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Registros recuperados: 64
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Black-Box Frontiers and Implications for Development Policy – Theoretical Considerations AgEcon
Sauer, Johannes; Frohberg, Klaus; Hockmann, Heinrich.
The availability of efficiency estimation software – freely distributed via the internet and relatively easy to use – recently inflated the number of corresponding applications. The resulting efficiency estimates are used without a critical assessment with respect to the literature on theoretical consistency, flexibility and the choice of the appropriate functional form. The robustness of policy suggestions based on inferences from efficiency measures nevertheless crucially depends on theoretically well-founded estimates. This paper addresses stochastic efficiency measurement by critically reviewing the theoretical consistency of recently published technical efficiency estimates with respect to economic development. The results confirm the need for a...
Tipo: Working or Discussion Paper Palavras-chave: International Development; Research and Development/Tech Change/Emerging Technologies.
Ano: 2004 URL: http://purl.umn.edu/18772
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MONOTONICITY AND CURVATURE - A BOOTSTRAPPING APPROACH AgEcon
Sauer, Johannes.
This research contributes to the ongoing discussion on functional flexibility and theoretical consistency by comparing the empirical performance of two second order flexible functional forms - the Symmetric Generalized McFadden and the Transcendental Logarithmic. It proposes an estimation procedure to enhance the domain of applicability for the Translog by a combination of matrix decomposition, classical non-linear estimation techniques as well as bootstrapping based resampling. The validity of the proposed procedure is exemplified by applying it to a sample of small-scale farmers. The results show that the range of theoretical consistency can be crucially enhanced for the Translog functional form by maintaining its flexibility and statistical...
Tipo: Conference Paper or Presentation Palavras-chave: Econometric Modeling; Flexible Functional Forms; Theoretical Consistency; Bootstrapping; Financial Economics.
Ano: 2006 URL: http://purl.umn.edu/14948
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On Self Selection in PES Schemes AgEcon
Russell, Noel P.; Sauer, Johannes.
This paper investigates participation by farmers in the UK Environmental Stewardship Schemes and how decisions to join the scheme are related to land productivity levels on the one hand and ecological conservation on the other. In particular the paper will explore the extent to which the self selection of farmers onto the scheme influences likely scheme performance. The first part of the paper analyses a theoretical model for the provision of ecological services where an uninformed government agency offers to contracts to well-informed farmers. The results of this analysis indicate the extent to which self selection by farmers can impair the efficiency of PES schemes and point to specific strategies that might be used by a government agency to mitigate...
Tipo: Conference Paper or Presentation Palavras-chave: Payment for Environmental Services; Self-Selection in PES Schemes; UK Environmental Stewardship Schemes; Beneficial Selection.; Environmental Economics and Policy; Farm Management; Land Economics/Use.
Ano: 2011 URL: http://purl.umn.edu/103697
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Soil Fertility Management And Maize Productivity In Malawi: Curvature Correct Efficiency Modeling And Simulation AgEcon
Tchale, Hardwick; Sauer, Johannes.
We assess the level and determinants of relative technical efficiency of maize-based smallholder farmers using a translog stochastic frontier (TL) model and a symmetric generalized Barnett production function (SGB), both of which are tested for economic regularity conditions. In addition, we conduct a bootstrapping procedure in order to infer about the probability distributions and significance of the relative efficiency values for farmers using different soil fertility management options. The results indicate that higher levels of relative technical efficiency obtain when farmers use integrated soil fertility options compared to the use of chemical fertilizer only. The consistency of the results across the two models increase the robustness of the...
Tipo: Conference Paper or Presentation Palavras-chave: Smallholder agriculture; Relative technical efficiency; Soil fertility management; Malawi; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Labor and Human Capital; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/52077
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THE MARGINAL COST OF AGRI-ENVIRONMENTAL SERVICES AgEcon
Sauer, Johannes; Wossink, Ada.
A3_2
Tipo: Conference Paper or Presentation Palavras-chave: Agri-environmental services; Bio-economic modelling; Economies of scale and scope; Environmental Economics and Policy; Land Economics/Use; Research Methods/ Statistical Methods; Q18; Q57; Q58.
Ano: 2010 URL: http://purl.umn.edu/93939
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Marketed Outputs and Non-Marketed Outputs: The Marginal Costs of Producing Ecosystem Services AgEcon
Wossink, Ada; Sauer, Johannes.
