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Dissertations / Theses on the topic 'Prototype Testing'
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Corbetta, Mara. "Thermal Testing On Silicon Inner Tracker Prototype." Thesis, Uppsala universitet, Högenergifysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-315605.
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Risley, Allan David. "Developmental testing of a prototype all-reflection Michelson interferometer." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA269064.
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Jadhao, Sudhir Shriram. "Integrated bioinformatics prototype to improve blood type compatibility testing." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/235391/1/n10135651%2BSudhir%2BShriram%2Bjadhao%2BThesis%283%29.pdf.
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Blood transfusion is an essential cornerstone of haematological care, patients requiring repetitive transfusion remain at persistent risk of alloimmunisation due to the human blood group polymorphisms. The overall objective of the study was to provide a new basis for pre-transfusion testing by facilitating the accurate characterisation of an individual's complete blood group variant profile using NGS data of a large multi-ethnic cohort. To accomplish the objective, an automated bioinformatics platform was created to predict blood group antigen profiles and, using the platform, new polymorphisms of the blood group antigens in the Australian Caucasian descendent and Aboriginal Tiwi population were uncovered.
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Wang, Guojun. "Optimizing System Level Testing of Evolved Packet Gateway." Thesis, KTH, Kommunikationssystem, CoS, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122265.
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The goal of this thesis project is to improve industrial system testing efficiency. The thesis is mainly focused on the field of telecommunication. Testing is one of the most important steps before selling a product to customers and testing is also an important component of after sale maintenance. The work load for testers can be decreased and more projects could be carried out in parallel, if the testing efficiency can be improved. The thesis project is carried out within the Ericsson Product Development Unit (PDU) Packet Core System Test section. The goal is to improve the system testing efficiency of the Evolved Packet Gateway, as system testing has gradually become one of the bottle necks for the whole product release. Ericsson wants to accelerate its pace in releasing new products to the market and releasing new software to their customers. An initial investigation was made to get a clear view about how the complete system testing procedure is currently carried out and then, an analysis was made based on this information. Ideas were collected for a proposed new implementation and finally a prototype for the most useful ideas was developed and evaluated to show how the system testing efficiency can be improved. Finally, these ideas were proved to be valuable for Ericsson PDU Packet Core System Test section and two of them have been adopted and are already under developing.Målet med detta examensarbete är att förbättra effektiviteten inom industriell systemtestning. Avhandlingen är främst inriktad på området för telekommunikation. Testning är ett av de viktigaste stegen innan försäljning av en produkt till kunder och testning är också en viktig komponent under underhållsfasen. Genom att förbättra effektiviteten i testerna kan arbetsbelastningen för testare minskas och flera projekt genomföras parallellt. Examensarbetet har utförts inom Ericssons produktutvecklingsenhet (PDU) Packet Core, avdelning System Test. Avhandlingens mål är att effektivisera systemtestning av Evolved Packet Gateway (EPG), eftersom systemtest gradvis blivit flaskhalsen för hela produktens release. Ericsson vill påskynda takten som de släpper nya produkter på marknaden och ny mjukvara till sina kunder. En första undersökning gjordes för att få en tydlig bild av hur systemtest utförs för närvarande och därefter, gjordes en analys baserat på denna information. Idéer samlades in för att föreslå en ny implementering och slutligen utvecklades en prototyp av en specifik idé och den harutvärderats för att visa hur effektiviteten hos systemtest kan förbättras. Slutligen, var dessa idéer visade sig vara värdefullt för Ericsson PDU Packet Core System Test avsnitt och två av dem har antagits och håller redan på att utveckla.
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Volland, Kirk N. "Design, construction and testing of a prototype holonomic autonomous vehicle." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FVolland.pdf.
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Thesis (M.S. in Applied Physics)--Naval Postgraduate School, December 2007.Thesis Advisor(s): Harkins, Richard. "December 2007." Description based on title screen as viewed on January 24, 2008. Includes bibliographical references (p. 189-192). Also available in print.
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Johnson, Eric (Eric M. ). "Self-installation of drip irrigation emitters for prototype emitter testing." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105700.
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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.Cataloged from PDF version of thesis.
Includes bibliographical references (page 31).
In this thesis, I tested methods of adhering factory-made drip emitters to the interior of short segments of piping. Different types of adhesive and pipe material combinations were tested, and I selected three combinations for further testing. Performance similar to factory-installed drip emitters was achieved at low pressure, but the necessary watertight seals repeatedly burst at higher water pressures. Alterations to the drip emitter and installation procedure are recommended to increase reliability and resilience of the installation.
by Eric Johnson.
S.B.
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Johansson, Magnus. "Project Solaris – Construction of Solar Powered UAV Prototype." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-14012.
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Abstract To control an un-swept flying wing is problematic in some ways. One of the problems is that when the wing experiences a disturbance in yaw, it does not, since it has no tail, generate any torque in the opposite direction as a plane with a vertical stabilizer does. This thesis is foremost aimed at exploring one particular solution to this problem. One approach to this problem is to place the motors out on the wing and differentiate the thrust, to achieve the same torque as splitted elevons or a vertical stabilizer does. This is what NASA used on the flying unmanned wing HELIOS. Reducing the thrust on the right set of engines, and increasing the thrust on the left side can mean that the combined thrust is unchanged. And thus more fuel efficient, and increases endurance. This project’s main goal has been to construct a half scale model of the school project flying wing Solaris, and to configure a control system for the differentiated thrust as used on Helios. Thereafter conduct flight testing and evaluate the controllability of the wing in a number of flight conditions, this to get a sense of the wings characteristics and which parameters one should adjust to get the best controllability as possible. After numerous adjustments and test flights it was concluded that it is possible to construct and fly a wing in this configuration, with relatively simple means, with satisfactory results. That the torsional rigidity has great influence on the controllability were evident after the test flights. After redistribution of the components on the wing the conclusion could be made that the dihedral could be held within the structural limit of the wing. The results of this thesis will contribute to the project Solaris at Mälardalens University in Västerås, Sweden. The project was carried out at Mälardalens University. The test flights were conducted at the former Air Force base F-15 Flygstaden and Mohed in Söderhamn, Hälsingland.Solaris
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Ghirlanda, Simone L. "Prototype and Testing of a MEMS Microcooler Based on Magnetocaloric Effect." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3890.
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This thesis documents the work and research effort on the design, fabrication and testing of a magnetocaloric MEMS microcooler, focusing on the testing of the microcooler at low magnetic fields. The phenomenon of magnetocaloric effect (MCE), or adiabatic temperature change, which is obtained by heating or cooling magnetic materials due to a varying magnetic field, can be exploited in the area of magnetic refrigeration as a reliable, energy-efficient cooling system. In particular, its applications are being explored primarily in cryogenic technologies as a viable process for the liquefaction of hydrogen. The challenge for magnetic refrigeration is that the necessary MCE is most easily achieved with high magnetic fields (5-6 Tesla) provided by superconducting magnets. However, a significant magnetocaloric effect can be exhibited at lower magnetic fields (1-2 Tesla) by carefully controlling initial temperature conditions as well as by selecting, preparing and synthesizing the optimal fabrication process of Silicon (Si) wafers. A microcooler was integrated based on previous works of others and tested. Finally, testing of the magnetocaloric effect was conducted and results analyzed. Experimental results in these domains demonstrate that magnetic refrigeration can be part of the best current cooling technology, without having to use volatile, environmentally hazardous fluids. The MEMS magnetocaloric refrigerator demonstrated a ~ -12°C change in the temperature of cooling fluid at a magnetic field of 1.2 T.
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Auel, John B. "Design and testing of a prototype in-line chip quality monitor." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06102009-063437/.
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Ottosson, Jan Benjamin. "Development and Evaluation of a Small Punch Testing Device." Thesis, Linköping University, Engineering Materials, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-59285.
