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.
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Showing 1 to 20 of 24 for “"BVP"”.
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Lietuvos eksporto įtakos BVP augimui vertinimas /
Foreign trade is essential for economics system. From the knowledge of economics theory we know that as the economy grows, the country's GDP grows. The Lithuanian economy has undergone many changes - accession to the EU, economic crisis, economic recovery and its slowdown. This thesis values …
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Existence and uniqueness of solutions of boundary value problems by matching solutions.
… we consider the interval [a, c] of a BVP as the union of the two intervals [a, b] and [b, c], analyze the solutions of the BVP on each, and then match the proper ones to be the unique solution on the whole domain. In the process of matching solutions, boundary value problems with …
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A Temporal Encoder-Decoder Approach to Extracting Blood Volume Pulse Signal Morphology from Face Videos
… methods for extracting blood volume pulse (BVP) representations from video of the human face. Whereas most previous systems have been concerned with estimating vital signs such as average heart rate, this thesis addresses the more difficult problem of recovering BVP signal morphology. We …
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Place-making under Japan's neoliberal regime: ethics, locality, and community in rural Hokkaido
… on a rural revitalization project called the BVP in a rural town of Hokkaido, the northern island of Japan. A local non-profit organization, the ODC, sponsors this project, which aims to recruit retired urbanites to settle in their depopulated town to practice pesticide-free farming. During my …
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Boundary Value Problems for the Laplace Equation on Convex Domains with Analytic Boundary
… that couples the boundary data for a given BVP. Previously, the global re lation has primarily been applied to elliptic PDEs defined on polygonal domains. In this thesis we extend the use of the global relation to domains with smooth boundary. This is done by introducing a new transform, …
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Camera-based Recovery of Cardiovascular Signals from Unconstrained Face Videos Using an Attention Network
… recovering the morphology of blood volume pulse (BVP) information from a video of a person's face. Video-based remote plethysmography methods have shown promising results in estimating vital signs such as heart rate and breathing rate. However, recovering the instantaneous pulse rate signals is …
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Extraction of Blood Volume Pulse Morphology from Facial Videos Using an LSTM-Based Temporal Encoder-Decoder Model
… a method for extracting blood volume pulse (BVP) signals from facial videos, moving beyond basic heart rate estimation to capture full pulse waveforms. Our approach adapts techniques from audio signal separation and applies them to video, using a machine learning model capable of processing …
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Development of a nonlinear predictive control algorithm and its application to flotation
… problem into a two-point boundary value problem (BVP). Conventionally these problems have been solved using the multiple shooting differential equation solver, or variants of it. In this work the BVP is solved by orthogonal collocation, using the FORTRAN package COLSYS. Stragegies are developed to …
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A new numerical method for the problem of nonlinear long-short wave interactions
… mapping of the original Boundary Value Problem (BVP) and on the devolopment of a mixed Fourier-Chebyshev spectral method for the solution of the transformed BVP, while ensuring exponential convergence with respect to the Chebyshev order of expansion K.
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Analytical and Computational Tools for the Study of Grazing Bifurcations of Periodic Orbits and Invariant Tori
… we present a general boundary value problem (BVP) approach to locate periodic trajectories corresponding to a hybrid dynamical system under parameter variations. A methodology to compute the eigenvalues of periodic trajectories when using the BVP formulation is illustrated using a model …
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Green's Functions of Discrete Fractional Calculus Boundary Value Problems and an Application of Discrete Fractional Calculus to a Pharmacokinetic Model
… (IVP) and two-point boundary conditions (BVP). In Chapter 3, Green's functions are introduced and discussed, along with examples. Instead of using Cauchy functions, the technique of finding Green's functions by a traditional method is demonstrated and used throughout this chapter. The …
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Motion artifact cancellation for wearable photoplethysmographic sensor
… implemented to recover the blood volume pulse (BVP) from the corrupted signal. Various digital signal processing (DSP) approaches for motion artifact cancellation have been attempted in the past, but a reliable around-the-clock PPG sensor is yet to be out on the market. This thesis outlines a …
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Geometrical Investigation on Escape Dynamics in the Presence of Dissipative and Gyroscopic Forces
… by solving a proper boundary-value problem (BVP) and the globalization of the manifold. For the dissipative systems, however, the transition boundary of a given energy becomes the invariant manifold of an index-1 saddle. We present a BVP approach using the small initial sphere in the stable …
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The psychophysiology of risk processing and decision making at a regional stock exchange
… skin response (SCR/GSR), blood volume pulse (BVP), electrocardiogram (ECG), electroencephalogram (EEG), electromyogram (EMG), and temperature (Temp)-of monetarily motivated professionals making high pressure decisions. From these signals I estimate underlying physiological features, such as …
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An analysis of defibrillation and cardiac resynchronization therapy strategies in patients with failing systemic right ventricles
… other deteriorated during biventricular pacing (BVP). This prompted a novel approach to CRT using noncontact mapping (NCM) and acute intra-arterial blood pressure response to guide endocardialsRV lead placement in a single patient. The ejection fraction increased from 23 -33% within 1week post …
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Spacecraft trajectory optimization using many embedded Lambert problems
… extends an embedded boundary value problem (EBVP) technique for preliminary design in the two-body problem. The EBVP technique is designed for direct, unconstrained optimization using many, short-arc, embedded Lambert problems that discretize the trajectory. The short arcs share terminal …
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A mathematical model of wheelchair racing
… nonlinear ordinary boundary value problem (BVP). Numerical methods are used to solve the BVPs independently, resulting in velocity discontinuities at the phase boundaries. These instantaneous velocity increases or decreases must be caused by impulsive forces. In turn, these impulsive forces …
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Machine learning enhancements for wearable device investigation of acute anxiety and cardiovascular diseases
… electrocardiography (ECG), blood volume pulse (BVP), electrodermal activity (EDA) etc. signals, to improve early disease prediction and progression in physical and mental health disorders. We measure our ability to use these signals to classify anomalies in the cardiovascular health and …
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Pelno perkėlimo politika: Lyginamoji prevencinės politikos ir perkeliamo pelno masto Lietuvoje ir Vidurio Europoje analizė /
… perkeliamas pelnas siekia 0,7-3 % nuo šalies BVP. Šioje šalių grupėje mažu perkeliamo pelno mastu pasižymėjo Lietuva, Latvija, Lenkija, Slovakija, Slovėnija ir Rumunija; didesniu - Estija, Čekija, Kroatija bei Bulgarija. Tyrime keliamas klausimas, kokios prevencinės priemonės paaiškina …
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Recognition of emotional and cognitive states using physiological data
… in addition, and physiological data (EMG, BVP, GSR, HR, Respiration). Results show that although the majority of braking delays (irrespective of the phone task) lay between -0.5 and +0.5 seconds of the average no-phone delay, there were a few cases in which subjects pressed the brakes …
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