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Malware Evasion Attacks Against IoT and Other Devices: An Empirical Study

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Tsinghua Science and Technology 2024年第1期29卷 127-142页

作者： Yan xu deqiang Li Qianmu Li Shouhuai xu School of Computer Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing 210023China Department of Computer Science University of Colorado Colorado SpringsColorado SpringsCO 80918USA

The Internet of Things(loT)has grown rapidly due to artificial intelligence driven edge *** enabling many new functions,edge computing devices expand the vulnerability surface and have become the target of malware ***,attackers have used advanced techniques to evade defenses by transforming their malware into functionality-preserving *** systematically analyze such evasion attacks and conduct a large-scale empirical study in this paper to evaluate their impact on *** specifically,we focus on two forms of evasion attacks:obfuscation and adversarial *** the best of our knowledge,this paper is the first to investigate and contrast the two families of evasion attacks *** apply 10 obfuscation attacks and 9 adversarial attacks to 2870 malware *** obtained findings are as follows.(1)Commercial Off-The-Shelf(COTS)malware detectors are vulnerable to evasion attacks.(2)Adversarial attacks affect COTS malware detectors slightly more effectively than obfuscated malware examples.(3)Code similarity detection approaches can be affected by obfuscated examples and are barely affected by adversarial attacks.(4)These attacks can preserve the functionality of original malware examples.

关键词： Android malware obfuscation adversarial examples

Primary structure of helix C to helix G of a new retinal protein in ***515

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Chinese Science Bulletin 2000年第12期45卷 1108-1113页

作者： Hui Wang Shuxuan Zhan Qingan Sun deqiang xu Wei Zhao Weida Huang Qingguo Li Fudan Univ Sch Life Sci Shanghai 200433 Peoples R China

The gene fragment encoding the retinal protein from helix C to helix G in a new strain of halobacteria, ***515 has been amplified by PCR method. The nucleotide sequence of this fragment has been determined. The deduced amino acid sequence has been compared with halobium br and other two br-like proteins, ar-1 and ar-2. Results show that those amino acid residues in br, essential for proton pumping and binding to retinal, are conserved. The residue M145 in br may be important for isomerization reaction of retinal.

关键词： halohactcria claret membrane archaerhodopsin PCR sequence.

Effects of thinning and understory removal on water use efficiency of Pinus massoniana:evidence from photosynthetic capacity and stable carbon isotope analyses

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Journal of Forestry Research 2024年第2期35卷 42-53页

作者： Ting Wang Qing xu Beibei Zhang deqiang Gao Ying Zhang Jing Jiang Haijun Zuo Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration Ecology and Nature Conservation InstituteChinese Academy of ForestryBeijing 100091People’s Republic of China College of Agronomy and Agricultural Engineering Liaocheng UniversityLiaocheng 252000People’s Republic of China Department of Forest and Conservation Sciences Faculty of ForestryUniversity of British ColumbiaVancouverBC V6T 1Z4Canada

Understanding the relationship between forest management and water use efficiency(WUE)is important for evaluating forest adaptability to climate ***,the effects of thinning and understory removal on WUE and its key controlling processes are not well understood,which limits our comprehension of the physiological mechanisms of various management *** this study,four forest management measures(no thinning:NT;understory removal:UR;light thinning:LT;and heavy thinning:HT)were carried out in Pinus massoniana plantations in a subtropical region of *** capacity and needle stable carbon isotope composition(δ^(13)C)were measured to assess instantaneous water use efficiency(WUE_(inst))and long-term water use efficiency(WUE_(i)).Multiple regression models and structural equation modelling(SEM)identified the effects of soil properties and physiological performances on WUE_(inst)and WUE_(i).The results show that WUE_(inst)values among the four treatments were ***,compared with the NT stand(35.8μmol·mol^(-1)),WUE_(i)values significantly increased to 41.7μmol·mol^(-1)in the UR,50.1μmol·mol^(-1)in the LT and 46.6μmol·mol^(-1)in HT treatments,largely explained by photosynthetic capacity and soil water *** removal did not change physiological performance(needle water potential and photosynthetic capacity).Thinning increased the net photosynthetic rate(A_n)but not stomatal conductance(g_s)or predawn needle water potential(ψ_(pd)),implying that the improvement in water use efficiency for thinned stands was largely driven by radiation interception than by soil water *** general,thinning may be an appropriate management measure to promote *** WUE to cope with seasonal droughts under future extreme climates.

