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1. Implementing Unplugged CS and Use-Modify-Create to Develop Student Computational Thinking Skills: -- A Nationwide Implementation in Colombia

Author

Vieira, Camilo, Gómez, Ricardo L., Gómez, Margarita, Canu, Michael, and Duque, Mauricio

Abstract

This paper describes the implementation and student learning outcomes of a nationwide professional development program for lower secondary and upper secondary school teachers to integrate computational thinking into the K-12 curriculum. Computational thinking comprises important concepts and skills that all students should develop to take an active role in a global society. However, teaching computational thinking is challenging. There are few teachers with the knowledge and skills to integrate computation into their courses. In this program, the participating teachers implemented a set of lesson plans that included both unplugged activities to scaffold student learning, and 'plugged' activities following a use-modify-create learning progression with the Micro:bit device to practice these skills. The study used a quasi-experimental design to compare students' level of computational thinking between the program participants and a control group. The results suggest a positive effect of the learning activities on student computational thinking knowledge and skills as compared to the control group. This result persists after controlling for school context and student gender. This study provides an explicit approach to implementing these activities in the context of a developing country and assesses their effectiveness in a large-scale study.

Published
2023

3. Kinematic Model Analysis and ROS Control of Cable Driven Continuous Robot Manipulator

Author

Leon-Rodriguez, Hernando, Moncada, Yefry, Mosqueda, Simon, Murrugarra, Cecilia, Canu, Michael, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Cortes Tobar, Dario Fernando, editor, Hoang Duy, Vo, editor, and Trong Dao, Tran, editor

Published
2021
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5. Active Learning Session Based on Didactical Engineering Framework for Conceptual Change in Students' Equilibrium and Stability Understanding

Author

Canu, Michael, Duque, Mauricio, and de Hosson, Cécile

Abstract

Engineering students on control courses lack a deep understanding of equilibrium and stability that are crucial concepts in this discipline. Several studies have shown that students find it difficult to understand simple familiar or academic static equilibrium cases as well as dynamic ones from mechanics even if they know the discipline's criteria and formulae. Our aim is to study the impact of a specific and innovative classroom session, containing well-chosen situations that address students' misconceptions. We propose an example of Active Learning experiment based both on the Didactical Engineering methodology and the Conceptual Fields Theory that aims at promoting a conceptual change in students. The chosen methodology allows, at the same time, a proper design of the student learning activities, an accurate monitoring of the students' rational use during the tasks and provides an internal tool for the evaluation of the session's efficiency. Although the expected starting conceptual change was detected, it would require another activity in order to be reinforced.

Published
2017
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7. Perceptions d’enseignants chercheurs sur la formation à la pédagogie universitaire: Étude de deux dispositifs institutionnalisés pour les néo-maîtres de conférences

Author

Cassignol, Florence, Dupré, Aurélie, Balhawan Fussel, Maya-Héléne, Canu, Michael, Lepers, Éléonore, Poteaux, Yanèle, Université de Perpignan Via Domitia (UPVD), and Université de Lille

Subjects
pedagogy, organizational socialization, professional identity, teacher training, beginning teachers, [SHS]Humanities and Social Sciences
Abstract

International audience; Higher education teachers training in pedagogy was institutionalized by the recent compulsory national plan for beginning teachers at university. Beyond the relevance of such a training program in pedagogy in higher education, pedagogy at university level as a field of research could be questioned. In this article we discuss this through beginning teachers’statements recently trained in two french universities’ programs. This issue was investigated using organisational sociology and psychology frameworks. Semi-structured interviews allowed us to notice an evolution in their training program perception. The results tend to show that the devices act on different axes of organizational socialization while promoting professional development in pedagogy.; La formation pédagogique des enseignants-chercheurs s’est vue récemment institutionnalisée par la mise en place, au niveau national, d’une obligation de formation pour les maîtres de conférences nouvellement recrutés. Au-delà des considérations sur la pertinence d’une telle formation, la question de la reconnaissance et du positionnement de la pédagogie universitaire comme champ de formation et de recherche mérite d’être posée. Cette recherche s’intéresse à la manière dont des enseignants, nouvellement formés à travers les dispositifs mis en place dans deux universités françaises, perçoivent la formation. Les propos des enseignants seront analysés au regard de cadres de références issus de la psychologie et de la sociologie des organisations. Nos résultats tendent à montrer que les dispositifs mis en place agiraient sur différents axes de la socialisation organisationnelle tout en favorisant un développement professionnel en pédagogie.

