authority without credibility competition and conflict between ecolabels in tuna fisheries certification is widely seen as an innovative strategy for dealing with environmental problems in supply chains as the number of labels available in the fisheries sector has increased each with its own framing of sustainability questions are being asked about their credibility in tuna fisheries contrasting approaches have led to conflict over among other things the credibility of competing labels this paper investigates one such conflict between the dolphin safe and the marine stewardship council certification schemes in the west and central pacific it looks at how key practices like scientific rigour inclusiveness transparency openness impartiality independence and impact contribute to label credibility and explains the importance of authority in understanding how certification schemes maintain influence within global production networks the results demonstrate that despite substantially different levels of credibility within these networks the application of an environmental standard is more connected to the authority of the standard setter than the credibility of the label the paper concludes that understanding the more nuanced role of authority both with and without credibility offers new insights into the wider dynamics that shape environmental regulation in global production networks

the bond old bond spread abstract i document the profits on a trade that is long the old 30 year treasury bond and short the new 30 year treasury bond and is rolled over every auction cycle from june 1995 to november 1999 despite the systematic convergence of the spread over the auction cycle the average profits are close to zero the difference in repo market financing rates between the two bonds is a significant cost of carry in this trade i show that variation in the bond old bond spread is driven by the treasury supply of 30 year bonds as well as aggregate factors affecting investors preference for liquid assets

the economics of smallholder organic contract farming in tropical africa summary the paper examines the revenue effects of certified organic contract farming for smallholders and of adoption of organic agricultural farming methods in a tropical african context the comparison in both cases is with farming systems that are organic by default survey data from a large organic coffee contract farming scheme in uganda are reported and analyzed using a standard ols regression and a full information maximum likelihood fiml estimate of the heckman selection model the analysis finds that controlling for a range of factors there are positive revenue effects both from participation in the scheme and more modestly from applying organic farming techniques

making sense of the competitiveness debate the debate over national competitiveness is marked by some basic misperceptions with few exceptions those who use the term have a crude essentially mercantilist view of world trade in which competition among nations is just like competition between corporations not only do the authors and readers of reports on national competitiveness usually not understand comparative advantage they are unaware of the most basic adding up constraints economists however find it hard to believe that seemingly well informed people can really be this naive and assume that there must be more sophisticated ideas lying behind what they say the rationales offered by economists in turn offer false comfort to the would be sophisticates who like the term competitiveness they believe that they have transcended conventional economic theory when the fact is that they have failed to comprehend it in short the actual level of discussion is lower than any of the participants imagines copyright 1996 by oxford university press

upgrading in global value chains lessons from latin american clusters it has been shown that clustering helps local enterprises in industrial districts overcome growth constraints and compete in distant markets in advanced and less developed countries nevertheless recent contributions have stressed that more attention needs to be paid to external linkages and to the role played by global buyers to foster upgrading at cluster levels in this study we contribute to this debate focusing on the analysis of the relationships existing between clustering global value chains upgrading and sectoral patterns of innovation in latin america we find that sectoral specificities matter and influence the mode and the extent of upgrading in clusters integrated in global value chains

imperfect competition information heterogeneity and financial contagion this study examines how heterogeneity of private information may induce financial contagion using a model of multi asset trading in which the three main channels of contagion through financial linkages in the literature correlated information correlated liquidity and portfolio rebalancing are ruled out by construction i show that financial contagion can still be an equilibrium outcome when speculators receive heterogeneous fundamental information risk neutral speculators trade strategically across many assets to mask their information advantage about one asset asymmetric sharing of information among them prevents rational market makers from learning about their individual signals and trades with sufficient accuracy incorrect cross inference about terminal payoffs and contagion ensue when used to analyze the transmission of shocks across countries my model suggests that the process of generation and disclosure of information in emerging markets may explain their vulnerability to financial contagion jel d82 g14 g15

exporting manufactures human resources natural resources and trade policy whether a country s exports consist mainly of manufactures or mainly of primary products depends fundamentally on the skills of its labour force relative to the extent of its natural resources this proposition derived from a modified version of heckscher ohlin theory is supported by a strong cross country correlation between the manufactured primary export ratio and the skill land ratio cross country variation in trade policies is now only a minor cause of variation in the manufactured primary export ratio

the private sector in agricultural research systems will it fill the gap abstract this article examines whether the private sector can fill the gap of declining public research in developing countries economic theory suggests private for profit research will focus on areas where returns to research are appropriable and reasonable profits are generated actual private for profit research activities concentrate on countries and industries with large markets appropriable returns strong science infrastructure and favorable government policies governments and donors can promote private research by easing constraints to private entry and operations but if governments stop funding research on public goods and technologies with limited market potential the private sector is unlikely to fill the gap completely

price discovery in the u s treasury market the impact of orderflow and liquidity on the yield curve we examine the role of price discovery in the u s treasury market through the empirical relationship between orderflow liquidity and the yield curve we find that orderflow imbalances excess buying or selling pressure can account for as much as 26 percent of the day to day variation in yields on days without major macroeconomic announcements the effect of orderflow on yields is permanent and strongest when liquidity is low all of the evidence points toward an important role of price discovery in understanding the behavior of the yield curve

sources procedures and microeconomic effects of innovation fabio arcangeli paul david frank engelman christopher freeman massimo moggi richard nelson luigi orsenigo nathan rosenberg michele salvati g n von tunzelman two anonymous referees and the participants at the meeting of the committee on distribution growth and technical progress of the italian national research council cnr rome november 16 1985 have helped with various redraftings a particularly grateful acknowledgment is for the insightful and patient help of moses abramovitz this work has been undertaken at the science policy research unit spru university of sussex as part of the research program of the designated research centre sponsored by the economic and social research council esrc earlier support to the research that led to this paper by the italian national research council cnr is also gratefully acknowledged the statistical research has been undertaken with the assistance of stephano brioschi ilaria fornari and giovannu prennushi

collective learning in global diffusion spreading quality standards in a developing country cluster this research analyzes how foreign organizational practices diffuse among indigenous enterprises in a developing economy it highlights the collective knowledge building process as central for understanding diffusion based on a longitudinal case study of a cluster of dairy producers in nicaragua a representative low income country it looks at cross border diffusion in conditions that differ significantly from advanced economies the current literature that highlights institutional pressures driving global spread of practices has limits for capturing a significant dynamic caused by increased integration of markets and production by focusing on production organization and practices in a late developing context this paper explains the intertwined process of spreading new standards and changing existing local practices by elaborating the relationship among building collective capabilities learning and standards diffusion this study enriches current views on institutional effects and adds to the practice based literature as well as to the work on developing economy firms in organizational research

