analyzing nutritional impacts of policies an empirical study for malawi summary widespread malnutrition in developing countries calls for appropriate strategies presupposing good knowledge about nutritional impacts of policies little previous work has been carried out in this direction especially with respect to micronutrients we use representative household data from malawi and develop a demand systems approach to estimate income and price elasticities of food demand and nutrient consumption these estimates are applied for policy simulations given multiple nutritional deficiencies income related policies are better suited than price policies to improve nutrition while consumer price subsidies for maize improve calorie and mineral consumption they can worsen vitamin consumption in urban areas

institutions and the environmental kuznets curve for deforestation a crosscountry analysis for latin america africa and asia abstract the relationship between deforestation and income across 66 countries of latin america africa and asia is examined institutional characteristics as well as macroeconomic policies of each country are hypothesized to impact deforestation results show strong evidence of an environmental kuznets curve ekc relationship between income and deforestation for all three continents institutional structure and macroeconomic policy significantly affect the tropical deforestation process improvements in political institutions and governance significantly reduce deforestation the factors leading to deforestation differ across regions however and there is no one size fits all global policy recommendation for restraining the tropical deforestation process

nonparametric and parametric analysis of calorie consumption in tanzania abstract the empirical literature on the demand for calories in developing countries suggests mixed results regarding the role of income and other socioeconomic characteristics on calorie demand this study employs both nonparametric and parametric methods to examine the impact of household expenditure and other socioeconomic variables on household demand for calories in tanzania using recent survey data the parametric methods include estimation strategies that ensure consistent estimates in the presence of behavioral endogeneity and measurement error under each estimation strategy we employ we find a strongly significant and positive relationship between household expenditure and calorie demand lending support to conventional wisdom that income growth can alleviate inadequate calorie intake the results also show a negative and significant relationship between food prices and calorie demand suggesting that effectively targeted food subsidies for very poor households may play a role in improving their calorie intake

identifying the efficiency status in network dea abstract data envelopment analysis dea is commonly employed to evaluate the efficiency performance of a decision making unit dmu that transforms exogenous inputs into final outputs in such a black box dea approach details of an internal production process of the dmu are typically ignored and hence the locations of inefficiency are not adequately provided in view of this dea researchers have recently developed various network approaches by looking into the black box where the inputs that enter the box and the outputs that come out of it are only considered however most of these network approaches evaluate divisional efficiency by using an optimal solution of their respective optimization problem if such an optimal solution is used in the case when there are multiple optima then managerial guidance based on this solution alone may be inappropriate because more appropriate targets from the viewpoint of management may be ignored taking this fact into account therefore we propose a network approach for identifying the efficiency status of each dmu and its divisions this approach provides a practical computational procedure

the impact of maize price shocks on household food security panel evidence from tanzania abstract using three waves 2008 09 2010 11 2012 13 of the tanzanian national panel survey this study investigates the impact of maize price shocks on household food security between 2008 09 and 2012 13 calorie intake stagnated for urban households yet sharply deteriorated for rural households the latter was driven by a significant decline in the consumption of the major staple maize which showed strongest price hikes among all major food items fixed effects regressions indicate a clear negative relationship between maize prices and average household energy intake almost all population groups were found to be negatively affected by maize price shocks with rural landless households being the most vulnerable group in particular a 50 percent rise in maize prices decreases caloric intake for rural urban households on average by 4 4 5 4 percent and for rural landless households by 12 6 percent results further indicate that subsistence agriculture can act as an effective strategy to insure against food price volatility

income elasticities for food calories and nutrients across africa a meta analysis abstract this paper aims to provide a better understanding of the relationship between income and the demand for different types of food nutrients and calories in africa by conducting a meta analysis of income elasticity estimates we build a meta sample consisting of 1523 food income elasticities 369 nutrient income elasticities and 123 calorie income elasticities extracted from 66 primary studies covering 48 african countries the sample displays a large heterogeneity in income elasticity estimates which our meta analysis aims to explain by looking into attributes of the primary studies and characteristics of the countries considered there are significant differences in the size of the income elasticities across food and nutrient groups foods that make up basic diets tend to have lower income elasticities while elasticities are considerably higher for less basic and more aspirational foods the role of methodological attributes of the primary studies in explaining heterogeneity is found to be small overall our results confirm that although income growth in africa will increase food consumption and lead to more nutritionally diverse diets it is also associated with excessive intakes of fats and sugars raising concerns about over in addition to undernutrition this suggests that income based policies can still play a role in the fight against hunger but that targeted programs are needed to promote nutritionally valuable and healthy diets

cyclical productivity in a model of labor hoarding abstract this paper develops a dynamic model of labor hoarding to explain two empirical facts the cyclical behavior of total factor productivity and the dynamic correlations of sectoral productivity with aggregate variables the model features convex costs of adjusting the labor force which induce firms to vary the intensity of labor utilization over the cycle in particular cyclical variations in labor effort take place as a response to expected future changes in industry conditions i test the restrictions imposed by the model for several two digit manufacturing industries under different assumptions about market structure and returns to scale then using the assumption that aggregate variables carry information about future changes in industry conditions i simulate the model s dynamic response of hours and productivity to aggregate innovations and compare them to those estimated from the data

