forest incomes and rural livelihoods in chiradzulu district malawi abstract this paper examines forest income among rural dwellers in one of malawi s most densely populated districts chiradzulu 160 households were interviewed in two sites only 20 km apart purposely selected on the basis of access to a forest reserve people are extremely poor with 97 having incomes of less than 1 usd day forest income constitutes around 15 of total income only non farm income 47 and agriculture 28 rank higher the poorest segment depends more on forest income than the least poor group but the medium income group exhibits the highest dependence fuelwood constitutes the major source of such income followed by fodder the incomes mainly support current consumption people with better access to the forest reserve have higher total income forest income and relative forest income as revealed through a gini coefficient analysis forest resources have an important income equalizing effect across rural households a particular group of resource poor farmers 8 1 of sample with little access to agricultural land and a high representation of female heads derives an average of 65 of their income from the forest an important policy lesson is that restricting people s access to forest resources can have substantial effects on household livelihoods and welfare and would serve to increase income inequalities in the area livelihood researchers should now recognize the substantial income from forest resources

an examination of the antecedents and implications of patent scope this paper focuses on the concept of patent scope and contributes to existing research in three ways first it offers a re examination of the construct and identifies two dimensions of patent scope 1 the number of variations of the core inventive idea identified in the patent reflected in the number of claims in the patent e g merges and nelson 1994 and 2 the positioning of those variations in the inventive space which is reflected in the number of technological classes in which patent examiners classify those claims second it investigates the implications of patent scope for the firm s subsequent inventive performance and finds that when the scope of a patents spans across a higher number of technological classes the extent to which the inventing firm itself succeeds in building on the knowledge underlying its own patent is lower third it investigates the antecedents of scope and suggests that prior investment in scientific knowledge and in related inventive experience are two factors that affect the scope of the patents that firms develop the theoretical predictions elaborated in this paper are supported by an empirical examination of a longitudinal sample of firms in the photonics industry

towards an attention based view of the firm the central argument is that firm behavior is the result of how firms channel and distribute the attention of their decision makers what decision makers do depends on what issues and answers they focus their attention on what issues and answers they focus on depends on the specific situation and on how the firm s rules resources and relationships distribute various issues answers and decision makers into specific communications and procedures the paper develops these theoretical principles into a model of firm behavior and presents its implications for explaining firm behavior and adaptation 1997 by john wiley sons ltd

general technological capabilities product market fragmentation and markets for technology abstract the combination of a firm capability i e ability to generate general purpose technologies and a market structure condition i e fragmentation of downstream submarkets may encourage licensing in an industry that is the probability of licensing should increase when product markets are fragmented and technologies support general purposes evidence consistent with these predictions emerges from a 1993 to 2001 panel of 87 firms that owned at least one u s software security patent between 1976 and 2001 the analysis uncovers some fundamental characteristics of how external knowledge exploitation functions in particular technology markets thrive when product markets are fragmented and firms have the capability to produce general technologies

global and domestic utilization of industrial relevant science patent citation analysis of science technology interactions and knowledge flows abstract the development of science based technologies may draw heavily on codified and tacit outputs from both domestic research bases and foreign sources having a view of the scientific underpinnings of these technical innovations and related knowledge diffusion and utilization processes especially those concerning public financed basic research is of major importance to policymakers nowadays some of those scientific and technical inputs are pivotal to technical inventions and are acknowledged as such by explicit references citations to related research papers in the reference list on the corresponding patents this case study deals with citations to dutch authored research papers on uspto patents granted during the period 1987 1996 results of the citation analysis reveal several important features of contributions made by the dutch science base to dutch invented and or foreign invented patents such as 1 a marked overall increase of patent citations to dutch research papers and 2 significant differences between domestic and foreign citation patterns where 3 domestic citation links are dominated by author inventor self citations and patents originating from the large r d intensive multinational firms such as philips these findings provide new empirical evidence that patent citation analysis produces systemic quantitative data providing strategic background information regarding nation specific and sector specific factors in domestic and cross border science technology linkages and knowledge flows

