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基于APT组织攻击行为的网络安全主动防御方法研究

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信息安全研究 2023年第5期9卷 423-432页

作者：殷树刚李祉岐刘晓蕾李宁林寅伟国网思极网安科技(北京)有限公司互联网业务部北京102209

当前国际形势复杂多变,国内社会转型期不断产生新的社会冲突和矛盾,各敌对势力妄图破坏我国关键信息基础设施,造成不良社会影响.现有基于已发生的网络攻击进行检测防御的防御措施缺乏灵活性,且对防御体系的全面性要求极高.因此,提出一... 详细信息

当前国际形势复杂多变,国内社会转型期不断产生新的社会冲突和矛盾,各敌对势力妄图破坏我国关键信息基础设施,造成不良社会影响.现有基于已发生的网络攻击进行检测防御的防御措施缺乏灵活性,且对防御体系的全面性要求极高.因此,提出一种基于攻击行为的电力行业网络安全主动防御方法.经实验验证,该方法通过对攻击者的攻击行为进行分析,结合ATT&CK攻击框架模型,针对高级可持续性威胁(advanced persistent threat,APT)组织通过大量跳板节点层层转发进行间断性的攻击尝试,直到找到突破口和跳板节点,在攻击前或者攻击中可能出现行为和结果的问题,提前发现攻击者的各级跳板、组织或个人信息,在攻击者实施踩点阶段提前发现攻击行为,预先阻断,实现了对攻击行为的主动防御.

关键词：电力主动防御溯源网络安全 APT组织

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Stoichiometric evolutions of PH3 under high pressure:implication for high-Tc superconducting hydrides

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National Science Review 2019年第3期6卷 524-531页

作者： Ye Yuan yinwei Li Guoyong Fang Guangtao Liu Cuiying Pei Xin Li Haiyan Zheng Ke Yang lin Wang Center for High Pressure Science and Technology Advanced Research School of Physics and Electronic Engineering Jiangsu Normal University Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials Engineering Wenzhou University Department of Physics Fudan University Shanghai Institute of Applied Physics Chinese Academy of Sciences

The superconductivity of hydrides under high pressure has attracted a great deal of attention since the recent observation of the superconducting transition at 203 K in strongly compressed *** has been realized that the stoichiometry of hydrides might change under high pressure,which is crucial in understanding the superconducting *** this study,PH3was studied to understand its superconducting transition and stoichiometry under high pressure using Raman,IR and X-ray diffraction measurements,as well as theoretical ***3is stable below 11.7 GPa and then it starts to dehydrogenate through two dimerization processes at room temperature and pressures up to 25 *** resulting phosphorus hydrides,P2H4and P4H6,were verified experimentally and can be recovered to ambient *** further compression above 35 GPa,the P4H6directly decomposed into elemental *** temperature can greatly hinder polymerization/decomposition under high pressure and retains P4H6up to at least 205 *** superconductivity transition temperature of P4H6is predicted to be 67 K at 200 GPa,which agrees with the reported result,suggesting that it might be responsible for superconductivity at higher *** results clearly show that P2H4and P4H6are the only stable P–H compounds between PH3and elemental phosphorus,which is helpful for shedding light on the superconducting mechanism.

关键词： high pressure hydrides superconductivity stoichiometric evolution

Li-Rich Organosulfur Cathode with Boosted Kinetics for High-Energy Lithium-Sulfur Batteries

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Energy & Environmental Materials 2024年第4期7卷 118-125页

作者： Ting Ma Jiaojiao Deng Yuxiao lin Qinghua Liang Liang Hu Xiaohu Wang Jun Liu Xinsheng Zhao yinwei Li Ding Nan Xiaoliang Yu College of Chemistry and Chemical Engineering Inner Mongolia UniversityHohhot 010021China Inner Mongolia Key Laboratory of Graphite and Graphene for Energy Storage and Coating School of Materials Science and EngineeringInner Mongolia University of TechnologyHohhot 010051China Shenzhen Key Laboratory on Power Battery Safety and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate School(SIGS)Shenzhen 518071China School of Physics and Electronic Engineering Jiangsu Normal UniversityXuzhou 221116China Key Laboratory of Rare Earth Ganjiang Innovation AcademyChinese Academy of SciencesGanzhou 341000China Department of Mechanical Engineering Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityHong KongChina

Organosulfur materials containing sulfur-sulfur bonds are an emerging class of high-capacity cathodes for lithium ***,it remains a great challenge to achieve rapid conversion reaction kinetics at practical testing conditions of high cathode mass loading and low electrolyte *** this study,a Li-rich pyrolyzed polyacrylonitrile/selenium disulfide(pPAN/Se_(2)S_(3))composite cathode is synthesized by deep lithiation to address the above *** Li-rich molecular structure significantly boosts the lithium storage kinetics by accelerating lithium diffusivity and improving electronic *** under practical test conditions requiring a lean electrolyte(Electrolyte/sulfur ratio of 4.1μL mg^(-1))and high loading(7 mg cm^(-2)of pPAN/Se_(2)S_(3)),DL-pPAN/Se_(2)S_(3)exhibits a specific capacity of 558 mAh g^(-1),maintaining 484 mAh g^(-1)at the 100th cycle with an average Coulombic efficiency of near 100%.Moreover,it provides(electro)chemically stable Li resources to offset Li consumption over charge-discharge *** a result the as-fabricated anode-free cell shows a superior cycling stability with 90%retention of the initial capacity over 45 *** study provides a novel approach for fabricating high-energy and stable Li-SPAN cells.

