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Pinnawala, Nimalsiri, and nimalsiri pinnawala@rmit edu au. "Properties of Trace Maps and their Applications to Coding Theory." RMIT University. Mathematical and Geospatial Sciences, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080515.121603.
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In this thesis we study the application of trace maps over Galois fields and Galois rings in the construction of non-binary linear and non-linear codes and mutually unbiased bases. Properties of the trace map over the Galois fields and Galois rings has been used very successfully in the construction of cocyclic Hadamard, complex Hadamard and Butson Hadamard matrices and consequently to construct linear codes over integers modulo prime and prime powers. These results provide motivation to extend this work to construct codes over integers modulo . The prime factorization of integers paved the way to focus our attention on the direct product of Galois rings and Galois fields of the same degree. We define a new map over the direct product of Galois rings and Galois fields by using the usual trace maps. We study the fundamental properties of the this map and notice that these are very similar to that of the trace map over Galois rings and Galois fields. As such this map called the trace-like map and is used to construct cocyclic Butson Hadamard matrices and consequently to construct linear codes over integers modulo . We notice that the codes construct in this way over the integers modulo 6 is simplex code of type . A further generalization of the trace-like map called the weighted-trace map is defined over the direct product of Galois rings and Galois fields of different degrees. We use the weighted-trace map to construct some non-linear codes and mutually unbiased bases of odd integer dimensions. Further more we study the distribution of over the Galois fields of degree 2 and use it to construct 2-dimensional, two-weight, self-orthogonal codes and constant weight codes over integers modulo prime.
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Glazer, Shannon A. "From soup to buttons an experimental investigation of historic bone button manufacture in an institutional context /." Diss., Online access via UMI:, 2006.
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Finkelstein, Marta R. "Cute As A Button." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3795.
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Cute As A Button explores powerlessness, vulnerability, illness and addiction all wrapped up in tender buttons and a cute, cuddly creature. Using animation, sculpture, sound and an intimate space, I surround the viewer in a saccharine nightmare, one that references the dark underbelly of the cute and the sweet. The visual and aural elements are representative of the psychological and emotional states of powerlessness, which are overcome by the act of making and exploring a medium over which I can have complete control.
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Fox, Andrew. "Pushing the button : a quantitative analysis of red button television content in the UK." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/68455/.
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The technological, sociological and cultural position of television, as a method of delivering content, has been the subject of much academic debate in the past twenty years. Perceived threats to television have emerged through the convergence of technologies, which has enabled traditional media forms to take on the characteristics of each other. As a result there is no such thing as a dominant communications medium in the 21st Century, as shared technological characteristics mean that the user can access a multitude of content through one single device. Some believe that television is on the wane, leading to dire predictions of the ‘death’ of television. For others, if television is to survive and develop as a communications medium, it needs to take on one element of convergence by becoming more interactive. There is a substantial amount of academic work which suggests how television can achieve this and what the content provided will do. However, these are merely suggestions, as there is no research which looks at what interactive content actually is. The assumption for scholars, who believe that interactive television is a viable format, is that it is inevitable that interactivity will become an everyday element of television use. Ideas as to how this can be achieved have been put forward but have not been followed up. This research aims to fill that empirical gap and is informed not by what could be but what is. It is clear that digital television has allowed for an additional stream of information to be accessed, through the red button on the remote control. This content provides a variety of options for the viewer, however, the key question, which this research is addressing, is how much of it is interactive? Additional research is now needed to establish just how much of this content exists, what the red button allows the audience member to do and how. Therefore it is necessary to measure and quantify the amount of red button content across a sample of channels, which represent the three types of broadcasting comprising the British broadcasting landscape; public service (the BBC), commercial (ITV) and subscription (Sky).
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Callander, David. "Ett ord säger mer än tusen bilder : En konstnärlig undersökning om att skriva text utifrån karaktärer, scener och känslor från en film." Thesis, Linnéuniversitetet, Institutionen för musik och bild (MB), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-95945.
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Syftet med detta arbete var att undersöka hur man skulle kunna gå till väga för att skriva låttexter genom att ha en film som inspirationskälla. Jag har skrivit tre låtar baserade på filmen ”The Curious Case of Benjamin Button”. Jag kollade igenom filmen två gånger och valde sedan ut scener och karaktärer att jobba vidare med. Det kunde till exempel vara scener med mycket substans att skriva om, samt scener som väckte min egna nyfikenhet. Materialet jag fick utav denna process resulterade i specifika, tidskodade scener och citat från filmen som jag delade upp i separata anteckningar. Detta arbete resulterade i tre låtar där låt 1 har mest fokus på en karaktär, låt 2 har mest fokus på en historia och där låt 3 har mest fokus på en känsla. Musiken är intuitivt skriven och har som syfte att backa upp texten. Jag lärde mig hur viktigt det är med förarbete, och att just ha en metod när man skriver text. Har man det så har man också alltid något att gå tillbaka till. Förhoppningen är att denna metod skall kunna upprepas oavsett vilken genre man helst jobbar med som låtskrivare.
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Mukhija, Punit. "A Wireless Call Button Network Design." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/9763.
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Traditional call button networks that control elevator systems utilize a wired connection for communication. The communication cables are run through the elevator shaft from one call button to another and finally to the controller on the roof. Installing this wired link is highly time consuming. In this thesis, we propose the design for a wireless call button network. Two important features of this wireless network design are low cost and low power consumption. Controller Area Network (CAN) is a widely used protocol for wired networks and has been proposed for use in next generation elevator control systems. A modified CAN for wireless (MCANW) protocol has been developed for the wireless call button network. The wireless link will be implemented via the use of data radios. A modified form of traditional Binary Phase Shift Keying (BPSK) modulation scheme for the radios is proposed. The proposed modulation scheme, like differential BPSK, can be detected non-coherently but it offers better performance than differential BPSK. Its implementation includes an innovative tracking algorithm to maintain synchronization at the receiver.Master of Science
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Morimoto, Kazuhiro, Chiyomi Miyajima, Katsunobu Itou, and Kazuya Takeda. "A Virtual Button Interface using Fingertip Movements." IEEE, 2007. http://hdl.handle.net/2237/9600.
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Ellis, Jonathan Dudley. "Quality assurance by electron beam button melting." Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286213.
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Juncaj, Anton. "Disappearance of tachysterol in white button mushrooms." Thesis, Boston University, 2013. https://hdl.handle.net/2144/12128.
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Thesis (M.A.)--Boston UniversityVitamin D has proven to be an important factor in health through a plethora of studies. Tachysterol is a photoproduct of previtamin D with sun or ultraviolet radiation exposure. While vitamin D is well known for its importance in bone health, the biologic function of tachysterol is unknown. Many vertebrates and fungi can produce vitamin D from a precursor after UV irradiation or sun exposure, including white button mushrooms. This project aims to determine if tachysterol might have a biologic function in white button mushrooms by determining if the disappearance of tachysterol2 was due to some active process in live mushrooms. To provide evidence that tachysterol serves a function, tachysterol2 disappearance in white button mushrooms was monitored after 24 hours. The aim was to create conditions in a white button mushroom, including freezing and microwaving them to determine their effects on tachysterol2 disappearance at 24 hours. The idea was that freezing or microwaving the mushroom would disrupt any metabolic process in the mushroom, providing a clue as to the mechanism of tachysterol2 disappearance. The hypothesis was that freezing and microwaving the white button mushroom would cause a reduction in tachysterol2 disappearance. To evaluate this, 1) white button mushrooms were irradiated with ultraviolet radiation (UVB, 290nm-320nm), 2) an irradiated white button mushroom was frozen, and 3) an irradiated white button mushroom was microwaved. These white button mushrooms were biopsied in triplicate, extracted, and run on high-performance liquid chromatography in order to determine the concentrations of tachysterol2 in the mushrooms. A white button mushroom without UVB irradiation was biopsied in triplicate and extracted to confirm that the store-bought mushrooms did not contain tachysterol2. A tachysterol2 standard was incubated in organic solvent to determine if tachysterol2 was stable. The results showed statistically significant decrease in tachysterol2 for the irradiated mushroom, the frozen irradiated mushroom, the microwaved mushroom 24 hours after irradiation, compared to the standard tachysterol2 in organic solvent. The decrease in tachysterol2 in the microwaved mushroom was 65% in 24 hours, which was not significantly less than in the irradiated mushroom and the frozen irradiated mushroom (p= 0.10 and 0.22, respectively). The decrease in tachysterol2 for the frozen mushroom was 93%, which was not significantly less than the irradiated mushroom (p = 0.21). These findings suggest that microwaving a mushroom at 5mW and 60 seconds and freezing a mushroom does not significantly interfere with metabolic processes that may involve tachysterol2, although microwaving a mushroom trended towards less of a decrease in the tachysterol concentration.
