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reliability modeling of mutual DCFP considering failure physical dependency

Journal of Systems engineering and Electronics 2023年第4期34卷 1063-1073页

作者： CHEN Ying YANG Tianyu WANG Yanfang Science and Technology on Reliability and Environmental Engineering Laboratory Beihang UniversityBeijing 100191China

Degradation and overstress failures occur in many electronic systems in which the operation load and environmental conditions are *** dependency of them called dependent competing failure process(DCFP),has been widely *** system may experience mutual effects of degradation and shocks,they are considered to be *** the degradation and the shock processes will decrease the limit of system and cause cumulative ***,the competition of hard and soft failure will cause the system *** on the failure mechanism accumulation theory,this paper constructs the shock-degradation acceleration and the threshold descent model,and a system reliability model established by using these two *** mutually DCFP effect of electronic system interaction has been decomposed into physical correlation of failure,including acceleration,accumulation and *** a case,a reliability of electronic system in aeronautical system has been analyzed with the proposed *** method proposed is based on failure physical evaluation,and could provide important reference for quantitative evaluation and design improvement of the newly designed system in case of data deficiency.

关键词： electronic system dependent competing failure process(DCFP) failure physical dependency threshold descent model competition failure modes

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Belief reliability:a scientific exploration of reliability engineering

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Journal of Systems engineering and Electronics 2024年第3期35卷 619-643页

作者： ZHANG Qingyuan LI Xiaoyang ZU Tianpei KANG Rui International Innovation Institute Beihang UniversityHangzhou 311115China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing 100191China School of Reliability Engineering and Systems Engineering Beihang UniversityBeijing 100191China School of Aeronautic Science and Engineering Beihang UniversityBeijing 100191China

This paper systematically introduces and reviews a scientific exploration of reliability called the belief *** with the origin of reliability engineering,the problems of present theories for reliability engineering are summarized as a query,a dilemma,and a ***,through philosophical reflection,we introduce the theoretical solutions given by belief reliability theory,including scientific principles,basic equations,reliability science experiments,and mathematical *** basic methods and technologies of belief reliability,namely,belief reliability analysis,function-oriented belief reliability design,belief reliability evaluation,and several newly developed methods and technologies are sequentially elaborated and *** on the above investigations,we summarize the significance of belief reliability theory and make some prospects about future research,aiming to promote the development of reliability science and engineering.

关键词： belief reliability performance margin reliability experiment chance measure uncertainty

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Pharmacokinetic model for extravascular administration based on uncertain differential equation

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Journal of Ambient Intelligence and Humanized Computing 2023年第10期14卷 13887-13899页

作者： Liu, Zhe Kang, Rui School of Reliability and Systems Engineering Beihang University Beijing100191 China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing100083 China

Pharmacokinetics studies the time course of drug concentration in body compartments, and one of the commonly used methods of administration is extravascular administration. Undoubtedly, biological systems are subject to various internal and external noises that change over time. To rationally deal with these dynamic noises, this paper deduces a pharmacokinetic model for extravascular administration using uncertain differential equations for the first time. Some essential pharmacokinetic indexes such as drug concentration, area under the curve, and maximum drug concentration are investigated. Based on the three basic principles of reliability science, i.e., margin-based reliable principle, eternal degradation principle and uncertainty principle, the belief reliability for drug is investigated. The minimum cover estimation for the set of unknown parameters in this uncertain pharmacokinetic model is provided. Numerical example and a real data analysis illustrate our method in detail. Finally, the paradox of a stochastic pharmacokinetic model is presented. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

关键词： reliability

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Co-doped cryptomelane-type manganese oxide in situ grown on a nickel foam substrate for high humidity ozone decomposition

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Journal of environmental sciences 2025年第2期148卷 529-540页

作者： Haoyuan Liang Xu Wang Hui Wang Zhenping Qu Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Monolithic catalysts with excellent O_(3)catalytic decomposition performance were prepared by in situ loading of Co-doped KMn_(8)O_(16)on the surface of nickel *** triple-layer structure with Co-doped KMn_(8)O_(16)/Ni6MnO_(8)/Ni foam was grown spontaneously on the surface of nickel foam by tuning the molar ratio of KMnO_(4)to Co(NO_(3))_(2)·6H_(2)O ***,the formed Ni6MnO_(8)structure between KMn_(8)O_(16)and nickel foam during in situ synthesis process effectively protected nickel foam from further etching,which significantly enhanced the reaction stability of *** optimum amount of Co doping in KMn_(8)O_(16)was available when the molar ratio of Mn to Co species in the precursor solution was 2:*** the Mn2Co1 catalyst had abundant oxygen vacancies and excellent hydrophobicity,thus creating outstanding O_(3)decomposition *** O_(3)conversion under dry conditions and relative humidity of 65%,90%over a period of 5 hr was 100%,94%and 80%with the space velocity of 28,000 hr^(−1),*** in situ constructed Co-doped KMn_(8)O_(16)/Ni foam catalyst showed the advantages of low price and gradual applicability of the preparation process,which provided an opportunity for the design of monolithic catalyst for O_(3)catalytic decomposition.

关键词： Co-doped cryptomelane-type manganese O_(3)decomposition High humidity Nickel foam Monolithic catalyst

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reliability modelling and assessment of CMOS image sensor under radiation environment

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Chinese Journal of Aeronautics 2024年第9期37卷 297-311页

作者： Zhao TAO Wenbin CHEN Xiaoyang LI Rui KANG School of Reliability and Systems Enginering Beihang UniversityBejing 00191China Science and Technologyon Reliabiliy and Environmental Engineering Laboratory Beijing 100191China

The Complementary Metal-Oxide Semiconductor(CMOS)image sensor is a critical component with the function of providing accurate positioning in many space application *** long-time operation in space environments,there are radiation related degradation and var-ious uncertainties affecting the positioning accuracy of CMOS image sensors,which further leads to a reliability reduction of CMOS image ***,the reliability of CMOS image sensors is related to their specified function,degradation,and uncertainties;however,current research has not fully described this *** this paper,a comprehensive approach to reliability modelling of CMOs image sensors is proposed based on the reliability science ***,the perfor-mance margin modelling of centroid positioning accuracy is ***,the degradation model of CMOS image sensors is derived considering the dark current increase induced by the total ionizing dose ***,various uncertainties are analyzed and quantified,and the measure-ment equation of reliability is proposed.A case study of a CMOS image sensor is conducted to apply the proposed method,and the sensitivity analysis can provide suggestions for design and use of CMOS image sensors to ensure reliability.A simulation study is conducted to present the advantages oftheproposed comprehensive approach.

关键词： Complementary metal-oxide semiconductor image sensor Degradation reliability reliability science principles Total ionizingdose effects Uncertainty analysis

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Electronic system life prediction algorithm based on the physical of failure 15

Electronic system life prediction algorithm based on the phy...

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15th IEEE Global reliability and Prognostics and Health Management Conference, PHM-Beijing 2024

作者： Wang, Yanfang Chen, Ying Science and Technology on Reliability and Environmental Engineering Laboratory Beihang University Beijing China

ISBN: (纸本)9798350354010

Enhancing the availability and safety of electronic systems necessitates a comprehensive investigation into their reliability. This study proposes an electronic system life prediction algorithm based on the physics of failure. For commonly used components, both failure physical models and degradation physical models are presented. An improved binary decision diagram (BDD) is constructed, accompanied by the development of a model-solving algorithm. Ultimately, the proposed methodology is applied to the driver circuit board of an electronic controller as a specific case study, thereby demonstrating its effectiveness and validity. © 2024 IEEE.

关键词： Boolean functions

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Robust fully spin-polarized nodal chain in 3D metal-organic framework

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材料科学技术（英文版） 2025年第5期208卷 104-110页

作者： Xiaoyu Wei Ying Liu Lei Jin Cong Liu Xuefang Dai Guodong Liu Xiaoming Zhang State Key Laboratory of Reliability and Intelligence of Electrical Equipment and School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China

The identification of fully spin-polarized topological phases in magnetic inorganic materials has attracted significant *** this study,through first-principles calculations,we characterize CrCl2(pyz)2,a metal-organic framework(MOF),as a nodal chain *** results reveal a ferromagnetic ground state in this material,presenting as a half-metal with a single spin channel near the Fermi ***-ically,the spin-down states form a nodal chain close to the Fermi level,consisting of three nodal loops protected by glide mirror symmetry on distinct ***,fully spin-polarized drumhead sur-face states corresponding to these nodal loops are identified on the material's ***,we observe the persistence of the fully spin-polarized nodal chain even when tuning the ligand rotation an-gle of the ***,our investigation delves into the influence of spin-orbit coupling(SOC)on the system,revealing that it has minimal impact on the nodal *** robustness of the nodal chain in the presence of SOC underscores its intriguing and resilient nature,indicating its potential utility in various electronic ***,the robust realization of a fully spin-polarized nodal chain in this magnetic MOF system holds promise for applications in the realm of spintronics.

关键词： Topology MOFS Half-metal Fully spin-polarized Nodal chain

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Enhanced resistance to ciprofloxacin stress in integrated floating film activated sludge system filled with surface-modified carriers for simultaneous nitrification and denitrification

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Frontiers of environmental science & engineering 2025年第4期19卷 155-167页

作者： Jing Liu Zepeng Wang Tao Liu Xie Quan Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

While the effectiveness of integrated floating film activated sludge(IFFAS)system filled with surface-modified carriers has been demonstrated in promoting simultaneous nitrification and denitrification(SND)performance,the effect of antibiotic stress on this system remains ***,this study investigated the stress response of SND in IFFAS under short-and long-term exposure to ciprofloxacin(CIP),a commonly used *** indicated the significantly higher semi-inhibitory concentration of CIP in the IFFAS system with modified carriers(36.54 mg/L)than that in IFFAS with conventional high density polyethylene(HDPE)carriers(28.77 mg/L).IFFAS system with modified carriers exhibited improved resistance to CIP toxicity compared to IFFAS using HDPE carriers or conventional activated sludge under long-term exposure to CIP concentrations from 50 to 3000μg/*** surface-modified carriers demonstrated a multifaceted strategy to mitigate the inhibitory effects of CIP,such as enhancing production of extracellular polymeric substances(EPS)to serve as a potential protective barrier against CIP toxicity,the less suppression of key enzyme activities involved in nitrogen removal,as well as inducing the upregulation of antibiotic resistance genes(ARGs)(qepA,qnrB/C)and the integrase gene(intI1)to enhance target prevention and efflux pumping mechanisms for resistance to *** findings collectively underscored the efficacy of modified carriers in attenuating CIP toxicity within the SND system.

关键词： Simultaneous nitrification and denitrification(SND) Ciprofloxacin Modified carrier Resistance Extracellular polymeric substances(EPS)

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Rational design of superior catalysts from topological semimetals with nontrivial energy window

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Rare Metals 2024年第5期43卷 1956-1964页

作者： Min Zhao Li-Rong Wang Wei Liu Ming-Hang Li Ying Liu Xue-Fang Dai Guo-Dong Liu Xiao-Ming Zhang Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Materials Science and Engineering ManufacturingHebei University of TechnologyTianjin 300130China

Materials featuring topological energy bands and nontrivial surface states hold significant promise in unlocking unprecedented opportunities for innovating electrocatalytic ***,it remains a challenge to realize superior topological catalysts which can carry both high catalytic activity and excellent catalytic ***,we propose that a family of Ni-based binary materials hosting fantasying topological conjunct-nodalpoint state and a large nontrivial energy window(NEWD)represents an ideal choice for such superior topological catalysts in hydrogen evolution *** presence of conjunct-nodal-points ensures long Fermi arcs on the surface,thereby enabling an extremely high catalytic *** NEWD plays a crucial role in stabilizing the high catalytic activity against external perturbations,such as strain and electron/hole *** roles for conjunctnodal-points and NEWD are substantiated by the observable weakening of catalytic performance during topological phase transitions,which result in the removal of the conjunct-nodal-points,NEWD and their corresponding long Fermi *** work unveils a hidden mechanism and opens a feasible route for developing superior quantum catalysts from novel topology point of view.

关键词： First-principles modeling Topological semimetal Nontrivial surface states Hydrogen evolution reaction

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Conductive and stable polyphenylene/CNT composite membrane for electrically enhanced membrane fouling mitigation

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Frontiers of environmental science & engineering 2024年第1期18卷 35-47页

作者： Huijuan Xie Haiguang Zhang Xu Wang Gaoliang Wei Shuo Chen Xie Quan Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Nanocarbon-based conductive membranes, especially carbon nanotube (CNT)-based membranes, have tremendous potential for wastewater treatment and water purification because of their excellent water permeability and selectivity, as well as their electrochemically enhanced performance (e.g., improved antifouling ability). However, it remains challenging to prepare CNT membranes with high structural stability and high electrical conductivity. In this study, a highly electroconductive and structurally stable polyphenylene/CNT (PP/CNT) composite membrane was prepared by electropolymerizing biphenyl on a CNT hollow fiber membrane. The PP/CNT membrane showed 3.4 and 5.0 times higher electrical conductivity than pure CNT and poly(vinyl alcohol)/CNT (PVA/CNT) membranes, respectively. The structural stability of the membrane was superior to that of the pure CNT membrane and comparable to that of the PVA/CNT membrane. The membrane fouling was significantly alleviated under an electrical assistance of −2.0 V, with a flux loss of only 11.7% after 5 h filtration of humic acid, which is significantly lower than those of PP/CNT membranes without electro-assistance (56.8%) and commercial polyvinylidene fluoride (PVDF) membranes (64.1%). Additionally, the rejection of negatively charged pollutants (humic acid and sodium alginate) was improved by the enhanced electrostatic repulsion. After four consecutive filtration-cleaning cycle tests, the flux recovery rate after backwashing reached 97.2%, which was much higher than those of electricity-free PP/CNT membranes (67.0%) and commercial PVDF membranes (61.1%). This study offers insights into the preparation of stable conductive membranes for membrane fouling control in potential water treatment applications.

关键词： Polyphenylene CNTs Membrane Electro-assistance Membrane fouling mitigation

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