect rebound by assuming zero incremental capital costs and the same embodied energy as conventional technologies for efficient appliances we model an upper bound of the indirect rebound future work should also consider the increase in consumer welfare possible through the rebound effect

natural resource economics under the rule of hotelling abstract natural resource stocks held in situ are physical assets equilibrium in the assets market requires that their rates of return be such that their owners are just willing to hold on to them rather than invest elsewhere i discuss a number of factors relating to the evolution of extraction costs to the durability of the resource to market structure and to uncertainty that are important in correctly characterizing the rate of return on holding exhaustible natural resource stocks the emphasis is put on how those factors can potentially help bridge the gap between the basic hotelling s rule of natural resource exploitation and the historical behaviour of the flow price of a number of resources i also highlight some theoretical and empirical issues that need further attention

what if consumers decided to all go green environmental rebound effects from consumption decisions shifting consumer preferences towards green consumption is promoted by many governments and environmental groups rebound effects which reduce the effectiveness of such actions are estimated for cost saving green consumption choices using australian data cases examined are reduced vehicle use reduced electricity use changing to smaller passenger vehicles and utilising fluorescent lighting it is found that if rebound effects are ignored when evaluating green consumption environmental benefits will be overstated by around 20 for reduced vehicle use and 7 for reduced electricity use rebound effects are higher and environmental benefits lower when more efficient vehicles or lighting are utilised rather than simple conservation actions of forgoing use in addition lower income households have higher rebound effects suggesting that environmental policy directed at changing consumer behaviour is most effective when targeted at high income households an inherent trade off between economic and environmental benefits of green consumption choices is demonstrated the size of the rebound effect and the observed variation with household income is attributed to life cycle analysis lca methodologies associated with the calculation of embodied ghg emissions of consumption goods these results should be therefore be interpreted as the minimum rebound effect to include in policy evaluation

long memory in foreign exchange rates using the geweke porter hudak test we find evidence of long memory in exchange rate data this implies that the empirical evidence of unit roots in exchange rates may not be robust to long memory alternatives fractionally integrated autoregressive moving average arfima models are estimated by both the time domain exact maximum likelihood ml method and the frequency domain approximate ml method impulse response functions and forecasts based on these estimated arfima models are evaluated to gain insight into the long memory characteristics of exchange rates some tentative explanations of the long memory found in the exchange rates are discussed

are our feers justified the fundamental equilibrium exchange rate feer method of calculating an equilibrium real exchange rate is the most widely used alternative to ppp this paper presents the first comprehensive historical test of feer calculations for six major economies using estimates for the last 20 years we focus on unit root and cointegration techniques both at the individual country level and jointly using panel based estimation specifically we test whether real exchange rates cointegrate with time series for the feer even at an individual country level the results provide support for the feer particularly in canada the uk and germany panel unit root tests suggest that the real exchange rate and feer cointegrate overall the results suggest that the feer approach represents an improvement over ppp in explaining medium to long term trends in the real exchange rates of the major industrialised countries

the failure of the monetary model of exchange rate determination in this paper we test three popular versions of the monetary model flexible price forward looking and real interest differential models for the oecd member countries by applying johansen cointegration technique based on country by country analysis we conclude that monetary models do not provide the expected results we reveal several shortcomings of the models and examine the building blocks of the fundamental version although researchers always blame the deviations from purchasing power parity as the reason for the failure of the monetary model our analysis indicates that invalidity of keynesian money demand function is also responsible for unfavourable results

an identification robust test for time varying parameters in the dynamics of energy prices summary we test for the presence of time varying parameters tvp in the long run dynamics of energy prices for oil natural gas and coal within a standard class of mean reverting models we also propose residual based diagnostic tests and examine out of sample forecasts in sample lr tests support the tvp model for coal and gas but not for oil though companion diagnostics suggest that the model is too restrictive to conclusively fit the data out of sample analysis suggests a random walk specification for oil price and tvp models for both real time forecasting in the case of gas and long run forecasting in the case of coal copyright 2010 john wiley sons ltd

integration cointegration and the forecast consistency of structural exchange rate models abstract we propose an alternative set of criteria for evaluating forecast rationality the forecast and the actual series 1 have the same order of integration 2 are cointegrated and 3 have a cointegrating vector consistent with long run unitary elasticity of expectations we denote forecasts that meet these criteria as consistent forecasts generated from monetary models generally pass 1 however using the johansen procedure cointegration fails to hold the longer the horizon of the cointegrated pairs 3 is not generally rejected using the horvath watson procedure imposing the unitary coefficient restriction we find fewer instances of consistency although a higher proportion of the cases of consistency are found at the longer horizons

