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8th CAA International Conference on Vehicular Control and Intelligence, CVCI 2024

作者： Wu, Dongmei Liu, Zixuan Yan, Taowei Zhang, Pei Wuhan University of Technology Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan China Dongfeng Motor Corporation Dongfeng Research and Development Center Passenger Vehicle Platform Center Wuhan China

ISBN: (纸本)9798331504892

To address the issue of vehicle speed estimation, particularly at low speeds, applicable to various environmental conditions, especially in the absence of driven wheels for vehicles equipped with four-wheel drive systems, a rule-based wheel speed identification and vehicle speed estimation method is proposed. This technique leverages wheel speed sensors and longitudinal acceleration sensors for vehicles to enhance the precision of wheel speed identification at low speeds and enhance the adaptability of vehicle speed estimation under different conditions. Firstly, to tackle the problem of no wheel speed pulse signal passing within one sampling period at low speeds, estimation is achieved through time accumulation, enabling effective wheel speed identification for both high and low-speed. Furthermore, utilizing the Kalman filtering algorithm and Butterworth filter, the wheel speed and wheel acceleration are filtered separately to reduce signal fluctuations caused by noise interference, thereby providing reliable input signals for estimating vehicle speed. Building upon this, A method for estimating vehicle speed based on the gradient constraint approach is proposed, taking into account the sequential relationships of each wheel speed and the longitudinal acceleration signal. Finally, real vehicle tests under different conditions demonstrate that the proposed vehicle speed estimation technique achieves high estimation accuracy, meeting the vehicle's speed estimation requirements under various environmental factors. © 2024 IEEE.

关键词： Butterworth filters

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Hollow tubular-structured molybdenum diselenide/carbon hybrid decorated by titanium dioxide nanoparticles for superior lithium-ion storage

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稀有金属（英文版） 2025年第2期44卷 879-888页

作者： Ren-Quan Hu Yi-Fan Qin Jing-Xuan Li Peng Zhang Ning Zhao Teng Wang Ya-Qi Xu Qing-Yang Mu Yong Yang Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi'an 710072China National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology Baotou 014000China

One-dimensional nanomaterials with hollow structures could provide large space for ion storage and charge ***,TiO2/MoSe2-Carbon nan-otube composite(NT)materials were designed and fabri-cated by the template method and the chelation coordination *** stability and conductivity were improved by the presence of titanium and hollow tubular-architecture carbon in the whole *** a result,the as-prepared TiO2/MoSe2-Carbon hybrid achieved a high-rate performance of 760.0 mAh·g-1 at a current density of 0.1 A·g-1,while still obtaining stability after 300 charge/discharge *** enhancement of the lithium storage capacity mainly contributed to the acceleration of the electron conductivity and the storage ***,the hollow structure reduced the volume strain and stress caused by the rapid insertion and removal of lithium ions,which ensured the favorable stability of lithium *** experiment shows that the kinetic of the TiO2/MoSe2-carbon hybrid during the lithium storage process is domi-nated by the pseudocapacitance *** work provides a new idea and scheme for the design and preparation of hierarchical nanotube composite electrode materials.

关键词： Hollow structure Hierarchical structure Carbon nanotubes MoSe2 nanosheets Lithium-ion batteries

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Flexible Neuromorphic Devices Based on Two-Dimensional Transition Metal Dichalcogenides

IEEE Journal on Flexible Electronics

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IEEE Journal on Flexible Electronics 2024年第1期3卷 10-28页

作者： Ma, Xin-Qi Ding, Guanglong Niu, Wenbiao Jia, Ziqi Han, Su-Ting Kuo, Chi-Ching Zhou, Ye Institute for Advanced Study Shenzhen University Shenzhen518060 China Shenzhen University College of Electronics and Information Engineering Shenzhen518060 China Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile Technology National Taipei University of Technology Taipei10608 Taiwan

The development of artificial intelligence has continuously amplified the demand for neuromorphic computing and memory. However, the separation of computing and memory units in the traditional von Neumann architecture and the slowdown of Moore's Law led to high power consumption and time delay in the handling of a large amount of data, which cannot meet the urgent needs of efficient and high-speed computing in the current rapid development of information technology. It is urgent to develop a novel computing paradigm to meet the challenge. Brain-inspired neuromorphic devices based on memory and computing-integrated architecture have the advantages of high parallelism and ultralow power consumption and are expected to overcome the von Neumann bottleneck. This article reviews the latest advances in flexible neuromorphic devices implemented by emerging transition metal dichalcogenide (TMDC) materials, from device design to system integration. First, the material structures/properties and synthetic methods of TMDCs are introduced. Then, the applications of TMDCs in flexible neuromorphic devices (artificial synapses and neurons) are discussed in detail. Furthermore, the potential applications of flexible neuromorphic devices for sensory recognition, including visual, tactile, auditory, and multisensory, are elaborated. Finally, the challenges in materials preparation, processing compatibility, device size miniaturization, energy consumption, and the prospect of future applications of flexible neuromorphic devices based on TMDCs are summarized. © 2022 IEEE.

