Nowadays, quantum computers are attracting much interest. In current quantum computers, measurement instruments, which provide functions of controlling and reading out quantum bits (qubits), operate under room temperatur ... more
Superconductor devices are promising for building large-scale quantum computing systems. This article reports the current status and issues of the superconductor classical (digital and mixed-signal) circuit technology fo ... more
Quantum computer is able to compute some of the hard problems which cannot be solved by conventional ones. Toward practical application, large-scale integration of qubits is necessary. Solid-state devices, such as superc ... more
Installing semi-rigid coaxial cables and microwave components in a dilution refrigerator is essential to readout and control superconducting quantum processors. Here we discuss passive and active heat loads generated in ... more
Timing Controller for a Superconductor Microwave Switch using Adiabatic Quantum Flux Parametron Circuits
論文No: ページ数: 5 日付: 2022/05/01
著者: Hongxiang Shen (Department of Electrical and Computer Engineering, Yokohama National University), Naoki Takeuchi (The Research Center for Emerging Computing Technologies, The National Institute of Advanced Industrial Science and Technology (AIST)), Yuki Yamanashi (Department of Electrical and Computer Engineering, Yokohama National University/The Institute of Advanced Sciences, Yokohama National University), Nobuyuki Yoshikawa (Department of Electrical and Computer Engineering, Yokohama National University/The Institute of Advanced Sciences, Yokohama National University)
キーワード : quantum computer，adiabatic quantum flux parametron，AQFP，single flux quantum，SFQ processor，microwave switch
We are developing a microwave pulse generator, whose pulse width and amplitude can be arbitrarily controlled, to manipulate superconducting quantum computing systems. The proposed microwave pulse generator is made using ... more
The application of silicone water repellents to hydrophobic coatings by atmospheric pressure plasma (APP) generated by dielectric barrier discharge (DBD) was investigated. We compared the effects of silicone water repell ... more
This paper presents partial discharge characteristics and film thickness wear till dielectric breakdown under bipolar repetitive impulse voltage application to twisted pair enamel wire added with nano-size boehmite to po ... more
The method to obtain the surface resistivity of insulating materials is standardized by IEC62631-3-2, where four types of line-electrode systems are presented. We have verified the effectiveness of the line-electrode usi ... more
Nb or Ta doped vanadium dioxide (VO2) thin films were grown on r-plane sapphire substrates by a metal-organic decomposition (MOD) method. Their crystallinities of the VO2 thin films were evaluated by XRD, AFM and XPS. It ... more
Since charge injection from metal into dielectric leads to electrical degradation and failure of various electrical and power devices, it is essential to reveal the band alignment of the metal/dielectric interface. Howev ... more
The recent progress of simulation techniques for the current interruption in high-voltage gas circuit breakers (GCBs). GCB is one of the key components for a stable supply of electricity in the electric power system. Jap ... more
Conventional synchronous generators have been replaced by renewable energy source such as photovoltaics generation and wind turbine generation interconnected through inverters. As the capacity of synchronous generators i ... more
In order to improve the insulation diagnosis of C-GIS, we developed the four-terminal surface current sensor and the method to estimate an occurrence direction of partial discharges. In this method, the accuracy of the d ... more
In order to protect electrical equipment from lightning, it is important to learn about the actual situation of electrical equipment damages due to lightning. We are continuously investigating lightning damage from 2011, ... more
Quasi-Two-Dimensional Numerical Analysis of Influence of Taylor Vortex and Eddy Current on Generation Characteristics of Co-axial MHD Energy Conversion Device under Laminar Flow
Quasi-two-dimensional magnetohydrodynamic (MHD) numerical simulation was conducted to clarify the power generation characteristics of a co-axial MHD energy conversion device under laminar flow. The numerical results were ... more
Lightning current to a radar tower near the coast of the Sea of Japan has been observed since 2014. Positive current pulses exceeding +140kA and negative single pulses exceeding -30kA were observed. The characteristics o ... more
We developed a small coil and oscillator system for the hyperthermia of magnetic nanoparticles. The inner diameter and the length of the coil are 50 Φ and 60 mm, and we used them for the mice experiments. The frequency i ... more
VR has been applied to medical treatment and welfare, and there are more and more opportunities for the elderly and recuperators to use VR. However, it is difficult for the elderly and recuperators to wear head-mounted d ... more
To understand the underlying neuronal representation for object recognition, we designed this study to investigate the changes in N1, the first negative event-related potential component, accompanied by object discrimina ... more
Patient transfer during nursing care imposes a heavy burden on long-term caregivers, frequently causing back pain. It is therefore necessary to improve nursing skills in order to reduce the burden on caregivers so as to ... more
In this study, we created a VR system using an HMD that allows nursing college students to simulate delirium, and clarified the physiological and psychological changes that occur when simulating delirium. The subjects we ... more
Convolutional Neural Network for Octave Illusion Classification
論文No: ページ数: 7 日付: 2022/05/01
著者: Nina Pilyugina (Graduate School of Advanced Science and Technology, Tokyo Denki University), Akihiko Tsukahara (School of Science and Engineering, Tokyo Denki University), Keita Tanaka (Graduate School of Advanced Science and Technology, Tokyo Denki University/School of Science and Engineering, Tokyo Denki University)
キーワード : auditory illusion，octave illusion，convolutional neural network，deep learning，magnetoencephalography
The octave illusion occurs when two tones with one-octave differences are alternately played to both ears repeatedly. This study aims to classify participants into illusion and non-illusion groups by applying a convoluti ... more
The purpose of this study was to develop a computerized classification method for low-grade gliomas (LGGs) with/without 1p/19q codeletion on brain MRI using multi-scale 3D-convolutional neural networks (Multi-scale 3D-CN ... more
Tooth Localization using YOLOv3 for Dental Diagnosis on Panoramic Radiographs
論文No: ページ数: 6 日付: 2022/05/01
著者: Toan Huy Bui (Course of Science and Technology, Graduate School of Science and Technology, Tokai University), Kazuhiko Hamamoto (School of Information and Telecommunication Engineering, Tokai University), May Phu Paing (School of Engineering, King Mongkut's Institute of Technology Ladkrabang)
キーワード : panoramic radiograph，medical image processing，deep learning，object detection，computer-aided diagnosis
Oral health is one of most major concerns that affect the life quality of billions of people around the world. Diagnosis treatment usually takes time due to the lack of doctors compared to a huge number of patients. Many ... more
The purpose of this study was to assess the influence of ageing on reaching motion using a simple and quantitative method. An Electronic Evaluation System of Upper Extremity Function incorporating a motion sensor was use ... more
The rich dynamics of spatio-temporal activities in the neural system could be considered a computational resource. In this work, we attempted to quantify the capacity of information processing in the rat auditory cortex ... more
The rich dynamics of spatio-temporal activity patterns in the brain might be exploited in the neuronal information processing. In dissociated cultures of neurons, we attempted to evaluate information processing capacity ... more
Computerized Classification Method for Histological Classification of Masses on Breast Ultrasonographic Images Using Convolutional Neural Networks with ROI Pooling
It can be difficult for clinicians to correctly determine histological classifications of masses on breast ultrasonographic images. The purpose of this study was to develop a computerized classification method for histol ... more
In recent years, non-invasive monitoring system for blood viscosity has been widely discussed. We have proposed a method to estimate the blood viscosity by measuring the degree of red blood cell aggregation with image co ... more
