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495 articles for “distance”
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Research ArticleOpen accessIn the abstractContribution of the Entropy Function to the Study of Collimator for Nuclear Medicine ImagingM.S. Bouhdima, I. Elloumi, M.H.B. GhozlenScintigraphic image currently used in the diagnosis or the evaluation process of tissues, is strongly dependant on several technical parameters specially collimator characteristics. The present work describes a numerical method, based on entropy function, able to specify depth and hole diameter of collimator as well as other geometrical parameters to get a better accuracy in scintigraphy evaluation. From the classical … …American Journal of Applied Sciences, Vol. 4, Issue 10 · 31 Oct 2007 · 6,739 accessesView PDFCite
Research ArticleOpen accessIn the abstractFeature Selection in Data-Mining for Genetics Using Genetic AlgorithmV. N. Rajavarman, S. P. RajagopalanWe discovered genetic features and environmental factors which were involved in multifactorial diseases. To exploit the massive data obtained from the experiments conducted at the General Hospital, Chennai, data mining tools were required and we proposed a 2-Phase approach using a specific genetic algorithm. This heuristic approach had been chosen as the number of features to consider was large (upto … …Journal of Computer Science, Vol. 3, Issue 9 · 30 Sep 2007 · 6,630 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Comparative Study between Various Protocols of MANET NetworksMohammed F. Al-Hunaity, Salam A. Najim, Ibrahiem M. El-EmaryMulticast Ad-Hoc on-Demand Distance Vector (MAODV) protocol keeps sending control packets within static periods whether there was sending of data packets or not, and it was not concerned with the amount of these data packets. Based on this, many people found out that there are a high number of control packets in the short-lived connection. The main idea of this … …American Journal of Applied Sciences, Vol. 4, Issue 9 · 30 Sep 2007 · 6,960 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Efficient Algorithm for Capacitated Multifacility Location ProblemsChansiri Singhtaun, Peerayuth CharnsethikulIn this paper, a squared-Euclidean distance multifacility location problem with inseparable demands under balanced transportation constraints is analyzed. Using calculus to project the problem onto the space of allocation variables, the problem becomes minimizing concave quadratic integer programming problem. The algorithm based on extreme point ranking method combining with logical techniques is developed. The numerical experiments are randomly generated to … …Journal of Computer Science, Vol. 3, Issue 8 · 31 Aug 2007 · 6,443 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Innovative Technique of Texture Classification and Comparison Based on Long Linear PatternsV. Vijaya Kumar, B. Eswara Reddy, U. S.N. Raju, K. Chandra SekharanThe present paper proposes a method of texture classification based on long linear patterns. Linear patterns of long size are bright features defined by morphological properties: linearity, connectivity, width and by a specific Gaussian-like profile whose curvature varies smoothly along the crest line. The most significant information of a texture often appears in the occurrence of grain components. That’s why … …Journal of Computer Science, Vol. 3, Issue 8 · 28 Aug 2007 · 6,726 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Genotoxic Activity of Para-nitrophenol in Higher Plant Using Arbitrarily Primed- polymerase Chain Reaction (AP-PCR)Mohamed R. EnanParanitrophenol is a common toxic environmental pollutant; the aim of this study was to evaluate the potential of the DNA fingerprinting by AP-PCR assay to detect the DNA damage in the common bean (Phaseolus vulgaris) exposed to different concentrations of paranitrophenol (4.0-720 nM). The changes occurring in the fingerprint patterns were likely to be the result of paranitrophenol-induced DNA damage. … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 2 · 30 Jun 2007 · 7,069 accessesView PDFCite
Research ArticleOpen accessIn the abstractAdaptive Hybrid Mobile Agent Protocol for Wireless Multihop Internet AccessA. Velmurugan, R. RajaramInternet-based Mobile Ad Hoc Networking (MANET) is an emerging technology that supports self-organizing mobile networking infrastructures. This is expected to be of great use in commercial applications for the next generation Internet users. A number of technical challenges are faced today due to the heterogeneous, dynamic nature of this hybrid MANET. A new hybrid routing scheme AODV_ALMA is proposed, which … …Journal of Computer Science, Vol. 2, Issue 9 · 30 Sep 2006 · 6,124 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Web-Based E-Learning System Using Semantic Web FrameworkFayed F.M. Ghaleb, Sameh S. Daoud, Ahmad M. Hasna et al.E-learning is being increasing viewed as an important activity in the field of distance and continuing education. Web-based courses offer obvious advantages for learners by making access to educational resource very fast, just-in-time and relevant, at any time or place. In this study, based on our previous work, we present a framework for our web-based e-learning system using the Semantic … …Journal of Computer Science, Vol. 2, Issue 8 · 31 Aug 2006 · 6,920 accessesView PDFCite
Research ArticleOpen accessIn the abstractIntegration of Voxel Colouring Technique in the Volumetric Textures Representation Based on Image LayersBabahenini M. Chaouki, Hemidi Djallel, Djedi NoureddineThis paper presents a method for integrating a technique of reconstruction scene (voxel colouring) starting from images of the reference element of a volumetric texture, this one will be converted in a second phase into a whole of layers (2D images considered as transparent textures), which will be projected and composed successively on surface defined as volumetric grid using the … …Journal of Computer Science, Vol. 2, Issue 7 · 31 Jul 2006 · 6,638 accessesView PDFCite
Research ArticleOpen accessIn the abstractFace Recognition using Eigenfaces and Neural NetworksMohamed Rizon, Muhammad Firdaus Hashim, Puteh Saad et al.In this study, we develop a computational model to identify the face of an unknown person’s by applying eigenfaces. The eigenfaces has been applied to extract the basic face of the human face images. The eigenfaces is then projecting onto human faces to identify unique features vectors. This significant features vector can be used to identify an unknown face by … …American Journal of Applied Sciences, Vol. 3, Issue 6 · 30 Jun 2006 · 6,943 accessesView PDFCite