demise of the standard model for power sector reform and the emergence of hybrid power markets following earlier reforms in the power sectors of industrialized countries and emerging markets e g chile developing countries were encouraged to unbundle their electricity industries and to introduce competition and private sector participation this paper highlights the developments that led to how power sector reform came to be defined as a standard model and theoretical framework in its own right and how the model was used prescriptively in many developing countries however we also show that after more than 15 years of reform efforts this new industry model has not fully taken root in most developing countries finally we identify and characterize the emergence of new hybrid power markets which pose fresh performance and investment challenges

estimation of opportunity inequality in brazil using nonparametric local logistic regression abstract this article measured opportunity inequality in brazil by combining a series of theoretical and empirical tools the database was built using a two sample instrumental variable tsiv developed by angrist and krueger after that the axiomatic approach put forward by o neill et al was used in which the estimation of children s income distribution function is conditional on their fathers wages the inference process was based on nonparametric local logistic regression the results indicate that brazil has a high level of opportunity inequality in other words in the context of intergenerational mobility those whose fathers belong to lower income strata have to expend greater effort in order to attain a certain income level

economic policy and equality of opportunity we employ eop definitions that have appeared in the philosophical literature on distributive justice and apply it to a formal economic model which incorporates human capital investment and luck within and across generations the human capital acquisition technology features multiple stages of parental investments during childhood and on the job investments in adulthood the benchmark model features an intergenerational borrowing constraint education and low income subsidies which are financed by a progressive income tax the model is calibrated to the u s in 1990 on which we operationalize philosophical concepts by using the children s continuation values as outcomes and the state space of the recursive decision problem as circumstances this reveals that intergenerational investments should be accounted for when comparing measures of eop when conditioning on parental luck instead of outcomes eop looks much larger luck is overwhelmed by human capital accumulation in contrast when looking at children s net wealth instead of lifetime earnings eop looks worse intergenerational borrowing constraints are more pronounced in wealth than in earnings in counterfactual experiments we find that education subsidies increase utilitarian welfare and decrease overall inequality but does little to promote eop this is for two reasons when one takes the view that intergenerational efforts should be rewarded there is little room for improvement in eop to begin with on the other hand when one takes the view that intergenerational efforts should not be rewarded much stronger redistribution is needed for the policies to have a quantitative impact

ex ante and ex post welfare optimality under uncertainty it is widely believed by economic theorists that if there were no transactions costs and if all information about the economy were perfectly shared by all then arrow debreu contingent commodity markets should bring about an ideal allocation the basis for this belief seems clear we have the two efficiency theorems of welfare economics which assure us that in the absence of external effects any competitive allocation is pareto efficient and that any pareto efficient allocation is competitive provided that appropriate lump sum transfers are made of course there are some reservations that need to be made local satiation and non convexities are well known to cause problems but these are not the problems i wish to discuss here to return to the usual argument the next step involves noticing how with contingent commodity markets the efficiency theorems of welfare economics carry over to an economy with uncertainty as explained for instance in chapter 7 of debreu s theorpj of value the fundamental value judgment that gives these efficiency theorems their normative interest is what may be called consumer sovereignty it is an assumption that the social welfare ordering should respect the preferences that govern consumers market behaviour it is a serious value judgment more serious than most economists have been prepared to concede but its seriousness increases when there is uncertainty we know full well that individuals misperceive the probabilities of certain events assuming that they even perceive any probabilities at all see for example kahneman and tversky 1979 nor are we always willing to accept as appropriate the attitudes to risk of individuals who seem either extremely reckless or extremely cautious societies are often willing to make some gestures towards property owners who have not insured themselves adequately against damage from fire flood or tempest and not just because of imperfect insurance markets or even misperceptions of probabilities in addition the inequalities of income that arise when some individuals take more risks than others are not necessarily seen to be desirable particularly if an individual has undertaken a useful but risky activity and has a very low income as a result of failure such gestures are examples of contingent lump sum transfers it seems clear that if such transfers occur to a sufficient extent they could supplant completely the securities markets which are usually sufficient to bring about pareto efficiency they may even be able to go further and correct the imperfections of an arrow debreu market allocation when individuals do misperceive probabilities or else have wrong attitudes to risk this is the main question i wish to consider here the idea that consumer sovereignty should not always extend to economies with uncertainty is not new it can be found in work by diamond 1967 dr6ze

socio economic status health and lifestyle abstract the role of lifestyle in mediating the relationship between socio economic characteristics and health has been discussed extensively in the epidemiological and economic literatures previous analyses have not considered a formal framework incorporating unobservable heterogeneity in this paper we develop a simple economic model in which health is determined partially by lifestyle which depends on preferences budget and time constraints and unobservable characteristics we estimate a recursive empirical specification consisting of a health production function and reduced forms for the lifestyle equations using maximum simulated likelihood msl for a multivariate probit mvp model with discrete indicators of lifestyle choices and self assessed health sah on british panel data from the 1984 and 1991 health and lifestyle survey hals we find that sleeping well exercising and not smoking in 1984 have dramatic positive effects on the probability of reporting excellent or good sah in 1991 and that these effects are much larger having accounted for endogeneity the failure of epidemiological analyses to account for unobserved heterogeneity can explain their low estimates of the relevance of lifestyle in the socio economic status health relationship indicators for prudent alcohol consumption and eating breakfast in 1984 are not found to be statistically significant determinants of sah in 1991