technological regimes and schumpeterian patterns of innovation this paper proposes that the specific pattern of innovative activities in an industry can be explained as the outcome of different technological learning regimes a technological regime is defined by the particular combination of technological opportunities appropriability of innovations cumulativeness of technical advances and properties of the knowledge base building upon the distinction between schumpeter mark i and schumpeter mark ii industries this paper provides empirical estimates of the relationships between indicators of the schumpeterian patterns of innovation concentration of innovative activities stability in the hierarchy of innovators and importance of new innovators and indicators of the variables defining technological regimes

competitiveness indices and developing countries an economic evaluation of the global competitiveness report developing countries policy makers worry about national competitiveness and closely watch indices ranking international competitive performance this paper analyzes from a development economics perspective if competitiveness is a legitimate concern and if the leading indices deserve the attention they get it assesses the best known index the global competitiveness report of the world economic forum and finds deficiencies at several levels its definitions are too broad the approach biased and the methodology flawed many qualitative measures are vague redundant or wrong these weak theoretical and empirical foundations reduce the value of the indices for analytical or policy purposes

how are stock prices affected by the location of trade abstract we examine pairs of large siamese twin companies whose stocks are traded around the world but have different trading and ownership habitats twins pool their cash flows so with integrated markets twin stocks should move together however the difference between the prices of twin stocks appears to be correlated with the markets on which they are traded most i e a twin s relative price rises when the market on which it is traded relatively intensively rises we examine several explanations of this phenomenon including the discretionary use of dividend income by parent companies differences in parent expenditures voting rights currency fluctuations ex dividend date timing issues and tax induced investor heterogeneity only the last hypothesis can explain some but not all of the empirical facts we conjecture that a country specific sentiment shocks might affect share intensity b investors are rational but markets are segmented by frictions other than international transactions costs such as agency problems

globalisation and unequalisation what can be learned from value chain analysis although many have gained from the process of globalisation there remains a stubbornly large number of people living in absolute poverty and a rise in inequality within and between countries the issue is thus not whether to participate in the global economy but how to do so in a manner which provides for sustainable and equitable income growth this study shows how value chain analysis can be used to chart the growing disjuncture between global economic activity and global income distribution and to provide causal explanations for this outcome in so doing value chain analysis provides valuable insights into policy formulation and implementation

which way is up in upgrading trajectories of change in the value chain for south african wine summary global value chain gvc analysis uses the concept of upgrading to highlight paths for developing country firms to move up the value chain usually through the lenses of four categories product process functional and inter sectoral upgrading the implicit normative expectation is that these firms move toward producing higher value added products and or take on more sophisticated functions along a value chain in this article upgrading is approached more broadly as reaching a better deal including a balance between rewards and risk the case study of south african wine shows that better product quality improved processes and some functional upgrading have co existed with processes of downgrading higher risks and limited rewards especially in traditional export markets a reflection on further conceptual development and directions for empirical research is also provided

a search based theory of the on the run phenomenon we propose a model in which assets with identical cash flows can trade at different prices infinitely lived agents can establish long positions in a search spot market or short positions by first borrowing an asset in a search repo market we show that short sellers can endogenously concentrate in one asset because of search externalities and the constraint that they must deliver the asset they borrowed that asset enjoys greater liquidity a higher lending fee specialness and trades at a premium consistent with no arbitrage we derive closed form solutions for small frictions and provide a calibration generating realistic on the run premia

enforcing higher labor standards within developing country value chains consequences for mnes and informal actors in a dual economy the 2013 collapse of the rana plaza building in dhaka bangladesh led external stakeholders to insist on higher labor standards in apparel global value chains gvcs stakeholders now expect mnes to take full chain responsibility however the increased monitoring and enforcement costs of a large network of suppliers have been non trivial mnes instead implement a cascading compliance approach coupled with a partial re internalization elevated costs are further exacerbated in developing countries where the informal and formal sectors are linked and cost competitiveness greatly depends on this duality monitoring actors in the informal sector is difficult and few informal actors can achieve compliance gvcs have therefore reduced informal sector engagement by excluding non compliant actors and investing in greater automation by seeking to strictly enforce compliance mnes are attenuating some of the positive effects of mne investment particularly the prospects for employment creation especially among women and enterprise growth in the informal sector i discuss how these observations might inform other cross disciplinary work in development ethics and sociology finally i note implications for ib theory from the disparities between the ownership control and responsibility boundaries of the firm

market manipulation price bubbles and a model of the u s treasury securities auction market this paper models the u s treasury securities auction market and demonstrates that mar ket manipulation can occur in a rational equilibrium it is a dynamic model with traders participating in a when issued market a treasury auction and a resale market manipu lations occur when dealers in the when issued market use their knowledge of the net order flow in order to corner the auction and squeeze the shorts from the when issued market this manipulation equilibrium generates bubbles in treasury security prices and specials in repo rates we also compare discriminatory and uniform price auction rules with respect to manipulation our analysis shows that manipulations can occur in long run equilibrium under discriminatory price auctions but not under uniform price auctions

imperfect competition in a multi security market with risk neutrality the central purpose of this paper is to develop a model of insider trading i e trading based on private information in the context of an imperfectly competitive multi security market with risk neutral agents imperfect competition allows us to consider strategic behavior and a multi security market lets us study the effect of a correlated environment on equilibrium we employ the informational assumption that market makers can observe all order flows and so portfolio diversification arises in this model for strategic reasons given correlated fundamentals market makers can potentially learn about every security from each order flow this causes even a risk neutral trader who does not face short selling restrictions to refrain from determining the demand for each security independently this contrasts with traditional multi asset models which focus on the incentive to reduce portfolio variance or the effect of short selling restrictions or budget constraints under imperfect competition correlation has two effects one ceteris paribus it allows the uninformed to learn from additional variables since each order flow could potentially have information about all payoffs on the other hand it creates an incentive for informed traders to restrict what others can learn from public information thus our analysis can be viewed as an application to the multi security heterogeneous information model in admati 1985 of the imperfectly competitive equilibrium concept which kyle 1985 first applied to the single security homogeneous information model of grossman and stiglitz 1980 our principal results include an explicit characterization of a linear equilibrium as a function of three general covariance matrices associated with payoffs noise trading and errors in private signals under general covariance structures we show that there always exists an equilibrium in which the relationship between the vector of prices and the vector of order flows is governed by a symmetric positive definite matrix the plan of the paper is as follows in section 2 we introduce our model we derive the equilibrium in section 3 and section 4 comments on the properties of the equilibrium the proofs of the results are in the appendix

