Search Results 1-20 of 242

  • An Efficient Blacklistable Anonymous Credential System with Policy-Based Reputation Using Accumulator  [in Japanese]

    新居 稜介 , 中西 透

    コンピュータセキュリティシンポジウム2019論文集 (2019), 1257-1264, 2019-10-14

    IPSJ 

  • Development of Water Hydraulic Servo Valve for Active Charge Accumulator and Applied to Cylinder Control  [in Japanese]

    高橋 悟 , 吉田 太志 , 飯尾 昭一郎 , 北川 能

    フルードパワーシステム講演会講演論文集 = The proceedings Conference of Japan Fluid Power System Society, 53-55, 2019

  • Development of a Liquid Flow Pulsation Damper which Works as Power Generator  [in Japanese]

    森 賢太郎 , 飯尾 昭一郎

    qフルードパワーシステム講演会講演論文集 = The proceedings Conference of Japan Fluid Power System Society, 95-97, 2019

  • Experimental Investigation on Oil Outflow Characteristics in Horizontal Compressor:-2nd Report: Reduction of Oil Circulation-  [in Japanese]

    MORIYAMA Takashi , MURAKAMI Hiroki

    <p><tt>冷媒用圧縮機では,起動時に内部の潤滑油に溶解していた冷媒液が急激に気化して発泡することで,油が多量に吐出して枯渇しやすくなる.本研究では,特に油吐出量が多い横置き圧縮機の油枯渇を抑制するために油分離器またはアキュムレータを接続した場合において,起動時の過渡的な油と冷媒の流動を冷媒-油環境下の実験で評価した.本実験では非定常油流量の測定と圧縮機内部の液面挙動の可 …

    Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 36(1), 19, 2019

    J-STAGE 

  • Development for a Pressure Accumulation System Using the Cold Energy Latent in a Cold District  [in Japanese]

    USUKI Kentaro , ADACHI Takahiro

    … our study,we develop a new method how to use cold energy in a cold area.In the system,a basic principle that the volume of water shows ten percent increase when it is frozen.If the air and water are enclosed in an airtight container at the same time,the air is pressed by the frozen water when the water starts to freeze.The pressed air can be stored into an accumulator.Even in a winter season in a cold area,the air temperature outside can across the freezing point in a day.This means that the phase …

    The Proceedings of Mechanical Engineering Congress, Japan 2019(0), J05318P, 2019

    J-STAGE 

  • An Efficient Blacklistable Anonymous Credentials without TTP of Tracing Authority Using Pairing-Based Accumulator

    AIKOU Yuu , SADIAH Shahidatul , NAKANISHI Toru

    … Therefore, the anonymous credential system using a blacklist without the TTP of tracing authority has been proposed, where blacklisted anonymous users can be blocked. … Recently, an RSA-based blacklistable anonymous credential system with efficiency improvement has been proposed. … However, this system still has an efficiency problem: The data size in the authentication is <i>O</i>(<i>K'</i>), where <i>K'</i> …

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E102.A(12), 1968-1979, 2019

    J-STAGE 

  • CHARACTERISTICS EVALUATION OF ACTIVE SEISMIC RESPONSE CONTROL SYSTEM BY UTILIZING ENERGY CONVERSION IN DAMPERS BASED ON HYDRAULIC TECHNOLOGY  [in Japanese]

    NIWA Naoki

    …  We have reported an active seismic response control system by making use of an energy conversion in damping devices. … This system converts the vibration energy of the structure by large earthquakes with a damper, and accumulates it. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (746), 537-546, 2018-04

    J-STAGE  AIJ 

  • Feasibility Study on a Pressure Pulsation Absorber for Vibration Power Generation  [in Japanese]

    MORI Kentaro , IIO Shouichiro

    <p>This study is focused on development of a vibration power generator which can also suppress pressure pulsation in liquid flow pipelines. A prototype device was made and tested in a water hydr …

    The Proceedings of the Fluids engineering conference 2018(0), OS15-3, 2018

    J-STAGE 

  • Development for a Pressure Accumulation System Using the Cold Energy Latent in a Cold District  [in Japanese]

    Usuki Kentaro , Adachi Takahiro

    … In the system, a basic principle that the volume of water shows ten percent increase when it is frozen. … The pressed air can be stored into an accumulator. … Then, the pressure from the pressed air can be increased in an accumulator due to the repeated phase change. … We develop a new cold energy conversion system in this study. …

    The Proceedings of the Thermal Engineering Conference 2018(0), 0148, 2018

    J-STAGE 

  • NONLINEAR DYNAMIC SIMULATION OF HYDRAULIC POWER TAKE-OFF SYSTEM FOR WAVE-POWER GENERATION

    Yue Xuhui , Geng Dazhou , Wang Weiyu , Chen Qijuan

    … Hydraulic power take-off (PTO) system is the optional transmission for oscillating-bodies wave energy converters. … This paper establishes the nonlinear dynamic model of typical hydraulic PTO system. … The pressure bound of high-pressure accumulator is also considered. … Its results demonstrate that the hydraulic PTO system has Coulomb damping characteristic and that the high-pressure accumulator can stabilize pressure and flow. …

