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系统仿真学报 2023年第8期35卷 1635-1650页

作者： tanaka satoshi College of Information Science and Engineering Ritsumeikan UniversityShiga 525-8577Japan

Three-dimensional(3D) scanning technology has undergone remarkable developments in recent *** acquired by 3D scanning have the form of 3D point *** 3D scanned point clouds have data sizes that can be considered big *** also contain measurement noise inherent in measurement *** properties of 3D scanned point clouds make many traditional CG/visualization techniques *** paper reviewed our recent achievements in developing varieties of high-quality visualizations suitable for the visual analysis of 3D scanned point *** demonstrated the effectiveness of the method by applying the visualizations to various cultural heritage *** main visualization targets used in this paper are the floats in the Gion Festival in Kyoto(the float parade is on the UNESCO Intangible Cultural Heritage List) and Borobudur Temple in Indonesia(a UNESCO World Heritage Site).

关键词： 3D scanning point cloud transparent visualization noise transparentization cultural heritage object

PARTICLE-BASED TRANSPARENT FUSED VISUALIZATION APPLIED TO MEDICAL VOLUME DATA

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International Journal of Modeling, Simulation, and Scientific Computing 2013年第S1期4卷 104-114页

作者： KYOKO HASEGAWA SAORI OJIMA YOSHIYUKI SHIMOKUBO SUSUMU NAKATA KOZABURO HACHIMURA satoshi tanaka College of Information Science and Engineering Ritsumeikan University Noji Higashi 1-1-1 KusatsuShiga525-8577Japan Graduate School of Science and Engineering Ritsumeikan University Noji Higashi 1-1-1 KusatsuShiga525-8577Japan

This paper proposes a method to create 3D fusion images,such as volume–volume,volume–surface,and surface–surface *** method is based on the particle-based rendering,which uses tiny particles as rendering *** method can create natural and comprehensible 3D fusion images simply by merging particles prepared for each element to be ***,the method does not require particle sorting along the line of sight to realize right depth *** apply our method to realize comprehensible visualization of medical volume data.

关键词： Particle-based rendering fused visualization stochastic particle generation.

Quantitative evaluation of perceived depth of transparently-visualized medical 3D data presented with a multi-view 3D display

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第3期9卷 115-130页

作者： Yuichi Sakano Yurina Kitaura Kyoko Hasegawa Roberto Lopez-Gulliver Liang Li Hiroshi Ando satoshi tanaka Center for Information and Neural Networks(CiNet)National Institute of Information and Communications Technology and Osaka University 2B6CiNet1-4 Yamadaoka SuitaOsaka 565-0871Japan Graduate School of Frontier Biosciences Osaka University 1-4 YamadaokaSuitaOsaka565-0871Japan Graduate School of Information Science and Engineering Ritsumeikan University 1-1-1 Noji-higashi KusatsuShiga 525-8577Japan College of Information Science and Engineering Ritsumeikan University 1-1-1 Noji-higashi KusatsuShiga 525-8577Japan

Transparent visualization is used in many fields because it can visualize not only the frontal object but also other important objects behind *** in many situations,it would be very important for the 3D structures of the visualized transparent images to be perceived as they are simulated,little is known quantitatively as to how such transparent 3D structures are *** address this question,in the present study,we conducted a psychophysical experiment in which the observers reported the perceived depth magnitude of a transparent object in medical images,presented with a multiview 3D *** the visualization,we employed a stochastic point-based rendering(SPBR)method,which was developed recently as a technique for efficient *** depth of the transparent object was smaller than the simulated *** found,however,that such depth underestimation can be alleviated to some extent by(1)applying luminance gradient inherent in the SPBR method,(2)employing high opacities,and(3)introducing binocular disparity and motion parallax produced by a multi-view 3D display.

关键词： Transparent visualization automultiscopic 3D image psychophysics.

