the decline of dominant firms 1905 1929 the theory of dynamic limit pricing implies that a firm maximizes its wealth by gradually sacrificing its dominant market share we extend the theory by simulation methods to show that higher structural entry barriers generally result in both higher profits and a slower sacrifice of market share the model is applied to 42 once dominant firms in u s manufacturing to explain jointly the declines of their market shares and the profit rates earned during 1905 1929 the statistical results agree substantially with the hypothesis that these firms behaved consistently with maximizing their wealth through dynamic limit pricing

a neoclassical model of the balance of payments this paper analyses the transitory and long run effects of devaluation and tariffs as well as the effects of alterations in the domestic money supply and the terms of trade for a small country on fixed exchange rates these issues are investigated in a self contained dynamic optimization model of the sort popularized by brock 1974 1975 familiar results in the trade literature are thereby explicated for the nonspecialist who is nonetheless familiar with brock s work there are some new results regarding the role played by income and substitution effects in determining the consequences of terms of trade shifts this paper introduces a perfect foresight optimizing model of the monetary approach to the balance of payments for a small country on fixed exchange rates the model is then used to analyse the effects on the balance of payments of devaluation of a tariff and of changes in the terms of trade the effects of devaluation tariffs and changes in the terms of trade have been analysed previously within the framework of nonoptimizing models dornbusch 1973 1980 and anderson and takayama 1977 have studied the effect of devaluation mussa 1974 1976 anderson and takayama 1978 1981 and batra and ramachandran 1980 have studied the effect of tariffs and rodriguez 1976 batra and ramachandran 1980 and anderson and takayama 1981 have studied the effect of changes in the terms of trade optimizing models in which real balances appear as an argument in the utility function are increasingly popular in international economics the general approach was inspired by sidrauski 1967 and brock 1974 1975 recent contributions to the trade literature using this framework include dornbusch and mussa 1975 calvo 1980 1981 liviatan 1981 and obstfeld 1981 a 1981 b 1982 the purpose of this paper is to translate the conventional small country fixed exchange rate model into this framework the results are generally congruent with those in the nonoptimizing literature which suggests that the money in the utility function approach works well here compared to the nonoptimizing literature the real advance is that price adjustment and price expectations are endogenous and rational among the benefits are that one need not postulate the ad hoc price adjustment mechanism used by anderson and takayama nor the backward looking and hence irrational permanent income formulation used by rodriguez furthermore there has been controversy over the balance of payments effects of a shift in the terms of trade while the model s predictions on this issue are theoretically ambiguous the model shows that the answer depends crucially on the magnitude of income effects this clarifies the conditions required for a terms of trade shift to improve or worsen the balance of payments

generic advertising in an asymmetric cournot oligopoly we examine how benefits of mandated generic advertising vary with firm size in an asymmetric cournot oligopoly market generic advertising funded through a mandatory assessment changes demand but also increases firms costs the effect on a firm s profits depends upon the nature of the change in demand and the company s market share situations are identified in which generic advertising 1 disproportionately favors large small firms 2 decreases profits and 3 increases decreases social welfare our findings explain the concerns that are often raised on small firms being disadvantaged by generic advertising we discuss implications for policy and for firms advertising strategies copyright 2010 oxford university press

adaptive ordering and pricing for perishable products we consider the combined problem of pricing and ordering for a perishable product with unknown demand distribution and censored demand observations resulting from lost sales faced by a monopolistic retailer we develop an adaptive pricing and ordering policy with the asymptotic property that the average realized profit per period converges with probability one to the optimal value under complete information on the distribution the pricing mechanism is modeled as a multiarmed bandit problem while the order quantity decision made after the price level is established is based on a stochastic approximation procedure with multiplicative updates

interest rates and currency prices in a two country world abstract this paper is a theoretical study of the determination of prices interest rates and currency exchange rates set in an infinitely lived two country world which is subject both to stochastic endowment shocks and to monetary instability formulas are obtained for pricing all equity claims nominally denominated bonds and currencies and these formulas are related to earlier closely related results in the theories of money finance international trade

