natural resources curse or blessing are natural resources a curse or a blessing the empirical evidence suggests that either outcome is possible this paper surveys a variety of hypotheses and supporting evidence for why some countries benefit and others lose from the presence of natural resources these include that a resource bonanza induces appreciation of the real exchange rate deindustrialization and bad growth prospects and that these adverse effects are more severe in volatile countries with bad institutions and lack of rule of law corruption presidential democracies and underdeveloped financial systems another hypothesis is that a resource boom reinforces rent grabbing and civil conflict especially if institutions are bad induces corruption especially in nondemocratic countries and keeps in place bad policies finally resource rich developing economies seem unable to successfully convert their depleting exhaustible resources into other productive assets the survey also offers some welfare based fiscal rules for harnessing resource windfalls in developed and developing economies

the effect of experience and quantity based pricing on the valuation of a curbside recycling program abstract quantity based pricing for garbage collection services and recycling programs are becoming increasingly popular methods of meeting municipal solid waste diversion objectives this article investigates household willingness to pay wtp for a pilot curbside recycling program crp in the presence of a quantity based pricing scheme for garbage collection services which allows a household to alter their garbage container size at a reduced price unlike previous studies that have modeled the simultaneity of these household decisions as a two step process we jointly estimate the household s intentions using a full information maximum likelihood fiml approach our results show a strong positive correlation between a household s wtp for a crp and its stated intention to reduce its garbage container size when a crp is offered the positive correlation suggests that wtp will be higher for households which are more likely to reduce their garbage container size thus in the presence of quantity based pricing a household s wtp for recycling more fully reflects the marginal social costs of garbage disposal

constant consumption as interest on capital we consider the concepts of aggregate capital value arising in solow s constant consumption model for a traditional concept we establish consumption as interest on wealth in the sense of the interest flow being the vector product of weighted current values of capital stocks and own interest rates consumption can be viewed as maximum sustainable net product i introduction there is a presumption that net investment zero a generalization of investing exhaustible resource rents as in hartwick 1977 must be associated with preserving capital intact see dixit hammond hoel 1980 in fact solow 1986 set this argument out in some detail maintaining capital intact seems like a reasonable prescription for sutainable development elsewhere sustainable development has been tied to non declining consumption following solow s 1974 constant consumption model 2 there are at least two candidates for capital in maintaining capital intact that can be associated with solow s 1974 constant consumption model the two were present in solow 1986 i mention them below and analyze a new approach to linking constant consumption to capital value as in consumption is interest on capital our approach is to make all inputs in current production flows from explicit stocks in this extended solow 1974 model we observe a aggregate consumption constant under zeronet investment and b constant consumption is interest on capital in the sense n

selfish bakers caring nurses a model of work motivation abstract work contributes to people s self image in important ways we propose a model in which effort is unobservable and where individuals have a preference for being important to others this gives the following predictions 1 if a worker s effort is paid by his marginal productivity bakers effort is just like in the standard model 2 if a worker s wage is unaffected by his effort nurses more effort is provided than in the standard model 3 to prevent that shirkers become nurses nurses wages must be kept strictly lower than bakers income at this wage level there will be too few nurses 4 overinvestment in nursing equipment can be justified as a means to attract motivated nurses 5 even with full income compensation both nurses and bakers may experience a net utility loss when losing their job 6 similarly both nurses and bakers may prefer work to welfare even with full income compensation

voracious transformation of a common natural resource into productive capital i analyze a power struggle where competing factions have private financial assets and deplete a common stock of natural resources with no private property rights i obtain a feedback nash equilibrium to the dynamic common pool problem and obtain political variants of the hotelling depletion rule and the hartwick saving rule resource prices and depletion occur too fast so substitution away from resources to capital occurs too fast and the saving rate is too high the power struggle boosts output but depresses sustainable consumption genuine saving is nevertheless zero in a fractionalized society world bank estimates may be too optimistic

