High-resolution hardware-based packet capture with higher-layer pass-through on NetFPGA card

2014 ◽  
Author(s):  
Yaovi E. Kwasi ◽  
Roberto Rojas-Cessa
Keyword(s):  
High Resolution ◽  
Packet Capture ◽  
Pass Through

Radiation Damage, Contrast and Statistics in High Resolution Biological Electron Microscopy

1970 ◽  
Vol 28 ◽  
pp. 260-261
Author(s):  
Robert M. Glaeser
Keyword(s):  
High Resolution ◽  
Particle Flux ◽  
Unit Area ◽  
Signal To Noise ◽  
Resolution Image ◽  
High Resolution Image ◽  
Pass Through ◽  
Counting Statistics ◽  
The Relationship ◽  
Picture Element

It is well known that a large flux of electrons must pass through a specimen in order to obtain a high resolution image while a smaller particle flux is satisfactory for a low resolution image. The minimum particle flux that is required depends upon the contrast in the image and the signal-to-noise (S/N) ratio at which the data are considered acceptable. For a given S/N associated with statistical fluxtuations, the relationship between contrast and “counting statistics” is s131_eqn1, where C = contrast; r2 is the area of a picture element corresponding to the resolution, r; N is the number of electrons incident per unit area of the specimen; f is the fraction of electrons that contribute to formation of the image, relative to the total number of electrons incident upon the object.

Embodied Digital Rhetoric

2014 ◽  
pp. 312-327 ◽  
Author(s):  
Nonny de la Peña
Keyword(s):  
Virtual Reality ◽  
High Resolution ◽  
Case Studies ◽  
Philosophy Of Mind ◽  
Digital Rhetoric ◽  
Immersive Virtual Reality ◽  
The World ◽  
Technological Tools ◽  
Pass Through

A new embodied digital rhetoric emerges when using nonfiction narratives built in fully immersive virtual reality systems that take advantage of the plasticity of our sensations of presence. The feeling of “being-in-the-world” as described by phenomenologists, including philosophy of mind, film, and virtual reality theorists, is part of the adaptability that humans show in their relationship to technological tools. Andy Clark's “soft selves” and our “plastic presence” merge as the high resolution graphics of the latest virtual reality goggles and robust audio captured at real events tricks our minds into having an embodied connection with the stories portrayed in these new spaces. By putting people into news or documentary pieces on scene as themselves, opportunities for persuasive and effective rhetoric arise. This chapter cites theory, psychology and virtual reality research as well as the author's specific case studies to detail the potential for this new embodied digital rhetoric that allows us to pass through the screen and become present as witnesses to a nonfiction story.

scholarly journals Energy-Filtered Electron Holography

2005 ◽  
Vol 13 (5) ◽  
pp. 26-29
Author(s):  
Rodney A. Herring
Keyword(s):  
High Resolution ◽  
Atomic Structure ◽  
Background Intensity ◽  
Electron Holography ◽  
Gain Energy ◽  
Lattice Images ◽  
Pass Through

When electrons pass through a material, they can pass through without losing energy such as elastically scattered electrons or they can lose or gain energy by inelastically scattering with the material's electrons. The elastically scattered electrons have been used in the simulations of lattice images, which are used to help determine the atomic structure of materials. Inelastically scattered electrons were ignored in the simulations because it was believed that they did not have the required coherence to interfere with themselves and they contributed only to the background intensity. Recently though, a great deal of interest has been generated in knowing whether the inelastically scattered electrons can also contribute to the lattice images in order to help explain the Stobbs factor [1], where the contrast in the lattice images is often three or more times less than the theory predicts. The Stobbs factor makes it difficult, if not impossible, to establish quantitative values to high-resolution lattice images.

Ultra-High Resolution with The Jem-2010F Field-Emission Tem

1996 ◽  
Vol 54 ◽  
pp. 464-465
Author(s):  
F. Hosokawa ◽  
T. Tomita ◽  
T. Honda ◽  
M. Kersker
Keyword(s):  
High Resolution ◽  
Field Emission ◽  
Chromatic Aberration ◽  
Chemical Imaging ◽  
Optical Parameters ◽  
Contrast Transfer Function ◽  
Spatial Frequencies ◽  
Contrast Enhanced ◽  
Image Blurring ◽  
Pass Through

