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Energy-efficient mechanism based on ACO for the coverage problem in sensor networks

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Journal of Southeast University(English Edition) 2007年第2期23卷 255-260页

作者：黄如朱杰徐光辉上海交通大学电子工程系上海200240 解放军理工大学通信工程学院南京210016

An energy-efficient heuristic mechanism is presented to obtain the optimal solution for the coverage problem in sensor networks. The mechanism can ensure that all targets are fully covered corresponding to their levels of importance at minimum cost, and the ant colony optimization algorithm （ACO） is adopted to achieve the above metrics. Based on the novel design of heuristic factors, artificial ants can adaptively detect the energy status and coverage ability of sensor networks via local information. By introducing the evaluation function to global pheromone updating rule, the pheromone trail on the best solution is greatly enhanced, so that the convergence process of the algorithm is speed up. Finally, the optimal solution with a higher coverage- efficiency and a longer lifetime is obtained.

关键词： sensor networks coverage problem ant colony optimization (ACO) energy-efficiency

基于甲基化特异性PCR的外周血循环游离DNA甲基化检测对乳腺癌诊断价值的荟萃分析

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当代医学 2024年第13期30卷 1-5页

作者：刘杰朱启富张丹余琦慧郑欣姚水洪汪新华衢州职业技术学院医学院浙江衢州324000 开化县音坑乡卫生院浙江衢州324309

目的通过Meta分析系统评估基于甲基化特异性PCR(MSP)的外周血循环游离DNA(cfDNA)甲基化检测对乳腺癌的诊断价值。方法检索PubMed、Embase、Cochrane数据库,检索时间为2011年1月至2021年12月,以“Breast neoplasms”“Breast cancer”“M... 详细信息

目的通过Meta分析系统评估基于甲基化特异性PCR(MSP)的外周血循环游离DNA(cfDNA)甲基化检测对乳腺癌的诊断价值。方法检索PubMed、Embase、Cochrane数据库,检索时间为2011年1月至2021年12月,以“Breast neoplasms”“Breast cancer”“Methylation”“Cell-free DNA”等为检索词,检索有关血液循环cfDNA甲基化用于乳腺癌诊断的文献,根据纳入及排除标准筛选文献。使用QUADAS-2对纳入文献进行质量评价,提取研究数据并使用Stata 16.0对各效应量进行合并,分析异质性及来源,以Deek’s法检验发表偏倚。结果共检索318篇文献,最终纳入12篇文献的27项研究进行Meta分析,患者2195例,纳入研究存在高度异质性(I^(2)>50.00%)。采用随机效应模型合并灵敏度为0.43[95%CI(0.31~0.56)],合并特异度为0.97[95%CI(0.94~0.99)],合并阳性似然比(LR+)为16.30[95%CI(7.00~37.80)],合并阴性似然比(LR-)为0.59[95%CI(0.47~0.73)],合并诊断比值比(DOR)为28.00[95%CI(11.00~70.00)],合并AUC为0.85[95%CI(0.82~0.88)]。结论基于MSP的外周血cfDNA甲基化检测对乳腺癌有较高的辅助诊断价值。

关键词：循环游离DNA 甲基化乳腺癌甲基化特异性PCR 荟萃分析

ENERGY-EFFICIENT HEURISTIC METRIC FOR SCP IN SENSOR NETWORKS

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Transactions of Nanjing University of Aeronautics and Astronautics 2008年第1期25卷 51-60页

作者：黄如朱杰徐光辉上海交通大学电子工程系解放军理工大学通信工程学院

A heuristic metric is presented to achieve the optimal connected set covering problem （SCP） in sensor networks. The coverage solution with the energy efficiency can guarantee that all targets are fully covered. Among targets, the crucial ones are redundantly covered to ensure more reliable monitors. And the information collected by the above coverage solution can be transmitted to Sink by the connected data-gathering structure. A novel ant colony optimization （ACO） algorithm--improved-MMAS-ACS-hybrid algorithm （IMAH） is adopted to achieve the above metric. Based on the design of the heuristic factor, artificial ants can adaptively detect the coverage and energy status of sensor networks and find the low-energy-cost paths to keep the communication connectivity to Sink. By introducing the pheromone-judgment-factor and the evaluation function to the pheromone updating rule, the pheromone trail on the global-best solution is enhanced, while avoiding the premature stagnation. Finally, the energy efficiency set can be obtained with high coverage-efficiency to all targets and reliable connectivity to Sink and the lifetime of the connected coverage set is prolonged.

