نتایج جستجو برای: beta

تعداد نتایج: 187153  

The notion of contra continuous functions was introduced and investigated by Dontchev. In this paper, we apply the notion of $beta^{*}$-closed sets in topological space to present and study a new class of functions called contra $beta^{*}$-continuous and almost contra $beta^{*}$-continuous functions as a new generalization of contra continuity.

Journal: :Physical review 2022

We discuss up-to-date constraints on the Majorana neutrino mass $m_{\beta\beta}$ from neutrinoless double beta decay ($0\nu\beta\beta$) searches in experiments using different isotopes: KamLAND-Zen and EXO ($^{136}$Xe), GERDA MAJORANA ($^{76}$Ge) CUORE ($^{130}$Te). Best fits upper bounds are explored general landscape of nuclear matrix elements (NME), as well for specific NME values obtained r...

Journal: :تحقیقات مالی 0
رضا تهرانی دانشکده مدیریت مسلم پیمانی

in this article the researcher, comparing semivariance and calculated beta on basis of it to the variance and common beta, has tried to see whether downside beta criteria (semivariance and calculated beta on basis of it) have any preference over the common risk criteria (variance and common bata) or not. in order to achieve this, weekly data of 55 sample companies were gathered in a 6-year peri...

Objective(s): The purpose of this research is to study the effect of beta spectrum on absorbed fraction ( ) and to find suitable analytical functions for beta spectrum absorbed fractions in spherical and ellipsoidal volumes with a uniform distribution for several radionuclides that are commonly used in nuclear medicine.Methods: In order to obtain the beta particle absorbed fraction, Monte Carlo...

Journal: :Acta Mathematica Hungarica 2021

Let $E$ be the self-similar set generated by {\it iterated function system} {\[ f_0(x)=\frac{x}{\beta},\quad f_1(x)=\frac{x+1}{\beta}, \quad f_{\beta+1}=\frac{x+\beta+1}{\beta} \]}with $\beta\ge 3$. {Then} is a with complete {overlaps}, i.e., $f_{0}\circ f_{\beta+1}=f_{1}\circ f_1$, but not totally self-similar. We investigate all its generating systems, give spectrum of $E$, and determine Haus...

Journal: :Acta Mathematica Hungarica 2022

We consider the random $$\beta$$ -transformation $$K_{\beta}$$ , defined on $$\{0,1\}^{\mathbb{N}}\times[0,\frac{\lfloor\beta\rfloor]}{\beta-1}]$$ ], that generates all possible expansions of form $$x=\sum_{i=0}^{\infty}\frac{a_i}{\beta^i}$$ where $$a_i\in \{0,1 \ldots,\lfloor\beta\rfloor\}$$ }. This transformation was introduced in [3–5], two natural invariant ergodic measures were found. The ...

ژورنال: :روانشناسی تربیتی 0
دکتر مسیب یارمحمدی واصل عضو هیأت علمی دانشگاه بوعلی‏سینا

هدف این پژوهش شناخت پیش‏بینی‏کننده‏های اضطراب‏ریاضی و رابطه آن با افت تحصیلی ریاضی دانش‏آموزان‏دوره‏ راهنمایی استان‏‏خراسان‏‏شمالی‏ بوده‏ است. طراح ‏پژوهش‏ علی- مقایسه‏ایی یا پس رویدادی بود، که بر روی 438 نفر از دانش‏آموزان استان خراسان شمالی (تعداد 288 نفر که در درس ریاضی نمره کمتر از 10 و تعداد 150 نفر نمره بیشتر از 17 کسب کرده بودند) انجام شد. پرسشنامه‏های پژوهش شامل اضطراب ریاضی، خودپنداره ...

Journal: :مهندسی بیوسیستم ایران 0
آزیتا قربانی مدرس دانشگاه پیام نور مریم حسینی دانشگاه شهید مدنی تبریز سیروس ابراهیمی دانشگاه صنعتی سهند تبریز

beta-carotene is a carotenoid and known as the most famous natural pigment. microalgae are the most important sources for beta-carotene production. due to the high sterilization cost of pure culture, in this study for the first time, growth, amounts of beta-carotene and chlorophyll in caspian sea microalgae under nutrient deficiencies stress, have been measured and compared with pure microalgae...

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