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Parriott, Gary R. Davis David Scott. "Developing and testing of a prototype electro-optical phase encoded position transducer /." Monterey, Calif. : Naval Postgraduate School, 1991. http://edocs.nps.edu/npspubs/scholarly/theses/1992/Dec/92Dec_Parriott.pdf.
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Parriott, Gary R. "Developing and testing of a prototype electro-optical phase encoded position transducer." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/30590.
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A proof-of-concept experimental validation of a proposed idea for a prototype electro-optical phase encoded position transducer was conducted. The intensity of two IR LED beams were modulated sinusoidally at frequency omega, with a 90 degree temporal phase difference. They further modulated by a pair of sinusoidal optical encoding masks with 90 degree spatial phase difference. The mask pair was mounted on a mechanical tage and translated perpendicular to the beam axis. The sum of the two signals produced by this electro-optical configuration constituted another sinusoid at temporal frequency omega, whose phase was proportional to mask position. Although small deviations from ideal behavior were observed, the validity of the technique has been established incontestably.
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Countouris, Paula Marie. "Design, construction, and testing of a prototype robotic leg for controls experiments." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74432.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 37).
The complex underactuated legs used in the FastRunner robot, designed by the Florida Institute for Human and Machine Cognition, are designed with multiple linkages and nonlinear springs to exploit the natural dynamics of the system in order to achieve extraordinary agility and efficiency. One way to control such a complex, underactuated system is to use a model-based control design approach based on robust nonlinear control. To develop a platform to test this physics based control design on the FastRunner leg, a free swinging underactuated robot leg was designed and constructed for benchtop controls experiments. A stand with motor to actuate the leg and a basic control system for the bench-top setup were also designed and implemented. To verify the performance of the leg, actuation, and the control setup, an open-loop step response, sinusoidal response, and chirp response were executed on the prototype leg setup. Future work includes redesign of the system electronics, construction of a system of equations that describes the leg, and completion of system identification.
by Paula Marie Countouris.
S.B.
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Meredith, James D. C. (James Douglas Charles). "Design, construction and testing of an ocean renewable energy storage scaled prototype." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70437.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 95-96).
The concept for a new form of pumped storage hydro is being developed within the Precision Engineering Research Group at MIT: the Ocean Renewable Energy Storage (ORES) project. Large, hollow concrete spheres are created, fitted with a reversible pump-turbine and deployed to the sea floor. Water is then allowed to flow through the turbine, into the sphere, to produce power and power is stored back in the device by running the turbine backwards as a pump and evacuating the sphere. The first prototype of that concept is presented here. A land-based system was designed, built and tested to demonstrate its ability to store energy and test the viability of the manufacturing methods planned. The device was successfully built and cycled, storing 2Wh of energy. The round-trip efficiency of the device was severely affected by the low efficiency of the scaled down rotating equipment. It was also found that casting a monolithic sphere is preferable to assembling multiple pieces and that the interior of the sphere should be maintained at atmospheric pressure via a vent line.
by James D. C. Meredith.
S.M.
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Barhale, Koushik R. "Design and testing of a prototype gripper for a wheelchair mounted robot." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000564.
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Cabra, Henry. "Design, Simulation, Prototype, and Testing of a Notched Blade Energy Generation System." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/4992.
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This dissertation addresses the design, simulation, prototype, and test of a new energy generation system, which transforms rotational motion into electricity by the use of an innovative turbine-generator. The system is divided in two assembled subsystems that interact to finally transform kinetic energy into electricity. The first subsystem is a miniaturized notched impulse turbine system, and the second one is a millimeter permanent magnet generator (PMG) assembled into the turbine.
The conversion of biomechanical energy to electric energy, using clean and free energy produced by a living organism, is being increasingly researched [1]-[11]. These are all viable options, but advantages and disadvantages of each type of energy conversions should be evaluated individually to determine key factors such as efficiency as an energy harvesting method, the implementation cost, size, and the final applications where they will be used.
Through this dissertation, a new option of green energy conversion is made available; focusing on the use of turbines to extract energy from microfluidics, with diverse application in biomedical, military/aerospace, and home areas. These systems have the potential of converting mechanical movement energy, and hydraulic energy into electric energy that may be sufficient for self-powering nano/micro devices and nano/micro systems. A flow, with constant pressure, a magnetic generator, and a novel impulse turbine design are combined to form a self-contained miniaturized generator system. The turbine consists of two main parts: a bearingless rotor and the enclosure or casing; while the miniaturized magnetic generator is a permanent magnet brushless machine, consisting of permanent magnets in a ring configuration and radial coils. A permanent pressure, from microfluidic pressure system, is the force used to move the blades. This rotational motion of the turbine is transformed into electricity using magnetic induction, formed by permanent magnets on the rotor and nine coils fixed in the holder of the turbine. The electricity is generated when the magnetic field rotates and moves past the conductor, which induces a current according to Faraday's Law [1-3]. The system has potential uses not only in medical equipment, but in automotive applications, home appliances, and aquatic and ventilation systems.
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Moloney, Shane Richard. "The design, build and preliminary testing of a ballast water treatment plant prototype." Thesis, University of Newcastle Upon Tyne, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580318.
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Ballast water is indispensable for maritime trade as it is required to operate ships successfully and safely through its various evolutions over the course of a voyage. Ships taking on ballast water also take on the marine organisms present in the water such as phytoplankton, zooplankton and micro organisms. It is estimated that 10 billion tonnes of ballast water is transferred around the world annually and ballast water has been identified as one of the key vectors for the introduction of non-indigenous species The introduction of non-indigenous species can have critical economic, industrial, human health and ecological consequences. Invasive aquatic species are classified as one of the four greatest threats to the world's oceans. The preferred solution is to treat or manage the water itself. The International Maritime Organisation's Ballast Water Management Convention details a performance standard to which ballast water must be treated to. The variability of seawater around the world (e.g. salinity, turbidity) as well as the organisms that are required to be inactivated makes achieving this performance standard technologically challenging. The primary aim of the European Union, Framework Programme 6 funded Sustainable Ballast Water Treatment Plant (BaWaPla) project was "To provide a safe, economically viable, and technically competitive alternative for onboard ballast water management". The concept was to create a hybrid treatment plant utilising filtration, ultraviolet light and an electrochemically generated chlorine based active substance. To investigate the feasibility of the system concept a prototype was developed and tested. The development of the design was aided by the application of engineering design methods. These methods guided the decision making process and made the reasoning behind these decisions traceable. 3-dimensional surface modelling software was used to develop the engineering design, and to reduce the time required for design and construction. The prototype was tested to measure its biological efficacy. The electrochemical system was not included in these tests. Testing was conducted using sea water from the North Sea to mimic the conditions encountered by ships pumping ballast water on board. The results of the tests were inconclusive primarily due to the low number of organisms present in the water. This is believed to be a result of the tests being conducted in winter. However, the data and subsequent statistical analysis indicate that the treatments have an effect on the organisms present and encourage further testing.
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Lemanski, Jennifer. "CRYOGENIC SHAPE MEMORY ALLOY ACTUATORS FOR SPACEPORT TECHNOLOGIES: MATERIALS CHARACTERIZATION AND PROTOTYPE TESTING." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2779.