关键词： sensor networks energy efficiency set covering problem (SCP) connectivity ant colony optimization

基于FMS的4周PNF拉伸法对优秀中国跤运动员专项运动表现的影响研究

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体育科技文献通报 2024年第2期32卷 62-64,81页

作者：刘晓慧张浩冉邵芸祺罗杰续晨朱智越武汉体育学院湖北武汉430079

运用FMS测试方法对优秀中国式摔跤运动员进行基础动作测评,通过分析运动员得分情况与左右得分差异来设计PNF本体感觉神经肌肉促进拉伸方法,探析PNF拉伸训练对优秀中国式摔跤运动员专项运动表现之间的影响。研究结论:(1)FMS动能性动作筛... 详细信息

运用FMS测试方法对优秀中国式摔跤运动员进行基础动作测评,通过分析运动员得分情况与左右得分差异来设计PNF本体感觉神经肌肉促进拉伸方法,探析PNF拉伸训练对优秀中国式摔跤运动员专项运动表现之间的影响。研究结论:(1)FMS动能性动作筛查可以有效地筛查与鉴别优秀中国跤运动员需要警示的动作模式,分析出关节活动、核心力量、肌力不对称等问题。(2)PNF纠正性拉伸动作可以有效地缓解中国跤运动员肌肉紧张、疲劳问题,经过拉伸训练后可以有效提高专项运动表现。

关键词： FMS功能性动作筛查 PNF拉伸法中国式摔跤专项运动表现

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Influence of interface within the composite barrier on the tunneling electroresistance of ferroelectric tunnel junctions with symmetric electrodes

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Chinese Physics B 2015年第2期24卷 372-375页

作者：王品之朱素华潘涛吴银忠 Physics Department Soochow University Physics Department Changshu Institute of Technology School of Mathematics and Physics Suzhou University of Science and Technology

The interface with a pinned dipole within the composite barrier in a ferroelectric tunnel junction（FTJ） with symmetric electrodes is *** from the detrimental effect of the interface between the electrode and barrier in previous studies,the existence of an interface between the dielectric SrTiO_3 slab and ferroelectric BaTiO_3 slab in FTJs will enhance the tunneling electroresistance（TER） ***,the interface with a lower dielectric constant and larger polarization pointing to the ferroelectric slab favors the increase of TER ***,interface control of high performance FTJ can be achieved.

关键词： ferroelectric tunnel junction interface effect tunneling electroresistance

Interaction of cobalt with ceria thin films and its influence on supported Au nanoparticles

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Chinese Chemical Letters 2017年第8期28卷 1760-1766页

作者： Wei-Jia Wang Yan Wang Qian Xu Huan-Xin Ju Tao Wang Zhi-jie Tao Shan-Wei Hu Jun-Fa zhu National Synchrotron Radiation Laboratory and Collaborative Innovation Center of Suzhou Nano Science and Technology University of Science and Technology of ChinaHefei 230029China

The interaction of Co with ceria thin films and its influence on the sintering behavior of Au were investigated by scanning tunneling microscopy（STM）, synchrotron radiation photoemission spectroscopy（SRPES） and X-ray photoelectron spectroscopy（XPS）. The strong interaction between Co and CeO_2（111） leads to oxidation of Co to Co^（2＋） at 300 K, accompanied by partial reduction of ceria surface at low Co coverages. Subsequent Co deposition results in an increasing fraction of metallic Co. Annealing to high temperatures induces Co^（2＋）ions diffuse into the CeO_2 film, while the small metallic Co islands agglomerate into larger ones. The bimetallic Co–Au particles were prepared by deposition of Au on the existing Co particles on ceria surfaces. The sintering behavior of Co–Au bimetallic surfaces is found to be highly determined by the stoichiometry of ceria supports. The addition of Co to the Au/CeO_2 surface suppresses the sintering of Au particles at high temperatures in comparison with that of pure Au particles. However, Au particles are less stable on the Co/CeO_（1.82） layer than on CeO_（1.82） surface.

关键词： Cobalt Gold Ceria SRPES XPS STM

The associations of lens power with age,axial length and type 2 diabetes mellitus in Chinese adults aged 50 and above

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Eye and Vision 2020年第6期7卷 563-570页

作者： Luyao Ye Jiangnan He Xinji Zhang Yi Xu Qiuying Chen Yao yin ying Fan Lina Lu Jianfeng zhu Haidong Zou Xun Xu Department of Preventative Ophthalmology Shanghai Eye Disease Prevention and Treatment CenterShanghai Eye HospitalNo.380 Kangding RoadShanghai 200040China Department of Ophthalmology Shanghai General HospitalShanghai Jiao Tong UniversityNational Clinical Research Center for Eye DiseasesShanghai Key Laboratory of Ocular Fundus DiseasesShanghai Engineering Center for Visual Science and PhotomedicineShanghai Engineering Center for Precise Diagnosis and Treatment of Eye DiseasesNo.100 Haining RoadShanghai 200080China Department of Health Statistics Naval Military Medical UniversityNo.800 Xiangyin RoadShanghai 200433China

