检索结果-南通市图书馆

A LINE SEARCH FILTER SECANT METHOD FOR NONLINEAR EQUALITY CONSTRAINED OPTIMIZATION

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2010年第2期23卷 343-361页

作者： Zhujun WANG Detong ZHU Department of Mathematics Shanghai Normal University Shanghai 200234 China. Business College Shanghai Normal University Shanghai 200234 China.

This paper formulates and analyzes a line search method for general nonlinear equalityconstrained optimization based on filter methods for step acceptance and secant methods for *** feature of the new algorithm is that the secant algorithm is used to produce a searchdirection,a backtracking line search procedure is used to generate step size,some filtered rules areused to determine step acceptance,second order correction technique is used to reduce infeasibility andovercome the Maratos *** convergence properties of this method are analyzed:under mildassumptions it is showed that every limit point of the sequence of iterates generated by the algorithmis feasible,and that there exists at least one limit point that is a stationary point for the ***,it is also established that the Maratos effect can be overcome in our new approach by addingsecond order correction steps so that fast local superlinear convergence to a second order sufficient localsolution is ***,the results of numerical experiments are reported to show the effectivenessof the line search filter secant method.

关键词： Filter method nonlinear programming secant algorithm second order correction.

THE PROJECTIVE PLANE CROSSING NUMBERS OF CIRCULAR GRAPHS

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2008年第2期21卷 316-322页

作者： Dengju MA Han REN School of Science Nantong University Nantong 226007 China Department of Mathematics East China Normal University Shanghai 200062 China

The authors give an upper bound for the projective plane crossing number of a circular graph. Also, the authors prove the projective plane crossing numbers of circular graph C （8, 3） and C （9, 3） are 2 and 1, resp... 详细信息

关键词： Circular graph crossing number projective plane crossing number.

ON THE EXISTENCE OF FIXED POINTS FOR LIPSCHITZIAN SEMIGROUPS IN BANACH SPACES

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2001年第3期22卷 397-404页

作者： ZENG LUCHUAN, YANG YALI Department of Matematics, shanghai normal university, shanghai 20023{4. {{4.. Department of Mathematics Shanghai Normal Univeristy Shanghai 200234 China

Let C be a nonempty bounded subset of a p-uniformly convex Banach space X, and T = {T(t): t S} be a Lipschitzian semigroup on C with lim inf |||T(t)||| < Np, where Np is n→ t s the normal structure coefficient of X. ... 详细信息

Let C be a nonempty bounded subset of a p-uniformly convex Banach space X, and T = {T(t): t S} be a Lipschitzian semigroup on C with lim inf |||T(t)||| normal structure coefficient of X. Suppose also there exists a nonempty bounded closed convex subset E of C with the following properties: (P1)x: E implies ωω(χ) C E; (P2)T is asymptotically regular on E. The authors prove that there exists a z E such that T(s)z = z for all s S. Fruther, under the similar condition, the existence of fixed points of Lipschitzian semigroups in a uniformly convex Banach space is discussed.

关键词： Fixed points Lipschitzian semigroups Asymptotic regularity normal structure coefficient Asymptotic center

ON THE SPLITTINGS FOR RECTANGULAR SYSTEMS

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 1995年第4期13卷 337-342页

作者： H.J. Tian(Department of Mathematics, shanghai normal university, shanghai, {{4.) shanghai normal UNIV DEPT MATHSHANGHAIPEOPLES R CHINA

Recently, M. Hanke and M. Neumann([4.) have derived a necessary and sufficient condition on a splitting of A = U-V, which leads to a fixed point system, such that the iterative sequence converges to the least squares solution of minimum a-norm of the system Ax = b. In this paper, we give a necessary and sufficient condition on the splitting such that the iterative sequence converges to the weighted Moore-Penrose solution of the system Ax = b for every to is an element of C-n and every b is an element of C-m. We also provide a necessary and sufficient condition such that the iterative sequence is convergent for every to x(0) is an element of C-n.

关键词： AR Math ON THE SPLITTINGS FOR RECTANGULAR SYSTEMS

On Non-Decomposable Hermitian Forms over Gaussian Domain

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4期14卷 447-456页

作者： Zhu Fuzu, Department of Mathematics, east china normal university, shanghai 200062, china Department of Mathematics East China Normal University 200062 Shanghai China

Methods are presented for the construction of non-decomposable Hermitian forms over the ring of integers of an imaginary quadratic field.

关键词： Non-decomposable form Indecomposable form Odd form Even form Reduced form

Environment and cancer in shanghai

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 1989年第2期1卷 1-9页

作者： Fang Rukang Department of Environmental Science,east china normal university,shanghai,china

shanghai is the biggest industrial city in china, and the problem of environmental pollution is rather serious. This article, taking shanghai as an example, is to discuss: a general view of shanghai's environment; the present situation and characteristics of cancer in shanghai; analyses of the environmental factors of some kinds of cancers. The paper emphasizes the relationship between the environment and cancer in shanghai, especially the environmental pollution and cancer. The aim of the article is not only to call people's concern to the pollution , but also to study the causes of some cancers.

