damping parameter
81Modal testing — is a form of vibration testing of an object whereby the natural (modal) frequencies, modal masses, modal damping ratios and mode shapes of the object under test are determined. A modal test consists of an acquisition phase and an analysis phase.… …
82Seismic analysis — is a subset of structural analysis and is the calculation of the response of a building (or nonbuilding) structure to earthquakes. It is part of the process of structural design, earthquake engineering or structural assessment and retrofit (see… …
83COMSOL Multiphysics — Developer(s) COMSOL Stable release 4.2a / October 14, 2011; 17 days ago (2011 10 14) …
84Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …
85Electronic filter topology — An elementary filter topology introduces a capacitor into the feedback path of an op amp to achieve an unbalanced active implementation of a low pass transfer function Electronic filter topology defines electronic filter circuits without taking… …
86Reaction–diffusion system — Reaction–diffusion systems are mathematical models which explain how the concentration of one or more substances distributed in space changes under the influence of two processes: local chemical reactions in which the substances are transformed… …
87High strain dynamic testing — is a method of testing deep foundations to obtain information about their capacity and integrity, and in some cases, to monitor their installation. It is codified by D4945 00 Standard Test Method for High Strain Dynamic Testing of Piles. High… …
88Bundle adjustment — right|thumb|A sparse matrix obtained when solving a modestlysized bundle adjustment problem. This is the sparsity pattern of a 992x992 normal equations(i.e. approximate Hessian) matrix. Black regions correspond to nonzero blocks.Given a set of… …
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