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| 1 | Reliable transmission of consultative committee for space data systems file delivery protocol in deep space communication显示文摘In consultative committee for space data systems(CCSDS) file delivery protocol(CFDP) recommendation of reliable transmission,there are no detail transmission procedure and delay calculation of prompted negative acknowledge and asynchronous negative acknowledge models.CFDP is designed to provide data and storage management,story and forward,custody transfer and reliable end-to-end delivery over deep space characterized by huge latency,intermittent link,asymmetric bandwidth and big bit error rate(BER).Four reliable transmission models are analyzed and an expected file-delivery time is calculated with different trans-mission rates,numbers and sizes of packet data units,BERs and frequencies of external events,etc.By comparison of four CFDP models,the requirement of BER for typical missions in deep space is obtained and rules of choosing CFDP models under different uplink state informations are given,which provides references for protocol models selection,utilization and modification. | Hui Li Hao Luo Faxin Yu Zheming Lu | 2010 | Journal of Systems Engineering and Electronics2010，21，3： | 7 |
| 2 | Multipurpose Watermarking Algorithm for Secret Communication显示文摘 | LU Zheming LI Suzhi | 2006 | Chinese Journal of Electronics2006，15，1： | 3 |
| 3 | Crack dynamic propagation properties and arrest mechanism under impact loading显示文摘Crack dynamic propagation and arrest behaviors have received extensive attention over the years.However,there still remain many questions,e.g.under what conditions will a running crack come to arrest?In this paper,drop weight impact(DWI)tests were conducted to investigate crack arrest mechanism using single cleavage triangle(SCT)rock specimens.Green sandstone was selected to prepare the SCT specimens.Dynamic stress intensity factors(DSIFs)were calculated by ABAQUS code,and the critical DSIFs were determined by crack propagation speeds and fracture time measured by crack propagation gauges(CPGs).The test results show that the critical DSIF at propagation decreases with crack propagation speed.Numerical simulation for SCT specimens under different loading waves was performed using AUTODYN code.The reflected compressive wave from the incident and transmitted plates can induce crack arrests during propagation,and the number of arrest times increases with the wave length.In order to eliminate the effect of the incident and transmitted plates,models consisting of only one SCT specimen without incident and transmitted plates were established,and the same trapezoid-shaped loading wave was applied to the SCT specimen.The results show that for the SCT specimen with transmitted boundary(analogous to an infinite plate),the trapezoid-shaped loading wave cannot induce crack arrest anymore.The numerical results can well describe the occurrence of crack arrest in the experiments. | Yuqing Dong Zheming Zhu Li Ren Lei Zhou Peng Ying Meng Wang | 2020 | Journal of Rock Mechanics and Geotechnical Engineering2020，12，6： | 3 |
| 4 | Effect of disconnector and high-voltage conductor on propagation characteristics of PD-induced UHF signals显示文摘UHF(ultra high frequency)method has been widely used in PD(partial discharge)detection for its high sensitivity.The resonance,distortion,and attenuation appearing in the propagation process of UHF signals in GIS(gas insulated switchgear)will influence the real situation of PD detection.Therefore,it is necessary to investigate the effect of GIS components such as disconnectors or high voltage conductors on the propagation characteristics of PD-induced UHF signals in various voltage classes GIS.The factors of PD signals propagation characteristics in axial and radial directions are both analysed to avoid the effect caused by placement of sensor in this paper.First,the simulation models of GIS are built based on FDTD(finite difference time domain)method.Then the propagation characteristics of PD-induced UHF signals are studied in the GIS with different disconnector gap lengths and different high voltage conductor radii.Finally,the reliability of the simulation results is verified by compared with laboratory tests.The disconnector gap and the change of conductor radii can both result in the signals attenuation which rises highest in the direction of 180°.The lower the GIS class voltage is,the larger the attenuation of signals after passing through disconnector gap is. | Minxia Shi Xutao Han Xuanrui Zhang Zheming Zhang Junhao Li | 2018 | High Voltage2018，3，3： | 2 |
| 5 | Study on the mechanism of zonal disintegration around an excavation显示文摘 | Zheming Zhu Chao Wang Jiming Kang Yuanxin Li Meng Wang | 2014 | International Journal of Rock Mechanics and Mining Sciences2014，，： | 2 |
