sharing the risk of home ownership a portfolio approach this paper examines the relationships among the desirability of home ownership price risks and the return of housing investment it argues that price risks may undermine the desirability of ownership using both a theoretical and an empirical approach the theoretical model studies aspatially the equilibrium house prices in a two good pure exchange economy where investors consumers differ in their level of risk aversion it shows that larger price risks and higher level of risk aversion decrease the attractiveness of owning a house the empirical component uses current status data and a proportional hazard model to show the effect of risks and returns on households hazard rates to be owners the implication points to the inadequacy of the conventional housing finance arrangements which provide little help for households to diversify or hedge the risk of home ownership

the inverted pyramid a neo ricardian view on the economy environment relationship abstract in ecological economics natural resources which may contribute only a small amount to gdp are viewed as fundamental to the functioning of the economy they are sometimes pictured as sitting at the base of an inverted pyramid with the rest of the economy balanced on top of them in this paper we show that when prices are set by markup a standard heterodox assumption then the inverted pyramid picture of the economy emerges naturally in a neo ricardian model we demonstrate the use of the model with brief applications to biophysical economics the paper is one of a growing number that use heterodox macroeconomics to address questions in ecological economics

an economic analysis of the homeownership decision analysts of the homeownership decision have traditionally asserted that owning makes much greater sense than renting 16 p 359 for families in high tax brackets however empirical studies of homeownership propensities indicate that not all high income families own nor do all low income families rent for example li 8 p 1081 notes that a large number of studies find that a variety of variables such as family size age of the head and race are generally found to be determinants of homeownership even when income or the marginal tax bracket are held constant previous attempts to explain why the marginal tax bracket is not a sufficient statistic for homeownership argue that people differ in their preferences for homeownership either because owning and renting are not perfect substitutes in consumption see for example 13 141 or because of differences in liquidity mobility ability at home repairs and home management and simply peculiar circumstances 4 p 14 this paper develops a general model of the homeownership decision and explores two alternative explanations of why the marginal tax bracket is not a sufficient statistic this is accomplished by incorporating both transaction costs and housing market quality sorting into the model section ii derives a simple parametric statement of the homeownership decision the third section examines the special case which yields a homeownership decision rule which is comparable to existing models an alternative special case is presented in the fourth section which incorporates consumer sorting across quality markets it is demonstrated that the housing market may adjust until

targeted saving by renters for housing purchase in japan abstract this paper examines the extent to which wealth accumulation for housing purchase increases household savings and suppresses consumption the study employs an estimation method based on simultaneous equations with limited dependent variables developed by nelson and olson to examine the relationship between wealth accumulation and housing purchase plans using data relating to young japanese renters the estimation results provide evidence that young japanese households severely reduce their consumption by around 30 40 percent

designing supply contracts contract type and information asymmetry this paper studies the value to a supplier of obtaining better information about a buyer s cost structure and of being able to offer more general contracts we use the bilateral monopoly setting to analyze six scenarios three increasingly general contracts wholesale pricing schemes two part linear schemes and twopart nonlinear schemes each under full and incomplete information about the buyer s cost structure we allow both sides to refuse to trade by explicitly including reservation profit levels for both for the supplier this is implemented through a cutoff policy we derive the supplier s optimal contracts and profits for all six scenarios and examine the value of information and of more general contracts our key findings are as follows first the value of information is higher under two part contracts second the value of offering two part contracts is higher under full information and third the proportion of buyers the supplier will choose to exclude can be substantial

approximate surrogate production functions the cambridge debate showed that an aggregation of capital is not possible in general a recent investigation has found one example for reswitching and several for reverse capital deepening but the paradoxes appear to be infrequent the paper provides a theoretical justification of this result and shows how wage curves of input output matrices with small non dominant eigenvalues become quasi linear with some numeraires large random systems lead to the genesis of such states approximate surrogate production functions then seem possible a family of economic systems with constant capital composition allows construction of a surrogate production function copyright oxford university press

the 40 neoclassical aggregate theory of production the assumption that production in an economic system may be described by an aggregate neoclassical production function is at the heart of most modern equilibrium neoclassical business cycles and growth models its validity requires stringent assumptions on individual production functions and market structure in this article the likelihood that an aggregate neoclassical production function could emerge from a simple heterogeneous production system is assessed by the use of computer simulations the conclusion is that there exists a world of significant size for which the aggregate neoclassical theory of production does not hold

