Search results for "lcsh:T"
showing 10 items of 2832 documents
Las necesidades formativas del profesorado en TIC: perfiles formativos y elementos de complejidad
2011
Las necesidades formativas del profesorado en las Tecnologías de la Información y de la Comunicación (TIC) se constituyen como uno de los aspectos claves para la integración de las TIC en la práctica educativa diaria, junto con las competencias en TIC y el uso de estos recursos tecnológicos por parte del profesorado. El objetivo de este artículo es establecer perfiles formativos del profesorado y relacionarlos con sus competencias en TIC y el uso de las mismas, junto con factores personales y contextuales. Para ello, se ha utilizado un diseño de encuesta, con una muestra de 868 profesores y profesoras de Educación Primaria y Secundaria de la Comunidad Valenciana, siendo el instrumento de re…
Wireless Sensor Network Operating System Design Rules Based on Real-World Deployment Survey
2013
Wireless sensor networks (WSNs) have been a widely researched field since the beginning of the 21st century. The field is already maturing, and TinyOS has established itself as the de facto standard WSN Operating System (OS). However, the WSN researcher community is still active in building more flexible, efficient and user-friendly WSN operating systems. Often, WSN OS design is based either on practical requirements of a particular research project or research group's needs or on theoretical assumptions spread in the WSN community. The goal of this paper is to propose WSN OS design rules that are based on a thorough survey of 40 WSN deployments. The survey unveils trends of WSN applic…
Time-Frequency Characteristics of In-Home Radio Channels Influenced by Activities of the Home Occupant
2019
While aging is a serious global concern, in-home healthcare monitoring solutions are limited to context-aware systems and wearable sensors, which may easily be forgotten or ignored for privacy and comfort reasons. An emerging non-wearable fall detection approach is based on processing radio waves reflected off the body, who has no active interaction with the system. This paper reports on an indoor radio channel measurement campaign at 5.9 GHz, which has been conducted to study the impact of fall incidents and some daily life activities on the temporal and spectral properties of the indoor channel under both line-of-sight (LOS) and obstructed-LOS (OLOS) propagation conditions. The time-frequ…
THE EVOLUTION OF COMPOUNDS IN THE AGING PROCESS OF THE DRĂGĂŞANI CABERNET SAUVIGNON WINES
2011
This paper presents the influence of raw material on wine aging and determining of the optimal duration of wine aging in oak vessels and glass vessels. The potential quality of red wines from Cabernet Sauvignon Drăgăşani is highlighted more in the aging process to oak vessels and glass vessels.
Direct Measurement of Mammographic X-Ray Spectra with a Digital CdTe Detection System
2012
In this work we present a detection system, based on a CdTe detector and an innovative digital pulse processing (DPP) system, for high-rate X-ray spectroscopy in mammography (1–30 keV). The DPP system performs a height and shape analysis of the detector pulses, sampled and digitized by a 14-bit, 100 MHz ADC. We show the results of the characterization of the detection system both at low and high photon counting rates by using monoenergetic X-ray sources and a nonclinical X-ray tube. The detection system exhibits excellent performance up to 830 kcps with an energy resolution of 4.5% FWHM at 22.1 keV. Direct measurements of clinical molybdenum X-ray spectra were carried out by using a pinhole…
The difficulties of adapting university teaching for students with disabilities : an analysis focussed on inclusive guidance
2012
The need for specific attention for the personal, social, academic and professional development of students with disabilities is a challenge that the university is committed to. Although significant progress has been made, promoted by an inclusive educational approach, there are still many difficulties faced by students to intergrate into university education. To advance a deeper understanding of the issues affecting these students, research has been conducted with a sample of 113 students with disabilities from different centers in the University of La Laguna (Spain). The results have highlighted, the lack of guidance and information regarding access to university courses, the need to impl…
Divided Wall Column Modeling and Simulation in an Open-Source Environment
2020
The divided wall column (DWC) can achieve sharp separations of three or more components in a single shell, substituting conventional sequences of two or more binary distillation columns, with lower expenses. Despite these advantages, DWC models are not available in commercial chemical process simulators. To simulate DWC, users must employ instances of conventional column model and couple them in different configurations. In this paper, a DWC model was developed in EMSO (Environment for Modeling, Simulation and Optimization). DWC model was then used for simulating the separation of an equimolar mixture of three hydrocarbons. Results show that, depending on the number of trays, DWC presented …
Real-Time Minimization Power Losses by Driven Primary Regulation in Islanded Microgrids
2020
Islanded microgrids are small networks that work independently from the main grid. The frequency and voltage in islanded microgrids are affected directly by the output power of distributed generators and power demand variations. In this work, a real-time driven primary regulation, which relies on optimized P-f droop coefficients, is proposed. In all operating conditions, it minimizes the power losses for islanded microgrids. The proposed configuration will allow the optimization modules to interact with each other and adjust parameters producing a suitable power sharing among generators. The methodology is tested based on a hardware-in-the-loop experimental set-up where distributed generato…
Dynamic Sustainability Assessment Tool: Case Study of Green Biorefineries in Danish Agriculture
2020
In this work, a novel, dynamic sustainability assessment tool is presented and validated in a case study. This tool combines two methods&mdash
Estudio de caso múltiple con historias de vida en el grado de educación infantil: aprendizaje-servicio en la didáctica de la educación física
2015
Este trabajo recoge un estudio sobre la aplicación del Aprendizaje-Servicio (APS) en el área de Educación Física del Grado de Maestro de Educación Infantil. Concretamente, emplea las Historias de Vida como herramienta de investigación cualitativa para conocer el perfil básico del alumnado, así como para profundizar sobre el desarrollo de habilidades sociales y valores ético-cívicos. El trabajo muestra así la adecuación de las Historias Vida como herramienta para valorar la influencia del APS en el alumnado, en tanto que los resultados obtenidos permiten conocer y ahondar sobre determinados rasgos de su personalidad, su contexto familiar y profesional, y los aprendizajes y desarrollo persona…