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

why are corrupt countries less successful in consolidating their budgets following the financial crisis many countries introduced fiscal stimulus packages making budget consolidations in the future rather challenging using a data set for 28 oecd countries spanning the period 1978 2007 we contribute to the literature on success probabilities of consolidation attempts by exploring the impact of corruption and in particular the interplay of corruption and the choice of the policy instrument we find that corruption significantly reduces the success rate when controlling for the change in government expenditures however the impact of corruption is insignificant or at least becomes less pronounced we therefore relate the choice of the fiscal instrument to corruption and find that corrupt countries rely significantly less on expenditure cuts during periods of consolidation attempts we conclude that international organizations should be careful in observing what corrupt countries do when trying to consolidate their budgets

rational mean variance decisions for subsistence farmers this paper explores the issue of approximating expected utility in applying portfolio theory it has been demonstrated that expected utility is very closely approximated by an appropriate quadratic function recent studies have again questioned the empirical validity of mean variance analysis these efforts disregard the importance of the differences among various approximations and historically have focused on domestic financial securities we re examine the problem in the context of determining risk efficient portfolios of production activities for subsistence farmers the risks faced by these farmers are large and probably actuarially nonneutral thus recommendations based on an inappropriate quadratic approximation could result in substantial losses in welfare

the impacts of tourism energy consumption and political instability on economic growth in the mena countries using panel data of 24 countries in the middle east and north african mena region from 2001 to 2009 the purpose of this study is to examine the impacts of tourism energy consumption and political instability on economic growth within the neoclassical growth framework to address the objective of this study we utilise both the static panel data approach as well as the dynamic generalised method of moments gmm estimator to examine the impact of candidate variables our results show that energy consumption and tourism significantly contribute to the economic growth of countries in the mena region hence our study lends some support to the existence of the tourism led growth and energy led growth hypotheses in the region in line with our expectation our estimation results also reveal that political instability impedes the process of economic growth and development in the mena region therefore macroeconomic policies to promote expansion in tourism and energy consumption will directly stimulate economic growth additionally efforts to help the region overcome its history of political instability would attract more international tourist arrivals and further invigorate economic growth

the implications of financial cooperation in israel s semi cooperative villages abstract financial cooperation through credit sharing and co signing of debts was a source of strength for israel s semi cooperative moshavim in the early decades of their development but such cooperation entails a potential free rider problem when farmers borrowings are uncoordinated and recent events in israel have demonstrated the severe implications it can have this paper presents a theoretical analysis of the externalities generated by financial cooperation and tests its conclusions empirically using israeli data simulation results indicate that the potential instability of financial cooperation is aggrevated when the moshav population is heterogeneous

testing ricardian equivalence under uncertainty this paper uses experimental methods to analyze ricardian equivalence when the probability of debt retirement is less than one the results suggest that the presence of outstanding debt and the probability of debt retirement have a strong influence on savings behavior when the probability of debt retirement is low consumption by the current generation increases as predicted by keynesian theory however as the probability of debt retirement increases bequests rise to offset the future generation s expected repayment liability and deficit spending becomes much less expansionary as predicted by ricardian theory in general the average bequest is significantly larger when an outstanding debt is passed on to the next generation than when no debt exists regardless of the probability of debt retirement however as long as there is some uncertainty about debt repayment the presence of debt always stimulates some additional consumption so that strong variants of ricardian equivalence are not found

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

electricity consumption and economic growth in algeria a multivariate causality analysis in the presence of structural change this article addresses the issue of electricity consumption petroleum price and economic growth in algeria the primary objective is to investigate and analyze the causal relationship between electricity consumption ec brent oil price bop and economic growth gdp for algeria over the period of 1971 2010 to examine short run long run and joint causality relationships we used a multivariate cointegration approach based on the recent advances in time series econometrics e g zivot andrews test gregory hansen cointegration test vector error correction models vecm the empirical results show that there is evidence of short run and a strong long run bi directional causal relationship between ec and real gdp in algeria findings indicate also the absence of causal relationship between bop and ec our empirical findings support the idea that there a link between electricity consumption and economic growth and disproves the neo classical assumption referred to as the neutrality hypothesis

