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Registros recuperados: 11
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A Bayesian approach to estimate the accuracy of "in-house" ELISA assay to measure rabies antibodies from compulsory vaccinated dogs and cattle J. Venom. Anim. Toxins incl. Trop. Dis.
Nogueira,AHC; Silva,C; Gomes,DE; Rosa,ACG; Luvizotto,MCR; Cardoso,TC.
Rabies is a vaccine-preventable disease that causes acute encephalitis in mammals, and it is still a significant public health problem in numerous countries. Infected dogs represent the main vectors involved in human rabies. Additionally, cattle rearing close to geographic areas where vampire bats are found presents an important connection with rural epidemiology. We applied two "in-house" enzyme-linked immunosorbent assay (ELISA) methodologies, considered alternatives to measure antibodies from vaccinated dogs and cattle, without employing the gold standard approach. The ELISA assays were performed on individual serum samples taken from domestic adult dogs and cows compulsory vaccinated against rabies (147 urban dogs and 64 cows; n = 211). The sandwich...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rabies antibody; Bayesian analysis; ELISA assay.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000100012
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Advanced Methods for Dose-Response Assessment: Bayesian Approaches - Final Report AgEcon
Wilson, James D..
Resources for the Future (RFF), in conjunction with the U.S. Environmental Protection Agency, the Society for Risk Analysis, and the Electric Power Research Institute, held a workshop Sept. 18-20, 2000, at the RFF Conference Center in Washington, DC. The intent was to discuss how Bayesian approaches could be useful in improving techniques for estimating exposure-response functions. Ten distinguished scholars from a range of fields (medical biostatistics, decision sciences, environmental engineering, and toxicology) served as faculty. Approximately 80 people attended the workshop. Bayesian methods have been applied to a variety of problems in biomedical research and environmental risk analysis, including design of clinical trials, estimation of exposures to...
Tipo: Working or Discussion Paper Palavras-chave: Bayesian analysis; Dose-response; Regulation; Risk assessment; Arsenic; Risk and Uncertainty.
Ano: 2001 URL: http://purl.umn.edu/10754
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Best Management Practices to Enhance Water Quality: Who is Adopting Them? AgEcon
Ghazalian, Pascal L.; Larue, Bruno; West, Gale E..
This study investigates the determinants affecting producers’ adoption of some Best Management Practices (BMPs). Priors about the signs of certain variables are explicitly accounted for by testing for inequality restrictions through importance sampling. Education, gender, age, and on-farm residence are found to have significant effects on the adoption of some BMPs. Farms with larger animal production are more apt to implement manure management practices, crop rotation, and riparian buffer strips. Also, farms with larger cultivated acres are more inclined to implement herbicide control practices, crop rotation, and riparian buffer strips. Belonging to an agro-environment club has a positive impact for most BMPs.
Tipo: Journal Article Palavras-chave: Adoption; Bayesian analysis; Best management practices; Priors; Runoff; Water quality; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; Farm Management; Food Consumption/Nutrition/Food Safety; Land Economics/Use; Livestock Production/Industries; Q12; Q25; C11.
Ano: 2009 URL: http://purl.umn.edu/56655
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Breeding potential and genetic diversity of "híbrido do timor" coffee evaluated by molecular markers. Repositório Alice
SETOTAW, T. A.; CAIXETA, E. T.; PENA, G F.; ZAMBOLIM, E. M.; PEREIRA, A. A..
AFLP, RAPD and SSR molecular markers were used to study the genetic diversity and genetic structure of the Híbrido de Timor germplasm. The principal coordinate analysis, UPGMA cluster analysis based on genetic dissimilarity of Jaccard, Bayesian model-based cluster analysis, percentage of polymorphic loci, Shannon?s information index and Nei gene diversity were employed to assess the genetic diversity. The analyses demonstrated a high genetic diversity among Híbrido de Timor accessions. UPGMA and Bayesian cluster analyses grouped the accessions into three clusters. The genetic structure of Híbrido de Timor is reported. The management of Híbrido de Timor germplasm variability and its potential use in breedin programs are discussed.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coffee breeding; DNA markers; Rust resistance; Bayesian analysis; Principal coordinate analysis.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/880496
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Comparação Bayesiana de modelos não-lineares para curvas de crescimento de bovinos Nelore criados no Pantanal Sul Mato Grossense, sub-região de Aquidauana. Repositório Alice
OLIVEIRA, D. P. de.; SONOHOTA, M. M.; ROSSI, R. M.; ABREU, U. G. P. de.
O ajuste de modelos de curvas de crescimento é utilizado para delinear o crescimento dos animais de um determinado grupo genético. O objetivo deste estudo foi ajustar curvas de alguns modelos não-lineares para determinar um padrão do crescimento médio de bezerros do grupo genético composto da raça Nelore do Pantanal Sul-Mato-Grossense, por meio de inferência Bayesiana. Foram ajustados os modelos Logístico, de Brody, de Gompertz e Von Bertalanffy. Dentro do período analisado, os modelos Logístico e de Gompertz mostraram-se adequados para descrever o crescimento médio destes animais.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Inferência Bayesiana; Gado de corte; Curva de crescimento; Bayesian analysis; Beef cattle; Growth curve.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/964749
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Evaluating Different Growth Scenarios for Organic Farming Using Bayesian Techniques AgEcon
Gardebroek, Cornelis.
