trends and cycles in historical gold and silver prices abstract the study proposes an alternative modelling specification for the real prices of gold and silver that allows the long run trend and cyclical behaviour to be modelled simultaneously by incorporating two differencing parameters in a fractional integration framework however we also consider the separate cases of a standard i d process with a pole or singularity at the zero frequency and a cyclical i d model that incorporates a single pole in the spectrum at a non zero frequency we use annual data spanning from 1833 to 2013 for gold and 1792 to 2013 for silver based on the more flexible model that permits a pole at both zero trend and non zero cycle frequencies we find that in general the estimates associated to the long run or zero frequency appear to be above 1 in case of gold and below 1 for silver while the order of integration associated with the cyclical frequency is slightly above 0 in the majority of the cases in the two series further higher orders of integration are associated to the long run component compared with the cyclical one the implications of these findings are highlighted

credit constraints equity market liberalizations and international trade abstract this paper provides evidence that credit constraints are an important determinant of international trade flows i exploit shocks to the availability of external finance and examine the impact of equity market liberalizations on the export behavior of 91 countries in the 1980 1997 period i show that liberalizations increase exports disproportionately more in financially vulnerable sectors that require more outside finance or employ fewer collateralizable assets this result is not driven by cross country differences in factor endowments and is independent of simultaneous trade policy reforms moreover it obtains with equal strength in the full panel of countries as well as in both panel and event study analyses of countries which removed capital controls during the sample period finally the effects of liberalizations are more pronounced in economies with initially less active stock markets indicating that foreign equity flows may substitute for an underdeveloped domestic financial system similarly opening equity markets has a greater impact in the presence of higher trade costs caused by restrictive trade policies

off the cliff and back credit conditions and international trade during the global financial crisis abstract we study the collapse of international trade flows during the global financial crisis using detailed data on monthly us imports we show that credit conditions were an important channel through which the crisis affected trade volumes by exploiting the variation in the cost of capital across countries and over time as well as the variation in financial vulnerability across sectors countries with higher interbank rates and thus tighter credit markets exported less to the us during the peak of the crisis this effect was especially pronounced in sectors that require extensive external financing have limited access to trade credit or have few collateralizable assets exports of financially vulnerable industries were thus more sensitive to the cost of external capital than exports of less vulnerable industries and this sensitivity rose during the financial crisis the quantitative implications of our estimates for trade volumes highlight the large real effects of financial crises and the potential gains from policy intervention

credit market imperfections and patterns of international trade and capital flows this paper offers two simple models to illustrate how corporate governance contractual enforcement and the balance sheet condition of the business sector etc can affect the patterns of international trade and capital flows in the presence of credit market imperfections jel d52 f15 f21 f40

competitive procurement of ancillary services by an independent system operator this paper discusses the competitive procurement of ancillary services by an independent system operator iso the paper assumes the existence of an underlying market for energy and explains why this energy market must be accompanied by a market for ancillary services these services include operating reserves and automatic generation control agc both of which may require generators that are infra marginal in the energy market to choose between supplying energy or ancillary services the paper discusses the design of an auction for these services that has formed the basis for the california iso s ancillary services market the paper also discusses the real time dispatch of ancillary services

coordinated fuzzy constrained optimal power dispatch for bilateral contract balancing electricity and ancillary services markets this paper proposes a coordinated fuzzy constrained optimal power dispatch cfcopd algorithm for bilateral contract balancing electricity and ancillary services markets the cfcopd problem is decomposed into social welfare fuzzy maximization subproblem which is solved by mixed integer fuzzy linear programming miflp and combined reactive power cost and cost of real power loss fuzzy minimization subproblem which is solved by fuzzy linear programming flp the proposed cfcopd algorithm is tested on the modified ieee 30 bus system and the thai power 424 bus system the dispatch results show that the social welfare of the fuzzy constrained competitive electricity and ancillary services price ceasp scheme with bilateral contract curtailment bids is higher than those of competitive electricity price cep scheme and ceasp scheme with and without bilateral contract curtailment bids leading to a lower average electricity price

credit market constraints consumption smoothing and the accumulation of durable production assets in low income countries investments in bullocks in india in this paper we formulate and estimate a finite horizon structural dynamic model of agricultural investment behavior that incorporates the major features of low income agricultural environments income uncertainty constraints on borrowing and rental markets and the use of investment assets to generate income and smooth consumption the model is fit to longitudinal indian household data on farm profits bullock stocks and pump sets the estimated structural parameters are used to assess the effects on the life cycle accumulation of bullocks agricultural profits and welfare associated with complete markets and bullock liquidity and with second best policies that provide assured sources of income to farmers and weather insurance