grid integration of intermittent renewable energy sources using price responsive plug in electric vehicles abstract plug in electric vehicles pevs are expected to balance the fluctuation of renewable energy sources res to investigate the contribution of pevs the availability of mobile battery storage and the control mechanism for load management are crucial this study therefore combined the following a stochastic model to determine mobility behavior an optimization model to minimize vehicle charging costs and an agent based electricity market equilibrium model to estimate variable electricity prices the variable electricity prices are calculated based on marginal generation costs hence because of the merit order effect the electricity prices provide incentives to consume electricity when the supply of renewable generation is high depending on the price signals and mobility behavior pevs calculate a cost minimizing charging schedule and therefore balance the fluctuation of res the analysis shows that it is possible to limit the peak load using the applied control mechanism the contribution of pevs to improving the integration of intermittent renewable power generation into the grid depends on the characteristic of the res generation profile for the german 2030 scenario used here the negative residual load was reduced by 15 22 and the additional consumption of negative residual load was between 34 and 52

data revisions are not well behaved we document the empirical properties of revisions to major macroeconomic variables in the united states our findings suggest that they do not satisfy simple desirable statistical properties in particular we find that these revisions do not have a zero mean which indicates that the initial announcements by statistical agencies are biased we also find that the revisions are quite large compared to the original variables and they are predictable using the information set at the time of the initial announcement which means that the initial announcements of statistical agencies are not rational forecasts

sectoral patterns of technical change towards a taxonomy and a theory abstract the purpose of the paper is to describe and explain sectoral patterns of technical change as revealed by data on about 2000 significant innovations in britain since 1945 most technological knowledge turns out not to be information that is generally applicable and easily reproducible but specific to firms and applications cumulative in development and varied amongst sectors in source and direction innovating firms principally in electronics and chemicals are relatively big and they develop innovations over a wide range of specific product groups within their principal sector but relatively few outside firms principally in mechanical and instrument engineering are relatively small and specialised and they exist in symbiosis with large firms in scale intensive sectors like metal manufacture and vehicles who make a significant contribution to their own process technology in textile firms on the other hand most process innovations come from suppliers these characteristics and variations can be classified in a three part taxonomy based on firms 1 supplier dominated 2 production intensive 3 science based they can be explained by sources of technology requirements of users and possibilities for appropriation this explanation has implications for our understanding of the sources and directions of technical change firms diversification behaviour the dynamic relationship between technology and industrial structure and the formation of technological skills and advantages at the level of the firm the region and the country

fx trading and exchange rate dynamics i examine the sources of exchange rate dynamics by focusing on the information structure of fx trading this structure permits the existence of an equilibrium distribution of transaction prices at a point in time i develop and estimate a model of the price distribution using data from the deutsche mark dollar market that prroduces two striking results 1 much of the short term volatility in exchange rates comes from sampling the heterogeneous trading decisions of dealers in a distribution that under normal market conditions changes comparatively slowly 2 public news is rarely the predominant source of exchange rate movements over any horizon copyright the american finance association 2002

special repo rates this article provides the causes and symptoms of special repo rates in a competitive market for repurchase agreements a repo rate is in effect an interest rate on loans collateralized by a specific instrument a special is a repo rate significantly below prevailing market riskless interest rates this article shows that specials can occur when those owning the collateral are inhibited whether from legal or institutional requirements or from frictional costs from supplying collateral into repurchase agreements specialness increases the equilibrium price for the underlying instrument by the present value of savings in borrowing costs associated with the repo specials this article characterizes competitive repurchase or repo markets and the equilibrium relationship between repo rates and the underlying cash market prices repurchase markets are often called financing markets since they are effectively vehicles for collateralized borrowing that are often used to finance the purchase of the underlying collateral this article provides causes and effects of specials meaning specific repo rates significantly below prevailing market interest rates for loans of similar maturity and credit risk the example of united states treasury instruments is emphasized because of the extensive use of the treasury repo market as a means of hedging against or speculating on changes in u s interest rates and because of the high incidence of specials in treasury repo rates numerous specific instru

liquidity maturity and the yields on u s treasury securities the efrect8 of aaaet liquidity on expected retuma for ts with infinite maturities toc ka are eumined for bonda treuury notes and bills with matched maturities of lellll than 6 months the yield to maturity ill higher on notes which have lower liquidity the yield di1ferential between notes and billa is a decreuing and convex function of the time to maturity the results provide a robult confirmation of the liquidity effect in auet pricing this paper studies empirically the effects of the liquidity of capital assets on their prices amihud and mendelson 1986 1989 proposed that liquidity affects asset prices because investors require a compensation for bearing transaction costs transaction costs paid whenever the asset is traded form a sequence of cash outflows the discounted value of this cost stream proxies for the value 1088 due to illiquidity which lowers the asset s value for any given cash flow that the asset generates 1 as a result the return on assets should be an increasing function of their illiquidity other things equal for stocks the illiquidity effect is expected to be strong because their transaction cost sequence is infinite amihud and mendelson 1986 1989 demonstrated that common stocks with lower liquidity yielded significantly higher average returns after controlling for risk and for other factors these results on the importance of liquidity in the pricing of stocks raise additional questions i does the liquidity effect depend on the specific controls used by amihud and mendelson 1986 1989 1 ii does illiquidity have a similarly strong effect on the pricing of bonds whose maturities are finite and iii if liquidity affects bond yields how is this effect related to the bond s time to maturity

shifting proximities the maritime ports sector in an era of global supply chains hall p v and jacobs w shifting proximities the maritime ports sector in an era of global supply chains regional studies economic geographers argue that spatial and non spatial dimensions of proximity are central to innovation and collective action the various dimensions of proximity in relation to maritime ports are examined global supply chains represent a shift in organizational and cognitive proximities between seaports and among port users in the process extra local relationships have become even more influential in maritime port development as organizational proximity between dominant port users has increased through vertical and horizontal integration territorially based institutional and social proximities especially as regards stable and shared regulatory systems are increasingly important as a counterbalance to ensure openness to innovation and upgrading hall p v et jacobs w des proximites en pleine evolution les ports maritimes en periode de chaines d approvisionnement mondial