Different views exist on the future development of organic agriculture. The Dutch government believes that in 2010 10% of the farm land will be used for organic farming. Others have a more radical view: due to increasing emphasis on sustainable production in the end all farming will be organic. Others believe in a more pessimistic scenario in which the recent growth in organic was just a temporary upswing and that the share of organic farmers already reached its maximum. In this paper different potential scenarios for the further growth of organic farming are evaluated using Bayesian techniques. A nonlinear logistic growth model explaining the share of organic farms is estimated using available historical data for Dutch agriculture. Various scenarios imply...
Tipo: Conference Paper or Presentation Palavras-chave: Organic farming; Bayesian analysis; Non-linear logistic growth curves; Farm Management.
Ano: 2008 URL: http://purl.umn.edu/44211
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Genetic characterization of Japanese plum cultivars (Prunus salicina) using SSR and ISSR molecular markers Ciencia e Investigación Agraria
Carrasco,Basilio; Díaz,Carole; Moya,Mario; Gebauer,Marlene; García-González,Rolando.
The genetic characterization of 29 elite Japanese plum cultivars (Prunus salicina) and 4 Prunus cultivars was carried out by analyzing 97 Simple Sequence Repeat (SSR) alleles and 232 binary Inter Simple Sequence Repeat (ISSR) loci. A high level of genetic variability was found for these two molecular markers among the Japanese plum cultivars compared to other Prunus species. On average, the variability found by analyzing the SSR alleles were Na = 12.1, Ne = 5.2, Ho = 0.9, He = 0.8 and F= -0.127, whereas ISSR yielded values of h = 0.15 and I = 0.27. The genetic relationship among cultivars was estimated with Principal Coordinate Analysis (PCA) and a Bayesian clustering approach using the software program Structure. This program identified two subgroups...
Tipo: Journal article Palavras-chave: AMOVA; Bayesian analysis; Genetic distance; PCA; Plum; Structure.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300012
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Genetic parameters of growth and survival in Acacia saligna shrubs Ciencia e Investigación Agraria
Mora,Freddy; Perret,Sandra; Scapim,Carlos Alberto; Arnhold,Emmanuel.
Acacia species have valuable agronomic characteristics, such as the tolerance to unfavorable environmental conditions. In this study, genetic parameters and selection response in Acacia saligna shrubs were investigated in two arid environments of northern Chile: Cuz-Cuz and El Tangue. The quantitative traits were assessed in 5 year-old shrubs. A Bayesian approach, implemented using Gibbs sampling algorithm, was used in the data analysis. The tree survival was 87.3% and 81.8% in Cuz-Cuz and El Tangue, respectively, confirming the potential of A. saligna in northern Chile. The estimates of posterior mode of the heritability ranged from h2=0.13 (survival) to h2=0.25 (shrub crown diameter). Estimated genetic gain (individual tree selection) ranged from 6 to...
Tipo: Journal article Palavras-chave: Drylands; Fodder production; Acacia saligna; Multipurpose trees; Bayesian analysis.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200001
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Improving the Nutrient Content of Food through Genetic Modification: Evidence from Experimental Auctions on Consumer Acceptance AgEcon
Colson, Gregory; Huffman, Wallace E.; Rousu, Matthew C..
This paper assesses consumers’ acceptance of nutritionally enhanced vegetables using a series of auction experiments administered to a random sample of adult consumers. Evidence suggests that consumers are willing to pay significantly more for fresh produce with labels signaling enhanced levels of antioxidants and vitamin C achieved by moving genes from within the species, as opposed to across species. However, this premium is significantly affected by diverse information treatments injected into the experiments.
Tipo: Journal Article Palavras-chave: Bayesian analysis; Experimental auction; Food products; Genetic modification; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety.
Ano: 2011 URL: http://purl.umn.edu/117201
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Infectivity of GI and GII noroviruses established from oyster related outbreaks ArchiMer
Thebault, Anne; Teunis, Peter F. M.; Le Pendu, Jacques; Le Guyader, Soizick; Denis, Jean-baptiste.
Noroviruses (NoVs) are the major cause of acute epidemic gastroenteritis in industrialized countries. Outbreak strains are predominantly genogroup II (GII) NoV, but genogroup I (GI) strains are regularly found in oyster related outbreaks. The prototype Norwalk virus (GI), has been shown to have high infectivity in a human challenge study. Whether other NoVs are equally infectious via natural exposure remains to be established. Human susceptibility to NoV is partly determined by the secretor status (Se+/-). Data from five published oyster related outbreaks were analyzed in a Bayesian framework. Infectivity estimates where high and consistent with NV(GI) infectivity, for both GII and GI strains. The median and CI95 probability of infection and illness, in...
Tipo: Text Palavras-chave: Norovirus; Shellfish; Bayesian analysis; Dose-response relationship; Fucosyltransferases.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00148/25927/24030.pdf
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Managerial reputation and the "endgame" AgEcon
Berck, Peter; Lipow, Jonathan.
Tipo: Working or Discussion Paper Palavras-chave: Bayesian analysis; Equilibrium (economics); Risk management; Risk and Uncertainty; Industrial Organization.
Ano: 1999 URL: http://purl.umn.edu/43912
Registros recuperados: 11
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