sequential labor decisions under uncertainty an estimable household model of west african farmers this paper reports estimates of the structural parameters of a stochastic control model that describcs the labor decisions of small farmers in burkina faso west africa the focus of the estimation is on measuring flexibility in production and intertemporal substitutability in consumption full information maximum likelihood estimates of the primitive parameters of the model are computed even though optimal labor decision rules cannot be derived analytically vuong s non nested model specification test shows that this method yields parameter estimates that are superior to those derived by assuming that farmers solve a deterministic control problem the low levels of agricultural labor effort commonly observed in the survey area are shown to be a consequence both of the low productivity of labor in archaic rainfed agriculture and of farmers awareness that in the absence of a labor market overly ambitious production plans lead to seasonal manpower constraints to meet rainfed farmers concerns agricultural research institutes and extension services should factor flexibility into their research agendas

the role of local nonfarm activities and migration in reducing poverty evidence from ethiopia kenya and uganda by using cross sectional data from ethiopia kenya and uganda this article estimates the determinants of the participation in local nonfarm activities and migration at the individual level and then estimates the determinants of farm and nonfarm income the results indicate that schooling and local language ability increase participation in local nonfarm activities and migration schooling also is found to increase nonfarm income at the household level but not farm income we also find that farm household members from low potential agricultural areas are more likely to participate in local nonfarm activities and migration than those from high potential agricultural areas thus the results suggest that local nonfarm activities and migration offer employment opportunities for workers from low potential agricultural areas indeed the nonfarm activities and migration is likely to provide an important pathway to reduce poverty in low potential agricultural areas in east africa

the stochastic convergence of co2 emissions a long memory approach in response to equity concerns surrounding the spatial distribution of co2 emissions and assumptions of co2 convergence within some climate models this paper examines the convergence of co2 emissions within the oecd over the period 1870 2004 more specifically using the local whittle estimator and its variants we examine whether relative per capita co2 emissions are fractionally integrated that is they are long memory processes which although highly persistant may revert to the mean trend in the long run our results suggest that co2 emissions within 13 out of 18 oecd countries are indeed fractionally integrated implying that they converge over time albeit slowly interestingly though the countries whose emissions are not found to be fractionally integrated are some of the highest polluters within the oecd at least in per capita terms our results have implications both for future studies of co2 convergence and for climate policy

the price of beer this paper is an empirical exploration into factors which are responsible for differences in the inter state price of beer though primarily a statistical exercise the current work has implications for policy decisions in particular the role of taxes and regulatory constraints on the relationships between brewer wholesaler and retailer are highlighted using an as yet untapped data source regression analysis indicates that a substantial proportion of the variance in the inter state price of beer can be explained by demand pressure transportation costs and the price of substitutes as well as taxes and the presence of legally mandated exclusive territories governing the wholesale distribution of beer

the effect of distance and road quality on food collection marketing margins and traders wages evidence from the former zaire abstract food price variation is typical of the food economies of many low income countries the presence or absence of road infrastructure is perceived to be one of the main determinants of this variation this analysis shows that in the case of the former zaire food price dispersion is significant both across products and across regions it is demonstrated that transportation costs explain most of the differences in food prices between producer regions and that road quality is an important factor in the transportation costs however food prices decrease relatively faster than transportation costs increase and traders wages are higher on bad roads

the effects of improved roads on wages and employment evidence from rural labour markets in indonesia abstractthis paper examines the impact of road quality on labour supply and wages using household panel data from rural indonesia the analysis uses fixed effect instrumental variable estimation by first differencing two round panel data first road projects are found to increase the transportation speed second the empirical results from intra village variations of household endowments and labour market behaviour show that an increase in transportation speed raised wages in both non agricultural and agricultural employment and was associated with a decline in working time in agricultural employment for the households whose members are relatively educated the findings support potential complementarity between road quality and education implying that the government s public investments in roads and education should be coordinated to capture cross augmenting positive impacts in the long run

