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Consortium Chain Consensus Vulnerability and Chain Generation Mechanism

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Computers, Materials & Continua 2023年第11期77卷 2505-2527页

作者： Rui qiao hi dong School of Computer Science and Technology Zhoukou Normal UniversityZhoukou466001China

Effectively identifying and preventing the threat of Byzantine nodes to the security of distributed systems is a challenge in applying consortium chains.Therefore,this paper proposes a new consortium chain generation model,deeply analyzes the vulnerability of the consortium chain consensus based on the behavior of the nodes,and points out the effects of Byzantine node proportion and node state verification on the consensus process and system security.Furthermore,the normalized verification node aggregation index that represents the consensus ability of the consortium organization and the trust evaluation function of the verification node set is derived.When either of the two is lower than the threshold,the consortium institution or the verification node set members are dynamically adjusted.On this basis,an innovative consortium chain generation mechanism based on the Asynchronous Binary Byzantine Consensus Mechanism(ABBCM)is proposed.Based on the extended consortium chain consensus mechanism,a certain consensus value set can be combined into multiple proposals,which can realize crossdomain asynchronous message passing between multi-consortium chains without reducing the system’s security.In addition,experiments are carried out under four classical Byzantine Attack(BA)behaviors,BA1 to BA4.The results show that the proposed method can obtain better delay than the classical random Byzantine consensus algorithm Coin,effectively improving the consensus efficiency based on asynchronous message passing in the consortium chain and thus meeting the throughput of most Internet of Things(IoT)applications.

关键词： Consortium chain Byzantine consensus generation mechanism Internet of Things consensus vulnerability

Analytical configuration uncertainty propagation of geocentric interferometric detection constellation

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Astrodynamics 2023年第3期7卷 271-284页

作者： dong qiao Xingyu Zhou Xiangyu Li School of Aerospace Engineering Beijing Institute of TechnologyBeijing100081China

Long-term configuration stability is essential for an interferometric detection constellation(IDC),which is closely related to initial uncertainty.Therefore,it is vital to evaluate the uncertainty and characterize the configuration stability.In this study,an analytical method was developed for the configuration uncertainty propagation of a geocentric triangular IDC.The angular momentum and the argument latitude were found to be significantly affected by the initial uncertainty and were selected as the core variables.By averaging the perturbation in one revolution,an analytical solution was proposed for propagating the core orbital elements in one revolution.Subsequently,the analytical solution of the orbit elements during the mission period is obtained by multiplying the solutions in iterative revolutions.The relationship between the selected orbital elements and the configuration stability parameters was established using an analytical solution.The effects of the initial uncertainty in different directions on the configuration and stable domains were studied.Simulations show that the developed method is highly efficient and accurate in predicting the configuration stability.The relative error with respect to the Monte Carlo simulations was less than 3%with a time consumption of 0.1%.The proposed method can potentially be useful for constellation design and stability analysis.

关键词： geocentric interferometric detection constellation(IDC) configuration stability configuration uncertainty propagation stable parameters

Numerical simulation of mesoscopic cracking of cement-treated base material based on random polygon aggregate model

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Journal of Traffic and Transportation Engineering(English Edition) 2023年第3期10卷 454-468页

作者： qiao Dong Xiaokang Zhao Xueqin Chen Jiawei Yuan Wei Hu Ahmad Jahanzaib School of Transportation Southeast UniversityNanjing 211189China National Demonstration Center for Experimental Road and Traffic Engineering Education Nanjing 211189China Department of Civil Engineering Nanjing University of Science and TechnologyNanjing 210094China Biotechnology Engineeringand Skilled Technologies DivisionWake Technical Community CollegeRaleighNC 27603USA

