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| 1 | Multichannel adaptive signal detection:basic theory and literature review显示文摘Multichannel adaptive signal detection uses test and training data jointly to form an adaptive detector to determine whether a target exists.The resulting adaptive detectors typically possess constant false alarm rate(CFAR)properties;thus,no additional CFAR processing is required.In addition,a filtering process is also not required because the filtering function is embedded in the adaptive detector.Adaptive detection typically exhibits better detection performance than the filtering-then-CFAR detection technique.It has been approximately 35 years since the first multichannel adaptive detector was proposed by Kelly in 1986.However,there are few overview articles on this topic.Thus,in this study,we present a tutorial overview of multichannel adaptive signal detection with an emphasis on the Gaussian background.We discuss the main design criteria for adaptive detectors,investigate the relationship between adaptive detection and filtering-then-CFAR detection techniques,investigate the relationship between adaptive detectors and adaptive filters,summarize typical adaptive detectors,present numerical examples,provide a comprehensive literature review,and discuss potential future research tracks. | Weijian LIU Jun LIU Chengpeng HAO Yongchan GAO Yong-Liang WANG | 2022 | Science China(Information Sciences)2022，65，2： | 13 |
| 2 | Interaction between Downslope and Alongslope Processes on the Margins of Daihai Lake,North China:Implication for Deltaic Sedimentation Models of Lacustrine Rift Basin显示文摘代海·莱克,现代湖的裂缝盆,在内部蒙古定位了,诺思中国,为在活跃裂缝设置理解三角形的 depositional 进程用作重要现代类似物。代海·莱克的边缘上的二个三角洲(Yuanzigou 三角洲和 Bulianghe 三角洲) 被调查比较并且形成对照用天线相片,领域 trenching 和沉积采样叠模式。从代海·莱克的边缘收集的浅核心和沟数据显示自从形成的代海·莱克,许多 depositional 进程是活跃的。采用 chronostratigraphic 关联技术的二个 3-D 沉积模型被产生。chronostratigraphic 沉积模型预言并且代表体系结构和沉积的沙身体连续性。宽广 sheeted 飘移和隧道侵蚀的地层学的巧合建议 a coupling 在之间下坡并且 alongslope 过程。支流嘴酒吧由于下坡的流动的优势在更陡峭的斜坡上的三角洲的前面是流行的。相反,沿着斜坡水流在轻轻的 depositional 斜坡上与 sheeted sandbodies 赞成远侧的酒吧存款的发展。这研究提供卓见进与加亮下坡的流动和 alongslope 水流之间的关键差别联系的复杂沉积外形的建筑学。在这些三角洲以内的沙的分发具有特别兴趣,用在理解在湖的裂缝盆形成的烃水库的建筑学的应用。 | YU Xinghe LI Shunli CHEN Bintao TAN Chengpeng XIE Jing HU Xiaonong | 2012 | Acta Geologica Sinica(English Edition)2012，86，4： | 12 |
| 3 | Damage characteristics and constitutive modeling of the 2D C/Si C composite: Part I – Experiment and analysis显示文摘This paper reports an experimental investigation on the macroscopic mechanical behaviors and damage mechanisms of the plain-woven(2D) C/Si C composite under in-plane on- and offaxis loading conditions. Specimens with 15, 30, and 45 off-axis angles were prepared and tested under monotonic and incremental cyclic tension and compression loads. The obtained results were compared with those of uniaxial tension, compression, and shear specimens. The relationships between the damage modes and the stress state were analyzed based on scanning electronic microscopy(SEM) observations and acoustic emission(AE) data. The test results reveal the remarkable axial anisotropy and unilateral behavior of the material. The off-axis tension test results show that the material is fiber-dominant and the evolution rate of damage and inelastic strain is accelerated under the corresponding combined biaxial tension and shear loads. Due to the damage impediment effect of compression stress, compression specimens show higher mechanical properties and lower damage evolution rates than tension specimens with the same off-axis angle. Under cyclic tension–compression loadings, both on-axis and off-axis specimens exhibit progressive damage deactivation behaviors in the compression range, but with different deactivation rates. | Li Jun Jiao Guiqiong Wang Bo Yang Chengpeng Wang Gang | 2014 | Chinese Journal of Aeronautics2014，27，6： | 10 |
