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Evicting and filling attack for linking multiple network addresses of b.tcoin nodes

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Cyb.rsecurity 2024年第3期7卷 49-68页

作者： Huashuang yang Jinqiao Shi Yue Gao xuebin Wang Yanwei Sun Ruisheng Shi Dongb.n Wang School of Cyb.rspace Security Bejing University of Posts and TelecommunicationsBeijingChina Tsinghua University Bejing 100084China Institute of Information Engineering Chinese Academy of SciencesBeijingChina

b.tcoin is a decentralized P2P *** supports users to use pseudonyms instead of network addresses to send and receive transactions at the data layer,hiding users'real network *** transaction tracing attack cuts through the network layer to directly associate each transaction with the network address that issued it,thus revealing the sender's network *** this attack can b. mitigated b. b.tcoin's network layer privacy *** b.tcoin protects the unlinkab.lity of b.tcoin addresses and there may b. a many-to-one relation-ship b.tween addresses and nodes,transactions sent from the same node via different addresses are seen as com-ing from different nodes b.cause attackers can only use addresses as node *** this paper,we proposed the evicting and flling attack to expose the correlations b.tween addresses and cluster transactions sent from different addresses of the same *** attack exploited the unisolation of b.tcoin's incoming connection processing *** particular,an attacker can utilize the shared connection pool and deterministic connection eviction strategy to infer the correlation b.tween incoming and evicting connections,as well as the correlation b.tween releasing and flling *** on inferred results,different addresses of the same node with these connections can b. linked together,whether they are of the same or different network *** designed a multi-step attack procedure,and set reasonab.e attack parameters through analyzing the factors that affect the attack effciency and *** mounted this attack on b.th our self-run nodes and multi-address nodes in real b.tcoin network,achieving an aver-age accuracy of 96.9% and 82%,***,we found that the attack is also applicab.e to Zcash,Litecoin,Dogecoin,b.tcoin Cash,and *** analyzed the cost of network-wide attacks,the application scenario,and proposed countermeasures of this attack.

关键词： Security and privacy b.tcoin Address linking

Evaluation of a laying-hen tracking algorithm b.sed on a hyb.id support vector machine

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Journal of Animal Science and b.otechnology 2017年第1期8卷 226-235页

作者： Cheng Wang Hongqian Chen xuebin Zhang Chaoying Meng College of Information and Electrical Engineering China Agricultural University Beijing 100083 China Network Center China Agricultural University Beijing 100083 China College of Water Resources and Civil Engineering China Agricultural University Beijing 100083 China

b.ckground： b.havior is an important indicator reflecting the welfare of animals. Manual analysis of video is the most commonly used method to study animal b.havior. However, this approach is tedious and depends on a sub.ective judgment of the analysts. There is an urgent need for automatic identification of individual animals and automatic tracking is a fundamental part of the solution to this ***： In this study, an algorithm b.sed on a Hyb.id Support Vector Machine（HSVM） was developed for the automated tracking of individual laying hens in a layer group. More than 500 h of video was conducted with laying hens raised under a floor system b. using an experimental platform. The experimental results demonstrated that the HSVM tracker outperformed the Frag（fragment-b.sed tracking method）, the TLD（Tracking-Learning-Detection）,the PLS（ob.ect tracking via partial least squares analysis）, the Mean Shift Algorithm, and the Particle Filter Algorithm b.sed on their overlap rate and the average overlap ***： The experimental results indicate that the HSVM tracker achieved b.tter rob.stness and state-of-theart performance in its ab.lity to track individual laying hens than the other algorithms tested. It has potential for use in monitoring animal b.havior under practical rearing conditions.

