Prediction System of Bus Arrival Time Based on Historical Data Using Regression Models

Intelligent Transportation Systems are applications of information and communication technologies aimed at improving the transportation area. Providing information about bus arrival time on the bus stop is very important and useful to passengers and transit managers. This paper presents a proposed bus arrival time prediction system at the bus stop where user is located. For this, an experimental study on bus route named Campina do Barreto No. 722 in Recife-PE, was performed by comparing the regression model for Support Vector Machine (SVR) and the neural network Extreme Learning Machine (ELM) to estimate the time it takes to go through adjacent bus stops. The experiments were performed using the bus GPS log data in the metropolitan region of Recife, and the results showed that for this application the SVR significantly outperforms ELM

A percepção do outro no ambiente virtual de aprendizagem: presença social e suas implicações para Educação a Distância

El propósito de este artículo es definir el concepto de presencia social y señalar sus repercusiones para Educación a Distancia. La presencia social es un término de la Psicología que se relaciona con la percepción del indivi - duo de cómo se siente en la interacción con los demás en la comunicación mediada por la tecnología. Estaremos presentando estudios que discutirán los desafíos para promover el aprendizaje colaborativo y la interacción en entornos virtuales y entonces, aprendizaje colaborativo. Los resultados del estudio indican que estudiar el nivel de presencia social en los entornos virtuales de aprendizaje (EVA) se vuelve crítico para comprender la inte - racción entre los aprendices y fomentar el aprendizaje colaborativo en la Educación a Distancia

A Context-sensitive Metacognitive Conflict Management Approach for Collaborative Systems

The advent of virtual and dispersed organizations increases the demand for collaborative systems and encourages research in the area of Computer Supported Cooperative Work (CSCW). Conflicts are inherent to collaborative work and can motivate reflection and interaction among stakeholders. However, current approaches to conflict management does not provide mechanisms to stimulate these processes. Moreover, only few use the context in supporting the resolution of the conflict. The aim of this work is to present a Context Sensitive Metacognitive Conflict Management (GCSC) approach for collaborative planning systems that promote reflection and interaction among stakeholders in order to improve collaboration. The approach evaluation was performed by using a prototype implementation of an ontology and an experimental study