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Registros recuperados: 28
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Adopción de tecnología de distribución y control del agua en las Comunidades de Regantes de la Región de Murcia AgEcon
Alcon, Francisco; De Miguel, María Dolores; Burton, Michael P..
RESUMEN: En el presente trabajo se estudia el proceso de adopción de tecnología de distribución y control de agua que las Comunidades de Regantes de la Región de Murcia han llevado a cabo desde el año 1975 hasta 2005. Se analiza el tiempo que transcurre desde que se constituye la Comunidad de Regantes hasta que toma la decisión de adoptar utilizando Análisis de Duración. Se identifican como aceleradores del proceso de adopción la posesión de un pozo de apoyo, el empleo de un sistema tarifario variable en función del consumo, los efectos de las políticas de subvenciones a las obras de modernización y mejora de los regadíos y las sequías. SUMMARY: The present paper analyses the process of adopting water management and control technology in the irrigation...
Tipo: Journal Article Palavras-chave: Análisis de duración; Comunidad de regantes; Función de riesgo; Tecnología de riego; Irrigation community; Hazard function; Irrigation technology; Duration analysis; Agribusiness; Research and Development/Tech Change/Emerging Technologies; Q16; Q25; D71.
Ano: 2008 URL: http://purl.umn.edu/37190
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Optimisation and the selection of conservation contracts AgEcon
Hajkowicz, Stefan; Higgins, Andrew J.; Williams, Kristen; Faith, Daniel P.; Burton, Michael P..
This paper explores alternative techniques for the selection of conservation contracts under competitive tendering programs. Under these programs, purchasing decisions are often based on the benefits score and cost for proposed projects. The optimisation problem is to maximise the aggregate benefits without exceeding the budget. Because the budget rarely permits all projects to be funded, there is a binary choice problem, known in the operations research published work as a knapsack problem. The decision-maker must choose which projects are funded and which are not. Under some circumstances, the knapsack problem can be unsolvable because computational complexity increases exponentially with the number of projects. This paper explores the use of several...
Tipo: Journal Article Palavras-chave: Market based instruments; Environmental services auction; Environment benefits index; Conservation planning; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/118317
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Optimal replanting and cutting rule for coffee farmers in Vietnam AgEcon
Thang, Tran Cong; Burton, Michael P.; Brennan, Donna C..
This paper identifies the optimal cutting and replanting rule for coffee farmers in Vietnam. Some previous studies examined the optimal price at which to cut trees for coffee farmers in Vietnam but they have not investigated the relationship between the age of tree and the cutting point. Fixed-form optimization is applied to analyze a rule that links market coffee prices and age of tree with the cutting decision.
Tipo: Conference Paper or Presentation Palavras-chave: Coffee in Vietnam; Fixed-form optimization; Optimal cutting and replanting; Price fluctuation; Crop replacement; Farm Management.
Ano: 2009 URL: http://purl.umn.edu/47638
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ESTIMATING DETERMINANTS OF STUDENT EVALUATION SCORES TO IMPROVE TEACHING AgEcon
McCann, Laura M.J.; Burton, Michael P..
Student evaluations are used for both formative and summative assessment of teachers. This paper provides a method to make more effective use of these student evaluations by individual teachers. Data on three years of evaluations in two courses were used to develop regression models to explain overall effectiveness of teaching. The relative importance of explanatory variables changed with the course taught.
Tipo: Conference Paper or Presentation Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2001 URL: http://purl.umn.edu/20509
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Modelling the adoption of organic horticultural technology in the UK using Duration Analysis AgEcon
Burton, Michael P.; Rigby, Dan; Young, Trevor.
Duration Analysis, which allows the timing of an event to be explored in a dynamic framework, is used to model the adoption of organic horticultural technology in the UK. The influence of a range of economic and non-economic determinants is explored using discrete time models. The empirical results highlight the importance of gender, attitudes to the environment and information networks, as well as systematic effects that influence the adoption decision over the lifetime of the producer and over the survey period.
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/116172
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Explaining farmers’ monitoring of sustainability indicators: a bore-ing example for salinity in Western Australia AgEcon
Marsh, Sally P.; Burton, Michael P.; Pannell, David J..
