Open and Flexible Embedded System Applied to Positioning and Telecontrol

This paper presents the development and testing of an open and flexible embedded system applied to positioning and telecontrol (OFESAPO) for outdoor applications. The system is composed of a control center (CC) and a set of remote terminal units (RTUs); the International Electrotechnical Commission (IEC) 60870-5 series has been chosen for communication among them. This is a standard protocol of real-time telecontrol applications. The CC is a personal computer, and the RTUs are based on open hardware and software. The RTU hardware is an embedded system, i.e., a system-on-chip-type design using fieldprogrammable gate array that has been programmed with the open-core LEON running Linux operating system. For prototyping, the GR-XC3S-1500 board has been used. As there is no open source code available for the IEC standard protocols, an open source code has also been implemented. Hence, both the hardware and the software are open source in OFESAPO. Several tests have been made to show the system’s limitations and the suitability for real-time applications. A prototype has also been tested in a real environment, where the real position of two moving RTUs was shown by a CC using Google Map.Junta de Andalucía p08-TIC-363

Simulación de un protocolo de nivel mac basado en IEEE 802.16 para el laboratorio de arquitectura de redes I

Este trabajo presenta nuestra experiencia en el desarrollo de una herramienta de simulación de protocolos de nivel MAC basados en el estándar IEEE 802.16 [1]. El empleo de esta herramienta en el laboratorio ayuda a los alumnos en el estudio y comprensión de protocolos de redes de última milla. En particular, se ha definido un protocolo de nivel MAC para sistemas PLC outdoor que sigue algunas de las descripciones para el protocolo MAN wireless descrito en la norma IEEE 802.16

Fingerprint indoor position system based on OpenMAC

This paper presents a work in progress for the developing of a fingerprint indoor position system based on OpenMAC, an IEEE 802.15.4 embedded software implementation from Atmel to be used in different scenarios like e_health, ambient living or smart building. The system is thought to work as another one that we have yet developed but using the BitCloud Stack, a full-featured, second generation embedded software stack from the same supplier, but improving it. The first steps followed up in the system development are shown in this paper.Junta de Andalucía p08-TIC-363

The IEC-60870-5 standard for a personal server applied to telemedicine

This paper presents a proposal of a flexible telemedicine system for remote patient monitoring. It can be used in different kind of environments where there is only available low speed transmission links like Radio Frequency. This proposal includes the use of a previous work where the IEC-60870-S standard was applied to the development of an open and flexible RTU (Remote Terminal Unit) based in open hardware, a SoCtype design using a FPGA programmed with the open core LEON and open source, so both the hardware and the ISO are open source.Junta de Andalucía p08-TIC-363

Upgrading of Traditional Electric Meter Into Wireless Electric Meter Using ZigBee Technology

Since the electric generating, distributing and marketing has been possible; the Electric Meter was introduced and developed along the years, but never like this time. The digital technology, the wireless communication, and the computer systems have dramatically changed the Electric meter generation from Traditional Meter to Automatic Meter and now to Smart Meter. Their differences lie in how to collect and process information, and the amount of information they can provide. Even so the traditional meter reading has been long used, and it is still one of the most common ways for meter reading. This method, however, has their disadvantages which are the result of human basis reading method that uses. If the reading problem is solved by adding a simple circuit, which makes it automatic it will be still useful method of reading. In this paper it is described a prototype for Automatic Meter Reading (AMR) system that uses a Traditional meter, ZigBee modules, and Mesh network. As result the system gives, full capability of automatic meter even some features of smart meter too. This experiment has an important result for developing country like Ethiopia, which almost 99% its meters are the Traditional meter

Estudio de mercado para la comercialización de limón pérsico en el departamento de San Miguel año 2006

Los productores de limón pérsico, forman parte de la actividad económica de nuestro país; en la zona oriental existen muchos productores que se dedican a ésta actividad, así como la empresa FRUTOR S.A. DE C.V., los cuales carecen de un estudio de mercado para mejorar la comercialización del limón pérsico. El propósito de la investigación es formular una propuesta de diseño de un plan de comercialización para incrementar la demanda del limón pérsico en el departamento de San Miguel. Para la realización de la investigación se utilizó el método probabilístico de muestreo aleatorio simple, realizando un cuestionario para productores y otro para consumidores, los cuales revelaron que el fruto tiene aceptación por parte de los consumidores de la ciudad migueleña. Con base en los resultados obtenidos de la investigación, se diseño una propuesta de diseño de plan de comercialización, en donde se proponen estrategias adecuadas a sus fines y la determinación del presupuesto, para los productore

Spanish adaptation of meaning-centered psychotherapy for participants with cancer: Study protocol of a randomized control Trial

Background: Meaning-Centered Psychotherapy (MCP) is effective in improving meaning in life, hope, optimism, self-efficacy, well-being, and quality of life, and in reducing stress in people with cancer. However, all the studies on the application of MCP in cancer patients have been carried out in Anglo-Saxon samples. Therefore, it is necessary to adapt and verify the efficacy of MCP in populations that speak languages other than English, such as Spanish. Moreover, to expand the data supporting the efficacy of MCP for cancer patients, it would be necessary to compare MCP to other active therapies such as Cognitive Behavioral Therapy (CBT). Methods: The aims of the proposed study are: the first objective is to verify the efficacy of the MCP intervention for Spanish participants with cancer in a randomized control trial (RCT) comparing it to CBT. The second objective is to analyze the feasibility and acceptance of MCP in Spanish participants with cancer. The third objective is to analyze whether the changes produced in the meaning in life dimensions (presence, search, comprehension, purpose, and mattering) will predict changes in anxiety, depression, quality of life, etc. Our research team adapted MCP for Spanish participants with cancer. This paper presents the study protocol. The study design consists of a two-arm RCT with two conditions: MCP and CBT, where participants will be randomized to one of the two groups. Eligible participants will be adults with stage I, II, and III cancer who were treated with curative intent and had completed their main medical treatment (surgery, radiotherapy, or chemotherapy). Participants will be assessed at pretreatment, post-treatment, and 6-month follow-up. The intention-to-treat principle will be used when analyzing data, using mixed-effects models with full information and maximum likelihood estimation. Discussion: This study will provide results that confirm the efficacy of the MCP in Spanish participants with cancer. Trial Registration: ClinicalTrials.gov; https://register.clinicaltrials.gov/prs/app/template/Home.vm?uid=U0005WS9&ts=4&sid=S000BOTT&cx=bvr2ue, identifier NCT0519734

Análisis de distintas metodologías de evaluación en prácticas de laboratorio en asignaturas de Redes de Computadores

En este artículo se presenta una comparativa entre distintos esquemas de evaluación del alumnado en las prácticas de laboratorio de Redes de Computadores utilizados en los últimos años. Se analizan tres esquemas distintos: 1) Evaluación basada en memorias teóricas y cuestionarios experimentales, 2) Evaluación práctica a práctica basada en WebCT, 3) Evaluación final basada en WebCT. Estos distintos sistemas persiguen como objetivos aplicar técnicas de evaluación continua, lograr un sistema de calificación individualizado y, finalmente, homogeneizar las calificaciones prácticas y teóricas. Se presenta un análisis de cada uno de estos sistemas, en base al cumplimiento o no de estos objetivos usándose, para ello, los datos estadísticos de los seis últimos cursos