Dissertations / Theses: 'Technique and equipment'

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Stanley, Warren. "Realisation of an optical tomography system using an amplitude modulation technique." Thesis, University of Hertfordshire, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275154.

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Kim, Seongwon. "Built-in self-test technique for high-speed phase-locked loops /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/5957.

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Mortimer, Beth Ann 1965. "A scanning grating technique for measurement of submicron focused spots." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/291569.

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Many applications in optical research require the use of diffraction limited point images with reduced spot sizes. The instrumentation that evaluates these small diameter images must have high resolution (sub-micron) capabilities. One method used to measure sub-micron optical point images is a scanning grating technique. However, many characteristics of this measurement technique have not been fully examined. In this paper, the sensitivity of this measurement technique to the scanning mechanism, beam characteristics, and grating tilt is evaluated.

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Strand, Henrik. "Design, testing and analysis of journal bearings for construction equipment." Doctoral thesis, Stockholm : Department of Machine Design, Royal Institute of Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-429.

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Andreeva, Tatiana A. "Ultrasonic technique in determination of grid-generated turbulent flow characteristics." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-1010103-153049.

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Horta, Cristina Maria Ribeiro da Silva Ramos e. "Percursos da azulejaria de interior no concelho das Caldas da Rainha." Master's thesis, Instituições portuguesas -- UNL-Universidade Nova de Lisboa -- FCSH-Faculdade de Ciências Sociais e Humanas -- -Departamento de Antropologia, 1999. http://dited.bn.pt:80/29495.

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Damodara, Eswar Keran C. "Clinical trial to determine the accuracy of prefabricated trays for making alginate impressions." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2009r/damodara.pdf.

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Obiora, Obinna Chukwuemeka. "Wireless condition monitoring to reduce maintenance resources in the Escravos–Gas–To–Liquids plant, Nigeria / Obiora, O.C." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7040.

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The purpose of this research is to reduce maintenance resources and improve Escravos–Gas–to–Liquids plant availability (EGTL) in Escravos, Nigeria using wireless condition monitoring. Secondary to the above is to justify the use of this technology over other conventional condition monitoring methods in petrochemical plants with specific reference to cost, reliability and security of the system. Wireless and continuous condition monitoring provides the means to evaluate current conditions of equipment and detect abnormalities. It allows for corrective measures to be taken to prevent upcoming failures. Continuous monitoring and event recording provides information on the energized equipment's response to normal and emergency conditions. Wireless/remote monitoring helps to coordinate equipment specifications and ratings, determine the real limits of the monitored equipment and optimize facility operations. Bentley N, (2005). Using wireless techniques eliminate any need for special cables and wires with lower installation costs if compared to other types of condition monitoring systems. In addition to this, wireless condition monitoring works well under difficult conditions in strategically important locations. The Escravos gas–to–liquid plant in Nigeria, located in a remote and offshore area where accommodation and space for offices is a factor for monitoring plant conditions in every office, is a typical example. Wireless technology for condition monitoring of energized equipment is applicable to both standalone and remote systems. In the research work of Meyer and Brambley (2002), they characterized the current problem with regards to cost effectiveness and availability of wireless condition monitoring. Maintenance of rotating equipment provides probability estimates of the total impact of the problem, cost implication of plant equipment maintenance and describes a generic system in which these developing technologies are used to provide real–time wireless/remote condition monitoring for rotating main air compressor (MAC) units and their components as a case study. Costs with today’s technology are provided and future costs are estimated, showing that benefits will greatly exceed costs in many cases, particularly if low–cost wireless monitoring is used. With management trends such as “re–engineering” and “downsizing” of the available workforce, wireless condition–monitoring of critical machines has been given more importance as a way to ensure quality production with fewer personnel. Wireless condition–monitoring using inexpensive wireless communication technology frees up existing plant maintenance personnel work on machines that are signaling problems and focusing the maintenance efforts away from attempting to work on a large population of machines to only those machines requiring immediate attention. Lloyd and Buddy (200) suggested that Point–to–point wireless data transmission systems, an excellent example of recent technological advances in communication systems, are now practical and cost–effective for industrial use. While both complex infrastructures and complex protocols are required for cellular communications, non– cellular communication systems, such as the point–to–point wireless data transmission system example, require no elaborate infrastructure. Limited research was done on the immediate benefits of implementing wireless condition monitoring systems in plants. All papers on the subject have been drawn up by manufacturers of such equipment. This research will thus also deliver a "third–party" perspective on the effectiveness of such devices, justifying their impact on data gathering security, cost and reliability.
Thesis (M.Ing. (Development and Management Engineering))--North-West University, Potchefstroom Campus, 2012.

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Чітак, Владислав Віталійович. "Інструмент для розрізання волокнистих полімерних композиційних матеріалів." Master's thesis, Київ, 2018. https://ela.kpi.ua/handle/123456789/26723.

