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Dissertations / Theses on the topic 'Office equipment and supplies'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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1

De, Jonge Desleigh. "Putting technology to work : experiences of people using assistive technology in the workplace /." St. Lucia, Qld, 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16744.pdf.

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2

Ginjbaatar, Bilguun. "Creating an online shopping Website for "Chinguun-Tulga" office supply store /." Related Web site, 2007. http://www.chinguun-tulga.com/catalog/.

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3

Gagnon, Paul-Dominique. "La P.M.O. : un modèle d'achat et d'implantation pour l'informatisation du bureau /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1990. http://theses.uqac.ca.

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4

Khalifeh, Ali, and Olga Cherednichenko. "Towards the suppliers choice problem for after-sales service center of office equipment." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2011. http://repository.kpi.kharkov.ua/handle/KhPI-Press/46402.

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5

Nelson, Graham Martin. "Development of an Experimentally-Validated Compact Model of a Server Rack." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19726.

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A simplified computational fluid dynamics and heat transfer (CFD-HT) model of an electronics enclosure was developed. The compact model was based on a server simulator, which dissipates a variable amount of heat at an adjustable air flow rate. Even though a server simulator does not accurately represent the geometry of an actual electronics enclosure, the modeling of such a unit deals with many of the same issues as the modeling of actual enclosures. Even at the server simulator level, a disparity in length scales prevents detailed modeling of intricate components most notably grilles, fins, and fans. Therefore, a compact model for each of these components was developed. Fan performance curves were determined experimentally for varying fan rotational speeds. In addition, component pressure drop characteristics were found experimentally for grilles and fin banks, and these empirical relationships were applied to the model as well. To determine the validity of the simplifications employed in the model, experimental outlet temperature and velocity measurements were taken to compare to those provided by the CFD-HT simulations.

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6

San, Juan Newton Carvalho César de. "Gestão de manutenção em clínicas e consultórios odontológicos aplicado a compressores de ar: gestão de manutenções preventivas baseada na confiabilidade dos compressores de ar /." São José dos Campos, 2018. http://hdl.handle.net/11449/165259.

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Orientador: Antônio Carlos Varela Saraiva
Banca : Vladir Wagner Ribas
Banca: José Benedito Oliveira Amorim
Resumo: Manutenções preventivas ou manutenções centradas na confiabilidade são ações sistemáticas, normalmente programadas, de controle e monitoramento, objetivando a redução de falhas com o aumento da usabilidade de equipamentos. Defeitos em máquinas, equipamentos ou em processos são fonte de prejuízos para clínicas e consultórios odontológicos, caso estes venham apresentar falhas de funcionamento ou simplesmente deixem de cumprir a função fim. Tais manutenções já são usufruídas pela indústria que visam programar paradas em equipamentos ou processos antes que falhas ocorram. Estas programações levam em consideração: a) o tempo que o equipamento ou processo deverá ficar parado para a execução de ajustes de variáveis de processo; b) substituição de componentes antes do fim da vida útil prevenindo dano pelo uso; c) planejamento da substituição do equipamento como um todo ou parte deste, no próprio local ou fora das instalações, conforme necessário. Falhas ocasionam algum impacto no faturamento em postos de serviço odontológico, pois geram retrabalho para o odontologista que tem parte de seu tempo que deveria ser produtivo, indisponível para o trabalho. Neste trabalho foi realizada uma pesquisa com diversos profissionais da área de odontologia, que utilizam equipamentos sujeitos a falhas. A partir da pesquisa foi identificado que compressores de ar são os equipamentos que mais geram prejuízos. Um equipamento embarcado de gestão, monitoramento e aviso foi projetado e desenvolvido para o ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Preventive maintenance or maintenance focused on reliability are systematic actions, usually scheduled, of control and monitoring, aiming to reduce failures with increasing usability of equipment. Defects in machines, equipment or processes are a source of damage to clinics and dental offices, if they are malfunctioning or simply fail to fulfill the purpose. Such maintenance is already used by the industry, which aims at scheduling stops at equipment or processes before failures occur. These schedules take into consideration: a) the time that the equipment or process should be stopped for the execution of adjustments of process variables; b) replacement of components before the end of the useful life preventing damage by the use; c) planning the replacement of the equipment as a whole or part thereof, on-site or off-site as required. Failures cause some impact on the billing at dental service stations, because they generate rework for the dentist who has part of his time that should be productive, unavailable for work. In this work a research was carried out with several dentistry professionals, who use equipment subject to failure. From the research it was identified that air compressors are the most damaging equipment. An embedded management, monitoring and warning equipment has been designed and developed to assist in the management of preventive maintenance of air compressors in clinics and dental offices
Mestre

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7

Mac-Lean, Andres (Andres Felipe) 1959. "Introducing the concept of office supplies superstores in Chile." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9186.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management, 2000.
Also available online on DSpace at MIT.
Includes bibliographical references (leaf 88).
The concept of office supplies superstores doesn't exist in Chile. This thesis defines an entry strategy for this concept in Chile. The thesis is divided into two areas: 1. An analysis of the office supply industry in the USA mainly represented by Staples. This work is based on the application of the Delta Model. This part includes an analysis of the environment, a detail analysis of Staples (mission, organization, the store, business strategy, operations, marketing, expansion, web, acquisition and financial analysis) and a structural analysis of the industry (Porter's five-forces model.) 2. The second part of the thesis consists of a Business Plan to introduce such model in Chile by evaluating the following factors: the market, the competition, investment required, distribution strategy, operational plan, sales and marketing, exit strategies, risks and financial projections.
by Andres Mac-Lean.
M.B.A.

