检索结果-南通市图书馆

PHUI-GA: GPU-based efficiency evolutionary algorithm for mining high utility itemsets

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2024年第4期35卷 965-975页

作者： JIANG Haipeng wu guoqing sun Mengdan li Feng sun Yunfei FANG Wei Jiangsu Provincial Engineering Laboratory of Pattern Recognition and Computational Intelligence Department of Computer Science and TechnologyJiangnan UniversityWuxi 214122China China Ship Scientific Research Center Wuxi 214082China Taihu Laboratory of Deepsea Technological Science Wuxi 214082China Department of Mathematics Nanjing UniversityNanjing 210023China

Evolutionary algorithms(EAs)have been used in high utility itemset mining(HUIM)to address the problem of discover-ing high utility itemsets(HUIs)in the exponential search *** have good running and mining performance,but they still require huge computational resource and may miss many *** to the good combination of EA and graphics processing unit(GPU),we propose a parallel genetic algorithm(GA)based on the platform of GPU for mining HUIM(PHUI-GA).The evolution steps with improvements are performed in central processing unit(CPU)and the CPU intensive steps are sent to GPU to eva-luate with multi-threaded *** show that the mining performance of PHUI-GA outperforms the existing *** mining 90%HUIs,the PHUI-GA is up to 188 times better than the existing EAs and up to 36 times better than the CPU parallel approach.

关键词： high utility itemset mining(HUIM) graphics process-ing unit(GPU)parallel genetic algorithm(GA) mining perfor-mance

The Carbon Isotope Fluctuations across the Lower–Middle Jurassic Boundary and the Paleoclimate Changes

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2019年第1期93卷 244-245页

作者： YI Haisheng XIA guoqing li Gaojie YI Fan ZHANG Shuai CAI Zhanhu JIAO Haijing wu Chihua Institute of Sedimentary Geology Chengdu University of Technology College of Earth Sciences Chengdu University of Technology School of Marine Sciences Sun Yat-sen University

The Qiangtang Basin of Tibetan Plateau most widely outcrops marine Jurassic strata in China,even in eastern Asian,and the Jurassic strata and ammonites’occurrence are in favor of researching evolution of paleoceanography in the Tethyan region and global stratigraphic *** work focused on the carbon isotope changes across the J I–J 2 boundary in the eastern Tethys region.

关键词： Carbon strata Plateau marine carbon most

The Greenhouse Climate Records from Organic Carbon Isotope Excursions During the Toarcian (Early Jurassic) Sediments in the Shuanghu Area, Qianghai-Tibetan Plateau

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2019年第3期93卷 776-777页

作者： YI Haisheng JI Changjun DA Xuejuan YI Fan XIA guoqing li Gaojie CHEN Lan JIAO Haijing wu Chihua Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059China Institute of Geological Mechanics Chinese Academy of Geological SciencesBeijing 100081China Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources Beijing 10003 7China Department of Earth Sciences Chongqing University of Science and TechnologyChongqing 401331China College of Earth Sciences Chengdu University of TechnologyChengdu 610059China School of Marine Sciences Sun Yat-sen UniversityGuangzhou 510006China

Objective The organic-matter-rich oil shales outcropped at the Biluo Co area of the Qiangtang Basin in Tibet are of the Toarcian(Early Jurassic)based on the ammonite fauna(Yi et al.,2003).We first proposed its sedimentary age to be the Early Toarcian and correlated with the Posidonia shales and the early Toarcian Oceanic Anoxic Event(TOAE)(Chen et al.,2005).The carbon isotopes excursions and Buchi bivalves suggest that these oil shales at the Biluo Co section are represent of T-OAE in the Asian Tethyan regions.

