Results 101 to 110 of about 85,937 (304)

Auditory motion parallax [PDF]

open access: yesProceedings of the National Academy of Sciences, 2018
When an object vibrates and produces an audible sound, many animals locate the position of the sound source based on only the sound. The horizontal (azimuth), vertical (elevation), and distance (range) of sound sources can often be determined, in some cases with high acuity (1).
openaire   +3 more sources

Epithelial cell shape changes contribute to regulation of ureteric bud branching morphogenesis

open access: yesThe FEBS Journal, EarlyView.
Ureteric bud (UB) branching determines the final size, shape, and nephron number of kidneys. Characterization of UB cell shapes identified dynamic round‐to‐elliptical transitions and cellular volume changes as critical epithelial modifications that increase morphological complexity in UB tips during their transitions through ampulla‐to‐asymmetric ...
Kristen Kurtzeborn   +9 more
wiley   +1 more source

Attributes of Gravitational Lensing Parallax [PDF]

open access: yes, 1998
The density of stars and MACHOs in the universe could theoretically be determined or limited by simultaneous measurements of compact sources by well separated observers.
Nemiroff, Robert J.
core   +3 more sources

Comparison of GOES16 Data with the TRACER-ESCAPE Field Campaign Dataset for Convection Characterization: A Selection of Case Studies and Lessons Learnt

open access: yesRemote Sensing
Convective updrafts are one of the main characteristics of convective clouds, responsible for the convective mass flux and the redistribution of energy and condensate in the atmosphere.
Aida Galfione   +4 more
doaj   +1 more source

Image Enhancement of Computational Reconstruction in Diffraction Grating Imaging Using Multiple Parallax Image Arrays

open access: yesSensors, 2020
This paper describes an image enhancement method of computational reconstruction for 3-D images with multiple parallax image arrays in diffraction grating imaging. A 3-D imaging system via a diffraction grating provides a parallax image array (PIA) which
Jae-Young Jang, Hoon Yoo
doaj   +1 more source

The Frequency Distribution of Some Measured Parallaxes and of the Parallaxes Themselves [PDF]

open access: yesProceedings of the National Academy of Sciences, 1925
It is well known that the frequency functions of a set of quantities and of their measures are different ; if the error of measurement is comparable in magnitude to the quantity determined, they nmay be decidedly dissimilar. In the case of good photographic parallaxes the reported probable errors average about eight one-thousandths of a second of arc ...
Edwin B. Wilson, Willem J. Luyten
openaire   +3 more sources

Quantifying phase magnitudes of open‐source focused‐probe 4D‐STEM ptychography reconstructions

open access: yesJournal of Microscopy, EarlyView.
Abstract Accurate computational ptychographic phase reconstructions are enabled by fast direct‐electron cameras with high dynamic ranges used for four‐dimensional scanning transmission electron microscopy (4D‐STEM). The availability of open software packages is making such analyses widely accessible, and especially when implemented in Python, easy to ...
Toma Susi
wiley   +1 more source

EyePACT: eye-based parallax correction on touch-enabled interactive displays [PDF]

open access: yes, 2017
The parallax effect describes the displacement between the perceived and detected touch locations on a touch-enabled surface. Parallax is a key usability challenge for interactive displays, particularly for those that require thick layers of glass ...
Alt, Florian   +4 more
core   +1 more source

Contrast by electron microscopy in thick biological specimens

open access: yesJournal of Microscopy, EarlyView.
Abstract The contributions of coherent bright‐field phase and incoherent dark‐field amplitude contrast are investigated for thick biological specimens. A model for a T4 phage is constructed and images simulated for both TEM and STEM phase contrast using a multislice code.
Peter Rez   +3 more
wiley   +1 more source

Parallax

open access: yes, 2013
For the uninitiated, parallax is a fancy term for triangulation, which we humans naturally do in the form of depth perception – your eyes are separated by a small distance from each other so they see slightly different views of the world. You can try it now by closing one eye, holding out your thumb, and lining it up with a mark on a far wall, then ...
openaire   +1 more source

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