关键词： Substrates

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Dry basal plane graphene wrappings on spherical nickel-rich oxide layered particles for lithium-ion batteries

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Journal of Energy Chemistry 2025年第5期104卷 10-19页

作者： Van-Chuong Ho Thanh N.Huynh Thi Huong Pham Hyun-seung Kim Hun-Gi Jung Ki Jae Kim Seung-Min Oh Young-Jun Kim Junyoung Mun School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySeobu-roJangan-guSuwon-siGyeonggi-do 2066Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan UniversitySuwonRepublic of Korea Advanced Batteries Research Center Korea Electronics Technology Institute25Saenari-roSeongnam 13509Republic of Korea Energy Storage Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea KIST-SKKU Carbon-Neutral Research Center Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea Battery Cell Development Team 1 Research&Development DivisionHyundai Motor Company150Hyundaiyeonguso-roNamyang-eupHwaseong-siGyeonggi-do 18280Republic of Korea Department of Nano Engineering Sungkyunkwan UniversitySuwonRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-do 16419Republic of Korea

Particle-to-particle dry graphene coatings on Ni-rich layered oxide materials are proposed for highenergy lithium-ion batteries(LIBs)to mitigate the inherent and engineering challenges related to the electrochemically fragile surfaces,as well as limiting electrode thickness and *** a shear stress-based coating process without supplementary solvent or heat treatment,graphene sheets derived from graphene powder are applied onto the surface of spherical LiNi_(0.89)Co_(0.055)Mn_(0.055)O_(2)(NCM)*** process achieves a coating thickness equivalent to or fewer than 10 layers of graphene and exposes the basal *** graphene-coated material increases particle hardness and mitigates degradation caused by inter-particle pressure,enabling the formation of high-density electrodes without *** the absence of additional carbon-conducting agents for the high-density composite electrode with a density of 4.0 g cm^(-3),it significantly enhances rate capability,demonstrating more than 5 times improvement by achieving 149.4 mAh g^(-1)at 2 C compared to the bare sample(28.9 mAh g^(-1)).Furthermore,the dry graphene coating enables the high areal capacity of 6.98 mAh cm^(-2).By exposing the basal plane of the graphene coating,the process enhances chemical stability,effectively inhibiting side reactions at the interface and mitigating cycle degradation.

关键词： Dry graphene coating Basal-plane coating Particle-to-particle High electrical conductivity High areal capacity

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Structural parameters and molecular model of Shendong subbituminous coal

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Chinese Journal of Chemical Engineering 2024年第12期76卷 124-134页

作者： Xiaoping Su Ning Li Longjian Li Reyila Tuerhong Yongchong Yu Ping Zhang Qiong Su Tao Shen Ming Sun Xiaoxun Ma Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission Gansu Provincial Biomass Function Composites Engineering Research CenterKey Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in University of Gansu ProvinceGansu Province Research Center for Basic Sciences of Surface and Interface ChemistryCollege of Chemical EngineeringNorthwest Minzu UniversityLanzhou 730124China School of Chemical Engineering Northwest UniversityInternational Science&Technology Cooperation Base of MOST for Clean Utilization of Hydrocarbon ResourcesChemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei EnergyShaanxi Research Center of Engineering Technology for Clean Coal ConversionCollaborative Innovation Center for Development of Energy and Chemical Industry in Northern ShaanxiXi'an 710069China

Coal has a highly complex chemical structure,similar to polymers,coal is a macromolecular structure composed of a large number of“similar compounds”,which is called the basic structural *** coal structure is the basis of its transformation and ***(SD)coal was analyzed by FTIR,XRD,XPS,and *** results show that SD coal normalized structure formula is C_(100)H_(68.5)O_(35.7)N_(1.2)S_(0.2)and the average number of aromatic rings is 1.98.-CH_(2)-content accounts for about 82%in aliphatic CeH region,and the ratio of ether bond CeO,aromatic ether C-O and C=O is about 2:1:11 in oxygen-containing functional group *** d_(002),L_(C),L_(a)and N_(C)of S_(D)coal microcrystalline structure parameters are 0.1832 nm,1.4688 nm,2.0852 nm and 9.017,*** carbon and aliphatic carbon ratios of SD coal are 55.67%and 29.97%,aromatic cluster size and average methylene chain length are 0.224 and *** on these structural parameters,molecular model of SD coal was constructed with^(13)C SSNMR experimental spectra as a *** model was constructed with an atom composition of C_(214)H_(214)O_(49)N_(2)S.

