Consulta: subjectFacets:"Bayesian analysis"
Registros recuperados: 11
Data/hora: 07/06/2024 02:08:39

Infectivity of GI and GII noroviruses established from oyster related outbreaks
Provedor de dados: 5
Autores: 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

Systematic revision of the living species of Bullidae (Mollusca : Gastropoda : Cephalaspidea), with a molecular phylogenetic analysis
Provedor de dados: 5
Autores: Malaquias, Manuel Antonio E.; Reid, David G.
Bullidae are a worldwide family of marine shelled cephalaspidean gastropods with a mainly tropical distribution, but also with some representatives in temperate waters. The taxonomy of the group has in the past been based only on shell characters, and the few anatomical accounts available have not addressed more than one to three species, so there has been no agreement about the number of valid species. Seventy-two specific names and 16 varietal names have been proposed worldwide. The systematics of the family Bullidae are revised, based not only on shells but also on anatomy of all extant species and on DNA sequence data. Twelve species are recognized worldwide, including one new species here described, and all are assigned to the genus Bulla. Two species...
Tipo: Text
Palavras-chave: Bayesian analysis; Bulla; DNA sequences; Morphological stasis; Taxonomy.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00466/57805/60094.pdf

A Bayesian approach to estimate the accuracy of "in-house" ELISA assay to measure rabies antibodies from compulsory vaccinated dogs and cattle
Provedor de dados: 80
Autores: 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

Evaluating Different Growth Scenarios for Organic Farming Using Bayesian Techniques
Provedor de dados: 31
Autores: 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

Improving the Nutrient Content of Food through Genetic Modification: Evidence from Experimental Auctions on Consumer Acceptance
Provedor de dados: 31
Autores: 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

Best Management Practices to Enhance Water Quality: Who is Adopting Them?
Provedor de dados: 31
Autores: 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

Managerial reputation and the "endgame"
Provedor de dados: 31
Autores: 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

Advanced Methods for Dose-Response Assessment: Bayesian Approaches - Final Report
Provedor de dados: 31
Autores: 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

Improved Bayes estimators and prediction for the Wilson-Hilferty distribution
Provedor de dados: 42
Autores: RAMOS,PEDRO L.; ALMEIDA,MARCO P.; TOMAZELLA,VERA L.D.; LOUZADA,FRANCISCO.
Abstract: In this paper, we revisit the Wilson-Hilferty distribution and presented its mathematical properties such as the r-th moments and reliability properties. The parameters estimators are discussed using objective reference Bayesian analysis for both complete and censored data where the resulting marginal posterior intervals have accurate frequentist coverage. A simulation study is presented to compare the performance of the proposed estimators with the frequentist approach where it is observed a clear advantage for the Bayesian method. Finally, the proposed methodology is illustrated on three real datasets.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bayesian analysis; Bayesian prediction; Censored data; Objective prior; Wilson-Hilferty distribution.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500202

Genetic parameters of growth and survival in Acacia saligna shrubs
Provedor de dados: 118
Autores: 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

Genetic characterization of Japanese plum cultivars (Prunus salicina) using SSR and ISSR molecular markers
Provedor de dados: 118
Autores: 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