| 4 | Damage characteristics and constitutive modeling of the 2D C/SiC composite: Part Ⅱ–Material model and numerical implementation显示文摘In this work, a macroscopic non-linear constitutive model accounting for damage, inelastic strain and unilateral behavior is proposed for the 2D plain-woven C/Si C composite. A set of scalar damage variables and a new thermodynamic potential expression are introduced in the framework of continuum damage mechanics. In the deduced constitutive equations, the material's progressive damage deactivation behavior during the compression loading is described by a continuous function, and different deactivation rates under uniaxial and biaxial compression loadings are also considered. In damage evolution laws, the coupling effect among the damage modes and impediment effect of compression stress on the development of shear damage in different plane stress states are taken into account. Besides, the general plasticity theory is applied to describing the evolution of inelastic strain in tension and/or shear stress state. The Tsai–Wu failure criterion is adopted for strength analysis. Additionally, the material model is implemented as a user-defined material subroutine(UMAT) and linked to the ABAQUS finite element software, and its performance is demonstrated through several numerical examples. | Li Jun Jiao Guiqiong Wang Bo Li Liang Yang Chengpeng | 2015 | Chinese Journal of Aeronautics2015，28，1： | 10 |
| 5 | Enhancing Capacitance Performance of Ti3C2Tx MXene as Electrode Materials of Supercapacitor: From Controlled Preparation to Composite Structure Construction显示文摘Ti3C2Tx,a novel two-dimensional layer material,is widely used as electrode materials of supercapacitor due to its good metal conductivity,redox reaction active surface,and so on.However,there are many challenges to be addressed which impede Ti3C2Tx obtaining the ideal specific capacitance,such as restacking,re-crushing,and oxidation of titanium.Recently,many advances have been proposed to enhance capacitance performance of Ti3C2Tx.In this review,recent strategies for improving specific capacitance are summarized and compared,for example,film formation,surface modification,and composite method.Furthermore,in order to comprehend the mechanism of those efforts,this review analyzes the energy storage performance in different electrolytes and influencing factors.This review is expected to predict redouble research direction of Ti3C2Tx materials in supercapacitors. | Xiaobei Zang Jiali Wang Yijiang Qin Teng Wang Chengpeng He Qingguo Shao Hongwei Zhu Ning Cao | 2020 | Nano-Micro Letters2020，12，6： | 10 |
| 6 | Experimental characteristics of oblique shock train upstream propagation显示文摘The structure and dynamics of an oblique shock train in a duct model are investigated experimentally in a hypersonic wind tunnel.Measurements of the pressure distribution in front of and across the oblique shock train have been taken and the dynamics of upstream propagation of the oblique shock train have been analyzed from the synchronized schlieren imaging with the dynamic pressure measurements.The formation and propagation of the oblique shock train are initiated by the throttling device at the downstream end of the duct model.Multiple reflected shocks,expansion fans and separated flow bubbles exist in the unthrottled flow,causing three adversepressure-gradient phases and three favorable-pressure-gradient phases upstream the oblique shock train.The leading edge of the oblique shock train propagates upstream,and translates to be asymmetric with the increase of backpressure.The upstream propagation rate of the oblique shock train increases rapidly when the leading edge of the oblique shock train encounters the separation bubble near the shock reflection point and the adverse-pressure-gradient phase,while the oblique shock train slow movement when the leading edge of the oblique shock train is in the favorablepressure-gradient phase for unthrottled flow.The asymmetric flow pattern and oscillatory nature of the oblique shock train are observed throughout the whole upstream propagation process. | Wang Chengpeng Xue Longsheng Tian Xuang | 2017 | Chinese Journal of Aeronautics2017，30，2： | 7 |