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

powering africa meeting the financing and reform challenges africa faces chronic power problems including insufficient generation capacity low connectivity poor reliability and high costs all of which constrain development power capacity additions in sub saharan africa excl sa since the 1990 s were minuscule historically investments in the power sector in africa have come mostly from governments or public utilities with foreign aid support in recent years these sources of funding have been flat the fastest new sources of funding are from independent power producers ipps and from china to understand the determinant of the new sources the paper analyses the effect of several key factor and find non expected results such as there is no obvious correlation between unbundling or the presence of an independent regulator and the level of private investment through ipps or that there is no correlation between chinese investment in generation and resource rich countries dispelling the myth that chinese firms are only interested in africa s resources the paper delivers several recommendations that indicate that more attention needs to be given to issues related to planning procurement and contracting as well as securing revenue flows jel classification o13 o25 l94

policies and legislation driving taiwan s development of renewable energy abstract under the current wave of international responses to the growing threat of climate change taiwan cannot afford to step back from its goal of advancing its renewable energy strengthening its energy self sufficiency and energy security this paper will first analyze the high level dependency structure of taiwan s energy demands then we will explore taiwan current situation in terms of renewable energy development furthermore from an overview of the course of changes and development in taiwan s energy policy highlight the commitment to and aims of taiwan s renewable energy development made by the government at the annual national energy conference fourth we shall analyse technological r d incentives taxes market reforms and other related policy tools fifth in light of public announcements and budgets set in recent years for taiwan s renewable energy research plan highlight main strategies being given impetus by the government sixth the author will discuss the implications of recent significant legal reforms to the development of renewable energy in taiwan and from the correlating aspects of industrial structures and energy consumption take the first steps in emphasizing the urgent need for adjustments to be made to taiwan s industrial structure finally this paper will conclude by examining current policies legislation and strategies which are in place to promote this area in taiwan and discuss the potential competitiveness and future scenarios which the development of renewable energy could mean for taiwan

approaches to inequality of opportunity principles measures and evidence we put together the dierent conceptual issues involved in measuring inequality of opportunity discuss how these concepts have been translated into computable measures and point out the problems and choices researchers face when implementing these measures our analysis identies and suggests several new possibilities to measure inequality of opportunity the relevance of the conceptual issues and modelling choices are illustrated with ndings from the empirical literature on income inequality of opportunity

independent power projects in sub saharan africa investment trends and policy lessons abstract sub saharan africa is in urgent need of more power private sector investment is key to achieving this along with chinese funded projects independent power projects ipp represent the fastest growing sources of power investment in sub saharan africa ipp investment flows show little concern for electricity market structures but are more likely to gravitate to countries with strong planning procurement and contracting capacity as well as good regulatory quality data from the continent also shows a variety of ownership and financing structures for ipps but generally development financing institutions dfis play an important part in mitigating risk and bringing in private financiers we also see renewable energy breaking through on the continent both in scale and price this breakthrough is in part being facilitated by competitive procurement or auctions which deliver lower prices and increased transparency when compared with renewable energy feed in tariffs or directly negotiated contracts these developments have important policy implications highlighting the need for dynamic least cost planning linked to the timely initiation of the competitive procurement of new generation capacity the building of effective regulatory capacity and appropriate risk mitigation mechanisms such efforts promise to promote sustainable economic and social development across the continent

greening africa technologies endowments and the latecomer effect abstract africa is well endowed with potential for hydro and solar power but its other endowments shortages of capital skills and governance capacity make most of the green options relatively expensive while its abundance of hydro carbons makes fossil fuels relatively cheap current power shortages make expansion of power capacity a priority africa s endowments and the consequent scarcities and relative prices are not immutable and can be changed to bring opportunity costs in africa closer to those in the rest of the world the international community can support by increasing africa s supply of the scarce factors of capital skills and governance

cross country differences in intergenerational earnings mobility international studies of the extent to which economic status is passed from one generation to the next are important for at least two reasons first each study of a particular country characterizes an important feature of that country s income inequality second comparisons of intergenerational mobility across countries may yield valuable clues about how income status is transmitted across generations and why the strength of that intergenerational transmission varies across countries the e rst section of this paper explains a benchmark measure of intergenerational mobility commonly used in u s studies the second section summarizes comparable empirical e ndings that have accumulated so far for countries other than the united states the third section sketches a theoretical framework for interpreting cross country differences in intergenerational mobility

