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A new species of Pheronematidae (Porifera:Hexactinellida:Amphidiscosida) from the Northwest Pacific Ocean

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Acta Oceanologica Sinica 2018年第10期37卷 175-179页

作者： gong lin LI Xinzheng Institute of Oceanology Chinese Academy of Sciences Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology (Qingdao) Center for Ocean Mega-Science Chinese Academy of Sciences Graduate University University of Chinese Academy of Sciences

A new species of the family Pheronematidae is described in this study. Specimens were collected at Yap seamount and Caroline seamount in the Northwest Pacific Ocean. Poliopogon distortus sp. nov. contains oval macramphidiscs, three categories of amphidiscs, clavate monaxons and sceptres, making it distinguished from the eight known congeners easily. This is the fourth record of genus Poliopogon from the Northwest Pacific Ocean. We also used a partial sequence of 16S rDNA gene to confirm the family assignment of the new specimen.

关键词： deep sea Hexactinellida new species Poliopogon

The Superlinear Convergence Analysis of a Nonmonotone BFGS Algorithm on Convex Objective Functions

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Acta Mathematica Sinica,English Series 2008年第1期24卷 35-42页

作者： gong lin YUAN Zeng Xin WEI School of Science East China University of Science and Technology Shanghai 200237 P. R. China College of Mathematics and Information Science Guangxi University Nanning 530004 P. R. China

We prove the superlinear convergence of a nonmonotone BFGS algorithm on convex objective functions under suitable conditions.

关键词： BFGS method superlinear convergence nonmonotone linesearch

Buckling response of offshore pipelines under combined tension, bending, and external pressure

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第8期12卷 627-636页

作者： Shun-feng gong lin YUAN Wei-liang JIN Institute of Structural Engineering Zhejiang University Hangzhou 310058 China

The buckle and collapse of offshore pipeline subjected to combined actions of tension, bending, and external pressure during deepwater installation has drawn a great deal of attention. Extended from the model initially proposed by Kyriakides and his co-workers, a 2D theoretical model which can successfully account for the case of simultaneous tension, bending, and external pressure is further developed. To confirm the accuracy of this theoretical method, numerical simulations are conducted using a 3D finite element model within the framework of ABAQUS. Excellent agreement between the results validates the effectiveness of this theoretical method. The model is then used to study the effects of several important factors such as load path, material prop-erties, and diameter-to-thickness ratio, etc., on buckling behaviors of the pipes. Based upon parametric studies, a few significant conclusions are drawn, which aims to provide the design guidelines for deepwater pipeline with solid theoretical basis.

关键词： Deepwater Offshore pipeline Buckle External pressure

Reactor field reconstruction from sparse and movable sensors using Voronoi tessellation-assisted convolutional neural networks

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Nuclear Science and Techniques 2024年第5期35卷 173-185页

作者： He-lin gong Han Li Dunhui Xiao Sibo Cheng Paris Elite Institute of Technology Shanghai Jiao Tong UniversityShanghai 200240China School of Mathematical Sciences Tongji UniversityShanghai 200092China Department of Computing Data Science InstituteImperial College LondonLondon SW72AZUK

The aging of operational reactors leads to increased mechanical vibrations in the reactor *** vibration of the incore sensors near their nominal locations is a new problem for neutronic field *** field-reconstruction methods fail to handle spatially moving *** this study,we propose a Voronoi tessellation technique in combination with convolutional neural networks to handle this *** from movable in-core sensors were projected onto the same global field structure using Voronoi tessellation,holding the magnitude and location information of the *** convolutional neural networks were used to learn maps from observations to the global *** proposed method reconstructed multi-physics fields(including fast flux,thermal flux,and power rate)using observations from a single field(such as thermal flux).Numerical tests based on the IAEA benchmark demonstrated the potential of the proposed method in practical engineering applications,particularly within an amplitude of 5 cm around the nominal locations,which led to average relative errors below 5% and 10% in the L_(2) and L_(∞)norms,respectively.

关键词： Voronoi tessellation Field reconstruction Nuclear reactors Reactor physics On-line monitoring

An evaluation method of contribution rate based on fuzzy Bayesian networks for equipment system-of-systems architecture

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Journal of Systems Engineering and Electronics 2023年第3期34卷 574-587页

作者： XU Renjie LIU Xin CUI Donghao XIE Jian gong lin School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China College of Systems Engineering National University of Defense TechnologyChangsha 410073China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019China

The contribution rate of equipment system-of-systems architecture(ESoSA)is an important index to evaluate the equipment update,development,and architecture *** the traditional ESoSA contribution rate evaluation method does not make full use of the fuzzy information and uncertain information in the equipment system-of-systems(ESoS),and the Bayesian network is an effective tool to solve the uncertain information,a new ESoSA contribution rate evaluation method based on the fuzzy Bayesian network(FBN)is ***,based on the operation loop theory,an ESoSA is constructed considering three aspects:reconnaissance equipment,decision equipment,and strike ***,the fuzzy set theory is introduced to construct the FBN of ESoSA to deal with fuzzy information and uncertain ***,the fuzzy importance index of the root node of the FBN is used to calculate the contribution rate of the ESoSA,and the ESoSA contribution rate evaluation model based on the root node fuzzy importance is ***,the feasibility and rationality of this method are validated via an empirical case study of aviation *** with traditional methods,the evaluation method based on FBN takes various failure states of equipment into consideration,is free of acquiring accurate probability of traditional equipment failure,and models the uncertainty of the relationship between *** proposed method not only supplements and improves the ESoSA contribution rate assessment method,but also broadens the application scope of the Bayesian network.

关键词： equipment system-of-systems architecture(ESoSA) contribution rate evaluation fuzzy Bayesian network(FBN) fuzzy set theory

Architecture of HLA Based Distributed Virtual Geographic Environment

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Geo-Spatial Information Science 2006年第2期9卷 127-134页

作者： XU Bingli lin Hui gong Jianhua Institute of Space and Earth Information Science The Chinese University of Hong Kong Shatin N.T. Hong Kong

Integrating the theory of distributed virtual geographic environment (DVGE) and high level architecture(HLA), the architecture of DVGE based on HLA is designed. The data flow and the object models of the architecture are also discussed. The architecture basically meets the need of DVGE in real-time communication, distribution, collaboration, reusing and interoperation, expansion, and standard.

关键词： distributed virtual geographic environment high level architecture runtime infrastructure architecture

Coherence resonance and bi-resonance by time-periodic coupling strength in Hodgkin-Huxley neuron networks

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Science China Chemistry 2012年第2期55卷 256-261页

作者： lin Xiu gong YuBing WANG Li MA XiaoGuang School of Physics Ludong University Yantai 264025 China

We study the effect of time-periodic coupling strength on the spiking coherence of Newman-Watts networks of Hodgkin-Huxley(HH) neurons with non-Gaussian *** is found that the spiking can exhibit coherence resonance(CR) when the extent of deviation of non-Gaussian noise from Gaussian noise and the amplitude of the coupling strength are *** particular,coherence bi-resonance(CBR) is observed when the frequency of the coupling strength is varied,and the CBR is always observed when the frequency is equal to,or a multiple of,the spiking period,manifesting as the locking between the frequencies of the spiking and the coupling *** results show that a time-periodic coupling strength may play a more constructive and efficient role in enhancing the spiking coherence of the neuronal networks than a constant coupling *** findings provide insight into the role of time-periodic coupling strength for enhancing the time precision of information processing in neuronal networks.

关键词： neuronal network time-periodic coupling strength coherence resonance and bi-resonance non-Gaussian noise

A Hybrid Conjugate Gradient Algorithm for Nonconvex Functions and Its Applications in Image Restoration Problems

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Journal of the Operations Research Society of China 2023年第4期11卷 759-781页

作者： gong-lin Yuan Ying-Jie Zhou Meng-Xiang Zhang College of Mathematics and Information Science Center for Applied Mathematics of GuangxiGuangxi UniversityNanning530004China

It is prominent that conjugate gradient method is a high-efficient solution way for large-scale optimization ***,most of the conjugate gradient methods do not have sufficient descent *** this paper,without any line search,the presented method can generate sufficient descent directions and trust region *** use some suitable conditions,the global convergence of the method is established with Armijo line ***,we study the proposed method for solving nonsmooth problems and establish its global *** experiments show that the presented method can be applied to solve smooth and nonsmooth unconstrained problems,image restoration problems and Muskingum model successfully.

关键词： Conjugate gradient Smooth and nonsmooth problems Nonconvex functions Global convergence

Multiparty semiquantum key agreement without entanglement

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Communications in Theoretical Physics 2020年第6期72卷 70-75页

作者： Ming-Ming Wang Rui-Fan Han lin-Ming gong Shaanxi Key Laboratory of Clothing Intelligence State and Local Joint Engineering Research Center for Advanced Networking and Intelligent Information ServicesSchool of Computer ScienceXi'an Polytechnic UniversityXi'an 710048China

The key agreement protocols allow two or more users to negotiate a shared key for establishing a secure communication channel without a third trusted party in such a way that the shared key is determined by all authorized players rather than any subset of *** propose the first real multiparty semiquantum key agreement(SQKA)protocols based on *** protocols include only one quantum player,while the others are classical players who only need to measure and prepare states in the classical *** first present a symmetric three-party SQKA protocol,where two classical players can fairly negotiate a key with a quantum player by using single-photons as message *** we present an asymmetric SQKA protocol where a relatively low percentage of quantum states are used for eavesdropping *** we further extend them to an asymmetric multiparty SQKA *** SQKA protocols require fewer quantum resources than the previous SQKA protocols for classical players,especially without requirement of entanglement,which makes them easier to implement using current *** protocols are secure against external eavesdroppers and are fair against a minority of internal dishonest players.

关键词： multiparty semiquantum key agreement single-photon fairness efficiency symmetric and asymmetric protocol