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Kaaresoja, Topi Johannes. "Latency guidelines for touchscreen virtual button feedback." Thesis, University of Glasgow, 2016. http://theses.gla.ac.uk/7075/.
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Touchscreens are very widely used, especially in mobile phones. They feature many interaction methods, pressing a virtual button being one of the most popular ones. In addition to an inherent visual feedback, virtual button can provide audio and tactile feedback. Since mobile phones are essentially computers, the processing causes latencies in interaction. However, it has not been known, if the latency is an issue in mobile touchscreen virtual button interaction, and what the latency recommendations for visual, audio and tactile feedback are. The research in this thesis has investigated multimodal latency in mobile touchscreen virtual button interaction. For the first time, an affordable, but accurate tool was built to measure all three feedback latencies in touchscreens. For the first time, simultaneity perception of touch and feedback, as well as the effect of latency on virtual button perceived quality has been studied and thresholds found for both unimodal and bimodal feedback. The results from these studies were combined as latency guidelines for the first time. These guidelines enable interaction designers to establish requirements for mobile phone engineers to optimise the latencies on the right level. The latency measurement tool consisted of a high-speed camera, a microphone and an accelerometer for visual, audio and tactile feedback measurements. It was built with off-the-shelf components and, in addition, it was portable. Therefore, it could be copied at low cost or moved wherever needed. The tool enables touchscreen interaction designers to validate latencies in their experiments, making their results more valuable and accurate. The tool could benefit the touchscreen phone manufacturers, since it enables engineers to validate latencies during development of mobile phones. The tool has been used in mobile phone R&D within Nokia Corporation and for validation of a research device within the University of Glasgow. The guidelines established for unimodal feedback was as follows: visual feedback latency should be between 30 and 85 ms, audio between 20 and 70 ms and tactile between 5 and 50 ms. The guidelines were found to be different for bimodal feedback: visual feedback latency should be 95 and audio 70 ms when the feedback was visual-audio, visual 100 and tactile 55 ms when the feedback was visual-tactile and tactile 25 and audio 100 ms when the feedback was tactile-audio. These guidelines will help engineers and interaction designers to select and optimise latencies to be low enough, but not too low. Designers using these guidelines will make sure that most of the users will both perceive the feedback as simultaneous with their touch and experience high quality virtual buttons. The results from this thesis show that latency has a remarkable effect on touchscreen virtual buttons, and it is a key part of virtual button feedback design. The novel results enable researchers, designers and engineers to master the effect of latencies in research and development. This will lead to more accurate and reliable research results and help mobile phone manufacturers make better products.
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Bergman, Kevin, and Erik Amgård. "Wireless Communication Using Energy Harvesting Push Button." Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-129458.
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A disadvantage with battery powered circuits is the fact that the battery sometimes can run out of power. If a button that can generate energy by applying mechanical work to it was applied instead of batteries, is it possible to enable a transmitter to stay active long enough to transmit data which can later by received and decoded? This thesis contains a study, in which how to effectively send data wirelessly between a transmitter and receiver module, without the use of any batteries or external power sources, only an energy harvesting push button is constructed and evaluated. There will also be a theoretical comparison between different transmission formats and which is more suitable for a task such as this.
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Wamhoff, Jons-Tobias, Stephan Diestelhorst, Christof Fetzer, Patrick Marlier, Pascal Felber, and Dave Dice. "Selective Core Boosting: The Return of the Turbo Button." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-127748.
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Several modern multi-core architectures support the dynamic control of the CPU's clock rate, allowing processor cores to temporarily operate at speeds exceeding the operational base frequency. Conversely, cores can operate at a lower speed or be disabled altogether to save power. Such facilities are notably provided by Intel's Turbo Boost and AMD's Turbo CORE technologies. Frequency control is typically driven by the operating system which requests changes to the performance state of the processor based on the current load of the system.
In this paper, we investigate the use of dynamic frequency scaling from user space to speed up multi-threaded applications that must occasionally execute time-critical tasks or to solve problems that have heterogeneous computing requirements. We propose a general-purpose library that allows selective control of the frequency of the cores - subject to the limitations of the target architecture. We analyze the performance trade-offs and illustrate its benefits using several benchmarks and real-world workloads when temporarily boosting selected cores executing time-critical operations. While our study primarily focuses on AMD's architecture, we also provide a comparative evaluation of the features, limitations, and runtime overheads of both Turbo Boost and Turbo CORE technologies. Our results show that we can successful exploit these new hardware facilities to
accelerate the execution of key sections of code (critical paths) improving overall performance of some multi-threaded applications. Unlike prior research, we focus on performance instead of power conservation. Our results further can give guidelines for the design of hardware power management facilities and the operating system interfaces to those facilities.
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Inglis, Peter Ward. "Internal stipe necrosis of Agaricus bisporus : etiology and molecular genetic studies." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294300.
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Job, Jacqueline Felicity. "Butoh-Ballet." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13657.
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This dissertation explores intercultural theory through an investigation of butoh methods that shift performance processes of ballet. Theories of Post colonialism and Performance have been interrogated and applied to distill a theme, Butoh-Ballet. A qualitative research approach was undertaken for this study following a short series of dance workshops in butoh carried out on four members of Cape Town City Ballet company, in Cape Town, in 2013. This dissertation will show how butoh could contribute to overcoming colonial constructs, which have penetrated all spheres of South African society including Dance and its discourse. Dance research is fairly new in South Africa and largely situated within Contemporary dance. Ballet in South Africa has received relatively less critical analysis. The dissertation is particularly focused on expanding worldviews beyond a Eurocentric bias. Feminist notions as explicated by Ketu Katrak and Rustom Bharucha are considered in parallel to the philosophies of Maurice Merleau-Ponty. I also borrowed from Gayatri Spivak's notion of 'decolonising the imagination', to suggest that butoh may provide a means for ballet to re-imagine the body and its performance. This study acknowledges my subjective, 'endarkened' voice that emanates from my hybrid identity as Coloured, woman, pioneer Butoh artist, in postapartheid South Africa. I have proposed that butoh balances an external focus of the body found in ballet, with a more spiritually nuanced approach found in butoh. My argument hopefully marks the earliest reflective analysis of the subtle shifts butoh could make to ballet in South Africa today.
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Seyb, Stella Kara. "Emotional appeals: the effects of donation button design on donor behaviour." Thesis, University of Canterbury. Psychology, 2015. http://hdl.handle.net/10092/10269.
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Webpage design is an important factor in the capturing of new donor populations and increasing charitable giving. Charities often use emotional appeals when soliciting donations but little is known about the effects of embedding different verbal triggers directly into donation buttons. The aim of this study was to investigate the effects of three emotional triggers on donor compliance, donation amount and trust in the charity. A between-groups experimental design was used to test six hypotheses regarding the impact of social approval, empowerment, and guilt on donor compliance, donation amount and trust in the charity. Eighty students completed the research protocol using a simulated online donating platform. The hypotheses were not supported and the implications of the findings are discussed within the context of the strengths and limitations of the research design.
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Aman, Amjad. "Numerical Simulation of Electrolyte-Supported Planar Button Solid Oxide Fuel Cell." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5101.