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Одним з pозповсюджених методів обpобки елементів із ПКМ є свеpдління отвоpів під установку кpіпильних елементів. Пpи свеpдлінні спостеpігаються похибки обpобки, зокpема, вспучування, pозшаpування матеpіалу, pозтpіскування між волокнами в шаpах ПКМ, відхилення фоpми отвоpів, пpипалення (внаслідок високої темпеpатуpи в зоні pізання). В pезультаті, свеpдління отвоpів вимагає пpинципово нових технологічних pішень. Тому механізм впливу технологічних паpаметpів на силові хаpактеpистики пpоцесу і якість повеpхні деталей з КМ пpедставляє значний інтеpес як для науки, так і для виpобництва. В данній роботі проводилося дослідження вплив у геометричних параметрів інструменту на силові характеристики. Дослідження силових залежностей пpоводилося з метою визначення впливу pізних геометpичних паpаметpів свеpдел на осьове зусилля і кpутний момент, тому що по ним можна судити пpо пpацездатність свеpдел і «пpогнозувати » стійкість.
One of the most widespread methods of processing PC materials is drilling perforations for attaching fasteners. During drilling some processing faults, such as heaves, material exfolitation, cracking in between layers of PC material, form-factor deviation and cauterization are observed. Considering points stated above, drilling requires fundamentally new technological decisions. This is why the principle of technical parameters influence on power-characteristics of the process and quality of the surface areas of PC material components is particularly important both for science and production. This work is a result of research in field of influence of geometric parameters of the instrument on power-characteristics. Research of power relations was conducted to achieve a goal of determining the influence of different geometric parameters of borers on both axial force and torque. Because of these parameters one can judge the working capacity of borers and “predict” the fortitude.

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Drumond, Gisele Russo Canato. "Avaliação de exposição ocupacional em radiologia digital veterinária portátil." Universidade Tecnológica Federal do Paraná, 2012. http://repositorio.utfpr.edu.br/jspui/handle/1/447.

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Este trabalho avalia a distribuição de dose recebida por trabalhadores envolvidos nos procedimentos de radiologia veterinária portátil digital e verifica a redução da dose obtida com a utilização de equipamentos de proteção individual. Para esta avaliação foram feitas medições utilizando dosímetros termoluminescentes tipo TLD-100, posicionados em sete diferentes pontos do corpo dos assistentes: mãos, tórax (por fora do avental), tireoide (por dentro do avental), cantos dos olhos esquerdo e direito e centro dos olhos e em cinco pontos diferente no médico veterinário: tórax (por fora do avental), tireoide (por dentro do avental), cantos dos olhos esquerdo e direito e centro dos olhos. As doses ocupacionais foram avaliadas em 63 procedimentos radiográficos de cães realizados com 49 assistentes e um médico veterinário na região metropolitana de Curitiba, PR. Os resultados mostram a importância do uso do protetor de tireoide e avental de chumbo para a redução da dose recebida pelos profissionais. As doses dos assistentes que seguraram os animais foram mais altas na região das mãos. Este estudo mostra a necessidade de medidas adicionais de proteção e a implementação de mecanismos de treinamento em proteção radiológica para os médicos e assistentes que trabalham com radiologia portátil digital.
This study evaluates the distribution of the dose received by work-people involved in portable digital veterinary radiology procedures and checks the dose reduction obtained with the use of individual protection equipments. For this evaluation measurements were made using TLD-100 thermoluminescent dosimeters,positioned at seven different spots on the body of the assistants: hands, chest (outside the apron), thyroid (inside the apron), left and right eye corners and at the forehead, and in five different spots in the veterinarian: chest (outside the apron), thyroid (inside the apron), left and right eye corners and the center of the eyes. The dosage was evaluated through the 63 procedures performed with 49 assistants and a veterinarian in the metropolitan region of Curitiba, PR. The results show the importance of using thyroid protection and lead aprons to reduce the dosage received by the veterinarian and assistants. The dosages of the assistants who held the animals were higher in the areas of the hands. This study shows the need for additional protective measurements and the implementation of training mechanisms in radiation protection for physicians and assistants who work with portable digital radiology.

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Tercan, Erdem. "Managed Pressure Drilling Techniques, Equipment &amp." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611824/index.pdf.

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In the most of the drilling operations it is obvious that a considerable amount of money is spent for drilling related problems
including stuck pipe, lost circulation, and excessive mud cost. In order to decrease the percentage of non-productive time (NPT) caused by these kind of problems, the aim is to control annular frictional pressure losses especially in the fields where pore pressure and fracture pressure gradient is too close which is called narrow drilling window. If we can solve these problems, the budget spent for drilling the wells will fall, therefore enabling the industry to be able to drill wells that were previously uneconomical. Managed Pressure Drilling (MPD) is a new technology that allows us to overcome these kinds of drilling problems by controlling the annular frictional pressure losses. As the industry remains relatively unaware of the full spectrum of benefits, this thesis involves the techniques used in Managed Pressure Drilling with an emphasis upon revealing several of its lesser known and therefore less appreciated applications.

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Velez, Emil K. "Communications-equipment distribution planning using search techniques." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/25743.

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Erwin, James William. "Rooftop equipment wind load and mitigation techniques." FIU Digital Commons, 2008. http://digitalcommons.fiu.edu/etd/3149.

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Rooftop equipment failures pose significant threats during tropical cyclones because detached equipment may hinder post-storm recovery efforts, delay building re occupancy, and become windbore debris. The objectives of this study were to measure the wind loads exerted on a full scale rooftop equipment specimen, and to develop mitigation techniques that would alleviate severe rooftop equipment wind loads. A test building was outfitted with a/c condenser units, which were instrumented with force and pressure transducers to measure the aerodynamic loading effects. The study found that lateral forces measured in the full scale configuration compared well with a previous tunnel study, but differences existed between the uplift forces and overturning moments. Additionally, a full scale gust effect factor was found to be significantly higher than the wind tunnel results and the nominal value used in ASCE 7. Wind screens placed around the rooftop equipment were found to effectively alleviate the aerodynamic loading effects.

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Levchenko, K. "Different techniques of diagnostics for rotating equipment." Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/26015.