Background:To investigate the associations of lens power with age,axial length(AL),and Type 2 diabetes mellitus(DM)in Chinese adults aged 50 and ***:Random clustering sampling was used to identify adults aged 50 years and above in urban regions of *** participants underwent a comprehensive ophthalmic examination including subjective refraction,autorefraction,and *** crystalline lens power was calculated using Bennett’s ***:A total of 4177 adults were included.A linear decrease in lens power was observed both with age and with AL,followed by a stop of lens power loss after the age of 70 or when AL≥25 mm,*** with Type 2 DM presented higher lens power(0.43 diopter(D),p<0.001)and thicker lens thickness(0.06 mm,p<0.001).In multivariate regression models,there was a positive correlation between lens power and Type 2 DM when age<75 years(p<0.001)or AL<25 mm(p<0.001)after adjusting for other factors,while no significant association was found in participants aged≥75 years(p=0.122)or with AL≥25 mm(p=0.172).Conclusions:The lens power in adults aged 50 and above exhibited two stages with age and with *** 2 DM caused an increase in lens power,which was not seen in participants aged≥75 years or with AL≥25 mm.

关键词： Lens power Type 2 diabetes mellitus Chinese adults Cross-sectional study

Inhibition of corneal fibrosis by Smad7 in rats after photorefractive keratectomy

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Chinese Medical Journal 2013年第8期126卷 1445-1450页

作者： WANG Ti ZHOU Xing-tao YU Yan zhu Jing-yin DAI Jin-hui QU Xiao-mei LE Qi-hua CHU Ren-yuan Department of Ophthalmology Eye & ENT Hospital of FudanUniversity Shanghai 20003 China Department of Ophthalmology the 85th Hospital of People'SLiliberation Army Shanghai 200052 China Department of Safety Assessment Merck Research LaboratoriesWest Point Pennsylvania USA Department of Ophthalmology Huadong Hospital of FudanUniversity Shanghai 200040 China

Background Haze or corneal subepithelial fibrosis is one of the common complications after refractive surgery procedures, such as photorefractive keratectomy （PRK）, laser epithelial keratomileusis, and epipolis laser in situ keratomileusis, which would result in refractive regression, decreased visual quality, and corneal opacification. Haze directly resulted from corneal fibrosis mediated by transforming growth factor β （TGFβ）. SmadT, an inhibitory Smad, can inhibit TGFβ signal transduction. Recently, the effects of Smad7 on the inhibition of fibrosis in several organs have been studied, while little is known about the effects on cornea after PRK. This study was aimed to determine the effects of lentiviral-mediated Smad7 gene expression on corneal fibrosis in rats after PRK. Methods Four different experimental groups were established using right eyes of Sprague-Dawley rats. Thirty-two eyes underwent de-epithelialization only and served as a sham operation group （group 1）. Ninety-six eyes underwent PRK operation and were further divided into group 2 （the PRK group） without lentivector administration, group 3 （the Lv-blank group） with control lentiviral vector without Smad7 administration, and group 4 （the Lv-Smad7 group） with Smad7 expressing lentiviral vector Smad7 administration. At 1 day, 1 week, 1 month, and 3 months after PRK, the transfection efficiency was determined by measuring the fluorescence signal as well as Smad7 protein and mRNA levels. Corneas were further processed for immunoblotting to assess the phosphorylation of Smad2 as a downstream event of TGFβ/Smad signaling. The expression of fibrotic markers, such as c（-smooth muscle actin （c（-SMA）, Type III collagen （collagen III）, and cell cycle-related marker Ki67, was measured by quantitative real-time reverse transcription polymerase chain reaction （RT-PCR）. Results Lentivirus-mediated exogenous Smad7 gene expression in rat corneal tissue resulted in reduced activation of TGFβ/Smad signaling caused by

关键词： cornea fibrosis Smad7 transforming growth factor β, gene therapy, photorefractive kerateetomy

A New Bio-metal-organic Framework:Synthesis,Crystal Structure and Selectively Sensing of Fe(Ⅲ)Ion in Aqueous Medium

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Chinese Journal of Structural Chemistry 2021年第11期40卷 1456-1460,1406页

作者： yin Yu-jie FANG Wang-Jian LIU Shu-Qin CHEN Jun ZHANG Jian-Jun NI Ai-Yun School of Chemical Engineering Dalian University of TechnologyDalian 116024China

A new two-dimensional(2D)bio-metal-organic framework based on trinuclear cluster units,[Zn_(3)(adeninate)_(2)(CH_(3)COO)_(4)]·DMF(Zn–A),was synthesized by the self-assembly of biomolecule adenines with zinc *** analysis reveals its 4^(4) connected layer ***,Zn–A bears high sensitivity and selectivity detection ability of iron ion with the limit of detection being 4.0×10^(-6) mol/L.

关键词： supramolecule crystal structure bio-metal-organic framework Fe^(3+)ion sensing