| 6 | FRAME: femtosecond videography for atomic and molecular dynamics显示文摘Many important scientific questions in physics,chemistry and biology require effective methodologies to spectroscopically probe ultrafast intra-and inter-atomic/molecular dynamics.However,current methods that extend into the femtosecond regime are capable of only point measurements or single-snapshot visualizations and thus lack the capability to perform ultrafast spectroscopic videography of dynamic single events.Here we present a laser-probe-based method that enables two-dimensional videography at ultrafast timescales(femtosecond and shorter)of single,non-repetitive events.The method is based on superimposing a structural code onto the illumination to encrypt a single event,which is then deciphered in a post-processing step.This coding strategy enables laser probing with arbitrary wavelengths/bandwidths to collect signals with indiscriminate spectral information,thus allowing for ultrafast videography with full spectroscopic capability.To demonstrate the high temporal resolution of our method,we present videography of light propagation with record high 200 femtosecond temporal resolution.The method is widely applicable for studying a multitude of dynamical processes in physics,chemistry and biology over a wide range of time scales.Because the minimum frame separation(temporal resolution)is dictated by only the laser pulse duration,attosecondlaser technology may further increase video rates by several orders of magnitude. | Andreas Ehn Joakim Bood Zheming Li Edouard Berrocal Marcus Aldén Elias Kristensson | 2017 | Light(Science & Applications)2017，6，1： | 2 |
| 7 | Influence of blasting load directions on tunnel stability in fractured rock mass显示文摘Tunnels in fractured rock masses are typically damaged by dynamic disturbances from various directions.To investigate the influence of blasting load directions on the stability of a tunnel with a precrack nearby,blasting tests were conducted on the physical models of an external crack around a tunnel(ECT)in this study.Failure modes of the tunnels were analysed based on stress wave theory.The Riedel-Hiermaier-Thoma(RHT)material model was employed to perform the numerical simulations on ECT models.Stress distribution around the tunnels and final failure patterns of the tunnels were characterised.The results show that,under blasting loads,the pre-crack propagates and then new cracks initiates on the incident side of the tunnel.These cracks extend towards each other and eventually coalesce.Blasting load directions significantly influence the ultimate failure mode of the tunnel in the fractured rock masses.The new cracks on the shadow side of the tunnel appear at different positions when the blasting stress waves come from various directions.The results are meaningful to the analysis of tunnel stability and optimisation of the tunnel support scheme. | Xiaohan Li Zheming Zhu Meng Wang Yun Shu Shuai Deng Dingjun Xiao | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，2： | 2 |
| 8 | Pre-expanded bipedicled visor flap:an ideal option for the reconstruction of upper and lower lip defects postburn in Asian males显示文摘Background:Reconstruction of upper and lower lip subunits is a complicated and elusive challenge.For patients affected by defects involving upper and lower lip subunits,a technique able to reconstruct both aesthetic units with matched colour,sufficient contours and similar texture would be ideal.In this study,we present our experience with upper and lower lip reconstruction using the pre-expanded bipedicled visor flap.Methods:From January 2014 to January 2017,12 male patients presenting with defects of the upper and lower lip subunits were treated using this surgical technique.After a period of expansion of the scalp flap of over 6 months,the bipedicled visor flap was raised from both the parietal regions and rotated to resurface the defect.Delay and section of the pedicle were then performed.Results:Twelve male patients with postburn scars aged 22 to 48 years(mean:34 years)were successfully treated with no major complications.The donor site was closed primarily in all cases.Subsequent flap debulking and minor revisions were performed under local anaesthesia between 6 and 12 months postoperatively.Conclusions:The pre-expanded bipedicled visor flap provides an effective and reliable option for upper and lower lip reconstruction with excellent colour and texture.It is feasible to achieve these results simultaneously from a single donor site by using a pre-expanded bipedicled visor flap. | Peiru Min Jie Li Beniamino Brunetti Zheming Pu Weijie Su Wenjing Xi Zheng Zhang Rosa Salzillo Shaoqing Feng Yixin Zhang | 2020 | Burns & Trauma2020，8，1： | 1 |
| 9 | Face recognition using Gabor-based complete kernel fisher discriminant analysis with fractional power polynomial models 显示文摘 | Li Junbao Pan J S Lu Zheming | 2009 | Neural Computing and Applications2009，18，6： | 1 |
| 10 | Study on the transmission and reflection of stress waves across joints 显示文摘 | Yexue Li Zheming Zhu Bixiong Li | 2011 | International Journal of Rock Mechanics & Mining Sciences2011，，48： | 1 |
| 11 | Human papillomavirus type 16 is an important infectious factor in the high incidence of esophageal cancer in Anyang area of China 显示文摘 | Li Tao Lu Zheming Chen Keneng | 2001 | Carcinogenesis2001，22，6： | 1 |