We provide a new approach for assessing the cost of marginal ecosystem changes and the effectiveness of green payment schemes. The approach is based on a theoretical and empirical analysis of the bio-economic production interactions between marketed outputs and non-marketed ecosystem services at the micro level. To frame the economic nature of the problem, we employ a generalized joint production model in combination with cost minimization. The generalized joint production framework allows for the consideration of complementary, supplementary and competitive relationships between agricultural production and non-marketed ecosystem services generation and avoids double counting. From this theoretical model we distinguish three theoretical cases depending on...
Tipo: Conference Paper or Presentation Palavras-chave: Ecosystem services; Green payments; Bio-economic modelling; Economies of scale and scope; Program evaluation.; Environmental Economics and Policy; Land Economics/Use; Q18; Q57; Q58..
Ano: 2010 URL: http://purl.umn.edu/60804
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The dimensions of social capital and rural development: evidence from Water Communities in the Republic of Macedonia AgEcon
Gorton, Matthew; Sauer, Johannes; Peshevski, Mile; Bosev, Dane; Shekerinov, Darko; Quarrie, Steve.
Drawing on Nahapiet and Ghoshal's (1998) distinction between the structural, relational, and cognitive dimensions of social capital, this paper analyses the performance of Water Communities (WCs) in the Bregalnica region of the Republic of Macedonia. WCs are farmer-managed local irrigation systems which are critical to livelihoods in Bregalnica. Data on the performance of the WCs and role of social capital was collected via in-depth interviews and a farm survey (n=249) of both members and non-members. Results highlight the importance of social capital in explaining the decision to join a WC, the satisfaction of members with their WC, and payment behaviour.
Tipo: Conference Paper or Presentation Palavras-chave: Social capital; Rural development; Irrigation; Rural development; Community/Rural/Urban Development; O13; P32; Q15.
Ano: 2010 URL: http://purl.umn.edu/94916
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Innovation, Integration and Product Proliferation - Empirical Evidence for the Agri-Food Industry AgEcon
Karantininis, Kostas; Sauer, Johannes; Furtan, William Hartley.
While mergers, both horizontal and vertical, have been shaping the landscape of the agri-food industry in Europe, the implications of the changing market structure on the level of innovation has not been studied yet. In this paper we deal with the link between innovation and market structure using the empirical example of the Danish agri-food industry. The purpose of this paper is two-fold. First we test for the importance of vertical integration on innovation. While there exist several studies on this linkage, to our knowledge, this is the first that deals with the agri-food industry. Secondly, we examine both product proliferation and innovation. To our knowledge, there are no other similar studies that examine both aspects using the same data set. We...
Tipo: Conference Paper or Presentation Palavras-chave: Innovation; Vertical Integration; Product Proliferation; Agribusiness; Agribusiness.
Ano: 2008 URL: http://purl.umn.edu/6074
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RURAL WATER SUPPLIERS AND EFFICIENCY - EMPIRICAL EVIDENCE FROM EAST AND WEST GERMANY AgEcon
Sauer, Johannes.
ABSTRACT This discussion paper attempts the investigation of inefficiency with respect to water suppliers in rural areas of East and West Germany. This is done by using a nonradial measure of input-specific allocative inefficiency based on the demand system derived from a flexible cost function for the variable inputs labour, energy and chemicals. Distributional dependency with respect to the composed error term is reduced. The cost structure is modelled by applying a modified symmetric generalized McFadden functional form and the imposition of concavity restrictions as required by economic theory. Data on 47 rural water suppliers was collected by a written survey in 2002/2003. The applied second order flexible functional form performs well in the...
Tipo: Working or Discussion Paper Palavras-chave: Rural water supply; Flexible functional form; Input-specific allocative efficiency; Ländliche Wasserversorgung; Flexible funktionale Form; Inputspezifische allokative Effizienz; Resource /Energy Economics and Policy; C31; D24; Q25.
Ano: 2004 URL: http://purl.umn.edu/14866
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On The Empirics of Ecosystem Services Schemes: Technology, Risk and Compliance AgEcon
Sauer, Johannes; Walsh, John.
The overall aim of this study is to empirically investigate the cost structure of a management agreement type agri-environmental instrument and to identify factors for cost variation over space and time. We control for the actual level of compliance by using compliance weighted average scheme cost ratios. Beside technological and economic performance measures, we also incorporate risk proxies. In addition, we consider unobserved heterogeneity or path dependency with respect to unknown administrative, spatial and farm specific factors. Hence, we try to disentangle random and fixed scheme cost effects by applying a bootstrapped mixed-effects regression approach using the empirical case of the Environmental Stewardship Scheme in the UK. Regional and sectoral...
Tipo: Conference Paper or Presentation Palavras-chave: Environmental Policy Ecosystem Services Risk Mixed-Effects Panel Regression Environmental Economics and Policy Public Economics Resource /Energy Economics and Policy Q18; Q57; Q58.
