نتایج جستجو برای: incoherent formulation

تعداد نتایج: 118294  

Journal: :iranian journal of radiation research 0
e. kazemi department of radiology, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran s.m.j. mortazavi department of medical physics and medical engineering, school of medicine, shiraz university of medical sciences, shiraz, iran a. ali ghanbari department of electrical engineering, school of engineering, shiraz university, shiraz, iran h. mozdarani department of medical genetics, faculty of medical sciences, tarbiat modares university, tehran, iran s. sharif-zadeh department of immunology, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran z. mostafavi-pour department of biochemistry, shiraz university of medical sciences, shiraz, iran

background: induction of cellular response after exposure to electromagnetic fields is limited to coherent fields. an incoherent noise field is supposed to suppress the bioeffects of regular rf electromagnetic fields. the purpose of this study was to investigate the effect of gsm mobile phone-induced radiofrequency (rf) on the induction of oxidative stress in sp2/0 cell line. materials and meth...

2007
Amyn Poonawala Peyman Milanfar

Inverse lithography attempts to synthesize the input mask which leads to the desired output wafer pattern by inverting the forward model from mask to wafer. In this article, we extend our earlier framework for image prewarping to solve the mask design problem for coherent, incoherent, and partially coherent imaging systems. We also discuss the synthesis of three variants of phase shift masks (P...

2006
Amyn Poonawala Peyman Milanfar

Inverse lithography attempts to synthesize the input mask which leads to the desired output wafer pattern by inverting the forward model from mask to wafer. In this article, we extend our earlier framework for image prewarping to solve the mask design problem for coherent, incoherent, and partially coherent imaging systems. We also discuss the synthesis of three variants of phase shift masks (P...

The effects of including incoherent (bound-electron) and coherent (Rayleigh) scattering in exposure buildup factor calculations for point isotropic gamma ray sources, penetrating a two-layer water-lead shield have been investigated in the gamma ray energy (E?) range of 40 keV to 3 MeV. Incoherent scattering decreases the values of these factors in both layers up to E? ~ 200 keV and the effect i...

A. Ali Ghanbari, E. Kazemi, F. Zal, H. Mozdarani, S. Haghdoost, S. Sharif-Zadeh, S.M.J. Mortazavi, Z. Mostafavi-pour,

Background: Induction of cellular response after exposure to electromagnetic fields is limited to coherent fields. An incoherent noise field is supposed to suppress the bioeffects of regular RF electromagnetic fields. The purpose of this study was to investigate the effect of GSM mobile phone-induced radiofrequency (RF) on the induction of oxidative stress in SP2/0 cell line. Materials and Meth...

Journal: :CoRR 2015
Lijun Zhang Tianbao Yang Rong Jin Zhi-Hua Zhou

In this paper, we provide a theoretical analysis of the nuclear-norm regularized least squares for full-rank matrix completion. Although similar formulations have been examined by previous studies, their results are unsatisfactory because only additive upper bounds are provided. Under the assumption that the top eigenspaces of the target matrix are incoherent, we derive a relative upper bound f...

2004
Miguel A. Lagunas Ana I. Perez-Neira

The problem of spectral subtraction, to estimate the parameters of a single source in colored noise, is used to show the relationships between the likelihood formulation and spectral density estimation. Reported previously as a filter bank processing for spectral estimation, it is shown that the normalized Capon estimate is the natural tool for source location in I-d and 2-d scenarios when the ...

2000
Miguel A. Lagunas Ana I. Perez-Neira

The problem of spectral subtraction, to estimate the parameters of a single source in colored noise, is used to show the relationships between the likelihood formulation and spectral density estimation. Reported previously as a filter bank processing for spectral estimation, it is shown that the normalized Capon estimate is the natural tool for source location in 1-d and 2-d scenarios when the ...

2017
Dimche Kostadinov Slava Voloshynovskiy Sohrab Ferdowsi

Transform learning has been introduced and studied in [1],[2], [3] and [4]. An optimal transform learning for structured and overcomplete matrix was proposed in [5]. However, several issues (optimality, convergence and computational complexity) related to learning an incoherent, well-conditioned, non-structured and overcomplete sparsifing transform still remain open. Let X ∈ <N×L be a data matr...

2009
James Traer Peter Gerstoft H. C. Song William S. Hodgkiss

using adaptive beam forming, " [J. Abstract Abstract: Harrison [J. Acoust. Soc. Am. 125, 3511– 3513 (2009)] presented a mathematical explanation for a sign-inversion induced to the passive fathometer response by minimum variance distortionless response (MVDR) beamforming. Here a concise mathematical formulation is offered, which decomposes the cross-spectral density matrix into coherent and inc...

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