Web based interactive educational software introducing semiconductor laser dynamics: Sound Of Lasers (SOL)

In this work, educational software for intuitive understanding of the basic dynamic processes of semiconductor lasers is presented. The proposed tool is addressed to the students of optical communication courses, encouraging self consolidation of the subjects learned in lectures. The semiconductor laser model is based on the well known rate equations for the carrier density, photon density and optical phase. The direct modulation of the laser is considered with input parameters which can be selected by the user. Different options for the waveform, amplitude and frequency of thpoint. Simulation results are plotted for carrier density and output power versus time. Instantaneous frequency variations of the laser output are numerically shifted to the audible frequency range and sent to the computer loudspeakers. This results in an intuitive description of the “chirp” phenomenon due to amplitude-phase coupling, typical of directly modulated semiconductor lasers. In this way, the student can actually listen to the time resolved spectral content of the laser output. By changing the laser parameters and/or the modulation parameters,consequent variation of the laser output can be appreciated in intuitive manner. The proposed educational tool has been previously implemented by the same authors with locally executable software. In the present manuscript, we extend our previous work to a web based platform, offering improved distribution and allowing its use to the wide audience of the web.

Sound of lasers (SOL) - An audiovisual approach to semiconductor laser dynamics

We present an educational software addressed to the students of optical communication courses, for a simple visualization of the basic dynamic processes of semiconductor lasers. The graphic interface allows the user to choose the laser and the modulation parameters and it plots the laser power output and instantaneous frequency versus time. Additionally, the optical frequency variations are numerically shifted into the audible frequency range in order to produce a sound wave from the computer loudspeakers. Using the proposed software, the student can simultaneously see and hear how the laser intensity and frequency change, depending on the modulation and device parameters.

Sistema Integrado de Gestión Académica

El Sistema Integrado de Gestión Académica consiste en una plataforma software modular orientada a apoyar la labor del profesorado en la gestión docente de las asignaturas impartidas por el Departamento de Mecánica de la Escuela Técnica Superior de Ingeniería y Diseño Industrial de la Universidad Politécnica de Madrid. Durante los últimos 5 años se ha trabajado en la creación de esta plataforma que se encuentra ahora en su recta final. Es necesario aclarar que toda la plataforma desde su inicio ha sido creada por el mismo autor y que debido al tiempo disponible para la realización del TFG, éste se ha centrado en realizar mejoras sobre lo ya desarrollado y en implementar uno de los módulos. El trabajo desarrollado comienza con un estudio de plataformas educativas online. Se han valorado las alternativas de Moodle y ATutor como posibles soluciones a los requisitos planteados llegando a la conclusión de que era necesario realizar un desarrollo a medida. La plataforma consta de 3 módulos principales:  Plataforma de Gestión Docente en Internet (PGDNet)  Aplicación de Notas (AdN)  Plataforma de Entrega de Prácticas Académicas (PEPA) PGDNet está orientado a la realización de pruebas de evaluación online. El profesor tiene a su alcance un conjunto de opciones que le permiten la creación de actividades y ejercicios de diferente índole, gestionar alumnos y establecer periodos de evaluación. El sistema recoge los resultados y corrige automáticamente permitiendo además exportar los resultados, manteniendo de esta manera la compatibilidad con otros sistemas informáticos de la UPM. PGDNet ofrece además un servicio de correo electrónico para realizar comunicaciones con grupos predefinidos de alumnos, un gestor documental enlazado con las diferentes actividades y un gestor de encuestas programable a medida. AdN se integra en la plataforma como un sistema para la gestión de calificaciones y permite mantener un historial del alumno. Las materias pueden dividirse en diferentes evaluaciones con un determinado peso sobre la calificación final. La nota total se calcula en tiempo real y de forma automática. El alumno puede entrar a consultar sus calificaciones en cualquier momento. El módulo ofrece a los profesores acceso simultáneo a introducir las calificaciones e importar notas guardadas de convocatorias pasadas. PEPA es el nuevo módulo que se añade a la plataforma y el que concentra los esfuerzos de desarrollo de este TFG. Se trata de un sistema de entrega de prácticas online que permite al profesor centralizar la recogida de documentación para su posterior corrección. PEPA dispone de un sistema de plantillas de respuestas fijas utilizadas en los laboratorios que son corregidas de forma automática en la entrega. Los 3 módulos se complementan entre sí compartiendo datos y permitiendo realizar importaciones y exportaciones de información con las aplicaciones actuales de Secretaría de alumnos como puede ser la introducción de listas de alumnos.---ABSTRACT---Academic Management Framework (Sistema Integrado de Gestión Académica) is a module‐oriented software application that aims to help teachers from ETSIDI Department from UPM to manage all information related to graduate courses. The software, which has been in continuous developing during the last 5 years, is now about to be finished. It must be pointed out the fact that the entire application has been designed and implemented by the same author. However, due to time schedule restrictions in this TFG (spanish acronym for “Graduation Project”), it has been focused on developing a few improvements in the software already implemented and creating a specific new module. In the beginning, this TFG includes an educational software comparative study. Moodle and ATutor have been selected as plausible assembled solutions that would fit the requirements given. Nonetheless, the conclusion ends up with rejecting both possibilities and moving the project towards a custom‐developed software. The application is divided in 3 modules:  Network Based Academic Management Platform (Plataforma de Gestión Docente en Internet ‐ PGDNet)  Evaluation Aid Tool (Aplicación de Notas ‐ AdN)  Academic Lab‐Work Delivery Platform (Plataforma de Entrega de Prácticas Académicas ‐ PEPA) PGDNet main purpose is handling online tests for students. There are a bunch of tools available for teachers that allow them to create activities and different types of exercises, manage students and set examination schedules. The system gathers the results and marks exercises automatically. Moreover, the teacher is able to export this information which is compatible with other UPM systems. PGDNet offers a mail service, a document management system and a survey application among others. AdN adds new features to the system. It helps teachers to manage student marks by keeping a history over the years. Subjects can be divided into little parts with a different weight in the final mark. Eventually, the mark is automatically calculated and published. The application can be accessed by both students and teachers simultaneously. This module is also ready to import old marks into the current course and allow all teachers to fill in the results at the same time. PEPA, which is a new module added from scratch, concentrate this TFG efforts. It consists of a practice delivery system that gathers all student documentation in a single site for easy correction. Besides, PEPA deploys an answer template repository for laboratory training. Students fill the templates and PEPA corrects them automatically on sending. These 3 modules are integrated in a single system that allows them to share data and import information such as student lists from the Administration Department.

