a time varying copula approach to oil and stock market dependence the case of transition economies abstract we employ the time varying copula approach to investigate the conditional dependence between the brent crude oil price and stock markets in the central and eastern european cee transition economies our results show evidence of a positive dependence between the oil and the stock markets of the six cee countries which is indicative of a contagion between those markets regardless of the changes in the oil price or the cee stock index moreover the dependence patterns in both the center and left tails of the return distributions change over time particularly during the heart of the financial crisis and are best described by the survival gumbel copulas the empirical evidence also suggests that the lower tail dependence is much stronger than that of the upper tail highlighting the importance of contagion during severe contractionary business cycles among the sample markets poland is shown to be particularly sensitive in this regard while hungary and slovenia are the least sensitive

measuring contagion between energy market and stock market during financial crisis a copula approach abstract in this paper we apply time varying copulas to investigate whether a contagion effect existed between energy and stock markets during the recent financial crisis using the wti oil spot price the s p500 index the shanghai stock market composite index and the shenzhen stock market component index returns evidence was found for a significantly increasing dependence between crude oil and stock markets after the failure of lehman brothers thus supporting the existence of contagion in the sense of forbes and rigobon s 2002 definition moreover increased tail dependence and symmetry characterize all the paired markets this indicates that significant increases in tail dependence are an actual dimension of the contagion phenomenon and that crude oil and stock prices are linked to the same degree regardless of whether markets are booming or crashing during the sample period finally the contagion effect is found to be much weaker for china than the us the empirical results have potentially important implications for risk management

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

optimal bundling of technological products with network externality for many high tech and internet related products utility to consumers depends in part on the size of the user base a phenomenon called network externality a firm with a portfolio of these and other products that are often asymmetric in their degree of network externality or marginal cost may have to look beyond the traditional strategies of pure components pure bundling and mixed bundling one such strategic alternative in a two product case would be a so called mixed bundling 1 under which the bundle and product 1 are offered but the other product can only be purchased in a bundled form the purpose of this study is to compare and contrast the impact of such asymmetry or symmetry in direct network externality and cost on the choice of bundling strategies we model a monopolist firm that has a product in each of two categories and faces heterogeneous consumers results suggest that pure bundling is more profitable when both products have low marginal costs or high network externality whereas pure components or mixed bundling 1 is more profitable when the products diverge in their costs and network externality e g only one product has network externality traditional mixed bundling is optimal in other instances

connections to distant knowledge interpersonal ties between more and less developed countries less developed countries benefit from being connected to technologically and economically advanced countries the well documented mechanisms for this cross national flow of knowledge all involve interfirm connections such as trade foreign direct investment fdi and alliances we examine the potential of a different mechanism interpersonal ties abroad that has only recently become practicable owing to advances in communication and transportation technologies globalization and increased migration we investigate when business knowledge obtained from interpersonal ties in more developed countries is more useful than locally sourced knowledge using a sample of south african managers we find that knowledge from more developed countries is not always more useful rather overseas knowledge is preferable when novel and accessible that is when new to the industry knowledge is needed when there is already a strong tie and when the knowledge does not involve a long discussion conversely local knowledge is preferable when new to the industry knowledge is not needed when the interpersonal tie is a weak tie and when a longer discussion is warranted this study demonstrates the value of connections between individuals in countries at different levels of development as sources of useful knowledge and suggests that international business research will benefit from exploring further the networks of individuals in addition to those of firms

social ties and international entrepreneurship opportunities and constraints affecting firm internationalization international entrepreneurship involves the identification and exploitation of opportunities for international exchange yet little is known about the entrepreneurial methods used for opportunity recognition while previous work emphasizes effects operating at the level of the business network i propose that the recognition of exchange opportunities is a highly subjective process shaped by entrepreneurs existing ties with others based on interview data collected from 41 managers i develop a comprehensive measure for classifying different methods of opportunity recognition i then use this measure to classify 665 international exchange ventures set up by entrepreneurs in four chinese cities in contrast with past research i find virtually no role for blind luck although the majority of exchange opportunities were discovered rather than sought these discoveries were intentional rather than accidental i also find that entrepreneurs idiosyncratic connections with others both promote and inhibit international exchange tie based opportunities lead to higher quality and more valuable exchanges that are constrained in terms of geographic psychic and linguistic distance from this i conclude that entrepreneurial networks have distinct opportunity horizons that limit the reach of tie based exchanges and potentially lead to sub optimal internationalization trajectories

