Results 11 to 20 of about 3,443,035 (308)

On the real linear polarization constant problem [PDF]

open access: yes, 2006
The present paper deals with lower bounds for the norm of products of linear forms. It has been proved by J. Arias-de-Reyna [2], that the so-called n(th) linear polarization constant c(n)(C-n) is n(n/2), for arbitrary n is an element of N. The same value
Matolcsi, Máté   +3 more
core   +2 more sources

The linear polarization constant of R^n [PDF]

open access: yes, 2005
The present work contributes to the determination of the n-th linear polarization constant cn(H) of an n-dimensional real Hilbert space H. We provide some new lower bounds on the value of supkyk=1 | hx1, yi · · · hxn, yi |, where x1, . . .
Matolcsi, Máté, Máté Matolcsi
core   +1 more source

A Compact Multiband Printed Monopole Antenna With Hybrid Polarization Radiation for GPS, LTE, and Satellite Applications

open access: yesIEEE Access, 2020
A new compact printed monopole antenna is presented in this paper. An open-loop hexagonal radiator excited by a microstrip feed line, which is printed on top of the substrate, which is FR4 type, while on another side, a partial ground plane is fixed and ...
Mohammed A. Al-Mihrab   +2 more
doaj   +1 more source

Early Exposure to Water Turbidity Affects Visual Capacities in Cuttlefish (Sepia officinalis)

open access: yesFrontiers in Physiology, 2021
In La Manche (English Channel) the level of turbidity changes, not only seasonally and daily in seawater but also along the coast. As a consequence, vision in marine species is limited when based only on contrast-intensity.
Alice Goerger   +3 more
doaj   +1 more source

Factorization and polarization in linearized gravity [PDF]

open access: yesPhysical Review D, 1995
We investigate all the four-body graviton interaction processes: $gX\rightarrow γX$, $gX\rightarrow gX$, and $gg\rightarrow gg$ with $X$ as an elementary particle of spin less than two in the context of linearized gravity except the spin-3/2 case.
Choi, S. Y., Shim, J. S., Song, H. S.
openaire   +3 more sources

Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
A new approach to controlling cross-polarization (XP), for either suppressing XP or exciting circular polarization (CP), in single-fed microstrip antennas using novel grid defected ground structures (GDGSs) is proposed.
Yujie Zhang   +4 more
doaj   +1 more source

Scattered Radiation of Protoplanetary Disks

open access: yesUniverse, 2022
Scattered radiation of circumstellar (CS) dust plays an important role in the physics of young stars. Its observational manifestations are various but more often they are connected with the appearance of intrinsic polarization in young stars and their CS
Vladimir P. Grinin   +1 more
doaj   +1 more source

A Review of Dielectric Resonator Antenna at Mm-Wave Band

open access: yesEng, 2023
This paper is a comprehensive review of the recent literature studies on the developments and applications of millimeter-wave (mm-wave) dielectric resonator antennas (DRAs).
Meshari D. Alanazi
doaj   +1 more source

Hybrid Numerical Methodology for Efficient Design and Optimization of Transmit-Array Antennas, X-Band Application

open access: yesIEEE Access, 2021
This paper presents a complete hybrid numerical methodology for the efficient design and optimization of large-scale Transmit-Array (TA) antennas for modern telecommunication applications.
Jeanne Pages-Mounic   +3 more
doaj   +1 more source

On geometry of interaction for polarized linear logic [PDF]

open access: yesMathematical Structures in Computer Science, 2017
We present Geometry of Interaction (GoI) models for Multiplicative Polarized Linear Logic, MLLP, which is the multiplicative fragment of Olivier Laurent's Polarized Linear Logic. This is done by uniformly adding multi-points to various categorical models of GoI.
Masahiro Hamano, Philip J. Scott
openaire   +4 more sources

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