international trade and labor market discrimination textabstractwe embed a competitive search model with labor market discrimination or nepotism into a two sector two country framework in order to analyze how labor market discrimination impacts the pattern of international trade and also how trade trade affects discrimination discrimination or nepotism reduces the matching probability and output in the skilled labor intensive differentiated product sector so that the country with more discriminatory firms has a comparative advantage in the simple sector as countries alter their production mix in accordance with their comparative advantage trade liberalization can then reinforce the negative effect of discrimination on development in the more discriminatory country and reduce its effect in the country with fewer discriminatory firms similarly the profit difference between non discriminatory and discriminatory firms increases in the less discriminatory country and shrinks in the more discriminatory one in this way trade can further reduce discrimination in a country where it is less prevalent and increase it where it is more firmly entrenched

commodity price volatility and world market integration since 1700 abstract poor countries are more volatile than rich countries and this volatility impedes their growth furthermore commodity prices are a key source of that volatility this paper explores price volatility since 1700 to offer three stylized facts commodity price volatility has not increased over time commodities have always shown greater price volatility than manufactures and world market integration breeds less commodity price volatility thus economic isolation is associated with much greater commodity price volatility while world market integration is associated with less

testing genuine savings as a forward looking indicator of future well being over the very long run genuine savings gs have been much used in recent years as an indicator of a country s sustainability according to some theorists e g arrow et al 2012 under certain conditions a country with a positive level of gs should experience non declining future utility given the assumption of unlimited substitutability among all forms of capital sometimes called weak sustainability this paper reports the first very long run tests of gs also called comprehensive investment or adjusted net savings as a forward looking indicator of future well being we assemble data for british capital back to 1765 and construct several net investment measures which are used as indicators of two alternative measures of future well being consumption per capita and real wages an allowance for a value of time due to exogenous technological progress is included in some gs measures and we demonstrate the importance of this measure and the choice of discount rate over the very long run on the whole our results do not reject the postulated relationship between gs and future well being and show gs can be a forward looking indicator of future well being for periods of up to 100 years

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

institution induced productivity differences and patterns of international capital flows abstract this paper studies theoretically how the cross country differences in the institutional quality iq of the domestic credit markets shape the patterns of international capital flows when such iq differences cause productivity differences across countries iq affects productivity by changing productivity agency cost trade offs across heterogeneous investment projects which have opposite effects on the investment and capital flows from exogenous productivity differences the overall effect of iq could generate u shaped responses of the investment and capital flows this means that capital could flow from middle income to low income and high income countries and starting from a low iq a country could experience both growth and a current account surplus after an institutional reform more generally the results here offer some cautions when interpreting the evidence on the role of productivity and institutional differences on capital flows and question the validity of using financial frictions as a proxy for the quality of financial institutions

the heterogeneous effect of finance on international trade is the impact of financial development on international trade heterogeneous being positive negative or null across manufacturing sectors and is it dependent on the level of sectoral requirement on external finance for capital need to examine these questions this article uses a panel trade database on 21 manufacturing sectors in 80 countries between 2000 and 2009 the analysis demonstrates that the effect of financial development on trade is indeed heterogeneous by estimating a coefficient for each sector and showing that the signs and significance levels vary across them the article also demonstrates that sectors with strong reliance on external finance export higher volume from countries with developed financial system and that financial development reduces trade in industries with low financial dependence level

a simple model of sectoral adjustment despite the significance of limited labour mobility across sectors few attempts have been made to produce dynamic models of sectoral adjustment which are consistent with perfect foresight and yet flexible enough to allow for a variety of dynamic experiments this paper proposes a simple perfect foresight model of two sector economies in which aggregate sectoral movement of labour takes place through the process of demographic change the model is tractable enough that one can easily examine the effects of intertemporally complicated relative price shocks both exogenous and endogenous under a variety of assumptions on technology

export diversification through resource based industrialization the case of natural gas for small resource rich developing economies specialization in raw exports is usually considered to be detrimental to growth and resource based industrialization rbi is often advocated to promote export diversification this paper develops a new methodology to assess the performance of these rbi policies we first formulate an adapted mean variance portfolio model that explicitly takes into consideration i a technology based representation of the set of feasible export combinations and ii the cost structure of the resource processing industries second we provide a computationally tractable reformulation of the resulting mixed integer nonlinear optimization problem finally we present an application to the case of natural gas comparing current and efficient export oriented industrialization strategies of nine gas rich developing countries

common factors in latin america s business cycles this paper constructs new business cycle indices for argentina brazil chile and mexico based on common dynamic factors extracted from a comprehensive set of sectoral output external trade fiscal and financial variables the analysis spans the 135 years since the insertion of these economies into the global economy in the 1870s the constructed indices are used to derive a business cycle chronology for these countries and characterize a set of new stylized facts in particular we show that all four countries have historically displayed a striking combination of high business cycle volatility and persistence relative to benchmark countries and that such volatility has been time varying with important differences across policy regimes we also uncover a sizeable common factor across the four economies which has greatly limited scope for regional risk sharing

optimal dispatch under transmission contracts open transmission access is now the most topical issue in power system deregulation power system operation poses the greatest challenge to a competitive environment incorporating open transmission access and there are some fundamental operational problems that are still unresolved this paper seeks to provide an approach to the power dispatch problem in a structure dominated by bilateral and multilateral transmission contracts a framework for price based operation under these conditions is developed and a methodology for optimal transmission dispatch is proposed the case study results illustrate that the proposed market arrangement and operating mechanisms are compatible with this new business environment