estimating market power of u s dairy cooperatives in the fluid milk market a structural econometric model of vertical relationships is adopted to identify pricing behavior in the supply chain for fluid milk in the united states the model consists of a system of equations that allows estimation of oligopoly power of dairy co operatives and downstream firms exploiting federal milk marketing order regulations to identify co operatives marginal cost a key finding is that co operatives use their market power to raise the farm price of milk by almost 9 above marginal cost resulting in an income transfer of more than 600 million per year in markets regulated by federal milk marketing orders copyright 2012 oxford university press

the trade balance and real exchange rate under currency substitution abstract it is demonstrated that the calvo and rodriguez 1977 results hold up in a utility maximizing model contrary to the claim of liviatan 1981 it is argued that liviatan s conclusions are based on a mistaken assumption having rescued calvo rodriguez from liviatan it is then shown that the calvo rodriguez results are dependent on two special assumptions that there is only one foreign asset traded and its real return is zero the paper also shows that there is an avenue for foreign inflation transmission under perfectly floating exchange rates even when goods prices are perfectly flexible however the direction of response of real variables is in general ambiguous

money output and the trade balance theory and evidence this paper develops a two country equilibrium model of the world economy under floating exchange rates and draws out its implications for co movements of money output and the trade balance the predictions of this model are then compared with those of a fixed price keynesian version of the mundell fleming model the predictions of the two models for co movements of money output and the trade balance are shown to differ on almost all counts empirical evidence on the effects of anticipated and unanticipated changes in money growth rates on output and the trade balance from the recent canadian experience with floating rates is presented and discussed this evidence generally speaking is consistent with the implications of the equilibrium model

exchange rate determination interest rates and an integrative approach to the demand for money abstract this paper presents a simple framework in which the money in the utility function miuf and the cash in advance cia approaches to the demand for money can be seen as equivalent this integrative approach to money demand is extended to a two country world and the equilibrium relationship between terms of trade exchange rates and interest rates implied by the underlying stochastic structure of the economy is discussed a theory of currency substitution is presented

real exchange rates under alternative nominal exchange rate systems abstract the paper develops an equilibrium model of the determination of exchange rates the relative price of nontraded goods and the current account the focus is on the effects of various real and nominal disturbances and the conditions under which the nominal exchange rate system is neutral with respect to real variables in the economy the model demonstrates an assymetry in the roles of trade and nontraded goods in affecting exchange rates an econometric investigation of the raltion between the exchange rate system and the variability of real exchange rates provides some evidence against the neutrality hypothesis

terms of trade shock and the current account in a monetary economy over the period 1973 81 the terms of trade of non oil developing countries deteriorated at about 2 per cent per annum this was accompanied by an increase in current account deficits in excess of 3 per cent above what they had been in the previous decade see khan and knight 1983 for a discussion these authors find the terms of trade shocks the major cause of the deficits this has led to a renewal of interest in the effects of changes in terms of trade for a small open economy the conventional wisdom first put forward by laursen and metzler 1950 and harberger 1950 emphasized the fact that a terms of trade worsening lowered real income which in turn lowered savings and worsened the current account the laursen metzler effect the recent reappraisal was initiated by obstfeld 1982 he showed in an infinite horizon optimizing framework with perfect capital mobilizing that if the discount rate was a function of the level of utility surpluses and not deficits accompany an unanticipated and permanent terms of trade worsening the long run level of the discount rate is tied down by the given world rate of interest this in turn fixes the long run level of utility the terms of trade shock tends to lower the level of utility and agents save to offset this across steady states there is only a substitution effect on the other hand if the discount rate is fixed and equal to the world interest rate then the economy adjusts to the terms of trade shock by immediately lowering real expenditure by the same amount as the decline in real income so that the current account is always balanced svensson and razin 1983 showed that in a two period framework this does not necessarily happen for the infinite horizon case they showed that if preferences were separable over time and the discount rate was increasing in instantaneous utility then obstfeld s results were indeed obtained in a two period overlapping generations model the results could be modified owing to the fact that human wealth and non human wealth are not perfect substitutes and a terms of trade shock affects these differently see matsuyama 1988 for a discussion but it is still true that an unanticipated permanent terms of trade shock has a one shot effect on the current account unless some ad hoc costs of adjustment are introduced see e g persson and svensson 1985 and matsuyama 1988 the uncertain lifetime model see e g frenkel and razin 1988 and matsuyama 1987 generates non trivial

