نتایج جستجو برای: log normal and gamma gamma distributions

تعداد نتایج: 16900978  

Journal: :European Journal of Mathematics and Statistics 2023

Telangana state's population is mostly dependent on agriculture. The economy depends heavily agriculture, as does the nation's and ability to achieve food security. Combining art science fit a statistical distribution data involves making trade-offs along way. secret effective analysis striking balance between improving distributional preserving ease of estimation while keeping in mind that ana...

2013
Ram C. Tripathi

The introduction of shape parameters into the statistical literature opened new areas of research and allowed statisticians to use models that produced better fits to experimental data. The Weibull and gamma families are prime examples wherein shape parameters produce more reliable statistical models than standard exponential models in lifetime studies. In the presence of many gamma-populations...

2012
Jack Singal V. Petrosian M. Ajello J. Singal

We present a determination of the distributions of the photon spectral index and gamma-ray flux—the so-called log N–log S relation—for the 352 blazars detected with a greater than approximately 7σ detection threshold and located above ±20◦ Galactic latitude by the Large Area Telescope of the Fermi Gamma-ray Space Telescope in its first year catalog. Because the flux detection threshold depends ...

Journal: :international journal of environmental research 2011
e. kapdan a. varinlioglu g. karahan

naturally occurring radionuclide of terrestrial origin (also called primordial radionuclide) are present in various degrees in all media in the environment, including the human body itself. their concentrations in environment decrease continually by decaying. the main objective of this study is to evaluate the radioactivity levels and health risks due to terrestrial radionuclide in soil of yal...

ژورنال: سنجش و ایمنی پرتو 2020

Todays gamma knife radiosurgery is used widely for treatment of very small brain tumors. In order to investigate accuracy of dosimetry and treatment planning calculations, using Monte Carlo simulation with dedicated code named as beamnrc including non-CT data and CT data options is necessary. The aim of this study is choosing the best options in order to have an accurate tools based on their ad...

2011
S. K. Agarwal

A generalized probability distribution is developed which served as a general formula for some well known probability distributions such as weibull, exponential, rayleigh. gamma, log-nonnal. pareto. maxwell, generalized laplace etc. Besides aforesaid probahility distributions, a family of new disuibutions can also be derived from it. The statistical properties viz. moments and moment generating...

Journal: :Symmetry 2021

We introduce a new class of distributions called the epsilon–positive family, which can be viewed as generalization with positive support. The construction family is motivated by ideas behind generation skew using symmetric kernels. This has special cases exponential, Weibull, log–normal, log–logistic and gamma distributions, it provides an alternative for analyzing reliability survival data. A...

     The purpose of this study was to compare the accuracy of genomic evaluation for Bayes A, Bayes B, Bayes C and Bayes L multi-step methods and SSBR-C and SSBR-A single-step methods in the different values of π for predicting genomic breeding values of the genotyped and non-genotyped animals. A genome with 40000 SNPs on the 20 chromosom was simulated with the same distance (100cM). The π valu...

2014
Nicos Georgiou Firas Rassoul-Agha Timo Seppäläinen

We introduce a random walk in random environment associated to an underlying directed polymer model in 1+1 dimensions. This walk is the positive temperature counterpart of the competition interface of percolation and arises as the limit of quenched polymer measures. We prove this limit for the exactly solvable log-gamma polymer, as a consequence of almost sure limits of ratios of partition func...

2013
Dmitry Ostrovsky

A new family of probability distributions βM,N , M = 0 · · ·N, N ∈ N on the unit interval (0, 1] is defined by the Mellin transform. The Mellin transform of βM,N is characterized in terms of products of ratios of Barnes multiple gamma functions, shown to satisfy a functional equation, and a Shintani-type infinite product factorization. The distribution log βM,N is infinitely divisible. If M < N...

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