Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 2470 for “"potentials"”.
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Measurement of streaming potentials
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Metallurgy, 1960.
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Sigma Models with Repulsive Potentials
<p>Motivated by questions arising in the study of harmonic maps and Yang Mills theory, we study new techniques for producing optimal monotonicity relations for geometric partial differential equations. We apply these results to sharpen epsilon regularity results. As a sample application, we analyze …
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Schrödinger equation with periodic potentials.
The Schrödinger equation ... is considered. The solution of this equation is reduced to the problem of finding the eigenvectors of an infinite matrix. The infinite matrix is truncated to a finite matrix. The approximation due to the truncation is carefully studied. The band structure of the …
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Displacement Potentials for Anisotropic Media
Made available in DSpace on 2014-12-10T17:25:25Z (GMT). No. of bitstreams: 1 6500782.pdf: 1199597 bytes, checksum: eb9ee16bfdf2591be6e395c84c0d3947 (MD5) Previous issue date: 1964
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Data-driven linear interatomic potentials
… can be used to create computationally efficient potentials that approximate the potential energy surface for materials and molecules with first-principles accuracy while preserving its underlying symmetries. In addition, this thesis introduces an automated method for building training databases …
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Triton Wave Functions Using Realistic Potentials.
… among various so-called "realistic" potentials—two-body potentials which have been found to fit nucleon-nucleon scattering and deuteron data up to energies as high as 315 MeV,14 or can throw some light on the nature and magnitude of more complicated interactions involving more than …
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Database optimization algorithm for empirical potentials
The development for accurate and efficient empirical potential models requires years of efforts and is highly intuitional. This study provides an automated, quantitative algorithm to find the optimal empirical potential model for a pre-determined testing set of desired structure properties. We …
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Cortical Potentials Associated With Decision-Making
Made available in DSpace on 2014-12-10T21:07:40Z (GMT). No. of bitstreams: 1 7317633.pdf: 4728317 bytes, checksum: b88653b5597a3b2be1d17982e6494a07 (MD5) Previous issue date: 1973
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Ultracold fermionic atoms in disordered potentials
This thesis describes the construction of an experimental apparatus to study disorder physics using ultracold fermionic atomic gases. We use this apparatus to realize 3D Anderson localization for the first time for quantum matter waves. We provide the first measurement of how the mobility edge—a …
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Biomolecular Simulations with Machine Learning Potentials
… free energy benchmarks with modified MACE potentials. In the subsequent chapter, we further refine this approach by optimising the model hyperparameters and expanding the training data. We introduce an improved model, dubbed λ-MACE and study the accuracy and transferability of the …
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Measurements on contact potentials of metals
Thesis: M.S., Massachusetts Institute of Technology, Department of Physics, 1928
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Auxiliary field approach to effective potentials
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
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From Static Potentials to High-Energy Scattering
… for a unified description of static color dipole potentials, confining QCD strings, and hadronic high-energy reactions with special emphasis on saturation effects manifesting S-matrix unitarity at ultra-high energies. The model combines perturbative gluon exchange with the non-perturbative …
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Fitting Interatomic Potentials to Reproduce Phase Transitions
… number of atoms. These so called “interatomic potentials” take a variety of forms ranging from the simple Lennard-Jones potential to machine learning potentials. They are usually fitted for specific structures as well as pressure and temperature realms and do not necessarily reproduce the full …
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Urban waterfront : problems and potentials of Boston
… Boston's downtown waterfront. The problems and potentials of Boston's waterfront is analyzed first to form the basis for evaluating the existing and proposed development plans on the waterfront. The results of more than two decades of development activities have left Boston's waterfront short of …
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