A supercharacter theory of a finite group is a natural approximation to the ordinary character theory. There is a particularly nice supercharacter theory for Un, the group of unipotent upper triangular matrices over a finite field, that has a rich combinatorial structure based on set partitions. Various representation theoretic constructions such as restriction and induction have supercharacter...

UN/CEFACT’s ModellingMethodology (UMM) is amethodology created to capture the business requirements of inter-organizational business processes, regardless of the underlying technology. An example of how to apply UMM to an inter-enterprise e-health project is presented in this paper.

This paper investigates the periodic points of Gauss type shifts associated to even continued fraction (Schweiger) and backward (R\'enyi). We show that they coincide exactly with two sets quadratic irrationals we call $E$-reduced, respectively $B$-reduced. prove these numbers are equidistributed respect (infinite) Lebesgue absolutely continuous invariant measures corresponding shift.

Ontologies have been suggested as a means to ensure interoperability of Ambient Intelligence (AmI) applications as well as effectiveness within different sensory environments. We introduce a new logical language specifically tailored to the task of ontology design for AmI applications. This language has known advantages of description logics, namely a precisely defined semantics and a brief, in...

An integrated model is developed for short-term yearly reservoir operation for irrigation of multiple crops. The model optimizes a measure of annual crop production, starting from the current period in real time. Reservoir storage at the beginning of a period, inflow during the previous period, crop soil moisture values and crop production already achieved up to the beginning of the period are ...

Rectangular dropshafts, commonly used in sewers and storm water systems, are characterized by significant flow aeration. New detailed air–water flow measurements were conducted in a near-full-scale dropshaft at large discharges. In the shaft pool and outflow channel, the results demonstrated the complexity of different competitive air entrainment mechanisms. Bubble size measurements showed a br...

Dans cet article, nous proposons une étude concernant l’identification et l’exploitation des états partiels inconsistants (IPS) dans le cadre de la résolution du problème de satisfaction de contraintes (CSP). Un IPS correspond à un ensemble de “décisions d’appartenance” prises sur un réseau de contraintes et ne menant à aucune solution. Notre étude tend à unifier un certain nombre de travaux ré...