some models for estimating technical and scale inefficiencies in data envelopment analysis in management contexts mathematical programming is usually used to evaluate a collection of possible alternative courses of action en route to selecting one which is best in this capacity mathematical programming serves as a planning aid to management data envelopment analysis reverses this role and employs mathematical programming to obtain ex post facto evaluations of the relative efficiency of management accomplishments however they may have been planned or executed mathematical programming is thereby extended for use as a tool for control and evaluation of past accomplishments as well as a tool to aid in planning future activities the ccr ratio form introduced by charnes cooper and rhodes as part of their data envelopment analysis approach comprehends both technical and scale inefficiencies via the optimal value of the ratio form as obtained directly from the data without requiring a priori specification of weights and or explicit delineation of assumed functional forms of relations between inputs and outputs a separation into technical and scale efficiencies is accomplished by the methods developed in this paper without altering the latter conditions for use of dea directly on observational data technical inefficiencies are identified with failures to achieve best possible output levels and or usage of excessive amounts of inputs methods for identifying and correcting the magnitudes of these inefficiencies as supplied in prior work are illustrated in the present paper a new separate variable is introduced which makes it possible to determine whether operations were conducted in regions of increasing constant or decreasing returns to scale in multiple input and multiple output situations the results are discussed and related not only to classical single output economics but also to more modern versions of economics which are identified with contestable market theories

productivity market power and capacity utilization when spot markets are complete our test of price taking behavior looks at the choice of capacity rather than the choice of output it is motivated by a complete spot markets model in which goods are distinguished by the selling probabilities in addition to other characteristics when output is explained by total man hours and a capacity utilization proxy the coefficient of the first variable is the elasticity of capacity with respect to fixed labor under competition and risk neutrality this coefficient is equal to an average labor share we use this observation to interpret abbot griliches hausman s regressions and to argue that once the capacity utilization proxy is included in the regression hall s data at the manufacturing level fail to reject the joint hypothesis of competition and risk neutrality it is also argued that the coefficient of total man hours does not tell us anything about monopoly power once the capacity utilization proxy is omitted from the regression this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item

evaluating the environmental efficiency of a two stage system with undesired outputs by a dea approach an interest preference perspective abstract in this study we propose a new dea model to evaluate the environmental efficiency of a two stage system with undesired outputs the two stage system consists of two parts a production subsystem and a pollution treatment subsystem different choices for allocating resources to each subsystem represent different interest preferences of decision makers with the production subsystem corresponding to short term interests and the pollution treatment subsystem corresponding to long term interests based on a proposed new dea model three theorems are established to show the relationships between the interest preference parameter and the change of efficiency scores an empirical analysis was conducted using the data of 30 provinces and municipalities eight regions of china the empirical results show the effectiveness of the proposed model and the usefulness of the theorems for the real world data optimal efficiency rankings of the eight regions are provided and the efficiency rankings truly reflect the current environmental situations of these eight regions to examine the economic impacts and facilitate sustainable development we also analyze the shadow prices for undesired outputs corresponding implications of the empirical analysis are also discussed

industrial eco efficiency in china a provincial quantification using three stage data envelopment analysis abstract the coordinated development of industrialization and the ecological environment is vital to achieve ecological civilization in china integratively considering the economy energy and resources and environment this study aims to measure the industrial eco efficiency of 30 provinces autonomous regions and municipalities in china between 2005 and 2013 a three stage data envelopment analysis dea modeling approach is adopted to eliminate interference of the external environment and statistical noise with industrial eco efficiency measurement the results show that regional industrial eco efficiency in china is affected by the factors of the environmental regulation technological innovation level of economic development and industrial structure after eliminating the impacts of external environment and statistical noise china s national average industrial eco efficiency declines by 30 between 2005 and 2013 the industrial eco efficiency of the 30 provinces increases but at different rates of growth the variation of overall regional industrial eco efficiency is primarily caused by scale efficiency furthermore all the 30 provinces are classified into four groups to interpret the causes of variation and differences of regional industrial eco efficiency in general the management and technology level and the economy of scale of industries should be improved simultaneously even though specific opportunities for industrial eco efficiency improvement vary across provinces in china

does energy efficiency have a spatial spill over effect in china evidence from provincial level data abstract the analysis of spill over effect and mechanism is of great significance for eliminating the unbalanced development of regional energy efficiency our research considers the impact of external environmental factors on energy efficiency and the spatial durbin model is used to discover the spatial spill over effect and mechanism the main conclusions are as follows 1 eastern china is the most efficient region central china ranks second and west china ranks third with a gradually descending trend in the temporal dimension compared to the traditional dea model the results removed the environmental factors to be more in line with economic intuition 2 the spatial distribution of china s energy efficiency has a significant positive correlation from the global perspective implying that provinces with high energy efficiency are surrounded by neighbouring provinces with high energy efficiency and provinces with low energy efficiency are surrounded by neighbouring provinces with low energy efficiency provinces in each quadrant change slightly from a local perspective indicating that energy efficiency has stable spatial correlation characteristics 3 neighbourhood mimicry generates a complementary effect which promotes the spatial spill over of energy efficiency it is important to encourage yardstick competition and restrain lower tier competition 4 industrial structure market factors opening up energy price energy structure and environmental regulation exert certain influences on energy efficiency

measuring ecological efficiency with data envelopment analysis dea abstract the measurement of ecological efficiency provides some important information for the companies environmental management ecological efficiency is usually measured by comparing environmental performance indicators data envelopment analysis dea shows a high potential to support such comparisons as no explicit weights are needed to aggregate the indicators in general dea assumes that inputs and outputs are goods but from an ecological perspective also bads have to be considered in the literature bads are treated in different and sometimes arbitrarily chosen ways this article aims at the systematic derivation of ecologically extended dea models starting from the assumptions of dea in production theory and activity analysis a generalisation of basic dea models is derived by incorporating a multi dimensional value function f extended preference structures can be considered by different specifications of f e g specifications for ecologically motivated applications of dea