Cracking failure of cement-treated base(CTB)has always been the concern of highway constructors.Mesoscale cracking analysis is an important means to study the damage degradation mechanism,which is difficult to be characterized by experimental techniques alone.The objective of this paper is to develop a random aggregate modelling method to simulate the mesoscopic cracking of CTB material.A minimum rectangle area method was proposed to calculate the polygon aggregate size,which is closer to the sieving analysis than the average radius method.A buffer zone method was proposed to determine the distance between randomly generated polygon aggregates.Based on the proposed random algorithm,finite element method(FEM)was adopted to build the mesoscopic model of CTB including aggregate,mortar,interfacial transition zone(ITZ)and air voids.Laboratory tests were conducted to validate the numerical model.Then the sensitivity analyses were conducted to study the influencing factors on cracking behavior.The simulation results indicate that the higher aggregate content and the finer gradation lead to the increase of ITZ,thus reducing the cracking resistance of the CTB material.Low porosity content is able to significantly reduce the stress concentration and thus improves the cracking resistance.The research results of this paper could be used to guide the crack resistant design of CTB material.

关键词： Cement-treated base Random aggregate Mesoscopic structure Sensitivity analysis Finite element method

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宝水(节选)

Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2023年第4期17卷 335-340页

作者： qiao Ye Beijing Writers Association Beijing 100031 China

"Dates ripen in July,pears in August,and persimmons in September."The months in this phrase refer to the lunar calendar.At times,however,we follow the solar calendar.For example,"The breeze at the Start of Autumn reddens hawthorns,and the White Dew indicates the harvest of walnuts."Hawthorns and dates ripen earlier than other fruits,well explaining these two lines.Villagers start to pick hawthorns after the Start of Autumn,as I once did with Xiumei.Picking hawthorns requires certain techniques.

关键词： Village harvest earlier

Inertial Viscosity Iterative Method for Solving Pseudo-monotone Variational Inequality Problems and Fixed Point Problems

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Acta Mathematica Sinica,English Series 2022年第5期38卷 937-952页

作者： Gang CAI qiao Li dong Yu PENG School of Mathematics Science Chongqing Normal UniversityChongqing 401331P.R.China College of Science Civil Aviation University of ChinaTianjin 300300P.R.China

In this paper,we investigate a new inertial viscosity extragradient algorithm for solving variational inequality problems for pseudo-monotone and Lipschitz continuous operator and fixed point problems for quasi-nonexpansive mappings in real Hilbert spaces.Strong convergence theorems are obtained under some appropriate conditions on the parameters.Finally,we give some numerical experiments to show the advantages of our proposed algorithms.The results obtained in this paper extend and improve some recent works in the literature.

关键词： Extragradient method variational inequality fixed point strong convergence quasi-nonexpansive mapping

Non-destructive Testing and Intelligent Evaluation of Road Structural Conditions using GPR and FWD

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Zhen Liu Siqi Wang Xingyu Gu qiao Dong National Demonstration Center for Experimental Road and Traffic Engineering Education (Southeast University) Department of Roadway Engineering School of Transportation Southeast University

Aiming at the assessment of road structural conditions， a method of combining ground penetrating radar (GPR) and falling weight deflectometer (FWD) for assessing the pavement structural integrity and strength was proposed in this study. First， 3D GPR was performed to detect the thickness and internal distress of pavement structural layers using the canny edge detection and you only look once version eight (YOLOv8) detection algorithms. Results showed that the error of thickness extraction was approximately 3%， and the distress detection achieved a mean average precision (mAP) of 0.859 and an inference time of 11.43 ms with a GTX 1070 GPU. Then， the extracted thickness was used for the modulus (E) inversion of pavement structure layers based on FWD test data and regression analysis. Finally， the distress ratio inside pavement structures (DRIPS) was proposed as a structural integrity index. The relationship between E and DRIPS was revealed and showed a good correlation. The greater the DRIPS value， the worse the pavement structural integrity and strength. It provides a reference for the evaluation of road structural conditions. This strategy proved to be reliable for nondestructive testing and evaluation of road structures， which could improve the comprehensiveness and effectiveness for evaluating road structural conditions.

