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FATOC:Bug Isolation Based Multi-Fault Localization by Using OPTICS Clustering

Journal of Computer Science & Technology 2020年第5期35卷 979-998页

作者： Yong-Hao Wu Zheng Li Yong Liu Xiang Chen College of information Science and Technology Beijing University of Chemical TechnologyBeijing 100029China School of information Science and Technology Nantong UniversityNantong 226019China State Key Laboratory of information Security.Institute of information Engineering Chinese Academy of Sciences Beijing 100093China

Bug isolation is a popular approach for multi-fault localization(MFL),where all failed test cases are clustered into several groups,and then the failed test cases in each group combined with all passed test cases are used to localize only a single ***,existing clustering algorithms cannot always obtain completely correct clustering results,which is a potential threat for bug isolation based MFL *** address this issue,we first analyze the influence of the accuracy of the clustering on the performance of MFL,and the results of a controlled study indicate that using the clustering algorithm with the highest accuracy can achieve the best performance of ***,previous studies on clustering algorithms also show that the elements in a higher density cluster have a higher *** on the above motivation,we propose a novel approach FATOC(One-Fault-at-a-Time via OPTICS Clustering).In particular,FATOC first leverages the OPTICS(Ordering Points to Identify the Clustering Structure)clustering algorithm to group failed test cases,and then identifies a cluster with the highest *** clustering is a density-based clustering algorithm,which can reduce the misgrouping and calculate a density value for each *** a density value of each cluster is helpful for finding a cluster with the highest clustering *** then combines the failed test cases in this cluster with all passed test cases to localize a single-fault through the traditional spectrum-based fault localization(SBFL)*** this fault is localized and fixed,FATOC will use the same method to localize the next single-fault,until all the test cases are *** evaluation results show that FATOC can significantly outperform the traditional SBFL technique and a state-of-the-art MFL approach MSeer on 804 multi-faulty versions from nine real-world ***,FATOC’s performance is 10.32%higher than that of traditional SBFL when using Ochiai formul

关键词： bug isolation multiple-fault localization ordering points to identify the clustering structure(OPTICS)clustering empirical study

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Interpreting the dynamic effect of internal heat integration on reactive distillation columns

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Chinese Journal of chemical Engineering 2017年第1期25卷 89-102页

作者： Yang Yuan Liang Zhang Haisheng Chen Shaofeng Wang Kejin Huang Huan Shao College of information Science and Technology Beijing University of Chemical Technology Patent Examination Cooperation Center of the Patent Office SIPO

In this work,the impact of internal heat integration upon process dynamics and controllability by superposing reactive section onto stripping section,relocating feed locations,and redistributing catalyst within the reactive section is explored based on a hypothetical ideal reactive distillation system containing an exothermic reaction:A + BC + *** state operation analysis and closed-loop controllability evaluation are carried out by comparing the process designs with and without the consideration of internal heat *** superposing reactive section onto stripping section,favorable effect is aroused due to its low sensitivities to the changes in operating *** ascending the lower feed stage,somewhat detrimental effect occurs because of the accompanied adverse internal heat integration and strong sensitivity to the changes in operating *** descending the upper feed stage,serious detrimental effect happens because of the introduced adverse internal heat integration and strong sensitivity to the changes in operating *** redistributing catalyst in the reactive section,fairly small negative influence is aroused by the sensitivity to the changes in operating *** reinforcing internal heat integration with a combinatorial use of these three strategies,the decent of the upper feed stage should be avoided in process *** the conclusions are derived based on the hypothetical ideal reactive distillation column studied,they are considered to be of general significance to the design and operation of other reactive distillation columns.

关键词： Reactive distillation column Internal heat integration Process design Process dynamics Process control

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Statistical key variable analysis and model-based control for improvement performance in a deep reactive ion etching process

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Journal of Semiconductors 2012年第6期33卷 118-124页

作者：陈山潘天红李正明郑西显 School of Electrical and information Engineering Jiangsu University Department of chemical Engineering National Tsing-Hua University

This paper proposes to develop a data-driven via＇s depth estimator of the deep reactive ion etching process based on statistical identification of key *** feature extraction algorithms are presented to reduce the high-dimensional data and effectively undertake the subsequent virtual metrology（VM） model building *** the available on-line VM model,the model-based controller is hence readily applicable to improve the quality of a via＇s *** operational data taken from a industrial manufacturing process are used to verify the effectiveness of the proposed *** results demonstrate that the proposed method can decrease the MSE from 2.2×10^（-2） to 9×10^（-4） and has great potential in improving the existing DRIE process.

关键词： deep reactive-ion etching virtual metrology through silicon via key variable analysis model-based control

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A modeling approach for fuzzy programming with echelon form membership functions

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北京化工大学学报（自然科学版） 2018年第1期45卷 78-83页

作者： WEN Bo LI HongGuang CHEN XiaoChun College of information Science & Technology College of chemical Engineering Beijing University of Chemical Technology Beijing 100029 China

In order to solve fuzzy mathematical programming with soft constraints,the initial models must first be converted into crisp *** functions are employed to describe the fuzzy right-hand side parameters needed to achieve this *** some cases,echelon form membership functions(EFMFs)are required to depict the actual fuzzy ***,due to their discrete properties,fuzzy programming problems with such membership functions cannot be modeled by traditional *** by these challenges,this paper introduces a novel absolute value representation modeling approach to formulate fuzzy programming using *** approach can translate a discrete model to a continuous one which can then be easily ***,by means of a numerical example,the effectiveness of our new approach is demonstrated.

关键词： echelon form membership function fuzzy right-hand side absolute value representation

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High-throughput synthesis of size-controlled Pt-based catalysts

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Particuology 2023年第12期83卷 232-240页

作者： Zhuoran Deng Liqiang Zhao Daojian Cheng State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China College of information Science and Technology Beijing University of Chemical TechnologyBeijing100029China

Pt catalysts are commonly used for chemical reaction processes due to its high catalytic activity and ***,the size of metal particles often has a significant impact on the performance of the metal-loaded ***,developing highly efficiently synthesis method for the size control of Pt catalysts has great development prospects and research *** this study,high-throughput size tuning of Pt-based catalysts was achieved by carbonizing the *** experimental and characterization results showed that the size of the loaded Pt nanoparticles varied with different concentrations of glucose solution during carriers carbonization *** reduction of 4-nitrophenol as a template reaction indicated that the reaction rate constant of the catalyst is approximately linear with the size of Pt ***,a laboratory-built high-throughput synthesis system was applied for the catalyst synthesis,which enhances the automation of the laboratory exploratory experiments and makes it possible to synthesize catalysts with controllable size in batches.

关键词： High-throughput synthesis Size modulation Pt-based catalysts 4-Nitrophenol reduction

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BIFURCATIONS OF A CUBIC SYSTEM PERTURBED BY DEGREE FIVE

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Acta Mathematica Scientia 2009年第1期29卷 11-24页

作者：尚德生张同华 School of Mathematics and information Science Shandong University of Technology Department of chemical Engineering Curtin University of Technology

In this article, using multi-parameter perturbation theory and qualitative analysis, the authors studied a kind of cubic system perturbed by degree five and ob-tained the system that can have 17 limit cycles giving th... 详细信息

关键词： Perturbation singular point value homoclinic loop limit cycle

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High photoluminescence efficiency in polymer containing rare earth

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Chinese Optics Letters 2005年第8期3卷 480-482页

作者：吴哲夫凌启淡石旭刚张江鑫朱广信 information Engineering Institute Zhejiang University of Technology Department of chemical Engineering National University of Singapore

Three novel kinds of polymers containing rare earth europium have been synthesized and the integrating sphere technique was employed to measure the absolute photoluminescence （PL） efficiency. The PL efficiencies were found to be up to about 40%, which indicates the potential usage in organic light emitting devices （OLED）. The energy transfer from ligand to Eu ions and the ^5D0→^7F2 transition of Eu^3＋ were analyzed under the PL process.

关键词： Energy transfer Europium Light emitting diodes Organic polymers Photoluminescence

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Syntheses and Characterization of Binuclear Complexes Tb_(1-x)Eu_x(TTA)_3 Phen

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Journal of Rare Earths 2007年第3期25卷 296-301页

作者：吕玉光张敬畅曹维良张福俊徐征 State Key Laboratory of chemical Resource Engineering Institute of Modern CatalysisBeijing University of Chemical Technology Laboratory of Materials for information Storage and Displays Institute of Optoelectronic TechnologyNorthern Jiaotong University

Rare earth ternary complexes Tb1-xEux（TTA）3Phen（x=0,0.25,0.5,0.75,1.0）were synthesized and characterized by DTA-TG,XRD and infrared（IR）.The photophysical properties of these complexes were studied in detail using ultraviolet absorption spectra and fluorescent *** absorption showed that the energy absorption of the complexes mostly came from *** spectra of Tb1-xEux（TTA）3Phen complexes were similar to the pure *** curves proved that the complexes were ***3＋ emission was almost quenched and the Eu3＋ emission was enhanced by codoping the *** Tb3＋ ion acted as an energy transfer bridge that helped energy transfer from poly（N-vinylcar-bazole（PVK）to Eu3＋.In addition,their PL and EL properties were systematically studied.

关键词： Tb1-xEux(TTA)3Phen synthesis characterization electroluminescence rare earths

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Affective Preferences Mining Approach with Applications in Process Control

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Journal of Shanghai Jiaotong university(Science) 2022年第5期27卷 737-746页

作者： SU Chong LÜJing ZHANG Danyang LI Hongguang College of information Science and Technology Beijing University of Chemical TechnologyBeijing100029China

Traditional industrial process control activities relevant to multi-objective optimization problems,such as proportional integral derivative(PID)parameter tuning and operational optimizations,always demand for process knowledge and human operators’experiences during human-computer ***,the impact of human operators’preferences on human-computer interactions has been rarely highlighted ever *** response to this problem,a novel multilayer cognitive affective computing model based on human personalities and pleasure-arousal-dominance(PAD)emotional space states is established in this ***,affective preferences are employed to update the affective computing model during human-machine ***,we propose affective parameters mining strategies based on genetic algorithms(GAs),which are responsible for gradually grasping human operators’operational preferences in the process control *** routine process control tasks,including PID controller tuning for coupling loops and operational optimization for batch beer fermenter processes,are carried out to illustrate the effectiveness of the contributions,leading to the satisfactory results.

关键词： affective computing preferences mining process control

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A Microfluidic System with Active Mixing for Improved Real-Time Isothermal Amplification

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Journal of Beijing Institute of Technology 2022年第3期31卷 275-284页

作者： Dianlong Yang Xiaodan Jiang Yijie Zhou Xiaobin Dong Luyao Liu Lulu Zhang Xianbo Qiu College of information Science and Technology Beijing University of Chemical TechnologyBeijing 100029China

To improve the performance of real-time recombinase polymerase amplification(RPA),a microfluidic system with active mixing is developed to optimize the reaction *** of adopting a single typical reaction chamber,a specific reactor including a relatively large chamber in center with two adjacent zig-zag channels at two sides is integrated into the microfluidic *** mixing is achieved by driving the viscous reagent between the chamber and the channel back and forth periodically with an outside compact peristaltic *** avoid reagent evapora-tion,one end of the reactor is sealed with paraffin oil.A hand-held companion device is developed to facilitate real-time RPA amplification within 20 *** whole area of the reactor is heated with a resistance heater to provide uniform reaction *** achieve real-time monitoring,a compact fluorescence detection module is integrated into the hand-held device.A smartphone with custom application software is adopted to control the hand-held device and display the real-time fluorescence *** performances of two cases with and without active on-chip mixing are compared between each other by detecting African swine fever *** has been demonstrated that,with active on-chip mixing,the amplification efficiency and detection sensitivity can be signifi-cantly improved.

关键词： recombinase polymerase amplification(RPA) microfluidic chip active mixing optical detection smartphone

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