Published
2022

8. Kinematic model analysis and ros control of cable driven continuous robot manipulator

Author

León-Rodríguez, Hernando, Moncada Linares, Yefry, Mosqueda, Simon, Murrugarra Quiroz, Cecilia, Canu, Michael, Murrugarra Quiroz, Cecilia [0000-0001-9439-5418], and León-Rodríguez, Hernando [0000-0001-5660-3028]

Subjects
Computer Science::Robotics, Mathematical model, Continuous redundant robot, Cable robotic system, End effector
Abstract

This paper describes the developed of cable continues redundant manipulator and its kinematic model analysis. The goal is to determine the accuracy of the experimental prototype with the constant curvature kinematic model. The experimental validation of the constant curvature kinematic model is evaluated to establish a relation between the mathematical model and continuum robot, and its feasibility of applying for any type of continuous redundant structure by computing the end effector trajectory based on the displacement of passive cables located along the structure. The continuous redundant prototype robot is composed by 2 segments with 7 modules sections powered by 6 driven cables where each segment is controlled with 3 lineal motors. The length of the segment is desired but it is also allows to add modular sections and connect them like serial chain. The radius of concave and/or convex curvature allows the robot manipulator to follow different trajectories and displacements in their workspace. The paper also describes the relevant components and the position feedback control implemented via ROS.

Published
2020

9. Understanding the Shinyei PPD24NS low-cost dust sensor

Author

Canu, Michael, Galvis, Boris, Morales, Ricardo, Ramírez, Omar, and Madelin, Malika

Subjects
Materia particular, Sensores ópticos, Sensores de bajo costo, Optical sensors, Air quality, Sensores de polvo, Calidad del aire, Dust sensors, Particulate matter, Low-cost sensors
Abstract

La medición de la calidad del aire es un tema de gran interés para cualquier país por motivos de salud y medioambientales. Este problema es más crítico en los países de bajos ingresos ya que la calidad del aire es generalmente peor que en los países desarrollados y los gobiernos dan menos presupuesto para liderar la investigación y la política ambiental. Esto explica la creciente demanda de sensores ópticos de polvo de bajo costo como el Shinyei PPD24NS durante los últimos años. Sin embargo, esos sensores presentan resultados mixtos en términos de precisión y repetibilidad, especialmente en el caso de nuevas aplicaciones como las de contexto móvil. Además, existe poca o confusa información sobre el funcionamiento y las condiciones de uso de esos sensores y el fabricante no proporciona ninguna guía completa. El presente artículo tiene como objetivo llenar este vacío, proporcionando un estudio real del funcionamiento del sensor interno. Esto incluye: un análisis detallado, teórico y práctico, del diagrama eléctrico, una caracterización del flujo de aire a través de la cámara óptica, un análisis del comportamiento de salida basado en la concentración de material particulado y una pauta de aspectos algorítmicos. El artículo finaliza proporcionando consejos y recomendaciones útiles, así como algunas pistas para mejorar su precisión para nuevas aplicaciones. Air quality measurement is a topic of a great interest for any country due to health and environmental reasons. Tis issue is more critical in low-incomes countries since the air quality is generally worse than in developed countries and the governments give fewer budget to lead environmental policy and research. This explains the increasing demand for low-cost dust optical sensors like the Shinyei PPD24NS during the last years. However, those sensors present mixed results in terms of precision and repeatability, especially in case of new applications like the ones in moving context. Moreover, few or confuse information exists on those sensors functioning and conditions of use and the manufacturer does not provide any comprehensive guideline. The present article aims at filling this gap, providing a real study of the internal sensor operating. This includes: a detailed, theoretical and practical, analysis of the electric diagram, a characterization of the airflow through the optical chamber, an output behavior analysis based on particulate matter concentration and some algorithmic issues guideline. The article ends by providing useful tips and recommendations as well as some tracks to improve its precision for new applications.