关键词： lithium kinetics electrolyte

A Review:Principles and Applications of High-Pressure In Situ Time-Resolved Transient Absorption Spectroscopy

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Ultrafast Science 2024年第2期4卷 45-59页

作者： Xiaxia Qin Guozhao Zhang lin Chen Qinglin Wang Guangyu Wang Haiwa Zhang yinwei Li Cailong Liu School of Physics Science and Information Technology Liaocheng UniversityLiaocheng 252059China Laboratory of Quantum Functional Materials Design and Application of Physics and Electronic Engineering Jiangsu Normal UniversityXuzhou 22116China

Time-resolved transient absorption(TA)spectroscopy measurement technology provides detailed information into the ultrafast dynamics by tracking the transitions and deactivation processes of the excited-state carriers,which holds vast potential for investigating processes related to the luminescence and nonradiative recombination of *** is considered a potent tool for tuning the carrier dynamic *** combination of high-pressure experimental technology and time-resolved TA spectroscopy measurement technology enables researchers to reveal the inherent relation between the structure and optical properties of materials,which is crucial for optimizing material performance and applications in the field of *** this review,the principles and the theoretical foundations of high-pressure time-resolved TA spectroscopy measurement technology will be introduced,and the research advancements in ultrafast dynamics processes of materials under high pressure will be summarized and *** addition,we will expound on the future prospects of time-resolved TA spectroscopy measurement technology to detect the ultrafast dynamic behaviors of materials and complexes under the coregulation of temperature and pressure.

关键词： materials resolved holds

Prediction of Superhard BN_(2) with High Energy Density

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Chinese Physics Letters 2021年第1期38卷 125-130页

作者： Yiming Zhang Shuyi lin Min Zou Meixu Liu Meiling Xu Pengfei Shen Jian Hao yinwei Li Laboratory of Quantum Functional Materials Design and Application School of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhou 221116China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhen 518055China

Considering that pressure-induced formation of short,strong covalent bonds in light-element compounds can produce superhard materials,we employ structure searching and first-principles calculations to predict a new class of boron nitrides with a stoichiometry of BN_(2),which are stable relative to alpha-B and alpha-N_(2) at ambient *** ambient pressure,the most stable phase has a layered structure(h-BN_(2)) containing hexagonal BN layers between which there are intercalated N_(2) *** 25 GPa,a three-dimensional P4_(2)/mmc structure with single N-N bonds becomes the most ***,thermal,and mechanical stability calculations reveal that this structure can be recovered under ambient *** calculated stress-strain relations demonstrate an intrinsic superhard nature with an estimated Vickers hardness of ~43 *** structure has a potentially high energy density of ~4.19 kJ/g.

关键词： ambient structure hexagonal

In situ construction of zinc-rich polymeric solid–electrolyte interface for high-performance zinc anode

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eScience 2023年第4期3卷 118-126页

作者： Kaixuan Xie Kaixin Ren Qinghong Wang Yuxiao lin Fengcan Ma Chuang Sun yinwei Li Xinsheng Zhao Chao Lai School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhouJiangsu 221116PR China Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhouJiangsu 221116PR China

With their excellent reliability and environmental friendliness,zinc-ion batteries(ZIBs)are regarded as potential energy storage ***,their poor cycling durability and low Coulombic effectiveness(CE),driven by dendritic growth and surface passivation on the Zn anode,severely restrict their ***,we describe the in situ construction of a Zn-rich polymeric solid–electrolyte interface(SEI)using poly-acrylic acid(PAA)as an electrolyte *** the one hand,the PAA SEI layer offers evenly distributed nucleation sites and promotes ion transport,hence suppressing dendrite *** the other hand,the SEI layer prevents direct contact between the Zn foil and the electrolyte,thus inhibiting side ***,the robust coordination of PAA with Zn^(2+)and the SEI layer's good adherence to the Zn foil provide long-term pro-tection to the Zn *** a result,symmetric cells and Zn/V_(2)O_(5)cells all deliver prolonged cycle life and superior electrochemical efficiency.

