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2023 IEEE Global Conference on Information Technologies and Communications, GCITC 2023

作者： Gayathri, S. Vijayanandh Thirumoorthy, P. Valarmathy, A.S. Pandi, V. Samuthira Shobana, d. R.M.K. Engineering College Department of Computer Science and Engineering Tamil Nadu Chennai India Vel Tech Rangarajan Dr.Sagunthala R&d Institute of Science and Technology Department of Computer Science and Engineering Tamil Nadu Chennai India Dhanalakshmi College of Engineering Department of Electrical and Electronics Engineering Tamil Nadu Chennai India Prince Shri Venkateshwara Padmavathy Engineering College Department of Electrical and Electronics Engineering Tamil Nadu Chennai India Chennai Institute of Technology Centre for Advanced Wireless Integrated Technology Tamil Nadu Chennai India Rajalakshmi Engineering College Department of Electrical and Electronics Engineering Tamil Nadu Chennai India

ISBN: (纸本)9798350308167

Intelligent systems for monitoring health have been made possible by the IoT and the mental/physical health of an individual may be monitored using such a system. determinants of numerous diseases, both physical and mental include tension, worry and high blood pressure. Problems associated with aging including anxiety, depression, stress and pressure require specialized care in this context. The prompt identification of health issues by monitoring of nervousness tension, stress, and heart rate is a key to avoiding irreversible harm. This will improve health outcomes;lessen the burden on caregivers, and save money. Find innovative technological answers for continuous monitoring of stress, anxiety, and blood pressure through the use of covert embedded sensors as well as deep learning methods. As a result of the suggested smart health monitoring system, health monitoring services may now be provided quickly, cheaply, and reliably from remote places, whereas this was not previously achievable with conventional health care systems. The implementation of a blockchain-based framework has increased the safety and privacy of patients' private information and reduced the likelihood of it being misused. Using deep Learning and related technologies to evaluate health data for numerous goals has aided in the achievement of both preventative healthcare and fatality control. This has allowed for the early diagnosis of chronic illnesses, which was previously impossible. The combination of computing resources in the cloud and electronic storage has been introduced in order to render operations cheaper and instantaneously. This research provides a comprehensive overview of the state of health monitoring technology, including the most up-to-date developments and the most pressing problems. © 2023 IEEE.

关键词： deep Learning Health record Monitoring Healthcare Internet of Things IoT Sensors

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Microstructural Study on the Slope of Plateau Pressure in Tife0.8al0.2 Hydrogen Storage Alloy

SSRN

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SSrN 2023年

作者： Kwon, Hong Gi Jung, Sojin Ko, Won-Seok Kwag, ryun-Ho Lee, da Hye Na, Tea-Wook Kim, Seongtak Park, Sangwon Park, Hyung-Ki Functional Materials and Components R&D Group Korea Institute of Industrial Technology Gangneung25440 Korea Republic of Department of Materials Science and Engineering Inha University Incheon22212 Korea Republic of Pohang37666 Korea Republic of

This study analyzed the reason for the large slope of plateau pressure in a TiFe0.8Al0.2 alloy. In the TiFe0.8Al0.2 alloy, the Ti2Fe phase was precipitated, and the B2 phase was separated into two B2 phases. The first hydrogenation kinetics was analyzed, and the alloy absorbed hydrogen at room temperature without any thermal activation process by forming the Ti2Fe phase. The hydrogen absorption and desorption behaviors were examined, and the slope of the plateau pressure was severely formed. The two B2 phases had different compositions, resulting in a difference in the lattice constant. The hydride-forming enthalpies were calculated through a density function theory calculation using the compositions of the two B2 phases, and the values of the two B2 phases were different. Therefore, it was confirmed that the slope of the plateau pressure was severely formed because of the separation of the B2 phase. © 2023, The Authors. All rights reserved.