decentralization and the duration of fiscal consolidation shifting the burden across layers of government this paper analyzes the relationship between fiscal decentralization the duration of fiscal consolidation episodes and their success for 17 oecd countries between 1978 and 2009 the consolidation of the general government budget appears to be of longer duration when expenditure decisions are more decentralized we also find that transfers from higher levels of government are cut during consolidation episodes suggesting that central governments shift the burden of consolidation towards lower tiers of government this is especially true when the latter have little legal autonomy to raise tax revenues and have little influence over executive decisions taken at the central level we document that this increases local governments public debt gdp ratios in terms of the success of consolidation episodes countries with greater degrees of decentralization appear to make smaller improvements in their primary balance when consolidating

the role of investment for energy conservation future japanese economic growth abstract this article describes a variant of the cobb douglas production function the rasche tatom model which explicitly includes an energy factor the model is applied to the japanese economy to investigate the role of investment for energy conservation first the impact of rising energy prices on potential gnp and productivity is shown second it is suggested that the japanese economy will achieve a high growth rate 5 0 5 5 in the coming five years through substitution of capital for energy ie investment for energy conservation an international comparison of the models is also discussed

causal independence between energy consumption and economic growth in liberia evidence from a non parametric bootstrapped causality test abstract this contribution investigates causal interdependence between energy consumption and economic growth in liberia and proposes application of a bootstrap methodology to better reflect causality employment is incorporated as additional variable the study demonstrates evidence of distinct bidirectional granger causality between energy consumption and economic growth additionally the results show that employment in liberia granger causes economic growth and apply irrespective of the short run or long run evidence from a monte carlo experiment reveals that the asymptotic granger causality test suffers size distortion problem for liberian data suggesting that the bootstrap technique employed in this study is more appropriate given the empirical results implications are that energy expansion policies like energy subsidy or low energy tariff for instance would be necessary to cope with demand exerted as a result of economic growth in liberia furthermore liberia might have the performance of its employment generation on the economy partly determined by adequate energy therefore it seems fully justified that a quick shift towards energy production based on clean energy sources may significantly slow down economic growth in liberia hence the government s target to implement a long term strategy to make liberia a carbon neutral country and eventually less carbon dependent by 2050 is understandable

land allocation under uncertainty for alternative specifications of return distributions reply the relevance and usefulness of mean variance portfolio analysis is not a point we wish to question for roughly thirty years this analysis has been a cornerstone of financial and production analysis under risk our goal is to delimit circumstances in which it can be straightforwardly applied and those where some modification may be necessary before addressing tew and reid tr regarding the empirical illustration in collender and zilberman cz we review the cz contribution cz is concerned with resource allocation under uncertainty in the context of nonnormal returns much empirical evidence is available to suggest that agricultural decision makers frequently make decisions under such circumstances literature supporting this view is cited in cz since cz was published buccola has concluded that the chance of encountering approximately gaussian returns in reasonable agricultural situations is small having established the relevance of the problem our contributions a e twofold first we develop a decision making technique that does not impose counterfactual assumptions second we develop a test for the statistical significance of losses in expected utility resulting from the counterfactual imposition of the mean variance framework the first contribution is accomplished through the development of the eumgf approach the approach facilitates decision making consistent with expected utility maximization without imposing normality of returns the relaxation of this assumption is consistent with empirical evidence the second contribution is accomplished by developing a test statistic for differences in expected utility cz and the subsequent article by collender and chalfant illustrate that one can use the eumgf approach to determine if departures from normality are relevant in the decision making process given the risk preferences of the decision maker cz do not contend that departures from normality are always important just that they may be this is more likely true as partial risk aversion increases and or distributions depart further from normality