Introduction to the special issue on virtual reality and visualization for modeling and simulation

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第3期9卷 1-1页

作者： satoshi tanaka Hideo Miyachi 不详

Since last year,we have been experiencing the second boom of Virtual *** the first boom during the 1990’s,applications of Virtual Reality to the research field of modeling and simulation were limited because of the cost and complexity in use of the Virtual Reality ***,in the current boom,the situation is very ***,we have sophisticated but cheap and user-friendly Virtual Reality tools and environments such as head-mounted display,personal-size naked-eye stereographic displays,high-quality remote visualization systems,and *** can also utilize personalized ICT devices such as laptop PCs,tablets,and smart *** the other hand,it should also be remarked that the recent cutting-edge technologies can provide us with highly real virtual worlds based on ultra-high-resolution images,ultra-large displays,haptics and auditory devices,*** of the well-established network environments further increases possible application of Virtual Reality.

关键词： environments utilize mounted

Synthesis and Characterization of CaPd<sub>3</sub>O<sub>4</sub>Crystals

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Journal of Crystallization Process and Technology 2012年第1期2卷 16-20页

作者： Hiroaki Samata satoshi tanaka Soichiro Mizusaki Yujiro Nagata Tadashi C. Ozawa Akira Sato Kosuke Kosuda 不详

A new method for the crystal growth of alkaline-earth palladate CaPd3O4 was developed. The crystals were synthesized on a voltage-applied electrode in a molten chloride solvent. The maximum length of the crystal was about 1.5 mm. The X-ray diffraction data were refined well by assuming a cubic structure of the space group Pm n, and the lattice constant a was 5.7471 (10) ?. The temperature dependence of the resistivity showed semiconductor-like characteristics with a very small activation energy Ea of 0.45 meV at low temperatures, and the resistivity at 300 K was 0.1 cm. The temperature dependence of the molar magnetic susceptibility showed the Curie-Weiss paramagnetic behavior with a small molar Curie constant Cmol of 5.0(1) × 10-3 emu K/(mol Oe), indicating the existence of localized spin moments.

关键词： Single Crystal Electrochemical Technique CaPd3O4

Serum Chlorine Level as a Possible Predictive Factor for Oxaliplatin-Induced Peripheral Neuropathy

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Pharmacology & Pharmacy 2012年第1期3卷 44-51页

作者： satoshi tanaka Naoto Suzuki Akira Mimura Kaho Kurosawa Yuriko Murai Daisuke Saigusa Makio Gamoh Masuo Sato Yoshihisa Tomioka 不详

Peripheral neuropathy is a major adverse event associated with oxaliplatin-based chemotherapy and is a major dose-limiting adverse event in clinical practice. However, some patients treated with oxaliplatin may show no or minimal peripheral neuropathy. These differences are still poorly understood. The data on patients with colorectal cancer who received oxaliplatin-based regimens between January 2005 and June 2010 at South Miyagi Medical Center were retrospectively retrieved from the medical records. We selected 51 patients, and factor analysis was performed. The serum chlorine (Cl) level at baseline was significantly higher in patients with a high frequency of peripheral neuropathy (106;range 104 - 107 vs. 104;range 101 - 104 mEq/L, p = 0.02). Principal component analysis showed the variables Cl, body mass index, status of liver metastasis, and status of lymph node metastasis were related to the incidence of peripheral neuropathy. Discriminant analysis showed the model had predicted 72.5% of peripheral neuropathy. An understanding of the patient’s characteristics could be useful for preventing or predicting oxaliplatin-induced peripheral neuropathy.

