نتایج جستجو برای: chestermans theory

تعداد نتایج: 782121  

Journal: :پیشرفت های حسابداری 0
غلامرضا کرمی ساسان مهرانی هدی اسکندر

journal of accounting advances (j.a.a) vol. 2, no. 2, fall & winter 2010, ser. 59/3     extended abstract   an investigation of agency theory and signaling theory in dividend policies: the role of institutional investors   dr. g. r. karami         dr. s. mehrani               h. eskandar tehran university   introduction        dividend has a special position among decision makers. dividend poli...

Journal: :journal of solid mechanics 0
m karimi department of mechanical engineering, isfahan university of technology, isfahan, iran a.r shahidi department of mechanical engineering, isfahan university of technology, isfahan, iran

in this article, surface stress and nonlocal effects on the biaxial and uniaxial buckling of rectangular silver nanoplates embedded in elastic media are investigated using finite difference method (fdm). the uniform temperature change is utilized to study thermal effect. the surface energy effects are taken into account using the gurtin-murdoch’s theory. using the principle of virtual work, the...

Journal: :معماری و شهرسازی آرمان شهر 0
mohammad jalili instructor, faculty of architecture, borujerd branch, islamic azad university, borujerd, iran. alireza einifar professor, school of architecture, college of fine arts, university of tehran, tehran, iran. gholamreza talischi assistant professor, faculty of art and architecture, bu-ali sina university, hamedan, iran.

this study aimed to investigate the spatial perception and evaluation of the place-based affordance of mosques in tehran. reviewing the literature and applying gibson`s affordance and canter`s place theory, the new model called place-based affordance is proposed. in this model, each location contains two potential types of symbolic and behavioural affordance. accordingly, throughout history, be...

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
m. r. nami m. janghorban

in this article, an analytical solution is developed to study the free vibration analysis offunctionally graded rectangular nanoplates. the governing equations of motion are derived basedon second order shear deformation theory using nonlocal elasticity theory. it is assumed that thematerial properties of nanoplate vary through the thickness according to the power lawdistribution. our numerical...

Journal: :iranian journal of materials forming 2014
m.r. nami m. janghorban

in this research, the bending analysis of rectangular nanoplates subjected to mechanical loading is investigated. for this purpose, the strain gradient elasticity theory with one gradient parameter is presented to study the nanoplates. from the best knowledge of authors, it is the first time that the exponential shear deformation formulation based on strain gradient elasticity theory is carried...

Journal: :physical chemistry research 0
fatemeh houshmand adepartment of chemistry, k. n. toosi university of technology, p. o. box 15875-4416, tehran, iran. seifollah jalili k. n. toosi university of technology jeremy schofield

graphyne and graphdiyne families of flat carbon (sp2/sp) networks with high degrees of π-conjunction are attracting much attention due to their promising electronic, optical, and mechanical properties. in the present investigation we have studied the structural, mechanical, electrical and optical properties of halogenated graphdiyne and graphyne. the optical spectra of pure and halogenated stru...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و - پژوهشکده علوم نانو 1392

among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...

Journal: :bulletin of the iranian mathematical society 0
j. baldwin university of illinois at chicago t. hyttinen department of mathematics and statistics university of helsinki m. kesala department of mathematics and statistics university of helsinki

we study the history and recent developments in nonelementarymodel theory focusing on the framework of abstractelementary classes. we discuss the role of syntax and semanticsand the motivation to generalize first order model theory to nonelementaryframeworks and illuminate the study with concrete examplesof classes of models. this first part introduces the main conceps and philosophies anddiscu...

Journal: :iranian red crescent medical journal 0
tahereh fathi najafi phd student in reproductive health, student research committee, department of midwifery, school of nursing and midwifery, mashhad university of medical sciences, mashhad, ir iran robab latifnejad roudsari associated professor, evidence-based care research centre, department of midwifery, school of nursing and midwifery, mashhad university of medical sciences, mashhad, ir iran; associated professor, evidence-based care research centre, department of midwifery, school of nursing and midwifery, mashhad university of medical sciences, mashhad, ir iran. tel: +98-5138591511, fax: +98-5138591516 hossein ebrahimipour associate professor in health services management, management and social determinant of health research center, school of health, mashhad university of medical sciences, department of health care management narjes bahri phd student in reproductive health, student research committee, department of midwifery, school of nursing and midwifery, mashhad university of medical sciences, mashhad, ir iran

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