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Journal of Environmental Sciences 2010年第6期22卷 892-897页

作者： Yoshiaki Tsuzuki Masato Fujii yasuo mochihara Kouki Matsuda Minoru Yoneda Research Center for Coastal Lagoon Environments Shimane University Ministry of Land InfrastructureTransportation and Tourism Environmental Engineering Graduate School of EngineeringKyoto University

The first social experiment program in Japan to reduce domestic wastewater pollutant discharge by ＂soft interventions＂ in households has been conducted in the Yamato-gawa River drainage area since 2005. The Yamato-gawa River has been listed as one of the worst water quality rivers in Japan because of the larger annual average BOD. ＂Hard interventions＂ including deployment of wastewater treatment facilities and artificial installation of natural purification facilities in the river has been conducted in these years to improve river water quality. At the first Yamato-gawa River social experiment program （YR-SEP） in March 2005, BOD at the monitoring point near the river mouth decreased about 6% during the Program. Natural purification effect along the river was evaluated in this article with one-dimensional water quality model for the six river sections. Larger biological oxygen consumption rate, kb, was estimated in the sections with artificially installed natural purification facilities. The effect of ＂soft interventions＂ in households in the YR-SEP was estimated as 25% BOD decrease in the nearest monitoring point to the river mouth, when all the households participate in the Program and BOD discharge reduction rate with ＂soft interventions＂ in households was 40%.

关键词： Yamato-gawa River "soft interventions" in households one-dimensional water quality model

PREPARATION OF POLYMER DISPERSED LIQUID CRYSTALS USING PHOTOPOLYMERIZATION

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Chinese Journal of Polymer Science 2001年第3期19卷 311-315页

作者： yasuo Hatate Department of Applied Chemistry and Chemical Engineering Faculty of Engineering Kagoshima University Kagoshima 890-0065 Japan

2-Hydroxyethyl methacrylate (HEMA) and styrene copolymers are prepared by photopolymerization. The electrooptical behavior and microstructure of the polymer dispersed liquid crystal films are investigated by using He-Ne laser and scanning electron microscopy, respectively. With increasing E7 content in the copolymer, droplet size increased, threshold voltage decreased.

关键词： electro-optical properties phase separation polymer dispersed liquid crystal

Ultrasonic echo signal fetures of dissimilar material bonding joints

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中国有色金属学会会刊：英文版 2004年第6期14卷 1050-1054页

作者：刚铁 yasuo TAKAHASHI State Key Lab of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China JWRI Osaka University Japan

An ultrasonic evaluation method of echo feature of diffusion bond joint between two dissimilar materials is presented. The echo signal was acquired by an automatic ultrasonic C-scan test system. It is found that the intensity of echo and its phase can be used to evaluate the joint quality, and interface products of dissimilar materials bonding can be evaluated by ultrasonic method.

关键词：超声波测试异金属扩散结合非破坏性演化

HYPERGAMES AND BAYESIAN GAMES:A THEORETICAL COMPARISON OF THE MODELS OF GAMES WITH INCOMPLETE INFORMATION

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Journal of Systems Science & Complexity 2012年第4期25卷 720-735页

作者： yasuo SASAKI Kyoichi KIJIMA Graduate School of Decision Science and Technology Tokyo Institute of Technology

The present study discusses the relationships between two independently developed models of games with incomplete information, hypergames （Bennett, 1977） and Bayesian games （Harsanyi, 1967）. The authors first show that any hypergame can naturally be reformulated in terms of Bayesian games in an unified way. The transformation procedure is called Bayesian representation of hypergame. The authors then prove that some equilibrium concepts defined for hypergames are in a sense equivalent to those for Bayesian games. Furthermore, the authors discuss carefully based on the proposed analysis how each model should be used according to the analyzer＇s purpose.

关键词： Bayesian game Bayesian representations of hypergame hypergame incomplete information."

Hierarchical Hypergames and Bayesian Games:A Generalization of the Theoretical Comparison of Hypergames and Bayesian Games Considering Hierarchy of Perceptions

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Journal of Systems Science & Complexity 2016年第1期29卷 187-201页

作者： SASAKI yasuo KIJIMA Kyoichi School of Knowledge Science Japan Advanced Institute of Science and Technology 1-1AsahidaiNomiIshikawaJapan Department of Value and Decision Science Tokyo Institute of Technology 2-12-1OokayamaMeguro-kuTokyoJapan

This paper discusses the relationship of two independently developed models of games with incomplete information,hierarchical hypergames and Bayesian *** can be considered as a generalization of the previous study on the theoretical comparison of simple hypergames and Bayesian games(Sasaki and Kijima,2012) by taking into account hierarchy of perceptions,i.e.,an agent's perception about the other agents' perceptions,and so *** authors first introduce the general way of transformation of any hierarchical hypergames into corresponding Bayesian games,which was called as the Bayesian representation of hierarchical *** authors then show that some equilibrium concepts for hierarchical hypergames can be associated with those for Bayesian games and discuss implications of the results.

