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An executable modeling and analyzing approach to C4ISR architecture

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Journal of Systems Engineering and Electronics 2020年第1期31卷 109-117页

作者： HE Hongyue ZHU Weixing li ruiyang DENG Qiaoyu Institute of Command and Control Engineering Army Engineering University of PLA

To analyze the behavioral model of the command,control,communication,computer,intelligence,surveillance,reconnaissance(C4ISR)architecture,we propose an executable modeling and analyzing approach to ***,the meta concept model of the C4ISR architecture is *** to the meta concept model,we construct the executable meta models of the C4ISR architecture by extending the meta models of ***,we define the concrete syntax and executable activity algebra(EAA)semantics for executable *** semantics functions are introduced to translating the syntax description of executable models into the item of *** support the execution of models,we propose the executable rules which are the structural operational semantics of ***,an area air defense of the C4ISR system is used to illustrate the feasibility of the approach.

关键词： command control communication computer intelligence surveillance reconnaissance(C4ISR)architecture meta model executable model algebraic semantics

Physics-informed deep learning for solving phonon Boltzmann transport equation with large temperature non-equilibrium

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npj Computational Materials 2022年第1期8卷 245-254页

作者： ruiyang li Jian-Xun Wang Eungkyu Lee Tengfei Luo Department of Aerospace and Mechanical Engineering University of Notre DameNotre DameIN46556USA Department of Electronic Engineering Kyung Hee UniversityYongin-siGyeonggi-do17104South Korea Department of Chemical and Biomolecular Engineering University of Notre DameNotre DameIN46556USA Center for Sustainable Energy of Notre Dame(ND Energy) University of Notre DameNotre DameIN46556USA

Phonon Boltzmann transport equation(BTE)is a key tool for modeling multiscale phonon transport,which is critical to the thermal management of miniaturized integrated circuits,but assumptions about the system temperatures(i.e.,small temperature gradients)are usually made to ensure that it is computationally *** include the effects of large temperature non-equilibrium,we demonstrate a data-free deep learning scheme,physics-informed neural network(PINN),for solving stationary,mode-resolved phonon BTE with arbitrary temperature *** scheme uses the temperature-dependent phonon relaxation times and learns the solutions in parameterized spaces with both length scale and temperature gradient treated as input *** experiments suggest that the proposed PINN can accurately predict phonon transport(from 1D to 3D)under arbitrary temperature ***,the proposed scheme shows great promise in simulating device-level phonon heat conduction efficiently and can be potentially used for thermal design.

关键词： phonon equilibrium equation

Distribution of Calcium Carbonate in the Process of Concrete Self-healing

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Journal of Wuhan University of Technology(Materials Science) 2016年第3期31卷 557-562页

作者：钱春香 li ruiyang LUO Mian CHEN Huaicheng School of Materials Science and Engineering Southeast UniversityNanjing 211189China Research Institute of Green Construction Materials Southeast UniversityNanjing 211189China

The complete deposition distribution process of calcium carbonate is summarized in three directions of cracks. Distribution of calcium carbonate in the self-healing process of microbial concrete is studied in detail, with the help of a variety of analytical techniques. The results show that carbonate deposits along the x-axis direction of the cracks. The farther from the crack surfaces of concrete matrix in x-axis direction, the more the content of the substrate, the less content of calcium carbonate. Gradual accumulation of calcium carbonate along the y-axis direction is like building a house with bricks. Different repair points are gradually connected, and ultimately the whole of cracks are completely filled. In the z-axis direction, calcium deposits on the surface of fracture direction, when the crack is filled on the surface, because the internal crack hypoxia in the depths of cracks hardly produces calcium carbonate.

关键词： microbial concrete cracks self-healing calcium carbonate deposition

Effi ciency of Concrete Crack-healing based on Biological Carbonate Precipitation

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Journal of Wuhan University of Technology(Materials Science) 2015年第6期30卷 1255-1259页

作者：罗勉钱春香 li ruiyang RONG Hui College of Materials Science and Engineering Southeast University Research Institute of Green Construction Materials Southeast University

