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Articles 91 - 120 of 541
Full-Text Articles in Mathematics
Constructing Subdivision Rules From Rational Maps, J. W. Cannon, W. J. Floyd, W. R. Parry
Constructing Subdivision Rules From Rational Maps, J. W. Cannon, W. J. Floyd, W. R. Parry
Faculty Publications
This paper deepens the connections between critically finite rational maps and finite subdivision rules. The main theorem is that if f is a critically finite rational map with no periodic critical points, then for any sufficiently large integer n the iterate f is the subdivision map of a finite subdivision rule. This enables one to give essentially combinatorial models for the dynamics of such iterates.
The Barycenter Of The Numerical Range Of A Matrix, Sean A. Broughton, Roger G. Lautzenheiser, Thomas Werne
The Barycenter Of The Numerical Range Of A Matrix, Sean A. Broughton, Roger G. Lautzenheiser, Thomas Werne
Mathematical Sciences Technical Reports (MSTR)
The numerical range W(A) of an nxn matrix A is the totality of the scalar products <Ax,x> as x varies over all unit vectors in Cn The barycenter (center of mass) of the numerical range is defined geometrically as the center of mass of W(A) considered as a planar lamina with variable density and also as a limit of sample averages (<Ax1,x1>+...+<AxN,xN>)/N. Under a wide range the sampling schemes it is shown that the barycenter is the average of the spectrum …
Analysis Of The China Factor Effect On The International Dry Bulk Shipping Market, Xiaoxiao Bi
Analysis Of The China Factor Effect On The International Dry Bulk Shipping Market, Xiaoxiao Bi
World Maritime University Dissertations
No abstract provided.
Countermeasures For The Chemicals Transportation Of The Zhangjiagang Port, Qiangqiang Miao
Countermeasures For The Chemicals Transportation Of The Zhangjiagang Port, Qiangqiang Miao
World Maritime University Dissertations
No abstract provided.
The Study On The Vessel Size Of Container Transport In The Yangtze River, Chenchen Peng
The Study On The Vessel Size Of Container Transport In The Yangtze River, Chenchen Peng
World Maritime University Dissertations
No abstract provided.
Research And Analysis On The Competence Of China’S Chemical Shipping Enterprise, Huan Yu
Research And Analysis On The Competence Of China’S Chemical Shipping Enterprise, Huan Yu
World Maritime University Dissertations
No abstract provided.
The Analysis And Forecast Of Cargo Throughput In Inland Waterway Port Of Baoshan District, Shanghai, Xiang Gu
The Analysis And Forecast Of Cargo Throughput In Inland Waterway Port Of Baoshan District, Shanghai, Xiang Gu
World Maritime University Dissertations
No abstract provided.
A Contrastive Analysis On Logistics Costs Between China And Some Developed Countries, Xuanxuan Wu
A Contrastive Analysis On Logistics Costs Between China And Some Developed Countries, Xuanxuan Wu
World Maritime University Dissertations
No abstract provided.
The Study On The Empty Container Repositioning Of Container Leasing Company, Yi Zhao
The Study On The Empty Container Repositioning Of Container Leasing Company, Yi Zhao
World Maritime University Dissertations
No abstract provided.
The Analysis Of The Bullwhip Effect In Chinese Medicine Supply Chain, Haiming Zhu
The Analysis Of The Bullwhip Effect In Chinese Medicine Supply Chain, Haiming Zhu
World Maritime University Dissertations
No abstract provided.