unfair inequalities in health and health care inequalities in health and health care are caused by different factors measuring unfair inequalities implies that a distinction is introduced between causal variables leading to ethically legitimate inequalities and causal variables leading to ethically illegitimate inequalities an example of the former could be life style choices an example of the latter is social background we show how to derive measures of unfair inequalities in health and in health care delivery from a structural model of health care and health production direct unfairness linked to the variations in medical expenditures and health in the hypothetical distribution in which all legitimate sources of variation are kept constant fairness gap linked to the differences between the actual distribution and the hypothetical distribution in which all illegitimate sources of variation have been removed these two approaches are related to the theory of fair allocation in general they lead to different results we propose to analyse the resulting distributions with the traditional apparatus of lorenz curves and inequality measures we compare our proposal to the more common approach using concentration curves and analyse the relationship with the methods of direct and indirect standardization we discuss how inequalities in health care can be integrated in an overall evaluation of social inequality

inequality of opportunity in sub saharan africa in the last decades inequality of opportunity has been extensively studied by economists on the assumption that in addition to being normatively undesirable it can be related to low potential for growth this paper evaluates inequality of opportunity and the different sources of unequal opportunities in 11 sub saharan africa countries the results indicate that the portion of total inequality that can be attributed to exogenous circumstances that is circumstances outside the control of individuals control is between 30 percent and 40 percent in the countries considered the results also indicate a positive association between total consumption inequality and inequality of opportunity finally this paper addresses a number of methodological issues that typically arise when measuring inequality of opportunity with imperfect data which is the typical case in developing countries

when is inequality fair an experiment on the effect of procedural justice and agency abstract we investigate how the perceived fairness of an income distribution depends on the beliefs about the process that generates the inequality specifically we examine how two crucial features of this process affect fairness views 1 procedural justice equal treatment of all 2 agency one s ability to determine his her income we do this in a lab experiment by differentially varying subjects ability to influence their earnings comparison of ex post redistribution decisions of total earnings under different conditions indicate both agency and procedural justice to matter for fairness highlighting the importance of agency we observe lower redistribution of unequal earnings resulting from risk when risk is chosen freely highlighting the importance of procedural justice we find introduction of inequality of opportunity to significantly increase redistribution despite this increase under inequality of opportunity the share of subjects redistributing none remain close to the share of subjects redistributing fully revealing an underlying heterogeneity in the population about how fairness views should account for inequality of opportunity

financing renewable energy in africa key challenge of the sustainable development goals abstract given the challenge of offering a development perspective to a rapidly growing population it might be tempting for africa to pursue a strategy of fueling growth with the cheapest source of energy available and take care of the environment later such an approach however would disregard the social cost of fossil fuels which the population would have to bear using the sustainable development goals as a benchmark for inclusive and sustainable growth we identify the synergy effects provided by renewable energy already substantial efforts of financing the additional cost of re are under way an analysis of possible leverage points available instruments and involved actors shows that there remains a large additional potential

individual preferences for political redistribution what drives people s support of governmental reduction of income inequality we employ data from a large international survey in order to evaluate the explanatory power of three competing forces referred to as the homo oeconomicus effect the public values effect and the social rivalry effect the empirical analysis reveals that at the aggregate level all three effects play a significant role in shaping individual preferences for political redistribution attitudes of citizens in formerly socialist countries turn out to differ from those of western citizens in a systematic way 2002 elsevier science b v all rights reserved

fair income tax fairness is a key concept in redistribution issues in this paper we study how particular requirements of fairness can shed light on the design of the optimal income tax schedule we consider a population of heterogeneous individuals or households who differ in two respects first they have unequal skills and therefore unequal earning abilities second they differ in terms of their preferences about consumption and leisure and as a consequence typically make different labour time choices both kinds of differences generate income inequalities we study how to justify and compute a redistribution income tax in this context redistribution through an income tax usually entails distortions of incentives but the resulting efficiency loss has to be weighed against potential improvements in the fairness of the distribution of resources we address this efficiency equity trade off here by constructing social preferences which obey the standard pareto principle in addition to fairness conditions

unveiling the ethics behind inequality measurement dalton s contribution to economics this article assesses the importance of dalton s 1920 paper in the economic journal for subsequent developments in income distribution analysis

measures of distributional change an axiomatic approach in recent years a number of interesting papers have appeared in the general field of the analysis of changes in a frequency distribution the most common applications of such analysis are in the areas of income and wealth re distribution and the contributions have usually focussed on a particular specialised issue such as mobility of individuals within a structure or of horizontal inequity as opposed to vertical inequality implicit in the comparison of two distributions a number of approaches to each of these problems have been suggested and indeed several specific practical indices of mobility or inequity have been proposed 1 whilst some of these can be shown to have very useful features in their application it is probably fair to say that most derive from an ad hoc approach to the particular aspect of the problem on which the author had focussed it is interesting to note that comparatively few papers attempt to exploit the similarities involved in each of these issues all this contrasts rather sharply with the state of play in an obviously closely related game that of the measurement of inequality much of the essential foundation of the problem of measuring inequality as we presently understand it seems to be more or less sorted out in a systematic fashion roughly speaking what may be done is as follows given

