Results 31 to 40 of about 374,552 (274)

Boolean independent sequences and Bourgain-Rosenthal’s theorem (in Ukrainian) [PDF]

open access: yesМатематичні Студії, 2012
A property of boolean independent sequences of pairs of sets is obtained. This completes the proof of Bourgain-Rosenthal's theorem on narrow operators.
V. V. Mykhaylyuk
doaj  

Daugavet centers are separably determined [PDF]

open access: yesМатематичні Студії, 2013
A linear bounded operator $G$ acting from a~Banach space $X$ intoa~Banach space $Y$ is a~Daugavet center if every linear boundedrank-$1$ operator $Tcolon X o Y$ fulfills$|G+T|=|G|+|T|$.
T. Ivashyna
doaj  

Data assimilation for volcanic ash plumes using a satellite observational operator: a case study on the 2010 Eyjafjallajökull volcanic eruption [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Using data assimilation (DA) to improve model forecast accuracy is a powerful approach that requires available observations. Infrared satellite measurements of volcanic ash mass loadings are often used as input observations for the assimilation scheme ...
G. Fu   +5 more
doaj   +1 more source

Air Force Pilot Expertise Assessment during Unusual Attitude Recovery Flight

open access: yesSafety, 2022
Pilot training and expertise are key aspects in aviation. A traditional way of evaluating pilot expertise is to measure performance output. However, this approach provides a narrow view of the pilot’s capacity, especially with regard to mental and ...
Gianluca Borghini   +11 more
doaj   +1 more source

A note on operators from Kothe function spaces to $c_0(\Gamma)$

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
It is well known that every operator from $E = L_p$, $1 \leq p <\infty$ to $c_0$ is narrow. We show that this result can be extended to a more general class of Kothe function spaces $E$.
I. V. Krasikova, M. M. Popov
doaj   +1 more source

Accounting for Azimuthal Coupling in Long-Range Ocean Acoustics Calculations

open access: yesIEEE Access, 2023
The parabolic equation method is an accurate and efficient approach for solving nonseparable problems in ocean acoustics in which there are horizontal variations in the environmental parameters.
John Y. Yoritomo   +3 more
doaj   +1 more source

Time of arrival in the presence of interactions [PDF]

open access: yes, 2000
We introduce a formalism for the calculation of the time of arrival t at a space point for particles traveling through interacting media. We develop a general formulation that employs quantum canonical transformations from the free to the interacting ...
A. M. Steinberg   +39 more
core   +3 more sources

Identifying Equipment Factors Associated with Snowplow Operator Fatigue

open access: yesSafety, 2019
A recent body of research in fatigue management indicates that other factors, including in-cab and external equipment, contribute to operator fatigue. The goal of this project was to identify winter road maintenance equipment (in-cab and external) that ...
Matthew C. Camden   +3 more
doaj   +1 more source

SIGNIFICANT WAVE HEIGHT DETERMINED FROM SEQUENCE OF X-BAND RADAR IMAGES USING TEAGER-HUANG TRANSFORM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
This work introduces a nonlinear and data-dependant method for extracting the significant wave height from a sequence of X-band radar images, which is based on the Teager-Huang Transform (THH).
M. R. Mortazavi, C. J. Huang, L. C. Wu
doaj   +1 more source

A Perspective on Pentaquarks

open access: yes, 2004
Recent discoveries of manifestly exotic, narrow baryon resonances present a fundamental challenge for our theoretical understanding of low-energy QCD. This is a brief survey of their interpretation, emphasizing the possibility that diquark correlations ...
Jaffe, Robert, Wilczek, Frank
core   +1 more source

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