Desarrollo de una aplicación software para laboratorios remotos

Las prácticas en laboratorios forman una parte muy importante de la formación en todos los programas docentes. A pesar de esta importancia, la creación de un laboratorio no es una tarea fácil, ya que el hecho de equipar un laboratorio puede suponer un gran gasto económico, tanto inicial como posterior. Como solución, surge la educación a distancia, y en concreto los laboratorios virtuales, es decir, simulaciones de un laboratorio real utilizando modelos matemáticos. Por sus características y flexibilidad se han ido desarrollando laboratorios virtuales en el ámbito docente, pero no todas las áreas cuentan con tantas posibilidades o facilidades como en la electrónica. La mayoría de los laboratorios accesibles desde Internet que hay en la actualidad dentro de la enseñanza a distancia o formación online, son virtuales. El laboratorio que se ha desarrollado tiene como principal ventaja la realización de prácticas controlando instrumentos y circuitos reales de forma remota. El proyecto consiste en realizar un sistema software para implementar un laboratorio remoto en el área de la electrónica analógica, que pueda ser utilizado como complemento a las actividades formativas que se realizan en los laboratorios de los centros de enseñanza. El sistema completo también consta de un hardware controlado mediante buses de comunicación estándar, que permite la implementación de distintos circuitos analógicos, de tal forma que se pueda realizar prácticas sobre circuitos físicos reales. Para desarrollar un laboratorio lo más real posible, la aplicación que maneja el estudiante es un visor 3D. Con la utilización de un visor 3D lo que se pretende es tener un aumento de la realidad a la hora de realizar las prácticas de laboratorio remotamente. El sistema desarrollado cuenta con un sistema de comunicación basado en un modelo cliente-servidor: • Servidor: se encarga de procesar las acciones que realiza el cliente y controla y monitoriza los instrumentos y dispositivos del sistema hardware. • Cliente: sería el usuario final, que mediante un visor 3D comunica las acciones a realizar al servidor para que éste las procese. Practices in laboratories are a very important part of training in all educational programs. Despite this importance, the establishment of a laboratory is not an easy task, since the fact of equipping a laboratory can be a great economic budget, both initial and subsequent spending. As a solution, appears the education at distance (online), and in particular the virtual labs, namely simulations of a real laboratory by using mathematical models. Virtual laboratories in the field of teaching have been developed for its features and flexibility, but not all areas have so many possibilities or facilities as in electronics. The most accessible laboratories from the Internet that are currently accessible within the distance or e-learning (on-line) are virtual. The laboratory which has been developed has as a main advantage to make practices or exercises in the fact of controlling instruments and real circuits remotely. The project consists of making a software system in order to implement a remote laboratory in the area of analog electronics that can be used as a complement to the others training activities to be carried out. The complete system also consists of a controlled hardware by standard communication buses that allow the implementation of several analog circuits, in such a way that practices can control real physical circuits. To develop a laboratory as more realistic as possible, the application that manages the student is a 3D viewer. With the use of a 3D viewer, is intended to have an increase in reality when any student wants to access to laboratory practices remotely. The developed system has a communication system based on a model Client/Server: • Server: The system that handles actions provided by the client and controls and monitors the instruments and devices in the hardware system. • Client: The end user, which using a 3D viewer, communicates the actions to be performed at the server so that it will process them.