the causal effect of education on body mass evidence from europe we adopt a multi country setup to show that years of schooling have a causal protective effect on the body mass index of females living in nine european countries no such effect is found for males the protective effect for european females is not negligible but is smaller than one recently found for the united states and stronger among overweight females we discuss possible mechanisms justifying both the protective role of education and the gender difference in this role we argue that the effects of additional schooling on income the probability of employment and the frequency of vigorous physical activities both on and off the job may help explain our results

a review of learning rates for electricity supply technologies a variety of mathematical models have been proposed to characterize and quantify the dependency of electricity supply technology costs on various drivers of technological change the most prevalent model form called a learning curve or experience curve is a log linear equation relating the unit cost of a technology to its cumulative installed capacity or electricity generated this one factor model is also the most common method used to represent endogenous technical change in large scale energy economic models that inform energy planning and policy analysis a characteristic parameter is the learning rate defined as the fractional reduction in cost for each doubling of cumulative production or capacity in this paper a literature review of the learning rates reported for 11 power generation technologies employing an array of fossil fuels nuclear and renewable energy sources is presented the review also includes multi factor models proposed for some energy technologies especially two factor models relating cost to cumulative expenditures for research and development r d as well as the cumulative installed capacity or electricity production of a technology for all technologies studied we found substantial variability as much as an order of magnitude in reported learning rates across different studies such variability is not readily explained by systematic differences in the time intervals geographic regions choice of independent variable or other parameters of each study this uncertainty in learning rates together with other limitations of current learning curve formulations suggests the need for much more careful and systematic examination of the influence of how different factors and assumptions affect policy relevant outcomes related to the future choice and cost of electricity supply and other energy technologies

equality of opportunity theory and measurement during the last third of the twentieth century political philosophers actively debated about the content of distributive justice the ruling ethical view of utilitarianism was challenged by various versions of equality of opportunities economists formulated several ways of modeling these ideas focusing upon how individuals are placed with respect to opportunities for achieving various outcomes and what compensation is due to individuals with truncated opportunities after presenting a review of the main philosophical ideas section 2 we turn to economic models sections 3 and 4 we propose a reformulation of the definition of economic development replacing the utilitarian measure of gdp per capita with a measure of the degree to which opportunities for income acquisition in a nation have been equalized finally we discuss issues that the econometrician faces in measuring inequality of opportunity briefly review the empirical literature section 6 and conclude section 7

the cost of providing electricity to africa abstract sub saharan africa lacks electricity we estimate the cost of providing electricity to the region to do so we build an optimisation model that links the electricity demand to the supply and links the supply to the generation distribution and transmission of electricity between countries to the best of our knowledge such a model is novel in the literature we determine that the investment cost of providing electricity to sub saharan africa over a 10 year period is between 160 and 215 billion u s dollars depending on assumptions for electricity access and the cross country electricity trade although the electricity trade increases the investment cost estimate moderately it provides a high return to african countries and is cost efficient overall

addressing the renewable energy financing gap in africa to promote universal energy access integrated renewable energy financing in malawi abstract the sustainable energy for all initiative is a global initiative launched by the united nations secretary general in 2012 with a goal of providing universal access to modern energy services by 2030 to achieve this goal substantial financial and technological investments will be required at a rate far exceeding historical levels sub saharan africa has a 30 5 electrification rate and policy reform issues to improve electrification have been poorly implemented thereby sprinkling doubt as to whether the region would be able to achieve 100 access to electricity for all by the year 2030 sub saharan africa faces a tough challenge in order to achieve universal access to modern energy services since the region fails to attract energy sector investments there is also a general perception that the region contributes very little to global greenhouse gas emissions hence offers few opportunities to reduce these emissions consequently missing out on attracting climate finance projects a guarantee of power purchase has been shown to attract energy sector investments however guarantees of power purchases such as feed in tariffs are experiencing slow market growth in developing countries because of a range of technical regulatory and financial barriers using malawi as a case study of a developing country this review provides a perspective from a sub saharan africa least developed country as to the various electrification renewable energy deployment and climate change management challenges that still require urgent attention this study shows that despite the perceived regulatory and financial challenges malawi can integrate and use a combination of adapted price guarantee schemes cross subsidies and environmental taxes in order to support initiatives aimed at supporting the country s development of renewable energy sources and hence indirectly support the sustainable energy for all initiative