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Shape memory alloys (SMAs) possess the unique ability to change their shape by undergoing a solid-state phase transformation at a particular temperature. The shape change is associated with a large strain recovery as the material returns to its "remembered" shape. Their ability to act as both sensor and actuator has made them an attractive subject of study for numerous applications. SMAs have many characteristics which are advantageous in space-related applications, including generation of large forces associated with the strain recovery, smooth and controlled movements, large movement to weight ratio, high reliability, and spark-free operation. The objective of this work is the further development and testing of a cryogenic thermal conduction switch as part of NASA funded projects. The switch was developed to provide a variable conductive pathway between liquid methane and liquid oxygen dewars in order to passively regulate the methane temperature. Development of the switch concept has been continued in this work by utilizing Ni-Ti-Fe as the active SMA element. Ni-Ti-Fe exhibits the shape memory effect at cryogenic temperatures, which makes it well suited for low temperature applications. This alloy is also distinguished by an intermediate phase change known as the rhombohedral or R-phase, which is characterized by a small hysteresis (typically 1-2 deg C) and offers the advantage of precise control over a set temperature range. For the Ni-Ti-Fe alloy used, its thermomechanical processing, subsequent characterization using dilatometry and differential scanning calorimetry and implementation in the conduction switch configuration are addressed. This work was funded by grants from NASA KSC (NAG10-323) and NASA GRC (NAG3-2751).M.S.M.S.E.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Materials Science and Engineering
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Konda, Sashi Kumar. "Design and testing of a marsupial/companion robot prototype for a powered wheelchair." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000490.
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Kuyumcuoglu, Gabriel, and Sebastian Lagerström. "Utveckling av testmaskin för teknik i skor." Thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191499.
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RECCO AB är ett företag som utvecklar räddningssystem för lavinolyckor. Systemet fungerar genom en RFID tag (reflektor) och en detektor. Detektorn känner av reflektorn som sitter på jackan, hjälmen, skon eller pjäxan upp till 200 meters avstånd eller 30 meter genom snön. Detektorn används av erfaren lavinräddningspersonal. RECCO ska implementera reflektorer i vandringsskor för att söka efter människor som är i skogen och uppe i bergen. Syftet med examensarbetet är att utveckla en skotestmaskin som ska kunna testa livslängden på reflektorn. Bakgrundsundersökningen genomfördes genom en informationssökning om biomekanik i ben och fot, olika benrörelser som kan påverka skon, olika typer av vandringsskor och olika skotestmaskiner som finns ute på marknaden idag. Genomförandet av projektet inleddes genom ett test för att undersöka hur stora krafterna är som påverkar reflektorn i skon. Testet genomfördes med en tryckkänslig sensor och en Arduino UNO. Den maximala kraften på reflektorn blev 7.1 N. Därefter gjordes en brainstorming som resulterades i sju olika koncept. Koncepten vägdes emot varandra med hjälp av en PUGH matris, som resulterade i att ett koncept valdes att gå vidare med. Analysen av konceptet genomfördes med Solidworks, Matlab och ADAMS. Med SolidWorks gjordes detaljerade ritningar och ett montage av modellen. Med Matlab gjordes beräkningar på lagerhus, glidlager, kulbussning och motor. ADAMS användes för att simulera rörelsen och för att verifiera Matlab-beräkningarna. Resultatet av slutprodukten blev lyckat. Maskinens rörelse och de påverkande krafterna på reflektorn efterliknar testet som genomfördes i början av projektet. Eventuella förbättringar som kan utföras är inköp av en starkare motor för att uppnå en mer konstant hastighet eller ett svänghjul för att minska påfrestningarna på motorn. För vidare arbete på slutprodukten kan RECCO programmera en strömbrytare som stänger av motorn vid uppnått antal cykler.RECCO is a company that develops rescue system for avalanche accidents. The system works by a RFID tag (reflector) and a detector. The detector senses the reflector that is attached to jackets, helmets, shoes and ski boots up to 200 meters or 30 meters through the snow. The detector is used by experienced avalanche rescue groups. RECCO will implement reflectors in hiking shoes to search for people who are in the woods and in the mountains. The purpose of this master theses is to develop a shoe test machine to be able to test the service life of the reflector. The background study was performed by an information search about the biomechanics of the leg and foot, different leg movements that may affect the shoe, different types of hiking shoes and several shoe test machines available on the market today. The implementation of the project began with a test to examine how large the forces are on the reflector acting in the shoe. The test was conducted by a pressure sensitive sensor connected to an Arduino UNO. The maximum force on the reflector was 7.1 N. This was followed by a brainstorming session that resulting in seven different concepts. The concepts were then evaluated against each other using a PUGH matrix, which resulted in a concept for further development. The analysis was conducted using SolidWorks, Matlab, and ADAMS. Detailed drawings and assembly of the model were made using SolidWorks. The calculations were made on bearing housings, plain bearings, linear ball bearing and the motor using Matlab. ADAMS was used to simulate the movement and to verify the Matlab calculations. The result of the final concept was succeeded. The machine's movement and the influencing forces on the reflector mimic the performed test that was made at the beginning of the project. Improvements that can be done is to change to a more powerful motor to achieve a more constant speed or a flywheel to reduce the strain on the motor. For further work RECCO can program a switch that turns off the motor when the number of cycles are achieved.
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Jaquier, Thomas. "Hydroliennes à flux transverse : développement d'un prototype HARVEST en canal." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENI059/document.
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Les hydroliennes font partie des dispositifs innovants d’énergie qui pourraient contribuer à ladiversification de la production d’électricité d’origine renouvelable. Les travaux réalisés dans le cadrede cette thèse avaient pour objet l’hydrolienne HARVEST, type d’hydrolienne constitué de turbines àflux transverse carénées ; il s’agissait, à partir d’un prototype complet, d’analyser l’interaction desdifférents phénomènes physiques mis en jeu et étudiés séparément jusqu’à lors, de valider les outilsnumériques développés au laboratoire LEGI et plus généralement de démontrer l’intérêt du concept.Ce prototype a été conçu, fabriqué, installé et testé dans un canal EDF à ciel ouvert situé près deGrenoble. Les résultats obtenus sont très encourageants en matière de performance énergétique, decomportement mécanique et de maîtrise de l’impact sur le cours d’eau. Ce mémoire se clôt par desconclusions d’ordre technologique des travaux présentés et sur une ouverture sur les possibilitésd’industrialisation du conceptInstream water turbines belong to the innovative energy which could contribute to the diversificationof renewable power sources. Works done during this thesis aims at contributing to the overallobjective of developing the HARVEST turbine, a cross flow ducted turbines concept, in realizing andtesting an entire prototype to demonstrate the value of the concept, to understand physicalphenomena involved and to validate the numerical applications developed in the laboratory LEGI.This prototype has been put and tested in an EDF open channel near Grenoble. The results are veryencouraging in terms of energy performance, mechanical behavior and control of the impact on thewater channel. This memory is ending with technological conclusions on the presented work andopenings on the possibilities of industrialization of the concept
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Bester, Jacques. "Ballistic and dynamic mechanical characterisation of 5t prototype cast of a new locally developed armour steel alloy." Thesis, University of Pretoria, 2017. http://hdl.handle.net/2263/64044.
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The ballistic performance was investigated with rigorous testing of the new armor steel alloy, a tempered variant and a benchmark material. Mechanical testing included Hopkinson pressure bar tests, high temperature, notched tests and standard quasi-static tensile tests. The combination of a commercial prototype cast steel and ballistic testing with NATO standard soft projectiles allowed a uniquely practical perspective when comparing results. The ballistic test procedure reported the same minimum thickness values, for STANAG level 1 kinetic energy threats, than the suggested values of the manufacturer and comparison to the new alloy was thus established. Dynamic material characterization is only accurate within the testing range. Using a single material model to predict critical strength and failure over large strain-rate and temperature ranges is only possible if the material response is consistent. A few scaling problems during specimen testing resulted in a challenging data set with subsequent numerical characterization difficulty. Ballistic performance was however found to correlate well with high strain-rate tensile tests.Thesis (MEng)--University of Pretoria, 2017.
Materials Science and Metallurgical Engineering
MEng
Unrestricted
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Huguenin, Blake D. "Design, development and testing of a prototype optical system for a next generation multiplexed imager." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23852.
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Gomes, Ashen. "Testing and analysis of an intelligent electronic device (IED) prototype for MTDC overhead line application." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286780.
