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Tsinghua Science and Technology 2021年第1期26卷 95-111页

作者： Wei Zhang Xiao Chen jianhui jiang the School of Software Engineering Tongji UniversityShanghai 201804China

Virtualization is the most important technology in the unified resource layer of cloud computing *** placement and dynamic management are two types of Virtual Machine(VM)management *** dynamic management is based on the structure of the initial VM placement,and this initial structure will affect the efficiency of VM dynamic *** a VM fails,cloud applications deployed on the faulty VM will crash if fault tolerance is not *** this study,a model of initial VM fault-tolerant placement for star topological data centers of cloud systems is built on the basis of multiple factors,including the service-level agreement violation rate,resource remaining rate,power consumption rate,failure rate,and fault tolerance ***,a heuristic ant colony algorithm is proposed to solve the *** service-providing VMs are placed by the ant colony algorithms,and the redundant VMs are placed by the conventional heuristic *** experimental results obtained from the simulation,real cluster,and fault injection experiments show that the proposed method can achieve better VM fault-tolerant placement solution than that of the traditional first fit or best fit descending method.

关键词： cloud computing virtual machine placement fault tolerance multi-objective optimization heuristic ant colony algorithm

Recent progress in gold nanoparticle-based biosensing and cellular imaging

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Science China Chemistry 2016年第7期59卷 783-793页

作者： Haiyang Peng Hao Tang jianhui jiang State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University

Gold nanoparticles(Au NPs) have been extensively used in optical biosensing and bioimaging due to the unique optical properties. Biological applications including biosensing and cellular imaging based on optical properties of Au NPs will be reviewed in the paper. The content will focus on detection principles, advantages and challenges of these approaches as well as recent advances in this field.

关键词： gold nanoparticle optical functionalization biosensing cellular imaging

Delving noble metal and semiconductor nanomaterials into enantioselective analysis

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Chinese Chemical Letters 2019年第9期30卷 1565-1574页

作者： Yongting Wen Zheng Li jianhui jiang State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University

With growing interests paid to the enantioselective analysis of chiral molecules, roles played by noble metal and semiconductor nanomaterials surface gradually. Given the unique physicochemical properties of noble metal and semiconductor nanomaterials, the enantioselective analyses are classified into three categories: fluorescence-based, colorimetry-based, and circular dichroism-based ones. In this paper, we review the existing progresses on enantioselective analysis, thanks to noble metal and semiconductor nanomaterials. Finally, the prospect of enantioselective analysis based on noble metal and semiconductor are discussed.

关键词： Enantiomers Noble metal nanomaterials Chiroplasmonic Semiconductor nanomaterials Chiroexcitonic Enantioselective analysis

DNA-nanostructure-templated precise biomineralization

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National Science Review 2018年第6期5卷 789-791页

作者： Liping Qiu Hui Liu jianhui jiang Weihong Tan Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratory of Chemo/Bio-sensing and Chemometrics College of Chemistry and Chemical Engineering and College of Biology Institute of Molecular Medicine Renji HospitalSchool of Medicine and College of Chemistry and Chemical Engineering Shanghai Jiao Tong University

As the best designer in material science,nature has developed unique strategies for synthesizing various ingenious materials with highly controlled structural features and outstanding biophysical properties to fit dif... 详细信息

关键词： DNA-nanostructure-templated precise biomineralization flexible

Loop Subgraph-Level Greedy Mapping Algorithm for Grid Coarse-Grained Reconfigurable Array

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Tsinghua Science and Technology 2023年第2期28卷 330-343页

作者： Naijin Chen Fei Cheng Chenghao Han jianhui jiang Xiaoqing Wen School of Computer and Information Science Anhui Polytechnic UniversityWuhu 241000China School of Software Engineering Tongji UniversityShanghai 201804China Department of Computer Science and Networks Kyushu Institute of TechnologyFukuoka 820-8502Japan