electricity planning and implementation in sub saharan africa a systematic review abstract universal electricity access is an important development objective and the focus of a number of key global un initiatives while robust electricity planning is widely believed to be a prerequisite for effective electrification to date no comprehensive overview of electricity planning research has been undertaken on sub saharan africa the world region with the lowest access rates this paper reviews quantitative and qualitative electricity planning and related implementation research considering each of the 49 sub saharan african countries the four regional power pools and the sub continent as a whole applying a broad understanding of electricity planning and a practical limit of 20 reviewed articles per country and region 306 relevant peer reviewed journal articles are included in this review a general classification scheme is introduced that classifies the planning literature along the addressed value chain depth number of different analysed criteria and number of evaluated decision alternatives the literature is found to be strongly clustered in a few countries with less than 5 identified relevant articles in 36 of the 49 countries the total amount of articles per year is clearly increasing over time addressing technology choice operation distribution and implementation analyses although including different high level criteria in analysing electricity systems is common the literature is only starting to use formalised multi criteria decision making mcdm tools the review indicates that 63 of relevant articles favour renewable energy technologies for their given problems frequently mentioned success factors for electrification in sub saharan africa include adequate policy design sufficient finance and favourable political conditions while considerable regional and methodological literature gaps are apparent the literature in this review identifies a rich and fruitful ground for future research to fill these gaps

the rationale of the mean standard deviation analysis skewness preference and the demand for money publisher summary this chapter discusses the rationale of the mean standard deviation analysis skewness preference and the demand for money in january 1969 issue of the review of economic studies karl borch and martin feldstein separately criticized the widely used mean variance analysis of portfolio selection borch contended that any system of upward sloping mean standard deviation e s indifference curves can be shown to be inconsistent with the basic axiom of choice under uncertainty he pointed out that one can always pick any two points on an upward sloping indifference curve to represent two bernoulli distributions with probability 1 p of gaining the same amount x in both the cases and probability p of gaining y1 in the case of one distribution and y2 in the case of the second distribution with y2 y1 if the second distribution represents the point to the northeast of the other point then by the dominance axiom the second distribution must be preferred to the first which contradicts the basic meaning of indifference curves feldstein by using a log utility function and a lognormal distribution for investment outcome showed that e s indifference curves for a risk averter need not be convex downwards though upward sloping they would change from convex to concave once the standard deviation of the outcome exceeds the mean multiplied by on the face of it this seems to suggest that risk aversion might decrease as risk is increased beyond a certain extent

the exchange rate and fiscal consolidation episodes in emerging market economies abstract an analysis of fiscal consolidations in emerging market economies during 1970 2004 suggests that exchange rate depreciation raises the probability of a fiscal consolidation being successful including when controlling for debt growth the composition of the consolidation and degree of democracy

reforms in sub saharan africa s power industries most sub saharan countries wish to carry out reforms in the organisation of their power companies up to now only three countries have operated major changes in their statutory system a few others are well engaged in the process but many still find themselves at a stage of definition and preparation of reforms delays observed in relation to agendas fixed initially can mainly be explained by hesitation of the decision makers over the schemes to be maintained as much because the solutions proposed do not provide totally satisfactory answers to the questions they are confronted with because of the desire to explore other possibilities better adapted to the african reality the recent advent of independent power production and of interconnection development projects in these countries the impact of which needs to be fully assessed can have an initial effect of slowing down the pace of reforms but the possibilities these developments offer for diversification of power supply sources endow them with particular interest for the definition of new sectorial models

the ricardian approach to budget deficits persistent budget deficits have increased economists interest in theories and evidence about fiscal policy this paper develops the ricardian approach and contrasts it with standard models the discussion considers from major theoretical objections to ricardian equivalence finite lifetimes imperfect capital markets uncertainty about future taxes and incomes and the distorting effects of taxation the paper then considers empirical evidence on interest rates consumption and saving and current account deficits the conclusion is that the ricardian approach is a useful first order approximation and that this approach will probably become the benchmark model for assessing fiscal policy this abstract was borrowed from another version of this item

