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| 1 | Effects of dry-wet cycles on three-dimensional pore structure and permeability characteristics of granite residual soil using X-ray micro computed tomography显示文摘Due to seasonal climate alterations,the microstructure and permeability of granite residual soil are easily affected by multiple dry-wet cycles.The X-ray micro computed tomography(micro-CT)acted as a nondestructive tool for characterizing the microstructure of soil samples exposed to a range of damage levels induced by dry-wet cycles.Subsequently,the variations of pore distribution and permeability due to drywet cycling effects were revealed based on three-dimensional(3D)pore distribution analysis and seepage simulations.According to the results,granite residual soils could be separated into four different components,namely,pores,clay,quartz,and hematite,from micro-CT images.The reconstructed 3D pore models dynamically demonstrated the expanding and connecting patterns of pore structures during drywet cycles.The values of porosity and connectivity are positively correlated with the number of dry-wet cycles,which were expressed by exponential and linear functions,respectively.The pore volume probability distribution curves of granite residual soil coincide with the χ^(2)distribution curve,which verifies the effectiveness of the assumption of χ^(2)distribution probability.The pore volume distribution curves suggest that the pores in soils were divided into four types based on their volumes,i.e.micropores,mesopores,macropores,and cracks.From a quantitative and visual perspective,considerable small pores are gradually transformed into cracks with a large volume and a high connectivity.Under the action of dry-wet cycles,the number of seepage flow streamlines which contribute to water permeation in seepage simulation increases distinctly,as well as the permeability and hydraulic conductivity.The calculated hydraulic conductivity is comparable with measured ones with an acceptable error margin in general,verifying the accuracy of seepage simulations based on micro-CT results. | Ran An Lingwei Kong Xianwei Zhang Chengsheng Li | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，3： | 7 |
| 2 | Spatiotemporal variability of ocean chemistry in the early Cambrian,South China显示文摘Following the Ediacaran metazoan radiation,the 'Cambrian Explosion' set up the major framework of todays' animal phyla as well as modern marine ecosystem.Here,we present a preliminary investigation on the temporal and spatial(from shallow to deep waters) variations of the early Cambrian ocean chemistry in South China through analyzing a Fe-S-C systematic dataset integrated from literature.Our investigation indicates that the early Cambrian deep ocean in South China was still anoxic and Fe2+-enriched(i.e.,ferruginous) although its surface was oxic,and in between a metastable euxinic(anoxic and sulfidic) water zone may have dynamically developed in anoxic shelf waters with an increasing weathering sulfate supply.Furthermore,accompanying marine transgression and regression cycles in the early Cambrian,such a 'sandwich' structure in ocean redox chemistry demonstrates five evolutional stages,which can be well correlated to the spatiotemporal patterns of fossil records in South China.The good correlation between metazoan fossil occurrences and water chemistry in South China suggests that early animals possibly possessed ability to inhabit anoxic but generally not euxinic environments as free H2S was fatal to most eukaryotes.This view can well explain why those small shell fauna and sponges disappeared from shelf to slope areas where sulfidic Ni-Mo-rich shales were widely deposited.Thus,we conclude that the spatiotemporal variations of ocean chemistry and its biological effects probably played a key role in the phased animal radiations and 'extinctions' in the early Cambrian. | JIN ChengSheng LI Chao PENG XingFang CUI Hao SHI Wei ZHANG ZiHu LUO GenMing XIE ShuCheng | 2014 | Science China Earth Sciences2014，57，4： | 5 |
