Results 91 to 100 of about 471,373 (286)

Road Extraction from High-Resolution SAR Images via Automatic Local Detecting and Human-Guided Global Tracking

open access: yesInternational Journal of Antennas and Propagation, 2012
Because of existence of various kinds of disturbances, layover effects, and shadowing, it is difficult to extract road from high-resolution SAR images.
Jianghua Cheng   +3 more
doaj   +1 more source

C1 triangular Coons surface construction and image interpolation based on new Side-Side and Side-Vertex interpolation operators.

open access: yesPLoS ONE, 2020
In this paper, a new class of rational quadratic/linear trigonometric Hermite functions with two shape parameters is proposed. Based on these Hermite functions, new improved first class of Side-Side (FCSS), second class of Side-Side (SCSS), first class ...
Mingshan Qiu, Yuanpeng Zhu
doaj   +1 more source

On the center of 3-dimensional and 4-dimensional Sklyanin algebras

open access: yes, 2016
In this article, a new proof is given of the description of the center of quadratic Sklyanin algebras of global dimension three and four and the center of cubic Sklyanin algebras of global dimension three.
De Laet, Kevin
core  

The center of ${\mathcal U}_q({\mathfrak n}_\omega)$

open access: yes, 2017
We determine the center of a localization of ${\mathcal U}_q({\mathfrak n}_\omega)\subseteq {\mathcal U}^+_q({\mathfrak g})$ by the covariant elements (non-mutable elements) by means of constructions and results from quantum cluster algebras.
Jakobsen, Hans Plesner
core   +1 more source

Photoswitching Conduction in Framework Materials

open access: yesAdvanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez   +4 more
wiley   +1 more source

Analisa Peralihan Deviasi Frekuensi Sistem Kendali Frekuensi Tenaga Listrik dengan Metoda Kendali Optimal

open access: yesJurnal Rekayasa Elektrika, 2016
This journal discusses about the analysis of frequency transition deviation of power frequency control system with Optimal control methods. The response of frequency transition deviation of power frequency control system is one of indicator in the ...
Heru Dibyo Laksono
doaj   +1 more source

Limit cycles bifurcate from centers of discontinuous quadratic systems

open access: yesComputers & Mathematics with Applications, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Xingwu, Du, Zhengdong
openaire   +1 more source

Predicting Atomic Charges in MOFs by Topological Charge Equilibration

open access: yesAdvanced Functional Materials, EarlyView.
An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi   +2 more
wiley   +1 more source

Design of a quadratic filter for contrast - assisted ultrasonic imaging based on 2D gaussian filters [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2010
We present a novel design of quadratic filters (QFs) in the frequency domain in order to improve the quality of contrastassisted ultrasound images for medical diagnosis. The QF is designed as a 2D linear-phase filter.
Tosaporn Nilmanee   +1 more
doaj  

Optimal control for feedback cooling in cavityless levitated optomechanics

open access: yesNew Journal of Physics, 2019
We consider feedback cooling in a cavityless levitated optomechanics setup, and we investigate the possibility to improve the feedback implementation. We apply optimal control theory to derive the optimal feedback signal both for quadratic (parametric ...
Luca Ferialdi   +4 more
doaj   +1 more source

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