the curse of natural resources in fractionalized countries abstract this paper develops a model that can explain why natural resources are a blessing for some countries but a curse for others in this model natural resources cause fighting activities between rivalling groups fighting reduces productive activities and weakens property rights making productive activities even less attractive the aggregate production decrease exceeds the natural resources direct positive income effect if and only if the number of rivalling groups is sufficiently large the model thus predicts that natural resources lower incomes in fractionalized countries but increase incomes in homogenous countries empirical evidence supporting this prediction is provided

woodsy the optimal owl environmental campaigns norms and implications for public goods policy norms regarding private provision of a public good e g cutting down on energy use not littering can affect the marginal gains from contributing to a public good and therefore people s decisions about contributing to the public good a model is proposed in which norms of private contributions to a public good can be influenced by public policy and these norms affect people s self image which derives from a comparison of one s own contribution with the norm contribution in this context we examine the conditions under which private contributions to a public good are efficient and the conditions under which policy affecting these norms improves social welfare we find that 1 a benevolent social planner who fails to account for private provision norms will underprovide the public good and 2 public policy that attempts to raise the norm contribution of private provision can increase social welfare if the effect of raising the norm does not have an extreme negative effect either extremely small or extremely large on peoples self image

net national product as a welfare indicator the question of whether changes in net national product nnp will measure changes in welfare is investigated in this paper m weitzman 1976 demonstrated that under specific conditions nnp is proportional to discounted consumption the result requires nnp to be measured in current prices in utility units changes in real nnp measured using given prices from a base year will not represent a complete account of welfare changes copyright 1994 by the editors of the scandinavian journal of economics

the net national product and exhaustible resources the effects of foreign trade abstract it is the widely held view that estimates of national income should be corrected for the value of the extracted exhaustible resource stock this correction implies the counter intuitive result that the national income of an oil producer is unaffected by its vast oil reserves in this paper we review the definition of national income and discuss its relation to national welfare we show that an extra income should be imputed to the resource owning country based on the exportable resource stock part of the net adjustment for resource use is made to the income of the resource using and not the resource producing country

wealth and sustainability for economists in 1974 it was a live question whether the exhaustion of natural resources such as oil would necessarily lead to the decline of economic activity solow showed that constant levels of consumption could be sustained in the face of exhaustibility if there is sufficient substitutability between produced and natural factors of production hartwick then proved that underpinning this result is a saving rule set investment in produced capital equal to the value of resource depletion at each point in time a large literature has shown that a comprehensive measure of the change in real wealth net saving plays a central role in determining whether current well being can be sustained in particular current declines in real wealth signal that future well being will also decline a result that has been confirmed empirically using data for developing countries changes in wealth and sustainability are therefore joined at the hip the current composition of wealth serves to define the policy challenges that countries face in achieving sustainable development if substitution possibilities are limited between natural and other factors of production as one might expect then technical progress is a necessary complement to policies for sustainability

savings growth and the path of utility we derive an expression relating the change in instantaneous utility to the growth of net genuine saving in an economy with multiple stocks and externalities that maxi mizes welfare in the utilitarian sense this result is then shown to hold for decentralized competitive efficient economies as well to yield an extension of the hartwick rule instan taneous utility is non declining along a development path if genuine saving is decreasing by way of example the rule is applied as a constant genuine saving rate rule in a simple dasgupta heal solow stiglitzeconomy the rule yields a path with unbounded consump tion and higher wealth than on the standard hartwick constant consumption path jel classification q01 q56 o13

does nnp growth indicate welfare improvement abstract we show that instantaneous increases in real nnp over time are an accurate indicator of true dynamic welfare improvements this highlights a connection between the theory of green or comprehensive national income accounting and the theory of real price indices

the assumption of equal marginal utility of income how much does it matter abstract in most applied cost benefit analyses individual willingness to pay wtp is aggregated without using explicit welfare weights this can be justified by postulating a utilitarian social welfare function along with the assumption of equal marginal utility of income for all individuals however since marginal utility is a cardinal concept there is no generally accepted way to verify the plausibility of this latter assumption nor its empirical importance in this paper we use data from seven contingent valuation studies to illustrate that if one instead assumes equal marginal utility of the public good for all individuals aggregate monetary benefit estimates change dramatically

