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Chinese Spirits Identification Model Based on Mid-Infrared Spectrum

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Computers, Materials & Continua 2020年第9期64卷 1869-1883页

作者： Wu Zeng Zhanxiong Huo Yuxuan xie yingxiang Jiang Kun Hu School of Electrical and Electronic Engineering Wuhan Polytechnic UniversityWuhan430000China Gina Cody School of Engineering and Computer Science Concordia UniversityMontrealH3G 1M8Canada

Applying computer technology to the field of food safety,and how to identify liquor quickly and accurately,is of vital importance and has become a research *** this paper,sparse principal component analysis(SPCA)was applied to seek sparse factors of the mid-infrared(MIR)spectra of five famous vintage year Chinese *** results showed while meeting the maximum explained variance,23 sparse principal components(PCs)were selected as features in a support vector machine(SVM)model,which obtained a 97%classification *** comparison principal component analysis(PCA)selected 10 PCs as features but only achieved an 83%classification *** both approaches were better than a direct SVM approach based on the classification results(64%classification accuracy),they also demonstrated the importance of extracting sparse PCs,which captured most important *** combination of computer technology SPCA and MIR provides a new and convenient method for liquor identification in food safety.

关键词： Mid-infrared spectra Chinese spirits SPCA SVM liquor identification

Environmentally sustainable groundwater control during dewatering with barriers:A case study in Shanghai

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Underground Space 2021年第1期6卷 12-23页

作者： Zhi-Fei xie Shui-Long Shen Arul Arulrajah Suksun Horpibulsuk Department of Civil Engineering School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Civil and Environmental Engineering Shantou UniversityShantouChina Key Laboratory of Intelligent Manufacturing Technology(Shantou University) Ministry of EducationShantouGuangdong 515063China Department of Civil and Construction Engineering Swinburne University of TechnologyVictoria 3122Australia School of Civil Engineering and Center of Excellence in Innovation for Sustainable Infrastructure DevelopmentSuranaree University of TechnologyNakhon Ratchasima 30000Thailand

This paper presents a case study on groundwater control and environmental protection during a deep excavation of the foundation pit for the Liyang Road Station of Metro Line 10 in Shanghai.A three-dimensional finite element simulation model was constructed to quantify the effects of a dewatering process on the environment around the excavation *** understand the decrease in the groundwater level around the foundation pit,the ground settlement and groundwater level were *** the excavation,environmental protection methods were used in the design of the optimal watering system to check its detrimental environmental *** effects of the diaphragm wall and horizontal barrier system were analyzed by varying their insertion depths and the resulting changes in the ground settlement and groundwater level were *** was found that increasing the insertion depth of the diaphragm wall reduced settlement near the excavation site but increased the construction *** diaphragm wall used in combination with a horizontal barrier was found to be effective in arresting the decrease in groundwater level and reducing settlement around the excavation site.

关键词： Dewatering Horizontal barrier Diaphragm wall Ground settlement Drawdown Confined water

ZnO nanorods:morphology control, optical properties, and nanodevice applications

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Science China(Physics,Mechanics & Astronomy) 2013年第12期56卷 2243-2265页

作者： ZHOU WeiYa ZHANG XiaoXian ZHAO Duan GAO Min xie SiShen Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences

Research interest in ZnO nanostructures derives from their excellent luminescent properties and availability of low cost fabricating and processing,which hold promise for the development of electronic and optoelectronic *** this review,we focus on the progress in synthesis,properties and nanodevices of ZnO nanorod(NR)arrays and nanotetrapods(NTPs).Recent work done by the authors are also *** a brief introduction to the controlled fabrication methods for the highly-ordered ZnO NR arrays and NTPs,we present some aspects of the fundamental properties,especially optical performance,of ZnO NRs/***,we provide an overview of the applications to functional nanodevices based on individual NR and NTP of *** is demonstrated that different morphologies of ZnO nanostructures have salient effects on their properties and *** much progress has been achieved in the fundamental and applied investigations of ZnO NRs/NTPs over the past decade,many obstacles still remain,hampering further development in this ***,some longstanding problems that warrant further investigation are addressed.