alcohol control laws and the consumption of distilled spirits and beer this article tests the social marketing effectiveness of alcohol control laws designed to reduce the consumption of alcoholic beverages the study uses state level historical data to estimate the demand for distilled spirits and beer using economic sociodemographic and control law explanatory variables spirits and beer consumption are found to react differently to changes in economic sociodemographic and regulatory variables these differences suggest a consumer and product segment based approach to alcohol control laws or social marketing that emphasizes measures directed at youths for beer and at price for spirits

future inequality in co2 emissions and the impact of abatement proposals this paper analyzes future carbon emissions inequality using a group decomposition of the gini index business as usual projections to the year 2100 for 135 countries show inequality in per capita emissions declines slowly next the impact on emissions levels and inequality of the kyoto protocol and other abatement proposals for annex ii countries in 2010 are measured with a focus on the gap narrowing and reranking effects substantial reranking of per capita emissions between annex ii and non annex ii countries will not occur unless the former reduce their emissions by at least 50 versus 1990 levels and the latter continue growing unabated

international inequalities in per capita co2 emissions a decomposition methodology by kaya factors in this paper we provide a methodology for decomposing international inequalities in per capita co2 emissions into kaya multiplicative factors and two interaction terms we use the theil index of inequality and show that this decomposition methodology can be extended for analyzing between and within group inequality components we can thus analyze the factors behind inequalities in per capita co2 emissions across countries between groups of countries and within groups of countries the empirical illustration for international data suggests some points firstly international inequality in per capita co2 emissions is mainly attributable to inequalities in per capita income levels which helps to explain its recent reduction while differences in carbon intensity of energy and energy intensity have made a less significant contribution this result is strongly influenced by the performance of china and india secondly the between group inequality component which is the biggest component is also largely explained by the income factor thirdly the within group inequality component increased slightly during the period something mainly due to the change in the income factor and the interaction terms in a few regions

distributional aspects of emissions in climate change integrated assessment models the recent failure of copenhagen negotiations shows that concrete actions are needed to create the conditions for a consensus over global emission reduction policies a wide coalition of countries in international climate change agreements could be facilitated by the perceived fairness of rich and poor countries of the abatement sharing at international level in this paper i use two popular climate change integrated assessment models to investigate the path and decompose components and sources of future inequality in the emissions distribution results prove to be consistent with previous empirical studies and robust to model comparison and show that gaps in gdp across world regions will still play a crucial role in explaining different countries contributions to global warming

energy consumption in service industries challenging the myth of non materiality abstract this paper addresses the issue of energy consumption in service industries official energy statistics show that the amount of energy consumed in service industries is quite small and this is explained in the theoretical literature by the presumed intangibility of services our hypothesis however is that the energy consumed by services has been underestimated after identifying and analyzing the full range of sources of energy consumption in service industries we show that official energy statistics account for only a part of this consumption our work is based on a thorough rereading of the economics literature on services especially concerning the definition of services and the specificities of the service provision process done in light of our knowledge about energy consumption eventually using the 2007 french national transportation and travel survey we estimate one of the overlooked sources of energy consumption the one pertaining to mobility

can police deter drunk driving economic studies using aggregate data generally find that higher taxes are the most effective policy to reduce drunk driving while criminologists report strong evidence supporting law enforcement measures in policy evaluations this paper evaluates these differing perspectives using the aggregate data that is typically used in the economic literature ols and fixed effects models show that police can affect the probability of arrest for drunk driving and in combination with evidence from dui deterrence experiments this suggests that the failure of economic models to detect deterrence reflects the lack of systematic and sustained police efforts against dui

unpacking the meaning of market access evidence from rural kenya summary this paper critically examines the dimensions of market access using farm panel survey data from kenya we investigate changes in ten indicators of market access during the 1997 2010 post liberalization period we find major improvements in certain market access conditions and little change in others there is generally low correlation between alternative indicators of market access all purpose indicators may not accurately reflect specific market access conditions of interest distances to physical infrastructure are often not representative of farmers access to markets changes in specific market access conditions may have more to do with the behaviors of marketing agents we consider the implications of these findings for agricultural marketing policies and for research methods