the distribution of talent and the pattern and consequences of international trade i study the interaction between imperfect labor contracts and international trade in a setting in which workers have private information about their own abilities when an individual s contribution to firm output can be measured accurately in some activities but not in others the most able workers select occupations in which their pay most closely reflects their own performance in a world economy with two otherwise similar countries that have different distributions of talent the country with the more heterogeneous labor force exports the good that is produced by the most talented individuals in this country trade exacerbates the polarization of the labor force and often worsens the distribution of income

the impact of terms of trade and real exchange rate volatility on investment and growth in sub saharan africa abstract specialization in primary product exports reduces growth but why adverse trends in and the high variance of primary product prices are possible explanations the impact on investment and growth of the level and volatility of the terms of trade and the real effective exchange rate is estimated for a panel of 14 sub saharan african countries over 1980 1995 growth is negatively affected by terms of trade instability and investment by real exchange rate instability both growth and investment increase when the terms of trade improve and real exchange rate overvaluation is eliminated

north south lending and endogenous domestic capital market inefficiencies abstract we develop an open economy model of intertemporal trade under asymmetric information capital market imperfections are endogenous and depend on a country s stage of economic development relative to the perfect information benchmark north south capital flows are dampened and possibly reversed and world interest rates are lower whereas riskless rates are equalized across borders the domestic loan rate is higher in poorer countries the model can be applied to a number of policy issues including the debt overhang problem the indexation of foreign public debts and the effect of income distribution on growth

natural resources decentralization and risk sharing can resource booms unify nations previous studies imply that a positive regional fiscal shock such as a resource boom strengthens the desire for separation in this paper we present a new and opposite perspective we construct a model of endogenous fiscal decentralization that builds on two key notions a trade off between risk sharing and heterogeneity and a positive association between resource booms and risk the model shows that a resource windfall causes the nation to centralize as a mechanism to either share risk and or prevent local capture depending on the relative bargaining power of the central and regional governments we provide cross country empirical evidence for the main hypotheses finding that resource booms i decrease the level of fiscal decentralization with no u shaped patterns ii cause the former due to risk sharing incentives primarily when regional governments are relatively strong and iii have no effect on political decentralization

existence and determination of competitive equilibrium in unit commitment power pool auctions price setting and scheduling alternatives the existence determination and effects of competitive market equilibrium for unit commitment power pool auctions are investigated in this paper when an equilibrium does not exist under specific situations conflictive multiple optimal primal solutions may exist when an equilibrium exists multiple primal solutions do not represent conflicts of interest the existence or nonexistence of competitive equilibrium can be determined if the dual problem is solved to optimality if equilibrium does not exist there is excess supply at the optimal dual solution which can be used to define priority orders and price setting alternatives to determine a final schedule and avoid the conflicts of interest and revenue deficiency under disequilibrium the optimal dual variables are not market clearing prices a nonuniform pricing rule that avoids the flaws and complications of other pricing rules such as maximum average cost and price minimization auctions is proposed in the paper the proposed scheduling and price setting alternatives show that unit commitment models can be used in a market environment

financial constraints the distribution of wealth and international trade we develop a simple theoretical model to examine the impact of the distribution of wealth on the patterns of trade when capital markets are imperfect our model predicts that the dispersion of wealth can be a determinant of comparative advantage for low income countries with poor financial institutions we find support for these prediction using export and financial panel data from a large sample of countries

terms of trade uncertainty and economic growth abstract this paper examines a stochastic endogenous growth model in which terms of trade uncertainty affects savings and growth the model explains the well known positive link between growth and the mean rate of change of terms of trade and predicts also that terms of trade variability affects growth increased terms of trade variability results in faster or slower growth depending on the degree of risk aversion but in either case it reduces social welfare these growth effects imply that welfare costs of macroeconomic uncertainty are much larger than first thought cross country panel regressions provide strong support for the model s key predictions

trade shocks and macroeconomic fluctuations in africa this paper examines the role of external shocks in explaining macroeconomic fluctuations in african countries we construct a quantitative stochastic dynamic multi sector equilibrium model of a small open economy calibrated to represent a typical african economy in our framework external shocks consist of trade shocks modeled as fluctuations in the prices of exported primary commodities imported capital goods and intermediate inputs and a financial shock modeled as fluctuations in the world real interest rate our results indicate that while trade shocks account for roughly 45 percent of economic fluctuations in aggregate output financial shocks play only a minor role we also find that adverse trade shocks induce prolonged recessions

unprecedented changes in the terms of trade abstract the development of asia exposed commodity exporting economies to unprecedented changes in their terms of trade using a small open economy model we estimate changes in the long run level and variance of australia s terms of trade and study the quantitative implications of these changes an innovation of our analysis is to account in estimation for structural changes in the terms of trade we find that long run commodity prices increased by 35 in mid 2003 and that the volatility of shocks to commodity prices doubled soon after the increase in the level of commodity prices is much smaller than single equation estimates suggest this is because our inferences rely on many observables that in general equilibrium also respond to shifts in the long run level of the terms of trade