    Grand Renewable Energy proceedings 1(0), 244, 2018

    J-STAGE 

  • Soave-Redlich-Kwong Adiabatic Equation for Gas-loaded Accumulator  [in Japanese]

    ZHANG Shuce , IWASHITA Hiromu , SANADA Kazushi

    … The Soave-Redlich-Kwong equation is the most accurate real gas model for representing accumulator behavior, but it is relatively complex mathematical equation. … For simulating accumulator dynamic behavior, it has been used by combining with a thermal time constant model. …

    TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY 49(3), 65-71, 2018

    J-STAGE 

  • Energy Efficiency Improvement of Water Hydraulic Motor System with Reducing Pump Supply Pressure  [in Japanese]

    YAGISAWA Ryo , ITO Kazuhisa , Ngoc Pha PHAM , IKEO Shigeru

    … Here, there are two solutions to achieve the energy-saving: reducing the restriction loss through control valves, and applying the energy recovery module with an accumulator. … In oil hydraulic systems, the independent metering system which includes two control valves for one actuator to reduce the restriction loss through valves has been proposed. … This system applies a variable displacement pump to control the pump supply flow. …

    TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY 49(3), 72-79, 2018

    J-STAGE 

  • A Mathematical Model of a Bladder-type Accumulator Considering Heat Conduction  [in Japanese]

    MIYASHITA Shuto , SANADA Kazushi

    … <p>Accumulator is an important component for oil-hydraulic circuits. … For predicting accumulator performance, mathematical models of the accumulator have been investigated by many researchers. … In the mathematical models of accumulator, an equation of state of gas, thermodynamics, and heat transfer have been considered. …

    TRANSACTIONS OF THE JAPAN FLUID POWER SYSTEM SOCIETY 49(2), 49-55, 2018

    J-STAGE 

  • Blacklistable Anonymous Credential System with Reputation Using Accumulator  [in Japanese]

    金谷 健士 , 中西 透

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117(370), 59-65, 2017-12-21

  • Blacklistable Anonymous Credential System with Reputation Using Accumulator  [in Japanese]

    金谷 健士 , 中西 透

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 117(369), 59-65, 2017-12-21

  • Accumulator for Monotone Formulas and its Application to Anonymous Credential System

    Shahidatul Sadiah , Toru Nakanishi , Nasima Begum , Nobuo Funabiki

    … An anonymous credential system allows a user to convince a service provider anonymously that he/she owns certified attributes. … Previously, a system to prove AND and OR relations simultaneously by CNF formulas was proposed. … To achieve a constant-size proof of the formula, this system adopts an accumulator that compresses multiple attributes into a single value. …

    情報処理学会論文誌 58(12), 2017-12-15

    IPSJ 

  • Study on Active Charge Accumulator for Aqua Drive System : Effective Parameters on Boosting Performance  [in Japanese]

    髙橋 悟 , 前田 和久 , 吉田 太志 , 飯尾 昭一郎 , 北川 能

    フルードパワーシステム講演会講演論文集, 51-53, 2017

  • Influence of Charging Pressure on Boost Process of Active Charge Accumulator  [in Japanese]

    MAEDA Kazuhisa , TAKAHASHI Satoru , YOSHIDA Futoshi , IIO Shouichiro

    The Proceedings of Conference of Hokuriku-Shinetsu Branch 2017.54(0), B043, 2017

    J-STAGE 

  • Development of Component to Reduce Pressure Pulsation in Oil-hydraulic System  [in Japanese]

    SAKURAI Yasuo , HYODO Norikazu , AIBA Kenichi

    … In an oil-hydraulic system, since a positive displacement pump is generally employed, pressure pulsation is generated, which causes oscillation, noise and so on. … In general, an accumulator is interposed to suppress it. … However, when using an accumulator, regular maintenance is necessary to maintain its performance. … In this study, a component to reduce pressure pulsation in oil-hydraulic system is proposed. …

    The Proceedings of the Symposium on the Motion and Vibration Control 2017.15(0), B06, 2017

    J-STAGE 

  • Accumulator for Monotone Formulas and its Application to Anonymous Credential System

    Sadiah Shahidatul , Nakanishi Toru , Begum Nasima , Funabiki Nobuo

    … <p>An anonymous credential system allows a user to convince a service provider anonymously that he/she owns certified attributes. … Previously, a system to prove AND and OR relations simultaneously by CNF formulas was proposed. … To achieve a constant-size proof of the formula, this system adopts an <i>accumulator</i> …

    Journal of Information Processing 25(0), 949-961, 2017

    J-STAGE 

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