New Integrable Hierarchy, Its Parametric Solutions, Cuspons, One-Peak Solitons, And M/W-Shape Peak Solitons, Zhijun Qiao
New Integrable Hierarchy, Its Parametric Solutions, Cuspons, One-Peak Solitons, And M/W-Shape Peak Solitons, Zhijun Qiao
School of Mathematical & Statistical Sciences Faculty Publications
In this paper, we propose a new completely integrable hierarchy. Particularly in the hierarchy we draw two new soliton equations: 1 mt= 1 2 1/m2xxx− 1 2 1/m2 x; 2 mt+mx u2−ux 2+2m2ux=0, m=u−uxx. The first one is the second positive member in the hierarchy while the second one is the second negative member in the hierarchy. Both equations can be derived from the two-dimensional Euler equation by using the approximation procedure. All equations in the hierarchy are proven to have bi-Hamiltonian operators and Lax pairs through solving a crucial matrix equation. Moreover, we develop parametric solutions of the entire …
Optimization And Feedback Design Of State-Constrained Parabolic Systems, Boris S. Mordukhovich
Optimization And Feedback Design Of State-Constrained Parabolic Systems, Boris S. Mordukhovich
Mathematics Research Reports
The paper is devoted to optimal control and feedback design of stateconstrained parabolic systems in uncertainty conditions. Problems of this type are among the most challenging and difficult in dynamic optimization for any kind of dynamical systems. We pay the main attention to considering linear multidimensional parabolic'systems with Dirichlet boundary controls and pointwise state constraints, while the methods developed in this study are applicable to other kinds of boundary controls and dynamical systems of the parabolic type. The feedback design problem is formulated in the minimax sense to ensure stabilization of transients within the prescribed diapason and robust stability of …
A Fixed Point Theorem For The Infinite-Dimensional Simplex, Douglas Rizzolo '08, Francis E. Su
A Fixed Point Theorem For The Infinite-Dimensional Simplex, Douglas Rizzolo '08, Francis E. Su
All HMC Faculty Publications and Research
We define the infinite-dimensional simplex to be the closure of the convex hull of the standard basis vectors in R∞, and prove that this space has the fixed point property: any continuous function from the space into itself has a fixed point. Our proof is constructive, in the sense that it can be used to find an approximate fixed point; the proof relies on elementary analysis and Sperner's lemma. The fixed point theorem is shown to imply Schauder's fixed point theorem on infinite-dimensional compact convex subsets of normed spaces.
A New Framework For Grading, Kris H. Green, W. Allen Emerson
A New Framework For Grading, Kris H. Green, W. Allen Emerson
Mathematical and Computing Sciences Faculty/Staff Publications
Grading is one of the least liked, least understood and least considered aspects of teaching. After years of work, we have developed a grading system that is quite different from traditional and reformed approaches to grading and which meaningfully incorporates and integrates the collection of evidence, the evaluation of evidence, and the reporting of judgments about that evidence. This system satisfies the requirements of good grading system and answers many of the problems faced by more traditional methods by substantially changing the way in which grade information is aggregated, resulting in a final course grade that aligns qualitative evaluation with …
Infinitely Many Radial Solutions For A Sub-Super Critical Dirichlet Boundary Value Problem In A Ball, Alfonso Castro, John Kwon, Chee Meng Tan '07
Infinitely Many Radial Solutions For A Sub-Super Critical Dirichlet Boundary Value Problem In A Ball, Alfonso Castro, John Kwon, Chee Meng Tan '07
All HMC Faculty Publications and Research
We prove the existence of infinitely many solutions to a semilinear Dirichlet boundary value problem in a ball for a nonlinearity g(u) that grows subcritically for u positive and supercritically for u negative.
Qualitative Behavior Of Dynamical Vector Fields, Roger Dale Kirby
Qualitative Behavior Of Dynamical Vector Fields, Roger Dale Kirby
Mathematics Dissertations - Archive
Differential Equations come in two classes, deterministic and stochastic. The first part of this analysis establishes the stable properties of the set of all trajectories converging on a critical point in the real plane defined by two distinct negative eigenvalues. Also in the deterministic class I offer a method for finding closed-form primitives for a great variety of differential forms, through a reduction process facilitated by a Lyapunov-type Energy function. Many of these forms lie in classes which heretofore have not been shown to be solvable in closed form. The last part of this work outlines the appropriate procedures for …
Local Approximations For Branching Particle Systems, Vladimir Vinogradov
Local Approximations For Branching Particle Systems, Vladimir Vinogradov
Communications on Stochastic Analysis
No abstract provided.
Newton's Method Obeys Benford's Law, Arno Berger, Theodore P. Hill
Newton's Method Obeys Benford's Law, Arno Berger, Theodore P. Hill
Research Scholars in Residence
No abstract provided.
Space Regularity Of Stochastic Heat Equations Driven By Irregular Gaussian Processes, Oana Mocioalca, Frederi Viens
Space Regularity Of Stochastic Heat Equations Driven By Irregular Gaussian Processes, Oana Mocioalca, Frederi Viens
Communications on Stochastic Analysis
No abstract provided.