关键词： Enthalpy

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Microstructures and mechanical behavior of the bimetallic additively-manufactured structure(BAMS)of austenitic stainless steel and Inconel 625

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Journal of Materials Science & technology 2021年第15期74卷 176-188页

作者： Md.r.U.Ahsan Xuesong Fan Gi-Jeong Seo Changwook Ji Mark Noakes Andrzej Nycz Peter KLiaw duck Bong Kim Department of Mechanical Engineering Tennessee Technological UniversityCookevilleTN38505United States Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN37996United States Department of Manufacturing and Engineering Technology Tennessee Technological UniversityCookevilleTN38505United States Advanced Forming Process R&D Group Korea Institute of Industrial TechnologyUlsan 44413South Korea Oak Ridge National Laboratory Oak RidgeTN37830United States

Bimetallic additively manufactured structures(BAMSs)can replace traditionally-fabricated functionallygraded-components through fusion welding processes and can eliminate locally-deteriorated mechanical properties arising from *** present work fabricates a BAMS by sequentially depositing the austenitic stainless-steel and Inconel625 using a gas-metal-arc-welding(GMAW)-based wire+arc additive manufacturing(WAAM)*** mapping shows a smooth compositional transition at the interface without any *** materials being the face-center-cubic(FCC)austenite,the electron backscattered diffraction(EBSd)analysis of the interface shows the smooth and cross-interfacecrystallographic growth of long-elongated grains in the<001>*** hardness values were within the range of 220-240 HV for both materials without a large deviation at the *** to the controlled thermal history,mechanical testing yielded a consistent result with the ultimate tensile strength and elongation of 600 MPa and 40%,respectively,with the failure location on the stainless-steel *** study demonstrates that WAAM has the potential to fabricate BAMS with controlled properties.

关键词： WAAM Additive manufacturing BAMS functionally-graded structures Microstructures Mechanical properties

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Improving FANET Communication with a QoS Optimized Location-Aided routing Protocol

Improving FANET Communication with a QoS Optimized Location-...

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Smart Electronics and Communication (ICOSEC), International Conference on

作者： A. Farithkhan E.d. Kanmani ruby M. Prabha S. Manju r. ramasamy K. Michael Mahesh Department of Electronics and Communication Engineering Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Avadi Chennai India Center for advanced wireless technology Chennai Institute of Technology Kundrathur Chennai India Department of Electronics and Communication Engineering Ramco Institute of Technology Tamilnadu Department of Electronics and Communication Engineering Saveetha Engineering College Chennai India

ISBN: (数字)9798331504403

ISBN: (纸本)9798331504410

Unmanned Aerial Vehicle (UAV) swarms play an essential role in emergency communication situation, especially when conventional infrastructure is under attack. Making effective routing protocols for Flying Ad Hoc Networks (FANETs) is a challenging task. Current routing protocols-which were frequently created for MANETs and VANETs-assume that UAV nodes move randomly, which is inappropriate in mission-oriented applications. The purpose of this research is to alleviate network bottlenecks in mission-oriented UAV swarms by proposing a novel 3d cone-shaped location-aided routing protocol with increased Quality of Service (QoS), called LArP-EQ. Modified Location Aided routing protocol (MLArP) balances power consumption and end-to-end (E2E) delay to maximize network performance. The outcomes of the simulation demonstrate significant improvements in 20% Packet delivery ratio (Pdr), 15% average end-to-end delay and better energy consumption over the current standards.

关键词： Power demand Three-dimensional displays Scalability Quality of service Autonomous aerial vehicles routing routing protocols Ad hoc networks delays Standards

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Nanosecond square-wave pulses of flexibly tunable domain walls in a nonlinear polarization rotation fiber laser

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Optics Express 2025年第12期33卷 25878-25887页

作者： Xiaohui Ma Chao Song Yong Zhou Wei Zhang Wentan Fang Xiaolin Chen Song Huang Meisong Liao Yasutake Ohishi Weiqing Gao Department of Optical Engineering School of Physics Hefei University of Technology Feicui Road 420 Hefei 230601 China R&D Center of High-Power Laser Components Shanghai Institute of Optics and Fine Mechanics Shanghai 201800 China Research Center for Advanced Photon Technology Toyota Technological Institute 2-12-1 Hisakata Tempaku Nagoya 468-8511 Japan

