inducing human capital formation migration as a substitute for subsidies abstract when productivity is fostered by an individual s own human capital as well as by the economy wide average level of human capital individuals under invest in human capital the provision of subsidies for the formation of human capital conditional on the subsidy being self financed by tax revenues can bring the economy to its socially optimal level of human capital yet a strictly positive probability of migration to a richer country by raising both the level of human capital formed by optimizing individuals in the home country and the average level of human capital of non migrants in the country can enhance welfare and nudge the economy toward the social optimum indeed under a well controlled restrictive migration policy the welfare of all workers is higher than in the absence of this policy

a brain gain with a brain drain abstract we study human capital depletion and formation in an economy open to out migration as opposed to an economy which is closed under the assumption of asymmetric information the enlarged opportunities and the associated different structure of incentives can give rise to a brain gain in conjunction with a brain drain migration by high skill members of its workforce notwithstanding the home country can end up with a higher average level of human capital per worker

evaluation of stock allocation policies in a divergent inventory system with shipment consolidation in this paper we consider a one warehouse n retailer inventory system characterized by access to real time point of sale data and a time based dispatching and shipment consolidation policy at the warehouse more precisely inventory is reviewed continuously while a consolidated shipment for example a truck to all retailers is dispatched from the warehouse at regular time intervals the focus is on investigating the cost benefits of using state dependent myopic allocation policies instead of a simple fcfs first come first serve rule to allocate shipped goods to the retailers the analysis aims to shed some light on when if ever fcfs is a reasonable policy to use in this type of system the fcfs allocations of items to retailers are determined by the sequence in which retailer orders or equivalently customer demands arrive to the warehouse applying the myopic policy enables the warehouse to postpone the allocation decision to the moment of shipment from the warehouse or the moments of delivery to the different retailers and to base it on the inventory information available at those times the myopic allocation method we study is often used in the literature on periodic review systems

a framework for integrated risk management in international business treatments of risk in the international management literature largely focus on particular uncertainties to the exclusion of other interrelated uncertainties this paper develops a framework for categorizing the uncertainties faced by firms operating internationally and outlines both financial and strategic corporate risk management responses

brain drain and human capital formation in developing countries winners and losers using new data on emigration rates by education level we examine the impact of brain drain migration on human capital formation in developing countries we find evidence of a positive effect of skilled migration prospects on gross human capital formation in a cross section of 127 countries for each country of the sample we then estimate the net effect of the brain drain using counterfactual simulations countries combining relatively low levels of human capital and low emigration rates are shown to experience a beneficial brain drain and conversely there are more losers than winners and the former tend to lose relatively more than what the latter gain

money bonds and foreign exchange in the theory of finance capital markets provide securities which allow the ownership of productive assets to be allocated among investors according to their willingness to bear risk in exchange for return and independently of their tastes for the productive services provided by the assets this paper uses the theory of finance to study the role of money as a productive asset and the transformation of money into a portfolio asset true to its purpose the capital market provides securities nominal bonds that allow an allocation of the current services of the money supply according to its current productivity and without regard for its future purchasing power risk and an allocation of the future purchasing power risk of the money supply according to the willingness of investors to bear this risk in exchange for return and without regard for investor needs for the future transactions services of money in open

multilateral resistance to migration the rate of migration observed between two countries does not depend solely on their relative attractiveness but also on the one of alternative destinations following the trade literature we term the influence exerted by other destinations on bilateral flows as multilateral resistance to migration and we show how it can be accounted for when estimating the determinants of migration rates in the context of a general individual random utility maximization model we propose the use of the common correlated effects estimator pesaran 2006 and apply it to high frequency data on the spanish immigration boom between 1997 and 2009 compared to more restrictive estimation strategies developed in the literature the bias goes in the expected direction we find a smaller effect of gdp per capita and a larger effect of migration policies on bilateral rates

the informational structure of migration decision and migrants self selection abstract we analyze the pattern of migrants self selection in unobservables when there is uncertainty about foreign wages negative selection becomes more likely and a greater dispersion of wages at destination no longer suffices to predict that immigrants will outperform natives