from agriculture to rurality new approaches in territorial economics in the first part the paper presents the evolution of the rural develoment theories from 50s to nowadays consequently in the second part it is addressed the issue of how the transition from subsistance economy to traditional economy to agricultural economy to rural economy could delineate virtuous processes of local development in specific contexts this concept is futher developed in the third part where territorial development is analysed in accordance with international studies and more specifically with european ones and in the forth where the topic is critically focused in the framework of the brazilean literature

intergenerational transfers borrowing constraints and saving behavior evidence from the housing market abstract we examine the effects of intergenerational transfers on saving behavior by analyzing transfers targeted to first time home purchases transfer recipients have a shorter time to save for a down payment of 9 20 for each dollar of transfer received total savings falls by 29 40 cents and the down payment rises by 61 71 cents transfer recipients increase the value of the home purchased but by an amount that is much lower than possible if the transfer were fully leveraged in addition transfers appear to help households achieve certain down payment thresholds that give favorable mortgage terms

an empirical investigation of paradoxes reswitching and reverse capital deepening in capital theory this paper examines the empirical relevance of the capital controversy the price model of sraffa and the dual models of the price and quantity systems of von neumann become the basis of the investigation in the course of the controversy it proved easy to construct theoretical examples which contradicted the fundamental neoclassical hypothesis of an inverse capital demand function this paper presents empirical examples for the first time thiry two input output tables from the oecd database serve as data as a result one envelope is found which involves reswitching reverse substitution of labour or reverse capital deepening are observed in about 3 65 of tested cases they involve at least two switchpoints copyright 2006 oxford university press

a microfoundation for production functions assignment of heterogenous workers to heterogenous jobs in very different fields of economics economic inference and policy evaluation require economists to parametrize a production function that links measures of input factors to measures of output while doing so strong assumptions are implicitly made about microeconomic variables governing the shape of the aggregate production function in this paper i develop an assignment model that provides a microeconomic foundation for aggregate production functions the shape of the production function depends crucially on the distribution of workers and jobs and the type of technological changes depends crucially on the evolution of these distributions sufficient and necessary conditions are provided for the production function to be of the constant ratio of elasticities of substitution form a form nesting the broadly used constant elasticity of substitution form this model provides a way to evaluate how stringent assumptions about the type of production function or technological change are by comparing the implied distribution of jobs and its evolution over time to observations of the distribution of jobs and its evolution over time

tenure changes in the context of micro level family and macro level economic shifts almost all the work to date on tenure changes specifically the move from rent to own has been derived from cross sectional analysis of this important housing market decision economists have emphasised the investment nature of the housing consumption decision while demographers and geographers have investigated tenure change in relationship to the demographic characteristics of the household now the developing notions of life course analysis and the availability of longer panel series enable us to investigate not just the demographic relatives of tenure change but the critical aspects of timing as well specifically many couples choose to buy and make the transition to a family within 2 3 years we show also that tenure change is influenced by both spatial and temporal economic contexts

entry to home ownership in germany some comparisons with the united states new research on migration mobility and housing tenure choice using the concept of the life course is providing an enriched analysis of the context within which housing choices are made and of the demographic and economic variables which are critical determinants of the decisions to move and to change tenures the availability of panel series data for the us and germany allows cross national comparisons of the migration and tenure choice processes there are substantial differences in the rates of mobility and the rates of moves of households from the rental sector to ownership especially for couples but the results confirm the overall similarities in the mobility and tenure choice processes despite the differing government commitments to housing policy the models show that it is primarily couples and families who make the transition to ownership and that income and number of earners are important in both contexts and german households have even higher incomes before they make the transition to ownersh

innovation spending and productivity growth in the german economy 1980 1986 a newly developed technique involving vertically integrated input output sectors is used to examine the relationship between labour productivity and innovation expenditures in the german economy during the period 1980 to 1986 the productivity measures used dubbed harrod robinson read hrr take into account the direct and indirect labour used in each consumption goods sector included in these measures is the labour content of new capital investment the hrr measures show higher rates of productivity growth in most sectors compared to the simple direct labour requirements measures this is due to the fact that the hrr measures take into account the increased efficiency with which new capital is produced the second part of the study examines the relationship between labour productivity and innovation expenditures as measured by the ifo institute for economic research munich innovation survey using cross section data for 58 german industries a strong correlation was found between direct labour pr

