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A review on dFACS(II):Modeling and analysis of disturbances and noises

Chinese Journal of Aeronautics 2024年第5期37卷 120-147页

作者： Chenglei YUE Bohan JIAO Zhaohui dANG Xiaokui YUE Yonghe ZHANG Yuanqing XIA Li dUAN Qinglei HU Qifan LIU Pengcheng WANG Ming GUO Zhansheng dUAN Bing CUI Chu ZHANG Xiaodong SHAO School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 710699China School of Automation Beijing Institute of TechnologyBeijing 100081China Institute of Mechanics Chinese Academy of SciencesBeijing 710043China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Automation Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

This paper presents Part II of a review on dFACS,which specifically focuses on the modeling and analysis of disturbances and noises in *** Part I,the system composition and dynamics model of the dFACS were *** this paper,we discuss the effects of disturbance forces and noises on the system,and summarize various analysis and modeling methods for these interferences,including the integral method,frequency domain analysis method,and magnitude evaluation *** analyzing the impact of disturbances and noises on the system,the paper also summarizes the system’s performance under slight ***,we highlight current research difficulties in the field of dFACS noise ***,this paper provides valuable insights into the modeling and analysis of disturbances and noises in dFACSs,and identifies key areas for future research.

关键词： drag-free dFACS disturbance Analysis Noise Analysis Frequency domain Analysis Performance Evaluation

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down-regulation of SEIPIN transcription attenuated the triacylglycerol accumulation in Nannochloropsis oceanica

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Journal of Oceanology and Limnology 2025年第1期43卷 187-195页

作者： Lixian LIU Li GUO Hang LIU Xiaohui PAN Yanan ZONG Leili FENG Guanpin YANG College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Institutes of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Key Laboratory of Marine Genetics and Breeding of Ministry of Education Ocean University of ChinaQingdao 266003China MoE Laboratory of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China

Abnormal content of protein SEIPIN causes Berardinelli-Seip congenital lipodystrophy type 2(BSCL2)in *** studies have shown that Arabidopsis thaliana has evolved three SEIPIN homologs,determining the fusion and size of lipid *** oceanica is a model oleaginous microalga with the accumulation potential of fatty *** believe that the SEIPIN homolog if any in *** should function as it does in humans,plant among *** this study,we identified a homologous gene of SEIPIN in ***,constructed a bacterial plasmid containing the elements controlling the transcription of its complete antisense rNA,and integrated the linearized plasmid into the *** *** obtained a transformant in which the abundance of SEIPIN transcript is significantly *** cytometry analysis showed that the triacylglycerol(TAG)content of the transformant is significantly lower than that of the wild type(WT).Transcriptomic analysis showed that the down-regulation of SEIPIN transcript abundance could affect the protein functioning in endoplasmic reticulum(Er),implying that SEIPIN gene can function in *** in a similar way to that in ***.

关键词： Nannochloropsis oceanica antisense rNA SEIPIN neutral lipid

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Extended light absorption and accelerated charge migration in ultrathin twisted carbon nitride nanoplates for efficient solar hydrogen production

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Science China Chemistry 2024年第7期67卷 2215-2223页

作者： Yanmin Zou Shiyao Li dandan Zheng Jianyong Feng Sibo Wang Yidong Hou Guigang Zhang State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350108China College of Environment and Safety Engineering Fuzhou UniversityFuzhou 350108China Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State MicrostructuresCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210093China

Polymeric carbon nitride has been widely developed as a promising photocatalyst for solar hydrogen production via photocatalytic water ***,pristine carbon nitride prepared by traditional solid-state polymerization usually encounters issues such as rapid carrier recombination and insufficient absorption of visible light below 460 ***,poly(heptazine imide)with a distinctive nanoplate structure was synthesized in a binary molten salt of NaCl–CaCl_(2).The salt template allows the formation of the thin nanoplate structure,which promotes the charge separation and ***,the intercalation of Ca^(2+)ions between the conjugated layers endows the activation of n–π*electron transition due to the distortion of in-plane heptazine ***,the optimized poly(heptazine imide)nanoplates achieve an apparent quantum efficiency of up to 17.3%at 500 nm for photocatalytic hydrogen production from *** work shares new idea for rational control of the optical absorption and charge carrier dynamics of poly(heptazine imide).

关键词： photocatalysis poly heptazine imide nanoplates ion intercalation hydrogen production

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BSAlign:A Library for Nucleotide Sequence Alignment

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Genomics, Proteomics & Bioinformatics 2024年第2期22卷 135-142页

作者： Haojing Shao Jue ruan Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China

Increasing the accuracy of the nucleotide sequence alignment is an essential issue in genomics *** classic dynamic programming(dP)algorithms(e.g.,Smith–Waterman and Needleman–Wunsch)guarantee to produce the optimal result,their time complexity hinders the application of large-scale sequence *** optimization efforts that aim to accelerate the alignment process generally come from three perspectives:redesigning data structures[e.g.,diagonal or striped Single Instruction Multiple data(SIMd)implementations],increasing the number of parallelisms in SIMd operations(e.g.,difference recurrence relation),or reducing search space(e.g.,banded dP).However,no methods combine all these three aspects to build an ultra-fast *** this study,we developed a Banded Striped Aligner(BSAlign)library that delivers accurate alignment results at an ultra-fast speed by knitting a series of novel methods together to take advantage of all of the aforementioned three perspectives with highlights such as active F-loop in striped vectorization and striped move in banded *** applied our new acceleration design on both regular and edit distance pairwise *** achieved 2-fold speed-up than other SIMd-based implementations for regular pairwise alignment,and 1.5-fold to 4-fold speed-up in edit distance-based implementations for long *** is implemented in C programing language and is available at https://***/ruanjue/bsalign.

关键词： Pairwise alignment Edit distance Striped vectorization Banded dynamic programming F evaluation

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MTTF: a multimodal transformer for temperature forecasting

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International Journal of Computers and Applications 2024年第2期46卷 122-135页

作者： Cao, Yang Zhai, Junhai Zhang, Wei Zhou, Xuesong Zhang, Feng Key Laboratory of Machine Learning and Computational Intelligence College of Mathematics and Information Science Hebei University Hebei Province Baoding China

Accurate weather forecasting is crucial for various applications, including agriculture and environmental monitoring. However, existing deep learning based methods typically use only temperature observations as input, which do not consider spatial location (e.g. neighboring regions usually show similar temperature trends) and increase the difficulty in predicting anomalous fluctuations in temperature. To address the issue, a multimodal transformer model for temperature forecasting is proposed. This model not only uses observational data (time series data) as input but also incorporates spatially rich ErA5 reanalysis temperature data (spatio-temporal data). The proposed method has two distinctive features: (1) a sequence merging module to highlight dominating features and reduce the cost of attention calculations. (2) a cross-all-modal attention mechanism to capture dependencies between the current modality and all modalities. The method was evaluated on three temperature datasets from a plain and two challenging high-altitude mountainous regions. results showed that the proposed method outperforms existing methods in terms of MAE and MSE, offering a promising new solution for temperature prediction. Our code and data are available at https://***/Adam618/MTTF. © 2023 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Weather forecasting

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Machine learning in laser-induced breakdown spectroscopy:A review

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Frontiers of physics 2024年第6期19卷 225-252页

作者： Zhongqi Hao Ke Liu Qianlin Lian Weiran Song Zongyu Hou rui Zhang Qianqian Wang Chen Sun Xiangyou Li Zhe Wang Key Laboratory of Nondestructive Testing(Ministry of Education) Nanchang Hangkong UniversityNanchang 330063China Wuhan National Laboratory for Optoelectronics(WNLO) Huazhong University of Science and TechnologyWuhan 430074China State Key Lab of Power System Department of Energy and Power EngineeringTsinghua-BP Clean Energy CentreTsinghua UniversityBeijing100084China School of Optics and Photonics Beijing Institute of TechnologyBeijing 100081China School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China School of Public Health Xinjiang Medical UniversityUrumqi 830054China The Second Medical College of Binzhou Medical University Yantai Affiliated Hospital of Binzhou Medical UniversityYantai264100China School of Electronic Engineering Naval University of EngineeringWuhan 430014China