robustness of capacity rationing policies a recent paper discusses a capacity rationing policy that allows make to order manufacturing firms encountering expected total demand in excess of available capacity to discriminate between two classes of products one yielding a higher profit contribution per unit of capacity allocated to it than the other the result is a selective rejection of orders for the class with lower unit contribution yielding an increase in total profit when compared to a base case that implements no capacity rationing implementation of the policy requires forecasts of demand parameters for both product classes in this paper we test the sensitivity of the capacity rationing policy to forecast errors in these parameters the results indicate that on average the rationing policy is quite robust in improving profit even when actual demands are approximately twenty percent different from forecast values

the concept of income in a general equilibrium this paper derives a concept of aggregate real income for a competitive economy in general equilibrium consisting of heterogeneous infinitely lived people and relates it to current and future consumption possibilities an important characteristic of our measure of income which we call real income is that deflation is carried out using a consumption deflator rather than any price index of output we suggest that it may be inappropriate to regard capital gains as income we also present a coherent treatment of the effects of changes to the terms of trade on real income and explain the implications of this for resourceexporting economies hicks 1939 defined income as the maximum amount a man can spend and still be as well off at the end of the week as at the beginning since then there has been a succession of attempts to apply this definition the problem is as hicks acknowledged that the correct interpretation of as well off is by no means clear weitzman 1976 and asheim 1997 suggest that income is equal to the level of consumption which could be sustained indefinitely out of the capitalized value of current income and equate this to being as well off at the end of the week as at the beginning eisner 1988 argues specifically that in a total incomes system effects arising from asset price changes and conventionally regarded as capital gains should be included with income here building on earlier work by sefton and weale 1996 asheim and weitzman 2001 and pemberton and ulph 2001 we provide a comprehensive account of the implications of the idea that as well off should be understood to mean that the present discounted value of current and future utility should be unchanged over the interval considered we work in the context of a general equilibrium taking the prices established in the general equilibrium as given we first look at income from the production side showing that in an economy where prices and the interest rates satisfy an intertemporal efficiency condition income along an equilibrium path can be interpreted as a weighted average of the value of the current and future consumption bundle plus a term adjusting for changes in the nominal price level converting prices to real prices by deflating by the divisia consumption price index removes the need for this adjustment these results are suggestive first they offer a way of defining the income of a household entirely in terms of its consumption possibilities second they indicate that to calculate real income deflation is best carried out using a price index of consumption this is a substantial divergence from current national accounting practice third because we have assumed constant returns there is a trivial aggregation result that aggregate income is equal to the sum of the incomes from the individual sectors

the voracity effect abstract we analyze an economy that lacks a strong legal political institutional infrastructure and is populated by multiple powerful groups powerful groups dynamically interact via a fiscal process that effectively allows open access to the aggregate capital stock in equilibrium this leads to slow economic growth and a voracity effect by which a shock such as a terms of trade windfall perversely generates a more than proportionate increase in fiscal redistribution and reduces growth we also show that a dilution in the concentration of power leads to faster growth and a less procyclical response to shocks jel f43 o10 o23 o40

capacity rationing decision procedures with order profit as a continuous random variable abstract when expected demand is more than available capacity a make to order manufacturer should take the more profitable orders and reject the less profitable orders in order to better allocate its limited capacity and maximize its profit however various orders will arrive at different times in the future so the manufacturer cannot look at all the order inquiries at the same time and choose the most profitable ones when an order inquiry arrives the manufacturer must promptly determine without knowing exactly what the future orders might be whether to accept the order or to reject the order thus reserving the capacity for future more profitable orders this study focuses on such an order selection decision problem under the following assumptions 1 the arrival of future customer orders is a poisson process 2 the capacity requirement of a future customer order is a continuous random variable and 3 the profit per unit capacity used by an order is also a continuous random variable under the stochastic problem assumptions this study investigates two decision procedures that determine whether to accept or to reject an order inquiry based on the available information including 1 current available manufacturing capacity 2 capacity requirement by the order and 3 the profit per unit capacity of the order one procedure is called static probability capacity rationing decision procedure spcr the other one is called dynamic stochastic capacity rationing decision procedure dscr simulation experiments are conducted to validate the proposed procedures an optimal solution method that uses 0 1 knapsack problem formulation to obtain the decisions with perfect information is used to measure the effectiveness of the proposed procedures the results show that the approach utilizing dscr outperforms other approaches by providing the highest profit and is also very robust under various problem conditions

