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Stratifying the risk of lymph node metastasis in undifferentiated-type early gastric cancer

World Journal of Gastroenterology 2015年第9期21卷 2683-2692页

作者： Yukiko Asakawa Masahiko Ohtaka Shinya Maekawa Mitsuharu Fukasawa Yasuhiro Nakayama Tatsuya Yamaguchi Taisuke Inoue Tomoyoshi Uetake Minoru Sakamoto Tadashi Sato Yoshihiko Kawaguchi Hideki Fujii Kunio Mochizuki Masao Hada Toshio Oyama Tomotaka Yasumura Kosaku Omata Atsushi Nishiyama Keiichi Naito hideo hata Yoshiaki Haba Kazuyuki Miyata Haruhisa Saitoh Yoichi Yamadera Kazuo Miura Akira Kawaoi Tohru Abe Hajime Tsunoda Yuji Honda Masayuki Kurosaki Nobuyuki Enomoto First Department of Internal Medicine Faculty of MedicineUniversity of YamanashiYamanashi 409-3898Japan First Department of Surgery Faculty of MedicineUniversity of YamanashiYamanashi 409-3898Japan Department of Pathology Faculty of MedicineUniversity of YamanashiYamanashi 409-3898Japan Department of Surgery Yamanashi Prefectural Central HospitalYamanashi 400-8506Japan Department of Pathology Yamanashi Prefectural Central HospitalYamanashi 400-8506Japan Department of Surgery Social Insurance Yamanashi HospitalYamanashi 400-0025Japan Department of Pathology Social Insurance Yamanashi HospitalYamanashi 400-0025Japan Department of General Surgery Kofu Kyoritsu HospitalYamanashi 400-0034Japan Department of Pathology Kofu Kyoritsu HospitalYamanashi 400-0034Japan Department of Surgery Kofu Municipal HospitalYamanashi 400-0832Japan Department of Pathology Kofu Municipal HospitalYamanashi 400-0832Japan Department of Surgery Yamanashi Kosei HospitalYamanashi 405-0033Japan Department of Surgery Kanoiwa General HospitalYamanashi 405-0018Japan Department of Pathology Kanoiwa General HospitalYamanashi 405-0018Japan Department of Surgery Social Insurance Kajikazawa HospitalYamanashi 400-0601Japan Department of Surgery Kofu National HospitalYamanashi 400-0006Japan Department of Surgery Fujiyoshida Municipal Medical CenterYamanashi 403-0005Japan Division of Gastroenterology and Hepatology Musashino Red Cross HospitalTokyo 180-0023Japan

AIM:To study how lymph node metastasis(LNM) risk is stratified in undifferentiated-type early gastric cancer(undiff-EGC) dependent on combinations of risk ***:Five hundred and sixty-seven cases with undiff-EGC undergoing gastrectomy with lymphadenectomy were examined *** clinicopathological factors of patient age,location,size,an endoscopic macroscopic tumor form,ulceration,depth,histology,lymphatic involvement(LI) and venous involvement(VI),LNM risk was examined and stratified by conventional statistical analysis and datamining ***:LNM was positive in 44 of 567 cases(7.8%).Univariate analysis revealed > 2 cm,protrusion,submucosal(sm),mixed type,LI and VI as significant prognostic factors and > 2 cm and LI-positive were independent factors by multivariate *** preoperatively evaluable factors excluding LVI,sm and > 2 cm were independent *** to the depth and size,cases were categorized into the low-risk group [m and ≤ 2 cm,0%(LNM incidence)],the moderaterisk group(m and > 2 cm,5.6%; and sm and ≤ 2 cm,6.0%),and the high-risk group(sm and > 2 cm,19.3%).On the other hand,LNM occurred in 1.4% in all LI-negative cases,greatly lower than 28.2% in all LI-positive cases,and LNM incidence was low in LInegative cases even in the moderate- and high-risk ***:LNM-related factors in undiff-EGC were depth and size preoperatively while those were LI and size *** these factors,LI was the most significantly correlated factor.

