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Université de Fribourg

Finding the adequate location scenario after the merger of fire brigades thanks to Multiple Criteria Decision Analysis Methods

Aldabbas, Mohammad ; Venteicher, Francesca ; Gerber, Lenna ; Widmer, Marino

(Internal working papers DIUF ; 18-01)

This paper addresses the issue of selecting a suitable location for a fire station in canton of Fribourg, as a result of a fire brigades’merger, by applying Multiple Criteria Decision Analysis (MCDA) methods. Solving the problem of determining fire station locations through various methods has been analyzed in-­‐depth by researchers. However, a different approach, based on application of...

Université de Fribourg

Complementing Büchi automata with a subset-tuple construction

Allred, Joel ; Ultes-Nitsche, Ulrich

(Internal working papers DIUF ; 15-01)

Complementation of Büchi automata is well known for being difficult. In the worst case, a state-space growth of (0:76n)n is unavoidable. Recent studies suggest that “simpler” algorithms perform better than more involved ones on practical cases. In this paper, we present a simple “direct” algorithm for complementing Büchi automata. It involves a structured subset construction (using...

Université de Fribourg

Gesturing on the steering wheel, a comparison with speech and touch interaction modalities

Angelini, Leonardo ; Baumgartner, Jürgen ; Carrino, Francisco ; Carrino, Stefano ; Caon, Maurizio ; Abou Khaled, Omar ; Sauer, Jürgen ; Lalanne, Denis ; Mugellini, Elena ; Sonderegger, Andreas

(Internal working papers DIUF ; 15-03)

This paper compares an emergent interaction modality for the In-Vehicle Infotainment System (IVIS), i.e., gesturing on the steering wheel, with two more popular modalities in modern cars: touch and speech. We conducted a betweensubjects experiment with 20 participants for each modality to assess the interaction performance with the IVIS and the impact on the driving performance. Moreover, we...

Université de Fribourg

COG-FPOM: adapted fuzzy pay-off method for real options valuation : application in the abandonment decision of petroleum producing fields

Borges, R.E.P. ; Meier, Andreas

(Internal working papers DIUF ; 17-01)

This paper presents the COG-FPOM, a model based on the Fuzzy Pay-Off Method (FPOM). The FPOM is a scenario-based real option valuation method that uses fuzzy numbers as possibility distributions. The paper shows an unexpected result generated by the original FPOM, in which the real option would have a negative value. It further analyses its reasons and suggests a way to overcome it, by using the...

Centre de Recherches Energétiques et Municipales

Modèle hydraulique du réseau d’eau de la ville de Martigny

Ferreira

Les modèles hydrauliques des réseaux d’eau sont l’une des plus récente technologie d’un processus de développement qui a commencé, il y a déjà longtemps, lorsque le premier système de ce genre a été construit. De nos jours, ces modèles se présentent comme un élément essentiel dans la planification, diagnose et gestion opérationnelle d’un système de distribution d’eau...

Université de Fribourg

The no-wait job shop with regular objective : a method based on optimal job insertion

Gröflin, Heinz ; Bürgy, Reinhard

(Internal working papers DIUF ; 15-02)

The no-wait job shop problem (NWJS-R) considered here is a version of the job shop scheduling problem where, for any two operations of a job, a fixed time lag between their starting times is prescribed. Also, sequence-dependent set-up times between consecutive operations on a machine can be present. The problem consists in finding a schedule that minimizes a general regular objective function. We...

Université de Fribourg

Neuralink and Beyond: Challenges of Creating an Enhanced Human

Gurtner, Dimitri

(Internal working papers DIUF ; 21-01)

This article is a literature review of Neuralink, brain-machine interfaces (BMIs) and their applications, followed by future possibilities of BMIs and their potential impacts. Currently, BMIs predominantly have therapeutic applications, such as helping people with spinal cord injury by allowing them to control a computer directly with their brain. However, BMIs can also improve learning,...

Université de Fribourg

Towards human-centered cyber-physical systems : a modeling approach

Hadorn, Benjamin ; Courant, Michèle ; Hirsbrunner, Béat

(Internal working papers DIUF ; 16-01)

In this paper we present a new CPS model that considers humans as holistic beings, where mind and body operate as a whole and characteristics like creativity and empathy emerge. These characteristics influence the way humans interact and collaborate with technical systems. Our vision is to integrate humans as holistic beings within CPS in order to move towards a human-machine symbiosis. This...

Université de Fribourg

Exploring nuances of user privacy preferences on a platform for political participation

Kaskina, Aigul

(Internal working papers / DIUF ; 17-02)

A problematic gap between existing online privacy controls and actual user disclosure behavior motivates researchers to focus on a design and development of intelligent privacy controls. These intelligent controls intend to decrease the burden of privacy decision-making and generate user-tailored privacy suggestions. To do so, at first it is necessary to analyze user privacy preferences. Previous...

Centre de Recherches Energétiques et Municipales

Métabolisme du mazout de Martigny

Lassueur

Tout système géographique, qu’il s’agisse d’un quartier, d’une ville ou d’une région est le terrain d’activités fort diverses : dans une usine, les ingrédients d’une boisson gazeuse sont mélangés à de l’eau et mis en bouteille, dans une poubelle au coin d’une rue des microorganismes dégradent un reste de pomme, ailleurs, sur une terrasse, assis sur une chaise en...