gendered impacts of the 2007 2008 food price crisis evidence using panel data from rural ethiopia abstract this paper provides empirical evidence on the gendered impact of the 2007 2008 food price crisis using panel data on 1400 households from rural ethiopia that were initially surveyed before the onset of the crisis in 1994 1995 1997 and 2004 and after food prices spiked in 2009 it investigates whether female headed households are more likely to report experiencing a food price shock and whether female headed households experiencing a shock are more or less likely to adopt certain coping strategies controlling for individual household and community characteristics our findings suggest that female headed households are more vulnerable to food price changes and are more likely to have experienced a food price shock in 2007 2008 because female headed households are also resource poor and have a larger food gap compared with male headed households they cope by cutting back on the number of meals they provide their households during good months and eating less preferred foods in general a combination of short term measures to protect diet diversity and micronutrient consumption of vulnerable groups and longer term measures to promote investment in sustainable agriculture such as strengthening women s property rights may increase the ability of poor and vulnerable households to cope better with food price increases

the eco efficiency of pulp and paper industry in china an assessment based on slacks based measure and malmquist luenberger index abstract china has become the world largest paper and paperboard producer however pulp and paper industry has involved high resource consumption and severe pollution especially for water this research has assessed the eco efficiency of china s pulp and paper industry at the national level and provincial level an overview regarding the cleaner production of china s pulp and paper industry was presented to reveal the measures for reducing environmental impact in the last two decades slacks based measure was used to analyze the efficiency levels of 16 provinces pulp and paper industries to uncover the underlying causes of eco efficiency performance malmquist luenberger index was calculated to discover the drivers of productivity growth of pulp and paper industries our results showed that the pollution treatment of china s pulp and paper industry has made progress in terms of water consumption and water pollution although the absolute amount of pollution discharge is still large chemical oxygen demand emissions are still the first critical influencing factor of pulp and paper industry s inefficiency furthermore efficiency progress was the dominating contribution of the industry s productivity growth between 2010 and 2013 the policies for adjusting the industrial structure of pulp and paper industry have resulted in the scale effects through eliminating backward production capacity and accelerating merger and acquisitions moreover the productivity of pulp and paper industry was underestimated when the undesirable outputs were ignored it indicates that the stricter environmental regulations have positive effects on paper companies to internalize environmental pressures in the production activities through environmental management in the future pulp and paper companies should further internalize the cost of pollution treatment through scale effects and technology improvement

enforcement of pollution levies in china abstract this paper investigates how industrial plants react to inspections conducted by environmental authorities under the pollution levy taxation regulation in china contrary to studies in the united states and canada magat and viscusi 1990 laplante and rilstone 1996 and previous studies in china dasgupta et al 2001 we find that inspections increase plants self reported pollution by 3 45 we provide a model to analyze plants strategic reactions to the pollution levy regulation in china the model concludes that under the specific regulation plants actual pollution might increase with inspections our study provides a key policy implication that inspections by environmental authorities in china are effective for verifying plants self reported pollution but not for reducing their pollution

decomposition weights and overall efficiency in two stage additive network dea abstract data envelopment analysis dea is a technique for performance evaluation of peer decision making units dmus the network dea models study the internal structures of dmus using two stage network structures as an example the current paper examines additive efficiency decomposition where the overall efficiency is defined as a weighted average of stage efficiencies and the weights are used to reflect relative importance of individual stages we show that weights may not affect the calculation of stage efficiency scores and that variation in the overall efficiency resulting from using different weights can be associated with constant stage efficiencies we demonstrate the need to isolate the impact of weights on the overall efficiency we propose to use a new overall efficiency index to address some pitfalls in weighted additive efficiency decomposition our findings are illustrated using two empirical data sets representing two types of two stage network structures

productivity and customer satisfaction in swedish pharmacies a dea network model this paper presents a data envelopment analysis dea network model that allows inclusion of customer satisfaction in efficiency and productivity measures the network consists of a production node and a consumption node and offers flexibility in modelling the production and consumption process where a firm specific allocation of input resources to production and customer oriented activities is allowed the proposed model is applied on a sample of swedish pharmacies with organizational objectives that necessitates a monitoring of efficiency and productivity as well as customer satisfaction estimation results from the network model and a direct productivity model without customer satisfaction are compared and indicate that the technical efficiency is lower under the network model the productivity results indicate productivity progress under both models albeit with a slower rate of change under the network model

dea like models for efficiency evaluations of specialized and interdependent units abstract the problem of evaluating the efficiency of a set of specialized and interdependent decision making subunits dmsus that make up a larger decision making unit dmu is considered the dmsus are interdependent in the sense that part of the output produced by each of them may be used as an input by the other ones they are also specialized hence non homogeneous as they may have not the same inputs and outputs for this problem some efficiency indexes are introduced and they are shown to satisfy some basic properties

efficiency analysis of major cruise lines three major cruise lines account for 82 of the total market share their financial statements show different results between the operating incomes and net incomes over time to examine the major causes of the differences this study measured the efficiency of the top three cruise lines to develop a network dea model to analyze the cruise operations at two stages namely operating and non operating stages in addition the determinants of the efficiencies were examined using a bootstrapped truncated regression model overall cruise lines were efficient at the operating stage but varied widely in the efficiency of the non operating stage cruise lines attempting high capacity expansion were relatively inefficient because of the heavy interest payments arising from the high debt to capital ratio moreover the neglected hedging policy regarding the financial risks also contributed to the inefficiency

cash crop production food price volatility and rural market integration in the third world large farmers in the third world often devote to cash crops a larger share of their land than do small farmers this paper suggests a possible explanation even in the presence of food markets third world farmers food security is best assured by food self sufficiency a model of crop portfolio choice under multivariate risk is used to show that reasonable assumptions regarding risk and preferences reproduce the observed pattern simulations further indicate that food market integration reduces the need for food self sufficiency policy implications are drawn regarding domestic trade liberalization and agricultural technology

