检索结果-南通市图书馆

Visual object tracking- classical and contemporary approaches

在线全文

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2016年第1期10卷 167-188页

作者： Ahmad ALI Abdul JALIL Jianwei NIU xiaoke zhao Saima RATHORE Javed AHMED Muhammad AKSAM IFTIKHAR Department of Computer and Information Sciences Pakistan Institute of Engineering & Applied Sciences Islamabad 44000 Pakistan State Key Laboratory of Virtual Reality Technology and Systems School of Computer Science and Engineering Beihang University Beijing 100191 China Department of Electrical (Telecom) Engineering NUST Military College of Signals Islamabad 44000 Pakistan COMSATS Institute of Information Technology Lahore 54000 Pakistan

Visual object tracking （VOT） is an important sub- field of computer vision. It has widespread application do- mains, and has been considered as an important part of surveillance and security system. VOA facilitates finding the position of target in image coordinates of video frames. While doing this, VOA also faces many challenges such as noise, clutter, occlusion, rapid change in object appearances, highly maneuvered （complex） object motion, illumination changes. In recent years, VOT has made significant progress due to availability of low-cost high-quality video cameras as well as fast computational resources, and many modern techniques have been proposed to handle the challenges faced by VOT. This article introduces the readers to 1） VOT and its applica- tions in other domains, 2） different issues which arise in it, 3） various classical as well as contemporary approaches for object tracking, 4） evaluation methodologies for VOT, and 5） online resources, i.e., annotated datasets and source code available for various tracking techniques.

关键词： visual object tracking computer vision imageprocessing point tracking kernel tracking silhouette track-ing

3例CHDFIDD患儿的分子遗传学分析及文献复习

在线全文

学校读者我要写书评

暂无评论

新医学 2024年第4期55卷 292-297页

作者：赵静宣小燕李红英陈政芳范晓萱赵晓科南京医科大学附属儿童医院南京儿童医院南京210008

目的分析先天性心脏缺陷、面部畸形和智力发育障碍[CHDFIDD,细胞周期蛋白依赖性激酶13(CDK13)相关疾病]患儿的临床表型及基因突变情况,探讨其遗传学病因。方法采用芯片捕获高通量测序技术对3例CHDFIDD患儿及其父母的基因组DNA进行全外... 详细信息

目的分析先天性心脏缺陷、面部畸形和智力发育障碍[CHDFIDD,细胞周期蛋白依赖性激酶13(CDK13)相关疾病]患儿的临床表型及基因突变情况,探讨其遗传学病因。方法采用芯片捕获高通量测序技术对3例CHDFIDD患儿及其父母的基因组DNA进行全外显子组测序,对疑似致病突变进行Sanger测序验证和生物信息分析。以“CDK13基因”“CDK13相关疾病”为检索词,检索中国知网、万方数据库建库至2024年2月的文献;以“CDK13”“CDK13-related disorder”“CHDFIDD”为检索词,检索PubMed数据库建库至2024年2月的文献,对相关文献进行复习。结果全外显子组测序结果均提示3例患儿存在CDK13基因杂合突变,分别为c.2572C>T(***858Phe)、c.2579G>A(***860Gln)和c.2602C>T(***868Trp),Sanger测序也证实了3种突变,结合临床表型,3例患儿均被确诊为CHDFIDD。3例患儿在各自家系中表现为新发突变;但不排除患儿双亲之一为该突变的生殖系嵌合体。根据美国医学遗传学与基因组学学会的指南,3个突变位点均可能致病。文献复习检索到14篇相关文献共108例CHDFIDD病例,其中c.2572C>T突变未见文献报道。结论CDK13基因突变可能是该3例患儿的遗传学病因。本研究丰富了CDK13基因突变谱,为CHDFIDD相关疾病的诊疗提供了参考。

关键词：先天性心脏缺陷、面部畸形和智力发育障碍 CDK13基因 CDK13相关疾病全面性发育迟缓智力障碍

经颅磁刺激联合康复训练在孤独症谱系障碍儿童中的疗效及低频振幅分析研究

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

中华全科医学 2024年第7期22卷 1222-1226页

作者：李章吕静赵晓科徐红张玲朱敏南京医科大学附属儿童医院康复医学科江苏南京210008 江苏大学第四附属医院儿科江苏镇江212001

目的通过静息态功能核磁共振低频振幅(ALFF)分析观察低频重复经颅磁刺激(rTMS)对孤独症谱系障碍(ASD)儿童核心症状的改善作用。方法纳入2021年10月—2023年12月于南京医科大学附属儿童医院康复医学科就诊的34例ASD儿童,采用随机数字表... 详细信息