关键词： ZnO nanostructures controlled growth optical property nanodevices

Petrology, Geochemistry and Tectonic Significance of the Metamorphic Peridotites from Longmuco-Shuanghu Ophiolitic Melange belt, Tibet

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Acta Geologica Sinica(English Edition) 2013年第2期87卷 426-439页

作者： WU Yanwang LI Cai xie Chaoming WANG Ming HU Peiyuan College of Earth Science Jilin University

Taoxinghu metamorphic peridotite is a firstly reported mantle sequence of ophiolite since Longmuco-Shuanghu-lancangjiang suture zone （LSLSZ） was proposed, and it is also an important discovered for ophiolite studying in central Qiangtang. Based on detailed analyses of whole-rock geochemistry of Taoxinghu metamorphic peridotites and contrast to metamorphic peridotites in typical ophiolites worldwide, the paper investigates their petrogenesis and geological implication. The petrologic results show that the protolith of Taoxinghu metamorphic perdotites have the mineral assemblage and texture characteristic of mantle peridotite. Most metamorphic peridotites hav near global abyssal peridotites major elements contents, while the few is similar to SSZ-type peridotites. They exhibit typically U-shaped REE patterns, characterized by slight enrichment of LREE and HREE relative to MREE and a low fractionated LREE to HREE segment. Trace elements contents are low and all samples are strong enrichment in Cs, U, Pb, weak enrichment in Ba and depletion in Th, but negative Nb anomalies are only observed in few samples. That suggests Taoxinghu metamorphic peridotites have depletion mantle and suprasubduction affinities. A two-stage evolution history is considered： Taoxinghu metamorphic peridotites originated as the residue from melting at a ridge with 7%-20% degree of fraction melting and were subsequently modified by interaction with mafic melt and aqueous fluid within mantle wedge on subducted zone. Combined with previous studies, we preliminarily propose Taoxinghu metamorphic peridotites may be the Products of initial rifting of palo-Tethys, forming at middle Ordivician-upper Cambrian, and they may be the direct evidences for spreading of palo-Tethys.

关键词： geochemistry metamorphic peridotite Taoxinghu Longmuco-Shuanghu suturezone Tibetan plateau

Stability analysis for variable spindle speed milling with helix angle using an improved semi-discretization method

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Science China Technological Sciences 2013年第3期56卷 648-655页

作者： xie QiZhi ZHANG QiChang WANG Wei JIN Gang HAN JianXin School of Mechanical Engineering Tianjin University Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control State Key Laboratory of Engines Tianjin University

Chatter in milling is still a main obstacle in surface finish,machining accuracy and tool *** prediction and avoidance are challenging subjects in the machining *** this paper,an improved semi-discretization method is proposed to predict variable spindle speed milling with helix *** on tool geometry and machining theory,the cutting region is divided into five different cases to calculate the cutting *** influences of radial immersion rate and modulation parameters relative to variable spindle speed milling are *** comparison with constant spindle speed,the simulation results show that the variable spindle speed scheme can obtain a larger range of *** short,the helix angle and variable spindle speed play an important role in the stability of milling process.

关键词： milling chatter semi-discretization helix angle variable spindle speed

A TV-l_1 Based Nonrigid Image Registration by Coupling Parametric and Non-parametric Transformation

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International Journal of Automation and computing 2015年第5期12卷 467-481页

作者： Wen-Rui Hu Yuan xie Lin Li Wen-Sheng Zhang Research Center of Precision Sensing and Control Institute of Automation Chinese Academy of Sciences

To overcome the conflict between the global robustness and the local accuracy in the dense nonrigid image registration,we propose a union registration approach using a l1-norm based term to couple the parametric transformation and the non-parametric transformation. On one hand, we take the parametric deformation field as a constraint for the non-parametric registration, which is a strong constraint that guarantees the robustness of the non-parametric registration result. On the other hand, the non-parametric deformation field is taken as a force to improve the accuracy of the parametric registration. Then, an alternating optimization scheme is carried out to improve the accuracy of both the parametric registration and the non-parametric registration. Moreover, accounting for the effect of spatially-varying intensity distortions and the sparse gradient prior of the deformation field, we adopt the residual complexity(RC) as the similarity metric and the total variation(TV) as the regularization. Because of the TV-l1-l2 composite property of the objective function in our union image registration, we resort to the split Bregman iteration for the complex problem solving. Experiments with both synthetic and real images in different domains illustrate that this approach outperforms the separately performed parametric registration or non-parametric registration.

