relative trading volume risk measures and other firm characteristics during the market crash abstract the crash of 1987 led to significant increases in the trading volume in the n y s e the paper uses individual data of 473 s p 500 firms to analyze the relation between said increases in trading volume and firm and security characteristics

after hours stock prices and post crash hangovers after hours pricing in foreign equity markets of multiple listed u s securities appeared to be efficient in predicting new york prices in the weeks immediately following the october 1987 crash but relatively uninformative in succeeding months by contrast daily changes in new york prices appear to be efficiently incorporated in after hours trading on both the tokyo and london exchanges throughout the sample period this paper suggests that the asymmetry and temporal variations in cross market correlations are consistent with rational investor behavior in equity markets with nonzero transaction costs and time varying share price volatility in the wake of the october 1987 crash a number of studies have provided evidence of significant international linkages among national equity markets where high frequency movements in the share price indices of national exchanges appear to induce sympathetic price movements in subsequent trading on other national exchanges however the cross market correlations are generally much larger in periods of extreme volatility and appear to subside to modest or even negligible associations during periods of more normal trading activity since the constituent stocks of national exchange indices are not identical it may be that the episodic increases in correlated movements of the indices are due to changes in the actual or perceived relative importance of common factors in periods of unusual volatility the thrust of this paper is to remove the issue of the disparate composition of the price indices of national exchanges by examining the prices of a set of

forward exchange bias hedging and the gains from international diversification of investment portfolios abstract the gains to the us investor from international diversification of investment portfolios are examined for portfolio strategies that hedge and strategies that do not hedge exchange rate risk via the interbank forward market using the sharpe performance index and stochastic dominance as performance measures almost all the unhedged strategies outperformed the hedged strategies for 1985 1988 the opposite held for 1981 1984 the results are explained by the biasedness of forward rates in predicting future spot rates jel f30

comovements in national stock market returns evidence of predictability but not cointegration abstract this paper is a response to the literature that tests for cointegration between national stock market indices it argues that apparent findings of cointegration in other studies may often be due to the use of asymptotic rather than small sample critical values in fact economic theory suggests that cointegration is unlikely to be observed in efficient markets however this paper finds evidence for the predictability of relative returns and the existence of a winner loser effect across 16 national equity markets a conclusion is that national stock market indices include a common world component and two country specific components one permanent and one transitory

measuring the subprime crisis contagion evidence of change point analysis of copula functions in this paper we first determine the existence of structural changes in the dependence between time series of equity index returns of two markets using the change point testing method the method is based on archimedean copula functions which are able to comprehensively describe dependence characteristics of random variables the degree of financial contagion between markets is subsequently estimated using the tail dependence coefficient of copula functions before and after the change point we empirically test our method by investigating financial contagion during the subprime crisis between the us s p 500 index and five asian markets namely china japan korea hong kong and taiwan our results show that a statistically significant change point exists in the dependence between the us market and all asian stock markets except taiwan the upper tail dependence is larger after the time of change implying the existence of contagion during the banking crisis between the us and the asian economies the degree of financial contagion is also estimated and found to be consistent with market events and media reports during that period

the structure and degree of dependence a quantile regression approach abstract the copula function defines the degree of dependence and the structure of dependence this paper proposes an alternative framework to decompose the dependence using quantile regression we demonstrate that the methodology provides a detailed picture of dependence including asymmetric and non linear relationships in addition changes in the degree or structure of dependence can be modeled and tested for each quantile of the distribution the empirical part applies the framework to three different sets of financial time series and demonstrates substantial differences in dependence patterns among asset classes and through time the analysis of 54 global equity markets shows that detailed information about the structure of dependence is crucial to adequately assess the benefits of diversification in normal times and crisis times

