检索结果-南通市图书馆

Journal of Biomedical Science and Engineering 2024年第1期17卷 1-12页

作者： Eri Matsuyama Masayuki Nishiki Noriyuki takahashi Haruyuki Watanabe Faculty of Informatics University of Fukuchiyama Kyoto Japan Graduate School of Radiological Sciences International University of Health and Welfare Tochigi Japan School of Health Sciences Fukushima Medical University Fukushima Japan School of Radiological Technology Gunma Prefectural College of Health Sciences Gunma Japan

Cross entropy is a measure in machine learning and deep learning that assesses the difference between predicted and actual probability distributions. In this study, we propose cross entropy as a performance evaluation metric for image classifier models and apply it to the CT image classification of lung cancer. A convolutional neural network is employed as the deep neural network (DNN) image classifier, with the residual network (ResNet) 50 chosen as the DNN archi-tecture. The image data used comprise a lung CT image set. Two classification models are built from datasets with varying amounts of data, and lung cancer is categorized into four classes using 10-fold cross-validation. Furthermore, we employ t-distributed stochastic neighbor embedding to visually explain the data distribution after classification. Experimental results demonstrate that cross en-tropy is a highly useful metric for evaluating the reliability of image classifier models. It is noted that for a more comprehensive evaluation of model perfor-mance, combining with other evaluation metrics is considered essential. .

关键词： Cross Entropy Performance Metrics DNN Image Classifiers Lung Cancer Prediction Uncertainty

Corroborative Activities and Recognition Between Community Comprehensive Care Unit’s Nurses and Care Managers in Supporting Discharge of Elderly from Hospital - A Secondary Publication

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Clinical and Nursing Research 2024年第4期8卷 381-392页

作者： Yukie Sakamoto Shizuko Omote Rie Okamoto Yutaro takahashi Satomi Ikeuchi Division of Health Sciences Graduate School of Medical SciencesKanazawa UniversityKanazawa 920-0934Japan Kanazawa City Community Comprehensive Support Center Tobiume Kanazawa 920-0938Japan Faculty of Health Sciences Institute of MedicalPharmaceutical and Health SciencesKanazawa UniversityKanazawa 920-1192Japan

Objective: The purpose of this study was to clarify the collaborative activities and mutual recognition between community comprehensive care unit nurses (Ns) and care managers (CM) in supporting the discharge of the elderly from the hospital. Methods: A total of 300 nurses working in community comprehensive care wards and 360 care managers working in B City in A Prefecture were surveyed using an anonymous self-administered questionnaire. Results: The highest percentage of responses regarding necessary collaborative activities with multiple professions in supporting hospital discharge were the same for Ns and CMs. The items regarding practice with the highest percentages were “relationship as a team” for Ns, and “user-centered awareness” for CM. While these professionals were willing to share information about their patients’ lives after discharge, the percentage of those explaining their expertise was low. It is thought that collaborative activities focusing on these aspects would lead to more appropriate discharge support.

关键词： Discharge support Community comprehensive care ward Ward nurses Care managers Collaborative activities

Preoperative albumin-bilirubin score and liver resection percentage determine postoperative liver regeneration after partial hepatectomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第14期30卷 2006-2017页

作者： Kazuhiro takahashi Masahiko Gosho Yoshihiro Miyazaki Hiromitsu Nakahashi Osamu Shimomura Kinji Furuya Manami Doi Yohei Owada Koichi Ogawa Yusuke Ohara Yoshimasa Akashi Tsuyoshi Enomoto Shinji Hashimoto Tatsuya Oda Department of Gastrointestinal and Hepatobiliary-Pancreatic Surgery University of TsukubaTsukuba 3058-575IbarakiJapan Department of Biostatistics University of TsukubaTsukuba 3058-575IbarakiJapan

