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Passive activity enhances residual control ability in patients with complete spinal cord injury

Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He Jia Zheng Hongming Bai Jia-Sheng Rao Guiyun song wei song Xiaoguang Li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

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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).

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Representation learning in discourse parsing:A survey

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Science China(Technological Sciences) 2020年第10期63卷 1921-1946页

作者： song wei LIU LiZhen College of Information Engineering and Academy for Multidisciplinary Studies Capital Normal UniversityBeijing 100056China

Neural network based deep learning methods aim to learn representations of data and have produced state-of-the-art results in many natural language processing(NLP)*** parsing is an important research topic in discourse analysis,aiming to infer the discourse structure and model the coherence of a given *** survey covers text-level discourse parsing,shallow discourse parsing and coherence *** first introduce the basic concepts and traditional approaches,and then focus on recent advances in discourse structure oriented representation *** also introduce a trend of discourse structure aware representation learning that is to exploit discourse structures or discourse objectives for learning representations of sentences and documents for specific applications or for general ***,we present a brief summary of the progress and discuss several future directions.

关键词： discourse analysis discourse parsing discourse relation coherence assessment representation learning

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Morphological structure and peripheral innervation of the lateral line system in the Siberian sturgeon (Acipenser baerii)

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Integrative Zoology 2012年第1期7卷 83-93页

作者： wei song Jiakun song Institute for Marine Biosystem and Neuroscience Shanghai Ocean UniversityShanghaiChina

Light and scanning electron microscopy(SEM)were used to study the epidermal lateral line system of the Si-berian sturgeon(Acipenser baerii Brandt,1869).This system consists of mechanoreceptive neuromasts,ampul-lae and the electroreceptive *** neuromasts are located in 5 pairs of cephalic and 1 pair of trunk canals and superficially in the middle and posterior pit lines that lie dorsomedially along the top of the skull immedi-ately adjacent to the otic ampullae *** canal neuromasts and pit organ superficial neuromasts have oppo-site polarized hair cells that are parallel along the axis of the canal and pit line,***,they dif-fer in both size and shape and in the density and length of the hair *** ampullae are confined on the head,adjacent to the neuromast *** morphological structure of the ampullae in the Siberian sturgeon is similar to the ampullae in elasmobranchs and other primitive ***,it has a relatively large mucus-filled ampulla,and a shorter and narrower canal leading to a small opening to the outer epidermal *** also present new information concerning the peripheral innervation of lateral line receptors in *** re-ceptors of the lateral line system are innervated by 2 pairs of cranial nerves:anterior and posterior lateral line *** peripheral processes of the anterior lateral line nerve form superficial ophthalmic,buccal,otic and anteroventral *** peripheral processes of the posterior lateral line nerve form middle,supratemporal and lateral rami.

关键词： canal neuromasts electroreceptors lateral line nerves mechanoreceptors pit organ superficial neuromasts sturgeon

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Research progress of catalysts for direct coal liquefaction

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Journal of Energy Chemistry 2025年第1期 481-497页

作者： wei song Penggao Liu Xinyue Chen Ting Wang Chunrong He Rui Hao Kaiyu Liu State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University College of Chemistry and Chemical Engineering Henan Polytechnic University Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical Engineering Central South University

Coal direct liquefaction technology is a crucial contemporary coal chemical technology for efficient and clean use of coal resources. The development of direct coal liquefaction technology and the promotion of alternative energy sources are important measures to guarantee energy security and economic security. However, several challenges need to be addressed, including low conversion rate, inadequate oil yield, significant coking, demanding reaction conditions, and high energy consumption. Extensive research has been conducted on these issues, but further exploration is required in certain aspects such as pyrolysis of macromolecules during the liquefaction process, hydrogen activation, catalysts' performance and stability, solvent hydrogenation, as well as interactions between free radicals to understand their mechanisms better. This paper presents a comprehensive analysis of the design strategy for efficient catalysts in coal liquefaction, encompassing the mechanism of coal liquefaction, catalyst construction,and enhancement of catalytic conversion efficiency. It serves as a comprehensive guide for further research endeavors. Firstly, it systematically summarizes the conversion mechanism of direct coal liquefaction, provides detailed descriptions of various catalyst design strategies, and especially outlines the catalytic mechanism. Furthermore, it addresses the challenges and prospects associated with constructing efficient catalysts for direct coal liquefaction based on an understanding of their action mechanisms.

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Concentration Scheme for Partially Entangled Atomic States Through Detection of Cavity Decay

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Communications in Theoretical Physics 2008年第5期49卷 1221-1224页

作者： song wei Institute for Condensed Matter Physics School of Physics and Telecommunication Engineering South China Normal University Guangzhou 510006 China Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics University of Science and Technology of China Hefei 230026 China

We propose a scheme for concentrating entanglement of partially entangled states for atoms trapped in the distant cavities. The scheme is based on adiabatic passage and photonic interference. It is robust against a number of practical noises such as the violation of the Lamb-Dicke condition, spontaneous emission and detection inefficiency.

关键词： entanglement concentration cavity QED

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An application of matching pursuit time-frequency decomposition method using multi-wavelet dictionaries

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Petroleum Science 2012年第3期9卷 310-316页

作者： Zhao Tianzi song wei Library of China University of Petroleum Beijing 102249China CNPC Key Laboratory of Geophysical Exploration China University of PetroleumBeijing 102249China

In the time-frequency analysis of seismic signals, the matching pursuit algorithm is an effective tool for non-stationary signals, and has high time-frequency resolution and a transient structure with local self-adaption. We expand the time-frequency dictionary library with Ricker, Morlet, and mixed phase seismic wavelets, to make the method more suitable for seismic signal time-frequency decomposition. In this paper, we demonstrated the algorithm theory using synthetic seismic data, and tested the method using synthetic data with 25% noise. We compared the matching pursuit results of the time-frequency dictionaries. The results indicated that the dictionary which matched the signal characteristics better would obtain better results, and can reflect the information of seismic data effectively.

