112,000 research outputs found
Bayesian Nonparametric Construction of the Fleming-Viot Process with Fertility Selection
No full textThis paper provides the construction in a Bayesian setting of the Fleming-Viot measurevalued process with diploid fertility selection and highlights new connections between Bayesian nonparametrics and population genetics. Via a generalisation of the Blackwell-MacQueen Polya-urn scheme, a Markov particle process is defined such that the associated process of empirical measures converges to the Fleming-Viot diffusion. The stationary distribution, known from Ethier and Kurtz (1994), is then derived through an application of the Dirichlet process mixture model and shown to be the de Finetti measure of the particle process. The Fleming-Viot process with haploid selection is derived as a special case.Fleming-Viot process; Measure-valued process; Fertility selection; Gibbs sampler; Dirichlet process mixture model; Blackwell-MacQueen urn-scheme
A Fleming-Viot process and Bayesian nonparametrics
No full textThis paper provides a construction of a Fleming-Viot measure valued diffusion process, for which the transition function is known, by extending recent ideas of the Gibbs sampler based Markov processes. In particular, we concentrate on the Chapman-Kolmogorov consistency conditions which allows a simple derivation of such a Fleming-Viot process, once a key and apparently new combinatorial result for Polya-urn sequences has been establishe
Construction and Stationary Distribution of the Fleming-Viot Process with Viability Selection
No full textThis paper provides an explicit construction of the Fleming-Viot process with viability selection in a Bayesian nonparametric framework, and derives its stationary distribution. The measure-valued diffusion is obtained as the infinite population limit of the empirical measures of a semi-Markov process of exchangeable particles. In the limit the stationary distribution is shown to be the two-parameter Poisson-Dirichlet process, also known as the Pitman-Yor process.Fleming-Viot process; semi-Markov process; viability selection; stationary distribution; two-parameter Poisson-Dirichlet process.
Gravesite of VMI Cadet William T. Fleming
No full textWilliam T. Fleming who died at VMI of typhoid fever on November 2, 1862, only 6 weeks after beginning his cadetship. This is a view of his burial place in the Coleman/Fleming family graveyard at "Chantilly" in Hanover County, Virginia. The property is currently owned by the Hope family
T. V. Fleming, Foundations of Philosophy
No full textFeys Robert. T. V. Fleming, Foundations of Philosophy. In: Revue Philosophique de Louvain. Troisième série, tome 49, n°22, 1951. pp. 263-264
T. V. Fleming, Foundations of Philosophy
No full textFeys Robert. T. V. Fleming, Foundations of Philosophy. In: Revue Philosophique de Louvain. Troisième série, tome 49, n°22, 1951. pp. 263-264
Trichiini Fleming 1821
No full textTribeTRICHIINI Fleming, 1821 Original spelling and citation: Trichiadae Fleming 1821: 50 Type genus: Trichius Fabricius, 1775: 40 Remark: Trichiinae Lozek, 1956 (Mollusca: Gastropoda) is a junior homonym of this family-group name. A recent case to the International Commission on Zoological Nomenclature to emend the spelling of the gastropod to remove it from homonymy was not approved (ICZN 2004).Published as part of Smith, Andrew B. T., 2006, A Review Of The Family- Group Names For The Superfamily Scarabaeoidea (Coleoptera) With Corrections To Nomenclature And A Current Classification, pp. 144-204 in The Coleopterists Bulletin (mo 5) (mo 5) 60 on page 177, DOI: 10.1649/0010-065x(2006)60[144:arotfn]2.0.co;
Grand challenges for public health
No full textWhat is the future for public health in the twenty-first century? Can we glean an idea about the future of public health from its past? As Winston Churchill once said: ‘[T]he further backward you look, the further forward you can see.’ What can we see in the history of public health that gives us an idea of where public health might be headed in the future? (Gruszin et al. 2012).\ud
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In the twentieth century there was substantial progress in public health in Australia. These improvements were brought about through a number of factors. In part, improvements were due to increasing knowledge about the natural history of disease and its treatment. Added to this knowledge was a shifting focus from legislative measures to protect health, to the emergence of improved promotion and prevention strategies, and a general improvement in social and economic conditions for people living in countries such as Australia. Gruszin et al. (2012) consider the range of social and economic reforms of the twentieth century as the most important determinants of the public’s health at the start of the twenty-first century (Gruszin et al. 2012 p 201). The same could not, however, be said for second or third world countries, many of whom have the most fundamental of sanitary and health protection issues still to deal with. For example, in sub-Saharan Africa and in Russia the decline in life expectancy can be said to be related to a range of interconnected factors. In Russia, issues such as alcoholism, violence, suicide, accidents and cardiovascular disease could be contributing to the falling life expectancy (McMichael & Butler 2007). In sub-Saharan Africa, a range of factors, such as HIV/AIDS, poverty, malaria, tuberculosis, undernutrition, totally inadequate infrastructure, gender inequality, conflict and violence, political taboos and a complete lack of political will, have all contributed to a dramatic drop in life expectancy (McMichael & Butler 2007)
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