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311 results for “LED”
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Research ArticleOpen accessIn the keywordsSimulation and Optimization of Perovskite Type Micro Thermoelectric GeneratorJeyashree Yesuraj, Vimala Juliet Ashokan, Sukhi Yesuraj, Rebecca Shirly Harrison ChristleyIn this study the thermoelectric properties of perovskite type Ca-Mn-O3 compounds are estimated for the operating range of 850-1150 K. The optimization of design module for maximum power output is obtained using the analytical expression for power of Thermoelectric Generator (TEG). For the optimum length of 1.4 μm and with a cross sectional area of 0.3×0.3 μm the power obtained … …American Journal of Applied Sciences, Vol. 13, Issue 11 · 26 Nov 2016 · 7,381 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMonomers Release from Dental Composites: Effect of Immersion Media and Photoactivation Light SourceRaquel A.B. da Silva, Talita P. Prates, Driely Barreiros et al.The present study aimed to evaluate qualitatively and quantitatively the products released by composites with different light sources when immersed in distilled water or artificial saliva. Thirty-six samples were obtained from the composites using a silicone matrix. Specimens were divided into 12 groups according to: Composite (Charisma®, FiltekTMSilorane or GC Kalore®), device used for the materials photoactivation (halogen light or … …Current Research in Dentistry, Vol. 5, Issue 1 · 14 Jan 2015 · 7,188 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Review of Security System for Smart Home ApplicationsMohammad Syuhaimi Ab-Rahman, Mohd Ariff RazalyProblem statement: This study was discussed the development of security system for smart home applications. A more robust security system built around the world. The security system had developed based on a microcontroller device as a receiver, processor and transmitter of information. Approach: The method of transmitting and receiving data was done wirelessly using a ZigBee device. ZigBee had the … …Journal of Computer Science, Vol. 8, Issue 7 · 21 Jun 2012 · 7,358 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Comparison of Experimental and Analytical Study of the Gaussian IntensityDistribution for Light Emitting Diodes BeamMohammad Syuhaimi Ab-Rahman, Luqman Al-Hakim Azizan, Harry Ramza, Zulkifli MusaProblem statement: Wireless communication using white Light Emitting Diodes (LEDs) is the latest research field for next-generation communication. This study studies the comparison of Gaussian intensity distribution of the white LED using experimental and analytical method. The white LEDs are conducted to transmit an audio signal to the receiver. The receiver circuit consist of solar cell connected to the speaker … …Journal of Computer Science, Vol. 8, Issue 6 · 17 Mar 2012 · 7,269 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAnalytical Study of Signal-to-Noise Ratio for Visible Light Communication by Using Single SourceMohammad Syuhaimi Ab-Rahman, Nurain Izzati Shuhaimi, Luqman Al-Hakim Azizan, Mazen Radhe HassanProblem statement: In this study, optical wireless communication system using visible light is studied for indoor application. Approach: The process started with the calculation on performance of single source white LED where received power, channel DC gain and quality of data transmission (SNR computation) are identified. Through the simulation results, the SNR performance is directly proportional to angle of incident … …Journal of Computer Science, Vol. 8, Issue 1 · 2 Nov 2011 · 7,479 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Safe Method of Storing and Exchanging Electronic Health Records Using Smart Contracts and Blockchain Technology Using Fully Hashed Menezes-Qu-Vanstone AlgorithmMeenakshi Vashisth, Raju RanjanElectronic Health Records (EHRs) are essential for clinicians, patients, and researchers because they support timely care and informed decision-making. For this reason, digital health information must be collected, managed, and stored with strong protections to preserve privacy and prevent tampering. One approach to strengthening security is to use blockchain-based storage alongside smart contracts and controlled data sharing, which can help … …Journal of Computer Science, Vol. 22, Issue 2 · 21 Feb 2026 · 1,635 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSmart Patient Consent Management Model for Health Information Exchange Based on Blockchain TechnologyK. R. Rohini, P. S. Rajakumar, S. GeethaInnovation for Electronic Medical Records (EMRs) has been hindered by years of excessive regulation and inefficient bureaucracy. As data science and personalization encourage individuals to take an active role in their healthcare and regain control of their own medical records, there is an urgent need for new approaches. The ability to exchange electronic health records is fundamental in contemporary healthcare … …Journal of Computer Science, Vol. 20, Issue 7 · 17 Apr 2024 · 7,343 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSmart Agriculture and Food Industry with Blockchain and Artificial IntelligenceN. Nasurudeen Ahamed, R. VigneshHorticulture is one of the most major human exercises everywhere. Brilliant horticulture incorporates a bunch of advances, gadgets, conventions and computational ideal models to improve farming cycles. Blockchain, Big information, man-made consciousness, cloud and edge processing give capacities and answers for keeping, storing and investigating the huge information created by parts. The entry of a yield from the maker to … …Journal of Computer Science, Vol. 18, Issue 1 · 14 Jan 2022 · 10,396 accessesView PDFCite