Results 21 to 30 of about 2,866,909 (331)

Completely Integrable Systems Associated with Classical Root Systems [PDF]

open access: yes, 2007
We study integrals of completely integrable quantum systems associated with classical root systems. We review integrals of the systems invariant under the corresponding Weyl group and as their limits we construct enough integrals of the non-invariant ...
A Schrödinger Operator, Toshio Oshima
core   +5 more sources

Experience in implementing the algorithm for emergency control system of unloading in case of overload in terms of power based on synchrophasor angle [PDF]

open access: yesE3S Web of Conferences
An algorithm for automatic unloading during a power overload is described. It is based on measurement of the phase angle between voltages on the Tyumen - Ural power transmission line, which is determined by information from phasor measurement units.
Govorun Mikhail   +5 more
doaj   +1 more source

A Novel Modular Mobile Power Flow Controller for Real-Time Congestion Management Tested on a 150kV Transmission System

open access: yesIEEE Access, 2022
Congestion issues are becoming more prevalent as the share of variable renewable energy increases. Conventional methods to mitigate them, such as building new lines, require significant lead time and upfront investment costs. Thus, alternative approaches
Konstantinos F. Krommydas   +5 more
doaj   +1 more source

Enhancing transmission and distribution system coordination and control in GB using power services from DERs

open access: yesThe Journal of Engineering, 2019
This study describes the technical principles behind the Power Potential innovation project in Great Britain (GB). The project aims to enable distributed energy resources (DERs) connected to the distribution network to provide services to the ...
Inmaculada Martínez Sanz   +5 more
doaj   +1 more source

Granger Causality Network Methods for Analyzing Cross-Border Electricity Trading between Greece, Italy, and Bulgaria

open access: yesEnergies, 2020
Italy, Greece, and, to a lesser degree, Bulgaria have experienced fast growth in their renewable generation capacity (RESc) over the last several years. The consequences of this fact include a decrease in spot wholesale prices in electricity markets and ...
George P. Papaioannou   +4 more
doaj   +1 more source

Operator arguments revisited [PDF]

open access: yes, 2019
Certain passages in Kaplan’s ‘Demonstratives’ are often taken to show that non-vacuous sentential operators associated with a certain parameter of sentential truth require a corresponding relativism concerning assertoric contents: namely, their truth ...
Fritz, Peter   +2 more
core   +1 more source

Scalability and replicability analysis of smart grid projects: Insights from the H2020 CROSSBOW project

open access: yesFrontiers in Energy Research, 2023
The scalability and replicability analysis (SRA) is usually performed for Smart Grid Architecture Model (SGAM) projects to assess the applicability of proposed solutions in various regions, conditions, densities, and sizes.
Despoina I. Makrygiorgou   +7 more
doaj   +1 more source

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

Operative hysteroscopy

open access: yesInternational Journal of Gynecology & Obstetrics, 1993
AbstractOBJECTIVE: Analysis of the obtained results after operative hysteroscopy for several intrauterine abnormalities. METHOD: Thirty women with uterine problems (7 polyps, 16 endometrial, 5 endocervical adhesions and 2 lost IUDs) were submitted to operative hysteroscopy under general anesthesia by using fine rigid auxiliary instruments at Lito ...
PREVEDOURAKIS, C   +3 more
openaire   +3 more sources

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

Home - About - Disclaimer - Privacy