Results 71 to 80 of about 6,203,020 (209)

Measurement of antennas and microwave components using time-domain reflectometry of a voltage impulse [PDF]

, 2011
Band-pass microwave systems such as ultra-wideband antennas are traditionally characterized in the frequency-domain through a vector network analyzer in an anechoic chamber.
Jonathan Scott, Scott, Jonathan B., Steven McCabe, McCabe, Steven Owen   +3 more
core   +1 more source

Cerebrospinal Fluid Over Plasma Links Analytes to Cognitive Decline in Older Adults at Risk for Alzheimer's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To identify inflammatory analytes in cerebrospinal fluid (CSF) and plasma associated with cognitive decline in cognitively normal (CN) older adults at risk for Alzheimer's disease (AD). Methods In a longitudinal study of 118 CN older adults (65–80 years, 54% APOE ε4, 26% preclinical AD), 1331 CSF and 1501 plasma analytes were ...
Jagan A. Pillai, Audrey Zhu, Chunxuan Ma, Ming Wang, Yifan Yang, Lynn M. Bekris, Maria Khrestian, Frank P. DiFilippo, Mikhail Nasrallah, Aaron Burberry, James B. Leverenz, Yuan Hou, Feixiong Cheng, Stephen M. Rao   +13 more
wiley   +1 more source

Mixed-signal map-configurable integrated chaos generator for digital communication systems [PDF]

, 2001
Comunicación presentada al "ECCTD’01" celebrada del 28 al 31 de Agosto del 2001 en Finlandia.In this paper, the methodological aspects for the design of mixed-signal map-configurable chaos generators are presented.
Rodríguez-Vázquez, Ángel, Rodríguez Vázquez, Ángel Benito, Delgado Restituto, Manuel , Delgado-Restituto, Manuel   +3 more
core  

On a Web-Based Oscilloscope Interface App for E-Learning: Software Architecture, Practical Applications, and User Experience

Sci
Almost two decades have passed since the development of the first (stand-alone) version of the oscilloscope simulator, known as Analogue Oscilloscope Simulator, widely utilized by thousands of Electrical and Computer Engineering (ECE) students at ...
João Ferreira, André Rocha, Mário Alves, Paulo Coelho de Oliveira   +3 more
doaj   +1 more source

Early Clinical and Cerebrospinal Fluid Predictors of 1‐Year Recurrence in Autoimmune GFAP Astrocytopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Autoimmune glial fibrillary acidic protein astrocytopathy (GFAP‐A) is an inflammatory central nervous system disorder with variable outcomes. Relapse occurs in a subset of patients, but early predictors remain unclear. We aimed to identify admission‐available features associated with 1‐year recurrence and develop an interpretable ...
Qingting Hong, Yuping Xiao, Yuhan Wu, Ziyuan Huang, Weishan Liang, Li Xiao, Yaqing Shu, Tingting Lu, Yanyu Chang, Wei Qiu, Yuge Wang   +10 more
wiley   +1 more source

A Bimorph Multi-layer Piezoelectric Vibration Energy Harvester

, 2010
This paper reports a bimorph piezoelectric vibration energy harvester incorporating multiple PZT layers. The advantage of a multi-layer generator is that it produces a higher power than a single-layer generator having the same total thickness.
Beeby, Steve, Zhu, Dibin, Almusallam, Ahmed, Harris, Nick, Tudor, John   +4 more
core   +1 more source

Small-signal stability analysis of a PMSG grid-connected system considering grid-forming energy storage

Zhejiang dianli
In large-scale grid-connected systems of permanent magnet synchronous generator （PMSG） wind farms， grid-forming energy storage （GFMES） can provide virtual inertia to enhance grid stability； however， it also makes accurate assessment of small-signal ...
LI Dongdong, LIU Yiming, ZHAO Yao, ZHONG Weilun   +3 more
doaj   +1 more source

Lyapunov Based Fast Terminal Sliding Mode Q-V Control of Grid Connected Hybrid Solar PV and Wind System

IEEE Access, 2018
This paper shows the effectiveness of adaptive terminal sliding mode control in grid connected hybrid solar PV and wind system for improvement in error tracking performance under different disturbances.
Subhendu Bikash Santra, Kundan Kumar, Pravat Biswal, Chinmoy Kumar Panigrahi   +3 more
doaj   +1 more source

A Novel KCNA1 Variant in a Patient With Tremor and Autism Spectrum Disorder Causes Mixed LOF/GOF Defects of Kv1.1 Channels

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Variants in KCNA1, encoding the Kv1.1 potassium channel, cause neurological disorders including episodic ataxia and developmental and epileptic encephalopathy. We identified a novel KCNA1 variant (A401T) in a 16‐year‐old patient with autism spectrum disorder, borderline intellectual disability, and tremor, without episodic ataxia or epilepsy ...
Juan Darío Ortigoza‐Escobar, Laura Marti‐Sánchez, Loreto Martorell, Giorgia Dinoi, Antonio Vittorio Buono, Annamaria De Luca, Antonella Liantonio, Paola Imbrici   +7 more
wiley   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source