关键词： Computer vision Laying hens Locomotion tracking Support vector machine

Anomalous Hall effect and electronic correlation in a spin-reoriented kagome antiferromagnet LuFe_(6)Sn_(6)

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Chinese Physics b 2024年第10期33卷 46-51页

作者： Meng Lyu yang Liu Shen Zhang Junyan Liu Jinying yang Yib. Wang Yiting Feng xuebin Dong b.nb.n Wang Hongxiang Wei Enke Liu b.ijing National Lab.ratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Ningb. Institute of Materials Technology&Engineering Chinese Academy of SciencesNingbo 315201China

The kagome lattice system has b.en identified as a fertile ground for the emergence of a numb.r of new quantumstates,including superconductivity,quantum spin liquids,and topological electronic *** has attracted significantinterest within the field of condensed matter ***,we present the ob.ervation of an anomalous Hall effect in aniron-b.sed kagome antiferromagnet LuFe_(6)Sn_(6),which implies a non-zero b.rry curvature in this *** means ofextensive magnetic measurements,a high Neel temperature,T_(N)=552 K,and a spin reorientation b.havior were identifiedand a simple temperature-field phase diagram was ***,this compound was found to exhib.t a largeSommerfeld coefficient ofγ=87 mJ·mol^(-1)·K^(-2),suggesting the presence of a strong electronic correlation *** indicates that LuFe_(6)Sn_(6)is an intriguing compound that may exhib.t magnetism,strong correlation,and topologicalstates.

关键词： kagome lattice anomalous Hall effect magnetism electronic correlation

Sources and migration path of chemical compositions in a karst groundwater system during rainfall events

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Chinese Science b.lletin 2013年第18期58卷 2488-2496页

作者： yang PingHeng YUAN DaoXian YE XuChun XIE ShiYou CHEN xuebin LIU ZiQi School of Geographical Sciences Key Laboratory of Eco-environments in Three Gorges Reservoir Ministry of Education Southwest University The Karst Dynamics Lab.ratory Ministry of Land and Resources Institute of Karst Geology Chinese Academy of Geological Sciences

Physical and chemical dynamics at Jiangjia Spring (JJS), the outlet of the Qingmuguan karst groundwater system in Chongqing, were monitored in situ during rainfall events to acquire a series of high-resolution data. Principal component analysis (PCA) was employed to identify the sources of chemical compositions in the karst groundwater. The coefficients of variations (CVs) of the physical and chemical data of JJS were utilized to interpret the migration path of the chemical compositions. The results showed that water-rock interactions, agricultural activities, and soil erosion were the main sources of the groundwater chemical compositions. Ions of potassium, sodium, nitrate, chloride and phosphate from agricultural activities together with ions of calcium, magnesium, strontium and b.carb.nate derived from carb.nate dissolution appear to b. stored and regulated b. the karst unsaturated zone in features such as fissures, pores and solution cracks. The concentrations of the ions remained relatively stab.e and they showed low CVs owing to their migration b. diffuse flow to recharge the underground river. In contrast, concentrations of ions such as total iron, total manganese and aluminum from soil erosion were unstab.e and showed high CVs owing to their migration b. overland flow to recharge the underground river directly via sinkholes. During heavy rainfall events, the nutrients from agricultural activities and sediment from soil erosion could quickly impair the aquatic ecosystem and pose serious threats to water quality. Therefore, it is necessary to reinforce management of the ecological system for b.tter control of the influx of mass nutrients into the karst aquifer system.

关键词：地下水系统水化学成分迁移路径事件岩溶降雨水生生态系统化学组合物

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Optimization of different intensities of exercise preconditioning in protecting exhausted exercise induced heart injury in rats

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Sports Medicine and Health Science 2021年第4期3卷 218-227页

作者： Zheng Ping Weijia Qiu Mei yang Xiaoli Zhang Dongying Wang Peng Xu Ziwen Wang xuebin Cao Department of Cardiology and Nephrology Hospital of the 82nd Group Army of PLABaoding071000China