aggregate spending and the terms of trade is there a laursen metzler effect this paper investigates the spending and current account effects of terms of trade shifts in a model where households maximize utility over an infinite planning period in the framework developed here an economy specialized in production must experience a fall in aggregate spending and a current surplus as a result of an unanticipated permanent worsening in its terms of trade the paper s model thus provides a setting in which the current account deficit predicted by laursen and metzier harberger and others fails to materialize

preying for time the recent antitrust policy literature which seeks to define predatory pricing contains a flood of proposals which have pervasively transformed an entire body of law 1 one theme of this literature is that a readily anticipatable standard should be established so that firms will not fear being sued for normal competitive responses another is that since predation is presumed to be rare the standard should be lax so as to minimize the possibility of stifling competition in the overwhelming majority of more competitive markets perhaps the most striking feature of these arguments is the omission of any analysis of predatory behavior when business firms are sophisticated and rational mcgee i980 pp 295 6 for example points out that predation only pays if the present discounted value of future high prices exceeds the costs of suffering today s low prices but if this is so for the monopolist then why not for the competitor

currency prices terms of trade and interest rates a general equilibrium asset pricing cash in advance approach currency prices terms of trade and interest rates a general equilibrium asset pricing cash in advance approach

market structure entry and performance in korea this paper applies a recursive model of structure entry performance with structural feedbacks to sixty two korean manufacturing industries for 1976 81 the results strongly support the market power hypothesis the results also indicate that despite active government intervention the invisible hand is working structure is evolving as expected with high profits leading to entry and consequently lower profits however there is little support for limit pricing hypotheses in this explosively growing economy copyright 1990 by mit press

the tobin tax asset accumulation and the real exchange rate abstract we extend a standard model of exchange rate determination in a small open economy to examine the general equilibrium consequences of a tax on foreign assets the model 1 incorporates asset market clearing at a point in time 2 accounts for asset accumulation over time by way of trade imbalances and the government s financing needs and 3 broadens the government s policy options to include a tariff on the traded good and a tax on foreign assets a capital tax results in a transitory trade deficit because agents shift to home assets their decumulation of foreign assets is mirrored in a trade deficit

currency substitution and the real exchange rate the utility maximization approach abstract this paper studies the currency substitution hypothesis with rational expectations in terms of a sidrauski type model where domestic and foreign money enter the utility function it shows that contrary to liviatan 1981 the approach does not necessarily contradict calvo and rodriguez 1977 furthermore the impact of monetary stabilization policy is fully characterized with flexible and pre fixed rates for an extension of dornbusch and mussa 1975 a brief analysis of the optimal quantity of money is also provided

technical note nonparametric data driven algorithms for multiproduct inventory systems with censored demand we propose a nonparametric data driven algorithm called ddm for the management of stochastic periodic review multiproduct inventory systems with a warehouse capacity constraint the demand distribu

a tip of the iceberg the probability of catching cartels summary reliable estimates of crime detection probabilities could help in designing better sanctions and improve our understanding of the efficiency of law enforcement for cartels we only have limited knowledge on the rate at which these illegal practices are discovered in comparison to previous works this paper offers a more parsimonious and simple to use method to estimate time dependent cartel discovery rates while allowing for heterogeneity across firms it draws on capture recapture methods that are frequently used in ecology to make inferences on various wildlife population characteristics an application of this method provides evidence that less than a fifth of cartelising firms are discovered copyright 2013 john wiley sons ltd

on the indeterminacy of equilibrium exchange rates in this paper we consider a particular international economic policy regime the laissez faire regime the distinguishing features of which are unrestricted portfolio choice and floating exchange rates and as we show this regime although favored by many economists is not economically feasible it does not have a determinate equilibrium that is an implication of an overlapping generations model more basically it is an implication of the notion that money is wanted only in order to accomplish trades

crawling peg inflation hedges and exchange rate dynamics this paper stresses the effects of currency substitution and speculation on inflation hedges on the relative price of home goods in the two sector general equilibrium portfolio balance model examining the overshooting hypothesis of exchange rates in association with the overshooting phenomenon of price of inflation hedges it has shown that exchange rate undershooting is plausible with the significant overshooting of the price of inflation hedges when domestic residents hold only domestic money and inflation hedges however the impact of currency substitution is strong enough to lead to exchange rate overshooting if the domestic residents have access to foreign currency

