Buscar
Mostrando ítems 31-40 de 142
Trajectory Tracking Controller Based on Linear Algebra: a case study in underactuated surface vessels
(Romanian Society of Control Engineering and Technical Informatics, 2013-12)
The main difficulty in the control of an underactuated system is that the system has more outputs to be controlled than the number of independent inputs. In this paper a novel trajectory tracking controller designed ...
A curta duração do ciclo da cultura aumenta a limitação de nitrogênio da soja de alta produtividade
(Universidade Federal de Santa MariaBrasilEngenharia AgrícolaUFSMPrograma de Pós-Graduação em Engenharia AgrícolaCentro de Ciências Rurais, 2021-09-21)
Soybean productivity has doubled in the last two decades, driven by genetic improvement (earlier cultivars) and management practices. Published studies indicate limited nitrogen (N-gap) for high-yield soybeans, that is, ...
Estudo da eletrocristalização de Ni e Ni-P sobre ultramicroeletrodo de platina
(Sociedade Brasileira de Química, 2008)
This work describes a comparative study of the electrocrystallization of Ni and Ni-P on Pt ultramicroelectrodes using chronoamperometric measurements. It was possible to confirm that in all cases a progressive nucleation ...
The altering eye : contemporary international cinema
The Altering Eye is a book about the most fertile period of filmmaking
in the mid-twentieth century. This was a period of rediscovering cinema,
of returning to zero (as Jean-Luc Godard proclaimed) and advancing
beyond ...
Conformal invariance in three-dimensional rotating turbulence
(American Physical Society, 2011-05)
We examine turbulent flows in the presence of solid-body rotation and helical forcing in the framework of stochastic Schramm-Löwner evolution (SLE) curves. The data stem from a run with 15363 grid points, with Reynolds and ...
Local scenarios of emigration collapse. Evidence from the highlands of Jalisco [Escenarios locales del colapso migratorio. Indicios desde los Altos de Jalisco]
(2015)
The aim of this article is to describe some of the labor, immigration and social impacts that appear to be associated with the change in the migration pattern in one of the historical regions of Mexico-US migration. The ...
Large-scale anisotropy in stably stratified rotating flows
(American Physical Society, 2014-08)
We present results from direct numerical simulations of the Boussinesq equations in the presence of rotation and/or stratification, both in the vertical direction. The runs are forced isotropically and randomly at small ...
Diseño e implementación de un sistema de control de movimiento con actuador hidráulico para simulador de terremotos a escala sobre una máquina centrifuga
(UniandesMaestría en Ingeniería Electrónica y de ComputadoresFacultad de IngenieríaDepartamento de Ingeniería Eléctrica y Electrónica, 2010)
This article presents the non-linear mathematical model of a one degree of freedom electro-hydraulic shaking table for simulating earthquakes in soil scale models that are influenced by a centrifugal force. The problem ...
Optimizing Spectral Efficiency with Massive MIMO Systems for 5G NR Mobile Networks
(Instituto Tecnológico y de Estudios Superiores de Monterrey, 2020-12)
The fifth-generation (5G) of mobile communications defines two main operating bands: The frequency band below 6 GHz (sub-6 GHz), where the pilot contamination phenomenon limits the spectral efficiency, and the millimeter-wave ...