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 91 for “"Digital techniques"”.
-
An improved algorithm for identification of time varying parameters using recursive digital techniques
… gain, et cetera. The decreasing cost of digital processors and the versatility of digital programming make digital methods an attractive means of accomplishing identification. It is important, however, that an identifier be able to track any change in a parameter if its output is to be …
-
An Experimental Study of the Motion of Small Particles in a Turbulent Fluid Field Using Digital Techniques for Statistical Data Processing
Made available in DSpace on 2014-12-09T19:52:19Z (GMT). No. of bitstreams: 1 6612356.pdf: 5801491 bytes, checksum: 9e530c38c118bb6586bb5dc77b5e22ab (MD5) Previous issue date: 1966
-
Beyond the Folds: Emergent Properties in Paper
… journal. Using cyanotype, origami, drawing, and digital techniques I co-opt the language of computers (binary) to represent aspects of myself in paper form, blending the analog and digital into a distinctive way of communicating. The work is informed by my understanding of Constructor Theory, …
-
Digital frequency domain fluorometry and the study of Hoechst 33258 DYE-DNA interactions
… of an acquisition system based on modem digital techniques. The digital acquisition method has opened the door to different types of experiments that previously were either too time consuming or could not be done. The use of digital techniques and the development of a method to modulate …
-
A comparison of traditional and digital mediums’ effect on reach and purchase intention
The use of digital media marketing has been increasing rapidly with technological advances and marketers today are searching for new ways to reach their consumers and increase purchase intention. Digital media marketing can be described as the component of marketing that utilizes the internet and …
-
Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures
This dissertation presents the use of advanced digital techniques in the development of efficiency enhanced, linearized power amplifier (PA) architectures. In this research, digital enhancements are used to boost the efficiency of a dual-input LDMOS Doherty PA of 500W peak power. It is shown that …
-
Cramer-Rao bound analysis of multi-frame blind deconvolution
<p>This thesis explores how support constraints and multiple frames affect multi-frame blind deconvolution. Previous research in non-blind deconvolution, which seeks to estimate an object from a blurred and noisy image, characterized how the use of support constraints exploited spatial noise …
-
An Evaluation of the Impact of the Digital Platform on Hard News Storytelling at the BBC and SABC Online News Sites
Digital technologies are impacting news cultures across the globe in various ways. In this thesis, I explore specifically how the digital platform is influencing hard news reporting practices at the online news websites of the British Broadcasting Corporation (BBC) and the South African …
-
INFORMATION TRANSFER EFFICIENCY OF X-RAY IMAGE INTENSIFIER-BASED IMAGING SYSTEMS.
The information transfer efficiency of any quantum detection imaging system can be described by a unique measure: the detective quantum efficiency {DQE(f)}, which is a function of the statistically independent frequency channels. The DQE(f) is a combined descriptor which takes into account the …
-
Standards in clinical dual energy x-ray absorptiometry
Dual Energy X-ray Absorptiometry (DXA) is a digital x-ray technique designed to quantify bone mineral density (BMD), primarily of the lumbar spine and hip, and hence to provide a measure of bone strength and propensity to fracture. The original technology was based on a pencil beam x-ray source but …
-
Hardware Fault Attack Detection Methods for Secure Embedded Systems
… this work, we propose cycle-accurate and fully digital techniques that can efficiently detect different types of fault attacks. The detection methods are low-cost regarding the area and power consumption and can be easily implemented using the standard cell based VLSI design flow. In addition to …
-
Using the Theory of Planned Behavior as a Predictor of Radiologic Technologists' Use of Patient Radiation Protection Best Practices: a Regional Study
… past two decades. With the introduction of new digital radiology equipment, patient dose is on the rise. Possible reasons for a radiologic technologist's behavior include: influence by availability or lack of equipment, policies, social pressure, attitudes, and a safety culture. Little research …
-
Digital signal processing techniques for improving the automatic classification of power quality events.
… in this thesis investigates the application of digital signal processing techniques in the power quality automatic classification field, and thus, proposes an optimized automatic monitoring system with an improved accuracy. The proposed monitoring system involves three main sections: detection …
-
Digitally-assisted, ultra-low power circuits and systems for medical applications
… the same time, advances in integrated circuits techniques, particularly in CMOS, have opened possibilities for advanced implantable systems that are very small and consume minimal energy. Minimizing the volume of medical implants is important as it allows for less invasive procedures and greater …
-
High Performance Digital Control Techniques for Powering Microprocessors
… for processors today and in the future. Digital power control architectures in which processors closely interact with voltage regulators are becoming necessary to enhance system energy efficiency. Digital techniques offer advantages such as flexibility, fewer external components and …
-
Dynamically reconfigurable management of energy, performance, and accuracy applied to digital signal, image, and video Processing Applications
… for implementing dynamically reconfigurable digital signal, image, and video processing systems. The basic idea is to first generate a collection of Pareto-optimal realizations in the EPA/PPA space. Dynamic EPA/PPA management is then achieved by selecting the Pareto-optimal implementations …
-
Error and uncertainty in estimates of Reynolds stress using ADCP in an energetic ocean state
The challenge of estimating the Reynolds stress in an energetic ocean environment derives from the turbulence process overlapping in frequency, or in wavenumber, with the wave process. It was surmised that they would not overlap in the combined wavenumber-frequency spectrum, due to each process …
-
Digital control of an Encryptic broad-band radar application
This project describes the digital control of a radar that is ideally insensitive to alien disturbance signals. The key factor in this project comprises the design and realisation of a wide range of digital techniques combined into one digital controller consisting of several elements.The project …
-
Digital control of an Encryptic broad-band radar application
This project describes the digital control of a radar that is ideally insensitive to alien disturbance signals. The key factor in this project comprises the design and realisation of a wide range of digital techniques combined into one digital controller consisting of several elements.The project …
Page 1 of 5