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中国病理生理杂志 2012年第11期 2090-2090页

作者： Vanessa DEHENNAUT yasumasa iwasaki Dominique LEPRINCE CNRS UMR 8161 Institut de Biologie de LilleCNRS-Université de LilleLilleFrance Health Care Center Kochi UniversityKochiJapan

AIM:Epithelial-mesenchymal transition(EMT),characterized by loss of epithelial markers(E-cadherin)and possession of mesenchymal markers(vimentin),plays a pivotal role in early embryonic development and when aberrantly... 详细信息

关键词： SIRT A SUMOylation-dependent pathway regulates SIRT1 transcription and cancer metastasis EMT

Airway Scope、Airtraq、Macintosh喉镜用于困难气道的气管插管：一项关于无操作经验人员在人体模型上操作的对照研究

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麻醉与镇痛 2012年第4期8卷 46-54页

作者： Liangji Liu Koichi Tanigawa Shinji Kusunoki Tomoko Tamura Kohei Ota Satoshi Yamaga Yoshiko Kida Tadatsugu Otani Takuma Sadamori Taku Takeda yasumasa iwasaki Nobuyuki Hirohashi 毛祖旻(译) 李士通(校) Department of Emergency and Critical Care Medicine Hiroshima University Hiroshima Japan 不详

背景AirwayScope（AWS）和Airtraq（ATQ）喉镜的镜片结构相似，在本次研究中，我们评估了无操作经验的人员在模拟人困难气道模型上分别应用AWS、ATQ和Macintoshlamgoscope（ML）喉镜所完成气管插管的难易性。方法24名无气管插管经验的5... 详细信息

背景AirwayScope（AWS）和Airtraq（ATQ）喉镜的镜片结构相似，在本次研究中，我们评估了无操作经验的人员在模拟人困难气道模型上分别应用AWS、ATQ和Macintoshlamgoscope（ML）喉镜所完成气管插管的难易性。方法24名无气管插管经验的5年级医学生参加了此项研究，采用人体模型（SimMan）来模拟各种不同的困难气道，包括颈椎强直、张口受限、咽部阻塞3种场景。气管插管装置及困难气道类型的顺序是随机的。我们分析了气管插管的成功率，声门暴露、气管插管、张肺所需的时间，调整手法使用次数和摩擦牙齿的喀声次数。24名学生用3种不同的插管装置在4种不同的气道条件下进行操作。结果与ML组相比，AWS组、ATQ组均有较高的气管插管成功率（AWS组为100％，ATQ组为98％，ML组为89％，AWS组、ATQ组与ML组相比P〈0．05），AWS组所需的插管时间显著少于ATQ组和ML组（AWS组为11±6秒，ATQ组为16±12秒，ML组为16±11秒），与ATQ组和ML组相比，AWS组需要优化调整的次数显著减少（P〈0．05），ML组插管过程中可闻及的牙齿喀声比AWS组和ATQ组显著增多。结论对于在模拟困难气道下进行气管插管的无插管经验的人员，AWS和ATQ可能是更适合的插管装置，有必要在今后的临床实践中进一步证实此项发现。

关键词： Macintosh喉镜气管插管困难气道操作经验人体模型插管成功率插管装置 AWS

Quality assessment of volunteered geographic information for outdoor activities:an analysis of OpenStreetMap data for names of peaks in Japan

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Geo-Spatial Information Science 2023年第3期26卷 333-345页

作者： Jun Yamashita Toshikazu Seto Nobusuke iwasaki Yuichiro Nishimura Faculty of Social and Cultural Studies Kyushu UniversityFukuokaJapan Faculty of Letters Komazawa UniversityTokyoJapan Sciences NAROInstitute for Agro-EnvironmentalTsukubaJapan Faculty of Letters Nara Women’s UniversityNaraJapan