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8

Harty, Michael David. "Statistical process control as a tool for expert system diagnostics." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/24853.

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9

Al-Ansary, Hany A. "Investigation and improvement of ejector-driven heating and refrigeration systems." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/36540.

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10

Bares, John Alvin 1951. "Preliminary equipment selection analysis of mining shovels and haulage trucks." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/558076.

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11

Rothsching, Norman. "The effect of shaft stiffness on the performance of the ice hockey slap shot." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ43940.pdf.

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12

Villaseñor-Herrera, Alejandro. "Recoil effect of the ice hockey stick during a slap shot." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81450.

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This thesis examined the 'recoil' effect of the ice hockey stick shaft during a stationary slap shot. Nine subjects were tested. Four were classified as 'elite' and the remaining five as the 'recreational' group. Their performances were evaluated by simultaneously recording stick movement and bending from high-speed video capture (1000 Hz) and puck acceleration from a triaxial accelerometer positioned inside the puck. Data were analyzed with a one-way ANOVA for several dependant variables including final puck velocity, stick shaft bending, blade-puck contact time and stick kinetic energy. The results indicated that: (1) the puck velocity was influenced by skill level, blade-puck contact time and stick bending energy but not puck acceleration. Further studies are needed to address the influence of events before and after blade-puck contact as well as the strength of the player on the mechanical energy and impulse given to the puck.

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Dowler, Patrick McLean 1983. "Effects of ice hockey facial protectors on response time and kinematics." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111600.

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Ice hockey facial protectors are essential to prevent eye and dental injuries but must also not encumber vision and, in turn, players' performance. The purpose of this study was to investigate the effects of three different facial protection conditions on response time (RsT) and kinematics in a goal directed pointing task: helmet (control), visor, and cage. A 13 light target array and six-camera Vicon Mx system were used to collect response time and kinematic data. Subjects recruited were 16 male and 12 female varsity ice hockey players (n=28). Results demonstrated that although kinematics remained largely unaffected, throughout the visual field test RsT increased significantly with the cage (23 ms) as well as delayed head movement for both the visor (14 ms) and cage (18 ms). These differences may well represent a functional disadvantage to a player's performance given the dynamic, open environment where multiple players contest for puck possession. In summary, further research is warranted to achieve both optimal performance and safety.

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Aspelund, Kristinn A. "Optimization of plate-fin-and-tube condenser performance and design for refrigerant R-410A air-conditioner." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19488.

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15

Triantafillopoulos, Nicholas G. "Fluid dynamics of short-dwell blade coater ponds and their relationship to cross directional coat weight nonuniformities." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/5592.

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16

Woo, Timothy Keith. "A three dimensional comparison of elite and recreational ice hockey slap shots /." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81455.

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The purpose of this thesis was to examine the three dimensional kinematic differences between elite and recreational ice hockey players while performing a stationary slap shot. Ten subjects, five elite-level players and five recreational players, each performed five stationary ice hockey slap shots. Data were collected using the UltratrakRTM electromagnetic system (Polhemus Inc., Burlington, VT, USA) at 60 Hz. Kinematics of the torso, arms and hockey stick were examined using a multiple analysis of variance (MANOVA). The results indicated that: (1) the elite subjects shot significantly (p < 0.05) faster due to the translational movement aspect of the stick; (2) the proximal to distal kinematic chain sequence of the elite subjects was better than the recreational subjects; and (3) the elite subjects showed less variability in stick movement within groups, than the recreational subjects. Further studies are needed to address kinematics of the lower limbs and of different ice hockey stick skills.

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17

Wu, Tong-Ching Tom. "The performance of the ice hockey slap and wrist shots : the effects of stick construction and player skill." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33949.

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This thesis was to examine the interaction of players' skill level, body strength, and various types of stick construction and stiffness on the performance of the hockey shots. Forty subjects were tested, and each subject performed the slap and wrist shots with different stick shaft constructions and stiffness. Shot mechanics were evaluated by simultaneously recording of ground reaction forces, stick movements and peak puck velocity. Data analyzed with a 4-way ANOVA for several dependent variables. The results indicated that: (1) the slap shot was faster than the wrist shot corresponding to greater vertical force, stick bending and hand placement; (2) the puck velocity was influenced by skill level and body strength not stick type; and, (3) the skilled players generated greater vertical force and stick bending by adjusting their hand positions. Further studies are needed to address the specific stick material and construction properties.

