scholarly journals Optoelectronic Design of a Closed-Loop Depolarized IFOG with Sinusoidal Phase Modulation for Intermediate Grade Applications

2018 ◽  
Author(s):  
Ramón José Pérez Menéndez
Keyword(s):  
Phase Modulation ◽  
Closed Loop ◽  
Intermediate Grade

scholarly journals Double closed-loop resonant micro optic gyro using hybrid digital phase modulation

2015 ◽  
Vol 23 (12) ◽  
pp. 15088 ◽  
Author(s):  
Huilian Ma ◽  
Jianjie Zhang ◽  
Linglan Wang ◽  
Zhonghe Jin
Keyword(s):  
Phase Modulation ◽  
Closed Loop ◽  
Digital Phase

scholarly journals Ongoing brain rhythms shape I-wave properties in a computational model

2017 ◽  
Author(s):  
Natalie Schaworonkow ◽  
Jochen Triesch
Keyword(s):  
Computational Model ◽  
Phase Modulation ◽  
Closed Loop ◽  
Brain Activity ◽  
Cortical Layer ◽  
Oscillatory Activity ◽  
Cortical Circuits ◽  
Brain Rhythms ◽  
Sensorimotor Rhythms ◽  
Wave Properties

AbstractBackgroundResponses to transcranial magnetic stimulation (TMS) are notoriously variable. Previous studies have observed a dependence of TMS-induced responses on ongoing brain activity, for instance sensorimotor rhythms. This suggests an opportunity for the development of more effective stimulation protocols through closed-loop TMS-EEG. However, it is not yet clear how features of ongoing activity affect the responses of cortical circuits to TMS.Objective/HypothesisHere we investigate the dependence of TMS-responses on power and phase of ongoing oscillatory activity in a computational model of TMS-induced I-waves.MethodsThe model comprises populations of cortical layer 2/3 (L2/3) neurons and a population of cortical layer 5 (L5) neurons and generates I-waves in response to TMS. Oscillatory input to the L2/3 neurons induces rhythmic fluctuations in activity of L5 neurons. TMS pulses are simulated at different phases and amplitudes of the ongoing rhythm.ResultsThe model shows a robust dependence of I-wave properties on phase and power of ongoing rhythms, with the strongest response occurring for TMS at maximal L5 depolarization. The amount of phase-modulation depends on stimulation intensity, with stronger modulation for lower intensity.ConclusionThe model predicts that responses to TMS are highly variable for low stimulation intensities if ongoing brain rhythms are not taken into account. Closed-loop TMS-EEG holds promise for obtaining more reliable TMS effects.

Performance of closed-loop resonant micro-optic gyro with hybrid digital phase modulation

2015 ◽  
Author(s):  
Jianjie Zhang ◽  
Linglan Wang ◽  
Huilian Ma ◽  
Zhonghe Jin
Keyword(s):  
Phase Modulation ◽  
Closed Loop ◽  
Digital Phase

Closed-loop experiment of resonator integrated optic gyro with triangular wave phase modulation

2014 ◽  
Author(s):  
Yichuang Tang ◽  
Huilan Liu ◽  
Yinzhou Zhi ◽  
Lishuang Feng ◽  
Junjie Wang
Keyword(s):  
Phase Modulation ◽  
Closed Loop ◽  
Triangular Wave ◽  
Wave Phase

The observation of solutions in Ni3Nb

1988 ◽  
Vol 46 ◽  
pp. 540-541
Author(s):  
Z.M. Wang ◽  
J.P. Zhang
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Phase Modulation ◽  
High Resolution Electron Microscopy ◽  
Antiphase Domain ◽  
Boundary Area ◽  
Matrix Type ◽  
Resolution Electron ◽  
Domain Boundaries ◽  
Kontorova Model

High resolution electron microscopy reveals that antiphase domain boundaries in β-Ni3Nb have a hexagonal unit cell with lattice parameters ah=aβ and ch=bβ, where aβ and bβ are of the orthogonal β matrix. (See Figure 1.) Some of these boundaries can creep “upstairs” leaving an incoherent area, as shown in region P. When the stepped boundaries meet each other, they do not lose their own character. Our consideration in this work is to estimate the influnce of the natural misfit δ{(ab-aβ)/aβ≠0}. Defining the displacement field at the boundary as a phase modulation Φ(x), following the Frenkel-Kontorova model [2], we consider the boundary area to be made up of a two unit chain, the upper portion of which can move and the lower portion of the β matrix type, assumed to be fixed. (See the schematic pattern in Figure 2(a)).

Intestinal Bacteriology of Closed Loop, Strangulated Obstruction in Dogs.

1961 ◽  
Vol 41 (3) ◽  
pp. 245-250 ◽  
Author(s):  
George H. Bornside ◽  
Isidore Cohn
Keyword(s):  
Closed Loop
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