Encounter Risk Analysis of Rainfall and Tide in Shenzhen Based on Copula Function by SHI Yunyun, YAO Hangbin, WAN Donghui, ZHENG Xinqian

“…The disasters of encounter of extreme rainstorm and high tide level will aggravate the flood in coastal cities.In order to explore the impact of the encounter of rainstorm and tide on flood control and drainage in coastal cities,based on the annual maximum 1 day rainfall and its corresponding tide level data of Chiwan Station in Shenzhen from 1967 to 2018,the Copula function is used to construct a joint distribution model of annual maximum 1 day rainfall and its corresponding tide level,and the co-occurrence risk,the flood control risk,the condition risk and the combination risk of rain and tide in Shenzhen are calculated and analyzed.The results show that the risk of the encounter of rain and tide in Shenzhen is small,and the co-occurrence and combination risk probability of rainfall whose return period greater than 100 years and tidal level whose return period greater than 200 years are only 0.12% and 0.09%.The probability of the occurrence of rainfall or tide exceeding the standard magnitude is 1.09%,and its return period is less than 100 years.When the rainfall exceeds the standard magnitude,the probability of encountering an over-standard tide level is greater,with a probability of 12.33%.At the same time,with the increase of rainfall,the risk will also increase.Therefore,in the planning and design of flood and tide prevention and drainage in cities,the focus should be on attention and prevention.…”
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Probabilistic Assessment of Degree of Bending in Tubular X-Joints of Offshore Structures Subjected to Bending Loads by Hamid Ahmadi, Amirreza Ghaffari

“…The DoB exhibits considerable scatter calling for greater emphasis in accurate determination of its governing probability distribution which is a key input for the fatigue reliability analysis of a tubular joint. …”
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A video steganalysis method based on coding cost variation by Jianyi Liu, Cong Zhang, Ru Zhang, Yi Li, Jie Cheng

“…Aiming at the problems existing in existing steganalysis algorithms, this article proposes Motion Vector Coding Cost Change video steganalysis features based on Improved Motion Vector Reversion-Based features and Subtractive Probability of Coding Cost Optimal Matching features based on Subtractive Probability of Optimal Matching features from the perspective of the change of coding cost. …”
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STUDY ON RELIABILITY DISTRIBUTION MODELS OF FATIGUE LIFE OF ANTI-VIBRATION RUBBER MATERIALS (MT) by WANG XiaoLi, PENG XiaoYang, LIU XiangNan, DUAN XiaoCheng, XU Wei

“…Based on the test data of uniaxial tensile fatigue experiment of rubbers, the cumulative distribution function and probability density function of residual fatigue life corresponding to two typical probability distribution models of three parameters Weibull distribution（3 PWD） and logarithmic normal distribution（LND） were derived and applied to the prediction of residual life reliability, in order to determine the minimum required under different probability distribution model of sample number and working condition number. …”
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Analysis of Floods in Xijiang River and Beijiang River Based on Copula Function by REN Chengjun

“…It is of great significance to analyze the flood situation of the Xijiang River and Beijiang River for peak shifting regulation of reservoirs in the basin and flood control and disaster reduction in the Pearl River Delta.Therefore,Gamma distribution and Von Mises distribution are used to fit the flood magnitude and occurrence time of annual maximum flood,respectively.The Copula function is used to construct a joint distribution of floods in Xijiang River and Beijiang River,and the possibility of floods in Xijiang River and Beijiang River is analyzed.The results show that the probability of simultaneous occurrence of major floods in Xijiang River and Beijiang River is extremely small.When Shijiao Station in Beijiang River experiences floods at a level of 5,10,20,50,100,and 200 a,respectively,the probability of occurrence of floods with the same frequency in Gaoyao Station Xijiang River is 0.345 0,0.200 3,0.108 5,0.046 6,0.023 7,and 0.012 0,respectively.The probability of floods in the two rivers is the highest in early June.As the flood magnitude increases,the risk of flood occurrence decreases.The probability of floods at a level of 5 a in the two rivers in early June is 1.32×10^-3,and that of floods at a level of 200 a is only 1.17×10^-6.…”
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Performance Improvement for Single-Photon LiDAR with Dead Time Selection by Lei Feng, Fenglin Wang, Meng An, Qiang Zhang