| 3 | Fingerprint Liveness Detection from Different Fingerprint Materials Using Convolutional Neural Network and Principal Component Analysis显示文摘Fingerprint-spoofing attack often occurs when imposters gain access illegally by using artificial fingerprints,which are made of common fingerprint materials,such as silicon,latex,etc.Thus,to protect our privacy,many fingerprint liveness detection methods are put forward to discriminate fake or true fingerprint.Current work on liveness detection for fingerprint images is focused on the construction of complex handcrafted features,but these methods normally destroy or lose spatial information between pixels.Different from existing methods,convolutional neural network(CNN)can generate high-level semantic representations by learning and concatenating low-level edge and shape features from a large amount of labeled data.Thus,CNN is explored to solve the above problem and discriminate true fingerprints from fake ones in this paper.To reduce the redundant information and extract the most distinct features,ROI and PCA operations are performed for learned features of convolutional layer or pooling layer.After that,the extracted features are fed into SVM classifier.Experimental results based on the LivDet(2013)and the LivDet(2011)datasets,which are captured by using different fingerprint materials,indicate that the classification performance of our proposed method is both efficient and convenient compared with the other previous methods. | Chengsheng Yuan Xinting Li Q.M.Jonathan Wu Jin Li Xingming Sun | 2017 | Computers, Materials & Continua2017，，4： | 3 |
| 4 | Secure Authentication Protocol for Mobile Payment显示文摘With the increasing popularity of fintech, i.e., financial technology, the e-commerce market has grown rapidly in the past decade, such that mobile devices enjoy unprecedented popularity and are playing an everincreasing role in e-commerce. This is especially true of mobile payments, which are attracting increasing attention.However, the occurrence of many traditional financial mishaps has exposed the challenges inherent in online authentication technology that is based on traditional modes of realizing the healthy and stable development of mobile payment. In addition, this technology ensures user account security and privacy. In this paper, we propose a Secure Mutual Authentication Protocol(SMAP) based on the Universal 2 nd Factor(U2 F) protocol for mobile payment. To guarantee reliable service, we use an asymmetric cryptosystem for achieving mutual authentication between the server and client, which can resist fake servers and forged terminals. Compared to the modes currently used, the proposed protocol strengthens the security of user account information as well as individual privacy throughout the mobile-payment transaction process. Practical application has proven the security and convenience of the proposed protocol. | Kai Fan Hui Li Wei Jiang Chengsheng Xiao Yintang Yang | 2018 | Tsinghua Science and Technology2018，23，5： | 3 |
| 5 | CGR-QV: A Virtual Topology DTN Routing Algorithm Based on Queue Scheduling显示文摘In this paper,we proposed a CGR-QV algorithm in order to solve the problems of low message delivery rate and low throughput problems in deep space communication networks,which are caused by the high delay,asymmetric data transmission rate,and frequent topology switching characteristics.The proposed method separate different message types in the queues,establish the relationship between TTL,wait time and Hurst to prevent the phenomenon of'starvation'and redundancy.In view of the impact of congestion on the network,improved algorithm use the Elastic load balancing strategy establish the relationship between optimal thresholdsαand network performance reliability.Simulation result show that the algorithm has improved in throughput as about 19%,message delivery rate improved as about 7.5%and bandwidth rejection rate decreased as about 4.7%,the algorithm can balance the impact of topology updates and resource consumption better in space communication networks. | Yaowen Qi Li Yang Chengsheng Pan Hanrui Li | 2020 | China Communications2020，17，7： | 3 |
