Search results for "LESS"
showing 10 items of 2452 documents
LoRa-Based Sensor Node Energy Consumption with Data Compression
2021
In this paper simple temporal compression algorithms' efficiency to reduce LoRa-based sensor node energy consumption has been evaluated and measured. It is known that radio transmission is the most energy consuming operation in a wireless sensor node. In this paper three lightweight compression algorithms are implemented in an embedded LoRa platform to compress sensor data in on-line mode and the overall energy consumption is measured. Energy consumption is compared to the situation without implementing any compression algorithm. The results show that a simple compression algorithm is an effective method to improve the battery powered sensor node lifetime. Despite the radio transmission's h…
Maurizio Galimberti. Il viaggio, la Sicilia, Gibellina
2021
Il contributo è dedicato al lavoro del fotografo Maurizio Galimberti sulle architetture e le opere d'arte della città di Gibellina nuova e dei ruderi di Gibellina vecchia. Galimberti interpreta con rara sensibilità l’unicità del fascino di questa città rasa al suolo dal terremoto della Valle del Belìce del 1968. ricostruita 20 km più a valle cogliendo le suggestioni dell’incontro tra cultura e natura, arte e rovine. Attraverso le fotografie selezionate per il libro d'artista intitolato "Gibellina" Galimberti dialoga così con artisti di caratura internazionale tra cui Alberto Burri, Fausto Melotti, Alessandro Mendini. The contribution is dedicated to the work of the photographer Maurizio Gal…
Samtidskunst i skolen : En studie som inviterer elever til en konseptuell workshopspraksis
2019
Masteroppgave kunstfag KF500 - Universitetet i Agder 2019 Both from the elementary school education and the professional life, I have gained insight and an experience basis for commenting on the subject of arts and crafts. There are often techniques and crafts that are in focus. I miss howthe subject to a greater extentcanchallengestudent`s in critical thinking, playful exploration and reflection, especially with regards to visual art. This master thesis focuses on theseperspectives for teaching in the subject arts and crafts, and discuss contemporary art's place intheschool. The thesis can be viewed as a post in the discourse about the new curriculumforarts and crafts, scheduledtobe comple…
Riflettere in gruppo come pratica emancipativa
2021
Un percorso di consapevolezza legato ad una pratica auto-osservativa e autoriflessiva all’interno del proprio contesto di lavoro è di grande importanza per la formazione personale e per un apprendimento organizzativo; implica infatti, la comprensione dei processi cognitivi individuali, organizzativi o istituzionali in cui si è immersi e costituisce uno spazio indispensabile perchè avvengano degli “apprendimenti di secondo livello”. Ciò comporta lavorare sul piano dei significati, non solo con quelli espliciti propri e altrui, ma anche con le premesse che danno origine a prassi comuni e condivise . Fondamentale in questo senso è la dimensione di gruppo perché consente di adottare una logica …
Un sistema formativo ancora da costruire. Riflessioni e proposte per la formazione iniziale degli educatori per la prima infanzia
2022
Mettendo in relazione la formazione iniziale di educatori/educatrici e insegnanti per la prima infanzia con le conoscenze relative allo sviluppo, alle modalità di apprendimento e ai bisogni dei bambini nei primi sei anni di vita, il mio intervento si centra sulla ipotesi di un curriculo formativo unitario. Individua quindi sia le aree disciplinari fondamentali e i possibili contenuti, sia i modelli formativi più efficaci per delineare un profilo professionale specifico, conducendo un approfondimento sull’apprendimento dall’esperienza all’interno dell’Università e sulle modalità di tirocinio maggiormente efficaci. In base alla normativa vigente, delineo poi le criticità del modello formativo…
The role of success expectation and task-avoidance in academic performance and satisfaction: Three studies on antecedents, consequences and correlates
2003
Abstract To investigate the prospective relationships between individuals’ success expectation and task-avoidance, and their academic achievement and satisfaction, 231 students were examined yearly throughout their university careers in Study 1. It was found that students’ success expectation predicted academic achievement and satisfaction; which, in turn, increased their subsequent success expectation. Moreover, task-avoidance predicted low academic achievement and dissatisfaction, which again was predictive of subsequent task-avoidance. In Study 2, the task-avoidant behavior, and pre-examination anxiety, of 198 students who had participated in Study 1 were examined, and compared with thei…
Anxiety, cognitive interference, and sports performance: The cognitive interference test—table tennis
2000
Abstract Task-irrelevant cognitions manifested by athletes engaged in competition may interfere with the course of an ongoing contest. The self-confrontation method was applied to 18 table tennis players ranging from intermediate to expert level. By means of this method, various types of interfering cognitions present during competition were registered and then tentatively assigned to content-related categories. Based on the content of these cognitions, a sports-specific questionnaire was developed and administered to 149 table tennis players of various levels. Employing principal component analysis, three components could be interpreted: (a) worry, self-doubt, and distraction, (b) emotiona…
Set-valued consensus for distributed clock synchronization
2009
This paper addresses the clock synchronization problem in a wireless sensor network (WSN) and proposes a distributed solution that consists of a form of consensus, where agents are able to exchange data representing intervals or sets. The solution is based on a centralized algorithm for clock synchronization, proposed by Marzullo, that determines the smallest interval that is in common with the maximum number of measured intervals. We first show how to convert such an algorithm into a problem involving only operations on sets, and then we convert it into a set–valued consensus. The solution is valid for more general scenarios where agents have uncertain measures of e.g. the position of an o…
Contribution to the study of physico-chemical properties of surfaces modified by last treatment : application to the enhancement of localized corrosi…
2011
Metallic materials are more and more used in severe conditions with particularly strong request for improving their behavior in aggressive environment and especially over long periods. The objective of this PhD work is to estimate the potentiality of a laser surface melting treatment on the improvement of the stainless steel 304L corrosion resistance, surface treatments by laser can be revisited on the basis of a recent change in the laser technology. In the frame of this work, a nano-pulsed laser fiber was chosen : it allows the treated surface to be melted for few microns in depth, followed by an ultra-fast solidification occuring with cooling rates up to 1011 K/s. The combination of thes…
Co-deposition and characterization of hydroxyapatite-chitosan and hydroxyapatite-polyvinylacetate coatings on 304 SS for biomedical devices
2019
During the last decades, biomaterials have been deeply studied to fabricate and improve coatings for biomedical devices. Metallic materials, especially in the orthopedic field, represent the most common materials used for different type of devices thanks to their good mechanical properties. Nevertheless, low/medium resistance to corrosion and low osteointegration ability characterizes these materials. To overcome these problems, the use of biocoatings on metals substrate is largely diffused. In fact, biocoatings have a key role to confer biocompatibility features, to inhibit corrosion and thus improve the lifetime of implanted devices. In this work, the attention was focused on Hydroxyapati…