检索结果-南通市图书馆

Slang feature extraction by analysing topic change on social media

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CAAI Transactions on Intelligence Technology 2019年第1期4卷 64-71页

作者： Kazuyuki Matsumoto Fuji Ren Masaya Matsuoka Minoru Yoshida kenji kita Graduate School of Technology Industrial and Social SciencesTokushima University770-8506Tokushima-shiMinamijosanjima-cho 2-1Japan

Recently,the authors often see words such as youth slang,neologism and Internet slang on social networking sites(SNSs)that are not registered on *** the documents posted to SNSs include a lot of fresh information,they are thought to be useful for collecting *** is important to analyse these words(hereinafter referred to as‘slang’)and capture their features for the improvement of the accuracy of automatic information *** study aims to analyse what features can be observed in slang by focusing on the *** construct topic models from document groups including target slang on Twitter by latent Dirichlet *** the models,they chronologically the analyse change of topics during a certain period of time to find out the difference in the features between slang and general ***,they propose a slang classification method based on the change of features.

关键词： SNSs social media

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一种基于度量距离学习的图像检索方法

广西师范大学学报（自然科学版） 2007年第2期25卷 186-189页

作者：罗辛邰晓英 SHISHIBORI Masami kita kenji Faculty of Engineering Tokushima University Tokushima Japan 770-8506 宁波大学信息科学与工程学院浙江宁波315211 Faculty of Engineering Tokushima University Tokushima Japan 770-8506 Center for Advanced Information TechnologyTokushima UniversityTokushima770-8506 Japan

CBIR系统由于受图像低层特征的限制,制约了它的检索效果。机器学习和统计方法是一种有效的提高检索性能的方法,但通常需要大量的训练样本才能达到满意的检索精度。提出一种理想的距离度量函数,在对图像进行简单分类并提供少量训练样本... 详细信息

CBIR系统由于受图像低层特征的限制,制约了它的检索效果。机器学习和统计方法是一种有效的提高检索性能的方法,但通常需要大量的训练样本才能达到满意的检索精度。提出一种理想的距离度量函数,在对图像进行简单分类并提供少量训练样本的基础上,通过类的距离度量矩阵M的学习来考虑分量之间的相关性。这个度量导入二次最佳化问题的解,将训练样本类结构的倾斜最小化。试验结果表明,该方法能在学习样本极少的情况下提高检索的性能。

关键词： CBIR 聚类距离函数度量学习特征空间

An Improvement of Pedestrian Detection Method with Multiple Resolutions

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Journal of Computer and Communications 2017年第9期5卷 102-116页

作者： Guodong Zhang Peilin Jiang Kazuyuki Matsumoto Minoru Yoshida kenji kita Faculy and School of Engineering Tokushima University Tokushima Japan Xi’an Jiaotong University Xian China

In object detection, detecting an object with 100 pixels is substantially different from detecting an object with 10 pixels. Many object detection algorithms assume that the pedestrian scale is fixed during detection, such as the DPM detector. However, detectors often give rise to different detection effects under the circumstance of different scales. If a detector is used to perform pedestrian detection in different scales, the accuracy of pedestrian detection could be improved. A multi-resolution DPM pedestrian detection algorithm is proposed in this paper. During the stage of model training, a resolution factor is added to a set of hidden variables of a latent SVM model. Then, in the stage of detection, a standard DPM model is used for the high resolution objects and a rigid template is adopted in case of the low resolution objects. In our experiments, we find that in case of low resolution objects the detection accuracy of a standard DPM model is lower than that of a rigid template. In Caltech, the omission ratio of a multi-resolution DPM detector is 52% with 1 false positive per image (1FPPI);and the omission ratio rises to 59% (1FPPI) as far as a standard DPM detector is concerned. In the large-scale sample set of Caltech, the omission ratios given by the multi-resolution and the standard DPM detectors are 18% (1FPPI) and 26% (1FPPI), respectively.

关键词： Deformable Part Model Pedestrian Detection Multi-Resolution Latent SVM

Analysis of deformation mechanisms in magnesium single crystals using a dedicated four-point bending tester

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Journal of Magnesium and Alloys 2024年第5期12卷 1911-1917页

作者： Yutaka Yoshida Rikuto Izawa kenji Ohkubo Faculty of Engineering Kitami Institute of TechnologyKoen-choKitamiHokkaido 090-8507Japan Graduate student Department of Mechanical and Electrical EngineeringKitami Institute of TechnologyKoen-choKitamiHokkaido 090-8507Japan Center for Advanced Research of Materials Faculty of EngineeringHokkaido UniversityKita-kuSapproHokkaido 060-8628Japan Kyokuto Kaihatsu Kogyo Co. Ltd.AwajiChuohuOosakaOosaka 541-0047Japan

