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Predictive model of risk factors of High Flow Nasal Cannula using machine learning in COVID-19

Infectious Disease Modelling 2022年第3期7卷 526-534页

作者： Nobuaki Matsunaga Keisuke Kamata Yusuke Asai Shinya Tsuzuki Yasuaki Sakamoto Shinpei Ijichi Takayuki Akiyama a Jiefu Yu Gen Yamada Mari Terada Setsuko Suzuki Kumiko Suzuki sho Saito Kayoko Hayakawa Norio Ohmagari AMR Clinical Reference Center National Center for Global Health and MedicineTokyoJapan DataRobot Inc. TokyoJapan Disease Control and Prevention Center National Center for Global Health and MedicineTokyoJapan Biostatistics Division Center for Research Administration and SupportNational Cancer CenterTokyoJapan

With the rapid increase in the number of COVID-19 patients in Japan,the number of patients receiving oxygen at home has also increased rapidly,and some of these patients have *** efficient approach to identify high-risk patients with slowly progressing and rapidly worsening COVID-19,and to avoid missing the timing of therapeutic intervention will improve patient prognosis and prevent medical *** admitted to medical institutions in Japan from November 14,2020 to April 11,2021 and registered in the COVID-19 Registry Japan were *** factors for patients with High Flow Nasal Cannula invasive respiratory management or higher were comprehensively explored using machine ***-specific cohorts were created,and severity prediction was performed for the patient surge *** were able to obtain a model that was able to predict severe disease with a sensitivity of 57%when the specificity was set at 90%for those aged 40e59 years,and with a specificity of 50%and 43%when the sensitivity was set at 90%for those aged 60e79 years and 80 years and older,*** were able to identify lactate dehydrogenase level(LDH)as an important factor in predicting the severity of illness in all age *** machine learning,we were able to identify risk factors with high accuracy,and predict the severity of the *** plan to develop a tool that will be useful in determining the indications for hospitalisation for patients undergoing home care and early hospitalisation.

关键词： COVID-19 Machine learning Severity Risk prediction Japan

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汉语与日语情感表现使役用法的比较研究——以“喜ぶ”“悲しむ”“嬉しい”“悲しい”为例

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苏州科技大学学报（社会科学版） 2019年第1期36卷 35-41页

作者：许临扬福田翔苏州科技大学外国语学院江苏苏州215009 富山大学教养教育学院日本富山9308555

在汉语和日语中有一类表示情绪、情感、心理状态等语义的词。传统研究认为,在这类词汇中,"日语非使役vs汉语使役"的非对称现象显著。通过对汉日平行语料库的实证性考察得出以下结论:第一,在所调查的汉日对译语料中,有94.5%的对译汉语语... 详细信息

在汉语和日语中有一类表示情绪、情感、心理状态等语义的词。传统研究认为,在这类词汇中,"日语非使役vs汉语使役"的非对称现象显著。通过对汉日平行语料库的实证性考察得出以下结论:第一,在所调查的汉日对译语料中,有94.5%的对译汉语语料为非使役形式,仅有5.5%的对译汉语语料表现出了和日语相反的倾向,即语料库的数据显示"日语非使役vs汉语使役"的非对称现象并非普遍现象;第二,通过对汉日双语的比较发现,无法断言在感叹句中存在"日语非使役vs汉语使役"的不对称现象;第三,"日语非使役vs汉语使役"的不对称现象存在,在这一类型中,占据主语位置的一般为情景、状况、状态等情感的诱因,汉语使用使役形式泛化了"情感的感受者",使得情感的诱因具备了某情感感受的特征或属性。

