scholarly journals Application of the Bayesian Approach to Incorporate Helium Isotope Ratios in Long-Term Probabilistic Volcanic Hazard Assessments in Tohoku, Japan

10.5772/51859 ◽  
2012 ◽  
Author(s):  
Andrew James ◽  
Koji Umeda ◽  
Tsuneari Ishimaru
Keyword(s):  
Bayesian Approach ◽  
Volcanic Hazard ◽  
Isotope Ratios ◽  
Helium Isotope ◽  
Hazard Assessments ◽  
The Bayesian Approach

scholarly journals Bayesian-based pipe failure model

2004 ◽  
Vol 6 (4) ◽  
pp. 259-264 ◽  
Author(s):  
T. G. Watson ◽  
C. D. Christian ◽  
A. J. Mason ◽  
M. H. Smith ◽  
R. Meyer
Keyword(s):  
Discrete Event Simulation ◽  
Bayesian Approach ◽  
Distribution Systems ◽  
Discrete Event ◽  
Object Oriented ◽  
Event Simulation ◽  
Maintenance Policies ◽  
Term Management ◽  
The Bayesian Approach

The efficient long term management of large-scale public funded assets is an area of growing importance. Ageing infrastructure, growth and limited capital all result in the need for a more robust and rigorous methodology to prioritise rehabilitation and renewal decisions and, as importantly, to forecast future expenditure requirements. The overall objective of this research is to develop a Bayesian-based decision support system that will facilitate the identification of efficient asset management policies. The Bayesian approach enables us to formally incorporate, express and update our uncertainty when determining such policies. This is particularly relevant for water utilities that have incomplete or unreliable historical failure data sets and, as a consequence, rely heavily on past engineering experience. An object oriented discrete event simulation has been developed to analyse existing maintenance policies, test the Bayesian methodology and to develop and identify improved maintenance policies. This paper focuses on the areas of research relating to the long term management of water distribution systems and, in particular, will present: (1) an overview of the Bayesian approach, (2) development and initial results for an object oriented discrete event simulation and (3) proposed future research and development.

scholarly journals The Bayesian Approach and the Results of the ISAR-REACT 5 Trial

2021 ◽  
Vol 14 (2) ◽  
pp. 231-232
Author(s):  
Adnan Kastrati ◽  
Alexander Hapfelmeier
Keyword(s):  
Bayesian Approach ◽  
The Bayesian Approach

Immigration, Assimilation, and Status in the Ancient City of Teotihuacan: Stable Isotopic Evidence from Tlajinga 33

2004 ◽  
Vol 15 (2) ◽  
pp. 176-198 ◽  
Author(s):  
Christine D. White ◽  
Rebecca Storey ◽  
Fred J. Longstaffe ◽  
Michael W. Spence
Keyword(s):  
Tooth Development ◽  
Stable Carbon Isotope ◽  
Geographic Location ◽  
Isotope Ratios ◽  
Bone Collagen ◽  
Considerable Proportion ◽  
Economic Productivity ◽  
Oxygen Isotope Ratios ◽  
Immigration Assimilation

AbstractStable carbon isotope ratios in bone collagen and oxygen isotope ratios in bone and enamel phosphate from 25 individuals from the residential compound of Tlajinga 33 were used to examine the possibility that the inhabitants, who were craft producers, may have accepted immigrants to maintain either their ability to reproduce themselves as a social group or their level of economic productivity. Bone δ18O and δ13C values provide a long-term picture of geographic identity and diet, and enamel δ18O values provide a snapshot of geographic location during particular tooth development. A considerable proportion (29 percent) of the Tlajinga 33 inhabitants grew up elsewhere, but the majority of these immigrants had dwelt in Teotihuacan for many years before their death. Neither geographical relocation nor dietary differences are significantly associated with gender. The social position of foreigners appears to have been generally high. For example, the occupants of Tomb 50 appear to have come from elsewhere, possibly West Mexico, but foreigners were also found in lower status contexts such as middens. The stable isotope ratios reflecting long-term dwelling at Teotihuacan suggest that social status was achieved, which supports current archaeological evidence. Furthermore, the lack of dietary differences between immigrants and native Teotihuacanos may also imply political and/or ethnic assimilation.

A new Bayesian approach for QTL mapping of family data

2021 ◽  
Author(s):  
Daiane Aparecida Zuanetti ◽  
Luis Aparecido Milan
Keyword(s):  
Qtl Mapping ◽  
Random Effects ◽  
Bayesian Approach ◽  
Variance Component ◽  
Mendelian Inheritance ◽  
Family Data ◽  
Data Sets ◽  
Mendelian Segregation ◽  
Gaw17 Data ◽  
The Bayesian Approach

In this paper, we propose a new Bayesian approach for QTL mapping of family data. The main purpose is to model a phenotype as a function of QTLs’ effects. The model considers the detailed familiar dependence and it does not rely on random effects. It combines the probability for Mendelian inheritance of parents’ genotype and the correlation between flanking markers and QTLs. This is an advance when compared with models which use only Mendelian segregation or only the correlation between markers and QTLs to estimate transmission probabilities. We use the Bayesian approach to estimate the number of QTLs, their location and the additive and dominance effects. We compare the performance of the proposed method with variance component and LASSO models using simulated and GAW17 data sets. Under tested conditions, the proposed method outperforms other methods in aspects such as estimating the number of QTLs, the accuracy of the QTLs’ position and the estimate of their effects. The results of the application of the proposed method to data sets exceeded all of our expectations.

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