This study was to optimize the exercise preconditioning(EP)intensity in protecting from exhaustive exercise-induced cardiac injury(EECI).A total of 98 male Sprague-Dawley rats were divided into 7 groups(n=14):the control group(C),the exhaustive exercise group(EE)and the EP+EE groups,which include the V10(53.0%VO_(2max)),V15(58.4%VO_(2max)),V20(67.0%VO_(2max)),V26(74.0%VO_(2max))and V30(80.0%VO_(2max))*** the C group,the other groups were sub.ected to treadmill *** serum contents of N terminal pro b.type natriuretic peptide(NT-prob.P)and cardiac troponin I(cTn-I)were detected b. the enzyme-linked immunosorb.nt assay method,ECG was recorded,heart function was detected b. pressure volume catheter and the activities of mitochondrial electron transfer pathway(ET pathway)complexesⅠ,ⅡandⅣwere measured b. high-resolution respiration *** to the EE group,the EP groups have shown decrease of NT-prob.P and cTn-I,improvement of mitochondrial respiratory function and car-diac *** to other EP groups,the V26 group has shown significant decrease of myocardial enzymes and improvement of mitochondrial *** correlation analysis showed the EP effect was proportional to EP intensity in the range of 53.0%VO_(2max)-74.0%VO_(2max).High intensity and long duration of exhaustive exercise caused cardiac injury and EP could decrease serum level of NT-prob.P and cTn-I,improve electrical derangement and the left ventricular function,and raise the activities of ET pathway complexesⅠ,ⅡandⅣ.The protection of EP on EECI was improved as the EP intensity was increased from 53.0%VO_(2max)to 74.0%VO_(2max)and when EP intensity was 74.0%VO_(2max),the effect was the most ob.ious among all the setting EP groups.

关键词： Exercise preconditioning Exhaustive exercise-induced cardiac injury Mitochondrial respiratory function

Magnetic and microwave ab.orption properties of Ni_(1-x)Zn_xFe_2O_4 nanocrystalline synthesized b. sol-gel method

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Science China(Technological Sciences) 2013年第1期56卷 13-19页

作者： ZHANG Min LIU QiangChun ZI ZhenFa DAI YuQiang ZHU xuebin SUN YuPing DAI JianMing Key Lab.ratory of Materials Physics Institute of Solid State PhysicsChinese Academy of Sciences School of Physics and Electronics Information Huaibei Normal University

Ni1-xZnxFe2O4(0≤x≤1,in steps of 0.1) nanocrystallines were synthesized b. sol-gel *** doping effects of zinc on structural,magnetic and microwave ab.orption properties were investigated in detail.X-ray diffraction(XRD) results show that all the samples are single-phase spinel *** magnetic and microwave ab.orption properties are strongly dependent on the zinc content,which can b. understood in terms of the cations redistrib.tion in spinel tetrahedral and octahedral sites with the increase of zinc *** magnetic measurement shows the antiferromagnetic nature of the samples for x=0.9 and x=*** saturation magnetization reaches the maximum of 3.35μb.*** x=*** optimal reflection loss(RL) of-29.6 db.is found at 6.5 GHz for an ab.orb.r thickness of 5 *** RL values exceeding 10 db.are ob.ained for the ab.orb.r in the range of 3.9-8.9 *** Ni1-xZnxFe2O4 nanocrystallines may b. attractive candidates for electromagnetic wave ab.orption materials.

关键词： Ni-Zn ferrite magnetic measurement microwave ab.orption properties

The circular RNA circINPP4b.acts as a sponge of miR-30a to regulate Th17 cell differentiation during progression of experimental autoimmune encephalomyelitis

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Cellular & Molecular Immunology 2021年第9期18卷 2177-2187页

作者： Jingjing Han Wei Zhuang Wanhua Feng Fuxing Dong Fang Hua Ruiqin Yao xuebin Qu Department of Cell b.ology and Neurob.ology Xuzhou Key Laboratory of NeurobiologyXuzhou Medical UniversityXuzhouJiangsuChina Department of Neurology Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsuChina Shanghai Key Lab.ratory of Signaling and Disease Research School of Life Sciences and TechnologyTongji UniversityShanghaiChina Institute of Neurological Diseases of Xuzhou Medical University XuzhouJiangsuChina

Circular RNAs(circRNAs)regulate gene expression and participate in various b.ological and pathological ***,little is known ab.ut the effects of specific circRNAs on T helper cell 17(Th17)differentiation and related autoimmune diseases,such as multiple sclerosis(MS).Here,using transcriptome microarray analysis at different stages of experimental autoimmune encephalomyelitis(EAE),we identified the EAE progression-related circINPP4b.which showed upregulated expression in Th17 cells from mice with EAE and during Th17 differentiation in *** of circINPP4b.inhib.ted Th17 differentiation and alleviated EAE,characterized b. less demyelination and Th17 infiltration in the spinal ***,circINPP4b.served as a sponge that directly targeted miR-30a to regulate Th17 ***,circINPP4b.levels were associated with the developing phases of clinical relapsing-remitting MS *** results indicate that circINPP4b.plays an important role in promoting Th17 differentiation and progression of EAE b. targeting miR-30a,which provides a potential diagnostic and therapeutic target for Th17-mediated MS.

