Results 41 to 50 of about 596,957 (302)

Synthesis of Reflectors Characterized by the Spatial Dispersion of the Reflection Coefficient

IEEE Open Journal of Antennas and Propagation, 2020
Planar antenna reflectors are attractive for the designs of both narrow-beam antenna arrays and frequency-scanning arrays. Planar implementation of reflectors can be performed through substrate integrated waveguide (SIW) technology.
Kirill Klionovski, Sergey E. Bankov, Atif Shamim   +2 more
doaj   +1 more source

Littlewood–Richardson coefficients for reflection groups

Advances in Mathematics, 2015
In this paper we explicitly compute all Littlewood-Richardson coefficients for semisimple or Kac-Moody groups G, that is, the structure coefficients of the cohomology algebra H^*(G/P), where P is a parabolic subgroup of G. These coefficients are of importance in enumerative geometry, algebraic combinatorics and representation theory.
Arkady Berenstein, Edward Richmond
openaire   +3 more sources

Spinal Cord Infarction Versus Idiopathic Transverse Myelitis: Clinical, Radiological, and Functional Insights From a Retrospective Cohort Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Spinal cord infarction (SCI) is a rare but devastating myelopathy, characterized by a high disability rate and an unfavorable prognosis. It has often been underdiagnosed and misdiagnosed as idiopathic transverse myelitis (ITM). This study aimed to describe the clinical features, radiological biomarkers, treatments, and functional ...
Zeqiang Ji, Jianlong Zhang, Yiming Shi, Shiyu Shan, Yang Du, Guangshuo Li, Ying Jin, Yani Zhang, Chuanying Wang, Yijun Lin, Yuhao Guo, Decai Tian, Xingquan Zhao, Tian Song   +13 more
wiley   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito, Chiara Meneghini, Alice Galli, Luca Gallo, Pierfrancesco Mitrotti, Paola Dimartino, Marianna Inglese, Cinzia Zatti, Alessandro Lupini, Andrea Pilotto, Alessandro Padovani, Micol Avenali, Enza Maria Valente, Cristina Tassorelli, Silvia P. Caminiti   +14 more
wiley   +1 more source

Super-reflection of light from a random amplifying medium with disorder in the complex refractive index : Statistics of fluctuations

, 1999
The probability distribution of the reflection coefficient for light reflected from a one-dimensional random amplifying medium with {\it cross-correlated} spatial disorder in the real and the imaginary parts of the refractive index is derived using the ...
A. K. Sen, A. Rubio, B. Doucot, B. Raghavendra Prasad, D. S. Wiersma, D. S. Wiersma, D. S. Wiersma, E. Krishna Das, E. Novikov, G. V. Vijayagovindan, H. Cao, J. C. J. Paaschens, M. Siddique, M. Siddique, N. G. van Kampen, N. Kumar, N. Kumar, N. M. Lawandy, P. Sheng, Prabhakar Pradhan, R. Rammal, S. Anantha Ramakrishna, S. John, S. Tanosaki, S. V. Frolov, V. E. Shapiro, Xunya Jiang, Z. Q. Zhang   +27 more
core   +1 more source

A microwave dielectric biosensor based on suspended distributed MEMS transmission lines [PDF]

, 2009
Design and characterization of a miniature microwave dielectric biosensor based on distributed microelectromechanical systems (MEMS) transmission lines (DMTL) is reported in this paper.
Li, Lijie, Royal Society Research (Funder), Scottish Funding Council under Glasgow Research Partnership in Engineering Scheme (Funder), Uttamchandani, Deepak   +3 more
core   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Quantitative Assessment of Wave Reflection from Oscillating Water Column Devices and Empirical Prediction of Reflection Coefficients

Journal of Marine Science and Engineering
This study experimentally investigated the wave reflection characteristics of a vertical-type OWC installed by partially removing a section of an existing rubble mound breakwater under irregular wave conditions.
Su-Young Lee, Kwang-Ho Lee
doaj   +1 more source

Low-frequency sparse double-constrained broadband seismic impedance inversion

Natural Gas Industry B, 2019
The reflection coefficient solved by using the traditional impedance inversion method cannot reflect low-frequency information sufficiently and its continuity and resolution are limited, so the quality and resolution of impedance inversion are impacted ...
Xiaotao Wen, Jixin Yang, Leihao Li, Jian He, Bo Li   +4 more
doaj   +1 more source

Delamination thickness measurement based on Stoneley wave in bilayered composite structure

Acta Acustica, 2023
Introduction: For composite structures, delamination usually occurs at the interface. Ultrasonic guided waves have been widely used to detect the delamination.
Zhou Tao, Li Ming-hang, Li Bing
doaj   +1 more source