关键词： Zn-rich polymeric SEI Electrolyte additive Dendrite growth Chemical corrosion Zinc-ion batteries

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基于近端梯度的快速字典学习方法的研究

计算机应用研究 2016年第5期33卷 1566-1569,1575页

作者：林家印战荫伟广东工业大学计算机学院广州510086

基于稀疏表示的图像处理技术近年来成为研究热点,多种字典学习算法如K-SVD、OLM(online dictionary learning method)等予以提出,这类算法使用重叠的图像块来构建字典进行稀疏表示,产生了大量稀疏系数,致使计算过缓,且不能确保收敛。针... 详细信息

基于稀疏表示的图像处理技术近年来成为研究热点,多种字典学习算法如K-SVD、OLM(online dictionary learning method)等予以提出,这类算法使用重叠的图像块来构建字典进行稀疏表示,产生了大量稀疏系数,致使计算过缓,且不能确保收敛。针对此问题开展研究,提出了基于近端梯度的快速字典学习算法。该算法结合了多凸优化求解,采用近端梯度算法求解字典学习过程中涉及的优化问题,有效地降低了每次迭代的复杂度,减少了迭代开销,同时能够确保收敛。合成数据上的实验表明,相较于其他经典算法,该算法进行字典学习速度更快,所耗时间较短,获得的字典更好,且在图像稀疏去噪的应用中该算法的去噪效果表现优异。

关键词：字典学习稀疏表示图像去噪近端梯度全局收敛

中国粮食生产与消费能力脆弱性的时空格局及耦合协调性演变

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经济地理 2019年第12期39卷 147-156页

作者：姚成胜殷伟黄琳崔会芳南昌大学中国中部经济社会发展研究中心中国江西南昌330031 南昌大学经济管理学院中国江西南昌330031 南昌大学旅游学院中国江西南昌330031 江西师范大学外国语学院中国江西南昌330022

基于脆弱性理论,构建了我国粮食生产与消费能力脆弱性评价指标体系,采用全局主成分、重心—标准差椭圆模型和耦合协调度模型,分析了2000—2016年我国省域粮食生产与消费能力脆弱性的时空演变及其耦合协调性的变化状况,结果表明:①粮食... 详细信息

基于脆弱性理论,构建了我国粮食生产与消费能力脆弱性评价指标体系,采用全局主成分、重心—标准差椭圆模型和耦合协调度模型,分析了2000—2016年我国省域粮食生产与消费能力脆弱性的时空演变及其耦合协调性的变化状况,结果表明:①粮食生产能力脆弱性呈现出由东南向西北和东北逐步降低,较高脆弱区地域范围明显缩小的时空演变特征,其重心整体向南移动了95.70 km。②粮食消费能力脆弱性呈现由西向东降低的趋势,高脆弱区和较高脆弱区范围大幅缩小的时空演变特征,其重心整体向西北移动了131.55 km。③粮食生产与消费能力脆弱性的耦合协调性呈现由东北部向南,东部沿海省区向中西部,藏、新两地向内陆腹地省区逐步升高的分布格局,两者的耦合协调度由2000年的0.695变化到2016年的0.768。④粮食生产能力能够完全保障粮食消费的地区(类型Ⅰ)绝大部分位于我国藏、新、蒙等边疆地区,以及西北、西南、东北等地,其耦合协调性低的短板在于粮食消费能力过低;基本能够保障粮食消费的地区(类型Ⅱ)大部分属于粮食主产区,其粮食生产与消费能力匹配较好;无法保障粮食消费的地区(类型Ⅲ)绝大部分位于东部沿海的粮食主销区,其耦合协调度低的原因在于粮食生产能力过低而消费能力过高。

关键词：粮食安全粮食生产能力粮食消费能力脆弱性耦合协调性生态环境约束土地播种面积

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大型飞机结构强度试验姿态转换与控制

机床与液压 2024年第4期52卷 56-62页

作者：燕晨耀尹伟杜星田文朋吝继锋中国飞机强度研究所强度与结构完整性全国重点实验室陕西西安710065

针对以往大型飞机姿态转换过程存在潜在的胶布带脱落、局部失稳以及多种提升设备不协调等风险问题,提出一种大型飞机结构强度试验姿态转换与控制方法。通过设计位移提升装置和全浮动支持平台,确保飞机姿态转换系统安全可靠;应用协调加... 详细信息

针对以往大型飞机姿态转换过程存在潜在的胶布带脱落、局部失稳以及多种提升设备不协调等风险问题,提出一种大型飞机结构强度试验姿态转换与控制方法。通过设计位移提升装置和全浮动支持平台,确保飞机姿态转换系统安全可靠;应用协调加载控制系统,提出多点协调的位移提升控制方案,实现飞机姿态平稳转换和精准控制;研究飞机姿态实时测量算法,开发可视化监控系统,实现飞机姿态多维变量实时监控。通过全要素测试,验证了所提方法的合理性。试验结果表明:某大型飞机的姿态转换过程实现了多维度可视化监控,与传统方法相比,效率提升了约35%,可靠性及安全性大幅提升。

关键词：飞机结构强度试验姿态转换与控制协调加载可视化监控