Laser-induced breakdown spectroscopy(LIBS)is a spectroscopic analytic technique with great application potential because of its unique advantages for online/in-situ ***,due to the spatially inhomogeneity and drastically temporal varying nature of its emission source,the laser-induced plasma,it is difficult to find or hard to generate an appropriate spatiotemporal window for high repeatable signal collection with lower matrix *** quantification results of traditional physical principle based calibration model are unsatisfactory since these models were not able to compensate for complicate matrix effects as well as signal *** learning is an emerging approach,which can intelligently correlated the complex LIBS spectral data with its qualitative or/and quantitative composition by establishing multivariate regression models with greater potential to reduce the impacts of signal fluctuation and matrix effects,therefore achieving rela-tively better qualitative and quantitative *** this review,the progress of machine learning application in LIBS is summarized from two main aspects:(i)Pre-processing data for machine learning model,including spectral selection,variable reconstruction,and denoising to improve qualitative/quantitative performance;(ii)Machine learning methods for better quantification performance with reduction of the impact of matrix effect as well as LIBS spectra *** review also points out the issues that researchers need to address in their future research on improving the performance of LIBS analysis using machine learning algorithms,such as restrictions on training data,the disconnect between physical principles and algorithms,the low generalization ability and massive data processing ability of the model.

关键词： laser-induced breakdown spectroscopy machine learning repeatability matrix effects qualitative and quantitativeanalysis

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Fast algorithms for singular value decomposition and the inverse of nearly low-rank matrices

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national Science review 2023年第6期10卷 24-27页

作者： Chen Xu Weiwei Xu Kaili Jing Department of Mathematics and Statistics University of Ottawa School of Mathematics and Statistics Xi'an Jiao Tong University School of Mathematics and Statistics Nanjing University of Information Science and Technology

PrOBLEM Matrix computation is a fundamental task in science and engineering;it is recognized as one of the seven computational'giants'of massive data analysis [1],analogous to the seven'dwarfs'in highperformance *** recent years,as the scale of datasets rapidly grows,analysts and engineers frequently need to deal with big matrices with a nearly lowrank *** big size of a matrix brings great numerical hurdles to matrix *** this work,we focus on two typical tasks in matrix computation:singular value decomposition (SVd) and matrix inverse on nearly low-rank matrices that are potentially of big sizes.

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A Survey on an Emerging Safety Challenge for Autonomous Vehicles:Safety of the Intended Functionality

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Engineering 2024年第2期33卷 17-34页

作者： Hong Wang Wenbo Shao Chen Sun Kai Yang dongpu Cao Jun Li Tsinghua Intelligent Vehicle Design and Safety Research Institute School of Vehicle and MobilityTsinghua UniversityBeijing 100084China CogDrive Lab Department of Mechanical and Mechatronics EngineeringUniversity of WaterlooWaterlooON N2L3G1Canada College of Mechanical and Vehicle Engineering Chongqing UniversityChongqing 400044China

As the complexity of autonomous vehicles(AVs)continues to increase and artificial intelligence algorithms are becoming increasingly ubiquitous,a novel safety concern known as the safety of the intended functionality(SOTIF)has emerged,presenting significant challenges to the widespread deployment of *** focuses on issues arising from the functional insufficiencies of the AVs’intended functionality or its implementation,apart from conventional safety *** the systems engineering standpoint,this study offers a comprehensive exploration of the SOTIF landscape by reviewing academic research,practical activities,challenges,and perspectives across the development,verification,validation,and operation *** research encompasses system-level SOTIF studies and algorithm-related SOTIF issues and ***,it encapsulates practical SOTIF activities undertaken by corporations,government entities,and academic institutions spanning international and Chinese contexts,focusing on the overarching methodologies and practices in different ***,the paper presents future challenges and outlook pertaining to the development,verification,validation,and operation phases,motivating stakeholders to address the remaining obstacles and challenges.