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18

Huppert, Theodore. "A lockout/tagout system for Energy Solutions International Manufacturing Facility in Mendota Heights, Minnesota." Online version, 1998. http://www.uwstout.edu/lib/thesis/1998/1998huppertt.pdf.

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Ramadan, Gamil, and Olga Cherednichenko. "Simulation model of after-sales service process of office equipment." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2011. http://repository.kpi.kharkov.ua/handle/KhPI-Press/46405.

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20

Bennink, Dirk. "Design of solids separation equipment : a thesis." Thesis, Queensland University of Technology, 1989. https://eprints.qut.edu.au/36450/1/36450_Bennink_1989.pdf.

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This work covers a reassessment of the 'Hot Break' separation problem by a mechanical engineer from outside the brewing industry. The solid-liquid separation problem was therefore investigated without prior knowledge of constraints or current practices. During the brewing of beer an unwanted, insoluble precipitate, 'trub' is formed, reported to have undesirable effects on the finished beer quality. The existing equipment, 'whirlpool' separators, designed to eliminate this 'trub' performed poorly, allowing much of the precipitate to be carried over to subsequent processes. To remedy the problem, a program to either: 1. design suitable replacement separators or; 2 • modify existing separators to enhance their performance, was pursued. To evaluate possible alternative separators determination of the relevant physical (solid, liquid) properties, measurement of the process parameters at peak production, and review of the chemical constraints was necessary. Performance of the current whirlpool separators was ascertained to establish the extent of the ~xisting problem. Existing efficiencies set a benchmark for comparison against proposed alternatives. Through exhaustiv~ literature review, consultive advice, a series of experiments and rig testing, an extensive range of separation techniques was evaluated, A review of over forty-five reports on whirlpool performance and design practices, the majority of which being the basis of doctoral dissertations, combined with the evaluation of a third whirlpool at Milton Brewery revealed whirlpools to be the most suitable and logical choice. It seemed that the inherent problems in whirlpool design stem from the haphazard approach adopted by the brewing industry. To redress this problem an exp~rimental program to optimize whirlpool tank geometry and operation was initiated. Both experimental and hardware design were fundamentally different to all previous endeavors to establish whirlpool design guidelines. A pilot plant was designed and commissioned such that direct measurement of the 'whirlpool' response independent of other secondary effects was possible. The experimental program produced · over two hundred comparative whirlpool indices over a range of geometric and operational configurations. These suggested that whirlpool performance could be optimised in shallow vessels using low inlet velocities. Finally, the need for secondary separators to be used in conjunction with whirlpool tanks would diminish with improved primary separation.

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21

Smith, N. J. "North Sea Oil and Gas, British Industry and the Offshore Supplies Office 1963 - 1993." Thesis, University of Aberdeen, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485654.

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The thesis reviews the opening conditions of the British economy and the evolution of offshore technology before examining the re~tions ofthe private sector and of government, particularly the formation, functions and operations ofthe Offshore Supplies Office. The 'The Full and Fair Opportunity' agreement with UKOOA and the role of 'UK content' and the sponsorship ofR & D in licence awards are considered. Relations With the USA, Norway and other European countries, as well as the European Commission are covered, including the ending ofthe Interest Relief Grant Scheme and the impact ofthe European Single Market. Case studies showing the performance ofBritish business in the contract drilling and drilling fluids market segments and of four companies, British Underwater Engineering, Expro International, Trafalgar House and the Wood Group illustrate key determinants of success or failure. ' After the tes~ing ofexplanatory propositions, a range of measures that might have improved British industrial performance is suggested.

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Sutherland, Robert Allan, and mikewood@deakin edu au. "Exposure to fumes and gases during welding operations." Deakin University, 1998. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050902.143604.

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The exposure to fumes and gases is one of the hazards associated with welding operations. Apart from research conducted on the mechanism of fume and gas formation and the relationship between fume formation rates and common welding parameters, little is known about the exposure process during welding. This research project aimed to identify the factors that influence exposure, develop an understanding of their role in the exposure process and through this understanding formulate strategies for the effective control of exposure during welding. To address these aims a literature review and an experimental program was conducted The literature review surveyed epidemiological, toxicological and exposure data. The experimental program involved three approaches, the first, an evaluation of the factors that influence exposure by assessing a metal inert gas/mild steel welding process in a workshop setting. The second approach involved the study of exposure in a controlled environment provided by a wind tunnel and simulated welding process. The final approach was to investigate workplace conditions through an assessment of exposure and control strategies in industry. The exposure to fumes and gases during welding is highly variable and frequently in excess of the health based exposure standards. Exposure is influenced by a number of a factors including the welding process, base material, arc time, electrode, arc current, arc voltage, arc length, electrode polarity, shield gas, wire-to-metal-work distance (metal inert gas), metal transfer mode, intensity of the UV radiation (ozone), the frequency of arc ignitions (ozone), thermal buoyancy generated by the arc process, ventilation (natural and mechanical), the welding environment, the position of the welder, the welders stance, helmet type, and helmet position. Exposure occurs as a result of three processes: the formation of contaminants at or around the arc region; their transport from the arc region, as influenced by the entry and thermal expansion of shield gases, the vigorous production of contaminants, thermal air currents produced by the heat of the arc process, and ventilation; and finally the entry of contaminants into the breathing zone of the welder, as influenced by the position of the welder, the welders stance, helmet type, and the helmet position. The control of exposure during welding can be achieved by several means: through the selection of welding parameters that generate low contaminant formation rates; through the limitation of arc time; and by isolating the breathing zone of the welder from the contaminant plume through the use of ventilation, welder position or the welding helmet as a physical barrier. Effective control is achieved by careful examination of the workplace, the selection of the most appropriate control option, and motivation of the workforce.