applied welfare economics with discrete choice models economists have been paying increasing attention to the study of situations in which consumers face a discrete rather than a continuous set of choices such models are potentially very important in evaluating the impact of government programs upon consumer welfare but very little has been said in general regarding the tools of applied welfare economics indiscrete choice situations this paper shows how the conventional methods of applied welfare economics can be modified to handle such cases it focuses on the computation of the excess burden of taxation and the evaluation of quality change the results are applied to stochastic utility models including the popular cases of probit and logit analysis throughout the emphasis is on providing rigorous guidelines for carrying out applied work this abstract was borrowed from another version of this item

brain waste educated immigrants in the u s labor market the authors investigate the occupational placement of immigrants in the u s labor market using census data they find striking differences among highly educated immigrants from different countries even after they control for individuals age experience and level of education with some exceptions educated immigrants from latin american and eastern european countries are more likely to end up in unskilled jobs than immigrants from asia and industrial countries a large part of the variation can be explained by attributes of the country of origin that influence the quality of human capital such as expenditure on tertiary education and the use of english as a medium of instruction performance is adversely affected by military conflict at home which may weaken institutions that create human capital and lower the threshold quality of immigrants the selection effects of u s immigration policy also play an important role in explaining cross country variation the observed under placement of educated migrants might be alleviated if home and host countries cooperate by sharing information on labor market conditions and work toward the recognition of qualifications

migration with endogenous moving costs we study a dynamic model of labor migration in which moving costs decrease with the number of migrants already settled in the destination this assumption is supported by sociological studies of migrant networks with endogenous moving costs migration occurs gradually over time once it starts it develops momentum and migratory flows may increase even as wage differentials narrow in addition migration tends to follow geographical channels and low moving cost individuals migrate first these patterns are consistent with historical evidence from the great black migration of 1915 1960 in the united states much of which cannot be reconciled with existing migration models excerpt

brain drain and economic growth theory and evidence we focus on the impact of migration prospects on human capital formation and growth in a small open developing economy we assume that agents are heterogeneous in skills and take their educational decisions in a context of uncertainty regarding future migrations we distinguish two growth effects an ex ante brain effect migration prospects foster investments in education because of higher returns abroad and an ex post drain effect because of actual migration flows the case for a beneficial brain drain bbd emerges when the first effect dominates i e when the average level of human capital is higher in the economy opened to migrations than in the closed economy we derive the theoretical conditions required for such a possibility to be observed using cross section data for 37 developing countries we find that the possibility of a bbd could be more than a theoretical curiosity

the hedging of an uncertain future foreign currency cash flow this paper derives the optimal hedge of an uncertain unknown quantity future foreign currency cash flow this more general optimal hedge includes the traditional hedge for a certain known quantity future foreign currency cash flow as a special case the optimal hedge is found to be unbounded and determined by firm specific conditions including the variance of the expected cash flow and the correlation of that future cash flow with actual exchange rate movements simulated optimal hedge values are found for u s based multinational firms possessing s dm cash flows using exchange rate data for the 1981 1987 period special cases in which the optimal hedge ratio equals zero and one also are identified and we show that cash flow uncertainty can strongly affect the effectiveness of hedging

can a brain drain be good for growth in the source economy this paper analyzes the interaction between income distribution human capital accumulation and migration it shows that when migration is not a certainty a brain drain may increase average productivity and equality in the source economy even though average productivity is a positive function of past average levels of human capital in an economy it is also shown how the temporary possibility of emigration may permanently increase the average level of productivity of an economy

crossing the border self selection earnings and individual migration decisions many empirical studies on the determinants of international migration flows rely exclusively on macro data and do not account for migrants self selection we analyze a very interesting episode in international migration for which we are able to gather individual level data covering all relevant countries namely the exodus of ecuadorians to spain and the us in the aftermath of the economic collapse of 1999 specifically we produce selection corrected predictions of counterfactual individual earnings and use them to estimate a discrete choice migration equation that allows for correlated errors across destinations and a rich structure of migration costs we find that earnings significantly shape individual migration decisions even in an episode in which ecuadorians mostly chose spain where earnings were lower than in the us and they contribute to explaining the observed composition of migration flows moreover our estimates show that changes in earnings at a particular destination have a larger effect on destination choice conditional on migration than on the scale of migration