government spending and the real exchange rate i study the effect of government spending on the real exchange rate in an open economy version of the sidrauski model with a time varying rate of time preference that introduces complementarity between consumption at different points in time i show that a balanced budget fiscal expansion causes a real depreciation and a current account surplus if the expansion falls on traded goods if the increase falls instead on nontraded goods both the stylized results of a real appreciation and a current account deficit and the perverse result of an appreciation and a surplus can occur

devaluation levels versus rates abstract in a context of infinitely lived families a la sidrauski where consumers are lump sum compensated for the inflation tax and there is no capital mobility it is shown that a devaluation improves while an increase in the rate of devaluation deteriorates the balance of payments

monetary restraint and the exchange rate this paper examines the short run response of the exchange rate and the level of interest rates to an unanticipated change in monetary policy l in particular a sudden reduction in the rate of monetary expansion is postulated in an economy with a floating exchange rate will the exchange rate overshoot its long run equilibrium path as in the case of a discrete change in the nominal money stock will interest rates traditional indicators of monetary conditions rise in response to this move towards monetary restraint despite a growing literature on the determination of exchange rates and a general acceptance of the key role of monetary policy in influencing the foreign exchange market this particular question has not received much attention this is probably because authors have preferred to examine the normative question of optimal exchange market intervention policy 2 in section i we take the simplest case where the exchange rate is determined by the actions of speculators with perfect foresight or equivalently of riskneutral speculators with rational expectations the long run equilibrium or steady state path where all prices adjust instantaneously is contrasted with the exchange rate path consistent with momentary equilibrium subject to the slow adjustment of some domestic prices we show that this latter path which will be referred to as the momentary equilibrium path or where there is no risk of confusion simply as the equilibrium path need not overshoot the steady state path nevertheless the nominal interest rate will always fall in this case in section ii we show that risk aversion on the part of speculators is likely to reduce the incidence of overshooting and should moderate the tendency of the interest rate to fall 3 although they are still allowed myopically rational expectations speculators in section iii make transitory errors in forecasting the long run equilibrium this behaviour can lead to the intuitively plausible pattern of an initial increase in nominal interest rates and a gradual rather than sudden response of the exchange rate this discussion of a variety of models allows an interplay between theory and practical experience on the one hand doubt is cast on the realism of certain models which give implausible results while on the other hand models that pass the test of plausibility provide an insight into the forces governing the reaction of financial market variables to policy change

the capital inflows problem revisited a stylized model of southern cone disinflation in the late 1970s countries in latin america s southern cone initiated attempts to lower domestic inflation rates through the progressive reduction of a preannounced rate of exchange rate devaluation the stabilization programs gave rise to massive capital inflows real exchange rate appreciation and current account deficits this paper develops a stylized intertemporal framework in which the effects of a credible preannounced disinflation scheme can be studied it is shown that even when agents have perfect foresight and markets clear continuously the capital inflows phenomenon and the associated real appreciation may result while unanticipated permanent inflation changes are neutral in the paper anticipated inflation is neutral only in exceptional circumstances a preannounced disinflation operates by altering the path of an expenditure based real domestic interest rate that depends on expected changes in the prices of liquidity services and nontradable consumption goods

endogenous real exchange rate fluctuations in an optimizing open economy model abstract this paper constructs a simple intertemporal model of a small open economy inhabited by forward looking agents in which endogenous fluctuations in the real exchange rate can arise in equilibrium i e fluctuations that are not linked to movements in economic fundamentals the key condition for the main results is the assumption that the marshall lerner condition does not hold i e that the country s exports and imports are inelastic to its real exchange rate it is shown that given that the marshall lerner condition fails there exist periodic equilibria and or stationary sunspot equilibria in the neighborhood of the stationary state

dollarization and inflation in a two country optimization model abstract in a two country two currency model this paper examines the conditions of dollarization analyzes the effect of government inflation finance and studies the strategic interdependence of different currency inflation jel f30

currency substitution foreign inflation and terms of trade dynamics this paper incorporates rational expectations full price flexibility and currency substitution into the usual small economy model taking explicit account of inflation abroad not only will the steady state terms of trade be affected by an increase in the rate of monetary expansion when the inflation rate abroad is assumed to be nonzero but its dynamic path may also be different from the usual case in which inflation abroad is ignored it has been shown that if the import demands are relatively inelastic the terms of trade will undershoot their equilibrium value if the import demands are elastic the terms of trade will overshoot the key to these diametrically opposite results is the degree of ultimate deterioration in the terms of trade which in turn turn on the size of the two import demand elasticities