genuine savings and sustainability genuine savings gs has emerged as the leading economic indicator of sustainable economic development at the country level it derives from the literatures on weak sustainability wealth accounting and national income accounting we discuss the theoretical underpinnings of gs focusing on the relationship between changes in a nation s extended capital stock and the future path of consumption the indicator has entered widespread use propelled by the world bank s publications despite its varying performance as a predictor for future consumption notwithstanding the extensive body of literature reviewed promising future research avenues are identified

capital accumulation and resource depletion a hartwick rule counterfactual how rich would resource abundant countries be if they had actually followed the hartwick rule invest resource rents in other assets over the past 30 years the authors use time series data on investments and rents on exhaustible resource extraction for 70 countries to answer this question the results are striking gabon trinidad and tobago and venezuela would all be as wealthy as the republic of korea while nigeria would be five times as well off as it is currently the authors also derive a more general rule for sustainability maintain positive constant genuine investment and use this to draw further empirical results

an economic analysis of household recycling of solid wastes the case of portland oregon abstract solid waste is one of the residuals generated by economic activities faced with rising disposal costs communities are implementing programs to encourage recycling activities this paper investigates the role of price incentives and other socio economic factors in household recycling participation in recycling is modeled as an ordered probit choice using a large sample of households from the portland oregon metropolitan area demand for solid waste collection is estimated using two stage least squares results indicate that increases in disposal fees encourage recycling although demand for solid waste collection services is not reduced substantially

project analysis as input to public debate environmental valuation versus physical unit indicators abstract monetary valuation of environmental change is useful if one aims to rank alternative projects according to some specific social welfare function however if the project analysis is intended as background information to a democratic debate the advantages of monetary valuation are less obvious this paper analyzes aggregation of information taking normative disagreement explicitly into account it is demonstrated that monetary valuation is not always more informative than a physical unit measure of environmental change

adjusting green nnp to measure sustainability weitzman provides a foundation for nnp as the stationary equivalent of a wealth maximizing path when there is a constant interest rate and no exogenous technological progress here the implications of weitzman s foundation are explored in a case encountered in resource models i e the case of non constant interest rates in a setting that allows for exogenous technological progress an expression for nnp is obtained that adjusts green nnp for anticipated capital gains and interest rate effects to produce a measure that indicates sustainability this result is important when measuring the relative sustainability of resource rich and resource poor countries i introduction how should net national product nnp be adjusted for the depletion of natural and environmental resources a prerequisite for examining this problem is to decide on an underlying notion of income at the personal level hicks 1946 defines income as the consumption that if kept constant would yield the same present value as a person s actual future receipts since market prices are not influenced by any single person this notion of income equals a person s maximal sustainable consumption at the national level national income can likewise be defined as the consumption that if kept constant would yield the same present value as the actual future consumption path unless the nation is a small open economy faced with given international prices this notion of national income will exceed

household responses to pricing garbage by the bag this paper estimates household reaction to the implementation of unit pricing for the collection of residential garbage we gather original data on weight and volume of weekly garbage and recycling of 75 households in charlottesville virginia both before and after the start of a program that requires an eighty cent sticker on each bag of garbage this data set is the first of its kind we estimate household demands for the collection of garbage and recyclable material the effect on density of household garbage and the amount of illegal dumping by households we also estimate the probability that a household chooses each method available to reduce its garbage in response to the implementation of this unit pricing program we find that households 1 reduced the weight of their garbage by 14 2 reduced the volume of garbage by 37 and 3 increased the weight of their recyclable materials by 16 we estimate that additional illegal or at least suspicious disposal accounts for 0 42 pounds per person per week or 28 of the reduction in garbage observed at the curb this abstract was borrowed from another version of this item

