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Countermeasure against blinding attack for single-photon detectors in quantum key distribution

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Journal of Semiconductors 2024年第4期45卷 76-81页

作者： Lianjun Jiang Dongdong Li Yuqiang fang Meisheng Zhao Ming Liu zhilin Xie Yukang Zhao Yanlin Tang Wei Jiang Houlin fang Rui Ma Lei Cheng Weifeng Yang Songtao Han Shibiao Tang QuantumCTek Co. Ltd.Hefei 230088China Shandong Institute of Quantum Science and Technology Co. Ltd.Jinan 250101China QuantumCTek(Beijing)Co. Ltd.Beijing 100193China School of Cyber Science and Technology University of Science and Technology of ChinaHefei 230027China Anhui Armed Police Force Hefei 230026China School of Electrical Engineering and Automation Anhui UniversityHefei 230601China

Quantum key distribution(QKD),rooted in quantum mechanics,offers information-theoretic security.However,practi-cal systems open security threats due to imperfections,notably bright-light blinding attacks targeting single-photon detectors.Here,we propose a concise,robust defense strategy for protecting single-photon detectors in QKD systems against blinding attacks.Our strategy uses a dual approach:detecting the bias current of the avalanche photodiode(APD)to defend against con-tinuous-wave blinding attacks,and monitoring the avalanche amplitude to protect against pulsed blinding attacks.By integrat-ing these two branches,the proposed solution effectively identifies and mitigates a wide range of bright light injection attempts,significantly enhancing the resilience of QKD systems against various bright-light blinding attacks.This method forti-fies the safeguards of quantum communications and offers a crucial contribution to the field of quantum information security.

关键词： quantum key distribution single photon detector blinding attack pulsed blinding attack countermeasure quan-tum communication

Optical colorimetric LiTaO_(3)wafers for highprecision lithography on frequency control of SAW devices

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Photonics Research 2024年第2期12卷 341-349页

作者： MING HUI fang YINONG XIE fangQI XUE zhilin WU JUN SHI SHENG YU YANG YILIN LIU ZHIHUANG LIU HSIN CHI WANG FAJUN LI QING HUO LIU JINFENG ZHU School of Electronic Science and Engineering Xiamen UniversityXiamen 361005China Quanzhou San’an Integrated Circuit Co. Ltd.Quanzhou 362300China Eastern Institute of Technology Ningbo 315200China

Surface acoustic wave(SAW)resonators based on lithium tantalate(LT,LiTaO_(3))wafers are crucial elements of mobile communication filters.The use of intrinsic LT wafers typically brings about low fabrication accuracy of SAW resonators due to strong UV reflection in the lithography process.This hinders their resonance frequency control seriously in industrial manufacture.LT doping and chemical reduction could be applied to decrease the UV reflection of LT wafers for high lithographic precision.However,conventional methods fail to provide a fast and nondestructive approach to identify the UV performance of standard single-side polished LT wafers for highprecision frequency control.Here,we propose a convenient on-line sensing scheme based on the colorimetry of reduced Fe-doped LT wafers and build up an automatic testing system for industrial applications.The levels of Fe doping and chemical reduction are evaluated by the lightness and color difference of LT-based wafers.The correlation between the wafer visible colorimetry and UV reflection is established to refine the lithography process and specifically manipulate the frequency performance of SAW resonators.Our study provides a powerful tool for the fabrication control of SAW resonators and will inspire more applications on sophisticated devices of mobile communication.

关键词： lithography doping wafer

Er-modified MnO_(x) for selective catalytic reduction of NO_(x) with NH_(3) at low temperature:Promoting effect of erbium on catalytic performance

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Journal of Rare Earths 2023年第6期41卷 917-925,I0004页

作者： zhilin fang Shuwen Zhang Aiyong Wang Yanglong Guo Yun Guo Li Wang Wangcheng Zhan Key Laboratory for Advanced Materials Research Institute of Industrial CatalysisSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China International Joint Laboratory of Catalytic Chemistry Department of ChemistryResearch Center of Nano Science and TechnologyCollege of SciencesShanghai UniversityShanghai 200444China

Various Er modified MnO_(x) catalysts were synthesized using co-precipitation approach and tested in the selective catalytic reduction of NO_(x) by ammonia(NH_(3)-SCR).Catalysts were analyzed with various characterization techniques,and it is found that the doping of Er can enormously enhance the catalytic performance of MnO_(x)catalyst.MnEr_(0.1)demonstrates advantageous catalytic performance in the NH_(3)-SCR reaction owing to rich surface acidic sites,high surface content of Mn^(4+),superior redox capacity,and enhanced surface-adsorbed oxygen.From diffuse reflectance infrared Fourier transform spectroscopy(DRIFTs)analysis,it is suggested that the MnEr0.1catalyst follows mainly Eley-Rideal mechanism while MnO_(x) is dominated by Langmuir-Hinshelwood mechanism.

