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Computers, Materials & Continua 2024年第7期80卷 973-994页

作者： zhan shi Electric Power Dispatching Control Center Guangdong Power Grid Co.Ltd.Guangzhou510030China

The convergence of Internet of Things(IoT),5G,and cloud collaboration offers tailored solutions to the rigorous demands of multi-flow integrated energy aggregation dispatch data *** generative adversarial networks(GANs)are instrumental in resource scheduling,their application in this domain is impeded by challenges such as convergence speed,inferior optimality searching capability,and the inability to learn from failed decision making ***,a cloud-edge collaborative federated GAN-based communication and computing resource scheduling algorithm with long-term constraint violation sensitiveness is proposed to address these *** proposed algorithm facilitates real-time,energy-efficient data processing by optimizing transmission power control,data migration,and computing resource *** employs federated learning for global parameter aggregation to enhance GAN parameter updating and dynamically adjusts GAN learning rates and global aggregation weights based on energy consumption constraint *** results indicate that the proposed algorithm effectively reduces data processing latency,energy consumption,and convergence time.

关键词： IoT federated learning generative adversarial network data processing multi-flowintegration energy aggregation dispatch

Optimal Control for a Class of Complex Singular System Based on Adaptive Dynamic Programming

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 188-197页

作者： zhan shi zhanshan Wang the College of Information Science and Engineering Northeastern University the State Key Laboratory of Synthetical Automation for Process Industries(Northeastern University) IEEE

This paper presents a new design approach to achieve decentralized optimal control of high-dimension complex singular systems with dynamic uncertainties. Based on robust adaptive dynamic programming(robust ADP) method, controllers for solving the singular systems optimal control problem are designed. The proposed algorithm can work well when the system model is not exactly known but the input and output data can be measured. The policy iteration of each controller only uses their own states and input information for learning,and do not need to know the whole system dynamics. Simulation results on the New England 10-machine 39-bus test system show the effectiveness of the designed controller.

关键词： Adaptive dynamic programming (ADP) decentralized control frequency control power system singular systems

Regulation of Tumor Microenvironment Under Malignant Conditions:Application of nMOFs in Sonodynamic Therapy

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Chemical Research in Chinese Universities 2024年第4期40卷 611-626页

作者： YANG Yilin YAN Fei shi zhan State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun130012P.R.China

In this review,we delve into the intricate regulation of the tumor microenvironment(TME)under malignant conditions and explore the transformative potential of nanoscale metal-organic frameworks(nMOFs)in the realm of sonodynamic therapy(SDT).The TME serves as a dynamic milieu influencing tumor progression and therapeutic response,presenting formidable challenges,such as hypoxia,acidity,excess hydrogen peroxide,high expression of glutathione,and *** the exceptional attributes of nMOFs,including their tunable structures and biocompatibility,holds immense promise for enhancing SDT efficacy and reshaping the TME *** integrating nMOFs with SDT,researchers aim to assemble multiple functionalities in a single platform that enhance tumor cell eradication while counteracting unfavorable TME conditions and immune *** potential of nMOFs to revolutionize tumor therapies by precisely targeting TME and overcoming therapeutic barriers is underscored by an in-depth analysis of recent breakthroughs in the use of nMOFs-based sonosensitizers to remodulate TME to amplify the efficacy of SDT.

关键词： Sonodynamic therapy Metal-organic framework Tumor microenvironment Modification of sonosensitizer

Hydrothermal Synthesis and Crystal Structure of Inorganic-organic Hybrid Compound [H_3NC_2H_4NH_2]VOPO_4

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Chemical Research in Chinese Universities 2001年第3期17卷 249-252页

作者： zhanG Dong shi zhan FENG Shou-hua National Key Laboratory of Inorganic Synthesis&Preparative Chemistry Department of ChemistryJilin UniversityChangchun 130023P.R.China

An inorganic-organic hybrid compound, [H_3NC_2H_4NH_2]VOPO_4 was synthesized by means of the hydrothermal method. It was crystallized in a monoclinic system, a space group P2_1/c, with the crystal cell parameters: a=0.92285(11) nm, b=0.72994(9) nm, c=0.98495(11) nm, β=101.280(3)°, V=0.65067(13) nm^3, M_r=223.02 g/mol, D_c=2.277 g/cm^3, Z=4, R=0.0315, ωR=0.0865, GOF=1.085. The VO_5N octahedra chains are corner-linked by PO_4 tetrahedra; the VO_5N octahedra are all trans-linked with V—O bonds being alternately short and long. The monoprotonated ethylenediamine was intercalated between the layers with one end coordinating to V and the other end as an H-bond donor interacting with a terminal O atom of PO_4 from a neighboring sheet. The elementary analysis, infrared spectrum characters and thermal stability were also given.