关键词：情感表现使役汉日比较中日対訳コーパス

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聚丙烯性能试验方法对比研究

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合成树脂及塑料 2008年第4期25卷 36-39页

作者：王雅玲刘莎周继红中国石油化工有限公司北京燕山分公司聚丙烯事业部北京102500

选择均聚聚丙烯(PP-H)、抗冲共聚聚丙烯(PP-B)、无规共聚聚丙烯(PP-R)共7个牌号的聚丙烯(PP)产品为研究对象,对比研究了国际标准化组织(简称 ISO)制定的标准和美国材料试验协会(简称 ASTM)制定的标准对三类 PP 性能测试的影响。ISO 和 A... 详细信息

选择均聚聚丙烯(PP-H)、抗冲共聚聚丙烯(PP-B)、无规共聚聚丙烯(PP-R)共7个牌号的聚丙烯(PP)产品为研究对象,对比研究了国际标准化组织(简称 ISO)制定的标准和美国材料试验协会(简称 ASTM)制定的标准对三类 PP 性能测试的影响。ISO 和 ASTM 2种标准测得的 PP 产品的拉伸性能、弯曲性能、缺口冲击强度和负荷变形温度存在一定的差异。但2种标准的测试结果具有一定的规律性,这些规律可为今后修订聚丙烯行业和企业标准提供参考。

关键词：聚丙烯 ISO ASTM 试验方法

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大火热辐射对日本铁道车辆用材料燃烧性能影响的定量研究

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国外铁道车辆 2020年第4期57卷 24-29页

作者： [日]sho YAMANAKA 周方涵(译) 刘宏友(校) 不详

利用锥形量热仪对日本铁道车辆用材料进行了防火试验,对铁道车辆用材料的防火性能进行了分类,并与日本用酒精灯法进行防火试验的结果进行了粗略对比。

关键词：燃烧性能阻燃防火试验日本

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Verification of Dosimetric and Positional Accuracy of Dynamic Tumor Tracking Intensity Modulated Radiation Therapy

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2019年第4期8卷 211-224页

作者： Masaki Sueoka Akira Sawada Hiroaki Tanabe Yuki Okada sho Taniuchi Noboru Okuuchi Masao Tanooka Masaki Kokubo Koichiro Yamakado Department of Radiology Hyogo College of Medicine Nishinomiya Japan Department of Radiological Technology Kobe City Medical Center General Hospital Kobe Japan Department of Radiological Technology Faculty of Medical Science Kyoto College of Medical Science Nantan Japan Department of Radiation Oncology Kobe City Medical Center General Hospital Kobe Japan

Purpose: We performed both, dosimetric and positional accuracy verification of dynamic tumor tracking (DTT) intensity modulated radiation therapy (IMRT), with the Vero4DRT system using a moving phantom (QUASAR respiratory motion platform;QUASAR phantom) and system log files. Methods: The QUASAR phantom was placed on a treatment couch. Measurement of the point dose and dose distribution was performed for conventional IMRT, with the QUASAR phantom static and moving;for DTT IMRT, this was performed with the phantom moving for pyramid shaped, prostate, paranasal sinus, and pancreas targets. The QUASAR phantom was driven by a sinusoidal signal in the superior-inferior direction. Furthermore, predicted positional errors induced by the Vero4DRT system and mechanical positional errors of the gimbal head, were calculated using the system log files. Results and Conclusion: For DTT IMRT, the dose at the evaluation point was within 3% compared with the verification plan, and the dose distribution in the passing rates of γ was 97.9%, with the criteria of 3% dose and 3 mm distance to agreement. The position error calculated from the log files was within 2 mm, suggesting the feasibility of employing DTT IMRT with high accuracy using the Vero4DRT system.