success and failure of fiscal consolidation in the oecd a multivariate analysis this paper tests five hypotheses explaining the success and failure of fiscal consol idation in a multivariate regression framework these hypotheses concern i the composition of the consolidation programme ii its size and persistence iii the gravity of the debt situation iv the influence of the international macroeconomic environment and v the con tribution of a preceding devaluation to test for composition effects we use cyclically adjusted data although many conclusions of the existing empirical literature are confirmed some do not survive a popular hypothesis that to succeed consolidation should rely on cutting the government wage bill is rejected a new empirical result is that the contribution of a devalu ation to the success of fiscal consolidation depends on the composition of the consolidation programme

conservation payments under risk a stochastic dominance approach conservation payments can be used to preserve forest and agroforest systems to explain landowners land use decisions and determine appropriate conservation payments it is necessary to focus on revenue risk marginal conditional stochastic dominance rules are used to derive conditions for determining the conservation payments required to guarantee that the environmentally preferred land use dominates an empirical application to shaded coffee protection in the biologically important choco region of west ecuador shows that conservation payments required for preserving shaded coffee areas are much higher than those calculated under risk neutral assumptions further the extant distribution of land has strong impacts on the required payments

reform of china s electric power industry challenges facing the government abstract china s electrical power industry requires substantial reform if the country s economic growth is to be sustained the 1997 electricity law the creation of a state power company and the abolition of the ministry of electric power are important first steps on the path of reform but it seems that a clear plan is lacking objectives of the reform should include increasing the capacity to deliver power constraining the costs of the power industry increasing end user efficiency and minimising environmental damage efforts should be directed at restructuring the industry in such a way that fair competition may be introduced at least in power generation and at establishing a viable regulatory agency both tasks have the potential to be thwarted by a range of vested interests at different levels of government and industry

estimation risk in farm planning under uncertainty this paper examines the impact of estimation risk on a decision maker s ability to distinguish between the mean variance characteristics of different farm plans the importance of making such distinctions should be clear risk averse decision makers will want to bear risk only if they can be reasonably confident of commensurate increases in expected return when parameters are unknown statistically testing for differences in their estimated values is appropriate an illustration of such tests using data from hazell suggests considerable resources must be devoted toward data generation if normative statements under uncertainty are to be reliable

fiscal consolidations quality economic conditions and success recent research has demonstrated theimportance of good quality of fiscaladjustments for the success of governmentbudget consolidations we extend thisapproach to analyze the importance of theeconomic conditions in which fiscalconsolidations are started for theirsuccess the cyclical positions of thedomestic and international economy theinitial debt level and the stance of fiscalpolicy in the oecd are all importantdeterminants of the likelihood of fiscalconsolidations they also affect thegovernment s choice of consolidationstrategy making them importantdeterminants of the success of fiscalconsolidations in contrast the monetarypolicy stance plays only a negligible rolefor fiscal consolidations we use theanalysis to test for any maastricht effectson the performance of european governmentsduring the 1990s such effects are weak atbest and occurred only during the firsthalf of the decade

energy consumption and economic growth evidence from the commonwealth of independent states abstract this study examines the relationship between energy consumption and economic growth for eleven countries of the commonwealth of independent states over the period 1991 2005 within a multivariate panel data framework based on pedroni 1999 pedroni 2004 heterogeneous panel cointegration test and corresponding error correction model cointegration is present between real gdp energy consumption real gross fixed capital formation and labor force with the respective coefficients positive and statistically significant the results of the error correction model reveal the presence of unidirectional causality from energy consumption to economic growth in the short run while bidirectional causality between energy consumption and economic growth in the long run thus the results lend support for the feedback hypothesis associated with the relationship between energy consumption and economic growth