Dryland salinity is one of the most pressing land management problems in Western Australia. A number of projects are in progress to provide a more comprehensive picture of the location and extent of potentially saline areas in the landscape. Associated with some of these projects, a large number of bores (piezometers) have been installed or are being installed throughout the agricultural area to provide information on depth to groundwater and changes in water levels over time. These bores provide information about whether and when the ground water will reach the surface, causing losses of agricultural production through salinisation of soils. Using data from the Jerramungup Land Conservation District (LCD) we explore factors influencing the behaviour of...
Tipo: Presentation Palavras-chave: Sustainability indicators; Environmental indicators; Resource monitoring; Economics of information; Hydrology; Dryland salinity; Western Australia; Farm Management; Land Economics/Use.
Ano: 2000 URL: http://purl.umn.edu/123702
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Estimating Urban Residential Water-Demand with Increasing Block Prices: The Case of Perth, Western Australia AgEcon
Xayavong, Vilaphonh; Burton, Michael P.; White, Benedict.
This study uses panel data at suburb level to estimates the elasticity water demands in Perth, Australia from 1995 to 2005. After deriving the consumer’s water demand under a non-linear budget constraint, we estimate the water demand model, which accounts for how water (and other purchased goods) is used to satisfy fundamental desires of the household. We have applied the specification of price that provided the correctly estimated marginal price from the block tariff structure, and employed a maximum likelihood estimation technique to tackle the endogeneity and heteroskedasticity issues. Our estimation of water demand price elasticities are slightly higher (more elastic) than previous study in Perth, but broadly in line with other estimates in the...
Tipo: Working or Discussion Paper Palavras-chave: Water demand; Water pricing; Block pricing; Water resource management; Household model; Resource /Energy Economics and Policy; Q21; Q25; Q23.
Ano: 2007 URL: http://purl.umn.edu/7061
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Determining the change in welfare estimates from introducing measurement error in non-linear choice models AgEcon
Gibson, Fiona L.; Burton, Michael P..
Observed and unobserved characteristics of an individual are often used by researchers to explain choices over the provision of environmental goods. One means for identifying what is typically an unobserved characteristic, such as an attitude, is through some data reduction technique, such as factor analysis. However, the resultant variable represents the true attitude with measurement error, and hence, when included into a non-linear choice model, introduces bias in the model. There are well established methods to overcome this issue, which are seldom implemented. In an application to preferences over two water source alternatives for Perth in Western Australia, we use structural equation modeling within a discrete choice model to determine whether...
Tipo: Working or Discussion Paper Palavras-chave: Contingent valuation; Attitudes; Structural equation modeling; Recycled water; Environmental Economics and Policy; Research Methods/ Statistical Methods; Q51; Q53; C13.
Ano: 2011 URL: http://purl.umn.edu/103428
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Community attitudes towards water management in the Moore Catchment, WA. AgEcon
Burton, Michael P.; Marsh, Sally P.; Patterson, Josie.
The Moore Catchment, which lies to the north of Perth, WA, suffers from a number of problems related to water management. Farmers want to manage salinity and waterlogging problems through the use of drains, but this has negative off-farm impacts on both the environment and flood risk. Views on responsibilities for managing water within the catchment differ between farmers, local communities and government agencies. This paper reports the results from surveys of attitudes towards catchment management, for two community groups: residents of Perth and residents of rural towns in the catchment. A parallel study of farmers has been undertaken but is not reported here. These surveys elicited general attitudes towards the environment and agriculture, and views on...
Tipo: Presentation Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/123616
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Precaution and Protectionism: 'Likeness' and GM Food at the WTO AgEcon
Rigby, Dan; Burton, Michael P.; Young, Trevor.
The dispute between the US and EU over GM foods at the WTO is examined in terms of the issues it raises about protectionism, environmental protection and precaution. The issue of whether GM, GM Derived and Non-GM foods are equivalent to each other is examined using data from a national choice modelling study in the UK. These categories of food are critical since they underpin the EU's new food labelling regime which it hoped would defuse the WTO dispute. The results are analysed using a Bayesian mixed logit model which allows greater flexibility in the modelling of preference distributions than that allowed through classical estimation. The Bayesian approach allows the use of censored normal and Johnson's SB distributions which can accommodate a bounded...