In this study,we explored the deformation mechanisms of Mg single crystals using a combination of scanning electron microscopy and electron backscattered diffraction in conjunction with a dedicated four-point bending *** prepared two single-crystal samples,oriented along theanddirections,to assess the mechanisms of deformation when the initial basal slip was *** thesample,the primary{1012}twin(T1)was confirmed along thedirection of the sample on the compression side with an increase in bending *** thesample,T1 and the secondary twin(T2)were confirmed to be along thedirection,with an orientation of±60°with respect to the bending stress direction,and their direction matched with(0001)in T1 and *** result implies that crystallographically,the basal slip occurs *** addition,thesample showed the double twin in T1 on the compression side and the tertiary twin along thedirection on the tension *** results demonstrated that the maximum bending stress and displacement changed significantly under the bend loading because the deformation mechanisms were different for these single ***,the correlation between bending behavior and twin orientation was determined,which would be helpful for optimizing the bending properties of Mg-based materials.

关键词： Four-point bending Magnesium single crystal Twinning Basal slip Scanning electron microscopy Electron backscatter diffraction

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一个基于向量模型转换的图像反馈检索方法

一个基于向量模型转换的图像反馈检索方法

第二十二届中国数据库学术会议

作者：罗辛邰晓英 Masami Shishibori kenji kita Faculty of Engineering Tokushima University 宁波大学信息科学与工程学院 Center for Advanced Information Technology Tokushima University

1前言近年来,随着数码图像设备的普及和Internet的高速发展,图像检索技术成为近年来热门的研究课题之一。传统型基于内容的图像检索(Content BasedImage Retrieval,CBIR)技术所采用的颜色、纹理、形状等底层视觉特征,目前尚无能力辨别... 详细信息

1前言近年来,随着数码图像设备的普及和Internet的高速发展,图像检索技术成为近年来热门的研究课题之一。传统型基于内容的图像检索(Content BasedImage Retrieval,CBIR)技术所采用的颜色、纹理、形状等底层视觉特征,目前尚无能力辨别出图像中

关键词： Image retrieval Relevance feedback Index forecast Feature vector space warping Image database

来源： cnki会议评论

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基于SOFM的高速图像检索算法实现

广西师范大学学报（自然科学版） 2011年第2期29卷 180-184页

作者：罗辛潘乔王洪亚陈美北研二东华大学计算机科学与技术学院上海201620 德岛大学工学院

如何在高维图像数据库中快速有效地检索相似图像一直是图像检索领域的主要研究课题之一。本文提出一种基于自组织特征映射网络(SOFM)的高速图像检索算法,在保留高维空间距离的前提下将图像特征映射到一维空间,在低维空间的限定范围内完... 详细信息

如何在高维图像数据库中快速有效地检索相似图像一直是图像检索领域的主要研究课题之一。本文提出一种基于自组织特征映射网络(SOFM)的高速图像检索算法,在保留高维空间距离的前提下将图像特征映射到一维空间,在低维空间的限定范围内完成检索工作。通过Corel图像数据库(51 138幅图像)进行的实验表明该算法既明显地提高了检索的速度,又有效地保证了检索的准确率。

关键词：基于内容的图像检索自组织特征映射高维特征最近邻搜索

Indocyanine green plasma clearance rate and 99mTc-galactosyl human serum albumin single-photon emission computed tomography evaluated preoperative remnant liver

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World Journal of Clinical Cases 2022年第25期10卷 8844-8853页

作者： Kentaro Iwaki Satoshi Kaihara Ryosuke kita Koji kitamura Hiroki Hashida kenji Uryuhara Department of Surgery Kobe City Medical Center General HospitalKobe 650-0046HyogoJapan

BACKGROUND Preoperative evaluation of future remnant liver reserves is important for safe *** the remnant is small,preoperative portal vein embolization(PVE)is *** volume analysis has been the primary method of preoperative evaluation,although functional examination may be more *** have used the functional evaluation liver using the indocyanine green plasma clearance rate(KICG)and 99mTc-galactosyl human serum albumin single-photon emission computed tomography(99mTc-GSA SPECT)for safe *** To analyze the safety of our institution’s system for evaluating the remnant liver *** We retrospectively reviewed the records of 23 patients who underwent preoperative *** types of remnant liver KICG were defined as follows:Anatomical volume remnant KICG(a-rem-KICG),determined as the remnant liver anatomical volume rate×KICG;and functional volume remnant KICG(frem-KICG),determined as the remnant liver functional volume rate based on 99mTc-GSA SPECT×*** either of the remnant liver KICGs were>0.05,a hepatectomy was *** factors were *** defined the marginal group as patients with a-rem-KICG of0.05 and compared the postoperative outcomes between the marginal and not marginal(both a-rem-KICG and f-rem-KICG>0.05)*** All 23 patients underwent planned *** hepatectomy,right trisectionectomy and left trisectionectomy were in 16,6 and 1 cases,*** mean of blood loss and operative time were 576 mL and 474 min,*** increased amount of frem-KICG was significantly larger than that of a-rem-KICG after PVE(0.034 vs 0.012,P=0.0273).The not marginal and marginal groups had 17(73.9%)and 6(26.1%)patients,*** complications of Clavian-Dindo classification grade II or higher and post-hepatectomy liver failure were observed in six(26.1%)and one(grade A,4.3%)patient,*** 90-d mortality was *** marginal group had no