BACKGROUND The success of liver resection relies on the ability of the remnant liver to *** of the knowledge regarding the pathophysiological basis of liver regeneration comes from rodent studies,and data on humans are ***,there is limited knowledge about the preoperative factors that influence postoperative *** To quantify postoperative remnant liver volume by the latest volumetric software and investigate perioperative factors that affect posthepatectomy liver *** A total of 268 patients who received partial hepatectomy were *** were grouped into right hepatectomy/trisegmentectomy(RH/Tri),left hepa-tectomy(LH),segmentectomy(Seg),and subsegmentectomy/nonanatomical hepatectomy(Sub/Non)*** regeneration index(RI)and late rege-neration rate were defined as(postoperative liver volume)/[total functional liver volume(TFLV)]×100 and(RI at 6-months-RI at 3-months)/RI at 6-months,*** lower 25th percentile of RI and the higher 25th percentile of late regeneration rate in each group were defined as“low regeneration”and“delayed regeneration”.“Restoration to the original size”was defined as regeneration of the liver volume by more than 90%of the TFLV at 12 months *** The numbers of patients in the RH/Tri,LH,Seg,and Sub/Non groups were 41,53,99 and 75,*** RI plateaued at 3 months in the LH,Seg,and Sub/Non groups,whereas the RI increased until 12 months in the RH/Tri *** to our multivariate analysis,the preoperative albumin-bilirubin(ALBI)score was an independent factor for low regeneration at 3 months[odds ratio(OR)95%CI=2.80(1.17-6.69),P=0.02;per 1.0 up]and 12 months[OR=2.27(1.01-5.09),P=0.04;per 1.0 up].Multivariate analysis revealed that only liver resection percentage[OR=1.03(1.00-1.05),P=0.04]was associated with delayed ***,multivariate analysis demonstrated that the preoperative ALBI score[OR=2.63(1.00-1.05),P=0.02;per 1.

关键词： Liver regeneration Albumin-bilirubin score Liver resection percentage Partial hepatectomy Human Regeneration index

Preliminary Investigation of Copper(II) Ion Binding or Complex Coordination in Lysozeme Molecules

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science and Chemical Engineering 2024年第4期12卷 98-103页

作者： Kou takahashi Ryotaro Miyazaki Daisuke Nakane Temitayo O. Aiyelabola Takashiro Akitsu Department of Chemistry Faculty of Science Tokyo University of Science Tokyo Japan Department of Chemistry Faculty of Science Obafemi Awolowo University Ile-Ife Nigeria

Hydrophobic Val derivative Schiff base copper(II) complexes and dipeptide (AlaAla, GlyGly) derivative Schiff base copper(II) complexes were introduced into egg white lysozyme. X-ray crystal structure analysis revealed amino acid derivative Schiff base copper(II) complexes were obtained. Herein we discuss primarily on the binding mode of copper(II) of the complexes obtained with egg white lysozyme. The electron density of copper(II) ions was confirmed by X-ray crystal structure analysis. The Val derivative Schiff base copper(II) complex was weakly bound at Arg114 of egg white lysozyme. In other copper(II) complexes, binding of copper(II) ions with dissociated ligands to various residues was observed. The binding sites of copper(II) ions were compared with computational scientific predictions.

关键词： Copper Schiff Base Lysozyme Metal-Protein Binding Computational Methods

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

温室气体排放和银行贷款

新金融 2024年第2期 11-15页

作者： Koji takahashi Junnosuke Shino 田振(翻译) 缪蛟(翻译) 国际清算银行(BIS)货币经济部早稻田大学国际通识教育学院不详

该文利用2006—2018年日本上市公司与银行的匹配数据,研究了公司温室气体(GHG)排放对银行贷款的影响。之前的研究结果表明,气候风险虽然对于公司债券、银团贷款定价具有显著影响,但经济意义不显著。该文从贷款金额的角度进一步考察了银... 详细信息

该文利用2006—2018年日本上市公司与银行的匹配数据,研究了公司温室气体(GHG)排放对银行贷款的影响。之前的研究结果表明,气候风险虽然对于公司债券、银团贷款定价具有显著影响,但经济意义不显著。该文从贷款金额的角度进一步考察了银行的贷款行为。研究发现,银行显著减少了对高排放公司的贷款。此外,银行对信贷风险较低的借款公司的温室气体排放更为敏感,即高温室气体排放意味着长期的高信贷风险。本刊编译此篇国际清算银行(BIS)的工作论文,以期为读者带来相关启发。

关键词：温室气体银行贷款杠杆贷款数据

Study of the Effect of Acetic Acid and Phosphate on Copper Corrosion by Immersion Tests

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Materials Sciences and Applications 2024年第1期15卷 15-23页

作者： Yuna Yamaguchi Kaho Sugiura Toyohiro Arima Fuka takahashi Itaru Ikeda Yutaka Yamada Osamu Sakurada Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Gifu Japan Dai-Dan Co. Ltd. Saitama Japan Daiwa Techno Co. Ltd. Gifu Japan

It was reported that hemispheric corrosion occurred in copper tubes in an acetic acid environment. When hemispheric corrosion occurred, corrosion could easily progress if water then flowed into the copper pipe, and countermeasures were needed. Therefore, we studied the copper corrosion caused by acetic acid. The present work investigated the relationship between the corrosion form of copper and acetic acid concentration using phosphorous-deoxidized copper, and reported that hemispherical corrosion was observed at acetic acid concentrations of 0.01 to 1 vol.% (0.002 to 0.2 mol·L-1) in the immersion test. In this study, the effects of acetic acid and phosphate on copper corrosion were examined using oxygen-free copper in immersion tests. The results suggested that different concentrations of phosphate in acetic acid solutions and the presence or absence of acetic acid and phosphate affected the corrosion of copper, resulting in different corrosion forms and corrosion progress.