global policy of rural electrification energy poverty and lack of electricity in the rural area exacerbate the poverty of the developing countries the sustainable renewable technologies can be considered as efficient tools to reduce energy poverty whenever they are conducted based on an appropriate policy electricity can improve the human s lifestyle by increasing the level of health education welfare and technology currently sub sahara africa with only 14 2 of rural electrification has the first rank in the world with lowest access to electricity in that region around 585 million citizens has almost no access to electricity the present study focuses on the general global policies to electrify the rural areas in this regard variety of plans and programs conducted by governmental and private institutes are investigated in the year 2011 the international energy agency iea has developed three global strategies based on the world energy market that defines the overall world energy approach in the present work different technologies for rural electrification are taken into account in two major categories of grid connected and off grid systems furthermore based on sustainable development with emphasis on environmental consideration the feasibility of electrification by using different types of renewable energies such as solar biomass hydro wind and wave have been studied despite reliability of grid connection results indicate that renewable energy sources are the best choice especially in areas far from grid connections challenges between financial institutes and executive agencies result in resource management and technology development in order to overcome existing barriers and issues

on the measurement of inequality under uncertainty abstract to take into account both ex ante and ex post inequality considerations one has to deal with inequality and uncertainty simultaneously under certainty much of the literature has focused on comonotonically linear indices functionals that are linear on cones of income profiles that agree on the social ranking of the individuals this family generalizes both the gini index and the egalitarian index minimal income however it does not include functionals such as the average of expected gini and gini of expectation in contrast the family of min of means functionals is rich enough for this purpose journal of economic literature classification numbers d31 d63 d81

unequal uncertainties and uncertain inequalities an axiomatic approach abstract in this paper we provide an axiomatic characterization of social welfare functions for uncertain incomes our most general result is that a small number of reasonable assumptions regarding welfare orderings under uncertainty rule out pure ex ante as well as pure ex post evaluations any social welfare function that satisfies these axioms should lie strictly between the ex ante and the ex post evaluations of income distributions we also provide an axiomatic characterization of the weighted average of the minimum and the maximum of ex post and ex ante evaluations

more equal but less mobile education financing and intergenerational mobility in italy and in the us a centralised and egalitarian school system reduces the cost of education for poor families and so it should reduce income inequality and make intergenerational mobility easier in this paper we provide evidence that italy compared to the usa displays less income inequality as expected given the type of school system but also less intergenera tional upward mobility between occupations and between education levels we explore some of the reasons which can explain this puzzling result and conclude that in a world in which family background is important for labor market success a centralised and egalitarian tertiary education does not necessarily help poor children and may take away from them a fundamental tool to prove their talent and to compete with rich children 1999 elsevier science s a all rights reserved

economic growth and equality of opportunity the paper proposes an approach to understand the relationship between inequality and economic growth obtained by shifting the analysis from the space of final achievements to the space of opportunities to this end it introduces a formal framework based on the concept of the opportunity growth incidence curve this framework can be used to evaluate the income dynamics of specific groups of the population and to infer the role of growth in the evolution of inequality of opportunity over time the paper shows the relevance of the introduced framework by providing two empirical analyses one for italy and the other for brazil these analyses show the distributional impact of the recent growth experienced by brazil and the recent crisis suffered by italy from both the income inequality and opportunity inequality perspectives

electricity supply and demand scenarios for the southern african power pool abstract the study presents long term electricity supply and demand scenarios for the twelve countries in the southern african power pool based on detailed bottom up demand analysis for all countries and a set of internally consistent development scenarios total regional electricity demand and supply increase by eight to fourteen times from 2010 to 2070 with major shifts in both the sectoral composition of demand and the geography of demand with south africa becoming a much smaller share on the supply side the fuel mix shifts from coal and toward hydro in the medium term but towards other renewables such as solar in the longer term particularly in the scenarios with the fastest decline in capital costs for renewables this leads to declining unit carbon dioxide emissions in the more aggressive scenarios even though total power sector emissions still increase the unit cost of generation for the entire region is stable across all scenarios the potential transformation of the supply sector would require a fundamental shift in resource use grid management and infrastructure development in the region as well as greater regional integration this also implies significant institutional capacity development in the sapp coordination centre or similar structures for cooperative management of resources

a hierarchical cost learning model for developing wind energy infrastructures renewable energy has been increasingly promoted and used to substitute non renewable fossil fuels which cause negative effects on the environment the taiwan statute for renewable energy development has regulated and promoted renewable energy since 2009 a feed in tariff fit for renewable energy is one of the incentives that the government uses to promote the installation of green power generation facilities the price of the electricity feed in tariff is based on the current and future costs of renewable energy generation when analyzing cost trends for renewable energy installation many researchers use a single factor cost learning curve model however past studies indicate that there are multiple factors affecting the overall cost of installing renewable energy hence this research develops a hierarchical installation cost learning model which considers multiple factors to accurately model and forecast wind energy development this research uses wind power development data from taiwan as a case study we identify the cost factors evaluate the learning effects and compare the hierarchical learning curve model to the basic non hierarchical learning curve model the research results show an improved fit between the hierarchical model and the actual data when compared to the basic learning model the study also provides new insights between the wind power learning progression of taiwan and three countries in europe