the changing technology of technological change general and abstract knowledge and the division of innovative labour abstract in the past most innovations have resulted from empiricist procedures the outcome of each trial yielding knowledge that could not be readily extended to other contexts while trial and error may remain the primary engine of innovation developments in many scientific disciplines along with progress in computational capabilities and instrumentation are encouraging a new approach to industrial research instead of relying purely on trial and error the attempt is also to understand the principles governing the behaviour of objects and structures the result is that relevant information whatever its source can now be cast in frameworks and categories that are more universal the greater universality makes it possible for the innovation process to be organised in new ways firms can specialise and focus upon producing new knowledge and the locus of innovation may be spread across both users and producers more generally the use of general and abstract knowledge in innovation opens up the possibility for a division of labour in inventive activity the division of innovative labour the implications for public policy especially that on intellectual property rights are discussed

economic insights from internet auctions this paper surveys recent studies of internet auctions four main areas of research are summarized first we survey several studies that document and attempt to explain the frequently observed sniping or last second bidding behavior in these auctions second we summarize several methods proposed to quantify the distortions caused by asymmetric information in these markets most notably due to the winner s curse third we explore research about the role of reputation mechanisms installed to help combat these distortions finally we discuss what internet auctions have to teach us about auction design

the role of natural capital in sustaining livelihoods in remote mountainous regions the case of upper svaneti republic of georgia in the greater caucasus of the republic of georgia proponents of a new ski tourism zone and long term timber concessions claim that new wage opportunities will benefit households these developments will also limit access to common pool resources cprs this study uses the sustainable livelihoods framework to identify the conditions under which a development strategy will improve livelihood outcomes in the region analysis of original household survey data in depth interviews and field observation reveals that households depend on cprs for a range of market and non market benefits low income households depend on cprs for up to 60 of their total income ols regression estimates show that households in villages farthest from market centers have a higher income dependence on cprs and are more likely to participate in forest use activities a majority of households report that there are few available substitutes to improve livelihood outcomes a development strategy should secure access to market benefits from cprs or wage income must increase in proportion to lost cpr income and affordable substitutes must be provided access to non substitutable components of cprs must be secured and the distribution of changes in access to natural capital and new wage opportunities must be accounted for

auctions an introduction abstract this is a detailed introduction to auction theory it begins with a simple analysis of standard auctions and then uses a strikingly simple general solution of symmetric private values auctions to prove the payoff equivalence of many auction rules the basic framework is then modified to admit risk aversion multi unit and repeated auctions as well as collusion then follows an introduction to optimal auctions with and without stochastic entry and to common value auctions and the winner s curse problem the survey closes with a sample of applications from the regulation of natural monopolies to price competition in oligopoly and the government securities market

inequality as a cause of environmental degradation abstract this paper advances two hypotheses first the extent of an environmentally degrading economic activity is a function of the balance of power between the winners who derive net benefits from the activity and the losers who bear net costs second greater inequalities of power and wealth lead all else equal to more environmental degradation

bayesian inference in structural second price common value auctions structural econometric auction models with explicit game theoretic modeling of bidding strategies have been quite a challenge from a methodological perspective especially within the common value framework we develop a bayesian analysis of the hierarchical gaussian common value model with stochastic entry introduced by bajari and hortacsu a key component of our approach is an accurate and easily interpretable analytical approximation of the equilibrium bid function resulting in a fast and numerically stable evaluation of the likelihood function we extend the analysis to situations with positive valuations using a hierarchical gamma model we use a bayesian variable selection algorithm that simultaneously samples the posterior distribution of the model parameters and does inference on the choice of covariates the methodology is applied to simulated data and to a newly collected dataset from ebay with bids and covariates from 1000 coin auctions we demonstrate that the bayesian algorithm is very effici

fortune favors the prepared firm a critical factor in industrial competitiveness is the ability of firms to exploit new technological developments we term this ability a firm s absorptive capacity and argue that such a capability not only enables a firm to exploit new extramural knowledge but to predict more accurately the nature of future technological advances we develop a stylized model in which we focus exclusively on firms decisions to invest in their absorptive capacities we first examine a monopolist s investment decision analyzing the path dependence of its investment and the effect of uncertainty we then consider the effect of competition by modeling the impact of entry on an incumbent s investment behavior implications for management and public policy are then discussed

