نتایج جستجو برای: inversion

تعداد نتایج: 44409  

In Demography and modelling mortality (or failure) data the univariate Makeham-Gompertz is well-known for its extension of exponential distribution. Here, a bivariate class of Gompertz--Makeham distribution is constructed based on random number of extremal events. Some reliability properties such as ageing intensity, stress-strength based on competing risks are given. Also dependence properties...

Journal: :فیزیک زمین و فضا 0
عسل رحیمی زینال دانشجوی کارشناسی ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران محمدعلی ریاحی دانشیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران

this paper describes a methodology for the integration of well logs and a series of grid-based attributes extracted from interpreted seismic data for prediction of porosity distributions. the studied area is located in the southwest iran. before finding a relationship between the target logs and predicted logs from 3d seismic data, we have interpreted the 3d seismic data in the studied area. al...

2013
Alejandro Cáceres Suzanne Sindi Ben Raphael Mario Cáceres Juan Ramon González

This vignette shows the main functionalities of the inveRsion package. A small data set is used to illustrate the main steps for the detection of inversions with haplotype (phased) data. The package also handles genotype data, but as it is more computationally demanding, such analysis is presented in a complementary manual distributed with the software. Please refer to this for more details.

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
T Wen D Ming X Dai J Dai W E Evenson

Inversion problems have recently drawn vast amounts of attention from the physics community due to their potential widespread applications. In this Rapid Communication, a different type of inversion problem in physics is proposed: an inverse emissivity problem, which aims to determine the emissivity g(nu) by measuring only the total radiated power J(T). Like other inverse problems, this one has...

Journal: :international journal of molecular and cellular medicine 0
debarshi sanyal lilac insight pvt ltd, ambience court, 19th floor, unit 1901 & 1902, sec-19 vashi, navi mumbai 400705 maharashtra, india. vidya bhairi lilac insight pvt ltd, ambience court, 19th floor, unit 1901 & 1902, sec-19 vashi, navi mumbai 400705 maharashtra, india. jayarama s kadandale centre for human genetics, biotech park, electronic city, phase- i, bangalore-560100, karnataka, india.

we present 2 cases of likely rare event. in case 1, 3rd degree consanguineous marriage revealed inv(6) with same break points in parents who were found to be phenotypically normal. the same inv(6) being inherited in progeny but presented with low amh (anti mullerian hormone) and high level of fsh (follicular stimulating hormone) leading to polycystic ovarian syndrome/premature ovarian failure. ...

The matrix inversion plays a signifcant role in engineering and sciences. Any nonsingular square matrix has a unique inverse which can readily be evaluated via numerical techniques such as direct methods, decomposition scheme, iterative methods, etc. In this research article, first of all an algorithm which has fourth order rate of convergency with conditional stability will be proposed. ...

Ali Maghari, Zahra Safaei

In this work, we have calculated the Joule-Thomson inversion curve of two important associating fluids, namely water and methanol, from the SAFT equation of state. Comparisons with the available experimental data, for water and methanol indicate that this molecular based equation of state gives good prediction of the low temperature branch; but, unfortunately, due to lack of isenthalpic dat...

Journal: :The Journal of the Acoustical Society of America 2004
Paul Hursky Michael B Porter B D Cornuelle W S Hodgkiss W A Kuperman

The use of adjoint modeling for acoustic inversion is investigated. An adjoint model is derived from a linearized forward propagation model to propagate data-model misfit at the observation points back through the medium to the medium perturbations not being accounted for in the model. This adjoint model can be used to aid in inverting for these unaccounted medium perturbations. Adjoint methods...

Journal: :The Journal of the Acoustical Society of America 2002
Martin Siderius Peter L Nielsen Peter Gerstoft

The MAPEX2000 experiments were conducted in the Mediterranean Sea in March, 2000 to determine seabed properties using a towed acoustic source and receiver array. Towed systems are advantageous because they are easy to deploy from a ship and the moving platform offers the possibility for estimating spatially variable (range-dependent) seabed properties. In this paper, seabed parameters are deter...

ژورنال: اقیانوس شناسی 2022

Background and Objectives: Different types of instability occur at sea. Layered structures are one of the most important physical phenomena in marine environments. Static stability and double diffusion are associated with density changes with respect to depth and temperature and salinity gradients, respectively. Due to the difference in temperature and salinity in the water column, marine areas...

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