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

power market long term stability a hybrid madm ga comprehensive framework stabilizing the long term electricity markets by providing new generation resources is one of the most important challenges that are surfaced to the industry regulators to deal with this complex problem this paper proposes a comprehensive multiple attribute decision making madm framework in which the genetic algorithm ga is used to model the investment decisions of the market generation firms the fitness function of the ga is itself a decentralized optimization problem that simulates the short term behavior of these profit oriented firms a simple fuzzy inference system and an elasticity relation between price and demand represent the power market as the link among all firms the framework is augmented by tradeoff risk analysis to incorporate the effects of the uncertainties finally a realistic case study is presented to show the advantages of the proposed framework

the law and economics movement in the last thirty years the scope of economics has expanded dramatically beyond its traditional domain of explicit market transactions today there is an economic theory of property rights of corporate and other organizations of government and politics of education of the family of crime and punishment of anthropology of history of information of racial and sexual discrimination of privacy even of the behavior of animals and overlapping all these but the last of law 2 some economists oppose this expansion in whole or more commonly in part 3 there are a number of bad reasons all i think closely related for such opposition and one slightly better one 1 one bad reason is the idea that economics means the study of markets so that nonmarket behavior is simply outside its scope this type of argument owes nothing really to economics but instead reflects a common misconception about language more specifically a failure to distinguish among three different types of word or concept the first type illustrated by the term marginal cost is purely conceptual the term is rigorously and unambiguously defined by reference to other concepts just as numbers are but again like numbers there is no observable object in the real world that it names try finding a firm s marginal costs on its books of account the second type of word illustrated by rabbit refers to a set of real world objects few such words are purely referential one can speak of a pink rabbit or a rabbit the size of a man without misusing the word even though one is no longer using it to describe anything that exists nevertheless the referential function dominates finally there are words like law religion literature and economics which are neither conceptual nor referential such words resist all efforts at definition they have in fact no fixed meaning and their dictionary definitions are circular they can be used but not defined 4 one cannot say that economics is what economists do because many noneconomists do economics one cannot call economics the science of rational choice either the word rational lacks a clear definition and passing that difficulty there can be noneconomic theories of rational choice in which few predictions of ordinary economics may hold for example because the theory assumes that people s preferences are unstable there can also be nonrational economic theories an example is the type of survival theory in industrial organization in which firms that randomly hit on methods of lowering their costs expand vis a vis their rivals another example is marxism one cannot call economics the study of markets either not only because that characterization resolves the question of the domain of eco judge u s court of appeals for the seventh circuit senior lecturer university of chicago law school 1111 e 60th st chicago il 60637 i thank gary becker frank easterbrook william landes geoffrey miller richard porter george stigler geoffrey stone and alan sykes for comments on a previous draft and nir yarden for research assistance see for example gary becker 1976 jack hirshleifer 1985 p 53 george stigler 1984 gerard radnitzky and peter bernholz 1986 2 for a recent conspectus of economic analysis of law see my book 1986 3see for example ronald coase 1978 coase is of course a leading figure in the economics of property rights so his opposition is far from total 4for an excellent discussion see john ellis 1974 ch 2

an iterative lmp calculation method considering loss distributions generally the locational marginal price lmp is obtained by solving a linear programming formulation network losses are considered through the preset loss factors based on historical operation information this usually brings errors in the calculated loss under different new scenarios further the congestion component of an lmp is dependent on the choice of the reference bus in this paper a new iterative lmp calculation method is proposed to overcome the aforementioned two drawbacks associated with the traditional lmp calculations at each iteration a linear programming problem for market clearing is solved first losses on branches are considered as fictitious nodal demands at their terminal buses secondly the ac power flow is calculated according to the dispatch results loss factors and fictitious nodal demands are then updated according to the ac power flow solution thus removing the need and dependence on presetting loss factors another important merit is that lmp and its congestion component obtained from the proposed iterative lmp calculation method are independent of choice of the reference bus the effectiveness of the proposed method is illustrated on two benchmark systems the importance of obtaining accurate losses and lmps is also demonstrated

