Results 21 to 30 of about 10,408,415 (315)

Video Distance Measurement Technique Using Least Squares Based Sharpness Cost Function

open access: yesMathematics, 2022
A wide range of precision applications requires video measuring systems that achieve a large number of successive measurements and deliver fast results. Their efficiency is essentially given by the technical performances of the used equipment and by the ...
Elena Serea   +3 more
doaj   +1 more source

A vectorial tree distance measure [PDF]

open access: yesScientific Reports, 2021
Abstract A vectorial distance measure for trees is presented. Given two trees, we define a Tree-Alignment (T-Alignment). We T-align the trees from their centers outwards, starting from the root-branches, to make the next level as similar as possible.
Avner Priel, Boaz Tamir
openaire   +3 more sources

Detection of Changes in Oil Well Power Consumption Profile on the Basis of Dynamic Time Warping Algorithm

open access: yesProceedings of the International Conference on Applied Innovations in IT, 2018
At present oil companies are forced to continually decrease electric power inputs. However, energy efficiency of oil well equipment decreases in time. Well re-equipment enables to stop energy efficiency loss but it requires large additional inputs.
Ivan Luzyanin, Anton Petrochenkov
doaj   +1 more source

The Distance to the Massive Eclipsing Binary LMC-SC1-105 in the Large Magellanic Cloud [PDF]

open access: yes, 2011
This paper presents the first distance measurement to the massive, semi-detached, eclipsing binary LMC-SC1-105, located in the LH 81 association of the Large Magellanic Cloud (LMC).
Benedict   +31 more
core   +3 more sources

Long-distance measurement-device–independent quantum secure direct communication

open access: yesEurophysics letters, 2019
Quantum secure direct communication enables a direct message exchange over a quantum channel without any key generation in advance. Here we present a feasible protocol for long-distance measurement-device–independent quantum secure direct communication ...
Zikai Gao, Tao Li, Zhenhua Li
semanticscholar   +1 more source

Distance Measurement of a Frequency-Shifted Sub-Terahertz Wave Source

open access: yesPhotonics, 2022
In this paper, we report the development of a frequency-shifted (FS) terahertz (THz) wave source for the non-destructive inspection of buildings. Currently, terahertz-time domain spectroscopy (THz-TDS) is the mainstream method for non-destructive ...
Minoru Honjo   +3 more
doaj   +1 more source

The distance to the Vela pulsar gauged with HST parallax oservations [PDF]

open access: yes, 2001
The distance to the Vela pulsar (PSR B0833-45) has been traditionally assumed to be 500 pc. Although affected by a significant uncertainty, this value stuck to both the pulsar and the SNR. In an effort to obtain a model free distance measurement, we have
A. De Luca   +12 more
core   +2 more sources

Development of a novel wearable system for real-time measurement of the inter-foot distance during gait [PDF]

open access: yes, 2017
The combination of magneto-inertial measurement unit (MIMU) and distance sensor (DS) represents smart solution for evaluating the distance between feet during various daily-life activities. In particular, when analyzing gait, the latter technology can be
Bertuletti, Stefano   +2 more
core   +1 more source

Distance Measurement System Based on Binocular Stereo Vision

open access: yesIOP Conference Series: Earth and Environment, 2019
Binocular stereo vision uses two cameras of the same specification instead of human eyes for measurement and judgment. The basic principle of binocular vision ranging is to simultaneously capture the image of the measured object by using two left and ...
Xiyan Sun   +7 more
semanticscholar   +1 more source

A Localization Method Avoiding Flip Ambiguities for Micro-UAVs with Bounded Distance Measurement Errors [PDF]

open access: yesIEEE Transactions on Mobile Computing, 2018
Localization is a fundamental function in cooperative control of micro unmanned aerial vehicles (UAVs), but is easily affected by flip ambiguities because of measurement errors and flying motions.
Qingbei Guo   +4 more
semanticscholar   +1 more source

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