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King, Matthew David. "Nanoparticle-Based Biosensor System for Rapid Detection of Target DNA Sequences." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/KingMD2008.pdf.

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Vinamata, Xavier F. "Development of a noise rejecting sensor for conformal hull arrays." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17226.

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Lemair, Mylene. "Evaluation of impact attenuation of facial protectors in ice hockey helmets." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101599.

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The purpose of this study was to investigate whether ice hockey facial protectors can decrease overall head acceleration during blunt impacts as well as to identify if attenuation differences exist between visors and cages. Commercial models of three cages and three visors were assessed. Blunt impacts were simulated permitting the measurement of peak accelerations (PA) within the surrogate head form. Results indicated that indeed face protectors in combination with helmets substantially reduced PA during blunt impacts within threshold safety limits (below 300 g's). In general, cages showed lower PA than visors (p=0.004). Differences between models were also observed during repeated impacts and impact site (p=0.0001, p=0.007). In conclusion, this study demonstrates that facial protectors function beyond their role in preventing facial injuries, complementing the role of the helmet in attenuating head deceleration during impact. Consequently, the utilization of facial protectors may reduce the severity and incidence of mTBI.

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26

黎自強 and Chi-keung Peter Lai. "Protocol-led weaning of mechanical ventilation in adult intensive careUnit." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40720895.

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劉玉賢 and Yuk-yin Lau. "Effect of treatment interference protocol (TIP) on the use of physicalrestraints in ICU." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B4072170X.

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28

Zielinskie, David Alphonse 1959. "Automatic control and data analysis of a multichannel millimeter wave radiometer." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276787.

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This thesis describes a multi-channel millimeter wave radiometer control system that will be used for atmospheric water vapor and temperature profile retrievals. The system consists of four subsystems which provide a total of nine frequency channels, a steerable reflector to permit slant-path measurements at different zenith angles, and a host computer for analyzing the data. The nine channels span the water vapor and oxygen absorption lines in the 20 to 60 GHz range. A distributed processing architecture is implemented to control the system. Each of the subsystems employs a signal processor and a microcontroller, which are configurable from the host. The signal processor filters the receiver's output, while the microcontroller oversees the radiometer, accepts data from the signal processor and communicates with the host. The host executes a custom shell that allows it to concurrently accept data from the subsystems, position the reflector and execute user analysis programs.

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Garcia, Claudett Nicolas, Fernández Renato Lastarria, Zamudio Luz Stefanny Lizana, and Lanatta Nicolas Sifuentes. "Implementación de Utilibro." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626656.

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El presente proyecto sobre útiles escolares o artículos de oficina nos muestra la viabilidad de su ejecución, este proyecto está dirigido a padres de familia y personas que laboran en oficinas que viven, trabajan o radican en la zona 7 de Lima Metropolitana, nos estamos refiriendo a los distritos de San Borja, San Isidro, Miraflores, Surco y La Molina. Nos hemos enfocado en ese target, debido a que según nuestras investigaciones se les hace muy complicado la compra de útiles escolares a inicios de cada año escolar a los padres de familia, y por otro lado a las personas que laboran en oficina se les hace complicado comprar distintos artículos por su falta de tiempo, ambos coinciden en que es tedioso hacer estas comprar por el tiempo, la comodidad, los precios, entre otros. Es por eso que Utilibro ofrece útiles escolares o artículos de oficina a unos precios menores a los del mercado, adicionando un servicio de delivery para simplificar la vida de los consumidores.
This project about office and school supplies shows the viability of its execution. It is focused on both parents with children aged 6 to 17 and office men that live in the districts of San Borja, San Isidro, Miraflores, Santiago de Surco and La Molina from Metropolitan Lima. We targeted those segments because our investigation concluded that it is difficult for parents to acquire all the school supplies required at the beginning of the academic year and office men usually don’t have the time to invest in buying supplies for their workplace. Both segments coincide in the fact that it is tedious to get those supplies for a matter of time, confort, pricing, etc. That’s why Utilibro offers the solution by selling both school and office supplies at a lower cost and delivers the orders to the place designed by our customers.
Trabajo de investigación

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30

Webster, James. "The perception of comfort and fit of personal protective equipment in sport." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6242.

