Dual active bridge is often considered in many dc/dc converter applications where high efficiency, input/output voltage ratio, and power level are required. Recently, a predictive control technique, named moving discretized set model has been introduced, order to achieve faster dynamics stable operation throughout the terminal ranges, considering global parameters. However, even if this techniq...

An Active Appearance Model (AAM) is a variable shape and appearance model built from annotated training images. It has been largely used to synthesize or fit face images. Person-independent face AAM fitting is a challenging open issue. For standard AAMs, fitting a face image for an individual which is not in the training set is often limited in accuracy, thereby restricting the range of applica...

Using the Portuguese interactive television service from TV Cabo as a working basis, this paper discusses the potential of communication services such as chat, forums and multi-user games to act as iTV community builders and to become real iTV killer applications. In the three cases presented in this paper – multi-player iTV games, interactive football matches and iTV talk-show “Noites Interact...

We consider a mechanical system which is controlled by means of moving constraints. Namely, we assume that some of the coordinates can be directly assigned as functions of time by implementing frictionless constraints. This leads to a system of ODE’s whose right hand side depends quadratically on the time derivative of the control. In this paper we introduce a simplified dynamics, described by ...

We describe a novel shape constraint technique which is incorporated into a multi-stage algorithm to automatically locate features on the human face. The method is coarse-to-fine. First a face detector is applied to find the approximate scale and location of the face in the image. Then individual feature detectors are applied and combined using a novel algorithm known as Pairwise Reinforcement ...

State constrained optimal control problems represent severe analytical and numerical challenges. A numerical algorithm based on an active set strategy involving primal as well as dual variables, suggested by a generalized Moreau-Yosida regularization of the state constraint is proposed and analyzed. Numerical examples are included.

We investigate Random Sequential Adsorption (RSA) on a random graph via the following greedy algorithm: Order the n vertices at random, and sequentially declare each vertex either active or frozen, depending on some local rule in terms of the state of the neighboring vertices. The classical RSA rule declares a vertex active if none of its neighbors is, in which case the set of active nodes form...

We studied a supplier selection problem, where a buyer, while facing random demand, is to decide ordering quantities from a set of suppliers with different yields and prices.We provided themathematical formulation for the buyer’s profitmaximization problem and proposed a solution method based on a combination of the active set method and the Newton search procedure. Our computational study show...