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Solid Oxide Fuel Cells are fuel cells that operate at high temperatures usually in the range of 600oC to 1000oC and employ solid ceramics as the electrolyte. In Solid Oxide Fuel Cells oxygen ions (O2-) are the ionic charge carriers. Solid Oxide Fuel Cells are known for their higher electrical efficiency of about 50-60% [1] compared to other types of fuel cells and are considered very suitable in stationary power generation applications. It is very important to study the effects of different parameters on the performance of Solid Oxide Fuel Cells and for this purpose the experimental or numerical simulation method can be adopted as the research method of choice. Numerical simulation involves constructing a mathematical model of the Solid Oxide Fuel Cell and use of specifically designed software programs that allows the user to manipulate the model to evaluate the system performance under various configurations and in real time. A model is only usable when it is validated with experimental results. Once it is validated, numerical simulation can give accurate, consistent and efficient results. Modeling allows testing and development of new materials, fuels, geometries, operating conditions without disrupting the existing system configuration. In addition, it is possible to measure internal variables which are experimentally difficult or impossible to measure and study the effects of different operating parameters on power generated, efficiency, current density, maximum temperatures reached, stresses caused by temperature gradients and effects of thermal expansion for electrolytes, electrodes and interconnects. Since Solid Oxide Fuel Cell simulation involves a large number of parameters and complicated equations, mostly Partial Differential Equations, the situation calls for a sophisticated simulation technique and hence a Finite Element Method (FEM) multiphysics approach will be employed. This can provide three-dimensional localized information inside the fuel cell. For this thesis, COMSOL Multiphysics version 4.2a will be used for simulation purposes because it has a Batteries & Fuel Cells module, the ability to incorporate custom Partial Differential Equations and the ability to integrate with and utilize the capabilities of other tools like MATLAB, Pro/Engineer, SolidWorks. Fuel Cells can be modeled at the system or stack or cell or the electrode level. This thesis will study Solid Oxide Fuel Cell modeling at the cell level. Once the model can be validated against experimental data for the cell level, then modeling at higher levels can be accomplished in the future. Here the research focus is on Solid Oxide Fuel Cells that use hydrogen as the fuel. The study focuses on solid oxide fuel cells that use 3-layered, 4-layered and 6-layered electrolytes using pure YSZ or pure SCSZ or a combination of layers of YSZ and SCSZ. A major part of this research will be to compare SOFC performance of the different configurations of these electrolytes. The cathode and anode material used are (La0.6Sr0.4)0.95-0.99Co0.2Fe0.8O3 and Ni-YSZ respectively.ID: 031001387; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Adviser: .; Title from PDF title page (viewed May 22, 2013).; Thesis (M.S.M.E.)--University of Central Florida, 2012.; Includes bibliographical references (p. 101-107).
M.S.M.E.
Masters
Mechanical and Aerospace Engineering
Engineering and Computer Science
Mechanical Engineering; Thermofluids
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Holtmeier, Matthew. "Vital Coasts, Mortal Oceans: The Pearl Button as Media Environmental Philosophy." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/7825.
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In The Pearl Button, Patricio Guzman explores the role water played in shaping how the Selk’nam inhabited the coasts of the Tierra del Fuego in Patagonia through “cosmovisions,’ sequences that extend beyond human perception, even as they link the habitation of indigenous peoples to subsequent colonial and political projects. Guzman’s “cosmovisual aesthetic” warrants dissection in the form of a video essay because of its complicated interplay between editing and shot distance, which establishes a critical bioregionalism that acknowledges the unique qualities of place, here the Tierra del Fuego, as well as the forces of globalization that threaten it. Guzman’s cosmovisual aesthetic ranges from extreme close-ups to reveal minute details in objects to aerial shots that articulate the shapes of coasts and even to telescopic shots depicting planets and nebulae. He works with archival photography and the superimposition of images/sounds in order to create a pluriverse of peoples and environments, which moves beyond human audiovisual and temporal perception. In doing so, The Pearl Button links the ways in which the Selk’nam inhabited Chile, depending on its waters, to the ocean as the source of the colonial project of Spain and site of political murders under the later dictatorship of Augusto Pinochet. Guzman’s cinematic elaboration of Indigenous worldviews resonates with contemporary Chilean philosophers Humberto Maturana, Francisco Varela, and Ricardo Rozzi. From cybernetics to ecological philosophy, this video essay weaves the insights of these Chilean philosophers with Guzman’s cosomovisions in order to highlight the complex ecological insights at the intersection of Indigenous thought and film form. In particular, it extends Rozzi’s practical model of Field Environmental Philosophy to communicating ecological philosophy through media.
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Herrmann, Andrew F. "I Hit the Ctrl-Alt-Del Button': Technology Professionals’ Stories of Quitting." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/822.
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Jamba, Lisa A. "Assessing the Usability of a Wearable Computer Interface with Split Button Configuration." UNF Digital Commons, 2011. http://digitalcommons.unf.edu/etd/66.
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A wearable computer interface with split button configuration was constructed using Arduino Lilypad components on the front of a vest with the goal of assessing its usability in an activity involving at least one hand. A sample of twelve men and eight women ages 18 to 62 participated in a usability study of the vest. The activity chosen for this study was a typing test during which users would control a media player remotely with the vest. The usability measures included ease of use, performance of the interface as determined by accuracy rates and time to task completion for both button pressing and the typing test, and comfort. Results indicate the participants found the vest easy to learn and use with no significant effect on the accuracy of the typing activity, but they often needed visual cues to locate the controls. Based on these findings, we offer suggestions for improving the design of the interface and future work we want to pursue after the modifications.
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Keegan, Raphael-John Hernandez. "Isolation and identification of Vitamin D2 photobyproducts in irradiated white button mushrooms." Thesis, Boston University, 2012. https://hdl.handle.net/2144/12440.
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Thesis (M.A.)--Boston University
PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.Vitamin D, the sunshine vitamin, has been long known to be crucial for bone health and more recently it has been discovered to reduce the risk for cancer and several chronic diseases. Unfortunately, vitamin D deficiency affects millions of people worldwide. Therefore, vitamin D supplementation and sensible sun exposure have become more important than ever. Mushrooms are a well-known source of supplementation because of their high concentration of vitamin D's precursor, ergosterol. Irradiation of mushrooms has become popular with the mushroom industry in order to fortify their products with vitamin D. Limited research has been conducted in the kinetics of previtamin D2's conversion to vitamin D2. The goal of this research is to help identify the kinetics of the conversion of previtamin D2 to vitamin D2 in irradiated white button mushrooms (Agaricus bisporus). Mushrooms and ampoules containing ergosterol were irradiated with a RC-500B Pulsed UV Curing System (Xenon Corporation, Woburn, MA) and extracted with 100% methanol. Samples were dried under an N2 stream, and prepared for HPLC. A Zorbax RX-SIL column, and CN column, were used to separate the photobyproducts of previtamin 02, lumisterol, tachysterol and vitamin D2. Photoproducts of previtamin D2 were exposed to room temperature (25° C) and studied with respect to time. A 24 hour time course was conducted, and concluded there to be a statistically significant difference (P less than 0.001) in the conversion of previtamin D2 to vitamin D2 in mushrooms and ampoules at 0 hours and between 6 and 24 hours.
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Fitch, Robert J. "Sunlight readability and luminance characteristics of light-emitting diode push button switches." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4520/.
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Lighted push button switches and indicators serve many purposes in cockpits, shipboard applications and military ground vehicles. The quality of lighting produced by switches is vital to operators' understanding of the information displayed. Utilizing LED technology in lighted switches has challenges that can adversely affect lighting quality. Incomplete data exists to educate consumers about potential differences in LED switch performance between different manufacturers. LED switches from four different manufacturers were tested for six attributes of lighting quality: average luminance and power consumption at full voltage, sunlight readable contrast, luminance contrast under ambient sunlight, legend uniformity, and dual-color uniformity. Three of the four manufacturers have not developed LED push button switches that meet lighting quality standards established with incandescent technology.
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Puntel, Gustavo Orione. "Análise das propriedades antioxidantes das oximas 3-(fenil hidrazona) butano-2-ona e butano-2,3-dionatiosemicarbazona." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/11087.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorOximes are chemical compounds used to reactivate the inhibited acetylcholinesterase (AChE) enzyme by organophosphates (OPs). The OPs, besides classically recognized as AChE irreversible inhibitors, are also involved in the generation of oxidative stress conditions. However, researches focusing on the possible antioxidant properties of oximes are lacking in the literature. The aim of this study was to investigate the potential antioxidant and toxic properties of 3-(phenylhydrazono)butan-2-one oxime and butane-2,3-dionethiosemicarbazone oxime in mice, and to understand the mechanism(s) by which they act. Firstly, we investigated the existence and the mechanism(s) by which 3- (phenylhydrazono)butan-2-one oxime exert its antioxidant properties (Manuscript 1). The obtained results show that in vitro hydrogen peroxide (H2O2), malonate, or ferrous ions (Fe2+)-induced lipid peroxidation was decreased by low concentrations of the oxime. Oxime treatment did not modify the basal peroxidation level nor prevented the induced lipid peroxidation determined ex vivo. The obtained results suggest that 3-(phenylhydrazono)butan-2-one oxime could be employed as a satisfactory antioxidant compound. The absence of toxicity signs after in vivo administration of 3-(phenylhydrazono)butan-2-one oxime to mice may indicate that it could be a safe drug for further studies. The other objective of this study was to investigate the existence and the mechanism(s) by which butane-2,3-dionethiosemicarbazone oxime exert its antioxidant properties (Manuscript 2). The obtained results indicate a significant H2O2, nitric oxide (NO) and 1,1-diphenyl-2-picrylhydrazyl (DPPH●) scavenging activity at low oxime concentrations. Besides, the butane-2,3-dionethiosemicarbazone oxime significantly diminished the deoxyribose degradation induced by Fe2+ or Fe2+ + H2O2, and also the benzoate hydroxylation induced by ferric ions (Fe3+) + H2O2 reaction. Besides, the oxime showed a significant inhibitory effect on s-phenantroline reaction with Fe2+. A significant decrease in the basal and pro-oxidants induced lipid peroxidation in brain, liver, and kidney of mice was observed both in vitro and ex vivo. In addition, in our ex vivo experiments the butane-2,3- dionethiosemicarbazone oxime did not determine significant changes in thiol (-SH) levels of liver, kidney and brain, as well as did not modify the delta-aminolevulinate dehydratase (δ- ALA-D) activity in these tissues of mice. The obtained results indicate that the oximes tested depicted significant antioxidant properties, and that further studies are necessary to improve our knowledge regarding the exact antioxidant action mechanism of these oximes.