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During the design of sports equipment, the main focus is usually on physical performance attributes, neglecting key subjective factors such as feel and comfort. The personal protective equipment worn in sport is a typical example, where injury prevention has taken precedence over user comfort, but it is anticipated that with a new approach to the design process, comfort can be improved without sacrificing protection. Using cricket leg guards and taekwondo chest guards as an example, this study aimed to develop a systematic method for assessing user perceptions and incorporating them into the design process. Players perceptions of the factors that influence the comfort of cricket leg guards and taekwondo chest guards were elicited through the use of co-discovery sessions, focus groups and individual interviews, and analysed through an inductive process to produce a comfort model. The relative importance of each different comfort dimension was identified through the use of an online questionnaire utilising the analytical hierarchy process method. Through the combination of these methods, six general dimensions were identified with a weighting regarding the amount to which each one determines a user's perceived comfort. For both cricket and taekwondo, the majority of players ranked Fit as the most important factor affecting comfort. Experimental procedures were developed to objectively test the Fit of cricket leg guards, with regards to batting kinematics, running performance and contact pressure. These methods were combined with subjective assessments of leg guard performance, to determine if there was a relationship between users perceived comfort and objective test results. It was found that shot ROM and performance were not significantly affected by cricket leg guards, despite perceptions of increased restriction whilst wearing certain pads. Wearing cricket leg guards was found to significantly decrease running performance when compared to running without pads (p<0.05). In addition, it was found that the degree of impedance depended on pad design and could not solely be attributed to additional mass. These results correlated with the subjective assessment of three different leg guards, with respondents identifying the pad which had the largest influence on their running biomechanics and impeded their performance the most, as the most restrictive pad. Contact pressure under the pad and straps was also measured for four different leg guards whilst running. The results found that the top strap applied the greatest amount of pressure to the leg, especially at the point of maximum knee flexion. The peak pressure under the top strap was found to reach up to three times that of any other area of the pad. These results were reflected in the subjective assessment of the leg guards, with all nine subjects identifying the top strap as an area of discomfort for certain pads. The results also suggested there was a preference for pads with a larger more consistent contact area, as pad movement was perceived to increase when contact area variation was greater. Finally the results from this research were used to develop a product design specification (PDS) for a cricket leg guard, specifying size, mass, contact pressure and shape. The PDS was used to develop a concept design which would maximise comfort, whilst maintaining protection.

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Söderström, Charlotte. "Measuring microbial activity with an electronic tongue /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/tek816s.pdf.

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32

Gunn, Bernard. "Detection of needle wear in an automated sewing process." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/8533.

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Wu, Wei-Chung. "On-chip charge pumps." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/13451.

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Gray, Michael Dean. "An experimental investigation of the anomalous behavior of underwater acoustic volume displacement sensors." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/16796.

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Sadler, Emma May. "Design analysis of a finned-tube condenser for a residential air-conditioner using R-22." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/17951.

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36

Hakim-Zadeh, Roghieh. "Durability of ice hockey helmets to repeated impacts." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29505.

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This study evaluated the mechanical durability of ice hockey helmets for multiple impacts at defined energy levels. A monorail drop testing apparatus was used to conduct controlled impact tests according to the CSA standard (CAN/CSA-Z262.1-M90). Five ice hockey helmet models were tested, for a total sample of 45 helmets. All helmets were impacted up to 50 times at each of in four different locations (i.e. front, right side, back, and crown), at one of 40, 50 or 60 J of kinetic energies. In general, by increasing the impact energy, the impact acceleration attenuation properties of the helmets was decreased significantly (from 4% to 80%). Although all the helmets meet the CSA standards, attenuation properties were found to be substantially reduced beyond three repeated impacts and above 40 J impact energy. In particular, all helmets showed effective multiple impact attenuation properties at the crown, front, and rear sites; however, poor multiple impact attenuation durability was evident at the side.

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Lomas, Sarah A. "Effects of puck mass on shot velocity of female ice hockey players." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81360.

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The purpose of this study was to examine the effect of puck mass on shot velocity of female ice hockey players. The contributions of upper body strength and skill level to shot velocity were also examined. Female varsity and recreational players (n = 29, age = 21.3 yr) performed shooting tests on ice. The participants shot 20 light weight (5 oz) and 20 regulation (6 oz) pucks, using 4 different types of shots (standing wrist shot, standing slap shot, skating wrist shot, skating slap shot). The on-ice tests were followed-by 3 musculoskeletal tests; predicted 1 repetition maximum (1 RM) bench press, hand grip, and sit-ups. The light weight puck resulted in a significantly higher velocity compared to the regular weight puck (P < 0.05). The average shooting velocity was 1.4 km/h higher with the light weight puck compared to the regular puck (69.8 vs. 68.4 km/h) based on overall means (4 shots x 2 pucks). Positive correlations were found between overall shot velocity and musculoskeletal tests of hand grip (r = 0.81), predicted 1 RM bench press (r = 0.77), and sit-ups (r = 0.48). These results are discussed in relation to literature on the women's ice hockey and physiology.