exact likelihood computation for nonlinear dsge models with heteroskedastic innovations abstract phenomena such as the great moderation have increased the attention of macroeconomists towards models where shock processes are not log normal this paper studies a class of discrete time rational expectations models where the variance of exogenous innovations is subject to stochastic regime shifts we first show that up to a second order approximation using perturbation methods regime switching in the variances has an impact only on the intercept coefficients of the decision rules we then demonstrate how to derive the exact model likelihood for the second order approximation of the solution when there are as many shocks as observable variables we illustrate the applicability of the proposed solution and estimation methods in the case of a small dsge model

economic geography and the location of tncs financial and professional service fdi to the usa this paper attempts to examine theoretically and empirically the explanatory power of concepts drawn from economic geography for the explanation of the location of tncs it combines concepts from economic geography and international business theories in a model that seeks to explain the location of transnational corporations tncs and tests the model on financial and professional service fdi to the us the findings suggest a need to extend the conventional location model of international business by acknowledging the processes taking place among firms located in geographic proximity

exports of manufactures by developing countries emerging patterns of trade and location developing countries are rapidly increasing their shares of manufactured trade not just in labour intensive products but also in capital and skill intensive ones their shares are rising particularly rapidly in the high technology area however manufactured exports remain highly concentrated in the developing world with a few countries dominating all forms of export within the successful exporting countries there are significant differences in the technology content of exports these trends are difficult to explain with received trade theory even taking human capital into account or with reference to broad economic policies it is useful to bring in learning along with scale economies increasing returns and agglomeration as determinants of comparative advantage these factors imply market failures and so a role for policy in developing genuine comparative advantages this article suggests that emerging trade and location patterns in the developing work are explained by market imperfections and government policies to overcome them

concentration and dispersion in global industries remote electronic access and the location of economic activities we explore how the possibility of remote electronic access to markets resources and knowledge enabled by the new information and communication technologies icts might change the motivations of firms to locate activities internationally and in turn affect worldwide dispersion and concentration in an industry preliminary results from an exploratory analysis of the spatial distribution of firms in financial services suggest that the introduction of a business to business b2b trading network increases the global market participation of firms from peripheral countries but does not appear to reduce the importance of locational clusters a set of propositions is derived that provide guidance for more detailed research on the impact of icts on the strategy and structure of global industries

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

monopoly with incomplete information recent theoretical research on principal agent relationships has emphasized incentive problems that arise when the parties involved are constrained by either asymmetric information or their inability to monitor each other s actions here we concentrate on the former constraint and consider the case of a single principal the monopolist the main contribution is to show that under a separability assumption strong conclusions can be drawn about the nature of optimal incentive schemes although the primary focus is on optimal quantity discounts in a monopolized market the results also shed light on related topics such as optimal income taxation and commodity bundling

bundling strategies when products are vertically differentiated and capacities are limited we consider a seller who owns two capacity constrained resources and markets two products components corresponding to these resources as well as a bundle comprising the two components in an environment where all customers agree that one of the two components is of higher quality than the other and that the bundle is of the highest quality we derive the seller s optimal bundling strategy we demonstrate that the optimal solution depends on the absolute and relative availabilities of the two resources as well as upon the extent of subadditivity of the quality of the products the possible strategies that can arise as equilibrium behavior include a pure components strategy a partial or full spectrum mixed bundling strategy and a pure bundling strategy where the latter strategy is optimal when capacities are unconstrained these conclusions are contrary to findings in the prior literature on bundling that demonstrated the unambiguous dominance of the full spectrum mixed bundling strategy thus our work expands the frontier of bundling to an environment with vertically differentiated components and limited resources we also explore how the bundling strategies change as we introduce an element of horizontal differentiation wherein different types of customers value the available components differently

determinants of sovereign yield spreads in the eurozone a bayesian approach abstract we analyze the determinants of sovereign yields spreads of emu member states applying bayesian model averaging bma to annual panel data from 1999 to 2009 bma is well suited in cases of small samples and high model uncertainty this seems to be the case in modeling sovereign yield spreads in the eurozone since the literature reports heterogeneous results with respect to significant explanatory variables we are testing a number of variables reported to be significant in the literature and find that the most likely country specific drivers of yield spreads are fiscal variables such as budget balance and government debt as well as external sector variables such as terms of trade trade balance and openness global financing conditions indicated by the us interest rate and market sentiments indicated by corporate bond spreads are likely to influence sovereign yield spreads