industrial eco efficiency regional disparity and spatial convergence of china s regions abstract in this study the industrial eco efficiency measures of 30 chinese provinces municipalities and autonomous regions from 2001 to 2015 were estimated based on a proposed data envelopment analysis dea model and the non convex metafrontier undesirable outputs super efficiency slacks based measure ncmeta us sbm which simultaneously incorporates non convex metafrontier technology undesirable outputs and super efficiency into slacks based measure subsequently dynamic spatial econometric models were employed to test the spatial convergence of industrial eco efficiency the empirical results show that 1 the average value of industrial eco efficiency was the highest in the eastern region 0 67 followed by the western region 0 30 and central region 0 27 indicating the existence of a significant regional disparity 2 strong evidence for global and club spatial convergence of industrial eco efficiency was found with regard to regional heterogeneity provinces in the eastern region converged faster than those in the central and western regions while the convergence speed of industrial eco efficiency increased after 2008 with respect to temporal heterogeneity 3 the ownership structure appeared to have a higher impact on industrial eco efficiency than other controls in the presence of spatial conditional convergence these findings are robust with regard to both spatial econometric model and spatial weighting matrix specifications based on the empirical analysis the following policies promote industrial eco efficiency in china have been recommended first relevant authorities must take effective measures to encourage the central western regions to adopt clean energy technologies the energy subsidy policies should strive to break through the technological lock in and turn to regional green development second full advantage of the spatial effects must be taken and technological exchanges and cooperation among neighboring areas must be strengthened to ensure that the industrial eco efficiency of the central and western regions converge with those of the eastern coastal areas policy implications of multidimensional heterogeneity and adjustment of industrial structure should be highlighted while promoting industrial eco efficiency finally it is crucial to emphasize factors such as foreign direct investment fdi ownership and industrial structures to attract fdi and optimize the current industrial structure

dynamics of china s provincial level specialization in strategic emerging industries this paper examines the dynamics of technological specialization in strategic emerging industries seis within each of mainland china s 31 provinces and the likely effectiveness based on the experiences of taiwan and south korea of the provinces strategies for developing these industries grounded in economic decentralization theories the empirical method employed includes analyzing the scores on an sei specialization promotion index per each province alongside several analytics of invention patent data from each province in the seven seis newly designated by the central level government as of 2010 the data is quantitatively analyzed according to four groups of indicators based on the following specialization relevant concepts comparative advantages and technological capabilities economy size and income technological uncertainty and lifecycles and latecomer entry into complex technologies where knowledge is most cumulative the analysis finds that china s system of economic decentralization has partially worked to ensure provincial industrial policymaking is effective whereby a notable number of provinces are seemingly pursuing sei development strategies in terms of sei selection and promotion that may enable catch up however paradoxically at the same time the system appears to sometimes facilitate provincial sei development strategies that are quite risky or even likely ineffective

best performing us mutual fund families from 1993 to 2008 evidence from a novel two stage dea model for efficiency decomposition when analyzing relative performance especially at the institutional level the traditional data envelopment analysis dea models do not recognize vastly different and important activities as separate functions and therefore cannot identify which function may be the main source of inefficiency we propose a novel two stage dea model that decomposes the overall efficiency of a decision making unit into two components and demonstrate its applicability by assessing the relative performance of 66 large mutual fund families in the us over the period 1993 2008 by decomposing the overall efficiency into operational management efficiency and portfolio management efficiency components we reveal the best performers the families that deteriorated in performance and those that improved in their performance over the sample period we also make frontier projections for poorly performing mutual fund families and highlight how the portfolio managers have managed their funds relative to the others during financial crisis periods

toward a new conception of the environment competitiveness relationship accepting a fixed trade off between environmental regulation and competitiveness unnecessarily raises costs and slows down environmental progress studies finding high environmental compliance costs have traditionally focused on static cost impacts ignoring any offsetting productivity benefits from innovation they typically overestimated compliance costs neglected innovation offsets and disregarded the affected industry s initial competitiveness rather than simply adding to cost properly crafted environmental standards can trigger innovation offsets allowing companies to improve their resource productivity shifting the debate from pollution control to pollution prevention was a step forward it is now necessary to make the next step and focus on resource productivity

higher fuel and food prices impacts and responses for mozambique rising world prices for fuel and food represent a negative terms of trade shock for mozambique the impacts of these price rises are analyzed using various approaches detailed price data show that the world price increases are being transmitted to domestic prices short run net benefit ratio analysis indicates that urban households and households in the southern region are more vulnerable to food price increases rural households particularly in the north and center often benefit from being in a net seller position longer term analysis using a computable general equilibrium cge model of mozambique indicates that the fuel price shock dominates rising food prices from both macroeconomic and poverty perspectives again negative impacts are larger in urban areas the importance of agricultural production response in general and export response in particular is highlighted policy analysis reveals difficult trade offs between short run mitigation and long run growth improved agricultural productivity has powerful positive impacts but remains difficult to achieve and may not address the immediate impacts of higher prices

estimating the short run poverty impacts of the 2010 11 surge in food prices global food prices have increased substantially since mid 2010 as have prices in many developing countries in this study we assess the poverty impact of the price changes between june and december 2010 in twenty eight low and middle income countries this is done by gathering detailed information on individual households food production and consumption levels for thirty eight agricultural and food commodities to assess the impacts on household welfare this study estimates that this sudden food price surge increased the number of poor people globally but with considerably different impacts in different countries the heterogeneity of these impacts is partly related to the wide variation in the transmission of global prices to local prices and partly to differences in households patterns of production and consumption on balance the adverse welfare impact on net buyers outweighs the benefits to net sellers resulting in an increase in the number of poor and in the depth of poverty we estimate that the average poverty change was 1 1 percentage points in low income countries and 0 7 percentage points in middle income countries with a net increase of 44 million people falling below the 1 25 per day extreme poverty line

