نتایج جستجو برای: pure birth process

تعداد نتایج: 1504752  

2014
J. Gaspar Lorén Maribel Farfán M. Carmen Fusté

Several approaches have been developed to estimate both the relative and absolute rates of speciation and extinction within clades based on molecular phylogenetic reconstructions of evolutionary relationships, according to an underlying model of diversification. However, the macroevolutionary models established for eukaryotes have scarcely been used with prokaryotes. We have investigated the ra...

2018
Conrad J. Burden Robert C. Griffiths

The stationary distribution of a sample taken from a Wright-Fisher diffusion with general small mutation rates is found using a coalescent approach. The approximation is equivalent to having at most one mutation in the coalescent tree to the first order in the rates. The approach is different from Burden and Tang (2016, 2017) who use a probability flux argument to obtain the same results from a...

2008
Minoru Biyajima Takeshi Osada Kenji Takei

A pure birth stochastic process with several initial conditions is considered. We analyze multiplicity distributions of e+e− collisions and e-p collisions, usig the Modified Negative Binomial Distribution (MNBD) and the Laguerre-type distribution. Several multiplicity distributions show the same minimum χ2’s values in analyses by means of two formulas: In these cases, we find that a parameter N...

Journal: : 2022

Alpine and Damascus goats were crossbred in a private goat farm established Adana that engaged raising order to develop genotype will give more milk the hot humid climate summer of Çukurova region. In this study, growth characteristics between birth weaning kids compared with kids. The animal material for study consisted 136 head pure 32 as well their fed dams' (average 0.70 litre / day) first ...

Journal: :iranian journal of psychiatry 0
ziba taghizadeh faculty member of nursing and midwifery care research center, nursing and midwifery school, tehran university of medical sciences. tehran, iran alireza irajpour nursing and midwifery care research center, isfahan university of medical sciences, isfahan, iran saharnaz nedjat school of public health, centre for academic and health policy (cahp), tums-kte study group, tehran university of medical sciences, tehran, iran mohammad arbabi psychiatry and psychology research center, roozbeh hospital, department of psychiatry,tehran university of medical sciences,tehran, iran violeta lopez research centre for nursing and midwifery practice, medical school, australian national university woden, australian capital territory, australia

objective: childbirth is one of the most vulnerable moments and the most important and memorable events in the lives of women that despite of bringing happiness, it can be associated with psychological trauma and endanger the mother and neonate health. mothers' perception of the psychological birth trauma is a highly subjective process that depends on the cultural, social and biological conditi...

Journal: :Physica A: Statistical Mechanics and its Applications 1990

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید