This paper focuses on the NP-hard problem of reducing the complexity of piecewise polyhedral systems (e.g. polyhedral piecewise affine (PWA) systems). The results are fourfold. Firstly, the paper presents two computationally attractive algorithms for optimal complexity reduction that, under the assumption that the system is defined over the cells of a hyperplane arrangement, derive an equivalen...

Commercial systems such as Flickr display interesting photos from their collection as an interaction mechanism for sampling the collection. It purely relies on social activity analysis for determining the notion of interestingness. We propose an alternative technique based on content analysis for finding interesting photos in a collection. We use a combination of visual attention models and an ...

Given arbitrary pictures, we explore the possibility of using new techniques from computer vision and artificial intelligence to create customized visual games on-the-fly. This includes coloring books, link-the-dot and spot-the-difference popular games. The feasibility of these systems is discussed and we describe prototype implementation that work well in practice in an automatic or semi-autom...

background: the aims of this study were to evaluate the employees' subjective assessments of different aspects of lighting condition as well as task area illuminance in manufacturing plants. methods: this field study was conducted between march and may 2013 , in three packing plants (saveh, central iran). data were collected by questionnaire and measurement of the task area illuminance levels. ...

Résumé : Cet article présente une application, les Albums plurilingues ELODiL, qui regroupe 11 albums de littérature jeunesse québécois en français (édités par deux maisons d’éditions québécoises Les 400 Coups et La Courte échelle) traduits à l’écrit l’oral, dans plusieurs langues. Durant le temps l’enseignement distance rendu nécessaire mesures confinement dû la pandémie Covid-19, cette applic...

background: heat stress is one of the harmful factors present in many workplaces. it can lead to performance loss and low functionality of the labor force. therefore, the aim of this study was to evaluate exposure to heat stress and its consequent performance loss among workers functioning in indoor high-temperature workplaces. materials and methods: this descriptive, analytical study was condu...

In order to investigate the peculiarities of the radon situation in workplaces located inside buildings, compared with the radon situation in dwellings, long-time recordings of radon, attached radon progeny and unattached radon progeny concentrations (Po, Pb, Bi) have been carried out at several categories of workplaces (e. g. offices, public buildings like schools and hospitals, different room...