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Study on Green Residential Space Design

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IJLAI Transactions on Science and Engineering

IJLAI Transactions on science and Engineering 2024年第1期2卷 32-37页

作者： Yu Jiang Shenyang normal university No.253 Huanghe North Street Shenyang 110034China

With the ever-changing nature,green ecology has become an international trend of ***,the green ecological design of residential space has become the main melody of people’s *** always implement the concept of ecological and environmental protection in the design process,attach importance to the ecological effect of residential space,carry out reasonable budget and use of environmentally friendly decorative materials,reduce the waste of materials,save money and save resources at the same time,and protect the *** the same time,people began to put their hopes on the residential space design,which made the green residential space design began to *** the bold exploration and practice of designers,the design of green residential space will be endowed with more distinctive characteristics and unique *** from the concept of green design,this paper explores the method of green space design through typical analysis.

关键词： Green Residential space Haze

Orbits Heteroclinic to Invariant Manifolds

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Acta Mathematica Sinica,English Series 1996年第4期12卷 372-373,375-378页

作者： Zhu Deming Department of mathematics East china normal university shanghai, 200062 china Department of mathematics East China Normal University Shanghai China

Using the theory of invariant manifolds, we give local expressions of the stable and unstable manifolds for normally hyperbolic invariant tori, and study the existence of transverse orbits heteroclinic to hyperbolic i... 详细信息

关键词： Invariant manifold Exponential dichotomy Heteroclinic orbit Transversality

The Relative Canonical Algebra for Genus 4 Fibrations

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Acta Mathematica Sinica,English Series 1995年第1期11卷 44-52页

作者： Cai Jinxing Department of mathematics East china normal university shanghai,200062 china harm.showa-u.ac.jp

In this paper,we prove that for the genus 4 fibration,the relative canonical algebra is generated in degrees ≤3.

关键词： HO The Relative Canonical Algebra for Genus 4 Fibrations

Harmonic maps with potential from complete manifolds

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Chinese science Bulletin 1998年第21期43卷 1780-1786页

作者： CHEN Qun mathematics Department, Central china normal university, Wuhan 430079, china Institute of mathematics, Fudan university, shanghai 200433, china mathematics Department Central China Normal University Wuhan China Institute of mathematics Fudan University Shanghai China

Harmonic maps with potential from complete manifolds are considered. This is a new kind of maps more general than the usual harmonic maps relating to many interesting problems such as equilibrium system of ferromagnetic spin chain and Neumann motion. Aiming at the general properties, the author derives basic gradient estimates and then Liouville type results for these maps, which are interesting in constrast to those of the usual harmonic maps for the presence of potentials.

关键词： harmonic maps potential ferromagnetic chain gradient estimate.

On Indecomposable Definite Unimodular Hermitian Forms

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Acta Mathematica Sinica,English Series 1994年第2期10卷 113-120页

作者： Zhu Fuzu Department of mathematics East china normal university shanghai, 200062 china 1. Department of mathematics East China Normal University 200062 Shanghai China

For any natural numbers m and n≥17 we can construct explicitly indecomposable definite unimodular normal Hermitian lattices of rank n over the ring of algebraic integers Rm in an imaginary quadratic field (-m1/2). It is proved that for any n （in case m=11, there is one exception n=3） there exist indecomposable definite unimodular normal Hermitian R15(R11- lattices of rank n, and we exhibit representatives for each class. In the exceptional case there are no lattices with the desired properties. The method given in this paper can solve completely the problem of constructing indecomposable definite unimodular normal Hermitian Rm-lattices of any rank n for each m.