关键词： Circular RNA Multiple sclerosis Experimental autoimmune encephalomyelitis T helper cell miR-30a

Assessment of pollution of potentially harmful elements in soils surrounding a municipal solid waste incinerator, China

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Frontiers of Environmental Science & Engineering 2016年第6期10卷 129-139页

作者： Ying Han Huiting Xie Wenb.n Liu Haifeng Li Mengjing Wang xuebin Chen Xiao Liao Nan Yan State Key Lab.ratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Beijing 100085 China University of Chinese Academy of Sciences Beijing 100049 China Division of Environmental Management & Policy School of Environment Tsinghua University Beijing 100084 China

We assessed the contamination levels of Mn, Zn, Cr, Cu, Ni, Pb. As and Hg and the risks posed b. these potentially harmful elements in top-soils around a municipal solid waste incinerator （MSWI）. We collected 20 soil samples, with an average pH of 8.1, and another fly ash sample emitted from the MSWI to investigate the concentrations of these elements in soils. We determined the concentrations of these elements b. inductively coupled plasma-optical emission spectrometer （ICP-OES）, except for Hg, which we measured b. AF-610b.atomic fluorescence spectrometer （AFS）. We assessed the risks of these elements through the use of geoaccumulation index （/geo）, potential ecological risk index （R/）, hazard quotient （HQi） and cancer risk （Riski）. The results showed that concentrations of potentially harmful elements in soil were influenced b. the wind direction, and the concentrations of most elements were higher in the area northwest of the MSWI, compared with the area southeast of the incinerator, with the exception of As; these results were in accordance with those results acquired from our contour maps. According to the I^o values, some soil samples were clearly polluted b. Hg emissions. However, the health risk assessment indicated that the concentrations of Hg and other elements in soil did not pose non-carcinogenic risks to the local populations. This was also the case for the carcinogenic risks posed b. As Cr and Ni. The carcinogenic risk posed b. As was higher in the range 6.49 × 10 -9.58 × 10 -6, b.t this was still considered to b. an acceptab.e level of risk.

关键词： Soil Potentially harmful elements Contamination Kriging interpolation Risk assessment Wind direction

Reinforcement learning b.sed dynamic distrib.ted routing scheme for mega LEO satellite networks

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Chinese Journal of Aeronautics 2023年第2期36卷 284-291页

作者： Yixin HUANG Shufan WU Zeyu KANG Zhongcheng MU Hai HUANG Xiaofeng WU Andrew Jack TANG xuebin CHENG School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China School of Astronautics Beihang UniversityBeijing 100191China School of Aerospace Mechanical and Mechatronic EngineeringThe University of SydneyCamperdown 2006Australia X-Lab.ratory The Second Academy of China Aerospace Science and Industry CorporationBeijing 100854China

Recently,mega Low Earth Orb.t(LEO)Satellite Network(LSN)systems have gained more and more attention due to low latency,b.oadb.nd communications and glob.l coverage for ground *** of the primary challenges for LSN systems with inter-satellite links is the routing strategy calculation and maintenance,due to LSN constellation scale and dynamic network topology *** order to seek an efficient routing strategy,a Q-learning-b.sed dynamic distrib.ted Routing scheme for LSNs(QRLSN)is proposed in this *** achieve low end-toend delay and low network traffic overhead load in LSNs,QRLSN adopts a multi-ob.ective optimization method to find the optimal next hop for forwarding data *** results demonstrate that the proposed scheme can effectively discover the initial routing strategy and provide long-term Quality of Service(QoS)optimization during the routing maintenance *** addition,comparison results demonstrate that QRLSN is superior to the virtual-topology-b.sed shortest path routing algorithm.

关键词： LEO satellite networks Mega constellation Multi-ob.ective optimization Routing algorithm Reinforcement learning