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Deducing Complete Selection Rule Set for Driver Nodes to Guarantee Network’s Structural Controllability

IEEE/CAA Journal of Automatica Sinica 2019年第5期6卷 1152-1165页

作者： Xichen Wang Yugeng Xi Wenzhen Huang shuai jia the Department of Automation Shanghai Jiao Tong UniversityKey Laboratory of System Control and Information ProcessingMinistry of Education of ChinaShanghai200240

Structural controllability is critical for operating and controlling large-scale complex networks. In real applications, for a given network, it is always desirable to have more selections for driver nodes which make the network structurally controllable. Different from the works in complex network field where structural controllability is often used to explore the emergence properties of complex networks at a macro level,in this paper, we investigate it for control design purpose at the application level and focus on describing and obtaining the solution space for all selections of driver nodes to guarantee structural controllability. In accord with practical applications,we define the complete selection rule set as the solution space which is composed of a series of selection rules expressed by intuitive algebraic forms. It explicitly indicates which nodes must be controlled and how many nodes need to be controlled in a node set and thus is particularly helpful for freely selecting driver nodes. Based on two algebraic criteria of structural controllability, we separately develop an input-connectivity algorithm and a relevancy algorithm to deduce selection rules for driver nodes. In order to reduce the computational complexity,we propose a pretreatment algorithm to reduce the scale of network's structural matrix efficiently, and a rearrangement algorithm to partition the matrix into several smaller ones. A general procedure is proposed to get the complete selection rule set for driver nodes which guarantee network's structural controllability. Simulation tests with efficiency analysis of the proposed algorithms are given and the result of applying the proposed procedure to some real networks is also shown, and these all indicate the validity of the proposed procedure.

关键词： Algebraic criteria complete selection rule set structural controllability driver nodes

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N,P co-doped porous graphene with high electrochemical properties obtained via the laser induction of cellulose nanofibrils

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Chinese Journal of Chemical Engineering 2022年第7期35卷 31-38页

作者： Jie Wei Weiwei Yang shuai jia Jie Wei Ziqiang Shao Beijing Engineering Research Center of Cellulose and Its Derivatives School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

Cellulose and its derivatives are natural materials with high carbon contents, but it is challenging to convert their carbon into high value-added carbonaceous materials(e.g., graphene). Here, an approach to convert the carbon in cellulose into N, P co-doped porous graphene(LIG) materials via laser induction is proposed. Cellulose nanofibrils(CNFs), a cellulose derivative with high dispersion uniformity and abundant surface hydroxyl groups, were easily formed on a bulk substrate(thickness ≥5 mm) containing ammonium polyphosphate(APP). Then, a 10.6 μm CO2 laser was used to scribe for 1–5 passes on the CNFs/APP substrate under an ambient environment to produce N, P co-doped porous LIG. Upon increasing the number of laser scribing passes, the IG/IDof LIG first increased and then decreased, reaching a maximum of 1.68 at 4 passes. The good pore structure and low resistance also showed that 4 laser passes were ideal. Besides, the N, P co-doped LIG also showed excellent electrochemical performance, with a specific capacitance of 221.4 FF·g^(-1) and capacitance retention of 89.9%. This method exploits the advantages of nanocellulose and overcomes the difficulties associated with directly compounding cellulosic materials, providing a method for the further development of biomass nanomaterials.

关键词： Cellulose nanofibrils Laser induction Porous graphene Multiple lasing Supercapacitor

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Reinforcement learning with actor-critic for knowledge graph reasoning

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Science China(Information Sciences) 2020年第6期63卷 223-225页

作者： Linli ZHANG Dewei LI Yugeng XI shuai jia Department of Automation Shanghai Jiao Tong University

Dear editor,In recent years, with the development of artificial intelligence and deep learning techniques, knowledge graph (KG) is receiving unprecedented attention. Essentially, KG is a semantic network, which stores massive information structured as entityrelation pairs in a graphical model. When the keywords or questions that users input are mapped

关键词： Reinforcement learning with actor-critic for knowledge graph reasoning MDP

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A Deep Reinforcement Learning Bidding Algorithm on Electricity Market

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Journal of Thermal Science 2020年第5期29卷 1125-1134页

作者： jia shuai GAN Zhongxue XI Yugeng LI Dewei XUE Shibei WANG Limin Department of Automation Key Laboratory of System Control and Information ProcessingShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Coal-based Low-carbon Energy ENN Science and Technology Development Co.Ltd.Langfang 065001China ENN Energy Power Technology(Shanghai)Co. Ltd.Shanghai 201306China

In this paper,we design a new bidding algorithm by employing a deep reinforcement learning *** use the proposed algorithm to estimate conjectural variation of the other firms and then employ this variable to generate the optimal bidding strategy so as to pursue maximal *** this algorithm,electricity generation firms can improve the accuracy of conjectural variations of competitors by dynamically learning in an electricity market with incomplete *** market will reach an equilibrium point when electricity firms adopt the proposed bidding algorithm for a repeated game of power *** simulation examples illustrate the overall energy efficiency of power network will increase by 9.90%as the market clearing price decreasing when all companies use the *** simulation examples also show that the power demand elasticity has a positive effect on the convergence of learning process.

关键词： electricity market reinforcement learning energy efficiency conjectural variation bidding strategy

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Simulation of ENA Imaging Measurements on a Geosynchronous Orbit

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空间科学学报 2022年第5期42卷 884-890页

作者： LU Li YU Qinglong ZHOU Ping jia shuai CHANG Yuan Laboratory of Space Environment Exploration National Space Science CenterChinese Academy of SciencesBeijing 100190 Beijing Key Laboratory of Space Environment Exploration Beijing 100190 Key Laboratory of Science and Technology on Space Environment Situational Awareness Chinese Academy of ScienceBeijing 100049 Shanghai Institute of Satellite Engineering Shanghai 200240

Geosynchronous orbit is located in the ring current region,where the energetic particle emission environment challenges the ion deflection design limit of the Energetic Neutral Atom(ENA)***,there is no measurement record of ENA imaging in this area *** the basis of possessing the patent of high-energy ion deflection technology,ENA imaging under different Kp index in geosynchronous orbit is *** simulation images show the characteristics of low-altitude ENA emission source and the rough sketch of *** to the north-south conjugation observation of geosynchronous orbit,the simulated ENA images at different positions all have north-south *** at the unsolved problems,such as the input source of ring current energetic ions during geomagnetic activities and its evolution process,we analyzed the possible results of ENA imaging combined with in-situ particle measurements in the same satellite,as well as the subversion effect of any north-south asymmetry of ENA map on the inversion model.

关键词： Energetic Neutral Atom(ENA) Magnetosphere Ring current ENA imaging

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Technology of back stoping from level floors in gateway and pillar mining areas of extra-thick seams

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International Journal of Mining Science and Technology 2014年第2期24卷 143-149页

作者： Tu Hongsheng Tu Shihao Zhang Xiaogang Li Zhaoxin jia shuai School of Mines China University of Mining & TechnologyKey Laboratory of Deep Coal Resource MiningMinistry of Education

According to the special requirements of secondary mining of resources in gateway-and-pillar goal in extra-thick seams of Shanxi, this paper presents a technical proposal of back stoping from level floors. Numerical simulation and theoretical analysis are ccsed to investigate the compaction characteristics of cavities under stress as well as an appropriate mining height of the primary-mining layer based on dif- ferent mining widths and pillar widths. For Yangjian coal mine, the mining thickness of the first seam during back stoping from level floor is determined to be 3 m, which meets the relevant requirements. Gateway-and-pillar goaf of a single layer has a range of influence of 9 m vertically. If gateway-and-pillar goaf occurs both in 9-1 and 9-5 layers, the range is extended to within 11.2 m. When the mining width of a gateway is less than 2 m or larger than 5 m, the gateway-and-pillar goal in the upper layer of the primary-mining seam can be filled in and compacted after stoping. When the working face is 2 m away from the gateway and pillar before entering into it and after passing through it, the coal body under the gateway and pillar is subjected to relatively high stress. During mining of the upper layer, moreover, the working face should interlock the goaf in primary-mining layer for 20 m.

关键词： Gateway-and-pillar goaf Back stoping from level floor Secondary mining Numerical simulation Stress evolution

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Direct writing of graphene patterns and devices on graphene oxide films by inkjet reduction

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Nano Research 2015年第12期8卷 3954-3962页

作者： Yang Su shuai jia Jinhong Du jiangtan Yuan Chang Liu Wencai Ren Huiming Cheng Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua RoaShenyang 110016 China

Direct writing of graphene patterns and devices may significantly facilitate the application of graphene-based flexible electronics. In terms of scalability and cost efficiency, inkjet printing is very competitive over other existing direct- writing methods. However, it has been challenging to obtain highly stable and clog-free graphene-based ink. Here, we report an alternative and highly efficient technique to directly print a reducing reagent on graphene oxide film to form conductive graphene patterns. By this ＂inkjet reduction＂ method, without using any other microfabrication technique, conductive graphene patterns and devices for various applications are obtained. The ionic nature of the reductant ink makes it clog-free and stable for continuous and large-area printing. The method shows self-limited reduction feature, which enables electrical conductivity of graphene patterns to be tuned within 5 orders of magnitude, reaching as high as 8,000 S.m-1. Furthermore, this method can be extended to produce noble metal/graphene composite patterns. The devices, including transistors, biosensors, and surface- enhanced Raman scattering substrates, demonstrate excellent functionalities. This work provides a new strategy to prepare large-area graphene-based devices that is low-cost and highly efficient, promising to advance research on graphene- based flexible electronics.

