منابع مشابه
Learning transformed product distributions
We consider the problem of learning an unknown product distribution X over {0, 1}n using samples f (X) where f is a known transformation function. Each choice of a transformation function f specifies a learning problem in this framework. Information-theoretic arguments show that for every transformation function f the corresponding learning problem can be solved to accuracy ǫ, using Õ(n/ǫ2) exa...
متن کاملthe effects of integrating cooperative learning into vocabulary learning of elementary school students
the purpose of the research is to examine if integrating cooperative learning into vocabulary learning helps to increase word recognition of students in an elementary school in iran. it tries to investigate whether cooperative learning approach enables students to improve their language learning. this research used stad (students team achievement division) as a cooperative model in this study. ...
15 صفحه اولTransfer RNA Methylases and Transfer RNA-methylated Bases of Polyoma Virus-transformed and Spontaneously Transformed Mouse Culture Cells1
culture system, which included nontumorigenic control cells and both spontaneously and polyoma virus-trans formed cells. Even when the growth rates of the three cell types were equalized, the transfer RNA methylase activ ities of the transformed cells were at least twofold greater than the activity of the control cells. A twoto fourfold relative increase in 3-methylcytosine was found in the tra...
متن کاملTransfer RNA methylases and transfer RNA-methylated bases of polyoma virus-transformed and spontaneously transformed mouse culture cells.
culture system, which included nontumorigenic control cells and both spontaneously and polyoma virus-trans formed cells. Even when the growth rates of the three cell types were equalized, the transfer RNA methylase activ ities of the transformed cells were at least twofold greater than the activity of the control cells. A twoto fourfold relative increase in 3-methylcytosine was found in the tra...
متن کاملTransfer RNA Methylases of Normal Cells, Virus-transformed Cells, and Tumors Derived from Transformed Cells1
Transfer RNA methylases (rate and capacity) were studied in normal cells and tissues, in RNA and DNA oncogenic virus-transformed cells, and in tumors derived from the transformed cells. The DNA oncogenic virus-transformed cells (SV40 and polyoma) contained greater tRNA methylase capacities than their nontransformed normal cells. In contrast, no difference was observed (capacity or rate) between...
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ژورنال
عنوان ژورنال: Language Learning
سال: 2013
ISSN: 0023-8333
DOI: 10.1111/j.1467-9922.2012.00740.x