Geographical studies of outdoor activities have increased in recent years with the rise in popularity of these activities worldwide,including in *** geographic information(VGI)is a key tool for organizing outdoor activities as it offers a means to determine the locational information and names of *** evaluate the quality of VGI,geospatial data generated by land survey agencies and other VGI are often utilized as reference ***,since these reference data may not be available,other methods are necessary to assure the quality of *** this study,we examined five trust indicators based on the inherent characteristics of VGI through an empirical case *** used mountain names extracted from OpenStreetMap in Japan as data because there were almost no other VGI in the *** a result,we isolated three trust indicators,namely versions,users,and tag corrections,to examine the thematic accuracy of VGI because these were the only statistically significant ***,we found that the prediction rate of thematic accuracy was very *** improve thematic accuracy,this study recommends using the most accurate versions,applying correctly given tags,and considering the motivations and characteristics of the VGI contributors.

关键词： Outdoor activities volunteered geographic information(VGI) OpenStreetMap(OSM) data quality assessment trust integrated usage

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World Journal of Clinical Cases 2022年第34期10卷 12617-12622页

作者： Mayuki Kizawa Yasushi iwasaki Department of Pathology Tokai Central HospitalKakamigahara 504-8601Japan Bulletin of The Institute for Medical Science of Aging Aichi Medical UniversityNagakute City 480-1195Japan

BACKGROUND Although coronavirus disease 2019(COVID-19)vaccines have been effective in controlling the COVID-19 pandemic,a variety of post-vaccination neurological complications have been reported ***β-related angiitis(ABRA)is a rare neurological *** underlying cause of ABRA is unknown,but several studies suggest that it is caused by an excessive immune response to amyloid-βdeposited in blood *** addition,limited attention has been paid to potential triggers of ABRA,such as infection or *** SUMMARY We report a case of ABRA that developed 2 wk after COVID-19 vaccination.A 75-year-old woman developed a frontal headache after receiving a second dose of COVID-19 BNT162b2 vaccine(Pfizer-BioNTech).Diffusion-weighted magnetic resonance imaging(DW-MRI)of the head showed abnormal hyperintensity,suggesting cerebral infarctions in the left parietal and occipital *** diagnosed her condition as ABRA based on a brain *** administered steroid pulse therapy and the patient’s symptoms and DW-MRI abnormalities *** case had a good outcome due to prompt diagnosis and *** We report a case of ABRA that may have been triggered by COVID-19 vaccination.

关键词： Amyloidβ-related angiitis COVID-19 Neurological complications Vaccination Case report

Temporal and spatial anti-aliasing for rendering reflections on water waves

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Computational Visual Media 2021年第2期7卷 201-215页

作者： Namo Podee Nelson Max Kei iwasaki Yoshinori Dobashi Hokkaido University Sapporo060-0814Japan University of California Davis95616USA Wakayama University Wakayama640-8441Japan

The reflection of a bright light source on a dynamic surface such as water with waves can be difficult to render well in real time due to reflection aliasing and *** this paper,we propose a solution to this problem by approximating the reflection direction distribution for the water surface as an elliptical Gaussian *** we analytically integrate the reflection contribution throughout the rendering interval *** method can render in real time an animation of the time integrated reflection of a spherical light source on highly dynamic waves with reduced aliasing and flickering.

关键词： real-time rendering anti-aliasing reflection water surface water waves elliptical Gaussian

A method for estimating the errors in many-light rendering with supersampling

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Computational Visual Media 2019年第2期5卷 151-160页

作者： Hirokazu Sakai Kosuke Nabata Shinya Yasuaki Kei iwasaki Wakayama University WakayamaWakayama640-8510Japan Dwango CG Research KADOKAWA Hongo Bldg.5245 HongoBunkyo-kuTokyo1130033Japan

In many-light rendering, a variety of visual and illumination effects, including anti-aliasing,depth of field, volumetric scattering, and subsurface scattering, are combined to create a number of virtual point lights(VPLs). This is done in order to simplify computation of the resulting illumination. Naive approaches that sum the direct illumination from many VPLs are computationally expensive;scalable methods can be computed more efficiently by clustering VPLs, and then estimating their sum by sampling a small number of VPLs. Although significant speed-up has been achieved using scalable methods, clustering leads to uncontrollable errors, resulting in noise in the rendered images. In this paper, we propose a method to improve the estimation accuracy of manylight rendering involving such visual and illumination effects. We demonstrate that our method can improve the estimation accuracy by a factor of 2.3 over the previous method.

