نتایج جستجو برای: digital
تعداد نتایج: 307822 فیلتر نتایج به سال:
background : due to rapid advances in modern technologies such as telecommunication technology, the world has witnessed an exponential growth in the use of digital handheld devices (e.g. smartphones and tablets). this drastic growth has resulted in increased global concerns about the safety of these devices. smartphones, tablets, laptops, and other digital screens emit high levels of short-wave...
this prospective longitudinal study deals with the associations between digital disorders and reproduction indices in dairy cattle on a farm in the vicinity of tehran. it was carried out on 225 postparturient holstein heifers. the evaluation of lameness due to digital disorders on postpartum period of heifers were done and after diagnosis of lameness (based on a 5 points lameness scoring system...
introduction: the aim of this study was to compare digital and conventional radiography in determining the working length of dilacerated canals.methods: thirty nine human extracted single-rooted teeth with root curvature more than 35 degrees were included in this study. after access preparation, a file was inserted into the canal and advanced until the file tip was visualized at the foramen. wi...
this survey attempts to study and interpret the deployment of ict by faculty members of departments of education in universities of iran. descriptive analytical method was used as the research method. questionnaires were distributed among 600 full-time faculty members of education in universities of iran. 410 (68.3%) respondents replied and completed questionnaires. spss was used to analyze the...
Introduction & Objective: Tinnitus is one of the most common otologic complaints. This study was designed for evaluation of different kinds of hearing aids effectiveness in treatment of tinnitus in elderly patients in Hamadan. Materials & Methods: In this clinical trial study 27 referral patients with complaint of tinnitus and hearing loss to otolaryngology clinics in Hamadan during 2006-7 w...
Introdouction:The study aimed to compare the accuracy of proximal caries detection by dental practitioners using two different systems, direct digital system and conventional films, under routine environmental conditions. Materials and methods: Eleven extracted human posterior teeth were mounted on wax frames and were exposed using the direct digital system and conventional films. Seventy-four ...
Background & Objectives: Breast cancer is the most common cancer among women and one of the leading causes of death in the productivity ages. Mammography screening is the main method for the diagnosis of breast cancer. While analog mammography counts as the standard method of screening, the digital one can be an alternative. This review compared the effectiveness and safety of these technologie...
Radar Signal Processing has been an interesting area of research for realization of programmable digital signal processor using VLSI design techniques. Digital Signal Processing (DSP) algorithms have been an integral design methodology for implementation of high speed application specific real-time systems especially for high resolution radar. CORDIC algorithm, in recent times, is turned out to...
The Digital terrain model is an important geospatial product used as the basis of many practical projects related to geospatial information. Nowadays, a dense point cloud can be generated using the LiDAR data. Actually, the acquired point cloud of the LiDAR, presents a digital surface model that contains ground and non-ground objects. The purpose of this paper is to present a new approach of ex...
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