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Kress, Reid Leonard. "Adaptive model-following control for hyperthermia treatment systems." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184430.

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The purpose of this research was to develop three real-time adaptive temperature controllers for hyperthermia heating systems. Each scheme is made adaptive by using a transient Gaussian estimation routine to estimate the tissue blood perfusion and by then using these estimated values either in an optimizing routine, or in an observer, or in both. The optimizing routine uses a steady-state Gaussian estimation technique to optimize the power distribution until the best possible match is obtained between the steady-state temperatures predicted by a treatment model and a prespecified ideal temperature distribution. The observer uses a treatment model to control unmeasured locations. The first adaptive control scheme uses the optimizing routine alone, the second uses the observer alone and the third uses both the optimzing routine and observer. The performance of each of the adaptive control schemes is compared to a standard proportional-integral-derivative (PID) control scheme for one-dimensional simulations of typical treatments. Results comparing the deviation of the controlled temperature distribution to the ideal desired temperature distribution for all locations and all times indicate that the adaptive schemes perform better than the PID scheme. It can be concluded that adaptive control yields improved performance if good a priori knowledge of the treated region tissue and perfusion region boundaries is available. While these control schemes were designed for eventual implementation on a scanned focused ultrasound hyperthermia treatment system, the techniques are applicable to any system with the capability to vary specific power with respect to location and with an unknown distributed energy sink proportional to the temperature elevation.

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Aryana, Shahla. "Advanced operation and optimisation of an industrial ethylene oxide plant." Phd thesis, Faculty of Engineering and Information Technologies, 2009. http://hdl.handle.net/2123/5402.

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Schmid, Volker. "Design of a Two-Chamber-NO2-Fluorescence-Cell." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5263.

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Nitrogen oxides control the photochemical production of ozone 03 in the lower atmosphere and influence the concentration of the hydroxyl radical HO in the troposphere. As an important member of the nitrogen oxide family, N02 plays a significant role in serving as the only known source of ozone (through photolysis) in the lower atmosphere and as sink for HO via formation of nitric acid. Therefore, accurate measurements of nitrogen dioxide are essential for the understanding of the processes that determine the distribution of tropospheric ozone and for assessing the impact of human activity on the troposphere. Although reliable and sensitive techniques for the direct measurement of nitric oxide NO have been developed, these results could not be fully applied to direct N02 measurements. The purpose of the present study was to further develop a low pressure laser-excited fluorescence technique for measuring N02 by introducing the idea of a Two-Chamber-Fluorescence-Cell. Theoretical considerations of the performance of such a cell and the flow regime within the cell were done in order to assess the optimum cell design and the conditions for optimum operation. Measurements on a provided two-chambered test cell were done to verify the theoretical predictions made. This test cell has been explored with a Nd:Y AG pumped dye laser (100mW@564nm, 30Hz) and a supplied N02 concentration of lOOppm. The theoretical results suggest that the concept of a Two-Chamber-N02- Fluorescence-Cell yields an improved sensitivity compared to present direct techniques for measuring N02 In addition, experimental results give a better understanding of how to realize the initial idea of an operating Two-Chamber-N02- Fluorescence-Cell.

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Wong, Hon-chung Wilson. "Organizational transformation of a customer service division to cope with technological change in office automation equipment /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18836136.

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Lam, Siu Tong. "Influence of insertion/donning instruction on frequency-specific sound attenuation achieved with ear canal caps and earmuffs with implications for industrial noise application." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/76037.

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A study was conducted to determine the dependency of sound attenuation capabilities of earmuffs and earcaps on various application instruction techniques including: (1) no instruction, (2) no instruction with 70 dBA auditory feedback, (3) manufacturers' package instruction, (4) detailed instruction, and (5) modeled instruction. The hearing protection devices (HPDs) studied were: two earcaps (Willson #20 Sound-Ban, Flents #055 Peace & Quiet Headband), and four earmuffs (E-A-R model 1000, Siebe Norton Industrial model 4540, Peltor H6A/v, and Willson 365A Sound Barrier). HPD comfort and wearer preferences were also assessed. Furthermore, typical excessive industrial machinery noises were sampled and analyzed across the 1/3 octave frequencies. Finally, an example is provided as to how these machinery noise spectra can be matched with HPD attenuation spectra to ascertain the protector which would afford optimal protection for a given noise situation. Fifty subjects (twenty-five males and twenty-five females) participated in the experiment. Attenuation characteristics of the HPDs were evaluated utilizing the real-ear attenuation at threshold (REAT) method. A three-way mixed factorial design was used for data collection and analysis of attenuation results. Bipolar scales were used to assess individual HPD comfort, and the HPDs examined were ranked to obtain user preferences. In the analysis of attenuation results, analysis of variance CANOVA) and pairwise comparisons were utilized to detect statistical significance. The comfort scales and ranking scores were evaluated using the Friedman one-way block design. Attenuation results for the earmuffs and earcaps tested showed that they were much less susceptible than earplugs (from a previous study by Epps, 1984) to changes in user insertion/donning instruction technique and also not as dependent on user gender. The main effect of gender was not significant, and in general, any instruction was better than no instruction at all but the effects of those instructions did not differ significantly among each other. As expected, there were main effect differences among the HPDs as to their attenuation capabilities, rated discomfort, and user preference. Because the main objective was on assessing donning instruction effects on HPD attenuation, the comfort/preference assessment was based on only a short (25 minutes) wearing time during the attenuation tests. Therefore, the comfort/preference ratings could likely vary given longer wearing periods and different work environments. All results found are discussed on the basis of the sample data obtained and conclusions drawn from these results should be limited to these experimental conditions and subsequent analyses, as actual attenuation achieved in practice may differ. The example of HPD-machinery noise matching illustrates that the attenuation/spectral matching procedure may indeed be a feasible way of selecting optimal protection for workers.
Master of Science

