نتایج جستجو برای: شبکه z

تعداد نتایج: 185117  

2008
Yurong Xin Giulio Quarta Hin Hark Gan Tamar Schlick

Recent studies of mammalian transcriptomes have identified numerous RNA transcripts that do not code for proteins; their identity, however, is largely unknown. Here we explore an approach based on sequence randomness patterns to discern different RNA classes. The relative z-score we use helps identify the known ncRNA class from the genome, intergene and intron classes. This leads us to a fracti...

2013
Wendy Van Lippevelde Saskia J. Te Velde Maïté Verloigne Maartje M. Van Stralen Ilse De Bourdeaudhuij Yannis Manios Elling Bere Froydis N. Vik Nataša Jan Juan M. Fernández Alvira Mai J. M. Chinapaw Bettina Bringolf-Isler Eva Kovacs Johannes Brug Lea Maes

OBJECTIVE To investigate associations of family-related factors with children's breakfast consumption and BMI-z-score and to examine whether children's breakfast consumption mediates associations between family-related factors and children's BMI-z-score. SUBJECTS Ten- to twelve-year-old children (n = 6374; mean age = 11.6 ± 0.7 years, 53.2% girls, mean BMI-z-score = 0.4 ± 1.2) and one of thei...

2015
Jing-Qiu Ma Li-Li Zhou Yan-Qi Hu Shan-Shan Liu Xiao-Yang Sheng

BACKGROUND Inappropriate feeding practices during infancy may lead to overweight. The aims of this study are to investigate the growth of children in the first 18 months of life; to evaluate the feeding practices of caregivers using developed Young Child Feeding Questionnaire; and to investigate caregivers' feeding attitudes and behaviors associated with infants' weight status. METHODS Six mo...

Journal: :Linear Algebra and its Applications 1997

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1378

یکی از مهمترین پدیده های دینامیکی سیستم قدرت که در محدوده زمانی یک تا چند ثانیه اتفاق می افتد و عموما" منجر به عملکرد اشتباه رله های حفاظتی می شود، نوسان توان است . این پدیده با وقوع خطایی در سیستم قدرت و نوسانی شدن متغیرهای ولتاژ و جریان اتفاق می افتد. در این حالت امپدانس دیده شده توسط رله های دیستاس موجود در شبکه (z v/i) نوسانی شده و ممکن است وارد یکی از نواحی عملکرد حفاظتی رله ها شود و در نه...

Journal: :Bulletin of the Belgian Mathematical Society - Simon Stevin 2011

2013
Jonathan A. Mitchell Hakon Hakonarson Timothy R. Rebbeck Struan F.A. Grant

OBJECTIVE To determine whether previously identified adult obesity susceptibility loci were associated uniformly with childhood BMI across the BMI distribution. DESIGN AND METHODS Children were recruited through the Children's Hospital of Philadelphia (n = 7,225). Associations between the following loci and BMI were assessed using quantile regression: FTO (rs3751812), MC4R (rs12970134), TMEM1...

Journal: :iranian journal of science and technology (sciences) 2008
j. behboodian

let x ,..., xn 1 be a random sample from a distribution with sample mean x and samplevariance s 2. in this paper we consider certain very general properties of the so-called “z-scores”x x s i n i ( − )/ : = 1,...., . a representation theorem is then given for z-scores obtained from an underlyingnormal population, together with a theorem for their limiting distribution as the sample size tends t...

Journal: :international journal of group theory 0
r sharma indian institute of technology delhi pooja yadav kamla nehru college, university of delhi, delhi kanchan joshi department of mathematics, university of delhi, delhi

in this paper we consider the group algebra $r(c_2times‎ ‎d_infty)$‎. ‎it is shown that $r(c_2times d_infty)$ can be‎ ‎represented by a $4times 4$ block circulant matrix‎. ‎it is also‎ ‎shown that $mathcal{u}(mathbb{z}_2(c_2times d_infty))$ is‎ ‎infinitely generated‎.

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