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An Artificial Intelligence‑Assisted Flexible and Wearable Mechanoluminescent Strain Sensor System

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Nano-Micro Letters 2025年第3期17卷 217-231页

作者： Yan Dong wenzheng an Zihu Wang Dongzhi Zhang College of Control Science and Engineering China University of Petroleum(East China)Qingdao 266580People’s Republic of China

The complex wiring,bulky data collection devices,and difficulty in fast and on-site data interpretation significantly limit the practical application of flexible strain sensors as wearable *** tackle these challenges,this work develops an artificial intelligenceassisted,wireless,flexible,and wearable mechanoluminescent strain sensor system(AIFWMLS)by integration of deep learning neural network-based color data processing system(CDPS)with a sandwich-structured flexible mechanoluminescent sensor(SFLC)*** SFLC film shows remarkable and robust mechanoluminescent performance with a simple structure for easy *** CDPS system can rapidly and accurately extract and interpret the color of the SFLC film to strain values with auto-correction of errors caused by the varying color temperature,which significantly improves the accuracy of the predicted strain.A smart glove mechanoluminescent sensor system demonstrates the great potential of the AIFWMLS system in human gesture ***,the versatile SFLC film can also serve as a encryption *** integration of deep learning neural network-based artificial intelligence and SFLC film provides a promising strategy to break the“color to strain value”bottleneck that hinders the practical application of flexible colorimetric strain sensors,which could promote the development of wearable and flexible strain sensors from laboratory research to consumer markets.

关键词： Mechanoluminescent Strain sensor Flexible Deep learning Wireless

Compressive sensing based multiuser detector for massive MBM MIMO uplink

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Journal of Systems Engineering and Electronics 2020年第1期31卷 19-27页

作者： SONG Wei WANG wenzheng School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China School of Electronics Engineering and Computer Science Peking UniversityBeijing 100871China

Media based modulation(MBM)is expected to be a prominent modulation scheme,which has access to the high data rate by using radio frequency(RF)mirrors and fewer transmit *** with multiuser multiple input multiple output(MIMO),the MBM scheme achieves better performance than other conventional multiuser MIMO *** this paper,the massive MIMO uplink is considered and a conjunctive MBM transmission scheme for each user is *** conjunctive MBM transmission scheme gathers aggregate MBM signals in multiple continuous time slots,which exploits the structured sparsity of these aggregate MBM *** this kind of scenario,a multiuser detector with low complexity based on the compressive sensing(CS)theory to gain better detection performance is *** detector is developed from the greedy sparse recovery technique compressive sampling matching pursuit(CoSaMP)and exploits not only the inherently distributed sparsity of MBM signals but also the structured sparsity of multiple aggregate MBM *** exploiting these sparsity,the proposed CoSaMP based multiuser detector achieves reliable detection with low *** results demonstrate that the proposed CoSaMP based multiuser detector achieves better detection performance compared with the conventional methods.

关键词： media based modulation(MBM) radio frequency(RF)mirror compressive sensing(CS) multiple input multiple output(MIMO) multiuser detector compressive sampling matching pursuit(CoSaMP).

Protein acetylation sites with complex-valued polynomial model

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Frontiers of Computer Science 2024年第3期18卷 217-226页

作者： wenzheng BAO Bin YANG School of Information Engineering Xuzhou University of TechnologyXuzhou 221018China School of Information Science and Engineering Zaozhuang UniversityZaozhuang 277160China

Protein acetylation refers to a process of adding acetyl groups(CH3CO-)to lysine residues on protein *** one of the most commonly used protein post-translational modifications,lysine acetylation plays an important role in different *** our study,we developed a humanspecific method which uses a cascade classifier of complexvalued polynomial model(CVPM),combined with sequence and structural feature descriptors to solve the problem of imbalance between positive and negative *** gene expression programming and differential evolution are utilized to search the optimal CVPM *** also made a systematic and comprehensive analysis of the acetylation data and the prediction *** performances of our proposed method are 79.15%in Sp,78.17%in Sn,78.66%in ACC 78.76%in F1,and 0.5733 in MCC,which performs better than other state-of-the-art methods.

关键词： protein acetylation complex-valued polynomial model machine learning

Experimental Study on Diesel Spray and Flame Asymmetry Characteristics of Dual-Orifice Nozzles for a Medium-Speed Engine

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Journal of Thermal Science 2025年第1期 303-322页

作者： JU Dehao LIU Rui ZHENG Liang DENG Jiahui ZHANG wenzheng HUO Jinlu HUANG Li Shanghai Marine Diesel Engine Research Institute National Key Laboratory of Marine Engine Science and Technology Key Laboratory for Power Machinery and Engineering Ministry of EducationShanghai Jiao Tong University

The asymmetry of the multi-orifice spray will cause uneven heat load of the marine diesel engine,thereby affecting its working performance and service ***,an in-depth understanding of the spray and flame characteristics of multi-orifice nozzles will guide the optimization of the nozzle structure,needle design and diesel atomization and combustion *** this reason,four groups of dual-orifice nozzles with different hole diameters(0.1-0.55 mm) and mass flow rates covering the typical marine medium-speed diesel injections are designed and customized,and the constant volume chamber(CVC) with high temperature and pressure is used to simulate the actual in-cylinder working conditions of the diesel engine for the spray visualization *** study the asymmetry of the fuel sprays discharged from a diesel injector,the multi-orifice nozzle is simplified as a dual-orifice nozzle in this *** with X-ray Computed Tomography(CT) imaging technology,the influences of the nozzle internal structure on the spray and flame asymmetry are studied in the constructed supercritical *** is found that the asymmetry of the inlet angle and the equivalent length-diameter ratio is positively correlated with the inconsistency of the dual *** an increase in the injection pressure and nozzle diameter,the asymmetry of the dual spray becomes more pronounced,resulting in greater disparities in the ignition delay times and ignition positions of the two ***,the increase in nozzle diameter also leads to combustion instability,resulting in a flame with a serrated *** the increase of ambient temperature,the proportion of liquid phase in the jet decreases and the relative density of spray front decreases.

