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Glioma Segmentation-Oriented Multi-Modal MR Image Fusion With Adversarial Learning

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IEEE/CAA Journal of Automatica Sinica 2022年第8期9卷 1528-1531页

作者： Yu Liu Yu shi Fuhao Mu juan Cheng Xun Chen Department of Biomedical Engineering Hefei University of TechnologyHefei 230009 Anhui Province Key Laboratory of Measuring Theory and Precision Instrument Hefei University of TechnologyHefei 230009China Department of Neurosurgery the First Affiliated Hospital of USTCDivision of Life Sciences and Medicineand also with the Department of Electronic Engineering and Information ScienceUniversity of Science and Technology of ChinaHefei 230001China

Dear Editor,In recent years,multi-modal medical image fusion has received widespread attention in the image processing ***,existing works on medical image fusion methods are mostly devoted to pursuing high performance... 详细信息

关键词： Image image devoted

Removal of phenol by activated alumina bed in pulsed high-voltage electric field

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Journal of Environmental Sciences 2007年第4期19卷 409-415页

作者： ZHU Li-nan MA jun YANG shi-dong School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China

A new process for removing the pollutants in aqueous solution-activated alumina bed in pulsed high-voltage electric field was investigated for the removal of phenol under different conditions. The experimental results indicated the increase in removal rate with increasing applied voltage, increasing pH value of the solution, aeration, and adding Fe^2＋. The removal rate of phenol could reach 72.1% when air aeration flow rate was 1200 ml/min, and 88.2% when 0.05 mmol/L Fe^2＋ was added into the solution under the conditions of applied voltage 25 kV, initial phenol concentration of 5 mg/L, and initial pH value 5.5. The addition of sodium carbonate reduced the phenol removal rate. In the pulsed high-voltage electric field, local discharge occurred at the surface of activated alumina, which promoted phenol degradation in the thin water film. At the same time, the space-time distribution of gas-liquid phases was more uniform and the contact areas of the activated species generated from the discharge and the pollutant molecules were much wider due to the effect of the activated alumina bed. The synthetical effects of the pulsed high-voltage electric field and the activated alumina particles accelerated phenol degradation.

关键词： pulsed high-voltage electric field hybrid gas-liquid electrical discharge activated alumina phenol Fenton's reaction water treatment

Optimal design of culling compensation policy under the African swine fever——Based on simulations of typical pig farms in China

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Journal of Integrative Agriculture 2023年第2期22卷 611-622页

作者： GUO shi-juan Lü Xin-ye HU Xiang-dong Institute of Agricultural Economics and Development Chinese Academy of Agricultural SciencesBeijing 100081P.R.China Institute of Agricultural Information and Economy Shandong Academy of Agricultural SciencesJinan 250000P.R.China

This paper aims to optimize the culling compensation policy from a micro perspective through scenario *** on an investigation of 273 pig farms in eight regions,four typical pig farms were constructed according to farm size and breeding mode,representing the swine producers in ***,a decision objective function of pig farms facing suspected African swine fever(ASF)outbreaks was *** study used a mathematical programming model to design and simulate scenarios based on compensation standards and local implementation levels,aiming to incentivize pig farms to report *** results show that the optimal decisions on epidemic reports differed among typical farms and by herd daily *** results suggest the following adjustments for optimizing culling compensation policies:(1)to set culling compensation standards based on the market value and(2)to maintain a high level of epidemic surveillance capability in the animal husbandry and veterinary sector.

关键词： culling compensation African swine fever epidemic report mathematical programming model

PRECONDITIONING HIGHER ORDER FINITE ELEMENT SYSTEMS BY ALGEBRAIC MULTIGRID METHOD OF LINEAR ELEMENTS

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Journal of Computational Mathematics 2006年第5期24卷 657-664页

作者： Yun-qing Huang shi Shu Xi-jun Yu Hunan Key Laboratory for Computation and Simulation in Science and Engineering Institute for Computational and Applied Mathematics Xiangtan University Xiangtan 411105 China Laboratory of Computational Physics Institute of Applied physics and Computational Mathematics Beijing 100088 China

We present and analyze a robust preconditioned conjugate gradient method for the higher order Lagrangian finite element systems of a class of elliptic problems. An auxiliary linear element stiffness matrix is chosen to be the preconditioner for higher order finite elements. Then an algebraic multigrid method of linear finite element is applied for solving the preconditioner. The optimal condition number which is independent of the mesh size is obtained. Numerical experiments confirm the efficiency of the algorithm.

关键词： Finite element Algebraic multigrid methods Preconditioned Conjugate Gradient Condition number.

Preparation of SiC Fiber Reinforced Nickel Matrix Composite

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Journal of Materials Science & Technology 2012年第3期28卷 234-240页

作者： Lu Zhang Nanlin shi jun Gong Chao Sunt Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

A method of preparing continuous（Al＋Al2O3）-coated SiC fiber reinforced nickel matrix composite was presented,in which the diffusion between SiC fiber and nickel matrix could be *** sputtering is used to deposit Ni coating on the surface of the（Al＋Al2O3）-coated SiC fiber in preparation of the precursor *** is shown that the deposited Ni coating combines well with the（Al＋Al2O3） coating and has little negative effect on the tensile strength of（Al＋Al2O3）-coated SiC ***-state diffusion bonding process is employed to prepare the（Al＋Al2O3）-coated SiC fiber reinforced nickel matrix with 37% fibers in *** solid-state diffusion bonding process is optimized and the optimum parameters are temperature of 870,pressure of 50 MPa and holding time of 2 *** this condition,the precursor wires can diffuse well,composite of full density can be formed and the（Al＋Al2O3） coating is effective to restrict the reaction between SiC fiber and nickel matrix.