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Madhavan, Thiruvenkatachari, and n/a. "Implementation of enterprise systems : a process view." University of Otago. Department of Accountancy and Business Law, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080414.160905.

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During the 1990s, many organizations across the globe migrated existing information systems to Enterprise Systems (ES) packages, which promised both business and technical solutions to their existing sets of problems. However, ES implementations have gained notoriety for not meeting budgeted expenditures and schedules. Such events have warranted academic research to gain an understanding about the role of ES packages and the importance of ES implementation. A large number of academic researchers have adopted a variance approach to examine ES implementation. As a result they have identified a range of critical success factors said to be influential in achieving successful implementation of ES packages. An alternate perspective for researching ES implementation is the process approach but this has remained largely neglected in academic debates. Furthermore, it has still not been possible for researchers or practitioners to understand the degree to which specific critical success factors, or other considerations, might be influential in any given ES implementation, either pre- or post-project. This research therefore adopts the process approach to examine ES implementations. The process approach is focused on explaining an outcome, given a set of activities. This research draws upon the work of Markus and Tanis (2000) and O�Leary (2000), who have established frameworks to explain an outcome (success or failure) of ES implementations. In addition, this research draws on the work of Davenport (2000) and Brehm et al. (2001), who have established models that outline activities related to configuration of business and software processes during implementation of ES packages. To enable this inquiry, a single case study (site) was chosen, to expose the actions and events that transpired during the implementation of an ES package. This research concludes that the framework of O�Leary (2000) is better suited to explain the outcome of an ES Implementation than the framework of Markus and Tanis (2000). The framework of Markus and Tanis (2000) was found to be useful in understanding the implementation process of an ES package. In addition, this research developed a novel model that portrays a comprehensive set of activities, undertaken by the case organization during the configuration of business and software processes. This model traversed the 'High-Level', 'Detailed Development' and 'Implementation' stages of the configuration process. It is asserted that this model is a significant improvement when compared to models presented by Davenport (2000) and Brehm et al. (2001). This research also explored some of the issues of the case study that did not fit neatly into the existing theoretic frameworks employed. Six issues emerged in this regard; 'Selection of industry specific ES package solution'; 'Selection of Proven Implementation Partner'; 'Project Planning and Management'; 'Incremental Implementation Strategy'; 'Ownership of the ES Project' and 'Selection of Best Practice Business Processes'. It is contended that each have played a critical role in the successful deployment of the ES package at this case site.

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Spyrou, Evangelos. "The effect of shell geometry on the impact attenuating capabilities of ice hockey helmets relative to liner structural characteristics and impact conditions." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29578.pdf.

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Richman, Jacinda. "Soil physical properties under the influence of different mechanical weeders." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/MQ44259.pdf.

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46

Cracolici, Benedict. "Effect of Shear Rate and Mixing Time on Starch/Polyacrylamide Gels as Retention Aids." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/CracoliciB2004.pdf.

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47

Yuen, Pong-ming Dixon, and 阮邦明. "The Main Building of The University of Hong Kong: fire services installation guidelines for maintainingauthenticity." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31474925.

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Wang, Qingsu 1952. "Management of continuous system models in DEVS-SCHEME: Time windows for event-based control." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/291950.

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This thesis describes the design and implementation of an extended knowledge-based modeling and simulation environment, in which the management of continuous-time models in DEVS-SCHEME is realized to meet the requirements of the modeling and simulation of a robot-managed laboratory aboard the forthcoming Space Station Freedom. The modular hierarchical modeling scheme is preserved in the continuous models by using DYMOLA, a continuous modeling language, as a bridge between the abstracted DEVS models and the continuous simulation language code (in DESIRE). Through operations on the System Entity Structure (SES), a knowledge representation scheme, models at different granularity levels are generated. Time-windows can be obtained by manipulating a pruned SES. These time windows can be used to generate an equivalent discrete-event model at a coarser granularity. Therefore, an event-based intelligent control strategy can be realized in this knowledge-based multi-facetted modeling environment. Continuous-time and discrete-event modeling and simulation can be merged with AI techniques.