estimating the correlation structure of international share prices recently the case for international portfolio diversification has been convincingly argued in the framework of mean variance portfolio analysis by a number of researchers however virtually no empirical documentation exists concerning the best method for estimating the correlation structure of international share prices in this paper 12 models for estimating the international correlation matrix are presented and empirically tested relative to full historical extrapolation the major evaluation criteria are the mean squared error and stochastic dominance based on the frequency distribution of the squared forecast errors the results indicate that the national mean model strictly dominates all the others in terms of forecasting accuracy in the last fifteen years or so a number of researchers have convincingly argued the case for international portfolio diversification as opposed to purely domestic diversification in the framework of mean variance portfolio analysis see e g grubel 4 levy and sarnat 8 solnik 12 mcdonald 10 lessard 6 and subrahmanyam 15 1 in spite of the emerging consensus in the academic and investment communities that investors can benefit from international diversification in terms of a more efficient risk return tradeoff virtually no empirical documentation exists concerning the best method for estimating the correlation structure of international share prices since estimating this correlation structure is a necessary precondition for being able to apply modern portfolio theory to international investments empirical examination is of major importance moreover only through empirical examination of the correlation structure will the effort to devise a simple algorithm that can be used to solve for the optimal international portfolio be facilitated in order to trace out the set of ex ante efficient international porffolios using the tenets of modern portfolio theory the investor must obtain accurate estimates of the expected return and the variance of return for each domestic and foreign security and he must also obtain accurate estimates of the correlation coefficients of the returns between each pair of securities stated in terms of his numeraire

international stock market linkages evidence from the pre and post october 1987 period abstract this paper uses recent developments in the theory of cointegration to provide new methods of testing the linkage and dynamic interactions among stock market movements our findings are in sharp contrast with previous research which discovered strong interdependence among national stock markets prior to october 1987 for the post october 1987 period however our results show that the degree of international co movements among stock price indices has increased substantially with the nikkei index the only exception furthermore the us stock market is found to have a considerable impact on the french german and uk markets in the post crash period we also find the response of the french german and uk markets to us stock market innovations to be consistent with the view of cross border informationally efficient stock markets finally we find the japanese equity market performance to have no links with both the us stock market and the stock markets in france germany and uk during the pre and post october crash period

the behavior of stock prices on ldc markets abstract the paper investigates the behavior of stock prices for a group of well established and newly emerging ldc securities markets the results suggest the probability distributions to be consistent with a lognormal distribution with some securities exhibiting non stationary variance ldc markets even though not as efficient as major dc markets are quite comparable to the smaller european markets and the behavior of security prices as reported in this study appears to be generalizable for the heavily traded segments of ldc markets

international diversification of investment portfolios u s and japanese perspectives in this paper we analyze the gains from international diversification of investment portfolios from the japanese as well as the u s perspectives the major findings of this paper include first the potential gains from international as opposed to purely domestic diversification are much greater for u s investors than for japanese investors for u s investors the gains accrue not so much in terms of lower risk as in terms of higher return and the opposite holds for japanese investors second using various ex ante international investment strategies designed to control parameter uncertainty u s investors can realize substantial gains from international diversification in out of sample periods japanese investors however can gain relatively little third hedging exchange risk generally allows the u s but not japanese investors to benefit more from international diversification for u s investors the international bond diversification with exchange risk hedging offers a superior risk return trade off than the international stock diversification with or without hedging

the interrelationships between u s and foreign equity market yields tests of granger causality this study examines the interrelationships between yields on the u s and several foreign market portfolios over the 1980 89 period tests of granger causality are used to investigate the effects of uni directional causality bi directional causality and contemporaneous adjustment in the determination of market rates of return the results indicate that international equity market returns are largely contemporaneously determined and the significance of contemporaneous effects varied over time uni directional and bi directional causality were found to be relatively weak

returns synchronization and daily correlation dynamics between international stock markets the use of close to close returns underestimates returns correlation because international stock markets have different trading hours with the availability of 16 00 london time stock market series we find dynamics of daily correlation and covariance estimated using two non synchroneity adjustment procedures to be substantially different from their synchronous counterparts conditional correlation may have different signs depending on the model and data type used other findings include volatility spillover from the us to the uk and france and a reverse spillover which is not documented before also unlike previous findings we found the increase in daily correlation is prominent only under extremely adverse conditions when a large negative return has been registered