currency fluctuations in the post bretton woods era the international monetary landscape that has emerged since the felling of bretton woods is characterized by a hybrid exchange rate system that lies somewhere between the textbook polar cases of a gold standard and a pure float this system has relatively flexible exchange rates between major countries active central bank intervention in the market for the major currencies and predominantly fixed exchange rates relative to the dollar or to some basket of currencies for less developed countries and newly industrializing nations the majority of research on currency markets since the early 1970s has focused on the characteristics of flexible exchange rates under this hybrid regime my thesis is that this research has been unsuccessful the proportion of monthly or quarterly exchange rate changes that current models can explain is essentially zero even after the fact forecasts that use actual values instead of forecasted values of the explanatory variables cannot explain major currency movements over the post bretton woods era this result is quite surprising since exchange rate changes would be entirely unpredictable only in very special cases of the theoretical models discussed as the discussion below will argue it is not a general implication of market efficiency that exchange rates follow a random walk process 1

exhaustible resources and secondary materials a macroeconomic analysis abstract in this paper we have developed an endogenous growth model to deal with exhaustible resources and secondary materials together under the assumptions that these two inputs are or are not technologically perfect substitutes of each other in order to compare the results obtained under both hypotheses we highlight the implication of these two assumptions on the rate of growth of total output and upon the flow of exhaustible resources extracted there are also some other interesting findings related to the spill over on welfare of the waste recycling process and the dynamics of shadow prices of both inputs considered finally some implications on hotelling s rule also emerge in our analytical framework

exploring the rebound effect from the perspective of household an analysis of china s provincial level abstract the existence of the energy rebound effect may partially even totally offset the expected energy savings in order to explore the status of the household rebound effect in china we manually compiled the provincial energy input output table of china then combining econometric methods input output analysis and the re spending model we conduct a detailed analysis of both the direct and indirect energy rebound effect from the household perspective in china under a unified research framework the results show there are significant differences in risk vulnerability regarding energy rebound effect among different regions qinghai is the most vulnerable province as 69 23 of its economic sectors could lead to a backfire effect two economic sectors have the potential to cause a backfire effect in thirteen provinces in addition the chinese government and its provincial government should take full account of the regional differences when formulating energy policies to alleviate the pressure on energy conservation and carbon emission reduction

untested hypotheses in non renewable resource economics the present paper reviews the literature on the empirical implications of the hotelling rule and suggests directions for further research in this area

time varying parameters and the out of sample forecasting performance of structural exchange rate models varying parameter estimation techniques based on recursive application of the kalman filter are used to improve the predictive performance of a class of monetary exchange rate models i find that allowing estimated parameters to vary over time enhances the models forecasting performance for the dollar pound dollar mark and dollar yen exchange rates contrary to earlier results in the literature ex post forecasts for the dollar mark rate compare favorably with those obtained from the naive random walk forecasting rule

steady state growth in a hotelling model of resource extraction this paper re examines the hotelling model of optimal nonrenewable resource extraction in light of stock effects and technological progress we assume functional forms for cost and demand so that the solution to the hotelling problem is a steady state consistent with the empirical observation that the growth rates of market prices have remained zero over a long period of time we use data on 14 minerals from 1970 to 2004 to estimate the supply and demand functions using sur and 3sls and to test the model we validate the model for 8 of 14 minerals c 2007 elsevier inc all rights reserved

energy consumption for space heating a discrete continuous approach energy demand for space heating is estimated using a discrete continuous choice model which focuses on the relationship between the choice of heating equipment and energy consumption the model is estimated on norwegian micro data and the two stages of the model are estimated simultaneously the capital cost and the operating cost of the heating systems are both found to have a significant impact on the choice of heating system furthermore the results show that household characteristics are important variables in residential energy models energy price elasticities and income elasticities are also estimated

on the consistency of short run and long run exchange rate expectations abstract this paper examines whether short term exchange rate expectations overreact by comparing them with long term expectations we develop a set of nonlinear restrictions linking expectations at different forecast horizons the restrictions impose consistency a property weaker than rationality we use exchange rate survey data to measure expectations and then test whether consistency holds the data show that a current positive exchange rate shock leads investors to expect a higher long run future spot rate when iterating forward their short term expectations than when thinking directly about the long run in this sense short horizon expectations may overreact to current exchange rate changes