agricultural growth poverty and nutrition in tanzania abstract rapid economic growth does not appear to have significantly improved poverty and nutrition outcomes in tanzania we link recent production trends to household incomes using a regionalized recursive dynamic computable general equilibrium and microsimulation model results indicate some inconsistency between recent growth and poverty measurements in tanzania we also find that the structure of economic growth may have constrained the rate of poverty reduction agricultural growth has been driven by larger scale farmers who are less likely to be poor and has been concentrated among crops grown in specific regions of the country slow expansion of food crops and livestock also explain the weak relationship between agricultural growth and nutrition outcomes we find that accelerating agricultural growth particularly in maize strengthens the growth poverty relationship and enhances households caloric availability while also contributing significantly to growth itself

cash crop choice and income dynamics in rural areas evidence for post crisis indonesia in this article we investigate the factors affecting levels and growth of incomes in rural indonesia following the crisis of 1997 1998 in particular we investigate the relative roles of nonfarm incomes and productivity improvements achieved via changes in crops versus improvements on the same crops on income dynamics framing the article in the context of an optimal labor allocation model relying on unique household panel data from central sulawesi and using advanced panel econometric methods we find that local innovations related to the adoption and intensification of new cash crop varieties more specifically the shift from coffee to cocoa production can explain a substantial part of the observed post crisis developments causal estimates of the effect of growing cocoa suggest that households were on average able to achieve about 14 higher income levels during the post crisis period compared to the planting of other crops most notably coffee also our results demonstrate the importance of engagement in nonfarm activities for household income growth comparative analyses using a nationally representative survey suggest that similar processes are at play in other parts of indonesia

journey for green development transformation of china s metal industry a spatial econometric analysis abstract the metal industry mi in china is energy and emissions intensive this paper tries to provide guidance for the green development transformation of china s mi by investigating the green total factor productivity gtfp and its influencing factors using a global data envelopment analysis and a spatial tobit regression model the estimation results show that 1 from 2000 to 2015 gtfp of china s mi enjoyed a considerable improvement however the current value of gtfp of china s mi is still less than 0 5 indicating that gtfp of china s mi is far from efficient 2 the spatial correlation test shows that gtfps of china s provincial mis have positive spatial correlations most of the provinces scattered in high high and low low agglomerations 3 gtfp of china s mi is significantly positive related to the degree of marketization fiscal decentralization environmental regulation industrial scale is significantly negative related to resources endowment and product structure and has u shaped relationship with the level of economic development the above results suggest that china already has made remarkable achievements in promoting green development of its mi however there is much room for further improvement policy options for the green development transformation of china s mi include but are not limited to promoting market oriented and financial system reforms strengthening environmental supervision and optimizing industrial scale and product structure finally recommendations for the effective implementation of these policies are provided at the end of the study

influencing factors on hydrogen energy r d projects an ex post performance evaluation abstract to enhance its energy security korea made a significant r d investment in developing hydrogen energy technology over a period of 10 years the hydrogen energy r d center was established in 2003 with a 100 billion korean won krw government investment that would fund the initiative through 2012 this paper is a meaningful attempt to evaluate the ex post performance of completed hydrogen energy r d projects using data envelopment analysis dea through empirical analysis we focus mainly on measuring ex post performance and uncovering the influencing factors on that performance the results of our empirical analysis reveal several interesting findings first overall the ex post performance of completed projects is relatively low however there are major performance gaps among projects second r d type technology type and private sector investment are factors influencing project performance more specifically projects identified as basic research storage technology or without private sector investment had the highest performance with an acceptable level of statistical significance third dea can provide unique information such as results of returns to scale and slack analysis which cannot be gleaned from parametric methods as time went on the decreasing returns to scale drs ratio increased and the increasing returns to scale irs ratio decreased this means that the r d budget was used less and less effectively as time passed moreover among the three year project period the second year s r d budget was used most efficiently in each r d project this study can provide meaningful information to policy makers to enhance the performance of future r d projects and to promote hydrogen r d projects as well as advance the hydrogen economy

productivity and intermediate products a frontier approach abstract in recent years it has become popular to measure productivity using non parametric approaches however this has been done while ignoring intermediate products here we develop a non parametric productivity measure that explicitly incorporates such products

how do environmental regulation and environmental decentralization affect green total factor energy efficiency evidence from china abstract green development is critical for china s economic transformation enhancing green total factor energy efficiency hereafter gtfee is vital to emission reduction and to win win industrial development this study uses the panel data of 30 chinese provinces for the period 2005 2016 to investigate the relationship between environmental regulation and china s gtfee the spatial durbin model is employed to control for the possible spatial spillover effect a dynamic threshold panel model that can effectively address the endogeneity problem and regional heterogeneity is utilized to examine the potential non linear relationship between environmental regulation and gtfee under different conditions of environmental decentralization the estimation results indicate that there is a significant u shaped relationship between environmental regulation and china s gtfee with the further expansion of environmental decentralization the local government s autonomous choice of pollution control is improved the improvement of environmental decentralization can lead to negative moderating effect of environmental regulation on gtfee additionally the regression results of dynamic threshold model show that environmental decentralization can increase the negative influences of environmental regulation on gtfee interestingly the non linear impact of environmental regulation on gtfee is dependent on the specific type of environmental decentralization higher degree of environmental decentralization can lead to an increase in the restraining effect of environmental regulation on gtfee however an improvement in the decentralization of environmental supervision and environmental monitoring can increase the negative influences of environmental regulation on gtfee