关键词： Mn-based catalyst Selective catalytic reduction Rare earths Co-precipitation

保险还是补偿?政府主导的企业社会责任对负面记录的应对机制

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珞珈管理评论 2024年第3期 75-99页

作者：贾芳杨志林耿晓玉深圳大学管理学院深圳518000 香港城市大学商学院中国香港999077 杭州师范大学阿里巴巴商学院杭州310000

精准扶贫是政府主导的企业社会责任的重要形式之一。为探索负面记录对于企业长短期绩效的影响,以及企业在不同时间参与不同类型的精准扶贫对企业应对负面记录的影响,基于资源基础观和合法性视角,以2016—2021年A股上市公司为研究对象展... 详细信息

精准扶贫是政府主导的企业社会责任的重要形式之一。为探索负面记录对于企业长短期绩效的影响,以及企业在不同时间参与不同类型的精准扶贫对企业应对负面记录的影响,基于资源基础观和合法性视角,以2016—2021年A股上市公司为研究对象展开实证分析。研究结果表明:负面记录对企业长期、短期绩效均会产生消极影响,而参与精准扶贫能够在一定程度上缓解这种消极影响;企业出现负面记录之前参与的精准扶贫和出现负面记录之后参与的精准扶贫分别通过“保险效应”和“补偿效应”削弱了负面记录对于企业绩效的消极影响;不同类型的精准扶贫(慈善型和整合型)对负面记录与绩效的关系起到的调节效果有所差异。本研究为企业应对负面记录等危机以及积极协助政府助推社会长远发展提供了启发和参考。

关键词：负面记录精准扶贫政府主导的企业社会责任合法性保险与补偿效应

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火灾预警防火涂层的研究进展

涂料工业 2024年第3期54卷 77-85页

作者：方蓥玲任犇吴荣凯汪宇闻雪丽沈智林袁必和武汉理工大学安全科学与应急管理学院武汉430070

火灾预警防火涂层能够实现主动预警响应和被动防火保护双重作用,相比于需要安装在特定位置的传统火灾探测报警器,涂层传感材料与火焰的接触面积大大增加,在提高预警效率和可燃材料火灾安全性能方面具有重要的应用价值。从传感材料热致... 详细信息

火灾预警防火涂层能够实现主动预警响应和被动防火保护双重作用,相比于需要安装在特定位置的传统火灾探测报警器,涂层传感材料与火焰的接触面积大大增加,在提高预警效率和可燃材料火灾安全性能方面具有重要的应用价值。从传感材料热致响应特性角度出发,探讨了电阻型和电压型涂层的火灾预警机制,阐释了涂层的3种防火机理;综述了近年来基于传感材料,如氧化石墨烯、碳纳米管、金属氧化物、MXene等的各类涂层在火灾预警与防火性能方面的研究和应用现状,指出火灾预警防火涂层性能比较单一,需赋予其疏水、疏油、自愈合等多种性能以实现涂层的多功能化,开发大尺寸涂层制备技术以实现市场化生产,结合人工智能技术以实现更高水平的预警防火应用,最后对其未来发展趋势进行了展望。

关键词：火灾预警防火涂层多功能化智能化

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压接式IGBT组件的压力均匀性仿真分析

湖南文理学院学报（自然科学版） 2024年第1期36卷 32-38页

作者：丁杰汤芳乔慧杨柏露曾治霖湖南文理学院国际学院湖南常德415000

针对压力不均会导致压接式IGBT模块不同区域的接触电阻和接触热阻不同,进而导致芯片局部温度过高和使用寿命降低等问题,本论文采用有限元方法建立压接式IGBT组件在接触条件下的有限元模型,对比分析实际结构与理想条件的接触压强,并提出... 详细信息