breaks trends and unit roots in spot prices for crude oil and petroleum products abstract this study examines the trend properties in energy price series using weekly spot price data for crude oil heating oil and regular gasoline in particular the procedures proposed by perron and yabu 2009b are employed to test for a one time break in the trend function of each price series with no prior knowledge of whether the noise component is stationary or has an autoregressive unit root based on the results of the break estimate the unit root test developed by kim and perron 2009 is performed to examine the stationarity of the prices finally we extend the one break analysis to the case with multiple breaks by employing the break test proposed by kejriwal and perron 2010 and the unit root test of carrion i silvestre et al 2009 the results consistently demonstrate evidence of structural breaks and reject the unit root null hypothesis for all the price series suggesting that energy prices are persistently influenced by long term economic fundamentals instead of temporal policy changes

exchange rate predictability the main goal of this article is to provide an answer to the question does anything forecast exchange rates and if so which variables it is well known that exchange rate fluctuations are very difficult to predict using economic models and that a random walk forecasts exchange rates better than any economic model the meese and rogoff puzzle however the recent literature has identified a series of fundamentals methodologies that claim to have resolved the puzzle this article provides a critical review of the recent literature on exchange rate forecasting and illustrates the new methodologies and fundamentals that have been recently proposed in an up to date thorough empirical analysis overall our analysis of the literature and the data suggests that the answer to the question are exchange rates predictable is it depends on the choice of predictor forecast horizon sample period model and forecast evaluation method predictability is most apparent when one or more of the following hold the predictors are taylor rule or net foreign assets the model is linear and a small number of parameters are estimated the toughest benchmark is the random walk without drift

a fractional cointegration analysis of purchasing power parity a generalized notion of cointegration called fractional cointegration is introduced to examine the long run purchasing power parity ppp hypothesis by allowing deviations from equilibrium to follow a fractionally integrated process the fractional cointegration analysis can capture a wider range of mean reversion behavior than standard cointegration analyses this gain is flexibility in modeling subtle mean reverting dynamics is found to be important for a proper evaluation of long run ppp empirical results based on historical data for the 1914 1989 period show that ppp reversion exists and can be characterized by a fractionally integrated process in three out of five countries studied the results support ppp as a long run phenomenon though significant short run deviations from ppp can exist

resource characteristics extraction costs and optimal exploitation of mineral resources this paper modifies the traditional theories ofnon renewable resource exploitation where reserve sizeis assumed to be the major determinant of extractioncosts in a competitive model of resourceexploitation characteristics of aggregate reservesare considered as a determinant of extraction cost then dynamic solutions for the price and exploratoryefforts are developed various price paths arefeasible under different assumptions with regard tothe changes in the reserve characteristics over time past empirical research shows that there is noconsistent price path for all materials in fact itis the quality of newly discovered reserves as well astheir size that has affected material prices todemonstrate the complexity of a firm s decision torecover mineral from new deposits potentials forsubstantial high quality marine mineral resources areevaluated as a substitute for land based resources however several factors including the decreasingtrend in marine mining r d expenditures and thepotential impact of large scale marine mining on priceof minerals indicate that mining of mostnon hydrocarbon marine minerals will not take place inthe near future

expectation formation in the foreign exchange market a time varying heterogeneity approach using survey data using consensus economics survey data on jpy usd and gbp usd exchange rate expectations for the 3 and 12 month horizons over the period november 1989 december 2012 we first show that expectations fail the conventional tests of unbiasedness and do not exhibit a learning process towards rationality our approach is consistent with the economically rational expectations theory feige and pearce 1976 which states that information costs and agents aversion to misestimating future exchange rates determine the optimal amounts of information on which they base their expectations the time variability of the cost aversion ratios justifies at the aggregate level a representation of expectations as a linear combination of the traditional extrapolative adaptive and regressive processes augmented by a forward market component whose parameters are allowed to change over time this mixed expectation model with unstable heterogeneity is validated by our kalman filter estimation results for the two currencies and

error correction modelling and dynamic specifications as a conduit to outperforming the random walk in exchange rate forecasting the proposition that dynamic exchange rate models can outperform the random walk in out of sample forecasting in the sense that they produce lower mean square errors is examined and disputed by using several dynamic versions of three macroeconomic exchange rate models it is demonstrated that dynamic specifications outperform the corresponding static models but improvement in the forecasting power may not be sufficient for the dynamic models to perform better than the random walk the results are explained by suggesting that any dynamic specification or transformation of the static model leads to the introduction of a lagged dependent variable which in effect is a random walk component the analysis leads to the conclusion that it is implausible to aim at beating the random walk by augmenting a static model with a random walk component