measuring unfair in equality abstract this paper shows one way of generalizing the standard framework of inequality measurement to allow for a distinction between fair and unfair inequalities we introduce the unfairness lorenz curve and the unfairness gini which are generalizations of the standard versions of the lorenz curve and the gini with this more general framework in place we study the implications of responsibility sensitive theories of justice for the evaluation of the income distribution in norway from 1986 to 2005 we find that both the pre tax and the post tax income distributions have become less fair in norway even though the standard gini for the pre tax income distribution has decreased in the same period two trends explain this development the increase in income share of the top percentile and the change in the situation of females in the labor market the concentration of income at the top of the distribution contributes both to increased unfairness and increased inequality whereas the increase in females working hours and level of education primarily contributes to a reduction in inequality thus the latter effect dominates for the standard gini and the former effect for the unfairness gini furthermore we find that the increase in post tax unfairness is even larger than the increase in pre tax unfairness which shows that the tax system in norway contributes less to eliminating unfairness in 2005 than in 1986

three meanings of intergenerational mobility we axiomatize three different motivations for being concerned about intergenerational mobility mobility as a description of movement as an indication of equality of opportunity and as an indication of equality of life chances these three motivations are shown to be incompatible none of the existing measures is acceptable as an indicator of equality of opportunity or equality of life chances we propose two new measures of intergenerational mobility which more adequately reflect these concerns

measuring long term inequality of opportunity abstract in this paper we introduce a new family of rank dependent measures of inequality and social welfare consistent with the equality of opportunity eop principle the proposed framework can be used to measure long term as well as short term eop depending on whether we let permanent income or snapshots of income form the basis of the analysis furthermore it allows for both an ex ante and an ex post approach to eop there is long term ex post inequality of opportunity if individuals who exert the same effort have different permanent incomes in comparison the ex ante approach focuses on differences in the expected permanent income between groups of individuals with identical circumstances to demonstrate the empirical relevance of a long run perspective on eop we exploit a unique panel data from norway on individuals incomes over their working life span this allows us to examine how well analysis of opportunity inequality based on snapshots of income approximate the results based on permanent income

learning and process improvement during production ramp up abstract rapid product lifecycles and high development costs pressure manufacturing firms to cut not only their development times time to market but also the time to reach full capacity utilization time to volume the period between completion of development and full capacity utilization is known as production ramp up during that time the new production process is ill understood which causes low yields and low production rates this paper analyzes the interactions among capacity utilization yields and process improvement learning we model learning in the form of deliberate experiments which reduce capacity in the short run this creates a trade off between experiments and production high selling prices during ramp up raise the opportunity cost of experiments yet early learning is more valuable than later learning we formalize the resulting intertemporal trade off between the short term opportunity cost of capacity and the long term value of learning as a dynamic program the paper also examines the tradeoff between production speed and yield quality where faster production rates lead to more defects finally we show what happens if managers misunderstand the sources of learning

developments in non expected utility theory the hunt for a descriptive theory of choice under risk this article reviews recent developments in the economic theory of individual decision making under risk since the 1950s it has been known that individual choices violate the standard model of expected utility in predictable ways considerable research effort has now been devoted to the project of developing a superior descriptive model following an overview of non expected utility theories which distinguishes between conventional and non conventional approaches the paper seeks to assess these alternative models in terms of empirical success using laboratory and field data and theoretical usefulness the closing sections reflect on some new directions emerging in this literature

the landscape of energy initiatives in sub saharan africa going for systemic change or reinforcing the status quo abstract this article examines recent interventions by major players in sub saharan africa s energy sector and asks whether they acknowledge or seek to address energy as a complex problem and energy systems as socio technical systems several scholars have begun advocating the socio technical approach to energy by noting that the mainstream conceptualization of energy challenges in strictly technological or economic terms does not capture the complexity and inertia inherent to energy systems moreover the article also seeks to examine how well have recent interventions integrated pro poor and low carbon concerns two of the major tenets of un s sustainable development goal 7 findings suggest that initiatives studied take only partial consideration of key aspects of a socio technical approach to the energy problem nonetheless the initiatives have taken on board pro poor and low carbon concerns to a certain extent two main policy implications are drawn from this study a continued focus on status quo approaches has the potential to generate investment inefficiencies and an effective low carbon transition will require a broader discussions about the types of lifestyles people in sub saharan africa aspire to

preferences for redistribution in the land of opportunities this paper explores how individual preferences for redistribution depend on future income prospects in addition to estimating the impact of individuals socioeconomic background and of their subjective perceptions of future mobility we employ panel data to construct dobjectivet measures of expected gains and losses from redistribution for different categories of individuals we find that such measures have considerable explanatory power and perform better than dgeneral mobilityt indexes we also find that preferences for redistribution respond to individual beliefs on what determines one s position in the social ladder ceteris paribus people who believe that the american society offers equal opportunities are more averse to redistribution d 2004 published by elsevier b v