The aim of this study was to improve the capacity for crack-repair in concrete by developing a new way. The self-healing agent based on biological carbonate precipitation was developed. Crack-healing capacity of the cement paste specimens with this biochemical agent was researched. Scanning electron microscopy（SEM） and X-ray diffraction（XRD） were used to characterize the precipitation in *** healing efficiency was evaluated by measuring the water permeability after crack healing as *** experimental results show that the applied biochemical agent can successfully improve the self-healing capacity of the cement paste specimens as larger cracks can be healed. The cracks with a width of 0.48 mm in the specimens with the biochemical agent are nearly fully healed by the precipitation after 80 d repair. SEM and XRD analysis results demonstrate that the white precipitation in cracks is calcium carbonate, which displays spherical crystal morphology. Meanwhile, the water permeability test result shows that the biochemical agent can significantly decrease the water permeability of the cement paste specimens, the water permeability of specimens with the biochemical agent respectively decreases by 84% and 96% after 7 d and 28 d immersion in water, however the control specimens only respectively decrease by 41% and 60%, which indicates that the bacteria-based concrete appears to be a promising approach to increase concrete durability.

关键词： crack-healing capacity concrete bacteria self-healing agent water permeability

Promote the conductivity of solid polymer electrolyte at room temperature by constructing a dual range ionic conduction path

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Journal of Energy Chemistry 2022年第1期31卷 395-403,I0011页

作者： ruiyang li Haiming Hua Yuejing Zeng Jin Yang Zhiqiang Chen Peng Zhang Jinbao Zhao College of Chemistry and Chemical Engineering State-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleState Key Laboratory of Physical Chemistry of Solid SurfacesEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollaborative Innovation Center of Chemistry for Energy MaterialsXiamen UniversityXiamen 361005FujianChina College of Energy Xiamen UniversityXiamen 361102FujianChina

Poly(ethylene oxide)(PEO)is a classic matrix model for solid polymer electrolyte which can not only dissociate lithium-ions(li^(+)),but also can conduct li^(+) through segmental motion in ***,the crystal aggregation state of PEO restricts the conduction of li^(+) especially at room *** this work,an amorphous polymer electrolyte with ethylene oxide(EO)and propylene oxide(PO)block structure(B-PEG@DMC)synthesized by the transesterification is firstly obtained,showing an ionic conductivity value of 1.1×10^(5) S/cm at room temperature(25℃).According to the molecular dynamics(MD)simulation,the PO segments would lead to an inconsecutive and hampered conduction of li^(+),which is not beneficial to the short range conduction of li^(+).Thus the effect of transformation of aggregation state on the improveme nt of ionic conductivity is not eno ugh,it is n ecessary to further consider the differe nt coupled behaviours of EO and PO segments with li^(+).In this way,we blend this amorphous polymer(B-PEG@DMC)with PEO to obtain a dual range ionic conductive solid polymer electrolyte(D-SPE)with further improved ionic conductivity promoted by constructing a dual range fast ionic conduction,which eventually shows a further improved ionic conductivity value of 2.3×10^(5) S/cm at room temperature.

关键词： Solid polymer electrolyte Amorphous polymer Ionic conductivity Room temperature Arrhenius equation

A branch and price algorithm for the robust WSOS scheduling problem

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Journal of Systems Engineering and Electronics 2021年第3期32卷 658-667页

作者： li ruiyang HE Ming HE Hongyue WANG Zhixue YANG Cheng Institute of Command and Control Engineering Army Engineering University of PLANanjing 210007China

To analyze and optimize the weapon system of systems(WSOS)scheduling process,a new method based on robust capabilities for WSOS scheduling optimization is ***,we present an activity network to represent the military *** member systems need to be reasonably assigned to perform different activities in the *** we express the problem as a set partitioning formulation with novel columns(activity flows).A heuristic branch-and-price algorithm is designed based on the model of the WSOS scheduling problem(WSOSSP).The algorithm uses the shortest resource-constrained path planning to generate robust activity flows that meet the capability ***,we discuss this method in several test *** results show that the solution can reduce the makespan of the mission remarkably.

关键词： weapon system of systems(WSOS) robust optimization scheduling decision branch-and-price column generation

Monolithic polyimine vitrimer/graphene aerogel composites

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Chinese Chemical Letters 2023年第2期34卷 529-533页

作者： Jinye Zhang Shichang Luo Yunlong Ma ruiyang li Yinghua Jin li Qiu Wei Zhang Yunnan Key Laboratory for Micro/Nano Materials&Technology National Center for International Research on Photoelectric and Energy MaterialsSchool of Materials and EnergyYunnan UniversityKunming 650091China Department of Chemistry University of Colorado BoulderBoulderCO 80309United States

