نتایج جستجو برای: additive mapping

تعداد نتایج: 264411  

Journal: :Int. J. Math. Mathematical Sciences 2004
Joso Vukman Irena Kosi-Ulbl

out, R will represent an associative ring with center Z(R). As usual the commutator xy−yx will be denoted by [x,y]. We will use basic commutator identities [xy,z] = [x,z]y+x[y,z] and [x,yz]= [x,y]z+y[x,z]. Recall that a ring R is prime if aRb = (0) implies that a = 0 or b = 0, and is semiprime if aRa = (0) implies a = 0. An additive mapping x x∗ on a ring R is called involution in case (xy)∗ = ...

Journal: :علوم گیاهان زراعی ایران 0
معروف خلیلی عضو هیأت علمی دانشگاه پیام نور، دانشجوی دکتری اصلاح نباتات دانشگاه تبریز محمود تورچی استاد دانشکدۀ کشاورزی دانشگاه تبریز سعید اهری زاد دانشیار، دانشکدۀ کشاورزی دانشگاه تبریز محمد مقدم استاد دانشکدۀ کشاورزی دانشگاه تبریز سید علی پیغمبری استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران

to investigate variation and detect of genomic regions controlling quality and quantity of malt extract in barely, a study was conducted using a set of 72 double haploid barley lines as well as their parents (stepto & morex) at experimental stations of university of mahabad and agricultural research center of mian'doab in rcbd with two replications during cropping season (2011-12). differe...

2015
Jia Wen Xinwang Zhao Guorong Wu Dan Xiang Qing Liu Su-Hong Bu Can Yi Qijian Song Jim M. Dunwell Jinxing Tu Tianzhen Zhang Yuan-Ming Zhang

Heterosis refers to the phenomenon in which an F1 hybrid exhibits enhanced growth or agronomic performance. However, previous theoretical studies on heterosis have been based on bi-parental segregating populations instead of F1 hybrids. To understand the genetic basis of heterosis, here we used a subset of F1 hybrids, named a partial North Carolina II design, to perform association mapping for ...

2017
Peifa Liu Yusheng Zhao Guozheng Liu Meng Wang Dandan Hu Jun Hu Jinling Meng Jochen C. Reif Jun Zou

Genomics-based prediction of hybrid performance promises to boost selection gain. The main goal of our study was to investigate the relevance of additive, dominance, and epistatic effects for determining hybrid seed yield in a biparental rapeseed population. We re-analyzed 60,000 SNP array and seed yield data points from an immortalized F2 population comprised of 318 hybrids and 180 parental li...

Journal: :Biostatistics 2004
Jonathan L French Matthew P Wand

Maps depicting cancer incidence rates have become useful tools in public health research, giving valuable information about the spatial variation in rates of disease. Typically, these maps are generated using count data aggregated over areas such as counties or census blocks. However, with the proliferation of geographic information systems and related databases, it is becoming easier to obtain...

Journal: :Journal of manufacturing and materials processing 2021

This article develops and demonstrates a set of design-focused manufacturability constraints for the fused deposition modeling/fused filament fabrication (FDM/FFF) process. These can be mapped from basic behavior process characteristics formulated in terms implicit or explicit design constraints. When FDM/FFF is explored examined its natural limitations behavior, it provide manufacturing consid...

2011
Zu-Ping Zheng Xiao-Hong Liu Xun Wu Yong-Si Zhang Chuan He

Ear axis weight (EAW) is one of the important agronomic traits in maize (Zea mays L.), related to yield. To understand its genetic basis, a recombinant inbred line (RIL) population, derived from the cross Mo17 × Huangzao4, was used for quantitative trait locus mapping (QTL) for EAW under high and low nitrogen (N) regimes. The results showed that a total of three QTLs were mapped on chromosomes ...

2015
Joshua S. Bloom Iulia Kotenko Meru J. Sadhu Sebastian Treusch Frank W. Albert Leonid Kruglyak

Genetic mapping studies of quantitative traits typically focus on detecting loci that contribute additively to trait variation. Genetic interactions are often proposed as a contributing factor to trait variation, but the relative contribution of interactions to trait variation is a subject of debate. Here, we use a very large cross between two yeast strains to accurately estimate the fraction o...

2015
Joshua S. Bloom Iulia Kotenko Meru J. Sadhu Sebastian Treusch Frank W. Albert Leonid Kruglyak

Genetic mapping studies of quantitative traits typically focus on detecting loci that contribute additively to trait variation. Genetic interactions are often proposed as a contributing factor to trait variation, but the relative contribution of interactions to trait variation is a subject of debate. Here we use a very large cross between two yeast strains to accurately estimate the fraction of...

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