Nanosecond square-wave pulses of color domain wall (CdW) and polarization color domain wall (PCdW) are realized in a nonlinear polarization rotation (NPr) fiber laser. CdW and PCdW can be flexibly switched by purely changing the polarization state in the cavity. The pulse width of PCdW can be tuned from 57 ns to 1013 ns smoothly. The duty cycle can be tuned from 0 to 1, accompanied by the energy transfer from long to short wavelengths. The dual-wavelength operation collapses into single-wavelength operation when the duty cycle reaches 0 or 1. A wavelength tuning range of ∼12 nm is also achieved for PCdW. The signal to noise ratios of CdW and PCdW are 58 dB and 66 dB respectively, and the envelope modulations of the radio-frequency (rF) spectrums are periodical. All those results can be reproduced by properly setting the pump power and polarization state. This work provides a platform with good flexibility, stability, and repeatability for investigating domain walls, and offers strong support for the further applications of square-wave pulse fiber lasers.

关键词： dark solitons Fiber lasers Kerr effect Nanosecond pulses Numerical simulation Wavelength division multiplexing

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Customizable design ofmultiple-biomolecule delivery platform for enhanced osteogenic responses via‘tailored assembly system’

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Bio-design and Manufacturing 2022年第3期5卷 451-464页

作者： Hyun Lee Min-Kyu Lee Ginam Han Hyoun-Ee Kim Juha Song Yuhyeon Na Chang-Bun Yoon SeKwon Oh Tae-Sik Jang Hyun-do Jung Department of Biomedical-Chemical Engineering Catholic University of KoreaBucheon 14662Republic of Korea Department of Biotechnology The Catholic University of KoreaBucheon 14662Republic of Korea Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea Querrey Simpson Institute for Bioelectronics Northwestern UniversityEvanstonIL 60208USA Biomedical Implant Convergence Research Center Advanced Institutes of Convergence TechnologySuwon 443-270Republic of Korea School of Chemical and Biomedical Engineering Nanyang Technological University70 Nanyang DriveSingapore 637457Singapore Department of Advanced Materials Engineering Korea Polytechnic UniversitySiheung-siGyeonggi-do 15073Republic of Korea Surface R&D Group Korea Institute of Industrial TechnologyIncheon 21999Republic of Korea Department of Materials Science and Engineering Chosun UniversityGwangju 61452Republic of Korea

Porous titanium(Ti)scaffolds have been extensively utilized as bone substitute scaffolds due to their superior biocompatibility and excellent mechanical ***,naturally formed TiO2 on the surface limits fast *** biomolecules have been widely utilized to overcome this issue;however,homogeneous porous Ti scaffolds could not simultaneously deliver multiple biomolecules that have different release *** this study,functionally graded porous Ti scaffolds(FGPTs)with dense inner and porous outer parts were fabricated using a two-body combination and densification *** with growth factor(BMP-2)and antibiotics(TCH)exhibited suitable mechanical properties as bone substituting material and presented good structural *** release of BMP-2 was considerably prolonged,whereas the release of TCH was comparable to that of homogenous porous titanium scaffolds(control group).The osteogenic differentiation obtained using FGPTs was maintained due to the prolonged release of *** antimicrobial properties of these scaffolds were verified using *** in terms of prior release *** addition,various candidates for graded porous Ti scaffolds with altered pore characteristics were presented.

关键词： functionally graded porous titanium scaffold Tailored assembly system Mechanical tunability Multiplebiomolecule delivery Bone tissue engineering

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Multi-scale elastoplastic mechanical model and microstructure damage analysis of solid expandable tubular

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Chinese Physics B 2020年第10期29卷 336-348页

作者： Hui-Juan Guo Ying-Hua Liu Yi-Nao Su Quan-Li Zhang Guo-dong Zhan Department of Engineering Mechanics AMLTsinghua UniversityBeijing 100084China Drilling Mechanical Department CNPC Engineering Technology R&D Company LimitedBeijing 102206China Drilling Technology Division EXPEC Advanced Research CenterSaudi Arabia

