نتایج جستجو برای: distribution co

تعداد نتایج: 925076  

Journal: :international journal of communications and information technology 2011
r. abaspour m. mehrjoo s. mohanna m. rezaei

co-channel interference is a major factor in limiting the capacity and link quality in cellular communications. as the co-channel interference is modeled by lognormal distribution, sum of the co-channel interferences of neighboring cells is represented by the sum of lognormal random variables (rvs) which has no closed-form expression. assuming independent, identically distributed (iid) rvs, the...

Journal: :caspian journal of environmental sciences 2014
f. karandish a. shahnazari

the present study was carried out to evaluate three interpolation methods including weighted moving average (wma) with the power of 2 and 3, kriging and cokriging methods. data of 23 wells in mazandaran province were collected in fall and spring 2006. seven parameters including electrical conductivity (ec), ph, total dissolved solids (tds), sodium adsorption ratio (sar), total hardness (th), ch...

Journal: :CAIS 2016
Varun Grover Jackie London Kevin Craig

In this paper, we examine the evolution of the institutional and intellectual structures of the IS field. We argue that, though the field’s institutional structures—academic programs, journals, conferences, and professional associations— have developed admirably, the state of the field’s intellectual structure is less clear. We employ a co-citation lens to analyze the development and evolution ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم و فنون مازندران 0

مدل روزنه های موازی موج دار (corrugated oarallel bundle model) برای تعریف اثر ساختمان روزنه ها در نفوذ-واکنش (diffusion and reaction) در کاتالیستهای متخلخل بکار می رود. در مدل روزنه های موج دار، از یک دسته روزنه های اصلی (pore) استفاده شده است . هر یک از این روزنه های اصلی دارای یکسری عناصر روزنه می باشد که هر عنصر دارای یک شعاع تعیین شده به صورت اتفاقی از یک توزیع اندازه روزنه ها (pore size di...

ژورنال: سلامت و محیط زیست 2016
اشرفی, خسرو, شفیع پور مطلق, مجید, موسوی, منیره سادات, نیک سخن, محمد حسین, وثوقی فر, حمید رضا,

Background and Objectives: In this study, contribution of exhaust emission and CO distribution was estimated in enclosed residential complex parking. Materials and Methods: This was a descriptive - analytical study consisted of two stages. In the first stage, the emission contribution of vehicles was determined. In order to determine the contribution of exhaust gas emissions, through gas spe...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
bhavna a. shah ajay v. shah pathik m. shah

salicylic acid-formaldehyde-m-cresol (sfm) terpolymer had been synthesized in dmf media by conventional method. the resulting resin had been characterized by ftir spectra, elemental and thermogravimetric analyses. the morphology of sfm resin had been studied by sem and optical photograph. various parameters like rate of equilibration, effect of ph on ion exchange capacity and effect of concentr...

Journal: :Journal of Quantitative Linguistics 2009
Animesh Mukherjee Monojit Choudhury Anupam Basu Niloy Ganguly

The sound inventories of the world’s languages self-organize themselves giving rise to similar cross-linguistic patterns. In this work we attempt to capture this phenomenon of self-organization, which shapes the structure of the consonant inventories, through a complex network approach. For this purpose we define the occurrence and co-occurrence networks of consonants and systematically study s...

Journal: :CoRR 2011
Fuxin Ren Xueqi Cheng Huawei Shen

For the study of citation networks, a challenging problem is modeling the high clustering. Existing studies indicate that the promising way to model the high clustering is a copying strategy, i.e., a paper copies the references of its neighbour as its own references. However, the line of models highly underestimates the number of abundant triangles observed in real citation networks and thus ca...

2001
Michael Dreyer Sug-Bong Choe Sung-Chul Shin

We report a technique to simultaneously determine the local activation magnetic moment with a spatial resolution of a submicrometer scale. The local activation magnetic moment is determined from the magnetic-field dependence of the magnetization reversal at the corresponding region observed by a magneto-optical microscope system. The present method has been applied to measure the activation mag...

Journal: :BMC infectious diseases 2016
Luis Furuya-Kanamori Shaohong Liang Gabriel Milinovich Ricardo J Soares Magalhaes Archie C A Clements Wenbiao Hu Patricia Brasil Francesca D Frentiu Rebecca Dunning Laith Yakob

BACKGROUND Chikungunya and dengue infections are spatio-temporally related. The current review aims to determine the geographic limits of chikungunya, dengue and the principal mosquito vectors for both viruses and to synthesise current epidemiological understanding of their co-distribution. METHODS Three biomedical databases (PubMed, Scopus and Web of Science) were searched from their incepti...

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