نتایج جستجو برای: digital
تعداد نتایج: 307822 فیلتر نتایج به سال:
In this paper, the notion of the digital divide has been described, and a few analyzing methods of digital divide have been reviewed. Analyzing methods of digital divide are called indices which have different indicators and different formulas for calculation. Since data collection for an indicator may be difficult, calculating an index is an essential problem. We collected and calculated some ...
In this paper, digital signal processing for precise gamma ray spectroscopy is presented. The basis of this system is a 14bit waveform digitizer which samples the output of pre-amplifier signals directly. The advantages and limitations of the digital spectrometer compared with analog spectrometer has been tested and analyzed from precise gamma ray spectroscopy point of view. The results shows t...
objectives: new digital two-dimensional imaging systems are considered as an easily accessible modality for sinonasal evaluation. the aim of this study was to assess the diagnostic efficacy of digital waters’ and caldwell’s radiographic views for evaluation of sinonasal area. materials and methods: a total of 273 patients fulfilling the inclusion criteria were enrolled in this descriptive-analy...
Background and Aim: This research is dedicated to assessing information behaviors of children and adolescents’ interaction with print and digital books. To reach this goal, digital books of Iranian virtual library for children and teenagers, have been used as sources of research. The purpose is assessing the influence of participants’ gender, age and graphical effects of books, with their prefe...
Introdouction: Canal length measurement is essential for proper endodontic treatment. Any error or miscalculation in working length determination, particularly in curved canals, can result in complications during or after root canal therapy. Digital radiography has enabled accurate measurement of curved canal length. In this study, we evaluated the accuracy of calibration of a complementary m...
Introduction: Various intraoral digital radiographic systems are available as an alternative to film-based radiography. Recent rapid progress in the field of digital radiography offers the possibility of image processing and manipulation. Pseudocolor filter is one of the tools of digital systems. The aim of this study was to compare diagnostic accuracy of proximal caries in black and white a...
Introduction: Radiography is one of the most important diagnostic methods for evaluation of dental caries. On the other hand, the least amount of radiation along with high quality is a main gold standard. The purpose of this study was to compare the diagnostic accuracy of Primax, Insight Radiographic films, and direct digital images (Schick CMOS-APS), in detection of interproximal natural Carie...
In recent years it has been trying that with regard to the question of computational complexity of discrete logarithm more strength and less in the elliptic curve than other hard issues, applications such as elliptic curve cryptography, a blind digital signature method, other methods such as encryption replacement DLP. In this paper, a new blind digital signature scheme based on elliptic curve...
human advancements in science and technology have also developed to libraries leading to the emergence of the phenomenon of the digital libraries. therefore, authors decided to open the new view in the development of science and technology by examining both the copyright and digital library. it seems that in the digital library we must distinguish between two types of public and private librari...
Abstract Plant growth and biomass assessments are required in production and research. Such assessments are followed by major decisions (e.g., harvest timing) that channel resources and influence outcomes. In research, resources required to assess crop status affect other aspects of experimentation and, therefore, discovery. Destructive harvests are important because they influence treatment s...
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