altruism moral norms and social approval joint determinants of individual offset behavior we provide a theoretical and empirical analysis of individual offset behavior with environmental offsets as a specific form of voluntary public good provision while existing theoretical models on the voluntary provision of public goods usually focus exclusively on single motivations for individual contributions we explicitly account for various motivations in a unified framework drawing on theories for public good provision such as pure and impure altruism internalized norms and social approval such an approach is particularly useful when individual offset behavior is heterogeneous the applicability of our theoretical framework is supported by data from a choice experiment on voluntary carbon offsetting in switzerland and the usa we find that willingness to pay for offsets mainly depends on an individual s internalized norms to avoid environmental degradation as well as partly on income the probability to offset instead is better explained by an individual s expected social recognition for offsetting

recycling social norms and warm glow revisited we examine the role of social norms and warm glow in a theoretical framework and establish that improving the quality of recycling facilities for example through kerbside collection will elicit more recycling effort if warm glow is present drawing on the literature we model the role of social norms with reference to age profile ethnicity and geographical location of the reference group using english local authority data we show that a social norm for recycling does exist we find the expected relationship between the quality of kerbside provision and recycling activity if the household derives warm glow from the activity however it is insignificant amongst the control variables we find evidence that multifamily dwellings recycle less

incorporation of risk in regional forest resource accounts abstract to be an appropriate indicator of sustainability a net income measure projected into the future should consider risk several authors have demonstrated how risk can be formally incorporated into welfare measures like green net national product nnp however the resulting measure can be considerably more complex than its deterministic counterpart a practical alternative to formally incorporating risk is to use simulations of the type outlined in this paper to provide information about the expected impact of risk this information can be used to apply a stochastic version of a sustainability rule that requires that the expected value of net income be non declining this paper discusses the importance of risk and uncertainty to welfare measurement and more specifically the measurement of net income from forest services in a region of northern alberta two different approaches to valuing resource extraction are compared the depreciation approach and the wealth based approach provide very different projections of net income we demonstrate that when a renewable resource is subject to risk the wealth based approach provides a more appropriate measure of the influence of resource use on future consumption possibilities and the sustainability of net income

increasing returns and the genesis of american resource abundance the usa became the world s leading mineral producing nation between 1870 and 1910 a development paralleled by the rising resource intensity of american manufacturing this paper challenges the premise that resource abundance simply reflected the country s geological endowment of mineral deposits instead in the century following 1850 the usa exploited its natural resource potentials to a far greater extent than other countries and did so across virtually the entire range of industrial minerals the paper argues that natural resource abundance was an endogenous socially constructed condition that was not geologically preordained it examines the complex legal institutional technological and organizational adaptations that shaped the us supply responses to the expanding domestic and international industrial demands for minerals and mineral products it suggests that strong positive feedbacks even in the exploitation of depletable resources were responsible for the explosive growth of the american minerals economy

the economics of household solid waste generation and disposal abstract we develop a household production model of waste management that explicitly incorporates many of the technical and behavioral elements germane to current regulatory and non regulatory solid waste policy initiatives examination of first order conditions shows the interaction among household preferences these production options and external prices and fees a simplified simulation of our model illustrates these relationships showing that household response elasticities can vary widely over common price ranges and that relatively large household welfare gains may be obtained by adopting curbside recycling and unit pricing programs

voting for environmental policy under income and preference heterogeneity we examine the design of policies for promoting the consumption of green products under preference and income heterogeneity using organic food products as an example two instruments are considered a price subsidy for the organic food products and a tax on the conventional products under income disparity consumers with high income always prefer a socially optimal subsidy to a socially optimal tax while low income consumers prefer a tax on conventional products when environmental policy is determined by the median voter the policies implemented tend to be stricter than socially optimal policies if income differences are large