a comprehensive assessment of the evolution of financial transmission rights financial transmission rights ftrs are complementary to the locational marginal pricing of energy the basic aim of the ftr mechanism is to guard forward contracts from uncertain congestion charges ftrs are also useful to individual generators and loads for selling and buying power respectively at the prices of other locations the concept has evolved encompassing many features such as a simultaneous feasibility test various ways to conduct auctions and allocations and secondary trading ftrs also have a close relation to market power and transmission investment this paper reviews most of the landmark research papers on the evolution of the ftr concept it reports a comprehensive assessment of various facets of ftrs and allied issues financial transmission rights and flowgate rights fgrs are compared the concept of long term ftrs is discussed the paper also touches upon future proposals in this area

dcopf based marginal loss pricing with enhanced power flow accuracy by using matrix loss distribution on current days many of the power markets are adopting the practice of marginal loss pricing the dc optimal power flow dcopf model is still mostly used for the purpose of market clearing owing to its simplicity robustness and higher speed of convergence within the dcopf framework transmission line losses are represented as additional external loads on the system in the classical dcopf model of marginal loss pricing as implemented in the new england market the aggregated network loss is distributed over the system nodes in a fixed ratio to gain more design flexibility in the distribution of system losses a matrix loss distribution mld framework is developed in this paper maintaining compatibility with financial transmission rights in mld each individual line is considered separately for the purpose of loss distribution the ratio in which the power loss in a certain line is distributed can be different from that in which the power loss in another line is distributed the additional design flexibility thus obtained assists in making a more accurate representation of the power flow the benefit of mld is illustrated through a case study an energy reference independent application of mld is also suggested

individual and collective time consistency this paper reconsiders the strotz pollak problem of consistent planning and argues that a solution to this problem requires a refinement of subgame perfectness such a refinement is offered through an analysis based on greenberg s theory of social situations the properties of this refinement are investigated and illustrated a unifying framework is presented whereby consistent one person planning as a problem of individual time consistency and renegotiation proofness as a problem of collective time consistency are captured through the same general concept

optimal lmp decomposition for the acopf calculation the objective of this work is to design a suitable rule for the energy reference selection in the ac optimal power flow acopf based locational marginal price lmp calculation in the case of the acopf model the congestion component of the lmp vector exhibits strong dependence on the energy reference this in turn makes the hourly values of financial transmission rights ftrs to be reference dependent and thus is a source of dispute in order to resolve this dispute a direct optimization framework is developed in this work exploring the interrelationship between the congestion components of locational marginal prices at individual buses the objective function and the constraints of this optimization model are carefully designed looking at the true motive of the lmp decomposition at the same time necessary attention is paid so as to ensure revenue adequacy in the ftr settlement the optimization problem that is ultimately to be solved is a simple quadratic programming problem with only one variable and two constraints the effectiveness of the proposed methodology is verified through a case study on a modified ieee 30 bus system the framework developed also unveils several interesting features of the lmp components that were under cover until now

hartwick s rule and maximin paths when the exhaustible resource has an amenity value abstract this paper studies the maximin paths of the canonical dasgupta heal solow model when the stock of natural capital is a direct argument of well being besides consumption hartwick s rule then appears as an efficient tool to characterize solutions in a variety of settings we start with the case without technical progress we obtain an explicit solution of the maximin problem in the case where production and utility are cobb douglas when the utility function is ces with a low elasticity of substitution between consumption and natural capital we show that it is optimal to preserve forever a critical level of natural capital determined endogeneously we then study how technical progress affects the optimal maximin paths in the cobb douglas utility case on the long run path of the economy capital production and consumption grow at a common constant rate while the resource stock decreases at a constant rate and is therefore completely depleted in the very long run a higher amenity value of the resource stock leads to faster economic growth but to a lower long run rate of depletion we then develop a complete analysis of the dynamics of the maximin problem when the sole source of well being is consumption and provide a numerical resolution of the model with resource amenity the economy consumes produces and invests less in the short run if the resource has an amenity value than if it does not whereas it is the contrary in the medium and long runs however and without surprise the resource stock remains for ever higher with resource amenity than without

