Results 31 to 40 of about 178,348 (364)

Commutant lifting for commuting row contractions [PDF]

open access: yesBulletin of the London Mathematical Society, 2010
one section and references were ...
Davidson, Kenneth R., Le, Trieu
openaire   +2 more sources

Ways to improve the application of early release from serving a sentence [PDF]

open access: yesПенитенциарная наука, 2023
Introduction: the article discusses and analyzes ways to improve the complex institution of long-term release from serving a sentence as an important means to promote law-abiding behavior of convicts. A large number of petitions for the application of
Brilliantov A.V., Babayan S.L.
doaj   +1 more source

Research on Vacuum Arc Commutation Characteristics of a Natural-Commutate Hybrid DC Circuit Breaker

open access: yesEnergies, 2020
Vacuum arc commutation is an important process in natural-commutate hybrid direct current (DC) circuit breaker (NHCB) interruption, as the duration of vacuum arc commutation will directly affect the arcing time and interrupting time of NHCB.
Dequan Wang   +7 more
doaj   +1 more source

A Suppression Strategy for Subsequent Commutation Failures Considering Commutation Capability of Recovery Process

open access: yesShanghai Jiaotong Daxue xuebao, 2022
In order to suppress subsequent commutation failures of high voltage direct current (HVDC), the dynamic process of electrical and control quantities during system recovery is studied, and the main reason for subsequent commutation failures is proposed in
CONG Xinpeng, ZHENG Xiaodong, CAO Yaqian, TAI Nengling, MIAO Yuancheng, LI Ke
doaj   +1 more source

Counting Commutators [PDF]

open access: yesTransactions of the American Mathematical Society, 1974
Let G be a group generated by x and y, G 2 {G_2} be the commutator subgroup of G, and G 1 {G_1} be the group generated by y and G 2 {G_2} . This paper contains explicit expansions of
openaire   +2 more sources

Procedure analysis of UHVDC commutation failure

open access: yesThe Journal of Engineering, 2019
There may be a commutation failure during a fault or start-up of the UHVDC inverter side. The law of commutation failure process in UHVDC converter is studied here. First, the cause of inverter commutation failures is briefly introduced.
Chenqing Wang   +4 more
doaj   +1 more source

Multiple commutator formulas [PDF]

open access: yesIsrael Journal of Mathematics, 2012
Let A be a quasi-finite R-algebra (i.e., a direct limit of module finite algebras) with identity. Let I_i, i=0,...,m, be two-sided ideals of A, \GL_n(A,I_i) the principal congruence subgroup of level I_i in GL_n(A) and E_n(A,I_i) be the relative elementary subgroup of level I_i.
Hazrat, Roozbeh (R16959), Zhang, Zuhong
openaire   +4 more sources

Two-channel microwave power switch construction on the basis of electrically active semiconductor structures

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014
When constructing the fast-acting two-channel microwave switch, it is difficult to use p–i–n-diodes due to inertia of processes in such structures at change of control voltage polarity for providing of deep modulation.
Yu. N. Lavrich   +4 more
doaj   +1 more source

ON THE COMMUTATION MATRIX

open access: yesBarekeng, 2023
The commutation matrix is a matrix that transforms any vec matrix , to vec transpose . In this article, three definitions of the commutation matrix are presented in different ways. It is shown that these three definitions are equivalent.
Yanita Yanita, Lyra Yulianti
doaj   +1 more source

A practical approach to switching-loss reduction in a large-capacity static VAr compensator based on voltage-source inverters [PDF]

open access: yes, 2000
This paper presents a simple method for reduction of switching and snubbing losses in a large-capacity static VAr compensator (SVC) consisting of multiple three-phase voltage-source square-wave inverters.
Akagi, Hirofumi   +2 more
core   +1 more source

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