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A Comparative Study of the Electrodes Gels’Electrical Properties in the Measurement issues of intrabody Communication

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Journal of Beijing institute of Technology 2022年第1期31卷 71-80页

作者： Fengjie Lin Ziliang Wei Jiejie Yang Yangrong Wen Yueming Gao Sio Hang Pun mang i vai Min Du College of Physics and information Engineering Key Laboratory of Medical Instrumentation&Pharmaceutical Technology of Fujian ProvinceFuzhou UniversityFuzhou 350108China State Key Laboratory of Analog and Mixed-Signal VLSi University of MacaoTaipaMO 999078China

intrabody communication(iBC)technology is becoming progressively more standard-ized due to its low power consumption and high security features incorporated into the third phys-ical layer of the iEEE 802.15.6 *** then,there are still many challenges in normalizing the measurement issues of iBC.A major concern that should not be overlooked is the electrodes in the iBC,especially the popular use of gel *** the channel measurements,gel electrodes are commonly employed to improve the signal-to-noise ratio and prevent electrodes from falling *** this paper,a comparative study of the electrical properties of gel was investigated during the measurement of human channel characteristics and to clarify the differences of ***,the basis of electrostatic field pole plate measurements and electromagnetic theory were introduced to interpretate how the relative permittivity and conductivity of different gels will influence the meas-urement *** the in vivo experiments with different gel or dry electrodes were performed to compare the differences induced by the *** results indicate that the influence of the gel on the human channel measurement is mainly concentrated below 400 kHz(the attenuation is re-duced by 16.7 dB on average),and the stability of the permittivity and conductivity of the gel has a direct impact on the stability of its measurement of the human *** result may provide a meaningful reference for the standardization of electrode usage in iBC.

关键词： intrabody communication channel characteristic measurement gel electrodes permit-tivity conductivity

Wavelet Analysis and Applications 2007

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Electro Optic Methods in intra-body Communication System

丛书名： Applied and Numerical Harmonic Analysis

2007年

作者： Tao Qian mang i. vai Yuesheng Xu

来源：畅想之星图书光盘版（南... 评论

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Electro Optic Methods in Intra-body Communication System

第二届国际计算科学与工程国际学术研讨会

作者： Jian Li Shuang Zhang Peng Un Mak Sio Hang Pun mang i vai Engineering and Technical College of Chengdu University of Technology College of computer science Neijiang Normal University Biomedicine Department of Electrical and Electronics Engineering Faculty of Science and Technology University of Macau

This paper briefly presents the history of development of the TRiZ namely the Theory of the Solution of inventive Problems, introduces the current situation of the theoretical research and the application of the TRiZ, and propounds the emphasis and direction of the research and application of the TRiZ in China, which will contribute to the enhance the efficiency and benefits in ComputerAided Manufacturing.

关键词： TRiZ inventive Problems CAM Artificial intelligence Expert System

A New Adaptive Subband Multiple-Channel ANC

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A New Adaptive Subband Multiple-Channel ANC

第二十四届中国控制会议

作者： vai mang i Dept. of Science and Technology Macau UniversityMacau

＜正＞ This paper presents a novel approach for subband feedback Active Noise Control （ANC） which used for multi-channel ANC. Wideband ANC systems often involve adaptive filters with hundreds of taps. Using subband processing can considerably reduce the length of the adaptive filter. This paper presents a time domain algorithm for subband feedback ANC using relatively short fixed FiR filters to do the subband processing. The adaptive coefficients in the system are updated using a weight constrained NLMS algoritlun for feedback ANC. The proposed subband algorithm had a significant performance advantage over the traditional multi-channel ANC algorithm in terms of the rate of convergence and the noise attenuation that could be obtained.

关键词： ANC(adaptive noise control) subband multiple-channel ANC

Optimal Low-voltage Distribution Topology with integration of PV and Storage for Rural Electrification in Developing Countries:A Case Study of Cambodia

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Journal of Modern Power Systems and Clean Energy 2020年第3期8卷 531-539页

作者： Vannak vai Marie-Cecile Alvarez-Herault Bertrand Raison Long Bun Department of Electrical and Energy Engineering(GEE) Institute of Technology of Cambodia(ITC)Phnom Penh 12150Cambodia institute of Engineering UniversitéGrenoble Alpes38000 GrenobleFrance

This paper addresses an optimal design of low-voltage(LV)distribution network for rural electrification considering photovoltaic(PV)and battery energy storage(BES).it aims at searching for an optimal topology of an LV distribution system as well as the siting and sizing of PV and storage over a time horizon of 30 ***,the shortest-path algorithm(SPA)and first-fit bin-packing algorithm(FFBPA)are used to search for the optimal radial topology that minimizes the total length of the distribution line and improves the load ***,the optimal siting of decentralized BES(DeBES)is determined using a genetic algorithm(GA)to eliminate the undervoltage constraints due to the load *** iterative techniques are elaborated to size the maximum peak power of PV and the minimum number of DeBES that can be connected to an LV network without violating the voltage and current ***,the sizing strategy of centralized BES(CeBES)is developed to avoid reverse power flows into the medium-voltage(MV)***,a Monte Carlo approach is used to study the impact of load profile uncertainties on the topology.A non-electrified village in Cambodia has been chosen as a case study.

关键词： Battery energy storage(BES) low-voltage(LV)distribution network Monte Carlo photovoltaic(PV) electrification planning

investigation and Comparison of Two models in Galvanic Coupling intra-body Communications

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Investigation and Comparison of Two models in Galvanic Coupl...

