Results 21 to 30 of about 5,398,404 (309)

Enhancing Multi-Distance Phase Retrieval via Unequal Interval Measurements

open access: yesPhotonics, 2021
In the conventional methods of multi-distance phase retrieval, the diffraction intensity patterns are recorded at equal intervals, which can induce slow convergence or stagnation in the subsequent reconstruction process.
Cheng Xu   +6 more
doaj   +1 more source

Aircraft positioning using multiple distance measurements and spline prediction

open access: yesAviation, 2022
During the crucial phases of take-off, initial climb, approach, and landing where aircraft are close to the ground, Global Navigation Satellite Systems (GNSS) signal strength may not be sufficient to guarantee safe operation, especially in the presence ...
Ivan Ostroumov   +2 more
doaj   +1 more source

Bhattacharyya’s distance measure as a precursor of genetic distance measures

open access: yesJournal of Biosciences, 2004
In Population Genetics, two populations are distinguished from each other on the basis of the differences in the distributions of the alleles at the locus or loci under consideration. These differences are measured by a “genetic distance” between the two populations (not to be confused with genetic distance between two loci, which is based on ...
Aparna, Chattopadhyay   +2 more
openaire   +2 more sources

Distance measures for embedded graphs [PDF]

open access: yesComputational Geometry, 2021
We introduce new distance measures for comparing straight-line embedded graphs based on the Fréchet distance and the weak Fréchet distance. These graph distances are defined using continuous mappings and thus take the combinatorial structure as well as the geometric embeddings of the graphs into account.
Hugo A. Akitaya   +4 more
openaire   +7 more sources

Site Selective and Efficient Spin Labeling of Proteins with a Maleimide-Functionalized Trityl Radical for Pulsed Dipolar EPR Spectroscopy

open access: yesMolecules, 2019
Pulsed dipolar electron paramagnetic resonance spectroscopy (PDS) in combination with site-directed spin labeling (SDSL) of proteins and oligonucleotides is a powerful tool in structural biology.
J. Jacques Jassoy   +6 more
doaj   +1 more source

Kompariranje in kalibriranje elektronskih tahimetrov : Comparison and Calibration of Electronic Distance Meters [PDF]

open access: yesGeodetski Vestnik, 2003
All measuring instruments are subject to errors. Due to their characteristics random errors cannot be influenced and with instrument calibration they cannot be eliminated.
Florjan Vodopivec, Dušan Kogoj
doaj  

Normal Distance Measurements Between the Origins of the Major Branches of the Abdominal Aorta on Computed Tomography Angiography in Children

open access: yesNamık Kemal Tıp Dergisi, 2022
Aim:The aim of the present study was to determine the normal distances between the origins of the major branches of the abdominal aorta, and their distances to the aorta at the diaphragmatic region and iliac bifurcation on multidetector computed ...
Edis ÇOLAK
doaj   +1 more source

The Influence of a Photometric Distance on Luminance Measurements

open access: yesEnergies, 2023
Luminance measurements are the least frequent of all photometric measurements. This article characterizes and systematizes the various methods of luminance measurement.
Dariusz Czyżewski
doaj   +1 more source

Experimental Study of Silent Sonar

open access: yesArchives of Acoustics, 2014
Stealth is a frequent requirement in military applications and involves the use of devices whose signals are difficult to intercept or identify by the enemy.
Jacek MARSZAL
doaj   +1 more source

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