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Joubert, Polly Ann. "Production of enteral feeds : manual vs mechanised vs 'ready to hang'." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53560.

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Thesis (Mnutr)--Stellenbosch University, 2003.
ENGLISH ABSTRACT: INTRODUCTION Many patients seen by dietitians in Tygerberg Academic Hospital require feeding via the enteral route. Prior to this study all enteral feeds were mixed individually by hand, and production was time consuming and very labour intensive. The purpose of this study was, therefore, to compare the current method of production, with mechanised bulk production (MP) and "Ready to hang" (RTH) products, taking time, safety and cost effectiveness into consideration. MATERIALS AND METHODS A machine was designed and built to produce and decant bulk volumes of enteral feed. Production methods were evaluated and data was obtained regarding the time taken to produce a feed, and the true cost of the feeds produced. Microbiological samples were collected and the safety of all the three systems was determined and compared. RESULTS MP production time was significantly longer than hand production (HP), but MP decanting was significantly more accurate. RTH feeds cost 152% more than HP feeds, and MP feeds cost 95% of HP feeds. Seventy-one per cent of HP feeds, 74% of MP feeds and 34% of RTH feeds were contaminated just after administration had began. CONCLUSIONS Mechanisation is less labour intensive than HP and helps to decrease total costs. RTH feeds quickly become contaminated after administration decreasing their other advantages.
AFRIKAANSE OPSOMMING: IN L E ID IN G Baie van die pasiente wat deur dieetkundiges in Tygerberg hospitaal gesien word, benodig buisvoedings. Vo or hierdie studie geloots was, was alle buisvoedings by Tygerberg hospitaal met die hand gemaak. Hierdie metode is baie tydsaam en arbeidsintensief. Die doel van hierdie studie was, om die voorlopige sisteem van produksie te vergelyk met gemeganiseerde grootmaat produksie en "ready to hang" (RTH). Die studie het die volgende in ag geneenv produksietyd, mikrobiologiese veiligheid en koste effektieweteit. METODE 'n Masjien was ontwerp en gebou om grootmaat buisvoedings aan te maak en aftegiet. Produksie metodes was geevalueer en inligting bymekaar gemaak met betrekking tot produksietyd, en die ware koste van die voedings. Mikrobiologiese monsters was versamel en die mikrobiologiese veiligheid van al drie sisteme is bepaal en vergelyk. RESULTATE Produksie met die masjien was betekenisvol longer as die voedings wat met die hand gemaak was, maar die masjien het betekenisvol meer akkuraat afgemeet met afgiet. RTH voedings se koste beloop 152% meer as voedings wat met die hand gemaak word, en voedings wat deur die masjien gemaak word kos 95% van die wat met die hand gemaak is. Een en sewentig persent van die voedings wat met die hand gemaak was, 74% van die masjiengemaakte voedings en 34% van die RTH voedings was besmet net na toediening begin was. GEVOLGTREKKINGS Meganisasie is minder arbeidsintensief as voedings wat met die hand gemaak is en help om die kostes af te bring. RTH voedings word vinnig besmet met organismes na die begin van toediening en dit verminder hulle ander voordele.

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Wang, Zheng. "The design and implementation of a computer-controlled pneumatic device to replace the deadweight in standard exercise equipment." Thesis, Cape Peninsula University of Technology, 2007. http://hdl.handle.net/20.500.11838/1384.

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Thesis (MTech (Information Technology))--Cape Peninsula University of Technology, 2007
The increasingly sedentary lifestyle of the past 30 years has contributed to declining health. Consequently, exercise is vital for good health maintenance. The global Health and Fitness Industry repeatedly indicates the need for optimally managed exercise with accurate information feedback. Compared to other industries, the fitness industry is lagging behind in incorporating Information Technology into its operations. On the other hand, the most current exercise equipment impose fixed-trajectory exercise on users with the dominance of static equipment designs. These exercise equipment are normally deadweight-based equipment. In deadweight-based exercise equipment, the weights generally can be changed only when the equipment is inactive. Therefore, a more novel exercise environment is required for current exercisers in the fitness industry. This thesis explores to develop a computer-controlled pneumatic dynamic resistance exercise equipment with onboard data management. This new technology optimises exercise effectiveness for users. Exercisers will have advanced diagnostic capacity, and will capture user data which can be manipulated into meaningful information for use by Health and Fitness Industry stakeholders. This thesis will explore all the key concepts about computer-controlled equipment. The key concepts to be investigated will include FX (force-displacement) control technology, pneumatic system control, fail-safe mechanics, and Graphical User Interface design. The primary aim of the project is to replicate and enhance the functionality, performance, and sensation of deadweight-based equipment. A further aim of the project is to investigate the feasibility of designing a compact retrofit-able pneumatic unit to replace the deadweights of existing standard exercise equipment. The computer control will be implemented on a "National Instruments PXI" computer featuring Data Acquisition and Control (DAQAC) capacity, and the software will be implemented using "LabVIEW 7.0', which is a graphic object-oriented computer language developed to facilitate hardware I software communications.

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