has the cds market influenced the borrowing cost of european countries during the sovereign crisis this paper assesses the potential influence of the growing cds market on the borrowing cost of sovereign states during the european sovereign crisis we analyze the sovereign debt market to ascertain the pattern of information transmission between the cds and corresponding bond markets our methodological innovation is the use of a non linear specification rather than the linear vecm specification customarily employed using a panel smooth transition model during the 2008 2010 period we find that 1 linearity tests clearly reject the null hypothesis of a linear transmission mechanisms between the bond and the cds markets 2 market distress alters the mutual influence and 3 the higher the distress the more the cds market dominates the information transmission between cds and bond markets

when and where does foreign direct investment generate positive spillovers a meta analysis local firms may attract productivity spillovers from foreign investors yet these vary with local firms awareness capability and motivation to react to foreign entry in consequence spillovers vary across countries at different levels of economic development we apply competitive dynamics theory to analyze these contextual moderators of spillovers and test hypotheses thus derived in a meta analysis of the empirical literature on spillovers our analysis suggests a curvilinear relationship between spillovers and the host country s level of development in terms of income institutional framework and human capital

knowledge transfer in international acquisitions this paper reports on a multimethod study of knowledge transfer in international acquisitions using questionnaire data we show that the transfer of technological know how is facilitated by communication visits meetings and by time elapsed since acquisition while the transfer of patents is associated with the articulability of the knowledge the size of the acquired unit and the recency of the acquisition using case study data we show that the immediate post acquisition period is characterized by imposed one way transfers of knowledge from the acquirer to the acquired but over time this gives way to high quality reciprocal knowledge transfer

the copula garch model of conditional dependencies an international stock market application abstract modeling the dependency between stock market returns is a difficult task when returns follow a complicated dynamics when returns are non normal it is often simply impossible to specify the multivariate distribution relating two or more return series in this context we propose a new methodology based on copula functions which consists in estimating first the univariate distributions and then the joining distribution in such a context the dependency parameter can easily be rendered conditional and time varying we apply this methodology to the daily returns of four major stock markets our results suggest that conditional dependency depends on past realizations for european market pairs only for these markets dependency is found to be more widely affected when returns move in the same direction than when they move in opposite directions modeling the dynamics of the dependency parameter also suggests that dependency is higher and more persistent between european stock markets

emu and european government bond market integration in this study we adopt the capm based model of bekaert and harvey 1995 to compare the differences in the relative importance of two sources of systemic risk world and eurozone on government bond returns in two groups of countries in eu 15 results show that euro markets are less vulnerable to the influence of world risk factors and more vulnerable to emu risk factors however they are only partially integrated for their part the markets of the countries that decided to stay out of the monetary union present a higher vulnerability to external risk factors

do international acquisitions by emerging economy firms create shareholder value the case of indian firms while overseas acquisitions by emerging economy firms are gaining increased attention from the business press our understanding of whether and why this inorganic mode of international expansion creates value to acquirer firms is limited we argue that international acquisitions facilitate internalization of tangible and intangible resources that are both difficult to trade through market transactions and take time to develop internally thus constituting an important strategic lever of value creation for emerging economy firms furthermore the magnitude of value created will be higher when the target firms are located in advanced economic and institutional environments country markets that carry the promise of higher quality of resources and therefore stronger complementarity to the existing capabilities of emerging economy firms an event study of 425 cross border acquisitions by indian firms during 2000 2007 supports our predictions

bundling information goods of decreasing value consumers average value for information goods websites weather forecasts music and news declines with the number consumed this paper provides simple guidelines to optimal bundling marketing strategies in this case if consumers values do not decrease too quickly we show that bundling is approximately optimal if consumers values to subsequent goods decrease quickly we show by example that one should expect bundling to be suboptimal

customized bundle pricing for information goods a nonlinear mixed integer programming approach this paper proposes using nonlinear mixed integer programming to solve the customized bundle pricing problem in which consumers are allowed to choose up to n goods out of a larger pool of j goods prior work has suggested that this mechanism has attractive features for the pricing of information and other low marginal cost goods although closed form solutions exist for this problem for certain cases of consumer preferences many interesting scenarios cannot be easily handled without a numerical solution procedure in this paper we investigate the efficiency gains created by customized bundling over the alternatives of pure bundling or individual sale under different assumptions about customer preferences and firm cost structure as well as the potential loss of efficiency caused by pricing with incomplete information about consumer reservation values our analysis suggests that customized bundling enhances sellers profits and enhances welfare when consumers do not place positive values on all goods and that this consumer characteristic is much more important than the shape of the valuation distribution in determining the optimal pricing scheme we also find that customized bundling outperforms both pure bundling and individual sale in the presence of incomplete information and that customized bundling still outperforms other simpler pricing schemes even when exact consumer valuations are not known ex ante