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Oesterle, Jonathan. "Holistic approach to designing hybrid assembly lines A comparative study of Multi-Objective Algorithms for the Assembly Line Balancing and Equipment Selection Problem under consideration of Product Design Alternatives Evaluation of the influence of dominance rules for the assembly line design problem under consideration of product design alternatives Hybrid Multi-objective Optimization Method for Solving Simultaneously the line Balancing, Equipment and Buffer Sizing Problems for Hybrid Assembly Systems Comparison of Multiobjective Algorithms for the Assembly Line Balancing Design Problem Efficient multi-objective optimization method for the mixed-model-line assembly line design problem Detaillierungsgrad von Simulationsmodellen Rechnergestützte Austaktung einer Mixed-Model Line. Der Weg zur optimalen Austaktung." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0012.

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Le travail présenté dans cette thèse concerne la formulation et la résolution de deux problèmes d'optimisation multi-objectifs. Ces problèmes de décision, liés à une approche holistique, ont pour but de sélectionner la meilleure configuration « produit/ligne d’assemblage » à partir d'un ensemble de design produits, et de ressources. Concernant le premier problème, un modèle de coût a été développé afin de traduire les interdépendances complexes entre la sélection d’un design produit et les caractéristiques des ressources. Une étude empirique est proposée et vise à comparer, selon plusieurs indicateurs de qualité multi-objectifs, différentes méthodes de résolution - comprenant des algorithmes génétiques, de colonies de fourmis, d’optimisation par essaims particulaires, des chauves-souris, de recherche du coucou et de pollinisation des fleurs. Plusieurs règles de dominance et une recherche locale spécifique au problème ont été appliquées aux méthodes de résolution les plus prometteuses. Concernant le second problème, qui se penche également sur le dimensionnement des stocks tampons, les méthodes de résolution sont à un modèle de simulation à événements discrets, dont la fonction première est l’évaluation des valeurs des différentes fonctions objectives. L’approche holistique associée aux deux problèmes a été validée avec deux cas industriels
The work presented in this thesis concerns the formulation and the resolution of two holistic multi-objective optimization problems associated with the selection of the best product and hybrid assembly line configuration out of a set of products, processes and resources alternatives. Regarding the first problem, a cost model was developed in order to translate the complex interdependencies between the selection of specific product designs, processes and resources characteristics. An empirical study is proposed, which aimed at comparing, according to several multi-objective quality indicators, various resolution methods – including variants of evolutionary algorithms, ant colony optimization, particle swarm optimization, bat algorithms, cuckoo search algorithms, and flower-pollination algorithms. Several dominance rules and a problem-specific local search were applied to the most promising resolution methods. Regarding the second problem, which also considers the buffer sizing, the developed algorithms were enhanced with a genetic discrete-event simulation model, whose primary function is to evaluate the value of the various objective functions. The demonstration of the associated resolution frameworks for both problems was validated through two industrial-cases

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Constantinidis, Alex Stylianos. "Improving techniques for the detection of circumscribed masses in digital mammograms." Thesis, University of Kent, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344104.

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Miles, Connie E., and Deirdre Townes. "Improving product performance through new equipment training (NET) techniques." Monterey, California. Naval Postgraduate School, 2008. http://hdl.handle.net/10945/10314.

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Joint Applied Project
The U.S. Military develops and fields infantry clothing and equipment (ICE) to protect ground warfighters against myriad environmental and man-made battlefield threats. ICE also augments physical activities to overcome identified battlefield deficiencies that will increase survivability, lethality, mobility and sustainability to improve combat effectiveness. More often than not, the maximum performance capabilities engineered into newly fielded ICE are not fully utilized to benefit the military user. We examine the ICE training problem for the United States Marine Corps (USMC) to identify practical and strategic changes in instruction, process, and procedures to help the Marine realize the full performance potential of new ICE issued to him/her. The improved ICE training strategy recommends implementing six corrective actions, which collectively increase Marines' ability to notice ICE training, improve their ability to understand its training message, and reinforce newly gained ICE knowledge to habitually use ICE correctly. The training approach principles should be applicable to the United States Army whose Soldiers similarly experience under utilized capabilities from their combat clothing and equipment.

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Miles, Connie E. Townes Deirdre. "Improving product performance through new equipment training (NET) techniques." Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/JAP/2008/Dec/08Dec%5FNAME%5FMiles.pdf.

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"Submitted in partial fulfillment of the requirements for the degree of Master of Science in Program Management from the Naval Postgraduate School, December 2008."
Advisor(s): Suchan, James and Simon, Cary. "December 2008." "Joint applied project"--Cover. Description based on title screen as viewed on January 28, 2009. Includes bibliographical references (p. 135-137). Also available in print.

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Arslanian, A. S. "Spectral techniques for signal detection." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372465.

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Turnbull, Luke. "Radiated emission measurement transfer techniques." Thesis, University of York, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313636.

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Aboelnor, Mootaz E. "Advanced numerical techniques to simulate soil-tool interface problems." Thesis, University of Strathclyde, 2002. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=20353.

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In most mine clearing or earth moving equipment such as bulldozers, the working tool is a blade. The blade geometry and operating conditions, such as cutting speed, cutting angle, and cutting depth, have a great effect on overall machine productivity. Most of the published experimental studies confirm these effects. However experimental studies are expensive and their results are highly dependant on the accuracy of measurement devices and the reliability of experimental procedures employed. Numerical techniques have recently shown more promise especially with the current increase in computational power and development of more sophisticated material models. However in order to simulate the soil-tool interface process accurately, careful selection of the appropriate material model for the soil and the interface is required. This should, ideally, be based on a reasonable number of material parameters that have direct physical meaning. In this study a review of the available constitu tive models for soil (particularly sand) and soil-tool interface was carried out. This review study concluded by selecting the so called hypoplastic model as the most appropriate to simulate the sandy soil behavior over a wide range of stresses. Some modifications were carried out on this selected hypoplastic model to optimize it for simulation of the soil-tool interaction process, which is characterized by monotonic loading and high deformation. The modified model was verified numerically and then implemented into the finite element method via an ABAQUS user defined subroutine UMAT. Then the implemented model was verified through analysis of some benchmark problems and results were compared with results from different classical failure criteria. The finite element analysis revealed the high performance of the hypoplastic model in simulating sand behaviour. Finally an analysis of various factors affecting soil-tool interaction was carried out in both two-dimensions and three-dimensions. Results revealed the significant effect of both geometry and operating conditions on blade cutting forces and confirmed the ability of the finite element method to analyze the soil-tool interaction process.