deutsche mark dollar volatility intraday activity patterns macroeconomic announcements and longer run dependencies this paper provides a detailed characterization of the volatility in the deutsche mark dollar foreign exchange market using an annual sample of five minute returns the approach captures the intraday activity patterns the macroeconomic announcements and the volatility persistence arch known from daily returns the different features are separately quantified and shown to account for a substantial fraction of return variability both at the intraday and daily level the implications of the results for the interpretation of the fundamental driving forces behind the volatility process is also discussed the efficient market hypothesis contends that financial asset prices provide rational assessments of fundamental values and future payoffs by implication price changes should reflect the arrival and processing of all relevant new information however the proportion of return variability that can be ascribed to public news announcements is low for example cutler poterba and summers 1989 find that even the largest daily price changes in the stock market generally cannot be associated with any significant economic news 1 moreover proxies for the flow of public information e g the number of news items released by reuter s news service berry and hiowe 1994 or dow jones company mitchell and mulherin 1994 explain little of the overall variation thus if private information is ruled out proponents of rational price formation have to assert the existence of important news items

governance of global value chains in response to food safety and certification standards the case of shrimp from vietnam summary we use global value chain gvc theory to understand governance of vietnam s shrimp farming industry we describe this gvc as buyer driven with important food safety standards imposed by governments of importing countries and new certification systems promoted by nongovernmental organizations ngos governance relations are clear between governments in importing countries and vietnam and between importers and ngos governance relations become more fragmented further down the chain where large numbers of small scale producers and traders operate this fragmentation may adversely affect access to the most lucrative markets and have the unanticipated effect of marginalizing small scale farmers and traders

cooperation between rivals informal know how trading it has long been recognized that it is difficult for an innovating firm to fully appropriate the benefits arising from its innovations and that desired research might therefore not be performed nelson 1959 pp 297 306 one sometimes possible solution to this dilemma is cooperative r d conducted by firms who share the costs and benefits of particular r d projects johnson 1973

subcontracting in italian industry labour division firm growth and the north south divide giunta a nifo a et scalera d subcontracting in italian industry labour division firm growth and the north south divide regional studies the aim of this paper is to investigate the impact of subcontracting on italian manufacturing firms growth in the second half of the 1990s the main results are 1 producing as subcontractors does not penalize firms but can be a positive determinant of growth especially when coupled with the propensity to innovate 2 since a non linear relationship between growth and subcontracting emerges an organizational mode not fully specialized in either subcontracting activity or direct sales may be optimal and 3 the deep dualism of the italian industrial structure is confirmed as southern subcontractors show poorer performances and slower growth giunta a nifo a and scalera d 90 1 2 3

government intervention and strategic trading in the u s treasury market we study the impact of permanent open market operations pomos by the federal reserve on u s treasury market liquidity using a parsimonious model of speculative trading we conjecture that i this form of government intervention improves market liquidity contrary to conclusions drawn by existing literature and ii the extent of this improvement depends on the market s information environment evidence from a novel sample of federal reserve pomos during the 2000s indicates that bid ask spreads of on the run treasury securities decline when pomos are executed by an amount increasing in proxies for information heterogeneity among speculators fundamental volatility and pomo policy uncertainty consistent with our model

y2k options and the liquidity premium in treasury markets financial institutions around the world expected the millennium date change y2k to cause an aggregate liquidity shortage responding to the concern the federal reserve bank of new york auctioned y2k options to primary dealers the options gave the dealers the right to borrow from the fed at a predetermined interest rate using the implied volatilities of y2k options and the on off the run spread we demonstrate that the fed s action eased the fears of bond dealers contributing to a drop in the liquidity premium of treasury securities our analysis shows the link between the microstructure of government debt markets and the central bank s provision of liquidity we argue that y2k options and their effects on liquidity premium broadly conform to the economic theory on public provision of private liquidity

application of fuzzy q learning for electricity market modeling by considering renewable power penetration abstract by increasing renewable resource penetration the need for developing fast and reliable market modeling approaches in the presence of these resources has gained greater attention in this paper fuzzy q learning approach is proposed for hour ahead electricity market modeling in presence of renewable resources the proposed approach is implemented on ieee 30 bus test system the effectiveness of the proposed approach is evaluated and compared with q learning approach for both normal and stressful cases simulation results indicate that the proposed approach is able to model electricity market for a range of continuous multidimensional renewable power penetration in considerably less iterations compared with q learning approach moreover the probability of finding nash equilibrium is becoming higher by using fuzzy q learning approach while the other indices such as average social welfare average of locational marginal prices lmps and average standard of deviation of lmps do not change considerably

automation versus intermediation evidence from treasuries going off the run this paper examines the choice of trading venue by dealers in u s treasury securities to determine when services provided by human intermediaries are difficult to replicate in fully automated trading systems when treasury securities go off the run their trading volume drops by more than 90 this decline in trading volume allows us to test whether intermediaries knowledge of the market and its participants can uncover hidden liquidity and facilitate better matching of customer orders in less active markets consistent with this hypothesis the market share of electronic intermediaries falls from 81 to 12 when securities go off the run electronic trading systems have been steadily increasing their share of securities trading in almost all financial markets as the amount of automation in financial markets increases it is natural to ask what services human intermediaries provide that are difficult or impossible to replicate in a fully automated trading system existing theory suggests that human intermediaries play at least two important functions first an intermediary s knowledge of the market and its participants may uncover hidden liquidity that facilitates quicker and more efficient matching of customer orders grossman 1992 the value of this matching function is greater when trading volume is low and matches are difficult to find second when information asymmetry is high the repeated interaction between an intermediary and its customers allows the intermediary to protect itself against informed trades and offer better prices to its customers seppi 1990 these two factors explain for example why electronic communications networks ecns have a greater market share for the largest and most actively traded nasdaq stocks while nasdaq market makers have a larger share in smaller less liquid stocks characterized by greater information asymmetry barclay hendershott and mccormick 2003 and why nyse specialists have higher participation rates in smaller less liquid stocks madhavan and sofianos 1998

governance and trade in fresh vegetables the impact of uk supermarkets on the african horticulture industry production of fresh vegetables for export has grown rapidly in a number of countries in sub saharan africa over the last decade this trade brings producers and exporters based in africa together with importers and retailers in europe large retailers in europe play a decisive role in structuring the production and processing of fresh vegetables exported from africa the requirements they specify for cost quality delivery product variety innovation food safety and quality systems help top determine what types of producers and processors are able to gain access to the fresh vegetables chain and the activities they must carry out the control over the fresh vegetables trade exercised by uk supermarkets has clear consequences for inclusion and exclusion of producers and exporters of differing types and for the long term prospects for the fresh vegetables industry in the two major exporting countries studied kenya and zimbabwe

expectations and risk premia at 8 30 a m deciphering the responses of bond yields to macroeconomic announcements what explains the sharp movements of the yield curve upon the release of major u s macroeconomic announcements to answer this question we estimate an arbitrage free dynamic term structure model

