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Registros recuperados: 70
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A TWO-STEP ESTIMATOR FOR A SPATIAL LAG MODEL OF COUNTS: THEORY, SMALL SAMPLE PERFORMANCE AND AN APPLICATION AgEcon
Lambert, Dayton M.; Brown, Jason P.; Florax, Raymond J.G.M..
Several spatial econometric approaches are available to model spatially correlated disturbances in count models, but there are at present no structurally consistent count models incorporating spatial lag autocorrelation. A two-step, limited information maximum likelihood estimator is proposed to fill this gap. The estimator is developed assuming a Poisson distribution, but can be extended to other count distributions. The small sample properties of the estimator are evaluated with Monte Carlo experiments. Simulation results suggest that the spatial lag count estimator achieves gains in terms of bias over the aspatial version as spatial lag autocorrelation and sample size increase. An empirical example deals with the location choice of single-unit start-up...
Tipo: Working or Discussion Paper Palavras-chave: Count model; Location choice; Manufacturing; Poisson; Spatial econometrics; Community/Rural/Urban Development; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies; C21; C25; D21; R12; R30.
Ano: 2010 URL: http://purl.umn.edu/59780
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Alert at Maradi: Preventing Food Crises in West Africa by Using Price Signals AgEcon
Araujo, Claudio; Araujo-Bonjean, Catherine; Brunelin, Stephanie.
The aim of this paper is to exploit grain price data to detect the warning signs of looming food crises in Mali, Burkina Faso and Niger. Firstly we identify which markets play a leading role at the national and regional level. The second step consists of identifying crisis periods and characterizing price movements during the period proceeding a crisis. This analysis leads to the identification of early warning indicators whose relevance is tested using panel data qualitative choice models. The results show that monitoring price movements on "leading markets" during crucial periods of the year can help in forecasting future crises.
Tipo: Conference Paper or Presentation Palavras-chave: Food security; Africa; Niger; Early warning systems; Discrete choice panel model; Food Security and Poverty; Q18; C25; D40; O18.
Ano: 2011 URL: http://purl.umn.edu/114226
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An Analysis of Demand Elasticities for Fluid Milk Products in the U.S. AgEcon
Davis, Christopher G.; Blayney, Donald P.; Cooper, Joseph C.; Yen, Steven T..
This study examines retail fluid milk products purchase data from Nielsen 2005 home scan data. The demand for seven categories of fluid milk products were estimated: whole milk, whole flavored milk, reduced fat milk, flavored reduced fat milk, buttermilk, canned milk and all other fluid milk products. Analyses of the purchases of seven fluid milk categories based on the Nielsen 2005 home scan retail data are used to determine the roles marital status, age, race, education, female employment status and location play in the empirical estimations of aggregate demand elasticities. To derive the demand elasticities, a censored translog demand system is used. The results reveal that price and income are the main determinants of demand for fluid milk products...
Tipo: Conference Paper or Presentation Palavras-chave: Nielsen home scan retail data; Milk demand; Elasticities; Fluid milk; Reduced fat milk; Whole milk; Flavored milk; Canned milk; Buttermilk; Non-linear AIDS; Censored translog demand system; Consumer/Household Economics; Demand and Price Analysis; C25; D12; Q11.
Ano: 2009 URL: http://purl.umn.edu/51791
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An Information-Theoretic Approach to Modeling Binary Choices: Estimating Willingness to Pay for Recreation Site Attributes AgEcon
Henry-Osorio, Miguel; Mittelhammer, Ronald C..
Information-Theoretic Econometrics
Tipo: Presentation Palavras-chave: Minimum power divergence; Cressie-Read statistics; Contingent valuation; Empirical likelihood; Discrete choice; Binary response models; Environmental Economics and Policy; Research Methods/ Statistical Methods; C13; C14; C25; Q51.
Ano: 2012 URL: http://purl.umn.edu/123432
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An Ordinal Regression Model using Dealer Satisfaction Data AgEcon
Staus, Alexander.
This article analyses dealer satisfaction data in the agricultural technology market in Germany. The dealers could rate their suppliers in the ’overall satisfaction’ and in 38 questions which can be summarized in 8 dimensions. An ordinal regression model which is also known as the proportional odds model is used to analyse the ordinal scaled rating of the dealers. The ordinal regression model is a well examined method in econometric theory, but many authors prefer using a linear regression model due to better interpretation, even the assumptions of a linear regression do not fit the data. Since the estimated coefficients of an ordinal regression model can not be properly interpreted we show other methods for a better insight of the relationship of the...
Tipo: Working or Discussion Paper Palavras-chave: Keywords: ordinal regression; Dealer satisfaction; Interpretation; Agricultural and Food Policy; Marketing; C25; C51; Q13.