financial dollarization and systemic risks new empirical evidence abstract this paper explores the persistence of financial dollarization in a group of 79 economies with different levels of development our main hypothesis is that a high level of domestic debt combined with default risk explains this persistence even after a decline in inflation rates using the generalized method of moments gmm in a panel data analysis our results show that inflation risks caused by increasing probability of default account for financial dollarization more than inflation rate itself after the decrease in inflation rates the foreign currency denominated deposits remain large because of the high debt to gdp ratios particularly in speculative grade economies high public indebtedness leads to expectations of default dollarization is a rational response to the future inflation associated with investors expectations of default observed in highly indebted economies

currency trade and capital flows in general equilibrium this paper studies currency trade and capital flows in a one good general equilibrium exchange model with utility maximizing individuals the effects of both monetary and endowment shocks are examined it is shown that both can cause trade and capital flows the model is a two country version of the twostate optimizing model used recently by leroy 1984a 1984b to study the effects of monetary and endowment shocks in a closed economy each country issues its own currency real and nominal bonds and equity shares each receives an endowment of a perishable consumption good the demand for money is generated by entering real balances into the utility function as in dornbusch and mussa 1975 calvo 1981 liviatan 1981 obstfeld 1981a 1981b 1982 razin 1981 stockman 1983 and michener 1984 each country holds both currencies an assumption made only by liviatan both monetary growth and endowments of the consumption

determining market power exertion between buyers and sellers empirical techniques commonly used in industrial organization to measure market power exertion typically assume imperfectly competitive behaviour by firms on only one side of the market firms on the other side are assumed to be perfectly competitive in this paper we extend traditional neio methods by developing a method to estimate market power exertion when firms on both sides have potential market power using monte carlo simulations we find that the model correctly estimates market power exercised by firms on either or both sides of a market and also correctly estimates firms technology parameters when applied to the us leaf tobacco market findings indicate that cigarette manufacturers exert some monopsony power in purchasing leaf tobacco while producers organized as a cartel exhibit no countervailing monopoly market power copyright 2000 john wiley sons ltd

monetary expansion and real exchange rate dynamics this paper examines the effect of a change in the rate of monetary expansion on the dynamics of the real exchange rate under fully flexible domestic prices and a floating exchange rate the model is similar in structure to an ealier paper by calvo and rodriguez the main difference being that in our model consumers have an infinite planning horizon and long run perfect foresight one of the main findings is that an increase in the rate of monetary expansion has the impact effect of creating a real appreciation of the exchange rate and a deterioration of the balance of payments contrary to the results of calvo and rodriguez

adaptive data driven inventory control with censored demand based on kaplan meier estimator using the well known product limit form of the kaplan meier estimator from statistics we propose a new class of nonparametric adaptive data driven policies for stochastic inventory control problems we focus on the distribution free newsvendor model with censored demands the assumption is that the demand distribution is not known and there are only sales data available we study the theoretical performance of the new policies and show that for discrete demand distributions they converge almost surely to the set of optimal solutions computational experiments suggest that the new policies converge for general demand distributions not necessarily discrete and demonstrate that they are significantly more robust than previously known policies as a by product of the theoretical analysis we obtain new results on the asymptotic consistency of the kaplan meier estimator for discrete random variables that extend existing work in statistics to the best of our knowledge this is the first application of the kaplan meier estimator within an adaptive optimization algorithm in particular the first application to stochastic inventory control models we believe that this work will lead to additional applications in other domains

efficiency and a simple model of exchange rate determination abstract a monetary model has no intrinsic dynamics so the intertemporal behavior of exchange rates spot and forward depend entirely upon the time processes of the exogenous variables for typical values of interest elasticities of money demand only if all shocks are permanent do exchange rates follow random walks recently changes in relative outputs and money supplies in the canadian us context have evidenced serial correlation so that shocks are not exclusively permanent ones none the less exchange rates have followed a random walk this suggests that the monetary model is an inappropriate specification and that models which pay attention to the choice of currency of denomination deserve greater attention

