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10 papers · 1 filter
Impact of Social Relationships on Peer Assessment in E-Learning
Francisco Sousa, Tomás Alves, Sandra Gama +2
Peer assessment has been widely studied as a replacement for traditional evaluation, not only by reducing the professors' workload but mainly by benefiting students' engagement and…
Vertical CNT-Si Photodiode Array
Arman Ahnood, Hang Zhou, Qing Dai +5
A photodiode consisting of nanopillars of thin-film silicon p-i-n on an array of vertically aligned carbon nanotubes (CNTs) with a noncontinuous cathode electrode is demonstrated.…
Neural network sampling of Bethe-Heitler process in particle-in-cell codes
Óscar Amaro, Chiara Badiali, Bertrand Martinez
This study uses neural networks to improve Monte Carlo (MC) implementations of the Bethe-Heitler process in Particle-In-Cell (PIC) codes. We provide a neural network that is as acc…
Evolving efficiency of the BRICS markets
Maria V. Kulikova, David R. Taylor, Gennady Yu. Kulikov
This paper investigates a time-varying version of weak-form market efficiency in the BRICS countries. A moving window test for sample autocorrelations is applied alongside a Kalman…
Continuous-discrete derivative-free extended Kalman filter based on Euler-Maruyama and Itô-Taylor discretizations: Conventional and square-root implementations
Maria V. Kulikova, Gennady Yu. Kulikov
In this paper, we continue to study the derivative-free extended Kalman filtering (DF-EKF) framework for state estimation of continuous-discrete nonlinear stochastic systems. Havin…
Sharp blow-up stability for self-similar solutions of the modified Korteweg-de Vries equation
Simão Correia, Raphaël Côte
We consider the modified Korteweg-de Vries equation. Given a self-similar solution, and a subcritical perturbation of any size, we prove that there exists a unique solution to the…