نتایج جستجو برای: multiple building diffractions
تعداد نتایج: 959959 فیلتر نتایج به سال:
ABSTRACT In Inter-Noise 2013, the authors presented a study comparing acoustic propagation measurements over a 1:100 scale model of a real-life urban topography and large-scale three-dimensional finite-difference timedomain simulations. The results were presented in octave-band sound pressure levels. As a sequel to the 2013 paper, this paper compares the results in time domain. The waveforms of...
Residual Stress Measurements by X-ray and Neutron Diffractions in Heat-Treated SiCw/A2014 Composites
Residential buildings are the main consumer of materials in construction industry. Selection of appropriate materialled to a great impact on quality of architecture in many aspects. Considering the extent of construction in the residential sector, study on this context seems necessary. Therefore the aim of this study is to represent a “materials selection model” for residential building facade ...
The complexes trans-[PtBr2(NCNR2)2] (R2 = Me21, (CH2)52) were cocrystallized with 1,1,2,2-tetrabromoethane (tbe) in CH2Cl2 forming solvates 1·tbe and 2·tbe, respectively. In both solvates, tbe involved halogen bonding, viz. the C–Br···Br–Pt interactions, detected by single-crystal X-ray diffractions experiments. Appropriate density functional theory calculations (M06/def2-TZVP) performed for is...
the major aim of this study was to investigate the relationship between iq, eq and test format in the light of test fairness considerations. this study took this relationship into account to see if people with different eq and iq performed differently on different test formats. to this end, 90 advanced learners of english form college of ferdowsi university of mashhad were chosen. they were ask...
Multiple graphical representations can significantly improve learning, provided that students make connections between them. In doing so, they need to engage in sense-making processes to build up conceptual understanding of the connections, and in fluency-building processes to fast and effortlessly use perceptual properties to make connections. We investigate how these learning processes intera...
Road traffic noise is the most pervasive source of ambient outdoor pollution in Europe. Traffic prediction models vary parameterisation and therefore may produce different estimates levels depending on geographical setting terms emissions sources propagation field. This paper compares three such models: European standard, Common Noise Assessment Methods for EU Member States (hereafter, CNOSSOS)...
اغلب پروسس هایی که در صنایع و به خصوص صنایع شیمیایی وجود دارند ورودی و خروجی های متعددی دارند. کنترل این پروسس ها که به نام : mimo (multiple input-multiple - output) معروفند، به سادگی کنترل سیستم های تک ورودی و تک خروجی : siso (single input single output) نمی باشد. زیرا سیستم های mimo تداخلی بوده و استفاده از حلقه های متعدد به فرم معمول در اغلب موارد پاسخ های مناسبی بوجود نخواهد آورد. به همین د...
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