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Rare Metals 2024年第3期43卷 1048-1061页

作者： Zheng-Hua He Jian-Fei Gao Ling-bin kong State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals Lanzhou University of TechnologyLanzhou730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou730050China

Exploring wide voltage window materials is not only an available measure to enhance the energy density of hybrid supercapacitor(HSCs),but also avoids the dynamic mismatch caused by different energy storage mechanisms of two electrodes in assembled symmetrical ***,there are few reports about the wide potential window materials except Bi_(2)O_(3)and VO_(2).Therefore,the MnF_(2)synthesized by solvothermal reaction was served as the electrode for *** MnF_(2)exhibited electrochemical activity in alkaline solution in three-electrode system,especially with a wide potential window from-0.8 to+0.5 V in 2 mol·L^(-1)***,the assembled MnF_(2)//MnF_(2)symmetrical HSC had a potential window of 1.5 V,and it exhibited outstanding long-cycle ***,when MnF_(2)was taken as the negative and positive respectively,the potential windows of asymmetric devices CoMoO_(4)//MnF_(2)and MnF_(2)//Activated Carbon(AC)could reach 1.3 and 1.45 V,respectively,showing excellent cycle *** work shows that MnF_(2)material has great research value in HSC,and provides a new research direction for developing high-performance devices.

关键词： Manganese fluoride Potential window Hybrid supercapacitors Electrochemical performance

Underwater image clarifying based on human visual colour constancy using double-opponency

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CAAI Transactions on Intelligence Technology 2024年第3期9卷 632-648页

作者： bin kong Jing Qian Pinhao Song Jing Yang Amir Hussain Institute of Intelligent Machines Chinese Academy of SciencesHefeiChina Peng Cheng Laboratory ShenzhenChina Anhui Key Laboratory of Biomimetic Sensing and Advanced Robot Technology HefeiChina University of Science and Technology of China HefeiChina Peking University Shenzhen Graduate School ShenzhenChina Edinburgh Napier University EdinburghScotland

Underwater images are often with biased colours and reduced contrast because of the absorption and scattering effects when light propagates in *** images with degradation cannot meet the needs of underwater *** main problem in classic underwater image restoration or enhancement methods is that they consume long calcu-lation time,and often,the colour or contrast of the result images is still *** of using the complicated physical model of underwater imaging degradation,we propose a new method to deal with underwater images by imitating the colour constancy mechanism of human vision using ***,the original image is converted to the LMS *** the signals are linearly combined,and Gaussian convolutions are per-formed to imitate the function of receptive fields(RFs).Next,two RFs with different sizes work together to constitute the double-opponency ***,the underwater light is estimated to correct the colours in the *** contrast stretching on the luminance is *** show that the proposed method can obtain clarified underwater images with higher quality than before,and it spends significantly less time cost compared to other previously published typical methods.

关键词： computers computer vision image processing image reconstruction

Microstructure and room temperature fracture toughness of Nb-Si-based alloys with Sr addition

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Rare Metals 2024年第8期43卷 3904-3912页

作者： Yong-Lin Huang Li-Na Jia bin kong Yue-Ling Guo Na Wang School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Nb-Si-based alloys show great potential to surpass the widely used Ni-based *** element Sr is widely applied in aluminum and magnesium alloys,but reports about the effects of Sr on Nb-Si-based alloys are quite ***,Nb-Si-based alloys with nominal compositions of Nb-15Si-24Ti-4Cr-2Al-2Hf-0/0.05/0.15Sr(at%)were prepared by directional solidification and heat *** microstructural characterization and room temperature fracture toughness of Nb-Si-based alloy were systematically *** show that all these alloys consist of Nb_5Si_3 phase embedded within Nb solid solution(Nb_(ss)) *** Nb_(5)Si_(3) phase becomes refined and more discontinuous after adding minor *** for the fracture toughness,0.05 at% and 0.15 at% Sr additions do not cause significant *** discontinuous and refining mechanism of Sr element was studied,and the analysis of toughness decreasing with Sr addition reveals that the size of Nb_(ss) phase plays a crucial role in determining the fracture toughness.