optimal bundling and pricing under a monopoly contrasting complements and substitutes from independently valued products we develop an analytical model of contingent valuations and address two questions of import to a monopolist i should a given pair of complements or substitutes be sold separately pure components together pure bundling or both mixed bundling and at what prices ii how do optimal bundling and pricing strategies for complements and substitutes differ from those for independently valued products we find that the combination of marginal cost levels and the degree of complementarity or substitutability determines which of the three bundling strategies is optimal complements and substitutes should typically be priced higher than independently valued products

the silicon valley hsinchu connection technical communities and industrial upgrading silicon valley in california and the hsinchu taipei region of taiwan are among the most frequently cited miracles of industrialization in the information technology era since the region s transformation from an agricultural valley into the birthplace of the semiconductor industry in the 1950s silicon valley firms have pioneered a wide range of technology related industries the regional economy has adapted flexibly to fast changing markets and local producers continue to define the state of the art in successive generations of technology from semiconductor equipment personal and handheld computers and networking hardware and software to biotechnology multimedia software and internet related infrastructure and services taiwan s technology achievements are more recent but no less impressive the taipei area which served as a source of low cost labor for consumer electronics production as late as the 1970s is known today for the speed and flexibility of its personal computer manufacturers these firms dominate the markets for a large and growing range of computer rela ted products from motherboards and monitors to optical scanners and power supplies meanwhile the hsinchu science based industrial park established in 1980 is now a state of the art manufacturer of semiconductor s on par with the world market leaders in the us and japan taiwan s total information technology output is now greater than that of larger nations like korea in fact it is larger than the output of germany and france combined anderson 1998

mixed bundling of two independently valued goods this paper develops analytical results and insights for the mixed bundling problem of pricing a product line consisting of two component goods with valuations distributed uniformly and independently in 0 a1 and 0 a2 respectively with a1 a2 and a bundle of the two goods this setting has previously been considered analytically intractable by deriving component good prices as exact algebraic functions of the optimal bundle price i reduce the multiproduct pricing problem to a univariate nonlinear optimization problem in the bundle price when the two component goods are sufficiently asymmetric in valuations the optimal solution is partial mixed bundling one component good is not sold separately for which i derive exact conditions and optimal prices an exact analytical solution is also given for mixed bundling of two information goods component goods with zero marginal costs for the general case i derive a closed form approximation of the optimal bundle price pb 0 5724w1 0 5695w2

gaussian demand and commodity bundling in an important and widely cited essay adams and yellen 1976 examine the use of package selling as a price discrimination device they consider a monopolist producing two goods with constant unit costs and facing buyers with diverse tastes the marginal utility of a second unit of either good is assumed to be zero for all buyers the two goods are independent in demand for all buyers so that any buyer s reservation price for the first unit of either good is independent of the market price of the other thus the maximum amount any buyer would pay for a bundle consisting of one unit of each good is the sum of the two reservation prices and buyers are completely described by the values of those two prices 2 resale markets are assumed away in order to obtain comparative results for alternative pricing strategies the distribution of reservation prices in the adams yellen framework is assumed to be bivariate normal implications of gaussian demand are explored pure bundling is shown to operate by reducing buyer diversity thus facilitating the capture of consumers surplus it generally makes buyers worse off than unbundled sales it is more profitable if average reservation prices are high enough mixed bundling combines advantages of both pure bundling and unbundled sales and it is generally strictly more profitable than either bundling which treats goods symmetrically seems most attractive under symmetric reservation price distributions i am indebted to severin borenstein for superb research assistance to the ford motor company for research support through a grant to m i t and to the harvard economics department for housing me as a visiting scholar while most of this research was performed of course only i can be held responsible for this essay s shortcomings 1 the first clear recognition of this possibility seems to have been by stigler 1968 but also see burstein 1960 2 paroush and peles 1981 relax the assumption that consumers purchase at most one unit of each good but they consider only two types of buyers both with linear demand functions they retain the assumption that demands are independent for all buyers telser 1979 and phillips 1981 use different frameworks to analyze bundling policies spence 1980 explores the relation between bundling across commodities as here and bundling multiple units of the same

