Results 1 to 10 of about 495,921 (307)

Improved time-varying reproduction numbers using the generation interval for COVID-19 [PDF]

open access: yesFrontiers in Public Health, 2023
Estimating key epidemiological parameters, such as incubation period, serial interval (SI), generation interval (GI) and latent period, is essential to quantify the transmissibility and effects of various interventions of COVID-19.
Tobhin Kim   +7 more
doaj   +2 more sources

Serial Interval and Generation Interval for Imported and Local Infectors, Respectively, Estimated Using Reported Contact-Tracing Data of COVID-19 in China [PDF]

open access: yesFrontiers in Public Health, 2021
The emerging virus, COVID-19, has caused a massive outbreak worldwide. Based on the publicly available contact-tracing data, we identified 509 transmission chains from 20 provinces in China and estimated the serial interval (SI) and generation interval ...
Menghui Li   +5 more
doaj   +2 more sources

Stochastic simulations to optimize genomic selection for laying hens: Impact of generation interval and genotyping in the context of extended laying period [PDF]

open access: yesPoultry Science
Extending the productive lifespan of laying hens is a key objective for sustainable egg production. Achieving this goal requires improving egg production and quality traits expressed late in life.
Mathilde Doublet   +9 more
doaj   +2 more sources

Genetic diversity evolution in the Mexican Charolais cattle population [PDF]

open access: yesAnimal Bioscience, 2021
Objective The aim was to characterize the genetic diversity evolution of the registered Mexican Charolais cattle population by pedigree analysis. Methods Data consisted of 331,390 pedigree records of animals born from 1934 to 2018.
Ángel Ríos-Utrera   +5 more
doaj   +1 more source

Genetic variability of Guzerat cattle raised in northern Brazil, based on pedigree analysis

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2022
Genealogical data comprised 45,711 animals born between 1901 and 2016, with 48,127 animals in the pedigree file. Population structure was analyzed in terms of pedigree completeness, individual inbreeding coefficient (F), generation interval (L), rate of ...
J.L. Ferreira   +10 more
doaj   +1 more source

Inference of the SARS-CoV-2 generation time using UK household data

open access: yeseLife, 2022
The distribution of the generation time (the interval between individuals becoming infected and transmitting the virus) characterises changes in the transmission risk during SARS-CoV-2 infections.
William S Hart   +8 more
doaj   +1 more source

On generalized interval orders [PDF]

open access: yesInternational Mathematical Forum, 2007
In this paper, we introduce the notion of generalized interval order (GIO) which extends the notion of interval order in non-transitive binary relations. This allow us to extend the classical representation theorem of Fishburn in [5]. We also provide sufficient conditions which ensure the existence of the Generalized Optimal Choice Set (GOCS) of GIOs ...
Andrikopoulos, A., Philippopoulou, E.
openaire   +2 more sources

Using Proper Mean Generation Intervals in Modeling of COVID-19

open access: yesFrontiers in Public Health, 2021
In susceptible–exposed–infectious–recovered (SEIR) epidemic models, with the exponentially distributed duration of exposed/infectious statuses, the mean generation interval (GI, time lag between infections of a primary case and its secondary case) equals
Xiujuan Tang   +6 more
doaj   +1 more source

The effectiveness of genomic selection for milk production traits of Holstein dairy cattle [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2020
Objective This study was conducted to test the efficiency of genomic selection for milk production traits in a Korean Holstein cattle population. Methods A total of 506,481 milk production records from 293,855 animals (2,090 heads with single nucleotide ...
Yun-Mi Lee   +6 more
doaj   +1 more source

A generalization of interval orders [PDF]

open access: yesElectronic Notes in Discrete Mathematics, 1999
Abstract We provide an answer to an open problem concerning the representation of preferences by intervals. Given a finite set of elements and three relations on this set (indifference, weak preference and strict preference), necessary and sufficient conditions are provided for representing the elements of the set by intervals in such a way that 1 ...
Tsoukias, Alexis, Vincke, Philippe
openaire   +1 more source

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