monetary autonomy and exchange rate dynamics under currency substitution abstract this paper uses a two country model to demonstrate that currency substitution is a channel for the international transmission of monetary disturbances under flexible exchange rates in the long run the division of world real wealth and consumption and real exchange rates depend on the growth rates of both monies but inflation of prices denominated in a particular currency depends only on the rate of growth of that money in the short run currency substitution combined with perfect foresight can be responsible for overshooting in the exchange rate in both price levels in real exchange rates and in national levels of real wealth and consumption

cartel overcharges an empirical analysis abstract using 406 overcharge estimates the study analyzes the impact of cartel characteristics and the market environment on the magnitude of overcharges attained by cartels in different geographic markets and during six antitrust law regimes starting from the 18th century the median overcharge achieved by cartels is 20 percent of selling price as predicted by cartel theory market structure is an important determinant of the overcharge level markets where cartels have high market shares tend to have higher overcharges the number of cartel participants and the size inequality among them are inversely related to the overcharge level international cartels impose higher overcharges than domestic cartels overcharges attained in the us and european markets tend to be lower than overcharges achieved in the asian markets and the rest of the world results on the impact of changes in the antitrust law environment over time on the size of cartel overcharges are mixed however there is some evidence indicating that the lowest overcharges are associated with the latest antitrust law period

capital mobility and devaluation in an optimizing model with rational expectations this paper examines the effects of ex change rate policies when individuals maximize lifetime utility on the basis of rational expectations about the future the economy studied is one in which the authorities allow free mobility of capital under a crawling peg exchange rate regime many industrializing economies have adopted a crawling peg as a means of reconciling disparate inflation rates at home and abroad and some recent efforts to use the rate of crawl as an instrument of anti inflation policy have attracted considerable interest see carlos diaz alejandro tools similar to those employed here have been applied by guillermo calvo forthcoming to study this type of exchange rate management under conditions of capital immobility this abstract was borrowed from another version of this item

stalking information bayesian inventory management with unobserved lost sales retailers are frequently uncertain about the underlying demand distribution of a new product when taking the empirical bayesian approach of scarf 1959 they simultaneously stock the product over time and learn about the distribution assuming that unmet demand is lost and unobserved this learning must be based on observing sales rather than demand which differs from sales in the event of a stockout using the framework and results of braden and freimer 1991 the cumulative learning about the underlying demand distribution is captured by two parameters a scale parameter that reflects the predicted size of the underlying market and a shape parameter that indicates both the size of the market and the precision with which the underlying distribution is known an important simplification result of scarf 1960 and azoury 1985 which allows the scale parameter to be removed from the optimization is shown to extend to this setting we present examples that reveal two interesting phenomena 1 a retailer may hope that compared to stocking out realized demand will be strictly less than the stock level even though stocking out would signal a stochastically larger demand distribution and 2 it can be optimal to drop a product after a period of successful sales we also present specific conditions under which the following results hold 1 investment in excess stocks to enhance learning will occur in every dynamic problem and 2 a product is never dropped after a period of poor sales the model is extended to multiple independent markets whose distributions depend proportionately on a single unknown parameter we argue that smaller markets should be given better service as an effective means of acquiring information

cooperation for monopolization an empirical analysis of cartelization this paper examines the ability of a large numbers cartel to raise price cost margins the cartel in question is a dairy cooperative associated milk producers inc ampi with more than 30 000 members we develop a model of spatial limit pricing that we test using the method of seemingly unrelated regressions adjusting for serial correlation our results suggest that the cartel successfully obtained and used market power and that its power was proportional to its market share in contrast after an antitrust consent decree margins fell significantly and were no longer related to market shares these results are robust under both pooled and market fixed effects analysis copyright 1994 by mit press