As oximas são compostos químicos utilizados para reativar a enzima actilcolinesterase (AChE) inibida por organofosforados (OPs). Os OPs, além de serem classicamente reconhecidos como inibidores da AChE, também estão envolvidos em situações que geram estresse oxidativo. Contudo, pesquisas enfocando as possíveis propriedades antioxidantes das oximas são escassas na literatura. O objetivo deste estudo foi investigar o potencial antioxidante e as propriedades tóxicas das oximas 3-(fenil hidrazona) butano-2-ona e butana- 2,3-dionatiosemicarbazona em camundongos, e entender o(s) possível(is) mecanismo(s) pelo(s) qual(is) elas atuam. Inicialmente investigamos a existência, e o(s) mecanismo(s) pelo(s) qual(is) a oxima 3-(fenil hidrazona) butano-2-ona exerce suas propriedades antioxidantes (Manuscrito 1). Os resultados obtidos mostram que a peroxidação lipídica induzida por peróxido de hidrogênio (H2O2), por malonato, e por íons ferrosos (Fe2+) foi diminuída em baixas concentrações da oxima. O tratamento dos camundongos com a oxima não alterou os níveis basais de peroxidação lipídica, nem preveniu a peroxidação lipídica induzida em experimentos ex vivo. Os resultados obtidos sugerem que a oxima 3-(fenil hidrazona) butano-2-ona pode ser empregada como um satisfatório composto antioxidante. A ausência de sinais de toxicidade após a administração in vivo da oxima 3-(fenil hidrazona) butano-2-ona em camundongos indica que esta pode ser uma droga segura para futuros estudos. O outro objetivo deste estudo foi investigar a existência e o(s) mecanismo(s) pelo(s) qual(is) a oxima butana-2,3-dionatiosemicarbazona exerce suas propriedades antioxidantes (Manuscrito 2). Os resultados obtidos indicam uma significativa atividade da oxima em neutralizar H2O2, o radical 1,1-difenil-2-picrilhidrazil (DPPH●), e a formação de óxido nítrico (NO), em baixas concentrações. Além disso, a oxima butana-2,3-dionatiosemicarbazona diminuiu significativamente a degradação da desoxirribose induzida por Fe2+ e pela reação Fe2+ + H2O2, e também a hidroxilação do benzoato induzida pela reação íons férricos (Fe3+) + H2O2. Além disso, a oxima apresentou um efeito inibitório significativo na reação da s- fenantrolina com Fe2+ Uma diminuição significativa na peroxidação lipídica basal e na peroxidação lipídica induzida por agentes pro-oxidantes no cérebro, fígado e rim de camundongos foi observada tanto in vitro quanto ex vivo. A oxima butana-2,3- dionatiosemicarbazona não determinou mudanças nos níveis de tióis (-SH) no fígado, rim e cérebro, bem como não modificou a atividade da enzima delta-aminolevulinato desidratase (δ-ALA-D) nestes tecidos de camundongos em experimentos ex vivo. Os resultados obtidos indicam que as oximas testadas apresentaram propriedades antioxidantes significativas, e que futuros estudos são necessários para aumentar o conhecimento a respeito do exato mecanismo de ação antioxidante destas oximas.
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Valter, Silvana da Silva. "Blendas de poli (1-buteno) / poli (propileno-co-1-buteno-co-etileno) : cinetica de cristalização e morfologia." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248723.
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Orientador: Maria do Carmo GonçalvesDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica
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Resumo: Neste trabalho foram estudadas blendas cristalinas de poli(1-buteno) com o copolímero de poli(propileno-co-1-buteno-co-etileno). A influência do tempo de envelhecimento nas características estruturais e nas propriedades térmicas e mecânicas do iPB puro e das blendas de iPB/copolímero foram estudados por difratometria de raios X, termogravimetria (TG), calorimetria diferencial de varredura (DSC) e análise dinâmico-mecânica (DMA). O efeito da adição de copolímero e das condições de cristalização sobre a morfologia dos cristais de iPB foi avaliada por microscopia óptica (MO) e por microscopia de força atômica com modo de força pulsada digital (DPFM). A estabilidade térmica apresentada pelas blendas de iPB/copolímero foi similar à dos polímeros puros. O iPB recém-preparado apresentou cristais de forma II que foram transformados em cristais termodinamicamente estáveis de forma I com o envelhecimento à temperatura ambiente. O grau de cristalinidade obtido para os cristais de forma II e I não foi alterado com a adição de copolímero. Porém, o módulo de armazenamento aumentou com o tempo de envelhecimento e reduziu com o aumento da concentração de copolímero. O iPB apresentou morfologia esferulítica nas diferentes condições de cristalização utilizadas, porém a temperatura de cristalização afetou a densidade de núcleos e a taxa de cristalização. As técnicas microscópicas evidenciaram a segregação do copolímero entre os feixes de lamelas e entre os esferulitos de iPB. Em blendas com concentração superior a 30% de copolímero foram identificados domínios de segregação de fases no estado fundido e que o processo de cristalização ocorreu a partir de nucleação heterogênea. Foi também observado que a transição cristalina do iPB alterou a morfologia das blendas, promovendo a distribuição mais uniforme dos domínios da fase amorfa entre os cristais de iPB. Os parâmetros de Avrami calculados confirmaram a formação de estruturas esferulíticas e a sobreposição de nucleação primária e secundária com o crescimento dos esferulitos. Concluindo, o conjunto de resultados obtidos permite propor que blendas de iPB/poli(propileno-co-1-buteno-co-etileno) apresentaram miscibilidade parcial em concentrações de copolímero inferiores à 20% e imiscibilidade em concentrações mais altas.
Abstract: In this work crystalline blends of isotactic poly(1-butene) and poly(propylene-co-1-butene-co-ethylene) copolymer has been studied. The effect of aging time on the structural and thermal characteristics of these blends has been investigated by X-ray diffraction, thermogravimetry (TG), differencial scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The effect of the addition of copolymer as well as the crystallization conditions on the morphology of iPB crystals was evaluated by polarized light microscopy (OM) and atomic force microscopy in digital pulsed force mode (DPFM). The thermal stability presented by the blends of iPB/copolymer was closed to that one of the pure copolymer. The as-crystallized iPB sample showed crystals of the kinetically favored tetragonal form II, which were transformed to the stable hexagonal crystalline form I with increasing aging time at room temperature. The degree of crystallinity for form II crystals did not change with the addition of the copolymer. However, storage modulus was increased with the increase of the aging time and decreased with the increase of the copolymer concentration. The iPB samples presented spherulitic morphology for different crystallization conditions, however, the crystallization temperature affected the nucleus density and crystallization rate. The microscopic techniques demonstrated that the copolymer segregation occurred between iPB crystalline lamellae and at the interspherulitic regions. In blends containing copolymer concentration higher than 30wt% it were identified phase segregation domains in the melt state and that the crystallization process occurred through heterogeneous nucleation. It was also observed that the iPB crystalline transformation changed the blend morphology, promoting a more uniform distribution of amorphous phase domains in the iPB crystals. The Avrami parameters calculated confirmed the formation of spherulitic structures and the combination of primary and secondary nucleation during the spherulite growing. Based on the obtained results, it is proposed that the iPB/ poly(propylene-co-1-butene-co-ethylene) blends presented partial miscibility at copolymer concentration lower than 20% and immiscibility at higher copolymer concentrations.
