IMUTUS (Interactive Music Tuition System) is a EU project that aims to develop a practising environment for the recorder, combining new technologies and new approaches for music learning. Automatic analysis and evaluation of student performances play a central role in the student-system interaction. The performance evaluation module identifies typical performance errors, and provides feedback t...

Recent years have witnessed successful real-world deployments of wireless sensor networks (WSNs) in a wide range of civil and military applications. Sensing coverage and network connectivity are two of the most fundamental issues to ensure effective environmental sensing and robust data communication in a WSN application. This chapter presents fundamental studies on the sensing coverage and the...

In this paper, we study the single-packet medium access problem, which occurs in many wireless sensor network applications. In this problem, each contending node in the onehop network has a single packet to transmit and the node is in contention of the channel only until its packet is transmitted. We analyze the performance of slotted multi-access techniques for this problem using Markov chains...

We investigate an effective and robust mechanism for detecting SMTP traffic anomaly. Our detection method cumulates the deviation of current delivering status from history behavior based on the leaky integrate-and-fire model to detect anomaly. The simplicity of our detection method is that the method requires neither the set of anomalies to be detected, nor the thresholds to be supplied by the ...

This paper presents a framework for the development of formal concept analysis (FCA) algorithms. Its main component is a synthetic generator which formal parameters can be adjusted to allow testing the algorithms in situations of interest. It is also presented in the framework some basic FCA algorithms and some formal contexts obtained from real data sets, from a relatively small to a very larg...

This study proposes a model for the analysis and performance evaluation of e-supply chains (e-SCs), that are supply chains (SCs) in which actors are connected by Internet technologies. It is assumed that e-SC performances are influenced by the network organizational structures, by the criteria adopted to manage relationships among involved actors, and by the critical activities that the leading...

This paper discusses the usefulness of (max, +) algebra as a mathematical modelling framework for discrete event systems (DESs). A Max-Plus Algebra Toolbox developed at Lehrstuhl für Systemtheorie technischer Prozesse is presented. This software package is a set of functions to take advantage of the (max, +) algebra in the Matlab environment for rapid prototyping, design, and analysis of DESs. ...

We have analyzed the vulnerability and threat of the biometric evaluation database and proposed the method to generate a synthetic database from a real database. Our method is characterized by finding nearest neighbor triples or pairs in the feature space of biometric samples, and by crossing over those triples and pairs to generate synthetic samples. The advantages of our method is that we can...