检索结果-南通市图书馆

Painting image browser applying an associate-rule-aware multidimensional data visualization technique

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Visual Computing for Industry,Biomedicine,and Art 2020年第1期3卷 18-30页

作者： Ayaka Kaneko Akiko Komatsu takayuki itoh Florence Ying Wang Ochanomizu University 2-1-1 OtsukaBunkyo-ku1128610 TokyoJapan CSIRO Julius Ave.2113 North RydeNSWAustralia

Exploration of artworks is enjoyable but often time *** example,it is not always easy to discover the favorite types of unknown painting *** is not also always easy to explore unpopular painting works which looks similar to painting works created by famous *** paper presents a painting image browser which assists the explorative discovery of user-interested painting *** presented browser applies a new multidimensional data visualization technique that highlights particular ranges of particular numeric values based on association rules to suggest cues to find favorite painting *** study assumes a large number of painting images are provided where categorical information(e.g.,names of artists,created year)is assigned to the *** presented system firstly calculates the feature values of the images as a preprocessing *** the browser visualizes the multidimensional feature values as a heatmap and highlights association rules discovered from the relationships between the feature values and categorical *** mechanism enables users to explore favorite painting images or painting images that look similar to famous painting *** case study and user evaluation demonstrates the effectiveness of the presented image browser.

关键词： Painting image Multi-dimensional data visualization Association rule

Streamline pair selection for comparative flow field visualization

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Visual Computing for Industry,Biomedicine,and Art 2020年第1期3卷 215-226页

作者： Shoko Sawada takayuki itoh Takashi Misaka Shigeru Obayashi Tobias Czauderna Kingsley Stephens Ochanomizu University 2-1-1 OtsukaBunkyo-kuTokyo 1128610Japan Tohoku University 2-1-1 KatahiraAoba-kuSendaiMiyagi 9808577Japan Monash University Wellington RoadClaytonVictoriaAustralia

Fluid dynamics simulation is often repeated under varying *** leads to a generation of large amounts of results,which are difficult to *** compare results under different conditions,it is effective to overlap the streamlines generated from each condition in a single three-dimensional *** is a curved line,which represents a wind *** paper presents a technique to automatically select and visualize important streamlines that are suitable for the comparison of the simulation ***,we present an implementation to observe the flow fields in virtual reality spaces.

关键词： Computational fluid dynamics Streamline selection Comparative flow field visualization Virtual reality

Reactive lymphoid hyperplasia of the liver:A case report and review of literature

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World Journal of Gastroenterology 2007年第40期13卷 5403-5407页

作者： Takuro Machida Toshiyuki Takahashi Tomoo itoh Michiaki Hirayama takayuki Morita Shoichi Horita Department of Internal Medicine Hokkaido Gastroenterology HospitalSapporoHokkaido 065-0041Japan Department of Pathology Hokkaido Gastroenterology HospitalSapporoHokkaido 065-0041Japan Department of Pathology Hokkaido University HospitalSapporoHokkaido060-8648Japan Department of Surgery Hokkaido Gastroenterology HospitalSapporoHokkaido 065-0041Japan

A case of a 53-year-old female patient with reactive lymphoid hyperplasia （RLH）, clinically designated as pseudolymphoma of the liver is described in this article. The patient was admitted to our hospital for further evaluation of hepatic tumors incidentally discovered at another hospital. Various diagnostic methods, including ultrasonography （US）, computerized tomography （CT）, magnetic resonance imaging （MRI） and hepatic angiography displayed three small lesions in the liver with outstanding findings consistent with hepatocellular carcinoma （HCC）. Surgical resection was performed and the three lesions were microscopically diagnosed as RLH of the liver. The lesions comprised a massive infiltration of lymphoid cells with follicles and hyalinized inter- follicular spaces. Immunohistochemical examination revealed that infiltrating lymphocytes had no prominent nuclear atypia and polyclonality. RLH of the liver is a very rare condition and only twelve cases have been reported in the English literature. Majority of the reported cases were middle-aged women and about half of them had some immunologic abnormalities such as autoimmune thyroiditis, Sjogren＇s syndrome, primary immunodeficiency, primary biliary cirrhosis. Since they are olden clinically misdiagnosed as HCC, surgery is the choice of treatment for these patients. Although their pathology resembles malignant lymphoma, the clinical course is completely benign. The authors propose that RLH of the liver can be discriminated from HCC by its clinical features.

