Jianqing Wang

Bio: Jianqing Wang is an academic researcher from Nagoya Institute of Technology. The author has contributed to research in topics: Ultra-wideband & Bit error rate. The author has an hindex of 29, co-authored 238 publications receiving 3096 citations. Previous affiliations of Jianqing Wang include Tohoku University & Korea Maritime and Ocean University.

Monitoring of static magnetic field and variable electromagnetic fields in a large magnetic fusion plasma experimental facility

Abstract: The environmental static magnetic field and electromagnetic fields of various frequencies were measured around the Large Helical Device (LHD), a fusion plasma facility located in Japan. The LHD uses a superconducting magnet coil system and high-power plasma heating devices. Usually, leakage of the static magnetic field strength was less than 0.1 mT, but it varied according to the experimental conditions and protection of the operating coils. Leakage of the electric and magnetic fields from the Ion Cyclotron Range of Frequency (ICRF) plasma heating sources of 25-100 MHz were observed in bursts of either a short time or a long time according to particular plasma experiments, but the measured leaks were less than occupational regulation levels. Also, extremely low frequency (ELF) electromagnetic levels were measured near the magnetic coil power supply boxes, and high magnetic strength was observed. As a whole, the electromagnetic fields of the magnetic fusion experimental facility have various frequencies and time-dependent variable fields. Therefore, this facility should be precisely monitored to make proposal for a suitable safety management system.

Comparison of Radiated Susceptibility of a Digital IC between Electric Field Coupling and Magnetic Field Coupling Based on a Circuit Apparoach

Abstract: In this study, the radiated susceptibility of a microstrip line with a digital IC is investigated. A circuit approach is used by converting external incident electric and magnetic fields into equivalent current and voltage sources, respectively, and the interference voltages induced at IC pins are simulated by using a circuit simulator. As a result, it is found that the digital IC exhibits a higher susceptibility for the magnetic field coupling compared to the electric field coupling.

Path Loss Analysis and Transceiver Development for Human Body Communication-Based Signal Transmission for Wearable Robot Control

Abstract: Human body communication (HBC) technology is attracting a lot of attention for monitoring vital data and controlling wearable robot In this paper, we focused on electroencephalogram (EEG) signal transmission from head to wrist in the 10–60 MHz HBC band This is based on an idea to transmit an EEG signal to control a wearable robot First, we clarified the basic transmission mechanism and characteristics using a highly simplified human body model Next, we performed a detailed path loss analysis by finite difference time domain simulation using an anatomical human body model with various postures Based on the analysis results, we identified the optimum transmitter position on the head and developed an impulse radio transceiver for verifying the feasibility of the technique The results show that the developed transceiver can provide a data rate of 10 Mbps and the bit error rate can be kept below 10−3 for transmitting the EEG signals from the head to the wrist Experimental validation with a bio-equivalent gel phantom also demonstrated high feasibility of transmitting the EEG signals along the human arm

Hybrid Analysis of Human Exposure from Base-Station Antennas in Underground Environment

Abstract: SUMMARY In this study we have employed an effective technique for dosimetric analyses of base station antennas in an underground environment. The technique combines a ray-tracing method and the finitedifference time-domain (FDTD) method to calculate the specific absorption rate (SAR) in the human body. The ray-tracing method was applied to evaluate the incident fields in relation to the exposed subject in a threedimensional space, while the FDTD method was used to calculate the detailed SAR distributions in the human body. A scenario under an underground passage with the installation of a top-loaded monopole antenna was analyzed to investigate the relationship between the actual antenna exposure and a plane-wave exposure. The results show that the plane-wave exposure overestimated the whole-body average SAR in most cases, although this was not always true for peak SAR. The finding implies not only the usefulness of the present uniform-exposure-based reference level for the whole-body average SAR evaluation but also the necessity of modeling actual underground environment for high-precision local peak SAR

Principles of Neural Science

Abstract: I have developed "tennis elbow" from lugging this book around the past four weeks, but it is worth the pain, the effort, and the aspirin. It is also worth the (relatively speaking) bargain price. Including appendixes, this book contains 894 pages of text. The entire panorama of the neural sciences is surveyed and examined, and it is comprehensive in its scope, from genomes to social behaviors. The editors explicitly state that the book is designed as "an introductory text for students of biology, behavior, and medicine," but it is hard to imagine any audience, interested in any fragment of neuroscience at any level of sophistication, that would not enjoy this book. The editors have done a masterful job of weaving together the biologic, the behavioral, and the clinical sciences into a single tapestry in which everyone from the molecular biologist to the practicing psychiatrist can find and appreciate his or

IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems Draft Amendment: Management Information Base Extensions

Abstract: This document provides updates to IEEE Std 802.16's MIB for the MAC, PHY and asso- ciated management procedures in order to accommodate recent extensions to the standard.

The Virtual Family—development of surface-based anatomical models of two adults and two children for dosimetric simulations

Abstract: The objective of this study was to develop anatomically correct whole body human models of an adult male (34 years old), an adult female (26 years old) and two children (an 11-year-old girl and a six-year-old boy) for the optimized evaluation of electromagnetic exposure. These four models are referred to as the Virtual Family. They are based on high resolution magnetic resonance (MR) images of healthy volunteers. More than 80 different tissue types were distinguished during the segmentation. To improve the accuracy and the effectiveness of the segmentation, a novel semi-automated tool was used to analyze and segment the data. All tissues and organs were reconstructed as three-dimensional (3D) unstructured triangulated surface objects, yielding high precision images of individual features of the body. This greatly enhances the meshing flexibility and the accuracy with respect to thin tissue layers and small organs in comparison with the traditional voxel-based representation of anatomical models. Conformal computational techniques were also applied. The techniques and tools developed in this study can be used to more effectively develop future models and further improve the accuracy of the models for various applications. For research purposes, the four models are provided for free to the scientific community.