Matching Suitability of Geomagnetic Aided Navigation Based on Spectral Moment Characteristics

2011 ◽

Vol 21 (2) ◽

pp. 44-54

Author(s):

Kerry Callahan Mandulak

Keyword(s):

Speech Production ◽

Speech Signal ◽

Clinical Utility ◽

Acoustic Analysis ◽

Moment Analysis ◽

Analysis Tool ◽

Spectral Moment ◽

Clinical Measure ◽

Perceptual Analysis ◽

Disordered Speech

Spectral moment analysis (SMA) is an acoustic analysis tool that shows promise for enhancing our understanding of normal and disordered speech production. It can augment auditory-perceptual analysis used to investigate differences across speakers and groups and can provide unique information regarding specific aspects of the speech signal. The purpose of this paper is to illustrate the utility of SMA as a clinical measure for both clinical speech production assessment and research applications documenting speech outcome measurements. Although acoustic analysis has become more readily available and accessible, clinicians need training with, and exposure to, acoustic analysis methods in order to integrate them into traditional methods used to assess speech production.

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Pseudowhitening of weather Radar signals to improve spectral moment and polarimetric variable estimates at low signal-to-noise ratios

IEEE Transactions on Geoscience and Remote Sensing ◽

10.1109/tgrs.2004.825579 ◽

2004 ◽

Vol 42 (5) ◽

pp. 941-949 ◽

Cited By ~ 12

Author(s):

S.M. Torres ◽

C.D. Curtis ◽

J.R. Cruz

Keyword(s):

Weather Radar ◽

Spectral Moment ◽

Signal To Noise ◽

Radar Signals

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Method of estimating the second central spectral moment

Radiophysics and Quantum Electronics ◽

10.1007/bf01040335 ◽

1975 ◽

Vol 18 (10) ◽

pp. 1069-1071

Author(s):

M. A. Sokolov ◽

V. I. Khimenko

Keyword(s):

Spectral Moment

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Spectral Analysis of Irregular Wave Impact on the Structure in Splash Zone

21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1 ◽

10.1115/omae2002-28091 ◽

2002 ◽

Cited By ~ 1

Author(s):

Bing Ren ◽

Yongxue Wang

Keyword(s):

Spectral Analysis ◽

Wave Height ◽

Incident Wave ◽

Impact Pressure ◽

Splash Zone ◽

Spectral Moment ◽

Wave Impact ◽

Large Wave ◽

Irregular Wave ◽

The Impact

The spectral analysis from experimental data of irregular wave impact on the structures with large dimension in the splash zone is presented. The experiments were conducted in the large wave-current tank in the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology. In the experiment, the target spectrum is JONSWAP spectrum, the significant wave height H1/3 is in the range from 0.1m to 0.3m, and the peak period of spectrum Tp in the range from 1.0s to 2.0s. The ratio of s/H1/3, which refers to the clearance of the subface of the structure above still water level (s) to the incident wave height, is between −0.1 and 0.4. The spectral analysis results of the irregular wave impact pressure on the subface of the structure under various case studies are presented. The distribution of spectral moment of the impact pressure on the structure along the subface is given. And the influence of different incident wave parameters and relative clearance s/H1/3 on the average spectral moment of impact pressure are discussed.

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Pressure-induced absorption in nonpolar gases containing tetrahedral molecules

Canadian Journal of Physics ◽

10.1139/p76-066 ◽

1976 ◽

Vol 54 (5) ◽

pp. 611-617 ◽

Cited By ~ 24

Author(s):

A. D. Buckingham ◽

A. J. C. Ladd

Keyword(s):

Dipole Moment ◽

Field Gradient ◽

Infrared Radiation ◽

Far Infrared ◽

Spectral Moment ◽

Induced Absorption ◽

Integrated Intensity ◽

Tetrahedral Molecules ◽

Spherical Molecule ◽

Far Infrared Radiation

The theory of pressure-induced absorption of far infrared radiation by gases is extended to include the contribution of the dipole moment induced in a molecule by the field gradient due to its neighbours. This dipole is nonzero when the molecule lacks a centre of inversion, as in a tetrahedron. In the collision of two tetrahedra, the dipole induced in molecule 2 by the electric field of the octopole moment Ω1 of the partner leads to transitions in which ΔJ(1) = 0, ± 1, ±2, ±3, and ΔJ(2) = 0. The dipole induced by the field gradient of Ω1 leads to ΔJ(1) = 0, ±1, ±2, ±3, and ΔJ(2) = 0, ±1, ±2, ±3, and therefore gives a required increase in absorption at higher frequencies. The field-gradient contribution vanishes in a collision involving a tetrahedral and a spherical molecule. General expressions are given for the field-gradient contributions to the integrated intensity and to the −2 spectral moment.

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