To solve the problem of grid coarse-grained reconfigurable array task mapping under multiple constraints,we propose a Loop Subgraph-Level Greedy Mapping(LSLGM)algorithm using parallelism and processing element *** the constraint of a reconfigurable array,the LSLGM algorithm schedules node from a ready queue to the current reconfigurable cell array *** mapping a node,its successor’s indegree value will be dynamically *** its successor’s indegree is zero,it will be directly scheduled to the ready queue;otherwise,the predecessor must be dynamically *** the predecessor cannot be mapped,it will be scheduled to a blocking *** dynamically adjust the ready node scheduling order,the scheduling function is constructed by exploiting factors,such as node number,node level,and node *** with the loop subgraph-level mapping algorithm,experimental results show that the total cycles of the LSLGM algorithm decreases by an average of 33.0%(PEA44)and 33.9%(PEA_(7×7)).Compared with the epimorphism map algorithm,the total cycles of the LSLGM algorithm decrease by an average of 38.1%(PEA_(4×4))and 39.0%(PEA_(7×7)).The feasibility of LSLGM is verified.

关键词： Grid Coarse-Grained Reconfigurable Array(GCGRA) mapping loop subgraph scheduling

A Worst-Case Execution Time Analysis Approach Based on Independent Paths for ARM Programs

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Wuhan University Journal of Natural Sciences 2012年第5期17卷 391-399页

作者： KONG Liangliang jiang jianhui School of Software Engineering Tongji UniversityShanghai 201804China

To overcome disadvantages of traditional worst-case execution time （WCET） analysis approaches, we propose a new WCET analysis approach based on independent paths for ARM programs. Based on the results of program flow analysis, it reduces and partitions the control flow graph of the program and obtains a directed graph. Using linear combinations of independent paths of the directed graph, a set of feasible paths can be generated that gives complete coverage in terms of the program paths considered. Their timing measurements and execution counts of program segments are derived from a limited number of measurements of an instrumented version of the program. After the timing measurement of the feasible paths are linearly expressed by the execution times of program seg-ments, a system of equations is derived as a constraint problem, from which we can obtain the execution times of program segments. By assigning the execution times of program segments to weights of edges in the directed graph, the WCET estimate can be calculated on the basis of graph-theoretical techniques. Comparing our WCET estimate with the WCET measurement obtained by the exhaustive measurement, the maximum error ratio is only 8.259 3 %. It is shown that the proposed approach is an effective way to obtain the safe and tight WCET estimate for ARM programs.

关键词： worst-case execution time independent path realtime system least squares ARM microprocessor

Efficient Scheduling Mapping Algorithm for Row Parallel Coarse-Grained Reconfigurable Architecture

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Tsinghua Science and Technology 2021年第5期26卷 724-735页

作者： Naijin Chen Zhen Wang Ruixiang He jianhui jiang Fei Cheng Chenghao Han School of Computer and Information Science Anhui Polytechnic UniversityWuhu 241000China School of Computer Science and Technology Shanghai University of Electric PowerShanghai 200090China School of Software Engineering Tongji UniversityShanghai 201804China

Row Parallel Coarse-Grained Reconfigurable Architecture(RPCGRA)has the advantages of maximum parallelism and programmable *** an efficient algorithm to map the diverse applications onto RPCGRA is difficult due to a number of RPCGRA hardware *** solve this problem,the nodes of the data flow graph must be partitioned and scheduled onto the *** this paper,we present a Depth-First Greedy Mapping(DFGM)algorithm that simultaneously considers the communication costs and the use times of the Reconfigurable Cell Array(RCA).Compared with level breadth mapping,the performance of DFGM is *** percentage of maximum improvement in the use times of RCA is 33%and the percentage of maximum improvement in non-original input and output times is 64.4%(Given Discrete Cosine Transfor 8(DCT8),and the area of reconfigurable processing unit is 56).Compared with level-based depth mapping,DFGM also obtains the lowest averages of use times of RCA,non-original input and output times,and the reconfigurable time.

关键词： temporal mapping Reconfigurable Cell Array(RCA) listed scheduling communication costs

Synergistic enhancement of Ce-ZnO/g-C_(3)N_(4)photocatalytic performance using N,O-bis-vacancy induction and S-scheme heterojunctions

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Journal of Rare Earths 2024年第5期42卷 817-826,I0001页

作者： Guyu Zhang Yuan Zhang Xinlei Zhao Yujiang Jiao Yumin Yan jianhui jiang Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps College of Chemistry a Chemical EngineeringTarimUniversityAlar843300China

The photocatalytic decontamination of organic pollutants is an environmentally friendly and efficient water treatment *** introduction of vacancies,heterojunctions,and doping can enhance the performance of photocatalysts for such *** this study,N,O double-vacancy Ce-ZnO/g-C_(3)N_(4)S-scheme heterojunction photocatalysts were prepared,It is found that the electron separation and transfer efficiencies are considerably improved by the presence of nitrogen vacancies in graphitic ca rbon nitride(g-C_(3)N_(4))and oxygen vacancies in ZnO,in addition to the S-scheme heterojunction created between the two *** the degradation of methylene blue and ciprofloxacin,the degradation rates exhibited by Ce-ZnO/g-C_(3)N_(4)are significantly higher than those of the g=C_(3)N_(4)/ZnO *** remarkable photocatalytic performance of Ce-ZnO/g-C_(3)N_(4)may result from three key factors;(ⅰ)Ce doping,which produces impurity energy levels;(ⅱ)the generation of electron capture centres by the N and O vacancies;and(ⅲ)the synergistic effect of the S-type heterojunction formed at the interface between the two materials,This study therefore provides new approaches for the use of doping,vacancies,and heterojunctions to induce the efficient degradation of organic pollutants.

关键词： Photocatalysis Vacancy S-scheme Ce-ZnO/g-C_(3)N_(4) Degradation Rare earths

Accurate Reliability Analysis Methods for Approximate Computing Circuits

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Tsinghua Science and Technology 2022年第4期27卷 729-740页

作者： Zhen Wang Guofa Zhang Jing Ye jianhui jiang Fengyong Li Yong Wang School of the Computer Science and Technology Shanghai University of Electric PowerShanghai 200090China Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China School of Software Engineering Tongji UniversityShanghai 200092China

In recent years,Approximate Computing Circuits(ACCs)have been widely used in applications with intrinsic tolerance to *** the increased availability of approximate computing circuit approaches,reliability analysis methods for assessing their fault vulnerability have become highly *** this study,two accurate reliability evaluation methods for approximate computing circuits are *** reliability of approximate computing circuits is calculated on the basis of the iterative Probabilistic Transfer Matrix(PTM)*** the calculation,the correlation coefficients are derived and combined to deal with the correlation problem caused by fanout *** accuracy and scalability of the two methods are verified using three sets of approximate computing circuit instances and more circuits in Evo Approx8 b,which is an approximate computing circuit open source *** results show that relative to the Monte Carlo simulation,the two methods achieve average error rates of 0.46%and 1.29%and time overheads of 0.002%and 0.1%.Different from the existing approaches to reliability estimation for approximate computing circuits based on the original PTM model,the proposed methods reduce the space overheads by nearly 50%and achieve time overheads of 1.78%and 2.19%.

关键词： Approximate Computing Circuit(ACC) correlation coefficient iterative Probabilistic Transfer Matrix(PTM) reliability

First Total Synthesis of the Proposed Structures of Orisuaveolines A and B

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Chinese Journal of Chemistry 2013年第1期31卷 123-126页

作者： Jie Zhang Shijun Da Xiaolin Feng Xiaoyi Chen jianhui jiang Ying Li State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering Lanzhou University Lanzhou Gansu 730000 China

First total synthesis of the proposed structures of β-indoloquinazoline alkaloids orisuaveolines A and B is re- ported. The key steps of the synthesis included a Pictet-Spengler reaction to build a six-member lactam which fur- ther transformed into target molecular by a one-pot condensation. This synthesis provided an access to the proposed structures of orisuaveolines A and B in a short and convenient manner from inexpensive, commercially available starting materials. The structures of our synthesized products were confirmed by 2D-NMR experiments.

关键词： orisuaveolines A and B indoloquinazoline alkaloids Pictet-Spengler reaction one-pot condensation