关键词： Inorganic-organic hybrid material Hydrothermal synthesis Vanadium phosphate Crystal structure

Multi-functional sites catalysts based on post-synthetic modification of metal-organic frameworks

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Chinese Chemical Letters 2018年第6期29卷 827-830页

作者： Dingxuan Ma Baiyan Li zhan shi State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University College of Chemistry and Molecular Engineering Qingdao University of Science and Technology

Metal-organic frameworks（MOFs） are a unique class of porous crystalline materials that have shown promise for a wide range of applications. MOFs have been explored as a new type of heterogeneous catalytic materials, because of their high surface area, uniform and tunable pores, facile functionalization and incorporation of catalytic active sites. The use of multi-functional sites MOF materials as catalysts for synergistic catalysis and tandem reactions has attracted increasing attention. In this review, we aim to introduce the construction of bi-or multi-functional MOF catalysts with cooperative or cascade functions via post-synthetic modification（PSM）.

关键词： Metal-organic frameworks Multi-functional sites Catalysis Post-synthetic modification

An infinite-dimensional representation of the Ray-Knight theorems

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Science China Mathematics 2024年第1期67卷 149-162页

作者： Elie Aidékon Yueyun Hu zhan shi School of Mathematical Sciences Fudan UniversityShanghai 200433China LAGA UniversitéSorbonne Paris NordVilletaneuse 93430France Institute of Applied Mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China

The classical Ray-Knight theorems for the Brownian motion determine the law of its local time process either at the first hitting time of a given value a by the local time at the origin,or at the first hitting time of a given position b by the Brownian *** extend these results by describing the local time process jointly for all a and b,by means of the stochastic integral with respect to an appropriate white *** result applies toμ-processes,and has an immediate application:aμ-process is the height process of a Feller continuous-state branching process(CSBP)with immigration(Lambert(2002)),whereas a Feller CSBP with immigration satisfies a stochastic differential equation(SDE)driven by a white noise(Dawson and Li(2012));our result gives an explicit relation between these two descriptions and shows that the SDE in question is a reformulation of Tanaka’s formula.

关键词： Ray-Knight theorem μ-process white noise Tanaka's formula

A Bayesian based quasianalytical algorithm for retrieval of inherent optical properties from ocean color

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Chinese Science Bulletin 2005年第23期50卷 2770-2777页

作者： zhan Haigang shi Ping CHEN Chuqun LED South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China

The recently developed quasi-analytical algo-rithm (QAA) is a promising algorithm for deriving inherentoptical properties from ocean color. Unlike the conventionalsemi-analytical algorithm, QAA does not need a prioriknowledge of the spectral shape of chlorophyll ***, several empirical relations, which may not be uni-versally applicable and can result in low noise tolerance, areinvolved in QAA. In this study, the Bayesian inversion theoryis introduced to improve the performance of QAA. In theestimation of total absorption coefficient at the referencewavelength, instead of empirical algorithms used in the QAAthe Bayesian approach is employed in combination with anoptical model that uses separate parameters to account ex-plicitly for the contribution of molecular and particle scat-terings to remote sensing reflectance, a priori knowledgeproduced by the QAA, the Akaike’s Bayesian informationcriterion (ABIC) for choosing the optimal regularizationparameter, and genetic algorithms for global *** at other wavelengths are then derived using anempirical estimate of particle backscattering spectral *** applied to a simulated dataset synthesized by IOCCG,the Bayesian algorithm outperforms QAA algorithm, espe-cially in higher chlorophyll concentration waters. The rootmean square errors (RMSEs) between the true and the de-rived a(440) and bb(440) are reduced from 0.918 and 0.039m–1 for QAA-555 to 0.367 and 0.023 m–1 for Bayes-555, 0.205and 0.007 m–1 for QAA-640 to 0.092 and 0.005 m–1 forBayes-640, and 0.207 and 0.007 m–1 for QAA-blending to0.096 and 0.005 m–1 for Bayes-blending. Results of noise sen-sitivity analysis show that the Bayesian algorithm is morerobust than QAA.

