نتایج جستجو برای: high dimension
تعداد نتایج: 2152494 فیلتر نتایج به سال:
let r be an associative ring with identity, c(r) be the category of com-plexes of r-modules and flat(c(r)) be the class of all at complexes of r-modules. we show that the at cotorsion theory (flat(c(r)); flat(c(r))−)have enough injectives in c(r). as an application, we prove that for each atcomplex f and each complex y of r-modules, exti (f,x)= 0, whenever ris n-perfect and i > n.
Background and purpose: Machine learning is a class of modern and strong tools that can solve many important problems that nowadays humans may be faced with. Support vector regression (SVR) is a way to build a regression model which is an incredible member of the machine learning family. SVR has been proven to be an effective tool in real-value function estimation. As a supervised-learning appr...
ovary and ovarian bursa of twelve female reproductive organ, six samples from each immature and mature buffaloes were collected from slaughterhouse. all samples were transferred to anatomy department of veterinary college, and they studied morphologically and morphometrically, length, wide, and thickness of ovaries, deep and wide of opening of ovarian bursa were measured. additionally, dimensio...
This study aimed to provide model for professional competencies of industrial educators in the technical schools. The research method was developmental and functional and the method of data collection was sequential mixed. In qualitative section used phenomenological method and in quantitative approach researchers used survey method based on PLS and structural equation modeling. Participants in...
the application of a comprehensive model of communicative language ability (cla) to language teaching and testing has always been an imperative in l2 education since hymess proposal of communicative competence in the 1970s. recent l2 research has clearly underscored the importance of sufficient pragmatics representation as an essential component of cla in pedagogical and testing practices in l2...
abstract the present study was conducted to examine the effect of proficiency on students interaction while carrying out the grammar-based task(s) in collaboration. in particular, the study examines whether the level of proficiency affects the learners’ focus of attention to grammatical and lexical features. the study takes a further step and examines whether there is any difference in the use...
This study aimed to provide model for professional competencies of industrial educators in the technical schools. The research method was developmental and functional and the method of data collection was sequential mixed. In qualitative section used phenomenological method and in quantitative approach researchers used survey method based on PLS and structural equation modeling. Participants in...
Article history: Received 29 November 2015 Received in revised form 9 April 2016 Accepted 2 May 2016 Available online 6 May 2016
In this paper, we consider regression models with a Hilbert-space-valued predictor and a scalar response, where the response depends on the predictor only through a finite number of projections. The linear subspace spanned by these projections is called the effective dimension reduction (EDR) space. To determine the dimensionality of the EDR space, we focus on the leading principal component sc...
introduction: soil hydraulic conductivity is considered as one of the most important hydraulic properties in water and solutionmovement in porous media. in recent years, variousmodels as pedo-transfer functions, fractal models and scaling technique are used to estimate the soil saturated hydraulic conductivity (ks). fractal models with two subset of two (solid and pore) and three phases (solid,...
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