The student is changing at universities and university colleges. Also adult-learners find their way to the universities. Formations for adult-learners have to be more efficient. The biggest cost for formations for adult learners is their absence at the workfloor. Question is how to open knowledge in a traditional university (college), taking into account that the students are no longer an homog...

In this paper, we focus on spatial formations when interacting via mobile robotic telepresence (MRP) systems. Previous research has found that those who used a MRP system to make a remote visit (pilot users) tended to use different spatial formations from what is typical in humanhuman interaction. In this paper, we present the results of a study where a pilot user interacted with ten elderly vi...

The history of anthropology reflects a sometimes contentious dynamic between the study of unique cultural features and ones that are broadly shared across cultures, indeed so broadly shared that scholars have identified some as regularly recurring social formations. One aspect of the contention between these two areas of study is that the study of recurrent social formations has been marred by ...

In this paper, distributed control policies for spacecraft formations that draw inspiration from the simple idea of cyclic pursuit are studied. First studied are cyclic-pursuit control laws for both singleand double-integrator models in three dimensions. In particular, control laws are developed that only require relative measurements of position and velocity with respect to the two leading nei...

Robot formations imply the establishment and the maintenance of a predetermined geometric shape by a group of robots. In this work, we achieve formations using robots with proximity sensors of short detection range and no inter-robot communication equipment. This fact turns the synthesis problem into a hard one compared to those cases where the robot has information about the absolute location ...

Introduction: Les métropoles camerounaises concentrent un nombre croissant d'enfants cibles, non atteints par les services de vaccination de routine. Méthodes: Une étude transversale descriptive, basée sur échantillonnage exhaustif des formations sanitaires légales offrant en routine des services de vaccination a été réalisée dans le district de santé de Djoungolo, (ville de Yaoundé). L'évaluat...

The distributions of permeability and porosity are key factors that control airflow and gas phase transport in unsaturated formations. To understand the behavior of flow and transport in such formations, characterization procedure is a typical approach that has been widely applied to laboratories and fields. As is recognized by most investigations, this approach relies on accurate measurements,...

Microbial communities of two deep (1,270 and 316 m) alkaline (pH 9.94 and 8.05), anaerobic (Eh, -137 and -27 mV) aquifers were characterized by rRNA-based analyses. Both aquifers, the Grande Ronde (GR) and Priest rapids (PR) formations, are located within the Columbia River Basalt Group in south-central Washington, and sulfidogenesis and methanogenesis characterize the GR and PR formations, res...

In this paper we show how non–linear attractor dynamics can be used as a framework to control teams of autonomous mobile robots that should navigate according to a predefined geometric formation. The environment does not need to be known a priori and may change over time. Implicit to the control architecture are some important features such as establishing and moving the formation, split and jo...

Formations required to move to given destinations can be controlled to arrive to a predefined geometric shape or to self-organize. For a large number of autonomous mobile robots, geometric formations pose too many constraints to achieving inter-robot positions. Self-organizing formations are more suitable for a large number of robots and generate formation shapes while avoiding robots collision...