关键词： Undifferentiated-type early gastric cancer Lymph n

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利用热机械控制工艺开发优质丝棒材料

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上海钢研 2003年第3期 83-87页

作者： hideo hata Ph.D.Hiroshi Yaguchi Masataka Shimoysusa Masao Toyama 秦添艳日本

前言丝棒产品应用十分广泛,如制造汽车和家用电器的部件。它们在制成最终产品前要经过二次或三次加工。随着近年降低成本和全球环保意识的加强。

关键词：热机械控制工艺丝材棒材 TMCP 再结晶颗粒尺寸沉淀相变材料开发

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Superconductivity induced by field-driven proton injection

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Science Bulletin 2018年第1期63卷 5-6页

作者： hideo Hosono Materials Research Center for Element Strategy Tokyo Institute of Technology

Doping is a key operation to induce *** materials do not exhibit superconductivity in most cases of high Tcsystems but convert into superconductor when carriers are *** of impurity diminishes the long range ordering of spin,charge and/or orbitals,and superconductivity emerges in the neighbor of boundary between ordered and non-ordered *** parent phase of high-Tccuprate superconductors

关键词：超导性注射质子驱动超导体键操作绝缘体父母

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Robust camera pose estimation by viewpoint classification using deep learning

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Computational Visual Media 2017年第2期3卷 189-198页

作者： Yoshikatsu Nakajima hideo Saito Department of Science and Technology Keio UniversityJapan

Camera pose estimation with respect to target scenes is an important technology for superimposing virtual information in augmented reality(AR). However, it is difficult to estimate the camera pose for all possible view angles because feature descriptors such as SIFT are not completely invariant from every perspective. We propose a novel method of robust camera pose estimation using multiple feature descriptor databases generated for each partitioned viewpoint, in which the feature descriptor of each keypoint is almost invariant. Our method estimates the viewpoint class for each input image using deep learning based on a set of training images prepared for each viewpoint class. We give two ways to prepare these images for deep learning and generating databases. In the first method, images are generated using a projection matrix to ensure robust learning in a range of environments with changing *** second method uses real images to learn a given environment around a planar pattern. Our evaluation results confirm that our approach increases the number of correct matches and the accuracy of camera pose estimation compared to the conventional method.

关键词： pose estimation augmented reality(AR) deep learning convolutional neural network

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Urban climate in the Tokyo metropolitan area in Japan

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Journal of Environmental Sciences 2017年第9期29卷 54-62页

作者： Jun Matsumoto Fumiaki Fujibe hideo Takahashi Research Center for Climatology Department of Geography Tokyo Metropolitan University Department of Coupled Ocean-Atmosphere-Land Processes Research JAMSTEC

Long-term climate changes related with urbanization in Tokyo, Japan, and recent temperature and heavy rainfall distribution in the Tokyo metropolitan area are reviewed. A relatively high temperature increase in annual mean temperature at the rate of 3.0°C/century was detected in Tokyo for the period 1901–2015. Some observational evidence showed the existence of both thermal and mechanical effects of urbanization on recent heavy rainfall occurrences, and modeling studies also support precipitation enhancement. Urban influences were recognized in other climatological elements, such as number of fog days, relative humidity, and wind circulation.

关键词： Heat island Cool island Heavy rainfall Fog Humidity Sea breeze

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Removing fences from sweep motion videos using global 3D reconstruction and fence-aware light field rendering

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Computational Visual Media 2019年第1期5卷 21-32页

作者： Chanya Lueangwattana Shohei Mori hideo Saito Department of Science and Technology Keio University Institute of Computer Graphics and Vision Graz University of Technology

Diminishing the appearance of a fence in an image is a challenging research area due to the characteristics of fences(thinness, lack of texture, etc.) and the need for occluded background restoration. In this paper, we describe a fence removal method for an image sequence captured by a user making a sweep motion, in which occluded background is potentially observed. To make use of geometric and appearance information such as consecutive images, we use two well-known approaches: structure from motion and light field rendering. Results using real image sequences show that our method can stably segment fences and preserve background details for various fence and background combinations. A new video without the fence, with frame coherence, can be successfully provided.

关键词： video fence video repair diminished reality(DR) structure from motion(SfM) light field rendering(LFR)

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Effects of uniaxial compressive strain on the electronic- transport properties of zigzag carbon nanotubes

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Nano Research 2016年第5期9卷 1267-1275页

作者： Masato Ohnishi Ken Suzuki hideo Miura Fracture and Reliability Research Institute Graduate School of Engineering Tohoku University Sendai 980-8579 Japan

Recently, substantial attention has been paid to the strain sensitivity of the carbon nanotubes＇（CNTs＇） electronic properties. In this study, the relationships between the geometric structures and electronic states of zigzag CNTs under uniaxial compressive strain were investigated. We found that different factors dominate the electronic states of zigzag CNTs depending on the strain regions： the initial stage of the strain loading, which lasts until column-buckling deformation begins, and the strain regions corresponding to column- and shell-buckling deformations. Because shell-buckling deformation significantly increases the re-orbital angle, the angle between the π orbital axis vectors of adjacent atoms, strong localization of the density of states （LDOS） occurs in the buckled area. We also analyzed the current able to pass through deformed CNTs using a tight-binding-based Green＇s function approach and determined that the current can be significantly suppressed by applying uniaxial compressive strain. Our method of predicting the electronic state of a deformed CNT based on the π-orbital angle is expected to be useful for predicting the electronic properties of CNT-based electronic devices and sensors.