coalition formation problem for sourcing contract design in supply networks abstract this article studies a coalition formation problem for cooperative replenishment with a single supplier and multiple firms we consider that a vertical cooperation between the supplier and the set of firms is already set using periodic individual contracts and we investigate the profitability of a horizontal cooperation between firms when designing collaborative contracts given the significant savings that can be realized thanks to horizontal collaboration the main interest of the potential collaborating firms is to figure out how the collaborating group should be formed and how stable alliances and coalitions should be generated in this article the two questions are studied in two business situations focusing either on the collaboration opportunities in the ordering or the transportation process in each collaborative situation a decision making approach is applied to assess the expected profitability of each firm and to determine if firms should form coalitions to maximize their profits an exact solution method based on a game theoretic approach is developed called cooperative replenishment algorithm cra which generates core stable coalitions for cost savings regarding all partner standpoints an analytical study of stability conditions regarding the ordering and transportation cost structures were performed to enhance the cra resolution procedure extensive experiments based on realistic instances are provided to validate the performance of the cra proposed in terms of solution stability and convergence the computational results also confirm the potential benefit of horizontal collaboration between firms in terms of profit maximization compared to the stand alone situation

the fund flow approach a critical survey the fund ow approach to production theory was proposed by nicholas georgescu roegen almost half a century ago and it provides a description of production as a process unfolding in time and entailing a temporal coordination between dierent elements despite the initial interest the approach has seldom received attention by mainstream economists and it is not yet well known the paper critically surveys georgescu roegen s model together with i the later developments and modications ii the recent criticisms focused on its limitations due to the instrumental assumption of constant eciency for funds the paper concludes by discussing the limits and comparative merits and suggesting possible applications

precaution and liquidity in the demand for housing we exploit cross sectional mortgage data to investigate the importance of liquidity constraints and a precautionary motive in the demand for housing households that are not liquidity constrained consume housing services essentially as the life cycle hypothesis suggests but with a significant precautionary component households that are liquidity constrained in terms of not meeting standard loan to value or payments to income constraints are similar to unconstrained households in most respects including the precautionary motive but they respond somewhat less to fluctuations in their lifetime income suggesting some influence of bank induced liquidity constraints we additionally find however that banks enforce liquidity constraints only weakly jel d91 d12 r21 i introduction the benchmark theory in the economics of consumption is the life cycle or permanent income hypothesis lcpi based on the work of modigliani and brumberg 1954 and friedman 1957 its empirical validity is sometimes questionable especially when compared against alternatives that incorporate liquidity constraints or the precautionary motive for saving see for instance deaton 1992 for a survey rejection of the lcpi may however be just a manifestation of the poor quality of consumption data at the micro level these data are typically subject to the reporting biases and omissions inherent in consumer surveys there are further difficulties in measuring a desired stream of consumption services nondurable consumption goods are a small fraction of total consumption and in the case of food essentials hardly a consumer choice variable durable consumption goods have the feature that they are lumpy and that the consumption services at any point in time are hard to measure we propose to test the lcpi at the micro level with a quite different type of data the data are obtained from the residential mortgage finance database collected by the national association of realtors they are based on actual home purchases and the associated mortgage transactions reported by realtors and thus avoid some of the reporting biases of the consumer surveys more important they allow us to accurately identify households that in principle have instantaneous access to additional liquidity by lowering the down payment for the house purchase or increasing the size of the loan further the purchase of a house provides an accurate measure of a relatively large fraction of consumption services obtained for a medium to long horizon and measured at the time of the consumption decision although our data also have some serious shortcomings they allow a look at the lcpi from an unconventional vantage point perhaps the most influential study employing the standard consumer survey in testing the lcpi at the micro level is that of hall and mishkin 1982 it examines food expenditure from the panel study of income dynamics one of their key results is that consumption tracks income more closely than would be expected under the lcpi they demonstrate that this result could be explained by assuming a group of liquidity constrained consumers consuming their income at each point in time of 20 of the total sample some of the drawbacks of this study are the use of food expenditures to represent consumption the underreporting of income and absence of proper wealth data inherent in the consumer survey and the associated inability to individually separate liquidity constrained consumers from the rest of the sample several previous studies have attempted to improve on this way of testing the lcpi by examining other data sets bernanke 1984 used data on durable consumption goods automobiles to overcome the drawbacks of using food consumption in the hall and mishkin study his results support the lcpi but are still suspect because of possible reporting biases and the lack of good wealth and savings observations

the aggregate production function is not neoclassical standard postulates concerning the aggregate production function are about marginal productivities and the associated demands for labour and capital these demands are supposed to be negatively related to the factor prices namely the wage rate and the interest rate the theoretical cases in which these neoclassical properties fail to hold are regarded as anomalies we compute the aggregate values for production capital and labour and find that the neoclassical postulates do not hold for the detailed dataset that we consider the obvious implication of this result is that the models and analysis based on the aggregate neoclassical production functions are ill founded as they are based on something that does not exist