| 7 | The response of deltaic systems to climatic and hydrological changes in Daihai Lake rift basin,Inner Mongolia,northern China显示文摘Delta systems are ubiquitous around lacustrine rift basins. Its peripheral ge-ometry, progradation structures and sedimentary successions were controlled by both tec-tonic settings and climatic changes. Peripheral geometry of a delta was strongly influenced by depositional gradients which formed the fan-shape delta on the steep slopes and developed the lobe-shape delta on the gentle slopes. Due to the discharge feed rivers can change rapidly driven by climatic variations, and the nearshore area of deltas display considerable facies variability. The rise of annual rainfall, which suggests the rivers feeding deltas are continuous, and result in distributary mouth bars that are prevalent in the front of deltas since the down-slope flows are greater than the along-slope currents. On the contrary, when the annual rainfall decreases and evaporation increases, the rivers only can feed deltas ephemerally. If the along-slope currents were in a dominant position, the distal bars were deposited. Progra-dation structure and sedimentary successions of deltas were controlled by the gradients of slopes. On gentle depositional slopes, shingle foreset beds predominate with fine sediments and small-scale sedimentary structures or vice versa. | Yu Xinghe Li Shunli Tan Chengpeng Xie Jing Chen Bintao Yang Fan | 2013 | Journal of Palaeogeography2013，2，1： | 6 |
| 8 | Characteristics and significance of the penecontemporaneous karst in lacustrine carbonate, Da'anzhai Member, Lower Jurassic, Beibei area, eastern Sichuan Basin显示文摘There are few reports about the penecontemporaneous karst of the lacustrine carbonate of Da'anzhai Member which developed on the top of Lower Jurassic Ziliujing Formation,eastern Sichuan Basin.Based on the analysis of the macroscopic and microscopic characteristics of Heping Reservoir section in Beibei area,It is discovered that the penecontemporaneous karst in the lacustrine carbonate,Da'anzhai Member,and its characters as follows:(1)The dissolved fractures and karrens are common,which have been filled with vadose silts,bioclasts,terrigenous quartzes,crystal and intergrown calcites;(2)The penecontemporaneous karstification mainly occurs in the micrites and shell limestones of the middle and upper part of the shallowing-upward sequence,and the desiccation cracks occur in some shallowing-upward sequences;(3)Three meteoric-water diagenetic lenses are identified in this section.By further study we also find the factures,stylolite and burial dissolution pores occur along the karst system(tubes,conduits and caves of the karst).And the asphalt not only fills the stylolites and fractures,but also is mixed with the vadose silt in the karst system,although the pore space formed by penecontemporaneous karstification is filled with vadose material and cements.Therefore it is concluded that the development and modification of the tight lacustrine carbonate reservoir of Da'anzhai Member,to some extent,are relevant with the penecontemporaneous karstification,and the penecontemporaneous karst reservoir may develop in the buried Da'anzhai carbonate of the basin. | Chengpeng Su Xiucheng Tan Kailan Shi Juan Zou Feifan Lu Sicong Luo Hao Tang Xinyu Zhang | 2017 | Petroleum2017，3，3： | 5 |
| 9 | Correlation analysis between the chemical contents and bioactivity for the quality control of Alismatis Rhizoma显示文摘In order to clarify regions of production and to discriminate processing methods, quantitative and qualitative analyses for saccharides and terpenes in 35 batches of Alismatis Rhizoma were performed.Methodologies included HPLC–PDA, HPLC–VWD and UHPLC–MSn, combined with principal component analysis(PCA) and partial least squares regression techniques(PLSR). The inhibitory effects of triterpenes and Alismatis Rhizoma extracts on lipase activity were evaluated in vitro. PLSR analysis revealed significant positive correlations(R2= 0.5795) between the contents of triterpenes 10, 14, 15, 18 and 22 and the inhibitory effects of Alismatis Rhizoma. The present study establishes an effective method for simultaneous determination of multiple components, and identifies key bioactive triterpenes. These results can be used for systematic and novel analytical strategies for the quality control of Alismatis Rhizoma production. | Xiaoxv Gao Chengpeng Sun Zhenglong Yu Jian Cang Xiangge Tian Xiaokui Huo Lei Feng Xinguang Liu Chao Wang Baojing Zhang Xiaochi Ma | 2018 | Acta Pharmaceutica Sinica B2018，8，2： | 4 |
