Results 21 to 30 of about 1,605,869 (375)

Quasi-Upward Planarity [PDF]

open access: yesAlgorithmica, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
PAOLA BERTOLAZZI   +2 more
openaire   +11 more sources

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

Obtaining raised density connections by thermosonic microwelding in 3D integrated microcircuits

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014
The authors consider the processes of obtaining raised density microwelded connections in 3D-integrated microcircuits by the thermosonic microwelding.
V. L. Lanin, I. B. Petuhov
doaj   +1 more source

Ideal based hypergraph of a commutative ring

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
Let R be a commutative ring and k an integer strictly greater than 2. The k-maximal ideal hypergraph to R with vertex set the set of all k-maximal ideals in R and for distinct ideals I1, in the set is an edge of if and only if and the sum of any elements
V. C. Amritha, K. Selvakumar
doaj   +1 more source

A correspondence between rooted planar maps and normal planar lambda terms [PDF]

open access: yes, 2015
A rooted planar map is a connected graph embedded in the 2-sphere, with one edge marked and assigned an orientation. A term of the pure lambda calculus is said to be linear if every variable is used exactly once, normal if it contains no beta-redexes ...
Giorgetti, Alain, Zeilberger, Noam
core   +5 more sources

Fitting Planar Graphs on Planar Maps [PDF]

open access: yesJournal of Graph Algorithms and Applications, 2014
Graph and cartographic visualization have the common objective to provide intuitive understanding of some underlying data. We consider a problem that combines aspects of both by studying the problem of fitting planar graphs on planar maps. After providing an NP-hardness result for the general decision problem, we identify sufficient conditions so ...
Tamara Mchedlidze   +3 more
openaire   +3 more sources

Planar Four-Port Dual Circularly-Polarized MIMO Antenna for Sub-6 GHz Band

open access: yesIEEE Access, 2020
In this work, two configurations (Config.-A and Config.-B) of planar four-port dual circularly-polarized (CP) multiple-input-multiple-output (MIMO) antenna are proposed for sub-6 GHz (3.4-3.8 GHz) applications.
Shobhit Saxena   +5 more
doaj   +1 more source

On the Genus of the Idempotent Graph of a Finite Commutative Ring

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2021
Let R be a finite commutative ring with identity. The idempotent graph of R is the simple undirected graph I(R) with vertex set, the set of all nontrivial idempotents of R and two distinct vertices x and y are adjacent if and only if xy = 0.
Belsi G. Gold, Kavitha S., Selvakumar K.
doaj   +1 more source

Broadband Compact Quasi Yagi Antenna for UHF Wireless Communication Systems with Enhanced Performance at UHF ISM Bands [PDF]

open access: yesRadioengineering, 2020
In this study, a broadband planar quasi Yagi antenna operated at ultra-high frequency (UHF) band is presented. The performance of the antenna is particularly improved for two popular UHF frequencies of 433 and 868 MHz used in several wireless ...
Y. Bakirli, A. Selek, M. Secmen
doaj  

Applying the Czédli-Schmidt Sequences to Congruence Properties of Planar Semimodular Lattices

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2021
Following Grätzer and Knapp, 2009, a planar semimodular lattice L is rectangular, if the left boundary chain has exactly one doubly-irreducible element, cl, and the right boundary chain has exactly one doubly-irreducible element, cr, and these elements ...
Grätzer G.
doaj   +1 more source

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