关键词： show On Indecomposable Definite Unimodular Hermitian Forms Math

Effects　of　Traffic　Lights　on　CA　Traffic　Model

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Communications in Nonlinear science and Numerical Simulation 1997年第2期2卷 14-18页

作者： Suwei FENG , Guoqing GU + & Shiqiang DAI++ (shanghai Institute of Applied mathematics and Mechanics, shanghai university, shanghai 200072) + (college of Systems science and Systems Engineering, university of shanghai for science and Technolo shanghai Inst. Appl. Math. Mechanics Shanghai University Shanghai 200072 China Coll. of Syst. Sci. and Syst. Eng. Univ. Shanghai for Sci. and Technol. Shanghai 200092 China

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ＥｆｅｃｔｓｏｆＴｒａｆｉｃＬｉｇｈｔｓｏｎＣＡＴｒａｆｉｃＭｏｄｅｌ１，２ＳｕｗｅｉＦＥＮＧ，ＧｕｏｑｉｎｇＧＵ＋＆ＳｈｉｑｉａｎｇＤＡＩ＋＋（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＡｐｐｌｉｅｄＭａｔｈｅｍａｔｉｃｓａｎｄＭｅｃｈａｎｉｃｓ，Ｓｈ...

关键词： cellular automata traffic model traffic light phase transition

CODIMENSION 3 BIFURCATIONS OFHOMOCLINIC ORBITS WITH ORBITFLIPS AND INCLINATION FLIPS

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Chinese Annals of mathematics,Series B 2004年第4期25卷 555-566页

作者： SHUISHULIANG ZHUDEMING collegeofmathematicsandPhysics ZhejiangNormalUniversityJinhua321004ZhejiangChina. Departmentofmathematics EastChinaNormalUniversityShanghai200062China.

The homoclinic bifurcations in four dimensional vector fields are investigated by setting up a local coordinates near the homoclinic orbit. This homoclinic orbit is nonprincipal in the meanings that its positive semi-orbit takes orbit flip and its unstable foliation takes inclination flip. The existence, nonexistence, uniqueness and coexistence of the 1-homoclinic orbit and the 1-periodic orbit are studied. The existence of the twofold periodic orbit and three-fold periodic orbit are also obtained.

关键词： Bifurcation Homoclinic orbit Orbit flip Inclination flip Periodic orbit

A uniformly valid series solution to the unsteady stagnation-point flow towards an impulsively stretching surface

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science china(Physics,Mechanics & Astronomy) 2010年第3期53卷 521-526页

作者： CHENG Jun & DAI ShiQiang shanghai Institute of Applied mathematics and Mechanics, shanghai university, shanghai 200072, china 1. shanghai Institute of Applied mathematics and Mechanics Shanghai University Shanghai 200072 China

The paper studies the problem of the unsteady two-dimensional stagnation-point flow of an incompressible viscous fluid over a flat deformable sheet. The flow is started impulsively from rest and the sheet is suddenly stretched in its own plane with a velocity proportional to the distance from the stagnation point. An analytical series solution is obtained by means of the homotopy analysis method (HAM). Also, the homotopy-Pade′ technique is employed. An explicit formula for the local friction coefficient is provided. The present formula, different from the perturbation solution, is accurate and uniformly valid for all dimensionless time in the whole spatial region and for all possible values of physical parameter λ, defined as the ratio of the potential flow velocity to the sheet sudden stretching velocity. Numerical tests are done to verify the present formula for its validity and accuracy.

关键词： unsteady boundary-layer flows stagnation point stretching sheet homotopy analysis method

FOURIER　PSEUDOSPECTRAL－FINITE　DIFFERENCE　METHOD　FOR　TWO－DIMENSIONAL　VORICITY　EQUATION

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Chinese Annals of mathematics,Series B 1994年第4期15卷 469-488页

作者： GUO BENYU XIONG YUESHAN(Department of mathematics,shanghai university of science and Technology f shanghai 201800,china.) Departmentofmathematics ShanghaiUniversityofScienceandTechnologyShanghai201800China

A Fourier pseudospectral-finite difference sheme is proposed for solving two-dimensionalvorticity equations. The generalized stability and the convergence are *** numericalresults are given.

关键词： Vorticity equation Fourier pseudospectral-finite difference method Generalized stability Convergence.