关键词： Greenhouse Climate Organic Carbon Qianghai-Tibetan Plateau

An online monitor ionization chamber used in particle therapy

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2009年第3期20卷 177-180页

作者： TANG Bin HU Zhengguo MAO Ruishi XU Zhiguo WANG Jiansong YUE Ke TU Xiaolin wu Dapeng CHEN Jinda ZHANG Jie WANG Meng sun Zhiyu ZHANG Xueheng li Qiang XU Hushan XIOA guoqing Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The clinical trials of tumor therapy using heavy ions beam 12C are now in progress at Institute of Modern Physics in Lanzhou. In order to achieve the precise radiotherapy with the high energy 12C beam in active pencil beam scanning mode, we have developed an ionization chamber(IC) as an online monitor for beam intensity and also a dosimeter after calibration. Through the choosing of working gas and voltage, optimizing of the electrics and the read-out system, calibrating the linearity, the detector system provide us one of the simple and highly reliable way to monitoring the beam during the active pencil beam scanning treatments. The measurement results of this detector system show that it could work well under the condition of high energy 12C beam in active pencil beam scanning mode.

关键词：肿瘤治疗临床离子化粒子

在线全文

学校读者我要写书评

暂无评论

柔性直流输电稳定性分析及控制参数整定

电工技术学报 2017年第6期32卷 231-239页

作者：李国庆孙银锋吴学光东北电力大学电气工程学院吉林132012 华北电力大学电气与电子工程学院北京102206 全球能源互联网研究院北京102211 直流电网技术与仿真北京市重点实验室北京102211

针对柔性直流输电的特点,将其稳定性分析分为两部分,即柔直系统直流侧稳定性分析和交直流互联的稳定性分析。对于直流侧的稳定性分析,首先建立柔直系统的简化复频域电路,然后得到等效环路增益,采用Middlebrook判据进行稳定性判断;对于... 详细信息

针对柔性直流输电的特点,将其稳定性分析分为两部分,即柔直系统直流侧稳定性分析和交直流互联的稳定性分析。对于直流侧的稳定性分析,首先建立柔直系统的简化复频域电路,然后得到等效环路增益,采用Middlebrook判据进行稳定性判断;对于柔直系统与交流互联网络,首先探讨其稳定性机理,然后通过dq旋转坐标系下的电流环控制结构框图构建换流站的等效电路,并推导出换流站的等效导纳表达式,最后通过注入非特征谐波电流法进行交流侧阻抗检测,利用交直流阻抗比的频域特性进行稳定性判断,找出稳定的控制参数域。利用PSCAD/EMTDC软件对实际工程中不同等效场景下交流侧阻抗对稳定性的影响进行仿真,证明了采用所提方法进行稳定性判断及控制参数整定的有效性。

关键词：柔性直流输电稳定性 Middlebrook判据交直流阻抗比控制参数整定

Low-dose immune tolerance induction for severe hemophilia A inhibitor patients:Immunosuppressants are generally not necessary for inhibitor-titer below 200 BU/mL

在线全文

学校读者我要写书评

暂无评论

Pediatric Investigation 2024年第2期8卷 91-100页

作者： Zhengping li Jie sun Zekun li Zhenping Chen guoqing liu Wanru Yao Xiaoling Cheng Gang li Yingzi Zhen Di Ai Yaohan Zhou Qianqian Mao Man-Chiu Poon Runhui wu Hemophilia Comprehensive Care Center Hematology DepartmentHematology CenterBeijing Key Laboratory of Pediatric Hematology-OncologyKey Laboratory of Major Diseases in ChildrenNational Key Discipline of Pediatrics(Capital Medical University)Ministry of EducationBeijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijingChina Hematologic Disease Laboratory Hematology DepartmentHematology CenterBeijing Key Laboratory of Pediatric Hematology-OncologyKey Laboratory of Major Diseases in ChildrenNational Key Discipline of Pediatrics(Capital Medical University)Ministry of EducationBeijing Pediatric Research InstituteBeijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijingChina Department of Pharmacy Beijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijingChina Departments of Medicine Pediatrics and OncologyUniversity of Calgary Cumming School of MedicineCalgaryCanada

