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Showing 1 to 20 of 453 for “"Piecewise"”.
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Anisotropic piecewise linear approximation
… of a function f on a domain C Rd, d 2, by piecewise linear functions, and the derivation of errors estimations in Lp-norm and W1 p - seminorm. In the two-dimensional setting, we develop a construction of a sequence of anisotropic triangulations, where the approximation provided by the …
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Piecewise Linear Control Systems
This thesis treats analysis and design of piecewise linear control systems. Piecewise linear systems capture many of the most common nonlinearities in engineering systems, and they can also be used for approximation of other nonlinear systems. Several aspects of linear systems with quadratic …
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Piecewise truckload network procurement
Faced with procuring transportation over its freight network, a shipper can either bid out all of its lanes at once, or somehow divide up the network and bid it out in pieces. For large shippers, practical concerns such as attendant manpower requirements and exposure to financial/operational risks …
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Piecewise smooth systems and monotonicity.
In this thesis we study piecewise smooth and switched positive systems and investigate the monotonicity properties of such systems. We describe many examples of such systems, particulary drawing from the mathematical biology literature, in order to motivate the work in later chapters. We describe …
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Construction of Piecewise Linear Wavelets.
… by using semi-wavelets. Second, we construct piecewise linear wavelets with smaller support over type-2 triangulations. Then, parameterized wavelets are constructed using the orthogonality conditions.</p>
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Pl (piecewise-Linear) Local-Homotopy
Made available in DSpace on 2014-12-11T18:24:11Z (GMT). No. of bitstreams: 1 7500335.pdf: 3653658 bytes, checksum: aaf3ac000161dcc35d4e334641f76f89 (MD5) Previous issue date: 1974
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Optimally Navigating a Piecewise-deterministic World
… various problems arising in optimal control of piecewise-deterministic Markov processes (PDMPs), with an emphasis on path planning problems where a randomly switching mode impacts the dynamics and optimization objective. We introduce two application-driven modeling frameworks, each formulated as …
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Einstein metrics on piecewise-linear three-spheres
1 PDF file (viii, 31 pages)
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Conjugacy Classes of the Piecewise Linear Group
The piecewise linear group is the set of all piecewise linear orientation preserving homeomorphisms from the interval to itself under the operation of composition. We present here a complete set of invariants to classify the conjugacy classes of this group. Our approach to this problem relies on …
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Time integration schemes for piecewise linear plasticity
… A backward difference return algorithm for piecewise linear yield surfaces is then formulated, with attention restricted to an associated flow rule and isotropic material behavior. Both the Tresca and Mohr-Coulomb yield surfaces with perfectly plastic and linear hardening rules are …
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Adaptive Control of Systems Containing Piecewise Linear Nonlinearities
… control theory applicable to systems with piecewise linear nonlinearities. In contrast to most of adaptive nonlinear control, our result is applicable to the physically important asymmetric slope and deadzone nonlinearities.
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Efficient data structures for piecewise-smooth video processing
… object manipulation and special effects, rely on piecewise-smooth functions computed from the input data. In this thesis, we present two computationally efficient data structures for representing piecewise-smooth visual information and demonstrate how they can dramatically simplify and accelerate …
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Piecewise Bézier curve trajectory generation and control for quadrotors
… as an optimization problem that generates piecewise Bézier curves which minimize snap over the complete trajectory. The optimization method generates these trajectories from collision-free waypoints indicative of the constrained environment. Further, the Bézier curves are time parameterized …
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Mollified piecewise polynomial approximants of arbitrary order and smoothness
… that convolution or mollification regularises piecewise functions with improved differentiability based on the continuity of the mollifier. Therefore convolution is suitable to generating smooth basis functions that reproduce global polynomial and is easy to construct on polytopic cells. We …
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Diagonalization of 1-D Schrodinger Operators with Piecewise Constant Potentials
… We will modify this variable so that it is piecewise constant. The specific operator in this equation also makes current time-stepping methods not practical. The method used here will apply an eigenfunction expansion technique used in previous research that eliminates the current …
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Dynamics of Symplectic Piecewise Affine Elliptic Rotation Maps on Tori
… investigate the iterative dynamics of symplectic piecewise-affine elliptic rotation maps associated with matrices with non-integer entries, 0-11a , where -2 < a < 2. We explain how their singularity and periodicity structures develop in general. In a special case, a = +/- 2 , we completely …
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Polygonal random fields and the reconstruction of piecewise continuous functions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Scale independent piecewise smooth segmentation of images via variational methods
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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