Comparing results of an AI neural network method with a sparse optimization method for frequency-band reconstruction of seismic images

Motivated by environmental concern, the industry has been developing an alternative marine seismic source, in particular a marine vibrator. By spreading the emitted energy out over time, vibrator sources are perceived to be less intrusive to marine mammals. It is also believed that vibrators have greater control of the emitted source wavelet...

Exploring new Coloring Methods for Image Triangulations

Minimalistic, low-poly images have gotten more popular in recent years. But making these low-poly images by hand can be time intensive. For this reason, a lot of research has gone into how to triangulate an image (semi-)automatically. In previous works, only constant color and bilinear interpolation have been used to color the triangles in the...

Heuristics2Annotate: Efficient Annotation of Large-Scale Marathon Dataset For Bounding Box Regression

Annotating a large-scale in-the-wild person re-identification dataset especially of marathon runners is a challenging task. The variations in the scenarios such as camera viewpoints, resolution, occlusion, and illumination make the problem non-trivial. Manually annotating bounding boxes in such large-scale datasets is cost-inefficient....

Investigation of methods for Extrapolation & Interpolation of Radial Compressor & Turbine Performance maps

The project focuses on developing and implementing a 0D or 1D model for radial compressors and turbines, capable of both interpolating and extrapolating the performance maps. The proposed model will be calibrated using the data points available in the maps provided by the manufacturers to produce accurate mass flow for turbines and pressure...

An unstructured Tablulated Method for the computation of Thermo-physical fluid properties

In various propulsion and power systems, modeling of non-ideal fluid flows (fluids that depart from ideal gas behaviour), presents a great challenge. For example, in organic rankine cycle (ORC) turbines, where a part of the expansion process occurs close to the vapour saturation curve, the flow deviates highly from ideal behavior. A branch of...

On the edge of Regional Climate Models: Evaluation of interpolation methods and boundary data interval resolution for the Lateral Boundary Conditions of Regional Climate Models

A Regional Climate Model (RCM) is a comprehensive tool to<br/>simulate high-resolution climatic factors. A RCM is driven<br/>by low resolution data obtained from a Global Climate Model<br/>(GCM). In the one-way nested method, is the GCM data fed<br/>into the RCM as a Lateral Boundary Condition (LBC) in certain<br/>updates in time, the boundary...

Switched-Device Power Amplier using Bias Control

In this work, a switched-device power amplier using bias control is designed and realized. The PA operates at a frequency of 100MHz. Test results show that the PA achieves a PAE of 63% at −6dB power back-off and 60% at the peak output power of 40dBm. First, an overview of the state-of-the-art PA technology and performance in high PAPR...

Natural neighbour kriging and its potential for quality mapping and grid design

Radial basis functions for option pricing in insurance liabilities

This thesis discusses the valuation of embedded options in insurance liabilities using radial basis functions. For insurance companies, the valuation of embedded options is an important topic within risk management. This valuation can become too computationally heavy when nested Monte Carlo simulations are used. To overcome this computational...

The Reconstruction of Missing Marine Seismic Data

To evaluate the subsurface, seismic surveys are carried out. A requirement for the processing of these data is that it is dense and regularly sampled and it should also include the near-offsets. Because these data cannot be acquired in practice for towed marine surveys, it should be obtained by inter- and extrapolation. The first objective of...

3D Transesophageal echocardiography using a fast-rotating transducer

Echocardiography is a diagnostic modality which is widely used in cardiology, using ultrasound to image the living heart and assess its physiological function. Three-dimensional echocardiography surpasses the visual limitations of conventional echocar-diography, offering a three-dimensional perspective of the heart. Traditional techniques for...