We consider a certain class of vectorial evolution equations, which are linear in the (max,+) semi-eld. They can be used to model several types of discrete event systems, in particular stochastic service systems where we assume that the arrival process of customers (tokens, jobs, etc.) is Poisson. Under natural Cramer type conditions on certain variables, we show that the expected waiting time ...

A rigidification phenomenon for certain thin slender parabolic shells, with curvature in the transversal direction to the main length was addressed in a previous work. The main results are generalized here to the case when the shape of the middle surface is no longer cylindrical, but incorporates a very small curvature in the longitudinal direction (it is “slightly hyperbolic”). The structure o...

Les systèmes de supervision de la plupart des applications industrielles génèrent une très grande quantité d’informations et les collectent dans des bases de données. Ce papier concerne la découverte de modèles de chroniques à partir de séquences d’événements. Chaque événement appartient à une certaine classe. Selon l’approche stochastique (Le Goc et al. (2005)), un ensemble de séquences est re...

We improve upon results of our previous paper on interpolation subject to convex constramts In this paper we focus on the case of comtrained best interpolation when the object function is chosen to be \\ Tx || where T is a bounded hnear operator defined on a Hubert space X onto another Hilbert space Y with aftmte dimemional kernel ( We simpfy say T is correct from X to Y) We prove that under ra...

In this paper a methodology is presented to generate webforms for business documents directly from XML schemas. XML Schemas that are based on the UN/CEFACT Naming and Design Rules may be maintained by industry organizations or negotiated bilaterally between trading partners. In details, schemas may differ per business partner and process implementation, and change over time. The usability of sc...

Time cues are ubiquitous in language and the ability to interpret them is essential for understanding events during discourse comprehension. Temporal markers that signal ongoing versus completed events, like the progressive and simple past tense, prompt distinct mental event representations. However, the detailed properties of ongoing event representations remain unexplored. Drawing from both t...

Let p be a prime and let E(IFp) be an elliptic curve defined over the finite field IFp of p elements. For a given point G ∈ E(IFp) the linear congruential genarator on elliptic curves (EC-LCG) is a sequence (Un) of pseudorandom numbers defined by the relation Un = Un−1 ⊕G = nG⊕ U0, n = 1, 2, . . . , where ⊕ denote the group operation in E(IFp) and U0 ∈ E(IFp) is the initial value or seed. We sh...

Applying Zeilberger’s algorithm of creative telescoping to a family of certain very-well-poised hypergeometric series involving linear forms in Catalan’s constant with rational coefficients, we obtain a second-order difference equation for these forms and their coefficients. As a consequence we obtain a new way of fast calculation of Catalan’s constant as well as a new continued-fraction expans...

PURPOSE The lack of agreement regarding assessment methods is responsible for the variability in the reported rate of occurrence of unilateral neglect (UN) after stroke. In addition, dissociations have been reported between performance on traditional paper-and-pencil tests and UN in everyday life situations. METHODS In this paper, we present the validation studies of a quantitative test batte...