are schooling and roads complementary evidence from income dynamics in rural indonesia summary we examine the impact of spatial connectivity on household income growth and non agriculture labor supply in indonesia by combining household panel data and village census data during the period of 1995 2007 our empirical results show that the impacts of improved local road quality on income growth and the transition to non agricultural labor markets depend on household education and distance to economic centers in particular post primary education significantly increases the benefit from the improvement of local spatial connectivity in remote areas promoting labor transition to non agricultural sectors education and local road quality are complementary mutually increasing non agricultural labor supply and income in remote areas in contrast the initial landholding size does not affect the benefit from improved road quality

the green revolution development of labor markets and poverty reduction in the rural philippines 1985 2004 using a long term household panel data set collected in three rural villages in the philippines in 1985 and 2004 this article explores how the green revolution and development of the labor markets have affected household income and poverty situation the initial rise in income associated with the green revolution and a stronger credit access has enabled the households to allocate funds for investing in children s schooling with the increased integration of the rural with the urban labor market these children are able to explore labor opportunities in the nonfarm sector that resulted in a decline in poverty by about one half the landless households who are less educated benefited too from the expansion of the nonfarm labor market because of the rise in rural wages associated with the rise in demand for the unskilled labor which is by far their most important asset

exclusive territories and manufacturers collusion this paper highlights the rationale for exclusive territories in a model of repeated interaction between competing supply chains we show that with observable contracts exclusive territories have two countervailing effects on manufacturers incentives to sustain tacit collusion first granting local monopolies to retailers softens competition in a one shot game hence punishment profits are larger thereby rendering deviation more profitable second exclusive territories stifle deviation profits because retailers of competing brands adjust their prices to the wholesale contract offered by a deviant manufacturer whereas intrabrand competition prevents such instantaneous reaction we show that the latter effect tends to dominate thereby making exclusive territories a more suitable organizational mode to cooperate these insights are robust to endogenous communication between manufacturers we also consider retailers service investments here a novel effect emerges that softens the procollusive value of exclusive territories retailers of a deviant manufacturer increase investments which renders deviation more profitable this paper was accepted by preyas desai marketing

beer and the tie did divestiture of brewer owned public houses lead to higher beer prices in 1989 the united kingdom monopolies and mergers commission mmc recommended measures that eventually led brewers to divest themselves of 14 000 public houses the mmc claimed that their recommendations would lower retail prices and increase consumer choice since that time however retail prices have risen this paper contains an econometric analysis of the transition period the analysis is based on a model of the relationship between retail price and retail organisational form that emphasises how exclusive dealing clauses and strategic factors interact in 1989 in an important decision the united kingdom monopolies and mergers commission mmc recommended measures that eventually led brewers to divest themselves of 14 000 public houses the mmc claimed that their recommendations would lower retail prices and increase consumer choice there is considerable doubt however that their objectives were achieved indeed since the time that the recommendations were implemented retail prices have risen it is not clear however if prices would have increased in the absence of divestiture one goal of my research is to provide an answer to this question the mmc s recommendations created an exceptional opportunity to assess the effects that different contractual arrangements have on retail prices indeed one would like to investigate this relationship ceteris paribus unfortunately however the choice of vertical market structure is normally endogenous and it is impossible to condition on all of the factors that affect the contracting decision in the uk beer industry in contrast the government ordered changes in the type and terms of the contracts under which national brewers could operate their licensed premises increased separation between brewer and publican therefore was not due to changes in economic conditions moreover some premises the free houses that were not owned by a brewer were not affected by the beer orders the existence of a control group facilitates the analysis by strengthening the conclusions that one can draw in recent years economists have moved away from simple theories of vertical

state infrastructure and productive performance recent research on productivity growth has focused on public infrastructure and its impact on economic growth and productivity the authors construct a model of firms technology and behavior taking advantage of the analytical framework provided in the cost function based applied production theory literature and apply it to state level data for u s manufacturing they find that infrastructure investment provides a significant return to manufacturing firms and augments productivity growth the net benefits of infrastructure investment may or may not be positive depending upon the social costs of infrastructure investment and the relative growth rates of output and infrastructure copyright 1996 by american economic association

