We concentrate on the property that the progression of collaborative work involves communication among participants, and we consider a flexible method for managing transactions utilizing structured messages. In the literature, advanced transaction models for collaborative work environment have been proposed. However, since the models treat work process as a target of transaction, it is difficul...

We will present a complete syllabifier for Italian (Sylli), that is based on phonological principles, flexible and easy to adapt for other uses, alphabets and languages. Crucial concepts regarding syllabification principles in modern phonological theory will be discussed (§1.1); specific issues concerning Italian syllabification will then be summarised (§1.2) and an overview of the available au...

At the beginning, programming was inspired by the search of the best solutions. At that time some fundamental stones like famous languages and object oriented and structured programming were laid. It was found later that applications could generate huge profits; after it marketing departments started to decide what was right and wrong. Programs are ruled by developers but declared user-friendly...

The IEC 61850 SCL language for Substation Configuration description is standardized for the interoperable exchange of engineering data between engineering tools. Its model based approach allows to use it also for other purposes. As an illustration this paper explores some examples, like usage for storage of protection parameters, maintenance support, control center gateway engineering, and appl...

In this article we argue that open agent organisations can be effectively designed and implemented as institutionalized electronic organisations ('electronic institutions') composed of a vast amount of heterogeneous (human and software) agents playing different roles and interacting by means of speech acts. Here we take the view that the desing and development of electronic institutions must be...

We consider a set X of distinct points in the n-dimensional projective space over an algebraically closed field k. Let A denote the coordinate ring of X , and let ai(X) = dimk[Tor R i (A, k)]i+1. Green’s Strong Castelnuovo Lemma (SCL) shows that if the points are in general position, then an−1(X) 6= 0 if and only if the points are on a rational normal curve. Cavaliere, Rossi and Valla conjectur...

The principal frame and principal quadric form a fundamental description of a smooth surface at a point. This paper is concerned with estimating these from the 3D data acquired by a sensor such as a structured light system. Eight diierent estimation methods are described and a comparison of their performance is presented.