关键词： Peripheral Neuropathy Oxaliplatin Chlorine Predicting Factors Predictive Model

Hayabusa2’s station-keeping operation in the proximity of the asteroid Ryugu

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Astrodynamics 2020年第4期4卷 349-375页

作者： Yuto Takei Takanao Saiki Yukio Yamamoto Yuya Mimasu Hiroshi Takeuchi Hitoshi Ikeda Naoko Ogawa Fuyuto Terui Go Ono Kent Yoshikawa Tadateru Takahashi Hirotaka Sawada Chikako Hirose Shota Kikuchi Atsushi Fuji Takahiro Iwata Satoru Nakazawa Masahiko Hayakawa Ryudo Tsukizaki satoshi tanaka Masanori Matsushita Osamu Mori Daiki Koda Takanobu Shimada Masanobu Ozaki Masanao Abe satoshi Hosoda Tatsuaki Okada Hajime Yano Takaaki Kato Seiji Yasuda Kota Matsushima Tetsuya Masuda Makoto Yoshikawa Yuichi Tsuda Japan Aerospace Exploration Agency Sagarmihara 252-5210Japan The Graduate University for Advanced Studies Sagarmihara 252-5210Japan NEC Aerospace Systems LtdFruchu 183-8502Japan NEC Corporation Puchu 183-8501Japan

The Japanese interplanetary probe Hayabusa2 was launched on December 3,2014 and the probe arrived at the vicinity of asteroid 162173 Ryugu on June 27,*** its 1.4 years of asteroid proximity phase,the probe successfully accomplished numbers of record-breaking achievements including two touchdowns and one artificial cratering experiment,which are highly expected to have secured surface and subsurface samples from the asteroid inside its sample container for the first time in *** Hayabusa2 spacecraft was designed not to orbit but to hover above the asteroid along the sub Earth *** orbital and geometrical configuration allows the spacecraft to utilize its high-gain antennas for telecommunication with the ground station on Earth while pointing its scientific observation and navigation sensors at the *** paper focuses on the regular station-keeping operation of Hayabusa2,which is called“home position”(HP)-keeping ***,together with the spacecraft design,an operation scheme called HP navigation(HPNAV),which includes a daily trajectory control and scientific observations as regular activities,is *** the description on the guidance,navigation,and control design as well as the framework of optical and radiometric navigation,the results of the HP-keeping operation including trajectory estimation and delta-V planning during the entire asteroid proximity phase are summarized and evaluated as a first ***,this paper states that the *** operation in the framework of HPNAV had succeeded without critical incidents,and the number of trajectory control delta-V was planned fficiently throughout the period.

关键词： small body mission station-keeping guidance,navigation,and control(GNC) optical and radiometric navigation

Metastatic Carcinoma of the Uterine Cervix from Rectal Carcinoma: A Case Report and Review of the Literature

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Open Journal of Obstetrics and Gynecology 2014年第10期4卷 617-620页

作者： Motoki Matsuura Masato Tamate Masahiro Suzuki Tasuku Mariya Sakura Takada Yuta Tabuchi Mizue Teramoto Seiro Satohisa Ryoichi tanaka Masahiro Iwasaki Kaori Fukunaka Noriyoshi Fukunaka satoshi tanaka Tsuyoshi Saito Department of Obstetrics and Gynecology Hakodate Goryoukaku Hospital Hakodate Japan Department of Obstetrics and Gynecology Sapporo Medical University Sapporo Japan

Primary adenocarcinomas of the uterine cervix account for 5% - 15% of all cervical malignancies, but secondary adenocarcinomas from extragenital cancers are rare. Only 35 cases have been reported in the literature since 1941. We report a 52-year-old Japanese woman who had been treated for rectal adenocarcinoma (Dukes C, stage IIIb) and who was diagnosed with primary uterine cervical carcinoma (FIGO stage Ib2) two years later. A radical hysterectomy was performed and the surgical specimen showed metastatic adenocarcinoma of the uterine cervix from rectal cancer without direct extension. Immunohistochemical staining was positive for cytokeratin 20 and CDX2, and negative for cytokeratin 7. Immunohistochemical staining is important for distinguishing between primary and secondary adenocarcinomas of the cervix, but histologic findings alone are not always adequate to establish the site of the primary lesion. The distinction between primary and secondary adenocarcinomas of the cervix is important for patient management and prognosis. Therefore, the possibility of metastatic adenocarcinoma should be considered whenever a diagnosis of adenocarcinoma of the cervix is received.