determinants of co2 emissions in a small open economy abstract the aim of the paper is to explore the relationship between economic development and carbon dioxide co2 emissions for a small open and industrialized country austria we test whether an environmental kuznets curve relationship also holds for a single country rather than concentrating on panel or cross section data for a set of countries a cubic i e n shaped relationship between gdp and co2 emissions is found to fit the data most appropriately for the period 1960 1999 and a structural break is identified in the mid seventies due to the oil price shock furthermore two variables are additionally significant import shares reflecting the well known pollution haven hypothesis and the share of the tertiary service sector of total production gdp accounting for structural changes in the economy emission projections derived from this single country specification support the widely held opinion that significant policy changes are asked for when implementing the kyoto protocol in order to bring about a downturn in future carbon emissions

implicit taxes collected by state liquor monopolies state monopolization or taxation aresupposedly justified because of negativeexternalities from alcohol consumption butrecent research questions the efficacy ofsuch policies suggesting that their actualgoals may be revenue generation consideration of this hypothesis isfacilitated by estimates of the implicittaxes charged in monopoly states whichgenerally are substantially higher thantaxes in non monopoly states evidencethat monopolization and high taxes do notaffect the level of externalities is alsoexplained by adjustments that rationalindividuals make to avoid the consequencesof such policies thus providing furthersupport for the revenue maximizationhypothesis

the competitive effects of exclusive dealing evidence from the u s beer industry abstract several recent theoretical articles have modeled the effects of exclusive dealing contracts that restrict dealers to selling a single brand yet detailed empirical analysis of the impact of exclusivity on actual market outcomes has been lacking i analyze a unique set of firm level data on nearly 400 beer distributors in the united states the impacts of economies of scale and restrictions on distributor promotional activities on the use of exclusive dealing are measured as well as the effects of exclusivity on costs prices and output the results support the view that exclusive dealing serves to minimize manufacturer dealer incentive conflicts and enhances social welfare

convergence in carbon dioxide emissions among industrialised countries revisited this paper examines the existence of stochastic and deterministic convergence of carbon dioxide co2 emissions in 23 countries over the period 1960 2002 for that purpose we conduct unit root testing by employing the recently developed panel stationarity test of carrion i silvestre et al carrion i silvestre j l del barrio castro t lopez bazo e 2005 breaking the panels an application to the gdp per capita econometrics journal 8 159 175 which assumes a highly flexible trend function by incorporating an unknown number of structural breaks we accommodate general forms of cross sectional dependence as well as control for finite sample bias through bootstrap methods overall our analysis provides strong evidence supporting both stochastic and deterministic convergence in co2 emissions thus confirming strazicich and list strazicich m c list j a 2003 are co2 emission levels converging among industrial countries environmental and resource economics 24 263 271 and westerlund and basher westerlund j basher s a 2007 testing for convergence in carbon dioxide emissions using a century of panel data environmental and resource economics forthcoming findings of convergence

trains trade and transaction costs how does domestic trade by rail affect market prices of malawi agricultural commodities this paper measures the impact of low cost transport by rail in malawi on the dispersion of agricultural commodities prices across markets by exploiting the quasi experimental design of the nearly total collapse of domestic transport by rail in january 2003 due to the destruction of a railway bridge at rivirivi balaka estimations are based on monthly market prices of four agricultural commodities maize groundnuts rice and beans in 27 local markets for the period 1998 2006 market pairs connected by rail when the railway line was operational are intervention observations railway transport services explain a 14 percent to 17 percent reduction in price dispersion across markets geographical reach of trade varies by crop most likely related to storability and geographical spread of production perishability appears to increase impact reflecting limited scope for arbitrage overall impacts are remarkably similar in size across commodities