on the rebound feedback between energy intensities and energy uses in iea countries abstract the interaction or feedback between energy efficiencies or energy intensities and energy use has long been the topic of debate some have argued that energy efficiency improvements by reducing energy intensities and therefore lowering the cost of energy services would lead to rebound effects offsetting much or all of any initial savings in energy in this paper we analyse historical data on energy use efficiency and pricing in different sectors to try and identify rebounds for the period of our data since about 1970 we show that key measures of activity car use manufacturing output and structure house area etc have changed little in response to changes in energy prices or efficiency instead continuing their long term evolution relative to gdp or other driving factors while our analysis cannot disentangle more macro level economic feedbacks in a detailed way we show indirectly that such effects also appear to have been small over the 1970s and 1980s overall our analysis of disaggregated sectoral and subsectoral energy use and activity trends in a variety of iea economies suggests that any feedback effect is small compared to both the effects on energy use of changes in energy intensities and overall economic growth we conclude that most of the improvements in energy efficiencies led to reductions in energy intensities observed in the 1970s and 1980s weighted by 1990 activity levels intensities were roughly 15 20 lower in 1994 5 than in 1973 which in turn meant real savings of energy energy demand in iea countries is roughly this much below what it would have been for the same gdp had these savings not occurred rebounds may have taken back some of the overall savings but most remain even after the fall of oil prices in 1986 any boost to gdp as a result of these savings could not have been sufficient to increase energy demand enough to significantly alter these conclusions that the savings remained after the fall in oil prices supports the notion that net savings restrained energy growth relative to gdp in some formulations arise from technological progress even if energy prices do not increase how far this effect can reach however is a matter of considerable debate

technological progress and sustainable development what about the rebound effect abstract sustainability concepts that rest on the idea of resource or energy efficiency improvements due to technological progress tend to overestimate the potential saving effects because they frequently ignore the behavioral responses evoked by technological improvements efficiency improvements also affect the demand for resources and energy and often an increase in efficiency by 1 will cause a reduction in resource use that is far below 1 or sometimes it can even cause an increase in resource use this phenomenon is commonly labeled the rebound effect which is well known among energy economists but never attracted much attention in ecological economics the paper starts with the traditional neoclassical analysis of the rebound effect in a partial equilibrium framework that concentrates on the demand of one particular energy service such as mobility or room temperature it also provides an overview of some of the main empirical studies based on this model that mostly confirm the existence of the rebound effect but are controversial about its actual importance however we have to go beyond the neoclassical single service model in order to take care of the variety of possible feedback affecting energy use the paper presents two important expansions of the single service model in order to show the potential relevance of the rebound effect to ecological economics first it is shown that in a multi services model it proves to be difficult to make general statements about the relevance of the rebound effect in this case the overall effect of an increase in energy efficiency on total energy use depends on the on the assumptions about the substitutability between the services considered and the direction of the income effect second the paper also tries to take care of the fact that changes in resource use or energy use are frequently just side effects of other forms of technological progress especially technological change of a time saving nature can have a large influence on energy use as many time saving devices for example faster modes of transport require an increase in energy consumption that is frequently reinforced by a rebound effect with respect to time this effect will be especially strong when wages are high and at the same time energy prices are low as is currently the case in most industrialized countries consequently the paper also provides a strong argument for the introduction of energy taxes

an econometrics view of worldwide fossil fuel consumption and the role of us crude oil coal and gas known as fossil fuels play a crucial role in the global economy this paper proposes new econometrics modelling to demonstrate the trend of fossil fuels consumption the main variables affecting consumption trends are world reserves the price of fossil fuels us production and us net imports all variables have been analysed individually for more than half a century the research found that while the consumption of fossil fuels worldwide has increased trends in the us production and net imports have been dependent on the type of fossil fuels most of the us coal and gas production has been for domestic use which is why it does not have a strong influence on worldwide fossil fuel prices moreover the reserves of fossil fuels have not shown any diminution during the last couple of decades and predictions that they were about to run out are not substantiated the nominal and real price of fossil fuels was found to change depending on the type finally estimates of three econometric models for the consumption of fossil fuels from 1949 to 2006 are presented which identify the effects of significant variables

durable goods and residential demand for energy and water evidence from a field trial this article describes a household production model in which energy efficient durable goods cost less to operate so households may use them more the model is estimated using household level data from a field trial in which participants received high efficiency clothes washers free of charge the estimation strategy exploits this quasi random replacement of washers to derive precise estimates of the household production technology and a demand function for clothes washing during the field trial households increased clothes washing on average by 5 6 after receiving a high efficiency washer implying a price elasticity of 06 the complete model is used to evaluate the cost effectiveness of recent changes in minimum efficiency standards for clothes washers

empirical evidence of direct rebound effect in catalonia this paper reviews the empirical literature concerning the direct rebound effect in households it briefly analyzes the main theoretical and methodological aspects and finally estimates the magnitude of direct rebound effect for all energy services using electricity in households of catalonia spain using econometric techniques the main results show an estimated direct rebound effect of 35 in the short term and 49 in the long term the existence of a rebound effect reduces the effectiveness of energy efficiency policies