Graphene-polymer composites have attracted great attention as sensing materials due to their tailorable electrical conductivity, physicochemical properties, and sensitivity to geometric and functional ***, we report the first example of cylindrical monolithic polyimine vitrimer/graphene composites with excellent mechanical, compressive, rehealable and recyclable, and piezoresistive properties via simple infiltration of polymer monomers into the pores of graphene aerogel followed by thermal curing. The composites exhibit excellent durable compressibility(negligible reduction in the compression properties even after 3000 consecutive compression cycles), rapid recovery to the original size upon stress released,high compressive strength(up to 1.2 MPa), and high conductivity(up to 79 S/m). Excellent piezoresistive properties were observed, displaying consistent and reliable change of the electrical resistance with the compression ratio. Furthermore, rehealing with ~100% recovery of the compressive strength and electric conductivity was achieved under mild rehealing conditions, which is highly desired but has rarely been reported for electronic materials. The facile strategy for fabrication of rehealable monolithic polymer/GAs can open new possibilities for the sustainable development of composites with high electrical conductivity for various applications such as sensing, health monitoring, and movement detection.

关键词： Vitrimer Graphene aerogel Polyimine Rehealable Piezoresistive Monolithic

Highly Conductive Poly(Imide–Imine)Hybrid Vitrimer-Graphene Aerogel Composites

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Chinese Journal of Chemistry 2023年第17期41卷 2125-2131页

作者： Yunlong Ma ruiyang li Shichang Luo Xiran Shen Rao Tao Yinghua Jin Wei Zhang li Qiu Yunnan Key Laboratory for Micro/Nano Materials&Technology National Centerfor International Research on Photoelectric and Energy MaterialsSchoolof Materialsand EnergyYunnan UniversityKunmingYunnan 650091China Department of Chemistry University of Colorado BoulderBoulderColorado 80309USA

Comprehensive Summary,Although polyimides(PIs)have shown great potential for a broad range of applications,it remains very challenging to achieve the malleability,rehealability and recyclability for PIs and their composites targeting various applications,particularly for the rapidly emerging flexible and stretchable ***,malleable conductive poly(imide-imine)hybrid(PIIH)vitrimer-graphene aerogel(GA)composites have been prepared,for the first time,via simple sol-gel film formation followed by *** resulting PIIH-GA composites exhibit not only the highly desired properties of thermosetting(strong mechanical strength)and thermoplastic(reprocessability)polymers,but also good conductivity enabled by the GA ***3-GA-10(with 10 wt%GA)showed one of the highest electrical conductivities(26.7 S/m)for PI-based composites,as well as good electromagnetic interference(EMI)shielding ***,the PIIH-GA films could maintain good performance during stretching and even after chemical recycling,which opens new opportunities for flexible and sustainable electronics development.

关键词： Sol-gel processes Thin films Sustainable chemistry Polyimide thermoset Dynamic covalent bond/Recyclable polymers EMI shielding

The Critical Role of Fillers in Composite Polymer Electrolytes for lithium Battery

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Nano-Micro Letters 2023年第5期15卷 339-375页

作者： Xueying Yang Jiaxiang liu Nanbiao Pei Zhiqiang Chen ruiyang li lijun Fu Peng Zhang Jinbao Zhao College of Energy Xiamen UniversityXiamen 361102People’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy MaterialsState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005People’s Republic of China College of Energy Nanjing Technical UniversityNanjing 211816People’s Republic of China

With excellent energy densities and highly safe performance,solidstate lithium batteries(SSLBs)have been hailed as promising energy storage ***-state electrolyte is the core component of SSLBs and plays an essential role in the safety and electrochemical performance of the *** polymer electrolytes(CPEs)are considered as one of the most promising candidates among all solid-state electrolytes due to their excellent comprehensive *** this review,we briefly introduce the components of CPEs,such as the polymer matrix and the species of fillers,as well as the integration of fillers in the *** particular,we focus on the two major obstacles that affect the development of CPEs:the low ionic conductivity of the electrolyte and high interfacial *** provide insight into the factors influencing ionic conductivity,in terms of macroscopic and microscopic aspects,including the aggregated structure of the polymer,ion migration rate and carrier *** addition,we also discuss the electrode-electrolyte interface and summarize methods for improving this *** is expected that this review will provide feasible solutions for modifying CPEs through further understanding of the ion conduction mechanism in CPEs and for improving the compatibility of the electrode-electrolyte interface.

关键词： Composite polymer electrolytes Fillers Ionic conductivity Electrode-electrolyte interface