welfare impact of higher maize prices when allowing for heterogeneous price increases in this paper we explore the short term welfare impact of higher maize prices on different regions and socioeconomic groups in kenya we find that approximately 80 of the population would be negatively affected by higher maize prices and that poor households would lose a larger proportion of their welfare than wealthy households more specifically rural landless households would lose the most whereas households with landholdings of five acres or more would gain we simulate a 25 increase in maize prices and find that rural poverty would increase by approximately 1 percentage point and urban poverty by 0 5 percentage points moreover the impact differs among regions poverty would increase by 3 percentage points in the rural parts of coast province whereas it would be almost unchanged in the rural parts of western province furthermore we relax the standard assumption that consumer and producer prices change in the same proportions and allow for heterogeneity in marketing margins among districts we demonstrate that relaxing this assumption substantially affects the results and that the results from previous research were thus likely biased

the relation between price and marginal cost in u s industry an examination of data on output and labor input reveals that some u s industries have marginal cost well below price the conclusion rests on the finding that cyclical variations in labor input are small compared with variations in output in booms firms produce substantially more output and sell it for a price that exceeds the costs of the added inputs the paper documents the disparity between price and marginal cost where marginal cost is estimated from annual variations in cost it considers a variety of explanations of the findings that are consistent with competition but none is found to be completely plausible

the impact of industrial structure efficiency on provincial industrial energy efficiency in china abstract regional disparity in terms of industrial energy efficiency is noticeable in china due to the unbalanced economic progress in past decades analyzing the provincial industrial energy efficiency and its influencing factors is of great significance to formulate differentiated policies to date the influence of many social economic factors on the industrial energy efficiency have been examined but the impact of the inter industry structure has almost been ignored in this paper the slacks based measure model incorporating undesirable output is applied to evaluate the industrial energy efficiency both at the provincial level and the sectoral level in china for the period 2010 to 2016 then industrial structure efficiency is introduced which reflects the inter industry structure and takes the sectoral level energy efficiency into consideration and the impact of the industrial structure efficiency on provincial industrial energy efficiency is tested by tobit regression model the results show that huge discrepancies of provincial industrial energy efficiency exist and the industrial structure efficiency is confirmed to be a determinative factor to the provincial industrial energy efficiency with the coefficient of 0 525 policy recommendations are provided for adjusting the provincial inter industry structure and improving the industrial energy efficiency

deriving the dea frontier for two stage processes data envelopment analysis dea is a method for measuring the efficiency of peer decision making units dmus recently dea has been extended to examine the efficiency of two stage processes where all the outputs from the first stage are intermediate measures that make up the inputs to the second stage the resulting two stage dea model provides not only an overall efficiency score for the entire process but as well yields an efficiency score for each of the individual stages due to the existence of intermediate measures the usual procedure of adjusting the inputs or outputs by the efficiency scores as in the standard dea approach does not necessarily yield a frontier projection the current paper develops an approach for determining the frontier points for inefficient dmus within the framework of two stage dea

malmquist index measurement for sustainability enhancement in chinese municipalities and provinces abstract this study discusses a use of dea environmental assessment in a time horizon we use a radial approach to examine a dynamic change of index measures related to china s regional development and industrial pollution prevention in applying the proposed assessment to a time series data we need to examine components that produce a shift of an efficiency frontier in a time horizon a unique feature of the proposed assessment is that it incorporates a framework of malmquist index to examine the frontier shift among multiple periods here the frontier shift indicates a progress potential on technology development and or managerial improvement among observed periods thus it is not an efficiency measure rather the measurement eliminates inefficiency by shifting an organization to an efficiency frontier in this study the index is conceptually separated into 6 subcomponents which are further disaggregated into 12 different elements 6 subcomponents 2 disposability concepts under natural and managerial disposability concepts the proposed index measurement needs to consider a possible occurrence of a frontier crossover among different periods because technology diffusion on production activities usually has a time lag until it becomes really effective methodologically this study conveys the message that dea is an approximation method so being not perfect therefore it is necessary for us to use several different approaches e g potential improvement by measuring a frontier shift and efficiency analysis to obtain reliable empirical evidence as an application this study examines the level of sustainability related to 30 municipalities and provinces in china from 2003 to 2014 the following six policy implications are obtained in this study first all municipalities and provinces have made a considerable progress on their economies and pollution prevention efforts second the effect of the frontier crossover is limited in china because they attain a high level of their potentials on economic development and pollution prevention of course this effort is within the chinese boundary not international because this study does not compare them with other industrial nations third china needs to allocate its resources to western provinces at a level that it has used for coastal developments fourth the government should reinforce efforts on environmental protection in central and southern regions fifth the government has focused on the sustainability development in urban municipalities and provinces and then has gradually shifted the policy influence toward rural areas finally different empirical results are confirmed by the potential analysis which consists of the malmquist index measurement and the efficiency analysis both approaches need to be examined for future planning on chinese regional development

will airline efficiency be affected by carbon neutral growth from 2020 strategy evidences from 29 international airlines abstract in this paper the impact of the carbon neutral growth from 2020 cng2020 strategy on airline efficiency is analyzed based on the predicted data of 29 international airlines during 2021 2023 the data is predicted through neural network following the principle of cng2020 strategy we calculate the emission limit for each airline two models network range adjusted measure with natural disposability and network range adjusted measure with managerial disposability are proposed to discuss the efficiency change when the cng2020 strategy is considered the following findings are gotten 1 under natural disposability the indices related with undesirable output have a larger role in deciding benchmarking airline 2 for most of the 29 airlines cng2020 strategy has little influence on their efficiency

