Results 11 to 20 of about 3,121,689 (316)

Operational Phase Operators and Hermitian Phase Operators [PDF]

open access: yesProgress of Theoretical Physics, 2003
Summary: It is shown that there exist two kinds of operational (or measured) phase operators, those of the Hradil type [\textit{Z. Hradil}, Phys. Rev. A 47, 4532--4534 (1993)] defined on the entire Hilbert space, and those of the Noh-Fougères-Mandel type [\textit{J. W. Noh, A. Fougères} and \textit{L. Mandel}, Phys. Rev.
openaire   +2 more sources

The operation $ABA$ in operator algebras [PDF]

open access: yesCommentationes Mathematicae Universitatis Carolinae, 2021
Summary: The binary operation \(aba\), called Jordan triple product, and its variants (such as e.g. the sequential product \(\sqrt{a}b\sqrt{a}\) or the inverted Jordan triple product \(ab^{-1}a\)) appear in several branches of operator theory and matrix analysis. In this paper we briefly survey some analytic and algebraic properties of these operations,
openaire   +3 more sources

Towards Integrated Digital Twins for Industrial Products: Case Study on an Overhead Crane

open access: yesApplied Sciences, 2021
Industrial Internet of Things practitioners are adopting the concept of digital twins at an accelerating pace. The features of digital twins range from simulation and analysis to real-time sensor data and system integration.
Juuso Autiosalo   +5 more
doaj   +1 more source

LOW TEMPERATURES EFFECT ON THERMAL CONDITIONS OF DZ-98 AUTOGRADER HYDRAULIC UNITS

open access: yesВестник СибАДИ, 2020
Introduction. The article discusses the climatic conditions of Yakutia, as well as the cooling process of the hydraulic system of DZ-98 motor grader in order to prevent violation of the thermal regime of hydraulic units under the influence of low ...
T. N. Okhlopkov
doaj   +1 more source

Operator Ideals and Operator Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1995
We prove that every full symmetrically normed ideal of operators on a Hilbert space is realizable as the set of completely bounded maps between two homogeneous operator Hilbert spaces, with the c.b. norm equivalent to (but in general not equal to) the symmetric norm. We show that one can have equality of the c.b.
Mathes, D. Benjamin, Paulsen, Vern I.
openaire   +1 more source

Operation Market Garden [PDF]

open access: yes, 2021
A virtual account of the conception, execution and controversy surrounding Operation Market Garden - depicted in the film 'A Bridge Too Far', a spectacular but failed attempt to finish the war in Europe in 1944.
Watts, M.
core  

Design and Fabrication of S-Band Diplexer for LEO TT&C Application [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2007
Diplexer is one of core devices needed to communicate with satellite using single ground antenna by separating uplink and downlink signal. This paper presents the design of the S-band diplexer for LEO TT&C application, especially for KOMPSAT (KOrea Multi-
Sang-Il Ahn, Dong-Chul Park
doaj   +1 more source

Electrospun Metal Oxide Nanofibers and Their Conductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations

open access: yesNanomaterials, 2021
Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications.
Ghenadii Korotcenkov
doaj   +1 more source

Trends in process systems engineering [PDF]

open access: yesModeling, Identification and Control, 1994
(No abstract)
John Perkins
doaj   +1 more source

Impact of Postoperative Radiotherapy on Survival of Patients With de novo Stage IV Breast Cancer: A Population-Based Study From the SEER Database

open access: yesFrontiers in Oncology, 2021
Purpose: In our study, we aimed to evaluate the role of postoperative radiotherapy for patents with de novo stage IV breast cancer.Patients and Methods: Patients diagnosed with stage IV breast cancer from 2010 to 2016 were selected from the Surveillance,
Jie Zhang   +9 more
doaj   +1 more source

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