针对压力不均会导致压接式IGBT模块不同区域的接触电阻和接触热阻不同,进而导致芯片局部温度过高和使用寿命降低等问题,本论文采用有限元方法建立压接式IGBT组件在接触条件下的有限元模型,对比分析实际结构与理想条件的接触压强,并提出改进方案。结果表明:原始方案的中心区域芯片接触压强可达44.96MPa,是理想条件接触压强的1.98倍,压力分布不均问题可以从均匀化轴向载荷和增加散热器四周刚度两个方向解决;加工散热器拱度的改进方案可以降低中心区域芯片的接触压强,但四周的芯片总是承受较大的轴向载荷;增加散热器厚度的改进方案可使四周的芯片保持接触,但会增加散热器的重量与热阻;增加支撑环的改进方案可使芯片接触压强降低44%,达到与理想条件接近的受力状态。利用接触压强的仿真分析方法可为压接式IGBT组件结构优化设计提供依据。

关键词：压接式IGBT模块组件接触压力均匀性有限元法

后路寰枢椎侧块关节cage植骨融合内固定术治疗难复性寰枢椎脱位疗效初探

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中国脊柱脊髓杂志 2024年第3期34卷 255-265页

作者：房跃坤杨智麟李昊天王伟舟熊云宇毕航川刘源王兵董俊杰杨晋龚志强陈凌强昆明医科大学第一附属医院骨科昆明市650032

目的:探讨后路寰枢椎侧块关节cage植骨融合内固定术治疗难复性寰枢椎脱位的临床疗效,并与经口咽松解后路复位固定融合术进行疗效对比。方法:回顾性分析2018年1月~2022年8月我科采用后路寰枢椎侧块关节cage植骨融合内固定术(23例,cage组... 详细信息

目的:探讨后路寰枢椎侧块关节cage植骨融合内固定术治疗难复性寰枢椎脱位的临床疗效,并与经口咽松解后路复位固定融合术进行疗效对比。方法:回顾性分析2018年1月~2022年8月我科采用后路寰枢椎侧块关节cage植骨融合内固定术(23例,cage组)与经口咽松解后路复位固定融合术(25例,对照组)治疗的难复性寰枢椎脱位患者的临床资料,cage组男8例,女15例,年龄9~79岁(48.35±14.38岁);对照组男6例,女19例,年龄21~69岁(47.84±13.51岁)。记录两组患者手术时间、术中出血量、住院时间及并发症情况,术前、术后及末次随访时使用JOA评分评估患者神经功能状态,测量术前、术后及末次随访时的寰齿间距(atlantodental interval,ADI)、齿状突顶点距离Chamberlain线的垂直距离(vertical distance from odon to idprocess to Chamberlain′s line,DOCL)、延髓颈髓角(cervicomedullary angle,CMA)、斜坡枢椎角(clivus-axial angle,CAA),评估寰枢椎复位情况。评估侧块关节cage及后方植骨融合情况。结果:所有患者内固定位置良好,减压充分复位满意,症状均明显缓解,未出现椎动脉损伤和脊髓损伤加重。cage组手术时间133.04±34.04min、术中出血量119.13±54.77mL、住院时间14.74±6.10d,均明显短于或少于对照组(253.20±53.98min、181.20±45.40mL、23.96±5.47d)。cage组术前JOA、ADI、DOCL、CMA、CAA分别为6.33±1.13分、7.31±3.05mm、9.47±3.32mm、122.89°±12.58°、122.02°±12.50°,术后分别为13.04±2.17分、2.18±0.67mm、0.89±1.00mm、148.81°±5.43°、146.70°±9.32°,末次随访时分别为14.89±1.17分、2.09±0.69mm、0.83±0.86mm、149.10°±5.11°、146.89°±8.95°;对照组术前JOA、ADI、DOCL、CMA、CAA分别为6.76±1.21分、7.70±0.97mm、10.56±1.99mm、121.53°±4.87°、123.77°±8.95°,术后分别为13.26±1.32分、1.89±0.50mm、1.13±1.08mm、151.40°±6.15°、149.86°±5.58°,末次随访时分别为15.02±0.88分、1.87±0.44mm、0.87±1.39mm、149.48°±4.06°、149.94°±6.61°,两组术后及末次随访JOA、ADI、DOCL、CMA及CAA均较术前明显改善(P0.05)。cage组仅1例切口感染;对照组3例切口感染(口咽2例,后路1例),1例脑脊液漏。两组随访期间内固定在位稳定,末次随访植骨均达到骨性融合,cage组关节间隙高度无丢失。结论:难复性寰枢椎脱位采用后路寰枢椎侧块关节cage植骨融合内固定术与经口咽松解后路复位固定融合术相比疗效相当,但增加了植骨融合位点,能更有效融合,避免了经口手术,减少了手术时间、术中出血量、住院时间及并发症的发生。