| 6 | Evolution of cracks in the shear bands of granite residual soil显示文摘The evolution of shear bands and cracks plays an important role in landslides.However,there is no systematic method for classification of the cracks,which can be used to analyze the evolution of cracks in shear bands.In this study,X-ray computed tomography(CT)is used to observe the behavior of granite residual soil during a triaxial shear process.Based on the digital volume correlation(DVC)method,a crack classification method is established according to the connectivity characteristics of cracks before and after loading.Cracks are then divided into six classes:obsolete,brand-new,isolated,split,combined,and compound.With evolution of the shear bands,a large number of brand-new cracks accelerate the damages of materials at the mesoscale,resulting in a sharp decrease in strength.The volume of brandnew cracks increases rapidly with increasing axial strain,and their volume is greater than 50%when the strain reaches 12%,while the volume of compound cracks decreases from 54%to 21%.As cracks are the weakest areas in a material,brand-new cracks accelerate the development of shear bands.Finally,the coupling effect of shear bands and cracks destroys the soil strength. | Chengsheng Li Lingwei Kong Ran An | 2022 | Journal of Rock Mechanics and Geotechnical Engineering2022，14，6： | 3 |
| 7 | End-to-End Latency Evaluation of the Sat5G Network Based on Stochastic Network Calculus显示文摘Simultaneous use of heterogeneous radio access technologies to increase the performance of real-time,reliability and capacity is an inherent feature of satellite-5G integrated network(Sat5G).However,there is still a lack of theoretical characterization of whether the network can satisfy the end-to-end transmission performance for latency-sensitive service.To this end,we build a tandem model considering the connection relationship between the various components in Sat5G network architecture,and give an end-to-end latency calculation function based on this model.By introducing stochastic network calculus,we derive the relationship between the end-to-end latency bound and the violation probability considering the traffic characteristics of multimedia.Numerical results demonstrate the impact of different burst states and different service rates on this relationship,which means the higher the burst of arrival traffic and the higher the average rate of arrival traffic,the greater the probability of end-to-end latency violation.The results will provide valuable guidelines for the traffic control and cache management in Sat5G network. | Huaifeng Shi Chengsheng Pan Li Yang Debin Wei Yunqing Shi | 2020 | Computers, Materials & Continua2020，，11： | 2 |
| 8 | News-Oriented Automatic Chinese Keyword Indexing显示文摘 | Li Sujian Wang Houfeng Yu Shiwen Xin Chengsheng | 2003 | Proceedings of the Second SIGHAN Workshop on Chinese Language Processing 92 - 97 July 2003 Sapporo2003，，： | 1 |
| 9 | A New Class of Priority-based Weighted Fair Scheduling Algorithm显示文摘 | Yang Li Pan Chengsheng Liu Haiyan | 2012 | Physics Procedia2012，33，5： | 1 |
| 10 | An evolu- tionary game model of financial markets with heterogene- ous players 显示文摘 | Li Honggang Wu Chengsheng Yuan Mingyu | 2013 | Procedia Computer Science2013，17，： | 1 |
| 11 | A New Class of Priority-based Weighted Fair Scheduling Algorithm显示文摘 | Li Yang ChengSheng Pan ErHan Zhang HaiYan Liu | 2012 | Physics Procedia2012，，： | 1 |
| 12 | Lipase -cata- lyzed synthesis of conjugated linoleyl B - sitosterol and its cholesterol - lowering properties in mice 显示文摘 | LI Rui JIA Chengsheng YUE Lin | 2010 | J Agrie Food Chem2010，58，： | 1 |
| 13 | An evolutionary game model of financial markets with heterogeneous players 显示文摘 | Honggang Li Chengsheng Wu Mingyu Yuan | 2013 | Procedia Computer Science2013，，： | 1 |
| 14 | Screening of Antagonistic Bacteria from Phyllosphere towards Tobacco Brown Spot Fungus Alternaria alternata显示文摘The possibility of employing antagonistic bacteria for the control of tobacco brown spot was studied. Approximately 136 strains of bacteria were isolated from phyllospheres of tobacco and 9 of these possessed high levels of antagonistic properties. They significantly reduced brown spot in detached tobacco leaves when artificially inoculated with Alternaria alternata. Culture filtrate of the most effective bacterial isolate which designated as Tpb88 was shown to be very efficient in inhibiting mycelial growth of A alternata in dual cultures. Culture filtrate of Tpb88 inhibited germination and germ tube