a new methodology linking concentration dynamics to current and steady state profits examining korean industrial policy during take off abstract we model the dynamics of industrial structure and market power using korean manufacturing data during the take off period 1978 82 structure conduct performance scp methodologies have been criticized for using accounting data and because a few superior firms may have greater shares and greater profits both are argued to present possible spurious correlations between concentration and profits this paper follows earlier work which shows that market structure responds to observed accounting profits as if these were accurate indices of real profits and not as if leading firms are perceived to have unmatchable advantages the methodological contribution of this model is a new latent variable for steady state profits derived from the speed of structural adjustment long run profits are identified by the hypothesis that structural adjustment will be more rapid when industries are farther from steady state levels we analyze the long run profits latent variable finding strong support for this hypothesis the speed of adjustment is greater for positive and negative deviations from steady state structure we show that the profits and structural adjustment relationship is non monotone the scp criticisms above are based on spurious correlations which are monotone in profits and structure positing spurious correlations which are at the same time monotone in structure and non monotone in structural adjustment seems less plausible than accepting the scp results which are consistent with both our analysis also is new in that it is the first direct econometric analysis of korean industrial policy during its take off years we note that in korea unlike elsewhere industrial policy was hypothesized to lead to concentration and market power in the popular press and by professional economists ours is the first direct econometric analysis of this hypothesis and we find it supported

nominal prices and interest rates in general equilibrium endowment shocks the outstanding problem of neoclassical monetary theory has been to determine the effect of changes in the money stock on nominal prices and interest rates the classic result is that in the absence of money illusion contracts fixed in nominal terms and other such impedimenta money is neutral thus a doubling of the money stock results in a doubling of the nominal price level and in no change in nominal interest rates except at most for a temporary liquidity effect while the price level is rising to its new level during the adjustment period the nominal interest rate might temporarily drop this neutrality result has conventionally been proved in a static framework in intertemporal models it is necessary to distinguish between static neutrality and dynamic neutrality if a model displays dynamic neutrality fluctuations in the money stock immediately induce a proportional change in the nominal price level and no change in nominal interest rates or any real variable this property is different from and stronger than static neutrality which in dynamic models states only that if the money stock at all dates is doubled so will be the price level at all dates the effects of exogenous shocks in the monetary growth rate on nominal prices and interest rates are analyzed a representative individual rational expectations framework is adopted and a demand for money is generated by entering money in the utility function the effects of monetary shocks on inflation and interest rates are shown to depend on the autocorrelation of the monetary growth rate for example under serial independence the inflation rate equals the monetary growth rate and the nominal interest rate is nonrandom while under positive negative autocorrelation the nominal interest rate is affected positively negatively by positive growth rate shocks i am grateful to the staff of the federal reserve bank of philadelphia to the finance groups at the university of southem california and virginia polytechnic institute and to c j lacivita dan peled john seater and jon sonstelie for valuable comments on earlier drafts

a model of exchange rate dynamics this model treats the exchange rate as an asset price that depends on expectations concerning exogenous real and monetary factors that will affect relative prices and absolute price levels in future periods changes in exchange rates reflect both expected changes in these exogenous factors and changes in expectations occasioned by new information the model explains the random component in exchange rate behavior the source of divergences from purchasing power parity the anticipatory response of exchange rates to future expected disturbances and the causes of exchange rate overshooting

dynamics of a floating exchange rate regime we study the full equilibrium dynamics of a two country world economy with a floating exchange rate traded and nontraded goods and explicit modeling of the use of money the resulting exchange rate equation depends on several details of the economic structure such as the supply structure and propensities to spend on various goods although real exchange rate movements have the usual association with the current account the ordinary exchange rate may appreciate or depreciate when there are deficits on current account even when the quantities of money do not change deviations from purchasing power parity and the fisher equation are shown to be the rule rather than the exception

tariffs quotas and welfare in a monetary economy abstract the effects of tariffs and quotas on welfare in a monetary economy are considered it is shown that while both policies improve the balance of payments they have different lifetime welfare implications even when they are equivalent in the long run the speed of adjustment is shown to be more rapid under a tariff than under a quota therefore adjustment costs associated with changes in money holdings are lower under a tariff while those associated with changes in consumption are higher simulation results are used to examined the implications of various structural parameters for lifetime utility under the two policies

macroeconomic policy exchange rate dynamics and optimal asset accumulation the paper develops a model of exchange rate and current account determination for a small economy peopled by infinitely lived utility maximizing households in this setting a central bank purchase of foreign exchange has no real effects when central bank foreign reserves earn interest at the world rate and proceeds are returned to the public in contrast an increase in the monetary growth rate does have real effects even in the long run the model developed here implies that an increase in government spending may lead to a surplus on current account the external adjustment process predicted by the model is one in which consumption real balances and external assets all rise or fall simultaneously