collective efficiency growth path for small scale industry this study is concerned with the growth of small local industry in developing countries and explores one particular route for understanding and fostering such growth it focuses on the clustering of firms and the competitive advantage which they derive from local external economies and joint action captured in the concept of collective efficiency following a conceptual discussion the article explores the economic and institutional conditions which enhance or hinder collective efficiency this includes a case study which suggests that responding to opportunity and crisis requires shifting from mere reliance on external economies to joint action and from ascribed to earned trust

the cost of short selling liquid securities standard models of liquidity argue that the higher price for a liquid security reflects the future benefits that long investors expect to receive we show that short sellers can also pay a net liquidity premium if their cost to borrow the security is higher than the price premium they collect from selling it we provide a model free decomposition of the price premium for liquid securities into the net premiums paid by both long investors and short sellers empirically we find that short sellers were responsible for a substantial fraction of the liquidity premium for on the run treasuries from november 1995 through july 2009

greener than thou the political economy of fish ecolabeling and its local manifestations in south africa summary developing country governments and industries have been reluctant to support ecolabels fearing their potentially protectionist effects this reluctance has been countered by international organizations such as fao and ecolabel initiatives with assurances of transparency non discrimination and technical assistance the analysis of the marine stewardship council msc label shows that developing country fisheries and small scale ones in particular have been marginalized furthermore the msc certification of the hake industry in south africa illustrates that ecolabeling is sought in the context of competitive pressures and specific political economies not simply on the basis of value free science and systemic management this article concludes that developing country producers need dedicated systems of standards and verification procedures not only special flexibilities

liquidity reconstitution and the value of u s treasury strips an apparent pricing anomaly exists in the market for u s treasury strips zerocoupon strips created from principal payments typically trade at significantly higher prices than otherwise identical zero coupon strips created from coupon payments in addition to documenting this phenomenon this study demonstrates that differences in liquidity and differences in reconstitution characteristics explain much of this price variation u s treasury strips are zero coupon bonds created from either the principal or individual coupons of u s treasury bonds if the maturity date and face value are identical the cash flows for a strip derived from a principal payment are identical to the cash flows for a strip derived from a coupon payment however the two instruments almost always trade at significantly different prices for a recent sample 5 31 91 the mean percentage difference in price is greater than 1 2 with some differences greater than 2 7 this is an apparent anomaly since securities with identical cash flows should trade at the same price although coupon strips and principal strips have identical cash flows at maturity closer inspection reveals two differences the two instruments have different degrees of liquidity and different reconstitution characteristics previous studies have documented the effect of liquidity on prices in other markets amihud and mendelson 1986 1989 find that common stocks with differences in liquidity have significantly different risk adjusted rates of return silber 1991 studies restricted stock offerings and documents substantial price discounts on these illiquid securities vis a vis identical stocks that trade in the open market 1 in a study of u s treasury bills and treasury bonds with remaining maturities of less than six months amihud and mendelson 1991 find that differences in liquidity contribute to differences in prices between matched pairs of bills and bonds of the same

universities in emerging economies bridging local industry with international science evidence from chile and south africa emerging economies are now becoming more central in global competition to achieve this many countries have invested to develop into knowledge economies universities have a role to play in this transformation both as generators of new knowledge as well as actors that can interact with the local industry and contribute to its innovativeness this paper explores using two case studies in the chilean and south african wine industry how universities connect international science to domestic industry it finds that this connection occurs through a few bridging researchers who display particular characteristics compared with their colleagues bridging researchers are more talented than average researchers both because they publish more in international journals and or because they have received awards for their academic work this finding may have significant policy implications as policies aimed at strengthening the skills of these researchers should be welcomed in catching up industries copyright the author 2012 published by oxford university press on behalf of the cambridge political economy society all rights reserved oxford university press

sustainability governance of chains and networks a review and future outlook this paper reviews the extent to which sustainability governance has been integrated into the literature on sustainable chains and networks the analysis brings together four main approaches to chains and network studies supply chain management scm global commodity chains gcc global value chains gvcs and global production networks gpns to examine how and the extent to which sustainability and sustainability governance are conceptualised and incorporated into their analytical frameworks the results point to a shift in this combined literature from conceptualising the formation of global chains and networks as sites of inequality under conditions of globalisation towards a renewed vision on the potential of chains as a site for social and environmental reform overall however we conclude that the literature on global chains and networks has not adequately conceptualised distinct modes of sustainability governance in response we offer an amended typology for identifying how firm and non firm actors govern sustainability in chains of chains and through chains in globalised commodity production and consumption the paper finishes with an exploration of the research frontiers challenges and continuing potential of chain and network studies to understand the governance of sustainability and a call for further academic debate on the kinds of integrated governance arrangements necessary for future sustainability reform through hybridised public private economic practice

the merit order effect a detailed analysis of the price effect of renewable electricity generation on spot market prices in germany the german feed in support of electricity generation from renewable energy sources has led to high growth rates of the supported technologies critics state that the costs for consumers are too high an important aspect to be considered in the discussion is the price effect created by renewable electricity generation this paper seeks to analyse the impact of privileged renewable electricity generation on the electricity market in germany the central aspect to be analysed is the impact of renewable electricity generation on spot market prices the results generated by an agent based simulation platform indicate that the financial volume of the price reduction is considerable in the short run this gives rise to a distributional effect which creates savings for the demand side by reducing generator profits in the case of the year 2006 the volume of the merit order effect exceeds the volume of the net support payments for renewable electricity generation which have to be paid by consumers

on the volatility and comovement of u s financial markets around macroeconomic news announcements the objective of this paper is to provide a deeper insight into the links between financial markets and the real economy to that end we study the short term anticipation and response of u s stock treasury and corporate bond markets to the first release of surprise u s macroeconomic information specifically we focus on the impact of these announcements not only on the level but also on the volatility and comovement of those assets returns we do so by estimating several extensions of the parsimonious multivariate garch dcc model of engle 2002 for the excess holding period returns on seven portfolios of these asset classes we find that both the process of price formation in each of those financial markets and their interaction appear to be driven by fundamentals yet our analysis reveals a statistically and economically significant dichotomy between the reaction of the stock and bond markets to the arrival of unexpected fundamental information we also show that the conditional mean volatility and comovement among stock treasury and corporate bond returns react asymmetrically to the information content of these surprise announcements overall the above results shed new light on the mechanismsbywhichnewinformationisincorporatedintopriceswithinandacrossu s financial markets

