نتایج جستجو برای: frequencies of occurrence

تعداد نتایج: 21169344  

2004
Don U.A. Galagedera Elizabeth A. Maharaj

This paper investigates association between portfolio returns and higher-order systematic co-moments at different timescales obtained through wavelet multiscalinga technique that decomposes a given return series into different timescales enabling investigation at different return intervals. For some portfolios, the relative risk positions indicated by systematic co-moments at higher timescales ...

2010
Pingping Xiu Henry S. Baird

We describe a technique of linguistic post-processing of whole-book recognition results. Whole-book recognition is a technique that improves recognition of book images using fully automatic cross-entropy-based model adaptation. In previous published works, word recognition was performed on individual words separately, without awaring passage-level information such as word-occurrence frequencies...

مروتی, سعید, ناصری ارزنق, فاطمه,

Background and Objectives: Recurrent Spontaneous Abortions (RSA) is defined as the repeated occurrence of 2 or more miscarriages before 20th week of gestation. RSA is a multifactorial disorder and genetic defects are considered as one of the major risk factors for recurrent miscarriage. It seems the progesterone receptor gene polymorphisms to be one of the genetic factors involved in the occurr...

Journal: :iranian journal of blood and cancer 0
mahmoud nabavi abolhasan ghaderi mohammad javad fattahi navid danaie mohammad faranoush

background: systemic lupus erythematosus is a systemic autoimmune disorder with unclear etiology. the importance of some genes in the development of systemic lupus erythematosus has been implicated. the gene polymorphism in codon 72 has attracted a lot of attention and its role in the occurrence or progression of many cancers and autoimmune diseases especially systemic lupus erythematosus has b...

2003
T Heliö L Halme M Lappalainen H Fodstad P Paavola-Sakki U Turunen M Färkkilä T Krusius K Kontula

Background: Variants of the caspase activating recruitment domain 15/nucleotide oligomerisation domain 2 (CARD15/NOD2) gene have been associated with susceptibility to Crohn’s disease (CD). Aim: Our aim was to evaluate the allele frequencies of the CARD15 variants R702W, G908R, and 1007fs in Finnish inflammatory bowel disease (IBD) patients and to search for possible associations between CARD15...

Journal: :فیزیک زمین و فضا 0
جعفر معصوم پور سماکوش دانشگاه رازی کرمانشاه، دکترای اقلیم شناسی مرتضی میری دانشگاه تهران مجتبی رحیمی دانشگاه تهران

thunderstorms are regarded not only as a significant weather event but also as a key element in water and electricity cycles of the atmosphere. generally, researchers consider the intense weather instability as a result of convection in lower levels of the atmosphere with high levels enough of humidity. usually statistic instability, the humidity of lower levels of the atmosphere and lifting me...

Journal: :the journal of tehran university heart center 0
mehrdad sheikhvatan tehran heart center, tehran university of medical sciences, tehran, iran. mohammadali boroumand tehran heart center, tehran university of medical sciences, tehran, iran. mehrdad behmanesh department of human genetics, tarbiat modarres university, tehran, iran. seyed hesameddin abbasi tehran heart center, tehran university of medical sciences, tehran, iran. gholamreza davoodi tehran heart center, tehran university of medical sciences, tehran, iran. shayan ziaee tehran heart center, tehran university of medical sciences, tehran, iran.

background: the c1019t polymorphism of the connexin-37 (gja4) gene is a single-nucleotide polymorphisms involved in atherosclerotic plaque rupture and atherosclerosis predisposition. we examined the association between the c1019t polymorphism of the gja4 gene and the occurrence of myocardial infarction (mi) in patients with premature coronary artery disease (cad). methods: our study recruited 1...

Journal: :نشریه دانشکده فنی 0
دکتر یوسف حسن زاده

it has been proved that natural frequencies are stationary at the natural modes. also it has been shown that at the first mode it is a minimum and for systems with finite number of degrees of freedom the highest frequency is maximum (reference 1 and 2). beyond these statements nothing more can be said about the behavior of the natural frequencies without defining precisely the manner in which t...

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