evaluating the efficiency of industrial environmental regulation in china a three stage data envelopment analysis approach abstract environmental regulation is of great concern to international academics and policy makers previous studies often regarded environmental regulation as an influencing factor when calculating eco efficiency or energy efficiency more attention should be given to the efficiency of environmental regulation especially in industrial field according to exiting studies industrial environmental regulation efficiency iere may be influenced by external environmental factors to explore the influence and obtain an actual efficiency this paper calculated iere in china by using the panel data of 30 regions from 2011 to 2015 the 12th five year plan period through the three stage data envelopment analysis approach firstly the undesirable slacks based model method was used to calculate the original iere secondly the economic base industrial structure urbanization level and education level were taken as external environmental variables and the effect of external environmental factors and stochastic disturbance were excluded thirdly the actual iere can be calculated after adjusting input values the results showed that china s iere was underestimated due to the impact from external environmental factors moreover the iere was more influenced by pure technical efficiency than scale efficiency the iere of each region varied thus targeted policies should be formulated according to local conditions this research provided a new analytical method for calculating environmental regulation efficiency the method can be applied either in other countries or in other sectors

assessment of china transit and economic efficiencies in a modified value chains dea model abstract this study incorporates the concepts of undesirable intermediate intermediate input uncontrollable input and undesirable output to the value chains model chen and zhu 2004 thereby creating a modified value chains model to compute transit and economic efficiencies in 30 regions of china the modified value chains model forms a more general formulation to the value added chains in the utilization of the above concepts it also provides an optimal intermediate measure which differs from the independent two stage measure empirical evaluations indicate that large scale transit development in china s coastal area does not necessarily represent higher transit efficiency because in the coastal area there is a lack of significant positive relationships between transit and economic efficiency high economic efficiency does not contribute to greater transit efficiency the finding also suggests that by simultaneously decreasing the quantity in passenger and freight transport transit and economic efficiencies have greatly improved in most regions of china

marginal cost pricing when spot markets are complete the standard formulation of a spot market subject to uncertain excess demand uses a tatonnement process that restricts trade until the market clearing price is found here i present a model in which there is no restriction on trade during the process of the resolution of uncertainty about aggregate excess demand the idea is to enlarge the commodity space and define goods by the probability that they will sell in addition to other characteristics the probability of sale characteristic is the spot market analogue of the contingencies under which delivery will take place in the arrow debreu model a failure to distinguish goods by the probability of sale characteristic can lead to the rejection of the competitive paradigm even when everyone is a price taker and the allocation is efficient

green productivity growth in china s industrial economy abstract this paper uses a directional distance function ddf and the malmquist luenberger productivity index to estimate the changing patterns of green total factor productivity gtfp growth of 38 chinese industrial sectors during the period 1980 2010 unlike the measures of traditional total factor productivity tfp growth the ddf incorporates carbon dioxide emissions as an undesirable output directly into the production technology which credit sectors for simultaneously reducing their emissions and increasing their output our estimates of aggregate and sector level gtfp growth reveal that chinese industry is not yet on the path towards sustainable low carbon growth a dynamic panel data analysis of the determinants of gtfp across sectors is used to identify factors that might rectify this situation including state owned enterprise soe reform the growth of small private enterprises continued openness to foreign investment and higher spending on r d particularly in emission intensive sectors

productivity growth and environmental regulations accounting for undesirable outputs analysis of china s thirty provincial regions using the malmquist luenberger index this paper employs the malmquist luenberger ml productivity index to evaluate china s growth in total factor productivity tfp incorporating undesirable outputs during the period from 1989 to 2008 the ml productivity index and its components technical and efficiency changes are derived from the directional distance function which gives credit for an increase in good outputs and for reductions in undesirable outputs the average annual ml productivity growth accounting for undesirable outputs is 2 46 whereas the value of the traditional malmquist productivity index is 4 84 showing that the true tfp growth in china is overestimated if undesirable outputs are ignored we explore the strictness in enforcing environmental regulations and its impact on improvements in ml productivity the results show that the enforcement of environmental regulations in china is in general far below the levels achieved in the best performing regions and that the more stringent enforcement of environmental regulations would help to improve ml productivity growth in china

interprovincial two stage water resource utilization efficiency under environmental constraint and spatial spillover effects in china although existing studies have paid much attention to the measurement model of water resource utilization efficiency they have failed to consider the spatial spillover effect of some influencing factors of water resource utilization efficiency causing biased results this study measures the water resource utilization efficiency of 31 provincial administrative regions in china from 2001 to 2014 and the efficiency of each stage by adopting a slack based efficiency evaluation model based on the relaxation of two stages to consider undesirable output then this study employs a spatial durbin econometric model by considering spatial effect to analyze the influencing factors of the overall efficiency of water resource utilization by per capita water resources industrial water living water consumption per capita gross domestic product degree of opening to the outside world industrial structure technological progress and other aspects by comparison existing studies do not consider the spatial spillover effect this study estimates the direct and indirect effects of the influencing factors of water resource utilization efficiency to distinguish local and neighbors impacts of influencing factors of water resource utilization efficiency the results are as follows 1 first stage overall efficiency is significantly higher than second stage water resource utilization efficiency overall efficiency is close to second stage efficiency and second stage efficiency determines the overall effectiveness of water resource utilization 2 the spatial autocorrelation intensity of water resource utilization overall efficiency is significantly greater than zero and water resource utilization overall efficiency presents concentration distribution in the space for which the eastern coastal regions are high high type and the central and western regions are low low type 3 the overall efficiency of water resource utilization has spatial spillover effects and the region s overall efficiency is influenced by both region and neighborhood region 4 the direct and indirect effects of domestic water consumption degree of opening up and industrial structure are the primary significant influencing factors of overall efficiency of water resources in china the spatial spillover effects of domestic water consumption and industrial structure have a significant impact to improve water resource utilization efficiency the government and citizens should focus on such solutions as pollution reduction domestic water savings and transforming the industrial structure moreover china should consider the spatial effects of these influencing factors when government policies are designed

