Search results for "Chat"
showing 10 items of 259 documents
Regularization of chattering phenomena via bounded variation controls
2018
In control theory, the term chattering is used to refer to strong oscillations of controls, such as an infinite number of switchings over a compact interval of times. In this paper we focus on three typical occurences of chattering: the Fuller phenomenon, referring to situations where an optimal control switches an infinite number of times over a compact set; the Robbins phenomenon, concerning optimal control problems with state constraints, meaning that the optimal trajectory touches the boundary of the constraint set an infinite number of times over a compact time interval; the Zeno phenomenon, referring as well to an infinite number of switchings over a compact set, for hybrid optimal co…
Dynamics of copper and zinc sedimentation in a lagooning system receiving landfill leachate.
2013
9 pages; International audience; This study characterises the sediment dredged from a lagooning system composed of a settling pond and three lagoons that receive leachates from a municipal solid waste (MSW) landfill in France. Organic carbon, carbonate, iron oxyhydroxides, copper (Cu) and zinc (Zn) concentrations were measured in the sediment collected from upstream to downstream in the lagooning system. In order to complete our investigation of sedimentation mechanisms, leachates were sampled in both dry (spring) and wet (winter) seasonal conditions. Precipitation of calcite and amorphous Fe-oxyhydroxides and sedimentation of organic matter occurred in the settling pond. Since different di…
Influence of Temperature, Solvent and pH on the Selective Extraction of Phenolic Compounds from Tiger Nuts by-Products: Triple-TOF-LC-MS-MS Character…
2019
The aim of this study was to assess the effect of temperature, solvent (hydroethanolic mixtures) and pH on the recovery of individual phenolic compounds from &ldquo
La maison seigneuriale de Deyvillers
2005
Enseigner l’activité « écriture collaborative »
2019
Although certain education policies emphasize “the ability to collaborate” as a key element of educational reform, education for digital collaboration is poorly supported by public schools. To build the conditions of a sustainable education, we have developed a training model focused on learner autonomy. We present the results of an experiment conducted with students, our pedagogical model and its implementation, as well as our observation and analysis of this experiment. We analyzed discussions in instant messaging between students and teachers, and their productions. All results show the influence of our training. Thus, education and digital collaboration can be built from a triple analyt…
Ferdinand II d'Aragon: une figure emblématique des imaginaires politiques au siècle d'or
2013
International audience
Les poètes du chat noir
2020
International audience; Il est un lieu à Montmartre où les extravagants de tout poil, dès 1881, se retrouvent, où, entre deux verres d'absinthe, ils s'adonnent à leur bohème, sous la protection de la muse canaille avec laquelle ils élucubrent. Toujours ouvert, on jurerait que dans ce cabaret, "Le chat noir" leur porte bonheur !
Discourse in Internet Relay Chat
1999
The Norwegian Motion-Laboratory
2018
This paper contains an overview of the equipment currently available in the Norwegian Motion Laboratory, a description of the IT networking infrastructure in the laboratory, a GitHub link to open source code developed, description of the PyQt-based graphical user interface, presentation of robot forward and inverse kinematics, presentation of equations of motion for the suspended load motion and a description of the full system kinematics. The paper ends with a list of research experiments and publications from the laboratory to date.
Visualising knowledge from chat debates in argument diagrams
2010
This study investigates whether combining chat discussion and construction of an argument diagram stimulates students to formulate new ideas in practising argumentation. In this study, 16 secondary school students discussed vivisection and gender equality in pairs using both free and structured chat tools. In structured chat, the students selected and completed partial sentences provided by the computer. After the discussion, they jointly constructed either argument diagrams freely based on the previous discussions with an Internet tool or modified a diagram the computer had constructed automatically during the structured chat. The freely constructed diagrams contained more of the students'…