Ano: 2007 URL: http://purl.umn.edu/98632
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Analyzing Landowner Demand for Wildlife and Forest Management Information AgEcon
Munn, Ian A.; Hussain, Anwar; West, Ben; Grado, Stephen C.; Jones, W. Daryl.
Determining appropriate topics and target audiences is essential to design effective educational outreach programs. Based on landowner responses to a mail survey, we determined both the importance and the availability of wildlife and forest management information topics to Mississippi landowners. Combining this information clearly identified the appropriate subject matter for outreach programs-topics important to landowners and for which information was relatively unavailable. The importance of wildlife and forest management information relative to its availability depended on the region, land use patterns, and landowner characteristics, thus demonstrating which segments of the population should be targeted to maximize program impact.
Tipo: Journal Article Palavras-chave: Complementary log-log link; Landowner information needs; Odds ratio; Ordinal regression; Outreach program budget; Land Economics/Use; Resource /Energy Economics and Policy; C25; Q16; Q23; Q26.
Ano: 2007 URL: http://purl.umn.edu/6059
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BUCHBESPRECHUNG: BECKMANN, V. (2000): TRANSAKTIONSKOSTEN UND INSTITUTIONELLE WAHL IN DER LANDWIRTSCHAFT : ZWISCHEN MARKT, HIERARCHIE UND KOOPERATION AgEcon
Weingarten, Peter.
This paper reviews the publication by BECKMANN, V. (2000): Transaktionskosten und institutionelle Wahl in der Landwirtschaft : Zwischen Markt, Hierarchie und Kooperation [Transaction costs and institutional choice in agriculture : Between market, hierarchy and co-operation].
Tipo: Working or Discussion Paper Palavras-chave: Transaction cost; Institution; Farm organisation; Agriculture; Labour organisation; Farm Management; L14; Q12; C25.
Ano: 2000 URL: http://purl.umn.edu/14933
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Can Co-Management Improve the Governance of A Common- Pool Resource? Lessons From A Framed Field Experiment in A Marine Protected Area in the Colombian Caribbean AgEcon
Moreno-Sanchez, Rocio del Pilar; Maldonado, Jorge Higinio.
Complexities associated with the management of common pool resources (CPR) threaten governance at some marine protected areas (MPA). In this paper, using economic experimental games (EEG), we investigate the effects of both external regulation and the complementarities between internal regulation and non-coercive authority intervention—what we call co-management—on fishermen’s extraction decisions. We perform EEG with fishermen inhabiting the influence zone of an MPA in the Colombian Caribbean. The results show that co- management exhibits the best results, both in terms of resource sustainability and reduction in extraction, highlighting the importance of strategies that recognize communities as key actors in the decision-making process for the...
Tipo: Working or Discussion Paper Palavras-chave: Common-pool resources; Governance; Co-management; Experimental economic games; Fisheries; Latin America.; Environmental Economics and Policy; C93; C72; D02; D70; Q01; Q22; Q28; C23; C25.
Ano: 2009 URL: http://purl.umn.edu/60731
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Characteristics of Organic Food Shoppers AgEcon
Zepeda, Lydia; Li, Jinghan.
Data from a national survey of food shoppers are analyzed by probit and ordered probit models that incorporate elements of Lancaster's product attribute model and Weinstein's precaution adoption process. The models are used to investigate the characteristics of organic and non-organic food shoppers. Where one shops, food beliefs and food knowledge have the largest significant impact on the probability that shoppers buy organic food. Among the demographic characteristics, only the lack of religious affiliation, higher education, and youth are significant explanatory variables.
Tipo: Journal Article Palavras-chave: Consumer decision making; Consumer profiles; Organic food; Product attributes; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; C25; D12; M31.
Ano: 2007 URL: http://purl.umn.edu/6624
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Community Pressure and Clean Technology in the Informal Sector: An Econometric Analysis of the Adoption of Propane by Traditional Mexican Brickmakers AgEcon
Blackman, Allen; Bannister, Geoffrey J..
In many developing countries the informal sector, comprised of low-technology unlicensed micro-enterprises, is a major source of pollution. Environmental management in this sector is exceptionally challenging. Though clean technologies offer a means of mitigating the problem, to our knowledge there has been no rigorous empirical research on why informal (or even small-scale) firms do and do not adopt them. As a first step towards filling this gap, this paper presents the results of an econometric analysis of the diffusion of propane among informal 'traditional' brickmakers in Cd. Juárez, Mexico--a leading source of air pollution owing to their reliance on cheap, highly polluting fuels such as used tires and scrap wood. The two key policy implications of...
Tipo: Working or Discussion Paper Palavras-chave: Environment; Community pressure; Clean technology; Informal sector; Technology adoption; Brickmaking; Mexico; Environmental Economics and Policy; O17; O22; O33; Q25; C25; L61.