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

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

energy economic growth and causality in developing countries a case study of tanzania and nigeria the debate about the precise role of energy in economic development remains contentious existing empirical studies have produced varying results some have argued the complementarity between energy and other factors of production and others have indicated that energy can be substituted for other factors of production commonly these studies have focused primarily on the developed countries one explanation being that supply constraints and price rigidities render any study on factor substitutions in developing countries meaningless however the functional relationship between energy consumption and income in developing countries is constantly investigated with the use of regression techniques while such techniques are useful in empirical analysis no mechanism exists for indicating causal directions between variables this limits the scope for policy analysis and prescription the need to identify causal direction between energy consumption and income growth in developing countries is overwhelming apart from providing further insights into the role of energy in economic development it provides policy analysts with a clearer understanding of the likely impact of energy supply constraints on economic growth this article examines the causal directions between energy consumption and economic growth proxied by gdp and gnp for nigeria and tanzania the results show a simultaneous causal relationship between energy and economic growth for both countries the implication being that unless energy supply constraints are eased economic growth and development will remain elusive to these countries given similar economic characteristics and profiling the same energy scenario for other developing countries our finding supports the view that energy plays a key role in economic development

government deficits and aggregate demand abstract the evidence presented in this paper indicates that changes in government spending transfers and taxes can have substantial effects on aggregate demand the estimates also indicate that the promise of future social security benefits significantly reduces private saving each the basic implications of the so called ricardian equivalence theorem is contradicted by the data the results are consistent with the more general view of the effects of fiscal actions and fiscal expectations that is described in the paper

productivity growth and energy consumption in the nigerian manufacturing sector a panel data analysis this paper examines the impact of efficiency in energy consumption on the growth in productivity in the nigerian manufacturing sector the study utilizes a panel data technique covering a period of substantial energy price reviews in nigeria the study shows that for most industries productivity growth has been energy using whereas in a few attempts have been made to switch productivity growth towards energy saving however it will take some time for the effect of current energy pricing policy to permeate the whole manufacturing sector due to the high cost required to invest in energy saving equipment especially in the face of a rapid decline in real income coupled with high product prices

nigeria s electric power sector reform what should form the key objectives nigeria s electric power sector requires substantial reform if the country s economic development and poverty alleviation program is to be realised this understanding is behind the reform programme recently initiated by the nigerian government with the goal of privatising the national electric power monopoly nepa currently the country faces serious energy crisis due to declining electricity generation from domestic power plants which are basically dilapidated obsolete unreliable and in an appalling state of disrepair reflecting the poor maintenance culture in the country and gross inefficiency of the public utility provider building on an analysis of the major shortcomings of the current electric power company this paper presents the central issues that should form the key objectives of the proposed reform this include corporatization of the electric power industry increasing access and power delivery capacity constraining the costs of the power industry and increasing efficiency and share of renewables in energy generation as well as minimising environmental damage we conclude with the observation that efforts at reform will not yield the desired result if the current end user inefficiency is not constrained as nigeria implements its national utility privatisation programme it is hoped that this review will benefit policy makers and emerging managers and providers of electricity service in the country

between ostrom and nordhaus the research landscape of sustainability economics abstract we survey the emerging research area of sustainability economics through a quantitative full text analysis of peer reviewed journal publications from 1987 to 2013 to identify relevant contributions we draw on existing definitions of sustainability economics for a keyword based identification strategy a combined focus on a the human nature relationship b the long term uncertain future c normative orientation towards sustainability and d economic analysis our analysis of a random subsample of 343 relevant papers reveals that i sustainability economics is a rapidly developing research area ii while theoretical contributions shaped the area in earlier years applied work now constitutes the largest share of contributions iii the research landscape can be clustered into eleven research clusters these range from participatory governance of social ecological systems associated with the work of elinor ostrom to questions of intertemporal allocation and distribution applied to climate economics associated with the work of william nordhaus iv the research area is broad in scope and heterogeneous and there is relatively little interaction between important clusters v relevant contributions are published in more than 100 journals ten journals publish half of all contributions led by ecological economics and 40 appear in non economics journals underscoring the importance of interdisciplinary dialogue

do political variables affect fiscal policy adjustment decisions new empirical evidence we test eight hypotheses on political factors influencing the likelihood that a fiscal policy adjustment occurs we employ a panel discrete choice model for 20 oecd countries for the period 1970 2003 two different definitions of fiscal adjustments are used to capture the differences between rapid and gradual adjustments we find that these types of fiscal adjustment are primarily driven by economic factors and are hardly affected by political variables the likelihood that a rapid adjustment takes place is only influenced by upcoming elections while the likelihood that a gradual adjustment takes place increases in case of broad policy reform