Generators Of Dynamical Systems On Hilbert Modules, Gholamreza Abbaspour Tabadkan, Michael Skeide
Generators Of Dynamical Systems On Hilbert Modules, Gholamreza Abbaspour Tabadkan, Michael Skeide
Communications on Stochastic Analysis
No abstract provided.
Quantum Stochastic Process Associated With Quantum Lévy Laplacian, Un Cig Ji, Habib Ouerdiane, Kimiaki Saitô
Quantum Stochastic Process Associated With Quantum Lévy Laplacian, Un Cig Ji, Habib Ouerdiane, Kimiaki Saitô
Communications on Stochastic Analysis
No abstract provided.
Markov Semigroups And Groups Of Operators, Jerome A Goldstein, Rosa Maria Mininni, Silvia Romanelli
Markov Semigroups And Groups Of Operators, Jerome A Goldstein, Rosa Maria Mininni, Silvia Romanelli
Communications on Stochastic Analysis
No abstract provided.
Convex Comparison Inequalities For Exponential Jump-Diffusion Processes, Jean-Christophe Breton, Nicolas Privault
Convex Comparison Inequalities For Exponential Jump-Diffusion Processes, Jean-Christophe Breton, Nicolas Privault
Communications on Stochastic Analysis
No abstract provided.
Martingale Representation For Contingent Claims With Regime Switching, Robert J Elliott, Tak Kuen Siu, Hailiang Yang
Martingale Representation For Contingent Claims With Regime Switching, Robert J Elliott, Tak Kuen Siu, Hailiang Yang
Communications on Stochastic Analysis
No abstract provided.
White Noise Approach To The Itô Formula For The Stochastic Heat Equation, Alberto Lanconelli
White Noise Approach To The Itô Formula For The Stochastic Heat Equation, Alberto Lanconelli
Communications on Stochastic Analysis
No abstract provided.
Quantum Stochastic Calculus On Interacting Fock Spaces: Semimartingale Estimates And Stochastic Integral, Vitonofrio Crismale
Quantum Stochastic Calculus On Interacting Fock Spaces: Semimartingale Estimates And Stochastic Integral, Vitonofrio Crismale
Communications on Stochastic Analysis
No abstract provided.
Parameter Estimation For Ornstein-Uhlenbeck Processes Driven By Α-Stable Lévy Motions, Yaozhong Hu, Hongwei Long
Parameter Estimation For Ornstein-Uhlenbeck Processes Driven By Α-Stable Lévy Motions, Yaozhong Hu, Hongwei Long
Communications on Stochastic Analysis
No abstract provided.
Betti Numbers And Degree Bounds For Some Linked Zero-Schemes, Leah Gold, Hal Schenck, Hema Srinivasan
Betti Numbers And Degree Bounds For Some Linked Zero-Schemes, Leah Gold, Hal Schenck, Hema Srinivasan
Mathematics and Statistics Faculty Publications
In [J. Herzog, H. Srinivasan, Bounds for multiplicities, Trans. Amer. Math. Soc. 350 (1998) 2879–2902], Herzog and Srinivasan study the relationship between the graded Betti numbers of a homogeneous ideal II in a polynomial ring RR and the degree of II. For certain classes of ideals, they prove a bound on the degree in terms of the largest and smallest Betti numbers, generalizing results of Huneke and Miller in [C. Huneke, M. Miller, A note on the multiplicity of Cohen–Macaulay algebras with pure resolutions, Canad. J. Math. 37 (1985) 1149–1162]. The bound is conjectured to hold in general; we study …
Transient And Periodic Solution To The Time-Inhomogeneous Quasi-Birth Death Process, Barbara Haas Margolius
Transient And Periodic Solution To The Time-Inhomogeneous Quasi-Birth Death Process, Barbara Haas Margolius
Mathematics and Statistics Faculty Publications
We derive the transient distribution and periodic family of asymptotic distributions and the transient and periodic moments for the quasi-birth-and-death processes with time-varying periodic rates. The distributions and moments are given in terms of integral equations involving the related random-walk process. The method is a straight-forward application of generating functions.
Decompositions Of Signed-Graphic Matroids, Dan Slilaty, Hongxun Qin
Decompositions Of Signed-Graphic Matroids, Dan Slilaty, Hongxun Qin
Mathematics and Statistics Faculty Publications
We give a decomposition theorem for signed graphs whose frame matroids are binary and a decomposition theorem for signed graphs whose frame matroids are quaternary.