financial innovation and the role of derivative securities an empirical analysis of the treasury strips program the role that financial innovation plays in financial markets is very controversial to provide insight into this role we examine how market participants use the highly successful treasury strips program we find that investors use the option to create treasury derivative strips primarily to make markets more complete and take advantage of tax and accounting asymmetries although liquidity related factors help explain differences in the prices of treasury bonds and strips we find little evidence that the option to strip and reconstitute securities is used for speculative or arbitrage related purposes the role of financial innovation is a central issue for both policymakers and researchers in finance 1 critics argue that financial innovations often have no economic role beyond allowing some investors to take highly leveraged speculative or arbitrage related positions in contrast advocates argue that the introduction of new products makes financial markets more complete reduces frictions and transaction costs and leads to a more optimal allocation of risk in the economy to better understand the role played by financial innovation this paper examines how investors use the successful separate trading of registered interest and principal of securities strips program of the u s treasury this program allows investors to strip treasury notes and bonds to create separate discount bonds and to reconstitute previously stripped notes and

liquidity taxes and short term treasury yields this article investigates differences in yields on identical treasury notes and bills and shows that they reflect differences in liquidity immediacy risk and taxes it proposes an empirical measure for differences in the liquidity risk of notes and bills the volatility ofthe underlying rate times the ratio of bills turnover to notes turnover because differential taxes affect sellers but not buyers of bills and notes the results reject free of informational problems the hypothesis that the notes demand curve is horizontal note bill yield differences also decrease with inventories of notes the less liquid asset

bond returns liquidity and missing data this paper examines holding period returns to constant duration portfolios of u s govern ment notes and bonds and measures the return premium generated by liquidity differences in bonds the approach compares constant duration portfolios constructed in two distinct ways one using only bonds issued in the most recent treasury auction one using all other bonds comparisons of the resulting series are made meaningful by choosing narrow du ration ranges in the portfolio formation procedure this in turn induces a missing data problem in the created time series parameters of return distributions are therefore estimated employing a maximum likelihood framework that explicitly accounts for the missing data it is estimated that recently issued bonds are priced to return a premium of around 55 basis points per annum over otherwise equivalent instruments

the social performance and distributional consequences of contract farming an equilibrium analysis of the arachide de bouche program in senegal abstract this paper is an empirical analysis of the impact of a contract farming program in senegal we examine the access of poorer community members to contracts and the effect of the program on the income of participants the program performs very well on both counts participants and nonparticipants are indistinguishable by wealth measures and farmers increase their income substantially by participating in the program we attribute the former to the program s mobilization of local information through its use of village intermediaries permitting the substitution of social collateral for physical collateral and making the program more accessible to the poor

structural reforms and technological behaviour abstract the opening up to foreign competition the deregulation of a vast array of markets and the privatization of public sector firms have been inducing major changes in the structure and behaviour of the latin american economies the aim of this paper is to describe some of these changes and to identify the new patterns of firm behavior the new institutional environment and the new policy agenda gradually emerging in the region in the field of science and technology as a result of recent trade liberalization and market deregulation efforts

strategic trading in a dynamic noisy market this paper studies a dynamic model of a nancial market with a strategic trader in each period the strategic trader receives a privately observed endowment in the stock he trades with competitive market makers to share risk noise traders are present in the market after receiving a stock endowment the strategic trader is shown to reduce his risk exposure either by selling at a decreasing rate over time or by selling and then buying back some of the shares sold when the time between trades is small the strategic trader reveals the information regarding his endowment very quickly

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

the on the run liquidity phenomenon abstract we test the implications of a model of multi asset speculative trading in which liquidity differentials between on the run and off the run u s treasury bonds ensue from endowment shocks in the presence of two realistic market frictions information heterogeneity and imperfect competition among informed traders and a public signal our evidence suggests that i off on the run liquidity differentials are economically and statistically significant even after controlling for several of the bonds intrinsic characteristics such as duration convexity repo rates or term premiums and ii off on the run liquidity differentials are smaller immediately following bond auction dates and larger when the uncertainty surrounding the ensuing auction allocations is high when the dispersion of beliefs across informed traders is high and when macroeconomic announcements are noisy consistent with our model

the effect of pro environmental preferences on bond prices evidence from green bonds abstract we use green bonds as an instrument to identify the effect of non pecuniary motives specifically pro environmental preferences on bond market prices we perform a matching method followed by a two step regression procedure to estimate the yield differential between a green bond and a counterfactual conventional bond from july 2013 to december 2017 the results suggest a small negative premium the yield of a green bond is lower than that of a conventional bond on average the premium is 2 basis points for the entire sample and for euro and usd bonds separately we show that this negative premium is more pronounced for financial and low rated bonds the results emphasize the low impact of investors pro environmental preferences on bond prices which does not represent at this stage a disincentive for investors to support the expansion of the green bond market

the theory of the firm as governance structure from choice to contract the propositions that organization matters and that it is susceptible to analysis were long greeted by skepticism by economists one reason why this message took a long time to register is that it is much easier to say that organization matters than it is to show how and why the prevalence of the science of choice approach to economics has also been an obstacle as developed herein the lessons of organization theory for economics are both different and more consequential when examined through the lens of contract this paper examines economic organization from a science of contract perspective with special emphasis on the theory of the firm

comparison of private incentive mechanisms for improving sustainability of filipino tuna fisheries this paper analyzes the influence of three private incentive mechanisms over decision making related to improved sustainability of fishing practices in filipino tuna fisheries the three mechanisms compared are the world wildlife fund for nature s fishery improvement project model marine stewardship council certification and the international seafood sustainability foundation pro active vessel register the main question addressed in this paper is how and to what extent the private incentive mechanisms support the development of fisher capabilities to respond to the requirements set out by these mechanisms applying a global value chain approach to analyze results collected from key actors involved in philippine tuna fishers contributing to both domestic and regional economic development in the western pacific we explore the structure and function of these private incentive mechanisms in achieving both environmental and economic development outcomes our results show that these private incentive mechanisms deliver different direct and indirect incentives for changing to more sustainable fishing practices and that the success of these mechanisms is dependent on the extent to which the mechanisms support the development of target fisher capabilities to comply with their sustainability requirements we conclude that the future success of these incentive mechanisms depends for a large part on stricter sustainability requirements but also on the capacity of the mechanisms to incentivize the inclusion of more developing country fishers these findings contribute to a wider understanding of how the capabilities of developing country producers are influenced by their relationship with chain and non chain actors and with the wide institutional arrangements that the producers operate in