the 2005 lawrence r klein lecture emergent class structure this article presents a model of the emergent class structure in which a society inhabited by inherently identical households may be endogenously split into the rich bourgeoisie and the poor proletariat for some parameter values the model has no steady state where all households remain equally wealthy in this case the model predicts emergent class structure or the rise of class societies even if every household starts with the same amount of wealth the society will experience symmetry breaking and will be polarized into two classes in steady state where the rich maintain a high level of wealth partly due to the presence of the poor who have no choice but to work for the rich at a wage rate strictly lower than the fair value of labor the nonexistence of the equal steady state means that a one shot redistribution of wealth would not be effective as wealth inequality and the class structure would always reemerge thus the class structure is an inevitable feature of capitalism for other parameter values on the other hand the model has the unique steady state which is characterized by perfect equality in this case the model predicts dissipating class structure or the fall of class societies even if the society starts with significant wealth inequality labor demand by the rich employers pushes up the wage rate so much that workers will escape from the poverty and eventually catch up with the rich eliminating wealth inequality and the class structure in the long run in an extension we introduce self employment which not only provides the poor with an alternative to working for the rich but also provides the rich with an alternative to investment that creates jobs due to this dual nature of self employment the effects of self employment turn out to be quite subtle yet within the present framework it is possible to offer a complete characterization of the steady states even in the presence of self employment

the competitive effects of credit constraints in the global economy as credit constraints exclude some firms from external finance and thus from market entry they affect prices and markups by altering the degree of competition lower credit constraints allow less productive firms to enter with the following consequences on the one hand more competition tends to reduce average prices but on the other hand less productive firms charge above average prices the overall effect is thus ambiguous we therefore formulate and structurally estimate a quantitative multi country version of the model to gauge the direction and magnitude of the effects of credit constraints in a model with variable firm specific markups over marginal costs in a sample of 11 european countries manufacturing sectors between 2000 and 2005 we find that an abolishment of credit constraints reduces markups by about 6 1 on average while average prices are predicted to increase by 1 6 the latter indicates that the effect of credit constraints on productivity dominates the one on competition

the prebisch singer hypothesis four centuries of evidence we employ a unique data set and new time series techniques to reexamine the existence of trends in relative primary commodity prices the data set comprises 25 commodities and provides a new historical perspective spanning the seventeenth to the twenty first centuries new tests for the trend function robust to the order of integration of the series are applied to the data results show that eleven price series present a significant and downward trend over all or some fraction of the sample period in the very long run a secular deteriorating trend is a relevant phenomenon for a significant proportion of primary commodities 2010 the president and fellows of harvard college and the massachusetts institute of technology

institutions and moral hazard in open economies i investigate the interaction between international trade and national institutional development in an environment characterized by heterogeneous individuals choosing their education levels to maximize their utilities and institutions alleviating moral hazard by allowing managers to better observe and verify the productive efforts of workers liberalized trade allows institutions to serve as independent sources of comparative advantage in this setting i examine the effect of trade liberalization on the distribution of income in institutionally developed and underdeveloped nations trade affects income via a direct effect on prices and an indirect effect on the incentives to invest in education

capital market imperfections international credit markets and nonconvergence abstract we consider a two country growth model with international capital markets these markets fund capital investment in both countries and operate subject to a costly state verification csv problem investors in each country require some external finance but also provide internal finance which mitigates the csv problem when two identical except for their initial capital stocks economies are closed they necessarily convergemonotonicallyto the same steady state output level unrestricted international financial tradeprecludesotherwise identical economies from converging and poor countries are necessarily net lenders to rich countries oscillation in real activity and international capital flows can occur journal of economic literatureclassification numbers e00 f00 f34 g14

persistent gaps and default traps we show how vicious circles in countries credit histories arise in a model where output persistence is coupled with asymmetric information about output shocks in such an environment default signals the borrower s vulnerability to adverse shocks and creates a pessimistic growth outlook this translates into higher interest spreads and debt servicing costs relative to income raising the cost of future repayments thereby creating default traps we build a long and broad cross country dataset to show the existence of a history dependent default premium and of significant effects of output persistence on sovereign creditworthiness consistent with the model s predictions