cyclical factor utilization abstract we introduce procyclical labor and capital utilization as well as costs of rapidly increasing employment into a business cycle model plausible variations in factor utilization enable us to explain observed variability of real gnp with considerably smaller economy wide disturbances the costs of adjustment create very interesting and realistic lead and lag relationships employment does not peak until a full quarter after output workweeks effort capital utilization and productivity all sharply lead the business cycle

inflation and the optimal inventory replenishment schedule within a finite planning horizon abstract the subject of this paper is the problem of finding the optimal replenishment schedule for an inventory subject to time dependent demand and deterioration within a finite time planning horizon it is shown that taking inflation into account has a profound effect on the solution of the problem for instance there is a critical number of replenishment periods in excess of which the optimal schedule is characterized by the inclusion of token orders at the end of the planning horizon this and other conclusions obtained via a careful mathematical analysis of the problem rectify those of earlier studies

bayes stein estimation for portfolio analysis in portfolio analysis uncertainty about parameter values leads to suboptimal portfolio choices the resulting loss in the investor s utility is a function of the particular estimator chosen for expected returns so this is a problem of simultaneous estimation of normal means under a well specified loss function in this situation as stein has shown the clas sical sample mean is inadmissible this paper presents a simple empirical bayes estimator that should outperform the sample mean in the context of a portfolio simulation analysis shows that these bayes stein estimators provide significant gains in portfolio selection problems

the dynamic effects of aggregate demand and supply disturbances we interpret fluctuations in gnp and unemployment as due to two types of disturbances disturbances that have a permanent effect on output and disturbances that do not we interpret the first as supply disturbances the second as demand disturbances demand disturbances have a hump shaped mirror image effect on output and unemployment the effect of supply disturbances on output increases steadily over time peaking after two years and reaching a plateau after five years

the contagion channels of july august 2011 stock market crash a dag copula based approach abstract the objective of this paper is to empirically investigate whether there is a contagion phenomenon between the stock markets during the july august 2011 stock market crash when there is a market contagion we will identify the propagation channel through which the crash is transmitted hence after checking if there is financial contagion between the stock markets we will see if the transmission mechanism constraints of wealth outweighs that of the portfolio rebalancing an additional test covering the interdependence between the stock and bond markets during the crash helps us verify whether the transmission is due either to the cross market rebalancing channel or to the flight to quality phenomenon on the basis of the combination of the copula theory and the directed acyclic graph to study the structure of causal dependence between the stock market during the period that lies between 01 02 2010 and 28 11 2012 we show that the links between countries are different between the pre crash period and that of the crash more specifically the links that do not exist during normal times seem to have a major role during the crash period we interpret this result as an evidence of the existence of pure contagion on the one hand the tests show that the channel of the portfolio rebalancing was the major mechanism for the spread of the crash on the other hand the phenomenon of the cross market rebalancing existed only in germany whereas that of the flight to quality was in all the other studied stock markets

measures of per capita hours and their implications for the technology hours debate structural vector autoregressions give conflicting results on the effects of technology shocks on hours the results depend crucially on the assumed data generating process for hours per capita we show that the standard measure of hours per capita and productivity have significant low frequency movements that are the source of the conflicting results hodrick prescott hp filtered hours per capita produce results consistent with those obtained when hours are assumed to have a unit root we show that important sources of the low frequency movements in the standard measure are sectoral shifts in hours and the changing age composition of the working age population when we control for these low frequency components to determine the effect of technology shocks on hours using long run restrictions we get one consistent answer hours decline in the short run in response to a positive technology shock we further extend the analysis by examining the effects of demographic controls on the impulse responses to investment specific technology shocks our results are less conclusive