inequality of energy intensities across oecd countries a note abstract this paper proposes the use of theil s second measure to analyze international energy intensity differences this index allows differences to be broken down within and between groups of countries in a consistent manner an analysis of oecd countries for the period 1971 1999 shows some basic points first the fall in energy intensities differences is attributable both to within group and between group inequality components second between group inequalities are currently the main contributor to the whole inequality value finally a detailed exploration on within group inequalities reveals the significant explanatory role played by eu countries

convergence of per capita carbon dioxide emissions in the eu legend or reality abstract designing appropriate environmental and energy policies in order to meet the kyoto protocol s carbon dioxide co 2 reduction targets in the european union eu requires a detailed examination and thorough understanding of co 2 emission trends across the eu member states this paper investigates whether co 2 emissions have converged across 22 european countries over the 1971 to 2006 period the bayesian shrinkage estimation method is employed to do this work and the results reveal the following first the hypothesis of absolute convergence in per capita co 2 emissions is supported and a slight upward convergence is observed second the fact that countries differ considerably in both their speed of convergence and volatility in emissions makes it possible to identify different groups of countries third the results with respect to convergence do not vary much once the share of industry in gdp is accounted for in a conditional convergence analysis however a decreasing share of industry in gdp seems to contribute to a decline in per capita emissions these findings may carry important implications for both national and eu environmental policies

advertising as special service provision under non price vertical restraints exclusive territories in beer distribution this article presents statistical evidence which supports lester telser s 1960 hypothesis that when vertical restraints are made illegal intrabrand competition results which diminishes the provision of point of sale special services this results because of the public goods problem exhibited by the special services increased special service provision by the national manufacturer must then substitute for the special service provision left unfilled by the wholesaler evidence relating to the efficacy of such substitution is also presented

inequality in co2 emissions across countries and its relationship with income inequality a distributive approach this paper analyses the inequality in co2 emissions across countries and groups of countries and the relationship of this inequality with income inequality across countries for the period 1971 1999 the research employs the tools that are usually applied in income distribution analysis the methodology used here gives qualitative and quantitative information on some of the features of the inequalities across countries that are considered most relevant for the design and discussion of policies aimed at mitigating climate change the paper studies the relationship between co2 emissions and gdp and shows that income inequality across countries has been followed by an important inequality in the distribution of emissions this inequality has diminished mildly although the inequality in emissions across countries ordered in the increasing value of income inequality between rich and poor countries has diminished less than the simple inequality in emissions lastly the paper shows that the inequality in co2 emissions is mostly explained by the inequality between groups with different per capita income level the importance of the inequality within groups of similar per capita income is much lower and has diminished during the period especially in the low middle income group

efficiency effects of exclusive territories evidence from the indiana beer market the welfare effects of vertically imposed exclusive territories and the appropriate antitrust policy toward them have long been debated this paper sheds light on the exclusive territory controversy by examing the effects of indiana s 1979 ban on the grant of exclusive territories to beer wholesalers using time series data for 1948 1990 we find the ban reduced beer consumption in indiana by 6 percent coupled with previous evidence that indiana s ban reduced price our results suggest that exclusive territories in the beer industry increase demand and enhance welfare by stimulating the provision of dealer services

sharing resources the global distribution of the ecological footprint abstract this paper examines how the human demand on bioproductive lands as measured by the ecological footprint is distributed across the globe using methods commonly used to measure the distribution of income measuring the distribution of natural resource use will be necessary to achieve an economy that is sustainable just and efficient currently different nations place different demands on the environment i e the ecological footprint is not evenly distributed across the globe calculation of the gini coefficient for total ecological footprint and its components explains the sources of inequality in overall resource use calculation of the atkinson index shows how inequality in the ecological footprint is related to the inequality of income and environmental intensity

estimates of trends in global income and resource inequalities it is often argued that the inequality in the world is increasing we study the global income and resource inequality between 1960 and late 1990s income is measured in gdp capita in terms of both current market exchange rate and purchasing power parity ppp consumption of paper energy electricity food animal food as well as emissions of carbon dioxide is also studied changes in the absolute and relative gap between the top and bottom 20 consumers as well as the atkinson measure are used as inequality indicators some remarks are made on how to compare income across countries and how inequality should be measured we find that the inequality in terms of gdp capita measured in ppp terms is rather stable in relative terms but increasing in absolute terms we conclude that inequality as measured by the atkinson index is decreasing for all resources but that the gap in resource consumption in absolute terms is increasing for paper and electricity consumption