关键词： Nonrigid registration free-form deformation non-pa

Experimental Study and Thermodynamic Optimization of the FeO-V_2O_3 System

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Journal of Iron and Steel Research International 2014年第10期21卷 910-914页

作者： Li ZENG Yu WANG Li-kai FAN Bing xie College of Materials Science and Engineering Chongqing University

Optimization of the phase diagram of FeO-V20a system is a part of an on-going research project to develop a self-consistent multi-component thermodynamic database for vanadium slag from hot metal. Due to the lack o{ ex- perimental data for optimization, a novel experimental investigation has been carried out by thermal analysis （DSC） with a series of slags on different V2 03 contents （i. e. 3mass%- 12mass%）. All available thermodynamic and phase diagram data for the binary systems have been simultaneously optimized with CALPHAD （Calculation of Phase Dia- grams） methods to give one set of model equations for the Gibbs free energy of the liquid slag as functions of compo- sition and temperature. The modified quasi-chemical model was used to describe the binary slag system. It was dem- onstrated that the calculated phase diagram with the optimized parameters was in good agreement with the experi- mental data.

关键词： calculated phase diagram thermal analysis modified quasi-chemical model vanadium slag

Dense Spatial-Temporal Graph Convolutional Network Based on Lightweight OpenPose for Detecting Falls

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Computers, Materials & Continua 2023年第10期77卷 47-61页

作者： Xiaorui Zhang Qijian xie Wei Sun Yongjun Ren Mithun Mukherjee School of Computer Science Nanjing University of Information Science&TechnologyNanjing210044China Wuxi Research Institute Nanjing University of Information Science&TechnologyWuxi214100China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjing210044China School of Automation Nanjing University of Information Science&TechnologyNanjing210044China School of Artificial Intelligence Nanjing University of Information Science&TechnologyNanjing210044China

Fall behavior is closely related to high mortality in the elderly,so fall detection becomes an important and urgent research ***,the existing fall detection methods are difficult to be applied in daily life due to a large amount of calculation and poor detection *** solve the above problems,this paper proposes a dense spatial-temporal graph convolutional network based on lightweight *** OpenPose uses MobileNet as a feature extraction network,and the prediction layer uses bottleneck-asymmetric structure,thus reducing the amount of the *** bottleneck-asymmetrical structure compresses the number of input channels of feature maps by 1×1 convolution and replaces the 7×7 convolution structure with the asymmetric structure of 1×7 convolution,7×1 convolution,and 7×7 convolution in *** spatial-temporal graph convolutional network divides the multi-layer convolution into dense blocks,and the convolutional layers in each dense block are connected,thus improving the feature transitivity,enhancing the network’s ability to extract features,thus improving the detection *** representative datasets,Multiple Cameras Fall dataset(MCF),and Nanyang Technological University Red Green Blue+Depth Action Recognition dataset(NTU RGB+D),are selected for our experiments,among which NTU RGB+D has two evaluation *** results show that the proposed model is superior to the current fall detection *** accuracy of this network on the MCF dataset is 96.3%,and the accuracies on the two evaluation benchmarks of the NTU RGB+D dataset are 85.6%and 93.5%,respectively.

关键词： Fall detection lightweight OpenPose spatial-temporal graph convolutional network dense blocks

The fabrication and optimization of OTFT formaldehyde sensors based on Poly(3-hexythiophene)/ZnO composite films

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Science China(Technological Sciences) 2013年第8期56卷 1877-1882页

作者： LI Xian JIANG YaDong TAI HuiLing xie GuangZhong DAN WenChao State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic InformationUniversity of Electronic Science and Technology of China(UESTC)

Formaldehyde(HCHO),a colorless and pungent-smelling gas,is confirmed be a huge threat to human *** detection of formaldehyde is necessary and *** Poly(3-hexythiophene)(P3HT)/ZnO organic-inorganic composite thin film was fabricated and used as the sensitive layer of organic thin film transistors(OTFT) by spray-deposited method to detect HCHO at room *** process parameters such as P3HT/ZnO weight ratios and airbrushed masses were *** results showed that P3HT/ZnO OTFT exhibited good sensing response to *** mass of 1ml was the optimal mass,and the 1:1 and 1:5 weight ratios of P3HT/ZnO exhibited better sensing properties compared with *** gas sensors based on P3HT/ZnO composite film provides a novel promising approach to the detection of HCHO.

关键词： formaldehyde Poly(3-hexythiophene)/ZnO composite Organic Thin Film Transistors(OTFT)