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29 results for “Cognitive Network”
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Research ArticleOpen accessIn the abstractDirect Sequence and Frequency Hopping Signals Classification Based on Co-Occurrence Matrix and Clustering TechniquesHaidy S. Fouad, Hend A. Elsayed, Shawkat K. GirgisSpread Spectrum techniques (SS) were first developed for military applications, but currently, they have commercial applications. SS provides secure communication and allows multiple accesses for same radio spectrum. So, most Wireless Local Area Network (WLAN) systems use it, as do Cognitive Radios (CR), space systems and Global Positioning Systems (GPS). Direct Sequence Spread Spectrum (DSSS) and frequency hopped spread spectrum … …Journal of Computer Science, Vol. 15, Issue 1 · 10 Jan 2019 · 8,203 accessesView PDFCite
Research ArticleOpen accessIn the abstractSecondary User Sensing Time Optimization in Sensing-Transmission Scheduling for Dynamic Spectrum Access in Cognitive RadioInderdeep Kaur Aulakh, Renu VigThe constraint of limited frequency spectrum for wireless communication is very daunting. The radio spectrum licensed to permanent users is wasted at times when not used continuously. Cognitive radio technology involves a change in regulation of radio spectrum. In cognitive radio networks a secondary user network is designed for efficiently using gaps in spectrum and not causing at the same … …Journal of Computer Science, Vol. 11, Issue 8 · 5 Nov 2015 · 7,343 accessesView PDFCite
Research ArticleOpen accessIn the abstractTHE NAME PATHWAY, AN ELEMENTARY COGNITIVE MODEL OF NAMES AS SENSORY REPRESENTATIONSS. Balachandra DassNames function as sensory representations, but the relationship between names and sensory stimuli/responses remains unclear. This study proposes the existence of a class of stimulus-response pathways, the name pathway, where a name is a reproducible and communicable symbol and the name pathway is one where the same name is both the stimulus and the response. Once a stimulus-response &#34name&#34 pathway … …Neuroscience International, Vol. 5, Issue 1 · 3 Apr 2014 · 7,250 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Influence of Social Capital on Adoption of Rural Development Programs by Farmers in the Caspian Sea Region of IranA. Ahmadi Firouzjaie, H. Sadighi, M.A. MohammadiThe main purpose of this study was to measure social capital (consisting of structural and cognitive) of mainly rice producing farmers in the Caspian See region of Iran. The secondary purpose was to determine the influence of farmers' social capital on adoption of Rural Development Programs (RDPs). This was a descriptive-correlation and a causal-comparative survey study. The population of this … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 1 · 31 Mar 2007 · 8,031 accessesView PDFCite
Research ArticleOpen accessIn the abstractRisk Instrument for Screening in the Community (RISC): Cross Cultural PerspectivesPatricia Leahy-Warren, Elizabeth Weathers, Marina Lupari et al.Older people are at an increased risk of developing multiple co-morbidities causing subsequent cognitive, functional decline and frailty and increasing the risk of adverse healthcare outcomes. Public Health Nurses (PHNs), geriatricians and researchers developed the Risk Instrument for Screening in the Community (RISC) to record the presence of problems, severity (mild, moderate, severe) of concerns and caregiver networks' ability to … …International Journal of Research in Nursing, Vol. 6, Issue 2 · 9 Nov 2015 · 7,441 accessesView PDFCite
Research ArticleOpen accessIn the abstractDeveloping Learner Centered Action Learning ModelChalard ChantarasombatProblem statement: This study aimed to examine the effects of using Learner Centered Action Learning Model. The research was research and development by applying Participatory Action Research method. Instruments used were an achievement test, a questionnaire on students’ satisfaction and focused group discussion. Approach: The statistic included the Mean, Standard Deviation, effectiveness index and Dependent Sample t-test. The results revealed … …Journal of Social Sciences, Vol. 7, Issue 4 · 21 Oct 2011 · 7,921 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordCombining Q-Learning and Multi-Layer Perceptron Models on Wireless Channel Quality PredictionAndrea L. Piroddi, Maurizio TorregianiOne of the most complex challenges that wireless communication systems will face in the coming years is the management of the radio resource. In the next years, the growth of mobile devices, forecast (CISCO, 2020), will lead to the coexistence of about 8.8 billion mobile devices with a growing trend for the following years. This scenario makes the reuse of … …American Journal of Engineering and Applied Sciences, Vol. 14, Issue 1 · 10 Mar 2021 · 6,761 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordUsing Deep Learning to Support Clinical Decision-Making: The Case of Alzheimer’s Disease DiagnosisNawal Mohamed Bahy Eldin, Ghada A. El Khayat, Abeer A. AmerAlzheimer’s disease is a chronic, progressive brain disorder that leads to a gradual decline in memory and cognitive functions. In this study, N-VGG16, an advanced deep learning model, is proposed. The model builds upon the VGG16 architecture, incorporating key enhancements to improve its ability to classify neurodegenerative conditions. The model processes structural neuroimaging data using a refined pipeline that applies … …Journal of Computer Science, Vol. 21, Issue 10 · 11 Dec 2025 · 3,383 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordRoundup of Graphical Navigation Helpers on the WebChabane Khentout, Mahieddine Djoudi, Lamri DouidiDespite the recent research, the Web remains mainly constituted of an ever-growing network of documents. As it becomes easier to publish documents, as the number of users and thus publishers, increases and as the number of documents grows, searching for information is turning into a cumbersome and time-consuming operation. Because of the loose interconnection between documents, people have difficulty remembering … …Journal of Computer Science, Vol. 3, Issue 3 · 31 Mar 2007 · 6,839 accessesView PDFCite