Search results for "Communications"

Maximum Lifetime Problem in Sensor Networks with Limited Channel Capacity

2016

We analyze the maximum lifetime problem in sensor networks with limited channel capacity for multipoint-to-multipoint and broadcast data transmission services. For the transmission model in which the transmitter adjust the power of its radio signal to the distance to the receiver we propose a new Signal to Interference plus Noise Ratio function and use it to modify the Shannon-Hartley channel capacity formula. We show, that in order to achieve an optimal data transmission regarding considered the maximum lifetime problem we cannot allow for any interference of signals. For considered transmission model and the modified capacity formula we solve the maximum lifetime problem in one dimensiona…

Information and Communication Technology within English for Academic Purposes Studies

2009

Multimodal Communication and Peer Interaction during Equation-Solving Sessions with and without Tangible Technologies

2023

Despite the increasing use of technologies in the classroom, there are concerns that technology-enhanced learning environments may hinder students’ communication and interaction. In this study, we investigated how tangible technologies can enhance students’ multimodal communication and interaction during equation-solving pair work compared to working without such technologies. A tangible app for learning equation solving was developed and tested in fourth and fifth-grade classrooms with two class teachers and 24 students. Video data of the interventions were analysed using deductive and inductive content analysis. Coded data were also quantified for quantitative analysis. Additionally, teac…

Extension du domaine du sacré

2013

Faisant le constat qu’il releve d’un monde aujourd’hui completement revolu, Paul Ricœur (1974 : 71) ecrivait : « Le sacre est l’archaique ». Demarche bien temeraire, donc, celle d’engager Questions de communication dans un debat referme sur le passe, voire depasse. La discussion serait close et le sujet entendu. Tournons la page. Pourtant le sacre reste d’une etonnante acuite. Il y a quelques annees, il trouvait encore a s’exposer dans ce temple de la creation moderne et de l’avant-garde qu’e...

Do E-Athletes Move?

2016

This article offers possibly the first peer-reviewed study on the training routines of elite e-athletes with special focus on the subjects' physical exercise routines. The study is based on a sample of 115 elite e-athletes. According to the responses, e-athletes train approximately 5.28 hours every day around the year on the elite level. Approximately 1.08 hours of that training is physical exercise. More than half (55.6%) of the elite e-athletes believe that integrating physical exercise in their training programs has a positive effect on esport performance; however, no less than 47.0% of the elite e-athletes do their physical exercise chiefly to maintain overall health. Accordingly, the s…

L’indicible et l’indiciel. Empreinte gustative et trace figurative

2011

International audience; L’image des aliments fait l’objet d’une production éditoriale foisonnante, protéiforme : livres de cuisine, de recettes ; ouvrages sur le goût, la table, la gastronomie, les Chefs, les styles et les cultures alimentaires ; émissions et blogs culinaires ; productions médiatiques et multimédias, artistiques et muséales innombrables . Sans dresser d’inventaire, on voit bien que le sujet fascine, au point d’occuper, voire de saturer, l’espace des publications en tous genres. L’ampleur du phénomène rend toujours plus difficile la marge de différenciation par rapport à tout ce qui est produit sur le marché, notamment en termes d’images. Difficile, en effet, de parler des a…

Incorporating teacher-student dialogue into digital course material : Usage patterns and first experiences

2020

This work-in-progress research investigates teacher-student communication via Learning Management Systems (LMS) in highly populated courses. An LMS called TIM (The Interactive Material) includes a specific commenting technology that attempts to make teacher-student dialog effortless. The research goal is to explore students’ willingness to use the technology and identify patterns of usage. To these ends, a survey with both Likert and open-ended questions was issued to CS1 and CS2 students. A favorable student evaluation was observed while several critical viewpoints that inform technology development were revealed. We noticed that besides appreciating the possibility of making comments, man…

La Percepción Del Alumnado Sobre Las Competencias Docentes Del Profesorado De La Rama De Ciencias Sociales Y Jurídicas De La Universitat De València

2013

En el presente trabajo se presentan los datos de una investigación realizada en la Universidad de Valencia en la que se analiza la percepción del alumnado sobre las competencias docentes del profesorado del área de Ciencias Sociales y Jurídicas. En el estudio participaron un total de 389 estudiantes universitarios de 10 titulaciones diferentes de la Universitat de València. En general, las 32 competencias son valoradas por los sujetos de la muestra como muy importantes en el proceso de enseñanza/aprendizaje. El alumnado valora las competencias personales como las más importantes, seguidas de las científicas, las metodológicas y las sociales. Globalmente las dos competencias más valoradas ha…

Movement Detection with Event-Based Cameras: Comparison with Frame-Based Cameras in Robot Object Tracking Using Powerlink Communication

2018

Event-based cameras are not common in industrial applications despite the fact that they can add multiple advantages for applications with moving objects. In comparison with frame-based cameras, the amount of generated data is very low while keeping the main information in the scene. For an industrial environment with interconnected systems, data reduction becomes very important to avoid network congestion and provide faster response time. However, the use of new sensors as event-based cameras is not common since they do not usually provide connectivity to industrial buses. This work develops a network node based on a Field Programmable Gate Array (FPGA), including data acquisition and trac…

FLUMO: FLexible Underwater MOdem

2019

The last years have seen a growing interest in underwater acoustic communications because of its applications in marine research, oceanography, marine commercial operations, the offshore oil industry and defense. High-speed communication in the underwater acoustic channel has been challenging because of limited bandwidth, extended multipath, refractive properties of the medium, severe fading, rapid time variation and large Doppler shifts. In this paper, we show an implementation of a flexible Software-Defined Acoustic (SDA) underwater modem, where modulation parameters are completely tunable to optimize performance. In particular, we develop the system architecture following two key ideas. …