نتایج جستجو برای: کوپلینگ 3d

تعداد نتایج: 188749  

ژورنال: :تحقیقات آب و خاک ایران 2011
علی اصغر منتظر سعید عیسی پور

طراحی و بهره برداری سنّتی شبکه های آبیاری به دلیل عدم وجود ابزارهای تطبیق قوانین بهره برداری با نیازهای متغیّر زمانی آب، تلفات قابل ملاحظه ای را در این سامانه ها به وجود می آورد. از این رو تحقیق در نحوه مدیریت بهره برداری و تعیین روش ها و ابزار کنترل مناسب در شبکه های آبیاری، امری ضروری می نماید که با به خدمت گرفتن مدل های هیدرودینامیک و طراحی و اجرای سیستم های کنترل خودکار مناسب انجام پذیر است. ...

ژورنال: :مهندسی مکانیک مدرس 2014
یوسف حجت کیوان کاکاوند مجتبی قدسی علی اضغر مداح

در این مقاله مدل جدیدی برای پاسخ سیال مگنتورئولوژیکال به ورودی جریان در حالت گذرا ارائه شده است. اکثر مدل های ارائه شده برای این سیال مربوط به حالت پایدار سیال بوده و در مدل های معدودی که برای حالت گذرا ارائه شده ورودی جریان الکتریکی به صورت پله ای و نرخ برش ثابت فرض شده است. در مدلی که در این پژوهش برای حالت گذرای سیال مگنتورئولوژیکال توسعه داده شده، جریان الکتریکی ورودی به صورت تابع نمایی و ن...

Journal: :journal of paramedical sciences 0
yalda zarnegar nia proteomics research center, shahid beheshti university of medical sciences, tehran hamid alavi majd department of biostatistics, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran mona azodi department of biology. faculty of basic science, islamic azad university science and research branch, tehran nasibeh khayyer proteomics research center, shahid beheshti university of medical sciences, tehran

a thorough recognition of the nature and duties of the genes is based upon having adequate information about the proteins. however, the proteomic projects follow a slow trend; therefore, solving the protein-related problems has become as one of the most important challenges in bio-informatics. consequently, the presence of tools which can enhance the structural recognition, classification, and ...

The advent of 3D printers has been embraced globally within few years of its emergence. The surge in the acceptability of rapid manufacturing RM technology can be attributed to the depletion and cost of natural resources, waste reduction and sustainability criterion of manufactured parts. This rapidly evolving 3D printing technologies is predicted to grow exponentially especially for the manufa...

Alireza Miremadi Mansoor Aminilari Roya Hassanian-esfahani

Lack of trust is one of the key bottle necks in e-commerce development. Nowadays many advanced technologies are trying to address the trust issues in e-commerce. One among them suggests using suitable user interfaces. This paper investigates the functionality and capabilities of 3D graphical user interfaces in regard to trust building in the customers of next generation of B2C e-commerce websit...

In this work, the triple convolution of Daubechies wavelet is used to solve the three dimensional (3D) microscale Dual Phase Lag (DPL) problem. Also, numerical solution of 3D time-dependent initial-boundary value problems of a microscopic heat equation is presented. To generate a 3D wavelet we used the triple convolution of a one dimensional wavelet. Using convolution we get a scaling function ...

Journal: :journal of craniomaxillofacial research 0
mohammad bayat oral and maxillofacial surgery department, school of dentistry, tehran university of medical sciences, tehran, iran. craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. tahereh padeganeh oral and maxillofacial surgery department, school of dentistry, tehran university of medical sciences, tehran, iran. craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. ahmad javaheri craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. naghmeh bahrami oral and maxillofacial surgery department, school of dentistry, tehran university of medical sciences, tehran, iran. craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. iranian tissue bank & research center, tehran university of medical sciences, tehran, iran.

background : improvement of facial beauty is a major reason why patients with dentofacial problems opt for orthognathic surgery. people are eventually judged by their facial appearance by themselves, their friends & family and even surgeons. with the recent developments in technology, we now have a 3d structure that can build and analyze 3d images before & after surgery and review the extent of...

Journal: :the archives of bone and joint surgery 0
tessa drijkoningen orthopaedic hand and upper extremity service, massachusetts general hospital, boston, usa robert knotter emergency department, reinier de graaf gasthuis, delft, the netherlands frank j. beeres surgery department, medisch centrum haaglanden, den haag, the netherlands emile g. coerkamp radiology department, medisch centrum haaglanden, den haag, the netherlands anton h.j. koning department of bioinformatics, erasmus mc university medical center, rotterdam, netherlands steven j. rhemrev surgery department, medisch centrum haaglanden, den haag, the netherlands

background: the i-space is a radiological imaging system in which computed tomography (ct)-scans can be evaluated as a three dimensional hologram. the aim of this study is to analyze the value of virtual reality (i-space) in diagnosing acute occult scaphoid fractures.   methods: a convenient cohort of 24 patients with a ct-scan from prior studies, without a scaphoid fracture on radiograph, yet ...

Journal: :journal of dental materials and techniques 0
hossein dashti 1. dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. 2. assistant professor of prosthetic department, school of dentistry, mashhad university of medical sciences, mashhad, iran azizollah moraditalab 1. dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. 2. assistant professor of prosthetic department, school of dentistry, mashhad university of medical sciences, mashhad, iran mohammadreza mohammadi 1. dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. 2. assistant professor of prosthetic department, school of dentistry, mashhad university of medical sciences, mashhad, iran hamidreza rajati haghi 1. dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. 2. assistant professor of prosthetic department, school of dentistry, mashhad university of medical sciences, mashhad, iran

purpose:dental shade guides are commonly used for color determination and should be disinfected and sterilized. the purpose of this study was to evaluate the color change of vita 3d master shade tabs after disinfection and sterilization. material and methods:overall, 98 samples (shade tabs) were randomly selected from 14 new, unused vita 3d sets, including the following shades: 2m1, 3l1.5, 3m1,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی برق 1386

در این پایان نامه سعی کرده ایم برای یک سری از ساختارهای خطوط انتقالی که عموما با روش های عددی یا با استفاده از نرم افزارهای full wave حل می شوند، مدلی ساده و در عین حال دقیق ارایه دهیم که می تواند رفتار مدل فیزیکی را از دید پایانه ها به خوبی پیش بینی کند. این ساختار خطوط انتقال میکرواستریپی می شوندکه در بردهای pcb چند لایه به صورت عمود بر هم قرار می گیرند. خطوط مایکرواستریپ عمود برهم به دلیل ...

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