关键词： Acetic Acid Phosphate Oxygen-Free Copper Hemispherical Corrosion Ant-Nest Corrosion

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

发射市场的客户为何离不开SpaceX

商业周刊（中文版） 2024年第1期 16-17页

作者： Bruce Einhorn Shinhye Kang Heejin Kim Nicholas takahashi 融汐(译) 不详

海伦·休比(Helene Huby)想在欧洲太空历史上留下一笔。作为可重复使用太空舱开发商Exploration Co.的首席执行官,她帮助自己的初创公司在2022年赢得了阿丽亚娜6号(Ariane6)上的一个便宜位置。阿丽亚娜6号是欧洲打算匹敌马斯克旗下Space... 详细信息

海伦·休比(Helene Huby)想在欧洲太空历史上留下一笔。作为可重复使用太空舱开发商Exploration Co.的首席执行官,她帮助自己的初创公司在2022年赢得了阿丽亚娜6号(Ariane6)上的一个便宜位置。阿丽亚娜6号是欧洲打算匹敌马斯克旗下SpaceX公司系列火箭的产品。

关键词：初创公司阿丽亚娜首席执行官 Hub 开发商

Collapse Behavior of Pipe-Framed Greenhouses with and without Reinforcement under Snow Loading:A 3-D Finite Element Analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Civil Engineering and Architecture 2024年第2期18卷 51-59页

作者： Yasushi Uematsu Kazuya takahashi New Industry Creation Hatchery Center Tohoku UniversitySendai 980-8579Japan Engineering Headquarters Shimizu CorporationChuo-kuTokyo 104-8370Japan

The present paper first investigates the collapse behavior of a conventional pipe-framed greenhouse under snow loading based on a 3-D finite element analysis,in which both geometrical and material non-linearities are *** snow load distribution patterns related to the wind-driven snow particle movement are used in the *** is found that snow load distribution affects the deformation and collapse behavior of the pipe-framed greenhouse *** results obtained in this study are consistent with the actual damage ***,discussion is made of the effects of reinforcements by adding members to the basic frame on the strength of the whole structure,in which seven kinds of reinforcement methods are examined.A buckling analysis is also carried *** results indicate that the most effective reinforcement method depends on the snow load distribution pattern.

关键词： Pipe-framed greenhouse snow loading collapse buckling finite element analysis

Ultrasonic echo signal fetures of dissimilar material bonding joints

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2004年第6期14卷 1050-1054页

作者：刚铁 Yasuo takahashi State Key Lab of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China JWRI Osaka University Japan

An ultrasonic evaluation method of echo feature of diffusion bond joint between two dissimilar materials is presented. The echo signal was acquired by an automatic ultrasonic C-scan test system. It is found that the intensity of echo and its phase can be used to evaluate the joint quality, and interface products of dissimilar materials bonding can be evaluated by ultrasonic method.

关键词：超声波测试异金属扩散结合非破坏性演化

Creep and creep-fatigue behavior of high chromium steel weldment

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2011年第3期24卷 175-182页

作者： Yukio takahashi Masaaki TABUCHI Materials Science Laboratory Central Research Institute of Electric Power Industry National Institute of Material Sciences

Strength of welded joints of high chromium steels is one of the important concerns for fabricators and operators of ultra supercritical thermal power plants. A number of creep as well as creep-fatigue tests with tensile hold have been carried out on the welded joints of two types of high chromium steels widely used in Japan, i.e. Grade 91 and 122 steels. It was found that failure occurred in fine grain heat-affected zone in all the creep-fatigue tests, even at a relatively low temperature and fairly short time where failure occurred in plain base metal region in simple creep testing. Four procedures were used to predict failure lives and their results were compared with the test results. A newly proposed energy-based approach gave the best estimation of failure life, without respect of the material and temperature.

关键词： Creep Creep-fatigue High chromium steel Life prediction Welded joint