Ano: 1998 URL: http://purl.umn.edu/10529
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Complements and Meat Demand in the U.S. AgEcon
Davis, Christopher G.; Stefanova, Stela; Hahn, William F.; Yen, Steven T..
In this study we estimated the price elasticities among meats, vegetables, grains, and potatoes and the impact that different levels of income have on the demand for these commodities. The 2005 Nielsen retail home scan data were used to construct a censored demand system of 14 equations. Results revealed that the uncompensated cross-price elasticities for both low and high-incomes suggest both substitution and complement relationships, while the compensated price elasticities are dominated primarily by substitution relationships. Our findings also revealed that expenditure elasticities among both low and high-income households differ for most commodities.
Tipo: Conference Paper or Presentation Palavras-chave: Censored dependent variables; Meats; Poultry; Fish; Vegetables; Sample selection model; Two-step estimation; Demand and Price Analysis; Livestock Production/Industries; C25; D12; Q11.
Ano: 2008 URL: http://purl.umn.edu/6406
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Consumer Acceptance of GM Applications in the Pork Production Chain: A Choice Modelling Approach AgEcon
Novoselova, Tatiana A.; van der Lans, Ivo A.C.M.; Meuwissen, Miranda P.M.; Huirne, Ruud B.M..
This study evaluates consumer acceptance of different GM applications in the pork production chain. In general, results indicate that consumers prefer conventional pork over pork for which genetic modification was applied. However, the negative impact of the GM applications is compensated by improvements in quality, increased animal welfare, a lower impact on the environment, less residues and a price discount. Of these benefits, increased animal welfare has the most positive effect on consumer choices. With substantial monetary compensation and presence of various benefits the consumers will attach higher utility to the GM pork than to the conventional pork. The amount of monetary compensation is dependent on the type of GM application.
Tipo: Conference Paper or Presentation Palavras-chave: Consumer acceptance; Genetic modification; Choice modelling; Consumer/Household Economics; C25; D12; Q13.
Ano: 2005 URL: http://purl.umn.edu/24527
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CONSUMER INTENTIONS OF BUYING POULTRY MEAT UNDER PERCEIVED BIOLOGICAL, CHEMICAL OR TECHNOLOGICAL RISK IN FINLAND AgEcon
Heikkila, Jaakko; Pouta, Eija; Forsman-Hugg, Sari; Makela, Johanna.
The study focuses on various types of food safety risks: biological (zoonoses), chemical (chemical treatment of the meat) and technological (use of genetically modified feed). The emphasis was on how the perceived risks affect the purchase intentions in the case of broiler meat. In the case of each risk products the attitude-level variables had importance in explaining the buying intentions. The heterogeneity of the respondents regarding the purchase intentions of risk products was analysed by latent class logistic regression that included all three risk products. About 60% of the respondents belonged to the group of risk avoiders in which the purchase intention of risk food was significantly lower than in the second group of risk neutrals in which 64% of...
Tipo: Conference Paper or Presentation Palavras-chave: Broiler; Consumer behaviour; Risk; Food safety; Consumer heterogeneity; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; C25; D12; Q18.
Ano: 2010 URL: http://purl.umn.edu/116403
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Consumers' Willingness to Pay for Genetically Modified Foods in Kenya AgEcon
Kimenju, Simon Chege; De Groote, Hugo.
A survey of 600 consumers was conducted in Nairobi to determine attitudes and willingness to pay (WTP) for GM maize meal. WTP was estimated using the double-bounded logit model. Overall, 38% are aware of GM crops. Most consumers believe in the technology's positive impacts, but are concerned about environmental and health risks. Majority (68%) would buy GM maize meal at the price of their favourite maize meal brand. The mean WTP for GM maize meal is KShs 58 for a 2kg packet, a premium of 13.7 % over mean average price of favourite brands. WTP is influenced more by subjective than socioeconomic characteristics.
Tipo: Conference Paper or Presentation Palavras-chave: GMO; Biotechnology; Consumer; Africa; Maize; Consumer/Household Economics; D12; C25; Q16.
Ano: 2005 URL: http://purl.umn.edu/24504
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CONSUMERS’ WILLINGNESS TO PAY FOR MILK QUALITY ATTRIBUTES AgEcon
Berges, Miriam E.; Casellas, Karina S..
This study was financed by Project ALCUE-FOOD. Work package 3 (INTA, COPAL, EMBRAPA, CIRAD, CECYT, INIA, INAP). “From European fork to Latin American farm”: an innovative networking platform for EU–LAC partnerships in food quality and safety R&D
Tipo: Conference Paper or Presentation Palavras-chave: Willingness to pay; Quality attributes; Fluid milk; Contingent Valuation; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Research Methods/ Statistical Methods; C25; D13.