evaluating projects and assessing sustainable development in imperfect economies we are interested in three related questions 1 how should accounting prices be estimated 2 how should we evaluate policy change in an imperfect economy 3 how can we check whether intergenerational well being will be sustained along a projected economic programme we do not presume that the economy is convex nor do we assume that the government optimizes on behalf of its citizens we show that the same set of accounting prices should be used both for policy evaluation and for assessing whether or not intergenerational welfare along a given economic path will be sustained we also show that a comprehensive measure of wealth computed in terms of the accounting prices can be used as an index for problems 2 and 3 above the remainder of the paper is concerned with rules for estimating the accounting prices of several specific environmental natural resources transacted in a few well known economic institutions

capital gains and net national product in open economies it is shown within a given framework that with the world economy following an egalitarian path the aggregate capital gains being positive is equivalent to the interest rate tending to decrease this result is of importance for the concept of net national product in open economies in particular with positive aggregate capital gains an open economy cannot sustain consuming the return on its capital stocks since some part of the return must be used to augment the country s national wealth it is established that a country s share of world wide sustainable consumption equals its share of worldwide wealth

the cold shiver of not giving enough on the social cost of recycling campaigns governments sometimes try to increase individuals contributions to public goods through appeals to consumer responsibility rather than by economic incentives for example in recycling campaigns using standard consumer theory one would hardly expect such campaigns to work at all but if consumers are motivated by norms appeals may work through changing consumers perception of the normrequirement however increasing voluntary contributions through appeals may come at a social cost the reason is that appeals work through imposing a heavier perceived responsibility on consumers this represents a welfare loss which is not necessarily outweighed by warm glow benefits

capital gains and income arising from nonrenewable resources should capital gains be included in income arising from nonrenewable resources in the present paper i show that capital gains from a nonrenewable resource can be divided into two terms real price change effects and real interest rate change effects by application of sectoral income theory developed by asheim and wei environ res econ 42 65 87 2009 only the former term is part of real income of the resource and the latter term should not be included this result is significant in the sense that all change in real resource wealth can be included as part of real income only if future real interest rates are assumed to be constant hotelling rule always implies that capital gains from nonrenewable resources coincide with real interests on resource wealth net investment generated from the resource cancels out current cash flow from the resource and real income comes from price change effects

resource depletion and sustainability in small open economies abstract exogenous price changes affect the amount that a small country exporting natural resource commodities must invest to sustain its consumption level the necessary amount is given by the difference between hotelling rent and the discounted sum of future terms of trade effects capital gains the latter term is found to be large relative to the former in the case of petroleum depletion in indonesia this suggests that resource rich countries will need to invest more than previously expected to sustain their consumption levels if natural resource prices continue their long term historical decline

the cost of soil erosion in nicaragua the cost of soil erosion is not so much dependent on the physical amount of soil lost as determined by the economic effects of these losses soil erosion has both onsite and offsite effects loss of soil productivity is the main onsite effect while enhanced productivity of downstream land sedimentation and eutrophication of waterways and reservoirs are common offsite effects in this paper we consider only the onsite effects of erosion the loss of agricultural productivity is however studied within a broader economic framework than usual by incorporating the direct economic effects of soil loss into a general equilibrium model it is possible to shed light on some of the many interlinkages between agricultural activity and other parts of the economy which are important for determining the social cost of soil erosion based on model simulations we find that soil erosion represents a considerable drag on the nicaraguan economy but that the burden of soil erosion depends on conditions and policies in non agricultural markets such as the labour market furthermore the sharing of the burden is not always to the disadvantage of the peasants while uncertainties in data and modelling prevent us from drawing strong conclusions the present study underlines the importance of considering the overall economic environment when policy proposals for mitigating excessive soil erosion is formulated

airline seat allocation with multiple nested fare classes this paper addresses the problem of determining optimal booking policies for multiple fare classes that share the same seating pool on one leg of an airline flight when seats are booked in a nested fashion and when lower fare classes book before higher ones we show that a fixed limit booking policy that maximizes expected revenue can be characterized by a simple set of conditions on the subdifferential of the expected revenue function these conditions are appropriate for either the discrete or continuous demand cases these conditions are further simplified to a set of conditions that relate the probability distributions of demand for the various fare classes to their respective fares the latter conditions are guaranteed to have a solution when the joint probability distribution of demand is continuous characterization of the problem as a series of monotone optimal stopping problems proves optimality of the fixed limit policy over all admissible policies a comparison is made of the optimal solutions