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Maddali, Hanuma Teja. "Inferring social structure and dominance relationships between rhesus macaques using RFID tracking data." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51866.

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This research address the problem of inferring, through Radio-Frequency Identification (RFID) tracking data, the graph structures underlying social interactions in a group of rhesus macaques (a species of monkey). These social interactions are considered as independent affiliative and dominative components and are characterized by a variety of visual and auditory displays and gestures. Social structure in a group is an important indicator of its members’ relative level of access to resources and has interesting implications for an individual’s health. Automatic inference of the social structure in an animal group enables a number of important capabilities, including: 1. A verifiable measure of how the social structure is affected by an intervention such as a change in the environment, or the introduction of another animal, and 2. A potentially significant reduction in person hours normally used for assessing these changes. The behaviors of interest in the context of this research are those definable using the macaques’ spatial (x,y,z) position and motion inside an enclosure. Periods of time spent in close proximity with other group members are considered to be events of passive interaction and are used in the calculation of an Affiliation Matrix. This represents the strength of undirected interaction or tie-strength between individual animals. Dominance is a directed relation that is quantified using a heuristic for the detection of withdrawal and displacement behaviors. The results of an analysis based on these approaches for a group of 6 male monkeys that were tracked over a period of 60 days at the Yerkes Primate Research Center are presented in this Thesis.

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Trepess, David Harry. "Development of shock testing techniques for industrial application." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316460.

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Mejani, Farida. "Analyse micro-didactique du processus d'étude et de recherche du point de vue mésogénétique au sein d'un travail de groupe dans le cadre des moments d'exploration du type de tâches et d'élaboration d'une technique sur les équations du premier degré." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0685/document.

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La thèse étudie l'évolution sous contraintes du milieu que se donnent les élèves dans les cadres des premiers moments d'une activité d'étude et de recherche sur les équations du premier degré à une inconnue en classe de 4°. Le dispositif d'observation - analyses mathématique et didactique a priori soutenant la proposition d'activité, mise en place de groupes au sein des classes, films des interactions au sein du processus de recherche - recourt à une méthodologie de type clinique. Elle autorise une analyse micro-didactique qui, utilisant les récents développements de la théorie Anthropologique du didactique, conclut à la différenciation des milieux, des temporalités et des fonctions au sein des groupes observés et un enrichissement du concept de mémoire didactique
The thesis studies the evolution under constraints of the milieu that pupils give themselves in the frames of the first moments of an activity of study and research on single-unknown equations of the first degree in class of 4 °.The observation device - a priori mathematical and didactical analyzes supporting the activity proposal, setting up groups within the classes, films of the interactions within the research process - resorts to a methodology of the clinical type. It allows a micro-didactic analysis which, using the most recent developments of the anthropological theory of didactics, concludes with the differentiation of the environments, the temporalities and the functions within the groups observed and an enrichment of the concept of didactic memory

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Abboud, Jacob Bishara. "Heat transfer investigation of microelectronic equipment using finite element modelling techniques." Thesis, University of Bath, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295535.

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Poole, Michael Stephen. "Improved equipment and techniques for dynamic shimming in high field MRI." Thesis, University of Nottingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445686.

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Tarantilis, Georgios E. "Simulating clouds with procedural texturing techniques using the GPU." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Sep%5FTarantilis.pdf.

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Thesis (M.S. in Modeling, Virtual Environments and Simulations (MOVES))--Naval Postgraduate School, Sept. 2004.
Thesis Advisor(s): Rudy Darken, Joe Sullivan. Includes bibliographical references (p. 53). Also available online.

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Jackson, Timothy John. "Multiple track performance of a digital magnetic tape system : experimental study and simulation using parallel processing techniques." Thesis, University of Plymouth, 1991. http://hdl.handle.net/10026.1/2787.

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The primary aim of the magnetic recording industry is to increase storage capacities and transfer rates whilst maintaining or reducing costs. In multiple-track tape systems, as recorded track dimensions decrease, higher precision tape transport mechanisms and dedicated coding circuitry are required. This leads to increased manufacturing costs and a loss of flexibility. This thesis reports on the performance of a low precision low-cost multiple-track tape transport system. Software based techniques to study system performance, and to compensate for the mechanical deficiencies of this system were developed using occam and the transputer. The inherent parallelism of the multiple-track format was exploited by integrating a transputer into the recording channel to perform the signal processing tasks. An innovative model of the recording channel, written exclusively in occam, was developed. The effect of parameters, such as data rate, track dimensions and head misregistration on system performance was determined from the detailed error profile produced. This model may be run on a network of transputers, allowing its speed of execution to be scaled to suit the investigation. These features, combined with its modular flexibility makes it a powerful tool that may be applied to other multiple-track systems, such as digital HDTV. A greater understanding of the effects of mechanical deficiencies on the performance of multiple-track systems was gained from this study. This led to the development of a software based compensation scheme to reduce the effects of Lateral Head Displacement and allow low-cost tape transport mechanisms to be used with narrow, closely spaced tracks, facilitating higher packing densities. The experimental and simulated investigation of system performance, the development of the model and compensation scheme using parallel processing techniques has led to the publication of a paper and two further publications are expected.