关键词： environment cancer shanghai water quality air pollution.

ON LOCAL STABILIZATION OF NONLINEAR CONTROL SYSTEMS

在线全文

学校读者我要写书评

暂无评论

Systems Science and Mathematical Sciences 1992年第4期5卷 289-298页

作者： ZHENG Yufan (Department of Mathematics,east china normal university,shanghai 200062,china)

Based on the notion of maximal absolute observability and its normalforms,a new method for studying the local stabilization for a kind of nonlinearcontrol systems is *** from the previous results given by Byrnes-Isitori and others,this new method can deal with more general systems,and hasmuch simpler way to prove the stabilization conditions and to design the feedbacklaws.

关键词： Nonlinear control absolute observability zero dynamics minimumphase

An improved approach to the efficient construction of and search operations in motion graphs

在线全文

学校读者我要写书评

暂无评论

Science china(Information Sciences) 2012年第5期55卷 1042-1051页

作者： GAO Yan 1,CHEN ZhiHua 2,CHEN MinGang 3 & SHEN Yang 3 1 Software Engineering Institute,east china normal university,shanghai 200062,china 2 Department of Computer Science and Engineering,east china university of Science and Technology,shanghai 200237,china 3 Department of Computer Science and Engineering,shanghai Jiao Tong university,shanghai 20024.,china 1. Software Engineering Institute East China Normal University Shanghai 200062 China2. Department of Computer Science and Engineering East China University of Science and Technology Shanghai 200237 China3. Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

Motion graphs have been widely used as an effective technique in the synthesis of human *** synthesize well-formed motions,motion graphs require smooth transitions and good ***,the time and costs grow quadratically as the graph size *** this paper,we present a method to set up a hierarchical structure,called a structure *** coarse level of this graph models different motion categories and their transitions,and the fine level mainly captures different motion *** interpolation space method is used to improve the graph connectivity at the fine *** structure guides the establishment of a faster and more realistic graphical *** the building process,this structure also helps with searching the motion graph,by performing a traverse search and placing the findings into a direct look-up table or local search ***,when there is no direct link between the different motions,a navigation map is introduced to conduct an appropriate search path via a series of transition motion *** experimental results indicate that our approach could lower the computation time in construction and searching,while simultaneously providing a richer variety of motion styles.

关键词： motion graph structure table registration curve motion interpolation

Variation of peroxidase isoenzyme and biofilm of Phanerochaete chrysosporium in continuous membrane bioreactor for Reactive Brilliant Red X3-B treatment

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2009年第7期21卷 940-947页

作者： GAO Shang, CHEN Cheng, TAO Fang, HUANG Minsheng, MA Lihua, WANG Zhonghua, WU Linhui School of Resource and Environment Science, east china normal university, shanghai 200062, china. [a]School of Resource and Environment Science East China Normal University Shanghai 200062 China

The influence of a Reactive Brilliant Red X-3B （RBR X-3B） dye on the peroxidase isoenzyme ofPhanerochaete chrysosporium was determined, and the biofilm structure in a white rot fungal continuous membrane bioreactor （MBR） was also investigated by scanning electron microscope （SEM）. The variation of peroxidase isoenzyme and the decolorization rate in the continuous MBR were evaluated. The results showed that the 100 mg/L RBR X-3B could stimulate the production of the peroxidase isoenzyme in the shaking-flask culture. In addition, two new peroxidase isoenzyme bands with relative mobility （Rf） value of 0.27 and 0.28 appeared, but the activity was lower than the blank control of 11 d. In the continuous MBR, the system worked stably during the first 60 d, the main peroxidase isoenzyme bands existed and three new bands with Rf value of 0.10, 0.27, and 0.28 appeared. Meanwhile, the biofilm grew well and the average decolorization rate could reach 90.6%. But the bands of peroxidase isoenzyme decreased rapidly at day 65, only two bands with Rf value 0.24.and 0.26 existed, and the decolorization rate decreased to 78.3%. Therefore, 5 bottles of P. chrysosporium mycelial pellet were added into the MBR, and then the activity of the peroxidase isoenzyme and the decolorization rate had a slight recovery. Finally, the decolorization rate finally decreased to 75.2%. These results contribute to a comprehensive understanding of the variation of peroxidase isoenzyme and biofilm in continuous MBR by white rot fungi.

关键词： Phanerochaete chrysosporium continuous membrane bioreactor Reactive Brilliant Red X3-B peroxidase isoenzyme pattern