appropriability and commercialization evidence from mit inventions the effects of appropriability on invention have been well studied but there has been little analysis of the effect of appropriability on the commercialization of existing inventions exploiting a database of 805 attempts by private firms to commercialize inventions licensed from the massachusetts institute of technology mit between 1980 and 1996 we explore the influence of several appropriability mechanisms on the commercialization and termination of projects to develop products based on university inventions our central hypothesis is that the relationship between a licensee s decision to either terminate or commercialize the invention is driven by the current market value of the invention as well as the option value of delaying its commercialization we use a competing risks framework that allows for nonparametric heterogeneity and correlated risks we find that better appropriability in the sense of more effective patent strength and secrecy has a strong negative effect on the hazard of license termination the effectiveness of learning has a strong positive effect on the hazard of technology commercialization while lead time has a negative effect

why do firms do basic research with their own money abstractthe question to be addressed is why do private firms perform basic research with their own money interest in this question derives from both analytical and utilitarian considerations there is empirical evidence in the united states which provides the main context for this paper supporting the view that basic research makes a significant contribution to the productivity growth of the economy 4 7 it is widely held that social returns from basic research are significant and higher than private returns and it is for this reason that most such activities continue to be financed by the taxpayer this also implies that measures aimed at increasing basic research by the private sector will be welfare improving in the united states the federal government in the years since the second world war has provided the vast majority of all funds devoted to basic research although the federal share has been declining in recent years and although that share is at its lowest level in about 20 years it still constitutes about two thirds of the total 10 this abstract was borrowed from another version of this item

look before you leap market opportunity identification in emerging technology firms entrepreneurs play a fundamental role in bringing new technologies to market because technologies are often configurable to serve a variety of different markets it is possible for entrepreneurs to identify multiple market opportunities prior to the first market entry of their emerging firms and if they elect to do so to therefore have a choice of which market to enter first the empirical results presented in this paper offer three new insights regarding this important early stage choice in new firm creation first they reveal that serial entrepreneurs have learned through prior start up experience to generate a choice set of alternative market opportunities before deciding which one to pursue in their new firm creation second the analysis indicates that entrepreneurs who identify a choice set of market opportunities prior to first entry derive performance benefits by doing so third the positive relationship between the number of market opportunities identified prior to first entry and new firm performance is nonlinear and subject to decreasing marginal return the research literature has yet to acknowledge the notion of multiple opportunity identification prior to entry and the related idea of selecting the most favorable market opportunity for the creation of a new technology firm

on limiting or encouraging rivalry in technical progress the effect of patent scope decisions abstract this essay is on the effects of the scope of a patent e g how broad its allowed claims on subsequent inventing in a field it is argued that this depends on the topography of technical advance in a field in particular on how inventions are linked to each other and in the extent to which rapid technical advance requires a diversity of actors and minds as contrasted with being facilitated by express coordination of inventive activity technical advance is examined in several different fields with a focus on how patents influenced the pace and quality of development the authors conclude that allowing and enforcing broad patent claims tends to hinder technical progress

auctioning and bargaining an econometric study of timber auctions with secret reservation prices this article considers a first price sealed bid auction at which the seller s reservation price is not announced in advance we allow for a second round of bargaining and consider the nash bargaining outcome when the object is unsold after the auctioning round we characterize the bidders and seller s bayesian nash equilibrium strategies the distributions of the buyers and seller s private values are estimated by nonlinear least squares from auction data on standing timber while solving numerically the differential equations characterizing the seller s and buyers equilibrium strategies the performance of the estimated model is then compared to a model in which the players behave myopically

a penny for your quotes patent citations and the value of innovations the use ofpatents in economic research has been seriously hindered by the fact that patents vary enormously in their importance or value and hence simple patent counts cannot be informative about innovative output the purpose of this article is to put forward patent counts weighted by citations as indicators of the value of innovations thereby overcoming the limitations of simple counts the empirical analysis of a particular innovation computed tomography scanners indeed shows a close association between citation based patent indices and independent measures of the social value of innovations in that field moreover the weighting scheme appears to be nonlinear increasing in the number of citations implying that the informational content of citations rises at the margin as in previous studies simple patent counts are found to be highly correlated with contemporaneous rd however here the association is within afield over time rather than cross sectional

economic analysis and the quest for competitive advantage curred in the past decade between applied microeconomists and those who study business strategy business strategists have cast up a series of questions for industrial economists who have responded with numerous applications of economic theory and quantitative research methods this interchange has been fruitful and indeed more fruit remains for the picking i shall argue for centering the collaborative effort on what may be called committed competition rivalrous moves among incumbent producers that involve resource commitments that are irrevocable for nontrivial periods of time most concerns of business strategy are with policy choices that