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Nilsson, Erik, and Johan Björmsjö. "Konceptstudie av en medicinteknisk detalj. : Conceptual study of a medicinal equipment detail." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-27415.

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Examensarbetet har bedrivits vid Tekniska Högskolan i Jönköping och i samarbete med fallföretaget Solutions for Tomorrow AB. Arbetet har utformats efter ett syfte; att utveckla ett produktkoncept där alternativa material och tillverkningsmetoder leder till kostnadsbesparingar. Syftet har sedan brutits ned till fyra frågeställningar som arbetet kretsar kring. Två frågeställningar behandlar redan framtagna koncept och två rör ekonomiska aspekter för nya projekt. För att besvara frågeställningarna är arbetet utformat som en konceptstudie där hela utvecklingsprocessen har genomförts. Studien är framför allt baserad på en kvalitativ metod där fokus har legat på intervjuer och textanalyser. En deduktiv ansats har använts då kända teorier och modeller har tillämpats vid antagande av slutsatsen. Studien har resulterat i två produktkoncept som beräknas sänka produktionskostnaderna för den analyserade komponenten. En mer kostnadseffektiv tillverkningsmetod kan innebära att nya leverantörer kan komma att kontaktas och nytt ritningsunderlag måste framställas. I framtiden bör en mer omfattande konstruktionsanalys av komponenten genomföras, då nya material och tillverkningsmetoder erbjuder nya möjligheter till kostnadseffektivisering. De kostnadsberäkningar som görs i rapporten utgår i många fall från den tillverkningsmetod som används och tiden det tar att utföra olika steg i processen. Delar av produktionen ligger idag i Tyskland och ingen möjlighet gavs att bevittna processen. De kostnader som är relaterade till arbetstiden är därför uppskattade. Kostnadskalkyleringarna för koncepten beräknas ha en viss felmarginal och bör inte användas vid beslutstagande.
This thesis project has been conducted at the School of Engineering at Jönköping University and in cooperation with the case company Solutions for Tomorrow AB. The project was modeled around a purpose; to develop a product concept where alternative materials and manufacturing techniques will lead to cost savings. The purpose was broken down into four questions around which the project is focused. Two of the questions are about the produced concepts and two of them are about the economic aspect of the new concepts. To answer the questions the thesis project is designed as a conceptual study where the whole development process has been carried out. The study is mostly based on a qualitative method where focus has been on collecting data from interviews and related literature. A deductive approach was used since known theories and models has been applied when assuming the conclusions. The study has resulted in two product concepts that according to the calculations will lower the production related costs. A more cost efficient manufacturing method implicates that new suppliers might be needed and new production drawings needs to be fabricated. A more extensive constructional analysis should be conducted in the future since new materials and manufacturing methods offers new possibilities to further cost potentiation. The cost calculations that are performed in this report are in many cases based on the manufacturing methods used today and the time it takes to perform the steps in the production. Parts of the present production are located in Germany and no opportunity was given to witness the process. The costs related to the manufacturing time are therefore estimates. Hence the cost calculations are expected to have a certain error margin and should not be used in decision making.

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Muriti, Andrew John Safety Science Faculty of Science UNSW. "A biomechanical analysis of patient handling techniques and equipment in a remote setting." Awarded by:University of New South Wales. Safety Science, 2005. http://handle.unsw.edu.au/1959.4/22002.

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Remote area staff performing manual patient handling tasks in the absence of patient lifting hoists available in most health care settings are at an elevated risk of musculoskeletal injuries. The objective of this project was to identify the patient handling methods that have the lowest risk of injury. The patient handling task of lifting a patient from floor to a chair or wheelchair is a common task performed in a remote health care setting. The task was performed utilising three methods, these being: (1) heads/tails lift, (2) use of two Blue MEDesign?? slings and (3) use of a drawsheet. The task of the heads/tails lift was broken down into two distinctly separate subtasks: lifting from the (1) head and (2) tail ends of the patient load. These techniques were selected based on criteria including current practice, durability, portability, accessibility, ease of storage and cost to supply. Postural data were obtained using a Vicon 370 three - dimensional motion measurement and analysis system in the Biomechanics & Gait laboratory at the University of New South Wales. Forty reflective markers were placed on the subject to obtain the following joint angles: ankle, knee, hip, torso, shoulder, elbow, and wrist. The raw data were converted into the respective joint angles (Y, X, Z) for further analysis. The postural data was analysed using the University of Michigan???s Three-Dimensional Static Strength Prediction Program (3D SSPP) and the relative risk of injury was based on the following three values: (1) a threshold value of 3,400 N for compression force, (2) a threshold value of 500 N for shear force, and (3) population strength capability data. The effects on changes to the anthropometric data was estimated and analysed using the in-built anthropometric data contained within the 3D SSPP program for 6 separate lifter scenarios, these being male and female 5th, 50th and 95th percentiles. Changes to the patient load were estimated and analysed using the same computer software. Estimated compressive and shear forces were found to be lower with the drawsheet and tail component of the heads/tails lift in comparison to the use of the Blue MEDesign?? straps and head component of the heads/tails lift. The results obtained for the strength capability aspect of each of the lifts indicated a higher percentage of the population capable of both the drawsheet and tail end of the heads/tails lift. The relative risk of back injury for the lifters is distributed more evenly with the drawsheet lift as opposed to the heads/tails (tail) lift where risk is disproportionate with the heavier end being lifted. The use of lifter anthropometrics does not appear to be a realistic variable to base assumptions on which group of the population are capable of safely performing this task in a remote setting. This study advocates the use of the drawsheet lift in a remote setting based on the author???s experience and the biomechanical results obtained in this study. The drawsheet lift is both more accessible and provides a more acceptable risk when more than two patient handlers are involved, in comparison to the other lifts utilised lifting patients from floor to a chair.

