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Mostrando ítems 1-10 de 139
Artículo
An Op-Amp Approach for Bandpass VGAs With Constant Bandwidth
(IEEE (Institute of Electrical and Electronics Engineers), 2018)
Two approaches to implement variable gain amplifiers based on Miller op-amps are discussed. One has true constant bandwidth while the other has essentially reduced bandwidth variations with varying gain. Servo-loops and ...
Artículo
An Evolutionary Computational Approach for Designing Micro Hydro Power Plants
(MDPI, 2019-03)
Micro Hydro Power Plants (MHPP) constitute an effective, environmentally-friendly solution to deal with energy poverty in rural isolated areas, being the most extended renewable technology in this field. Nevertheless, ...
Artículo
The Essential Role and the Continuous Evolution of Modulation Techniques for Voltage-Source Inverters in the Past, Present, and Future Power Electronics
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
The cost reduction of power-electronic devices, the increase in their reliability, efficiency, and power capability, and lower development times, together with more demanding application requirements, has driven the ...
Artículo
Extracellular Electrophysiology in the Prostate Cancer Cell Model PC-3
(MDPI, 2019-01)
Although prostate cancer is one of the most common cancers in the male population, its basic biological function at a cellular level remains to be fully understood. This lack of in depth understanding of its physiology ...
Artículo
Soluciones para la monitorización de trabajadores en obra mediante tecnologías inalámbricas
(2012)
La prevención activa puede implementar diferentes barreras de seguridad. El estado de la técnica de los sistemas de inteligencia ambiental permite construir sistemas inteligentes que, mediante la utilización de redes ...
Artículo
FVF-Based Low-Dropout Voltage Regulator with Fast Charging/Discharging Paths for Fast Line and Load Regulation
(Electronics and Telecommunications Research Institute (ETRI), 2017-06)
A new internally compensated low drop-out voltage regulator based on the cascoded flipped voltage follower is presented in this paper. Adaptive biasing current and fast charging/discharging paths have been added to ...
Artículo
Emotion AI-Driven Sentiment Analysis: A Survey, Future Research Directions, and Open Issues
(MDPI, 2019-12)
The essential use of natural language processing is to analyze the sentiment of the author via the context. This sentiment analysis (SA) is said to determine the exactness of the underlying emotion in the context. It has ...
Artículo
A Predictive Capacitor Voltage Control of a Hybrid Cascaded Multilevel Inverter With a Single DC-Link and Reduced Common-Mode Voltage Operation
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
For cascaded multilevel inverter topologies with a single dc supply, closed-loop capacitor voltage control is necessary for proper operation. This paper presents zero and reduced common-mode voltage (CMV) operation of a ...
Artículo
A text categorisation tool for open source communities based on semantic analysis
(2013)
Open source software (OSS) projects are supported by communities interacting through software repositories and mailing lists. Thousands of contributors participate in the development of the projects although they rarely ...
Artículo
Passive RFID-Based Inventory of Traffic Signs on Roads and Urban Environments
(MDPI, 2018-07)
This paper presents a system with location functionalities for the inventory of traffic signs based on passive RFID technology. The proposed system simplifies the current video-based techniques, whose requirements regarding ...