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Preserving details in semantics-aware context for scene parsing

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Science China(Information Sciences) 2020年第2期63卷 79-92页

作者： Shuai ma Yanwei PANG jing PAN Ling SHAO Tianjin Key Laboratory of Brain-Inspired Intelligence Technology School of Electrical and Information EngineeringTianjin University School of Electronic Engineering Tianjin University of Technology and Education

Great success of scene parsing(also known as, semantic segmentation) has been achieved with the pipeline of fully convolutional networks(FCNs). Nevertheless, there are a lot of segmentation failures caused by large similarities between local appearances. To alleviate the problem, most of existing methods attempt to improve the global view of FCNs by introducing different contextual modules. Though the reconstructed high resolution output of these methods is of rich semantics, it cannot faithfully recover the fine image details owing to lack of desired precise low-level information. To overcome the problem, we propose to improve the spatial decoding process through embedding possibly lost low-level information in a principled way. To this end, we make the following three contributions. First, we propose a semantics conformity module to make low-level features variations agnostic. Second, we introduce semantics into the conformed low level features through guidance from semantically aware features. Finally, we institute the availability of various possible contextual features at feature fusion to enrich context information. The proposed approach demonstrates competitive performance on challenging PASCAL VOC 2012, Cityscapes,and ADE20K benchmarks in comparison to the state-of-the-art methods.

关键词： fully convolutional networks semantic segmentation cityscapes semantic-aware context

Wear Resistance, Cytotoxicity and Antibacterial Properties of Polyetheretherketone Composite Modified by Carbon Fiber and Black Phosphorus

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Journal of Bionic Engineering 2022年第1期19卷 155-166页

作者： jingdan Li Qian Liang Wen Qin jing ma School of material Science and Engineering Taiyuan University of TechnologyTaiyuan030024China

High wear resistance,low cytotoxicity and excellent antibacterial properties are the basis for osseointegration of implant ***(PEEK)has been considered as a potential implant material due to its excellent biocompatibility,natural radiolucency and mechanical *** this work,to improve the wear resistance,cytotoxicity and antibacterial properties of PEEK,carbon fiber(CFR)and Black Phosphorus(BP)were used to synergistically modify PEEK by two methods,deposition of BP coating on CFR-PEEK and BP/CFR-PEEK coating on Ti6Al4V(TC4)through electrostatic *** CFR and BP synergistically modified PEEK,the friction coefficient of BP coating on CFR-PEEK and BP/CFR-PEEK coating were 0.14±0.01 and 0.09±0.02,*** wear volume of BP coating on CFR-PEEK(30.54±1.32)was higher than that of BP/CFR-PEEK coating(9.46±1.32),which indicated that BP/CFR-PEEK coating showed high wear *** difference in wear resistance may be caused by the fact that BP was not easily oxidized in BP/CFR-PEEK *** addition,BP coating on CFR-PEEK and BP/CFR-PEEK coating showed no obvious cytotoxicity to L929 cell and presented excellent antibacterial efficiency(up to 94.5%±2.8%and 96.0%±3.8%,respectively)against Staphylococcus aureus(***).It was concluded that BP/CFR-PEEK coating exhibited high wear resistance,low cytotoxicity and excellent antibacterial properties against ***,which might provide a foundation for osseointegration of implants.

关键词： Surface deposition Electrostatic spraying Wear resistance Cytotoxicity Antibacterial properties

Assessment of silver(Ⅰ) complexes of salicylaldehyde derivatives—histidine Schiff base as novel a-glucosidase inhibitors

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Chinese Chemical Letters 2016年第2期27卷 283-286页

作者： jing-Wei Zheng Lin ma School of Chemistry and Chemical Engineering Sun Yat-sen University

In this study,a novel class of histidine Schiff base silver（Ⅰ） complexes derived from salicylaldehyde,1a-9a,was found to be an effective inhibitor of α-*** results of this study showed that the newly synthesized complexes inhibited α-glucosidase through noncompetitive mechanisms;the IC50values were ranging from 0.00431 μmol L ~1 to 0.492 μmol L ~*** structure-activity relationship was established as *** results demonstrated that compound 7a,5-nitro salicylaldehyde Schiff base silver complex,is the most promising α-glucosidase inhibitor with the lowest IC50 value,which could be exploited as a drug candidate to alleviate postprandial hyperglycemia in the treatment of type II diabetes *** research provided a catalyst-free,simple,and environmentally benign reaction to synthesize compounds using mechanochemistry.

关键词： α-Glucosidase Histidine schiff base silver(Ⅰ) complexes Type Ⅱ diabetes mellitus

Metal complexes of anthranilic acid derivatives: A new class of noncompetitive α-glucosidase inhibitors

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Chinese Chemical Letters 2016年第5期27卷 627-630页

作者： jing-wei Zheng Lin ma School of Chemistry and Chemical Engineering Sun Yat-Sen University Guangzhou 510275 China

Metal complexes of anthranilic acid derivatives that constitute a novel class of non-sugar-type α- glucosidase inhibitors were synthesized and assessed in vitro for inhibitory activity. All of the AgO） complexes （9-16） inhibited α-glucosidase at the nanomolar scale, while 3,5-dichloroanthranilic acid silver（1）（9） was the most potent （ICso = 3.21 nmol/L）. Analysis of the kinetics of enzyme inhibition indicated that the mechanism of the newly prepared silver complexes was noncompetitive. The structure-activity relationships were also analyzed, and thev are discussed in this report.

