Commandes gestuelles interactives

L'objectif du stage est de concevoir un mécanisme d'apprentissage des tracés associés aux commandes gestuelles sur un ordinateur tablette. Pour cela, nous allons utiliser les menus interactifs gestuels qui permettent d'aider l'utilisateur à mémoriser le geste grâce à une utilisation répétée. Un menu gestuel interactif est un dérivé gestuel des menus interactifs simples : l'activation de la commande se fait non pas en cliquant sur l'item choisi mais en traçant un geste. Le but de ce menu est d'aller vers une interface purement gestuelle où l'activation de la commande est basée sur une reconnaissance gestuelle du tracé sans l'intervention du menu interactif. Le principe du menu est d'indiquer à l'utilisateur la forme du geste graphique à travers des points cibles à atteindre et des zones par lesquelles il faut passer pour activer la commande. Ce menu offre une interaction continue à l'utilisateur en lui rendant des résultats visuels intermédiaires au moindre mouvement effectué afin de l'inciter à poursuivre son geste ou à annuler l'action. L'apprentissage du vocabulaire de gestes se fait d'une manière implicite pour l'utilisateur. À force d'une manipulation répétée du menu, il commence à mémoriser le geste qui suit une forme régulière correspondant aux directions choisies. La topologie des menus permet d'induire un vocabulaire de gestes dont la forme est régulière, fluide et facilement identifiable dans la phase de reconnaissance gestuelle. Une fois l'ensemble des gestes appris, l'utilisateur peut exécuter sa commande sans faire appel aux menus en traçant le même geste qui a servi dans la phase d'apprentissage

POLITENESS AND COMPLIMENTING WITHIN AN ALGERIAN CONTEXT -A SOCIO-PRAGMATIC ANALYSIS-

Complimenting is the speech act that reflects some politeness strategies in every day’s life. Its main characteristic is expressing positive appraisal in order to build up new relationships or reinforce current relationships and give them support. It is commonly used or found in various circumstances and within different moods i.e. in happy and sad events and temperaments. Actually, the satisfaction which generally results from receiving a compliment may lead to the conviction that the person who uses compliment is in a way or another is polite and friendly or at least tries to make the addressee feels more relaxed. The research at hand aims at investigating the way Algerians make, receive, accept and reject compliments. The methodology followed is based on two main tools namely; participant observation and questionnaire tool so as to be able to capture the phenomenon as it occurs. The results shows that complimenting in Algeria may result in either accepting or rejecting as it can lead to the employment of some religious terms so as to avoid the happening of bad incident. &nbsp

Removal of chromium (III) by two-aqueous phases extraction

Two-aqueous phase extraction of chromium (III) as a solute from their aqueous solutions was investigated using polyethoxylated alcohols (CiEj) as a biodegradable non-ionic surfactant in the presence of anionic sodium dodecylbenzene sulfonate (SDBS). First, the combined effects of chromium and surfactants mixture (anionic and non-ionic) on the cloud point temperature were determined. After this, the phase diagrams of binary systems water–surfactant (NW342 and C10E3) were traced. According to the given surfactants concentration, the extracted solute reached 98.5% and 60% for NW342 and C10E3, respectively at pH equal to 3. The addition of sodium chloride lowers the cloud point temperature of surfactant where the phenomenon of salting-out was pronounced. Under the optimal extraction conditions, the suggested extraction mechanism is based on chromium species-NW342 non-ionic surfactant micelles solvatation. Since, the prevalence species (93.82%) were Cr(III)4(OH)66+, given by a theoretical calculation using CHEAQS V. L20.1. The first stage regeneration of NW342 surfactant was 27.82% at pH equal to 4.23 factorial designs were employed for screening the factors that would influence the overall optimization of a batch procedure of sorption

Continuous marking menus for learning cursive pen-based gestures

International audienceIn this paper, we present a new type of Marking menus. Continuous Marking Menus are specifically dedicated to pen-based interfaces, and designed to define a set of cursive, realistic handwritten gestures. In menu mode, they offer a continuous visual feedback and fluent exploration of menu hierarchy, inviting the user to execute cursive gestures for invoking the desired commands. In marking mode, a specific gesture recognition method is proposed and proved to be very efficient for recognizing cursive gestures

Physical Properties of Yttrium-Rhodium and Yttrium-Copper B2-Type Rare Earth Intermetallic Compounds: First Principles Study

The electronic structure of B2-YCu and YRh intermetallic compounds which crystallize in the CsCl structure has attracted the attention of the scientific world because of their excellent mechanical properties. The advantage of studying these materials is to answer of some industrial request in the materials that resist for high temperature and high oxidation resistance. However, high ductility has been observed in these compounds at room temperature. In this present work, we employed ab initio calculation methods while basing on the full-potential linearized augmented plane wave (FP-LAPW) method within density functional theory implanted in the Wien-2 k code, which is used to examine the various properties of these materials (YCu, YRh) like structural, electronic, and elastic properties. The results obtained are in good agreement with those found in other theoretical studies and experimental data

Knowledge graph-based method for solutions detection and evaluation in an online problem-solving community

Online communities are a real medium for human experiences sharing. They contain rich knowledge of lived situations and experiences that can be used to support decision-making process and problem-solving. This work presents an approach for extracting, representing, and evaluating components of problem-solving knowledge shared in online communities. Few studies have tackled the issue of knowledge extraction and its usefulness evaluation in online communities. In this study, we propose a new approach to detect and evaluate best solutions to problems discussed by members of online communities. Our approach is based on knowledge graph technology and graphs theory enabling the representation of knowledge shared by the community and facilitating its reuse. Our process of problem-solving knowledge extraction in online communities (PSKEOC) consists of three phases: problems and solutions detection and classification, knowledge graph constitution and finally best solutions evaluation. The experimental results are compared to the World Health Organization (WHO) model chapter about Infant and young child feeding and show that our approach succeed to extract and reveal important problem-solving knowledge contained in online community’s conversations. Our proposed approach leads to the construction of an experiential knowledge graph as a representation of the constructed knowledge base in the community studied in this paper

SCIENCES POSTGRADUATE STUDENTS’ ATTITUDES TOWARDS MAKING ENGLISH THE LANGUAGE OF INSTRUCTION IN MOROCCAN TERTIARY EDUCATION

The current study investigated the attitudes of Moroccan university students in scientific disciplines towards using English as a language of instruction in tertiary education. Major published articles on English language described the upsurge of its speakers in the expanding circle as phenomenal. Morocco is no exception. Studies have shown that there has been a growing interest in learning English among youth. By the same token, students have been less enthusiastic about French currently used in academic settings and believe that English is more useful for the future of the country. In order to test the validity of the claim, quantitative research in which ninety-eight university students from different master’s program participated was conducted. The aim was to know their attitude towards making English the medium of instruction in higher education and either confirm or disconfirm the claim made by researchers in scholarly journals. After undertaking a survey questionnaire, it was shown that the vast majority of postgraduates specializing in scientific disciplines were in favor of using English in their studies. They definitely wanted English to take over French currently used in academic context in Morocco.  Article visualizations