on constructing numeraire free measures of price value deviation a note on the steedman tomkins distance this paper argues that there exists an infinite number of numeraire free measures a la steedman tomkins of price value deviation on the empirical side it provides an illustration of those measures using input output data from the swedish economy copyright the author 2010 published by oxford university press on behalf of the cambridge political economy society all rights reserved oxford university press

discount pricing decisions in distribution channels with price sensitive demand abstract in this paper we evaluate the effectiveness of quantity discounts and volume discounts as coordination mechanisms in distribution channels with demand that is price sensitive we consider a single vendor single retailer distribution channel demand for the product arises only at the retailer the demand faced by the retailer is assumed to be deterministic but price elastic the retailer in turn buys the product from the vendor the vendor and the retailer act independently and rationally each maximizing their own respective profit the equilibrium point that specifies the vendor s and buyer s inventory and pricing policy is determined by the solution to a stackelberg game we consider the cases when quantity discount and volume discount respectively are offered we develop methods to determine the optimal discount policy for these cases we then consider the case where both volume and quantity discounts are offered simultaneously and develop a method to determine the optimal simultaneous discount offer the relative performance of the alternative discount schemes is then evaluated through a numerical study the results of the study demonstrate that the effectiveness of volume discount as a coordination mechanism is higher when the sensitivity of demand to price changes is higher the effectiveness of quantity discount on the other hand is higher with lower price sensitivity of demand finally the results also demonstrate that perfect coordination is achieved when volume and quantity discounts are offered simultaneously

competitive and cooperative inventory policies in a two stage supply chain we investigate a two stage serial supply chain with stationary stochastic demand and fixed transportation times inventory holding costs are charged at each stage and each stage may incur a consumer backorder penalty cost e g the upper stage the supplier may dislike backorders at the lower stage the retailer we consider two games in both the stages independently choose base stock policies to minimize their costs the games differ in how the firms track their inventory levels in one the firms are committed to tracking echelon inventory in the other they track local inventory we compare the policies chosen under this competitive regime to those selected to minimize total supply chain costs i e the optimal solution we show that the games nearly always have a unique nash equilibrium and it differs from the optimal solution hence competition reduces efficiency furthermore the two games equilibria are different so the tracking method influences strategic behavior we show that the system optimal solution can be achieved as a nash equilibrium using simple linear transfer payments the value of cooperation is context specific in some settings competition increases total cost by only a fraction of a percent whereas in other settings the cost increase is enormous we also discuss stackelberg equilibria

housing appreciation mortgage interest rates and homeowner mobility abstract this paper presents a model of the optimal timing of tradeup which considers consumption and investment motives of homeownership households determine the optimal timing of trading up so as to maximize their intertemporal utility of both housing and nonhousing consumption first we consider current homeowners who already own a house and expect that they trade up to a more valuable house at some point in the future housing appreciation tends to induce an earlier optimal timing of trading up moreover housing appreciation makes current homeowners better off in terms of welfare however current homeowners suffer from a rise in mortgage interest rates second we consider first time home buyers who have decided to buy a house and expect to trade up to a more valuable house in the future their initial housing consumption is determined by an initial downpayment constraint in this case the effect of housing appreciation on the optimal timing of trading up is ambiguous and unlike current homeowners first time home buyers suffer from housing appreciation moreover as current homeowners first time home buyers suffer from a rise in mortgage interest rates most of the theoretical analytic results are ambiguous accordingly we perform numerical simulations based on the theoretical model in order to determine the most likely comparative effects for a stylized set of parameters as is apparent the model captures the recent observations on homewner mobility and suggests that macroeconomic variables such as housing appreciation and mortgage interest rates effect the optimal timing of trading up and homeowner s welfare nevertheless the model in this paper has several shortcomings which should be the subject of future research first transaction costs are ignored if transaction costs are incorporated the lock in effect from a rise in mortgage interest rates is well explained however the general analysis above is not altered in any essential way second multiple moves are not considered in this model therefore we concentrate on the timing of one tradeup as opposed to the timing and frequency of trading up in a different vein it would be interesting to test empirically the importance of the effects of macroeconomic variables on trading up by using microdata

georgescu roegen s flow fund theory of production in retrospect abstract this paper provides a synthetic account of georgescu roegen s flow fund theory as a contribution to the history of ecological economics it reconstitutes georgescu roegen s perspective on production and its relationships with other frameworks such as the neoclassical production function and input output tables the overall purpose is to clearly establish the foundations of the flow fund theory and to introduce the research perspectives it opens for ecological economics the paper puts particular emphasis on the relationships between the flow fund framework and two other aspects of georgescu roegen s thought first his methodological perspective on economics and the role of mathematical models allows for a better understanding of the foundations of the flow fund theory second this framework incorporates georgescu roegen s interest in the physical dimension of the economic process and the implications of the laws of thermodynamics overall the paper concludes that the flow fund theory has solid foundations and thus represents a credible alternative to standard theories of production however in order to show how this framework can shed light on contemporary issues in ecological economics more applications are needed especially at the theoretical level the main challenge for future research is to develop such applications while trying to be faithful to the foundations of the flow fund theory

a supplier s optimal quantity discount policy under asymmetric information in the supply chain literature an increasing body of work studies how suppliers can use incentive schemes such as quantity discounts to influence buyers ordering behaviour thus reducing the supplier s and the total supply chain s costs various functional forms for such incentive schemes have been proposed but a critical assumption always made is that the supplier has full information about the buyer s cost structure we derive the optimal quantity discount policy under asymmetric information and compare it to the situation where the supplier has full information

an empirical study on coalition formation and cost savings allocation abstract interest has been raised by the recent identification of potential savings through collaborative planning in logistics operations even though substantial savings can be realized two key questions exist i how should potential savings be divided among a group of collaborating companies and ii among potential collaborating companies how should collaborating group s be formed these two questions are studied in a specific context among potential collaborating companies a subset denoted the leading companies performs collaborative planning on behalf of the others and together they initiate formation of a collaborating group we use the concept of a business model to detail such context based on the literature on network formation where potential savings are modelled by a cooperative game four business models are explored in four different subsets of leading companies we propose a network model as a method to determine the stable collaborating group in each computation a case study including eight forest companies is described and analyzed results show that very different solution characteristics can be achieved depending on the business model selected

housing tenure choice in transitional urban china a multilevel analysis summary using a 1996 national survey of housing in china and a multilevel modelling technique we examine housing tenure choice in transitional urban china where households have been granted limited freedom of choice in the housing market since the housing reforms of 1988 we e nd that both market mechanisms and institutional forces affect households tenure choice in urban china while some socioeconomic factors such as age household size household income and housing price have similar effects on tenure choice as in the west others such as the number of workers and marital status have rather different effects in addition factors characterising institutional relationships among the state work units and households such as hukou job rank and work unit rank still play important roles in tenure choice

quantity discounts managerial issues and research opportunities marketing managers frequently administer pricing policies involving substantial quantity discounts however our understanding of the precise role of these discounts and their design is quite limited this paper reviews and integrates the economics and marketing literature and presents a detailed analysis of the policies of four firms in order to i specify the variety of motivations for quantity discounts ii provide guidelines to managers in designing quantity discount schedules and iii set out the most fruitful directions for future research

pure joint production and international trade a note this paper applies the principles of the neo ricardian or sraffian theory of international trade to certain joint production systems it is shown that in contrast with single product systems i there is not always a pattern of international specialisation which would entail the increase of the real wage rate in both economies and ii the law of comparative advantage has no general validity furthermore not only the existence of such a pattern of specialisation but also the validity of this law depend on the values of the variables of distribution of income the analysis is wholly based on two of the numerical examples formulated by bidard in 1997 and further generalised in an elementary way only when this is considered necessary copyright 2004 oxford university press

homeownership and investment in risky assets abstract this paper uses the 1989 survey of consumer finances to show that committed expenditures related to homeownership cause agents to hold their financial assets in a safe form this work follows theoretical results by fratantoni 5 which show that the mortgage commitment leads to reduced risky asset holding and empirical results by guisoet al 7 which show that agents with uncertain labor income hold fewer risky assets i find that doubling the median homeowner s mortgage payment income ratio leads to a 15 decrease in the risky share

european economic integration and comparative advantages on the basis of a set of input output tables we computed the european net product possibility frontier nppf for the years from 1995 to 2011 during this period several barriers to trade have been removed allowing higher levels of trade and regional integration subsequently we propose a method to check whether the prediction to be derived from comparative advantages cas theory namely a specialization pattern that allows to reach the nppf is verified the results suggest that cas were not exploited well during the period considered and no positive trend emerged the implication of our results is that there is ample scope for a coordinated policy aimed at improving allocation of resources further research on this topic seems to be necessary

aggregate production functions revisited the mobility of capital and the rigidity of thought past work on aggregation of production functions has focused on aggregation over firms where technology is embodied in fixed capital this paper shows that much of the stringency of the necessary conditions for aggregation resides in the nature of aggregation over firms and not in the immobility of capital roughly when capital is mobile aggregation is permitted for any group of factors under the union of the conditions which otherwise applied to aggregation of fixed or aggregation of movable factors respectively no truly new conditions appear the results are also interpreted in terms of output aggregation