telecommunications infrastructure and economic development a simultaneous approach in diesem beitrag wird untersucht welchen einflus die telekommunikations infrastruktur auf die wirtschaftliche entwicklung ausubt diese wichtige frage hat im zusammenhang mit der diskussion um informationsautobahnen aktualitat erlangt in der vorliegenden studie wird der einflus der telekommunikations infrastruktur fur 21 oecdlander fur die vergangenen 20 jahre analysiert es wird ein strukturgleichungsmodell geschatzt in dem investitionen in die telekommunikations infrastruktur als endogene variable erfast werden und in einem mikromodell angebot und nachfrage nach telekommunikations investitionen spezifiziert werden das mikromodell wird dann zusammen mit der makro wachstumsgleichung geschatzt als ergebnis stellen die autoren dann eine positive kausalbeziehung zwischen telekommunikations investitionen und wirtschaftlicher entwicklung fest wenn eine kritische masse an telekommunikations infrastruktur existiert

household composition labor markets and labor demand testing for separation in agricultural household models this paper tests the separation of farm labor supply and labor demand decisions using the observation that household composition is an important determinant of farm labor use with nonseparation after assessing the conditions under which the test has power against several alternatives an empirical model is developed to test the proposition that farm employment is independent of family composition the model is estimated on a data set from rural java the null hypothesis that farm labor allocation decisions are independent of household structure is not rejected the results are robust to different specifications of the labor demand function copyright 1992 by the econometric society

child labor urban proximity and household composition using detailed survey data from nepal this paper examines the determinants of child labor with a special emphasis on urban proximity we find that children residing in or near urban centers attend school more and work less in total but are more likely to be involved in wage work or in a small business the larger the urban center the stronger the effect is urban proximity is found to reduce the workload of children and improve school attendance up to 3 h of travel time from the city in areas of commercialized agriculture located 3 to 7 h from the city children do more farm work urban proximity effects are accounted for by a combination of local labor supply and demand conditions most notably the local importance of agriculture the education level of the parents and the local wage rate child servants which represent a small proportion of all children work much harder than other children and appear particularly at risk

international ecological footprint inequality a methodological review and some results scarcities of environmental services are no longer merely a remote hypothesis consequently analysis of their inequalities between nations becomes of paramount importance for the achievement of sustainability this paper aims on the one hand at revising methodological aspects of the inequality measurement of certain environmental data and on the other at extending the scarce empirical evidence relating to the international distribution of ecological footprint ef most of the techniques currently important in the literature are revised and then tested on ef data with interesting results we consider the underlying properties of different inequality indices those indices which fit best with environmental inequality measurements are cv 2 and ge 2 because of their neutrality property subgroup and source decompositions are also discussed from a methodological perspective empirically this paper contributes to the environmental inequality measurement of ef this inequality has been quite stable subgroup decomposition by using exogenous country groups world bank classification conclude that between group inequality explains almost the totality of international ef inequality source decomposition warns of the dangers of confining co 2 emissions reduction to crop based energies because of the implications for basic needs satisfaction

is public expenditure productive abstract this paper considers the relationship between aggregate productivity and stock and flow government spending variables the empirical results indicate that i the nonmilitary public capital stock is dramatically more important in determining productivity than is either the flow of nonmilitary or military spending ii military capital bears little relation to productivity and iii a core infrastructure of streets highways airports mass transit sewers water systems etc has most explanatory power for productivity the paper also suggests an important role for the net public capital stock in the productivity slowdown of the last fifteen years

