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 8 of 8 for “"Generalized Harmonic"”.
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Calculo de esfuerzos en placas planas sometidas a flujo turbulento
… system. The method of solution makes use of the generalized harmonic analysis and series expansions in terms of the set of orthogonal functions associated with the normal modes of vibration of the system. 0n the basis of experimental data of Aupperle and Lambert and of the generalized theory, …
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NONLINEAR DYNAMICS OF CABLE GALLOPING VIA A TWO-DEGREE-OF-FREEDOM NONLINEAR OSCILLATOR
… steady and unsteady flows are discussed from the generalized harmonic balance method. The analytical solutions for stable and unstable periodic motions in such a two degree-of-freedom system are achieved, and the corresponding stability and bifurcation was discussed. The limit cycle for the linear …
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Numerical Simulations Of Black Hole Binaries: Second Order Spectral Methods
… of the second order Einstein equations in generalized harmonic form are also explored. Numerical results for multi-domain second order scalar wave and single black hole evolutions demonstrate stability and convergence . The application of the new techniques to the evolution of a 16 orbit, …
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Finite difference methods for 1st Order in time, 2nd order in space, hyperbolic systems used in numerical relativity
… equations, such as ADM, BSSN, NOR, and the generalized harmonic formulation. For IVP, the stability method proposed in [14] is extended from second and fourth order centered schemes, to 2n-order accuracy, including also the case when some first order derivatives are approximated with …
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Two-parameter noncommutative Gaussian processes
… is modeled on the two-parameter families of generalized harmonic oscillators found in physics and the presently introduced framework may be viewed as a two-parameter deformation of classical probability. Specifically, we introduce (1) a generalized Non-commutative Central Limit Theorem giving …
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An investigation of vibration isolation systems using active, semi-active and tunable passive mechanisms, with applications to vehicle suspensions
… 'on-off' vibration control systems. A generalized harmonic linearization technique, based on a principle of energy similarity of dynamic elements, is proposed to derive equivalent linear representations of both nonlinear damping and spring elements, in the frequency domain. An analysis …
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PERFECT FLUIDS AND SIGMA MODELS: A MATHEMATICAL INVESTIGATION BETWEEN GENERAL RELATIVITY AND COTTON GRAVITY
… conformal vector field and a structure of generalized Harmonic Einstein manifold; we apply it to deduce a rigidity result for a closed φ-SPFST for which a suitable modification of the Schouten tensor is Codazzi and has some elementary symmetric function in its eigenvalues which is positive …
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On Some Geometry of Graphs
<p>In this thesis we study the intrinsic geometry of graphs via the constants that appear in discretized partial differential equations associated to those graphs. By studying the behavior of a discretized version of Bochner's inequality for smooth manifolds at the cone point for a cone over the …