نتایج جستجو برای: function under class
تعداد نتایج: 2458148 فیلتر نتایج به سال:
A class G of graphs is said to be χ-bounded if there is a function f : N → R such that for all G ∈ G and all induced subgraphs H of G, χ(H) ≤ f(ω(H)). In this paper, we show that if G is a χ-bounded class, then so is the closure of G under any one of the following three operations: substitution, gluing along a clique, and gluing along a bounded number of vertices. Furthermore, if G is χ-bounded...
a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...
دربررسی شیوع ترومبوز بطن چپ و رابطه آن با نوع و دفعات آنفارکتوس و درجه نارسائی قلبی (killip class)، مطالعه اکوکاردیوگرافی در 60 بیمار انجام شد . در مجموع 14 ترومبوز یافت شد . 37 بیمار آنفارکتوس قدامی داشتند که 12 مورد با lvt همراه بود . 10بیمار آنفارکتوس باردوم آنها بود که 8 مورد lvt داشتند. 18 بیمار در killip class iii بودند که 8 مورد lvt مشاهده شد. تمام بیماران آکینزی یا دیسکینزی آپیکال داشتن...
We study minimax rates of convergence for nonparametric regression and prediction under a random design with dependent errors. It is shown that dependence among errors in general does not hurt a prediction of the next response. For estimating the regression function, however, dependence may damage the minimax rate of convergence. Under the assumption that the errors are independent of the expla...
abstract in first part of this project, the use of a new and biguanid-like catalyst supported on silica as a recyclable catalyst provides a new route for the synthesis of a variety of arylalkylidene rhodanine derivatives through knoevenagle reaction in at present of solvent at room temperature. rhodanine derivatives and especially arylalkylidene rhodanines have proven to be attractive compound...
in this paper, exp-function and (g′/g)expansion methods are presented to derive traveling wave solutions for a class of nonlinear space-time fractional differential equations. as a results, some new exact traveling wave solutions are obtained.
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