“…The distance measurement and the detection probability are the critical performance for LiDAR. …”
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Reservicing some customers in M/G/1 queues under three disciplines by M. R. Salehi-Rad, K. Mengersen, G. H. Shahkar

“…For each discipline, we find the probability generating function (p.g.f.) of the steady-state size of the system at the moment of departure of the customer in the main queue, the mean busy period, and the probability of the idle period.…”
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FDR coding and decoding algorithm for reliable transmission in underwater acoustic network by Lijuan WANG, Xiujuan DU, Chong LI

“…By analyzing the shortcomings of RLT coding and decoding algorithm,a filtering dimension reduction (FDR) algorithm was proposed,which eliminated the waiting time of the traditional decoding algorithm and achieves fast decoding.In addition,XOR operation between encoded packages effectively increased the number of one-degree encoded packages,and improved decoding probability while reducing transmission delay.An optimized degree distribution function for FDR decoding algorithm was proposed,which increased the proportion of two-degree,three-degree and four-degree encoded packages,further increased the probability of one-degree packet,so that speeded up the decoding progress.Simulation results with NS3 show that the decoding success probability of FDR algorithms higher than RLT algorithm.…”
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Differential fault analysis on EMV application cryptogram by Qian PENG, Zeng-ju LI, Ru-hui SHI

“…The process of application cryptogram in EMV was researched and dummy bits in session key were found.Based on the session key’s dummy bits and compressive property of DES’s Sbox,much information of the application cryptogram master key was got by using safe-error attack.The differential fault attack model and steps to implement the attack were proposed,two key factors(the probability of generating wrong key and the probability of collision happening) affecting an attacking result were analyzed.The theoretical result and simulation of the attack were given.The experiment results show that the two keys could be distinguished in a real attacking when the dif-ference of two key’s collision probability was bigger than 0.003 5.The dummy bits in the key will increase the dif-ference and make distinguishing easier.Finally,several countermeasures against the attack were proposed.…”
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STATISTICAL MODEL UPDATING AND STRUCTURAL PROBABILISTIC DAMAGE IDENTIFICATION BASED ON BAYESIAN METHOD by GAN Lu, CHEN Hui

“…By comparing the probability density functions of the identified parameters in the two states, the probability and degree of structural damage were finally obtained. …”
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Performance analysis of multi-relay DF cooperative communication system based on directional antenna by Mingwei WANG, Huisheng ZHANG, Lixin LI, Lifeng HE

“…In order to achieve reliable communication in multi-relay cooperative communication，the directional antenna combining multi-relay cooperative communication system and optimal relay selection decode-and-forward cooperative strategy was presented.Firstly，the theoretical closed form of outage probability of the communication system using directional antenna operating in the three modes of DT-DR，DT-OR and OT-OR were presented.Then for three kinds mode，the collaboration communication system interrupt probability and signal-to-noise ratio，the number of relay nodes，the antenna gain channel fading efficiency and relationship between the channel capacity were analyzed in numerical simulation.These findings reveal that excellent performance of cooperative communication system with directional antennas could be achieved such as smaller outage probability and improved by best relay nodes and optimal power allocation coefficient.…”
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An optimization coverage algorithm with controllable dynamic parameters by Chuan LI, Xuejun LI

“…The energy consumption and coverage is a fundamental problem in the field of wireless sensor networks,which is also a priority issue.Based on the isomorphism of the sensor nodes,an optimized coverage algorithm with controllable dynamic parameters（OCCDP）was presented.Firstly,it gave the solution of the largest seamless coverage probability under the joint coverage of three nodes.Secondly,it gave the solving method of the sensor nodes coverage quality expectation in monitoring area and compares to neighbor nodes coverage probability determination method.When there was a redundant coverage,it gave the process of calculation of coverage probability when any sensor node was in the condition of redundant nodes coverage.Finally,through the comparison of the simulation with other algorithms in terms of the coverage quality and the network lifetime,it can be concluded that the average performance can upgrad to 11.02% and 13.27%,which proves the effectiveness and feasibility of the algorithm.…”
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Research on differential properties of Keccak-like nonlinear transform by Qian-nan LI, Yun-qiang LI, Shu-jing JIANG, Yao LU