关键词： anti-aliasing depth of field many-light rendering participating media

Comparison of dissimilarity measures for cluster analysis of X-ray diffraction data from combinatorial libraries

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npj Computational Materials 2017年第1期3卷 448-456页

作者： Yuma iwasaki A.Gilad Kusne Ichiro Takeuchi IoT Devices Research Laboratories NEC CorporationTsukuba 305-8501Japan Spin Quantum Rectification Project ERATOJapan Science and Technology AgencySendai 980-8577Japan National Institute of Standards and Technology GaithersburgMD 20899USA Department of Materials Science and Engineering University of MarylandCollege parkMD 20742USA

Machine learning techniques have proven invaluable to manage the ever growing volume of materials research data produced as developments continue in high-throughput materials simulation,fabrication,and *** particular,machine learning techniques have been demonstrated for their utility in rapidly and automatically identifying potential composition-phase maps from structural data characterization of composition spread libraries,enabling rapid materials fabrication-structure-property analysis and functional materials discovery.A key issue in development of an automated phase-diagram determination method is the choice of dissimilarity measure,or kernel *** desired measure reduces the impact of confounding structural data issues on analysis *** issues include peak height changes and peak shifting due to lattice constant change as a function of *** this work,we investigate the choice of dissimilarity measure in X-ray diffraction-based structure analysis and the choice of measure’s performance impact on automatic composition-phase map *** dissimilarity measures are investigated for their impact in analyzing X-ray diffraction patterns for a Fe-Co-Ni ternary alloy composition *** cosine,Pearson correlation coefficient,and Jensen-Shannon divergence measures are shown to provide the best performance in the presence of peak height change and peak shifting(due to lattice constant change)when the magnitude of peak shifting is *** prior knowledge of the maximum peak shifting,dynamic time warping in a normalized constrained mode provides the best *** work also serves to demonstrate a strategy for rapid analysis of a large number of X-ray diffraction patterns in general beyond data from combinatorial libraries.

关键词： alloy shifting analysis

Preparation and Surface Layer Modification of Silicon Nanoparticles Dispersed in 2-Propanol

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Chinese Physics Letters 1998年第12期15卷 928-930页

作者： ZHU Yong S.iwasaki K.Kimura ZHANG Li-de Institute of Solid State Physics Chinese Academy of SciencesHefei 230031 Department of Material Science Himeji Institute of TechnologyScience Garden CityKamigohriHyogo 678-12Japan

Silicon nanoparticles dispersed in 2-propanol were prepared by using an arc plasma with gas flow method in a new designed home-made *** particles are composed of silicon crystal core covered by oxidized amorphous silicon *** composition of the particle surface layer can be modified by preparing the sample in different *** particles can be also obtained with different core composition and different size which we need.

关键词： preparing apparatus amorphous

Visual simulation of clouds

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Visual Informatics 2017年第1期1卷 1-8页

作者： Yoshinori Dobashi Kei iwasaki Yonghao Yue Tomoyuki Nishita Hokkaido University/UEI Research Japan Wakayama University/UEI Research Japan The University of Tokyo Japan UEI Research/Hiroshima Shudo University Japan

Clouds play an important role when synthesizing realistic images of outdoor *** realistic display of clouds is therefore one of the important research topics in computer *** order to display realistic clouds,we need methods for modeling,rendering,and animating clouds *** is also important to control the shapes and appearances of clouds to create certain visual *** this paper,we explain our efforts and research results to meet such requirements,together with related researches on the visual simulation of clouds.

关键词： Clouds Procedural modeling Image-based modeling Fluid simulation Feedback control Genetic algorithms