A5047777790- Parallel Computing and Optimization Techniques
- Embedded Systems Design Techniques
- Interconnection Networks and Systems
- Distributed and Parallel Computing Systems
- Advanced Data Storage Technologies
- Advanced Optical Imaging Technologies
- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Modular Robots and Swarm Intelligence
- Earthquake Detection and Analysis
- Cloud Computing and Resource Management
- Robotics and Automated Systems
- Distributed systems and fault tolerance
- Semiconductor Lasers and Optical Devices
- Optical Network Technologies
- Advanced Optical Network Technologies
- Advanced Memory and Neural Computing
- Traffic control and management
- Cellular Automata and Applications
- Transportation Planning and Optimization
- Traffic Prediction and Management Techniques
- Robotics and Sensor-Based Localization
- Photorefractive and Nonlinear Optics
- Digital Holography and Microscopy
- Real-Time Systems Scheduling
Hokkaido University Hospital
2025
Utsunomiya University
2014-2024
Aichi Institute of Technology
2019-2021
Meteorological Research Institute
1990-2013
NEC (Japan)
2013
Hot Springs Research Institute of Kanagawa Prefecture
2012
Japan Meteorological Agency
1984-2012
Keio University
1986-2012
Tohoku University
2011
Kyocera (Japan)
2006
Background All clinical and biological manifestations related to postcardiac arrest ( CA ) syndrome are attributed ischemia–reperfusion injury in various organs including brain heart. Molecular hydrogen (H 2 has potential as a novel antioxidant. This study tested the hypothesis that inhalation of H gas starting at beginning cardiopulmonary resuscitation CPR could improve outcome . Methods Results Ventricular fibrillation was induced by transcutaneous electrical epicardial stimulation rats....
One functionality of an in-vehicle navigation system is route planning. Given a set origin-destination (O/D) pairs, there could be many possible routes for driver. A useful routing should have the capability to support driver effectively in deciding on optimum his preference. The objective this work model behavior area selection. In particular, research focuses search function typical in-car or dynamic guidance (DRG) system. work, we want emphasize need orientate selection method driver's...
The Japanese Hypertrophic Cardiomyopathy Registry Study was designed to provide comprehensive, real-world insights into the clinical characteristics and management of hypertrophic cardiomyopathy (HCM) in Japan. This multicentre, prospective study enrolled consecutive patients with HCM from 24 referral hospitals across Japan starting 2016. baseline 1485 by December 2019 are presented this analysis. median ages at registration diagnosis were 69 60 years, respectively, men accounting for 54%...
Intelligent robots demand complex information processing such as SLAM (Simultaneous Localization and Mapping) DNN (Deep Neural Network). FPGA (Field Programmable Gate Array) is expected to accelerate these applications with high energy efficiency. Introducing into difficult due its development costs. In order introduce easily a system on ROS (Robot Operating System) platform, ROS-compliant Component has been proposed. However, large communication latency between components severe problem....
Autonomous mobile robots require high-performance computation to meet variety of requirements functions, such as sensing, intelligent image processing and controlling actuators. We focus on FPGA a hardware platform for autonomous robot system. However, FPGA-based system is not effective in development cost, since it requires HDL-based design whose productivity relatively low. In order solve this problem, we have already proposed principle ROS-compliant component, which easy integration...
A method has been proposed to reduce the communication overhead in computer-generated hologram (CGH) calculations on parallel and distributed computing devices. The uses shifting property of Fourier transform decompose calculations, thereby avoiding data dependency communication. This enables full potential is verified by simulation optical experiments can achieve a 20 times speed improvement compared conventional methods, while using large sizes.
This paper proposes a method with encapsulating hardware description on ROS nodes for improving the productivity of robot development. To realize intellectual robots, we should satisfy constraints involving high performance, low power consumption, and energy efficiency. FPGA (Field Programmable Gate Array) is well-known to constraints. In conventional methods, apply into software ordinary system, need describe codes performing conversion process between abstraction level message degree...
A parallel computation method for large-size Fresnel computer-generated hologram (CGH) is reported. The was introduced by us in an earlier report as a technique calculating Fourier CGH from 2D object data. In this paper we extend the to compute 3D scale of problem also expanded 2 gigapixels, making it closer real application requirements. significant feature reported its ability avoid communication overhead and thereby fully utilize computing power devices. exhibits three layers parallelism...
A component-oriented FPGA design platform is proposed for robot system integration. FPGAs are known to be a power-efficient hardware platform, but the development cost of FPGA-based systems currently too high integrate them into systems. To solve this problem, we propose an component that allows devices easily integrated based on Robot Operating System (ROS). ROS-compliant components offer seamless interface between and software running CPU. Two experiments were conducted using components....