“…By analyzing the nonlinear transformation in Keccak,n-gram Keccak-like nonlinear transform model was proposed firstly,and the differential properties of this kind of transformation was studied.They are proved that to the n-gram Keccak-like nonlinear transform,the differential transition probability about cycle shift transform is unchanged,and nonzero differential transition probabilities are equal when the input difference was confirmed.The range of the dif-ferential transition probability was calculated when it wasn't 0 and 1.By analyzing the Boolean expressions of the output difference,the differential construction for largest nontrivial and smallest nonzero differential transition probability were obtained.At the end,one correlation between the differential probabilities of adjacent variable in n-gram Keccak-like nonlinear transform was given.…”
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Properties in Stage-Structured Population Models with Deterministic and Stochastic Resource Growth by Tin Nwe Aye, Linus Carlsson

“…Modelling population dynamics in ecological systems reveals properties that are difficult to find by empirical means, such as the probability that a population will go extinct when it is exposed to harvesting. …”
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NON-PROBABILISTIC RELIABILITY ANALYSIS METHOD BASED ON INTERVAL ANALYSIS by MA DongJuan, LIU BoYing, LI LingLing

“…when uncertainty information is not enough that it is so difficult to get the parameter probability model,the nonprobabilistic reliability analysis method could be taken into accout. …”
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On the Degree of the GCD of Random Polynomials over a Finite Field by Kui Liu, Meijie Lu

“…Firstly, we compute the probability distribution of the degree of the gcd of random and monic polynomials with fixed degree over Fq. …”
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Investigation of Behavior on Solutions of Lane–Emden Complex Differential Equations by a Random Differential Transformation Method by Mehmet Merdan, Merve Merdan, Rıdvan Şahin

“…The probability characteristics obtained are shown graphically with the help of the MAPLE program.…”
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Copula-Based Probabilistic Hazard Assessment Model for Debris Flow Considering the Uncertainties of Multiple Influencing Factors by Mi Tian, Yuan Shen, Long Fan, Xiao-Tao Sheng

“…The proposed probabilistic model is also used to develop the exceedance probability charts of quantities for a specific debris-flow basin. …”
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An Exponential Active Queue Management Method Based on Random Early Detection by Hussein Abdel-Jaber

“…In this paper, the RED-Exponential Technique (RED_E) is proposed to deal with this issue by dropping arriving packets in an exponential manner without utilizing the maximum packet dropping probability. Simulation tests aiming to contrast E_RED with other Active Queue Management (AQM) methods were conducted using different evaluation performance metrics including mean queue length (mql), throughput (T), average queuing delay (D), overflow packet loss probability (PL), and packet dropping probability (DP). …”
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Physical layer security of full-duplex relay-assisted D2D networks under outdated CSI by Jingjie SHEN, Guangqiu LI, Yancui LUO, Huizhi LIU

“…The relay aided device to device (D2D) network can improve the spectrum efficiency of D2D users and the physical layer security of cellular user (CU) by sharing spectrum with the cellular network.To further improve their performance, transmit antenna selection can be used at the base station and the relay node of the D2D link, and full duplex technology can be used in the relay node.However, due to the feedback delay and mobility, the channel state information (CSI) used for the antenna selection of cellular link and all D2D links may be outdated.For the physical layer security and reliability in the above scenario, security model of a full duplex relay aided D2D network was proposed in the presence of active eavesdropping and outdated CSI, in which the base station and relay nodes both used transmit antenna selection.The closed-expressions for outage probability, ergodic capacity, probability of non-zero secrecy capacity, secure outage probability, asymptotic secure outage probability of relay aided D2D networks were derived.The numerical calculation and simulation results show that the more the number of base station transmit antennas and relay jamming antennas are, the better the CU security performance is.The outdated CSI will deteriorate the outage and security performance of CU.…”
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