Ano: 2009 URL: http://purl.umn.edu/51746
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Consumer's WTP for Environment-Friendly Production Methods and Collective Reputation for Place of Origin: The Case of Val di Gresta's Carrots AgEcon
Scarpa, Riccardo; Thiene, Mara; Marangon, Francesco.
This paper investigates preferences for various environment-friendly production system for carrots using discretechoice multi-attribute stated-preference data amongst buyers and explore the effect of collective reputations from growers of an Alpine valley known to be completely dedicated to organic production. Results show that buyers distinctly recognize only organic production as a production system different from the conventional one, and there is some evidence of recognition of collective reputation. As well as for marginal utility of income, substantial unobserved heterogeneity is found for many skin imperfections, origin from the organic Alpine valley and the organic production methods. The implied sample distributions of WTP for each of these random...
Tipo: Conference Paper or Presentation Palavras-chave: Choice modelling; Mixed logit; Organic products; Marginal utility of income; Unobserved taste heterogeneity; Status-quo bias; Heteroskedasticity; Crop Production/Industries; Environmental Economics and Policy; C15; C25; Q13; Q18.
Ano: 2006 URL: http://purl.umn.edu/25637
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Cow-Calf Producer Risk Preference Impacts on Retained Ownership Strategies AgEcon
Pope, Kelsey Frasier; Schroeder, Ted C.; Langemeier, Michael R.; Herbel, Kevin L..
Considerable efforts have been made to provide cow-calf producers with information to help them make informed decisions about adding value to calves. Despite demonstrated market incentives to retain calves, many producers still sell right after weaning. We postulate this observed behavior is related to producer risk aversion. Our study concludes risk aversion is an important factor affecting calf retention as the most risk-averse producers have more than a 60% probability of selling calves at weaning and the most risk tolerant have less than a 20% probability of selling at weaning.
Tipo: Journal Article Palavras-chave: Cow-calf producers; Ordered probit; Retained ownership; Risk aversion; Farm Management; Marketing; Q13; C25; D18.
Ano: 2011 URL: http://purl.umn.edu/117953
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Demand for Private Marketing Expertise by Organic Farmers: A Quantile Analysis Based on Counts AgEcon
Lohr, Luanne; Park, Timothy A..
We study the demand by organic farmers for technical advice using a quantile regression for the demand of organic farmers for consultations with private information providers. There is substantial heterogeneity in the impact of critical explanatory variables on consultations of organic farmer. Larger farm size has a positive effect on contacts, but the effect is absent for the highest number of consultations. Internet use has a positive marginal effect on visits to private information providers across each quantile, suggesting that expanded efforts to deliver programs through web-based resources are a useful investment for information providers.
Tipo: Article Palavras-chave: Organic farming; Technical assistance; Quantile regression model; Count data; Internet access; Marketing; C25; Q12; Q13; Q16.
Ano: 2012 URL: http://purl.umn.edu/123784
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DETERMINANTS OF THE DEMAND FOR ORGANIC AND CONVENTIONAL FRESH MILK IN GERMANY– AN ECONOMETRIC ANALYSIS AgEcon
Schrock, Rebecca.
An increasing number of studies deals with consumer decisions regarding organic food, but only a few provide quantitative estimates of price and income elasticities. This paper contributes to the existing literature by providing own-price elasticity estimates as well as an analysis of the sociodemographic determinants of demand for organic milk. The analysis is based on the GfK Consumer Scan Scanner panel dataset on food purchases of German households covering a sample period of four years from 2004 to 2007. A two-step estimation procedure is applied. First, a probit regression examines which household characteristics affect the probability to buy organic milk. Second, a fixed-effects panel regression determines factors that have an impact on the quantity...
Tipo: Conference Paper or Presentation Palavras-chave: Organic milk; Household Panel; Probit Analysis; Fixed-Effects-Panel Analysis; Price elasticity; Private-labels; Germany; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; C23; C24; C25; D12; M31; Q11.
Ano: 2010 URL: http://purl.umn.edu/116387
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Determinants of the Extension of Part-time Farming--Results from a Probit Approach AgEcon
Harsche, Johannes.
This paper presents a Probit model explaining the employment decisions of farmers located in the German State of Hesse. The model is based on a cross-section analysis including data from 74 Hessian farmers. It indicates empirically a strong impact from wages on employment decisions of farmers. It also verifies the importance of the personal type of entrepreneur for their working behaviour. Finally, we can conclude that, regarding working behaviour, farmers react to signals from the labour market conditions as well as to the structural transformation process in the agricultural sector.
Tipo: Conference Paper or Presentation Palavras-chave: Probit models; Part-time farming; Microeconomic household models; Employment behaviour; Labour markets; Farm Management; C25; D13; Q12; J22.
Ano: 2005 URL: http://purl.umn.edu/24491
Registros recuperados: 70
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