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Chavez, Jose Luis Fierro. "Diagnostic techniques of electrical failures in organic insulators installed in the field." Thesis, University of Salford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306080.

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Ward, Jonathan. "Application of biomechanical techniques to improved design of products and environments for an ageing population." Thesis, Open University, 1999. http://oro.open.ac.uk/58008/.

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This work describes the development of a technique for the evaluation of the performance of a product's physical user interface. The technique is intended to combine the best features cat conventional user group testing with those of computer based biomechanical modelling. A requirement for the new technique exists as social pressure demands that consumer products he optimised for users with a wide range of physical capabilities, while shortening product lifecycles leave less time for extensive user evaluation programmes. A demonstration system was developed, based upon the use of an electromagnetic tracking system to gather upper limb motion data and a two segment, rigid link biomechanical model. Experimental work was carried out to test the effectiveness of the system at following limb movements and average error in reconstruction of hand position from segment angle data was 62mm (Standard deviation 41 mm) The modelling system was applied to the assessment of two types of product: cutlery and drinking vessels and the effectiveness of various statistical techniques in allowing the rapid identification of important design parameters was assessed. The use of Taguchi's smaller-the-better signal to noise ratio was found to be effective for the measurement of the effect of product design on shoulder and elbow forces. Cutlery with enlarged handles designed to reduce grip strength requirements tended to increase forces at the shoulder. The method was also applied to an interface optimisation problem involving the design of a lever mechanism. Partial factorial design was used to minimise experimental cost during the assessment of multiple factors, but strong interactions were detected between interface parameters, reducing the value of the analysis. The overall height of the lever handle relative to the user's shoulder was found to be the most significant design factor, with an optimum operating situation existing where the lever was low enough to require almost full extension of the elbow during use. The work concludes that biomechanical analysis holds further promise for the optimisation of interface parameters, provided the high experimental cost involved with present techniques can be reduced.

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Price, Alfred W. "The evolution of electronic warfare equipment and techniques in the USA, 1901 to 1945." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/7410.

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This work describes the evolution cf electronic warfare equipment and techniques in the USA, from the first instance of radio jamming in that country in 1901 until the end of World War II in 1945. It begins with a review of early work on telegraph, radio and radar systems throughout the world, and countermeasures used during trials or in combat prior to World War II. Immediately after the USA ertered the conflict in 1941, the Radio Research Laboratory was set up near Boston to develop radio countermeasures equipment for the US armed forces. The organisation rapidly outgrew the capacity of a angle laboratory and in October 1942 Division 15 of the National Defense Research Committee was formed, to co-ordinate US work on countermeasures. The activities of RRL and Division 15 are described in detail, using cortemporary records and accounts from participants. Radar jammers developed by Divison 15 were first used in action in July 1943 during the invason of Sicily, and went on to play important roles in support amphibious landings and strategic bombing operations in the European and Pacific theatres of operations. The jamming devices and tactics employed, the enemy attempts to develop counter-countermeasures and the US moves to counter these counters are all described in detail. Conclusions are drawn on the effectiveness of the various types of jamming, based on post-war interrogation of German and Japanese serving officers and technical personnel. Appendices give technical details of the countermeasures devices produced in the USA during World War II, and the development of radar and radar countermeasures in Germany and Japan.

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Corden, Thomas Joseph. "Development of design and manufacturing techniques for glass reinforced plastic waste water treatment equipment." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339665.

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Van, Geems Barbara Anne. "The development of a simple stereotactic device for neurosurgical applications." Thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/26285.

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Chen, Xi. "Using data mining techniques to discover customer behavioral patterns for direct marketing in mobile telecommunication industry." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40987942.

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Stephan, André. "Towards a comprehensive energy assessment of residential buildings: a multi-scale life cycle energy analysis framework." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209465.

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Buildings are directly responsible for 40% of the final energy use in most developed economies and for much more if indirect requirements are considered. This results in huge impacts which affect the environmental balance of our planet.

However, most current building energy assessments focus solely on operational energy overlooking other energy uses such as embodied and transport energy. Embodied energy comprises the energy requirements for building materials production, construction and replacement. Transport energy represents the amount of energy required for the mobility of building users.

Decisions based on partial assessments might result in an increased energy demand during other life cycle stages or at different scales of the built environment. Recent studies have shown that embodied and transport energy demands often account for more than half of the total lifecycle energy demand of residential buildings. Current assessment tools and policies therefore overlook more than 50% of the life cycle energy use.

This thesis presents a comprehensive life cycle energy analysis framework for residential buildings. This framework takes into account energy requirements at the building scale, i.e. the embodied and operational energy demands, and at the city scale, i.e. the embodied energy of nearby infrastructures and the transport energy of its users. This framework is implemented through the development, verification and validation of an advanced software tool which allows the rapid analysis of the life cycle energy demand of residential buildings and districts. Two case studies, located in Brussels, Belgium and Melbourne, Australia, are used to investigate the potential of the developed framework.

Results show that each of the embodied, operational and transport energy requirements represent a significant share of the total energy requirements and associated greenhouse gas emissions of a residential building, over its useful life. The use of the developed tool will allow building designers, town planners and policy makers to reduce the energy demand and greenhouse gas emissions of residential buildings by selecting measures that result in overall savings. This will ultimately contribute to reducing the environmental impact of the built environment.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished

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O'Shea, John Christopher. "Innovative developments in scanning electrode techniques for corrosion monitoring and coating performance evaluation." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344139.

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Huang, Yiteng (Arden). "Real-time acoustic source localization with passive microphone arrays." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/15024.

