scholarly journals Control modulation instability in photorefractive crystals by the intensity ratio of background to signal fields

2015 ◽  
Vol 23 (8) ◽  
pp. 10266 ◽  
Author(s):  
Chien-Chung Jeng ◽  
Yonan Su ◽  
Ray-Ching Hong ◽  
Ray-Kuang Lee
Keyword(s):  
Intensity Ratio ◽  
Modulation Instability ◽  
Photorefractive Crystals

Spatial Solitons and Shock Waves in Photorefractive Crystals with Nonlocal Nonlinearity

1997 ◽  
Vol 06 (04) ◽  
pp. 421-442 ◽  
Author(s):  
V. Kutuzov ◽  
V. M. Petnikova ◽  
V. V. Shuvalov ◽  
V. A. Vysloukh
Keyword(s):  
Shock Waves ◽  
Nonlinear Response ◽  
Modulation Instability ◽  
Spatial Scales ◽  
Spatial Solitons ◽  
Photorefractive Crystals ◽  
Nonlocal Nonlinearity ◽  
New Type ◽  
Diffusion Mechanisms ◽  
And Diffusion

An analytical model has been developed to describe both drift and diffusion mechanisms of nonlinear response (local and nonlocal components of nonlinearity) of photorefractive crystals (PRCs) on a microscopic level. Some types of stable self-consistent distributions of light intensity — bright and dark photorefractive spatial solitons — have been considered. Paths of their propagation (self-bending) have been calculated and a possibility of formation of a new type of soliton-like distributions — spatial shock waves — has been shown. Analysis of plane wave modulation instability has been performed and specific spatial scales of light distribution, resulting from self-action processes (fanning), have been calculated. All the analytical results have been confirmed using computer simulation.

Temperature dependency of modulation instability in photorefractive crystals

2013 ◽  
Vol 45 ◽  
pp. 678-683 ◽  
Author(s):  
Kaiyun Zhan ◽  
Xin Li ◽  
Shaozhi Pu ◽  
Chunfeng Hou
Keyword(s):  
Modulation Instability ◽  
Temperature Dependency ◽  
Photorefractive Crystals

Effect of Consonant-Vowel Ratio Modification on Amplitude Envelope Cues for Consonant Recognition

1991 ◽  
Vol 34 (2) ◽  
pp. 415-426 ◽  
Author(s):  
Richard L. Freyman ◽  
G. Patrick Nerbonne ◽  
Heather A. Cote
Keyword(s):  
White Noise ◽  
Intensity Ratio ◽  
Recognition Performance ◽  
Amplitude Envelope ◽  
Signal To Noise ◽  
Noise Masking ◽  
Spectral Cues ◽  
Consonant Recognition ◽  
Nonlinear Amplification ◽  
Speech Envelope

This investigation examined the degree to which modification of the consonant-vowel (C-V) intensity ratio affected consonant recognition under conditions in which listeners were forced to rely more heavily on waveform envelope cues than on spectral cues. The stimuli were 22 vowel-consonant-vowel utterances, which had been mixed at six different signal-to-noise ratios with white noise that had been modulated by the speech waveform envelope. The resulting waveforms preserved the gross speech envelope shape, but spectral cues were limited by the white-noise masking. In a second stimulus set, the consonant portion of each utterance was amplified by 10 dB. Sixteen subjects with normal hearing listened to the unmodified stimuli, and 16 listened to the amplified-consonant stimuli. Recognition performance was reduced in the amplified-consonant condition for some consonants, presumably because waveform envelope cues had been distorted. However, for other consonants, especially the voiced stops, consonant amplification improved recognition. Patterns of errors were altered for several consonant groups, including some that showed only small changes in recognition scores. The results indicate that when spectral cues are compromised, nonlinear amplification can alter waveform envelope cues for consonant recognition.

Nonlinear Pulse Propagation and Modulation Instability in Periodic Media with and without Defects

PIERS Online ◽  
2006 ◽  
Vol 2 (2) ◽  
pp. 177-181
Author(s):  
V. Grimalsky ◽  
Svetlana Koshevaya ◽  
Javier Sanchez-Mondragon ◽  
Margarita Tecpoyotl Torres ◽  
J. Escobedo Alatorre
Keyword(s):  
Pulse Propagation ◽  
Modulation Instability ◽  
Periodic Media ◽  
Nonlinear Pulse Propagation

DETERMINAN KINERJA PERUSAHAAN TERHADAP AGRESIVITAS PAJAK (Studi Pada Perusahaan Sektor Perbankan yang terdaftar di Bursa Efek Indonesia Periode 2010-2014)

2017 ◽  
Vol 1 (1) ◽  
pp. 21
Author(s):  
Budi Rohmansyah
Keyword(s):  
Intensity Ratio ◽  
Capital Intensity ◽  
Purposive Sampling

Tujuan dari penelitian ini untuk mengetahui pengaruh ukuran perusahaan (size),leverage, capital intensity ratio, dan kepemilikan manajerial terhadap agresivitas pajak.Penelitian ini menggunakan sampel perusahaan perbankan selama tahun 2010-2014dengan menggunakan purposive sampling. Data yang digunakan diperoleh dari laporantahunan perusahaan yang terdaftar di Bursa Efek Indonesia sebanyak 11 perusahaan.Metode analisis yang digunakan adalah analisis regresi berganda, yaitu Uji F statistik,Uji t statisitik dan pengolahan data diolah dengan program SPSS.Hasil penelitian menunjukkan bahwa secara parsial (Ujit t) menunjukkan ukuranperusahaan (size) dan kepemilikan manajerial berpengaruh signifikan terhadapagresivitas pajak sedangkan leverage dan capital intensity ratio tidak berpengaruhsignifikan terhadap agresivitas pajak. Sedangkan secara simultan (Uji F) ukuranperusahaan (size), kepemilikan manajerial leverage dan capital intensity ratioberpengaruh signifikan terhadap agresivitas pajak.Kata Kunci: Agresivitas Pajak, Ukuran Perusahaan (SIZE), Leverage, Capital Intensity Ratio, Kepemilikan Manajerial.

High‐Resolution13CO and C18OJ= 1–0 Observations of NGC 1068: Molecular Gas Properties and a High C18O/13CO Intensity Ratio

1997 ◽  
Vol 477 (1) ◽  
pp. 518-518 ◽  
Author(s):  
Padeli P. Papadopoulos ◽  
E. R. Seaquist ◽  
N. Z. Scoville
Keyword(s):  
Intensity Ratio ◽  
Molecular Gas ◽  
Ngc 1068 ◽  
Gas Properties

Self-Focusing in Pulsed and Continuous Regime in Photorefractive Crystals: KNbO 3 , LiNbO 3 , Sr x Ba 1 − x Nb 2 O 6

2003 ◽  
Vol 296 (1) ◽  
pp. 9-18
Author(s):  
C. Hesse ◽  
D. Wolfersberger ◽  
N. Fressengeas ◽  
G. Kugel
Keyword(s):  
Photorefractive Crystals ◽  
Self Focusing ◽  
Continuous Regime
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