关键词： Nb-Si alloy Refinement Discontinuous Fracture toughness Nb_(ss)

Observation of Arctic surface currents using data from a surface drifting buoy

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Acta Oceanologica Sinica 2024年第1期43卷 70-79页

作者： Hongxia Chen Lina Lin Long Fan Wangxiao Yang Yinke Dou bingrui Li Yan He bin kong Guangyu Zuo Na Liu First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China Laboratory for Regional Oceanography and Numerical Modeling Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Key Laboratory of Marine Science and Numerical Modeling Ministry of Natural ResourcesQingdao 266061China Naval Research Academy Tianjin 300061China College of Electrical and Power Engineering Taiyuan University of TechnologyTaiyuan 030024China Polar Research Institute of China Shanghai 443005China

During the 10th Chinese Arctic scientific expedition carried out in the summer of 2019,the surface current in the high-latitude areas of the Arctic Ocean was observed using a self-developed surface drifting buoy,which was initially deployed in the Chukchi *** buoy traversed the Chukchi Sea,Chukchi Abyssal Plain,Mendeleev Ridge,Makarov Basin,and Canada Basin over a period of 632 *** returning to the Mendeleev Ridge,it continued to drift toward the ***,the track of the buoy reflected the characteristics of the transpolar drift and Chukchi Slope Current,as well as the inertial flow,cross-ridge surface flow,and even the surface disorganized flow for some time *** results showed that:(1)the transpolar drift mainly occurs in the Chukchi Abyssal Plain,Mendeleev Ridge,and western Canada Basin to the east of the ridge where sea ice concentration is high,and the average northward flow velocity in the region between 79.41°N and 86.32°N was 5.1 cm/s;(2)the average surface velocity of the Chukchi Slope Current was 13.5 cm/s,and while this current moves westward along the continental slope,it also extends northwestward across the continental slope and flows to the deep sea;and(3)when sea ice concentration was less than 50%,the inertial flow was more significant(the maximum observed inertial flow was 26 cm/s,and the radius of the inertia circle was 3.6 km).

关键词： Chinese National Arctic Research Expedition(CHINARE) surface drifting buoy transpolar drift Chukchi Slope Current inertial flow

Effect of artificial natural light on the development of myopia among primary school-age children in China:a three-year longitudinal study

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International Journal of Ophthalmology(English edition) 2024年第5期17卷 924-931页

作者： Hui-Min Cai Meng-Yan Li Yi Cao Yu-Lin Wu Ming Liang Yu-Shi Chen Bi-Kun Xian Yu-Juan Huang Xiang-bin kong Department of Ophthalmology the Second People’s Hospital of FoshanAffiliated Foshan Hospital of Southern Medical UniversityFoshan 528000Guangdong ProvinceChina Guangdong Medical University Zhanjiang 524023Guangdong ProvinceChina Guangdong Cosio Lighting Corporation Foshan 528000Guangdong ProvinceChina

AIM:To assess the efficacy of artificial natural light in preventing incident myopia in primary school-age ***:This is a prospective,randomized control,intervention study.A total of 1840 students from 39 classes in 4 primary schools in Foshan participated in this *** whole randomization method was adopted to include classes as a group according to 1:1 randomized *** in the control group were illuminated by usual light,and classrooms in the intervention group were illuminated by artificial natural *** students received uncorrected visual acuity and best-corrected visual acuity measurement,non-cycloplegic autorefraction,ocular biometric examination,slit lamp and strabismus ***-year follow-up,the students underwent same *** was defined as spherical equivalent refraction≤-0.50 D and uncorrected visual acuity<20/***:There were 894 students in the control group and 946 students in the intervention group with a mean±SD age of 7.50±*** three-year cumulative incidence rate of myopia was 26.4%(207 incident cases among 784 eligible participants at baseline)in the control group and 21.2%(164 incident cases among 774 eligible participants at baseline)in the intervention group[difference of 5.2%(95%CI,3.7%to 10.1%);P=0.035].There was also a significant difference in the three-year change in spherical equivalent refraction for the control group(-0.81 D)compared with the intervention group[-0.63 D;difference of 0.18 D(95%CI,0.08 to 0.28 D);P<0.001].Elongation of axial length was significantly different between in the control group(0.77 mm)and the intervention group[0.72 mm;difference of 0.05 mm(95%CI,0.01 to 0.09 mm);P=0.003].CONCLUSION:Artificial natural light in the classroom of primary schools can result in reducing incidence rate of myopia during a period of three years.