combined pool bilateral dispatch i performance of trading strategies this three paper series deals with the dispatch of power networks under mixed pool bilateral trading the major questions examined are i to what degree does the relative level of pool versus bilateral trading influence performance in terms of individual power levels costs prices revenues and expenditures ii what is the comparative performance of mixed trading with firm and nonfirm bilateral contracts under various curtailment strategies and iii is the revenue derived from the pool and bilateral trading consistent with the corresponding unbundled costs the above issues are sequentially addressed in each of the three parts the eventual goal of these results is to help generator and load serving entities choose appropriate relative levels of pool versus bilateral trades while considering risk economic performance as well as physical constraints this paper proposes a one step optimal power flow model that dispatches the pool in combination with the privately negotiated bilateral contracts while minimizing cost and accounting for both losses and congestion in part i notions of pool bilateral demand and generation as well as a number of technical and economic performance measures for each competing entity are defined this dissection of total and individual financial measures according to pool or bilateral trading allows the market participant to evaluate the profitability of each component of its chosen pool bilateral mix a number of simulation results illustrate the effect of varying the relative levels of pool bilateral trading on the values of individual performance measures

adverse selection in labor markets and international trade this analysis considers trade between countries with labor market distortions due to adverse selection comparative advantage is caused either by a better mix of high and low productivity workers or by the absence of adverse selection in one country in either case free trade may lead to a loss for the inferior country a trading equilibrium is pareto better than an equilibrium in a fully integrated economy with perfect factor mobility if both countries face adverse selection otherwise the trading equilibrium is pareto inferior subsidies for production of the imported good may improve the social utility of the inferior country copyright 1995 by the editors of the scandinavian journal of economics

the missing link the ricardian approach to the factor endowments theory of trade this paper views all interpersonal trade as ricardian while all international trade reflects each country s factor endowment the model provides the logical link betwe en heckscher ohlin and ricardo the strength of the model is that it allows simpler and more robust theorems about trade welfare and fac tor payments factor price equalization holds universally and stolper samuelson is not tied to the number of goods or factors a key resul t is that the old mill theorem that the small country gains all from trade is incorrect trade patterns with three factors and two goods a re completely characterized copyright 1988 by american economic association

optimal dispatch of a system based on offers and bids a mixed integer lp formulation the federal energy regulatory commission s ferc orders 888 and 889 will have far reaching consequences on the operation and dispatch of electric power systems a common element of the change is that of dispatching the system based on offers and bids to sell and buy unbundled commodities this paper formulates and solves the optimal dispatch problem as a mixed integer linear program such a formulation allows the acceptance of offers with minimum takes arising from generator characteristics

long run commodity prices economic growth and interest rates 17th century to the present day a significant proportion of the trade basket of many developing countries is comprised of primary commodities this implies relative price movements in commodities may have important consequences for economic growth and poverty reduction taking a long run perspective we examine the historical relation between a new aggregate index of commodity prices economic activity and interest rates initial empirical tests show that commodity prices present a downward trend with breaks over the entire industrial age providing clear support for the prebisch singer hypothesis it would also appear that this trend has declined at a faster rate since the 1870s conversely several gdp series such as world chile china uk and us trend upwards with breaks such trending behaviour in both commodity prices and economic activity suggests a latent common factor like technological innovation to assess the relationships between economic series we apply a stationary var vector autoregression to model movements around trends strikingly there is evidence that commodity prices granger cause income and interest rates whilst interest rates granger cause commodity prices from these results and the related impulse response function analysis the historical perspective provides some useful information for contemporary policy makers for example loose monetary policy has tended to support higher commodity prices more over commodity price movements have an asymmetric country effect on economic activity periods of falling commodity prices will support gdp growth for com modity importers like the us but depress growth for commodity exporters such as chile

unemployment and the efficiency wage hypothesis there has been much recent discussion of the reasons why prices in certain markets and in particular in labour markets may not adjust to eliminate excess supply the absence of speedy adjustment of prices is an essential feature of the recent models of disequilibrium macroeconomics but for the most part no explanation for this absence is provided from within those models one explanation that has been around in the literature for some time and has been receiving increasing attention recently is the efficiency wage hypothesis initially applied to developing economies see leibenstein i957 it has more recently been adapted to developed economies by weiss i 980 and used in the context of a keynesian macroeconomic model by hart i 980 similar concepts have been applied to the credit market by stiglitz and weiss i98i the purpose of the present paper is to explore further the conditions under which the notion of an efficiency wage is applicable and can provide an explanation of involuntary unemployment the essential feature of the efficiency wage hypothesis is that the productivity of a firm s employees increases as their wage is increased at least over an economically relevant part of its range if the wage paid by the firm is denoted by w the number of employees by l and the productivity of each employee by p w where p w o then the effective labour force of the firm e can be represented by

institutional quality and international trade institutions quality of contract enforcement property rights shareholder protection and the like have received a great deal of attention in recent years yet trade theory has not considered the implications of institutional differences beyond treating them simply as different technologies or taxes the purpose of this paper is twofold first we propose a simple model of international trade in which institutional differences are modeled within the framework of incomplete contracts we show that doing so reverses many of the conclusions obtained by equating institutions with productivity institutional differences as a source of comparative advantage imply among other things that the less developed country may not gain from trade and factor prices may actually diverge as a result of trade second we test empirically whether institutions act as a source of trade using data on us imports disaggregated by country and industry the empirical results provide evidence of institutional content of trade institutional differences are an important determinant of trade flows

