Results 101 to 110 of about 257,949 (316)

Asymptotics of Asynchronicity [PDF]

open access: yes, 2011
In this article we focus on estimating the quadratic covariation of continuous semimartingales from discrete observations that take place at asynchronous observation times. The Hayashi-Yoshida estimator serves as synchronized realized covolatility for that we give our own distinct illustration based on an iterative synchronization algorithm.
openaire   +3 more sources

Harnessing Phase Separation for the Development of High‐Performance Hydrogels

open access: yesAdvanced Science, EarlyView.
ABSTRACT Hydrogels are indispensable for the development of next‐generation bioelectronics, soft robotics, and biomedical devices, where their mechanical properties determine performance and reliability. Among strategies to enhance hydrogel mechanics, phase separation enables controlled heterogeneity resulting in gel networks that are reinforced by ...
Yue Shao   +3 more
wiley   +1 more source

Transition Systems with Independence and Multi-Arcs [PDF]

open access: yes, 1997
We extend the model of transition systems with independence in order to provide it with a feature relevant in the noninterleaving analysis of concurrent systems, namely multi-arcs.
Thomas Troels Hildebrandt   +4 more
core   +1 more source

Speaking Practice Outside the Classroom: A Literature Review of Asynchronous Multimedia-based Oral Communication in Language Learning

open access: yesThe EUROCALL Review, 2018
Classroom instruction provides a limited amount of quality speaking practice for language learners. Asynchronous multimedia-based oral communication is one way to provide learners with quality speaking practice outside of class.
Eric H. Young, Rick E. West
doaj   +1 more source

Online Learning: Practices, Perceptions, and Technology

open access: yesCanadian Journal of Learning and Technology, 2020
The purpose of this study was to examine factors influencing online learning given its rapid growth combined with the necessity to reduce attrition in online classes by providing quality instruction. This study was contextualized using the three elements
Tess Miller, Kendra MacLaren, Han Xu
doaj   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

open access: yesAdvanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen   +9 more
wiley   +1 more source

An exploration of the effects of synchronous and asynchronous learning activities on student nurse experience during the Covid-19 pandemic

open access: yesEducational Futures, 2022
The COVID-19 pandemic has presented a significant disruption to the Higher Education sector. This has been particularly evident within health and social care education, with the added need for both students and educators to support the frontline ...
Amanda Turner, Elizabeth Wheatley
doaj  

WS2 Optoelectronic Memristive Reservoir Enabling Ultra‐Low‐Power, Multi‐Task, and Environmentally Stable Neuromorphic Computing

open access: yesAdvanced Science, EarlyView.
WS2‐based in‐memory sensing reservoir computing integrates sensing, memory, and computation in one compact device. It achieves ∼94% N‐MNIST, ∼93% eye motion perception, and ∼89% speech recognition with ultra‐low energy (∼25.5 fJ/spike). The system shows stability at 95% humidity, endurance over 1.5M cycles, and supports synaptic plasticity, enabling ...
Dayanand Kumar   +9 more
wiley   +1 more source

Precise BER Formulas for Asynchronous QPSK-Modulated DS-CDMA Systems Using Random Quaternary Spreading Over Rayleigh Channels [PDF]

open access: yes, 2008
Precise bit-error-ratio (BER) analysis of an asynchronous QPSK-modulated direct-sequence code-division multiple-access system using random quaternary spreading sequences for transmission over Rayleigh channels is performed based on the characteristic ...
Liu, X, Hanzo, L
core  

A low-power asynchronous VLSI FIR filter [PDF]

open access: yes, 2001
An asynchronous FIR filter, based on a Single Bit-Plane architecture with a data-dependent, dynamic-logic implementation, is presented. Its energy consumption and sample computation delay are shown to correlate approximately linearly with the total ...
Grass, E.   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy