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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

Cooperative UAV search strategy based on DMPC-AACO algorithm in restricted communication scenarios

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Defence Technology（防务技术） 2024年第1期31卷 295-311页

作者： Shiyuan Chai Zhen Yang Jichuan Huang xiaoyang li Yiyang Zhao Deyun Zhou School of Electronics and Information Northwestern Polytechnical UniversityXi'an 710072China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China The 93147th Unit of Chinese PLA Air Force Chengdu610091China

Improvement of integrated battlefield situational awareness in complex environments involving dynamic factors such as restricted communications and electromagnetic interference(EMI)has become a contentious research *** certain mission environments,due to the impact of many interference sources on real-time communication or mission requirements such as the need to implement communication regulations,the mission stages are represented as a dynamic combination of several communication-available and communication-unavailable ***,the data interaction between unmanned aerial vehicles(UAVs)can only be performed in specific communication-available *** cooperative search algorithms cannot handle such situations *** solve this problem,this study constructed a distributed model predictive control(DMPC)architecture for a collaborative control of UAVs and used the Voronoi diagram generation method to re-plan the search areas of all UAVs in real time to avoid repetition of search areas and UAV collisions while improving the search efficiency and safety *** attention mechanism ant-colony optimization(AACO)algorithm is proposed for UAV search-control decision *** search strategy is adaptively updated by introducing an attention mechanism for regular instruction information,a priori information,and emergent information of the mission to satisfy different search expectations to the maximum *** results show that the proposed algorithm achieves better search performance than traditional algorithms in restricted communication constraint scenarios.

关键词： Unmanned aerial vehicles(UAV) Cooperative search Restricted communication Mission planning DMPC-AACO

Uncertain process-based data integration and residual lifetime evaluation of PCB in airborne equipment with ADT and field data

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Chinese Journal of Aeronautics 2024年第8期37卷 233-245页

作者： Yu WANG Rui KANG linhan GUO xiaoyang li Zhe liU Xiaohui WANG Weifang ZHANG Schoool of Reliability and Systems Engineering Beihang UniversityBeijing 100191China

Accurately evaluating the lifespan of the Printed Circuit Board(PCB)in airborne equipment is an essential issue for aircraft design and operation in the marine atmospheric *** paper presents a novel evaluation method by fusing Accelerated Degradation Testing(ADT)data,degradation data,and life data of small samples based on the uncertainty degradation *** uncertain life model of PCB in airborne equipment is constructed by employing the uncertain distribution that considers the accelerated factor of multiple environmental conditions such as temperature,humidity,and *** addition,a degradation process model of PCB in airborne equipment is constructed by employing the uncertain process of fusing ADT data and field data,in which the performance characteristics of dynamic cumulative change are *** on minimizing the pth sample moments,an integrated method for parameter estimation of the PCB in airborne equipment is proposed by fusing the multi-source data of life,degradation,and *** engineering case illustrates the effectiveness and advantage of the proposed method.

关键词： Printed circuit board Degradation Data integration Field environment Accelerated degradation testing Parameter estimate

PRRSV degrades MDA5 via dual autophagy receptors P62 and CCT2 to evade antiviral innate immunity

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Virologica Sinica 2024年第2期39卷 264-276页

作者： Ruiqi Sun Yanyu Guo lilin Zhang Huixia Zhang Boxuan Yin xiaoyang li Changyan li liu Yang Lei Zhang Zexing li Jinhai Huang School of life Sciences Tianjin UniversityTianjin300072China

Porcine reproductive and respiratory syndrome virus(PRRSV)is a major economically devastating pathogen that has evolved various strategies to evade innate *** of antiviral interferon largely promotes PRRSV immunoevasion by utilizing cytoplasmic melanoma differentiation-associated gene 5(MDA5),a receptor that senses viral *** this study,the downregulated transcription and expression levels of porcine MDA5 in PRRSV infection were observed,and the detailed mechanisms were *** found that the interaction between P62 and MDA5 is enhanced due to two factors:the phosphorylation modification of the autophagic receptor P62 by the upregulated kinase CK2αand the K63 ubiquitination of porcine MDA5 catalyzed by the E3 ubiquitinase TRIM21 in PRRSV-infected *** a result of these modifications,the classic P62-mediated autophagy is ***,porcine MDA5 interacts with the chaperonin containing TCP1 subunit 2(CCT2),which is enhanced by PRRSV *** interaction promotes the aggregate formation and autophagic clearance of MDA5-CCT2-nsp3 independently of *** summary,enhanced MDA5 degradation occurs in PRRSV infection via two autophagic pathways:the binding of MDA5 with the autophagy receptor P62 and the aggrephagy receptor CCT2,leading to intense innate immune *** research reveals a novel mechanism of immune evasion in PRRSV infection and provides fundamental insights for the development of new vaccines or therapeutic strategies.

关键词： Porcine reproductive and respiratory syndrome virus(PRRSV) nsp3 Autophagy MDA5

A Stroke of Ecorealism

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Beijing Review 2024年第25期67卷 42-43页

作者： li xiaoyang 不详

In the fantasy world created by contemporary *** Augustina Droze,swirling and-colorful flora and fauna deliver to onlookers an exuberant explosion of creativity.

关键词： contemporary deliver colorful

THE REVVED-UP REVOLUTION Chinese-made electric vehicles are gaining stronger momentum

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Beijing Review 2024年第23期67卷 12-15页

作者： li xiaoyang 不详

China's BYD said on January1 that its sales of pure electric vehicles(EVs)hit 526,409 in the fourth quarter of *** number surpassed the worldwide sales of *** maker Tesla at 484,507,making BYD the world's biggest EV *... 详细信息

关键词： momentum stronger sales

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Robots Into Reality

Beijing Review 2024年第29期67卷 36-38页

作者： li xiaoyang 不详

"Galbot,please help fetch a plush toy!"After receiving the order,Galbot,a humanoid robot,was able to identify and deliver the toy from among a range of *** demonstration was given at the 2024 World Artificial Intelligence Conference(WAIC)held in Shanghai from July 4 to *** was developed by Beijing Galbot ***.,a robotics company founded in the Chinese capital in May *** robot is capable of grabbing designated items from racks,folding clothes,and opening drawers and closets.

关键词： robot Intelligence please

Preparation for Precipitation China revs up its flood control and rescue efforts

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Beijing Review 2024年第28期67卷 30-31页

作者： li xiaoyang 不详

Since the start of the rainy season,persistent heavy rainfall has lashed many areas in China,bringing severe *** have been taken to control floods,rescue those affected and reduce disaster damage.

关键词： floods flood bringing

Countryside CEOs Young entrepreneurs help revitalize rural areas in China

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Beijing Review 2024年第30期67卷 34-35页

作者： li xiaoyang 不详

Passion and effort are what led to Wang Jing becoming a CEO in her *** took on the role in June *** the e-commerce company she runs has only 10 employees,it's playing a big role in boosting the economy of the village ... 详细信息

关键词： CEO boosting becoming

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