after the fall the impact of government regulation on church attendance in eastern europe 1990 2004 previous literature modeling the demand for religion has identified socioeconomic factors religious human capital and religious market structure as being the fundamental determinants of the level of participation in religious services and practices building on the existing literature this study analyzes the effect of government regulation and intervention on religious activity using religion related data as well as demographic and economic data from 22 eastern european countries after the fall of communism the existence of any form of religious restrictions is found to reduce church attendance rates

risk based locational marginal pricing and congestion management this paper develops a new electricity market clearing mechanism called risk based locational marginal pricing rlmp the rlmp is derived from the risk based security constrained economic dispatch model where risk is modeled to capture the system s overall security level compared to the traditional locational marginal pricing lmp which is composed of three components energy congestion and loss the rlmp consists of an additional risk component the risk component is a price signal to reflect the system s overall security level this paper discusses the features of rlmp and analyzes its benefits over traditional lmps the proposed concept and method are illustrated on a six bus system and the wecc 240 bus system

an energy reference bus independent lmp decomposition algorithm the volatility of the price of electricity in a locational marginal price lmp market makes it necessary to introduce financial price risk hedging instruments the congestion related and marginal loss related revenue surpluses collected by the regional transmission operator rto are proposed to be redistributed to market players it is important to be able to correctly decompose the lmp into its congestion and marginal loss components which are critical for the valuation and settlement of these financial instruments a new energy reference bus independent lmp decomposition model using an ac optimal power flow opf model is presented to overcome the reference bus dependency disadvantage of the conventional approach the marginal effect of the generators output variation with respect to load variation are used as the basis of this decomposition model the theoretical derivation and a proof are given the new model achieves a set of reference bus independent results an example is presented comparing the new model with the conventional model

transmission management for congested power system a review of concepts technical challenges and development of a new methodology transmission networks have some constraints that should be addressed in order to ensure sufficient control to maintain the security level of a power system while maximising market efficiency the most obvious drawback of transmission constraints is a congestion problem that becomes an obstacle to perfect competition among the market participants since it can influence spot market pricing as the power flow violates transmission constraints redispatching generating units is required and this will cause the price at every node to vary this manuscript presents concepts technical challenges and methodology for investigating an alternative solution to the redispatch mechanism and then formulates lmp scheme using an optimisation technique that may well control congestion as the main issue the lmp scheme are varied and improved to take into account the energy price congestion revenue cost of losses as well as the transmission usage tariff by utilising shift factor based optimal power flow sf opf which is derived from the well known dc optimal power flow dc opf model

deregulating religion the economics of church and state traditional religious research fails to recognize religion as a market phenomenon it especially overlooks supply side factors that shape the incentives and opportunities of religious firms emphasizing instead demand side shifts in the perceptions tastes and needs of consumers this paper reviews the effects of government actions that alter religious supply a longer version appears in economic inquiry 40 2 april 1997

implementation of lmp ftr mechanism in an ac dc system this paper analyzes the implementability of locational marginal price lmp and financial transmission right ftr mechanisms in the presence of high voltage dc hvdc lines in the regulated i e under the control of system operator network the established framework of lmp ftr mechanism assumes that the system under regulation is fully ac unregulated or private hvdc lines are taken into account within this framework through proxy transaction bids from the line owners however as the flow over a regulated hvdc line has to be controlled by the system operator himself the existing lmp ftr framework becomes insufficient if the system contains or is expanded with regulated hvdc lines the augmentation that should be made to the existing framework to include regulated hvdc lines is explained in this paper it is shown that the flow over a regulated hvdc line can be modeled as a non chargeable bilateral transaction without causing any threat of negative congestion surplus for this power dispatch model revenue adequacy of ftrs can be still ensured by means of the conventional simultaneous feasibility test sft model by utilizing the capacities of dc lines a more general sft model is further developed the modified auction problem is discussed and tested for the non negativity of net auction collection the process of revenue adequate issuance of auction revenue rights is explained finally the relative merit of a regulated hvdc line over a private hvdc line is discussed through a case study

