Zobrazeno 1 - 10 of 58 pro vyhledávání: '"Jan Graffelman"'
1
Akademický článek
Maximum‐likelihood estimation of the geometric niche preemption model
Autor: Jan Graffelman
Publikováno v: Ecosphere, Vol 12, Iss 12, Pp n/a-n/a (2021)
Abstract The geometric series or niche preemption model is an elementary ecological model in biodiversity studies. The preemption parameter of this model is usually estimated by regression or iteratively by using May's equation. This article proposes
Externí odkaz: https://doaj.org/article/5ce1309e606c41feb92290614e695045
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2
Akademický článek
A Log-Ratio Biplot Approach for Exploring Genetic Relatedness Based on Identity by State
Autor: Jan Graffelman, Iván Galván Femenía, Rafael de Cid, Carles Barceló Vidal
Publikováno v: Frontiers in Genetics, Vol 10 (2019)
The detection of cryptic relatedness in large population-based cohorts is of great importance in genome research. The usual approach for detecting closely related individuals is to plot allele sharing statistics, based on identity-by-state or identit
Externí odkaz: https://doaj.org/article/1010fb8732ca431faa6996ce99352ff1
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3
Akademický článek
Exploring Diallelic Genetic Markers: The HardyWeinberg Package
Autor: Jan Graffelman
Publikováno v: Journal of Statistical Software, Vol 64, Iss 1, Pp 1-23 (2015)
Testing genetic markers for Hardy-Weinberg equilibrium is an important issue in genetic association studies. The HardyWeinberg package offers the classical tests for equilibrium, functions for power computation and for the simulation of marker data u
Externí odkaz: https://doaj.org/article/bd66a8bdf56843229f36b000d95043e8
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4
Akademický článek
Statistical inference for Hardy-Weinberg proportions in the presence of missing genotype information.
Autor: Jan Graffelman, Milagros Sánchez, Samantha Cook, Victor Moreno
Publikováno v: PLoS ONE, Vol 8, Iss 12, p e83316 (2013)
In genetic association studies, tests for Hardy-Weinberg proportions are often employed as a quality control checking procedure. Missing genotypes are typically discarded prior to testing. In this paper we show that inference for Hardy-Weinberg propo
Externí odkaz: https://doaj.org/article/9238f6e586cc40b38d7a03648d82906a
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5
Akademický článek
Similarity in recombination rate estimates highly correlates with genetic differentiation in humans.
Autor: Hafid Laayouni, Ludovica Montanucci, Martin Sikora, Marta Melé, Giovanni Marco Dall'Olio, Belén Lorente-Galdos, Kate M McGee, Jan Graffelman, Philip Awadalla, Elena Bosch, David Comas, Arcadi Navarro, Francesc Calafell, Ferran Casals, Jaume Bertranpetit
Publikováno v: PLoS ONE, Vol 6, Iss 3, p e17913 (2011)
Recombination varies greatly among species, as illustrated by the poor conservation of the recombination landscape between humans and chimpanzees. Thus, shorter evolutionary time frames are needed to understand the evolution of recombination. Here, w
Externí odkaz: https://doaj.org/article/6ebab011483d4ed7a3f20e8bb5e36703
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7
Improved approximation and visualization of the correlation matrix
Autor: Jan Graffelman, Jan de Leeuw
The graphical representation of the correlation matrix by means of different multivariate statistical methods is reviewed, a comparison of the different procedures is presented with the use of an example data set, and an improved representation with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::241deec6087abb59fdc64c50aae2cc2b
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8
The transitivity of the Hardy-Weinberg law
Autor: Jan Graffelman, Bruce S. Weir
The reduction of multi-allelic polymorphisms to variants with fewer alleles, two in the limit, is addressed. The Hardy-Weinberg law is shown to be transitive in the sense that a multi-allelic polymorphism that is in equilibrium will retain its equili
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bac913d4f724f7686956a8ced60c62a2
https://doi.org/10.1101/2021.09.09.459657
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9
A likelihood ratio approach for identifying three-quarter siblings in genetic databases
Autor: Lauro Sumoy, Iván Galván-Femenía, Rafael de Cid, Jan Graffelman, Victor Moreno, Carles Barceló-Vidal
Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Heredity
r-IGTP. Repositorio Institucional de Producción Científica del Instituto de Investigación Germans Trias i Pujol
instname
The detection of family relationships in genetic databases is of interest in various scientific disciplines such as genetic epidemiology, population and conservation genetics, forensic science, and genealogical research. Nowadays, screening genetic d
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8f998a0baa9e98b4c0daeb997e9dd44
http://hdl.handle.net/2117/343815
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10
Using compositional mixed-effects models to evaluate responses to amino acid supplementation in milk replacers for calves
Autor: M. Vidal, Alex Bach, I. Ortuzar, Anna Bassols, Jan Graffelman, M. Terré
Publikováno v: IRTA Pubpro. Open Digital Archive
Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
The consequences of supplementing Lys, Met, and Thr in milk replacers (MR) for calves have been widely studied, but scarce information exists about potential roles of other AA (whether essential or not). The effects on growth performance of supplemen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71d63577084822a0433c8ca61993382d
http://hdl.handle.net/20.500.12327/1323
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