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A Magnus Wind Turbine Power Model Based on Direct Solutions Using the Blade Element Momentum Theory and Symbolic Regression
(IEEE, 2017-01)A model of the power coefficient of a mid-scale Magnus wind turbine using numerical solutions of the Blade Element Momentum Theory and symbolic regression is presented. A direct method is proposed for solving the nonlinear ... -
A methodology for automated design and implementation of complex analog and digital CMOS integrated circuits applying a genetic algorithm and a CAD tool for multiobjective optimization.
(Instituto Tecnológico de Costa Rica, 2014)This dissertation proposes an automated methodology to design and optimize electronic integrated circuits, something that could be called simulation-driven optimization. The concept of Pareto optimality or the so called ... -
A methodology for the synthesis to logical netlist of an ASIC
(Instituto Tecnológico de Costa Rica, 2017)The advances in technology for manufacturing ASICs allow more features to be added. As result, and depending on the architecture of the ASIC, more functional blocks do exist to support such additional features. This imply ... -
A multi-view environment to visualize differences between alternative versions of biological taxonomies
(Instituto Tecnológico de Costa Rica, 2022)The classification of living organisms into biological taxonomies is fundamental to understand our biodiversity and to support environmental conservation efforts. The biological taxonomy system for the classification of ... -
A new approach of sperm motility subpopulation structure in donkey and horse
(Frontiers in Veterinary Science, 2021)This study aimed to characterize the sperm kinematic values with high frames per second, to define the subpopulation structure of a horse and a donkey and compare them. A total of 57 fresh semen ejaculates (26 Spanish ... -
A Parallel Framework with Block Matrices of a Discrete Fourier Transform for Vector-Valued Discrete-Time Signals
(Hindawi Publishing Corporation, 2015)This paper presents a parallel implementation of a kind of discrete Fourier transform (DFT): the vector-valued DFT. The vector-valued DFT is a novel tool to analyze the spectra of vector-valued discrete-time signals. This ... -
A port-Hamiltonian system modelling approach and passivity-based nonlinear control design for photovoltaic energy harvesting
(Instituto Tecnológico de Costa Rica, 2023)En este trabajo se dise˜nan y evaluan nuevas leyes de control no lineal para el rastreo del punto de m´axima potencia y la regulaci´on de voltaje, mediante el control de los estados de conmutaci´on de una etapa de ... -
A Recommender System for Learning Objects on a Learning Management System: Implementation Experience
(LACLO 2016, 2016)This paper aims to present the experience of implementing a recommender system for selecting learning objects (LO) for lessons through the Learning Management System (LMS) of Costa Rica Institute of Technology. Our ... -
A simple approach for the design of operational transconductance amplifiers for low power signal processing
(IEEE, 2010)A simple approach for the design, fabrication and characterization of a operational trasconductance amplifier intended for work in low power applications is reported in this work. DC Measured parameters agree with ... -
A Texture and Curvature Bimodal Leaf Recognition Model for Costa Rican Plant Species Identification
(Instituto Tecnológico de Costa Rica, 2014)In the last decade, research in Computer Vision has developed algorithms to help botanists and non-experts classify plants based on images of their leaves. Nevertheless, very few efficient tools have resulted from that ... -
A top-down design approach for an automated testing framework
(Springer Verlag, 2015)Mobile applications have become popular work tools. Portability and ease of Internet connectivity are characteristics that favor this adoption. However, mobile applications sometimes incorrectly process events associated ... -
A WDM 4x28Gbps integrated silicon photonic transmitter driven by 32nm CMOS driver ICs
(OSA - The Optical Society, 2015)A four-channel WDM silicon photonic transmitter with integrated lasers and modulators driven by low-power 32nm CMOS drivers, is demonstrated to operate at a data rate of 4×28Gb/s with BER<10-12 and power consumption of 10.0pJ/bit.