Tipo: Conference Paper or Presentation Palavras-chave: GM food; Mixed logit; WTP; Bayesian; WTO; International Relations/Trade; Q51; Q55; Q56; Q58.
Ano: 2006 URL: http://purl.umn.edu/25503
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Choice Experiments: identifying preferences or production functions? AgEcon
Gibson, Fiona L.; Burton, Michael P..
This report presents an alternative perspective on how respondents consider choice experiment options. Building on the ‘new’ model of consumer demand by Stigler and Becker (1977), the report suggests that the attributes within choice experiments are not valued directly. Rather, they are used to generate higher-level improvement in the environment (‘constructs’). This implies that to achieve the environmental outcome, what are currently viewed as marginal utilities of attributes are in fact marginal utilities mixed with (subjective) marginal productivity of the attribute. The research report also proposes that hierarchical Information integration methods may allow separate identification of the utility and production functions, and the individual...
Tipo: Report Palavras-chave: Environmental Economics and Policy; Research Methods/ Statistical Methods.
Ano: 2009 URL: http://purl.umn.edu/94889
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Biased estimates in discrete choice models: the appropriate inclusion of psychometric data into the valuation of recycled wastewater AgEcon
Gibson, Fiona L.; Burton, Michael P..
The introduction of measurement bias in parameter estimates into non-linear discrete choice models, as a result of using factor analysis, was identified by Train et al. (1987). They found that the inclusion of factor scores, used to represent relationships amongst like variables, into a subsequent discrete choice models introduced measurement bias as the measurement error associated with each factor score is excluded. This is an issue for non-market valuation given the increase in popularity of including psychometric data, such as primitive beliefs, attitudes and motivations, in willingness to pay estimates. This study explores the relationship between willingness to pay and primitive beliefs through a case study eliciting Perth community values for...
Tipo: Conference Paper or Presentation Palavras-chave: Discrete choice models; Attitudes; Factor analysis; Measurement models; Recycled wastewater.
Ano: 2009 URL: http://purl.umn.edu/47943
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Capturing Preference Heterogeneity in Stated Choice Models: A Random Parameter Logit Model of the Demand for GM Food AgEcon
Rigby, Dan; Burton, Michael P..
Analyses of data from random utility models of choice data have typically used fixed parameter representations, with consumer heterogeneity introduced by including factors such as the age, gender etc of the respondent. However, there is a class of models that assume that the underlying parameters of the estimated model (and hence preferences) are different for each individual within the sample, and that choices can be explained by identifying the parameters of the distribution from which they are drawn. Such a random parameter model is applied to stated choice data from the UK, and the results compared with standard fixed parameter models. The results provide new evidence of preferences for various aspects of the UK food system, particularly in relation to...
Tipo: Conference Paper or Presentation Palavras-chave: Random parameter logit; Choice modelling; GMOs; Food safety; Food Consumption/Nutrition/Food Safety.
Ano: 2003 URL: http://purl.umn.edu/58200
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More empirical evidence on the adoption of chick peas in Western Australia. or: Different ways of thinking about nothing. AgEcon
Abadi Ghadim, Amir K.; Burton, Michael P.; Pannell, David J..
Tipo: Presentation Palavras-chave: Crop Production/Industries.
Ano: 1999 URL: http://purl.umn.edu/121986
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The Value of Tropical Waterways and Wetlands: does an increase in knowledge change community preferences AgEcon
McCartney, Abbie; Cleland, Jonelle; Burton, Michael P..
This working paper utilises the choice modelling technique to investigate how information and understanding influences preferences of the general public for conservation of natural environments, specifically the tropical waterways and wetlands of the Kimberley region in Western Australia. The paper forms part of a larger study investigating preference divergence for environmental systems between experts and non-experts. By priming the public with more information about complex environmental problems, one might expect them to form preferences similar to that of experts. A preliminary analysis of public low and high information samples finds that, when birds and plants are the focus of species conservation with respect to the tropical waterways, increased...
Tipo: Journal Article Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/95065
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The welfare of small livestock producers in Vietnam under trade liberalisation-- Integration of trade and household models AgEcon
Linh, Pham Thi Ngoc; Burton, Michael P.; Vanzetti, David.