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A key problem faced with the implementation of a multi-terminal direct current (MTDC) grid is fault mitigation. One method extensively researched in mitigating a fault in MTDC is to use protection intelligent electronic devices (IEDs) and fast direct current circuit breakers (DCCBs). The IEDs are able to detect and identify faults with fault algorithms. In this study overhead line MTDC systems are investigated to identify the best algorithm for overhead line (OHL) MTDC fault mitigation and the resulting algorithm is tested on a protection IED. Three models: short line, long line and combined line models are developed with varying DC line lengths on the software PSCAD and are analysed under line to line (L-L) and line to ground (L-G) faults with multiple fault impedance at a variety of fault locations. The voltage derivative algorithm has performed the best in detecting and identifying faults under OHL conditions. However, its performance declines with the increase of length of DC lines of the MTDC. Therefore, transient based algorithms were also tested. They are a better _t for remote faults compared to voltage derivative algorithms. However, they perform poorly for close faults. The critical threshold for fault detection is obtained through the algorithms and are implemented to the IED. A waveform generator will simulate faults and the IED is tested with the critical threshold obtained. The IED performed as expected and produced results similar to the software analysis. The critical threshold obtained through the algorithm was applicable to all DC lines of MTDC grid. Wide adaptation of MTDC is expected and this will increase complexity in the grid network and modelling of it. Therefore, new lines implemented to MTDC grids may have to identify their critical protection threshold with simplified MTDC grid models. Evidence towards the possibility of modelling a point-to-point high voltage direct current (HVDC) system to identify threshold values can be obtained from this study as the results suggest that the maximum derivative values are highest for internal faults rather than external faults.Ett centralt problem inför implementeringen av ett multiterminalt DCnät (MTDC-nät) är feldetektering och bortkoppling av fel. En metod som har undersökts mycket för att detektera och bortkoppla ett fel i MTDC-nät är att använda en skydds-IED (intelligent electronic device) och likströmsbrytare (eng: direct current circuit breakers, DCCBs). En IED kan upptäcka och identifiera fel med hjälp av skyddsalgoritmer. Denna studie syftar till att identifiera den bästa algoritmen för feldetektering i luftledningar i MTDC-nät och den resulterande algoritmen testas på en skydds-IED. Tre linjemodeller: korta, långa och kombinerade implementeras i programvaran PSCAD och simuleras under pol-pol-fel och pol-jord-fel med era felimpedanser på en mängd olika felplatser. Spänningsderivataalgoritmen har fungerat bäst för att upptäcka och identifiera fel i luftledningar. Men dess prestanda minskar med längden hos DC-linjernas för MTDC. Därför testades också transientalgoritmer. De passar bättre för fjärrfel jämfört med algoritmer baserade på spänningsderivata. De fungerar dock dåligt för närliggande fel. Den kritiska tröskeln för feldetektering erhölls genom algoritmerna och implementerades i IEDn. En vågformgenerator simulerade fel och IEDn testades med den kritiska tröskel som erhölls. IEDn fungerade som förväntat och producerade resultat som liknar programvarans analys. Den kritiska tröskeln som erhölls genom algoritmen var giltig för alla DC-linjer i nätet. Bred anpassning av MTDC förväntas och detta kommer att öka komplexiteten i nätverket och dess modellering. Därför kan nya linjer implementerade för MTDC-nät behöva identifiera dess kritiska skyddströskel utan att modellera hela nätet. Denna studie indikerar att det är möjligt att modellera ett punkt-till-punkt HVDC-system för att identifiera tröskelvärden för ett MTDC-nät eftersom resultaten antyder att de maximala derivatavärdena är högst för interna fel snarare än för externa fel.
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Streeter, Elaine. "Computer-aided music therapy evaluation : investigating and testing the music therapy logbook prototype 1 system." Thesis, University of York, 2010. http://etheses.whiterose.ac.uk/1201/.
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This thesis describes the investigation and testing of a prototype music therapy practice evaluation system: Music Therapy Logbook, Prototype 1. Such a system is intended to be used by music therapists as an aid to their existing evaluation techniques. The investigation of user needs, the multi-disciplinary team work, the pre-field and field recording tests, and the computational music analysis tests are each presented in turn, preceded by an in depth literature review on historical and existing music therapy evaluation methods. A final chapter presents investigative design work for proposed user interface software pages for the Music Therapy Logbook system. Four surveys are presented (n = 6, n = 10, n = 44, n =125). These gathered information on current music therapy evaluation methods, therapists‘ suggested functions for the system, and therapists‘ attitudes towards using the proposed automatic and semi-automatic music therapy evaluation functions, some of which were tested during the research period. The results indicate enthusiasm for using the system to; record individual music therapy sessions, create written notes linked to recordings and undertake automatic and/or semi-automatic computer aided music therapy analysis; the main purpose of which is to quantify changes in a therapist‘s and patient‘s use of music over time, (Streeter, 2010). Simulated music therapy improvisations were recorded and analysed. The system was then used by a music therapist working in a neuro-disability unit, to record individual therapy sessions with patients with acquired brain injuries. These recordings constitute the first music therapy audio recordings employing multi-track audio recording techniques, using existing radio microphone technology. The computational music analysis tests applied to the recordings are the first such tests to be applied to recordings of music therapy sessions in which an individual patient played acoustic, rather than MIDI, instruments. The findings prove it is possible to gather objective evidence of changes in a patient‘s and therapist‘s use of music over time, using the Music Therapy Logbook Prototype 1 system.
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Kahle, Matthew Gilbert. "Partially restrained composite connections : design and analysis of a prototype structure." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/20830.
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New, James Stephen Oliver. "The design, construction and hypervelocity impact testing of a prototype orbital debris and interplanetary dust detector." Thesis, University of Kent, 2018. https://kar.kent.ac.uk/68472/.
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The constant bombardment of millimeter and submillimeter interplanetary dust and orbital debris particles on spacecraft and other space assets leads to long term degradation of exposed surfaces and systems. In the past, post-flight surface analysis on the Space Shuttle provided regular data on these small particles in low Earth orbit. The accumulation of data provided by the characterisation of these particles is required for the development, and updating, of orbital debris environment models, which are essential to predict the conditions in space that can significantly a↵ect the design, operation and cost of spacecraft. Since the retirement of the Space Shuttle program in 2011, there has been very little new data generated. Consequently, there is now an increasing need for additional information on the characteristics of interplanetary dust and orbital debris for both commercial and research purposes. Dedicated dust detectors, rather than post-flight data collection from collision damage, have successfully demonstrated the potential for characterising particles in the past, and provide the most likely method of analysis going forward. However, current versions have a number of limitations and there is an opportunity to make significant advancements in the next generation of detectors. Designing, testing and analyzing improved detector systems was the primary focus of this research. Interplanetary dust and orbital debris properties of specific interest include; flux, size, velocity, trajectory, kinetic energy, density and mass. Although previously flown detectors are capable of measuring a number of these parameters, no previous detector has integrated the capacity to measure all of them simultaneously. This thesis describes concepts for a detector capable of collecting, processing and transmitting back the data for all of the parameters listed above and in real time, which is a significant advancement on current state-of-the-art detectors. Prototypes were designed incorporating selected adaptations of previous detectors, utilising the basic principle of sequential detection gates. Proof-of-concept experiments were conducted on the prototypes using the light gas gun at the University of Kent in order to replicate orbital impacts with simulated space particles in the laboratory. Algorithms written in Python were developed for the five subsystems to analyse data collected by PVDF sensors on each of the three detection gates, and to directly calcu- late the flux, velocity, trajectory, diameter and kinetic energy of particles interacting with the prototypes. In turn, these results were used to derive mass and density. The characteristics of particles calculated by the subsystems during the experiments were compared with their known properties in order to quantify the accuracy of each mea- surement. The velocity, trajectory and diameter calculations had an average confidence within 6.5%, 0.5% and 10.0%, respectively. Measurement of the kinetic energy was accurate to ⇠26.0 %, which is regarded as a significant step forward. Additionally, the experiments provided evidence that flux models can be accurately measured for par- ticles larger than 50μm. The prototypes designed and validated in this research can be used as templates for future detectors capable of providing real-time data on the characteristics of interplanetary dust and orbital debris. These data will contribute directly to the design of future instrumentation and assist the development of more detailed environment models with both commercial and research applications.