关键词： Dynamic Tumor Tracking (DTT) Intensity Modulated Radiation Therapy (IMRT) Point Dose Verification Dose Distribution Verification Log File Analysis

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Development of a digital zenith telescope for advanced astrometry

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Science China(Physics,Mechanics & Astronomy) 2012年第4期55卷 723-732页

作者： HANADA Hideo ARAKI Hiroshi TAZAWA Seiichi TSURUTA Seiitsu NODA Hirotomo ASARI Kazuyoshi SASAKI sho FUNAZAKI Ken'ichi SATOH Atsushi TANIGUCHI Hideo KIKUCHI Mamoru TAKAHASHI Tomoe YAMAZAKI Atsumu PING JinSong KAWANO Nobuyuki PETROVA Natalia GOUDA Naoteru YANO Taihei YAMADA Yoshiyuki NIWA Yoshito KONO Yusuke IWATA Takahiro National Astronomical Observatory of Japan Iwate-ken 0230861Japan Department of Engineering Department Iwate UniversityIwate 0208550Japan National Astronomical Observatory Chinese Academy of SciencesBeijing 100012China Oshu Space&Astronomy Museum Iwate-ken 0230861Japan Department of Astronomy Kazan State UniversityKazan 420008Russia Section of Graduate School of Science Division of Physics and Astronomy Kyoto UniversityKyoto 6068501Japan Japan Aerospace Exploration Agency Kanagawa 2525210Japan

Like other optical astrometric techniques,the Photographic Zenith Tube(PZT) has played a key role in the past observations of the Earth rotation,and it also has a potential to be applied to several other observations by taking advantage of automatic observations with self compensation of tilt of the *** here propose In-situ Lunar Orientation Measurement(ILOM) to study lunar rotational dynamics by direct observations of the lunar rotation from the lunar surface by using a small telescope like PZT with an accuracy of 1 milli-seconds of arc(1 mas) in the post-SELENE *** second application is to obtain local gravity field on the Earth by combining deflection of the vertical measured by PZT and the position measured by Global Positioning System(GPS) or Global Navigation Satellite System(GNSS).The accuracy required for this purpose is not as strict as *** have already developed a Bread Board Model(BBM) of the telescope for ILOM and made some experiments in order to know the performance of the driving mechanism under a similar condition to the lunar environment showing high vacuum,large temperature change and dusty *** have also shown that it is possible to correct the effects of uniform temperature change upon the optical system by using a simple model with an accuracy of better than 1 *** model has the potential to attain the accuracy of 1 mas,based on the results of the experiments and the simulations.

关键词： high accuracy orbit determination SAR LRS SELENE

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Hayabusa2’s superior solar conjunction mission operations: Planning and post-operation results

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Astrodynamics 2020年第4期4卷 265-288页

作者： Stefania Soldini Hiroshi Takeuchi sho Taniguchi shota Kikuchi Yuto Takei Go Ono Masaya Nakano Takafumi Ohnishi Takanao Saiki Yuichi Tsuda Fuyuto Terui Naoko OgawaYuya MimasuTadateru Takahashi Atsushi Fujii Satoru NakazawaKent Yoshikawa Yusuke Oki Chikako Hirose Hirotaka Sawada Tomohiro Yamaguchi Makoto Yoshikawa Department of Mechanical Materials and Aerospace EngineeringUniversity of LiverpoolLiverpool L693BXUK Institute of Space and Astronautical Science Japan Aerospace Exploration AgencySagamihara 252-5210Japan Fujitsu Limited Tokyo 105-7123Japan Mitsubishi Electric Corporation Tokyo 100-8310Japan

In late 2018,the asteroid Ryugu was in the Sun's shadow during the superior solar conjunction *** the Sun-Earth-Ryugu angle decreased to below 3°,the Hayabusa2 spacecraft experienced 21 days of planned blackout in the Earth-probe communication *** was the first time a spacecraft had experienced solar conjunction while hovering around a minor *** the safety of the spacecraft,a low energy transfer trajectory named Ayu was designed in the Hill reference frame to increase its altitude from 20 to 110 *** trajectory was planned with the newly developed optNEAR tool and validated with real time *** article shows the results of the conjunction operation,from planning to fight data.