Mestrado
Físico-Química
Mestre em Química
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GAMA, LARA SERGIO ARTURO 327203, and LARA SERGIO ARTURO GAMA. "Síntesis De Nanopartículas De Platino Por Métodos Químicos Y Biológicos Soportadas En Hueso De Bovino Y Su Evaluación Catalítica En La Reacción De 2-Butino-1,4-Diol A 2-Buteno-1,4-Diol." Tesis de doctorado, Universidad Autónoma del Estado de México, 2016. http://hdl.handle.net/20.500.11799/65222.
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The purpose of this study was to synthesize monodispersed platinum nanoparticles on a bovine bone which is a renewable bio-support, at low cost. This support has not been previously reported. In addition, this support was used in the hydrogenation catalytic conversion of 2-butyne-1,4-diol to 2-butene-1,4-diol. Platinum nanoparticles supported on bovine bone powder were obtained by two methods: a straight forward method that eliminates the calcination step of the conventional catalyst preparation methods. The average size of the nanoparticles obtained was 2.2 nm. Arnica tea was used as reducer of platinum nanoparticles, the average size of the nanoparticles obtained was 8.4nm. The characterization of platinum nanoparticles was performed using SEM, TEM and XPS analysis. As a catalyst for the 2-butyne-1,4-diol hydrogenation, a nearly 100% conversion in both cases, and 83% selectivity towards 2-butene-1,4-diol were attained by the fist method and 96% by the second.
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Rooney, Eimear. "Ecology and breeding biology of the common buzzard Buteo Buteo, in Ireland." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.602951.
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Biogeographical patterns have implications [or interactions between species and can result in regional variation in resource use and behaviour. This thesis examines the current status, ecology and prey selection of an avian predator. the common buzzard Buteo buteo living at the western edge of its biogeographical range in Ireland, a large island at the extreme western fringe of Europe (53 oN. 7°W) where diversity of prey and competing avian predators is relatively low, as the population continues to expand following extinction from Ireland sixty years ago. The core breeding population of buzzards in now covers a third of the island and indicates influx of birds of Britain and continental Europe which is further supported by the level of heterozygosity in the population. High relatedness between individuals over large areas also suggests a high frequency of long distance dispersal by individual buzzards within Ireland. The current population is estimated at 3,312 breeding pairs in Ireland. With a potential carrying capacity of the island of 23,374 breeding pairs. Buzzard dietary breadth gets wider towards the west of their range across Europe. and is particularly wide in Ireland. This suggests that raptor species at the edge of their range, where resources are reduced and environmental pressures increased, have to be highly flexible if they are to survive. A supplementary feeding experiment showed that prey abundance is particularly limiting in the early stages of the breeding season, and productivity of buzzards in Ireland related to the amount of rabbit in the breeding season diet. However, a fifth of the breeding season diet was made up of corvid species indicating the importance of alternative prey. Trophic upgrading, through determining why so many species of birds of prey have been unsuccessful in natural population recovery in Ireland, and community restoration are required if we are to return to sustainable, dynamic and species rich ecosystem in which the buzzard is no longer dominant.
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Walter, Simon [Verfasser], and Peter [Akademischer Betreuer] Wasserscheid. "Reaktionstechnische Untersuchungen an Supported-Ionic-Liquid-Phase (SILP) Katalysatoren zur Hydroformylierung von Buten und Verfahrensaspekte zur Umsetzung von n-Butan zu Aldehyden / Simon Walter. Gutachter: Peter Wasserscheid." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/1075839297/34.
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Estrada, Bryan G. "Take Me Back: A Study of the Back Button in the Modern Internet." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/553.
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The web browser has become one of the most recognizable software applications on consumer desktops. Yet its utilization and capabilities are often misunderstood. Recent innovations in the web have evolved the Internet into a network of sophisticated applications that defy historical uses of the “browser”; a term that itself has become somewhat of a misnomer. This research studies the evolving set of user expectations for the browser as an application platform and challenges certain anachronistic features, specifically the “back” button, that are unnecessary and confusing given the new environment that browsers are used in. Because of this shift, implicit new user requirements arise around the browser’s user interface. The back button, like other elements in the browser have already demonstrated, should be de-emphasized in modern iterations of web browsers. The study is qualified by an analysis of user behavior within a popular, modern, web application.
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Rajguru, Chinmay. "GAME-CENTERED GAMEPADS: FABRICATING AND 3D PRINTING." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2256.
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Fabricating and 3D printing gamepads is challenging not only in terms of appearance of them but also in terms of their physical validity and user experience that they might provide. This thesis addresses the issue of providing users the ability to hold in their hand a fabricated gamepad, which is an object similar to that the virtual character keeps in his/her hand inside the virtual world. Thus, this thesis presents a basic approach for converting 3D objects found in a variety of online datasets to functional gamepads by retargeting the structure of the gamepad’s buttons to the 3D model. The fabricated gamepads can then be used by gamers to enjoy their favorite game. The authors assumed that gamepads that have a relationship with the game enhance the game experience of users. This assumption is mainly based on a variety of previous work that investigates the use of “natural” interfaces. Therefore, in addition to the proposed approach, a two-part user study was also conducted to firstly understand whether the fabricated gamepads can be considered as valid physical objects and also to understand the way that participants experienced a game. First, the results indicated that the fabricated gamepads can be considered as valid physical objects and secondly, that they enhance the gaming experience of the users.
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Neumann, Catherine [Verfasser]. "Untersuchungen zum klinischen Einsatz von Propofol beim einheimischen Mäusebussard (Buteo buteo) / Catherine Neumann." Berlin : Freie Universität Berlin, 2014. http://d-nb.info/1047796732/34.
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Hassila, Karlsson Carl Johan. "Tribological testing of top hammer drill buttons." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-280881.
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In the present work further modifications are implemented to an existing test setup for the evaluation of the wear of cemented carbide drill buttons in rock drilling applications. The test setup has been evaluated in previous diploma works, which has shown that the test successfully mimics the wear seen in rock drilling applications. The new modifications include friction and normal force measurements together with the collection of rock debris. This has been made possible by redesigning the sample holder and by manufacturing equipment making rock debris collection possible. The new modifications to the test setup were evaluated by comparing the wear of three different cemented carbide grades tested against sandstone and granite with two different loads. The data collected from the new modifications were found to be robust with lower than expected spread of data. The coefficient of friction when testing against sandstone was higher than when testing against granite. More adhered material was observed on the wear surface when testing against granite than against sandstone. Load dependence on the wear of the cemented carbide buttons is only seen for the softer cemented carbide grades when testing against sandstone. The wear of the buttons indicates a high dependence on the hardness of the different grades as shouldbe expected. This diploma work has been performed for Sandvik Mining, Rock Tools,a world leading supplier of rock drill equipment.
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Rahali, Ali Borreli Guy. "Références culturelles et littérature dans "Passage de Milan", "L'Emploi du temps" et "La Modification" de Michel Butor." Nancy : Université Nancy 2, 2002. http://cyberdoc.univ-nancy2.fr.
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Wagner, Nathan. "Turning Back Time: Duration, Simultaneity, and the Timeless in Fitzgerald and Fincher's Benjamin Button." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/english_theses/85.
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This MA thesis seeks to apply Henri Bergson’s theory of time to a reading of F. Scott Fitzgerald’s “The Curious Case of Benjamin Button,” and David Fincher’s film adaptation of the text, The Curious Case of Benjamin Button. By applying Bergson’s notions of durée and simultaneity, timeless moments will be seen to emerge in the text and the film. I place Fitzgerald’s text in context with other seminal modernist works in order to provide a study of the importance of the story within its time period. Through Deleuze’s application of Bergson to cinema, I analyze the evolution of the time-image within Fincher’s film, and place it within the context of a cinema of time. Ultimately, this thesis begins a discussion of the importance of how F. Scott Fitzgerald and Fincher’s works contribute meditations on time in their respective time periods and media.
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Hofmann, Ruben Alexander. "Der Red Button im Rundfunkrecht : interaktive Anwendungen im digitalen Fernsehen und ihre rundfunkrechtliche Einordnung /." Herzogenrath : Shaker, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016745890&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Bützow, Tarja. "Gonadotropins and metabolic features in the pathophysiology and treatment of polycystic ovary syndrome." Helsinki : University of Helsinki, 2000. http://ethesis.helsinki.fi/julkaisut/laa/kliin/vk/butzow/.
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Kampakoglou, Kyriaki. "Neuromarketing : Validity and Morality." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-16794.
