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检索条件"机构=Program in Appl. & Comput. Math."
65 条 记 录,以下是51-60 订阅
排序:
LAGRANGIAN PRESYMPLECTIC CONSTRAINT ANALYSIS OF MECHANICAL MODELS OF FIELD-THEORIES COUPLED TO EXTERNAL FIELDS
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JOURNAL OF PHYSICS A-math.MATICAL AND GENERAL 1992年 第16期25卷 4443-4457页
作者: COX, W Dept. of Comput. Sci. & Appl. Math. Aston Univ. Birmingham UK
The Lecanda-Roman-Roy geometric constraint algorithm for presymplectic Lagrangian systems is appl.ed to a mechanical model of singular field theories coupled to time independent external fields. The simple, yet intrin...
来源: 评论
SPACE MARCHING DIFFERENCE-SCHEMES IN THE NONLINEAR INVERSE HEAT-CONDUCTION PROBLEM
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INVERSE PROBLEMS 1992年 第1期8卷 25-43页
作者: CARASSO, AS Comput. & Appl. Math. Lab. Nat. Inst. of Stand. & Technol. Gaithersburg MD USA
For ill-posed initial value problems, step by step marching comput.tions are unconditionally unstable, and necessarily blow-up numerically as the mesh is refined. However, for the 1D nonlinear inverse heat conduction ...
来源: 评论
Modeling human visual object recognition
Modeling human visual object recognition
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International Joint Conference on Neural Networks (IJCNN)
作者: S. Edelman H.H. Bulthoff Department of Applied Mathematics and Computer Science Weizmann Institute of Science Rehovot Israel Dept. of Appl. Math. & Comput. Sci. Weizmann Inst. of Sci. Rehovot Israel
The topics discussed here are network models of object recognition; a comput.tional theory of recognition; psychophysical support for a view-interpolation model: and an open issue, features of recognition. The authors... 详细信息
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EXACT-SOLUTIONS FOR A CHARGED-PARTICLE IN A UNIFORM ELECTRIC-FIELD WITH ALTERNATING SITE ENERGIES - PERTURBATION-THEORY
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JOURNAL OF PHYSICS-CONDENSED MATTER 1991年 第32期3卷 6021-6032页
作者: ZHAO, XG Inst. of Appl. Phys. & Comput. Math. Beijing China
The energy spectrum and the eigenvectors of a charged particle in a uniform electric field with alternating site energies are studied for infinite systems. For the case of large energy mismatch, exact solutions are pr...
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Deterministic control of uncertain systems
Deterministic control of uncertain systems
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IEE Colloquium on Real Control Problems - No Solutions Yet?
作者: A. Zinober Dept. of Appl. & Comput. Math. Sheffield Univ. UK
In direct contrast to adaptive controllers the deterministic control of uncertain time-varying systems control is achieved using fixed nonlinear feedback control functions, which operate effectively over a specified m... 详细信息
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Activity level of a neural net and its learning environment
Activity level of a neural net and its learning environment
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International Joint Conference on Neural Networks (IJCNN)
作者: K. Liu J.E. Jones Y. Chen Dept. of Appl. Math. & Comput. Sci. Colorado Sch. of Mines Golden CO USA
Summary form only given, as follows. When a neural net is used to solve continuous problems, the learning environment, which may influence convergence and accuracy, differs from that for true-false problems. Based on ... 详细信息
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KILLING VECTORS IN CONFORMALLY FLAT PERFECT FLUID SPACETIMES
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CLASSICAL AND QUANTUM GRAVITY 1990年 第10期7卷 1721-1731页
作者: BARNES, A ROWLINGSON, RR Dept. of Comput. Sci. & Appl. Math. Aston Univ. Birmingham UK
The existence of Killing vectors in conformally flat perfect fluid spacetimes in general relativity is considered. In particular Killing vectors which are neither orthogonal nor parallel to the fluid velocity vector a...
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ELECTRON-TRANSPORT MODELS WITH DIFFUSION GRADIENT AND ELECTRIC-FIELD, USING THE MAXIMUM ANISOTROPIC APPROXIMATION
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JOURNAL OF PHYSICS-CONDENSED MATTER 1990年 第22期2卷 4849-4857页
作者: COX, W Dept. of Comput. Sci. & Appl. Math. Aston Univ. Birmingham UK
The maximum anisotropic approximation for electron transport in an electric field is extended to the position-dependent case. Models utilising nonpolar optical, acoustic and piezoelectric phonon scattering processes a...
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IRROTATIONAL PERFECT FLUIDS WITH A PURELY ELECTRIC WEYL TENSOR
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CLASSICAL AND QUANTUM GRAVITY 1989年 第7期6卷 949-960页
作者: BARNES, A ROWLINGSON, RR Dept. of Comput. Sci. & Appl. Math. Aston Univ. Birmingham UK
All perfect fluid spacetimes with a purely electric Weyl tensor are shown to have an alignment between the fluid 4-velocity and a canonical null tetrad determined by the Weyl tensor. If, in addition, it is assumed tha...
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THERMAL-SHOCK STRUCTURE IN SUPERFLUID-HELIUM
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JOURNAL OF PHYSICS C-SOLID STATE PHYSICS 1987年 第13期20卷 1937-1946页
作者: ATKIN, RJ FOX, N Dept. of Appl. & Comput. Math. Sheffield Univ. UK
The speed of a second-sound wave in liquid helium II is known to depend on amplitude, and thermal shocks may form. Prediction of the shock velocity depends on which conservation laws hold across the discontinuity. Whe... 详细信息
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