stochastic trends and economic fluctuations are business cycles mainly the result of permanent shocks to productivity this paper uses a long run restriction implied by a large class of real business cycle models identifying permanent productivity shocks as shocks to the common stochastic trend in output consumption and investment to provide new evidence on this question econometric tests indicate that this common stochastic trend cointegration implication is consistent with postwar u s data however in systems with nominal variables the estimates of this common stochastic trend indicate that permanent productivity shocks typically explain less than half of the business cycle variability in output consumption and investment copyright 1991 by american economic association

effective tax rates in macroeconomics cross country estimates of tax rates on factor incomes and consumption abstract this paper proposes a method for computing tax rates using national accounts and revenue statistics using this method we construct time series of tax rates for large industrial countries the method identifies the revenue raised by different taxes at the general government level and defines aggregate measures of the corresponding tax bases this method yields estimates of effective tax rates on factor incomes and consumption consistent with the tax distortions faced by a representative agent in a general equilibrium framework these tax rates compare favorably with existing estimates of marginal tax rates and highlight important international differences in tax policy

incentive and production decisions for remanufacturing operations we consider a manufacturer producing original products using virgin materials and remanufactured products using returns from the market where the amount of returns depend on the incentive offered by the manufacturer we determine the optimal value of this incentive and the optimal production quantities in a stochastic demand setting with partial substitution we analyze 3 different models in centralized and decentralized settings where the collection process of the returns is managed by a collection agency in the decentralized setting we also analyze contracts to coordinate the decentralized systems and determine the optimal contract parameters finally we present our computational study to observe the effect of different parameters on the system performance

in search of capital crunch supply factors behind the credit slowdown in japan the seeming failure of loose monetary policy to reactivate japan s economy has led some observers to suggest that the usual credit channels through which monetary policy affects the real economy are blocked and this is because of a pervasive shortage of bank capital that has induced a leftward shift in the supply of bank credit this is the so called capital crunch hypothesis this paper finds support for the hypothesis in the bank data for 1997 a year during which the landscape of the japanese financial system underwent some fundamental changes

the benefits from international diversification for nordic investors abstract in this paper we investigate the magnitude of the benefits from international diversification from the nordic point of view special attention is paid to whether potentially increased co movement of stock markets together with more volatile nordic currencies have resulted in decreased benefits from international diversification towards the end of the 1980s moreover the paper presents evidence on the benefits from international diversification for a currency which has recently started its free float the finnish markka fim we find significant increases in stock market co movement both unhedged ex ante strategies as well as strategies hedged for exchange rate risk are investigated revealing substantial benefits from international diversification for the nordic countries however we obtain mixed results concerning the question of the optimality of hedging

japan s financial crisis and economic stagnation the recent japanese economic experience has been dismal growth has collapsed deflation has taken hold and the financial system is in shambles we begin our story by documenting the macroeconomic troubles that appear to have triggered the collapse of japan s financial sector we argue however that the macroeconomic factors alone are not likely to explain the full extent of the problems in the japanese financial system we then turn to the sector specific factors that are facing the japanese banks insurance companies and government financial institutions which together constitute roughly three quarters of the financial system finally we provide estimates of the size of the losses that have been accumulated and review the steps necessary to resolve the problems promptly so that the losses stop growing the estimated losses from japan s financial system problems which presumably will be borne by taxpayers eventually are huge even our fairly conservative estimate suggests the full cost to the taxpayers is at least 20 percent of japan s gdp the sheer size of the cost along with the interaction among the related economic problems has made a decisive resolution of the problems politically difficult