Published
2018

13. From Mutually Non-Blocking to Switched Non-Blocking DES

Author

Canu, Michael, Rakoto-Ravalontsalama, Naly, Mines Nantes (Mines Nantes), Universidad de los Andes [Bogota] (UNIANDES), Institut de Recherche en Communications et en Cybernétique de Nantes (IRCCyN), Mines Nantes (Mines Nantes)-École Centrale de Nantes (ECN)-Ecole Polytechnique de l'Université de Nantes (EPUN), and Université de Nantes (UN)-Université de Nantes (UN)-PRES Université Nantes Angers Le Mans (UNAM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE]
Abstract

National audience; The mutually non-blocking property of discrete-event systems has been introduced by Fabian and Kumar (1997). In this paper, we extend the property of mutually non-blocking from 2 to 3 elements. We also propose a definition of switched non-blocking system, and we show the mutually non-blocking property is included in the switched non-blocking property. We illustrate the result with an example of protocol conversion with switched specification.; La propriété de système à événements discrets mutuellement non-bloquants a été introduite par Fabian and Kumar (1997). Dans ce papier, nous proposons une extension de cette propriété de 2 à 3 éléments. Nous donnons ensuite une définition de système non-bloquant par commutations, et nous montrons que la propriété "mutuellement non-bloquant" est incluse dans celle de "non-bloquant par commutations". Nous illustrons ce resultat à travers un exemple de système de conversion de protocole, dans lequel le protocole commute entre deux spécifications.

Published
2013

14. Active Learning session based on Didactical Engineering framework for conceptual change in students’ equilibrium and stability understanding.

Author

Canu, Michael, Duque, Mauricio, and de Hosson, Cécile

Subjects
*ACTIVE learning, *ENGINEERING education, *ENGINEERING students, *EQUILIBRIUM, *STABILITY (Mechanics), *DIDACTIC method (Teaching method)
Abstract

Engineering students on control courses lack a deep understanding of equilibrium and stability that are crucial concepts in this discipline. Several studies have shown that students find it difficult to understand simple familiar or academic static equilibrium cases as well as dynamic ones from mechanics even if they know the discipline’s criteria and formulae. Our aim is to study the impact of a specific and innovative classroom session, containing well-chosen situations that address students’ misconceptions. We propose an example of Active Learning experiment based both on the Didactical Engineering methodology and the Conceptual Fields Theory that aims at promoting a conceptual change in students. The chosen methodology allows, at the same time, a proper design of the student learning activities, an accurate monitoring of the students’ rational use during the tasks and provides an internal tool for the evaluation of the session’s efficiency. Although the expected starting conceptual change was detected, it would require another activity in order to be reinforced. [ABSTRACT FROM PUBLISHER]

Published
2017
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15. Academic Evaluation Protocol for Monitoring Modalities of Use at an Automatic Control Laboratory: Local vs. Remote.

Author

BARRIOS, ARQUÍMEDES, DUQUE, MAURICIO, CANU, MICHAEL, VILLA, JOSE LUIS, CHEVREL, PHILIPPE, GRISALES, VICTOR H., PRIETO, FLAVIO, and PANCHE, STIFEN

Subjects
AUTOMATIC control systems, ENGINEERING laboratories, ENGINEERING education in universities & colleges, TRAINING of engineers, INTERNET in education, LEARNING, ADULTS, HIGHER education
Abstract

This article describes an Academic Evaluation Protocol (AEP) designed and implemented in order to monitor various modalities of using an Automatic Control Laboratory by analyzing the quality of work that can be obtained from a specific student group when the proposed experimental practice is being conducted according to a particular type of lab-work modality. To serve this purpose, the types of use-modalities associated to different lab-works are classified as follows: Local Real Laboratory (RL), Remote Laboratory (R@L) and Local plus Remote Laboratory (RL+R@L). To estimate how a specific lab-work modality impacts upon the development of an experimental practice, parameters such as average utilization time and the ABET-Indicators are used. The results obtained from this pedagogical instrument are analyzed by various means, namely the ANOVA Test, a Descriptive Statistical Technique and Wilcoxon Testing. The findings reveal that the student groups involved in experimental lab-practices following the RL and RL+R@L modalities achieve better performance (when conducting the automatic control laboratory) than the student groups served with the remote system only. The analysis performed indicates that there is no statistical difference between working at the Local Laboratory (RL) or at a Local plus Remote Laboratory (RL+R@L). As a result, the use of the remote system combined with the local one does not improve significantly the ABET score, ruling out the idea that by placing special interest in using only the remote system, an improvement in students' comprehension is achieved. [ABSTRACT FROM AUTHOR]

Published
2013

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