| 12 | Ther- mophilic esterase from Thermomyces lanuginosus:Molecu- lar cloning,functional expression and biochemical charac- terization 显示文摘 | Li Xiaojun Zheng Renchao Wu Zheming | 2014 | Protein Expression and Purification2014，101，： | 1 |
| 13 | Enzymatic production of (S)-3-cyano-5-methylhexanoic acid ethyl ester with high substrate loading by immobilized Pseudomonas cepacia lipase显示文摘 | ZHENG Renchao LI Aipeng WU Zheming | 2012 | Tetrahedron: Asymmetry2012，23，2223： | 1 |
| 14 | Effects of tem- perature inhomogeneities on the HCCI combustion in an op- tical engine 显示文摘 | Haifeng Liu Peng Zhang Zheming Li | 2001 | Applied Thermal Engineering2001，31，1415： | 1 |
| 15 | E3 ubiquitin ligase E6AP mediated TSC2 turnover in the presence and absence of HPV16 E6显示文摘We previously found that HPV16 E6 causes the degradation of the tumor suppressor protein TSC2, resulting in the phosphorylation of S6 kinase and S6 even in the absence of insulin. | Li Zheng 1,4, Huirong Ding1, Zheming Lu1, Yong Li1, Yaqi Pan1, Tao Ning1, Yang Ke1, 2, 3 1 Beijing Institute for Cancer Research, School of Oncology, Peking University No.52 Fucheng Rd, Hai Dian District, Beijing 100036, P.R.China 2 Department of Cell Biology, Health Science Center, Peking University No.38 Xueyuan Rd.Hai Dian District, Beijing 100083, P.R.China 3 Cancer Research Center, Health Science Center, Peking University No.38 Xueyuan Rd.Hai Dian District, Beijing 100083, P.R.China 4 Institute of Biophysics, Chinese Academy of Sciences ,15 Datun Road, Room 3608, Beijing 100101, China | 2009 | 生物物理学报2009，25，S1： | 0 |
| 16 | Data Mining Based Research of Development Direction of Waist Protection Equipment显示文摘[Objectives]To explore the trend of brands towards the design of waist protection products through data mining,and to provide reference for the design concept of the contour of waist protection pillow.[Methods]The structural design information of all waist protection equipment was collected from the national Internet platform,and the data were classified and a database was established.IBM SPSS 26.0 and MATLAB 2018a were used to analyze the data and tabulate them in Tableau 2022.4.After the association rules were clarified,the data were imported into Cinema 4D R21 to create the concept contour of waist protection pillow.[Results]The average and standard deviation of the single airbag design were the highest in all groups,with an average of 0.511 and a standard deviation of 0.502.The average and standard deviation of the upper and lower dual airbags were the lowest in all groups,with an average of 0.015 and a standard deviation of 0.120;the correlation coefficient between single airbag and 120°arc stretching was 0.325,which was positively correlated with each other(P<0.01);the correlation coefficient between multiple airbags and 360°encircling fitting was 0.501,which was positively correlated with each other and had the highest correlation degree(P<0.01).[Conclusions]The single airbag design is well recognized by companies,and has received the highest attention among all brand products.While focusing on single airbag design,most brands will consider the need to add 120°arc stretching elements in product design.At the time of focusing on multiple airbag design,some brands believe that 360°encircling fitting elements need to be added to the product,and the correlation between the two is the highest among all groups. | Lingfeng ZHU Zhizhen LU Haijie YU Haifen YING Zheming LI Huashan FAN | 2024 | Medicinal Plant2024，15，2： | 0 |
| 17 | Fault diagnosis for gearboxes based on Fourier decomposition method and resonance demodulation显示文摘Condition monitoring and fault diagnosis of gearboxes play an important role in the maintenance of mechanical systems.The vibration signal of gearboxes is characterized by complex spectral structure and strong time variability,which brings challenges to fault feature extraction.To address this issue,a new demodulation technique,based on the Fourier decomposition method and resonance demodulation,is proposed to extract fault-related information.First,the Fourier decomposition method decomposes the vibration signal into Fourier intrinsic band functions(FIBFs)adaptively in the frequency domain.Then,the original signal is segmented into short-time vectors to construct double-row matrices and the maximum singular value ratio method is employed to estimate the resonance frequency.Then,the resonance frequency is used as a criterion to guide the selection of the most relevant FIBF for demodulation analysis.Finally,for the optimal FIBF,envelope demodulation is conducted to identify the fault characteristic frequency.The main contributions are that the proposed method describes how to obtain the resonance frequency effectively and how to select the optimal FIBF after decomposition in order to extract the fault characteristic frequency.Both numerical and experimental studies are conducted to investigate the performance of the proposed method.It is demonstrated that the proposed method can effectively demodulate the fault information from the original signal. | Shuiguang TONG Zilong FU Zheming TONG Junjie LI Feiyun CONG | 2023 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2023，24，5： | 0 |