关键词： myopia artificial natural light school-age children efficacy

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大学生体育锻炼网络指导平台研究

当代体育科技 2024年第20期14卷 154-158页

作者：孔斌复旦大学体育教学部上海200433

该研究基于大学生体质健康测试数据,利用K-means聚类算法和反向传播(BP)神经网络建立了体质分析模型,并在此基础上,针对各体质类型制定了锻炼方案,建立了课外活动网络指导平台。结果表明,该研究建立的体质分析模型预测精确度达到90%以上... 详细信息

该研究基于大学生体质健康测试数据,利用K-means聚类算法和反向传播(BP)神经网络建立了体质分析模型,并在此基础上,针对各体质类型制定了锻炼方案,建立了课外活动网络指导平台。结果表明,该研究建立的体质分析模型预测精确度达到90%以上,能够较准确地判断大学生的体质类型。将模型嵌入大学生体育锻炼网络指导平台,实现了精准化评价大学生体质类型,并自动化提供运动处方的功能,对大学生养成锻炼习惯具有积极的促进作用。

关键词：体质健康 BP神经网络体育锻炼指导体育锻炼网络平台

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基于AI大模型的智慧运维平台设想

广播与电视技术 2024年第3期51卷 166-169页

作者：孔彬国家广播电视总局广播电视规划院北京100866

本文首先研究了AI大模型和智慧运维平台的最新发展趋势,剖析了智能决策时代的智慧运维平台的运维对象和功能模块;然后根据该智慧运维平台的设计要素,充分运用AI大模型智能技术与方法,构建了智慧运维平台的逻辑步骤、数据流程和设计方案。

关键词：大模型智慧运维决策范式

山区林业产业发展对城乡收入差距的影响机制——基于就业与收入中介效应的视角

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自然资源学报 2024年第1期39卷 62-83页

作者：孔凡斌王宁徐彩瑶浙江农林大学生态文明研究院杭州311300 浙江农林大学浙江省乡村振兴研究院杭州311300 浙江农林大学经济管理学院杭州311300 南京林业大学数字林业与绿色发展研究院南京210037

协同推进山区林业产业发展与缩小城乡收入差距,对于国家实施林业高质量发展推动共同富裕示范区建设具有重要意义。基于浙江省山区26县2001—2021年的面板数据,运用固定效应模型、中介效应模型和门槛模型揭示山区林业产业发展对城乡收入... 详细信息

协同推进山区林业产业发展与缩小城乡收入差距,对于国家实施林业高质量发展推动共同富裕示范区建设具有重要意义。基于浙江省山区26县2001—2021年的面板数据,运用固定效应模型、中介效应模型和门槛模型揭示山区林业产业发展对城乡收入差距的影响机制。结果表明:(1)林业产业发展对城乡收入差距的影响为负,且在不同经济发展水平下的影响存在差异,经济发展水平高于5.953时,林业产业发展对城乡收入差距的影响降低。(2)山区林业产业规模通过就业和收入对城乡收入差距产生负向影响,山区林业产业结构合理化程度则通过收入效应缩小城乡收入差距。(3)相对于跨越发展县,林业产业发展对生态发展县城乡收入差距的负向影响更大,相对于城镇居民,对农村居民的增收效果更明显,林业产业发展有助于缩小城乡收入差距。应严格保护夯实山区林业产业发展资源基础,以科技创新引领山区林业产业高质量发展,以优化产业结构促进山区林业产业迭代升级,以就地就近就业带动山区农村居民增收。

