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A Novel 6G Scalable Blockchain Clustering-Based Computer Vision Character Detection for Mobile Images

Computers, Materials & Continua 2024年第3期78卷 3041-3070页

作者： Yuejie li shijun li Department of Mathematics and Computer Engineering Ordos Institute of TechnologyOrdos017000China School of Mathematics and Physics North China Electric Power UniversityBeijing102206China School of Electrical Information Hunan University of EngineeringXiangtan411104China

6G is envisioned as the next generation of wireless communication technology,promising unprecedented data speeds,ultra-low Latency,and ubiquitous *** tandem with these advancements,blockchain technology is leveraged to enhance computer vision applications’security,trustworthiness,and *** the widespread use of mobile devices equipped with cameras,the ability to capture and recognize Chinese characters in natural scenes has become increasingly *** can facilitate privacy-preserving mechanisms in applications where privacy is paramount,such as facial recognition or personal healthcare *** can control their visual data and grant or revoke access as *** Chinese characters from images can provide convenience in various aspects of people’s ***,traditional Chinese character text recognition methods often need higher accuracy,leading to recognition failures or incorrect character *** contrast,computer vision technologies have significantly improved image recognition *** paper proposed a Secure end-to-end recognition system(SE2ERS)for Chinese characters in natural scenes based on convolutional neural networks(CNN)using 6G *** proposed SE2ERS model uses the Weighted Hyperbolic Curve Cryptograph(WHCC)of the secure data transmission in the 6G network with the blockchain *** data transmission within the computer vision system,with a 6G gradient directional histogram(GDH),is employed for character *** the deployment of WHCC and GDH in the constructed SE2ERS model,secure communication is achieved for the data transmission with the 6G *** proposed SE2ERS compares the performance of traditional Chinese text recognition methods and data transmission environment with 6G *** results demonstrate that SE2ERS achieves an average recognition accuracy of 88%for simple Chinese characters,compared to 81.2%with traditional ***

关键词： 6G technology blockchain end-to-end recognition Chinese characters natural scene computer vision algorithms convolutional neural network

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A Recommendation Method for Highly Sparse Dataset Based on Teaching Recommendation Factorization Machines

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Computers, Materials & Continua 2020年第9期64卷 1959-1975页

作者： Dunhong Yao shijun li Ang li Yu Chen School of Computer Science and Engineering Huaihua UniversityHuaihua418000China Key Laboratory of Wuling-Mountain Health Big Data Intelligent Processing and Application in Hunan Province Universities Huaihua418000China Key Laboratory of Intelligent Control Technology for Wuling-Mountain Ecological Agriculture in Hunan Province Huaihua418000China School of Computer Wuhan UniversityWuhan430072China Department of Electrical and Computer Engineering Duke UniversityDurhamNC 27708USA School of Computer Science and Engineering Yulin Normal UniversityYulin537000China

There is no reasonable scientific basis for selecting the excellent teachers of the school’s *** solve the practical problem,we firstly give a series of normalization models for defining the key attributes of teachers’professional foundation,course difficulty coefficient,and comprehensive evaluation of ***,we define a partial weight function to calculate the key attributes,and obtain the partial recommendation ***,we construct a highly sparse Teaching Recommendation Factorization Machines(TRFMs)model,which takes the 5-tuples relation including teacher,course,teachers’professional foundation,course difficulty,teaching evaluation as the feature vector,and take partial recommendation value as the recommendation ***,we design a novel Top-N excellent teacher recommendation algorithm based on TRFMs by course classification on the highly sparse *** results show that the proposed TRFMs and recommendation algorithm can accurately realize the recommendation of excellent teachers on a highly sparse historical teaching *** recommendation accuracy is superior to that of the three-dimensional tensor decomposition model algorithm which also solves sparse *** proposed method can be used as a new recommendation method applied to the teaching arrangements in all kinds of schools,which can effectively improve the teaching quality.

关键词： Highly sparse dataset normalized models teaching recommendation factorization machines excellent teacher recommendation

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Characteristics Study of Weibo Users' Interactions

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Wuhan University Journal of Natural Sciences 2015年第6期20卷 499-504页

作者： liU Jing li shijun School of Computer Wuhan University College of Computer Science South-Central University for Nationalities

An individual＇s personal network is a basic object of study in sociology. This article analyzes and compares sina-weibo users＇ personal network size based on over 2 billion tweets gath- ered from over 1.3 million users in 2012. We propose a new measure method for the analysis of user interactions based on how an individual divides his attention across contacts and how user＇s characteristics affect the interactions. We find that the balance of attention of user with different age and gender is quite different in weibo. It displays interesting variation in both different groups of people and different modes of interaction.

