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Gregory Solid Construction for Polyhedral Volume Parameterization by Sparse Optimization

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Applied Mathematics(A Journal of Chinese Universities) 2019年第3期34卷 340-355页

作者： HU Chuan-feng lin hong-wei School of Mathematics Zhejiang UniversityHangzhou 310027China State Key Lab of CAD&CG Zhejiang UniversityHangzhou 310027China

In isogeometric analysis,it is frequently required to handle the geometric models enclosed by four-sided or non-four-sided boundary patches,such as trimmed *** this paper,we develop a Gregory solid based method to parameterize those ***,we extend the Gregory patch representation to the trivariate Gregory solid ***,the trivariate Gregory solid representation is employed to interpolate the boundary patches of a geometric model,thus generating the polyhedral volume *** improve the regularity of the polyhedral volume parametrization,we formulate the construction of the trivariate Gregory solid as a sparse optimization problem,where the optimization objective function is a linear combination of some terms,including a sparse term aiming to reduce the negative Jacobian area of the Gregory ***,the alternating direction method of multipliers(ADMM)is used to solve the sparse optimization *** of experimental examples illustrated in this paper demonstrate the effectiveness and efficiency of the developed method.

关键词： Gregory solid Polyhedral volume parametrization Sparse optimization Regularity Isogeometric analysis

Exact Solutions to Extended Nonlinear Schrodinger Equation in Monomode Optical Fiber

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Communications in Theoretical Physics 2006年第1期45卷 131-134页

作者： BAI Cheng-lin ZHAO hong Wang wei-Tao Physical Science and Information Engineering School Liaocheng University Liaocheng 252059 China

By using the generally projective Riccati equation method, more new exact travelling wave solutions to extended nonlinear Schrodinger equation （NLSE）, which describes the femtosecond pulse propagation in monomode optical fiber, are found, which include bright soliton solution, dark soliton solution, new solitary waves, periodic solutions, and rational solutions. The finding of abundant solution structures for extended NLSE helps to study the movement rule of femtosecond pulse propagation in monomode optical fiber.

关键词： extended NLSE generally projective Riccati equation method soliton solutions optical fiber

Data driven composite shape descriptor design for shape retrieval with a VoR-Tree

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Applied Mathematics(A Journal of Chinese Universities) 2018年第1期33卷 88-106页

作者： WANG Zi-hao lin hong-wei XU Chen-kai School of Mathematical Science State Key Lab.of CAD&CG Zhejiang University

We develop a data driven method(probability model) to construct a composite shape descriptor by combining a pair of scale-based shape descriptors. The selection of a pair of scale-based shape descriptors is modeled as the computation of the union of two events, i.e.,retrieving similar shapes by using a single scale-based shape descriptor. The pair of scale-based shape descriptors with the highest probability forms the composite shape descriptor. Given a shape database, the composite shape descriptors for the shapes constitute a planar point set.A VoR-Tree of the planar point set is then used as an indexing structure for efficient query operation. Experiments and comparisons show the effectiveness and efficiency of the proposed composite shape descriptor.

关键词： shape descriptor shape retrieval shape analysis data-driven model

The convergence rate and necessary-and-sufficient condition for the consistency of isogeometric collocation method

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Applied Mathematics(A Journal of Chinese Universities) 2022年第2期37卷 272-289页

作者： lin hong-wei XIONG Yun-yang HU Hui YAN Jia-cong HU Qian-qian School of Mathematical Science Zhejiang UniversityHangzhou 310027China Department of Mathematics Zhejiang Gongshang UniversityHangzhou 310018China

Although the isogeometric collocation(IGA-C)method has been successfully utilized in practical applications due to its simplicity and efficiency,only a little theoretical results have been established on the numerical analysis of the IGA-C *** this paper,we deduce the convergence rate of the consistency of the IGA-C ***,based on the formula of the convergence rate,the necessary and sufficient condition for the consistency of the IGA-C method is *** results advance the numerical analysis of the IGA-C method.

关键词： isogeometric collocation consistency necessary and sufficient condition convergence rate

Morphologic observation and classification criteria of atretic follicles in guinea pigs

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第5期11卷 307-314页

作者： wei WANG hong-lin LIU wei TIAN Fen-fen ZHANG Yan GONG Jin-wei CHEN Da-gan MAO Fang-xiong SHI College of Animal Science and Technology Nanjing Agricultural University Nanjing 210095 China

There is a lack of appropriate classification criteria for the determination of atretic follicles in guinea *** the present study,new criteria were established based on the latest morphologic criteria for cell death proposed by the Nomenclature Committee on Cell Death(NCCD) in *** of guinea pigs were sampled on different stages of estrous cycle,and the morphologic observations of atretic follicles were investigated in serial *** results showed that the process of follicular atresia could be classified into four continuous stages:(1) the granulosa layer became loose,and some apoptotic bodies began to appear;(2) the granulosa cells were massively eliminated;(3) the theca interna cells differentiated;and(4) the residual follicular cells *** addition,the examination revealed that these morphologic criteria were accurate and *** conclusion,this study provides new criteria for the classification of atretic follicles in guinea pigs,and this knowledge can inform future research in the area.

关键词： Guinea pig Follicular atresia Classification criteria

Measurement of GaN/Ge（001） Heterojunction Valence Band Offset by X-Ray Photoelectron Spectroscopy

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Chinese Physics Letters 2010年第6期27卷 183-186页

作者： GUO Yan LIU Xiang-lin SONG Hua-Ping YANG An-Li ZHENG Gao-lin wei hong-Yuan YANG Shao-Yan ZHU Qin-Sheng WANG Zhan-Guo Key Laboratory of Semiconductor Materials Science Institute of Semiconductors Chinese Academy of Sciences PO Box 912 Beijing 100083

X-ray photoelectron spectroscopy has been used to measure the valence band offset （VBO） at the GaN/Ge heterostructure interface. The VBO is directly determined to be 1.13 ±0.19 eV, according to the relationship between the conduction band offset AEc and the valence band offset △Ev：△Ec =EgGaN -EgGe - △Ev, and taking the room-temperature band-gaps as 3.4 and 0.67eV for GaN and Ge, respectively. The conduction band offset is deduced to be 1.6±0.19 eV, which indicates a type-I band alignment for GaN/Ge. Accurate determination of the valence and conduction band offsets is important for the use of GaN/Ge based devices.

关键词： GALLIUM nitride HETEROJUNCTIONS X-ray photoelectron spectroscopy SEMICONDUCTOR junctions CONDUCTION band TEMPERATURE effect ENERGY gaps (Physics)

Inhibitory effects of apigenin on the growth of gastric carcinoma SGC-7901 cells

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World Journal of Gastroenterology 2005年第29期11卷 4461-4464页

作者： Kun Wu lin-hong Yuan wei Xia Department of Nutrition and Food Hygiene Public Health College Harbin Medical University Harbin 150001 Heilong jiang Province China

AIM： To explore the growth inhibition and apoptosisinducing effect of apigenin on human gastric carcinoma SGC-7901 cells. METHODS： The effects of apigenin on the growth, clone formation and proliferation of human gastric carcinoma SGC-7901 cells were observed by N-rr, done-forming assay, and morphological observation. Fluorescent staining and flow cytometry analysis were used to detect apoptosis of cells. RESULTS： Apigenin obviously inhibited the growth, clone formation and proliferation of SGC-7901 cells in a dosedependent manner. Inhibition of growth was observed on d 1 at the concentration of 80 μmol/L, while after 4 d, the inhibition rate （IR） was 90%. The growth IRs at the concentration of 20, 40, and 80 μmol/L were 38%, 71%, and 99% respedJvely on the 7^th d. After the cells were treated with apigenin for 48 h, the number of clone-forming in control, 20, 40, and 80 μmol/L groups was 217±16.9, 170±11.1 （P〈0.05）, 98±11.1 （P〈0.05）, and 25±3.5 （P〈0.05） respectively. Typical morphological changes of apoptosis was found by fluorescent staining. The cell nuclei had lost its smooth boundaries, chromatin was condensed, and cell nuclei were broken. Flow cytometry detected typical apoptosis peak. After the cells were treated with apigenin for 48 h, the apoptosis rates were 5.76%, 19.17%, and 29.30% respectively in 20, 40, and 80 μmol/L groups. CONCLUSION： Apigenin shows obvious inhibition on the growth and clone formation of SGC-7901 cells by inducing apoptosis.

关键词： Apigenin Apoptosis Anti-cancer effect Gastric carcinoma

Experimental Study on Springback of Sheet Metal Single Point Incremental Forming

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International Journal of Plant Engineering and Management 2011年第1期16卷 60-64页

作者： LIANG Ying GAO lin wei hong-yu LU Ren-wei College of Mechanical and Electrical Engineering Nanjing University of Aeronautics & Astronautics Nanjing 210016 P.R. China

Sheet metal single point incremental forming （SPIF） is a new technology for flexible process. The springback phenomenon in single point incremental forming has been discussed. Effects of forming angle and shape of the part are analysed using simple experimental method. Tool diameter, sheet thickness, step size, material parameters and the interaction of them are also analysed by using orthogonal test. The results show that the primary factor af- fecting springback is forming angle. In addition, springback is decreased when the specimen has a larger forming angle. The order of the four factors that influence springback is tool diameter, sheet thickness, step size and material parameters. The forming precision will increase if springabck is decreased by optimizing the forming parameters.

关键词： incremental forming springback orthogonal test forming parameters

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妇道的养成——以晚清湘乡曾氏为例的探讨

浙江学刊 2005年第5期 210-217页

作者：林维红台湾大学

本文以晚清湘乡曾氏家族史料为基础,探讨了曾氏家庭教育中的性别建构,尤其是妇道的养成。虽然曾家男女有别,在实践的层次上,曾家并未僵守“男主外,女主内”的限制。男性实际内外兼管,男子除读书求功名,也要理财、洒扫、收粪、锄草;女子... 详细信息

本文以晚清湘乡曾氏家族史料为基础,探讨了曾氏家庭教育中的性别建构,尤其是妇道的养成。虽然曾家男女有别,在实践的层次上,曾家并未僵守“男主外,女主内”的限制。男性实际内外兼管,男子除读书求功名,也要理财、洒扫、收粪、锄草;女子除女红,也要能文能诗,知书达礼,以期其创以和为尚的家庭生活秩序。

关键词：妇道家庭教育晚清曾氏家族湖南家庭生活秩序性别教育