Results 31 to 40 of about 285,292 (271)
Hybrid Modulation for Modular Voltage Source Inverters with Coupled Reactors
Energies, 2020 This paper proposes and discusses a concept of a hybrid modulation for the control of modular voltage source inverters with coupled reactors. The use of coupled reactors as the integrating elements leads to significant reduction in the size and weight of
Krzysztof Jakub Szwarc +5 more
doaj +1 more source
Efficient Implementations of Sieving and Enumeration Algorithms for Lattice-Based Cryptography
Mathematics, 2021 The security of lattice-based cryptosystems is based on solving hard lattice problems such as the shortest vector problem (SVP) and the closest vector problem (CVP).
Hami Satılmış +2 more
doaj +1 more source
Orthogonality and complementation in the lattice of subspaces of a finite vector space [PDF]
Mathematica Bohemica, 2022 We investigate the lattice $ L( V)$ of subspaces of an $m$-dimensional vector space $ V$ over a finite field ${\rm GF}(q)$ with a prime power $q=p^n$ together with the unary operation of orthogonality.
Ivan Chajda, Helmut Länger
doaj +1 more source
IEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2022 Instability and oscillation issues originating in high-voltage direct current (HVDC) systems comprising modular multilevel converters (MMCs) are gaining increasing interest in the research community.
D. del Giudice +3 more
semanticscholar +1 more source
Modular space‐vector pulse‐width modulation for nine‐switch converters [PDF]
IET Power Electronics, 2013 Recently, nine‐switch inverter (NSI) has been presented as a dual‐output inverter with constant frequency (CF) or different frequency (DF) operation modes. However, the CF mode is more interesting because of its lower switching device rating. This study proposes a new space‐vector modulation (SVM) method for the NSI that supports both the CF and DF ...
Dehghan, Seyed Mohammad +3 more
openaire +2 more sources
An approach to BPS black hole microstate counting in an N = 2 STU model
Journal of High Energy Physics, 2020 We consider four-dimensional dyonic single-center BPS black holes in the N = 2 STU model of Sen and Vafa. By working in a region of moduli space where the real part of two of the three complex scalars S, T , U are taken to be large, we evaluate the ...
G.L. Cardoso, S. Nampuri, D. Polini
doaj +1 more source
Advances in optical engineering for future telescopes
Opto-Electronic Advances, 2021 Significant optical engineering advances at the University of Arizona are being made for design, fabrication, and construction of next generation astronomical telescopes. This summary review paper focuses on the technological advances in three key areas.
Daewook Kim +10 more
doaj +1 more source
Kinematic Model and Redundant Space Analysis of 4-DOF Redundant Robot
Mathematics, 2022 The kinematics and redundant space analysis of redundant robots constitutes important research content. Currently, methods such as geometric method and iterative optimization method are relatively complicated and inconvenient for programming and ...
Yu Li, Liang Wang
doaj +1 more source
Fixed point theorems in modular vector spaces
The Journal of Nonlinear Sciences and Applications, 2017 Summary: In this work, we initiate the metric fixed point theory in modular vector spaces under Nakano formulation. In particular, we establish an analogue to Banach contraction principle, Browder and Göhde fixed point theorems for nonexpansive mappings in the modular sense.
Abdou, Afrah A. N., Khamsi, Mohamed A.
openaire +2 more sources
On some vector valued generalized difference modular sequence spaces
Filomat, 2011 In this paper we generalize the modular sequence space ?{Mk} by introducing the sequence space ?{Mk,p,q,s,?n/vm}. We give various properties relevant to algebraic and topological structures of this space and derived some other spaces.
Dutta, Hemen, KARAKAYA, Vatan
openaire +3 more sources