| 18 | An Electromagnetic Perspective of Artificial Intelligence Neuromorphic Chips显示文摘The emergence of artificial intelligence has represented great potential in solving a wide range of complex problems.However,traditional general-purpose chips based on von Neumann architectures face the“memory wall”problem when applied in artificial intelligence applications.Based on the efficiency of the human brain,many intelligent neuromorphic chips have been proposed to emulate its working mechanism and neuron-synapse structure.With the emergence of spiking-based neuromorphic chips,the computation and energy efficiency of such devices could be enhanced by integrating a variety of features inspired by the biological brain.Aligning with the rapid development of neuromorphic chips,it is of great importance to quickly initiate the investigation of the electromagnetic interference and signal integrity issues related to neuromorphic chips for both CMOS-based and memristor-based artificial intelligence integrated circuits.Here,this paper provides a review of neuromorphic circuit design and algorithms in terms of electromagnetic issues and opportunities with a focus on signal integrity issues,modeling,and optimization.Moreover,the heterogeneous structures of neuromorphic circuits and other circuits,such as memory arrays and sensors using different integration technologies,are also reviewed,and locations where signal integrity might be compromised are discussed.Finally,we provide future trends in electromagnetic interference and signal integrity and outline prospects for upcoming neuromorphic devices. | Er-Ping Li Hanzhi Ma Manareldeen Ahmed Tuomin Tao Zheming Gu Mufeng Chen Quankun Chen Da Li Wenchao Chen | 2023 | Electromagnetic Science2023，1，3： | 0 |
| 19 | Study of enhancement-mode GaN pFET with H plasma treated gate recess显示文摘This letter showcases the successful fabrication of an enhancement-mode(E-mode)buried p-channel GaN fieldeffect-transistor on a standard p-GaN/AlGaN/GaN-on-Si power HEMT substrate.The transistor exhibits a threshold voltage(VTH)of−3.8 V,a maximum ON-state current(ION)of 1.12 mA/mm,and an impressive ION/IOFF ratio of 10^(7).To achieve these remarkable results,an H plasma treatment was strategically applied to the gated p-GaN region,where a relatively thick GaN layer(i.e.,70 nm)was kept intact without aggressive gate recess.Through this treatment,the top portion of the GaN layer was converted to be hole-free,leaving only the bottom portion p-type and spatially separated from the etched GaN surface and gateoxide/GaN interface.This approach allows for E-mode operation while retaining high-quality p-channel characteristics. | Xiaotian Gao Guohao Yu Jiaan Zhou Zheming Wang Yu Li Jijun Zhang Xiaoyan Liang Zhongming Zeng Baoshun Zhang | 2023 | Journal of Semiconductors2023，44，11： | 0 |
| 20 | A ribosomal gene panel predicting a novel synthetic lethality in non-BRCAness tumors显示文摘Poly(ADP-ribose)polymerase(PARP)inhibitors are one of the most exciting classes of targeted therapy agents for cancers with homologous recombination(HR)deficiency.However,many patients without apparent HR defects also respond well to PARP inhibitors/cisplatin.The biomarker responsible for this mechanism remains unclear.Here,we identified a set of ribosomal genes that predict response to PARP inhibitors/cisplatin in HR-proficient patients.PARP inhibitor/cisplatin selectively eliminates cells with high expression of the eight genes in the identified panel via DNA damage(ATM)signaling-induced pro-apoptotic ribosomal stress,which along with ATM signaling-induced pro-survival HR repair constitutes a new model to balance the cell fate in response to DNA damage.Therefore,the combined examination of the gene panel along with HR status would allow for more precise predictions of clinical response to PARP inhibitor/cisplatin.The gene panel as an independent biomarker was validated by multiple published clinical datasets,as well as by an ovarian cancer organoids library we established.More importantly,its predictive value was further verified in a cohort of PARP inhibitor-treated ovarian cancer patients with both RNA-seq and WGS data.Furthermore,we identified several marketed drugs capable of upregulating the expression of the genes in the panel without causing HR deficiency in PARP inhibitor/cisplatin-resistant cell lines.These drugs enhance PARP inhibitor/cisplatin sensitivity in both intrinsically resistant organoids and cell lines with acquired resistance.Together,our study identifies a marker gene panel for HR-proficient patients and reveals a broader application of PARP inhibitor/cisplatin in cancer therapy. | Chao Zhang Qiang Guo Lifeng Chen Zheming Wu Xiao-Jian Yan Chengyang Zou Qiuxue Zhang Jiahong Tan Tian Fang Qunxian Rao Yang Li Shizhen Shen Min Deng Liewei Wang Huanyao Gao Jia Yu Hu Li Cheng Zhang Somaira Nowsheen Jake Kloeber Fei Zhao Ping Yin Chunbo Teng Zhongqiu Lin Kun Song Shuzhong Yao Liangqing Yao Lingying Wu Yong Zhang Xiaodong Cheng Qinglei Gao Jian Yuan Zhenkun Lou Jin-San Zhang | 2023 | Signal Transduction and Targeted Therapy2023，8，6： | 0 |
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