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Priegue, Molinos Luis. "Optimisation of a vertical axis tidal turbine and testing of a prototype in an unblocked environment." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/100413/.
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Vertical Axis Tidal Turbines (VATTs) have become the subject of increased interest in recent decades, but the development of this type of hydrokinetic turbine has faced several challenges that have not yet been overcome. The influence of rotor parameters on turbine performance is one of these challenges. No axiom can be found in the literature about the effect of these parameters on the turbine behaviour, and sometimes research projects even show contradictory results. As a consequence, parameters that define turbine rotors may differ substantially from each other but have performed similarly in terms of efficiency. In relation to this matter, experimental modelling has been carried out in the School of Engineering facility at Cardiff University. Using small-scale set-ups, experimental testing provided useful and reliable information that shed light into these design uncertainties. Blade roughness has been found to have a great impact on the turbine behaviour, and the influence of this parameter has been tested and analysed in depth in a subsequent chapter of the thesis. Apart from the parametric analysis, a mechanical and an electrical system were utilised for the turbine set up. Thanks to these different systems of energy conversion, it was possible to compare the extracted power and to evaluate their inherent losses. Electricity was generated from the electrical approach, which was very useful in order to accurately evaluate the turbine efficiency. Taking into account the results coming from physical testing, an optimised prototype of a VATT was designed and manufactured; estimated to be a 1:15 scale device. Not just the rotor but the whole super structure was built, in order to analyse both the efficiency and the performance of the rotor, as well as the 1 structural response of the entire device. Performing experimental testing without removing the effect that a blocked channel provides to the turbine rotation is no trivial issue, and intermediate scale tests will become a fundamental step for recognition of the technology. Aiming to achieve a reliable source of information, the manufactured tidal turbine prototype has been tested in a water sports centre (White Water Rafting Centre, Cardiff). There is a clear lack of information in the literature about testing tidal turbines on an intermediate scale, and the chance to test a tidal turbine is a very valuable opportunity. The experiments were accomplished in a very similar environment to a real tidal stream, but with the related advantages of complete control over the turbine deployment. Thus, these experiments are considered to provide very useful data for scientific knowledge and also the tidal stream energy sector. Finally, the study of the hydrodynamic turbine wake in small scale was carried out. Not only velocity measurements were collected at the turbine operating point, but also water elevations upstream and downstream were measured by using depth gauges based on water conductivity. At the time of writing and to the best of the authors’ knowledge, not many research articles have studied the wake characteristics of vertical axis tidal stream turbines, and none have used this equipment. The quality of the data is deemed to be excellent and the following process of the information described perfectly the near and far wake. This could be extremely useful for a future scale-up of the turbine, and the development of an array.
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TADESSE, ADDISHIWOT. "Efficient Bare Metal Backup and Restore in OpenStack Based Cloud InfrastructureDesign : Implementation and Testing of a Prototype." Thesis, Blekinge Tekniska Högskola, Institutionen för kommunikationssystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13727.
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Middleton, Mark Eliot. "Design, development and testing of a prototype precision angular positioning control system for a next generation multiplexed imager." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA292585.
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Thesis (M.S. in Physics) Naval Postgraduate School, December 1994.Thesis advisor(s) David Scott Davis, Anthony A. Atchley. "December 1994." Includes bibliographical references. Also available online.
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Persson, Malin. "Designing an interface for creating report templates in a test management tool using competitive analysis and prototype testing." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-100235.
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Test management tools are used to structure and manage test processes in software and hardware development. The purpose of this project was to design a test report template editor for a test management tool with a focus on usability. Requirements analysis was made using domain analysis and stakeholder interviews. In the design phase, usage scenarios were developed as well as two paper prototypes. A final paper prototype was created based on feedback from the stakeholders. TDR reports is a WYSIWYG editor that provides a set of features that allow users to choose which information to include in their test reports. A basic usability evaluation was performed at the end of the study that indicated that the initial requirements were fulfilled.
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Fandrem, Knut. "Condition Assessment of Line Connectors by Current Pulse Measurements : Design and Testing of a LightweightCurrent Pulse Source Prototype." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-27237.
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This thesis presents and discusses the development, design and testing of a lightweight current pulse source prototype used for condition assessment of line connectors. The thesis is a continuation of a student project conducted in the fall semester of 2014 with the title "Condition Assessment of Line Connectors by Current Pulse Measurements - Effect of Reduced Pulse Rise Time And Connection Cable Cross Section". The student project looked into how weight and size could be removed from the present pulse source design, both by a reduced capacitor bank and by reduced connection cable cross section. The results from this project lead to the development of the lightweight pulse source prototype.The design and development is divided into three sections. Initially, the overall idea and generalization of the design is presented and discussed. Secondly, based on this conceptualization the design is broken down to each major component. These components were the battery, thyristor, capacitor bank, microcontroller, DC-DC Converter, and user interface. Their function and design criteria are presented and discussed in the thesis. The thesis also presents the circuit schematics of all the components designed specially for the prototype. Finally, the design is summarized and its weight and size compared to the present pulse source design. The measurements show that new pulse source prototype weights 7.6 kg compared to the 35 kg of the old design and is 47 dm^3 smaller. Note that the weight is measured without the connection cords and measurement equipment. enlargethispage{baselineskip}One of the major differences beside the size and weight is that the present pulse source uses a hardware based sequence control, while the prototype utilizes a microcontroller. This allows a much more flexible system since the behavior of the sequence control can be altered by rewriting the script. The microcontroller and script are presented in detail in the thesis and in the appendix.To verify the design, and to look into how the prototype operates during actual condition assessment measurements, a total of thirteen connectors were assessed. Three of these had an already known condition, while for the rest no prior condition assessment existed. The three connectors with a known state showed that it was possible to reproduce the results from the prior measurements using the pulse source prototype. The ten final connectors were meant to increase the number of measurements to see how the prototype handled during actual assessment tests. These measurements show that the prototype only needed a few alterations to it design to operate satisfactory. These alterations are presented and discussed in the thesis, while the condition assessment of all the connectors is presented in the appendix.In addition to the condition assessment measurements there were also conducted two separate experiments to define the battery capacity and setpoint accuracy of the prototype. The battery capacity test revealed that the battery capacity of the prototype is sufficiently large to supply the unit with power during continuous operation for at least four hours and ten minutes, and deliver 500 consecutive shots. The setpoint accuracy test indicated that the prototype's control sequence was able to reproduce the same current amplitude for the same setpoint with a deviation of only 26.4 A.All the tests performed on the prototype show that it works and operates as intended. Tests have shown that the prototype is able to produce and reproduce current pulses accurately up to and above 6000 A, and that the microcontroller based sequence control functions as intended.
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Friedman, Alex Matthew. "An Approach to Incorporate Additive Manufacturing and Rapid Prototype Testing for Aircraft Conceptual Design to Improve MDO Effectiveness." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/73656.
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The primary objectives of this work are two-fold. First, additive manufacturing (AM) and rapid prototype (RP) testing are evaluated for use in production of a wind tunnel (WT) models. Second, an approach was developed to incorporate stability and control (SandC) WT data into aircraft conceptual design multidisciplinary design optimization (MDO). Both objectives are evaluated in terms of data quality, time, and cost.