| 10 | Determination of polarization states in(K,Na)NbO3 lead-free piezoelectric crystal显示文摘Polarization switching in lead-free(K0.40Na0.60)NbO3(KNN)single crystals was studied by switching spectroscopy piezoresponse force microscopy(SS-PFM).Acquisition of multiple hysteresis loops on a closely spaced square grid enables polarization switching parameters to be mapped in real space.Piezoresponse amplitude and phase hysteresis loops show collective symmetric/asymmetric characteristics,affording information regarding the switching behavior of different domains.As such,the out-of-plane polarization states of the domains,including amplitudes and phases can be determined.Our results could contribute to a further understanding of the relationships between polarization switching and polarization vectors at the nanoscale,and provide a feasible method to correlate the polarization hysteresis loops in a domain under an electric field with the polarization vector states. | Mao-Hua ZHANG Chengpeng HU Zhen ZHOU Hao TIAN Hao-Cheng THONG Yi Xuan LIU Xing-Yu XU Xiao-Qing XI Jing-Feng LI Ke WANG | 2020 | Journal of Advanced Ceramics2020，9，2： | 4 |
| 11 | Target localization and parameters estimation by sonar system with explosions as underwater sound sources显示文摘Underwater target localization and parameters(azimuth and range) estimation by the method of utilizing explosions as underwater sound sources are described in this paper.The narrow beam reverberation model of the target echo signal is researched to estimate the target azimuth in reverberation background.Estimation errors of target azimuth and range are studied and proved to approximately meet Gauss distribution.Then the variance formula of target range error is deduced.Simulation experiments are applied to research the target range error and its standard deviation,and a series of measures to improve the estimation accuracy of target range are proposed.It is confirmed by the data processing results of simulations and lake experiments that the proposed method can accurately locate underwater target at a long distance on the condition of a certain underwater explosion range error. | YAN Sheng WEI Xiaojun HAO Chengpeng MA Hui YAN Shefeng | 2016 | Chinese Journal of Acoustics2016，35，4： | 4 |
| 12 | Review on modified and novel techniques of severe plastic deformation显示文摘This review highlights very recent achievements and new developments of severe plastic deformation(SPD) technology for producing bulk ultrafine-grain(UFG) and even nanocrystalline(nc) materials.These numerous modified and novel SPD methods include cyclic forward-backward extrusion,axi-symmetric forward spiral extrusion,vortex extrusion,simple shear extrusion,planar twist extrusion,tubular channel angular pressing,cone-cone method,high-pressure tube twisting,tube channel pressing and elliptical cross-section spiral equal-channel extrusion.According to classification,these new methods are categorized into the extension of equal-channel angle pressing(ECAP),high-pressure torsion(HPT),twist extrusion(TE) and constrained groove pressing(CGP),respectively.The principles of various new SPD technologies are described in detail.In addition,the microstructure revolution characteristics and mechanical properties of materials produced by SPD process,as well as the applications of SPD techniques to UFG materials,are also reported.Furthermore,this article reviews recent progresses in determining the refinement and/or deformation mechanisms,e.g.dislocation deformation mechanism,twin deformation mechanism and grain boundary sliding and torsional deformation mechanism,and further orientation of SPD technology. | WANG ChengPeng LI FuGuo WANG Lei QIAO HuiJuan | 2012 | Science China(Technological Sciences)2012，55，9： | 4 |
