Human emotion simulation in a dynamic environment

The aim of this work is to contribute to the believability of the simulated emotions for virtual entities to allow them display human like features. Endowing virtual entities with such features requires an appropriate architecture and model. For that, a study of emotional models from different perspective is undertaken. The fields include Psychology, Organic Components, Attention study and Computing. Two contributions are provided to reach the aim. The first one is a computational emotional model based on Scherer’s theory (K. Scherer, 2001). This contribution allows to generate a series of modifications in the affective state from one event by contrast to the existing solutions where one emotion is mapped to one single event. Several theories are used to make the model concrete. The second contribution make use of attention theories to build a paradigm in the execution of tasks in parallel. An algorithm is proposed to assess the available resources and allocate them to tasks for their execution. The algorithm is based on the multiple resources theory by Wickens (Wickens, 2008). The two contributions are combined into one architecture to produce a dynamic emotional system that allows its components to work in parallel. The first contribution was evaluated using a questionnaire. The results showed that mapping one event into a series of modifications in the affective state can enhance the believability of the simulation. The results also showed that people who develop more variations in the affective state are more perceived to be feminine

Drivers’ behaviour modelling for virtual worlds

In this paper we present a study that looks at modelling drivers’ behaviour with a view to contribute to the problem of road rage. The approach we adopt is based on agent technology, particularly multi-agent systems. Each driver is represented by a software agent. A virtual environment is used to simulate drivers’ behaviour, thus enabling us to observe the conditions leading to road rage. The simulated model is then used to suggest possible ways of alleviating this societal problem. Our agents are equipped with an emotional module which will make their behaviours more human-like. For this, we propose a computational emotion model based on the OCC model and probabilistic cognitive maps. The key influencing factors that are included in the model are personality, emotions and some social/personal attributes

Etude expérimentale et théorique d’un nouveau composé halogène pnicture Hg12_{12}Sb6(_6 (Br5,186_{5,186}I6,814)_{6,814})

We synthesized the compound $\mathrm{Hg}_{12}\mathrm{Sb}_6(\mathrm{Br}_{5,186}\mathrm{I}_{6,814})$ by chemical vapour transport method. Its structure was determined by single crystal X-ray diffraction. The optical band gap was determined as 2,1 eV according to UV${-}$vis diffuse reflectance spectroscopy. Furthermore, the photocatalytic experiments have shown the ability of the $\mathrm{Hg}_{12}\mathrm{Sb}_6$ ($\mathrm{Br}_{5,186}\mathrm{I}_{6,814}$) to degrade rhodamine B (RhB) under solar light radiation. The ab initio calculations using the CASTEP code give a gap of 1,7 eV in good agreement with that found experimentally

Explainable Clustering Applied to the Definition of Terrestrial Biomes

We present an explainable clustering approach for use with 3D tensor data and use it to define terrestrial biomes from observations in an automatic, data-driven fashion. Our approach allows us to use a larger number of features than is feasible for current empirical methods for defining biomes, which typically rely on expert knowledge and are inherently more subjective than our approach. The data consists of 2D maps of geophysical observation variables, which are rescaled and stacked to form a 3D tensor. We adapt an image segmentation algorithm to divide the tensor into homogeneous regions before partitioning the data using the k-means algo- rithm. We add explainability to the classification by approximating the clusters with a compact decision tree whose size is limited. Preliminary results show that, with a few exceptions, each cluster represents a biome which can be defined with a single decision rule

Ion Beam Synthesis of Cobalt Silicide Layers in Si(111)

Thin CoSi2 layers are formed by 195 keV Co ion implantation in Si(111) substrates to a dose of 2 × 1017 Co+/cm2 at room temperature (RT) followed by annealing in N2 atmosphere at different temperatures during 1 h are investigated. The characterizations of the as-implanted and annealed samples are performed using Rutherford backscattering spectrometry (RBS) and X-ray diffraction (XRD). Also the obtained samples have been characterized by means of Raman spectroscopy. The results show that the CoSi2 phase is polycrystalline with a random crystallographic orientation

Experimental and theoretical study of novel germanium tungstates compounds Ge x W 1-x O 3 (x-1/4, 1/2) and Ge 1-x WO 4 (x-0.2)

International audienceThe crystal structures of three (03) novel germanium tungstates were investigated by single-crystal X-ray diffraction and density functional theory (DFT) calculations. The structures are characterized by distorted MO 6 (M = Ge/W) octahedral, forming infinite zigzag chains. In Ge x W 1-x O 3 (x - 1/4, 1/2 ), the systems display a transition from pure WO 3 semiconducting to metallike behavior by shifting down the Fermi level; this is due to germanium's lower valence, which acts as a p-type semiconductor by creating electron holes in the lattice. It was found that Ge x W 1-x O 3 (x - 1/4, 1/2 ) exhibits strong reflectivity and absorption in the nearinfrared region, while weak reflectivity and absorption appear in the visible region. Compared to GeWO 4, the estimated electronic density of states in Ge 1-x WO 4 (x - 0.2) shows a narrow band gap ( 0.89 eV) due to Ge-vacancies, which is considered the smaller band gap among analogous wolframites, resulting in an increase of the absorption and the relectivity in the visible region. (c) 2023 Elsevier B.V. All rights reserved

Structure and New Substructure of α-Ti2O3: X-ray Diffraction and Theoretical Study

The Crystal structure of both α-Ti2O3 and its new substructure with a halved c-axis has been investigated by single-crystal X-ray diffraction and density functional theory (DFT) calculations. The α-Ti2O3 substructure described in the R-3m space group, reveals an unusual 12-fold high coordination of Ti atoms forming edge and face-sharing distorted hexagonal prisms TiO12 stacking along the c-axis. The Hubbard-corrections predict a close bandgap for both α-Ti2O3 and its substructure; whereas a comparative study of their relative stability indicates that the substructure is thermodynamically less stable

Multitasking in Emotion Modelling Attention Control

The work described in this paper is about building a general model capable of simulating human behaviour and emotions using virtual characters. To make the simulation realistic enough, virtual characters need to express emotions according to the environment and deal with those emotions in a parallel way where an emotional experience can be triggered at the same time as another emotional response. The virtual character will have perceptions, feel and express emotions and respond to different situations. To make the simulation realistic, we used a method allowing the virtual characters to execute tasks, perceive events and display emotions in a parallel way. To do that, we used the multiple resources model [1] to control the attention and to predict when two or more actions can be executed at the same time. The used emotional model is based on Scherer’s theory [2]. However, in this paper we focus on the control of the attention as a part of the emotional process

Experimental and theoretical study of a new pnictidehalide compound Hg12Sb6(Br5.186I6.814)

International audienceNous avons synthétisé le composé par la méthode de transport en phase vapeur. Sa structure est déterminée par diffraction des rayons X sur monocristal. L’analyse par UVvis en mode réflectance diffuse indique un gap optique de 2,1 eV. De plus, les tests photocatalytiques ont montré l’aptitude de à dégrader la rhodamine B sous la lumière du soleil. Les calculs ab initio utilisant le code CASTEP donnent un gap de 1,7 eV en bon accord avec celui trouvé expérimentalement