irving fisher and price level targeting in austria was silver the answer the question of price level versus inflation targeting remains controversial disagreement concerns not so much the desirability of price stability but rather the means of achieving it irving fisher argued for a commodity dollar standard where the purchasing power of money was fixed by indexing it to a basket of commodities we show that movements in the price of silver closely track the movements in overall prices during the classical gold standard era the one to one relationship between paper and silver bonds suggests that a simple silver rule could have sufficed to fix the purchasing power of money

utilization of real time balancing market for transmission system control under uncertainty an algorithm facilitating automated purchase of energy on real time balancing market is proposed in this paper the main inputs of the algorithm are a prediction of the area control error its uncertainty in the form of a standard deviation and a set of previously procured ancillary services contracted power reserves available for power balance control the algorithm evaluates all possible power balance scenarios for the closest hour in a probabilistic manner and gives a cost optimal recommendation for the real time balancing market demand a case study on realistic data for the czech republic control area was performed by simulation of the power balance control with a monte carlo simulator of the czech transmission system the results showed potential for savings on the regulation energy costs

reactive power as an ancillary service this paper addresses the problem of reactive power procurement by an independent system operator iso in deregulated electricity markets a reactive bid structure is proposed in the context of a reactive power market based on the reactive power price offers and technical constraints involved in reactive power planning a two tier approach is developed to determine the most beneficial reactive power contracts for the iso the reactive capability of a generator and therefore the opportunity costs in providing reactive power is also included in the model uncertainty in reactive demand and in reactive bids of participating parties is incorporated through monte carlo simulations and the expected reactive power procurement plan for the iso is hence determined the cigre 32 bus network approximately representing the swedish system is used for the studies

decomposition model and interior point methods for optimal spot pricing of electricity in deregulation environments in this paper an integrated optimal spot pricing model is presented first the proposed model includes the detailed derivation of optimal nodal specific real time prices for active and reactive powers and the method to decompose them into different components corresponding to generation loss and many selected ancillary services such as spinning reserve voltage control and security control the features of the proposed model are discussed in relationship to existing pricing models and classical economic dispatch the model is then implemented by modifying existing newton opf methods through interior point algorithms which can effectively avoid go no go gauge i e highly volatile in the calculation of spot prices case studies on 5 bus and ieee 30 bus systems are reported to illustrate the proposed method

foreign banks and the dual effect of financial liberalization in emerging countries credit market liberalization is often motivated with the financial deepening generated by the entry of foreign financial institutions however there is a risk that liberalization may benefit internationally active export oriented businesses at the expense of domestically oriented ones this paper models a two sector economy in which foreign lenders are more efficient than local lenders at extracting value from internationally tradable collateral assets under some conditions the entry of foreign lenders eases entrepreneurs access to the credit market and raises asset prices and output but in other circumstances it reduces the depth of the credit market and depresses the price of nontradables and output liberalization can have a contractionary impact by inducing a reallocation of credit from the nontradables to the tradables sector

trade and capital flows a financial frictions perspective the classical heckscher ohlin mundell paradigm states that trade and capital mobility are substitutes in the sense that trade integration reduces the incentives for capital to ow to capital scarce countries in this paper we show that in a world with heterogeneous nancial development the classic conclusion does not hold in particular in less nancially developed economies south trade and capital mobility are complements within a dynamic framework the complementarity carries over to nancial capital ows this interaction implies that deepening trade integration in south raises net capital in ows or reduces net capital out ows it also implies that at the global level protectionism may back re if the goal is to rebalance capital ows when these are already heading from south to north our perspective also has

credit traps and credit cycles we develop a simple macroeconomic model of credit market imperfections with heterogeneous investment projects the projects differ in productivity the investment requirement and the severity of agency problems behind the borrowing constraints a movement in borrower net worth shifts the composition of the credit between projects with different productivity levels thereby causing endogenous investment specific technological change furthermore such endogenous technological change in turn affects borrower net worth these composition effects could give rise to credit traps credit collapse leapfrogging credit cycles and growth miracles in the dynamics of the aggregate investment and borrower net worth jel e22 e44 o33

gains from trade and the sovereign bond market abstract increasing international flows of goods services and financial assets have been shown to increase a country s welfare through various channels this paper studies how a country s access to a bond market affects its welfare gains from international trade we do so by incorporating a sovereign bond market into a simple armington 1969 s trade model while standard trade models suggest surprisingly small gains from trade our model implies that introducing channels through a sovereign bond market greatly magnifies the gains from trade key mechanisms in the model are confirmed by data and the results are found to be robust to a variety of considerations

on the origins of comparative advantage this paper proposes a simple theory of international trade with en dogenous technological dierences across countries the core of our analysis lies in the determinants of the division of labor we consider a world economy comprising two large countries with a continuum of goods and one factor of production labor each good is characterized by its complexity de ned as the number of tasks that must be per formed to produce one unit there are increasing returns to scale in the performance of each task which creates gains from specialization and uncertainty in the enforcement of each contract which create transac tion costs the trade obetween these two forces pins down the size of productive teams across sectors in each country under free trade the country where teams are larger specializes in the more complex goods in our model it is the country where the product of institutional qual ity and human per worker capital is larger hence better institutions and more educated workers are complementary sources of comparative advantage in the more complex industries