FDM(TM) and PolyJet AM processes were used for model production at low cost and time. Several models from a representative tailless configuration, ICE 101, were printed and evaluated for strength, cost and time of production. Furthermore, a NACA 0012 model with 20% chord flap was manufactured. Both models were tested in the Virginia Tech (VT) Open-Jet WT for force and moment acquisition. A 1/15th scale ICE 101 model was prepared for manufacturing, but limits of FDM(TM) technology were identified for production.
An approach using WT data was adapted from traditional surrogate-based optimization (SBO), which uses computational fluid dynamics (CFD) for data generation. Split-plot experimental designs were developed for analysis of the WT SBO strategy using historical data and for WT testing of the NACA 0012. Limitations of the VT Open-Jet WT resulted in a process that was not fully effective for a MDO environment. However, resolution of ICE 101 AM challenges and higher quality data from a closed-section WT should result in a fully effective approach to incorporate AM and RP testing in an aircraft conceptual design MDO.Master of Science
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Durak, Tolga. "Design and Testing of an Adult Age-Independent Online Needs Assessment Tool and Development of Adult Age-Independent Design Guidelines." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/33623.
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This thesis addressed the following research activities: (1) Developing and evaluating the usability of an adult age-independent online assessment tool that includes health care related content and is centered on the needs and capabilities of both older and younger users and, (2) Developing adult age-independent design guidelines. An online tool, which was developed for a previous study, was revised according to the results of the previous study and preliminary development activities based upon the user requirements of older adults (50 years or older). The online assessment tool was also tested with younger adults (between 18 and 35 years of age) to determine the differences between younger and older adults. Subsequent to these activities, a final tool that captured the needs of both older and younger adults was developed and evaluated for usability. According to the usability testing results, a design guideline set for an adult age-independent Online Needs Assessment Tool was developed and revisions were conducted in order to develop the final Online Needs Assessment Tool.
The results of these studies, along with the tools developed, provide online survey and interface designers information on older and younger adult user requirements. They provide a knowledge resource for older and younger user healthcare information needs and information about the usability of one online assessment tool to accommodate both older and younger adult users. They also assist interface designers to proliferate and to facilitate more rapid application developmentMaster of Science
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Chen, Anyuan. "Investigation of Permanent Magnet Machines for Downhole Applications : _ Design, Prototype and Testing of a Flux-Switching Permanent Magnet Machine." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11829.
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The current standard electrical downhole machine is the induction machine which is relatively inefficient. Permanent magnet (PM) machines, having higher efficiencies, higher torque densities and smaller volumes, have widely employed in industrial applications to replace conventional machines, but few have been developed for downhole applications due to the high ambient temperatures in deep wells and the low temperature stability of PM materials over time. Today, with the development of variable speed drives and the applications of high temperature magnet materials, it is increasingly interesting for oil and gas industries to develop PM machines for downhole applications. Recently, some PM machines applications have been presented for downhole applications, which are normally addressed on certain specific downhole case. In this thesis the focus has been put on the performance investigation of different PM machines for general downhole cases, in which the machine outer diameter is limited to be small by well size, while the machine axial length may be relatively long. The machine reliability is the most critical requirement while high torque density and high efficiency are also desirable. The purpose is to understand how the special constraints in downhole condition affect the performances of different machines. First of all, three basic machine concepts, which are the radial, axial and transverse flux machines, are studied in details by analytical method. Their torque density, efficiency, power factor and power capability are investigated with respect to the machine axial length and pole number. The presented critical performance comparisons of the machines provide an indication of machines best suitable with respect to performance and size for downhole applications. Conventional radial flux permanent magnet (RFPM) machines with the PMs on the rotor can provide high torque density and high efficiency. This type of machine has been suggested for several different downhole applications. Flux-switching PM (FSPM) machines, which have the PMs located on the stator and are therefore more reliable, can theoretically also exhibit high torque density and relatively high efficiency. This thesis has put an emphasis on studying this type of machine. Two FSPM machines have been investigated in detail and compared by analytical method, FEM simulation and prototype measuremens. Their operating principle and important design parameters are also presented. A lumped parameter magnetic circuit model for designing a high-torque FSPM machine is newly introduced and the designed machine is verified by FEM simulations. A prototype machine with an outer diameter of 100 mm and an axial length of 200 mm is built in the laboratory and tested at room temperature. Based on that, the machine performance at an ambient temperature of 150°C is also predicted. The results show that the FSPM machine can provide a high torque density with slight compromise of efficiency and power factor. Choosing a proper machine type is significantly dependent on the application specifications. The presented results in this thesis can be used as a reference for selecting the best machine type for a specific downhole case.
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Puchta, Daniel. "3D tiskárna FDM se zabudovaným podavačem materiálu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417722.
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This thesis deals with mechanical design of FDM 3D printer with a built-in material feeder with monitoring of remaining material. The aim of this thesis is designing the FDM 3D printer with minimum print volume of 200x200x200 mm and with usage of measured data for optimising the 3D printing process. This 3D printer is targeted to the non-experienced users, so the emphasis was on ease of use and reliability of the printer. Despite the fact that it is an innovative design solution, the suitability of the design was verified experimentally as part of this thesis. The choice of the material feeder design, which is essential for the presented thesis, was justified by the realization of prototypes of two suitable designs, from which the optimal solution was chosen. The knowledge obtained from testing the prototypes was then used for the final design of 3D printer. The usage of data for optimization of the printing process is realized by a C++ compatible source code that is a part of this thesis.
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Kašparová, Nela. "Uživatelské rozhraní pro komunikaci s domácím mobilním robotem." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2017. http://www.nusl.cz/ntk/nusl-363814.
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In this master thesis are presented design and testing processes of communication between elderly and single-purpose robot. At the beginning design and architecture of the system for testing are described. Communication understandability was checked in interviews with nineteen people. Other opinions on usability or affordability of automatic device, which is used for picking and lifting objects from the ground, are presented in this thesis. Results from questionnaires and measurements showed that working with the robot is pleasant and understandable. Even senior is able to learn effective communication with this device. The main finding is that even robot communicates through nonverbal sounds, is easy to understand it. Choosing of sound set has no influence on communication understandability.
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Папка, Я. В. "Комп`ютерна система діагностування психiчного стану людини." Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/23061.
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Папка, Я. В. Комп`ютерна система діагностування психiчного стану людини : випускна кваліфікаційна робота : 123 "Кoмп’ютepнa iнжeнepiя" / Я. В. Папка ; керівник роботи В. А. Бичко ; НУ "Чернігівська політехніка", кафедра iнфopмaцiйниx тa кoмп’ютepниx cиcтeм. – Чернігів, 2021. – 61 с.Об’єктом кваліфікаційної роботи бакалавра є розроблення концепції діагностування депресивного стану людини за допомогою відомих опитувальників з додаванням можливості розпізнавати образ опитуваної особистості. Метою даної роботи являється створення інформаційно-комп’ютерної системи, яка інтегрувала би в себе засоби, за допомогою яких можна б було в домашніх умовах діагностувати психiчний стан людини та надати всі необхідні результати досліджень фаховому лікарю, або ж аналітику для подальших дослідницьких цілей. Була розроблена концепція та створений прототип програми, що дозволяє проводити опитування та розраховувати результати тестування. Розроблений програмний засіб дозволяє: − проходити тестування по відомим опитувальникам; − розраховувати результати тестування; − розпізнавати емоційний стан особистості під час проходження тестування; − зберігати результати тестування в базi данних для подальшого використання; Подальший розвиток розробки можливий у бік додавання до неї нових методів діагностування депресивного стану особистості. Робота має практичну цінність.
The object of the bachelor's qualification work is to develop the concept of diagnosing a person's depressed state with the help of well-known questionnaires with the addition of the ability to recognize the image of the interviewed person. The purpose of this work is to create an information and computer system that would integrate the means by which it would be possible to diagnose the mental state of a person at home and provide all the necessary research results to a specialist or analyst for further research purposes. The concept was developed and a prototype of the program was created, which allows to conduct surveys and calculate test results. The developed software allows you to: - to be tested on known questionnaires; - calculate test results; - recognize the emotional state of the individual during testing; - store test results in a database for future use; Further development of development is possible in the direction of adding to it new methods of diagnosing a depressed state of personality. The work has practical value.
