Understanding the properties of paper fibers and paper fiber bonds can be really significant in improving the quality of paper. The problem in gathering measurement data from individual paper fibers is the lack of reliable and efficient research instruments. Also, without automation the yield of experiments will be low and the results will depend on the skills of the operator. This paper presen...

This paper deals with the Automatic Control Telelab (ACT), a remote laboratory of automatic control developed at University of Siena. In particular, it focuses on a new chapter of the ACT referred to as “student competition”. It is a mechanism through which students can compete to design the controller with best performance for a given remote experiment. Controllers which achieve the given perf...

This paper describes an automatic method for the detection of non-stationarity in speech signals. It is based on three measures of non-stationarity using Line Spectrum Frequencies (LSFs), the derivative of RMS values, and a combination of these two features. The application of the proposed method to time-scaling of speech signals is also presented. Results from an informal listening test suppor...

Technical reports from the Automatic Control group in Linkping are available by anonymous ftp at the address ftp.control.isy.liu.se. This report is contained in the compressed postscript le 2018.ps.Z. Abstract We present results concerning the parameter estimates obtained by prediction error methods in the case of input signals that are insuuciently rich when considered locally in time. As is i...

Looking back thirty years ago, the advances in teaching have accompanied the technology evolution. As soon as the technology progressed, new teaching tools began to appear. This work describes one of these technological advances, Interactivity. Several definitions of Interactivity are presented from different points of view. Afterwards, the influence of Interactivity on teaching is discussed pr...

Les requêtes approximatives (RA) représentent une solution pertinente qui permet d’améliorer le temps de réponse aux dépens de l’exactitude. Celles-ci sont adaptées aux requêtes avec agrégats pour lesquelles la précision au dernier décimal n’est pas exigée. La contribution de ce travail est le calcul en ligne de l’agrégation pour les requêtes flexibles avec groupement d’attributs et jointure en...

Among all the available approaches for software piracy forensics, one existing and exceptional approach is the theoretical frame work called AFC (Abstraction-Filtering-Comparison), an accepted approach in US courts for evaluating copyright infringement claims involving computer software. Through this paper, the authors would like to approach AFC in a threefold manner: One, to discuss the nature...

This paper deals with the temperature stabilization of a large class of continuously stirred tank chemical reactors. We design state feedback controllers, and we show their ability to globally stabilize the temperature at an arbitrary set point in spite of uncertainties on the kinetics. Furthermore, it is also shown that these controllers can handle input constraints along the closed-loop traje...

A comparison between the plants of some vital South African industries such as Sugar Industry, the Iron and Steel Industry, the Chemical, Pulp and Paper Industries as well as Power Stations will single out the South African Sugar Factories for one very noticeable item: The absence of supervising and controlling instruments for the manufacturing process and for a number of ancillary processes.' ...