This article describes a digital implementation of timealgorithm provides an all-electronic area or volume imaging techdelay sonar imaging for linear swept-frequency (chirp) sources. The nique. Side-looking sonar is the principal tool for acoustic seabed technique, based on phase-shifting of match-f
A simple effective Hamiltonian for low-frequency linear responses
β Scribed by Robert A. Harris; Lawrence Pratt
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 311 KB
- Volume
- 203
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
It is shown that low-frequency linear responses may be obtained formally from second-order stationary state perturbation theory through the use of effective potentials. The effective potentials are related to time averages of Heisenberg operators.
π SIMILAR VOLUMES
An analytical formula is derived for the tunneling splitting for a particle in a double-well potential linearly coupled to a lowfrequency harmonic bath. Together with another previously developed treatment the formula can be used to interpret the tunneling splittings in molecules such as malonaldehy
Frequency response function matrices relate the inputs and the outputs of structural dynamic systems. If a system is linear the frequency response function matrix is the same for any combination or types of inputs over the entire operating range. Furthermore, the frequency response matrix of a linea
## Abstract Recent advances in tissue engineering techniques have allowed porous biomaterials to be combined with osteogenic cells for effective bone regeneration. We developed a simple lowβpressure cellβloading method using only syringes and stopcocks, and examined the effect of this method on ost