Results 41 to 50 of about 84,223 (255)

Financial correlations at ultra-high frequency: theoretical models and empirical estimation

open access: yes, 2011
A detailed analysis of correlation between stock returns at high frequency is compared with simple models of random walks. We focus in particular on the dependence of correlations on time scales - the so-called Epps effect.
A. Lo   +24 more
core   +2 more sources

Students and Teachers Using Mentimeter: Technological Innovation to Face the Challenges of the COVID-19 Pandemic and Post-Pandemic in Higher Education

open access: yesEducation Sciences, 2021
The COVID-19 pandemic has prompted higher university lecturers to develop their digital skills in order to adapt to online teaching. A group of university teachers decided to evaluate the educational uses of Mentimeter to promote student participation ...
J. Ignacio Pichardo   +12 more
doaj   +1 more source

Simple Synchronous and Asynchronous Algorithms for Distributed Minimax Optimization

open access: yesSICE Journal of Control, Measurement, and System Integration, 2017
Synchronous and asynchronous algorithms are presented for distributed minimax optimization. The objective here is to realize the minimization of the maximum of component functions over the standard multi-agent network, where each node of the network ...
Kenta Hanada   +3 more
doaj   +1 more source

Maharah al-Qira'ah Learning Model through Edmodo at Department of Arabic Language Education, Imam Bonjol State Islamic University, Padang

open access: yesArabiyatuna: Jurnal Bahasa Arab, 2021
This study aims to determine the validity of Maharatul Qira'ah learning model design by utilizing Edmodo e-learning application, and to describe the learning model and its impact on student participation.
Neli Putri, R. Rahmawati, H. Hanomi
doaj   +1 more source

Reduced audiovisual recalibration in the elderly

open access: yesFrontiers in Aging Neuroscience, 2014
Perceived synchrony of visual and auditory signals can be altered by exposure to a stream of temporally offset stimulus pairs. Previous literature suggests that adapting to audiovisual temporal offsets is an important recalibration to correctly combine ...
Yu Man eChan   +2 more
doaj   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS 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

Synaptotagmin-1 is the Ca2+ sensor for fast striatal dopamine release

open access: yeseLife, 2020
Dopamine powerfully controls neural circuits through neuromodulation. In the vertebrate striatum, dopamine adjusts cellular functions to regulate behaviors across broad time scales, but how the dopamine secretory system is built to support fast and slow ...
Aditi Banerjee   +4 more
doaj   +1 more source

Effect of Implementing a Dashboard With or Without a Best Practice Alert on HLA‐B*58:01 Testing Rates Among Allopurinol Users at VA Medical Centers

open access: yesArthritis Care &Research, EarlyView.
Objective The American College of Rheumatology recommends HLA‐B*58:01 allele testing before the initiation of allopurinol, specifically among Asian and African American/Black patients, due to their increased risk for severe hypersensitivity reactions. However, testing rates remain low at many health care facilities.
Abimbola Fadairo‐Azinge   +6 more
wiley   +1 more source

The Development of Social Climate in Virtual Learning Discussion Groups

open access: yesInternational Review of Research in Open and Distributed Learning, 2002
As the educational use of computer mediated communication (CMC) increases there is growing interest among researchers as to social processes evolving within the varied models of group work using Internet – e.g., special interest groups, topical ...
Avigail Oren   +2 more
doaj   +3 more sources

Design and Application of a Distribution Network Phasor Data Concentrator

open access: yesApplied Sciences, 2020
The wide area measurement system (WAMS) based on synchronous phasor measurement technology has been widely used in power transmission grids to achieve dynamic monitoring and control of the power grid.
Weiqing Tao   +6 more
doaj   +1 more source

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