value price and exploitation the logic of the transformation problem this paper tries to clarify the logical structure of the relationship between labor values and prices from an axiomatic perspective the famous transformation problem is interpreted as an impossibility result for a specific interpretation of value theory based on specific assumptions and definitions a comprehensive review of recent literature is provided which shows that there are various theoretically relevant and logically consistent alternative interpretations based on different assumptions and definitions

the reduction of greenhouse gas emissions from freight transport by pooling supply chains it is well known that freight consolidation is an effective way to improve the utilization of logistics resources in fact today this policy is locally and fragmentally implemented at the operational level we propose here to explore the environmental impact of pooling of supply chains at the strategic level merging supply chains with real data from two main french retailers and through an optimization model we compute co2 emissions for two transport modes road and rail as regards the general dependency of the emissions produced by the modes of transport on their loads the emissions functions of the two modes are both piecewise linear and discontinuous functions the supply network pooling proposed here is an efficient approach to reducing co2 emissions even if the attention is focused on the emissions the transportation costs are also studied and analyzed

the surrogate wage function and capital theory with measurement technological change induces a structural change in both the values tableau and the prices tableau of an economy the measurable change in the values tableau reveals the labor saving effect and the measurable change in the prices tableau reveals the cost reducing effect a measure preserving transformation between the values tableau and the prices tableau provides the basis for an unambiguous definition of the aggregate capital labor ratio notion as a function of the rate of profit the paper shows that the direction of shifts in the capital functions of an economy depend on the relative strength of the labor saving effect versus the cost reducing effect of technological change if the cost reducing effect of technological change is greater less than the labor saving effect then the capital labor ratio decreases increases and the system generates a rising falling tendency for the rate of profit

quantifying the decision to become a first time home buyer becoming a first time homebuyer is quantified in two stages using household data a renter demand curve is estimated to calculate the consumer surplus gain from moving into housing consumption equilibrium probit is used to estimate the probability of becoming a first time homebuyer the model suggests that overcoming the transactions cost of buying and the gain from housing consumption equilibrium are important to the decision renting is explained by current housing demand through income and family size buying for the first time is explained by factors which reduce transactions costs such as assets marital status and education disequilibrium in rental housing consumption is also important the results further suggest that permanent income is not important to the decision

values prices of production and market prices some more evidence from the greek economy this paper extends the empirical investigation of the relation between labour values and different price forms in the case of the greek economy subjecting the labour theory of value to empirical tests with data from various countries helps in the derivation of general conclusions regarding its empirical validity and practical usefulness our results on the closeness of values and prices as measured by their absolute deviation and correlation the shape of the wage profit curves the predictive power of labour values over market prices compared with other value bases and the comparison of fundamental marxian categories when estimated in value and price terms provide further support for the empirical strength of the labour theory of value

on measuring the deviation of prices from values it has often been found useful to measure in some way the extent to which with profit prices diverge from zero profit values but it is not satisfactory to employ a measure which varies with the choice of numeraire for this element of arbitrariness has nothing to do with the central idea of asking how much the direction of the price vector differs from that of the value vector the authors develop a measure which involves no numeraire and then illustrate its use with data from the united kingdom the irish republic and australia copyright 1998 by oxford university press

technological change in canada 1961 80 an application of the surrogate wage function this paper applies c ozol s surrogate wage function to canadian input output data to analyz e the general properties of technological change during the 1961 80 p eriod technological change manifests itself in the shifts of the est imated surrogate wage curves which indicate the changing capital and labor intensities of the production system the empirical results of this study imply that technological progress in canada is generally l abor saving over the entire 1961 80 period and capital saving over th e 1961 66 period the actual tendencies of the technological evolutio n investigated appear to be explained by the continuous mechanization of the production process

sraffa leontief lange the political economy of input output economics abstract the fields of political economy and input output economics are commonly unrelated due to the discrepancy between the qualitative and quantitative analysis in economic science with the aim to overcome this separation this paper relates the basic model of production of commodities by means of commodities to the paradigm of planning as the substitute for the market by sketching the logical historical development of input output economics the model of sraffa the leontief matrices and the political economy of marxist tradition represented by oskar lange are strongly associated so that the typical qualitative concepts of planning law of value and historical development of the capitalist system can be connected to the quantitative framework of matrix programming and mathematical formalization