目的通过静息态功能核磁共振低频振幅(ALFF)分析观察低频重复经颅磁刺激(rTMS)对孤独症谱系障碍(ASD)儿童核心症状的改善作用。方法纳入2021年10月—2023年12月于南京医科大学附属儿童医院康复医学科就诊的34例ASD儿童,采用随机数字表法将患儿分为ASD1组和ASD2组,每组17例。ASD1组予常规训练+低频rTMS刺激左前额叶背外侧区(DLPFC),ASD2组予常规训练+假刺激。每组各脱落1例,治疗前、治疗12周后采用孤独症行为量表(ABC)、孤独症评定量表(CARS)、重复刻板行为量表修订版(RBS-R)、孤独症治疗评价量表(ATEC)评估2组ASD患儿核心症状。对2组患儿进行静息态fMRI扫描,观察治疗前后2组ASD患儿核心症状改善情况及静息态下脑区低频振幅值指标变化。结果治疗后,2组ASD患儿CARS、RBS-R、ATEC评分均较治疗前明显改善;治疗后,ASD1组CARS[(32.50±1.63)分vs.(34.75±3.94)分]、RBS-R[7.00(6.00,7.00)分vs.8.00(7.00,11.75)分]、ATEC[(60.20±12.29)分vs.(69.80±13.52)分]总分均优于ASD2组(P<0.05)。治疗后ASD1组ALFF增高脑区主要有右侧眶部额下回、右侧角回、右背外侧额上回等,ASD2组治疗前后脑区无显著变化。结论在常规康复干预基础上,低频rTMS治疗能有效改善ASD儿童核心症状及行为学评价指标,静息态下对脑默认网络、认知等相关脑区的自发神经元调节作用可能是其作用机制。

关键词：孤独症谱系障碍经颅磁刺激疗效静息态功能磁共振低频振幅值

Chemical weathering processes in the Chinese Loess Plateau

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2024年第5期15卷 197-209页

作者： Ningpan Chai Zhiqi zhao xiaoke Li Jun Xiao Zhangdong Jin School of Earth Science and Resources Chang’an UniversityXi’an 710054China State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Xi’an Institute for Innovative Earth Environment Research Xi’an 710061China

Covered by erodible loess and affected by significant seasonal climate variations,chemical weathering in the Chinese Loess Plateau(abbreviated as CLP)has important effects on the hydrochemistry of the Yellow River and the global carbon ***,chemical weathering processes in the CLP are still *** on 296 river water samples in the CLP in the different seasons,hydrochemistry,weathering processes,and their controlling factors were *** waters in the CLP exhibited slightly alkalinity(pH=8.4±0.5)with much high total dissolved solids(TDS)values(691±813 mg/L).The water types of river water in the CLP were primarily SO_(4)^(2-)-Cl^(-)-Na^(+),HCO_(3)^(-)-Ca^(2+)-Mg^(2+),and SO_(4)^(2-)-Cl^(-)-Ca^(2+)-Mg^(2+).According to the forward model,evaporite dissolution has the largest contribution(55.1%±0.2%)to riverine solutes in the CLP,then followed by carbonate weathering(35.6%±0.2%)and silicate weathering(6.5%±0.1%).For spatio-temporal variations,the contribution of evaporite dissolution in the CLP decreased from northwest to southeast with higher proportion in the dry season,carbonate weathering increased from northwest to southeast with a higher proportion in the wet season,and silicate weathering showed minor spatio-temporal ***^(2+)and Mg^(2+)were affected by carbonate precipitation and/or incongruent calcite dissolution,and about 50%of samples exhibited cation exchange *** physical erosion rate in the CLP,which was 372±293 t·km^(-2)·yr^(-1),varied greatly and was greater than those of other worldwide *** weathering rates in the CLP showed an increasing trend *** the wet season,high runoff led to the release of evaporite and carbonate from loess,while the interfacial reaction kinetic limited the increase of the silicate weathering *** CO_(2)consumption budget by carbonate weathering(6.1×10^(10)mol/yr)and silicate weathering(1.6×10^(10)mol/yr)in the CLP accounted for 0.29%and 0.08%of the global carb

关键词： Chemical weathering Chinese Loess Plateau Spatio-temporal variations CO_(2)budget Physical erosion

High-performance magnesium/sodium hybrid ion battery based on sodium vanadate oxide for reversible storage of Na^(+)and Mg^(2+)

维普期刊数据库评论

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 Energy Chemistry 2024年第9期96卷 79-88页