rising food prices and undernourishment a cross country inquiry households welfare in developing countries has been hit by dramatic food prices increases which occurred between 2005 and 2008 in this paper we adopt a partial equilibrium approach to analyze the short time effects of a staple food price increase on nutritional attainments as a measure of welfare the analysis consists of first approximating complete food demand systems and then performing household level micro simulations instead of focusing on a single country profile we provide a more complete snapshot by comparing the evidence through a cross country assessment made possible by the use of nationally representative household surveys comparability is assured by the adoption of the same methodological choices in the treatment of the micro data we find that food price spikes not only reduce the mean consumption of dietary energy but also worsen the distribution of food calories further deteriorating the nutritional status of populations we also discovered that access to agricultural land plays a significant role in ensuring adequate nutritional attainments in rural areas and surprisingly even in urban areas

development and application of the hicks moorsteen productivity index for the total factor productivity assessment of wastewater treatment plants abstract the assessment of the productivity change in wastewater treatment plants is essential to improve performance and reduce operational costs several indices are available to compute unit productivity however some assessments are more reliable than others in the absence of price data the malmquist productivity index is the most commonly applied but it does not maintain total factor productivity properties under variable returns to scale technology hence malmquist productivity index is not a suitable index to compute total factor productivity change in wastewater treatment plants the present study served to overcome such limitations by calculating for the first time total factor productivity changes in a sample of 204 spanish wastewater treatment plants using the hicks moorsteen productivity index it is a multiplicatively complete index which can be decomposed as several sub indices representing technical and efficiency changes therefore this study also investigated the drivers of total factor productivity change in wastewater treatment plants results showed a 5 4 total factor productivity decline per year from 2003 to 2008 in the plants analysed the primary driver in the reduction was efficiency change alternatively technical change improved during the five years of study the results of this study provide support for policymakers and managers in decision making processes and contribute to the improvement of technical and economic wastewater treatment plants performance in addition it is evidenced that wastewater treatment plants current dependence on external energy sources should be reduced to improve productivity and reduce costs to citizens who pay for wastewater treatment services

analyzing nutritional impacts of price and income related shocks in malawi simulating household entitlements to food the 2007 2008 food price crisis and the following global economic recession has temporarily increased the number of people to suffer from hunger while the impacts can be measured with precision only ex post for policy makers it is critical to get a sense of likely impacts ex ante in order to plan approaches to mitigate these impacts in this paper we adopt a very simple micro based simulation approach to analyze how changes in prices of specific food groups such as maize prices or prices for staple foods as well as how negative short term household level income shocks affect the entitlements to calorie consumption of individuals and how these changes affect overall food poverty we illustrate our approach using household survey data from malawi we find that food poverty is of serious concern with large within country variations we find that price shocks for staple foods have a considerable impact on food security with particularly strong effects on poor net food buyers in rural and urban areas this paper demonstrates that it is possible to estimate food security impacts of price and income shocks ex ante in a relatively straightforward fashion that can be done relatively quickly and that is suitable for cross country assessments of the likely impacts of shocks on food security and the design of appropriate response measures

implications of higher global food prices for poverty in low income countries in many poor countries the recent increases in prices of staple foods raise the real incomes of those selling food many of whom are relatively poor while hurting net food consumers many of whom are also relatively poor the impacts on poverty will certainly be very diverse but the average impact on poverty depends upon the balance between these two effects and can only be determined by looking at real world data results using household data for ten observations on nine low income countries show that the short run impacts of higher staple food prices on poverty differ considerably by commodity and by country but that poverty increases are much more frequent and larger than poverty reductions the recent large increases in food prices appear likely to raise overall poverty in low income countries substantially

measuring the efficiency of china s regional innovation systems application of network data envelopment analysis dea chen k and guan j measuring the efficiency of china s regional innovation systems application of network data envelopment analysis dea regional studies this study applies a relational network data analysis envelopment to the systematic evaluation of the innovation efficiency of china s regional innovation systems by decomposing the innovation process into the two connecting sub processes technological development and subsequent technological commercialization the results show that only one fifth of china s regional innovation systems are operating on the empirical best practice frontier during the whole process from technological development to commercialization furthermore it is found that substantial inconsistencies exist between technological development capacity and commercialization capacity in most regional innovation systems and that downstream commercialization capacity plays a more important role in the innovation performance of regional innovation systems chen k et guan j evaluer

eco efficiency analysis of power plants an extension of data envelopment analysis abstract in public discussion on environmental policy the notion of eco efficiency is often used the joint production of goods and undesirable outputs such as pollutants which may not be freely disposable without costs causes difficulties to measure the overall performance of the firm because of the absence of market prices for the undesirable outputs we are not able to estimate the environmental costs some of the measurement and evaluation difficulties can be overcome by employing data envelopment analysis dea as the efficiency measurement vehicle we propose the use of two different approaches in the first approach we start by decomposing the problem into two parts 1 the problem of measuring technical efficiency as the relation of the desirable outputs to the inputs and 2 the problem of measuring so called ecological efficiency as the relation of the desirable outputs to the undesirable outputs separately those two efficiency indicators are then combined in the second approach we treat pollutants as the inputs in the sense that we wish to increase desirable outputs and decrease pollutants and inputs the approaches are applied to the problem of measuring the efficiency of 24 power plants in a european country