关键词： Reactive lymphoid hyperplasia Pseudo lymphoma Hepatocellular carcinoma Autoimmunethyroiditis Immunohistochemistry

Response of plasma turbulence against externally-controlled perturbations

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Chinese Physics B 2012年第9期21卷 385-395页

作者： S. I. itoh K. itoh Research Institute for Applied Mechanics Kyushu University itoh Research Center for Plasma Turbulence Kyushu University National Institute for Fusion Science

A theory of the dynamic response of the turbulent plasma against the externally-controlled perturbations is reported. Based on Mori＇s method [Prog. Theor. Phys. 33 423 （1965）], the nonlinear force is assmned to be separated into the memory function and the nonlinear fluctuating force. The former corresponds to the damping term, and the latter is categorized into the noise term. The response of the turbulent plasma against the externally-controlled source is formulated. The response kernel, which connects the externally-controlled source and the response of the turbulent field, is shown to have both the nonlocal property （in space） and the non-Markovian response （in time）. A discussion is made on the nonlocal and non-Markovian response, including the case of disparate-scale interactions. A new method is proposed to observe experimentally the nonlocal interaction in the drift wave turbulence via the zonal flows.

关键词： turbulent transport nonlocal and non-Markovian response

Measurements of the Ca II infrared triplet lines of young stellar objects

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Research in Astronomy and Astrophysics 2013年第10期13卷 1189-1201页

作者： Yoichi itoh Keiko Moto'oka Yoichi itoh The Saga Prefecture Space & Science Museum 16351 Nagashima Takeo Takeo Saga 843-0021 Japan Nishi-Harima Astronomical Observatory Center for Astronomy University of Hyogo 407-2 Nishigaichi Sayo Hyogo 679-5313 Japan yitoh @nhao.jp

Equivalent widths and line widths of Ca II infrared triplet emission lines were measured in the high-resolution optical spectra of 39 young stellar *** found that the equivalent widths of the emission lines decrease with stellar *** has often been claimed that strong chromospheric activity is generated by a dynamo process caused by fast rotation of the ***,we found no clear correlation between the strength of the Ca II lines and the stellar rotation ***,we found that the objects with high mass accretion rates had stronger Ca II emission *** correlation supports the turbulent chromosphere model or the magnetic accretion theory for classical T Tauri *** also noticed that the equivalent widths of Ca II lines in transitional disk objects are one-tenth of those in classical T Tauri stars,even if the masses of the circumstellar disks are comparable.

关键词： stars:pre-main sequence stars:emission lines

A high quality surface finish grinding process to produce total reflection mirror for x-ray fluorescence analysis

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International Journal of Extreme Manufacturing 2020年第1期2卷 156-162页

作者： Hitoshi Ohmori Shinjiro Umezu Yunji Kim Yoshihiro Uehara Hiroshi Kasuga Teruko Kato Nobuhide itoh Syuhei Kurokawa takayuki Kusumi Yugo Sugawara Shinsuke Kunimura Materials Fabrication Laboratory RIKENSaitama 351-0198Japan Department of Modern Mechanical Engineering Waseda UniversityTokyo 169-8555Japan Department of Mechanical Systems Engineering Ibaraki UniversityIbaraki 316-8511Japan Department of Mechanical Engineering Kyushu UniversityFukuoka 819-0395Japan New technology developments Akita Industrial Technology CentreAkita 010-1623Japan Department of Industrial Chemistry Tokyo University of ScienceTokyo 162-8601Japan

Total reflection x-ray fluorescence analysis is applied to trace element detection in liquid for effective environmental *** analytical approach requires x-ray total reflection *** order to achieve high sensitivity element detection,the mirrors require high surface quality for high x-ray *** finishing for x-ray mirrors is typically conducted through a series of abrasive processes,such as grinding and polishing,and is thus time *** purpose of this study is to streamline and enhance the surface finishing process based on unique high quality grinding techniques for the production of x-ray total reflection mirrors.