gatekeepers in regional networks of innovators the internal density of a local network is said to increase the regionspecific knowledge stock and might lead to a comparative advantage however it might also lead to a lock in situation if local trajectories are directed towards inferior solutions accordingly it is argued that successful clusters are characterised by the existence of gatekeepers i e actors that generate novelty by drawing on local and external knowledge we attempt to answer questions related to the role and characteristics of gatekeepers within regional innovation systems by applying social network analysis based on patent data for four east german regions the regional networks appear to be significantly dierent with respect to the overall degree of interaction and with respect to their relative outward orientation concerning the characteristics of gatekeepers we find that size does not play the major role for being a gatekeeper it is rather absorptive capacity that matters for gatekeepers it also shows that public research organisations serve the functions of a gatekeeper to a higher degree than private actors

an empirical analysis of stock and bond market liquidity this article explores cross market liquidity dynamics by estimating a vector autoregressive model for liquidity bid ask spread and depth returns volatility and order flow in the stock and treasury bond markets innovations to stock and bond market liquidity and volatility are significantly correlated implying that common factors drive liquidity and volatility in these markets volatility shocks are informative in predicting shifts in liquidity during crisis periods monetary expansions are associated with increased liquidity moreover money flows to government bond funds forecast bond market liquidity the results establish a link between macro liquidity or money flows and micro or transactions liquidity a number of important theorems in finance rely on the ability of investors to trade any amount of a security without affecting the price however there exist several frictions 1 such as trading costs short sale restrictions and circuit breakers that impact price formation the influence of market imperfections on security pricing has long been recognized liquidity in particular has attracted a lot of attention from traders regulators

review of grid tie micro generation systems without energy storage towards a new approach to sustainable hybrid energy systems linked to energy efficiency abstract this paper reviews the literature on the subject albeit approaching hybrid micro generation power systems from a systems thinking st and cybernetics standpoint viewing them as dynamically complex adaptive systems cas coupled with and supplying to a set of homes termed a sustainable block in a rural setting here homeostatic regulation hr and control play a vital role in reaching efficient equilibrium towards reconciling power supply and demand response management unlike most of the work reviewed in the literature the focus here is on supervisory control of grid connected micro generation systems without energy storage aiming towards building energy efficiency thriftiness and sustainability in energy consumption building on homeostatic control hc principles first introduced by f c schweppe in 1979 the paper explores the concepts of sustainability and sustainable hybrid energy systems shes applied to micro generation focusing on operational aspects rather than on socio economic environmental or regulatory ones a concrete theoretical model for building a shes is presented for a proposed grid connected renewable microgrid the model seeks to reconcile power supply and demand towards efficient equilibrium homeostasis proposing reward based criteria for controlling renewable electricity supply and consumption in rural communities in chile discussion and recommendations are also offered stating that energy sustainability es is essentially a systems issue and one where es is first and foremost a structural organizational and operational property which is in the very nature of the system itself it is built into it rather than explained by exogenous factors

collateral and short squeezing of liquidity in fixed rate tenders abstract the paper models fixed rate tenders where a central bank offers to lend central bank funds to financial institutions bidders are constrained by the amount of collateral they have we focus on the strategic interaction between bidding in the tender and trading in the interbank market after the tender where short squeezes could occur we examine how the design of the tender affects equilibrium bidding behavior and the incidence of short squeezes important elements in the analysis include the type of policy implemented by the central bank as well as bidders initial endowments of liquidity and collateral three instruments for softening short squeezes are identified the tender rate the tender size and admissible collateral increasing the tender rate or size tends to decrease the probability and severity of a short squeeze the possibility of a short squeeze may induce bidders to oversubscribe even if the tender rate is higher than the competitive rate

discriminatory versus uniform treasury auctions evidence from when issued transactions abstract we use when issued transactions data to assess the treasury s current experiment with uniform auctions when issued volume is higher under uniform as compared to discriminatory auctions suggesting a higher information release which should reduce pre auction uncertainty and the winner s curse under uniform auctions when issued volatility falls after the auction and again after the outcome announcement the pattern is the opposite for discriminatory auctions this is further evidence that uniform auctions increase pre auction information and lower the short squeeze a direct comparison of markups in uniform and discriminatory auctions yields mixed results

coping with the upheavals of globalization in the shea value chain the maintenance and relevance of upstream shea nut supply chain organization in western burkina faso summary market globalization has had only a weak impact on the regional shea nut supply chain in western burkina faso despite the boom in the shea trade and the arrival of leading foreign firms we show that despite the fact that wholesalers have kept the shea chain locked in an oligarchic organization for the last 50 years they still play an important role in the smooth functioning of the chain and in profit sharing down the chain to the rural poor we suggest that development actors should consider shea traders and their role in the coordination of the chain more carefully 2014 the authors published by elsevier ltd this is an open access article under the cc by nc sa license http creativecommons org licenses by nc sa 3 0

the impact of operating in multiple value chains for upgrading the case of the brazilian furniture and footwear industries summary exporting has been upheld as the golden standard for industrial upgrading however research using the value chain approach shows that upgrading for developing country firms is often limited to the lowest value added activities based on comparative research carried out in two brazilian clusters furniture and footwear industries this paper shows that domestic and regional value chains can offer greater upgrading opportunities providing space for activities of higher value added better remunerated and difficult to replicate notably design marketing and branding moreover this study highlights that many firms simultaneously serve multiple value chains multichain and that multichain firms have better upgrading prospects than those primarily exporting via global value chains

an inquiry into quasi credit contracts the role of reciprocal credit and interlinked deals in small scale fishing communities in agrarian village societies beset with many hazards and uncertainties people evolve various means of coping with risk what is perhaps less known is that credit transactions can sometimes serve the function of reducing risk in such societies this article is concerned with examining several insurance motivated credit arrangements in small scale fishing communities a hunger insurance mechanism of reciprocal credit and a system of interlinked contracts aimed at insuring against risks in the spheres of labour and marketing relations will be extensively dealt with moreover the concept of triadic relationships will be shown to have special relevance in the case of traditional insurance arrangements aiming at controlling problems of moral hazard

supply contraction and trading protocol an examination of recent changes in the u s treasury market we investigate liquidity and trader behavior in the u s treasury market during recent supply contractions as in the precontraction period dealers employ expandable order strategies to achieve greater than posted depth at the posted price and use expandable orders more often when expected information asymmetry is greater overall however dealers are less likely to discover greater than quoted depth during the supply contraction regimes we find that even after substantial losses in their market share of coupon treasury trading brokers reporting voice brokered trading through govpx provide an important protocol for depth discovery we investigate liquidity and trader behavior in the u s treasury market during recent supply contractions as in the precontraction period dealers employ expandable order strategies to achieve greater than posted depth at the posted price and use expandable orders more often when expected information asymmetry is greater overall however dealers are less likely to discover greater than quoted depth during the supply contraction regimes we find that even after substantial losses in their market share of coupon treasury trading brokers reporting voice brokered trading through govpx provide an important protocol for depth discovery