optimal hedging of uncertain and long term foreign exchange exposure abstract this paper employs stochastic dynamic programming to analyze two hedging problems which arise frequently especially in international finance one is the hedging of an uncertain exposure when the arrival of new information is anticipated it is shown that a risk averse agent will hedge a fraction of his maximum potential exposure to reduce risk the second problem concerns hedging an exposure which extends beyond the delivery date of the available forward contract the solution yields a rule by which successive contracts can be linked to form an optimal hedging strategy a short empirical study illustrates this rule

understanding different migrant selection patterns in rural and urban mexico abstract the productive characteristics of migrating individuals emigrant selection affect welfare the empirical estimation of the degree of selection suffers from a lack of complete and nationally representative data this paper uses a dataset that addresses both issues the enet mexican labor survey which identifies emigrants right before they leave and allows a direct comparison to non migrants this dataset presents a relevant dichotomy it shows negative selection for urban mexican emigrants to the united states for the period 2000 2004 together with positive selection in mexican emigration out of rural mexico to the united states in the same period three theories that could explain this dichotomy are tested whereas higher skill prices in mexico than in the us are enough to explain half of the negative selection result in urban mexico its combination with network effects and wealth constraints fully accounts for positive selection in rural mexico

batch size and stocking levels in multi echelon repairable systems in multi echelon repairable inventory systems with high set up cost for order and or high demand rates the use of batch ordering may be more cost effective than the common s 1 s ordering policy this paper addresses the issue of determining the optimal order batch size and stocking levels at the stocking locations in such a system a power approximation is used to estimate the total system stock and backorder levels from which the optimal batch size can be readily determined a search routine involving one pass searches are then followed to obtain the stocking levels at the depot and the local sites of the system this procedure has been evaluated using 900 test cases and has been found to be very effective the power approximation approach also results in a simple analytical relationship to test whether or not s 1 s is an optimal ordering policy for repairable items in a multi echelon environment

immigrant selection in the oecd in this paper we examine the determinants of educational selectivity in immigration using immigrant stock data for 70 source countries and 21 oecd destination countries as observed in the year 2000 2001 we develop a variant of the roy model to estimate the determinants of educational selectivity two key findings emerge first the effect of the skill premium which is at the core of the roy model can be observed only after we take into account the poverty constraints operating in the source countries second cultural similarities colonial legacies and physical distance are often more important determinants of educational selectivity than wage incentives or selective immigration policy

optimization of order up to s policies for two level inventory systems with compound poisson demand abstract we consider a two level inventory system with one warehouse and n retailers leadtimes are constant and the retailers face different compound poisson demand processes all facilities apply order up to s replenishment policies we show how to evaluate holding and shortage costs exactly

globalization brain drain and development this paper reviews four decades of economics research on the brain drain with a focus on recent contributions and on development issues we first assess the magnitude intensity and determinants of the brain drain showing that brain drain or high skill migration is becoming a dominant pattern of international migration and a major aspect of globalization we then use a stylized growth model to analyze the various channels through which a brain drain affects the sending countries and review the evidence on these channels the recent empirical literature shows that high skill emigration need not deplete a country s human capital stock and can generate positive network externalities three case studies are also considered the african medical brain drain the exodus of european scientists to the united states and the role of the indian diaspora in the development of india s information technology sector we conclude with a discussion of the implications of the analysis for education immigration and international taxation policies in a global context

