نتایج جستجو برای: overdispersion

تعداد نتایج: 555  

Journal: :Parasitologia 2022

This paper discusses a process of developing the data analysis and modeling Pasteuria penetrans spore attachment in vitro planta, based on observation that number spores attaching to juveniles within given time increased by increasing exposure dose. Based this, P. was modeled using negative binomial distribution which permits decomposing observation’s variability into three components: randomne...

2015
Xuejun Liu Li Zhang Songcan Chen Yan W. Asmann

RNA-seq technology has become an important tool for quantifying the gene and transcript expression in transcriptome study. The two major difficulties for the gene and transcript expression quantification are the read mapping ambiguity and the overdispersion of the read distribution along reference sequence. Many approaches have been proposed to deal with these difficulties. A number of existing...

Journal: :Jurnal Gaussian : Jurnal Statistika Undip 2021

Maternal mortality is one indicator to describing prosperity in a country and of women's health. Most the maternal caused by postpartum mortality. The number postpastum events that probability incident small, where depending on certain time or regions with results observation are variable diskrit between independent each other follows Poisson distribution, so proper statistical method regressio...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2009
I A Silva M A Batalha

Ecological communities are the result of not only present ecological processes, such as competition among species and environmental filtering, but also past and continuing evolutionary processes. Based on these assumptions, we may infer mechanisms of contemporary coexistence from the phylogenetic relationships of the species in a community. We studied the phylogenetic structure of plant communi...

Journal: :Ecology 2007
Nathan G Swenson Brian J Enquist Jill Thompson Jess K Zimmerman

The relative importance of biotic, abiotic, and stochastic processes in structuring ecological communities continues to be a central focus in community ecology. In order to assess the role of phylogenetic relatedness on the nature of biodiversity we first quantified the degree of phylogenetic niche conservatism of several plant traits linked to plant form and function. Next we quantified the de...

Journal: :Ecology 2006
Jeannine Cavender-Bares Adrienne Keen Brianna Miles

Consideration of the scale at which communities are defined both taxonomically and spatially can reconcile apparently contradictory results on the extent to which plants show phylogenetic niche conservatism. In plant communities in north central Florida, we collected species abundances in 55 0.1-ha plots in several state parks. When communities were defined narrowly to include a single phylogen...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2010
André A Fenton William W Lytton Jeremy M Barry Pierre-Pascal Lenck-Santini Larissa E Zinyuk Stepan Kubík Jan Bures Bruno Poucet Robert U Muller Andrey V Olypher

Hippocampus place cell discharge is an important model system for understanding cognition, but evidence is missing that the place code is under the kind of dynamic attentional control characterized in primates as selective activation of one neural representation and suppression of another, competing representation. We investigated the apparent noise ("overdispersion") in the CA1 place code, hyp...

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