نتایج جستجو برای: large population
تعداد نتایج: 1642692 فیلتر نتایج به سال:
We show that the data on γp and γγ interactions can be derived from the pp and p̄p forward scattering amplitudes using vector meson dominance and the additive quark model. The nucleon–nucleon data are parameterized using a model where high energy cross sections rise with energy as a consequence of the increasing numbers of soft partons populating the colliding particles. We present detailed desc...
BACKGROUND The tiger mosquito (Aedes albopictus), vector of several emerging diseases, is expanding into more northerly latitudes as well as into higher altitudes in northern Italy. Changes in the pattern of distribution of the tiger mosquito may affect the potential spread of infectious diseases transmitted by this species in Europe. Therefore, predicting suitable areas of future establishment...
the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...
Background and Objective: This study aims at investigating the vulnerability of areas in the eighth municipal district of Tehran. In this research, the indices of distance from fault, maximum earth acceleration, soil permeability, landslide, liquefaction, population density, land use, ground floor area, type of building materials, and age of buildings were identified, examined, and analyzed sta...
aim : we hypothesized that aih outcomes might be different in our patient population that consists of a large number of latinos. background : literature has suggested that the presentation and outcome of autoimmune hepatitis can be different among different ethnicity and communities. patients and methods : we performed a retrospective chart review of latino patients with aih diagnosed betwe...
A mathematical model of a mixed culture of bacteria in a fully three dimensional flow reactor which accounts for the colonization of the reactor wall surface by the microbes is studied both analytically and by simulation. It can be viewed as a model of the large intestine or of the fouling of a commercial bio-reactor or pipe flow. The primary focus is on coexistence of microbial populations in ...
Neuroscientists often propose detailed computational models to probe the properties of the neural systems they study. With the advent of neuromorphic engineering, there is an increasing number of hardware electronic analogs of biological neural systems being proposed as well. However, for both biological and hardware systems, it is often difficult to estimate the parameters of the model so that...
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