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Dissertations / Theses on the topic 'Enhancement'

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Published: 4 June 2021
Last updated: 23 August 2023

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1

Wangenborn, Theresé. "Design process enhancement." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-10014.

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The need and demands within the automotive industry on quality systems and processes are high. The most widely spread document for quality control is the standard ISO/TS 16949. The aim with the APQP-process is to build the quality of the product and process for new designs or re-designs. The aim of this project is to find a customized, when it comes to the design process, APQP-process for Fuji Autotech with focus on the two first phases where most of the design activities are performed. This is done by studying the existing APQP-process at Fuji Autotech and comparing it with mainly the standard ISO/TS 16949, interviewing personnel at the company, and empirical studies of the process. The focus areas are therefore to find a process that suites the company and contribute to the academia by sharing experience to the University. Three issues where considered being of importance for the outcome of the project.

Question 1: Which factors are necessary to follow-up when assuring the quality of a project?

Question 2: How does the process for quality assuring a project look like today?

Question 3: How may the process for quality assurance of a project be optimized?

The result from this research project is two new process maps and a new APQP process flow for Fuji Autotech has been created. The studies performed, within this research project have identified the following key factors for obtaining a good quality.

  • Existence of a management systems for quality
  • Management responsibility
  • Management of resources
  • Product design
  • Measure, Analyze and Improvement
  • Fulfilment of customer needs
  • Fulfilment of requirements

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2

Chen, Fangxin. "Speaker information enhancement." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq22964.pdf.

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3

Bennett, Eric P. McMillan Leonard. "Computational video enhancement." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,844.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2007.
Title from electronic title page (viewed Dec. 18, 2007). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Computer Science." Discipline: Computer Science; Department/School: Computer Science.
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4

Janardhanan, Deepa. "Wideband speech enhancement." Aachen Shaker, 2008. http://d-nb.info/989298310/04.

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5

Jibb, Richard J. "Reflux condensation enhancement." Thesis, University of Manchester, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590632.

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The use of tubular reflux condensers in the place of conventional arrangements may provide significant improvements in mass transfer performance. However, industrial application is limited because of the low vapour velocities required to avoid flooding. It has been suggested that the mass transfer performance can be improved, without violating the flooding limit, by the application of "HiTRAN®", a wire matrix insert, manufactured by Cal Gavin Ltd. This work represents a theoretical and experimental investigation of reflux condensation inside vertical tubes to determine the potential of this system. A heat transfer test rig has been designed, built and commissioned in the UMIST Pilot Plant for this purpose. A series of experiments have been performed on this equipment using pure steam and steam/air mixtures, enabling a comparison of the performance of a plain tube, and the same tube fitted with a low density HiTRAN element. For condensation of pure steam the condensate film dominates the heat transfer resistance, and plain tube experiments indicate that there is little interaction between the vapour and liquid phases. As a result, correlations for the prediction of condensate heat transfer resistance in co-current flow may be applied to predict performance. By contrast with the HiTRAN element the pressure drop and liquid hold up were greatly increased. The element, as installed, provided little or no benefit in terms of improved performance, possibly because the increased mixing is offset by an increased hold up of liquid at the tube wall. For the condensation of steam air mixtures, where there is a significant gas side resistance, the capacity of the test heat exchanger is increased by the use of HiTRAN inserts. However, the increase was limited by the reduction in temperature driving force caused by the increased pressure drop. Despite the large increase in pressure drop, no obvious change in the conditions required to produce flooding of the system was observed. The film model, due to Colburn and Hougen (1933), was found-to be successful in predicting the heat load and condensate flowrate to within ±10%, for both systems, steam and steam-air. However, comparisons of the measured wall temperature profile, and axial heat load distribution indicate that the film model does not give good predictions for conditions at the top of the heat exchanger where the liquid mass flow is very small. For the HiTRAN element the film model provides a good approximation of the local heat transfer resistance along the entire heat exchanger, although the accuracy is limited by the poor prediction of pressure drop. The same model has been extended to predict the performance of the test rig for the case of reflux condensation of methanol/water mixtures, where the most important mass transfer benefits of tube inserts are expected to be realised.
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6

Chase, Charles A. Kemple William G. "The fidelity enhancement process /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School; Available from the National Technical Information Service, 1991. http://handle.dtic.mil/100.2/ADA245388.

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7

Yu, Xuebei. "Distribution system reliability enhancement." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41091.

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Practically all everyday life tasks from economic transactions to entertainment depend on the availability of electricity. Some customers have come to expect a higher level of power quality and availability from their electric utility. Federal and state standards are now mandated for power service quality and utilities may be penalized if the number of interruptions exceeds the mandated standards. In order to meet the requirement for safety, reliability and quality of supply in distribution system, adaptive relaying and optimal network reconfiguration are proposed. By optimizing the system to be better prepared to handle a fault, the end result will be that in the event of a fault, the minimum number of customers will be affected. Thus reliability will increase. The main function of power system protection is to detect and remove the faulted parts as fast and as selectively as possible. The problem of coordinating protective relays in electric power systems consists of selecting suitable settings such that their fundamental protective function is met under the requirements of sensitivity, selectivity, reliability, and speed. In the proposed adaptive relaying approach, weather data will be incorporated as follows. By using real-time weather information, the potential area that might be affected by the severe weather will be determined. An algorithm is proposed for adaptive optimal relay setting (relays will optimally react to a potential fault). Different types of relays (and relay functions) and fuses will be considered in this optimization problem as well as their coordination with others. The proposed optimization method is based on mixed integer programming that will provide the optimal relay settings including pickup current, time dial setting, and different relay functions and so on. The main function of optimal network reconfiguration is to maximize the power supply using existing breakers and switches in the system. The ability to quickly and flexibly reconfigure the power system of an interconnected network of feeders is a key component of Smart Grid. New technologies are being injected into the distribution systems such as advanced metering, distribution automation, distribution generation and distributed storage. With these new technologies, the optimal network reconfiguration becomes more complicated. The proposed algorithms will be implemented and demonstrated on a realistic test system. The end result will be improved reliability. The improvements will be quantified with reliability indexes such as SAIDI.
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8

Ozyurek, Serkan. "Image Dynamic Range Enhancement." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613603/index.pdf.

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In this thesis, image dynamic range enhancement methods are studied in order to solve the problem of representing high dynamic range scenes with low dynamic range images. For this purpose, two main image dynamic range enhancement methods, which are high dynamic range imaging and exposure fusion, are studied. More detailed analysis of exposure fusion algorithms are carried out because the whole enhancement process in the exposure fusion is performed in low dynamic range, and they do not need any prior information about input images. In order to evaluate the performances of exposure fusion algorithms, both objective and subjective quality metrics are used. Moreover, the correlation between the objective quality metrics and subjective ratings is studied in the experiments.
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9

Houghton, Timothy Oliver. "Axial compressor stability enhancement." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/252194.

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Aircraft jet engines must operate in a stable manner at all times. One source of instability is compressor stall. Stall problems can be reduced by machining cavities into the compressor casing adjacent to the rotor blades. This ?casing treatment? is the focus of the present work. Two treatment configurations are tested: circumferential grooves cut into the casing above the rotor blades, and axial slots cut into the casing adjacent to the rotor blade leading edges. The performance of a single casing groove is measured at different axial locations over the blade tips. For the first time, it is shown that there are two locations where compressor stability is maximised; near the leading edge and near mid-chord. The interaction between the groove and the compressor flow field is then studied. It is found that when located near the leading edge, the groove has a strong interaction with the near-casing flow and tip leakage vortex, but when located near mid-chord, the interaction is more subtle and less damaging to efficiency. Since the groove works well in both locations, it is concluded that manipulating the tip leakage vortex is not critical for improving compressor stability. Different groove numbers and cross-sections are then tested. For multiple grooves, the effi- ciency reduction is the sum of the constituent grooves, while the stall margin improvement is less than this sum. A simple square-section groove is found difficult to improve on, although in certain circumstances, a new ?intermittent groove? geometry is beneficial. The performance of axial slots is then investigated. Different slot shapes are tested and the results added to previous work to suggest an optimum slot geometry. A computational flow study shows that large variations in blade loading occur as the blades pass the slots, which could cause noise and vibration. It is found that while the flow inside the slot is principally a quasi-steady recirculation, the interaction between the slots and blades is highly unsteady, and this unsteadiness should not be neglected in design. In general, it is found that casing treatments that generate large stability improvements cause large efficiency losses. It is shown for the first time that the performance of casing grooves can be seriously reduced by changes in the stall inception mechanism. Maximum performance is achieved when the treated compressor stalls with a spike inception. Models from the literature are tested, but do not predict the stall inception mechanism well, which makes predicting the performance of casing grooves in a given compressor hard. Finally, it is shown that designing the blades and casing treatment as a unit may improve compressor performance.
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10

Syzek, Benjamin H. "Dignity and human enhancement." Connect to resource, 2007. http://hdl.handle.net/1811/28384.

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Thesis (Honors)--Ohio State University, 2007.
Title from first page of PDF file. Document formatted into pages: contains 36 p. Includes bibliographical references (p. 36). Available online via Ohio State University's Knowledge Bank.
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11

Srinivasan, Sriram. "Knowledge-based speech enhancement." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-456.

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12

Yang, Xiaofeng. "Auditory domain speech enhancement." Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1229.

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13

Almajai, Ibrahim M. "Audio Visual Speech Enhancement." Thesis, University of East Anglia, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.514309.

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14

Chase, Charles A. "The fidelity enhancement process." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/43742.

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Approved for public release; distribution is unlimited.
This study addresses the issues concerning the upgrade and reuse of computer simulation models and presents a comprehensive methodology-The Fidelity Enhancement Process-for conducting a model upgrade. Recent advances in software technology-specifically object-oriented programming and open architecture system development-have made this process feasible and provide unprecedented opportunities for model reuse. The Fidelity Enhancement Process was developed and applied to the Marine Corps Communication Architecture Analysis Model (MCCAAM) during its upgrade. MCCAAM simulates Marine Air Ground Task Force (MAGTF) single-channel communications architectures. MCCAAM was modified to evaluate architecture performance under different allocations of next-generation radios to units in the MAGTF, where the performance of an allocation was tactically driven.
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15

李芷玲 and Tsz-ling Alice Lee. "Enhancement of student motivation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41716759.

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Abbas, Syed Haider. "Enhancement of Viterbi Decoder." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-16401.

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17

Coals, Alison Valerie. "Orographic enhancement of precipitaiton." Thesis, University of Leeds, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399891.

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Seymour, Carl William. "Model-based speech enhancement." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627123.

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19

Turner, Danielle Caroline. "Psychopharmacology of cognitive enhancement." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616206.

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20

Harding, Philip. "Model-based speech enhancement." Thesis, University of East Anglia, 2013. https://ueaeprints.uea.ac.uk/47909/.

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A method of speech enhancement is developed that reconstructs clean speech from a set of acoustic features using a harmonic plus noise model of speech. This is a significant departure from traditional filtering-based methods of speech enhancement. A major challenge with this approach is to estimate accurately the acoustic features (voicing, fundamental frequency, spectral envelope and phase) from noisy speech. This is achieved using maximum a-posteriori (MAP) estimation methods that operate on the noisy speech. In each case a prior model of the relationship between the noisy speech features and the estimated acoustic feature is required. These models are approximated using speaker-independent GMMs of the clean speech features that are adapted to speaker-dependent models using MAP adaptation and for noise using the Unscented Transform. Objective results are presented to optimise the proposed system and a set of subjective tests compare the approach with traditional enhancement methods. Threeway listening tests examining signal quality, background noise intrusiveness and overall quality show the proposed system to be highly robust to noise, performing significantly better than conventional methods of enhancement in terms of background noise intrusiveness. However, the proposed method is shown to reduce signal quality, with overall quality measured to be roughly equivalent to that of the Wiener filter.
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21

Fillion-Deneault, Jonathan. "Bi-microphone speech enhancement." Mémoire, Université de Sherbrooke, 2006. http://savoirs.usherbrooke.ca/handle/11143/1353.

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Speech enhancement is an operation that aims to reduce acoustic noise picked up by noisy recordings of speech. It is essential to various systems such as mobile communications, hearing aids and hands free car telephony where the speaker's voice is often sampled in adverse acoustical conditions. Various solutions and implementations already exist to enhance the intelligibility and quality of speech in noisy environments and can generally be classified in two different groups; single microphone and multi-microphone methods. Single microphone techniques rely on the statistical properties of speech and noise to isolate one from another while multi-microphone techniques generally exploit spatial characteristics of the speaker and noise sources, often requiring precise microphone placement and calibration. This thesis proposes a novel and robust bi-microphone system aimed to fill the gap between the two extremes. Speech coherence between the two sound sources is exploited to supplement state of the art single microphone methods that use suppression rules and effective noise estimation techniques; the requirements on microphone directivity and placement are minimal, which enables rapid integration in current mobile devices. Subjective and objective results attest of the system's improved noise suppression compared to state of the art techniques in low signal to noise ratios.
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22

McLeod, Andrew. "Biogas enhancement with membranes." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/9332.

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Biogas is generated during anaerobic digestion (AD) of sewage sludge at wastewater treatment works (WWTW) and consists of approximately 50-70 % methane (CH4) balanced primarily by carbon dioxide (CO2). It is commonly used directly as a fuel gas for the renewable generation of electricity on-site by combined heat and power (CHP) engines. However, as a result of governmental incentivisation, biogas possesses a greater value when applied to the national gas grid as a natural gas substitute. However, this requires enhancement of the CH4 content to that comparable to natural gas by selective removal of CO2; a process known as biogas upgrading. This thesis explores the potential of hydrophobic micro-porous hollow fibre membrane contactors (HFMCs) to biogas upgrading. HFMCs allow non-dispersive contact between the biogas and a liquid solvent for the preferential absorption of CO2, which is conventionally facilitated by packed-column gas scrubbing technology. However, recent gas absorption literature has demonstrated many practical and operational advantages of HFMCs, which suggests they may be effective for biogas upgrading at WWTW. In this thesis, HFMCs were used to explore the mechanism and controllability of the undesirable co-absorption of CH4, known as methane slip. This was found to be attributable to the phase limiting mass transfer, with liquid-limited physical absorption in water exhibited 5.2 % slip whereas gas-limited chemical absorption displayed just 0.1 %. Ammonia-rich wastewaters were investigated as sustainable chemical absorbents using HFMCs and exhibited comparable chemically enhanced absorption to analogue synthetic ammonia solutions. The recovery of the subsequent reaction product (ammonium bicarbonate) by crystallisation facilitated by the membrane was also examined. The potential of this approach was summarised within two hypothetical wastewater flowsheets, where upgrading using a return liquor absorbent acts as a return liquor treatment and where ion exchange allows 100 % application of wastewater derived ammonia to biogas upgrading. These both offered potential economic advantages versus conventional flowsheets with 100 % biogas application to CHP.
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Bobusky, Sergej. "BlueJ interactive mode enhancement." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193923.

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An indispensable tool of any meaningful application development endeavour is an inte-grated development environment (IDE), and the same naturally applies for coding in Java programming language. There are many IDEs that are readily available to be used, though not all of them are well suited for elementary programming courses. BlueJ stands for a prominent exception here and its usage at hundreds of universities world-wide can be taken as a sound proof of this. The BlueJ value offering and traits are undisputable. That being said, we have to acknowledge that it is not perfect. One can iden-tify enhancements that need to be implemented for the tool to better support teaching ob-ject-oriented programming. The goal of this thesis is to identify the most prominent shortcomings of the BlueJ interac-tive mode and to design an implement features that will address them.
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Lee, Tsz-ling Alice. "Enhancement of student motivation." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41716759.

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Bachir, Mazen Georges. "Ultrasonic enhancement of mixing." Thesis, University of Manchester, 2004. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518863.

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Krishnan, Gayathri. "Skin penetration enhancement techniques." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/1471.

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Transdermal drug delivery is an effective alternative to conventional oral and injectable drug delivery routes. It offers painless and convenient once daily or even once weekly dosing for a variety of clinical indications. The major limitation to successful transdermal drug delivery is the efficient barrier properties of the skin. Significant research efforts have been focused on developing strategies to overcome these barrier properties. These strategies include the use of physical and chemical penetration enhancers. Physical skin penetration enhancers use an external energy source to alter the barrier properties of the skin. The current research focuses on some of these physical skin penetration enhancers on a range of drug molecules and peptides.The first technology investigated was Dermaportation that utilised pulsed electromagnetic energy. This technology enhanced the epidermal permeation of naltrexone in vitro as compared to passive diffusion. A 5-fold increase in naltrexone permeation was observed during Dermaportation application when compared to passive administration. Multiphoton tomography-fluorescence life-time imaging microscopy (MPT-FLIM) analysis of the permeation of gold nanoparticles in the presence of Dermaportation revealed increased penetration across ex vivo human skin. These results demonstrated that the channels created by dermaportation must be larger than the 10 nm diameter of the applied nanoparticles.The second technology investigated was an unpowered magnetic film array technology (ETP), which utilised unpowered magnetic energy. Chapter 3 presents enhanced epidermal permeation of urea with ETP. A 4-fold increase in urea penetration was observed across human epidermis in the in vitro permeation study. Optical resonance tomography was used to visualise the changes in epidermal thickness due to urea permeation as an indication of increased hydration. The results revealed an increase in epidermal thickness at 30 min, to 16% for ETP induced urea permeation as compared to 3% with urea from occlusion. These results further substantiated our previous findings that magnetic energy creates hydrophilic diffusion channels or pores in the skin.The third technology investigated was low-frequency sonophoresis that utilises cavitation bubbles as a force to create channels for drug delivery in the skin. Chapter 4 presents enhanced human skin permeation of 5-aminolevuleninic acid in vitro and curcumin dye in vivo with low-frequency sonophoresis. Two different sources of ultrasound devices that generated low-frequency sonophoresis were investigated. MPT-FLIM analysis was utilised to investigate the effects of sonophoresis on human skin in vivo. This revealed that there was substantial disturbance in the epidermal cells due to cavitation by sonophoresis. Permeation of curcumin was found in the deeper layers of the epidermal membrane with 55 kHz sonophoresis and was confined to the more superficial layers of skin with 21 kHz sonophoresis. Permeation of 5-aminolevuleninic acid across human skin increased significantly when compared to passive permeation.The fourth technology investigated in this research was iontophoresis which utilises a small electric current to drive charged and uncharged molecules across the skin. Chapter 5 presents enhanced epidermal permeation of a range of model therapeutic and cosmetic peptides. Various key parameters such as pH, concentration and presence of counterions and co-ions that are essential for effective iontophoretic delivery of these peptides were investigated. The iontophoretic delivery of 5- aminolevulenic acid revealed a 15-fold enhancement when compared to passive diffusion. For dipeptide (Ala-Trp) the mean cumulative amount increased iontophoretic delivery from 0.4±0.4, 0.1μg/cm2 to 16.0±8.8, 3.6μg/cm2 (Mean±SD, SEM) was observed when the donor pH was reduced from 7.4 to 5.5. The corresponding current intensity (0.38mA/cm2) normalised flux was 36.1±19.5, 11.2μg/(mA.h) for iontophoretic Ala-Trp. For the tetrapeptide (Ala-Ala-Pro-Val) the mean cumulative amount that permeation with 2h iontophoresis was 350.4±45.9, 15.3μg/cm2 (Mean±SD, SEM) compared to zero passive permeation. A 4-fold increase in acetyl hexapeptide-3 delivery occurred with iontophoresis compared with passive application. In addition it was observed that lowering of donor solution pH and the presence of counterions and co-ions reduced the iontophoretic delivery of acetylhexapeptide-3. Iontophoresis provided a significant enhancement factor for the decapeptide, triptorelin acetate with a 16-fold increase in epidermal permeation compared with passive permeation. The iontophoretic permeation was concentration dependent with mean cumulative amounts of 48±28, 14 μg/cm2 (Mean±SD, SEM) achieved with 9 mM concentration of triptorelin acetate.Overall the technologies investigated in this research work presented enhanced permeation of drug molecules and peptides. In addition MPT-FLIM was demonstrated to be an efficient visualisation tool for permeation within the skin. This research demonstrates the effectiveness of physical skin permeation enhancement techniques and extends our understanding of these technologies.
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Pacholczyk, Anna. "Ethical issues in moral and social enhancement." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/ethical-issues-in-moral-and-social-enhancement(a32f7974-eb67-4e5d-88c6-d6cfe247a8c3).html.

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Recent developments in social neuroscience have stirred up increased interest within the bioethical debate (for a review see: Specker et al. 2014). Moral enhancement is a concept that directly embodies the idea of making brain science work for the social and moral good. In recent ethical discussions about biomedical means of moral enhancement, scholars have focused on so called ‘direct means of moral enhancement,’ discussing the ethical permissibility of modifying the emotional underpinnings of moral behaviour (Douglas, 2008; 2013; Persson and Savulescu, 2008; Savulescu and Persson, 2012). However, critics have argued that such modification only seems like moral enhancement, that behavioural modification is not ‘true’ moral enhancement, for the reason that it changes behaviours without making agents better moral agents. Critics have also noted that it can undermine freedom (e.g. Harris, 2011; see also: Douglas, 2014). This thesis addresses the ethical issues relating to enhancement. In the first part of this work I consider conceptual issues surrounding the concept of moral enhancement and argue that moral enhancement is plausible if we adjust our expectations to match those we have of cognitive enhancement. I examine the difference between pro-sociality and morality, and argue that an increase in empathy and reduction in anger cannot be seen as straightforward moral enhancements. The second part examines the objections related to moral disagreement, medicalization and narrative identity. The third part of this work focuses of the issues related to freedom and agency. I argue that voluntary direct emotion modulation, if embedded in appropriate reflection, is a prima facie desirable way of moral enhancement.
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Gustafsson, Fredrik. "Unsupervised Image Enhancement Using Generative Adversarial Networks : An attempt at real-time video enhancement." Thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446698.

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As the world has become more connected meetings have moved online. However, since few have access to studio lighting and uses the embedded webcam the video quality can be far from good. Hence, there is an interest in using a software solution to enhance the video quality in real time. This thesis investigates the feasibility to train a machine learning model to automatically enhance the quality of images. The model must learn without using paired images, since it is difficult to capture images with the exact same content but different quality. Furthermore, the model has to process at least 30 images per second which is a common frequency for videos. Therefore, this thesis investigates the possibility to train a model without paired images and whether such a model can be used in real-time. To answer these questions several sizes of the same model was trained. These were evaluated using six different measures during in order to determine if training without paired data is possible. The models image enhancement capabilities and inference speed were investigated followed by attempts at improving the speed. Finally, different combinations of datasets were investigated to test how well the model generalised to new data. The results show that it is possible to train models for image enhancement without paired data. However, to use such a model in real time a graphics card is needed to reach above 30 images per second.
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Alotaibi, Meteab Aujian. "Productivity enhancement through process integration." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4204.

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A hierarchical procedure is developed to determine maximum overall yield of a process and optimize process changes to achieve such a yield. First, a targeting procedure is developed to identify an upper bound of the overall yield ahead of detailed design. Several mass integration strategies are proposed to attain maximum yield. These strategies include rerouting of raw materials, optimization of reaction yield, rerouting of product from undesirable outlets to desirable outlets, and recycling of unreacted raw materials. Path equations are tailored to provide the appropriate level of detail for modeling process performance as a function of the optimization variables pertaining to design and operating variables. Interval analysis is used as an inclusion technique that provides rigorous bounds regardless of the process nonlinearities and without enumeration. Then, a new approach for identification of cost-effective implementation of maximum attainable targets for yield is presented. In this approach, a mathematical program was developed to identify the maximum feasible yield using a combination of iterative additions of constraints and problem reformulation. Next, cost objectives were employed to identify a cost-effective solution with the details of design and operating variables. Constraint convexification was used to improve the quality of the solution towards globability. A trade-off procedure between the saving and expenses for yield maximization problem is presented. The proposed procedure is systematic, rigorous, and computationally efficient. A case study was solved to demonstrate the applicability and usefulness of the developed procedure.
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Chen, Jian. "Measurement enhancement for state estimation." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2717.

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Cho, Jaeyoun. "Speech enhancement using microphone array." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1132239060.

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32

Ozerinc, Sezer. "Heat Transfer Enhancement With Nanofluids." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611862/index.pdf.

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A nanofluid is the suspension of nanoparticles in a base fluid. Nanofluids are promising for heat transfer enhancement due to their high thermal conductivity. Presently, discrepancy exists in nanofluid thermal conductivity data in the literature, and enhancement mechanisms have not been fully understood yet. In the first part of this study, a literature review of nanofluid thermal conductivity is performed. Experimental studies are discussed through the effects of some parameters such as particle volume fraction, particle size, and temperature on conductivity. Enhancement mechanisms of conductivity are summarized, theoretical models are explained, model predictions are compared with experimental data, and discrepancies are indicated. Nanofluid forced convection research is important for practical application of nanofluids. Recent experiments showed that nanofluid heat transfer enhancement exceeds the associated thermal conductivity enhancement, which might be explained by thermal dispersion, which occurs due to random motion of nanoparticles. In the second part of the study, to examine the validity of a thermal dispersion model, hydrodynamically developed, thermally developing laminar Al2O3/water nanofluid flow inside a circular tube under constant wall temperature and heat flux boundary conditions is analyzed by using finite difference method with Alternating Direction Implicit Scheme. Numerical results are compared with experimental and numerical data in the literature and good agreement is observed especially with experimental data, which indicates the validity of the thermal dispersion model for explaining nanofluid heat transfer. Additionally, a theoretical analysis is performed, which shows that usage of classical correlations for heat transfer analysis of nanofluids is not valid.
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33

Yoshioka, Takuya. "Speech Enhancement in Reverberant Environments." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120369.

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Dücker, Eibe Behrend. "Enhancement Strategies in NMR Spectroscopy." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E3E4-9.

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35

McGuire, Jeffrey Robert Aerospace Civil &amp Mechanical Engineering Australian Defence Force Academy UNSW. "Ignition enhancement for scramjet combustion." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Aerospace, Civil and Mechanical Engineering, 2007. http://handle.unsw.edu.au/1959.4/38748.

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The process of shock-induced ignition has been investigated both computa- tionally and experimentally, with particular emphasis on the concept of radical farming. The first component of the investigation contained Computational Fluid Dynamic (CFD) calculations of an ignition delay study, a 2D pre-mixed flow over flat plate at a constant angle to the freestream, and through a generic 2D scramjet model. The focal point of the investigation however examined the complex 3D flow through a generic scramjet model. Five experimental test conditions were ex- amined over flow enthalpies from 3.4 MJ/kg to 6.4 MJ/kg. All test conditions simulated flight at 21000 metres ([symbol=almost equal to] 70000 ft), while the equivalent flight Mach number varied from approximately 8.5 at the lowest enthalpy, to approximately Mach 12 at the highest enthalpy condition. The presence of H2 fuel injected in the intake caused a separated region to form on the lower surface of the model at the entrance to the combustor. A fraction of the total mass of fuel was entrained in this separated region, providing long residence times, hence increased time for the chemical reactions that lead to ignition to occur. In addition, extremely high temperatures were found to exist between each fuel jet. Both fuel and air are present in these regions, therefore the chance of ignition in these regions is high. Streamlines passing through the recirculation zone ignited within this zone, while streamlines passing between the fuel jets ignited soon after entry into the combustor. The first instance of a pressure rise from combustion was observed on the centreline of the model where the reflected bow shock around the fuel jets crossed the centreline of the combus- tor. Upstream of this location the static pressure of the flow was too low for the chemical reactions that release heat to occur. The comparison between the experimental and computational results was lim- ited due to inaccuracies in modelling the thermal state of the gas in the CFD calculations. The gas was modelled as being in a state of thermal equilibrium at all times, which incorrectly models the freestream flow from the nozzle of the shock tunnel, and also the flow downstream of oblique shock wave within the scramjet model. As a result combustion occurs sooner in the CFD calculations than in the experimental result.
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Gustafsson, Harald. "Speech enhancement for mobile communications /." Ronneby : Dept. of Telecommunications and Signal Processing, Univ. of Karlskrona/Ronneby [Institutionen för telekommunikation och signalbehandling, Högsk. i Karlskrona/Ronneby], 2000. http://www.bth.se/fou/.

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37

Brack, Lee. "Self-esteem : toward enhancement strategies." Theological Research Exchange Network (TREN), 1988. http://www.tren.com.

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Garret, Aaron Dozier Gerry V. "Neural enhancement for multiobjective optimization." Auburn, Ala., 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Computer_Science_and_Software_Engineering/Dissertation/Garrett_Aaron_55.pdf.

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39

Barnes, Hugh. "Speech enhancement using microphone arrays." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409581.

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Del, Campo Francisco Javier. "Ultrasonic enhancement of electrochemical processes." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393398.

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McMahon, S. J. "Heavy Atom Radiotherapy Dose Enhancement." Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527871.

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Bennett, Philip Seton. "Ethical genetic enhancement in sport." Thesis, University of Bristol, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.570716.

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Athletes have consistently tried to gain a competitive edge over each other throughout the history of sport. Advances in genetics suggest that this will be one source of such an edge in the future. The World Anti-Doping Agency has decreed that so-called 'gene doping' is impermissible. In this thesis, I will argue that this approach is premature; I offer a case for the inclusion of genetic enhancements in sport. The explication will be made within a virtue consequentialist moral framework linked to a MacIntyrean understanding of social practices. Having dealt with minor initial objections, possible problems for society, and concerns about the impact on sport, I will show why the inclusion of the innovation would be beneficial to sport. The main positive result will be the possibility for a deeper engagement with the practice for a longer period of time thus enabling more goods internal to the practice to be realised. These internal goods have a major bearing on the positive consequences associated with sport and will justify the permiss.ibility of using genetic enhancement technology.
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Nolden, Raphael. "Studies of DPA Fluorescence Enhancement." Thesis, University of Canterbury. Physics and Astronomy, 2007. http://hdl.handle.net/10092/4414.

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The processes involved in the enhancement of the fluorescence profile of dipicolinic acid (DPA) were measured and analysed, with particular emphasis on their potential application to the rapid identification of suspicious powders. The research was conducted in contribution to the anthrax detector currently under development at this department. Using the enhancement of fluorescence as a method of determining whether a sample contains spores shows great potential because DPA is not found in most powders that do not contain spores. Thus, its detection is a good indication of the presence of spores. The research presented in this thesis primarily focuses on the optimisation of measurement and enhancement techniques. Both DPA and milk powder (containing spores) were used as anthrax simulants. We found that 210 nm light was the optimal wavelength for the enhancement of DPA; however, as most light sources have a higher intensity at longer wavelengths, the use of 270 nm light may be more effective. At low concentrations, there is a linear relationship between detected fluorescence intensity and the quantity of DPA present. A linear response was also found to the enhancement-light exposure time.
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Tse, Pui-man, and 謝沛文. "Asset enhancement of shopping centres." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48343407.

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“It must be kept in mind that architects do not design malls for architects; they design them for developers and retailers that are interested in creating malls and other shopping centres to attract consumers and keep them coming back.”(Richards, 1990) Concept of shopping centre (SC) originally emerged in nineteenth-century and the concept changes over time due to the ever-changing needs and perception from the customers. Shopping centre originated from an isolated and scattered of shops and developed into nowadays large commercial retail properties. They do not only provide leisure and entertainment for the public, but also a place of where provide business opportunity for investment and profit-making for the retailers and developers. However, any single property will be decayed and deteriorated over time. In order to upkeep the standard of the shopping centres, rehabilitation or renovation work has to be carried out in order to upgrade the appearance, facilities and equipment of shopping centres so as to maintain their attractiveness and competitive and keep customers coming back. The research topic concentrates on the renovation projects carried out by The Link Real Estate Investment Trust (The Link REIT) inside public housing estates commercial properties after the privatization in 25 November 2005. After the privatization, renovation work of shopping centres becomes one of the main tasks of The Link REIT. Despite series of political pressure and criticism towards the management of The Link regarding their renovation work and rental policies, The Link REIT continues to expand their renovation projects to various public housing estates shopping centre. It provides a useful and interesting case to study the purpose of renovation on shopping centre. The privatization is a divestment exercise of the Hong Kong Housing Authority (HKHA), over 180 retails and car park properties were sold to The Link. After seven years of operation, 25 shopping centres are completed with different scope of renovation work, while others are in various planning stages. Base on the shopping centre hierarchy definite by The Link REIT, 3 details case studies will be carried out. The studies compare the data and changes before and after the renovation work, analysis will be made to compare the operating result during HKHA era so as to examine whether The Link could achieve the purpose of their renovation projects.
published_or_final_version
Housing Management
Master
Master of Housing Management
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Reddy, M. A. "Single phase heat transfer enhancement." Thesis, University of Manchester, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616903.

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This thesis presents investigations into the enhancement of heat transfer inside tubes using HiTRAN® tube inserts manufactured by Cal Gavin Ltd. The applicability of heat transfer enhancement in vertical thermo syphon reboilers was investigated using a computer simulation. In vacuum operation, reboilers can have a significant subcooled length (as high as 60 % of the tube length). Heat transfer coefficients in this region are lower than in the two-phase region. Using tube inserts, an increase is made in the heat transfer rate occurring in the sub-cooled region and, a corresponding increase in the length of the tube subjected to two-phase heat transfer and improvement of heat transfer performance results. Geometric variables of the tube insert were investigated experimentally, to study their influence on heat transfer and pressure drop performance. Loop density, loop wire diameter, core wire diameter, loop material and uniformity of loop density were investigated. Two experimental facilities were designed, commissioned and constructed to measure the heat transfer and pressure drop performance of these tube inserts. The new rig at UMIST is located in a flameproof location and was constructed with the intention of investigating a wide range of other processes in the future. Two tube inserts were tested over a Reynolds number range of 200 to 200000 using water as the working fluid. Adiabatic, cooling and heating tests were performed using an inside tube diameter of28.25 mm. At the Cal Gavin Ltd. facility, the rig was redesigned to extend the operating range of data collection. It was enhanced by the provision of automatic data collection, improved accuracy of temperature measurement and new equipment to allow cooling experiments. Tube inserts were tested between a Reynolds number of 100 to 2000 using a viscous oil as the working fluid. Again adiabatic, cooling and heating tests were performed. An inside tube diameter of 21.18 mm was used in the maj ority of the tests, but some preliminary results using a tube diameter of 28.45 mm are also reported. Using the results of the experimental work, pressure drop performance was correlated using an approach similar to that used for packed beds. It was found that 90 % of the data were correlated between ± 15 % of the prediction using specific insert dimensions and inside tube diameter. Further investigations into the prediction of heat transfer coefficients were made. However no general correlation could be developed from a fundamental basis, to predict heat transfer across the full range of Reynolds numbers investigated in this study. A recommendation is made for a suitable correlation. The influence of the insert geometry was associated with the fundamental pressure drop and heat transfer performance of the tube insert, leading to recommendations for the optimisation of tube insert design.
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Wu, Tsung-li. "Distributed processing on link enhancement." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23869.

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Ingram, Robert J. "Legibility enhancement for information visualisation." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307802.

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Emiroglu, Ibrahim. "Fingerprint image enhancement & recognition." Thesis, University of Hertfordshire, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363500.

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Janardhanan, Deepa [Verfasser]. "Wideband Speech Enhancement / Deepa Janardhanan." Aachen : Shaker, 2008. http://d-nb.info/1162792663/34.

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Street, Paul Raymond. "Mechanisms of skin penetration enhancement." Thesis, Cardiff University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358541.

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