نتایج جستجو برای: apopestes spectrum

تعداد نتایج: 223763  

Journal: :bulletin of the iranian mathematical society 2015
a. abdollahi s. mehrangiz t. roientan

let $varphi(z)=z^m, z in mathbb{u}$, for some positive integer $m$, and $c_varphi$ be the composition operator on the bergman space $mathcal{a}^2$ induced by $varphi$. in this article, we completely determine the point spectrum, spectrum, essential spectrum, and essential norm of the operators $c^*_varphi c_varphi, c_varphi c^*_varphi$ as well as self-commutator and anti-self-commutators of $c_...

Background: Joint attention has received a lot of attention by researchers and specialists of autism spectrum disorder in recent years and refers to a developmental skill resulting in joining attention or processing messages of others. Defect in growth of joint attention is particular to children with autism spectrum disorder and is one of the symptoms for diagnosing autism spectrum disorder in...

مولوی, علی‌اصغر,

 In this paper, an algorithm base on Monte Carlo simulation for pileup effect in gamma spectrum of a detection system is presented whose its code was written in FORTRAN language. The code can be run in paralayzable and nonparalazable mode to obtain the pileup distortion and value of pulses pileup for any detection system. The result show, that the computed spectrum of 137Cs is in good agreement...

In this paper, we define the new notion of quasi-prime ideal which generalizes at once both prime ideal and primary ideal notions. Then a natural topology on the set of quasi-prime ideals of a ring is introduced which admits the Zariski topology as a subspace topology. The basic properties of the quasi-prime spectrum are studied and several interesting results are obtained. Specially, it is pro...

Background: Children with autism spectrum face many problems with adaptive behavior and consequently parents are faced with more mental health problems. The goal of this study is to investigate the relationship between stress and coping styles of mothers and autism spectrum disorder with adaptive behavior in children. Method: The research design is the correlation-descriptive. The study populat...

Journal: :international journal of advanced biological and biomedical research 0
asra sadat talebi m.sc graduated of medical physics, department of medical physics, semnan university of medical sciences, semnan, iran payman hejazi assistant professor, department of medical physics, semnan university of medical sciences, semnan, iran majid jadidi associate professor, department of medical physics, semnan university of medical sciences, semnan, iran raheb ghorbani professor, head of social determinants of health research center, semnan university of medical sciences, semnan, iran

medical linear accelerators are one of the most widespread methods for cancer treatment. despite their advantages, unwanted photoneutrons are produced by high energy linacs. this photoneutrons are as undesired doses to patients and a significant problem for radiation protection of the staffs and patients. photoneutrons radiological risk must be evaluated because of their high let and range.in o...

Journal: :فیزیک زمین و فضا 0
اکو علیپور دانشجوی کارشناسی ارشد ژئومغناطیس-دانشگاه شاهرود محمد حسن محمدیان دانشجوی کارشناسی ارشد ژئومغناطیس- دانشگاه شاهرود حمید آقاجانی استادیار، دانشکدۀ معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود، ایران

determination of boundary surface structures is commonly used for data interpretation. horizontal and vertical derivatives are useful tool for determining the edges boundary. using horizontal and vertical derivative in signal analysis method; that is effective method for interpretation of edges boundary, have been used commercially.in acquisition potential field data, using different methods of...

Let $varphi(z)=z^m, z in mathbb{U}$, for some positive integer $m$, and $C_varphi$ be the composition operator on the Bergman space $mathcal{A}^2$ induced by $varphi$. In this article, we completely determine the point spectrum, spectrum, essential spectrum, and essential norm of the operators $C^*_varphi C_varphi, C_varphi C^*_varphi$ as well as self-commutator and anti-self-commutators of $C_...

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