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RISS 인기검색어
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- 저자 : G.Anitha (검색결과 5 건)
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Anitha, V. C.,Banerjee, Arghya Narayan,Dillip, G. R.,Joo, Sang Woo,Min, Bong Ki American Chemical Society 2016 JOURNAL OF PHYSICAL CHEMISTRY C - Vol.120 No.18
<P>We report the fabrication of self-organized titania (TiO2) nanotubes (TNTs) with controlled pore diameters (140-20 nm) by anodization for the application of electrochemical capacitor electrodes. The areal capacitances obtained for 140 nm TNTs as 0.23/0.13 mF cm(-2) at a scan rate of 1/5 mV s(-1) and it is enhanced to 5.5/2.9 mF cm(-2) (at the same scan rates) by controlling the pore diameter to 20 nm. In this study, role of pore diameter in the capacitance behavior of TNTs is explained on the basis of effective surface area and presence of oxygen vacancies/titanium interstitials. With a decrease in the pore diameter, the surface area-to-volume ratio (and hence, active surface sites) increases, which leads to greater dissociation of Ti4+ into Ti3+ under high temperature annealing and thus brings more nonstoichiometric defects like Ti3+ interstitials and oxygen deficiency within the lower dimensional TNTs. This manifests higher charge conductivity and greater electrochemical performance of TNTs with lower diameters. The simplicity of anodization method and the excellent electrochemical properties make these vertical TNTs as an alternative candidate for use in energy storage applications.</P>
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Anitha T.,Gopu G.,Arun Mozhi Devan P. 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.4
The mechanical ventilation technique is crucial for saving the lives of critically ill patients in the Intensive Care Unit. However, there can be a mismatch between the patient’s needs and the ventilator settings, which can cause patient-ventilator asynchrony. Our research aims to tackle this issue by implementing a novel current cyclic feedback type iterative learning PID controller (ILCPID) to achieve the desired pressure and volume. The research also provides a concise and comprehensive study to identify the most eff ective machine learning methodology for developing adequate ventilation models. In addition, the ILCPID controller’s accuracy and eff ectiveness are further validated using machine learning-based classifi ers that can predict and identify the best model for the diff erent ventilator modes, reducing the risk of mechanically ventilated patients. Among the diff erent classifi ers, the proposed narrow neural network achieved an accuracy of 92.4% and 89.29% for pressure and volume, respectively. Other techniques, such as wide neural networks, coarse trees, K-nearest neighbours, and decision trees, were also compared for accuracy, training duration, specifi city, and sensitivity.
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A. Anitha,V.G. Kalpana,P. Muthupriya 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.1
The performance of Light Weight Self-Compacting Concrete (LWSCC) incorporated with Sintered Fly Ash and Vermiculiteare investigated in this study. The robustness and hardened properties of the LWSCC is investigated at diverse proportioningrates where Cement, Fine Aggregate and Coarse Aggregate are replaced with Fly Ash (FA) (25%), Vermiculite (1-9%) andSintered Fly Ash (SFA) (10-50%) respectively. The workability properties such as Filling ability, Passing ability, viscosity andthe mechanical properties such as density, compressive strength, tensile strength, flexural strength, ultrasonic pulse velocity,acid and sulphate resistance were studied. The percentage loss in weight and loss in compressive strength due to Acid attackand Sulphate attack at the age of 28 days of LWSCC were observed by immersing in 10% of HNO3, magnesium sulphate andsodium sulphate solutions. Vermiculite with SFA considerably boosted the workability and mechanical properties of LWSCCmixes. The presence of lightweight aggregates reduced the strength loss caused by sodium and magnesium sulphate ions. Acombination of 5% of Vermiculite and 30% of SFA resulted with the best robustness and hardened property of concrete
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Smart City IoT System Network Level Routing Analysis and Blockchain Security Based Implementation
Bommu Samuyelu,M Aravind Kumar,Babburu Kiranmai,N Srikanth,Thalluri Lakshmi Narayana,G V. Ganesh,Gopalan Anitha,Mallapati Purna Kishore,Guha Koushik,Mohammad Hayath Rajvee,S S. Kiran 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.2
This paper demonstrates, network-level performance analysis and implementation of smart city Internet of Things (IoT) system with Infrastructure as a Service (IaaS) level cloud computing architecture. The smart city IoT network topology performance is analyzed at the simulation level using the NS3 simulator by extracting most of the performance-deciding parameters. The performance-enhanced smart city topology is practically implemented in IaaS level architecture. The intended smart city IoT system can monitor the principal parameters like video surveillance with a thermal camera (to identify the virus-like COVID-19 infected people), transport, water quality, solar radiation, sound pollution, air quality (O3, NO2, CO, Particles), parking zones, iconic places, E-suggestions, PRO information over low power wide area network in 61.88 km × 61.88 km range. Primarily we have addressed the IoT network-level routing and quality of service (QoS) challenges and implementation level security challenges. The simulation level network topology analysis is performed to improve the routing and QoS. Blockchain technology-based decentralization is adopted to enrich the IoT system performance in terms of security.
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Novel UWB Monopole Antenna With Band Notched Characteristics
V.N.Koteswara Rao. Devana,B.S.L.Mounika,B.Yamini,G.Anitha,G.BalaSaiTarun 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.5
A compact planar monopole antenna with band-notched characteristics suitable for Ultra Wideband (UWB) applications is presented. The proposed UWB microstrip-fed antenna consisting of U-shaped slots in both patch and the microstrip-feed line with a defected ground structure. This antenna is designed to cover the Federal Communication Commission (FCC) bandwidth for UWB applications (2.04-14.6 GHz), while showing tri band-notched characteristics in the frequency bands of: (3-4.3 GHz) used for WiMAX, (6.12-6.8 GHz) used for C-band uplink frequency and (8.7-9.2 GHz) used for aeronautical radio navigation. The proposed antenna is suitable for various narrow band wireless applications, satellite applications and radar applications. The proposed UWB antenna is simulated by using High Frequency Structural Simulator (HFSS).
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