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The new way of doing marketing the so -called neuromarketing, which is a combination of neuroscience findings collected for and used in the marketing domain, has raised a lot of support but a lot of critic as well. The research question is focusing on whether the neuromarketing has been an approach of explaining and defining the human behavior, or whether it has transformed to an unethical manipulation of consumers in order to discover the much wanted “buy button” in consumers’ brains. Additionally issues of validity of neuromarketing researches is to be examined as well their purpose of conduction and the use of their findings.Program: Master in Fashion Management with specialisation in Fashion Marketing and Retailing
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Björertz, Mikael. "Development tool for push-buttons inside truck cabin." Thesis, Linköping University, Department of Mechanical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4808.
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When developing the driver interface in their trucks, Scania is highly concerned with creating a certain feeling. When pressing a push-button this Scania feeling shall be perceived. It is not obvious what the Scania feeling really is and there is no predefined method to create it. This Master Thesis takes aim at providing the means to improve the process of creating this feeling.
First, the Scania feeling was studied via the results of an already made survey at Scania. This survey focused on subjective properties of push-buttons, rotary knobs and levers and related the properties to whether these objects had a Scania feeling or not. This existing data was analyzed statistically. The main task of this Master Thesis, however, was to create an environment where the feeling of a push-button could be tried out and described. This environment was created with a tool from Reachin Technologies AB. The environment is a virtual representation of a push-button module, created with computer haptics and graphics. The environment lets the user interact with a three dimensional view collocated with a force feedback device. The force feedback device lets the user feel what is seen through a pen like interface. The “tip” of the pen is used to touch what is seen in the 3D view. The virtual push-buttons was built from blueprints of real push-buttons to be able to evaluate to what extent the virtual buttons resembled the real ones.
The statistical analysis made in this project does not support the notion of describing the Scania feeling with a set of subjective values. The virtual environment created proved to be very life like. The real push-button feeling could be recreated with high precision. When evaluated, the majority of test persons argued that it could be used in the development process.
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Googer, Georgia. "The Radical Ekphrasis Of Gertrude Stein's Tender Buttons." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/889.
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This thesis offers a reading of Gertrude Stein’s 1914 prose poetry collection, Tender Buttons, as a radical experiment in ekphrasis. A project that began with an examination of the avant-garde imagism movement in the early twentieth century, this thesis notes how Stein’s work differs from her imagist contemporaries through an exploration of material spaces and objects as immersive sensory experiences. This thesis draws on late twentieth century attempts to understand and define ekphrastic poetry before turning to Tender Buttons. Although the question of categorizing Tender Buttons has been an issue since its original publications, few have noted its essentially ekphrastic nature. Doing so, I argue ekphrasis helps to account for the way Stein’s poetry interacts with spatiality and temporality, illustrates sensory experiences, and plays with the multiplicity of language while also provoking readers to re-interpret their own experiences.
My work with Tender Buttons seeks to extend the theoretical conversation. Applying a categorical term like ekphrasis to Stein’s work forces readers to interact with the descriptions in the text, in conjunction with their own experiences, in a way that elevates the objects rendered to pieces of art. Via an analysis of spatiality/temporality, invocations of the senses, and the plurality of diction in every poem, the reader can experience Tender Buttons through a unique and individualized approach that openly invites her to ask questions about Stein’s world and her own material surrounds. Essentially, I offer a reading of Tender Buttons as a collection that fastens materiality with language, asking anyone who interacts with the text to ask questions about the boundaries between verbal and visual material.
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Neubeck, Knut. "Evaluierung des Rehabilitationserfolges von Mäusebussard (Buteo buteo) und Habicht (Accipiter gentilis) mittels Radiotelemetrie und Ringfunden." Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-106051.
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Francksen, Richard Michael. "Exploring the impact of common buzzard Buteo buteo predation on red grouse Lagopus lagopus scotica." Thesis, University of Newcastle upon Tyne, 2016. http://hdl.handle.net/10443/3365.
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The relationship between raptors and red grouse Lagopus Lagopus scotica is one of the most topical and contentious wildlife management issues in Britain. The common buzzard Buteo buteo is a generalist raptor which has increased in population and range in Britain during the last 40 years, which in most areas represents a recovery following historical declines. Increasingly, this has reignited conflict with managers of gamebirds concerned about the impact of buzzard predation. Whilst the impact of buzzards on reared pheasants Phasianus colchicus has previously been assessed, the impact of buzzards on red grouse has not been investigated. I aim to address this knowledge gap by providing an insight into the predator-prey relationship between buzzards and red grouse. I have explored the diet, foraging patterns and responses to changing prey abundances of buzzards on a moorland site managed for red grouse in south-west Scotland. First, I investigated the biases associated with methods of assessing raptor diet. I demonstrated that methodological biases exist and that these can vary over time in relation to natural temporal variations in raptor diet composition. I then investigated functional and numerical responses of buzzards to annual changes in prey abundance. Following declines in vole abundance, buzzards selected a wider range of prey, but consumption of red grouse did not increase, and there was no evidence of a numerical response. Results suggested that buzzard predation of red grouse may be incidental in nature, whereby high vole abundances encouraged buzzards to hunt in red grouse habitats. Next, I explored buzzard foraging patterns in relation to prey and habitat. Buzzard foraging intensity varied in line with annual variations in vole abundance, and buzzards hunted in areas with more red grouse during the winter. Buzzards avoided heather dominated areas in years when vole abundance was low, but not when vole abundances were high. Results again suggested that incidental buzzard predation of red grouse could increase when vole abundances are high. However, I found no evidence that variations in buzzard foraging intensity influenced grouse mortality indices. iii I then described buzzard diet during the winter with the aid of remote tracking methods. Buzzard diet was primarily composed of small mammals, and red grouse were less likely to feature in the diet of buzzards roosting in grassy areas. Next, I produced estimates of the potential removal of grouse by buzzards using bioenergetics modelling. The results suggested that whilst the removal of grouse by an individual buzzard is likely to be small, the total number of grouse removed could be considerable if buzzard populations are high and predation of grouse is additive to other causes of mortality. Finally, key results are discussed and placed in a wider context of upland and gamebird management in Britain. Recommendations are made for future study to improve our understanding of these systems, and for testing possible mitigation and management techniques. This study could have wider implications for the management of economically important or threatened species, alongside recovering populations of protected raptors, and may provide a useful framework for studying similar systems elsewhere.
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Phiriyapokanon, Tanid. "Is a big button interfaceenough for elderly users? : Towards user interface guidelines for elderly users." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12247.
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In the world today, the portion of aging people grows continuously. Due to successfulof healthcare services, people are living longer and the number of newborn isdecreasing. This can imply that the population of young and working people isdecreasing in many countries. This leads to the mean value incrementing of the meanworld population’s age value in the whole world. It has become more and moreimportant to consideration human factors of elderly people in many businesses.Software companies have to consider design of software concerning of usability forageing people. Currently, most of the software is designed to support younger users.To support elderly users, we have to consider more on age-related differences. Thisthesis presents a literature survey, and related theories used in designing graphic userinterface for ageing people. Besides, criteria for designing software for older users arealso discussed and suggested as guidelines for future studies and development. Thepurpose is to improve older users’ potential in using information technologies, and topotentially allow older users to gain more benefit from using of computer software.A case study for software design for elderly users was implemented to verifysuggested guideline and gain deeper design understanding. The elderly volunteerswere involved in design evaluation process. The results from case study have showneffectiveness of the design guideline approach.
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Siyoum, Nazareth Afewerki. "Microbial dynamics of different casing materials in the production of white button mushrooms (Agaricus bisporus)." Thesis, University of Pretoria, 2012. http://hdl.handle.net/2263/30785.
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Peat is a suitable casing layer most commonly used as a substrate in commercial production
of white button mushrooms. However, further exploitation of this substrate in South Africa is
restricted due the environmental status of this scarce and protected natural resource.
Therefore, finding an easily available and economically viable casing material that can either
partially or completely replace peat is important for sustainable mushroom production. In the
process of finding a replacement material, information regarding the microbiological
properties of peat and alternative casing materials is required to profile a natural stable
ecosystem since the presence of bacteria in the casing layer is important for pinning and fruit
body formation. Pseudomonad bacteria in the casing layer are known to play a role in the
fructification of mushroom mycelium. The aim of this study was to investigate the microbial
dynamics and profiles of peat, industrial by-products and peat-based mixtures with byproducts
using cultural and a culture-independent molecular technique such as denaturing
gradient gel electrophoresis (DGGE). Other aims of this study were to investigate the overall
microbial profiles of compost, casing and mushrooms in a commercial mushroom production
cycle and to evaluate effects of isolated micro-organisms on mycelial growth, mushroom
yield and in vitro disease control. Total bacterial population densities in peat-based mixtures
at pinning were comparable to that of peat alone and pseudomonads constituted part of
bacterial populations in these mixtures. Other bacteria in peat and the mixtures included
Ensifer spp., Sinorhizobium spp., Bacillus spp., Sporosarcina spp., Microbacterium spp.
Arthrobacter spp. and Sphingobacterium spp. Bacterial profiles of peat at pinning also
showed dominant bacteria other than pseudomonads including Bacteroidetes, alpha-Proteobacterium, beta-Proteobacterium, gamma-Proteobacterium, delta-Proteobacterium
and uncultured species. In viewing the overall microbial profile of compost, casing and
harvested mushrooms, bacterial profiles of mushrooms were more similar to those of casing
than to compost and were dominated by pseudomonads. Fungal profiles of compost, casing
at pinning and freshly harvested and stored mushrooms were completely dominated by
Agaricus bisporus. Bacterial and yeast populations increased significantly during mushroom
storage at 4oC while fungal populations remained low. Pseudomonas spp. and an
Arthrobactor sp. isolated from casing resulted in 100% in vitro growth stimulation of A.
bisporus. Several bacteria and yeasts isolated from compost, casing and mushrooms
inhibited in vitro growth of the fungal mushroom pathogens Verticillium fungicola var
aleophilum, V. psalliotae, Mycogone perniciosa, Cladobotryum dendroides, C. mycophilum,
Trichoderma aggressivum f. europaeum, T. aggressivum f. aggressivum and T. harizianum.
In conclusion, peat-based casing mixtures with industrial by-products harbour bacteria
important in A. bisporus fructification. Bacteria in these casings are also important in other
aspects of mushroom production such as growth stimulation. Based on results in this study,
mushroom bacterial profiles are similar to those of the casing, suggesting postharvest quality
may be controlled by manipulating casing bacteria.Thesis (PhD)--University of Pretoria, 2012.
Microbiology and Plant Pathology
Unrestricted
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barbe, Frances. "The diference Butoh makes: a practic-based exploration of Butoh in contemporary performance and performer training." Thesis, University of Kent, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590075.
Full textAbstract:
My choreographic works Fine Bone China, Palpitation and Chimaera form a body of work-drawirrg-on-i-a:panes-e-bu-tefr.-E-a€R----p-roduGtiQ-Il emphasises a, different aspect of butoh, allowing for a study of the difference butoh makes to the process of creation and performance. Fine Bone China explores the interaction between physical score and psychophysical subscore. and the distinction between "figure" and "character". The group work, Palpitation, challenged performers with extreme reduction or distillation (stillness, simplicity and slow motion) and emphasised kinaesthetic listening and response in ensemble work. Chimaera focused on the transformation and objectification of the butoh body. Alongside these performances, original training methodologies developed that contribute to knowledge and understanding of but oh and performer training. Examples of performance and training practice are presented on DVD and in photo galleries. The written thesis reflects critically on the process of making this body of work, and culminates in a consideration of the butoh body as an objectified, marionette-like body, drawing on the famous historical essays of Edward Gordon Craig and Heinrich von Kleist, and terms such as the "dead body" from butoh and the "lived body" from phenomenology are unraveled. The thesis locates the body of work within the wider context of global butoh and contemporary performance. It does not seek a reductive definition of butoh or ask, "what is butoh?" Instead the thesis considers what values are discernible in butoh or butoh-based work? What demands does it place on the performer and on the spectator? What is distinctive about butoh dramaturgy? How do butoh artists train or prepare for butoh, given that butoh is not a technique or a style of performance? What contribution ( difference) has butoh made to late twentieth century dance and performance? What aspects of but oh are transferable and relevant to current, contemporary performance and why have western performers turned to butoh to complement their work? iv
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ROCHA, Diego Augusto Pereira da. "Butoh: o artesão de si mesmo." Universidade Federal do Pará, 2018. http://repositorio.ufpa.br/jspui/handle/2011/10388.
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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
A presente dissertação trata de uma análise crítica sobre o processo criativo de Tatsumi Hijikata, quando em sua produção do butô. A partir das observações aferidas, busco encontrar parâmetros que permitam identificar dentro do procedimento dito como corpo morto, relações com a ideia de não lugares para através desta leitura de corpo propor uma concepção a respeito do trabalho do atuante cênico intitulada de “não corpo”.
The present article deals with a critical analysis of the creative process of Tatsumi Hijikata, when in his butoh production. From the verified observations, I seek finding parameters that allow identifying within the procedure said as dead body, relations with the characteristics of non-places proposed by Marc Augé, for through this body reading to propose a conception regarding the work of the scenic actor entitled of "no body".
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Miehé, Christian. "Michel Butor et la critique d'art." Montpellier 3, 2009. http://www.biu-montpellier.fr/florabium/jsp/nnt.jsp?nnt=2009MON30065.
Full textAbstract:
Cette thèse analyse les relations entre les écrits de Michel Butor et les arts plastiques. Si l’auteur est connu pour sa participation au Nouveau Roman, son apport très personnel à la critique d’art et la spécificité de son approche poétique par rapport à la création artistique ont été longtemps négligés. Une approche tripartite structure cette recherche. Une première partie traite des « Sources d’influence », allant des années de jeunesse aux liens avec l’œuvre critique de Diderot, Baudelaire, Claudel, Breton et Sartre. Elle cerne la notion de critique d’art et analyse des exemples pris dans divers textes de Butor. La seconde partie, nommée « Un glissement critique » analyse les textes de critique d’art ou d’histoire de l’art se rapportant à des artistes connus : classiques, modernes et contemporains. Elle montre l’importance de la démarche butorienne dans ce registre et ouvre sur la notion d’entretien au sens large. La troisième, dénommée « L’après critique ou la transposition » interroge le phénomène de cette transposition poétique qui prend le relais de la critique d’art. Des textes écrits une première fois se trouvent réagencés dans des ensembles plus vastes et composent une nouvelle approche de l’œuvre d’art. Cette analyse montre donc l’évolution de l’attitude de Michel Butor par rapport aux artistes et à leurs œuvres ainsi que le glissement de son écriture qui va d’une critique d’art pure à une transposition d’ordre poétiqueThis thesis explores the relationship between Michel Butor's writing and the visual arts. Butor is well known for his role in the "Nouveau roman", but his very personal contribution to art criticism together with his poetic approach to artistic creation have received scant attention. The structure of this thesis is tripartite. The first deals with "sources of influence". It analyses Butor's biography, pinning down the notion of art critic and examining his links with the writings on art of Diderot, Baudelaire, Claudel, Breton and Sartre. The second part, entitled "A critical shift", analyses texts of criticism or art history dealing with well-known artists, be they classical, modern or contemporary. It reveals the importance of Butor's approach in this domain and opens out into the notion of dialogue in the broad sense of the term. The third part, entitled "After criticism or transposition" examines the poetic transposition which takes over from art criticism. Texts undergo a rearrangement of their original writing to become encompassed in larger entities, ushering in a new approach to art criticism. This study thereby traces a development in Michel Butor's attitude to artists and their work, mirrored by a shift in his own writing moving from pure art criticism to a poetic transposition
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Zipp, Alexander. "Metathese von 1-Buten an Rheniumoxidkatalysatoren." Phd thesis, [S.l. : s.n.], 2005. https://tuprints.ulb.tu-darmstadt.de/568/1/diss_zipp_a.pdf.