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Siphon-Specific Expression of an Actin Encoding Gene Is Regulated by Six1/2 in Ciona savignyi

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Journal of Ocean University of China 2022年第6期21卷 1597-1606页

作者： YUE Wenxuan qiao Jinghan YANG Xiuxia dong Bo Sars-Fang Center MOE Key Laboratory of Marine Genetics and BreedingCollege of Marine Life SciencesOcean University of ChinaQingdao 266003China Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China

Actin is a ubiquitous protein and plays essential roles on cellular structure maintenance and cellular motility in both muscle and non-muscle tissues.Multiple genes encoding muscle actin have been identified from the ascidians,including those expressed in the larval tail muscle,the adult body-wall muscle,and adult heart muscle.In this study,a novel striated non-tail muscle actin gene was identified from the RNA-seq data of Ciona savignyi embryos.Phylogenetic analysis,alignment of the N-terminal amino acid sequences and comparation of diagnostic residues provided evidence that it had high similarity with vertebrate cardiac and skeletal muscle actin.In situ hybridization and promoter-driven GFP reporter assay revealed that it was specifically expressed in the primordia of the oral and atrial siphon.We hereby defined it as siphon-specific muscle actin coding gene(Cs-SMA).A 201 bp(−1350 bp to−1150 bp)sequence containing T-box and Six1/2 binding motif within the upstream region of Cs-SMA confined the expression of GFP in the siphons of electroporated embryos.Six1/2 binding motif was experimentally confirmed to play indispensable role in controlling the siphon-specific expression of Cs-SMA.The tissue-specific expression of Cs-SMA in the siphon primordia indicated its potential crucial roles in Ciona embryogenesis and organogenesis.

关键词： Ciona savignyi actin encoding gene siphon Six1/2 expression regulation

Analytical Blowup Solutions to the Compressible Euler Equations with Time-depending Damping

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Acta Mathematicae Applicatae Sinica 2022年第3期38卷 568-578页

作者： Jian-wei dong Guang-pu LOU qiao ZHANG Zhengzhou University of Aeronautics Zhengzhou 450015China

In this paper,the analytical blowup solutions of the N-dimensional radial symmetric compressible Euler equations are constructed.Some previous results of the blowup solutions for the compressible Euler equations with constant damping are generalized to the time-depending damping case.The generalization is untrivial because that the damp coefficient is a nonlinear function of time t.

关键词： compressible Euler equations time-depending damping blowup

The Development of Khorgas Port in Xinjiang, China and Its Effect on Surrounding Towns

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Chinese Geographical Science 2023年第3期33卷 458-473页

作者： dong Junxi LIU Hanchu ZHAO Yannan CHEN dong qiao Qin FAN Jie School of Economics and Management University of Chinese Academy of SciencesBeijing 100190China Institute of Science and Development Chinese Academy of SciencesBeijing 100190China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Chinese Research Academy of Environmental Sciences Institute of EcologyBeijing 100049China

The sustainable development of border port-cities is of considerable significance to the stabilization and consolidation of border areas,unlike coastal-ports cities that consist of coastal ports and cities.Border ports should continue to drive the development of their surrounding towns to provide high-quality living conditions,employment,and housing for inhabitants of such towns and enhance the population agglomeration capacity of border areas.This study aimed to analyze the structure of employment and settlement in the cities surrounding the Khorgas Port at the different stages of its development—employing semi-structured interviews with individuals to analyze the spatial orientation characteristics of the daily needs of different groups of people and reveal the ways in which border ports drive the development of their surrounding towns—and recommend ways in which this can be improved.This study finds that as the Khorgas Port’s mutual trade market,industrial base,comprehensive management,and other functions continue to grow,the port is becoming increasingly important.As more people work and settl in the surrounding towns,their living needs also increase.However,a considerable number of employed people do not live nearby,and many living needs are not being addressed in the towns surrounding the port.The study also reveals the living services demands of government management personnel who work at the port on weekdays and return to Yining City on weekends,employees of industrial enterprises who work at the port and return home for the New Year’s celebration,and government management personnel and individual business personnel who work at the port and live nearby.In the future,the focus should be on improving the living conditions of the inhabitants of the towns surrounding Khorgas Port,including public services and the settlement ability of employees of industrial enterprises to better realize the radiation drive of the port on the surrounding towns.

关键词： return services coastal