关键词： Stable carbon isotope Water use efficiency Thinning Understory removal Photosynthetic capacity Needle water potential

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全焊接金属密封热交换器的疲劳特征探索

山东化工 2024年第12期53卷 137-139,142页

作者：黄立龙李治国王保卫安克鹏许德强高海亮兰州兰石换热设备有限责任公司甘肃兰州730000

运用分析软件对全焊接金属密封热交换器进行了疲劳特性分析,通过特殊的分析思路,验证了此种设备在相应压力循环下是否疲劳,以及最易疲劳的位置处于设备的何处。

关键词：全焊接金属密封热交换器模拟分析疲劳特征

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耐高温非规则板式空气预热器整体结构设计及优化探索

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山东化工 2024年第9期53卷 248-251,255页

作者：王治军车生文李治国李明海许德强李东东兰州兰石换热设备有限责任公司甘肃兰州730000

运用解析法和有限元法模拟计算了耐550℃高温的非规则板式空气预热器整体结构的强度,为高温工况下,板式空气预热器结构优化,占地面积更小,更为节省材料提供了一种全新思路。

关键词：耐550℃高温非规则板式空气预热器有限元法解析法

批判的理论化--略论南茜·弗雷泽对正义理论的批判与重构

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教学与研究 2016年第4期 106-112页

作者：许德强洪晓楠大连理工大学哲学系大连理工大学马克思主义学院

本文以南茜·弗雷泽对正义理论进行的批判与重构为研究对象,收集、归纳和整理了其关于正义的批判的主要观点。从理论形成的内在逻辑、主要特征和价值取向等方面,研究分析了其以参与平等为规范性架构,以再分配、承认和政治代表权为维度... 详细信息

本文以南茜·弗雷泽对正义理论进行的批判与重构为研究对象,收集、归纳和整理了其关于正义的批判的主要观点。从理论形成的内在逻辑、主要特征和价值取向等方面,研究分析了其以参与平等为规范性架构,以再分配、承认和政治代表权为维度的正义理论体系。在参照中外学者对南茜·弗雷泽批判的正义理论进行研究所取得成果的基础上,充分肯定了其对正义理论做出的贡献,同时也指出了该理论在建构和适用上存在的局限和不足。

关键词：南茜·弗雷泽正义批判重构

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烷烃和丁二腈高效降解菌混合降解性能研究

同济大学学报（自然科学版） 2007年第8期35卷 1074-1079页

作者：周雪飞张亚雷徐德强曹微寰同济大学长江水环境教育部重点实验室上海200092 复旦大学生命科学学院上海200433 同济大学污染控制与资源化研究国家重点实验室上海200092

将已得到的烷烃高效降解菌C-14-1,C-14-2和丁二腈高效降解菌J-13-1混合,对其在多元基质混合体系中的降解性能进行了研究.结果表明:C-14-1,C-14-2和J-13-1菌株之间无拮抗性,可以混合应用;在培养基混合体系中,由于分解阻遏效应和降解产物... 详细信息

将已得到的烷烃高效降解菌C-14-1,C-14-2和丁二腈高效降解菌J-13-1混合,对其在多元基质混合体系中的降解性能进行了研究.结果表明:C-14-1,C-14-2和J-13-1菌株之间无拮抗性,可以混合应用;在培养基混合体系中,由于分解阻遏效应和降解产物的协同效应,有利于丁二腈的降解而对烷烃降解不利;在腈纶废水中,由于存在一些抑制因素,使混合菌的降解能力有所下降.废水中烷烃质量浓度低,烷烃降解菌不能发挥其高效的降解作用,丁二腈质量浓度较大,降解效果明显,9 h降解率可达到100%;腈纶废水经混合菌9 h处理后,CODCr去除率仅为29%,说明实际废水是个很复杂的体系,仅依靠个别高效菌株难以达到理想的整体处理效果,必须构建更多种类的具有协同作用的高效菌群,才能在实际应用中取得满意的结果.

