检索结果-南通市图书馆

Study on Green Residential Space Design

在线全文

学校读者我要写书评

暂无评论

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

Estimates for eigenvalues of Laplacian operator with any order

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science china mathematics 2007年第8期50卷 1078-1086页

作者： Fa-en WU~(1+) Lin-fen CAO~2 1 Department of mathematics,Beijing Jiaotong university,Beijing 10004.,china 2 Department of mathematics,{4. normal university,xinxiang 4.3007,china Department of mathematics Beijing Jiaotong University Beijing 100044 China Department of mathematics Henan Normal University Xinxiang 453007 China

Let D be a bounded domain in an n-dimensional Euclidean space ? n . Assume that $$0 < \lambda _1 \leqslant \lambda _2 \leqslant \cdots \leqslant \lambda _k \leqslant \cdots $$ are the eigenvalues of the Dirichlet Lapl... 详细信息

Let D be a bounded domain in an n-dimensional Euclidean space ? n . Assume that $$0 4.(n + 2l - 2)]^{\tfrac{1}{2}} \left\{ {\sum\limits_{i = 1}^k {(\lambda _{(k + 1)} - \lambda _i )^{\tfrac{1}{2}} \lambda _i^{\tfrac{{l - 1}}{l}} \sum\limits_{i = 1}^k {(\lambda _{(k + 1)} - \lambda _i )^{\tfrac{1}{2}} \lambda _i^{\tfrac{1}{l}} } } } \right\}^{\tfrac{1}{2}} $$ . This ineguality is independent of the domain D. Furthermore, for any l ? 3 the above inequality is better than all the known results. Our rusults are the natural generalization of inequalities corresponding to the case l = 2 considered by Qing-Ming Cheng and Hong-Cang Yang. When l = 1, our inequalities imply a weaker form of Yang inequalities. We aslo reprove an implication claimed by Cheng and Yang.

关键词： Dirichlet problem eigenvalue estimate Laplacian operator 35P15 58G25

Some Uniqueness Results for a Class of Quasilinear Elliptic Eigenvalue Problems

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1998年第2期14卷 245-260页

作者： Guo Zongming Yang Zuodong (Department of mathematics,henan normal university,{4. 4.3002,china) Department of mathematics Henan Normal University 453002 Xinxiang China

Existence and uniqueness results are obtained for positive radial solutions of a class of quasilinear elliptic equations in a N-ball or an annulus without monotone assumptions on the nonlinear term *** is also proved ... 详细信息

关键词： Quasilinear elliptic eigenvalue problems Positive radial solutions Uniqueness

AN　EXISTENCE　THEOREM　FOR　RADIAL　POSITIVE　SOLUTIONS　OF　NONLINEAR　DEGENERATE　ELLIPTIC　EQUATIONS

在线全文

学校读者我要写书评

暂无评论

Systems Science and Mathematical Sciences 1994年第4期7卷 289-292页

作者： LIU Hailiang(Department of mathematics, henan normal university, xinxiang4.3002,{4.) 河南师范大学数学系河南新乡 453002

ＡＮＥＸＩＳＴＥＮＣＥＴＨＥＯＲＥＭＦＯＲＲＡＤＩＡＬＰＯＳＩＴＩＶＥＳＯＬＵＴＩＯＮＳＯＦＮＯＮＬＩＮＥＡＲＤＥＧＥＮＥＲＡＴＥＥＬＬＩＰＴＩＣＥＱＵＡＴＩＯＮＳＬＩＵＨａｉｌｉａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａ... 详细信息

ＡＮＥＸＩＳＴＥＮＣＥＴＨＥＯＲＥＭＦＯＲＲＡＤＩＡＬＰＯＳＩＴＩＶＥＳＯＬＵＴＩＯＮＳＯＦＮＯＮＬＩＮＥＡＲＤＥＧＥＮＥＲＡＴＥＥＬＬＩＰＴＩＣＥＱＵＡＴＩＯＮＳＬＩＵＨａｉｌｉａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＨｅｎａｎＮｏ...

关键词： Existence radial solution degenerate equation

Effects of Ca￣（2＋）ions antagonistic to Al￣（3＋）ions poisoning in root growth，cell division and nucleolus in root tip cells of Allium cepa

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 1995年第2期7卷 190-197页

作者： Liu Donghua Jiang Wusheng (Department of Biology, Tianjin normal university, TianJin 300074., china)Li Kunzhang (Departrnent of Biology, henan normal university,{4. , china)

ＥｆｆｅｃｔｓｏｆＣａ￣（２＋）ｉｏｎｓａｎｔａｇｏｎｉｓｔｉｃｔｏＡｌ￣（３＋）ｉｏｎｓｐｏｉｓｏｎｉｎｇｉｎｒｏｏｔｇｒｏｗｔｈ，ｃｅｌｌｄｉｖｉｓｉｏｎａｎｄｎｕｃｌｅｏｌｕｓｉｎｒｏｏｔｔｉｐｃｅｌｌｓｏｆＡ... 详细信息

ＥｆｆｅｃｔｓｏｆＣａ￣（２＋）ｉｏｎｓａｎｔａｇｏｎｉｓｔｉｃｔｏＡｌ￣（３＋）ｉｏｎｓｐｏｉｓｏｎｉｎｇｉｎｒｏｏｔｇｒｏｗｔｈ，ｃｅｌｌｄｉｖｉｓｉｏｎａｎｄｎｕｃｌｅｏｌｕｓｉｎｒｏｏｔｔｉｐｃｅｌｌｓｏｆＡｌｌｉｕｍｃｅｐａＬｉｕＤｏｎｇｈ...

关键词： Allium cepa antagonism aluminium chloride chromosorne aberration nucleolus decompo- sition.

Explicit Representations of Mimmal Immersions of 2-Spheres into S^(2m)

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1997年第2期13卷 175-186页

作者： Li Xingxiao (Department of mathematics,henan normal university,{4. 4.3002,china)Li Anmin (Department of mathematics,Sichuan university,Chengdu 610064.china)

For all minimal immersions of the 2-sphere S2 into the unit 2m-sphere S2mwith area 2π[m（m+1）+2],we are able to give an explicit representation by some real *** representation is rather important in the study of minimal 2-spheres in S2mbecause the parameters concerned are independent of each *** examples are given and a classification theorem is also obtained.

关键词： Minimal immersion Holomorphic curve Directrix

ON MATRIX UNITARILY INVARIANT NORM CONDITION NUMBER

在线全文

学校读者我要写书评

暂无评论

Journal of Computational mathematics 1998年第2期16卷 121-128页

作者： Dao-sheng Zheng (Department of mathematics, East china normal university, Shanghai 200062, china) E china normal Univ Dept Math Shanghai 200062 Peoples R China

In this paper, the unitarily invariant norm \\.\\ on C-mxn is used. We first discuss the problem under what case, a rectangular matrix A has minimum condition number K(A) = \\A\\ \\A(+)\\, where A(+) designates the Moore-Penrose inverse of A; and under what condition, a square matrix A has minimum condition number for its eigenproblem? Then we consider the second problem, i.e., optimum of K(A) = \\A\\ \\A(-1)\\(2) in error estimation.

关键词： matrix unitarily invariant norm condition number

Functional central limit theorem for super α-stable processes

在线全文

学校读者我要写书评

暂无评论

Science china mathematics 2004年第6期47卷 874-881页

作者： HONG WenmingDepartment of mathematics, Beijing normal university, Beijing 100875, china 1. Department of mathematics Beijing Normal University 100875 Beijing China

A functional central limit theorem is proved for the centered occupation time process of the super α-stable processes in the finite dimensional distribution sense. For the intermediate dimensions α < d < 2α (0 < α ≤ 2), the limiting process is a Gaussian process, whose covariance is specified; for the critical dimension d= 2α and higher dimensions d < 2α, the limiting process is Brownian motion.

关键词： super α-stable processes occupation time central limit theorem evolution equation

Extremal problems on the Hua domain of the first type

在线全文

学校读者我要写书评

暂无评论

Science china mathematics 2005年第z1期48卷 343-354页

作者： SU Jianbing & YIN Weiping mathematics Department, Xuzhou normal university, Xuzhou 221116, china mathematics Department, Capital normal university, Beijing 100037, china 1. mathematics Department Xuzhou Normal University 221116 Xuzhou China 2. mathematics Department Capital Normal University 100037 Beijing China

In this paper we study some extremal problems between the Hua domain of the first type and the unit ball.

关键词： extremal problem, Hua domain of the first type, minimal circumscribed Hermitian ellipsoid.