A teachable-agent arithmetic game is presented and evaluated in terms of student performance, attitude and self-efficacy. An experimental prepost study design was used, enrolling 153 3 and 5 grade students in Sweden. The playing group showed significantly larger gains in math performance and self-efficacy beliefs, but not in general attitude towards math, compared to control groups. The contrib...

A multi-dimensional linear predictor of 9-1-1 (emergency) call volumes was built and used to automatically detect emergency events. This is illustrated by analyzing the emergency calls generated in two emergency events in the San Francisco Bay Area. The predictor can help emergency service providers recognize the occurrence of anomalously large numbers of 9-1-1 calls and subsequently map the sp...

The majority of currently available branch predictors base their prediction accuracy on the previous k branch outcomes. Such predictors sustain high prediction accuracy but they do not consider the impact of unbiased branches which are difficult-to-predict. In this paper, we quantify and evaluate the impact of unbiased branches and show that any gain in prediction accuracy is proportional to th...

The h-index has been shown to have predictive power. Here I report results of an empirical study showing that the increase of the h-index with time often depends for a long time on citations to rather old publications. This inert behavior of the h-index means that it is difficult to use it as a measure for predicting future scientific output. 1. Introduction The Hirsch index or h-index of a res...

This paper deals with network controlled systems. A state predictor is used to stabilize such system as in [1], [2]. The full characterization of the prediction horizon is provided, which allows to prove the stability of the closed-loop system with the state predictor (using an estimated horizon).

Predictor-corrector (PC) methods for the numerical solution of stiff ODEs can be extended to include the second derivative of the solution. In this paper, we consider second derivative PC methods with the three-step second derivative Adams-Bashforth as predictor and two-step second derivative Adams-Moulton as corrector which both methods have order six. Implementation of the proposed PC method ...