factors in the adoption of industial development incentives by states the continued proliferation of state indusrial development incentive programmes in the absence of any evidence of their effectiveness raises several interesting policy questions first why do states continue to adopt new incentive programmes and secondly what factors determine the type of new incentives that are adopted these questions are investigated through the use of a set of empirical logit models of states decisions to adopt new industrial development incentive programmes in these models the decisions are hypothesized to be influenced by the states s economic and fiscal condition the state s relative advantages and disadvantages with respect to important industrial location factors and the incentive packages of the subject state and its neighbours the results provide limited support for the frequently advanced but previously untested hypothesis that a primary determinant of a state s incentive adoption decision is the recent adoption of similar incentivies in neighbouring states the dec

optimal policies for a capacitated two echelon inventory system this paper demonstrates optimal policies for capacitated serial multiechelon production inventory systems extending the clark and scarf 1960 model to include installations with production capacity limits we demonstrate that a modified echelon base stock policy is optimal in a two stage system when there is a smaller capacity at the downstream facility this is shown by decomposing the dynamic programming value function into value functions dependent upon individual echelon stock variables we show that the optimal structure holds for both stationary and nonstationary stochastic customer demand finite horizon and infinite horizon results are included under discounted cost and average cost criteria

critical number policies for inventory models with periodic data we consider an infinite horizon in problem with stochastic demands where the data vary periodically karlin karlin s 1960a dynamic inventory policy with varying stochastic demands management sci 6 231 258 karlin s 1960b optimal policy for dynamic inventory process with stochastic demands subject to seasonal variations j siam8 611 629 shows that a periodic critical number policy is optimal and presents an algorithm for computing the critical numbers assuming discounted costs here we develop an alternative conceptually simpler approach to these problems the results include a proof of the optimality of such policies for the average cost case and a qualitative description of the behavior of the optimal policy as smoothing fluctuations in the data

managing a noncooperative supply chain with limited capacity we consider a two stage serial supply chain with capacity limits where each installation is operated by managers attempting to minimize their own costs a multiple period model is necessitated by the multiple stages capacity limits stochastic demand and the explicit consideration of inventories with appropriate salvage value functions a markov equilibrium policy is found intuitive profit dominance allows for existence of a unique equilibrium solution which is shown to be a modified echelon base stock policy this equilibrium policy structure is sustained in the infinite horizon a numerical study compares the behavior of the decentralized system with the first best integrated capacitated system the performance of this decentralized system relative to the integrated system across other parameters can be very good over a broad range of values this implies that an acceptable system performance may be attained without the imposition of a contract or other coordinating mechanism which themselves may encounter difficulties in implementation in the form of negotiation execution or enforcement of these agreements we find instances where tighter capacities may actually enhance channel efficiency we also examine the effect of capacity utilization on the system suboptimality

using a metropolitan area econometric model to analyse economic development proposals this paper shows how an integrated input output and econometric model has been developed and used by a municipal government to evaluate economic development proposals the model simulates the impact of attracting or retaining various types of new businesses and calculates fiscal impacts for state and local governments it can be used to determine a government s bottom line tax concession or how much it is witting to give up to attract new businesses into the community we present examples of proposals evaluated using our louisville metropolitan area econometric model and suggest that the methodology is readily adaptable to other urban areas

optimal policies for multiechelon inventory problems with markov modulated demand this paper considers a multistage serial inventory system with markov modulated demand random demand arises at stage 1 stage 1 orders from stage 2 etc and stage n orders from an outside supplier with unlimited stock the demand distribution in each period is determined by the current state of an exogenous markov chain excess demand is backlogged linear holding costs are incurred at every stage and linear backorder costs are incurred at stage 1 the ordering costs are also linear the objective is to minimize the long run average costs in the system the paper shows that the optimal policy is an echelon base stock policy with state dependent order up to levels an efficient algorithm is also provided for determining the optimal base stock levels the results can be extended to serial systems in which there is a fixed ordering cost at stage n and to assembly systems with linear ordering costs

lower bounds for multi echelon stochastic inventory systems we establish lower bounds on the minimum cost of managing certain production distribution networks with setup costs at all stages and stochastic demands these networks include serial assembly and one warehouse multi retailer systems we obtain the bounds through novel cost allocation schemes we evaluate the bounds performance for one warehouse multi retailer systems by comparing them with simple heuristic policies the bounds are quite tight for systems with a small number of retailers we also present simplified proof of known optimality results for serial and assembly systems

a capacitated production inventory model with periodic demand for a single product single stage capacitated production inventory model with stochastic periodic cyclic demand we find the optimal policy and characterize some of its properties we study the finite horizon the discounted infinite horizon and the infinite horizon average cases a simulation based optimization method is provided to compute the optimal parameters based on a numerical study several insights into the model are also provided

optimal joint inventory and transshipment control under uncertain capacity in this paper we address the optimal joint control of inventory and transshipment for a firm that produces in two locations and faces capacity uncertainty capacity uncertainty e g due to downtime quality problems yield etc is a common feature of many production systems but its effects have not been explored in the context of a firm that has multiple production facilities we first characterize the optimal production and transshipment policies and show that uncertain capacity leads the firm to ration the inventory that is available for transshipment to the other location and characterize the structure of this rationing policy then we characterize the optimal production policies at both locations which are defined by state dependent produce up to thresholds we also describe sensitivity of the optimal production and transshipment policies to problem parameters and in particular explain how uncertain capacity can lead to counterintuitive behavior such as produce up to limits decreasing for locations that face stochastically higher demand we finally explore through a numerical study when the optimal policy is most likely to yield significant benefits compared to simple policies