the effects of neighbour influence and cultural consumption on separate waste collection theoretical framework and empirical investigation abstract separate waste collection swc is a policy priority for eu countries this work investigates the effect of neighbour influence and cultural consumption on municipal swc with a twofold focus first it outlines a simple theoretical framework where the motivations underlying pro environmental behaviours are influence by neighbour effects and cultural consumption second it tests the theoretical results implementing a quantile regression on italian municipal data for 2012 the results confirm that neighbours influence each other while different cultural goods produce different effects these findings indicate that the cultural policy may play a relevant role in tackling environmental issues

heterogeneous preferences for community recycling programs this paper examines household preferences for community recycling programs which have both public and private good dimensions the data come from a survey conducted in seattle wa which elicited stated preference contingent ratings for different recycling programs relative to status quo with experimental variation in the overall community recycling rate achieved and expected household cost the recycling rate is interpreted as capturing the public benefits of recycling programs and constitutes the most common measure used by policy agencies for setting waste management objectives and evaluating policy initiatives the analysis begins with fixed parameter models that explore different ways of handling rating data and mixed logit estimations that capture household preference heterogeneity both within and across different recycling programs this analysis yields unique estimates of willingness to pay for an increase in the community recycling rate predicted individual specific utility parameters are then regressed on household background information to explicitly examine the nature of preference heterogeneity overall this paper generates interpretable policy relevant insights into the public and private good dimensions of community recycling programs

corruption and the political economy of resource based development a comparison of asia and sub saharan africa we model how the supply and demand for bribes affects resource use by an economy and the reinvestment of resource rents in other assets this requires adjusting the world bank s measure adjusted net savings for any rent dissipation due to corruption the impacts of corruption on long run changes and periodic growth in the adjusted net savings rate are estimated across african and asian economies from 1970 to 2003 corruption rather than resource dependency per se affects negatively the ability of african countries to reinvest resource rents in the short term but for asian countries corruption is less important than point resources corruption influences long run growth in adjusted net savings rates in all countries and is also the pathway through which this growth is affected by patterns of resource use trade and abundance

hartwick s rule in open economies to sustain constant consumption the hartwick rule prescribes reinvesting all resource rents in reproducible capital this paper shows that the rule does not apply to open economies since the underlying stationary technology assumption is violated when gains from trade are taken into account a correct analog to the hartwick rule for open economies is developed and applied to a model of capital accumulation and resource depletion la regle de hartwick dans les e conomies ouvertes pour maintenir la consommation constante la regle de hartwick prescrit qu il faut reinvestir toutes les rentes des ressources dans du capital reproductible ce me moire montre que la regle ne s applique pas dans le cas d economies ouvertes parce que le postulat d une technologie stationnaire n9est pas satisfait quand on tient compte des gains engendres par le commerce international l auteur developpe une version correcte pour les economies ouvertes dans 1 esprit de la regle de hartwick et l applique a un modele d accumulation de capital et d epuisement des ressources

robust optimal decisions with stochastic nonlinear economic systems abstract optimal decisions for nonlinear systems are usually computed on the basis that certainty equivalent decisions are sufficiently accurate this premise is tested in the present paper using an approach that evaluates using monte carlo simulations any expectations bias that nonlinearities may introduce optimal decisions are determined by incorporating this bias with a robust decision formulation the expected value of the policy objective function is optimized simultaneously with the sensitivity of the problem to given sources of uncertainty in the model numerical results based on the national institute of economic and social research model of the uk economy are used to highlight two specific points the first is that robust decision performs better than simple certainty equivalent deterministic decision and that increased robustness makes the policy more risk averse the second point is that the bias due to the nonlinearity of the model is significant in terms of the policy and the endogenous variables