Importance:It remained unclear that the efficacy comparison between low-dose immune tolerance induction(LD-ITI)incorporating immunosuppressants(IS)when severe hemophilia A(SHA)patients had inhibitor-titer≥200 Bethesda Units(BU)/mL(LD-ITI-IS^(200) regimen)and LD-ITI combining with IS when SHA patients had inhibitor-titer≥40 BU/mL(LD-ITI-IS^(40) regimen).Objective:To compare the efficacy of the LD-ITI-IS^(200) regimen with that of the LD-ITI-IS^(40) regimen for SHA patients with high-titer ***:A prospective cohort study on patients receiving LD-ITI-IS^(200) compared to those receiving LD-ITI-IS^(40) from January 2021 to December *** received LD-ITI[FVIII 50 IU/kg every other day].IS(rituximab+prednisone)was added when peak inhibitor tier≥200 BU/mL in the LD-ITI-IS^(200) regimen and≥40 BU/mL in the LD-ITI-IS^(40) *** is defined as a negative inhibitor plus FVIII recovery≥66%of the ***:We enrolled 30 patients on LD-ITI-IS^(200) and 64 patients on LD-ITI-IS^(40),with similar baseline clinical characteristics.A lower IS-use rate was discovered in the LD-ITI-IS^(200) regimen compared to the LD-ITI-IS^(40) regimen(30.0%vs.62.5%).The two regimens(LD-ITI-IS^(200) ***-ITI-IS^(40))had similar success rate(70.0%vs.79.7%),median time to success(9.4 vs.10.6 months),and annualized bleeding rate during ITI(3.7 vs.2.8).The cost to success was lower for LD-ITI-IS^(200) than for LD-ITI-IS^(40)(2107 vs.3256 US Dollar/kg).Among patients with peak inhibitor-titer 40-199 BU/mL,10 non-IS-using(on LD-ITI-IS^(200) regimen)and 28 IS-using(on LD-ITI-IS^(40) regimen)had similar success rates(70.0%vs.78.6%)and time to success(9.0 vs.8.8 months).Interpretation:In LD-ITI,IS are not necessary for inhibitor titer<200 BU/mL.

关键词： Hemophilia A High-titer inhibitor Immune tolerance induction Immunosuppressant Low-dose

β-decay study of neutron-rich nucleus ^(34)Al

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2017年第4期60卷 69-73页

作者： Rui Han XiangQing li WeiGuang Jiang ZhiHuan li Hui Hua ShuangQuan Zhang CenXi Yuan DongXing Jiang Yanlin Ye Jing li ZongHao li FuRong Xu QiBo Chen Jie Meng JianSong Wang Chuan Xu YeLei sun ChunGuang Wang HongYi wu ChenYang Niu ChenGuang li Chao He Wei Jiang PengJie li Hongliang Zang Jun Feng SiDong Chen Qiang liu XiaoChi Chen HuShan Xu ZhengGuo Hu YanYun Yang Peng Ma JunBing Ma ShiLun Jin Zhen Bai MeiRong Huang Yuan Jie Zhou WeiHu Ma Yong li XiaoHong Zhou YuHu Zhang guoqing Xiao WenLong Zhan School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen University Institute of Modern Physics Chinese Academy of Sciences

The ＂island of inversion＂ has been known for over a quar- ter century, since Warburton et al. [1] proposed that nuclei with intruder ground states would constitute a 3x3 square with Z=10-12, N=20-22 in 1990. Uncovering the underlying inversion mechanism and exploring the scope of the island have attracted significant theoretical and experimental efforts in the following years. Now it is well known that the reduction of N=20 shell gap, which is likely caused by the strong nucleon-nucleon tensor interaction [2-5], allows the intrusion of neutron orbits from the pf shell into the sd shell and results in the inversion of the 2p-2h intruder and 0p-0h normal con- figurations of the nuclear ground states in this region. Mean- while, the original border of the ＂island of inversion＂ has been extended greatly [6-14].

关键词： Al decay study of neutron-rich nucleus

Polar residual network model for assisting evaluation on rat myocardial infarction segment in myocardial contrast echocardiography

在线全文

学校读者我要写书评

暂无评论

中国医学影像技术 2024年第8期40卷 1130-1134页

作者： SHEN Wenqian GUO Yanhui YU Bo CHEN Shuang li Hairu wu Yan li You DU guoqing Department of Ultrasound Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510120China Department of Ultrasound the Second Affiliated Hospital of Harbin Medical UniversityHarbin 150086China Department of Computer Science University of Illinois SpringfieldSpringfield 62703USA

