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2,473 results for “SOM”

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Research ArticleOpen accessIn the abstractEpidemiological Models Applied to Viruses in Computer NetworksJos R.S. Piqueira, Betyna F. Navarro, Luiz H.A. MonteiroTo investigate the use of classical epidemiological models for studying computer virus propagation we described analogies between computer and population disease propagation using SIR (Susceptible-Infected-Removed) epidemiological models. By modifying these models with the introduction of anti-viral individuals we analyzed the stability of the disease free equilibrium points. Consequently, the basal virus reproduction rate gives some theoretical hints about how to … …Journal of Computer Science, Vol. 1, Issue 1 · 31 Mar 2005 · 7,582 accessesView PDFCite
Research ArticleOpen accessIn the abstractSeek of an Optimal Way by Q-LearningY. Dahmani, A. BenyettouIn this article, we presented the Q-Learning training method which is a derivative of the reinforcement learning called sometimes training by penalty-reward. We illustrate this by an application to the mobility of a mobile in an enclosure closed on the basis of a starting point towards an unspecified arrival point. The objective is to find an optimal way optimal without … …Journal of Computer Science, Vol. 1, Issue 1 · 31 Mar 2005 · 6,936 accessesView PDFCite
Research ArticleOpen accessIn the abstractDynamic Reconfiguration of IP Domain Middleware Stacks to Support Multicast Multimedia Distribution in a Heterogeneous EnvironmentKevin Curran, Gerard ParrSeamless connectivity to multiple wireless networks independently of a fixed point is becoming increasingly important for mobile devices however wireless networks differ in bandwidth, size and access costs each requiring protocol functions to enable devices to communicate efficiently. In addition, due to the divergence of users and applications, traditional stacks are frequently enriched with additional functionality such as transport protocol … …Journal of Computer Science, Vol. 1, Issue 1 · 31 Mar 2005 · 6,786 accessesView PDFCite
Research ArticleOpen accessIn the abstractFactors Associated with Syringe Sharing Among Users of a Medically Supervised Safer Injecting FacilityEvan Wood, Mark W. Tyndall, Jo-Anne Stoltz et al.Vancouver, Canada recently opened a medically supervised safer injecting facility (SIF) in an effort to reduce HIV and overdose risk and public injection drug use. We sought to examine factors associated with syringe sharing among SIF users. SIF users were randomly recruited into a prospective cohort of SIF users known as the Scientific Evaluation of Supervised Injecting (SEOSI) cohort. We … …American Journal of Infectious Diseases, Vol. 1, Issue 1 · 31 Mar 2005 · 10,764 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvidences of Apoptosis in Hepatitis C Virus-Infected Hepatocytes and Peripheral Blood Monocuclear Cells in the Absence of Liver InjuryViviana Falcón, Nelson Acosta-Rivero, Mineko Shibayama et al.Understanding the mechanism of Hepatitis C Virus (HCV) pathogenesis is an important part of HCV research. In this study, the presence of apoptosis in HCV-infected liver and Peripheral Blood Mononuclear Cells (PBMC) from patients positive for anti-HCV antibodies and negative for serum HCV-RNA was investigated. The samples obtained from 21 patients were studied by in situ Hybridization (ISH), Immunofluorescence, TUNEL … …American Journal of Infectious Diseases, Vol. 1, Issue 1 · 31 Mar 2005 · 6,984 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetection of HCV Components and Pathological Reactions in Apoptotic Hepatocytes from Chronically HCV-infected PatientsViviana Falcón, Nelson Acosta-Rivero, Mineko Shibayama et al.Analysis of Hepatitis C Virus (HCV)-infected hepatocytes at the cellular level may contribute to elucidate the mechanisms of HCV pathogenesis. In this work, the presence of HCV components and pathological reactions in apoptotic hepatocytes from chronic HCV-infected patients were studied by electron microscopy and confocal microscopy. Eight samples of liver biopsies from patients with chronic hepatitis C were studied by … …American Journal of Infectious Diseases, Vol. 1, Issue 1 · 31 Mar 2005 · 6,909 accessesView PDFCite
Research ArticleOpen accessIn the abstractHeparin-PF4 Antibodies in Heparin Induced Thrombocytopenia: Its Relationship with FcgRIIa PolymorphismMeganathan Kannan, Firdos Ahmad, Sarfraz Ahmad et al.We did the pilot study, in an attempt to determine the prevalence of HIT in Indians and determine its relationship, if any, to FcγRIIa polymorphism, the occurrence of heparin-induced thrombocytopenia (HIT) was investigated in 33 Indian patients undergoing cardiovascular surgery (CVS) who received unfractionated heparin (UFH). Platelet counts were performed prior to the initiation of UFH therapy and 5-16 days, … …American Journal of Immunology, Vol. 1, Issue 1 · 31 Mar 2005 · 7,434 accessesView PDFCite
Research ArticleOpen accessIn the abstractImmunofluorometrical Exploring of Cortisol Hormone Levels in the Serum of Patients with Histologically Verified Microcellular Lung CancerIvan MilosevicIt is already known in the science that the cells of microcellular lung cancer can produce ACTH. By following the levels of Cortisol as one consequence of ACTH producing, in the serum of microcellular lung cancer patients, we could make some statistical conclusions how significant these levels would be in eventual future early diagnostic procedures, besides already existing tumormarkers etc. … …American Journal of Immunology, Vol. 1, Issue 1 · 31 Mar 2005 · 7,180 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Timber Extraction Machines in TurkeyNecmettin Senturk, Tolga OzturkIn forestry, like every kind of production, production works require a productive power. This productive power can be provided by both human power or animal and machines which are used by human beings. The production of wood raw material are formed various stages that continues from the productive place to market center. These work stages depend on each other like … …American Journal of Environmental Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 6,656 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Study on Suction-rainfall Response of a Cut Slope in Unsaturated Residual Soil Using a Field Rain SimulatorBujang B.K. Huat, Faisal Hj. Ali, S. MariappanThis research describes the design and construction of an artificial rain simulator system and the results obtained with regards to suction-rainfall response of a cut slope in unsaturated residual soil of weathered sandstone of various weathering grades. From the field measurements, the shallow tensiometers are found to record an immediate initial increase in matric suction within the first 20 min … …American Journal of Environmental Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 7,278 accessesView PDFCite