关键词： superior solar conjunction Hayabusa2 Ryugu hovering satellite mission operations

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Investigation of Well-Balanced kV X-Ray Imaging Conditions between Skin Dose and Image Noise for Dynamic Tumor Tracking Irradiation

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2017年第4期6卷 410-420页

作者： Takahiro Nakai Akira Sawada Hiroaki Tanabe Masaki Sueoka sho Taniuchi Kenji Takayama Takehiro Shiinoki Yoshitomo Ishihara Masaki Kokubo Department of Radiological Technology Kobe City Medical Center General Hospital Kobe Japan Faculty of Medical Science Kyoto College of Medical Science Nantan Japan Department of Radiological Technology Institute of Biomedical Research and Innovation Kobe Japan Department of Radiation Oncology and Image-Applied Therapy Kyoto University Kyoto Japan Department of Radiation Oncology Yamaguchi University Ube Japan Division of Radiation Oncology Institute of Biomedical Research and Innovation Kobe Japan Department of Radiation Oncology Kobe City Medical Center General Hospital Kobe Japan

Purpose: The purposes of this study were to estimate accumulated kV X-ray imaging dose throughout dynamic tumor tracking (DTT) irradiation by Vero 4DRT system and to address an analytical skin dose formula for well-balanced kV X-ray imaging conditions between skin dose and image noise. Method: First, skin dose was measured using kV X-ray tube, chamber, and water-equivalent phantoms. Next, imaging dose for six patients in DTT treatment was computed using log files. Subsequently, scattered dose ratio was calculated by amount of ionization in front of flat panel detector (FPD) for fields with size of maximum and the chamber for 0 - 200 mm-thickness phantoms and tube voltage of 60, 80, 100, 120 kV, respectively. Furthermore, image noise was computed from FPD images. Results: The skin dose was greater by a factor of 1.4 - 1.6 than those in Synergy XVI system. The image noise in FPD, ?was expressed as N = 0.045×(1/QFPDen)0.479, where QFPDen denotes amount of ionization in front of FPD. Then, skin dose, D (N, t, v) was formulated as (0.045/N)(1/0.479)/QFPDen/mAs (t, v) ×D/mAs (v), where QFPDen/mAs (t, v) and D/mAs (v) denote amount of ionization in front of FPD and skin dose per mAs, respectively. Using the formulae, it has been demonstrated that skin dose with 120 kV has become lower than any other tube voltage in this study. Conclusion: Using skin doses for the phantom, the skin dose throughout DTT irradiation was estimated as 0.50 Gy. Furthermore, skin dose by kV X-ray imaging was described as a function of image noise, phantom thickness, and tube voltage, suggesting image noise may be reduced with higher X-ray tube voltage in this phantom study.

关键词： Dynamic Tumor Tracking Irradiation Skin Dose Vero4DRT

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高频无线电技术的发展

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电子与仪表 1989年第3期 2-5页

作者： sho.,G. 钟华

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当代美国城市化演变、趋势及其新特点

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城市发展研究 2006年第5期13卷 13-16+22页

作者：徐和平蔡绍洪四川大学经济学院武汉理工大学

二战后美国城市化向郊区化或逆城市化阶段转变,人口、工厂、商店及各种机构从大城市中心迁移出去,在外围的郊区及小城镇重新定址。在城市化演变过程中,由城市中心及郊区次级中心组成新型的大城市地区逐渐多中心化乃至无中心化,整个大城... 详细信息

二战后美国城市化向郊区化或逆城市化阶段转变,人口、工厂、商店及各种机构从大城市中心迁移出去,在外围的郊区及小城镇重新定址。在城市化演变过程中,由城市中心及郊区次级中心组成新型的大城市地区逐渐多中心化乃至无中心化,整个大城市地区支离破碎。与此同时,城市系统趋于集群化,幅员辽阔的大城市地区经济经过分化与整合,城市化向非城市地区扩散与渗透,出现了新的城市化影响地区,对城乡地区构成了深远的影响。

关键词：城市化演变趋势新特点

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