the rebound effect an evolutionary perspective the rebound effect presents a major flaw in to energy conservation policies that aim to reduce energy consumption through energy efficiency development economics and energy related disciplines have thus far developed tools to measure such a phenomenon this paper attempts to explain this seeming paradox using a thermodynamic evolutionary theoretical framework in addition to the traditional economic approach we here propose that evolutionary systems such as biological or even economic systems may rearrange themselves in a more complex fashion under the pressure of an increasing flux of energy driven by the higher conversion rate of greater efficiency higher complexity due to a greater energy density rate counteracts the positive effects of energy efficiency we investigated this hypothesis in the context of the road freight transport system and the productive structure the qualitative analysis in this paper further substantiated by figures provides a link between the dynamics of production patterns and the effect of efficiency in the light of the macro economic effects of increased energy demand the analysis departs from a rigorous investigation of the actual energy efficiency evolution in the road freight transport system to develop through a survey of the subsequent worldwide economic revolution in the production system it is then shown how outsourcing the key feature of globalization can be identified as the main source of traffic density growth finally four paradigms are used to stress how the shift in the production system must be considered a leap in structural complexity that consequently serves to increase the frequency of components interactions

exchange rate theory and practice this volume grew out of a national bureau of economic research conference on exchange rates held in bellagio italy in 1982 in it the world s most respected international monetary economists discuss three significant new views on the economics of exchange rates rudiger dornbusch s overshooting model jacob frenkel s and michael mussa s asset market variants and pentti kouri s current account portfolio approach their papers test these views with evidence from empirical studies and analyze a number of exchange rate policies in use today including those of the european monetary system

fuel conserving and using production functions abstract this article compares eight production cost functions used or potentially useful for exploring how energy efficiency gains affect energy consumption we show the practitioner s choice of function can inadvertently pre determine results and make recommendations as to which functions are flexible enough to prevent this we also show pre selected factor substitution elasticities can similarly pre determine results to aid the comparison we decompose the energy consumption rebound effect into intensity and output income effects which also delivers insight into the mechanisms of rebound we conclude by recommending practitioners restrict themselves to either the gallant fourier or the generalized leontief symmetric generalized barnett cost functions as being sufficiently rebound flexible the translog cost function may be suitable given certain conditions and a particular form of the ces solow function is a possible but problematic candidate along the way the article provides a general methodology for similarly examining any arbitrarily defined constant returns to scale production or cost function

trends in world energy prices the correct identification of the time series path of non renewable energy resources has far reaching consequences for economists and policymakers alike this study builds on the existing literature by employing a data series that includes a sample period of institutional change and recently developed unit root testing procedures besides crude oil natural gas and coal prices are also examined aiming to further the knowledge of non renewable energy resource time paths in order to inform future research and update the conclusions of past studies the unit root tests allow for structural breaks and are based on the procedures developed by zivot and andrews 1992 lumsdaine and papell 1997 and lee and strazicich 2003 finally we investigate whether the trend changes signs in the regimes which are bounded by the structural breaks and quantify the prevalence of the trends over the sample period considered the results show that the trend is not well represented by a single positive or negative trend the variability of the trend suggests that forecasting energy prices should not typically occur about a single trend

energy requirements of households in brazil abstract in this study we determine the total direct plus indirect energy requirements of a given set of brazilian households we use a generalized input output model in order to calculate the energy embodied in goods and services purchased by households of different income level in 11 capital cities of brazil our results show that on average the total energy intensity of household expenditure increases with income level although there is a considerable spread in energy intensities within income classes as well as disparities between regions of the country the total yearly average energy requirement per household in brazil in 1995 96 was 173 6 gj 61 of which was indirect with 32 8 gj for the lower income level 66 of which was indirect and 602 2 gj for the higher income level 62 of which was indirect of this total average energy requirement 76 was required for only three consumption categories utilities 31 mobility 28 and shelter 17 this analysis calls for the attention that has to be given not only to the direct energy consumption as motor fuels and electricity for example but also to the consumption categories that encompass an important part of the indirect energy requirement of households in capital cities in brazil

economic structure and energy savings from energy efficiency in households when an energy efficiency improvement occurs at the household level several mechanisms grouped under the name of the rebound effect increase the available income and consumption increasing the total energy consumption of the economic structure the present research analyses the links between energy efficiency improvements in households consumption and the economic structure in an input output framework we examine from an empirical perspective the relationship between energy efficiency improvements and the economic structure and between the direct and the indirect rebound effect the limits of the input output methodology in assessing the direct and indirect rebound effect have been empirically tested with respect to efficiency improvements of electricity uses in households in catalonia