elongation of A alternata. The results showed that the culture filtrate directly inhibited spore germination of A alternata, especially during the first hours of the paired cultivation. The rate of antagonistic activity of culture filtrate of Tpb88 depended on its concentration in the mixture. The greatest inhibition of spore germination was ob served at the highest concentration of filtrate (filtrate to fungal spores inocula mixed in proportion 1: 50). These suggest that the hypothetic mechanism of Tpb88 against tobacco brown spot is to produce antagonistic substances. | ZHANG Chengsheng KONG Fanyu LI Duochuan WANG Jing WANG Fenglong | 2006 | Journal of Northeast Agricultural University(English Edition)2006，13，1： | 1 |
| 15 | Preparation,characterization,and antibacterial activity of oleic acid-grafted chitosan oligosaccharide nanoparticles显示文摘An oleic acid-grafted chitosan oligosaccharide(CSO-OA)with different degrees of amino substitution(DSs)was synthesized by the 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide(EDC)-mediated coupling reaction.Fourier transform infrared spectroscopy(FT-IR)suggested the formation of an amide linkage between amino groups of chitosan oligosaccharide and carboxyl groups of oleic acid.The critical aggregation concentrations(CACs)of CSO-OA with 6%,11%,and 21%DSs were 0.056,0.042,and 0.028 mg·mL^(-1),respectively.Nanoparticles prepared with the sonication method were characterized by means of transmission electron microscopy(TEM)and Zetasizer,and the antibacterial activity against Escherichia coli and Staphylococcus aureus was investigated.The results showed that the CSO-OA nanoparticles were in the range of 60-200 nm with satisfactory structural integrity.The particle size slightly decreased with the increase of DS of CSO-OA.The antibacterial trial showed that the nanoparticles had good antibacterial activity against E.coli and S.aureus. | Lu HUANG Xiaojie CHENG Chengsheng LIU Ke XING Jing ZHANG Gangzheng SUN Xiaoyan LI Xiguang CHEN | 2009 | Frontiers in Biology2009，4，3： | 0 |
| 16 | A Rasterized Lightning Disaster Risk Method for Imbalanced Sets Using Neural显示文摘Over the past 10 years,lightning disaster has caused a large number of casualties and considerable economic loss worldwide.Lightning poses a huge threat to various industries.In an attempt to reduce the risk of lightning-caused disaster,many scholars have carried out in-depth research on lightning.However,these studies focus primarily on the lightning itself and other meteorological elements are ignored.In addition,the methods for assessing the risk of lightning disaster fail to give detailed attention to regional features(lightning disaster risk).This paper proposes a grid-based risk assessment method based on data from multiple sources.First,this paper considers the impact of lightning,the population density,the economy,and geographical environment data on the occurrence of lightning disasters;Second,this paper solves the problem of imbalanced lightning disaster data in geographic grid samples based on the K-means clustering algorithm;Third,the method calculates the feature of lightning disaster in each small field with the help of neural network structure,and the calculation results are then visually reflected in a zoning map by the Jenks natural breaks algorithm.The experimental results show that our method can solve the problem of imbalanced lightning disaster data,and offer 81%accuracy in lightning disaster risk assessment. | Yan Zhang Jin Han Chengsheng Yuan Shuo Yang Chuanlong Li Xingming Sun | 2021 | Computers, Materials & Continua2021，，1： | 0 |
| 17 | High resolution and high signal-to-noise ratio imaging with nearfield high-order optical signals显示文摘The properties of near-field optics have always been the focus of nano-measurement technology.The 11th order effective nearfield optical signal with an incident laser wavelength of 1,550 nm is obtained using a platinum-coated optical probe(Pt–Si probe).The experimental results show that the local electric field intensity of the Pt–Si probe is nearly 30 times higher than that of silicon probe(Si probe).Therefore,the highest 7th order near-field optical imaging results are obtained with the Pt–Si probe.Further,near-field optical imaging is performed on samples such as gold grids and carbon nanotubes using the Pt–Si probe.The measurement results show that the high-order signal has the characteristics of less background,higher signal-to-noise ratio,and resolution up to 5.7 nm. | Fei Wang Shuming Yang Shaobo Li Shuhao Zhao Biyao Cheng Chengsheng Xia | 2022 | Nano Research2022，15，9： | 0 |