作者： xiaoke Wang Titi Li Xixi Zhang Yaxin Wang Hongfei Li Hai-Feng Li Gang zhao Cuiping Han Institute of Applied Physics and Materials Engineering University of MacaoAvenida da UniversidadeTaipaMacao 999078China School of Physics and Technology University of JinanJinan 250022ShandongChina Songshan Lake Materials Laboratory Dongguan 523808GuangdongChina Faculty of Materials Science and Energy Engineering Shenzhen University of Advanced TechnologyShenzhen 518055GuangdongChina Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina

Magnesium ion batteries(MIBs)are a potential field for the energy storage of the future but are restricted by insufficient rate capability and rapid capacity ***-sodium hybrid ion batteries(MSHBs)are an effective way to address these ***,we report a new type of MSHBs that use layered sodium vanadate((Na,Mn)V_(8)O_(20)·5H_(2)O,Mn-NVO)cathodes coupled with an organic 3,4,9,10-perylenetetracarboxylic diimide(PTCDI)anode in Mg^(2+)/Na^(+)hybrid *** electrochemical cycling,Mg^(2+)and Na^(+)co-participate in the cathode reactions,and the introduction of Na^(+)promotes the structural stability of the Mn-NVO cathode,as cleared by several ex-situ ***,the Mn-NVO cathode presents great specific capacity(249.9 mA h g^(−1)at 300 mA g^(−1))and cycling(1500 cycles at 1500 mA g^(−1))in the Mg^(2+)/Na^(+)hybrid ***,full battery displays long lifespan with 10,000 cycles at 1000 mA g^(−1).The rate performance and cycling stability of MSHBs have been improved by an economical and scalable method,and the mechanism for these improvements is discussed.

关键词： Aqueous battery Hybrid ion battery Mg^(2+)/Na^(+)co-intercalation High-rate performance Organic-water hybrid electrolyte

Generating ^(1)O_(2) and Co^(IV)=O through efficient peroxymonosulfate activation by ZnCo_(2)O_(4)nanosheets for pollutant control

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第9期17卷 8025-8035页

作者： xiaoke Zhang Yangyang Zhang Jiaqi Tian Yadan Guo Zhongkui Zhou Zhongyi Liu Zaiwang zhao Bin Liu Jun Li College of Chemistry Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou 450052China State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou UniversityZhengzhou 450001China School of Water Resources and Environmental Engineering East China University of TechnologyNanchang 330013China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China College of Energy Materials and Chemistry College of Chemistry and Chemical EngineeringInnerMongolia UniversityHohhot 010070China

Heterogeneous advanced oxidation processes(AOPs)based on non-radical reactive species are considered as a powerful technology for wastewater purification due to their long half-lives and high adaptation in a wide pH ***,we fabricate surface Co defect-rich spinel ZnCo_(2)O_(4)porous nanosheets,which can generate≡CoIV=O and ^(1)O_(2) over a wide pH range of 3.81-10.96 by the formation of amphoteric≡Zn(OH)2 in peroxymonosulfate(PMS)activation *** functional theory(DFT)calculations show Co defect-rich ZnCo_(2)O_(4)possesses much stronger adsorption ability and more electron transfer to ***,the adsorption mode changes from terminal oxygen Co-O-Co to Co-O,accelerating the polarization of adjacent oxygen,which is beneficial to the generation of≡CoIV=O and Generating ^(1)O_(2) .Co defect-rich ZnCo_(2)O_(4)porous nanosheets exhibit highly active PMS activation activity and stability in p-nitrophenol(PNP)degradation,whose toxicity of degradation intermediates is significant *** Co defect-rich ZnCo_(2)O_(4)nanosheet catalyst sponge/PMS system achieved stable and efficient removal of PNP with a removal efficiency higher than 93%over 10 *** work highlights the development of functional catalyst and provides an atomic-level understanding into non-radical PMS activation process in wastewater treatment.

关键词： advanced oxidation processes ZnCo_(2)O_(4)nanosheets peroxymonosulfate activation CoIV=O,wastewater treatment

Reversible solid-liquid conversion enabled by self-capture effect for stable non-flow zinc-bromine batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第6期9卷 1035-1044页

作者： Xixi Zhang xiaoke Wang Guangmeng Qu Tairan Wang Xiliang zhao Jun Fan Cuiping Han Xijin Xu Chunyi Zhi Hongfei Li School of Physics and Technology University of JinanShandong250022China Songshan Lake Materials Laboratory DongguanGuangdong523808China Department of Materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueHong KongChina Faculty of Materials Science and Engineering and Low Dimensional Energy Materials Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong518055China School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhenGuangdong518055China