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Gusinja, Bjeshka. "Analyzing and controlling food waste inside supermarkets.Evaluation of implemented prototype to connect supermarkets with charities. Case study: Kosovo’s supermarkets." Thesis, Linnéuniversitetet, Institutionen för medieteknik (ME), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-77924.
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Food waste is considered to be a big problem worldwide. Different research projects have been done within this area in order to find ways that can help reduce this problem. This thesis addresses the problem of food waste in the supermarkets of Kosovo, by identifying the amounts of food waste in 3 supermarkets of this region. In addition, it explores the possibility of connection between supermarkets and charity organizations by using a developed prototype that corresponds to the field of web technologies. The prototype is implemented based on the feedback of supermarket workers. Interviews with open-ended questions were realized with supermarket workers and charity organization workers in order to identify the best medium that can be used to connect them. The prototype is realized using Wordpress, and evaluated first using the SUS questionnaire. Furthermore, it is also evaluated by performing usability test with supermarket and charity organization workers. The participants were asked to perform different tasks during the evaluation. The study shows that the use of the developed prototype reduces the amount of food waste in supermarkets. Furthermore, it successfully connects charity organizations with supermarkets. In addition, it provides a new way of controlling expiry dates of items resulting in reduction of waste inside supermarkets.
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Gill, Michael W. "Design, validation and prototype testing of a high resolution all-reflection Michelson interferometer for solar occultation measurements of the OI 1304-Å triplet emission /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA283705.
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Gill, Michael W. "Design, validation and prototype testing of a high resolution all-reflection Michelson interferometer for solar occultation measurements of the OI 1304-ΩA triplet emission." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/30815.
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A prototype All-Reflection Michelson Interferometer (AMI) was tested using two different diffraction gratings and a variety of light sources. The original design used a focusing lens, a pinhole aperture and an off-axis parabolic mirror for collimation, a plane diffraction grating and two plane mirrors to divide and recombine the light and a CCD camera to record the interference pattern. Interference patterns were recorded and analyzed in the Interactive Data Language (IDL) using Fourier transform techniques. The design was then modified to approximate an actual instrument for remote observations of the atomic oxygen 1304-A triplet emission. The results of numerous experiments using both the original and modified instruments verified the feasibility of using the AMI as a compact, lightweight, high resolution instrument for use on sounding rocket or satellite platforms.
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Franzén, Ida. "Limitations with Using Role Play for Experiential Learning." Thesis, Linköpings universitet, Interaktiva och kognitiva system, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-158625.
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Among researchers within the design area, role play is often spoken about in a positive manner. This study aims to discover the limitations with role play as a tool for experiential learning. This is done by evaluating a prototype of an early-stage concept of a role play-tool. The tool is aimed for Swedish SMEs to raise awareness and create curiosity of guanxi, which is a vital part of Chinese business culture. The tool is compared to another experiential-based tool, Experience Map, with the same purpose but based on real scenarios rather than simulated scenarios. Prototype testing with intended users identified the difficulty of giving instructions on cultural behaviour as one limitation. This limitation is especially difficult in settings where the participants have no previous knowledge within the area, which is the case for this study. Another limitation is the challenge of giving enough instructions for the players to act on, without interrupting the exploration aspect of the tool. Besides, the target group seem to prefer more hands-on tools that are more relevant for their specific business and less time-consuming. The main difference between the tools is that the experience map which is based on real scenarios, creates a greater interest among participants and a higher level of the participants’ willingness to use it.
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Wigrup, Magnus. "Ytterligare ett IT-system." Thesis, Malmö högskola, Teknik och samhälle, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20587.
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Denna rapport avser att undersöka för- och nackdelar med att utveckla ett för ändamålet specialanpassat system eller utnyttja de standardsystem, som i det aktuella fallet tryckerikoncernen JMS redan äger och använder. Genom en mer noggrann definiering av ickefunktionella krav på bland annat användbarhet har en specialanpassad prototyp framställts. I projektet användes metoder för kravinsamling som ledde till en kravspecifikation och i sin tur slutade med en färdig prototyp. Prototypen jämfördes med två standardsystem genom användartester och intervjuer. Prototypen visade sig leva upp till de krav som upptäcktes. Majoriteten av testpersonerna föredrog ett enklare avskalat system, vilket prototypen upplevdes som, före system med mycket information och funktioner. Med tanke på kostnaden rekommenderas dock JMS att försöka strukturera upp ett av de i företaget befintliga systemen och använda detta istället för att utveckla och implementera ytterligare ett nytt system i företaget.This report intends to explore the pros and cons of developing a customized system or use the standard system, which in this case printing JMS Group already owns and uses. With a more accurate definition of non-functional requirements such as usability, has a custom-made prototype been built. The project used methods of requirements gathering that led to a specification and ended with a finished prototype. The prototype was compared with two standard systems through user testing and interviews. The prototype proved to live up to the requirements discovered. The majority of test subjects preferred a simpler clean system, which the prototype was, to systems with a lot of information and functions. Given the cost JMS was recommended to structure one of the systems that they already owns and uses instead of developing and implementing a new system further in the company.
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Vargas, Fabian Luis. "Validação de protótipo e análise de falhas no teste com feixe de elétrons : um estudo visando a sua automação." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1991. http://hdl.handle.net/10183/24147.
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O trabalho aqui apresentado descreve algumas pesquisas em teste de circuitos integrados. Estas pesquisas consistem, por um lado, na análise de falhas e por outro, na validação de protótipos, ambas fazendo uso de técnicas de teste com feixe de elétrons. A primeira parte deste trabalho apresenta uma revisão dos princípios do teste com feixe de elétrons, bem como descreve as pesquisas correntemente em desenvolvimento no laboratório TIM3-INPG. Também são abordados temas como o tratamento de imagem em contraste de potencial e projeto visando a testabilidade de circuitos no teste com feixe de elétrons. Quanto a este último assunto, sua inclusão neste trabalho visou apresentar, aqueles que trabalham na área de projetos de circuitos, desconhecedores dos problemas do MEV, idéias de como realizar seu projeto a fim de tornar a tarefa de depuração do protótipo pelo feixe de elétrons o mais fácil possível. A segunda parte descreve experimentos práticos na área de validação de protótipos, onde duas técnicas pertinentes foram utilizadas e o estudo de um caso real foi apresentado. A primeira técnica é baseada na adaptação de uma ferramenta de comparação de múltiplas imagens adjacentes, que foi originalmente desenvolvida para o processo de análise de falhas. A segunda técnica utilizada faz uso de um sistema especialista que, baseado no conhecimento adquirido do circuito, gera o diagnóstico automático de falha. Os desempenhos destas duas ferramentas são apresentados e discutidos, bem como é fornecido o diagnóstico de falha para o circuito protótipo utilizado. Como conclusão, são propostos futuros desenvolvimentos no processo de validação de protótipo. Estes melhoramentos objetivam tanto a completa automação do processo quanto o enriquecimento da informação provida no final do processo de diagnóstico de falha, de forma a obter-se um ambiente de teste para validação de protótipos apresentando um alto grau de integração e automação.The work reported herein describes some IC testing research. This research concerns on one hand, failure analysis and on the other hand IC prototype validation, both making use of e-beam testing techniques. The first part of this work presents a review of e-beam testing as well as describes the researches currently in progress at the TIM3-INPG Laboratory. Subjects like voltage contrast image treatment and design for testability in e-beam testing are also discussed. Considering the last theme, it was included in this work in order to provide to the IC designers, whose knowledge about the SEM problems is not enough, some ideas on the way of how to accomplish their design to make the prototype validation process as easy as possible. The second part describes practical experiments in the prototype validation domain, where two approaches were used and a real case study was presented. The first approach is based on the multiple adjacent images comparison process adaptation, firstly developed to be used in the failure analysis process. The second technique makes use of an expert system, based on the acquired knowledge of the device under test in order to provide the fault diagnosis. The performances of these two approaches are presented and discussed, as well as, the fault diagnosis to the prototype circuit is presented. As conclusion, it is proposed further developments in the prototype validation approach. These improvements deal with the automation of the entire process as well as the enhancement of the information provided at the end of the fault diagnosis process, in order to obtain a testing environment for prototype validation with high integration and automation degrees.