a general formulation for lmp evaluation the evaluation of locational marginal prices or lmps which constitute the basis of the new generation of market design in the u s is a critical need in the side by side operation of electricity markets and power systems their use in various applications such as congestion management and hedging requires specific lmp components in the computations we provide a general formulation for the evaluation of the lmp components by making explicit use of the important role played by the nodes with generators with free capacity on the other hand the lmps of the nodes without generation or with the generators at their limits are a function of the lmps at the marginal nodes and the impacts of the network constraints including the losses in the network in the formulation we pay special attention to the importance of the assumptions and specifications the so called policy specification in the determination of the components we obtain a very general formulation that brings under a single framework the different decomposition approaches that exist the formulation s comprehensiveness brings numerous insights into the various decompositions provides a platform for their comparative analysis and allows us to understand the direct implications and the role of the policy specified moreover the formulation reveals the limitations of any decomposition into the components due to the underlying structural interdependencies among them which is clearly shown in this paper we provide an example to illustrate the capabilities and the insights obtainable with the use of this formulation

introduction to the economics of religion after a very long hiatus economists have begun again to study the relationship between economics and religion this article seeks to summarize and evaluate the principal themes and empirical findings that have appeared in some 200 recent papers on the economics of religion although some of the research concerns the economic consequences of religiosity most applies standard economic theory to the study of individual religious activity the characteristics of religious groups and the impact of regulation and competition on religious markets

religious freedom and the unintended consequences of state religion 1 introduction a union of government and religion tends to destroy government and degrade religion so wrote justice hugo black in the majority opinion in engel v vitale 1 a 1962 school prayer case decided by the united states supreme court today church state issues continue to rise to the forefront of american politics in recent years alone disputes have arisen over public school vouchers and prayers the phrase under god in the pledge of allegiance the display of the ten commandments in public meeting halls and courthouses and the proper scope of president bush s recent faith based and community initiative across the atlantic william carey the recently retired archbishop of canterbury argued in april 2002 that establishment strengthens the church of england by allowing it to build a comprehensive network of parishes throughout the entire country and he denied that establishment has constrained the prophetic voice of the church 2 in contrast carey s successor rowan williams who became archbishop of canterbury in july 2002 has in the past advocated the disestablishment of the church of england 3 in sweden where the church of sweden had been the state church since 1593 the parliament passed a statute providing for the formal disestablishment of the church on january 1 2000 4in the united states the strongest advocates for giving religion a more prominent role in governmental settings have often been religious conservatives whereas the strongest opponents are often political liberals for example in the recently decided cleveland school voucher case 5 christian organizations like focus on the family the christian legal society the ethics and religious liberty commission of the southern baptist convention the national association of evangelicals and the united states conference of catholic bishops filed briefs in support of the program which allowed public funds to pay tuition in private schools including religious schools among the organizations filing briefs in opposition to the program were the naacp and various public education lobbies whereas the american civil liberties union people for the american way and americans united for separation of church and state provided legal representation for some of the plaintiffs challenging the voucher program interestingly however several religious organizations also filed briefs in opposition to the voucher program including the american jewish committee the jewish council for public affairs the baptist joint committee on public affairs the national council of churches of christ in the usa ncc and two regional seventh day adventist organizations except for the ncc these organizations represent the interests of religious groups that are or in the case of the baptists once were distinctly in the religious minority a growing body of research suggests that any positive benefits to the church with direct support from the state are outweighed by indirect effects that undermine the church s autonomy and its authority with the general populace for an excellent introduction to this research see stark and finke 2000 chapter 9 if such research is correct then the advocates of governmental endorsement of religion may be undermining the very institutions they seek to support in this article we use cross country survey responses to assess the impact of religious freedom and the separation of church and state on the health of religion throughout the world using survey responses on the frequency of attendance at religious services we find that government establishment of state religion reduces religious attendance whereas enduring constitutional protection of religion increases religious attendance adam smith recognized that establishment could ultimately undermine the state religion in the wealth of nations smith discussed the impact of establishing a religion on the fervor and effectiveness of the clergy in that religion the teachers of religion in the same manner as other teachers may either depend altogether for their subsistence upon the voluntary contributions of their hearers or they may derive it from some other fund to which the law of their country may entitle them such as a landed estate a tythe or land tax an established salary or stipend