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40

Bergström, Dan. "Techniques and systems for boom-corridor thinning in young dense forests." Umeå : Dept. of Forest Resource Management, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200987.pdf.

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Chen, Xi, and 陳熹. "Using data mining techniques to discover customer behavioral patterns for direct marketing in mobile telecommunication industry." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40987942.

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Hopkins, Douglas Charles. "Development of a high-density, off-line, quasi-resonant converter using hybrid techniques." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54385.

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The advancement of Very Large Scale Integration (VLSI) technology has reduced the size and increased the speed of information processing circuits. Consequently, power supplies for such circuits have had to meet increasing demands for power, yet simultaneously decrease in size. This need for higher power density in the supplies can be met with higher circuit operating frequencies and by using high-density circuit fabrication techniques. Generally, when the conversion frequency of conventional Pulse-Width-Modulated (PWM) supplies approaches 1 MHz, the switching loss becomes very large. This sharply reduces the efficiency of the supply. A quasi-resonant topology reduces much of this loss. For a Zero-Current-Switched (ZCS) Quasi-Resonant Converter (QRC) the turn-off loss is nearly eliminated. It was the objective of the research reported here to combine the quasi-resonant technology with thick-film hybrid microelectronics technology to produce a high density dc-dc converter. For this research endeavor an off-line, half-bridge ZCS-QRC was used. The circuit processed 300V and up to 20A with switching frequencies in the 1MHz to 2MHz range. The voltage and current levels exemplify the high electric field and current densities that must be considered in the design of most QRC circuits that process power up to 100W. Only available materials for thick-film hybrid processing were used although some characteristics were modified. No special magnetic or capacitive components, or semiconductors were developed. To combine technologies the following were performed: 1. identification of critical power electronic circuit and hybrid component parameters such as maximum voltages and currents, thermal and electrical component impedances; 2. assessment of thick-film hybrid microelectronic materials and their compatibility in circuits having high voltage and current levels; 3. development of a complete thick-film power hybrid process; and 4. design, fabrication and evaluation of a power hybrid QRC that has high power-processing density.
Ph. D.

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43

Brown, Keith Edgar. "The application of knowledge-based techniques to fault diagnosis of 16 QAM digital microwave radio equipment." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/12958.

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44

Mei, Xinxin. "Energy conservation techniques for GPU computing." HKBU Institutional Repository, 2016. https://repository.hkbu.edu.hk/etd_oa/298.

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The emerging general purpose graphics processing units (GPGPU) computing has tremendously speeded up a great variety of commercial and scientific applications. The GPUs have become prevalent accelerators in current high performance clusters. Though the computational capacity per Watt of the GPUs is much higher than that of the CPUs, the hybrid GPU clusters still consume enormous power. To conserve energy on this kind of clusters is of critical significance. In this thesis, we seek energy conservative computing on the GPU accelerated servers. We introduce our studies as follows. First, we dissect the GPU memory hierarchy due to the fact that most of the GPU applications are suffering from the GPU memory bottleneck. We find that the conventional CPU cache models cannot be applied on the modern GPU caches, and the microbenchmarks to study the conventional CPU cache become invalid for the GPU. We propose the GPU-specified microbenchmarks to examine the GPU memory structures and properties. Our benchmark results verify that the design goal of the GPU has transformed from pure computation performance to better energy efficiency. Second, we investigate the impact of dynamic voltage and frequency scaling (DVFS), a successful energy management technique for CPUs, on the GPU platforms. Our experimental results suggest that GPU DVFS is still promising in conserving energy, but the patterns to save energy strongly differ from those of the CPU. Besides, the effect of GPU DVFS depends on the individual application characteristics. Third, we derive the GPU DVFS power and performance models from our experimental results, based on which we find the optimal GPU voltage and frequency setting to minimize the energy consumption of a single GPU task. We then study the problem of scheduling multiple tasks on a hybrid CPU-GPU cluster to minimize the total energy consumption by GPU DVFS. We design an effective offline scheduling algorithm which can reduce the energy consumption significantly. At last, we combine the GPU DVFS and dynamic resource sleep (DRS), another energy management technique, to further conserve the energy, for the online task scheduling on hybrid clusters. Though the idle energy consumption increases significantly compared to the offline problem, our online scheduling algorithm still achieves more than 30% of energy conservation with appropriate runtime GPU DVFS readjustments.

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Wicks, Stuart. "Exploratory study of lean techniques in support of defence equipment in the United Kingdom Ministry of Defence." Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500911.

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In 1999, the UK MoD launched a Lean Support programme aimed at reducing the cost of inservice support for defence equipment by applying the same Lean techniques used in industry. Such techniques typically depend on a value focus, level scheduling and accurate forecasting of demand, and are often associated with large volume production. However, in defence equipment support, volumes are small, demand is uncertain and the definition of value is problematic. Issues of secrecy and access make research in this area difficult, but subject at first hand. This study investigated the potential and the problems of applying Lean Techniques in the context of support for defence equipment. It explores methods for applying Lean Principles in this sector and the extent to which the MoD has been successful.

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Torrijos, Michel. "Evaluation des techniques non conventionnelles d'intensification des transferts d'oxygene en fermentation." Toulouse, INSA, 1987. http://www.theses.fr/1987ISAT0020.

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Etude dans le cas particulier de la production de 2,3-butanediol par enterobacter aerogenes. Amelioration du transfert de l'oxygene realisee grace a l'utilisation d'hydroinjecteurs ou de substances capables de vehiculer l'oxygene (n-paraffines et derives fluores)

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47

Bibby, Lee. "Improving design management techniques in construction." Thesis, Loughborough University, 2003. https://dspace.lboro.ac.uk/2134/793.