international listings of stocks the case of canada and the u s the globalization of financial markets has seen ever increasing numbers of firms choosing to list their stocks on foreign exchanges we examine whether the extent of economic and financial market integration or segmentation between a firm s home country and listing country influences stock price reaction by examining the case of two similar countries the u s and canada during the 100 days before the week of interlisting in the u s risk adjusted stock prices of canadian firms rise on average by over 9 4 rise by an additional 2 around the interlisting date but follow with a corresponding drop of 9 7 in the 100 days after interlisting we interpret this evidence to be consistent with the financial market segmentation between canada and the u s however a subsample of canadian resource firms does not exhibit these stock price effects suggesting industry related factors may also be an important determinant of integration we also find average trading volume in interlisted stocks more than doubles in the months following interlisting

investment shocks and business cycles abstract the origins of business cycles are still controversial among macroeconomists this paper contributes to this debate by studying the driving forces of fluctuations in an estimated new neoclassical synthesis model of the u s economy in this model most of the variability of output and hours at business cycle frequencies is due to shocks to the marginal efficiency of investment imperfect competition and to a lesser extent technological frictions are the key to their transmission although labor supply shocks explain a large fraction of the fluctuations in hours at very low frequencies they are irrelevant over the business cycle this finding is important because the microfoundations of these disturbances are widely regarded as unappealing

trend breaks long run restrictions and contractionary technology improvements abstract structural vector autoregressions with long run restrictions are extraordinarily sensitive to low frequency correlations recent literature finds that the estimated effects of technology shocks are sensitive to how one treats hours per capita however after allowing for statistically and economically significant trend breaks in productivity results are much less sensitive hours fall when technology improves the issue is that the common high low high pattern of productivity growth and hours i e the low frequency correlation inevitably leads to a positive estimated response the trend breaks control for this correlation this example suggests a practical need for care in using long run restrictions

structure and performance global interdependence of stock markets around the crash of october 1987 using a new data source on share price indices this paper finds no evidence that the substantial variations in the reactions to the crash of october 1987 across countries are related to the structure of markets however trading halts and capital controls on residents may have moderated the speed of declines in some markets the paper also examines one measure of interlinkages between markets the trading of foreign stocks on domestic markets and finds this to be closely related to interdependence between markets

risk2 measuring the risk in value at risk the recent derivatives disasters have focused the attention of the finance industry on the need to control financial risks better this search has led to a uniform measure of risk called value at risk var which is the expected worst loss over a given horizon at a given confidence level var numbers however are themselves affected by sampling variation or estimation risk thus the risk in value at risk itself nevertheless given these limitations var is an indispensable tool to control financial risks this article lays out the statistical methodology for analyzing estimation error in var and shows how to improve the accuracy of var estimates

price limit performance evidence from the tokyo stock exchange price limit advocates claim that price limits decrease stock price volatility counter overreaction and do not interfere with trading activity conversely price limit critics claim that price limits cause higher volatility levels on subsequent days volatility spillover hypothesis prevent prices from efficiently reaching their equilibrium level delayed price discovery hypothesis and interfere with trading due to limitations imposed by price limits trading interference hypothesis empirical research does not provide conclusive support for either positions we examine the tokyo stock exchange price limit system to test these hypotheses our evidence supports all three hypotheses suggesting that price limits may be ineffective

common trends and convergence south east asian equity markets 1988 1999 abstract this paper uses two different estimation approaches to demonstrate that equity markets in south east asia have shown signs of converging during the 1990s according to the haldane and hall economic journal 101 436 443 1991 method of measuring convergence a subset of asian markets had converged by mid 1997 this process appears to have been abruptly halted and somewhat reversed by the recent financial crisis we find that in general there are two common trends present in the eight asian equity market indices modeled here and also two trends when the us market is additionally included in a johansen var

multivariate cointegration analysis of the finnish japanese stock markets abstract in this paper evidence on the cointegration between the finnish and japanese financial markets is provided the results obtained by multivariate cointegration analysis indicate that changes in the nikkei financial market have an impact on the error correction mechanism of the finnish stock market