| 18 | Exploration of Experimental Teaching of Analysis of Traditional Chinese Medicine Based on'Five-in-One'Practice Teaching System显示文摘Analysis of Traditional Chinese Medicine is a compulsory comprehensive professional course for Chinese pharmacy major,and it is the necessary knowledge for modern Chinese pharmacy talents.In this paper,the experimental teaching of Analysis of Traditional Chinese Medicine under the'five-in-one'practice teaching mode of Guangxi University of Chinese Medicine was explored to provide reference for the experimental teaching of the course Analysis of Traditional Chinese Medicine. | Zhiying WEI Shenggao YIN Jie LIANG Chengsheng LU Fangchan LI Zhenzhen PAN Kuikui CHEN Xiaojiao PAN | 2021 | Medicinal Plant2021，12，4： | 0 |
| 19 | The role of CO_(2)dissociation in CO_(2)hydrogenation to ethanol on CoCu/silica catalysts显示文摘CoCu-based catalysts are widely used in CO_(x) hydrogenation reactions to produce higher alcohols due to the C–C coupling ability of Co and the ability of Cu to produce alcohols.This work describes the role of easily happened CO_(2)dissociation on the CoCu surface during the reaction,using different silica support to tune the metal–support interaction,reaches different selectivity to ethanol.CoCu supported on mesoporous silica MCM-41 shows ethanol selectivity as high as 85.3%,the ethanol space-time yield(STY)is 0.229 mmol/(gmetal∙h),however,poor selectivity to ethanol as low as 28.8%is observed on CoCu supported on amorphous silica.The different selectivity is due to the different intensities of CO_(2)dissociation on the catalysts.The adsorbed O*produced via CO_(2)dissociation can occupy the cobalt hollow sites on CoCu surfaces,which are also the adsorption sites of C1 intermediates for further C–C coupling. | Zhongyan Wang Chengsheng Yang Xianghong Li Xiwen Song Chunlei Pei Zhi-Jian Zhao Jinlong Gong | 2023 | Nano Research2023，16，5： | 0 |
| 20 | Mako:A Graph-based Pattern Growth Approach to Detect Complex Structural Variants显示文摘Complex structural variants(CSVs) are genomic alterations that have more than two breakpoints and are considered as the simultaneous occurrence of simple structural variants.However,detecting the compounded mutational signals of CSVs is challenging through a commonly used model-match strategy.As a result,there has been limited progress for CSV discovery compared with simple structural variants.Here,we systematically analyzed the multi-breakpoint connection feature of CSVs,and proposed Mako,utilizing a bottom-up guided model-free strategy,to detect CSVs from paired-end short-read sequencing.Specifically,we implemented a graph-based pattern growth approach,where the graph depicts potential breakpoint connections,and pattern growth enables CSV detection without pre-defined models.Comprehensive evaluations on both simulated and real datasets revealed that Mako outperformed other algorithms.Notably,validation rates of CSVs on real data based on experimental and computational validations as well as manual inspections are around 70%,where the medians of experimental and computational breakpoint shift are 13 bp and 26 bp,respectively.Moreover,the Mako CSV subgraph effectively characterized the breakpoint connections of a CSV event and uncovered a total of 15 CSV types,including two novel types of adjacent segment swap and tandem dispersed duplication.Further analysis of these CSVs also revealed the impact of sequence homology on the formation of CSVs.Mako is publicly available at http://gffzz188fe103f8f1460as6pn9p5xfq6oc65v6.ffgz.tsg.suse.edu.cn/xjtu-omics/Mako. | Jiadong Lin Xiaofei Yang Walter Kosters Tun Xu Yanyan Jia Songbo Wang Qihui Zhu Mallory Ryan Li Guo Chengsheng Zhang The Human Genome Structural Variation Consortium Charles Lee Scott E.Devine Evan E.Eichler Kai Ye | 2022 | Genomics, Proteomics & Bioinformatics2022，20，1： | 0 |
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