values prices and wage profit curves in the us economy this paper presents labor values and prices of production calculated for the postwar u s economy using a seventy one sector input output model with fixed capital as well as actual wage profit curves during the same period it is found that the cross sectional deviations of values and prices of production from market prices are quite small between 12 and 14 percent on average over time approximately 75 percent of the variation of market prices is accounted for by changes by both values and prices of production and 93 percent of the variation of prices of production is accounted for by changes in labor values wage profit curves exhibit near linearity casting some doubt on the significance of reswitching for actual economies copyright 1989 by oxford university press

the neo ricardians focuses on the neoclassical theory of economics in great britain calculation for the standard commodity assumptions of piedro sraffa on the cycle of production functions of the rate of return ebsco

specialization patterns and reduction of co2 emissions an empirical investigation of environmental preservation and economic efficiency abstract we study the effects that different degrees of specialization in the production of the global net output of a group of countries might have on the emissions of co2 the analysis is based on the sraffian notion of subsystems which allows us to study what the input output table of a country would look like under different hypotheses on the allocation of the available resources we use the wiod input output tables and the related environmental accounts for 1995 2009 we show that the environmental benefits deriving from appropriate specialization patterns could be substantial moreover our results suggest that co2 reduction is not necessarily detrimental to economic activity on the contrary with the appropriate exploitation of suitable patterns of specialization co2 reduction and gdp growth may even be pursued jointly

fund flow versus flow flow in production theory reflections on georgescu roegen s contribution abstract the paper discusses nicholas georgescu roegen s contribution to production theory comparing it with the contributions of john von neumann and piero sraffa and emphasizing the problem of the choice of technique it is shown that georgescu roegen s fund flow approach in which fixed capital is taken to be an immutable agent can be misleading and cannot address issues that are easily handled by the alternative flow flow approach that reduces fixed capital to circulating within a joint products framework and allows adequate treatment of the wear and tear of machines as well as the problem of capital utilization

cooperative game theory approach to allocating benefits of horizontal cooperation abstract logistics costs in general and transportation costs in particular represent a large fraction of the operating costs of many companies one way to try to reduce these costs is through horizontal cooperation among shippers thus when the transportation needs of two or more companies are merged their collective transportation requirements can be met at lower cost the attainable cost savings are due to economies of scale which translate into cheaper rates due to increased negotiation power use of larger vehicles and bundling of shipments in this paper a linear model is presented and used to study the cost savings that different companies may achieve when they merge their transportation requirements on the one hand solving this optimization model for different collaboration scenarios allows testing and quantifying the synergies among different potential partners thus identifying the most profitable collaboration opportunities on the other the problem of allocating the joint cost savings of the cooperation is tackled using cooperative game theory the proposed approach is illustrated with an example in which different cooperative game solution concepts are compared extensive numerical experiments have also been carried out to gain insight into the properties of the corresponding cost savings game and the behavior of the different solution concepts

portfolio choice consumption and welfare when rates of return are related to prices of consumer goods abstract this paper generalizes the two period model of portfolio selection under uncertainty by decomposing the aggregate consumption in each period into several goods the prices of some of which are positively related to rates of return on some assets the effect of these relations on the choice of portfolio is analyzed the effects on the chosen portfolio of a lateral translation and of a mean preserving increase in the risk of the distributions of the random variables are analyzed a generalization of the hicks compensation to the case where the prices of consumer goods are positively related to rates of return on assets is offered and welfare implications are drawn

the quantity flexibility contract and supplier customer incentives consider a supply chain consisting of two independent agents a supplier e g a manufacturer and its customer e g a retailer the latter in turn serving an uncertain market demand to reconcile manufacturing procurement time lags with a need for timely response to the market such supply chains often must commit resources to production quantities based on forecasted rather than realized demand the customer typically provides a planning forecast of its intended purchase which does not entail commitment benefiting from overproduction while not bearing the immediate costs the customer has incentive to initially overforecast before eventually purchasing a lesser quantity the supplier must in turn anticipate such behavior in its production quantity decision this individually rational behavior results in an inefficient supply chain this paper models the incentives of the two parties identifying causes of inefficiency and suggesting remedies particular attention is given to the quantity flexibility qf contract which couples the customer s commitment to purchase no less than a certain percentage below the forecast with the supplier s guarantee to deliver up to a certain percentage above under certain conditions this method can allocate the costs of market demand uncertainty so as to lead the individually motivated supplier and customer to the systemwide optimal outcome we characterize the implications of qf contracts for the behavior and performance of both parties and the supply chain as a whole