| 13 | Methodology for credibility assessment of historical global LUCC datasets显示文摘Land use-induced land cover change(LUCC)is an important anthropogenic driving force of global change that has influenced,and is still influencing,many aspects of regional and global environments.Accurate historical global land use/cover datasets are essential for a better understanding of the impacts of LUCC on global change.However,there are not only evident inconsistencies in current historical global land use/cover datasets,but inaccuracies in the data in these global dataset revealed by historical record-based reconstructed regional data throughout the world.A focus in historical LUCC and global change research relates to how the accuracy of historical global land cover datasets can be improved.A methodology for assessing the credibility of existing historical global land cover datasets that addresses temporal as well as spatial changes in the amount and distribution of land cover is therefore needed.Theoretically,the credibility of a global land cover dataset could be assessed by comparing similarities or differences in the data according to actual land cover data(the'true value').However,it is extremely difficult to obtain historical evidence for assessing the credibility of historical global land cover datasets,which cannot be verified through field sampling like contemporary global land cover datasets.We proposed a methodological framework for assessing the credibility of global land cover datasets.Considering the types and characteristics of the available evidence used for assessments,we outlined four methodological approaches:(1)accuracy assessment based on regional quantitative reconstructed land cover data,(2)rationality assessment based on regional historical facts,(3)rationality assessment based on expertise,and(4)likelihood assessment based on the consistency of multiple datasets.These methods were illustrated through five case studies of credibility assessments of historical cropland cover data.This framework can also be applied in assessments of other land cover types,such as forest and grassland. | Xiuqi FANG Wanyi ZHAO Chengpeng ZHANG Diyang ZHANG Xueqiong WEI Weili QIU Yu YE | 2020 | Science China Earth Sciences2020，63，7： | 4 |
| 14 | Structural modulation of Cd(Ⅱ) supramolecular frameworks with a versatile 2,4-dipyridyl-type building block and different dicarboxylate ligands显示文摘A series of Cd(Ⅱ) coordination complexes with an elongated 2,4-dipyridyl-type building block trans-1-(2-pyridyl)-2-(4-pyridyl)ethylene (bpe) and different dicarboxylate ligands have been presented. Generally, bpe shows the unidentate coordination mode and serves as the terminal pendant, whereas the dicarboxylate ligands display various binding fashions to interlink the metal centers to form 1-D comb-like chain, ribbon, and fishbone arrays, as well as 2-D 44 and 4.82 layered networks. Notably, the bpe building block is also involved in secondary interactions such as hydrogen bonding and aromatic stacking to construct the resulting supramolecular architectures. Thermal stability of these complexes has been studied by TG-DTA technique. | LI ChengPeng, YU Qian & DU Miao College of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, China | 2009 | Science China Chemistry2009，52，9： | 3 |
| 15 | Comparative Study on the Efficacies of 11 Chemical Agents against Taro Soft Rot Caused by Pectobacterium aroidearum显示文摘[Objective]The paper was to screen the effective agents for effectively controlling the occurrence and prevalence of taro soft rot.[Method]The fungicidal effects of 11 fungicides on taro soft rot were determined by inhibition zone method.[Result]0.3%Tetramycin,25%bromothalonil,3%Zhongshengmycin and 30%zinc thiazole had better antifungal effect on Pectobacterium aroidearum at recommended concentration.The indoor toxicity of four fungicides showed that the EC50 of 0.3%tetramycin AS was the smallest of 0.6μg/mL,indicating that tetramycin had the largest toxicity and the best inhibitory effect against P.aroidearum;followed by 25%bromothalonil EC and 3%Zhongshengmycin WP,with the EC_(50) of 2.57 and 97.72μg/mL,respectively;the inhibitory effect of 30%zinc thiazole SC against P.aroidearum was the poorest.[Conclusion]The study provides a reference for screening out new and efficient chemical agents against taro soft rot. | Dongkun Wang Xiuting Ji Huaixu Zhan Chengpeng Zheng Hao Zong Xiaolei Tan Xiuchun Du Weimin Wang Jingjing Wu Fenglong Wang Xiaoqiang Wang | 2021 | Plant Diseases and Pests2021，12，2： | 2 |