关键词： Metastatic Adenocarcinoma Cervical Cancer Colorectal Carcinoma

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地铁站内烟气流动特性和消防安全(英文)

消防科学与技术 2006年第3期25卷 324-333页

作者： SHUJI MORIYAMA YUJI HASEMI DON-GUN NAM satoshi tanaka NAOMI OKAZAWA Department of Architecture Waseda University Tokyo 169-8555Japan Department of Architecture Waseda University Tokyo 69-8555Japan

介绍了地铁站内烟气流动和控制的试验和数值研究。在三个真正地铁站内利用甲醇油池火作为燃料进行了试验,用所获得数据来验证地铁站火灾数值模型,并进一步检验其烟控系统的性能。在站内使用了制量烟气流动模型,再现了最简单条件下每个... 详细信息

介绍了地铁站内烟气流动和控制的试验和数值研究。在三个真正地铁站内利用甲醇油池火作为燃料进行了试验,用所获得数据来验证地铁站火灾数值模型,并进一步检验其烟控系统的性能。在站内使用了制量烟气流动模型,再现了最简单条件下每个站点的试验结果,然后把结果跟其他试验条件下的试验结果进行了比较。最后,用模型预测更复杂火灾的烟气流动情况。另外,还讨论了地铁系统的有效设计和火灾安全设施的正常运作情况。通过限制内饰面材料的燃烧性能或者安装自动喷淋系统都可以有效控制热释放速率,且在站点两端开设逃生路线、站台和地铁隧道直接卷帘的正常启动等可有效保证安全疏散。

关键词：烟气流动地铁站试验和数值研究安全疏散

Motion reconstruction of the small carry-on impactor aboard Hayabusa2

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Astrodynamics 2020年第4期4卷 289-308页

作者： Takanao Saiki Yuya Mimasu Yuto Takei Manabu Yamada Hirotaka Sawada K azunori Ogawa Naoko Ogawa Hiroshi Takeuchi Akira Miura Yuri Shimaki Koji Wada Rie Honda Yasuhiro Yokota Kei Shirai Naruhisa Sano Hirohito Ohtsuka Go Ono Kent Yoshikawa Shota Kikuchi Chikako Hirose Yukio Yamamoto Takahiro Iwata Masahiko Arakawa Seiji Sugita satoshi tanaka Fuyuto Terui Makoto Yoshikawa Satoru Nakazawa Sei-ichiro Watanabe Yuichi Tsuda Japan Aerospace Exploration Agency Sagamihara 252-5210Japan Chiba Institute of Technology Narashino 275-0016Japan Kobe University K obe 657-8501Japan The Graduate University for Aduanced Studies Sagamihara 252-5210Japan Kochi University Kochi 780-8520Japan IHI Aerospace Co. LtdTomioka 370-2398Japan The University of Tokyo Tokyo 113-0033Japan Nagoya University Nagoya 464-8601Japan

Subsurface exploration is one of the most ambitious scientific objectives of the Hayabusa2 mission.A small device called small carry-on impactor(SCI)was developed to create an artificial crater on the surface of asteroid *** enables us to sample subsurface materials,which will provide a window to the *** physical properties of the resulting crater are also useful for understanding the internal structure of *** understanding of the crater and ejecta properties,including the depth of excavation of subsurface materials,requires accurate information on impact *** particular,the impact angle is a critical factor because it greatly influences the size and shape of the *** April 5,2019,the Hayabusa2 spacecraft deployed the SCI at 500 m of altitude above the asteroid *** SCI gradually reduced its altitude,and it shot a 2 kg copper projectile into the asteroid 40 min after *** the position of the released SCI is essential for determining the impact *** study describes the motion reconstruction of the SCI based on the actual operation *** results indicate that the SCI was released with high accuracy.

关键词： small body exploration Hayabusa2 kinetic impact artificial crater motion reconstruction