关键词：寰枢椎脱位后路侧块关节植骨融合融合器

A genetic variant in IL-6 lowering its expression is protective for critical patients with COVID-19

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Signal Transduction and Targeted Therapy 2022年第5期7卷 1627-1633页

作者： Bo Gong Lulin Huang Yongquan He Wen Xie Yi Yin Yi Shi Jialing Xiao Ling Zhong Yi Zhang zhilin Jiang fang Hao Yu Zhou Huan Li Li Jiang Xingxiang Yang Xiangrong Song Yan Kang Lin Tuo Yi Huang Ping Shuai Yuping Liu fang Zheng Zhenglin Yang Department of Health Management Sichuan Academy of Medical Sciences&Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina Sichuan Provincial Key Laboratory for Human Disease Gene Study Center for Medical GeneticsDepartment of laboratory medicineSichuan Academy of Medical Sciences&Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina Research Unit for Blindness Prevention of Chinese Academy of Medical Sciences(2019RU026) Sichuan Academy of Medical Sciences&Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina Institute of Chengdu Biology Sichuan Translational Medicine HospitalChinese Academy of SciencesChengduSichuanChina Center for Gene Diagnosis&Department of Laboratory Medicine Zhongnan Hospital of Wuhan UniversityWuhanChina Department of Laboratory Medicine Wuhan Leishenshan HospitalWuhanHubeiChina Infectious Disease Department Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610041China Department of Critical Care Medicine Frontiers Science Center for Disease-related Molecular NetworkState Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengduChina

Critical coronavirus disease 2019(COVID-19)is associated with high mortality and potential genetic factors have been reported to be involved in the development of critical COVID-19.We performed a genome-wide association study to identify the genetic factors responsible for developing critical COVID-19.632 critical patients with COVID-19 and 3021 healthy controls from the Chinese population were recruited.First,we identified a genome-wide significant difference of IL-6 rs2069837(p=9.73×10^(−15),OR=0.41)between 437 critical patients with COVID-19 and 2551 normal controls in the discovery cohort.

关键词： protective patients mortality

Analysis of Unsteady Heat Transfer Problems with Complex Geometries Using Isogeometric Boundary Element Method

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Computers, Materials & Continua 2020年第2期62卷 929-962页

作者： Weihua fang zhilin An Tiantang Yu Tinh Quoc Bui Nanjing Automation Institute of Water Conservancy and Hydrology Nanjing210012China Department of Engineering Mechanics Hohai UniversityNanjing211100China Institute for Research and Development Duy Tan UniversityDa Nang CityVietnam Department of Civil and Environmental Engineering Tokyo Institute of Technology2-12-1-W8-22OokayamaMeguro-kuTokyo 152-8552Japan

Numerical analysis of unsteady heat transfer problems with complex geometries by the isogeometric boundary element method(IGABEM)is presented.The IGABEM possesses many desirable merits and features,for instance,(a)exactly represented arbitrarily complex geometries,and higher-order continuity due to non-uniform rational B-splines(NURBS)shape functions;(b)using NURBS for both field approximation and geometric description;(c)directly utilizing geometry data from computer-aided design(CAD);and(d)only boundary discretization.The formulation of IGABEM for unsteady heat transfer is derived.The domain discretization in terms of IGABEM for unsteady heat transfer is required as that in traditional BEM.The internal values however are obtained with the analytical formula according to the values on the boundaries,and its computations are therefore mainly dependent on the discretization of the boundaries.The coordinates of internal control points are obtained with the coordinates of control points on the boundaries using Coons body interpolation method.The developed approach is tested with several numerical examples from simple to complicated geometries.Good agreement is gained with reference solutions derived from either analytical or finite element methods.

关键词： Unsteady heat transfer BEM isogeometric analysis NURBS