Historically, high probe current in small probes has been the principal virtue of the field emission TEM. Analytical performance is greatly enhanced[1] and fine probe mapping an important analytical tool for trace element segregation and very fine scale high resolution chemical imaging. Less appreciated is the enhanced high resolution capability due to the small energy spread of the electron source and higher coherency due to reduced primary and virtual source size. The envelope function of the phase contrast transfer function (PCTF) is drastically improved reducing image blurring due to both chromatic aberration and specimen illumination angle. This is especially true for the high spatial frequencies beyond the first zero. Intensities sufficient for image formation can be obtained from these higher frequency regions. Since the PCTF does not change its form, photographing images at the Scherzer condition will yield higher resolution with higher coherency, however, the transfer of the specimen potential corresponding to contrast enhanced regions is in the oscillations form beyond the first zero. Changes in the defocus will lead to changes in transferred frequencies beyond the first zero and possible extinctions of otherwise transferred information since the oscillations will pass through zero contrast. Interpretation of images under these conditions will, therefore, require accurate measurement of the optical parameters of the microscope and especially accurate measurements of the defocus conditions. It is also important to calculate images under these conditions for comparison with measured images which give the insurance of defocus conditions supposed to be presented.

scholarly journals Super sonic: High-resolution ultrasonic spectroscopy

2002 ◽  
Vol 24 (4) ◽  
pp. 25-27 ◽  
Author(s):  
Vitaly Buckin ◽  
Evegny Kudryashov
Keyword(s):  
High Resolution ◽  
Ultrasonic Waves ◽  
Dynamic Processes ◽  
Ultrasonic Spectroscopy ◽  
Analytical Technique ◽  
Wide Range ◽  
Pass Through ◽  
Non Destructive

High-resolution ultrasonic spectrometry is a novel analytical technique with enormous potential for the investigation of a wide range of samples and dynamic processes. The non-destructive technique is based on measuring the changes that take place to ultrasonic waves as they pass through materials.

Observations of the spatial structure of interstellar hydrogen

1967 ◽  
Vol 31 ◽  
pp. 45-46
Author(s):  
Carl Heiles
Keyword(s):  
High Resolution ◽  
Spatial Structure ◽  
Velocity Dispersion ◽  
Temperature Variations

High-resolution 21-cm line observations in a region aroundlII= 120°,b11= +15°, have revealed four types of structure in the interstellar hydrogen: a smooth background, large sheets of density 2 atoms cm-3, clouds occurring mostly in groups, and ‘Cloudlets’ of a few solar masses and a few parsecs in size; the velocity dispersion in the Cloudlets is only 1 km/sec. Strong temperature variations in the gas are in evidence.

Combining integrated systems-biology approaches with intervention-based experimental design provides a higher-resolution path forward for microbiome research

2019 ◽  
Vol 42 ◽  
Author(s):  
J. Alfredo Blakeley-Ruiz ◽  
Carlee S. McClintock ◽  
Ralph Lydic ◽  
Helen A. Baghdoyan ◽  
James J. Choo ◽  
...  
Keyword(s):  
Systems Biology ◽  
High Resolution ◽  
Experimental Design ◽  
Integrated Systems ◽  
Microbiome Research ◽  
Constructive Criticism

Abstract The Hooks et al. review of microbiota-gut-brain (MGB) literature provides a constructive criticism of the general approaches encompassing MGB research. This commentary extends their review by: (a) highlighting capabilities of advanced systems-biology “-omics” techniques for microbiome research and (b) recommending that combining these high-resolution techniques with intervention-based experimental design may be the path forward for future MGB research.

Very High Resolution Analysis of the Dynamics of a Coronal Plasmoid

1994 ◽  
Vol 144 ◽  
pp. 593-596
Author(s):  
O. Bouchard ◽  
S. Koutchmy ◽  
L. November ◽  
J.-C. Vial ◽  
J. B. Zirker
Keyword(s):  
High Resolution ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Field Of View ◽  
Small Field ◽  
High Resolution Analysis ◽  
Ccd Observations ◽  
Resolution Analysis ◽  
Very High ◽  
Small Field Of View

AbstractWe present the results of the analysis of a movie taken over a small field of view in the intermediate corona at a spatial resolution of 0.5“, a temporal resolution of 1 s and a spectral passband of 7 nm. These CCD observations were made at the prime focus of the 3.6 m aperture CFHT telescope during the 1991 total solar eclipse.

FeXIV Line Emission Polarization of the July 11, 1991 Solar Corona

1994 ◽  
Vol 144 ◽  
pp. 541-547
Author(s):  
J. Sýkora ◽  
J. Rybák ◽  
P. Ambrož
Keyword(s):  
High Resolution ◽  
Solar Corona ◽  
Emission Line ◽  
Solar Eclipse ◽  
White Light ◽  
Preliminary Analysis ◽  
Line Emission ◽  
Total Solar Eclipse ◽  
Degree Of Polarization ◽  
High Resolution Images

AbstractHigh resolution images, obtained during July 11, 1991 total solar eclipse, allowed us to estimate the degree of solar corona polarization in the light of FeXIV 530.3 nm emission line and in the white light, as well. Very preliminary analysis reveals remarkable differences in the degree of polarization for both sets of data, particularly as for level of polarization and its distribution around the Sun’s limb.

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