rationality of survey data and tests for market efficiency in the foreign exchange markets abstract this paper tests the rational expectations hypothesis reh and the market efficiency hypothesis meh in the foreign exchange markets using survey data on expectations our results show that the spot exchange rates expected exchange rates and the forward rates all follow a random walk process hence the cointegration theory is employed to test the reh and meh all the test statistics support the reh but fail to support the meh we use survey data on expectations to identify the causes behind this failure of the meh jel f31 g14

the influence of energy efficiency on other natural resources use an input output perspective abstract energy efficiency improvements reduce the costs of energy services and under some circumstances increase the available income this generates an additional increase of consumption of goods and services that need additional energy to be produced distributed and consumed this effect is known as the indirect rebound effect in the literature however beyond this additional increase of global energy consumption there is also a variation of the use of other natural resources due to the same mechanism this effect which we label as direct and indirect cross rebound effect is generally not considered by academia nor policy making when designing and implementing energy policies this research conceptualizes this effect develops a methodology for its estimation and provides estimates for the spanish economy results show that an energy efficiency in households could increase the use of minerals and water while reducing the use of energy fossil fuels and metal ores in spain these reductions however are lower than the expected ones from an input output perspective leading to positive direct and indirect cross rebound effects between 64 6 and 74 7 for energy equivalent to direct and indirect rebound effect 48 63 for fossil fuels 84 89 for metal ores backfire for non metallic minerals 147 134 and extreme backfire for water 1191 1628

persistence and cycles in historical oil price data abstract this paper deals with the analysis of two observed features in historical oil price data in particular persistence and cyclicity using monthly data from september 1859 to october 2013 we observe that the series presents two peaks in the spectrum one occurring at the long run or zero frequency and the other at a cyclical frequency these features can be well described in terms of a long memory model that incorporates both peaks in the spectrum it is found that the order of integration at the zero frequency is about 0 6 and the one at the cyclical frequency is substantially smaller of about 0 3 with the length of the cycles being approximately of about 74 periods months which is consistent with the length suggested by the business cycle theory

long run purchasing power parity during the recent float abstract this paper examines the relevance of long run purchasing power parity ppp which allows for measurement errors during the recent floating exchange rate period previous empirical studies generally fail to find support for long run ppp over this period in this paper in this paper the cointegration property of exchange rates and prices is examined using maximum likelihood procedure and we find significant evidence favorable to long run ppp further tests for symmetry and proportionality indicate that these two conditions are not generally with the data the results support the hypothesis of long run ppp with measurement errors in prices

extraction costs and the economics of nonrenewable resources the study questions the fundamental assumption of the standard aggregate exploration extraction model of nonrenewable resources that extraction costs and the level of reserves are inversely related it also raises questions about the model s conclusions regarding exploration incentives and the valuation of reserves an empirically tested disaggregate model is presented that suggests that exploration activity occurs from firms attempting to balance marginal extraction plus user costs at the intensive and extensive margins exploration is carried out until the marginal discovery cost of a deposit equals its present asset value and a u shaped price path is indicated

fixed versus flexible lessons from ems order flow abstract we extend the literature on regime dependent volatility in two ways first our microstructural model provides a qualitatively new explanation second we test implications of our model using europe s recent shift to rigidly fixed rates ems to emu in the model shocks to order flow induce more volatility under flexible rates because the elasticity of speculative demand is endogenously low leading to pronounced portfolio balance effects new data on ff dm transactions show that order flow had persistent effects on the exchange rate before emu parities were announced after announcement the ff dm rate was decoupled from order flow as the model predicts

banking on currency forecasts how predictable is change in money abstract the paper examines the predictive performance of four structural exchange rate models using both parametric and nonparametric techniques error correction versions of the models are fit so that plausible long run elasticities can be imposed on the fundamental variables of each model a variety of model evaluation statistics are reported our findings confirm that fundamental exchange rate models forecast no better than a random walk model for short term prediction horizons for longer horizons error correction terms can explain exchange rate movements significantly better than a no change forecast for a subset of the models and currencies we consider

measuring business cycle time the business cycle analysis of arthur f burns and wesley c mitchell and the national bureau of economic research presumed that aggregate economic variables evolve on a time scale defined by business cycle turning points rather than by months or quarters do macroeconomic variables appear to evolve on an economic rather than a calendar time scale evidence presented here suggests that they do however the estimated economic time scales are only weakly related to business cycle time scales providing evidence against the view underlying traditional business cycle analysis copyright 1987 by university of chicago press