Ano: 2010 URL: http://purl.umn.edu/61147
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The Need for Theoretically Consistent Efficiency Frontiers AgEcon
Sauer, Johannes; Hockmann, Heinrich.
The availability of efficiency estimation software –freely distributed via the internet and relatively easy to use –recently inflated the number of corresponding applications. The resulting efficiency estimates are often used without a critical assessment with respect to the literature on theoretical consistency, flexibility and the choice of the appropriate functional form. The robustness of policy suggestions based on inferences from efficiency measures nevertheless crucially depends on theoretically well-founded estimates. This paper addresses stochastic efficiency measurement by critically reviewing the theoretical consistency of recently published technical efficiency estimates. The results confirm the need for a posteriori checking the regularity of...
Tipo: Conference Paper or Presentation Palavras-chave: Functional form; Stochastic efficiency analysis; Theoretical consistency; Research and Development/Tech Change/Emerging Technologies; C51; D24; Q12.
Ano: 2005 URL: http://purl.umn.edu/24497
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Determinants for fallowing land: The case of Kosovo AgEcon
Sauer, Johannes; Davidova, Sophia; Latruffe, Laure.
The key question of this paper is why farmers in Kosovo leave land fallow when the total land of their farms is rather small and households are rather large. In order to elicit some barriers to land utilisation in Kosovo, the paper is based on a comprehensive survey carried out in 2005 investigating agricultural households’ perceptions of production and market conditions, and employs several households and farm characteristics to empirically approximate the significance of different factors for leaving land fallow and not using it for production purposes. Three different econometric models are used expected to fit the data distribution. All estimated model specifications show a statistical significance at a satisfactory level and no severe signs of...
Tipo: Conference Paper or Presentation Palavras-chave: Fallow land decision; Kosovo; Tobit regression; Fractional response regression; Zero-inflated binomial regression; Land Economics/Use; Production Economics; Q12.
Ano: 2009 URL: http://purl.umn.edu/51626
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Distinguishing Different Industry Technologies and Localized Technical Change AgEcon
Morrison Paul, Catherine J.; Sauer, Johannes.
This contribution is based on the notion that different technologies are present in an industry. These different technologies result in differential “drivers” of economic performance depending on the kind of technology used by the individual firm. In a first step different technologies are empirically distinguished. Subsequently, the associated production patterns are approximated and the respective change over time is estimated. A latent class modelling approach is used to distinguish different technologies for a representative sample of E.U. dairy producers as an industry exhibiting significant structural changes and differences in production systems in the past decades. The production technology is modelled and evaluated by using the flexible functional...
Tipo: Conference Paper or Presentation Palavras-chave: Heterogenous Technologies; Transformation Function; Localized Technical Change; Production Economics; Q12; O33; C35.
Ano: 2010 URL: http://purl.umn.edu/91749
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Intensive versus Extensive Dairy Production Systems: Dairy States in the Eastern and Midwestern U.S. and Key Pasture Countries the E.U.: Determining the Competitive Edge AgEcon
Nehring, Richard F.; Sauer, Johannes; Gillespie, Jeffrey M.; Hallahan, Charles B..
In recent years, significant structural and production system changes have been noted in the U.S. and European Union, as well as increased interest in pasture-based dairy systems. Technical efficiency, returns to scale, and farm characteristics are compared by size and production system in traditional U.S. dairy states and E.U. countries.
Tipo: Conference Paper or Presentation Palavras-chave: U.S.; EU Countries; Dairy Systems; Technical Efficiency; Returns To Scale; Size; Technology; Land Prices; Production Economics; Q12.
Ano: 2011 URL: http://purl.umn.edu/98824
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Natural Disasters and Agriculture: Individual Risk Preferences towards Flooding AgEcon
Sauer, Johannes.
This study contributes to the understanding of behavioural responses to climate change induced extreme weather events. It suggest a microeconometric method for measuring flooding related risk preferences of affected individuals. The method is outlined using the empirical case of agricultural production in floodplains of the UK over 28 years. A quasi-experimental approach to measure differences in the risk attitudes of farmers located in high flooding risk areas versus farmers located in low flooding risk areas is followed. Changes in flooding risk related behaviour over time is analysed and marginal effects of different individual and disaster related characteristics for this behaviour are investigated. Beside a moments based risk estimation approach the...
Tipo: Conference Paper or Presentation Palavras-chave: Extreme Events; Risk; Agriculture; Natural Experiments; Behavioural Adaptation; Extreme Ereignisse; Risiko; Landwirtschaft; Natürliche Experimente; Verhaltensadaption; Agribusiness; Agricultural and Food Policy; Q12; C54.
