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林克明旧居修缮与活化利用,广州,广东,中国

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世界建筑 2024年第8期 64-69页

作者： Guangdong Architectural Design and Research institute Group Co.,Ltd. Architectural Design and Research institute of South china university of Technology 广东省建筑设计研究院集团股份有限公司华南理工大学建筑设计研究院有限公司

街区断点更新林克明旧居(简称旧居)1935年由中国第一代著名建筑师林克明设计建造。旧居所在的越秀北路原为民国初年广州城墙拆除后的城基路,城外即东濠涌,前后高差达8m。林克明巧妙地利用地形组织功能与空间,并采用摩登建筑理念,使建筑... 详细信息

街区断点更新林克明旧居(简称旧居)1935年由中国第一代著名建筑师林克明设计建造。旧居所在的越秀北路原为民国初年广州城墙拆除后的城基路,城外即东濠涌,前后高差达8m。林克明巧妙地利用地形组织功能与空间,并采用摩登建筑理念,使建筑形体呈现出迷人的风采。

关键词：建筑形体建筑理念活化利用功能与空间著名建筑师林克明修缮城墙

Topological Structures of ω-subsets in Symplectic Groups

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Acta Mathematica Sinica,English Series 1999年第2期15卷 255-268页

作者： Yiming Long, nankai institute of mathematics, nankai university, tianjin 300071, P. R. chinaE-mail: longym@sun. nankai, edu. cn 南开大学南开数学所天津

All the symplectic matrices possessing a fixed eigenvalue ω on the unit circle form a hypersurface in the real symplectic group Sp(2n). This paper is devoted to the study of the topological structures of this hypersu... 详细信息

关键词： Symplectic groups ω-subsets Toplogical structure

Normal Forms of Symplectic Matrices

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Acta Mathematica Sinica,English Series 2000年第2期16卷 237-260页

作者： Yiming Long nankai institute of mathematics.nankai university,tianjin 300071,P.R.china Di Dong Department of mathematics.SUNY at Stony Brook,Stony Brook,NY 111794-3651,USA Associate Member of the ICTP nankai institute of mathematics Nankai University Tianjin 300071 P. R. China Department of mathematics SUNY at Stony Brook Stony Brook NY 111794-3651 USA

In this paper,we prove that for every symplectic matrix M possessing eigenvalues on the unit circle,there exists a symplectic matrix P such that P-1 MP is a symplectic matrix of the normal forms defined in this paper.

关键词： Normal form Symplectic matrix Eigenvalue Symplectic transformation

CHARACTERIZATION OF THE UPPER SUBDERIVATIVE AND ITS CONSEQUENCES IN NONSMOOTH ANALYSIS

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Chinese Annals of mathematics,Series B 1991年第4期12卷 480-494页

作者：王运通 nankai institute of mathematics Nankai University Tianjin China

It is proved that the upper subderivative of a lower semicontinuous function on a Banach space is upper semicontinuous for the first variable as x′→f x, i. e., x′-x, f(x′)-f(x). By taking account of the work of Treiman. it is further shown that the upper subderivative of a 1. s. c. function is the upper limit of the contingent directtional derivatives around the concorned point. This new characterization of the upper suoberivative allows simple derivations and natural extension of many results' in nonsmooth analysis.

关键词：七气任才二阳 notions neighborhood 拍脚 Hadamard Regular translate 云一

Stochastic DEA model with undesirable outputs: An application to the prediction of anti-HIV therapy efficiency

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Progress in Natural Science:Materials International 2006年第7期16卷 753-759页

作者： BIAN Fuping and TANG Xiaoqin ( Department of mathematics, School of Science, tianjin university, tianjin 300072, china Liuhui institute of Applied mathematics, nankai university and tianjin university, tianjin 300072, china) tianjin Univ Sch Sci Dept Math Tianjin 300072 Peoples R China nankai Univ Liuhui Inst Appl Math Tianjin 300072 Peoples R China

This paper proposes a stochastic prediction DEA model with undesirable outputs and simplifies the process using chance-constrained techniques in order to obtain an equivalent linear programming formulation. The existence and stability of the optimal solutions have been proved. And the model is used to describe and predict the efficiency of anti-HIV therapy in AIDS patients.