Objective To investigate the value of polar residual network(PResNet)model for assisting evaluation on rat myocardial infarction(MI)segment in myocardial contrast echocardiography(MCE).Methods Twenty-five male SD rats were randomly divided into MI group(n=15)and sham operation group(n=10).MI models were established in MI group through ligation of the left anterior descending coronary artery using atraumatic suture,while no intervention was given to those in sham operation group after *** images of both basal and papillary muscle levels on the short axis section of left ventricles were acquired after 1 week,which were assessed independently by 2 junior and 2 senior ultrasound *** evaluating efficacy of MI segment,the mean interpretation time and the consistency were compared whether under the assistance of PResNet model or *** No significant difference of efficacy of evaluation on MI segment was found for senior physicians with or without assistance of PResNet model(both P>0.05).Under the assistance of PResNet model,the efficacy of junior physicians for diagnosing MI segment was significantly improved compared with that without the assistance of PResNet model(both P<0.01),and was comparable to that of senior *** the assistance of PResNet model,the mean interpretation time of each physician was significantly shorter than that without assistance(all P<0.001),and the consistency between junior physicians and among junior and senior physicians were both moderate(Kappa=0.692,0.542),which became better under the assistance(Kappa=0.763,0.749).Conclusion PResNet could improve the efficacy of junior physicians for evaluation on rat MI segment in MCE images,shorten interpretation time with different aptitudes,also improve the consistency to some extent.

关键词： myocardial infarction deep learning ultrasonography animal experimentation

Subtyping of type A influenza by sequencing the variable regions of HA gene specifically amplified with RT-PCR

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2009年第13期54卷 2164-2167页

作者： YAN An DING GuoHui ZHOU ZhenFeng DONG Hui ZHANG YaKun ZHU Lei HE YunGang ZHANG guoqing li YiXue sun Bing HUANG Zhong LAN Ke JIN li WANG HongYan WANG XiaoNing YANG Zhong ZHONG Yang DAI JianXin GUO YaJun WANG Hao CHE XiaoYan wu Fan YUAN ZhenGan ZHANG Xi CAO ZhiWei ZHOU XiaoNong ZHOU JiaHai MA ZhiYong TONG GuangZhi ZHAO GuoPing JIN WeiRong XIONG Hui Shanghai-MOST Key Laboratory for Disease and Health Genomics Chinese National Human Genome Center at Shanghai Shanghai 201203 China Shanghai Institutes of Biological Sciences Chinese Academy of Sciences (Lab of Computational Genomics CAS-MPG Partner Institute of Computational Biology Center of Bjoinformatics Key Lab of System Biology Lab of Synthetic Biology Institute of Plant Physiology & Ecology Institute Pasteur) Shanghai 200031 China National Engineering Research Center for Biochip Technology Shanghai Biochip Co. Ltd Shanghai 201203 China Shanghai Center for Bioinformation Technology Shanghai 200235 China School of life Sciences Fudan University Shanghai 200433 China School of life Sciences and Technology South China University of Technology Guangzhou 510641 China Cancer Institute Second Military Medical University Shanghai 200433 China National Engineering Research Center for Antibody Drugs Shanghai 201203 China Zhujiang Hospical Southern Medical University Guangzhou 510282 China Shanghai Municipal Center for Disease Control & Prevention Shanghai 200336 China School of life Sciences and Technology Tongji University Shanghai 200092 China National Institute for Parasitic Diseases Chinese Center for Disease Control and Prevention Shanghai 200025 China Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China Shanghai Veterinary Research Institute Chinese Academy of Agricultural Sciences Shanghai 200241 China

The outbreak of a novel influenza A(H1N1) virus across the globe poses a threat to human *** is of paramount importance to develop a rapid,reliable and inexpensive diagnostic *** on the bioinformatic information from public database,primers specific for influenza A virus surface protein haemagglutinin(HA) of several subtypes(including H1,H2,H3,H5,H7 and H9) were ***-specific PCR products were subjected to sequencing for accurately distinguishing H1 and H3 subtypes from *** sequencing-based detection method will not only be applied to rapid detection and simultaneous subtype identification of new influenza A virus H1N1,but also provide the strategies to monitor other new types ofinfluenza virus with explosive potential.

关键词：流感病毒 H9亚型 PCR产物 HA基因测序可变区生物信息学 RT