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Imp Raft:a consensus algorithm based on Raft and storage compression consensus for IoT scenario

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The Journal of China Universities of Posts and Telecommunications 2020年第3期27卷 53-61页

作者： Li wenzheng He Mingsheng Faculty of Information Technology Beijing University of TechnologyBeijing 100124China

In order to meet various challenges in the Internet of things(IoT),such as identity authentication,privacy preservation of distributed data and network security,the integration of blockchain and IoT became a new trend in recent *** the key supporting technology of blockchain,the consensus algorithm is a hotspot of distributed system *** present,the research direction of the consensus algorithm is mainly focused on improving throughput and reducing ***,when blockchain is applied to IoT scenario,the storage capacity of lightweight IoT devices is limited,and the normal operations of blockchain system cannot be *** solve this problem,an improved version of Raft(Imp Raft)based on Raft and the storage compression consensus(SCC)algorithm is proposed,where initialization process and compression process are added into the flow of ***,the data validation process aims to ensure that blockchain data cannot be tampered *** is obtained from experiments and analysis that the new proposed algorithm can effectively reduce the size of the blockchain and the storage burden of lightweight IoT devices.

关键词： consensus algorithm Kafl Internet of things(IoT) blockchain

Identification of Secondary Dislocations by Singular Value Decomposition of the Nye Tensor

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Acta Metallurgica Sinica(English Letters) 2014年第6期27卷 1078-1082页

作者： Fuzhi Dai wenzheng Zhang Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University

Recently, we proposed the use of singular values and singular vectors of the Nye tensor to specify the features of dislocations. To further validate the method in identifying dislocations, the algorithm is applied to detect secondary dislocations in this paper. Different from the perfect and partial dislocations where the reference state is a single crystal, the reference state for detecting secondary dislocations should be a bi-crystal in a coincident coherent state. It is demonstrated that the secondary dislocations in an interface can be correctly identified when the reference state is appropriately selected.

关键词： Nye tensor Singular value decomposition Secondary dislocation

General principle of high-quality academic development of traditional chinese medicine:“carrying on the essence,while pursuing innovations”

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Journal of Traditional Chinese Medicine 2023年第1期43卷 1-2页

作者： SUN wenzheng SUN Guangrong Sun Guangrong Academic Experience Inheritance Studio of Beijing Tongrentang Hospital of Traditional Chinese Medicine Beijing 100051China Beijing University of Chinese Medicine Beijing 100029China

General Secretary XI Jinping emphasized in the 60th anniversary of the establishment of the China Academy of Chinese Medical Sciences,that“Traditional Chinese medicine(TCM)is a treasure of ancient Chinese science and... 详细信息

关键词： carrying golden Secretary

Tunable low frequency band gaps and sound transmission loss of a lever-type metamaterial plate

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Applied Mathematics and Mechanics(English Edition) 2022年第8期43卷 1145-1158页

作者： wenzheng QUE Xiaodong YANG Wei ZHANG Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Structures Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China

A novel metamaterial plate with subwavelength lever-type resonators is proposed to obtain low frequency broadband band gaps and good sound insulation *** band structure is theoretically derived,and the validity of the theoretical method is verified by the finite element *** formation mechanisms of the band gaps are illustrated by the analysis of the effective dynamic mass density and group *** effect of the lever ratio on the band gaps is *** results indicate that as the lever ratio increases,the first band gap shifts to lower frequencies,while the bandwidth is ***,the sound insulation performance of the proposed metamaterial plate is evaluated via examining the sound transmission loss(STL).Compared with the metamaterial plates without lever accessories,the proposed metamaterial plates with a suitable lever ratio have better sound insulation performance at low frequencies.

关键词： tunable band gap metamaterial plate lever-type resonator low frequency broadband sound transmission loss(STL)

A systematic analysis of good matching sites between two lattices

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Science China(Technological Sciences) 2012年第5期55卷 1343-1352页

作者： YANG XiaoPeng ZHANG wenzheng Laboratory of Advanced Materials Department of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

The geometrical matching/mismatching of lattices overlapped in 1, 2 and 3 dimensions have been analyzed systematically by variation of lattice misfit in a large range, far beyond the limits for semicoherent interfaces. In order to evaluate the degree of matching, the density of good matching site （GMS） between two lattices is calculated. The analysis shows that the GMS density remains approximately constant, irrespectively to the degree of lattice misfit. This constant, defined as the average GMS density, decreases exponentially with the increasing dimension of misfit. Typically, for 6 = 15%, the average GMS densities are approximately 30%, 7%, and 1.4% for 1D, 2D, and 3D lattice misfits, respectively. The GMS density deviates significantly if a CSL of small X can be defined. The relationship between the GMS distribution and O-lattice is investigated. It indicates that an abrupt increase in the GMS density in an interface parallel to a principal O-lattice plane is equivalent to a reduction of dimension of misfit. This shows the agreement between the selections of principal O-lattice planes as candidates of the preferred interfaces and the condition that interfaces with high GMS density are preferred.

关键词： good matching sites (GMS) O-lattice near-coincidence sites (NCS) structure ledge coincidence site lattice (CSL)