关键词： grinding finishing x-ray mirror

Heavy Ion Beam Probe Measurement in Turbulence Diagnostic Simulator

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Plasma Science and Technology 2011年第3期13卷 326-331页

作者： Naohiro KASUYA Seiya NISHIMURA Masatoshi YAGI Kimitaka itoh Sanae-I itoh National Institute for Fusion Science 322-60roshi-cho Toki Gifu 509-5292 Japan Research Institute for Applied Mechanics Kyushu University 6-1 Kasuga-kouen KasugaFukuoka 816-8580 Japan Japan Atomic Energy Agency 801-1 Mukoyama Naka Ibaraki 311-0193 Japan

A numerical measurement module simulating a heavy ion beam probe was developed, and numerical measurements of electrostatic potential and density fluctuations are carried out for 3-D turbulent data generated by a global simulation of drift-interchange mode turbulence in helical plasmas. The deviation between measured and local values is estimated. It is found that the characteristic structures can be detected in spite of the screening effect due to the finite spatial resolution.

关键词： turbulence structural formation numerical simulation heavy ion beamprobe fluctuation spatial resolution

12.5 GHz Channel Spacing Compact Interleave Filter Using 1.5%-△ Waveguides

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光学学报 2003年第S1期23卷 195-196页

作者： takayuki Mizuno Tsutomu Kitoh Manabu Oguma Masaki Kohtoku Yasuyuki Inoue Mikitaka itoh Yoshinori Hibino NTT Photonics Laboratories NTT Corporation 3-1 Wakamiya Morinosato Atsugi Kanagawa 243-0198 Japan

We report the first fabrication of a compact lattice-form interleave filter with a channel spacing of 12.5 GHz. The circuit size was reduced to 1/4 the size of the original filter by using the 1.5 %-△ waveguides. We ... 详细信息

关键词： channel spacing insertion loss

Fatigue Property of Additively Manufactured Ti-6Al-4V under Nonproportional Multiaxial Loading

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Chinese Journal of Mechanical Engineering 2021年第6期34卷 76-84页

作者： Yuya Kimura Fumio Ogawa Takamoto itoh Graduate School of Science&Engineering Ritsumeikan UniversityShiga 5258577Japan Fracture and Reliability Research Institute Graduate School of Tohoku UniversityMiyagi 9808579Japan Department of Mechani-cal Engineering Ritsumeikan UniversityShiga 5258577Japan

The low cycle fatigue strength properties of the additively manufactured Ti-6Al-4V alloy are experimentally investi-gated under proportional and nonproportional multiaxial *** fatigue tests were conducted using hollow cylinder specimens with and without heat treatments,at room temperature in *** fatigue tests were conducted:one for proportional loading and one for nonproportional *** proportional loading was represented by a push-pull strain path(PP)and the nonproportional loading by a circle strain path(Cl).The failure lives of the additively manufactured specimens were clearly reduced drastically by internal voids and ***,the sizes of the defects were measured,and the defects were found not to cause a reduction in fatigue strength above a critical *** fracture surface was observed using scanning electron microscopy to investigate the fracture mechanisms of the additively manufactured specimens under the two types of strain *** fracture patterns were recognized for each strain paths;however,both showed retention of the crack propagation,despite the presence of numerous defects,probably because of the interaction of the *** crack propagation properties of the materials with numerous defects under nonproportional multiaxial loading were clarified to increase the reliability of the additively manufactured components.

关键词： Additive manufacturing Ti-6Al-4V Low cycle fatigue Multiaxial stress Nonproportional loading Internal defect