population pressures migration and the returns to human capital and land insights from indonesia rapid population growth in many developing countries has raised concerns regarding food security and household welfare to understand the consequences of population growth in a general equilibrium setting this paper examines the dynamics of population density and its impacts on household outcomes the analysis uses panel data from indonesia combined with district level demographic data historically indonesia has adapted to land constraints through a mix of agricultural intensification expansion of the land frontier and nonfarm diversification with public policies playing a role in catalyzing all of these responses in contemporary indonesia the paper finds that human capital determines the effect of increased population density on per capita household consumption expenditure on the one hand the effect of population density is positive if the average educational attainment is high above junior high school while it is negative otherwise on the other hand farmers with larger holdings maintain their advantage in farming regardless of population density the paper concludes with some potential lessons for african countries from indonesia s more successful rural development experiences

beer taxation and alcohol related traffic fatalities the majority of studies of alcohol related traffic fatalities find beer taxes to be an important policy variable this is surprising since beer taxes only have a small impact on consumption and heavy drinkers are the least responsive to prices this study shows that the tax relationship is not robust across data periods and that it reflects missing variable biases while lack of control for law enforcement efforts does not appear to bias tax coefficients failure to include determinants of alcohol consumption other than taxes and drinking age and or factors that simultaneously determine drinking behavior and political support for alcohol taxes apparently do

rising real wages mechanization and growing advantage of large farms evidence from indonesia this paper examines dynamic patterns of land use capital investments and wages in agriculture using farm panel data from indonesia the empirical analysis shows that with an increase in real wages that prevailed in both agricultural and non agricultural sectors in rural areas relatively larger farmers increased the size of operational farm land by renting in land as well as used more hired in machines through machine rental and or service providers which induces the substitution of labor by machines machines and land are complementary and consistently the inverse farm size productivity relationship tends to be reversed among relatively large holders the results support growing diminishing advantage of large small farms in the presence of rapidly rising real wages and have food security policy implications to many asian countries where real wages are rapidly rising and small farms are predominant

nonfarm employment agricultural shocks and poverty dynamics evidence from rural uganda this article examines the role of off farm employment in poverty reduction over a short period of time by using panel data from 894 rural ugandan households in 2003 and 2005 taking advantage of the unique off farm labor supply and income data we analyzed how households respond to negative agricultural shocks especially through off farm labor supply and income to mitigate crop income loss our analysis indicates that the flexibility of labor time allocation varies across off farm jobs and that only low skilled and low wage jobs tend to be used to mitigate negative shocks especially among the asset poor

advertising restrictions and concentration the case of malt beverages the relationship between state imposed advertising restrictions and state level market concentration in the malt beverage industry is examined the authors find that the presence of proscriptions on price advertising significantly increases market concentration at the state level both absolutely and relative to a measure of national concentration the evidence also indicates that banning local nonprice advertising in addition to price advertising yields no marginal significant change in either measure of state level concentration analysis of individual brewers market shares suggests that large national brewers gain at the expense of smaller brewers when price advertising is restricted copyright 1995 by mit press

are experience and schooling complementary evidence from migrants assimilation in the bangkok labor market abstract this paper models the assimilation process of migrants and shows evidence of the complementarity between their destination experience and upon arrival human capital bayesian learning is assessed using panel data of wages from bangkok thailand it is found that i schooling returns are lower for migrants than for natives ii the accumulation of destination experience raises wages for migrants iii the experience effect is greater for more educated agents and iv the complementarity increases as destination experience accumulates the results imply that more educated migrants have higher learning efficiency and can perform tasks of greater complexity ultimately yielding higher wage growth in the destination market

pooled mean group estimation of an environmental kuznets curve for co2 abstract we apply the pooled mean group estimator to test for the existence of an environmental kuznets curve for co2 in 22 oecd countries this approach allows for more flexible assumptions in a panel data framework the period goes from 1975 to 1998

income inequality and pollution a reassessment of the environmental kuznets curve abstract improvements in some measures of air and water quality can accompany rising per capita income as illustrated by the so called environmental kuznets curve for pollution variables which show such a relationship we hypothesize that a more equitable distribution of power contributes to these outcomes by enhancing the influence on policy of those who bear the costs of pollution relative to the influence of those who benefit from pollution generating activities an empirical analysis of international variations in seven indicators of air and water quality supports this hypothesis literacy political rights and civil liberties are found to have particularly strong effects on environmental quality in low income countries