关键词： 99mTc-galactosyl human serum albumin single-photon emission computed tomography Hepatectomy Indocyanine green Indocyanine green plasma clearance rate Liver function evaluation Remnant liver reserve

Favipiravir and its potentials in COVID-19 pandemic:An update

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Asian Pacific Journal of Tropical Medicine 2021年第10期14卷 433-455页

作者： Dao Ngoc Hien Tam Ahmad T Qarawi Mai Ngoc Luu Morgan Turnage Linh Tran Gehad Mohamed Tawfik Le Huu Nhat Minh Nguyen Tien Huy Tatsuo Iiyama Kyoshi kita kenji Hirayama Online Research Club School of Tropical Medicine and Global HealthNagasaki UniversityNagasaki 852-8523Japan Asia Shine Trading&Service CO.LTD. Ho Chi Minh City 700000Vietnam Essen Healthcare BronxNew York 10461 USA Department of Internal Medicine University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh City 700000Vietnam American University of the Caribbean CupecoySint Maarten Institute of Fundamental and Applied Sciences Duy Tan UniversityHo Chi Minh City 700000Vietnam Faculty of Natural Sciences Duy Tan UniversityDa Nang City 550000Vietnam Department of Otorhinolaryngology Faculty of MedicineAin Shams UniversityCairoEgypt Methodist Hospital MerrillvilleIndianaUnited States School of Tropical Medicine and Global Health Nagasaki University1-12-4 SakamotoNagasaki 852-8523Japan Department of International Trials Center of Clinical SciencesNational Center for Global Health and Medicine(NCGM)TokyoJapan

The COVID-19 pandemic has caused millions of deaths and hundreds of millions of confirmed infections *** pandemic has prompted researchers to produce medications or vaccines to reduce or stop the progression and spread of this disease.A variety of previously licensed and marketed medications are being tested for the treatment and recurrence of SARS-CoV2,including favipiravir(Avigan).Favipiravir was recognized as an influenza antiviral drug in Japan in 2014,and has been known to have a potential in vitro activity against SARS-CoV-2,in addition to its broad therapeutic safety *** was recently approved and officially used in many countries *** review provides insights and up-to-date knowledge of the current role of favipiravir in the treatment of COVID-19 infection,focusing on preclinical and ongoing clinical trials,evidence of its efficacy against SARS-CoV-2 in COVID-19,side effects,anti-viral mechanism,and the pharmacokinetic properties of the drug in the treatment of *** to its teratogenic effects,favipiravir cannot be offered to expectant or pregnant *** practical efficacy of such an intervention regimen will depend on its dose,treatment duration,and cost as well as difficulties in application.

关键词： Favipiravir Avigan COVID-19 SARS-CoV-2 Antiviral Review Efficacy

Titania-supported iridium catalysts for dehydrogenative synthesis of benzimidazoles

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Chinese Chemical Letters 2020年第3期31卷 605-608页

作者： kenji Wada Han Yu Qi Feng Department of Chemistry for Medicine Kagawa UniversityMiki-ChoKita-GunKagawa 761-0793Japan Department of Advanced Materials Science Kagawa UniversityTakamatsuKagawa 761-0396Japan

In this review,development of supported catalysts for the dehydrogenative synthesis of benzimidazoles from primary alcohols and 1,2-phenyIenediamine derivatives is briefly *** them,titania-supported iridium catalysts showed excellent activities under mild reaction ***,the low-temperature activity of iridium catalyst was significantly affected by titania supports,and the reaction of 1,2-phenylenediamine and benzyl alcohol in the presence of rutilesupported catalysts proceeded smoothly at 100℃to give 2-phenylbenzimidazole in high yields of up to 88%,On the other hand,catalysts supported on anatase generally showed poor activity at 100℃.A significant relationship between CO uptake and the activity of titania-supported catalysts has been reported,indicating that well-reduced iridium species on rutile would be responsible for the predominant catalytic *** present results suggest the importance of the selection of suitable titania supports for the iridium catalysts.

关键词： Benzimidazole Iridium Titania Heterogeneous catalysts Dehydrogenation