We present an in-depth study of the failure phenomenon of solid expandable tubular (SET) due to large expansion ratio in open holes of deep and ultra-deep wells. By examining the post-expansion SET, lots of microcracks are found on the inner surface of SET. Their morphology and parameters such as length and depth are investigated by use of metallographic microscope and scanning electron microscope (SEM). In addition, the Voronoi cell technique is adopted to characterize the multi-phase material microstructure of the SET. By using the anisotropic elastoplastic material constitutive model and macro/microscopic multi-dimensional cross-scale coupled boundary conditions, a sophisticated and multi-scale finite element model (FEM) of the SET is built successfully to simulate the material microstructure damage for different expansion ratios. The microcrack initiation and growth is simulated, and the structural integrity of the SET is discussed. It is concluded that this multi-scale finite element modeling method could effectively predict the elastoplastic deformation and the microscopic damage initiation and evolution of the SET. It is of great significance as a theoretical analysis tool to optimize the selection of appropriate tubular materials and it could be also used to substantially reduce costly failures of expandable tubulars in the field. This numerical analysis is not only beneficial for understanding the damage process of tubular materials but also effectively guides the engineering application of the SET technology.

关键词： solid expandable tubular(SET) material microstructure damage multi-scale elastoplastic model virtual failure

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Simultaneous Measurement of Oxygen Consumption rate and Thermogenesis in Biological Systems for Non-equilibrium Energetics

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e-Journal of Surface Science and Nanotechnology 2024年第3期22卷 273-278页

作者： Namari, Nuning Anugrah Putri Yan, Mo Nakamura, Junji Takeyasu, Kotaro Graduate School of Science and Technology University of Tsukuba 1-1-1 Tennodai Ibaraki Tsukuba305-8573 Japan Department of Materials Science Institute of Pure and Applied Sciences University of Tsukuba 1-1-1 Tennodai Ibaraki Tsukuba305-8573 Japan Tsukuba Research Center for Energy and Materials Science University of Tsukuba 1-1-1 Tennodai Ibaraki Tsukuba305-8573 Japan Kyushu University 744 Motooka Nishi-ku Fukuoka-shi Fukuoka819-0395 Japan R&D Center for Zero CO2 Emission with Functional Materials University of Tsukuba 1-1-1 Tennodai Ibaraki Tsukuba305-8573 Japan

We have recently proposed a theoretical model for the mechanism of heat production in the mitochondrial respiratory chain, derived from the overpotential of electrochemical reactions in enzyme catalysis. A key feature of this overpotential-derived thermogenesis model is that the distribution of energy consumption between thermogenesis and adenosine triphosphate synthesis changes depending on the reaction rate. To verify that similar energy partitioning occurs in other metabolic reactions linked to the respiratory chain, we developed a system for the simultaneous measurement of thermogenesis and respiration rate in yeast cells. We correlated the amount of thermogenesis with the respiration rate, finding that most thermogenesis in yeast cells is derived from fermentation, which is connected to the respiration rate. By investigating the relationship between fermentative heat production and respiration rate, we discovered that the energy partitioning between heat production and substance synthesis exists and changes depending on the respiration rate. This strongly suggests the existence of electrochemical overpotential-derived thermogenesis in metabolic processes. ©2024 The author(s)

关键词： Energy partitioning Metabolism Overpotential Thermogenesis

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Electric field relaxation by FGM on permittivity to three-core type GIS spacer

Electric field relaxation by FGM on permittivity to three-co...

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23rd International Symposium on High Voltage Engineering (ISH 2023)

作者： Katsumi Kato Soya Bito ryuto Nomura Hidetaka Masui Kenji Okamoto Department of Electrical Engineering and Information Science NIT Niihama College Niihama Japan Advanced Technology Laboratory Corporate R&D Headquarters Fuji Electric Co. Ltd. Hino Japan

ISBN: (数字)9781839539923

For the relaxation of electric field (E-field) stress around Gas Insulated Switchgears (GIS) spacer, we have proved the effectiveness of an application of spacer with functionally graded materials (FGM) with a spatial distribution of permittivity ε (ε-FGM). However, we have investigated the effectiveness of the FGM spacer only in the case of single-core type GIS, so far. For wider application of the FGM spacer, it is needed to investigate its effectiveness not only in single-core type but also in three-core type GIS. For this purpose, in this paper, we carried out the three-dimensional electric field analysis for three-core type GIS, in order to investigate the E-field relaxation effect by an application of ε-FGM spacer. Firstly as fundamental investigations, we consider a simplified model for a three-core type FGM spacer. The cone-type spacer model for the three-core type GIS is used. We added ε distribution into the internal part of the spacer. Then we calculate E-field stress in and around three-core type GIS spacer for various ε distributions inside the spacer. Finally, we quantified relaxation effect of the maximum E-field stress.

