Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 103 for “"Linear Dynamics"”.
-
Non-linear dynamics of mooring lines
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1997.
-
Non-linear dynamics and critical transitions in neonatal brain
Neonatal seizure detection methods have improved the quality of life for new born babies. However, most models suffer from an increased amount of false positive detections that restricts them from being used live in an Neonatal Intensive Care Unit. If the dynamical mechanisms responsible for …
-
CONSENSUS OF MULTI-AGENT SYSTEM FOR AGENTS WITH UNSTABLE LINEAR DYNAMICS
… where each agent is described by a general linear system. The focus is on the case where agent dynamics are unstable. The aim is to establish a set of conditions for consensus of MAS where agents have general linear unstable dynamics under various communication network settings. The adopted …
-
Non-linear dynamics identification using Gaussian process prior models within a Bayesian context.
… generally unexplored within the realm of nonlinear dynamic systems, where parametric methods are much more mature and more widely accepted. This thesis seeks to explore diverse aspects of mathematical modelling of nonlinear dynamic systems using Gaussian process prior models, a simple yet …
-
Non-linear dynamics and stock return predictability on the JSE securities exchange of South Africa
… both the APT and the CAPM are single-period linear models based on the assumption that security prices follow a normal strong random walk process or, equivalently, that security returns are normally and linerly distributed. A crucial implication or this assumption is that the prices and …
-
Analysis of Ergonomics and Highly Non-linear Dynamics of Surgical Motions and Muscle Activations in Minimally Invasive Surgery
Minimally invasive surgery (MIS) is becoming increasing popular and widely adopted on account of relative post-operative advantages (shorter hospital stays, less scarification, trauma and post-operative pain) it offers patients when compared to open surgery. Nonetheless, the surge in demand for MIS …
-
Time-series analysis using orthogonal polynomials
Advances in the study of non-linear dynamics have encouraged the construction of models and simulators of non-linear time-series. Researchers in the field of both science and statistics have come up with innovative methods that are useful in extracting information from systems that exhibit …
-
Dynamics and control of manipulating robots
Dynamics and Control of manipulating robots currently is a major field of research in robotics. Various methods of efficiently formulating the non-linear dynamics have been proposed with an emphasis on reducing the computations necessary to solve the dynamics. Several control concepts and …
-
Falluntersuchungen zur nicht-linearen Dynamik der Arrhythmia absoluta
… methods as well as methods derived from non-linear dynamics. Specifically Poincaré-Plots were employed to analyse the data. Statistical methods were shown to describe the dynamics not adequately due to noise in the acquired data as well as owing to intrinsic qualities of the data sets. Namely …
-
Design and characterization of a smart bit for in-situ force measurement, using capacitive load cells and acoustic spectra analysis to determine rock type and tool wear in rock excavation process
… were tested: a capacitive load cell with non-linear dynamics used to classify material type and tool wear conditions, an acoustic sensor used to classify tool wear, and a capacitive load cell with linear dynamics used to measure the cutting forces. Full scale rock cutting tests are performed …
-
Identification and control of nonlinear processes with static nonlinearities.
… process costeffectiveness and safety. Simple linear dynamic models are used extensively in process control practice, but they are limited to the type of process behavior they can approximate. It is well-documented that simple nonlinear models can often provide much better approximations to …
-
Design and characterization of a smart bit for in-situ force measurement, using capacitive load cells and acoustic spectra analysis to determine rock type and tool wear in rock excavation process
… were tested: a capacitive load cell with non-linear dynamics used to classify material type and tool wear conditions, an acoustic sensor used to classify tool wear, and a capacitive load cell with linear dynamics used to measure the cutting forces. Full scale rock cutting tests are performed …
-
Multi-GPU Accelerated High-Fidelity Simulations of Beam-Beam Effects in Particle Colliders
… (eRHIC) or LHeC. These simulations model the non-linear collision dynamics of two counter rotating beams in particle colliders for millions of turns. In particular, at each turn, the algorithm simulates the collision of two directed beams propagating at different speeds with different number of …
-
Neural Network Based Sliding Mode Control for Robotic Manipulator
… perturbations, and their coupled non-linear dynamics. This thesis aims to propose a robust control strategy for autonomous robotic manipulation. First, the trajectory tracking problem was introduced and an approach to overcome this issue using a sliding mode controller combined with a …
-
Nonsmooth Dynamics in Two Interacting, Impacting Pendula
… sinusoidal horizontal motion, and due to the nonlinearities present in pendula as well as the discontinuous forcing from impacts, exhibits a wide range of behavior. Periodic, quasi-periodic, and chaotic responses all are possible, hysteresis is present, and grazing bifurcations allow for …
-
Finite Opening of Propagating Shear Cracks
Molecular Dynamics (MD) simulations of shear-dominated crack propagation by Abraham and Gao (2000) showed that there was finite crack opening when the crack propagated at a sub-Rayleigh speed while the crack opening became negligible when the crack propagated faster than the shear wave speed. On …
-
Input-output biomolecular systems
… involved in these reactions. Tools from non-linear dynamics and control theory can be leveraged to analyze and control these systems. In this thesis, we study two key biomolecular networks. In part 1 of this thesis, we study the input-output behavior of signaling systems, which are …
-
Low Order Representations in the Turbulent Wake of a Normal Flat Plate
… characterized by quasi-periodic vortex-shedding dynamics, is investigated in the context of low-order modeling, non-linear dynamics and kinetic energy transfer. The flow is characterized, coherent-structures are educed through the implementation of three models, and the transfer of kinetic energy …
-
Development of an unsteady state model for the tank bioleaching of sulphide mineral concentrates in flow reactor systems
… rate. Complicating this attempt are a) the non-linear dynamics associated with the kinetics and b) the primary reaction's being multiphase. Mathematical models are developed to establish which particle parameters are necessary to describe reactor performance using the method of segregation. The …
Page 1 of 6