african enterprise clusters and industrialization theory and reality abstract using six case studies from africa this paper examines the theoretical argument that geographic and sectoral clustering enables enterprises to overcome constraints to growth and development findings were both theoretical and practical theoretically the study underscored the strength of the collective efficiency framework but found that certain anomalies could only be explained by other contextual variables grouping the six case studies revealed important differences among them and showed that each group plays its own part in the industrialization process groundwork clusters prepare the way industrializing clusters begin the process of specialization differentiation and technological development and complex industrial clusters produce competitively for wider markets the paper concludes with practical implications for african governments donors and the business community

multimarket trading and market liquidity when a security trades at multiple locations simultaneously an informed trader has several avenues in which to exploit his private information the greater the proportion of liquidity trading by large traders who can split their trades across markets the larger is the correlation between volume in different markets and the smaller is the informativeness of prices we show that one of the markets emerges as the dominant location for trading in that security when informed traders can use their information for more than one trading period the timely release of price information by market makers at one location adversely affects the profits informed traders expect to make subsequently at other locations market makers competing to offer the lowest cost of trading at their location consequently deter informed trading be voluntarily making the price information public and by cracking down on insider trading article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

quantifying value chain analysis in the context of livestock systems in developing countries the analysis of value chains has augmented our knowledge on the complexities inter linkages distributional benefits and institutional arrangements of production and marketing channels in developing countries however the analysis remains relatively qualitative and case specific with limited ability to rank or assess the impact of alternative interventions or to analyze sufficiently the complex market dynamics and feedbacks present in livestock systems this paper offers theoretical and applied insights on ways to improve the analytical rigor of the value chain methodology that combines both qualitative and quantitative approaches

news and noise in g 7 gdp announcements revisions to gdp announcements are known to be quite large in all g 7 countries quarterly growth rate revisions are regularly more than a full percentage point at an annualized rate we examine the predictability of these revisions using standard statistical tests of whether the preliminary announcement is a rational forecast of the subsequently revised data previous work suggests that u s gdp revisions are largely unpredictable as would be the case if the revisions reflect news not available at the time that the preliminary number is produced we find that the degree of predictability varies throughout the g 7 although we find little predictability in u s revisions the data revisions for several foreign countries are highly predictable we also perform a simple real time forecasting exercise showing that for several countries the predictability of data revision could be used to generate improved preliminary data

recovery of a mexican cluster devaluation bonanza or collective efficiency abstract mexico as many other developing countries in latin america and elsewhere has been moving in the 1980s toward a liberalized trade regime after a long period of import substitution this paper analyzes the impact of trade liberalization on the cooperative behavior of shoe firms located in a cluster in guadalajara the empirical evidence shows that cooperation has increased it also suggests that cooperation positively influences firms performance and together with a favorable market environment contributes to the cluster s recovery the study is based on fieldwork carried out in guadalajara in 1996 qualitative information was collected through in depth interviews and quantified responses came from a questionnaire survey covering a sample of 63 shoe manufacturing enterprises

underpricing in discriminatory and uniform price treasury auctions this paper compares the newer uniform price u s treasury auctions to the traditional discriminatory mechanism and examines the extent to which the auction mechanisms are responsible for underpricing empirically i find that even for the newer uniform price auctions the average price received by the treasury is less than the price of the same securities in the concurrent secondary market although this underpricing is reduced by half relative to the older mechanism from the summary statistics released by the treasury i calibrate common value auction models for the two mechanisms and predict the level of underpricing in each auction i find that the observed magnitude of underpricing in the auctions is consistent with the model s predictions

regional worlds from related variety in regional diversification to strategic coupling in global production networks this annual lecture paper bridges two influential but parallel literature strands on evolutionary economic geography eeg and global production networks gpn it argues that both strands are prem

quota induced discarding in heterogeneous fisheries abstract individual quota iq programs are a promising and increasingly common means of regulating fisheries this paper examines how profit maximizing fishers respond to different types of iq programs in fisheries where many types of fish are harvested simultaneously this analysis shows that the most common types of individual quota programs can induce discarding and that individual quota programs that regulate the value of harvests never induce discarding since discarded fish have a high mortality rate value based individual quota programs are superior to their more conventional counterparts in that they waste fewer fish the disadvantages of value based quotas are also examined results are driven by the fact that the harvest technology examined here does not satisfy a free disposal assumption since this free disposal assumption is ubiquitous in production theory and not obviously true the framework developed herein may be useful for analyzing a broad class of problems involving joint production

the economics of technical change this paper reviews the recent rapidly growing literature on technical change in the economy it concentrates on innovations and their diffusion at firm and industry level since this was the area designated as relatively weak in earlier literature surveys the review argues that the extensive empirical evidence and theoretical analysis now available presents a basic challenge to neoclassical theory after indicating some weaknesses in the neo schumpeterian literature the paper concludes by advocating an experiment with a new form of assessment by neighboring disciplines to economics itself which would take full account of the fundamental issues at stake in this modern methodenstreit c 1994 academic press inc copyright 1994 by oxford university press

a comparison of clustered and dispersed firms in the small scale clothing industry of lima abstract this study provides empirical evidence on the strength and type of clustering advantages contrasting the performance of small clustered firms with several control groups of dispersed producers in the garment industry of lima peru repeated measurement facilitates an evaluation of the ability of clustered firms to respond to pressures arising from the swift trade liberalization carried out in peru after 1990 the evidence suggests that clustering advantages have been significant particularly for the smallest firms cost reductions and information spillovers are the dominant type of advantages these are however passive advantages of clustering they largely arise at the level of transactions in goods and services and to a lesser extent in the transformation of inputs into output while significant these advantages are insufficient for sustaining competitiveness in the liberalized markets the garment cluster runs the risk of entropic death if information spillovers remain limited in origin and diversity and if interfirm cooperation does not cross local borders

learning from global buyers an increasing number of developing countries engage in contract manufacturing for a decreasing number of global buyers this constellation characterises many labour intensive export sectors the positioning of developing country enterprises in such buyer driven chains is central to research concerned with identifying the winners and losers from globalisation this study contributes to this debate by seeking answers to two questions first what can researchers learn from global buyers about the relative strengths and weaknesses of developing country producers second what can these producers learn from global buyers and what circumstances facilitate or constrain such learning