how broad should the scope of patent protection be i explore the trade off between a patent s length that is its lifetime and its width that is its scope of coverage a wider patent generally reduces the distortion of consumers choices between the patented brand of the product and unpatented lower priced varieties sold by competitors but also permits higher prices which increase relative to profits the deadweight losses from consumers switching consumption out of the product class i show under what conditions infinitely lived but very narrowly focused patents are the socially efficient way to reward innovation and under what conditions very short lived but very broad patents are optimal

technological pre adaptation speciation and emergence of new technologies how corning invented and developed fiber optics this article investigates how established firms innovate and even initiate new technological trajectories we build on and expand the notion of technological speciation to describe how a new technology emerges when a firm leverages its technological knowledge into a new application domain current research on technological speciation does not investigate how firms accumulate the technological knowledge which they eventually redeploy into different domains nor does it clarify the precise role of luck historical accidents and foresight strategy in shaping the overall process this requires a finer grained investigation of the microprocesses and evolutionary forces underlying the dynamics of technological speciation to this end we use a longitudinal case study of corning s invention and development of fiber optics technology we focus less on testing theory and more on describing a phenomenon to generate new theoretical insight

contracting for tacit knowledge the provision of technical services in technology licensing contracts abstract recent research on the economic payoff from new technology has emphasized the importance of tacit knowledge or know how this paper shows that arm s length contract can overcome the problems in contracting for know how by bundling complementary inputs with know how in a technology package and leveraging the superior enforceability of contracts over the latter in the empirical part of this paper the relationship between bundling and transfer of know how is analyzed using indian data the results imply that tied sales of inputs may increase the efficiency of contracts involving the transfer of know how a striking result in the context of the current north south debates on intellectual property rights is the packaging of patents with know how

some evidence on the winner s curse comment the theory of auctions has developed extensively since robert b wilson s 1977 seminal paper due to the complexity of equilibrium strategies however empirical researchers have been slow to incorporate and test the most basic theoretical precepts typical empirical studies estimate ad hoc bidding models with no attempt to ascertain whether the implied behaviors are theoretically plausible the recent paper by stuart e thiel 1988 attempts to bridge this gap thiel obtains closed form equilibrium bidding functions that are theoretically motivated and linear in parameters and which facilitate empirical estimation and testing if widely applicable thiel s empirical approach would constitute a major methodological breakthrough unfortunately thiel s approach applies only in special cases that are of limited practical interest linear bidding strategies emerge only under circumstances that are unlikely in the real world the limited range of thiel s approach may not be apparent to casual readers of his paper even when linear strategies do exist they are not unique under the special assumptions of thiel s model for each nash equilibrium in linear strategies there exists a related family of nonlinear strategies thus further justification must be found for basing empirical research on the linear specification we also note a significant error in thiel s work the symmetric strategies he derives on the basis of order statistics do not constitute a nash equilibrium we derive proper expressions for the symmetric nash strategies and discuss a specification error in thiel s regression analysis that would account for the mixed results obtained in his application to the highway construction industry

anomalies the winner s curse abstract next time that you find yourself a little short of cash for lunch try the following experiment in your class take a jar and fill it with coins noting the total value of the coins now a

patent quality and research productivity measuring innovation with multiple indicators we analyse the determinants of the decline in research productivity using panel data on manufacturing firms in the us for the period 1980 93 we focus on three factors the level of demand the quality of patents and technological exhaustion we develop an index of patent quality using detailed patent information and show that using multiple indicators substantially reduces the measured variance in quality research productivity at the firm level is inversely related to patent quality and the level of demand as predicted by theory and patent quality is positively associated with the stock market value of firms

the winner s curse reserve prices and endogenous entry empirical insights from ebay auctions internet auctions have recently gained widespread popularity and are one of the most successful forms of electronic commerce we examine a unique data set of ebay coin auctions to explore the determinants of bidder and seller behavior we begin by documenting a number of empirical regularities in our data set of ebay auctions next we specify and estimate a structural econometric model of bidding on ebay using our parameter estimates from this model we measure the extent of the winner s curse and simulate seller revenue under different reserve prices