scholarly journals Integrating Triply‐ and Singly‐Bent Highly Flexible Crystal Optical Waveguides for Organic Photonic Circuit with a Long‐Pass‐Filter Effect

2021 ◽  
Author(s):  
Mari Annadhasan ◽  
Vuppu Vinay Pradeep ◽  
Avulu Vinod Kumar ◽  
Jada Ravi ◽  
Rajadurai Chandrasekar
Keyword(s):  
Optical Waveguides ◽  
Pass Filter ◽  
Filter Effect ◽  
Photonic Circuit

scholarly journals Magnetospheric response to magnetosheath pressure pulses: A low-pass filter effect

2013 ◽  
Vol 118 (9) ◽  
pp. 5454-5466 ◽  
Author(s):  
M. O. Archer ◽  
T. S. Horbury ◽  
J. P. Eastwood ◽  
J. M. Weygand ◽  
T. K. Yeoman
Keyword(s):  
Pass Filter ◽  
Low Pass Filter ◽  
Filter Effect ◽  
Pressure Pulses ◽  
Low Pass

scholarly journals Mechanisms of crossing for two optical waveguides based on dark spatial solitons

2003 ◽  
Vol 13 (3) ◽  
pp. 33-38 ◽  
Author(s):  
M. Torres-Cisneros ◽  
Edgar E. Alvarado Méndez ◽  
Marco Antonio Meneses-Nava ◽  
L. Aguilera Cortés ◽  
R. Guzmán-Cabrera ◽  
...  
Keyword(s):  
Optical Waveguides ◽  
Dark Soliton ◽  
Optical Channel ◽  
Finite Width ◽  
Spatial Solitons ◽  
Fundamental Study ◽  
Pass Filter ◽  
Optical Wave ◽  
Low Pass Filter ◽  
Effective Phase

A fundamental study on the capability of a crossing of two optical wave guides basedon dark-spatial solitons to act as a controllable optical beam splitter is presented in this work. It is based on the fact that the guided beam is diffracted at the wave guide crossing by an effective phase screen formed by the soliton collision profile. It was found that when the two dark solitons are immersed into the same finite bright background, the energy of a guided beam can be split into the desired optical channel according to the collision angle. On the other hand, when each dark soliton is immersed into its own bright background, the corresponding optical junction can not operate. This is because the finite width of the backgrounds acts as a low-pass filter over the diffracted beam, and because the onset of the cross-phase modulation instability effect occurs for small enough collision angles.

Fitts' law as a low-pass filter effect of muscle stiffness

1992 ◽  
Vol 11 (1-2) ◽  
pp. 11-21 ◽  
Author(s):  
Gerard P. van Galen ◽  
Lambert R.B. Schomaker
Keyword(s):  
Muscle Stiffness ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Fitts Law ◽  
Filter Effect ◽  
Low Pass

scholarly journals The High-Pass Filter Hypothesis for Autism Spectrum Disorder (ASD)

2018 ◽  
Author(s):  
Luca Dellanna
Keyword(s):  
Autism Spectrum Disorder ◽  
Interpersonal Communication ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Pass Filter ◽  
High Pass Filter ◽  
Filter Effect ◽  
Underlying Causes ◽  
The Relationship ◽  
High Pass

This paper proposes that one of the underlying causes of Autism Spectrum Disorder is the presence of a High-Pass Filter Effect applied to cognitive perception. Such an effect causes an enhancement of local details at the expense of global patterns. In particular, the High-Pass Filter Effect induces a disadvantage pertaining to mastering contextual fields (fields in which local features are noisy and information is distributed in adjacent perceptual pieces and in the relationship between them; for instance, interpersonal communication). Furthermore, in some cases, the High-Pass Filter Effect produces an advantage with respect to mastering detailed fields (fields in which information is intrinsic in modular, precise pieces of information; for example, computer science).In this paper, the High-Pass Filter Effect is explained, two secondary effects are described, (Peripheral Functionality Blindness and Prioritization by Specificity), and then a few examples of the way in which these effects induce the symptoms of Autism Spectrum Disorder are reported.

scholarly journals The Columnar Hypothesis for the High-Pass Filter Effect in Autism Spectrum Disorder (ASD)

2018 ◽  
Author(s):  
Luca Dellanna
Keyword(s):  
Autism Spectrum Disorder ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Cortical Column ◽  
Pass Filter ◽  
High Pass Filter ◽  
Filter Effect ◽  
Underlying Causes ◽  
High Pass ◽  
Possible Cause

It has been suggested that one of the underlying causes of Autism Spectrum Disorder (ASD) is the presence of a High-Pass Filter Effect applied to cognitive perception (DellAnna, 2018a). Such an effect leads to an enhancement of local details at the expense of global patterns. This paper proposes a possible cause for the High-Pass Filter Effect, which is increased columnar density.It is already known that brains of people affected with ASD tend to have denser cortical column fields (Casanova, Buxhoeveden, Switala, & Roy, 2002). This paper, however, explains the way in which denser cortical columns fields lead to sharper, narrower categorizations in the intermediate perceptual areas of the cortex, which in turn induce the High-Pass Filter Effect and, consequently, most of the symptoms characteristic of ASD.

Density-based discrimination of protein and RNA in the ribosome

1992 ◽  
Vol 50 (1) ◽  
pp. 464-465
Author(s):  
Joachim Frank
Keyword(s):  
Transfer Function ◽  
Spatial Frequency ◽  
Three Dimensional ◽  
Wiener Filter ◽  
Dark Field Image ◽  
Dark Field ◽  
Frequency Range ◽  
Bright Field ◽  
Contrast Transfer Function ◽  
Pass Filter

Cryo-electron microscopy combined with single-particle reconstruction techniques has allowed us to form a three-dimensional image of the Escherichia coli ribosome.In the interior, we observe strong density variations which may be attributed to the difference in scattering density between ribosomal RNA (rRNA) and protein. This identification can only be tentative, and lacks quantitation at this stage, because of the nature of image formation by bright field phase contrast. Apart from limiting the resolution, the contrast transfer function acts as a high-pass filter which produces edge enhancement effects that can explain at least part of the observed variations. As a step toward a more quantitative analysis, it is necessary to correct the transfer function in the low-spatial-frequency range. Unfortunately, it is in that range where Fourier components unrelated to elastic bright-field imaging are found, and a Wiener-filter type restoration would lead to incorrect results. Depending upon the thickness of the ice layer, a varying contribution to the Fourier components in the low-spatial-frequency range originates from an “inelastic dark field” image. The only prospect to obtain quantitatively interpretable images (i.e., which would allow discrimination between rRNA and protein by application of a density threshold set to the average RNA scattering density may therefore lie in the use of energy-filtering microscopes.

Sign in / Sign up

Export Citation Format

Share Document