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The core-multishell nanowires of n-InP/ i-GaInAs/ p-InP were successfully grown on an InP(111)B substrate by low-pressure metal organic vapor phase epitaxy (MOVPE) using an indium self-catalyst. The self-catalytic vapor-liquid-solid (VLS) mode was used to obtain high-quality nanowires in which a deposited indium droplet acts as the catalyst instead of a metal particle, as in the case of the conventional...
Photoluminescence emission of InP/GalnAs/InP coremultishell nanowires was obtained at room temperature. InP nanowires were grown on InP(111)B substrate by selfcatalytic VLS mode of MOVPE using an indium catalyst. InP-core and GaInAs-shell structure was grown by changing the growth temperature. We have successfully obtained the PL emission from these core-shell nanowires at room temperature, and measured...
This paper describes the fuse-blowing characteristics for higher-voltage direct current (HVDC) power feeding systems. We developed a new fuse model, and evaluated the fuse-blowing characteristics and the effect of cable length. From the results, the electrical stability of HVDC power feeding system when a shorting accident or an overcurrent occurs is discussed.
A higher voltage direct-current (HVDC) power feeding system for data centers has many advantages and is presently being studied in many countries. This system is composed of a rectifier, power distribution cabinet (PDC), batteries, and ICT equipment, and the configuration is similar to a -48-V DC power feeding system. The power feeding voltage is about 400 V. We developed a prototype of an HVDC power...
In this paper, we aim to capture dependency among high correlated attributes in a sliding window of data streams at any time. Naive solutions cannot address combinatorial explosion problems. In order to generate highly correlated sets, we propose a candidate-generation rule based on Jaccard distance, and a generation method based on min-hashing functions to estimate the Jaccard distance without requiring...
Recently, power consumption of server computers is one of the most important topics. Although DVS (dynamic voltage scaling) can reduce power consumption, this method is only used at idle time or low load computation time, generally. In this paper, we propose a task scheduling algorithm for reducing power consumption especially at high load computation time. DVS is applied to tasks that are not in...
In this paper, we propose a practical band estimation method for periodic superlattices by using semi-infinite periodic model, which is located in the middle of finite periodic model and infinite periodic model. According to the model proposed, we can estimate not only band structures but also ripples in passbands for periodic superlattices with simple calculation by applying image parameters in circuit...
Model-based predictive approaches have been receiving increasing attention as a valuable tool to reduce cost in drug development. In this work, a model-fltting-based approach for solving drug actions using cardiac action potential recordings is investigated. Contribution of major ion currents in cardiac membrane excitation has been intensively studied. Cardiac cell models nowadays reproduce APs very...
We have developed a long-life nickel-metal hydride (Ni/MH) battery that has a lifetime of 15 years at 30/spl deg/C and operates at temperatures from -10/spl deg/C to 60/spl deg/C. This performance was achieved by improving the Ni/MH cells and optimizing their charging. Optimizing the metal-hydride and electrolyte contents of the Ni/MH cells extended cell lifetime. Use of an intermittent charging method...
Dry type transformers for use in buildings and industrial plants have increased in number in order to meet new safty requirements in Japan which prohibit the use of PCB.
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