关键词：林业产业发展收入差距中介效应浙江省山区

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吸波沥青混合料的制备及微波自愈合特性

材料科学与工程学报 2024年第1期42卷 129-136页

作者：赵毅孔斌万田宝郑煜重庆交通大学交通土建工程材料国家地方联合工程实验室重庆400074 重庆交通大学材料科学与工程学院重庆400074 重庆交通大学土木工程学院重庆400074 河北迁曹高速公路开发有限公司河北唐山063200 重庆晟赞建设工程有限公司重庆404100

吸波材料具有良好的微波传热能力,可用于沥青路面微裂缝自修复。本研究选取了炭黑粉、羰基铁粉和镍锌铁氧体粉3种吸波材料替换部分矿粉制备了SMA-13吸波沥青混合料。通过车辙试验、低温弯曲破坏试验和冻融劈裂试验对比分析了不同吸波沥... 详细信息

吸波材料具有良好的微波传热能力,可用于沥青路面微裂缝自修复。本研究选取了炭黑粉、羰基铁粉和镍锌铁氧体粉3种吸波材料替换部分矿粉制备了SMA-13吸波沥青混合料。通过车辙试验、低温弯曲破坏试验和冻融劈裂试验对比分析了不同吸波沥青混合料的路用性能,并采用半圆弯曲(SCB)试验研究了吸波材料类型、掺量、微波加热时间等因素对吸波沥青混合料表面温度分布和自愈合性能的影响。利用扫描电子显微镜(SEM)和X射线衍射(XRD)分析吸波材料的微观特性。结果表明,随吸波材料掺量从10%增至30%,炭黑粉沥青混合料的动稳定度和冻融劈裂强度比都呈现出逐渐上升趋势,而低温弯曲应变则表现出先增加后减小的特征;羰基铁粉沥青混合料动稳定度和低温弯曲应变均呈现先增加后减小的趋势,而冻融劈裂强度比表现出逐渐减小的特征;镍锌铁氧体粉沥青混合料动稳定度和低温弯曲应变均呈现逐渐减小趋势,而冻融劈裂强度比则与之相反。吸波沥青混合料的表面温度随着吸波材料掺量和微波加热时间的增加而逐渐上升,能够快速达到沥青混合料裂缝面的愈合温度,从而增强沥青混合料的微波自愈合性能。

关键词：吸波材料沥青混合料路用性能微波加热自愈合特性

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区域医疗物资供应链综合管理平台应用实践

中国卫生信息管理杂志 2024年第2期21卷 216-222页

作者：孔斌沈国平李彬上海市静安区卫生信息中心上海市200072 上海万序健康科技有限公司上海市201900 上海信医科技有限公司上海市200040

目的在公立医院高质量发展及区域医疗卫生服务体系建设与发展的背景下,提升区域医疗物资信息监管能力和区域一体化管理水平。方法基于SPD管理模式与医疗物资供应链成熟经验,兼顾区域医疗机构物资管理需求,设计适用于该背景下的区域医疗... 详细信息

目的在公立医院高质量发展及区域医疗卫生服务体系建设与发展的背景下,提升区域医疗物资信息监管能力和区域一体化管理水平。方法基于SPD管理模式与医疗物资供应链成熟经验,兼顾区域医疗机构物资管理需求,设计适用于该背景下的区域医疗物资管理模式及平台,并通过案例分析验证该平台对于提高医院医疗物资管理水平的成效。结果实现了全区医疗物资统一管理,释放了医院人力管理成本,提高了物资精细化管理程度;实现医院零库存,解决了医疗机构物资资金占用与管理效率低下等问题,提高了监管部门与医疗机构的信息交互效率。结论基于SPD模式的区域医疗物资供应链综合管理平台可以有效地规划企业资源,实现医疗物资供应信息化、可追溯和线上监管,压缩物资供应链成本,提高监管能力。

关键词：区域一体化物资管理平台供应链协同