Non-flow aqueous zinc-bromine batteries without auxiliary components(e.g.,pumps,pipes,storage tanks)and ion-selective membranes represent a cost-effective and promising technology for large-scale energy ***,they generally suffer from serious diffusion and shuttle of polybromide(Br^(-),Br^(3-))due to the weak physical adsorption between soluble polybromide and host carbon materials,which results in low energy efficiency and poor cycling ***,we develop a novel self-capture organic bromine material(1,10-bis[3-(trimethylammonio)propyl]-4,4'-bipyridinium bromine,NVBr4)to successfully realize reversible solid complexation of bromide components for stable non-flow zinc-bromine battery *** quaternary ammonium groups(NV^(4+)ions)can effectively capture the soluble polybromide species based on strong chemical interaction and realize reversible solid complexation confined within the porous electrodes,which transforms the conventional“liquid-liquid”conversion of soluble bromide components into“liquid-solid”model and effectively suppresses the shuttle ***,the developed non-flow zinc-bromide battery provides an outstanding voltage platform at 1.7 V with a notable specific capacity of 325 mAh g^(-1)NVBr4(1 A g^(-1)),excellent rate capability(200 mAh g^(-1)NVBr4 at 20 A g^(-1)),outstanding energy density of 469.6 Wh kg^(-1)and super-stable cycle life(20,000 cycles with 100%Coulombic efficiency),which outperforms most of reported zinc-halogen *** mechanism analysis and DFT calculations demonstrate that the chemical interaction of quaternary ammonium groups and bromide species is the main reason for suppressing the shuttle *** developed strategy can be extended to other halogen batteries to obtain stable charge storage.

关键词： Solid-liquid conversion Self-capture Non-ﬂow zinc-bromine batteries Quaternary ammonium

独立微网中虚拟同步发电机的频率自恢复控制策略

在线全文

学校读者我要写书评

暂无评论

电网技术 2019年第6期43卷 2125-2131页

作者：张宇华赵晓轲方艺翔上海电力学院电气工程学院

在采用虚拟同步发电机控制的独立微电网中,为使频率获得良好的动态响应特性,利用虚拟同步发电机的储能单元参与二次调频,提出一种独立微网中虚拟同步发电机的频率自恢复控制策略(frequency self-recovery,FSR);并对双机二次调频系统进... 详细信息

在采用虚拟同步发电机控制的独立微电网中,为使频率获得良好的动态响应特性,利用虚拟同步发电机的储能单元参与二次调频,提出一种独立微网中虚拟同步发电机的频率自恢复控制策略(frequency self-recovery,FSR);并对双机二次调频系统进行了稳定性分析;该控制策略能够根据频率偏移自动在一次二次调频控制策略间切换,有效抑制频率越限,使频率较快恢复,且能在不依赖复杂通信系统的情况下有效提高独立微网的频率稳定性,具有较高的可靠性。仿真分析验证了文中所提方法的有效性。

关键词：微网储能虚拟同步发电机频率自恢复

面向数字人文的顾城诗歌解读——基于词频分析法

在线全文

学校读者我要写书评

暂无评论

图书馆杂志 2020年第11期39卷 106-119页

作者：赵小克丁绪辉傅柱常州大学商学院江苏靖江214500 常州大学怀德学院江苏靖江214500 江苏大学财经学院江苏镇江212013 江苏科技大学经济管理学院江苏镇江212003

利用文献计量学方法对中国现代文学作品进行"量化"解读和分析,为数字人文研究提供新的范式和思路。以中国现代文学中的顾城诗歌为例,在顾城诗歌创作自我分期的基础上,按照时间顺序对顾城诗歌创作分期进行修正和扩展;结合顾城生平资料,... 详细信息

利用文献计量学方法对中国现代文学作品进行"量化"解读和分析,为数字人文研究提供新的范式和思路。以中国现代文学中的顾城诗歌为例,在顾城诗歌创作自我分期的基础上,按照时间顺序对顾城诗歌创作分期进行修正和扩展;结合顾城生平资料,对不同阶段的顾城诗歌作品进行基本统计分析;对顾城诗歌文本语料进行中文分词,利用词频分析法从全局和分时两个角度对顾城诗歌文本语料进行词频统计分析。将顾城诗歌创作的四分期扩展为六阶段,利用统计分析法分析了各阶段顾城诗歌创作的数量变化及其缘由,利用词频分析法揭示了顾城诗歌的整体主题风格和各阶段创作的演变过程。分析结果表明,利用词频分析法能够较为客观地解读和分析现代文学作品的创作主题和创作风格。由于作者、技术、数据等原因,研究结果尚有一定局限性。

关键词：数字人文顾城诗歌词频分析法文献计量学现代文学