stock market crashes and the performance of circuit breakers empirical evidence this study examines the behavior of a small stock market with circuit breakers and with a one hour preauction order imbalance disclosure during the october 1987 crash the crash and its aftershocks lasted for a week and selling pressure was concentrated in higher beta larger capitalization and lower leverage firm stocks circuit breakers when implemented reduced the next day opening order imbalance and the initial price loss however they had no effect on the long run response some price overreaction and reversal phenomena also are documented

order imbalance liquidity and market returns traditionally volume has provided the link between trading activity and returns we focus on a hitherto unexplored but intuitive measure of trading activity the aggregate daily order imbalance on the new york stock exchange signed order imbalances increase decrease following market declines rises which reveals that investors are contrarians on aggregate order imbalances in either direction either excess buy or sell orders reduce liquidity market wide returns are strongly affected by contemporaneous and lagged order imbalances market wide returns reverse themselves after high negative imbalance large negative return days the magnitude of this reversal is partially predictable from the level of the imbalance and return even after controlling for aggregate market volume and liquidity market returns are affected by order imbalance

correlated arch corrarch modelling the time varying conditional correlation between financial asset returns abstract although the time variation of the conditional correlations of asset returns is a well established stylized fact and of crucial importance for efficient financial decisions there is no explicit general model available for its estimation and forecasting in this paper we propose a bivariate garch covariance structure in which conditional variances can follow any garch type process while conditional correlation is generated by an explicit discrete time stochastic process the corrarch process a high order corrarch can parsimoniously be represented by a corgarch process the model successfully generates the reported stylized facts establishes an autocorrelation structure for correlations and thus provides an explicit framework for out of sample forecasting we provide empirical evidence from the g7 stock market indexes

time varying quantile association regression model with applications to financial contagion and var abstract this paper develops a quantile association regression model which is able to capture the dynamic quantile dependence in the tails of conditional distributions the association measure the quantile specific odds ratio qor captures the tendency of two random variables being simultaneously below specific quantiles it is independent of marginal distributions and invariant to monotonic transformation and enjoys methodological advantages over popular alternatives such as the copula the ability of the qor measure to capture and forecast a range of different dependence structures is first shown via simulations in the financial application we implement the model and compute the qor on a daily basis to assess contagion for 10 stock markets during two recent crises our empirical results show that contagion exists during the us banking crisis between the us and all tested markets and between greece and the tested european markets during the euro crisis hence the model is able to capture the changes in quantile dependence between stock markets and offer a vivid description of market events in addition the model provides an accurate valuation of daily value at risk var

order imbalances and stock price movements on october 19 and 20 1987 on october 19 1987 nyse stocks in the s p index declined seven percentage points more than nyse stocks not in this index in the first hour of trading on october 20 the s p stocks virtually recovered to the level of the non s p stocks there is a strong relation between order imbalances and stock price movements both in analyses of time series and cross sections thus in addition to the breakdown in the linkage between future prices and the spot index on these two days there were also breakdowns in the linkage among nyse stocks

risk reduction by diversification in the nordic stock markets empirical examination of the ex post potential gains of risk reduction through international portfolio diversification started with grubel 1968 levy and sarnat 1970 solnik 1974 and lessard 1974 in their survey of international finance adler and dumas 1983 p 938 summed up the results the potential for international diversification to reduce risk seems unquestionable in the wake of increasing liberalization for international portfolio investment more recent contributions include jorion 1985 1989 grauer and hakansson 1987 and levy and lerman 1988 the results of the pioneers have been corroborated by contemporary research and according to jorion 1989 p 54 international diversification extolled by grubel as early as 1968 seems to have delivered on its promises despite the long tradition of studies in international portfolio diversification there has been no such work regarding the nordic markets this paper fills the gap through an analysis of potential gains from international diversification for different nordic investors danish finnish norwegian and swedish if they invest in all the nordic equity markets until the beginning of the 1980s nordic investors particularly in finland and sweden faced legal restrictions on investment abroad see nordiska radet 1987 adler and dumas 1983 have pointed out that such restrictions would lead to partially or fully segmented markets and hietala 1989 has shown the existence of premiums in the finnish stock market in our study we do not make any direct test of whether the nordic equity markets have been segmented or integrated but our results might provide some indirect evidence the nordic countries are generally viewed as fairly homogeneous from a social political and economic point of view while international diversifi