reforms investment and poverty in rural china shenggen faninternational food policy research institute and institute of agriculturaleconomics of the chinese academy of agricultural scienceslinxiu zhangcenter for chinese agricultural policy of the chinese academy of sciencesxiaobo zhanginternational food policy research institutei introductionchina is one of the few countries in the developing world that has madeprogress in reducing its total number of poor over the past 25 years

the causal factors of international inequality in hbox co _ 2 emissions per capita a regression based inequality decomposition analysis this paper uses the possibilities provided by the regression based inequality decomposition fields in res labor econ 22 1 38 2003 to explore the contribution of different explanatory factors to international inequality in hbox co 2 emissions per capita in contrast to previous emissions inequality decompositions which were based on identity relationships this methodology does not impose any a priori specific relationship thus it allows an assessment of the contribution to inequality of different relevant variables in short the paper appraises the relative contributions of affluence sectoral composition demographic factors and climate the analysis is applied to selected years of the period 1993 2007 the results show the important though decreasing share of the contribution of demographic factors as well as a significant contribution of affluence and sectoral composition

distribution dynamics of co2 emissions this paper uses nonparametric methods to examine the convergence in co2 emissions per capita on a sample of 100 countries for the period 1966 1996 industrial countries show a convergence pattern however there is little evidence of convergence for the whole sample

risks and spatial connectivity evidence from food price crisis in rural indonesia abstract this paper examines the impact of the agricultural commodity price surge globally experienced in 2007 2008 and thereafter on income growth of agricultural producers and non producers using recent panel data from indonesia first during this period producers experienced significantly higher earnings and total income growth than non producers narrowing their income gap second the negative effect on non producers real incomes was smaller in spatially well connected areas where to mitigate the impact private transfers such as remittances as well as employment incomes increased among non producers in contrast government programs did not effectively cushion the income shock therefore informal insurance was more effective than formal government funded social protection programs to mitigate the crisis shock

the economic theory of vertical restraints the types of contracts arising in a typical vertical manufacturer retailer relationship are more sophisticated than a simple uniform price in addition to setting per unit prices manufacturers and retailers also revert to non linear pricing and non price instruments these instruments or contracts are referred to as vertical restraints and can take the form of franchise fees resale price maintenance exclusive dealing exclusive territories and slotting allowances the use and the effects of one type of instrument versus another depend crucially on specific market assumptions upstream and downstream and on the division of bargaining power between manufacturers and retailers this paper surveys the industrial organization literature on retail pricing and shows that vertical restraint instruments have important effects on producer and consumer prices market structure efficiency and welfare

the environmental kuznets curve does one size fit all abstract this paper uses a new panel data set on state level sulfur dioxide and nitrogen oxide emissions from 1929 1994 to test the appropriateness of the one size fits all reduced form regression approach commonly used in the environmental kuznets curve literature empirical results provide initial evidence that an inverted u shape characterizes the relationship between per capita emissions and per capita incomes at the state level parameter estimates suggest however that previous studies which restrict cross sections to undergo identical experiences over time may be presenting statistically biased results

markets beer in germany and the united states between 1950 and 2000 the four firm producer concentration ratio for beer increased from 22 to 95 in the united states and anheuser busch s share of domestic output ballooned from 6 to 54 percent in germany concentration has risen but it remains low in 2000 the four firm producer concentration ratio was just 29 and the eight firm ratio in germany was smaller than the one firm ratio in the united states in 2005 after five years of important mergers involving big brewers the german beer industry was still much less concentrated than its american counterpart in this article i discuss several candidate explanations for the failure of beer producer concentration to rise as much in germany as in the united states the relevance of the new technologies to german brewers the preferences of german consumers the rules for advertising on german television and other factors largely absent from the consensus interpretation of american experience i find that market structure depends on a remarkably broad range of factors extending well beyond technological opportunity and market size