中国电子学会第十七届信息论学术年会

作者： Pun Siohang Wong Kuok Kit Mak Peng Un vai mang i Department of Electrical and Electronics Engineering Faculty of Science and TechnologyUniversity of Macau institute of Precision instrument Fuzhou University

intra - body communication(iBC) is a new,emerging,short - range and human body based communication methodology. it is a technique to network various devices on human body,by utilizing the conducting properties of human tissues,suitable for currently fast developing Body area network(BAN)/Body sensor network(BSN).iBC is believed to have advantages in power consumption, electromagnetic radiation,interference from external electromagnetic noise,security,and restriction in spectrum *** this article,the authors develop two models,which are analytical and empirical approaches,for comparing the performance and accuracy of iBC on a human *** in vivo experiment of five volunteers,both models basically match with the experimental result with equivalent circuit model superior than electromagnetic model in term of maximum error.

关键词： intra-body communication Analytical model Empirical circuit model

The Approximate Solutions of FPK Equations in High Dimensions for Some Nonlinear Stochastic Dynamic Systems

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Communications in Computational Physics 2011年第10期10卷 1241-1256页

作者： Guo-Kang Er vai Pan iu Faculty of Science and Technology University of MacaoMacao SARP.R.China

The probabilistic solutions of the nonlinear stochastic dynamic(NSD)systems with polynomial type of nonlinearity are investigated with the subspace-EPC *** space of the state variables of large-scale nonlinear stochastic dynamic system excited by white noises is separated into two *** sides of the Fokker-Planck-Kolmogorov(FPK)equation corresponding to the NSD system is then integrated over one of the *** FPK equation for the joint probability density function of the state variables in another subspace is ***,the FPK equation in low dimensions is obtained from the original FPK equation in high dimensions and it makes the problem of obtaining the probabilistic solutions of largescale NSD systems solvable with the exponential polynomial closure *** about the NSD systems with polynomial type of nonlinearity are given to show the effectiveness of the subspace-EPC method in these cases.

关键词： Nonlinear stochastic dynamic systems large-scale systems probability density function Fokker-Planck-Kolmogorov equation subspace

Flexible implementation of Front-end Acquisition System for Bio-signal using FPAA

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Flexible Implementation of Front-end Acquisition System for ...

2007中国生物医学工程联合学术年会

作者： Chan Wai Wong Chan U Fai Pun Sio Hang vai mang i Mak Peng Un Department of Electrical and Electronics Engineering Faculty of Science and TechnologyUniversity of MacauMacau SARChina Department of Electrical and Electronics Engineering Faculty of Science and TechnologyUniversity of MacauMacau SARChina Department of Electrical and Electronics Engineering Faculty of Science and TechnologyUniversity of MacauMacau SARChina Department of Electrical and Electronics Engineering Faculty of Science and TechnologyUniversity of MacauMacau SARChina Department of Electrical and Electronics Engineering Faculty of Science and TechnologyUniversity of MacauMacau SARChina

＜正＞This paper introduces the implementation principles of a general front-end acquisition system suitable for various bioelectric signals based on FPAA technology and chose the ECG signal as a test-bed for initial verification of our system. The implemented electronic system owns high CMRR characteristics to meet the requirement of bio-signal. The system is tested by a simulated cardiac signal generated from a patient simulator （Metron PS-420）, and ECG signal from a healthy male subject （aged 23）..

关键词： FPAA CMRR ECG Bioelectric Signal

A Comparative investigation of the Biodegradation Behaviour of Linseed Oil-Based Cross-Linked Composites Filled with industrial Waste Materials in Two Different Soils

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Journal of Renewable Materials 2023年第3期11卷 1254-1268页

作者： Eglė Malachovskienė Danguolė Bridžiuvienė Jolita Ostrauskaitė Justina vaičekauskaitė Gailė Žalūdienė Biodeterioration Research Laboratory Nature Research CentreVilniusLT-08412Lithuania Department of Polymer Chemistry and Technology Kaunas University of TechnologyKaunasLT-50254Lithuania Laboratory of Bedrock Geology Nature Research CentreVilniusLT-08412Lithuania

The biodegradation of polymeric biocomposites formed from epoxidized linseed oil and various types of fillers(pine needles,pine bark,grain mill waste,rapeseed cake)and a control sample without filler was studied during 180 days of exposure to two types of forest soil:deciduous and *** weight loss,morphological,and structural changes of polymer composites were noticed after 180 days of the soil burial *** greatest weight loss of all tested samples was observed in coniferous forest soil(41.8%–63.2%),while in deciduous forest soil,it ranged between 37.7%and 42.3%.The most significant changes in the intensities of the signals evaluated by attenuated total reflectance infrared spectroscopy,as well as morphological changes determined by scanning electron microscopy,were assessed for polymer composite with rapeseed cake and specimen without filler in coniferous forest soil and are in a good agreement with weight loss *** significantly lower changes in weight loss,morphology,and structure of polymeric film with pine bark were noticed in both *** was suggested that fungi of Trichoderma,Penicillium,Talaromyces and Clonostachys genera are the possible soil microorganisms that degrade linseed oil-based cross-linked polymer ***,the novel polymer composites have the potential to be an environmentally friendly alternative to petroleum-based mulching films.

关键词： Polymer composites linseed oil industrial waste materials biodegradation soil burial