optimal bundling strategies under heavy tailed valuations we develop a framework for the optimal bundling problem of a multiproduct monopolist who provides goods to consumers with private valuations that are random draws from a distribution with heavy tails we show that in the vickrey auction setting the buyers prefer separate provision of the goods to any bundles we also provide a complete characterization of the optimal bundling strategies for a monopolist producer who provides goods for profit maximizing prices for products with low marginal costs the seller s optimal strategy is to provide goods separately when consumers valuations are heavy tailed and in a single bundle when valuations are thin tailed these conclusions are reversed for goods with high marginal costs for simplicity we use a specific class of independent and identically distributed random variables but our results can be generalized to include dependence skewness and the case of nonidentical one dimensional distributions

transforming disadvantages into advantages developing country mnes in the least developed countries we analyze the advantages and disadvantages of developing country multinational enterprises mnes in comparison with developed country mnes developing country mnes tend to be less competitive than their developed country counterparts partly because they suffer the disadvantage of operating in home countries with underdeveloped institutions we argue that this disadvantage can become an advantage when both types of mne operate in countries with difficult governance conditions because developing country mnes are used to operating in such conditions the empirical analysis shows that although developing country mnes rarely appear among the largest mnes in the world they are more prevalent among the largest foreign firms in the least developed countries ldcs especially in ldcs with poorer regulatory quality and lower control of corruption

to bundle or not to bundle commodity bundling is studied in an environment where the dispersion of valuations unambiguously decreases when two or more goods are sold as a bundle only bundling is more likely to dominate separately selling the goods if marginal costs are low relative to the average valuation or if the distribution of valuations is very peaked around the mean

a macro financial analysis of the euro area sovereign bond market abstract we estimate the fundamental component of euro area sovereign bond yield spreads i e the part of bond spreads that can be justified by country specific economic factors euro area economic fundamentals and international influences the yield spread decomposition is achieved using a multi market no arbitrage affine term structure model with a unique pricing kernel more specifically we use the canonical representation proposed by joslin et al 2011 and introduce next to standard spanned factors a set of unspanned macro factors as in joslin et al forthcoming the model is applied to yield curve data from belgium france germany italy and spain over the period 2005 2013 overall our results show that economic fundamentals are the dominant drivers behind sovereign bond spreads nevertheless shocks unrelated to the fundamental component of the spread have played an important role in the dynamics of bond spreads since the intensification of the sovereign debt crisis in the summer of 2011

optimal product bundling with dependent valuations the price of independence abstract in this paper we investigate the tactical problem of pricing a bundle of products when the underlying valuations of the bundle components are dependent we use copula theory to model the joint density of reservation prices and provide analytical derivations for the prices under different bundling strategies and sharp bounds for the profit function we discover that when only the bundle is offered and the marginal costs are relatively small the seller is better off by bundling products that have a negative association between their valuations while the converse is true when the marginal costs are relatively high we also show that the net benefit of offering a full product line containing both the bundle and the components decreases for mild to strong associations between the component valuations compared to offering just the bundle finally we analyze how the typical literature assumption of independence of reservation prices impacts the seller s profitability when in fact the valuations are dependent and find that this gap in profitability which we call the price of independence can be arbitrarily large

multiproduct nonlinear pricing typically work on mechanism design has assumed that all private information can be captured in a single scalar variable this paper explores one way in which this assumption can be relaxed in the context of the multiproduct nonlinear pricing problem it is shown that the firm will choose to exclude some low value consumers from all markets a class of cases that allow explicit solution is derived by making use of a multivariate form of integration by parts in such cases the optimal tariff is cost based

dynamic and targeted bundle pricing of two independently valued products abstract bundling is when two or more products are offered as a single unit and at a price lower than the sum of the individual prices of the products we study a multi segment market in which a retailer aims to clear the inventory of an item by bundling it with a second product which is independently valued we investigate the question of how dynamic and segment specific bundle pricing impacts retailer s revenue we develop a revenue model that integrates the dynamic and segment specific aspects of the pricing decisions and present a computational study to analyze their revenue impact relative to a price promotion for the individual item only the computational results indicate that the bundle offers are most effective when the initial inventory of the item under consideration is high the results also demonstrate that dynamic pricing is beneficial when the initial inventory of the item is low an additional revenue improvement is observed when the price of the bundle is dynamically optimized in the computational study segment specific pricing is observed to have no direct impact on revenue when prices are static segment specific and dynamic pricing however can bring about substantial revenue improvements that are an increasing function of the initial inventory level of the item we consider the correlation in consumers valuations of the bundled products and show that dynamically priced and segment specific bundle offers yield a robust revenue performance mitigating the potentially revenue diminishing impact of positive correlation in consumers valuations of the products