land allocation under uncertainty for alternative specifications of return distributions using the expected utility moment generating function approach a land allocation rule is derived which is both independent of the nature of the underlying distribution of each element in the choice set and accounts for all moments of that distribution this decision rule is applied to the choice between cotton and corn in the mississippi delta to demonstrate that consideration of just the first two moments of the distribution can often be unjustified and damaging empirically theoretically and in terms of the utility of the decision maker

economic growth and alternative deficit reducing tax increases and expenditure cuts a cross sectional study this paper assesses empirically the relative desirability of alternative deficit reducing tax increases and expenditure cuts in terms of their individual impact on economic growth using cross sectional data for a sample of 21 developed countries for the period 1972 81

is public expenditure productive abstract this paper considers the relationship between aggregate productivity and stock and flow government spending variables the empirical results indicate that i the nonmilitary public capital stock is dramatically more important in determining productivity than is either the flow of nonmilitary or military spending ii military capital bears little relation to productivity and iii a core infrastructure of streets highways airports mass transit sewers water systems etc has most explanatory power for productivity the paper also suggests an important role for the net public capital stock in the productivity slowdown of the last fifteen years

renewable energy electricity development in ghana observations concerns substitution possibilities and implications for the economy abstract can ghana build its economy on renewable energy is it possible to substitute nonrenewable for renewable energy what is the impact of renewable energy on the economy of ghana these questions are relevant and worth considering as far as the renewable energy development agenda in ghana is concern using the translog production function approach this study primarily investigates whether ghana can move away from nonrenewable electricity generation to renewable power generation in particular we provide estimates for the relationship between the two energy types and output the estimates are then used to calculate the output and substitution elasticities between renewable and nonrenewable energy our findings show that while the impact of nonrenewable energy on ghana s economy is negative that of renewable energy is insignificant with output elasticities for both energy types averaging 0 139 and 1 875 respectively even though substitution elasticity suggests the possibility of moving towards a renewable power generation system this study also highlights the limitations associated with such transition citing inherent problems such as scale cost and location based on the analysis done in the context of the findings this study recommends a policy that supports an optimal energy matrix with both renewable and nonrenewable sources

risk aversion and land allocation between annual and perennial crops in semisubsistence farming a stochastic optimization approach this article analyzes the effect of production uncertainty on farmland allocation decisions between perennial and annual crops focusing on a representative farmer s attitude toward risk a dynamic stochastic optimization model that considers net planting the difference between new plantings and removals of perennial crops that achieve full production cycle is used the effect of uncertainty on the representative farmer s decisions to increase or decrease perennial crops acreage on the optimal path is examined our results reveal that the response of optimal path of net planting to uncertainty related to perennial crop production is highly affected by the farmer s attitude toward risk a risk averse or a low risk loving farmer tends to reduce land allocation to perennial crops under uncertainty while a high risk loving farmer will do exactly the opposite also due to disutility of farming the farmer tends to reduce land allocation to perennial crops when prices are high enough for him to attain a desired income level expectation one implication of this research is the need for mechanization in sub saharan countries in particular that increases per acreage yield and output in semisubsistence agriculture

the effects of fiscal consolidations on the composition of government spending abstractin response to increasing debt paths governments often implement fiscal consolidation programs this paper studies the impact of these programs on the composition of government spending s

the economic impact of subsidy phase out in oil exporting developing countries a case study of algeria iran and nigeria abstract one of the crucial issues of energy markets in oil exporting developing countries is the high level of subsidies on petroleum products and the low efficiency in energy use the purpose of this paper is to investigate the impacts of a subsidy phase out policy on the energy sector and oil revenues in three countries algeria iran and nigeria by using a standard econometric approach we find that the effects of different deregulation policies are substantial we also analyse the impact of a policy based on autonomous energy efficiency improvement finally a combination of both policies is elaborated and quantified our results show that a policy geared at more rational use of energy would permit these countries to save enough oil to meet future increases in demand while maintaining stable production capacity furthermore such an energy policy could result in additional oil revenues which would enhance their economic development