Some framework ideas for software engineering education

It is difficult, if not impossible, to find something that is not changing in computer technology: circuits, architectures, languages, methods, fields of application ... The "central object" itself of this brand of engineering, software, represents such a diverse reality (many objects) that the fact that it has only one name gives rise to considerable confusion. This issue, among others, was taken up by Fox (1) and, at this point, I would like to underline that it is more of a pragmatic issue than an academic one. Thus, Software Engineering Education moves in an unstable, undefined'world. This axiom governs and limits the. validity of all educational proposals in the area of Software Engineering and, thereforer all the ideas presented in this paper.

Educational activities for a gamified system

The objective of this dissertation is to analyze, design, and implement an activity module for a larger educational platform with the use of gamification techniques with the purpose to improve learning, pass rates, and feedback. The project investigates how to better incentivize student learning. A software requirement specification was delineated to establish the system guidelines and behavior. Following, a definition of the activities in the module was created. This definition encompassed a detailed description of each activity, together with elements that compose it, available customizations and the involved formulas. The activity high-level design process includes the design of the defined activities by use of the software methodology UWE (UML-based Web Engineering) for their future implementation, modeling requirements, content, navigation and presentation. The low-level design is composed of the database schema and types and the relating EER (Enhanced Entity-Relationship) diagram. After this, the implementation of the designed module began, together with testing in the later stages. We expect that by using the implemented activity module, students will become more interested in learning, as well as more engaged in the process, resulting in a continuous progress during the course.---RESUMEN---El objetivo de este trabajo es analizar, diseñar e implementar un módulo de actividades didácticas que formará parte de una plataforma educativa, haciendo uso de técnicas de gamificación con la finalidad de mejorar el aprendizaje, ratio de aprobados y retroalimentación para los alumnos. El proyecto investiga como incentivar mejor el aprendizaje estudiantil. Se trazó una especificación de requisitos de software para establecer las pautas del sistema y su comportamiento. A continuación, se definieron las actividades del módulo. Esta definición abarca una descripción detallada de cada actividad, junto a los elementos que la componen, las configuraciones disponibles y las formulas involucradas. El proceso de diseño de alto nivel incluye el diseño de las actividades definidas usando la metodología de software UWE (UML-based Web Engineering) para su futura implementación, requisitos de modelaje, contenido, navegación y presentación. El diseño de bajo nivel está compuesto por el esquema y tipos de la base de datos y el diagrama de entidad-relación correspondiente. Tras esto se realizó la implementación y pruebas de parte del sistema. Se espera que usando el módulo de actividades implementado, los estudiantes muestren un mayor interés por aprender, así como estar más involucrados en el proceso, resultando en un progreso más continuo durante el curso.

Novel educational assessment for building structures: Automatic evaluation of on-line graphics

This article presents a new automatic evaluation for on-line graphics, its application and the numerous advantages achieved applying this developed correcting method. The software application developed by the Innovation in Education Group “E4”, from the Technical University of Madrid, is oriented for the online self-assessment of the graphic drawings that students carry out as continuous training. The adaptation to the European Higher Educational Area is an important opportunity to research about the possibilities of on-line education assessment. In this way, a new software tool has been developed for continuous self-testing by undergraduates. Using this software it is possible to evaluate the graphical answer of the students. Thus, the drawings made on-line by students are automatically corrected according to the geometry (straight lines, sloping lines or second order curves) and by sizes (depending on the specific values which define the graphics).

Software architecture implementation based on OpenSim

One of the objectives of the European Higher Education Area is the promotion of collaborative and informal learning through the implementation of educational practices. 3D virtual environments become an ideal space for such activities. On the other hand, the problem of financing in Spanish universities has led to the search for new ways to optimize available resources. The Technical University of Madrid requires the use of laboratories which due to their dangerousness, duration or control of the developed processes are difficult to perform in real life. For this reason, we have developed several 3D laboratories in virtual environment. The laboratories are built on open source platform OpenSim. In this paper it is exposed the use of the OpenSim platform for these new teaching experiences and the new design of the software architecture. This architecture requires the adaptation of the platform to the needs of the users and the different laboratories of our University. We will explain the structure of the implemented architecture and the process of creating and configuring it. The proposed architecture is decentralized, each laboratory is housed in different an educational center. The architecture adds several services, among others, the creation and management of users automated, communication between external services and platforms in different program languages. Therefore, we achieve improving the user experience and rising the functionalities of laboratories.