extreme coexceedances in new eu member states stock markets abstract we analyze the financial integration of the new european union eu member states stock markets using the negative positive coexceedance variable that counts the number of large negative large positive returns on a given day across the countries a similar analysis is performed for the old eu countries we use a multinomial logit model to investigate how persistence asset classes and volatility are related to the coexceedance variables we find that the effects differ a between negative and positive coexceedance variables b between old and new eu member states and c before and after the eu enlargement in 2004 suggesting a closer connection of new eu stock markets to those in western europe

international portfolio diversification with estimation risk international portfolio diversification has long been advocated as a way of enhancing average returns while reducing portfolio risk for the investor who considers diversifying into foreign securities this proposition however relies on the assumption that the required inputs to the classical mean variance analysis are known with certainty typically expected returns variances and covariances are simply replaced by their ex post sample values and the optimal portfolio is derived without mentioning the uncertainty inherent in these parameter values but the rational investor should take this uncertainty into account when forming expectations and probably will consider estimators that are less subject to estimation error than the classical sample mean this paper investigates alternative estimators of expected returns and their implications for the alleged gains from diversification an important observation is the crucial influence that errors in estimating expected returns have on portfolio analysis a closer examiprevious studies of international portfolio diversification have relied on ex post meanvariance analysis without considering the problem of estimation risk typically past averages are substituted for expected returns and no allowance is made for the uncertainty inherent in these parameter values first i demonstrate the shortcomings of such an approach and second i investigate another method of estimating expected returns initially proposed by stein by shrinking the sample averages toward a common mean i find that the out of sample performance of the optimal portfolio is substantially increased one of the implications of this method is that the classical conclusions vastly overestimate the possible gains in average returns instead benefits from diversification are more likely to accrue from a reduction in risk this paper draws on part of my dissertation at the university of chicago i am grateful to arnold zellner michael mussa george constantinides and especially john bilson for useful discussions and comments numerous improvements were also suggested by the referee this research received the generous financial support of the college interuniversitaire d etudes doctorales dans les sciences du management

fuzzy multicycle manufacturing remanufacturing production decisions considering inflation and the time value of money abstract under the background of global low carbon production this paper constructed a multicycle dynamic programming model to study the fuzzy manufacturing remanufacturing production decisions by taking into account inflation and the time value of money furthermore we analysed the impact of inflation and the time value of money on manufacturing remanufacturing production decisions by dynamic programming with the signed distance method the results indicated that i the optimal production cycle is positively related to the adjusting interest rate and when the optimal production cycle is larger than the minimum feasible cycle number the maximum profits first increase and then decrease and ii when the demand is fixed the total production quantity of manufactured products decreases and the total production quantity of remanufactured products increases with the increase in the adjusted interest rate

capital controls and international capital market segmentation the evidence from the japanese and american stock markets the paper focuses on two countries japan and the u s to test the integration of capital markets in japan the enactment of the foreign exchange and foreign trade control law in december of 1980 amounted to a true regime switch that virtually eliminated capital controls using multifactor asset pricing models we show that the price of risk in the u s and japanese stock markets was different before but not after the liberalization this evidence supports the view that governments are the source of international capital market segmentation the notion that world capital markets are perfectly integrated is central to most theoretical developments in both international finance and macroeconomics indeed it also lies behind much of the recent international policy discussion capital markets are integrated if assets with perfectly correlated rates of return have the same price regardless of the location in which they are traded 1 segmentation may arise either because of government impediments to capital movements or because of individuals attitudes or irrationality if the hypothesis that the international capital markets are integrated is rejected there is still an important empirical question left unanswered which is related to the source of segmentation while there is a rich body of theoretical research on international market integration only a few studies have tried to investigate this important question empirically a first group of empirical studies on market integration has generally adopted