the empirical minimum variance hedge decision making under unknown true parameters estimation risk is discussed along with bayes and parameter certainty equivalent pce criteria bayes criterion incorporates estimation risk in a manner consistent with expected utility maximization the pce method which is the most commonly used is not consistent with expected utility maximization bayes criterion is employed to solve for the minimum variance hedge ratio empirical application of bayes minimum variance hedge ratio is addressed and illustrated simulations shoe that discrepancies between prior and sample parameters may lead to substantial differences between bayesian and pce minimum variance hedges

the mean and variance of the mean variance decision rule the widely used mean variance approach to decisions under uncertainty requires estimates of the parameters of the joint distribution of returns when optimal behavior is determined using estimates rather than the true values the decision is a random variable we consider the reliability of mean variance analysis by examining the bias and variance covariance matrix for the decision vector the latter shows that decisions based on estimated parameters can have a large variance around the true optimum the results show that optimal decisions can differ substantially from those based on meanvariance analysis

towards understanding the benefits and challenges of smart micro grid for electricity supply system in nigeria the poor state of electricity supply system in nigeria is threatening the welfare and security of life and properties of millions of individuals with adverse economic consequences for the country the inadequacy of the national grid especially the inability of the electricity generation capacity to match increasing demand in the country has led to increasing agitation for increased penetration of renewable energy sources ress into the electricity supply mix while great attention has been focused on the potential of ress for electricity generation in the country little or no attention has been given to the application of smart micro grid sm g technologies to the ageing nigeria grid infrastructures and electrification of the rural areas the aim of this paper is to bring into focus the benefits and challenges of enabling sm g in the electricity supply system in nigeria sm g will bring benefits to the electricity stakeholders in form of improvements in reliability efficiency economics environment security and safety the paper gives an overview and reviews the current state of the electricity supply system in the country it discusses the sm g concepts and associated technologies and highlights how they can help address the electricity problems in the country the challenges of applying these concepts in nigeria context are also discussed enabling sm g in the country will not only lead to improvement in the quality efficiency and reliability of the electricity grid but also promote the provision of electricity supply to the remote rural areas using ress

towards an explanation of the productivity slowdown an acceleration deceleration hypothesis after two and a half decades of prosperous post war development western industrialised countries recently experienced a slowdown of economic growth and productivity advance together with an increase in the rates of inflation and unemployment in trying to explain this malaise we are looking at a diagnosis that could help us to identify early indicators of a future turnaround or some policy variables which deserve to be included in a therapeutic programme although we shall focus on what can be measured complying with the standards of the guild we shall not refrain from considering complex relationships which can be grasped only intuitively even if they include phenomena which lie beyond the limits of official statistics 2 the outcome may be soft economics but we find some consolation in the dictum that it is better to be vaguely right than to be precisely wrong

electricity use and economic development abstract a study of the relationship between electricity use and economic development in over one hundred countries constituting over 99 of the global economy has been undertaken correlations between electricity consumption capita and gdp capita have been analysed and compared with those between total primary energy supply capita and gdp capita a supporting analysis has correlated the proportion of energy used in the form electricity the e e ratio with gdp capita the general conclusions of this research are that wealthy countries have a stronger correlation between electricity use and wealth creation than do poor countries and that for the global economy as a whole there is a stronger correlation between electricity use and wealth creation than there is between total energy use and wealth the study also shows that in wealthy countries the increase in wealth over time correlates with an increase in the e e ratio the results imply that the energy ratio toe should be replaced by the electricity ratio kwh as a development indicator and more precisely by the e e ratio kwh toe

