Výsledky vyhledávání - "D. A. Georgiou"

Akademický článek

Oscillation criteria in neutral equations of n order with variable coefficients

Autor: D. A. Georgiou, C. Qian

Publikováno v: International Journal of Mathematics and Mathematical Sciences, Vol 14, Iss 4, Pp 689-696 (1991)

Consider the n-order neutral delay differential equation dndtn[y(t)+P(t)y(t−τ)]+Q(t)y(t−σ)=0 where P,Q∈C[[t0,∞),ℝ] and the delays τ and σ are nonnegative real numbers. In this paper we examined the oscillatory behavior of the solutions

Externí odkaz: https://doaj.org/article/642265d4062b4db496dbae96d2066b5f

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Akademický článek

Soft set theory and topology

Autor: D. N. Georgiou, A. C. Megaritis

Publikováno v: Applied General Topology, Vol 15, Iss 1, Pp 93-109 (2014)

In this paper we study and discuss the soft set theory giving new definitions, examples, new classes of soft sets, and properties for mappings between different classes of soft sets. Furthermore, we investigate the theory of soft topological spaces a

Externí odkaz: https://doaj.org/article/59f766b674b84364b7cba2fa12217b2d

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EFFECT OF GALLERIES ON THE WIND FLOW STRUCTURE AND POLLUTANT TRANSPORT WITHIN STREET CANYONS WITH OR WITHOUT FACADE ROUGHNESS ELEMENTS (BALCONIES)

Autor: D. P. Georgiou, P. E. Marazioti, V. A. Karkoulias, E. A. Maraziotis

Publikováno v: International Journal of Engineering Technologies and Management Research. 7:45-59

This paper investigates how the structure of the flow field and the vertical distribution of the pollutant concentration near the wall facades of street canyons are affected by the presence of some elements such as street level galleries. Numerical r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92739dcc5b68278f22920dc08b311d6d
https://doi.org/10.29121/ijetmr.v7.i12.2020.835

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Oxidative C-H Homocoupling of Push-Pull Benzothiazoles: An Atom-Economical Route to Highly Emissive Quadrupolar Arylamine-Functionalized 2,2'-Bibenzothiazoles with Enhanced Two-Photon Absorption

Autor: Róbert Gyepes, Jela Nociarová, Ioannis Polyzos, Mihalis Fakis, Maroš Smolíček, D. N. Georgiou, Patrik Osuský, Peter Hrobárik

Publikováno v: Organic Letters

Copper(II)-catalyzed C–H/C–H coupling of dipolar 2-H-benzothiazoles end-capped with triphenylamine moieties affords highly fluorescent 2,2′-bibenzothiazoles with quadrupolar (D-π-A-π-D) architecture displaying large two-photon absorption (TPA

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d71261da3f749752a350756229eb5ac1
https://pubmed.ncbi.nlm.nih.gov/34233116

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Akademický článek

On Cauchy problems for fuzzy differential equations

Autor: D. N. Georgiou, I. E. Kougias

Publikováno v: International Journal of Mathematics and Mathematical Sciences, Vol 2004, Iss 15, Pp 799-805 (2004)

Existence and uniqueness theorems are proved for Cauchy problems of second-order fuzzy differential equations.

Externí odkaz: https://doaj.org/article/1952d3a1e5444f7d9a71fc38d742f640

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Universality Property and Dimension for Frames

Autor: F. Sereti, A.C. Megaritis, D. N. Georgiou, Stavros Iliadis

Publikováno v: Order. 37:427-444

The universality property plays an important role in the field of frames and the notion of saturated class of frames is combined with this property (see Dube et al. (Topology and its Applications 160, 2454–2464, 2013); Iliadis (Topology and its App

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c08778457dfeb8fdf0ab84bd4e43d25
https://doi.org/10.1007/s11083-019-09513-3

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Akademický článek

Bounded solutions for fuzzy integral equations

Autor: D. N. Georgiou, I. E. Kougias

Publikováno v: International Journal of Mathematics and Mathematical Sciences, Vol 31, Iss 2, Pp 109-114 (2002)

We study conditions under which the solutions of a fuzzy integral equation are bounded.

Externí odkaz: https://doaj.org/article/0ff376d1cd254e98a2679390d4526ee1

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Direct Iodination of Electron-Deficient Benzothiazoles: Rapid Access to Two-Photon Absorbing Fluorophores with Quadrupolar D-π-A-π-D Architecture and Tunable Heteroaromatic Core

Autor: Patrik Osuský, Mihalis Fakis, Ioannis Polyzos, Peter Hrobárik, Erik Rakovský, Jela Nociarová, D. N. Georgiou

Publikováno v: Organic Letters

Direct iodination of benzothiazoles under strong oxidative/acidic conditions leads to a mixture of iodinated heteroarenes with 1–2 major components, which are easily separable and which structures depend on the I2 equivalents used. Among the unexpe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4434ea2a1edaddaa0f8aa0d84a72c50e
https://pubmed.ncbi.nlm.nih.gov/33886341

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Effect of protonation on the photophysical properties of 4-substituted and 4,7-disubstituted quinazoline push-pull chromophores

Autor: Arnaud Fihey, Claudine Katan, Françoise Robin-le Guen, Julián Rodríguez-López, Rodrigo Plaza-Pedroche, Sylvain Achelle, D. N. Georgiou, Mihalis Fakis

Publikováno v: Dyes and Pigments
Dyes and Pigments, 2021, 185 (Part B), pp.108948. ⟨10.1016/j.dyepig.2020.108948⟩
Dyes and Pigments, Elsevier, 2021, 185 (Part B), pp.108948. ⟨10.1016/j.dyepig.2020.108948⟩

International audience; White-light emission from single molecular systems has attracted a great deal of attention due to their advantages over multicomponent emitters. Azaheterocyclic push-pull derivatives have been demonstrated to be white emitters

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39b30e89a317919b815efb988b58a146
https://univ-rennes.hal.science/hal-02978142

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