关键词： carbon nanotube strain buckling deformation Green's function method electronic-transport property

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PHOTOCHROMISM AND LUMINESCENCE OF DOPANT CHROMOPHORES THROUGH TWO-PHOTON IONIZATION IN POLYMER FILMS

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Chinese Journal of Polymer Science 2001年第2期19卷 129-134页

作者： Masahide Yamamoto hideo Ohkita Shinzaburo Ito Faculty of Science and Engineering Ritsumeikan University Kusatsu Shiga 525-8577 JapanDepartment of Polymer Chemistry Graduate School of Engineering Kyoto University Sakyo Kyoto 606-8501 JapanDepartment of Polymer Chemistry Graduate School of Engineering Kyoto University Sakyo Kyoto 606-8501 Japan

Two-photon ionization and recombination processes of an aromatic chromophore doped in polymer films werestudied and the features of these processes were discussed in relation to photofunctional polymers, An aromatic moleculehaving low ionization potential, e.g., N,N,N',N'-tetramethyl-p-phenylene diamine doped in poly(methyl methacrylate)(PMMA) film was easily photoionized by intense laser ligh excitation, giving a colored radical cation (photochromism) anda trapped electron in PMMA matrix. As a reversed process, the radical cation recombined with the trapped electron, showingdiscoloration and emitting luminescence, either isothermal luminescence (ITL), or thermoluminescence (TL). In this report,ITL and TL through the charge recombination process were studied and the luminescence was suggested as a mean of the read-out of photorecording.

关键词： Two-photon ionization Photochromism Charge recombination Trapped electron Isothermal luminescence Thermoluminescence Aromatic amines Poly(methyl methacrylate)

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Existence and Asymptotic Behavior of Radially Symmetric Solutions to a Semilinear Hyperbolic System in Odd Space Dimensions

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Chinese Annals of Mathematics,Series B 2006年第5期27卷 507-538页

作者： hideo KUBO Kji KUBOTA Department of Mathematics Osaka University Machikaneyama 1-1ToyonakaOsaka 560-0043Japan Department of Mathematics Hokkaido University Sapporo 060-0810Japan

This paper is concerned with a class of semilinear hyperbolic systems in odd space dimensions. Our main aim is to prove the existence of a small amplitude solution which is asymptotic to the free solution as t →-∞ in the energy norm, and to show it has a free profile as t →＋∞. Our approach is based on the work of [11]. Namely we use a weighted L^∞ norm to get suitable a priori estimates. This can be done by restricting our attention to radially symmetric solutions. Corresponding initial value problem is also considered in an analogous framework. Besides, we give an extended result of [14] for three space dimensional case in Section 5, which is prepared independently of the other parts of the paper.

关键词： Semilinear wave equations Asymptotic behavior Radially symmetric solution

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Characteristic and Mechanism of Pressure Fluctuation Caused by Self-Induced Oscillation of Supersonic Impinging Jet

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Journal of Thermal Science 2013年第2期22卷 123-127页

作者： Tsuyoshi Yasunobu Yumiko Otobe hideo Kashimura Department of Control & Information Systems Engineering Kitakyushu College of Technology

When the underexpanded supersonic jet impinges on the obstacle, it is well known that the self-induced flow os- cillation occurs. This oscillation depends on the pressure ratio in the flowfield, the position of an obstacle and is related with the noise problems of aeronautical and other industrial engineering. The characteristic and the mechanism of self-induced flow oscillation, have to be clarified to control various noise problems. But, it seems that the characteristics of the oscillated flowfield and the mechanism of an oscillation have to be more cleared to control the oscillation. This paper aims to clarify the effect of the pressure ratio and the obstacle position and the mechanism of self-induced flow oscillation by numerical analysis and experiment, when the underexpanded su- personic jet impinges on the cylindrical body. From the result of this study, it is clear that occurrence of the self-induced flow osciUation depends on the pressure balance in the flowfield.

关键词： Supersonic Jet Mach Disk Barrel Shock Flow Oscillation Flow Visualization Numerical Analysis

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