the european sovereign debt crisis the origin and propagation of the european sovereign debt crisis can be attributed to the flawed original design of the euro in particular there was an incomplete understanding of the fragility of a monetary union under crisis conditions especially in the absence of banking union and other european level buffer mechanisms moreover the inherent messiness involved in proposing and implementing incremental multicountry crisis management responses on the fly has been an important destabilizing factor throughout the crisis after diagnosing the situation we consider reforms that might improve the resilience of the euro area to future fiscal shocks

sovereign bond yield spreads a time varying coefficient approach abstract we study the determinants of sovereign bond yield spreads across 10 emu countries between q1 1999 and q1 2010 we apply a semiparametric time varying coefficient model to identify to what extent an observed change in the yield spread is due to a shift in macroeconomic fundamentals or due to altering risk pricing we find that at the beginning of emu the government debt level and the general investors risk aversion had a significant impact on interest differentials in the subsequent years however financial markets paid less attention to the fiscal position of a country and the safe haven status of germany diminished in importance by the end of 2006 two years before the fall of lehman brothers financial markets began to grant germany safe haven status again one year later when financial turmoil began the market reaction to fiscal loosening increased considerably the altering in risk pricing over time period confirms the need of time varying coefficient models in this context

network composition collaborative ties and upgrading in emerging market firms lessons from the argentine autoparts sector what types of relational and institutional mechanisms shape knowledge flows and the upgrading capabilities of emerging market firms in the face of economic liberalization we analyze the argentine autoparts sector to distinguish the relative impact of different types of network relationships on a firm s process and product upgrading a few social ties to international assemblers appear to be most beneficial for local suppliers although they may be insufficient to compensate fully for the negative effect of being located in a lower tier supplier customer relationships that are part of regular disciplined discussions for product and process improvements appear to be especially beneficial for upgrading

sovereign bond market dependencies and crisis transmission around the eurozone debt crisis a dynamic copula approach abstractwe examine the dependency between the european government bond markets around the recent sovereign debt crisis a dynamic copula approach is used to model the time varying dependence struct

crisis and risk dependencies abstract the knowledge of the multivariate stochastic dependence between the returns of asset classes is of importance for many finance applications such as asset allocation or risk management by means of goodness of fit tests we analyze for a multitude of portfolios consisting of different asset classes whether the stochastic dependence between the portfolios constituents can be adequately described by multivariate versions of some standard parametric copula functions furthermore we test whether the stochastic dependence between the returns of different asset classes has changed during the recent financial crisis the main findings are first whether a specific copula assumption can be rejected or not crucially depends on the asset class and the time period considered second different goodness of fit tests for copulas can yield very different results and these differences can vary for different asset classes and for different tested copulas third even when using various goodness of fit tests for copulas it is not always possible to differentiate between various copula assumptions fourth during the financial crisis copula assumptions are more frequently rejected however the results also raise some concerns over the suitability of goodness of fit tests for copulas as a diagnostic tool for identifying stressed risk dependencies

bundling with customer self selection a simple approach to bundling low marginal cost goods with declining costs of distributing digital products comes renewed interest in strategies for pricing goods with low marginal costs in this paper we evaluate customized bundling a pricing strategy that gives consumers the right to choose up to a quantity m of goods drawn from a larger pool of n different goods for a fixed price we show that the complex mixed bundle problem can be reduced to the customized bundle problem under some commonly used assumptions we also show that for a monopoly seller of low marginal cost goods this strategy outperforms individual selling m 1 and pure bundling m n when goods have a positive marginal cost or when customers have heterogeneous preferences over goods comparative statics results also show that the optimal bundle size for customized bundling decreases in both heterogeneity of consumer preferences over different goods and marginal costs of production we further explore how the customized bundle solution is affected by factors such as the nature of distribution functions in which valuations are drawn the correlations of values across goods and the complementarity or substitutability among products altogether our results suggest that customized bundling has a number of advantages both in theory and practice over other bundling strategies in many relevant settings