关键词：海洋颜色遥感内部光学性质贝叶斯定理准分析算法

Gravitational wave radiation from a double white dwarf system inside our galaxy: a potential method for seeking strange dwarfs

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Research in Astronomy and Astrophysics 2009年第7期9卷 745-750页

作者： zhan-Kui Lu shi-Wei Wu Zhi-Cheng Zeng Department of Astronomy Nanjing University Nanjing 210008 China

Like the investigation of double white dwarf （DWD） systems, strange dwarf （SD） - white dwarf （WD） system evolution in Laser Interferometer Space Antenna （LISA）＇s absolute amplitude-frequency diagram is investigated. Since there is a strange quark core inside an SD, SDs＇ radii are significantly smaller than the value predicted by the standard WD model, which may strongly affect the gravitational wave （GW） signal in the mass-transferring phases of binary systems. We study how an SD-WD binary evolves across LISA＇s absolute amplitude-frequency diagram. In principle, we provide an executable way to detect SDs in the Galaxy＇s DWD systems by radically new windows offered by GW detectors.

关键词： accretion accretion disks - binaries close - dense matter - gravitational waves

High thermoelectric properties with low thermal conductivity due to the porous structure induced by the dendritic branching in n-type PbS

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Nano Research 2022年第5期15卷 4739-4746页

作者： Zhenyu Zhu Janak Tiwari Tianli Feng zhan shi Yue Lou Biao Xu School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Mechanical Engineering The University of UtahSalt Lake CityUT 84112USA State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210000China

PbS-based thermoelectric materials have attracted extensive attention in recent years for the advantages of earth abundancy and low cost,which is considered to be a substitute for traditional PbTe ***,their high thermal conductivity restricts its ***,in order to improve their thermoelectric performance from reducing the thermal conductivity,a kind of dendritic PbS with controlled crystal grain and morphology are obtained by solution *** adjusting the amount of surfactant(CTAB),the specific formation process of dendrites is *** sintering,the dendritic PbS nanoparticles are easy to form porous structure due to the overlapping and staggered arrangement of dendritic *** comparison,we also prepare a kind of regular octahedral PbS and a dense packing arrangement is formed because of the integrity of the octahedral ***-based Boltzmann transport equation is used to prove the crucial role of porous structure in scattering ***,a maximum zT=1.0 at 773 K in n-type PbS is obtained,which still keep a high-speed growth and is expected to get higher zT value in a higher temperature *** work may shed light to other thermoelectric materials from the formation of porous structure to reduce the thermal conductivity.

关键词： thermoelectric materials lead sulfide solution synthesis porous structure

Dimensional reduction enhances photocatalytic carbon dioxide reduction performance of metal-organic frameworks

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Nano Research 2024年第5期17卷 3653-3659页

作者： Kaiyue Ma Jixin Li Jinlu Liu Chunguang Li zhan shi Shouhua Feng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China

Metal-organic frameworks(MOFs)have shown significant potential as *** has been widely assumed that all catalytic active sites within MOFs are functional in photocatalytic reactions but for a three-dimensional MOF,whether the internal catalytic active sites can effectively absorb light and actively contribute to photocatalytic reactions remains to be *** this context,we synthesized a two-dimensional nanosheet MOF(2D-MOF)and a three-dimensional bulk MOF(3D-MOF)composed of Zr^(6) clusters and tetracarboxylic porphyrin(TCPP)by the approach described in the ***(bpy)(CO)^(3)Cl(bpy=2,2’-bipyridine),which has remarkable CO_(2) photoreduction ability,was introduced to the two MOFs to create two new photocatalysts 2D-MOF-Re and 3D-MOF-Re,*** CO_(2) reduction experiments show that based on the equal number of catalytic active sites,the CO turnover number(TON)of 2D-MOF-Re reaches 27.8 in 6 h,which is 50 times that of *** result shows that certain catalytic active sites inside the bulk MOF are inactive due to the inability to absorb *** study illuminates the potential of the dimensional reduction approach in the design of photocatalysts to exploit the capabilities fully.

关键词： photocatalysis CO_(2)reduction metal-organic frameworks(MOFs) nanosheets light absorption