关键词： Matching pursuit seismic attenuation wavelet transform Wigner Ville distribution time- frequency dictionary

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Trajectory and attitude deviations for internal store separation due to unsteady and quasi-steady test method

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Chinese Journal of Aeronautics 2022年第2期35卷 74-81页

作者： wei song Jingang DONG wei LU Zenghui JIANG Aerodynamic Science Center China Academy of Aerospace AerodynamicsBeijing 100074China

The deviations of trajectory and attitude angle for internal store separation are evaluated by two wind tunnel test *** is the Freedrop Test(FDT),which is known as unsteady and time-dependent method of scaled *** other is the Captive Trajectory System(CTS)test,which is usually regarded as a quasi-steady and time-averaged test *** result shows that there is a streamwise adverse pressure gradient on the cavity resulting in a nose-up pitching moment coefficient(>0)acting on the store *** the initial pitch angular velocity is 0,the store exits the shear-layer with a nose-up pitch attitude causing the store to climb back towards and collide with the ***,the store passes through the shear-layer into the freestream with a nose-down pitch,which causes a successful separation event when the initial pitch angular velocity<*** pitch angle obtained by unsteady test method is different from that by quasisteady test *** time-dependent test includes the aerodynamic force induced by pitch angular velocity whereas the time-averaged method(CTS)cannot reflect the effect of unsteady aerodynamic *** deviation of vertical displacement is not obvious for FDT and CTS test since the store has an initial vertical velocity,which is dominant for the vertical *** means that the highly unsteady flow can create unpredictability in aerodynamic pitching moment of the store,which can lead to the deviation of pitch angle for internal store separation.

关键词： Captive trajectory system Freedrop test Internal weapons Store separation Unsteady test method

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High-precision magnetic field measurement system based on a coherent population trapping magnetometer onboard the SATech-01 satellite

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Science China Technological Sciences 2025年

作者： Hongbo XUE wei song Haoran ZHAO Yiteng ZHANG Shanzhi YE Jindong WANG Ran TAO Peng SANG Keli CHEN Xingzi BI Bingjun CHENG Bin ZHOU Yongliang XUE Yingying TANG Liu LIU Jinsong LI Xiaocheng ZHU Baoquan LI Jinguo LIU Wen CHEN Xiaofeng ZHANG Yonghe ZHANG Lei LI State Key Laboratory of Space Weather National Space Science Center Chinese Academy of Sciences Key Laboratory of Solar Activity and Space Weather National Space Science Center Chinese Academy of Sciences Key Laboratory of Electronics and Information Technology for Space Systems National Space Science Center Chinese Academy of Sciences State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Innovation Academy for Microsatellites Chinese Academy of Sciences

On July 27, 2022, a high-precision system for measuring the magnetic field based on a coherent population trapping magnetometer（referred to as the CPT system） was launched onboard the Space Advanced Technology demonstration satellite（SATech-01） by a ZK-1A rocket. The payload comprises a scalar coherent population trapping magnetometer（CPTM）, triaxial anisotropic magnetoresistance magnetometer（AMRM）, and nano star tracker mounted on a non-magnetic telescopic tubular mast. This configuration enables synchronized measurement of scalar and vector geomagnetic fields, as well as the attitude,making the payload with its compact sensors suitable for applications on miniature satellite platforms. On November 7, 2022,the novel telescopic tubular mast was deployed in orbit, extending to a length of 5.28 m. The CPTM, an absolute scalar magnetometer with an omnidirectional sensor, is the first China-developed quantum/atomic magnetometer successfully operating in space. In orbit, the CPTM has sensitivity of ～10 pT/Hz1/2and can automatically operate under complex magnetic field variations. The difference between the scalar fields obtained using the CPTM and CHAOS model has a mean deviation of–3.73 n T and a standard deviation of 26.11 nT（1σ）, without on-orbit calibration or correction. The miniaturized AMRM has a sensitivity of ～0.3 n T/Hz1/2and maintains stable and reliable operation in orbit. The low-power and miniaturized nano star tracker has a measurement uncertainty of 14.23″（1σ） in orbit. The mission has realized the on-orbit technical verification of the integrated and synchronized detection of the vector magnetic field and attitude and fully validated the system's performance,automation level, and reliability.

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Chinese Medicines in Diabetic Retinopathy Therapies

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Chinese Journal of Integrative Medicine 2019年第4期25卷 316-320页

作者： song wei ZHU Yong-wei Department of Ophthalmology Jiaxing Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical UniversityZhejiang Province(314000)China

Diabetic retinopathy(DR),a chronic microvascular retinal disorder leading to retinal nonperfusion and ischemia,is one of the leading causes of blindness among individuals of working ***?ammation and neovascularization play important roles in the development of DR,especially proliferative DR(PDR).Therapies with Chinese medicines(CMs) that improve microcirculation complementary to conventional treatments increase the chances of delaying PDR development and improving visual acuity in diabetes *** review aimed to introduce promising CMs targeting DR patients in clinical practice,together with their underlying molecular mechanisms.

关键词： diabetic retinopathy Chinese medicine inflammation neovascularization

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