关键词： Safety of the intended functionality Autonomous vehicles Artificial intelligence Uncertainty Verification Validation

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Scalable preparation of asymmetrical bilayer sulfide/halide electrolyte membranes for all-solid-state batteries with high voltage

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Science China(Technological Sciences) 2025年第3期68卷 97-109页

作者： Shenghao JING Yanchen LIU Yang LU Hanzhou LIU Yang LIU Siliang LIU Zongliang ZHANG Fangyang LIU School of Metallurgy and Environment Central South UniversityChangsha410083China Engineering Research Centre of Advanced Battery Materials Ministry of EducationChangsha410083China Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy Changsha410083China National Energy Metal Resources and New Materials Key Laboratory Changsha410083China Hunan Energy Frontiers New Materials Technology Co. Ltd.Changsha410208China

All-solid-state batteries(ASSBs)are considered to be the most promising candidates for improving battery safety and energy *** electrolytes have a narrow electrochemical window,which hinders their applications coupled with high-voltage *** electrolytes with high-voltage endurance can help solve this ***,the combination of spraying and slurry-coating methods was adopted as a practical route to process a free-standing Li_(6)PS_5Cl(LPSCl)asymmetrical electrolyte membrane(19.23Ωcm~2,75μm)decorated with a 10μm Li_(3)In Cl_(6)(LICl)*** LICl-LPSCl asymmetrical electrolyte membranes enhanced the high-voltage stabilities to match those of LiNi_(0.83)Co_(0.11)Mn_(0.06)O_(2)(NCM811)and Li_(1.2)Ni_(0.13)Co_(0.13)Mn_(0.54)O_(2)(LrMO)*** NCM811|LICl-LPSCl|n Si ASSB achieved an initial coulombic efficiency(ICE)of 85.13%and a capacity retention of 77.16%after 200 *** with the LPSCl membrane,the LICl-LPSCl membrane displayed high stability with the LrMO cathode as the charging cut-off voltage increased to 4.7 V,which improved the initial charge capacity from 143 to 270 mAh g^(-1)and achieved stable cycling of 160 m Ah g^(-1)at 0.5 ***,we attempted continuous LICl-LPSCl membrane production and utilized the product to fabricate a pouch-type ASSB based on *** fabrication of the LICl-LPSCl electrolyte membrane demonstrated its potential for controllable and industryadaptable applications in ASSBs.

关键词： all-solid-state batteries halide electrolyte sulfide electrolyte high-voltage asymmetrical

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Bisulfite-mediated base-free decarboxylative carbonylsulfination of alkenes:access toβ-keto sultines

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Science China Chemistry 2025年第2期68卷 622-630页

作者： Yongxin Zhang Pan Zhou Xinyue Ma Xiaoxiao Yang Xing Fang Yuxi Wang Chao Shu State Key Laboratory of Green Pesticide Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon ReductionCCNU-uOttawa Joint Research CentreCollege of ChemistryCentral China Normal University(CCNU)Wuhan 430079China Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Normal UniversityWuhu 241000China

A straightforward three-component decarboxylative cross-coupling ofα-keto acids,alkenes and sodium bisulfite is established for the construction of otherwise challenging-to-accessβ-keto sultine *** reaction involves the photoinduced carbonylsulfination of alkenes and utilizes sodium bisulfite as both a sulfur dioxide surrogate and buffer agent for deprotonation ofα-keto carboxylic *** note,the practical procedure featured broad substrate scope and group tolerance for diverse biologically important molecules under mild and operationally simple conditions,using an organic *** studies indicated that the transformation proceeds an apparent two-pronged radical addition/radical-polar crossover/SO_(2) insertion/ionic cyclization relay process,distinct from traditional alkenes bifunctionalization.

关键词： photoredox catalysis β-keto sultines carbonylsulfination sodium bisulfite radical

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