Buscar
Mostrando ítems 1-10 de 2509
Fast three-dimensional k-space trajectory design using missile guidance ideas
(WILEY, 2004)
Three-dimensional (3D) k-space trajectories are needed to acquire volumetric images in MRI. While scan time is determined by the trajectory efficiency, image quality and distortions depend on the shape of the trajectories. ...
Three dimensional k-space trajectory design using genetic algorithms
(ELSEVIER SCIENCE INC, 2003)
Image quality and total scan time in MRI are determined in large part by the trajectory employed to sample the Fourier space. Each trajectory has different properties like coverage of k-space, scan time, sensitivity to ...
Fast three-dimensional k-space trajectory design using missile guidance ideas
(2004)
Three-dimensional (3D) k-space trajectories are needed to acquire volumetric images in MRI. While scan time is determined by the trajectory efficiency, image quality and distortions depend on the shape of the trajectories. ...
Undersampling k-space using fast progressive 3D trajectories
(WILEY, 2005)
In 3D MRI, sampling k-space with traditional trajectories can be excessively time-consuming. Fast imaging trajectories are used in an attempt to efficiently cover the k-space and reduce the scan time without significantly ...
Microgenetic Analysis of Thought Trajectories: A Mixed Design
(2021)
This article reports the results of an investigation that used a mixed methodology
with microgenetic orientation, to observe the genetic development of small acts
of thought and their bodily manifestations. A qualitative ...
A linear-interpolation-based controller design for trajectory tracking of mobile robots
(Pergamon-Elsevier Science Ltd, 2010-03)
This work presents a novel linear interpolation based methodology to design control algorithms for the trajectory tracking of mobile robotic systems. Particularly, a typical nonlinear multivariable system-a mobile robot-is ...
Three dimensional k-space trajectory design using genetic algorithms
(ELSEVIER SCIENCE INC, 2003)
Image quality and total scan time in MRI are determined in large part by the trajectory employed to sample the Fourier space. Each trajectory has different properties like coverage of k-space, scan time, sensitivity to ...
Linear algebra and optimization based controller design for trajectory tracking of typical chemical process
(Planta Piloto de Ingeniería Química, 2014-12)
This paper presents a new controller design to tracking trajectory of a typical chemical process. The plant model is represented by numerical methods and, from this approach, the control actions for an optimal operation ...
Trajectory tracking of underactuated surface vessels: a linear algebra approach
(Institute of Electrical and Electronics Engineers, 2013-07)
This brief presents the design of a controller that allows an underactuated vessel to track a reference trajectory in the x−y plane. A trajectory tracking controller designed originally for robotic systems is applied for ...
Trajectory-tracking controller design with constraints in the control signals: a case study in mobile robots
(Cambridge University Press, 2014-05)
This paper is a continuation of a previous work of the authors, Scaglia et al., 1. A method is presented to choose the controller parameters such that, the values of the control actions do not exceed the maximum allowable ...