explaining co movements between stock markets the case of us and germany abstract we explain co movements between stock markets by explicitly considering the distinction between interdependence and contagion we propose and implement a full information approach on data for us and germany to provide answers to the following questions i is there long term interdependence between us and german stock markets ii is there short term interdependence and contagion between us and german stock markets i e do short term fluctuations of the us share prices spill over to german share prices and is such co movement unstable over high volatility episodes our answers are respectively no to the first question and yes to the second one

the role of technology and nontechnology shocks in business cycles this article proposes a method to identify technology and nontechnology shocks that permanently affect labor productivity and applies this method to data for the g7 countries in most cases whereas technology improvements have negative or weak effects on hours worked positive permanent nontechnology shocks are expansionary permanent nontechnology shocks play an important role in business cycles particularly in the united states and japan and account for 71 of a large reduction in japan s detrended output from 1991 to 2002 credit conditions are likely to be an important driver of variations in permanent nontechnology shocks

the dynamic effects of neutral and investment specific technology shocks the neoclassical growth model is used to identify the short run effects of neutral technology shocks which affect the production of all goods homogeneously and investment specific shocks which affect only investment goods the real equipment price crucial for identifying the investment shocks experiences an abrupt increase in its average rate of decline in 1982 so the analysis is based on a split sample on the basis of the preferred specification the two technology shocks account for 73 percent of hours and 44 percent of output s business cycle variation before 1982 and 38 percent and 80 percent afterward the shocks also account for more than 40 percent of hours and 58 percent of output s forecast errors over a three to eight year horizon in both samples the majority of these effects are driven by the investment shocks

caviar conditional autoregressive value at risk by regression quantiles value at risk var has become the standard measure of market risk employed by financial institutions for both internal and regulatory purposes var is defined as the value that a portfolio will lose with a given probability over a certain time horizon usually one or ten days despite its conceptual simplicity its measurement is a very challenging statistical problem and none of the methodologies developed so far give satisfactory solutions interpreting the var as the quantile of future portfolio values conditional on current information we propose a new approach to quantile estimation which does not require any of the extreme assumptions invoked by existing methodologies such as normality or i i d returns the conditional autoregressive value at risk or caviar model moves the focus of attention from the distribution of returns directly to the behavior of the quantile we specify the evolution of the quantile over time using a special type of autoregressive process and use the regression quantile framework introduced by koenker and bassett to determine the unknown parameters since the objective function is not differentiable we use a differential evolutionary genetic algorithm for the numerical optimization utilizing the criterion that each period the probability of exceeding the var must be independent of all the past information we introduce a new test of model adequacy the dynamic quantile test applications to simulated and real data provide empirical support to this methodology and illustrate the ability of these algorithms to adapt to new risk environments

gains from international diversification 1968 85 returns on portfolios of stocks and bonds this paper applies the multi period investment model to a universe of international securities on the basis of the simple probability assessment approach our principal findings are 1 the gains from including non u s asset categories in the universe were remarkably large in some cases statistically significant especially for the highly risk averse strategies 2 the gains from removing the no leverage constraint were more substantial than they were in the absence of non u s securities and 3 there is strong evidence of market segmentation in that the optimal levels of investment in u s securities were mostly zero in the presence of the non u s asset categories

contagion around the october 1987 stock market crash abstract this study investigates financial contagion among seven international stock markets around the october 19 1987 crash building on a recent advance in vector autoregression analysis by swanson n granger c w j 1997 impulse response functions based on a causal approach to residual orthogonalization in vector autoregression journal of the american statistical association 92 357 367 data determined historical decompositions are conducted to provide a day by day picture of price fluctuation transmission which is crucial to explore the financial contagion pattern characterized by rich dynamics the results clearly show that the crash originated in the us market and that an upward movement in the japanese market after the crash helped the recovery in the us market which has not yet been empirically documented in the literature