Vietnam has negotiated a series of bilateral and multilateral trade agreements and has made significant steps in integrating into the world economy. This integration is likely to have both positive and negative effects on different stakeholders in the economy. This paper seeks to measure the effects on the welfare of Vietnam’s small livestock producers' by linking a household model and the GTAP trade model. A GTAP utility SplitCom is used to separate out pig and poultry prior to several trade liberalisation scenarios being run. A recursive household model with a two-stage LES-AIDS model on consumption side and Cobb-Douglas functions on production side are used. Impacts of likely changes in the prices of inputs and outputs arising from different trade...
Tipo: Conference Paper or Presentation Palavras-chave: International Relations/Trade; Livestock Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/6023
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Decision-Making in a Social Welfare Context AgEcon
Scarborough, Helen; Burton, Michael P.; Bennett, Jeffrey W..
This paper presents analysis of the decision-making strategies adopted by respondents when confronted with potential policy options that include changes in both aggregate levels of welfare and equity in distribution. The analysis is based on the results of a choice experiment designed to estimate intergenerational distributional preferences. Non-linear welfare functions are employed within a conventional conditional logit framework. The heuristics employed by respondents in the stated preference context provide valuable insights into the application of welfare principles by respondents in determining trade-offs between the potential changes in the well-being of different generations.
Tipo: Conference Paper or Presentation Palavras-chave: Intergenerational Equity; Distribution; Choice modelling; Research Methods/ Statistical Methods.
Ano: 2009 URL: http://purl.umn.edu/47622
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Cattle breeding in Northern Australia: Revealing how consumers react to new technologies AgEcon
Pluske, Johanna M.; Burton, Michael P.; Rigby, Dan; Vercoe, Philip E..
In Australia, Bos taurus cattle breeds produce high quality meat, superior in taste and tenderness characteristics. Nevertheless, these breeds do not thrive in the Northern Australian environment. Stem cell transplant techniques could improve northern beef cattle breeding programs by facilitating crossbreeding via natural service. Focus groups were used in this study to explore consumer reaction to reproduction technologies and the implications for buying intentions. Findings suggested that consumers may react negatively to unconventional breeding technologies but the degree of this aversion is contingent upon how the technology is described. These findings are relevant for preparation of choice modeling surveys.
Tipo: Conference Paper or Presentation Palavras-chave: Non-market valuation; Consumers; Focus groups; New technologies; Beef.
Ano: 2009 URL: http://purl.umn.edu/48167
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Urban Water Restrictions: Attitudes and Avoidance AgEcon
Cooper, Bethany; Crase, Lin; Burton, Michael P..
In most urban cities across Australia, water restrictions remain the dominant policy mechanism to restrict urban water consumption. The extensive adoption of water restrictions over several years means that Australian urban water prices have consistently not reflected the opportunity cost of water (Edwards 2008). Given the generally strong political support for water restrictions and the likelihood that they will persist for some time, there is value in understanding householders’ attitudes in this context. More specifically, identifying the welfare gains associated with avoiding urban water restrictions entirely would be a non-trivial contribution to our knowledge. This paper is used to describe the results from a contingent valuation study that...
Tipo: Conference Paper or Presentation Palavras-chave: Urban water restrictions; Water policy; Contingent valuation; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/58892
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Precaution and Protectionism: GM Food and the WTO AgEcon
Rigby, Dan; Burton, Michael P.; Young, Trevor.
The dispute between the US and EU over GM foods at the WTO is examined in terms of the issues it raises about protectionism and environmental protection and precaution. The issue of whether GM, GM Derived and Non-GM foods are equivalent to each other is examined using data from a national choice modelling study in the UK. These categories of food are critical since they underpin the EU's new food labelling regime which it hoped would defuse the WTO dispute. The results are analysed using a Bayesian mixed logit model which allows greater flexibility in the modelling of preference distributions. This is particularly crucial where, as in this case, bi-modal distributions are identified with some indifferent or mildly averse to GM foodtypes while others are...
Tipo: Conference Paper or Presentation Palavras-chave: GM food; Mixed logit; WTP; Bayesian; WTO; International Relations/Trade; C11; C24; C25; D12; Q18.
Ano: 2005 URL: http://purl.umn.edu/24447
Registros recuperados: 28
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