关键词： Bayesian games game theory hierarchy of perceptions hypergames incomplete information

Evaluation of seismic behavior of box culvert buried in the ground through centrifuge model tests and numerical analysis

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Underground Space 2019年第2期4卷 147-167页

作者： Hitoshi Yatsumoto yasuo Mitsuyoshi yasuo Sawamura Makoto Kimura Maintenance Division Hanshin Expressway Company LimitedJapan Obayashi Corporation Construction DivisionJapan Department of Civil and Earth Resources Engineering Kyoto UniversityJapan

Japan has yet to establish a seismic design for road box culverts(RBCs)because past major earthquakes did not damage *** recent years,structures with enlarged sectional dimensions(the purpose of which is to optimize the internal space in RBCs)have become ***,the unknown seismic strength of such large RBCs makes RBC seismic designs increasingly *** seismic design methods have been developed for and applied to rectangular underground structures,e.g.,cut-and-cover tunnels,which are structurally similar to *** these methods are applicable to RBCs,it is uncertain whether they can be applied directly because there are currently no evaluation results from model tests on RBCs,which have unique structural features,e.g.,no haunch at the bottom of the ***,we verify a seismic behavior of an RBC and develop a method for evaluating it in order to establish a seismic design for *** conducted centrifuge model tests subjected to seismic force and a numerical analysis using an elastoplastic finite analysis method,in addition,we validated this analysis by comparing the test and analytical *** test results show RBCs will most likely develop rocking rotation when the ground strain exceeds approximately 0.08%.A comparison of the numerical and experimental results shows that this analysis can estimate the shear deformation behavior with approximately 90%accuracy in square cross-section ***,this analysis has tendency to underestimate the axial forces in each case and to overestimate the bending moments of some members in the case of wide cross-sections.

关键词： Box culvert Centrifuge model test Numerical analysis Shear deformation Rocking rotation

Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring

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Light(Science & Applications) 2023年第12期12卷 2711-2722页

作者： Yu-Chieh Lin Katsumi Midorikawa yasuo Nabekawa Attosecond Science Research Team RIKEN Center for Advanced Photonics2-1 HirosawaWakoSaitama 351-0198Japan

The carrier-envelope phase(CEP)of an ultrashort laser pulse is becoming more crucial to specify the temporal characteristic of the pulse's electric field when the pulse duration becomes shorter and attains the subcycle regime;here,the pulse duration of the intensity envelope is shorter than one cycle period of the carrier field *** this subcycle pulse involves a structured wavefront as is contained in an optical vortex(OV)pulse,the CEP has an impact on not only the temporal but also the spatial characteristics owing to the spatiotemporal coupling in the structured optical ***,the direct observation of the spatial effect of the CEP control has not yet been *** this study,we report on the measurement and control of the spatial wavefront of a subcycle OV pulse by adjusting the *** generate subcycle OV pulses,an optical parametric amplifier delivering subcycle Gaussian pulses and a Sagnac interferometer as a mode converter were integrated and provided an adequate spectral *** pulse duration of the generated OV pulse was 4.7 fs at a carrier wavelength of 1.54μ*** confirm the wavefront control with the alteration of the CEP,we developed a novel f-2f interferometer that exhibited spiral fringes originating from the spatial interference between the subcycle OV pulse and the second harmonic of the subcycle Gaussian pulse producing a parabolic wavefront as a reference;this resulted in the successful observation of the rotation of spiral interference fringes during CEP manipulation.

关键词： interferometer amplifier cycle

Nickel Electroplating

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材料热处理学报 2004年第05B期25卷 1122-1125页

作者： Toru Murakami yasuo Uchikoshiki Kazutoshi Komori C.Uyemura. & Co. Ltd. Osaka JapanUyemura-Solar(Shenzhen)Co.Ltd Shenzhen ChinaUyemura(Shanghai)Co.Ltd Shanghai China

Nickel electroplating has been used practically for decades, is easy to plate, but there is an unknown interest in it. Nickel electroplating as a basis of surface treatment is shown practically from basics to the applied electronics use. At first the basics of nickel electroplating, for example, purpose, use, merit & demerit, nickel plating solution, current efficiency, limiting current density, additional agents and their behaviors are surveyed. And the points of nickel deposition already practically used such as decorative nickel plating, satin nickel plating and functional nickel plating, which has very high throwing power and has been used for electronics, are described in detail.

关键词：镍电镀电积能力表面处理应用

Vertically Coupled Microring Resonator Filter :Versatile Building Block for VLSI Filter Circuits

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光学学报 2003年第S1期23卷 187-188页

作者： yasuo Kokubun Yokohama National Univ. Graduate School of Eng. Dept. of Electrical and Comp. Eng. 79-5 Tokiwadai Hodogaya Yokohama Japan

In this review, the recent progress in the development of vertically coupled micro-ring resonator filters is summarized and the potential applications of the filters leading to the development of VLSI photonics are de... 详细信息

关键词： FSR be of in as for Versatile Building Block for VLSI Filter Circuits Vertically Coupled Microring Resonator Filter

Synchronous double cancers of the common bile duct

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World Journal of Gastroenterology 2012年第41期18卷 5982-5985页

作者： Tatsuaki Sumiyoshi yasuo Shima Akihito Kouzuki Department of Gastroenterological Surgery Kochi Health Sciences CenterKochi 781-8555Japan

We report an extremely rare case of synchronous double cancers of the common bile duct without pancreaticobiliary *** two similar cases have been reported in the English *** retrograde cholangiopancreatography showed a tuberous filling defect in the middle and superior parts of the common bile duct,and mild stenosis in the inferior *** tomography(CT) showed a well enhanced mass in the middle and superior parts of the common bile duct.A single cancer of the middle and superior bile duct was suspected and extra-hepatic bile duct resection was *** eleven months after surgery revealed enhanced inferior bile duct wall and a slightly enhanced tumor within *** review of the CT images taken before first surgery showed enhanced inferior bile duct wall without intrabiliary tumor only on the delayed *** inferior bile duct tumor was suspected to have originally co-existed with the middle and superior bile duct *** was performed *** examination revealed that the middle and superior bile duct tumor was a moderately differentiated tubular adenocarcinoma while the inferior bile duct tumor was a papillary *** two tumors were separated and had different histological findings and growth patterns,further suggesting that they were two primary cancers.

关键词： Bile duct cancer Synchronous double can-cer Common bile duct Pancreaticobiliary maljunction Two primary cancers