multiproduct monopoly commodity bundling and correlation of values through what selling strategy can a multiproduct monopolist maximize his profits when his knowledge about individual consumers preferences is limited one possibility extensively studied in the context of a single good monopoly is to use quantity dependent pricing as a means of discriminating among customers with differing tastes see for example oi 1971 and maskin and riley 1984 an alternative technique for price discrimination first suggested by stigler 1968 and analyzed further by adams and yellen 1976 is for the monopolist to package two or more products in bundles rather than selling them separately through a series of examples adams and yellen illustrate that bundling can serve as a useful price discrimination device even when all consumers willingnesses to pay for each of the goods individually are unaffected by whether they are also consuming the other product a typical example is illustrated in figure i adapted from figure iv in adams and yellen where there are two goods three consumers ab c who consume at most one unit of each good with reservation values for each good that are independent of whether the other good is consumed and zero costs of production there a bundle offered at a price of 100 fully extracts all potential surplus which would be impossible pricing the goods independently unfortunately though these authors do not provide any general characterization of the circumstances in which bundling is actually a multiproduct monopolist s optimal strategy their examples however such as figure i create the impression that the profitable use of bundling

eurozone sovereign contagion evidence from the cds market 2005 2010 abstract this paper analyses the dynamics of the credit default swap cds market of piigs france germany and the uk for the period of 2005 2010 the study is performed on the basis of the datastream and dtcc data on cds spreads and the bis data on cross border exposures the analysis of the data shows that sovereign risk mainly concentrates in the eu countries the ewma correlation analysis and the granger causality test demonstrate that there was contagion effect since correlations and cross county interdependencies increased already after august 2007 furthermore the irf analysis shows that among piigs the cds markets of spain and ireland have the biggest impact on the european cds market whereas the cds market of the uk does not cause a big distress in the eurozone the adjusted correlation analysis confirms that greece and other piigs even spain and italy have lower capacity to trigger contagion than core eu countries besides portugal is the most vulnerable country in the sample whereas the uk is the most immune to shocks

a revisit to the dependence structure between the stock and foreign exchange markets a dependence switching copula approach abstract this paper develops a dependence switching copula model to examine dependence and tail dependence for four different market statuses namely rising stocks appreciating currency falling stocks depreciating currency rising stocks depreciating currency and falling stocks appreciating currency the model is then applied to daily stock returns and exchange rate changes for six major industrial countries over the 1990 2010 period the dependence and tail dependence among the above four market statuses are asymmetric for most countries in the negative correlation regime but symmetric in the positive correlation regime these results enrich the findings in the existing literature and suggest that analyzing cross market linkages within a time invariant copula framework may not be appropriate

gauging potential sovereign risk contagion in europe abstract this study adopts the covar methodology to analyse the tail risk relationships among european sovereigns which provide arguably important information for policymakers to identify countries that should come under close scrutiny during the current debt crisis

from the editors student samples in international business research the jibs statement of editorial policy states that empirical submissions utilizing undergraduate student samples are usually discouraged wording is important here usually does not imply always this statement suggests that while student samples are appropriate in principle undergraduate ones are not except in unusual situations the purpose of this from the editors column is to discuss the pros and cons of student samples in international business ib research are student samples appropriate for developing and testing ib theories when are student samples appropriate and when are they not appropriate is there a difference between undergraduate and graduate samples what are the best practices this editorial is intended to provide ib researchers with guidelines as to when student samples and which types of student samples are appropriate in ib research

the multinational enterprise as a source of international knowledge flows direct evidence from italy this paper examines the determinants of technology transfer between parent firms and their international affiliates and of knowledge spillovers from those affiliates to host country firms using a unique data set of foreign multinational enterprise mne affiliates based in italy we find that affiliate investment in r d and investment in capital embodied technology plays a significant role in determining the nature of intra firm technology flows however the basis for any spillovers arising from mne affiliates does not originate from codified knowledge associated with r d but rather from the productivity of the affiliate

understanding global flows of venture capital human networks as the carrier wave of globalization industry participants and observers view venture capital as fundamentally a local business however recent data show an increasing share of us venture capital investments flowing overseas we suggest that cross border venture capital flows are associated with the formation of transnational technical communities ttcs groups of immigrants active in both home and host country technical networks our results highlight the role of human networks as a mechanism of industry globalization and support the view that ttcs are emerging economic actors in their own right