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Recent years has seen a significant drive away from traditional procurement routes with contractors finding themselves with an increasing responsibility for control of design - a process they have had little experience in managing. They now have to adapt accordingly. The learning curve is steep, not least because many projects must now be delivered fast track while co-ordinating increasingly complex fabric and content of buildings without a platform of accepted good practice to manage the design process. This is a major factor preventing the UK construction industry from delivering projects on time, to budget and to the specified quality. There is a need to educate an increasing number of people in design management techniques to equip them to manage today's fast moving and demanding projects. However, many current design management tools are insufficiently developed for industry application. Therefore, to improve design management in the industry, current techniques must be modified to align them with the needs of the modern design manager. This research has developed and tested a training initiative aimed at improving design management practice within a major UK Design and Construct Contractor. It comprises a Design Management Handbook, Design Management Training, Team Support and Project Monitoring. The Design Management Handbook is the core of the training initiative. It addresses critical aspects of design management practice and provides design management tools. Training provides guidance to project teams on the tools and practices. In Team Support project teams are supported in the implementation of the new practices and tools to help embed new ways of working in company practice. Project Monitoring establishes the impact of the new practices on project performance to demonstrate that they are working and thus reinforce change. To establish the training initiative's effectiveness and key findings, the impact of the initiative on design management performance has been explored. The research has established which practices and tools were used, which were not, as well as an understanding the applicability and performance of each Handbook practice and tool. From this, barriers to implementing new design management tools in industry were identified and strategies developed in order to overcome such barriers.

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Rife, Furnell. "Strategies Used by Hospitals in a Southeastern State to Reduce Catheter Associated Urinary Tract Infections: Comparing the Outcomes by Hospital Structure and Processes." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1490.

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Catheter-Associated Urinary Tract Infections are considered a clinical indicator of quality of care. A descriptive research study was conducted to identify the strategies used by hospitals to reduce or eliminate CAUTIs. Infection Control Preventionists were surveyed. In a predominately rural southeastern state, this study demonstrated that about 40% of hospitals surveyed are implementing CAUTI prevention processes.

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49

Yocky, David Alan. "Characterization and evaluation of a photostimulable phosphor x ray imaging system." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184529.

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This dissertation presents the characterization and evaluation of a new radiological imaging modality, Toshiba Computed Radiography (TCR) 201. The characteristics of the TCR storage phosphor imaging plates such as energy-dependent x-ray quantum efficiency, stored signal decay, low exposure rate signal build-up, and spontaneous and stimulated gain measures are presented. The TCR 201 system is characterized by the signal transfer curve, the total root-mean-squared (rms) output noise, the signal-to-noise ratio, the modulation transfer function (MTF), its noise power spectrum (NPS), and the detective quantum efficiency (DQE). The system rms noise is photon-limited for exposures less than 1.0 mR, but has contributions from phosphor structure and quantization noise for exposures higher than 1.0 mR. The phosphor's information factor is shown to explain deviations from ideal photon-limited noise for exposures of less than 1.0 mR. The MTF of the system is measured for standard imaging plates, 10% at 2.8 lp/mm, and for high resolution imaging plates, 10% at 4.4 lp/mm. An expression for the NPS is statistically derived, and experimental measurements confirm the expression and show an increase in uncorrelated noise power above 1.0 mR which is consistent with rms measurements. Expressions for the DQE are presented. A psychophysical study is performed to directly compare the TCR to film/screen combinations in imaging low-contrast objects. The results of this study show the TCR provides better images for detectability as a function of exposure. Also, the use of the TCR 201 as a two dimensional dosimeter and in single-shot dual energy subtraction is presented.

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Hawkins, Rodney J. "EPICARDIAL WIRELESS PACEMAKER FOR IMPROVED LEFT VENTRICULAR RESYNCHRONIZATION (CONCEPTUAL DESIGN)." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/431.

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The human body is a well tuned mechanism where systems work in synergy to provide a healthy quality of life. The human circulatory system transports oxygenated blood from the heart to the rest of the body delivering the proper nutrients for cells to function. When the heart malfunctions, serious complications can arise leading to sudden cardiac arrest. Congestive heart failure (CHF) is one heart disease that affects the synchrony of the heart’s ventricles. Cardiac resynchronization therapy (CRT) has been widely accepted as a treatment for CHF. Similar to traditional dual chamber pacing techniques, CRT adds a pacing lead to stimulate the left ventricle. Left ventricular leads are implanted via the coronary sinus which provides the easiest surgical access to the left ventricle. Another option for LV pacing is by using an epicardial lead. This option has proven to be safe and effective but requires major surgery. An epicardial lead is usually implanted by performing a thoracotomy. Many studies have been done to show the benefits of bi-ventricular pacing, therefore developing new methods to gain LV access safely and reliable are highly desirable. The epicardial satellite pacemaker, or EPI pacemaker, is a component of a larger CRT system. This implantable cardiac system is composed of a master pacing unit with leads and a remote satellite pacing unit. The master unit is a traditional CRT device electrically coupled to the right side of the heart. It controls the right atrium and ventricle via transvenous leads anchored to the endocardium of the heart. The master device generates the pacing pulses to stimulate the right atrium and right ventricle and a communications module to transmit pacing commands to the epicardial satellite device. The epicardial satellite pacemaker is a leadless device mounted directly on the epicardium of the left ventricle. The epicardial pacemaker can be implanted using a thoracoscopic procedure during implant of the master unit. In special events, it can be implanted using prophylactic techniques during heart bypass surgery of other surgical procedures where access to the heart is available. Much work needs to be done to prove the technology. But current RF communication capabilities in today’s devices offer the groundbreaking path to develop a satellite LV pacing design.

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Dissertations / Theses on the topic 'Technique and equipment'

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