关键词： Subbituminous coal Structural parameters ^(13)C CP/MAS SSNMR Molecular model

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Continuous and Non-Contact Extraction of Respiratory Signal and Rate from Thermal Video 10

Continuous and Non-Contact Extraction of Respiratory Signal ...

引用

10th International Conference on Signal Processing and Intelligent Systems, ICSPIS 2024

作者： Saidi, Maryam Rezaei, Mohammad Beigzadeh, Maryam Mohammadian, Amin Lari, Abdolaziz Azizi Shahrood University of Technology Electrical Engineering Faculty Bioelectric Department Shahrood Iran Biosignals processing Group Research Center for Development of Advanced Technologies Tehran Iran

ISBN: (纸本)9798331532543

Achieving a simple, non-contact, non-invasive, and non-disruptive method for measuring and monitoring vital signs, including respiratory signals, is crucial in this field of research. This paper aims to implement algorithms for extracting respiratory signals and breathing rates from thermal facial images. Unlike many previous studies, where the algorithm was validated under resting conditions, this paper designs a protocol to capture a diverse range of respiratory activity datasets in varying conditions. Data were collected from six healthy individuals, with thoracic and abdominal contact-based respiratory signals used as reference signals. Processing steps, including robust facial tracking in thermal images and precise selection of target areas around the nose is implemented to extract respiratory signal and rates from the thermal video. The effectiveness of the proposed computational method is assessed through both quantitative and qualitative metrics, considering a variety of breathing patterns beyond just resting conditions. © 2024 IEEE.

关键词： Thermography (imaging)

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Study on coal pyrolysis characteristics by combining different pyrolysis reactors

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Chinese Journal of Chemical Engineering 2024年第12期76卷 1-9页

作者： Xiaoping Su Zhao Wang Ning Li Longjian Li Ping Zhang Ming Sun Xiaoxun Ma School of Chemical Engineering Northwest Minzu UniversityKey Laboratory of Environment-Friendly Composites of the State Ethnic Affairs CommissionGansu Provincial Biomass Function Composites Engineering Research CenterKey Laboratory for Utility of Environment-Friendly Composites and Biomass in Universities of Gansu ProvinceGansu Province Research Center for Basic Sciences of Surface and Interface ChemistryLanzhou 730030China School of Chemical Engineering Northwest UniversityInternational Science&Technology Cooperation Base of MOST for Clean Utilization of Hydrocarbon ResourcesChemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei EnergyShaanxi Research Center of Engineering Technology for Clean Coal ConversionCollaborative Innovation Center for Development of Energy and Chemical Industry in Northern ShaanxiXi'an 710069China

The pyrolysis process of Shendong coal(SD)was first studied by combining the characteristics of thermal gravimetric(TG),pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS)and Gray-King assay(GK).The results show that the order of coke yields is G-K(76.35%(mass))>TG(73.11%(mass))>Py(70.03%(mass)).G-K coke yield caused by condensation reaction and secondary reaction accounts for 3.08%(mass)and 3.24%(mass),*** with slow pyrolysis,fast pyrolysis has stronger fracture ability to coal molecules and can obtain more O-compounds,mono-ring aromatics and ***,the content of phenolics increases significantly from 15.49%to 35.17%,but the content of multi-ring aromatics decreases from 23.13%to 2.36%.By comparing the compositions of Py primary tar and G-K final tar,it is found that secondary reactions occurred during G-K pyrolysis process include the cleavage of alkane and esters,condensation of mono-ring aromatics with low carbon alkene,ring opening,isomerization of tri-ring aromatics,hydrogenation of aromatics and acids.

关键词： Shendong coal Different pyrolysis reactors Pyrolysis process

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Simulation method for large span heavy sea clutter in pulsed Doppler radar 4

Simulation method for large span heavy sea clutter in pulsed...

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4th International Conference on Computer Science and Communication technology, ICCSCT 2023

作者： Chen, Siyuan Hao, He Li, Ruirui Luo, Peike Yao, Shujian Shuai, Hanshu Zhang, Xinyin Advanced Communication and Flexible Information Processing Technology Research and Development Center Beijing Institute of Control Engineering Beijing100038 China

ISBN: (纸本)9781510671232

The clutter generated by multiple transmitting pulses overlaps in the time domain, which results in the two-dimensional aliasing of the range domain and Doppler spectrum of the clutter for the medium and high repetition frequency radar. In the simulation of different battlefield environments, a large number of range-Doppler grid units will be generated. It is necessary to establish a simulation model of aircraft based on GPU-CPU architecture to solve the track, attitude and radar parameters in real time to generate grid units, and then add antenna and sea situation information to calculate the cross-heavy sea clutter. This is of great significance for rapidly generating large span heavy sea clutter and improving the speed and reliability of sea clutter simulation. © 2023 SPIE.