cointegration as an explanation for the meese rogoff puzzle abstractsome economists suggest that the failure of exchange rate models to outperform the random walk in exchange rate forecasting out of sample can be attributed to failure to take into account cointegration when it is present we attempt to find out if cointegration matters for forecasting accuracy by examining the relation between the stationarity and size of the forecasting error results based on three macroeconomic models of exchange rates do not provide strong support for the proposition that cointegration matters for forecasting accuracy the simulation results show that while stationary errors tend to be smaller than non stationary errors this is not a universal rule irrespective of the presence or absence of cointegration none of the three models can outperform the random walk in out of sample forecasting which means that cointegration cannot solve the meese rogoff puzzle

non renewable resource prices deterministic or stochastic trends in this paper we examine temporal properties of 11 natural resource real price series from 1870 to 1990 recent studies by ahrens and sharma trends in natural resource commodity prices deterministic or stochastic j environ econom manage 33 1997 59 74 berck and roberts natural resource prices will they ever turn up j environ econom manage 31 1996 65 78 and slade grade selection under uncertainty least cost last and other anomalies j environ econom manage 15 1988 189 205 among others find that many non renewable resource prices have a stochastic trend we revisit this issue by employing a lagrangian multiplier unit root test that allows for two endogenously determined structural breaks with and without a quadratic trend contrary to previous research we find evidence against the unit root hypothesis for all price series our findings support characterizing natural resource prices as stationary around deterministic trends with structural breaks we additionally show that both pre testing for unit roots with breaks and allowing for breaks in the forecast model can improve forecast accuracy overall the results in this paper are important in both a positive and normative sense without an appropriate understanding of the dynamics of a time series empirical verification of theories forecasting and proper inference are potentially fruitless

an investigation of customer order flow in the foreign exchange market this paper examines the effect that heterogeneous customer orders flows have on exchange rates by using a new propreitary dataset of weekly net order flow segmented by customer type across nine of the most liquid currency pairs we make three contributions first we investigate the extent to which order flow can help to explain exchange rate movements over and above the influence of macroeconomic variables second we look at the usefulness of order flow in forecasting exchange rate movements at longer horizons than those generally considered in the microstructure literature finally we address the question of whether the out of sample exchange rate forecasts generated by order flows can be employed profitably in the foreign exchange markets

hotelling under pressure we show that oil production from existing wells in texas does not respond to oil prices while drilling activity and costs respond strongly to explain these facts we reformulate hotelling s class

how to deal with the rebound effect a policy oriented approach policy makers and environmental agencies have echoed concerns brought forward by academics about the need to address the rebound effect for achieving absolute energy and environmental decoupling however such concerns have generally not been translated into tangible policy action the reasons behind this inaction are not fully understood and much remains unknown about the status of the rebound effect issue on the policy agenda and policy pathways available such knowledge gaps may hamper the development of effective policies to address this issue in this paper we examine the extent to and ways in which the rebound effect is considered in policy documents and analyse thirteen specific policy pathways for rebound mitigation the effectiveness of the pathways is scrutinised and conclusions are offered to mitigate rebound effects the main policy conclusions of the paper are that an appropriate policy design and policy mix are key to avoiding undesired outcomes such as the creation of additional rebound effects and environmental trade offs from the discussion economy wide cap and trade systems as well as energy and carbon taxes when designed appropriately emerge as the most effective policies in setting a ceiling for emissions and addressing energy use across the economy

stationarity changes in long run energy commodity prices abstract situated at the intersection of the literatures on speculative storage and non renewable commodity scarcity this paper considers whether changes in persistence have occurred in long run u s prices of the energy commodities crude oil natural gas and bituminous coal we allow for a structural break when testing for a break in persistence to avoid a change in the stochastic properties of prices being confounded by an unaccounted for deterministic shift in the price series we find that coal prices are trend stationary throughout their evolution and that oil prices change from stationarity to non stationarity in the decade between the late 1960s to late 1970s the result on gas prices is ambiguous our results demonstrate the importance of accounting for a possible structural shift when testing for breaks in persistence while being robust to the exact date of the structural break based on our analysis we caution against viewing long run energy commodity prices as being non stationary and conclude in favor of modeling commodity market fundamentals as stationary meaning that speculative storage will tend to have a dampening effect on prices we also cannot reject that long run prices of coal and with some hesitation gas follow a hotelling type rule in contrast we reject the hotelling rule for oil prices since the late 1960s early 1970s