income maximization and the selection and sorting of international migrants abstract two prominent features of international labor movements are that the more educated are more likely to emigrate positive selection and more educated migrants are more likely to settle in destination countries with high rewards to skill positive sorting using data on emigrant stocks by schooling level and source country in oecd destinations we find that a simple model of income maximization can account for both phenomena results on selection show that migrants for a source destination pair are more educated relative to non migrants the larger is the absolute skill related difference in earnings between the destination country and the source results on sorting indicate that the relative stock of more educated migrants in a destination is increasing in the absolute earnings difference between high and low skilled workers we use our framework to compare alternative specifications of international migration estimate the magnitude of migration costs by source destination pair and assess the contribution of wage differences to how migrants sort themselves across destination countries

self selection and the earnings of immigrants this paper analyzes the way in which the earnings of the immigrant population may be expected to differ from the earnings of the native population because of the endogeneity of the decision to migrate the empirical study shows that differences in the u s earnings of immigrants with the same measured skills but from different home countries are attributable to variations in political and economic conditions in the countries of origin at the time of migration excerpt

spare parts management linking distributional assumptions to demand classification spare parts are known to be associated with intermittent demand patterns and such patterns cause considerable problems with regards to forecasting and stock control due to their compound nature that renders the normality assumption invalid compound distributions have been used to model intermittent demand patterns there is however a lack of theoretical analysis and little relevant empirical evidence in support of these distributions in this paper we conduct a detailed empirical investigation on the goodness of fit of various compound poisson distributions and we develop a distribution based demand classification scheme the validity of which is also assessed in empirical terms our empirical investigation provides evidence in support of certain demand distributions and the work described in this paper should facilitate the task of selecting such distributions in a real world spare parts inventory context an extensive discussion on parameter estimation related difficulties in this area is also provided

are immigrants favorably self selected one of the standard propositions in the migration literature is that migrants tend to be favorably self selected for labor market success that is economic migrants are described as tending on average to be more able ambitious aggressive entrepreneurial or otherwise more favorably selected than similar individuals who choose to remain in their place of origin in recent years there have been challenges to the general proposition of the favorable selectivity of migrants in addressing this issue this paper considers alternative specifications of the migration model that are relevant for the issue of migrant selectivity excerpt

controlling inventories in divergent supply chains with advance order information this paper considers a generic one warehouse multiple retailer inventory system under continuous review where customers provide perfect advance order information more specifically each customer order entails a due date specifying when the customer wants the item delivered the information is perfect in the sense that a placed order cannot be revised with the intent of using the advance order information fully throughout the supply chain each installation replenishes its stock using order base stock policies see hariharan and zipkin 1995 as for stock allocation the presence of advance order information at the central warehouse raises important questions regarding when reservations should be made for different retailers i e how to make best use of the available temporal information to allocate items to retailers exact and approximate cost evaluation techniques are presented for the general case the general reservation policy as well as for the two special cases of reserving as early as possible the complete reservation policy and as late as possible the last minute allocation policy a numerical study illustrates the performance of the proposed heuristics and provides insights on the value of using advance order information in supply chain inventory control

selective immigration policies migrants education and welfare at origin abstract destination countries are increasingly adopting selective immigration policies these can effectively increase migrants average education even if one allows for endogenous schooling decisions and education policies at origin still more selective immigration policies can reduce social welfare at origin

using survey data to resolve the exchange risk exposure puzzle evidence from u s multinational firms while in previous literature foreign currency exposure is estimated to be surprisingly small and insignificant we question in this paper the rationality assumption and show that the traditional use of realized exchange rate changes to approximate unexpected currency shocks leads to a strong underestimation of the influence that exchange rates play in determining firm valuations in light of a unique survey data base of individual exchange rate expectations we distinguish between realized and unexpected foreign currency movements and find that half of our sample of 935 u s firms with real operations in foreign countries is significantly exposed to unexpected exchange rate movements in line with previously reported results foreign exchange risk exposure is found to become increasingly perceptible when the return horizon is lengthened the difference between the exposure to realized versus unexpected exchange rate movements is however decreasing when lengthening the horizon suggesting that the more market participants disagree about the future path of currency values the less investors and or managers are likely to use the publicly available forecasts in their pricing and hedging decisions