关键词： social network microblog interaction user charac-teristics

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A pillar[5]arene-based molecular grapple of hexafluorophosphate

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Chinese Chemical Letters 2019年第5期30卷 957-960页

作者： Zibin Zhang Kechang Sun shijun li Guocan Yu Hangzhou Normal University Hangzhou 310036China Laboratory of Molecular Imaging and Nanomedicine National Institute of Biomedical Imaging and BioengineeringNational Institutes of HealthBethesda 20892United States

A symmetric pillararene-based receptor containing ten triazole units was ***,it formed 1:1 complexes instead of 1:2 with different halide *** was caused by the cooperative multivalent hydrogen-bond interactions between the triazole protons on one side of the receptor and the halide anion,which changed its structure from pillar to ***,by the regulation of the effector F-,it can work like an excavator grapple selectively grasps a PF6-anion.

关键词： Pillararene Molecular machine Anion receptors Molecular recognition

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Levodopa methyl ester increases nerve growth factor expression in visual cortex area 17 in a feline model of strabismic amblyopia

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Neural Regeneration Research 2011年第26期6卷 2026-2031页

作者： Yongwen li Xing lin shijun Zhang Rong li Weizhe Jiang Renbin Huang Department of Pharmacology Guangxi Medical University Nanning 530021 Guangxi Zhuang Autonomous Region China

In the present study, a feline model of strabismic amblyopia was established during a sensitive developmental period, and the influence of levodopa methyl ester and levodopa on nerve growth factor expression in the visual cortex （area 17） was compared. Pattern visual-evoked potential and immunohistochemistry results showed that levodopa methyl ester and levodopa treatment shortened P10o wave latency, increased Pleo amplitude, and increased the number of endogenous nerve growth factor-positive cells in visual cortex levels. In particular, the effects of levodopa methyl ester were superior to levodopa treatment.

关键词： levodopa methyl ester nerve growth factor strabismic amblyopia visual cortex neural regeneration

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Surrounding rock control mechanism of deep coal roadways and its application

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International Journal of Mining Science and Technology 2015年第3期25卷 429-434页

作者： Xie Shengrong li Erpeng li shijun Wang Jinguang He Chongchong Yang Yafeng Faculty of Resource & Safety Engineering China University of Mining & Technology

Aiming at the surrounding rock control problem of mining and preparation entries in Xingdong mine with large mining depth, and the comprehensive control countermeasures including high pre-stress cable truss system, this study put forward powerful anchor support system and anchor cable adaption technology to surrounding rock deformation. Furthermore, the control measures possess the supporting performance with ‘‘primary rigid-following flexible-new rigid, and primary resistance-following yield-new resistance'', which suits deep roadway surrounding rock control. The mechanical model of truss anchor supporting roof beams was established, and the inverted arch deflection produced by the cable pre-stress with stress increment effect and roof beam deflection were obtained. And then the system working mechanism was illustrated. Finally, the surrounding rock support parameters were determined by means of comprehensive methods, and put into practice. The results show that surrounding rock deformation realized secondary stability after three months. The roadway sides convergence value was less than 245mm, and roof subsidence was less than 124mm. In addition, there was no expansion and renovation during service period.

关键词： Deep coal roadway Truss system Inverted arch deflection Equivalent uniform load Powerful anchor support

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Negatively charged crown ethers for binding paraquat in water

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Science China Chemistry 2010年第5期53卷 1073-1079页

作者： Wu, ling liu, Ming Chen, XiaoPeng li, shijun Huang, FeiHe Department of Chemistry Zhejiang University Hangzhou 310027 China College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 310036 China

A water soluble negatively charged fluorescent 1,4-benzo-1,5-naphtho-36-crown-10-based host has been devised and *** shown by proton NMR,ESI mass spectrometry and UV-vis spectroscopy,it binds paraquat with a 1:1 stoichiometry and an association constant of 4.50(±0.02) ×103 M-1 in *** complexation with paraquat in water was further investigated by fluorescence emission *** results revealed that when paraquat was added to the water solution of the host,the fluorescence emission of the host was quenched by the charge transfer between the crown ether host and paraquat guest.A similar bis-p-phenylene-34-crown-10-based host was synthesized as a contrasting *** the naphthalene unit,the second host binds paraquat with a 1:1 stoichiometry and a lower association constant,1.04(±0.04) ×103 M-1,in *** demonstrated that the naphthalene unit could not only act as a strong fluorescence group but also improve the π-πstacking interactions between the host and guest.

