Results 41 to 50 of about 251,238 (344)

Directed replacement [PDF]

Proceedings of the 34th annual meeting on Association for Computational Linguistics -, 1996
This paper introduces to the finite-state calculus a family of directed replace operators. In contrast to the simple replace expression, UPPER -> LOWER, defined in Karttunen (ACL-95), the new directed version, UPPER @-> LOWER, yields an unambiguous transducer if the lower language consists of a single string.
openaire   +2 more sources

Directive Emission from Defect-Free Dodecagonal Photonic Quasicrystals: A Leaky-Wave Characterization [PDF]

, 2009
In this paper, we study the radiation from embedded sources in two-dimensional finite-size "photonic-quasicrystal" (PQC) slabs made of dielectric rods arranged according to a 12-fold symmetric aperiodic tiling.
Capolino, Filippo, Della Villa, Alessandro, Enoch, Stefan, Galdi, Vincenzo, Micco, Alessandro, Pierro, Vincenzo, Tayeb, Gerard   +6 more
core   +3 more sources

Design and Fabrication of a Low-Cost, Multiband and High Gain Square Tooth-Enabled Metamaterial Superstrate Microstrip Patch Antenna

Micromachines, 2023
The manuscript represents a novel square tooth-enabled superstrate metamaterial loaded microstrip patch antenna for the multiple frequency band operation. The proposed tooth-based metamaterial antenna provides better gain and directivity.
Khaled Aliqab, Sunil Lavadiya, Meshari Alsharari, Ammar Armghan, Malek G. Daher, Shobhit K. Patel   +5 more
doaj   +1 more source

Genetic Algorithm Optimization of a High-Directivity Microstrip Patch Antenna Having a Rectangular Profile [PDF]

, 2013
A single high-directivity microstrip patch antenna (MPA) having a rectangular profile, which can substitute a linear array is proposed. It is designed by using genetic algorithms with the advantage of not requiring a feeding network.
Anguera, J., Jayasinghe, J.W., Uduwawala, D. N.   +2 more
core  

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Electrically Small Supergain Arrays

, 2007
The theory, computer simulations, and experimental measurements are presented for electrically small two-element supergain arrays with near optimal endfire gains of 7 dB.
A. D. Yaghjian, Altshuler, Altshuler, Altshuler, Azadegan, Balanis, Bayraktar, Best, Best, Best, Best, Bloch, Bloch, Bouwkamp, Brown, Buell, Dobbins, E. E. Altshuler, Fujimoto, Hansen, Harrington, Haviland, Karlsson, Kraus, Lancaster, Lim, Lim, Lim, Lin, Miron, Montrose, Newman, Oseen, Riblet, S. R. Best, T. H. O'Donnell, Uzkov, Walkinshaw, Wheeler, Wheeler, Yaghjian, Yaghjian, Yaru, Yoshida   +43 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Investigation of the influence of the torso, lips and vocal tract configuration on speech directivity using measurements from a custom head and torso simulator

Acta Acustica, 2023
The human voice is a directional sound source. This property has been explored for more than 200 years, mainly using measurements of human participants. Some efforts have been made to understand the anatomical parameters that influence speech directivity,
Blandin Rémi, Geng Jingyan, Birkholz Peter   +2 more
doaj   +1 more source

Radiated Immunity Testing of a Device with an External Wire: Repeatibility of Reverberation Chamber Results and Correlation with Anechoic Chamber Results [PDF]

, 2003
We present the experimental radiated immunity results of an electronic device with an external wire obtained in reverberation and anechoic chambers. Repeatability and reproducibility of reverberation chamber measurements are investigated by repeating the
Berat, V., Canavero, Flavio, Demoulin, B., Musso, L.   +3 more
core   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source