关键词： Clutter (information theory)

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Unravelling precipitation behavior and mechanical properties of Al-Zn-Mg-Cu alloy

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Journal of Materials Science & technology 2025年第1期204卷 177-189页

作者： Sang-Hwa Lee Tae-Young Ahn Sung-Il Baik David NSeidman Seok-Jae Lee Young-Kook Lee Kwangjun Euh Jae-Gil Jung Division of Advanced Materials Engineering Jeonbuk National UniversityJeonju54896Republic of Korea Advanced Metals Division Korea Institute of Materials ScienceChangwon51508Republic of Korea Department of Materials Science and Engineering Yonsei UniversitySeoul03722Republic of Korea Materials Safety Research Division Korea Atomic Energy Research InstituteDaejeon34057Republic of Korea Department of Materials Science and Engineering Northwestern UniversityEvanstonIL60208USA Northwestern University Center for Atom-probe Tomography EvanstonIL60208USA Research Center for Advanced Materials Development Jeonbuk National UniversityJeonju54896Republic of Korea Graduate Institute of Ferrous&Eco Materials Technology Pohang University of Science and TechnologyPohang37673Republic of Korea

We investigate the effect of aging temperature on precipitation behavior and mechanical properties of an Al-7.6Zn-2.7Mg-2.0Cu-0.1Zr-0.07Ti(wt.%)alloy by evaluating the matrix’s microhardness,electrical resistivity,and tensile properties:additionally,employing X-ray diffraction(XRD),differential scanning calorimetry(DSC),transmission electron microscopy(TEM),and atom-probe tomography(APT)to charac-terize this *** nanoprecipitates forming under peak-aging conditions vary with aging temperature,forming coherent GPI zones at 80℃,GPII zones with minorη’at 120-150℃,andη’/ηwith minor GP zones at 180-220℃.GPI and GPII zones forming at 80-150℃ contain similar concentrations of solute atoms(11Zn-9Mg-(<1.0)Cu(at.%)),whereas theη’/ηnanoprecipitates forming at 180℃ contain larger concentrations of solute atoms(28Zn-24Mg-3.4Cu(at.%)).The strength of the peak-aged alloy decreases with increasing aging temperature owing to the increasing size and decreasing number density of the *** peak-aging conditions,precipitation strengthening originates mainly from dislo-cation shearing at 80-150℃ and from Orowan bypassing at temperatures above 180℃.The shearable to non-shearable transition of the nanoprecipitates at 180℃ reduces the strain hardening rate,thereby decreasing the alloy’s ductility.

关键词： Aluminum alloys Precipitation Tensile properties Transmission electron microscopy Atom probe tomography

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Fluorine-free Word Line Molybdenum Process for Enhancing Scalability and Reliability in 3D Flash Memory

Fluorine-free Word Line Molybdenum Process for Enhancing Sca...

引用

2024 IEEE Symposium on VLSI technology and Circuits, VLSI technology and Circuits 2024

作者： Fukushima, T. Kashima, T. Seto, S. Ohtori, H. Kato, M. Katou, K. Takehira, H. Sugawara, Y. Zhu, Z. Hara, K. Osanai, R. Beppu, T. Tahara, H. Ishiku, T. Takahashi, K. Ariga, T. Ueda, Y. Matamura, Y. Mukae, Y. Takeguchi, N. Maruyama, Y. Nishikawa, R. Kitagawa, H. Asakawa, J. Uchiyama, Y. Ohuchi, K. Sekine, K. Advanced Memory Development Center Japan Western Digital Corporation 800 Yamanoissiki-Cho Mie-Pref Yokkaichi512-8550 Japan Institute of Memory Technology Research & Development Kioxia Corporation Japan

ISBN: (纸本)9798350361469

A state-of-the-art fluorine-free word line (WL) molybdenum (Mo) process has been established for future 3D flash memory. Application of Mo to WLs can accelerate scaling of cells in both the vertical and horizontal directions with lower RC delay and lower leakage failure rates compared to traditional tungsten. In addition to being fluorine-free, key attributes of the process are optimization of Mo recess by innovative chemical and improvement of Mo filling to remove oxygen residue in Mo voids. These techniques can extend the scaling limit of 3D flash memory. © 2024 IEEE.

关键词： Fluorine free molybdenum oxygen scalability word line

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