关键词： crown ether pseudorotaxane paraquat fluorescent

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Antibody drug conjugate:the“biological missile”for targeted cancer therapy

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Signal Transduction and Targeted Therapy 2022年第4期7卷 1066-1090页

作者： Zhiwen Fu shijun li Sifei Han Chen Shi Yu Zhang Department of Pharmacy Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022People’s Republic of China Hubei Province Clinical Research Center for Precision Medicine for Critical Illness Wuhan 430022People’s Republic of China Drug Delivery Disposition and DynamicsMonash Institute of Pharmaceutical SciencesMonash University(Parkville Campus)381 Royal ParadeParkvilleVIC 3052Australia Faculty of Pharmacy China Pharmaceutical University639 Longmian AvenueJiangning DistrictNanjing 211198People’s Republic of China

Antibody–drug conjugate(ADC)is typically composed of a monoclonal antibody(mAbs)covalently attached to a cytotoxic drug via a chemical *** combines both the advantages of highly specific targeting ability and highly potent killing effect to achieve accurate and efficient elimination of cancer cells,which has become one of the hotspots for the research and development of anticancer *** the first ADC,Mylotarg®(gemtuzumab ozogamicin),was approved in 2000 by the US Food and Drug Administration(FDA),there have been 14 ADCs received market approval so far ***,over 100 ADC candidates have been investigated in clinical stages at *** kind of new anti-cancer drugs,known as“biological missiles”,is leading a new era of targeted cancer ***,we conducted a review of the history and general mechanism of action of ADCs,and then briefly discussed the molecular aspects of key components of ADCs and the mechanisms by which these key factors influence the activities of ***,we also reviewed the approved ADCs and other promising candidates in phase-3 clinical trials and discuss the current challenges and future perspectives for the development of next generations,which provide insights for the research and development of novel cancer therapeutics using ADCs.

关键词： Antibody drugs conjugate

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Relationship between Physical Inactivity and Long-term Outcome in Patients Aged ≥80 Years with Acute Coronary Syndrome

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2018年第1期38卷 64-69页

作者： shijun li Salim Barywani Michael FU Seetion of Geriatric Cardiology Chinese PLA General HospitalBeijing 100853China Section of Cardiology Department of MedicineSahlgrenska University Hospital/Ostra HospitalGothenburgSwede

Physical inactivity is very common in ***,association between physical inactivity and mortality in octogenarians with acute coronary syndrome(ACS)remains *** this study,we aimed to investigate association between physical inactivity and allcause mortality in octogenarian patients with *** this study,we included a total of 353 hospitalized patients,aged≥80 years,with ACS during the period of 5-year *** association between physical inactivity and all-cause mortality was analyzed by multivariable Cox *** the enrolled patients,132(37.4%)were defined as physically inactive,and 221(62.6%)as physically *** with physical inactivity tended to have lower survival rate(21.2%vs.56.5%,P〈0.001)and higher mortality rate(78.8%vs.43.5%,P〈0.001),and had a worse long-term outcome than those with physical activity(chi-square=27.52,and log rank P〈0.001).The physical inactivity was still an independent predictor for long-term allcause mortality independent of confounders including age,prior heart failure,stroke,ejection fraction,beta-blocker,clopidogrel and percutaneous coronary intervention(HR:2.35,95%CI:1.26–4.37,P=0.007).Our study demonstrates that physical inactivity is independently related to increased all-cause mortality in octogenarians with ACS.

关键词： physical inactivity octogenarian acute coronary syndrome mortality

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Optimal Dividend Strategies in a Double Compound Poisson Risk Process

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Wuhan University Journal of Natural Sciences 2011年第2期16卷 133-138页

作者： li shijun MING Ruixing HUANG Longshengt School of Mathematics and Information Sciences JiangxiNormal University Nanchang 330022 Jiangxi China School of Management University of Science andTechnology of China Hefei 230026 Anhui China School of Sciences Zhejiang Agriculture and ForestUniversity Lin'an 311300 Zhejiang China

In this paper, we consider a double compound Poisson risk model involving two independent classes ofinsurance risks with a threshold dividend strategy. We derived the integro-differential equations （IDE） with certain boundary conditions for the present value of dividends until ruin. When the claims from both classes are exponentially distributed, we show that the threshold dividend strategy is an optimal dividend strategy.

关键词： double compound Poisson process the value function integro-differential equation threshold dividend strategy generalized Lundberg’s fundamental equation

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