primary commodity prices manufactured goods prices and the terms of trade of developing countries what the long run shows the authors revisit in this article the empirical foundation of the alleged secular decline in the prices of primary commodities relative to those of manufactures they use a newly constructed index of commodity prices and two modified indexes of manufactured good prices and find that from 1900 to 1986 the relative prices of all primary commodities fell on trend by 0 5 percent a year and those of nonfuel primary commodities by 0 6 percent a year they thus confirm the sign but not the magnitude of the trend implicit in the work of prebisch but even the more limited secular decline shown by their relative price indexes may be magnified by an incomplete account of quality improvements in manufactures they then show that the evolution of terms of trade of nonfuel primary commodities is not the same as that of the net barter terms of trade of non oil exporting developing countries finally they find that despite the decline that has probably occurred during the current century in the terms of trade of nonfuel primary commodities the purchasing power of total exports of these products has increased considerably similarly the fall that may have occurred after world war ii in the net barter terms of trade of developing countries seems to have been more than compensated for by the steady improvement in their income terms of trade

do multinationals deteriorate developing countries export prices the impact of fdi on net barter terms of trade this paper explores the economic relationship between foreign direct investment fdi to developing countries and the export prices of the latter measured by terms of trade it is rst shown that economic theory suggests such a relationship for various reasons but is inconclusive about the direction of the eect to address this open issue empirically i analyze data on more than 50 developing countries throughout the period 1980 2008 using robust dynamic panel data methods the results show that fdi had an economically relevant and statistically signicant positive impact on developing countries net barter terms of trade a higher level of education in the developing country fosters this eect

combined pool bilateral dispatch part ii curtailment of firm and nonfirm contracts this paper deals with the dispatch of power networks under mixed pool bilateral trading the major questions that are examined are the following 1 to what degree does the relative level of pool versus bilateral trading influence performance in terms of individual power levels costs prices and revenues 2 what is the comparative performance of mixed trading with firm and nonfirm bilateral contracts under various curtailment strategies 3 is the revenue derived from the pool and bilateral trading consistent with the corresponding unbundled costs the above questions are sequentially addressed in separate parts of this three part paper the eventual goal of these results is to help generator and load serving entities choose appropriate relative levels of pool versus bilateral trades while considering risk economic performance and physical constraints in part ii two types of bilateral contracts firm and nonfirm are introduced together with their respective curtailment and noncurtailment bids the optimal power flow problem from part i is now modified to accommodate this new type of operation technical and economical performance measures defined in part i namely generation revenues from bilateral and pool sales pool demand payments plus generation and load expenditures to cover transmission loss and congestion management attributed to bilateral exchanges are also used here together with revenues from contract curtailment and expenditures due to noncurtailment bidding simulation results illustrate the effects of firm and nonfirm contracts and their bidding strategies on the relative levels of pool bilateral trading as well as on economic performance of market participants

was this time different fiscal policy in commodity republics abstract we revisit the issue of fiscal procyclicality in commodity rich nations commodity republics in the nomenclature of this paper since commodity prices are plausibly a main driver of fiscal policy outcomes in these countries we focus on the behavior of fiscal variables across the commodity cycle in contrast to behavior across the output cycle which has been the main focus of earlier research on fiscal procyclicality we present evidence of reduced fiscal policy procyclicality in a number of countries our empirical results suggest that improvements in institutional quality have led to a more countercyclical fiscal policy stance in a number of countries the presence of fiscal rules also seems to have made a difference countries that use them displayed a larger shift toward fiscal counter cyclicality between the two episodes

when is quality of financial system a source of comparative advantage abstract dominant theories of trade tend to ignore the role of finance as a source of comparative advantage on the other hand the finance literature places financial institutions as a driver of economic growth this paper unites these two competing schools of thought in a general equilibrium framework for economies with high quality institutions defined by the competitiveness of the financial sector the quality of corporate governance and the level of property rights protection finance is passive on the other hand for economies with low quality institutions the quality of the financial system is an independent source of comparative advantage interestingly the conventional measure of financial development the size of the financial market relative to gdp does not adequately capture the underlying quality of financial institutions in addition free trade may reduce the aggregate income in south financial capital tends to flow from south to north

financial market globalization symmetry breaking and endogenous inequality of nations this paper investigates the effects of financial market globalization on the inequality of nations the world economy consists of inherently identical countries which differ only in their levels of capital stock each country is represented by the standard overlapping generations model modified only to incorporate credit market imperfection an integration of financial markets affects the set of stable steady states as it changes the balance between the equalizing force of the diminishing returns technology and the unequalizing force of the wealth dependent borrowing constraint the model is tractable enough to allow for a complete characterization of the stable steady states in the absence of the international financial market the world economy has a unique steady state which is symmetric and stable in the presence of the international financial market symmetry breaking occurs under some conditions that is the symmetric steady state loses its stability and stable asymmetric steady states come to exist in the stable asymmetric steady states the world economy is endogenously divided into the rich and poor countries the borrowing constraints are binding in the poor but not in the rich the world output is smaller the rich are richer and the poor are poorer in any of the stable asymmetric steady states than in the unstable symmetric steady state