关键词： data envelopment analysis (DEA) decision making units (DMU) undesirable outputs stochastic DEA model anti-HIV therapy.

Geometric characterizations for variational minimization solutions of the 3-body problem

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Chinese Science Bulletin 1999年第18期44卷 1653-1655页

作者： LONG Yiming and ZHANG Shiqing1. nankai institute of mathematics , nankai university , tianjin 300071 , china 2. Department of Applied mathematics, Chongqing university, Chongqing 400044, china Associate Member of the ICTP. nankai institute of mathematics Nankai University Tianjin China Department of Applied mathematics Chongqing University Chongqing China

For any given positive masses it is proved that the variational minimization solutions of the 3-body problem in 3 or 2 are precisely the planar equilateral triangle circular solutions found by J. Lagrange in 1772, and that the variational minimization solutions of the circular restricted 3-body problem in 3 or 2 are also planar equilateral triangle circular solutions.

关键词： 3-body problem variational minimization equilateral triangle circular solution.

Shape description matrix and its applications to color-image retrieval and recognition

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Science china(Technological Sciences) 2004年第2期47卷 159-165页

作者： WANG Yi,ZHAI Hongchen,LIANG Yanmei,ZHANG Siyuan & MU Guoguang institute of Modern Optics,nankai university,tianjin 300071,china Key Laboratory of Information Sci-ence and Technology MOE,tianjin 300071,china institute of Modern Optics Nankai University Tianjin China Key Laboratory of Information Science and Technology MOE Tianjin China

Shape description matrix (SDM) describing regional pixel distribution characteristics of images is defined, with both radial and angular distribution messages taken into account to offer a comprehensive and exact description of the shape characteristics even upon a blurred edge. Using this SDM, a general color histogram (GCH) is developed. Both theoretical and experimental results show that the GCH can be applied to color-image retrievals and recognitions with a high efficiency.

关键词： SDM, similarity degree, match degree, general color histogram.

Molecular mechanism of the inhibitory effect of methylation outside the recognition sequence of restriction endonuclease Pvu Π on its cleavage activity

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Chinese Science Bulletin 1998年第1期43卷 47-52页

作者： CHEN Defeng, SUN Mei, LIU Yingmiao, SHI Guoli and CHEN Yawen institute of Molecular Biology, nankai university, tianjin 300071, china institute of Molecular Biology Nankai University Tianjin China

In 1991, we found that methylation outside the PvuⅡ recognition sequence could partially inhibit its cleavage activity. To clarify the molecular mechanism, three plasmids with different methylation states were constructed. Then, together with the original one, four plasmids were digested with different amounts of PvuⅡ. Results show that methylation on both sites results in 90% inhibition; moving the methylated site one base further away decreases the inhibitory effect to about 30%; with the adjacent dam methylation site eliminated, the inhibitory effect disappears. The data suggest that the inhibition of cleavage activity caused by outside methylation is not "all or none", and the degree of inhibition is dependent on the position and the number of methylated bases.

关键词： methylation outside the recognition sequence molecular mechanism PCR sitespecific mutation restriction endonuclease PvuⅡ.

Arnold Conjecture for Product of Monotone Manifolds

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数学进展 1993年第5期 463-465页

作者：卢广存 nankai institute of mathematics nankai university tianjin 300071

Let （M,ω） be a 2n-dimensional compact symplectic manifold. Then every smoothr-periodic Hamiltonian function H:Sr×M→R gives rise to a Hamiltonian vectorfiele XH:Sr×M→TM via iXHω = dH, where Sr= R/rZ,r>0. We con... 详细信息

关键词： In Zn Arnold Conjecture for Product of Monotone Manifolds