Browsing Investigación by Title
Now showing items 435-454 of 480
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Synthesis of Optical Filters Using Sagnac Interferometer in Ring Resonator
(11/12/2007)We propose a new synthesis method for the implementation of infinite impulse response filters, using a Sagnac interferometer within a ring resonator. This structure permits the synthesis of second-order optical functions ... -
Synthesis of Optical Filters Using Sagnac Interferometer in Ring Resonator
(2010-07-02)We propose a novel synthesis method for designing flexible, tunable non-periodic filters. It is based on a building block which is presented by first time for these purposes, being the poles position tuned by means of a ... -
A System for Mobile Learning: A Need in a Moving World
(07/04/2013)This paper presents MLEA, a mobile learning application that brings together functionalities of Android devices, Moodle LMS and needs of Mobile learning system users. The application is an answer to young adult learners ... -
Systematic review and comparison of modeling ETL processes in data warehouse
(08/23/2010)Abstract: In a Data Warehouse (DW), ETL processes (Extraction, Transformation, Load) are responsible for extracting, transforming and loading data from the data sources into the DW. A good design of these processes in the ... -
A Systematic Review for Mobile Monitoring Solutions in M-Health
(2016-09)A systematic review allows us to identify, assess, and interpret all possible relevant work associated with a question in particular or the subject of an area. Different authors can use several methodologies to learn about ... -
Teaching Software Engineering from a Collaborative Perspective: Some Latin-American Experiences
(09/03/2010)Teaching software engineering has been recognized as an important challenge for computer science undergraduate programs. Instruction in such area requires not only to deliver theoretical knowledge, but also to perform ... -
Tecnologías y enfoques para el aprovechamiento de la energía regenerativa en el transporte ferroviario: Una revisión sistemática
(2021-09)En este capítulo se presenta una revisión sistemática sobre las tecnologías de sistemas de almacenamiento de energía y sobre los enfoques para un mejor aprovechamiento. La revisión se divide en dos vías: tendencias más ... -
Temporal bounded reasoning for context-based information fusion in DoS attack detection
(07/26/2010)Security is one of the main aspects to take into account when designing and developing web services. A meaning number of mechanisms of attack can lead to a web service system crash. As a result, the web service cannot allow ... -
Time Division Multiplexing Fibre-Optic Liquid Level Sensors using a Nematic 1x2 Optical Switch
(09/01/2004)In this paper, time division multiplexing with optical switches in a multi-sensor system for level measurements with POF is reported. POF are used in the sensor heads and as transmission media along the optical network. ... -
Towards Simple Interaction in the Classroom: an NFC Approach
(IADIS International Conference e-Learning 2008IADIS International Conference e-Learning 2008, 01/01/2008)In a given environment, distributing different devices with computing capabilities around us opens up new possibilities. It allows simple and easy interaction between user and computer. In this work we propose an approach ... -
Towards Simple Interaction in the Classroom: an NFC Approach
(2008-06-30)In a given environment, distributing different devices with computing capabilities around us opens up new possibilities. It allows simple and easy interaction between user and computer. In this work we propose an approach ... -
Towards Ubiquitous Mobile Monitoring for Health-Care and Ambient Assisted Living
(01/01/2010)In this paper, we present a framework that enables patient mobile monitoring by using biometric devices (e.g., glucometers, blood pressure meters) to send data to a mobile phone via technologies such as WiFi, NFC or ... -
Trenes: material rodante del transporte ferroviario
(2013-07-05)Se le conoce como material rodante a todos los tipos de vehículos dotados de ruedas capaces de circular sobre una vía férrea cuyo principal objetivo es transportar diferentes tipos de cargas. Los mismos se pueden clasificar ... -
Tunable optical filters using compound ring resonators for DWDM
(07/28/2003)The device is based on a loop mirror in a ring resonator. The loop mirror allows tuning by changing the coupling coefficient of a directional coupler. The loop mirror is implemented using a Sagnac configuration to have the ... -
Ubiquitous and ambient-assisted living eHealth platforms for Down’s syndrome and palliative care in the Republic of Panama: A systematic review
(2018-12)In this work, the authors present two eHealth platforms that are examples of how health systems are migrating from client-server architecture to the web-based and ubiquitous paradigm. These two platforms ... -
Ubiquitous Computing and Ambient Intelligence—UCAmI
(Sensors — Open Access JournalSensors — Open Access Journal, 09/13/2019)The Ubiquitous Computing (UC) idea envisioned by Weiser in 1991 [1] has recently evolved to a more general paradigm known as Ambient Intelligence (AmI) that represents a new generation of user-centred computing environments ... -
Um Mecanismo para a Integração entre o LMS Moodle e o Site de Redes Sociais Facebook
(11/25/2011)Social networking sites are great tools for aggregating and bringing people together, in the sense that they offer various forms of interaction, provi-ding its participants the ease of communication and the ability to ... -
Uma arquitetura flexível para promover a integracao entre o moodle e sites de redes sociais
(06/06/2013)Social networking sites make it possible for Internet users to communicating, sharing, cooperating and expressing their ideas. Also known as SNSs, theywield impressive attraction within its users, who spend several daily ... -
Un algoritmo de replanificación en tiempo real basado en un índice de estabilidad de Lyapunov para líneas de metro
(2014-07-06)En este trabajo, se propone un nuevo índice basado en el método directo de Lyapunov para el diseño de un algoritmo de reprogramación en tiempo real para líneas de metro. En este estudio se utiliza una versión modificada ... -
Un Enfoque de Lógica Borrosa para el Modelado de los Flujos de Pasajeros y el Tiempo de Parada
(2012-07-04)La estimación del flujo de pasajeros y el tiempo de parada en la estación constituyen importante tareas para la planificación de los sistemas de masivos de pasajeros. Sin embargo, los métodos clásicos son difíciles de ...