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.
Results
Showing 1 to 8 of 8 for “"Phase reversal"”.
-
Speech intelligibility in tracked vehicles and pink noise under active noise reduction and passive attenuation communications headsets
… noise conditions, two conditions of bilateral phase reversal of the speech signal, and the three headset systems. These three independent variables were studied in a full factorial within-subjects design. The noise conditions were pink noise and recordings from the troop carrying compartment of …
-
Photoemission Studies of *Interface Effects on Thin Film Properties
… period. A comparison among the systems reveals a phase reversal and an amplitude deviation in the stability temperatures. For Pb/In- 3 x 3 /Si(111), films made of odd numbers of atomic layers are observed to be more stable than the even ones, but this trend is reversed for the other cases studied. …
-
Investigation of the Clinical Utility of the Spatio-Spectral Dynamics of Sensorimotor ECoG in Response to Different Somatosensory Stimulation Modalities in Human Subjects
… the peripheral nerves, visual assessment of the phase reversal of the somatosensory evoked potentials (SSEPs) is employed to delineate the central sulcus (CS). However, proper assessment of the phase reversal in the SSEP waveform is challenging due to the variations in the waveform morphology …
-
Analysis and Reduction of Moire Patterns in Scanned Halftone Pictures
… scanned. Specifically, we study the frequency, phase, and spatial geometry of a moire pattern. We observe and explain the half period phase reversal phenomenon that a moire pattern may exhibit. As a case study, we examine the moire patterns generated by a commercial scanner. We propose three …
-
Theoretical and Lidar Studies of the Density Response of the Mesospheric Sodium Layer to Gravity Wave Perturbations
… interesting effects are observed such as a phase reversal in the linear layer response which occurs near the layer peak. Once the layer response is understood, the sodium layer can be used as a tracer of atmospheric wave motions.
-
Existence and stability analysis of ferroresonance using the generalized state-space averaging technique
… undesired over-voltage often accompanied with a phase reversal which can damage power distribution transformers and motors and cause injury to the system operators. Similarly, under some conditions, power distribution transformers can excite subharmonic frequencies which in turn can damage the …
-
Photoemission studies of interface effects on thin film properties
… period. A comparison among the systems reveals a phase reversal and an amplitude deviation in the stability temperatures. For Pb/In- 3 x 3 /Si(111), films made of odd numbers of atomic layers are observed to be more stable than the even ones, but this trend is reversed for the other cases studied. …
-
Investigating the orientational order in smectic liquid crystals.
… The first one is the investigation of a reversed phase sequence, which subsequently leads to the discovery of a novel Smectic-C liquid crystal phase. The 10OHFBBB1M7 (10OHF) compound shows a reversed phase sequence with the SmC∗ d4 phase occurring at a higher temperature than the SmC∗ phase. This …