Ano: 2011 URL: http://purl.umn.edu/114497
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ORGANIC FARMING IN DENMARK-PRODUCTIVITY, TECHNICAL CHANGE AND MARKET EXIT AgEcon
Sauer, Johannes; Park, Timothy A.; Graversen, Jesper T..
This paper attempts to quantitatively measure the change in the productivity of Danish organic farming in recent years. Based on a translog production frontier framework the technical and scale efficiency on farm level is analysed by following a time trends as well as a general index model specification. We further try to analyse the significance of subsidies for promoting long term growth in organic production by estimating a bootstrapped bivariate probit model with respect to factors influencing the probability of organic market exit. The results revealed significant differencies in the organic farms' technical efficiencies, no significant total factor productivity growth and even a slightly negative rate of...
Tipo: Conference Paper or Presentation Palavras-chave: Organic Farming; Total Factor Productivity; Market Exit; Agribusiness; Productivity Analysis.
Ano: 2007 URL: http://purl.umn.edu/7618
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A metafrontier approach to measuring technical efficiencies across the UK dairy sector AgEcon
Barnes, Andrew Peter; Revoredo-Giha, Cesar; Sauer, Johannes.
A regional approach is applied to measure technical efficiencies on dairy farms which employs the deterministic metafrontier approach. We construct six super regions for the UK, i.e. Eastern, Western, Northern England, Wales, Scotland and Northern Ireland. Data are collected through three different administrative systems, all be it under the same FADN guidance. We find for dairy farming comparative indicators of performance in all three data sets. The stochastic frontier approach is applied to construct 6 regional frontiers and a pooled (UK) dataset for comparison. A likelihood ratio test rejects the null hypothesis that these regions operate under a common frontier which may indicate bias in previous attempts to measure dairying efficiency at the country...
Tipo: Conference Paper or Presentation Palavras-chave: Stochastic Production Frontiers; Metafrontiers; UK Farm Account Data; Dairy farming.; Agricultural and Food Policy; Q12; D24; C23; C51.
Ano: 2011 URL: http://purl.umn.edu/99369
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Marketing, Co-operatives and Price Heterogeneity: Evidence from the CIS Dairy Sector AgEcon
Sauer, Johannes; Gorton, Matthew; White, John.
Drawing on survey data, this paper identifies the determinants of variations in farm gate milk prices for three CIS countries (Armenia, Moldova and Ukraine). We apply a multi-level modeling approach, specifically a bootstrapped and selectivity bias corrected mixed-effects linear regression model. The analysis suggests three main strategies for farmers to improve the price received for their output: consolidation, cooperation and stable supply chain relationships. While selling through a marketing cooperative has a significant and positive effect on farm gate milk prices, the majority of non-members are reluctant to join. The size of dairy operations, trust and contracting also impact positively on the prices received by farmers. Policy implications are...
Tipo: Conference Paper or Presentation Palavras-chave: Price heterogeneity; Milk; Cooperatives; Armenia; Moldova; Ukraine; Marketing; O13; P32; Q13.
Ano: 2011 URL: http://purl.umn.edu/108938
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TECHNOLOGIES AND LOCALIZED TECHNICAL CHANGE AgEcon
Morrison Paul, Catherine J.; Sauer, Johannes.
D2_3
Tipo: Conference Paper or Presentation Palavras-chave: Heterogenous Technologies; Transformation Function; Localized Technical Change; Production Economics; Research Methods/ Statistical Methods; Q12; O33; C35.
Ano: 2010 URL: http://purl.umn.edu/93963
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Romanian Maize - Distorted Prices and Producer Efficiency AgEcon
Sauer, Johannes; Balint, Borbala.
This research aims at shedding empirical light on the relative efficiency of small-scale maize producers in Romania. Farmers in transition countries still face heavily distorted price systems resulting from imperfect market conditions and socioeconomic and institutional constraints. To capture such distortions we formulate a stochastic shadow-cost frontier model to investigate the systematic input-specific allocative inefficiency. We further adjust the underlying cost frontier by incorporating shadow price corrections and subsequently reveal evidence on farm specific technical inefficiency. Different models are estimated due to the imposition of curvature correctness and the effects on the individual efficiency estimates are shown. The empirical results...
Tipo: Conference Paper or Presentation Palavras-chave: Efficiency; Shadow Cost Frontier; Functional Consistency; Maize; Romania; Crop Production/Industries; C40; D24; O33.
Ano: 2006 URL: http://purl.umn.edu/25597
Registros recuperados: 64
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