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Alluri, Veerendra Bhargav. "MULTIPLE CHANNEL COHERENT AMPLITUDE MODULATED (AM) TIME DIVISION MULTIPLEXING (TDM) SOFTWARE DEFINED RADIO (SDR) RECEIVER." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/499.
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It is often required in communication and navigation systems to be able to receive signals from multiple stations simultaneously. A common practice to do this is to use multiple hardware resources; a different set of resources for each station. In this thesis, a Coherent Amplitude Modulated (AM) receiver system was developed based on Software Defined Radio (SDR) technology enabling reception of multiple signals using hardware resources needed only for one station. The receiver system architecture employs Time Division Multiplexing (TDM) to share the single hardware resource among multiple streams of data. The architecture is designed so that it can be minimally modified to support any number of stations. The Verilog Hardware Description Language (HDL) was used to capture the receiver system architecture and design. The design and architecture are initially validated using HDL post-synthesis and post-implementation simulation. In addition, the receiver system architecture and design were implemented to a Xilinx Field Programmable Gate Array (FPGA) technology prototyping board for experimental testing and final validation.
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Kittane, Santusht Vasuki, and Preetham Harinath. "An evasive manoeuvre assist function for over-reactive drivers." Thesis, KTH, Fordonsdynamik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-243293.
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Previous studies have shown that many drivers are unable to provide the right amount of steering torque when facing an imminent collision with an upcoming obstacle. In some cases, drivers under-react i.e., they provide too low steering inputs and thus collide with the obstacle in front; in other cases, drivers might apply a higher steering input than necessary, potentially resulting in the vehicle leaving the road or losing stability. The EMA function is an active safety feature which has the sole objective of providing steering torque interference when performing such a manoeuvre. The motivation for the thesis work is to overcome some limitations of the existing MA function which does not incorporate the ability to differentiate driver reactions. In this thesis, an Evasive Manoeuvre Assist (EMA) function is designed to adapt to both types of the drivers, by an optimised steering torque overlay. The existing current EMA function is always amplifying the driver steering inputs using a feed-forward controller. The focus of this thesis work is to identify and dene a proper steering sequence reference model for closed-loop feedback control design. A simple single-point preview model is designed first to calculate the reference steering angle. A few test scenarios are set-up using the IPG CarMakerTMsimulation tool. The reference model is then tuned with respect to the amplitude and frequency by batch simulations to obtain the optimal steering prole. A feedback controller is then designed using this reference model. The controller is implemented in a real-time environment, using a Volvo rapid-prototype test vehicle. Preliminary variation tests have shown that the developed controller can enhance both an over-reacting and under-reacting driver's performance during an evasive manoeuvre, by applying assistance/resistance EPAS torque timely. The designed EMA function is shown to accommodate different driver reactions and provide intuitive torque interference. As opposed to the earlier notion that the EMA function only assists the driver with an additional steering wheel torque, it was shown that the optimal steering torque overlay might be in the form of assistance or resistance.
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Pilát, Peter. "Posílení principů UX do existujících uživatelských rozhraní." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-264980.
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This thesis explains meaning of user experience, its main aspects, selected methodology, its integration into agile development process and what UX maturity level can be represented in real company. It also deals with analysis of selected existing user interfaces used for network print management and its end users. Prototyping and user testing methods are iteratively applied to these user interfaces. Evaluation of these methods concludes the thesis with a recommendation what UX processes should be integrated for future development of user interfaces in Y Soft.
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Kulkarni, Ambarish. "Design and manufacture of car carrier." Thesis, Queensland University of Technology, 2010.
Find full textAbstract:
Currently the loading of cars in car carrier is done manually by the truck drivers. The drivers load car carrier by climbing over the height of 1.5 meters, which is limitation in existing designs. While loading cars on the top of the prime mover, driver needs to reach top of the car carrier to load and strap cars in positions above 1.5 meters. This cause's potential risks on falls from heights; identified as an issue in car carrier sector by OHS authorities.
This research focuses on health and safety issues in present car carriers and improvement in designing of a car carrier, which eliminates loading of cars above 1.5 meters from ground level. This research develops a new car carrier with improved design mechanisms to avoid the climbing of the driver over the height of 1.5 meters without compromising on specifications of car carrier, including number of cars, variety of cars like SUV, small cars etc.
For the first time in the sector, car carrier is developed which will be capable of loading eight cars and safe by design due to elimination of drivers climbing on identified risk areas. After a short review of historic origin of the sector and identifying problems in present car carriers, research emphasises on development of car carrier to overcome falls related issues. Discussions on different layouts, to resolve problems identified and keeping design complaint with ADR and OHS regulations are presented. Latest techniques in product development including virtual design process (VDP), computer aided design (CAD), product data management (PDM), and finite element analyses (FEA) were used throughout car carrier designs for validation and verifications.
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Ляшко, С. Ю. "Автоматизоване тестування веб-додатків." Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75888.
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У роботі досліджено необхідність проведення автоматизації процесу тестування веб-додатків. Основною метою дослідження є вибір програмного продукту, яких допоможе підвищити ефективність та якість тестування веб-додатків, а також розробка прототипів тест кейсів виконуваних додатком для аналізу отриманої користі від впровадження автоматизації.The necessity of automation of web application testing process was investigated. The main purpose of the research is to select a software product that will help improve the efficiency and quality of web application testing, as well as to develop prototypes of test cases performed by the application to analyze the benefits of automation.
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Rubak, Adam, and Joakim Wennerblom. "Prototyp för MS SQL-testning i Dockermiljö." Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84521.
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Att utveckla applikationer kräver mer än kod. Docker förenklar och accelererar utveckling av mjukvara, samtidigt som det ger utvecklare friheten att använda sig av olika verktyg, metoder och publiceringsmiljöer. Prevas utvecklar idag många system som använder sig av MS SQL Server och .NET i Docker men saknar ett smidigt sätt att testa systemen innan leverans. Målet med projektet är att skapa en prototyp åt Prevas i Karlstad som gör det möjligt att smidigt testa och säkerställa förväntad funktionalitet hos MS SQL-serverbaserade applikationer. Resultatet av projektet är ett program som gör det möjligt att testa kommunikationen mellan en MS SQL Server och en applikation, samt presentera resultatet för användaren i en webbklient. Vår prototyp visar att det är möjligt att utveckla ett sådant system. Dock finns det delar av systemet som behöver utredas t.ex. nedladdning av testresultat, robust felhantering, samt att utveckla den till en mer generell lösning som går att anpassa efter databasens struktur.Application development requires more than skills in writing good code. Tools like Docker can accelerate the development of software and it gives the developer the freedom to change the tools, methods, and deployment environments. Prevas is developing systems that use MS SQL Servers and .NET environments in Docker but they need to make it more effective by automating the process of testing the database before deployment. The goal of this project is to create a prototype for Prevas that makes it possible to easily test and ensure expected functionality of MS SQL Server based applications. The result of the project is a program that makes it possible to test the communication between a database and an application as well as present the outcome in a web client for the user. Our prototype shows that the development of similar systems is possible but there are pieces of the system that needs further development. Some examples include downloading the results of the tests, robust error handling methods, as well developing a more general application to adapt the system to a database structure.