commodity prices and growth in africa a frican economies export primary commodities and most export little else policymakers as well as economists and historians of african economic development have seen these exports as both a hope and a curse the following parable tells the story once upon a time a servant of the ruler discovered a miraculous plant which grew readily in that country and whose seeds could be woven into fine cloth so desirable was this fabric that it became prized all over the world and fetched a high price after two score years the plant accounted for most of the country s trade with the world the ruler ordered the peasants to grow the plant paid them only a fraction of its price and he and his nobles became fabulously wealthy because the ruler wished to be remembered as a great ruler and as the father of his country he used his wealth to build a great army and brought machines from foreign countries to make the fine goods that previously could only be obtained from foreign merchants but the machines often broke down and the goods that they made were of poor quality and after the ruler died they were left to rust under the ruler s successor there was a war in a foreign land where the plant also grew so that there was a great shortage and its price increased threefold in only three seasons the new ruler spent his newfound riches on fantastic extravagance while immense sums were expended on public works after the manner of the east and on productive works carried out in the wrong way or too soon not even the threefold increase in prices could support these expenditures and the country soon found itself deeply in debt when the war ended and the price fell the country could no longer pay the interest on its debt or borrow more money even after it had sold its only useful public work to a foreign power so that power sent a mission to the country the publication of whose report from which the above

terms of trade fluctuations and economic growth in developing economies abstract the effect of terms of trade fluctuations on capital accumulation is investigated in a simple open economy stochastic growth model imported inputs make domestic capital more productive but export prices are uncertain the model s output process has a random walk component so even transient price shocks have permanent effects on output levels the size of the random walk component depends on the country s trade share the supply response of exports and other structural parameters also more variable export prices generally reduce expected domestic investment these results are consistent with the estimated variance ratios and impulse response functions for a number of ldcs

easy come easy go moral hazard in the context of return to education this empirical study advances the understanding of the theory of investment in human capital by outlining limitations to its applicability in the context of return to education the study uses the concept of moral hazard to examine circumstances when financial support for education purpose generates less desirable post graduation incomes this study explores the relationship between financial support and post graduation incomes using data from the survey of income and program participation that is designed to measure the economic situation of individuals results suggest that students are less likely to engage in moral hazardous behavior to the degree to which they are older and to the degree to which they receive costlier financial assistance

cross country evidence on the link between volatility and growth this paper presents empirical evidence against the standard dichotomy in macroeconomics that separates growth from the volatility of economic fluctuations in a sample of ninety two countries as well as a sample of oecd countries the authors find that countries with higher volatility have lower growth the addition of standard control variables strengthens the negative relationship the authors also find that government spending induced volatility is negatively associated with growth even after controlling for both time and country fixed effects copyright 1995 by american economic association

terms of trade shocks and economic performance 1870 1940 prebisch and singer revisited debate over trends in the terms of trade between primary commodities and manufactures their causes and their impact has dominated the literature for more than a century classical economists claimed that the terms of trade of primary commodities should improve since land and natural resources are always in inelastic supply following the great depression a new view emerged what came to be known as the prebisch singer thesis was instead that the terms of trade for primary products had deteriorated up to the 1950s the subsequent literature has almost exclusively and obsessively asked whether a deterioration has actually taken place over the 130 years following 1870 nowhere in this literature has the impact of these terms of trade shocks on long run growth been assessed although it is certainly full of lively speculation and debate this paper fills part of this empirical gap by constructing a country specific panel data base 1870 1940 by documenting terms of trade trends by country and region and finally by estimating the impact of the price shocks on long run economic performance we find the impact to have been asymmetric between center and periphery this abstract was borrowed from another version of this item

winners and losers in the commodity lottery the impact of terms of trade growth and volatility in the periphery 1870 1939 abstract most countries in the periphery specialized in the export of just a handful of primary products for most of their history some of these commodities have been more price volatile than others and those with more volatility have grown much more slowly relative to the industrial leaders and to other primary product exporters this fact helps explain the growth puzzle noted by easterly kremer pritchett and summers more than a decade ago that the contending fundamental determinants of growth institutions geography and culture exhibit far more persistence than do the growth rates they are supposed to explain using a new panel database for 35 countries this paper estimates the impact of terms of trade volatility and secular change on country performance between 1870 and 1939 volatility was much more important for growth than was secular change and accounts for a substantial degree of the divergence in incomes within the sample of small commodity dependent periphery nations as well as under performance of the periphery as a whole relative to such nations as the us and western europe or core one channel of impact seems to be the adverse effect of volatility on foreign investment it appears that the terms of trade effects were asymmetric between core and periphery