关键词： graphene graphene oxide direct writing inkier printing reduction

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Response of aerobic sludge to AHL-mediated QS:Granulation,simultaneous nitrogen and phosphorus removal performance

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Chinese Chemical Letters 2021年第11期32卷 3402-3409页

作者： jia shuai Xiaoling Hu Bin Wang Wanlin Lyu Rongfan Chen Wenbin Guo Hongyu Wang Dao Zhou School of Civil Engineering Wuhan UniversityWuhan 430072China

The effects of different species and concentrations’signal molecules on aerobic activated sludge system were investigated through batch *** showed that the fastest NH^(+)_(4)-N oxidization rate and the most extracellular polymeric substances(EPS)secretion were obtained by adding 5 nmol/L N-hexanoyl-l-homoserine lactone(C_(6)-HSL)into the aerobic activated *** study investigated the correlation among N-acyl-homoserine lactones-mediated quorum sensing(AHLs-mediated QS),nutrient removal performances and microbial communities with the long-term addition of 5 nmol/L C_(6)-*** was found that C_(6)-HSL-manipulation could enhance the stability and optimize the decontamination performance of aerobic granular sludge(AGS)*** compositions considerably shifted with long-term C_(6)-*** C_(6)-HSL-manipulation inhibited quorum quenching-related(QQ-related)activities and enhanced QS-related activities during the stable *** proposed C_(6)-HSL-manipulation might be a potential technology to inhibit the growth of harmful bacteria in AGS,which could provide a theoretical foundation for the realization of more stable biological wastewater treatments.

关键词： Quorum sensing(QS) Aerobic granular sludge(AGS) Simultaneous nitrogen and phosphorus removal(SNDPR) N-acyl-homoserine lactones(AHLs) N-hexanoyl-L-homoserine lactone(C_(6)-HSL) Nitrogen transformation

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Synthesis of nanofluids composed of deep eutectic solvents and metal-modified MCM-41 particles as multifunctional promoters for fuel oil desulfurization

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Frontiers of Chemical Science and Engineering 2023年第11期17卷 1776-1787页

作者： Jing-Xuan Zhang Xuan Wang Yan-Ru Feng jia-Yu An Yu-Xuan Chi Ya-Tai Liu Ling-Fei Zhang Yun-Bo Zhao Xiang-Feng Zeng Zi-Bo Wang jia-shuai Liu Yi-Fan Wang shuai-Yong Dou Er-Hong Duan Tao Meng School of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control Shijiazhuang 050018China College of Science Hebei Agricultural UniversityBaoding 071001China

Compared with traditional hydrodesulfurization,new nonhydrodesulfurization methods have the advantage of a high removal efficiency for thiophene compounds under mild ***,independent nonhydrodesulfurization technologies are faced with their own shortcomings,such as limitations of the desulfurization performance and regeneration of *** overcome these limitations,four nanofluids were prepared by dispersing different metal-modified MCM-41 particles in deep eutectic solvent as multifunctional promoters to develop a comprehensive desulfurization *** on the excellent adsorbability and high catalytic activity of the dispersed particles and the outstanding extractability of deep eutectic solvent in nanofluids,a high sulfur removal of 99.33%was achieved for model oil under mild conditions in 15 *** nanofluids also showed excellent reusability due to their high structural *** addition,NF@Cu/Al-MCM-41-2.5%exhibited the best desulfurization performance among the prepared *** result was obtained because the introduction of Al ions increased the number of acid sites and defect sites to improve the catalytic activity and adsorbability,and the best affinity of Cu/Al-MCM-41 for the deep eutectic solvent favored the reaction mass *** work opens the door to the development of a comprehensive nonhydrodesulfurization method based on the design of nanofluid materials.

关键词： fuel oil desulfurization nanofluids catalytic ozonation

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Identification and investigation of Calodium hepaticum in rodents and insectivores from Wuhan section of the Yangtze River in China

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Asian Pacific Journal of Tropical Biomedicine 2020年第4期10卷 189-192页

作者： Shui-Mao Zhou Xian-Ling Jin Hao Wang Hua-Tang Luo Xi-shuai jia Wuhan Centers for Disease Prevention and Control Wuhan 430015China Wuhan Xinzhou Schistosomiasis Control Institute Wuhan 430015China

Objective:To investigate the prevalence of Calodium hepaticum(***)in rodents and insectivores from Wuhan section of the Yangtze River in China,and to provide evidence for the prevention and treatment of hepatic Calodium ***:Rodents and insectivores were captured from three selected Yangtze River beaches using *** three survey sites were divided into six areas according to natural conditions,with 60 mousetraps placed in each *** liver lesions in the captured rodents were observed by the naked eye and the eggs in the liver tissue were observed by microscopic ***:A total of 1080 mousetraps were placed,and 1075 mousetraps were retrieved,with the retrieve rate as 99.5%.A total of 101 Apodemus agrarius,12 Rattus norvegicus,and 9 Crocidura attenuata were *** average density of rodents and insectivores was 10.5%and 0.8%,*** of egg nodules from infected rodents showed 98%similarity with that of *** 18 S rRNA(LC425008.1).One Rattus norvegicus was infected with ***,with an infection rate of 3.23%in the Erqi river beach;the other two beaches did not show the incidence of ***:The monitoring of *** in the Yangtze River beaches should be strengthened to reduce the risk of human *** infection.

关键词： Calodium hepaticum Rodents Insectivores Yangtze River beach PCR

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