In recent years, robots are required to be autonomous and their robotic software sophisticated. Robots have a problem of insufficient performance, since it cannot equip with high-performance microprocessor due battery-power operation. On the other hand, FPGA devices can accelerate specific functions in robot system without increasing power consumption by implementing customized circuits. But is difficult introduce into large development cost an circuit compared software. Therefore, this...
This paper presents a novel method for architecture exploration of an intelligent robot system while satisfying high processing performance at low power by utilizing FPGA and remote computing resources. In order to ease development complexity in the conventional exploration, ROS-compliant component technology is employed. As case study, Visual SLAM (Self Localization Mapping) studied, which important realizing autonomous robots. Some part be off-loaded onto server outside processed parallel...
A large-scale interconnection network is a complex system that comprises numerous independent switching elements (routers). Its performance proportional to the offered traffic load if light. However, once surpasses certain threshold and becomes congested, its drastically degraded. Such nonlinear characteristics are empirically known. Nevertheless, congestion behavior has not been sufficiently investigated. In this paper, we present phase transition phenomena in interconnecting networks using...
Recently, mobile computing and embedded devices equipped with high performance components such as multicore processor GPU are becoming popular. In order to speedup user programs by making full use of these components, it is necessary optimize the program according runtime environment on various types devices. Binary code optimization one promising solution. Especially, in ARM-native for target devices, using LLVM compiler infrastructure binary considered quite useful. To realize this, we...
Driving is a demanding task which requires constant concentration and appropriate maneuvers of vehicle on the road. The introduction in-vehicle navigation route guidance system should be carried out with utmost care because abundant information that can provided to driver. In order increase acceptance level lower negative safety impacts systems, psychological consideration study model driver behavior crucial. focus this article design selection function for an system. issue criteria...
Predictors are inherent components of state-of-the-art microprocessors. Branch predictors discussed actively from diverse perspectives. Performance a branch predictor largely depends on the dynamic behavior executing program. Nevertheless, we have no effective metrics to represent nature program quantitatively. In this paper, introduce an information entropy idea and performance. Through simple application Shannon's entropy, new History Entropy, which quantitatively represents regularity...
A platform for networked FPGA system design, which is named "ORB Engine", proposed to add more controllability and design productivity on FPGA-based systems composed of software hardwired IPs. developer can define an object-oriented interface the circuit IP in FPGA, implement control sequence part using Java. The be handled through from variety programing languages like C++, Java, Python, Ruby so on. Application specific high-efficiency ORB (Object Request Broker) protocol processing...
Some characteristics of the earthquake swarm and volcanic tremors eastern Izu Peninsula in 1989 are investigated by using data obtained permanent seismological network Japan Meteorological Agency (JMA). During activity, shallow low-frequency earthquakes were observed from July 5 frequently 10. The epicenters 10 located near eruption site but occurred to south it. Volcanic when activity was on decline. spectra have two peaks, one at about 1Hz another a higher frequency. 13 associated with...
In this paper, we propose a monocular color-IR (MCIR) imaging system that can capture color and near infrared (NIR) light simultaneously under various lighting conditions. Our captures visible by using single 2 × filter array (CFA) image sensor with an optical notch merges both signals into image. To precisely reproduce the same as cameras, considered separating RGB from captured image, adjusting white balance for temperatures, chrominance saturation in accordance IR ratios. A prototype MCIR...
The RWC-1 is a massively parallel computer based on multi-threaded architecture. This architecture requires extremely high communication performance with reasonable hardware cost. ln this paper, we first introduce new class of direct interconnection networks called MDCE (Multidimensional Directed Cycles Ensemble extension). has many desirable features for including small degree, low latency, and throughput. thus adopted network. We have designed an router fabricated experimental VLSI chip....
Concentration index filter is a kind of spatial filters images, and its typical application diagnosis from medical images. This paper presents dedicated computing engine for concentration filtering. Original algorithm modified to extract full parallelism data width optimized maximizing clock speed minimizing hardware scale. Evaluation results reveal that the system runs 100 times faster than current workstation enables real-time diagnosis.
The Japan Meteorological Agency has deployed strain-meters in Shizuoka, Aichi, and Nagano Prefectures, aiming to detect a slow slip phenomenon that is expected occur just before the anticipated great earthquake of M8 class at plate boundary. In this paper we propose stacking method which data different stations are added according following procedure. First, observed waveform each station normalized by noise level. Then, wave form stacked one order magnitude signal ratio, reversing polarity...
In level 5 autonomous driving system, image recognition is required as multiplex safety technology. However, real time hard for existing microprocessors. Hence, implementation of system on FPGA useful to achieve driving. Therefore, this paper describes robot with processing using FPGA. Hough transform which generally used white line detection, requires high computing cost. We explain our new detection method features low computation As a result evaluation, performance software about 26.1...