| 16 | Model for Asymmetry of Shock/Boundary Layer Interactions in Nozzle Flows显示文摘The reason for the asymmetry phenomenon of shock/boundary layer interactions(SBLI)in a completely symmetric nozzle with symmetric flow conditions is still an open question.A model for the asymmetry of nozzle flows was proposed based on the properties of fluid entrainment in the mixing layer and momentum conservation.The asymmetry model is deduced based on the nozzle flow with restricted shock separation,and is still applicable for free shock separation.Flow deflection angle at nozzle exit is deduced from this model.Steady numerical simulations are conducted to model the asymmetry of the SBLIs in a planar convergent-divergent nozzle tested by previous researchers.The obtained values of deflection angle based on the numerical results of forced symmetric nozzle flows can judge the asymmetry of flows in a nozzle at some operations.It shows that the entrainment of shear layer on the separation induced by SBLTs is one of the reasons for the asymmetry in the confined SBLIs. | Wang Chengpeng Zhuo Changfei | 2018 | Transactions of Nanjing University of Aeronautics and Astronautics2018，35，1： | 2 |
| 17 | Optimization of structural parameters for elliptical cross-section spiral equal-channel extrusion dies based on grey theory显示文摘The elliptical cross-section spiral equal-channel extrusion (ECSEE) process is simulated by using Deform-3D finite element software. The ratio m of major-axis to minor-axis length for ellipse-cross-section, the torsion angle u, the round-ellipse cross-section transitional channel L1, the elliptical rotation cross-section transitional channel L2 and the ellipse-round cross-section transitional channel L3 are destined for the extrusion process parameters. The average effective strain eave on cross-section of blank, the deformation uniformity coefficient a and the value of maximum damage dmax are chosen to be the optimize indexes, and the virtual orthogonal experiment of L16 (45) is designed. The correlation degree of the process factors affecting eave, a and dmax is analyzed by the numerical simulation results using the weights and grey association model. The process parameters are optimized by introducing the grey situation decision theory and the ECSEE optimal combination of process parameters is obtained: u of 120 , m of 1.55, L1 of 7 mm, L2 of 10 mm, and L3 of 10 mm. Simulation and experimental results show that the material can be refined with the optimized structural parameters of die. Therefore, the optimization results are satisfactory. | Wang Chengpeng Li Fuguo Lu Hongya Yuan Zhanwei Chen Bo | 2013 | Chinese Journal of Aeronautics2013，26，1： | 2 |
| 18 | Coincidence of abandoned settlements and climate change in the Xinjiang oases zone during the last 2000 years显示文摘在绿洲的放弃的解决和气候变化的关系上的学习能为理解人的回答到现在和未来提供一本历史的参考书在干旱地区的全球温暖。554 的一个总数在 Xinjiang Uygur 自治区域放弃了历史的解决,中国,被用来在过去的 2000 年检验在放弃的解决和温度变化之间的关系。分析在 Xinjiang 的绿洲从汉王朝(206BC-220AD ) 盖住皇朝的时代到 Qing 王朝(1644AD-1911AD ) 。解决的更大的密度在比对与更小的绿洲相比的气候变化更稳定、不太敏感的 2000 km 2, 大的绿洲被发现。解决在温暖的时期期间在小绿洲和河的中间、更低的活动范围繁荣并且在冷时期期间退缩了到山麓盆和在上游的冲积扇子。这些结果证明到气候的绿洲农业的回答变化。 | JIA Dan FANG Xiuqi ZHANG Chengpeng | 2017 | Journal of Geographical Sciences2017，27，9： | 2 |
| 19 | An efficient CRISPR/Cas9 platform for targeted genome editing in rose(Rosa hybrida)显示文摘The clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-related nuclease 9(Cas9)system enables precise,simple editing of genes in many animals and plants.However,this system has not been applied to rose(Rosa hybrida)due to the genomic complexity and lack of an efficient transformation technology for this plant.Here,we established a platform for screening single-guide RNAs(sgRNAs)with high editing efficiency for CRISPR/Cas9-mediated gene editing in rose using suspension cells.We used the Arabidopsis thaliana U6-29 promoter,which showed high activity for driving sgRNA expression,to modify the CRISPR/Cas9 system.We used our highly efficient optimized CRISPR/Cas9 system to successfully edit RhEIN2,encoding an indispensable component of the ethylene signaling pathway,resulting in ethylene insensitivity in rose.Our optimized CRISPR/Cas9 system provides a powerful toolbox for functional genomics,molecular breeding,and synthetic biology in rose. | Chengpeng Wang Yang Li Na Wang Qin Yu Yonghong Li Junping Gao Xiaofeng Zhou Nan Ma | 2023 | Journal of Integrative Plant Biology2023，65，4： | 1 |
| 20 | Performance analysis of a two-stage Rao detector显示文摘 | Chengpeng Hao Bin Liu Long Cai | 2011 | Signal Processing2011，，8： | 1 |
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