intergenerational earnings persistence and economic inequality in the long run evidence from french cohorts 1931 75 this paper analyses long term trends in intergenerational earnings persistence in france for male cohorts born between 1931 and 1975 this time period has witnessed important changes in the french labour market and educational system in particular an important compression of earnings differentials as well as a large expansion in access to secondary and higher education using a two sample instrumental variables approach i estimate two measures of intergenerational economic persistence the intergenerational earnings elasticity ige and the intergenerational correlation igc over the period the ige exhibits a v shaped pattern it falls from a high of value of 0 6 for cohorts born in the 1930s to around 0 4 for those born in the 1950s but subsequently rises to a level close to that at the beginning of the period in contrast the igc remains relatively stable over the period this suggests that changes in the ige are partly driven by transitory responses to changes in cross sectional inequality rather than long term changes in the degree of intergenerational persistence

ex ante inequality of opportunity in health decomposition and distributional analysis of biomarkers abstract we use a set of biomarkers to measure inequality of opportunity iop in the risk of major chronic conditions in the uk applying a direct ex ante iop approach we find that inequalities in biomarkers attributed to circumstances account for a non trivial part of the total variation for example observed circumstances account for 20 of the total inequalities in our composite measure of multi system health risk allostatic load we propose an extension to the decomposition of ex ante iop to complement the mean based approach analysing the contribution of circumstances across the quantiles of the biomarker distributions shapley decompositions show that for most of the biomarkers the percentage contribution of socioeconomic circumstances education and childhood socioeconomic status relative to differences attributable to age and gender increase towards the right tail of the biomarker distribution where health risks are more pronounced

robust inequality of opportunity comparisons theory and application to early childhood policy evaluation this paper develops a criterion to assess equalization of opportunity that is consistent with theoretical views of equality of opportunity we characterize inequality of opportunity as a situation

equity responsibility and the cultural dimension we present questionnaire studies concerning equity judgments based on an axiom that underlies rawls s difference principle our investigation spanning over a period of fifteen years was run at german austrian and slovenian universities we also modified two of our basic scenarios to check for responsibility aspects additionally we included information on socio demographic characteristics of respondents in a probit model answers depend on cultural environments but results indicate some convergence over time responsibility considerations are important if they can be attributed to particular persons although overall explanatory power of demographic attributes is low we observe significant gender differences

convergence of the south and non south income distributions 1969 1979 income distribution and inequalities in the southern united states are analyzed and compared with data for the rest of the country the evidence presented in this paper reveals that in the 1970s the souths income distribution either converged or moved significantly closer to the income distribution of the rest of the country the degree of convergence depends on the definition of the recipient unit and to a degree on the particular cost of living index used to deflate southern and non southern incomes the convergence is attributed in part to the labor unionization in the northeast and the resulting relocation of companies to the south data are from the 1970 and 1980 censuses and concern total household income excerpt

impact of political and economic barriers for concentrating solar power in sub saharan africa abstract sub saharan africa ssa needs additional affordable and reliable electricity to fuel its social and economic development ideally all of this new supply is carbon neutral the potentials for renewables in ssa suffice for any conceivable demand but the wind power and photovoltaic resources are intermittent and difficult to integrate in the weak electricity grids here we investigate the potential for supplying ssa demand centers with dispatchable electricity from concentrating solar power csp stations equipped with thermal storage we show that given anticipated cost reductions from technological improvements power from csp could be competitive with coal power in southern africa by 2025 but in most ssa countries power from csp may not be competitive we also show that variations in risk across countries influences the cost of power from csp more than variations in solar resources if policies to de risk csp investment to financing cost levels found in industrialized countries were successfully implemented power from csp could become cheaper than coal power by 2025 in all ssa countries policies to increase institutional capacity and cooperation among ssa countries could reduce costs further with dedicated policy measures therefore csp could become an economically attractive electricity option for all ssa countries

assessing risky social situations this paper reexamines the welfare economics of risk it singles out a class of criteria the expected equally distributed equivalent as the unique class that avoids serious drawbacks of existing approaches such criteria behave like ex post criteria when the final statistical distribution of well being is known ex ante and like ex ante criteria when risk generates no inequality the paper also provides a new result on the tension between inequality aversion and respect of individual ex ante preferences in the vein of harsanyi s aggregation theorem

to what extent do fiscal regimes equalize opportunities for income acquisition among citizens to what extent do fiscal regimes equalize opportunities for income aquisition among citizens journal of public economics

the inheritance of inequality how level is the intergenerational playing field what are the causal mechanisms that underlie the intergenerational transmission of economic status are these mechanisms amenable to public policies in a way that would make the attainment of economic success more fair these are the questions we will try to answer

