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Mostrando ítems 1-10 de 43
Artículo
Millisecond radiative recombination in poly(phenylene vinylene)-based light-emitting diodes from transient electroluminescence
(American Institute of Physics, 2007-06)
The current and electroluminescence transient responses of standard poly phenylene vinylene -based light-emitting devices have been investigated. The electroluminescence time response is longer milliseconds scale than ...
Artículo
Determinación de las variables de diseño en el desarrollo de una herramienta de elearning
(Secretariado de Publicaciones de la Universidad de Sevilla, 2006)
En este artículo se muestran, a través de mapas bidimensionales, los resultados procedentes de un proyecto de investigación mediante el cual se han identificado las variables externas a tener en cuenta en el diseño de una ...
Artículo
Low-voltage wide gm adjustable range highly linear bicmos OTA
(2005)
A low distortion low-voltage BiCMOS OTA with wide gm adjustment range and constant input range is presented. It is based on a highly linear voltage-to-current converter input stage merged with translinear loops that implement ...
Artículo
Microprocessor and FPGA interfaces for in-system co-debugging in field programmable hybrid systems
(Elsevier, 2005)
Modern trends in technology require efficient control and processing platforms based on connected software-hardware subsystems. Due to their complexity and size, algorithms implemented on these platforms are difficult to ...
Artículo
Power-electronic systems for the grid integration of renewable energy sources: a survey
(Institute of Electrical and Electronics Engineers (IEEE), 2006)
The use of distributed energy resources is increasingly being pursued as a supplement and an alternative to large conventional central power stations. The specification of a powerelectronic interface is subject to ...
Artículo
A technological acceptance of e-learning tools used in practical and laboratory teaching, according to the European higher education area
(Taylor & Francis, 2008)
The application of scientific tools to analyse the use of Internet-based e-learning tools in academic settings is in general an ignored area. E-learning tools are actually an emergent topic as a result of the new ideas ...
Artículo
An empirical study of the driving forces behind online communities
(2009)
Purpose – A large variety of online communities have emerged during the last years as a result of the challenges faced by both the business and scientific worlds. This trend has also been promoted by the development of ...
Artículo
DC-Voltage-Ratio Control Strategy for Multilevel Cascaded Converters Fed With a Single DC Source
(Institute of Electrical and Electronics Engineers, 2009)
Recently, a multilevel cascaded converter fed with a single DC source has been presented. An analysis of the steady-state working limits of this type of converter is presented in this paper. Limits of the maximum output ...
Artículo
Virtual communities as a resource for the development of OSS projects: the case of Linux ports to embedded processors
(2009)
Open source software (OSS) projects represent a new paradigm of software creation and development based on hundreds or even thousands of developers and users organised in the form of a virtual community. The success of ...
Artículo
The Age of Multilevel Converters Arrives
(Institute of Electrical and Electronics Engineers (IEEE), 2008)
This work is devoted to review and analyze the most relevant characteristics of multilevel converters, to motivate possible solutions, and to show that we are in a decisive instant in which energy companies have to bet on ...