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functionally graded structure of a nitride-strengthened Mg_(2)Si-based hybrid composite

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Journal of Magnesium and Alloys 2024年第3期12卷 1239-1256页

作者： Jeongho Yang Woongbeom Heogh Hogi Ju Sukhyun Kang Tae-Sik Jang Hyun-do Jung Mohammad Jahazi Seung Chul Han Seong Je Park Hyoung Seop Kim Susmita Bose Amit Bandyopadhyay Martin Byung-Guk Jun Young Won Kim dae-kyeom Kim rigoberto CAdvincula Clodualdo Aranas Jr Sang Hoon Kim School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Department of Mechanical Design Engineering Hanyang UniversitySeoul 04763Republic of Korea Process Research 3 Team LG Display Co.Ltd.PajuGyeonggi-do 10845Republic of Korea Department of Materials Science and Engineering Chosun UniversityGwangju 61452Republic of Korea Institute of Well-Aging Medicare&Chosun University LAMP Center Chosun UniversityGwangju 61452Republic of Korea Division of Materials Science and Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Mechanical Engineering École de Technologie SupérieureMontrealQuebec H3C 1K3Canada Material&Component Convergence R&D Center Korea Construction Equipment Technology InstituteGunsanJeollabuk-do 54002Republic of Korea School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore Graduate Institute of Ferrous&Eco Materials Technology Pohang University of Science and TechnologyPohangGyeongsangbuk-do 37673Republic of Korea Advanced Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Institute for Convergence Research and Education in Advanced Technology Yonsei UniversitySeoul 03722Republic of Korea School of Mechanical and Materials Engineering Washington State UniversityPullmanWashington 99164USA School of Mechanical Engineering Purdue UniversityWest LafayetteIndiana 47907USA Research Institute of Advanced Manufacturing Technology Korea Institute of Industrial TechnologyIncheon 21999Republic of Korea Department of Macromolecular Science and Engineering Case Western Reserve UniversityClevelandOhio 44106USA Department of Chemical and Biomolecular Engineering and Joint Institute for Advanced Materials University of TennesseeKnoxvilleTennessee 37996USA Center for Nanophase Materials and Sciences Oak Ridge National LaboratoryOak RidgeTennessee 37830USA Department of Mechanical Engineering University of New BrunswickFrederictonNew Brunswick E3B 5A3Cana

The ex-situ incorporation of the secondary SiC reinforcement,along with the in-situ incorporation of the tertiary and quaternary Mg_(3)N_(2) and Si_(3)N_(4) phases,in the primary matrix of Mg_(2)Si is employed in order to provide ultimate wear resistance based on the laser-irradiation-induced inclusion of N_(2) gas during laser powder bed *** is substantialized based on both the thermal diffusion-and chemical reactionbased metallurgy of the Mg_(2)Si–SiC/nitride hybrid *** study also proposes a functional platform for systematically modulating a functionally graded structure and modeling build-direction-dependent architectonics during additive *** strategy enables the development of a compositional gradient from the center to the edge of each melt pool of the Mg_(2)Si–SiC/nitride hybrid ***,the coefficient of friction of the hybrid composite exhibits a 309.3%decrease to–1.67 compared to–0.54 for the conventional nonreinforced Mg_(2)Si structure,while the tensile strength exhibits a 171.3%increase to 831.5 MPa compared to 485.3 MPa for the conventional *** outstanding mechanical behavior is due to the(1)the complementary and synergistic reinforcement effects of the SiC and nitride compounds,each of which possesses an intrinsically high hardness,and(2)the strong adhesion of these compounds to the Mg_(2)Si matrix despite their small sizes and low concentrations.

关键词： Laser powder bed fusion Mg_(2)Si-SiC/nitride hybrid composite Both the thermal diffusion-and chemical reaction-based metallurgy functionally graded structure Compositional gradient Wear resistance.

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