a time use perspective on the materials intensity of consumption abstract the ecological requirements to drastically increase the productivity of materials use call for improvements in the efficiency of consumption this eco efficiency discussion often takes a functional view on consumption noting that present consumption is inefficient and that it is not the products that the consumers want but the services that the products yield however contemporary consumption serves many needs that are not functional and universal but subjective and obscured from the producers this paper develops a time use approach towards consumption which makes allowance for the subjectivity of needs while still enabling the analysts to approach the concept of a sustainable lifestyle a distinctive premise of the analysis is that it assumes time and money not to be interchangeable and consumption to be limited by available consumption time instead of purchasing power this approach is demonstrated by linking the direct and the indirect energy use of finnish two person households to the data of a national time use survey the results are used to point out some of the potential time use rebound effects of such new eco efficient services that transfer activities from private households to the market actors

environmental rebound effect of energy efficiency improvements in colombian households abstract colombia aims to diversify and decarbonize its energy sector by encouraging the use of non conventional renewable resources policies and or measures to achieve this will presumably help to achieve national and international environmental goals yet potential rebound effects may reduce its efficacy by triggering additional demand and environmental burdens one of such rebound effects may take place as household demand rises in response to cheaper electricity prices due to the increasing shares of wind power this study assesses the environmental rebound effect ere in the household sector from increased shares of wind power into the colombian power grid across six environmental impacts and for the period 2020 2030 the method used combines life cycle assessment input output modelling energy system modelling econometrics and re spending modelling the results show that the ere has the potential to partially and even completely offset any environmental savings backfire effect depending on the specific impact year and modelling choices considered the magnitude of the ere as the percentage of potential environmental savings that are offset ranges highly across impacts from a negligible 1 eutrophication to a staggering 9241 photochemical ozone creation the ere has thus the potential to render decarbonization policies largely ineffective which calls for rebound mitigation policies such as environmental taxes

variable long term trends in mineral prices the ongoing tug of war between exploration depletion and technological change abstract this paper explores the use of low frequency band pass filters for describing long run trends in real mineral commodity prices this approach has the advantage of allowing long run trend rates to evolve gradually over time rather than assuming that they are constant perhaps with occasional structural breaks over time this is a flexible way of capturing the ongoing tug of war between exploration depletion and technological change over 100 mineral and commodities stretching back to the late 19th or early 20th century are considered the variety of lr trends is astonishing but very few increase monotonically contrary to the prediction of the basic hotelling model some decline monotonically as predicted by prebisch and singer some have the u shaped pattern predicted by pindyck 1978 heal 1981 and slade 1982 others have changed direction up to three times in the period since 1900 the tug of war continues with exhaustion nowhere in sight

economic growth and transitions between renewable and nonrenewable energy resources abstract we study transitions between nonrenewable and renewable energy forms at different development stages of an economy it is shown that in the historical context the emphasis on energy production may evolve from renewables to nonrenewables and back to renewables typically both energy forms are used simultaneously along the equilibrium path nonrenewable resource consumption may increase and their price decrease an inverted u relation between carbon emissions and income level may follow even without environmental policy

distributional effects of alternative vehicle pollution control policies abstract previous work shows that policies that subsidize new vehicles and tax size miles or gasoline efficiently reduce pollution less is known about their distributional effects this paper examines distributional effects by estimating the joint demand for vehicles and miles using the consumer expenditure survey greater price responsiveness among low income households enhances progressivity of gas or miles taxes across lower incomes and mitigates regressivity across upper incomes taxes on engine size or subsidies to new vehicles are significantly more regressive than gas or miles taxes

the mystery of the multiplying marks a modification of the monetary model fair ray and dwight jaffee methods of estimation for markets in disequilibrium econometrica 40 may 1972 497 514 fair ray and harry kelejian methods of estimation for markets in disequilibrium further study econometrica 42 jan 1974 177 190 goldfeld stephen and richard quandt estimation in a disequilibrium model and the value of information journal of econometrics 3 nov 1975 325 348 hausman jerry the effects of wages taxes and fixed costs on women s labor force participation journal of public economics 14 oct 1980 161 194 mcdonald john and robert moffitt the uses of tobit analysis this review 62 may 1980 318 321 maddala g s and forrest nelson maximum likelihood methods for models of markets in disequilibrium econometrica 42 nov 1974 1013 1030 moffit robert and kenneth kehrer the effect of tax and transfer programs on labor supply the evidence from the income maintenance experiments in ronald ehrenberg ed research in labor economics vol 4 greenwich conn jai press 1981 nelson forrest censored regression models with unobserved stochastic censoring thresholds journal of econometrics 6 nov 1977 309 327 oi walter labor as a quasi fixed factor journal of political economy 70 dec 1962 538 555 rosen harvey and richard quandt estimation of a disequilibrium aggregate labor market this review 60 aug 1978 371 379 tobin james estimation of relationships for limited dependent variables econometrica 26 jan 1958 24 36