Full textAbstract:
Im Rahmen der Arbeit wurde die Desaktivierung hochaktiver Rheniumoxid-Trägerkatalysatoren (Re2O7/γ-Al2O3) bei der Metathese von 1-Buten zu den Hauptprodukten Ethen und 3-Hexen in flüssiger Phase untersucht. Die Reaktion ist nicht nur im Hinblick auf eine Umsetzung des als Nebenprodukt beim Steam-Cracken anfallenden 1-Butens zu wertvolleren Produkten interessant, sondern ist auch als eine generelle Beispielreaktion für Umwandlung petrochemisch erzeugter Alkene zu sehen (OCT, von engl. Olefin Conversion Technology). Die Untersuchungen wurden in einer speziellen Versuchsapparatur mit einem so genannten Spinning-Basket Reaktor unter dem Einsatz sowohl industrieller als auch selbst präparierter Katalysatoren durchgeführt. Durch die Experimente gelang es die Desaktivierung der Katalysatoren unter dem Einfluss verschiedenster Parameter, wie den Betriebsbedingungen oder unter Beigabe zahlreicher Zusätze zu untersuchen. So konnte beispielsweise gezeigt werden, dass die Desaktivierung durch die Zugabe kumulierter Diene und organischer Basen stark beschleunigt werden und ihre Geschwindigkeit durch die Zugabe von Ethen oder Wasserstoff signifikant verringert werden kann. Im Rahmen der kinetischen Modellierung der Daten wurde ein komplexes chemisches Modell aufgestellt, das mit den experimentellen Ergebnissen in Einklang steht. Die daraus erhaltenen Geschwindigkeitskoeffizienten bestätigen die qualitativ gefundenen Ergebnisse. Ergänzend zu den kinetischen Messungen wurden infrarotspektroskopische Untersuchungen unter Einsatz der Diffusen-Reflexions-Infrarot-Fourier-Transformations-Spektroskopie (DRIFTS) zu den Ursachen der desaktivierenden Reaktion(en) durchgeführt. Das Bandenwachstum in den zeitlich veränderlichen Spektren zeigt eine offensichtliche Korrelation mit den kinetischen Ergebnissen. Die Zuordnung der Bandenlagen zu potentiellen Schwingungsmodi konnte aufgrund der systemimmanenten Komplexität noch nicht vollständig aufgeklärt werden, dennoch scheint mit der DRIFTS die direkte Untersuchung der desaktivierenden Prozesse möglich zu sein. Möglicherweise können mit dieser Technik wertvolle Hinweise auf den Mechanismus der Desaktivierung gewonnen werden, mit dessen Kenntnis gegebenenfalls rationelle Strategien zur Vermeidung der Desaktivierung möglich sein könnten.
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Hahnemann, Ulrich. "Die Geschichte der sächsischen Knopfindustrie - Ihr historischer Werdegang von der handwerklichen Fertigung von Knöpfen bis zur industriellen Massenproduktion im Zeitraum von 1763 bis 1933." Doctoral thesis, Universitätsbibliothek Chemnitz, 2002. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200201093.
Full textAbstract:
Gegenstand der Dissertation ist ein ehemals wichtiger Zweig der sächsischen Bekleidungs- und Textilwirtschaft - die Knopfherstellung. Dargestellt wird dabei aber nicht ausschließlich die kulturgeschichtliche Entwicklung des "Objektes Knopf", sondern vorrangig die Herausbildung der Knopfherstellung als eigenständiger Zweig der sächsischen Wirtschaft vom Zunfthandwerk über die Manufaktur bis hin zur Fabrikindustrie von nationaler und weltwirtschaftlicher Bedeutung. Die Herstellung von Knöpfen oblag nicht einem Handwerk allein. Entsprechend dem verwendeten Material gehörten die daraus gefertigten Knöpfe zum Produktionssortiment verschiedener Handwerker. Knöpfe aus Messing, Tombak, Zinn, Eisen oder Stahl gehörten hauptsächlich zum Arbeitsgebiet der Gürtler, Nadler und Zinnknopfmacher. Teilweise veredelten sie ihre Knöpfe durch vergolden oder versilbern. Knöpfe aus Holz, Bein, Elfenbein oder Perlmutt fertigten vorrangig die Drechsler. Gold- und Silberschmiede verarbeiteten die edlen Metalle Gold und Silber für ihre Knöpfe. Demgegenüber verwendeten Knopfmacher und Posamentierer zumeist Garn, Wolle, Seide oder Gold- und Silbergespinste für ihre Knöpfe. Die Innungen der Gürtler, Nadler, Knopfmacher, Posamentierer und Drechsler dominierten die Knopfherstellung in Sachsen bis ins 19. Jahrhundert. Angehörige dieser Innungen gründeten die ersten Manufakturen in der 2. Hälfte des 18. Jh. und richteten in der 1. Hälfte des 19. Jh. die ersten Knopffabriken ein. In der 2. Hälfte des 19. Jh. entwickelte sich die sächsische Knopfindustrie hinter der in Preußen zur zweitstärksten ihrer Art in Deutschland. Die Dissertation behandelt den Zeitraum von 1763 bis 1933 und berücksichtigt die jeweilige territoriale Ausdehnung Sachsens in der entsprechenden Zeit.
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Nodwell, Megan. "La réification du personnage féminin dans "La modification" de Butor /." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24098.
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This master's thesis deals with the reification, or transformation into objects, of the female characters in Michel Butor's La Modification. It is our contention that the two female characters, Henriette and Cecile, function not as characters, but as objects: they are unable to take up subject positions, and they have the same roles as the other inanimate objects in Butor's work. The critical analysis is based in part on existentialist, psychoanalytic, and poststructuralist theories of subjectivity, as well as feminist rereadings of these theories. We have also used several critical and theoretical works on the object in the "Nouveau Roman", in the novels of Michel Butor, and, specifically, in La Modification.The first chapter deals with the work of several feminist theoreticians, who claim that woman is objectified in patriarchal society because she has no access to subjectivity, be it through the means of action, of vision, or of language. In the second chapter we discuss critical writings on the treatment and role of the object in Butor's work, writings which claim that these objects have a specific role to contribute to the characterisation of the main character, and to allow this main character to take up a position as subject. In the third chapter we examine the link between these two critical fields. The female characters in La Modification are objectified because they are not able to assume subject positions, they have no access to subjectivity through action, vision, or language. In addition, the female characters have the same narrative role as the other objects in the novel.
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Zhang, Zhongkui. "Modeling of Al evaporation and Marangoni flow in Electron Beam Button Melting of Ti-6Al-4V." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/43996.
Full textAbstract:
The Electron Beam Cold Hearth Remelting (EBCHR) process has emerged as a key process in producing high quality Ti-6Al-4V ingot and electrode as it is able to effectively consolidate both sponge and scrap material while removing undesired impurities and inclusions, such as Low Density Inclusions (LDIs) and High Density Inclusions (HDIs). However, the challenge of composition control arises in processing alloys such as Ti-6Al-4V where evaporative loss of elements with higher vapor pressure (Al in this case) cannot be ignored. Therefore, in order to cast a product of specified composition, a thorough understanding of the evaporation mechanism and melt flow conditions becomes crucial in process control and optimization. This research presents a comprehensive model of the melt pool produced during Electron Beam Button Melting (EBBM) which has been developed to serve as an intermediate step in the development of a comprehensive tool for analysis and optimization of the industrial EBCHR process. With proper geometry and boundary conditions, the EBBM model can be readily applied to an industrial EBCHR furnace to minimize costly experiments in optimizing process parameters. A thermal-fluid-compositional model has been developed that includes Al evaporation, thermal and compositional buoyancy, thermal and compositional Marangoni flow and flow attenuation in the mushy regime. Experiments on Ti-6Al-4V and CP titanium with a circular electron beam pattern were conducted in a laboratory scale EBBM furnace in order to study the evaporation process and fluid flow in the liquid pool. The data obtained from the experimental work was used to tune the thermal boundary conditions and validate the model predictions. The temperature, surface velocity, pool profile and concentration profile have been experimentally quantified and used for validation of the mathematical model.
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Golisch, Kimberly Brooke. "The Benjamin Button Effect: Shifting Adults into an Infant-Like Mode to Improve Second-Language Learning." Thesis, The University of Arizona, 2014. http://hdl.handle.net/10150/320082.
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Mencini, Damian. "From Pulling the Trigger to Pushing the Button: Historical Precedents for Targeted Killings and Signature Strikes." Thesis, Boston College, 2014. http://hdl.handle.net/2345/bc-ir:103680.
Full textAbstract:
Thesis advisor: Charles GallagherThesis advisor: Peter Krause
Drone strikes are sensational events. The United States Government uses remotely piloted aircraft (or drones) equipped with precisions weapons systems to unilaterally hunt and kill its enemies across the globe. The American public, and many around the world, are startled by the pervasiveness of American lethal force. In many ways, drone strikes are unprecedented. The technology, the frequency of use, and the geographic scope are all by-products of the twenty-first century. However, the United States government has a deep history of debating whether to kill individual enemies, and has a history of authorizing operations to do so. Beneath the rhetoric, the arguments, and the opinions that dominate drone policy today there is something missing: the history. This thesis argues that there are historical precedents for targeted killings and signature strikes in American history that predate the September 11 terrorist attacks and examining these past operations can inform modern policy
Thesis (BA) — Boston College, 2014
Submitted to: Boston College. College of Arts and Sciences
Discipline: College Honors Program
Discipline: History