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Journal of Mechanics Engineering and Automation 2013年第5期3卷 298-302页

作者： Kazumasa Kawasaki katsuya fukazawa Institute for Research Collaboration and Promotion Niigata University Niigata 950-2181 Japan Department of Robotics and Mechatronics Tokyo Denki University Tokyo 101-8457 Japan

The corrective machining to compensate the resulting errors is usually tried at plural times based on the trial-and-error process when the machining is realized in die and mold manufacturing. This corrective machining has an influence on accuracy and efficiency and is an important factor. The measurement system for measuring the forms of die and mold at all times is essential in order to machine the die and mold with high accuracy and efficiency. However, the problems of management and operation errors are found in compensating process of die and mold machining. In this paper, an online machining and measurement system in die and mold manufacturing is developed in order to overcome these problems. In this online system, 2-axis control system is added to a surface roughness measuring instrument, and both NC machining program and measured data are linked and controlled using a same computer. Therefore, the machining and measurement can be recognized for consistent process, and can be realized on the machine. This system has the advantages such as the high accuracy, low-price, and online convenience and so on. The possibility of practical use of this online system was investigated by fundamental experiments.

关键词： Die and mold machining measurement online system.

Current and future trends in whole genome sequencing in cancer

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Cancer Biology & Medicine 2024年第1期21卷 16-20页

作者： Yuki katsuya Department of Experimental Therapeutics National Cancer Center Hospital5-1-1 TsukijiChuo-kuTokyo 104-0045Japan

Cancer remains a formidable global health challenge affecting millions of lives *** decades,conventional cancer treatments used a one-size-fits-all approach,overlooking the intricate genetic variations that drive *** emergence of cancer genomics has ushered in a new era of personalized and targeted cancer *** Human Genome Project,which was launched in 1990 and completed in 2003。

关键词： cancer Cancer annually

Development and Social Implementation of Smartphone App Nige-Tore for Improving Tsunami Evacuation Drills: Synergistic Effects Between Commitment and Contingency

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International Journal of Disaster Risk Science 2020年第6期11卷 751-761页

作者： katsuya Yamori Takashi Sugiyama Disaster Prevention Research Institute Kyoto UniversityKyoto 611-0011Japan

This research explored how we can improve tsunami evacuation behavior,which has been a major social issue since the 2011 Great East Japan Earthquake and *** introduce Nige-Tore,a smartphone app for supporting tsunami evacuation drills,which was developed within an interdisciplinary research ***-Tore serves as an effective interface tool that successfully visualizes the dynamic interactions between human actions(evacuation behavior)and natural phenomena(tsunami behavior).Drill participants can check,on their smartphone,the estimated inundation area of the approaching tsunami,along with their own current evacuation *** results of real-world trials using NigeTore show that the app is more powerful than conventional devices and methods that have been used in tsunami evacuation training,such as hazard maps and traditional drills that do not make use of any apps,because Nige-Tore provides an interface that enables commitment and contingency thinking—which at first glance appear to represent different orientations—to not only coexist but to synergize.‘‘Commitment’’(devotion or involvement)refers to the act of immersing oneself in and viewing as absolute one particular scenario or its potential to be actualized,given conditions in which infinite scenarios may be actualized,depending on the interactions between human systems and natural systems.‘‘Contingency’’thinking(an accidental or incidental state)refers to the act of relativizing and separating oneself from any particular scenario or its potential to be actualized,given the same *** synergistic effect of‘‘commitment’’and‘‘contingency’’thinking also expands people’s capacity to cope with unexpected and unforeseen events.