simultaneous determination of church contributions and church attendance in a standard model of household allocation of time and income church attendance and church contributions are determined simultaneously there are life cycle aspects to both attendance and contributions as azzi and ehrenberg 1975 and ehrenberg 1977 have argued and contributions behavior is affected by tax treatment and by a potential free rider problem as well this paper motivates an econometric specification which recognizes these features and estimates the parameters with a data set of over 2000 protestant church members

church attendance in great britain an ordered logit approach the church attendance decision of individual economic agents is analysed within a becker style allocation of time framework using an ordered logit model with data derived from the british household panel study bhps separate attendance equations are estimated for males and females the empirical results in line with previous north american studies suggest that labour income variables do account for some of the variation in attendance in addition attendance is found to be correlated with factors such as denominational affiliation educational attainment and intensity of belief

reactive power constrained opf scheduling with 2 d locational marginal pricing the objective of this paper is to suggest a robust optimal power flow opf framework to perform locational marginal pricing under the scarcity of reactive power the classical opf models employed for market clearing either assume infinite reactive power support or make a fully independent representation of the reactive power load in contrast a potentially more accurate power flow model is adopted in this paper recognizing the dependence of the level of reactive power consumption on the level of active power consumption the relationship is primarily modeled by employing the concept of power factor in addition there can be load requests with different power factors from the same location the corresponding locational marginal prices lmps are found to vary not only spatially but also according to power factors thus a two dimensional lmp variation is finally obtained a consistent definition of financial transmission rights is also provided and the associated lmp decomposition scheme is described the model proposed is studied on the ieee 30 bus system and its distinctive features are noted down and discussed

market based price differentials in zonal and lmp market designs the california iso is redesigning procedures for scheduling dispatch and congestion management which are critical to reliable nondiscriminatory transmission service the redesign implements security constrained unit commitment and locational marginal pricing to reflect actual costs of delivering energy using an accurate network model to price both congestion and losses caiso simulations of the market redesign are a unique opportunity to compare a estimated lmps if the redesign were in place during recent historical periods with b actual conditions as logged in operating records the study uses market schedules and bids in an alternating current optimal power flow simulation resulting lmps are similar within current congestion zones but price differences occur during high loads reflecting actual changes in system conditions the frequency and magnitude of lmp differences are consistent with the current market suggesting that the increased market transparency will produce stable predictable prices case studies demonstrate that optimization using scuc and sced coupled with the state estimator allows more appropriate responses to system conditions improved utilization of transmission capacity reduction in congestion costs and enhanced system reliability

sustainability constraints versus optimality versus intertemporal concern and axioms versus data sustainable sustained or survivable development are defined here as distinct sustainability constraints on intertemporal distribution in a context which ignores uncertainty environmental and intratemporal concerns such constraints are neither self contradictory nor redundant for they can conflict with maximizing the present value of utility optimality nor inferior since the axioms underlying optimality are ethically arbitrary and refuted by empirical psychological data axiomatic arguments may clarify but cannot resolve debates about intertemporal concerns data suggest that sustainability constraints are not respected and that intertemporal welfare functions containing a preference for sustained improvement may better reflect what bodies politic mean by sustainability

locational marginal price calculations using the distributed slack power flow formulation in practice locational marginal prices lmps are usually calculated by assembling their three components the reference price the congestion price and the loss price explicit formulas for calculating the three components based on the single slack power flow formulation can be found in the literature this letter presents the formulas for calculating the three components based on a distributed slack power flow formulation

a characterization of sustainability with indicators abstract economists favor the use of criteria to characterize sustainability in practice policy makers use indicators i e measurements based on the current economic state and decisions representing given sustainability issues in this paper i introduce a criterion characterizing sustainability with indicators and thresholds acting as constraints i interpret the thresholds as minimal rights to be guaranteed to all generations and define sustainable trajectories as those satisfying all the constraints at all times the new criterion is a generalized maximin criterion the approach is applied to a simple production consumption economy with non renewable resources to derive some policy recommendations on the use of indicators to deal with sustainability i discuss the implications of such a criterion in terms of trade off between sustainability thresholds efficiency and time consistency in particular the resulting problem is time inconsistent and sustainability thresholds may be revised over time following the time inconsistent policy based on indicators with dynamic revision of the thresholds may however result in a sustained utility path and even in utility growth