关键词： SiC fiber Composite Diffusion barrier layer Precursor wire

BIDIRECTIONALLY COUPLED SYNCHRONIZATION OF THE GENERALIZED LORENZ SYSTEMS

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Journal of Systems Science & Complexity 2011年第3期24卷 433-448页

作者： juan CHEN jun-an LU Xiaoqun WU School of Mathematics and Statistics Wuhan University Wuhan 430072 China

Wu, Chen, and Cai （2007） investigated chaos synchronization of two identical generalized Lorenz systems unidirectionally coupled by a linear state error feedback controller. However, bidirec- tional coupling in real life such as complex dynamical networks is more universal. This paper provides a unified method for analyzing chaos synchronization of two bidirectionally coupled generalized Lorenz systems. Some sufficient synchronization conditions for some special coupling matrices （diagonal ma- trices, so-called dislocated coupling matrices, and so on） are derived through rigorously mathematical theory. In particular, for the classical Lorenz system, the authors obtain synchronization criteria which only depend upon its parameters using new estimation of the ultimate bounds of Lorenz system （Chaos, Solitons, and Fractals, 2005）. The criteria are then applied to four typical generalized Lorenz systems in the numerical simulations for verification.

关键词： Bidirectionally-coupled chaos generalized lorenz system synchronization ultimate bound.

Effect of Sr on Grain Refinement of Mg–3%Al Alloy Containing Trace Fe by Carbon-Inoculation

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Journal of Materials Science & Technology 2016年第12期32卷 1297-1302页

作者： jun Du Yutong shi Mingchuan Zhou Wenfang Li School of Materials Science and Engineering South China University of Technology

Magnesium（Mg）-3% aluminum（Al）（in weight） alloy was modified by carbon（C） inoculation combining with strontium（Sr）.The effects of trace 0.1% iron（Fe） addition and operating sequence of carboninoculation and Fe addition on the grain size of Mg-3%Al alloy were *** results reveal that the Sr addition could effectively suppress grain-coarsening resulted from the inclusion of Fe in the carboninoculated Mg-Al *** addition could contribute to the formation of the duplex-phase particles that Al-C-rich phases coated on Al-Fe or Al-C-Fe-rich phases,regardless of the Fe addition *** duplex-phase particles should be the potent substrates for α-Mg ***,Sr addition could effectively subsidize the inhibiting effect of Fe on grain refinement and the active nuclei were *** other words,Sr plays a counter role in the poisoning effect of Fe on the microstructure of Mg-3%Al alloy.

关键词： Magnesium alloy Grain refinement Carbon-inoculation Nucleating substrate Poisoning-free

Lung Nodules Detection in CT Images Using Gestalt-Based Algorithm

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Chinese Journal of Electronics 2016年第4期25卷 711-718页

作者： QIU shi WEN Desheng CUI Ying FENG jun Xi'an Institute of Optics and Precision Mechanics of CAS University of Chinese Academy of Sciences College of Equipment Engineering Engineering University of Chinese Armed Police Force School of Information Science and Technology Northwest University

To overcome low accuracy and high false positive of existing computer-aided lung nodules *** propose a novel lung nodule detection scheme based on the Gestalt visual cognition *** proposed scheme involves two parts which simulate human eyes cognition features such as simplicity,integrity and ***,lung region was segmented from lung Computed tomography(CT) *** local threedimensional information was integrated into the Maximum intensity pro jection(MIP) images from axial,coronal and sagittal *** this way,lung nodules and vascular are strengthened and discriminated based on pathologic image characteristics of lung *** experimental database includes fifty-three high resolution CT images contained lung nodules,which had been confirmed by *** experimental results show that,the accuracy rate of the proposed algorithm achieves 91.29%.The proposed framework improves performance and computation speed for computer aided nodules detection.

关键词： Computer-aided detection(CAD) Lung nodules Maximum intensity pro jection(MIP)

SYNTHESIS OF CROSS-CONJUGATED(p-PHENYLENE)S-POLY(p-PHENYLENEVINYLENE)S HYBRIDS WITH LOW CONTENT OF STRUCTURAL DEFECTS

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Chinese Journal of Polymer Science 2007年第2期25卷 171-179页

作者： shi-jun Zheng Qun Xu Shao-kui Cao College of the Material Science and Engineertng Zhengzhou University Zhengzhou 450052 China

The novel shish-kebab-type liquid crystalline cross-conjugated （p-phenylene）s-poly（p-phenylenevinylene）s hybrid was synthesized through Gilch polymerization. Their structures and properties were characterized by NMR, GPC, DSC, X-ray diffraction and polarizing optical microscope （POM）. ^1H-NMR investigation of the polymers indicates that the shish-kebab-structure has a strong ability to suppress the structural defects in the polymers. The polymers are enantiotropic liquid crystals. The melting point （Tm） of the polymers decreases when the length of the alkoxy tails of the mesogenic units increases. The mesophase was identified by X-ray diffraction method. They showed not only a smectic LC phase, but also a strong green fluorescence in chloroform. The maximum absorption band of the ＂kebabs＂ of the two, 5-bis（4＇- alkoxyphenyl）benzene at 280 nm did not appear in absorption spectra of the polymers. The same phenomena were also observed in the fluorescence spectra. These results imply that the polymers have formed a cross-conjugated uniform structure and achieved an extended n-conjugation polymer.

关键词： Gilch polymerization Conjugated polymer Liquid crystal shish-kebab Fluorescence.