a ricardo sraffa paradigm comparing gains from trade in inputs and finished goods here is how the 1817 ricardo comparative advantage trade benefit analysis has to be modified to take account of post 1960 sraffian benefits from capital using technologies by bringing j s mill s demand model up to date in terms of its implicit geometric mean money metric utility specific measurements for real net national product are calculated to partition sources of welfare gains from output enhancements and taste preference accommodations in scenarios of 1 trade between equals 2 trade between poor and rich nations and 3 for biased inventions that enable a poor country to take over production of items in which formerly the rich place enjoyed comparative advantage history of economic doctrine is mined to advance today s frontier of scientific knowledge a forward looking function for whig history

labour values prices of production and the missing equalisation tendency of profit rates evidence from the german economy during recent years several empirical studies have found that deviations from labour values to market prices are quite small however most of these articles do not offer a detailed reason for this result in this paper two theoretical justifications of the labour theory of value are brought together with some data concerning labour values prices of production and market prices on the basis of german input output tables from 2000 and 2004 in addition the statistical characteristics of profit rates are analysed both of the theoretical arguments are much in line with the empirical observations because there is only a slight transformation tendency and at the same time profit rates and capital intensity are negatively correlated moreover during the period under observation the german economy seems to be in a state of statistical equilibrium copyright oxford university press

quantitative empirical research in marxist political economy a selective review this paper surveys quantitative empirical research in some key areas of marxist political economy following an introductory section on the value controversy the paper surveys quantitative empirical research on the following topics a marxist national accounts b classical marxist theory of relative prices c probabilistic political economy d profitability analysis and e classical marxian theories of growth and technical change i end by highlighting two important puzzles in the extant literature

the mirage of exchange rate regimes for emerging market countries this paper argues that much of the debate on choosing an exchange rate regime misses the boat it begins by discussing the standard theory of choice between exchange rate regimes and then explores the weaknesses in this theory especially when it is applied to emerging market economies it then discusses a range of institutional traits that might predispose a country to favor either fixed or floating rates and then turns to the converse question of whether the choice of exchange rate regime may favor the development of certain desirable institutional traits the conclusion from the analysis is that the choice of exchange rate regime is likely to be of second order importance to the development of good fiscal financial and monetary institutions in producing macroeconomic success in emerging market countries this suggests that less attention should be focused on the general question whether a floating or a fixed exchange rate is preferable and more on these deeper institutional arrangements a focus on institutional reforms rather than on the exchange rate regime may encourage emerging market countries to be healthier and less prone to the crises that we have seen in recent years

labour productivity and energy intensity in australia 1974 87 an input output analysis abstract energy and labour productivity in australia is examined using the notion of vertical integration in an input output framework results indicate a decline in productivity growth rates during the 1978 1982 period for both energy and labour energy productivity growth was negative during this period the productivity slowdown was pronounced in the natural resource sectors agriculture food products and minerals results indicate that movements in primary input efficiency are positively correlated suggesting that input complementarity may override substitution effects during macroeconomic shocks

profits equal surplus value on average and the significance of this result for the marxian theory of accumulation being a new contribution to engels prize essay competition based on random matrices and on manuscripts recently published in the mega for the first time marx s justification of his theory of surplus value in the face of unequal compositions of capital by interpreting total profits as a redistribution of surplus value is not correct in general however it is shown here that the equality holds if the input matrices are random and the labour theory of value holds in a sense to be specified on average manuscripts recently published for the first time confirm that to the end marx trusted his approach to the theory of value in that he continued to use the identity of the aggregates of capital and surplus in value and in price terms his insistence was rooted in his philosophy an attempt is made to clarify his use of a hegelian methodology by comparing hegel s and marx s approaches to the foundation of the infinitesimal calculus the article concludes with marx s late reconsiderations of his theory of the falling rate of profit which also continue to be based on the equality of profit and surplus value

jit purchasing vs eoq with a price discount an analytical comparison of inventory costs abstract the inventory costs of purchasing under economic order quantity eoq model with a quantity discount is determined and compared to the costs under just in time jit it is shown that at low levels of demand jit is the preferred method whereas eoq has the cost advantage for an item with a high demand the model also predicts that the higher the value of the item the carrying cost or the ordering cost associated with the eoq model and the smaller the quantity discount rate the wider will be the range of demand for which jit remains preferable

the demand for housing in spain an endogenous switching regression analysis housing demand in spain has been studied by using data disaggregated into primary and secondary housing demands it is found that demand for both types of housing area indeed related and that they are both considered necessities thus suggesting that their consumption ought to be modelled as a joint decision moreover it is found that traditional determinants of housing demand affect primary and secondary home demands differently these differences are attributable to the following economic rationales need for asset holdings diversifications relative high cost of home ownership versus rental in choice locations and differences in land demand intensity across regions in sum the findings suggest that policy makers in spain contrary to popular beliefs must consider secondary homes an integral part of households accommodation need