关键词： α-Glucosidase Anthranilic acid derivatives Metal complexes Noncompetitive inhibitors

氧化苦参碱对单侧输尿管梗阻大鼠模型肾间质纤维化的影响

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四川医学 2009年第5期30卷 620-622页

作者：米绪华龚蓉马爱景谢席胜冯梅付平四川大学华西医院肾内科四川成都610041 成都市第三人民医院肾内科四川成都610031 四川省肿瘤医院四川成都610041

目的探讨氧化苦参碱对大鼠肾间质纤维化的影响。方法将48只SD雄性大鼠随机分为假手术(SOR)组、单侧输尿管梗阻(UUO)组、血管紧张素Ⅱ受体拮抗剂氯沙坦组(LOS组)和氧化苦参碱组(OM组)。大鼠肾组织行苏木精-伊红和masson染色,计算肾间质... 详细信息

目的探讨氧化苦参碱对大鼠肾间质纤维化的影响。方法将48只SD雄性大鼠随机分为假手术(SOR)组、单侧输尿管梗阻(UUO)组、血管紧张素Ⅱ受体拮抗剂氯沙坦组(LOS组)和氧化苦参碱组(OM组)。大鼠肾组织行苏木精-伊红和masson染色,计算肾间质纤维化的相对面积。免疫组化技术检测ColⅠ和FN在肾组织中的表达。结果OM治疗组和LOS治疗组能有效改善UUO大鼠的肾脏间质纤维化,OM组和LOS组中各时间点ColⅠ和FN蛋白的表达均分别低于UUO组(P0.05)。结论氧化苦参碱在一定程度上可减轻UUO大鼠肾间质纤维化程度,延缓肾脏间质纤维化。

关键词：氧化苦参碱肾间质纤维化 Ⅰ型胶原纤维连接蛋白大鼠

Hamiltonian Tri-Integrable Couplings of the AKNS Hierarchy

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Communications in Theoretical Physics 2013年第4期59卷 385-392页

作者： MENG jing-Han ma Wen-Xiu Department of mathematics and Statistics University of South Florida 4202 E. Fowler Avenue Tampa FL 33620 USA

We propose a systematic approach for generating Hamiltonian tri-integrable couplings of soliton hierarchies. The resulting approach is based on semi-direct sums of matrix Lie algebras consisting of 4× 4 block matrix Lie algebras. We apply the approach to the AKNS soIRon hierarchy, and Hamiltonian structures of the obtained tri-integrable couplings are constructed by the variational identity.

关键词： tri-integrable coupling non-semisimple matrix loop algebra AKNS hierarchy bi-Hamiltonianstructure symmetry conservation law

A Kind of Atomic Coherent State as a Two-Mode Squeezed State

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Communications in Theoretical Physics 2009年第9期52卷 511-516页

作者： ma Shan-Jun WANG Shu-jing College of Physics and Communication Electronics Jiangxi Normal University Nanchang 330022 China

We find that a kind of atomic coherent state, formed as exp[ ξJ＋-ξJ-]｜00〉,when the SU（2） generators J± are taken as Fan＇s form J＋=（1/2）（α1-α2）（α1-α2）,J-=（1/2）（α1＋α2）（α1＋α2）,and J0=（1/2）（α1α2-α1α2）,is simultaneously a two-mode squeezed state. We analyse this squeezed state＇s physical properites, such as the cross- correlation function, the Wigner function, and its marginal distribution as well as the Husimi function.

关键词： exponential operator cross-correlation function Wigner function Husimi function

Upper atmospheric rotation rate from orbit analysis

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Science China(Physics,Mechanics & Astronomy) 2008年第8期51卷 1164-1169页

作者： ma jingYuan ZHANG jing CHENG MinKang Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008China Center for Space Research University of Texas at AustinAustinTX78757US

The rotation speed Λ of the upper atmosphere,mainly at heights of 180-360 km,was evaluated from the changes in orbital inclinations of GFZ. The results indicate that the value of Λ(in rev/d) decreases from 1.2 at 36... 详细信息

关键词： upper atmosphere inclination orbit decay

Near-field magnetic induction communication device for underground wireless communication networks

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Science China(Information Sciences) 2014年第12期57卷 157-167页

作者： ma jing ZHANG XiaoTong HUANG QiWei School of Computer and Communication Engineering University of Science and Technology Beijing

Electromagnetic(EM)waves are the most versatile and widely adopted physical layer technology for underground wireless communication networks(UWCNs).However,they are not suitable for underground communication especially when coils are buried in ***-inductive(MI)communication is a promising technique for UWCNs;it is not affected by large propagation delays,multipath propagation,and ***,MI communication has lower transmitting power and smaller antenna size than EM.A near-field low-power communication device with an electrically small antenna for low-frequency UWCNs is proposed in this *** device can be easily buried *** proposed device is analyzed in terms of basic communication metrics,i.e.,magnetic field intensity,bandwidth,path losses,and received *** of these four metrics shows that the experimental data closely match those of the theoretical model,and the maximum communication distance of 28.5 m,can be ***,according to the experimental results of our device,we further propose the modified received power *** show that the device exhibits good performance and can be used as a stand-alone module in directional underground wireless communication.

关键词： magnetic induction low power electrically small antenna underground wireless communication received power model