unraveling the photovoltaic technology learning curve by incorporation of input price changes and scale effects in a large number of energy models the use of learning curves for estimating technological improvements has become popular this is based on the assumption that technological development can be monitored by following cost development as a function of market size however recent data show that in some stages of photovoltaic technology pv production the market price of pv modules stabilizes even though the cumulative capacity increases this implies that no technological improvement takes place in these periods the cost predicted by the learning curve in the pv study is lower than the market one we propose that this bias results from ignoring the effects of input prices and scale effects and that incorporating the input prices and scale effects into the learning curve theory is an important issue in making cost predictions more reliable in this paper a methodology is described to incorporate the scale and input prices effect as the additional variables into the one factor learning curve which leads to the definition of the multi factor learning curve this multi factor learning curve is not only derived from economic theories but also supported by an empirical study the results clearly show that input prices and scale effects are to be included and that although market prices are stabilizing learning is still taking place

an economic production and remanufacturing model with learning effects abstract managing inventory in reverse logistics has been receiving much attention in recent years one inventory problem that has been of interest to researchers is the production and remanufacturing model where used items are collected and remanufactured to satisfy customer demand the available models in the literature do not discuss the learning effects in production and remanufacturing processes this may not be true in industries where labour costs and learning costs are expensive by modelling these learning effects management may use established learning models to better utilize capacity manage inventories and coordinate production and distribution throughout the chain this paper extends the production remanufacture and waste disposal model by assuming learning to occur in both production and remanufacturing processes however this paper also assumes that improvements due to learning require capital investment mathematical models are developed numerical examples are provided and results are discussed

equality of opportunity policy and measurement paradigms abstract equality of opportunity is a widely accepted principle of distributive justice and it is the leading idea of most political platforms in several countries according to this principle a society might institute policies that secure an equal distribution of the means to reach a valuable outcome among its members once the set of opportunities have been equalized which particular opportunity the individual chooses from those open to her is outside the scope of justice ex ante inequalities and only those inequalities should be eliminated or compensated for by public intervention the recent literature on the opportunity egalitarianism often merges these questions introducing two different economic issues on one side the design of a public policy intended to implement the equality of opportunity view and on the other side the problem of measuring the degree of opportunity inequality in a society we describe the basic setting and assumptions of some different approaches derived by roemer s algorithm for public policy and then we discuss some theoretical and empirical studies to separate and test alternative paradigms on the measurement of inequality of opportunity accordingly an extended critique on the causality issue on policies and measurements is taken into account

equality of opportunity and luck definitions and testable conditions with an application to income in france abstract we offer a model of equality of opportunity that encompasses different conceptions expressed in the public and philosophical debates in addition to circumstances whose effect on outcome should be compensated and effort which represents a legitimate source of inequality we introduce a third factor luck that captures the random factors whose impact on outcome should be even handed for equality of opportunity to be satisfied then we analyze how the various definitions of equality of opportunity can be empirically identified given data limitations and provide testable conditions definitions and conditions resort to standard stochastic dominance tools lastly we develop an empirical analysis of equality of opportunity for income acquisition in france over the period 1979 2000 which reveals that the degree of inequality of opportunity tends to decrease and that the degree of risk of income distributions conditional on social origin appears very similar across all groups of social origins

long term trends in fair and unfair inequality in the united states abstractthis article analyses the microeconomic sources of wage inequality in the united states from 1967 2012 decomposing inequality into factors categorized by degree of personal responsibility education explains over twice as much of inequality today as 45 years ago however neither hours worked nor education industry marital status or geographical location can explain the rise in income inequality in fact unfair inequality income disparity derived from non responsibility factors has risen faster than fair inequality income disparity derived from responsibility factors regardless of the set of variables chosen as fair sources of inequality we further examine income inequalities within gender and racial groups finding substantial heterogeneity overall using micro data to understand the sources of inequality and how these changes over time can provide better information for policymakers motivated to combat rising inequality

is it fair to make work pay the design of the income transfer program for the lower incomes is a hot issue in current public policy debate should we stick to a generous welfare state with a sizeable basic income but high marginal tax rates for the lower incomes and thus little incentives to work or should we make work pay by subsidizing the work of low earners but possibly at the cost of a smaller safety net we think it is difficult to answer this question without making clear what individuals are held responsible for and what not first we present a new fair allocation coined a pareto efficient and shared resources equivalent pese allocation which compensates for different productive skills but not for different tastes for working we also characterize a fair social ordering which rationalizes the pese allocation second we illustrate the optimal second best allocation in a discrete stiglitz 1982 1987 economy the question whether we should have subsidies for the low earners or not crucially depends on whether the low skilled have a strictly positive or zero skill third we simulate fair taxes for a sample of belgian singles our simulation results suggest that making work pay policies can be optimal according to our fairness criterion but only in the unreasonable case in which none of the unemployed are ever willing to work

ex ante versus ex post equality of opportunity we study the difference between the ex post and ex ante perspectives in equality of opportunity we show that the well documented conflicts between compensation and reward are but an aspect of a broader conflict between ex ante and ex post perspectives the literature that takes the goal of providing equal opportunities as the guiding principle generally considers that this is implemented only when ex post all individuals with the same effort obtain equal success it is easy to believe that ex ante compensation is another natural embodiment of the same idea we show that this is not true