electricity sector reform in cameroon is privatization the solution abstract the economic difficulties of cameroon and of its government owned companies led the international monetary fund imf and the world bank to set up a vast privatization program with the government s collaboration in the electricity sector the state had a complete control over the industry through the societe national d electricite sonel an integrated monopoly utility under the imf world bank program sonel has been sold to foreign interests this article presents cameroon s electricity sector the proposed reform and the importance of electricity in economic development an evaluation of the reform is presented from two different perspectives first we consider the reform from a theoretical and market design point of view second we challenge the reform from a more fundamental level by questioning the relevance of privatization at this stage of the electricity sector development this brings us to review the strategic place of electricity in economic growth how different countries have dealt with their electricity industry in early development stage and how the objective of multinational corporations could be in conflict with specific electricity sector goals from these two different perspectives we conclude that the imf and the world bank have set up a reform process that is against good public policy we conclude with some suggestions for improving the reform process

the effect of development aid unpredictability and migrants remittances on fiscal consolidation in developing countries summary we use panel data on 74 developing countries for the period 1980 2007 to examine the effects of aid unpredictability and migrants remittances on fiscal consolidation in these countries using two definitions of fiscal adjustment and a conditional logit model to perform our analysis evidence is shown that except for the case of low income countries especially gradual fiscal retrenchment remittances increase the likelihood of fiscal consolidation be the latter gradual or rapid surprisingly we observe that aid unpredictability does not affect the adoption of fiscal consolidation measures in all the groups considered

a cross sectional analysis of energy output correlation abstract the nature of the correlation between energy consumption and output is examined based on cross sectional data for 100 countries the bias in the correlation due to the use of nominal income and to the convention adopted in measuring non commercial energy consumption is analysed it is found that when real income is used and non commercial energy consumption measured in commercial energy replacement value the cross sectional energy elasticity increases rapidly from about unity for the low income developing countries to between 1 6 and 1 8 for the high income developing countries and declines marginally thereafter in the industrial country income range the results show certain disparity on energy output ratio across countries with higher income countries consuming disproportionately more energy per unit of real output

energy diversity and development in economic systems an empirical analysis abstract as economic systems develop over time they tend to become more complex with more structure and greater throughputs assuming favorable conditions energy use increases as more economic sectors develop and more channels for flow are opened economic diversity as measured by the number of economic sectors using energy and the equatability of flows between them generally increases as diversity increases the efficiency of generating outputs with a given amount of energy also increases development capacity the product of system energy throughput and diversity of flows is a measure of the potential system output and is calculated for selected countries capacity changes over time are shown to relate to changes in economic output in selected countries two distinct development strategies become evident one which promotes energy use and one which emphasizes diversity and the sustainability of each is examined while most countries utilize a mix of the two developing countries generally rely more on increasing energy use to increase output while developed countries tend to become more diverse as a means of increasing outputs sustainability is enhanced by strategies which promote diversity and resource use efficiency in economic systems

trigger points and budget cuts explaining the effects of fiscal austerity we propose and solve an optimizing model which explains counterintuitive effects of fiscal policy in terms of expectations if government spending follows an upward trending stochastic process which the public believes may fall sharply when it reaches specific trigger points then optimizing consumption behavior and simple budget constraint arithmetic imply a nonlinear relationship between private consumption and government spending this theoretical relation is consistent with the experience of several countries jel e62 e21 textbook aggregate demand models suggest simple relationships between the government budget and economic activity a cut in the government deficit for example depressing consumption and output though such models heavily influence the design of stabilization policies their micro foundations are unclear and their sharp predictions are not always consistent with reality in many countries large cuts in government spending carried out as part of stabilization programs have led to expansions rather than contractions in economic activity the absence of simple relationships be

fiscal adjustments do labor and product market institutions matter this paper investigates the role played by labor and product market institutions in determining the likelihood of initiating and of successfully concluding a fiscal adjustment using data for 16 oecd countries over the period 1970 to 2000 we find that a less generous unemployment benefit system rather than temporary caps on spending e g wage freezes contributes to the success of fiscal consolidation weaker forms of bargaining coordination and centralization facilitate the fiscal adjustment effort on the other hand product market deregulation and more flexible employment protection legislation do not contribute positively to fiscal consolidation