discrete order admission atp model with joint effect of margin and order size in a mto environment abstract swarming demands and seasonality periodically induce a stringent capacity problem in the made to order mto b2b environment desirable order admission is a tactic with minimal application cost for handling this problem a real time order admission problem with limited major customer population and batch size demand with heterogeneous distributions is modeled as a dynamic and stochastic knapsack problem the optimality of the markovian deterministic reward threshold policy is verified optimal policy basic policy and the capacity rationing method are compared in the designed experiment the numerical results suggest great potential for increasing profit using the optimal order admission policy for mto businesses

household behavior under alternative pay as you throw systems for solid waste disposal in 1994 residents of marietta georgia participated in a pay as you throw solid waste demonstration project rather than pay a fixed monthly fee for collection half of the resi dents paid a fee per reusable trash can and half paid for each nonreusable trash bag collected data from both a sample of households and city wide totals indicate that the programs signifi cantly reduced waste set outs even after account ingfor increases in unpriced recycling the bag program caused larger reductions 36 than the subscription can program 14 rough esti mates of the program indicate both savings for residents and social welfare increases jel q20

social norms morals and self interest as determinants of pro environment behaviours the case of household recycling this paper considers the role which selfish moral and social incentives and pressures play in explaining the extent to which stated choices over pro environment behaviours vary across individuals the empirical context is choices over household waste contracts and recycling actions in poland a theoretical model is used to show how cost based motives and the desire for a positive self and social image combine to determine the utility from alternative choices of recycling behaviour we then describe a discrete choice experiment designed to empirically investigate the effects such drivers have on stated choices a hybrid logit model is used to link statements over attitudes to recycling to choices dealing with a potential endogeneity problem caused by the joint effects of un observables on attitudes and choices we find that a substantial share of our respondents prefer to sort their waste at home rather than in a central sorting facility this preference is associated with a moral intrinsic motivation involving a belief that sorting at home is more thorough than central sorting

an appropriate mechanism of fuels pricing for sustainable development abstract in this work the authors after a brief outlook concerning the markets of main energy commodities propose an alternative mechanism for fuel pricing consisted with a sustainable development technological change and technological pluralism costs and environmental issues are the benchmarks of the discussion developed the two mechanisms here proposed for fuel pricing try to encompass all these aspects stressing the scarcity concern not only under a merely based resource point of view but emphasizing also the technological variable as the first one to take into consideration in fact technology the mean by which resources are transformed into usable services energy forms is strictly linked to its limits above all productivity efficiency and environmental effects and cannot be any more considered only following the classical principles of the lowest cost of utilization without evaluating the other aspects related to the goals of sustainable development widely shared at the international level furthermore taking into consideration that some estimates of petroleum life expectancy calculate about 40 50 yr of consumption at current rates of demand a new mechanism to consider the right value of this resource and consequently all energy commodities is necessary without any pretension of exhaustion of the topic this work seems to be in line with this perspective trying to apply all these principles to price fuels

the divisive and disruptive effect of a weight based waste fee abstract the ability of economic incentives to promote environmentally friendly behavior has been questioned in the literature most studies investigating this issue are grounded in the agent based rational choice model the aim of this study is to expand our insights by applying an alternative theoretical framework combining elements from classical institutional economics and self determination theory to study incentives for waste sorting the analysis is based on data from a norwegian municipality ulstein which introduced and later terminated a differentiated waste fee there are three main findings first the important role of normative motivation for sorting household waste is confirmed second the economic incentive had a divisive effect on the motivation to sort household waste perceived autonomy linked to fundamental values about environmental concern seems to play an important role in explaining why half the sample reports no extra efforts in sorting waste as a response to the economic incentive the other half was influenced by the external logic given to them i e to save costs and hence report increased motivation to sort household waste finally an increased practice of illegal waste disposal was observed as a response to the differentiated waste fee

investing exhaustible resource rents and the path of consumption we set out dollar valued net national product for an economy with a wasting essential stock oil deposit we take up maintaining capital intact and locally unchan ging consumption the percentage change in net investment or genuine savings relative to the market rate of interest denotes whether current consumption is rising