关键词： Commitment Contingency thinking Evacuation behavior Japan Smartphone app Tsunami

Synergistic Integration of Detailed Meteorological and Community Information for Evacuation from Weather-Related Disasters: Proposal of a ‘‘Disaster Response Switch’’

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International Journal of Disaster Risk Science 2020年第6期11卷 762-775页

作者： Kensuke Takenouchi katsuya Yamori Disaster Prevention Research Institute Kyoto UniversityUji Kyoto 606-0011Japan

Meteorological information used for disaster prevention has developed rapidly in terms of both type and *** latest forecasting models can predict weather with very high resolutions that can characterize disaster risk at the local ***,this development can lead to an overdependency on the information and a wait-and-see attitude by the *** the same time,residents share and use various types of information for disaster response,such as local conditions,in addition to official disaster *** research in Japan verified the practicality and efficiency of synergistically integrating these types of information by examining actual evacuation *** current numerical forecasting models sufficiently identify locality from the viewpoint of various administrative scales such as prefectures,municipalities,and school districts,but the improvements to these models have failed to improve residents’judgment in successful evacuation *** therefore analyzed the relationship between meteorological information and residents’disaster response and confirmed that they were strongly correlated and were contributing factors in preventing *** revealed differences between a community’s disaster prevention culture and the disaster information *** led us to propose a new concept in community disaster prevention that we call the‘‘disaster response switch,’’which can serve as a data-driven risk management tool for communities when used in combination with advanced meteorological disaster information.

关键词： Community disaster prevention Disaster response High-resolution forecasting model Japan Meteorological information Risk communication

Numerical Study of the Effects of the Secondary Diaphragm and Contact Surface in Expansion Tubes

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Journal of Thermal Science 2004年第1期13卷 30-33页

作者： Kazuyuki Kage katsuya Ishimatsu Toyoyasu Okubayashi Department of Production Systems Engineering Oita University700 DannoharuOita870-1192JapanDepartment of Production Systems EngineeringOita University700 DannoharuOita870-1192JapanDepartment of Production Systems EngineeringOita University700 DannoharuOita870-1192Japan

The interaction of the shock reflected at a secondary diaphragm with the primary contact in six cases, i.e. the strengths and shapes of the contact surface are different, were explored by numerical study. The influences of the strength and shape of the contact on the developing wave pattern and the quality of the test gas are illustrated by many kinds of figures (e.g. the time-distance diagrams of the acoustic impedance contours on the axis, the acoustic impedance contours, and the time histories of pilot and static pressures).

关键词： expansion tubes secondary diaphragm shock propagation contact surface

Numerical Study of Shock Waves Propagating through Right Angled Multiple Elbows

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Journal of Thermal Science 2005年第3期14卷 254-257页

作者： Kazuyuki KAGE Mihoko SHIROYAMA katsuya ISHIMATSU Department of Mechanical and Energy Systems Engineering Oita University 700 Dannoharu Oita 870-1192 Japan ProfessorDepartment of Mechanical and Energy Systems Engineering Oita University 700 Dannoharu Oita 870-1192 JapanDepartment of Mechanical and Energy Systems Engineering Oita University 700 Dannoharu Oita 870-1192 Japan

The details of the shock propagated through the right angled multiple elbows (mainly double elbow and fourfold elbow) are investigated by the numerical study. Computations were carried out by solving the two-dimensional compressible Navier-Stokes equations by using the total variation diminishing (TVD) scheme. Computations were performed for six types of elbow (two types of double elbow and four types of fourfold elbow) and two incident shock Mach numbers (Ms=1.5, 2.3). The effects of the direction and number of the bends in the stabilizing, merging and attenuating processes of the shock are numerically explored by various diagrams such as pressure contours, pressure distributions on the walls and time histories of the pressure contours, and the strength of the shock front at the location of about 20 times the length for each type of elbows was displayed.

关键词： shock wave multiple elbow shock diffraction non-uniform shock merger of shock

Water Management for Improvement of Rice Yield,Appearance Quality and Palatability with High Temperature During Ripening Period

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Rice science 2021年第4期28卷 409-416,I0038页

作者： Yuji Matsue katsuya Takasaki Jun Abe Global Innovation Center Kyushu UniversityMinami-kuFukuoka 815-8540Japan AGL Co LtdAsoKumamoto 869-2225Japan Faculty of Agriculture Tokai UniversityHigashi-kuKumamoto 862-8652Japan