关键词：烷烃丁二腈降解菌多元基质混合体系

Riverine sulfate sources and behaviors in arid environment,Northwest China:Constraints from sulfur and oxygen isotopes

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Journal of Environmental Sciences 2024年第3期137卷 716-731页

作者： Yifu xu Wenjing Liu Bing xu Zhifang xu Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

The fate of riverine sulfate ion (SO_(4)^(2-)) and its environmental effects in arid environment are difficult to evaluate due to its complicated sources and strongly coupled behaviors with water cycle which is significantly modified by *** understand the sulfur cycle in aquatic systems in arid environment,the chemical and sulfur and oxygen isotopic compositions (δ^(34)S_(SO4)and δ^(18)O_(SO4)) of major rivers around the Badain Jaran Desert,northwestern China,were *** rivers had averaged SO_(4)^(2-)content at 1336μmol/L,over 10times higher than the global *** δ^(34)S_(SO4)and δ^(18)O_(SO4)values ranged from-5.3‰to+11.8‰and+1.6‰to+12.8‰,*** end-member analysis and the inverse model showed that riverine sulfate was mainly derived from evaporites dissolution (0-87%),sulfide oxidation (13%-100%) and precipitation (0-33%),indicating heterogeneity in sulfur sources and behaviors along the river drainage with the lithology variations and climate *** isotopic tools combining with hydro-chemistry compositions could be applied to reveal sulfur cycle in arid *** on the calculation,sulfide oxidation plays the primary role in the headwater and upstream in the Qilian-Mountains area,where sulfide is widely *** the proportion of evaporites dissolution contributing to riverine sulfate is much higher in downstream in a drier ***,less precipitation and higher temperature can lead to more intensive evaporation,affecting the process of sulfide oxidation and enhancing the rates of evaporites dissolution and sulfate precipitation in the basin.

关键词： Sulfur and oxygen isotopes Source apportionment Inverse model Arid environment Inland rivers Northwestern China

Laboratory evaluation of high-friction thin overlays for pavement preservation

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Frontiers of Structural and Civil Engineering 2024年第6期18卷 936-948页

作者： Ouming xu Rentao xu Lintong JIN School of Highway Chang’an UniversityXi’an 710064China School of Materials Science and Engineering Chang’an UniversityXi’an 710061China

Traditional asphalt concrete(AC)and stone matrix asphalt(SMA),which are used as thin asphalt overlays,are common maintenance strategies to enhancing ride quality,skid resistance,and ***,several studies have used a novel asphalt mixture known as a high-friction thin overlay(HFTO)to improve surface ***,it remains uncertain whether the laboratory properties of HFTO differ significantly from those of conventional *** study aims to evaluate the laboratory properties of HFTO mixtures and compare them with those of AC and *** mixtures with nominal maximum size of 9.5 mm were produced in the laboratory,and performance tests were conducted,including wheel tracking test,low temperature flexural creep test,moisture susceptibility test,Cantabro Abrasion Test,Marshall Test,sand patch test,British pendulum test,and indoor tire-rollingdown *** results showed that the HFTO exhibited a lower tire/pavement noise than the AC and ***,HFTO had superior high-temperature stability,larger macro texture,and higher skid resistance in comparison to those of AC,but lower than those of ***,HFTO mixtures may be considered a suitable replacement for traditional AC mixtures in regions where skid resistance and noise reduction are concerns.

关键词： road engineering pavement maintenance high friction thin overlay performance skid resistance tire/pavement noise