heaven s swing door endogenous skills migration networks and the effectiveness of quality selective immigration policies a growing number of oecd countries are leaning toward the adoption of selective immigration policies which are expected to raise the quality or education level of migrants this view neglects two important dynamic effects the role of migration networks which could reduce the quality of migrants and the responsiveness of education decisions to the prospect of migration we propose a model of self selection into migration with endogenous education choices which predicts that migration networks and the quality of migrants can be positively associated when destination countries adopt sufficiently selective immigration policies empirical evidence presented as background motivation suggests that this is indeed the case

is migration a good substitute for education subsidies assuming a given educational policy the recent brain drain literature reveals that skilled migration can boost the average level of schooling in developing countries this paper introduces educational subsidies determined by governments concerned by the number of skilled workers remaining in the country the theoretical analysis shows that developing countries can benefit from skilled emigration when educational subsidies entail high fiscal distortions however when taxes are not too distortionary it is desirable to impede emigration and subsidize education the authors investigate the empirical relationship between educational subsidies and migration prospects obtaining a negative relationship for 105 countries based on this result the analysis revisits the country specific effects of skilled migration upon human capital the findings show that the endogeneity of public subsidies reduces the number of winners and increases the magnitude of the losses

exact and approximate evaluation of batch ordering policies for two level inventory systems we consider a two level inventory system with one warehouse and n identical retailers lead times transportation times are constant and the retailers face independent poisson demand in a previous paper we derived a recursive procedure for determining the policy costs for an average item in case of one for one replenishment policies in this paper we show how these results can be used for the exact or approximate evaluation of more general policies where both the retailers and the warehouse order in batches we compare our methods to the method recently suggested by a svoronos and p zipkin

networks in the modern economy mexican migrants in the u s labor market this paper attempts to identify job networks among mexican migrants in the u s labor market the empirical analysis uses data on migration patterns and labor market outcomes based on a sample of individuals belonging to multiple origin communities in mexico over a long period of time each community s network is measured by the proportion of the sampled individuals who are located at the destination the united states in any year we verify that the same individual is more likely to be employed and to hold a higher paying nonagricultural job when his network is exogenously larger by including individual fixed effects in the employment and occupation regressions and by using rainfall in the origin community as an instrument for the size of the network at the destination

evaluation of installation stock based r q policies fortwo level inventory systems with poisson demands we consider a two level inventory system with one warehouse and n retailers leadtimes transportation times are constant and the retailers face different poisson demand processes all facilities apply continuous review installation stock r q policies with different reorder points and batch quantities we show how to evaluate holding and shortage costs exactly in case of two retailers in case of more than two retailers we use the same methodology as an approximation when evaluating costs at a certain retailer the other retailers are then aggregated into a single retailer

international migration self selection and the distribution of wages evidence from mexico and the united states we use the 1990 and 2000 mexican and u s population censuses to test borjas s negative selection hypothesis that the less skilled are those most likely to migrate from countries with high skill premia earnings inequality to countries with low skill premia earnings inequality we find that mexican immigrants in the united states are more educated than nonmigrants in mexico and were mexican immigrants to be paid according to current skill prices in mexico they would be concentrated in the middle of mexico s wage distribution these results are inconsistent with the negative selection hypothesis and instead suggest that there is intermediate selection of immigrants from mexico

management of foreign exchange risk a review article this paper reviews the literature on foreign exchange risk management ferm which has burgeoned during the last decade scholars and practioners emerging interest in foreign exchange risk management was spurred by the advent of fluctuating exchange rates in the early seventies as well as by the pronouncement of the infamous fasb statement no 8 in 1976 which laid down unambiguous guidelines for consolidating financial statements of multinational corporations a normative rather than a market view of foreign exchange risk management is taken and accordingly the author reviews first the two key informational inputs necessary for any foreign exchange risk management program forecasting exchange rates and measuring exposure to exchange risk available decision models for handling transaction and translation exposures are reviewed next a concluding section identifies gaps in the existing literature and suggests directions for future research