To clarify the optimal water management in large-scale fields under high temperatures at the ripening period,effective water managements during this period for improvement of yield,appearance quality and palatability were *** with intermittent irrigation and flooded irrigation,the soil temperature with saturated irrigation remained low throughout the day,and the decrease rate of the bleeding rate of hills was the *** results suggested that the saturated irrigation maintained root *** the three irrigation types,the number of spikelets per m2 and 1000-grain weight were similar,however,saturated irrigation resulted in significantly higher rice yield due to improvement in the percentage of ripened *** saturated irrigation produced a high percentage of perfect rice grains and thicker brown rice grain,furthermore,the palatability of cooked rice was excellent because protein content and hardness/adhesion ratio were both ***,under high-temperature ripening conditions,soil temperature was lowered and root activity was maintained when applying saturated irrigation after heading *** results indicated that saturated irrigation is an effective countermeasure against high-temperature ripening damage.

关键词： appearance quality root activity high-temperature ripening damage palatability saturated irrigation soil temperature water management rice yield intermittent irrigation flooded irrigation

Lyapunov function-based obstacle avoidance scheme for a two-wheeled mobile robot

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控制理论与应用（英文版） 2008年第4期6卷 399-404页

作者： Akira INOUE katsuya SEKIGUCHI Department of Systems Engineering

An obstacle avoidance scheme of a two-wheeled mobile robot is shown by selecting an appropriate Lya- punov function. When considering the obstacle, the Lyapunov function may have some local minima. A method which erases the local minima is proposed by using a function which covers the minima with a plane surface. The effectiveness of the proposed method is verified by numerical simulations.

关键词： Obstacle avoidance Lyapunov function Mobile robot Robot control

G2MF-WA:Geometric multi-model fitting with weakly annotated data

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Computational Visual Media 2020年第2期6卷 135-145页

作者： Chao Zhang Xuequan Lu katsuya Hotta Xi Yang University of Fukui Fukui910-8507Japan Deakin University Waurn Ponds3216Australia The University of Tokyo Tokyo113-8656Japan

In this paper we address the problem of geometric multi-model fitting using a few weakly annotated data points,which has been little studied so *** weak annotating(WA),most manual annotations are supposed to be correct yet inevitably mixed with incorrect *** WA data can naturally arise through interaction in various *** example,in the case of homography estimation,one can easily annotate points on the same plane or object with a single label by observing the *** by this,we propose a novel method to make full use of WA data to boost multi-model fitting ***,a graph for model proposal sampling is first constructed using the WA data,given the prior that WA data annotated with the same weak label has a high probability of belonging to the same *** incorporating this prior knowledge into the calculation of edge probabilities,vertices(i.e.,data points)lying on or near the latent model are likely to be associated and further form a subset or cluster for effective proposal *** generated proposals,α-expansion is used for labeling,and our method in return updates the *** procedure works in an iterative *** experiments validate our method and show that it produces noticeably better results than state-of-the-art techniques in most cases.

关键词： geometric multi-model fitting weak annotation multi-homography detection two-view motion segmentation

PMSSC:Parallelizable multi-subset based self-expressive model for subspace clustering

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Computational Visual Media 2023年第3期9卷 479-494页

作者： katsuya Hotta Takuya Akashi Shogo Tokai Chao Zhang Department of Engineering University of FukuiFukui-shi 910-8507Japan Faculty of Science and Engineering Iwate UniversityMorioka-shi 020-8551Japan

Subspace clustering methods which embrace a self-expressive model that represents each data point as a linear combination of other data points in the dataset provide powerful unsupervised learning ***,when dealing with large datasets,representation of each data point by referring to all data points via a dictionary suffers from high computational *** alleviate this issue,we introduce a parallelizable multi-subset based self-expressive model(PMS)which represents each data point by combining multiple subsets,with each consisting of only a small proportion of the *** adoption of PMS in subspace clustering(PMSSC)leads to computational advantages because the optimization problems decomposed over each subset are small,and can be solved efficiently in ***,PMSSC is able to combine multiple self-expressive coefficient vectors obtained from subsets,which contributes to an improvement in *** experiments on synthetic and real-world datasets show the efficiency and effectiveness of our approach in comparison to other methods.

关键词： subspace clustering self-expressive model big data subsetting