a comparison of the economic development policies of county metropolitan and non metropolitan district councils local authorities in england and wales have become important participants in economic development policy this paper draws upon a comprehensive new date set covering the activities of the councils in the period 1990 92 the date set is unusual in that it allows the direct comparison of the activities of the three main groups of councils county councils metropolitan districts and non metropolitan districts the paper contrasts the degree of commitment to economic development policy and the range of initiatives of the three categories and compares the manner in which the three types of councils package their initiatives in order to develop conherent strategies the analysis reveals significant differences between the categories of councils and shows that despite the rapid spread of economic development policy amongst councils in more prosperous areas during the 1980s the policies operated still depend on the economic and political characteristics of the councils

average cost single stage inventory models an analysis using a vanishing discount approach an important problem in the theory of dynamic programming is that of characterizing sufficient conditions under which the optimal policies for markov decision processes mdps under the infinite horizon discounted cost criterion converge to an optimal policy under the average cost criterion as the discount factor approaches 1 in this paper we provide for stochastic inventory models a set of such sufficient conditions these conditions unlike many others in the dynamic programming literature hold when the action space is noncompact and the underlying transition law is weakly continuous moreover we verify that these conditions hold for almost all conceivable single stage inventory models with few assumptions on cost and demand parameters as a consequence of our analysis we partially characterize for the first time optimal policies for the following inventory systems under the infinite horizon average cost criterion which have thus far been a challenge a capacitated systems with setup costs b uncapacitated systems with convex ordering costs plus a setup cost and c systems with lost sales and lead times

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 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

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

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

optimal control of a two station tandem production inventory system a manufacturing facility consisting of two stations in tandem operates in a make to stock mode after production items are placed in a finished goods inventory that services an exogenous poisson demand demand that cannot be met from inventory is backordered each station is modeled as a queue with controllable production rate and exponential service times the problem is to control these rates to minimize inventory holding and backordering costs optimal controls are computed using dynamic programming and compared with the kanban basestock and buffer control mechanisms that have been proposed for manufacturing facilities conditions are found under which certain simple controls are optimal using stochastic coupling arguments insights are gained into when to hold work in process and finished goods inventory comparable to previous studies of production lines in make to order and unlimited demand environments

periodic review lost sales inventory models with compound poisson demand and constant lead times of any length in almost all literature on inventory models with lost sales and periodic reviews the lead time is assumed to be either an integer multiple of or less than the review period in a lot of practical settings such restrictions are not satisfied we develop new models allowing constant lead times of any length when demand is compound poisson besides an optimal policy we consider pure and restricted base stock policies under new lead time and cost circumstances based on our numerical results we conclude that the latter policy which imposes a restriction on the maximum order size performs almost as well as the optimal policy we also propose an approximation procedure to determine the base stock levels for both policies with closed form expressions

labour time versus alternative value bases a research note this paper provides empirical support for the law of value understood as the proposition that embodied labor time is conserved in exchanges of commodities market prices are well correlated with the sum of direct and indirect labor content is it possible to produce equally good correlations by taking the sum of direct and indirect x content where x is some input other than labor time the authors repeat the analysis for electricity iron and steel and oil and show that the answer is no the high correlations in the case of labor time are therefore not a statistical artifact copyright 1997 by oxford university press

on sraffa s standard commodity the necessity of expressing the relative price of a commodity in terms of another commodity makes it impossible to distinguish that part of any change that can be ascribed to the characteristics of the commodity itself from the part of that change that is to be ascribed to the characteristics of the commodity of reference i e the numeraire ricardo 1817 was the first to point out this problem and the need to find an invariable measure of value but he was not able to solve the problem in 1960 sraffa suggested using a bundle of commodities that he called standard commodity to accomplish this function claiming that it was a standard of value invariant with respect to changes in the distribution of income but in sraffa s book there is no explicit proof of this claim this gave rise to many misunderstandings about the standard commodity and its role as invariable measure of value this paper proposes a proper definition of an invariable measure of value and then proves that the sraffa standard commodity does fulfil the requirements of this definition copyright 2004 oxford university press

fiscal pressure tax competition and the adoption of tax increment financing tax increment financing tif has been widely adopted as an economic development tool by municipalities this study estimates a structural probit model of municipal tif adoption decisions using data drawn from cities in indiana it provides empirical evidence that factors such as fiscal pressures tax competition economic distress industrial composition availability of alternative programmes and the expected gains in property values from the use of tif exert significant influence in a city s decision to adopt a tif programme after using an accurate measure of prior growth this analysis finds no empirical evidence to support the contention that growing cities are more likely to adopt tif

the deviation of production prices from labour values some methodology and empirical evidence contrary to what is expected from indirect evidence and two commodity hypothetical examples the evdie nce provided in this paper supports david ricardo s empirical proposi tion that relative prices of production are mainly determined by labo r value ratios the results obtained indicate that a 1 percent change in profit rate will cause relative prices to change up to 2 percent and as the profit rate on gross capital is approximately 5 percent o ne ends up with a 90 percent labor theory of value the empirical evidence refers to the yugoslav economy but the factors that determ ine the deviations considered turn out to be of the same order of mag nitude as in other economies copyright 1987 by oxford university press

on the present state of the capital controversy the post war capital controversy seems to have had two distinguishable stages thanks to the unambiguous phenomena of reswitching and reverse capital deepening the first stage was conclusive in discarding from pure theory the traditional versions of neoclassical theory that relied on the notion of capital as a single quantity subsequently however when the implications of those phenomena took centre stage in the controversy together with the reformulations of the theory which intended to do away with the quantity of capital several misunderstandings prevented i shall contend decisive progress in the analysis and we entered an inconclusive phase of the discussion