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Dissertations / Theses on the topic 'Design methodology'
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Mhar, Javeed I. "VLSI design methodology." Thesis, University of Edinburgh, 1990. http://hdl.handle.net/1842/11855.
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The development of FIRST was a significant step in the field of silicon compilation. With FIRST, bit-serial signal processing systems could be rapidly implemented in silicon by high-level designers without requiring layout expertise. This thesis explores extensions to the compiler, but the methodology and techniques are not specific to FIRST and could be used in the more general VLSI arena. One major theme is the use of process independent layout, allowing the rapid update of a cell library to current state of the art process rules. After surveying other layout strategies, one particular layout style, gate matrix, was evaluated through the manual layout of a bit-serial, two's complement, multiplier utilising novel architectural features. The operation and architectural features of the multiplier are described, as these features were to be incorporated as options in newly generated cell libraries. SECOND, a full span silicon compiler; taking the high-level input description of FIRST but synthesizing layout to a process independent form (gate matrix) was developed using ideas gained from the manual assembly procedure. SECOND maintains and extends the hierarchy of FIRST using different assembly strategies for differing levels of hierarchy in the synthesis procedure. The hierarchy is described and the placement, routing and assembly procedures of the new elements of the hierarchy are covered. The automation tools used to generate the gate matrix layout of the lowest hierarchy level of SECOND are covered in a separate chapter. Using the same concepts of hierarchy, a tool ENGEN which transforms FIRST intermediate code to a gate level network description in HILO is also described as an alternative to SECOND in the search for process independence. The thesis ends with a suggestion of a bit-serial/bit-parallel frame for encouraging the acceptability of bit-serial systems.
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BALDRIDGE, DEVIN WILLIAM. "THE METABOLIC DESIGN METHODOLOGY." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1069442326.
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Wu, Yutong. "SEME Design Methodology For Nostalgic Design." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1530880404101115.
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Wiggins, Glenn E. "Methodology in architectural design." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14498.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1989.Includes bibliographical references (leaves 173-174).
The act of designing in architecture is a complex process. Many designers, when probed for reasons to explain their actions, are either unable to answer questions, or provide explanations that are not true descriptions of their actions. Frequently the designer will answer that his or her reason for making a particular design decision is based on 'feeling' or 'intuition.' Under this model the design process assumes a 'mystical' aura. Architectural designers can create, yet are unable to say how they do so. Often that which can be explicitly discussed by the designer is the least significant part of his or her design process. It is unlikely that designers are 'channeling' information from cosmic sources. Rather, they are working with knowledge that is largely tacit. This thesis attempts to de-mystify the process of architectural design. Through a close scrutiny of existing literature, incorporation of personal experience as an architect, and testing of theories with lay, novice, and expert designers a theory of design methodology is proposed.
by Glenn E. Wiggins.
M.S.
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Tedeschi, Carla. "Design theory and methodology /." Online version of thesis, 1992. http://hdl.handle.net/1850/11771.
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Visscher, Klaasjan. "Design methodology in management consulting." Enschede : University of Twente [Host], 2001. http://doc.utwente.nl/57172.
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Zheng, Wenbo, and Hongxi Zhong. "Reconfigurable Machine Tools Design Methodology." Thesis, KTH, Industriell produktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119082.
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In today’s industry, the competitive market, the short life time of the products and rapid change in customer demand forms a big trend of appearance of new manufacturing system. Reconfigurable Machine Tool (RMT) is a kind of solution for future machining systems, thus it can not only provide customized solutions to the operation requirements but also is cost-effective. Thethesis aims to create and implement methodology of RMT design for manufacturing industry. The methodology is introduced and extended according to the five principals of modular machine tool design. The methodology will be applied step by step herein so as to make the methodology more clear. First of all is to get the concept or process requirements from the customer. The customer requires three reconfigurable part families for a high speed milling application including tables, spindles, and cutters. In this case, to fulfill customer’s requirements and concept, the dual spindle (Multi-tool) RMT is selected as an example to interpret the RMT design methodology. Secondly, the most important point in methodology of RMT design is to analyze the valuable proposal of the four principles of modular design based on extensive experience. This work turns the four principles, separation, and unification (standardization), connection, and adaptation, to practical design methodology. Based on the classical four principles, the principle of reusability is an addition principal in consider of zero waste concept. In order to perform the RMT design methodology effectively, it is necessary to complement the advantages of the reconfiguration in dual spindle RMT design and the reconfiguration for other part families in according to the RMT design methodology. A final step utilizes computer software to model the configuration in 3 dimensions. And evaluations can be discussed in Degree of Freedom (DOF), stiffness analysis and number of modules.
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Oestvik, Ivan. "A design for safety methodology." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366855.
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Henry, M. P. "Design methodology : Regenerative heat exchangers." Thesis, University of York, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379493.
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Guroglu, Serkan. "An Evolutionary Methodology For Conceptual Design." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606422/index.pdf.
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The main goal of this thesis is the development of a novel methodology to generate creative solutions at functional level for design tasks without binding solution spaces with designers&rsquoindividual experiences and prejudices. For this purpose, an evolutionary methodology for the conceptual design of engineering products has been proposed. This methodology performs evaluation, combination and modification of the existing solutions repetitively to generate new solution alternatives. Therefore, initially a representation scheme, which is generic enough to cover all alternatives in solution domain, has been defined. Following that, the evolutionary operations have been defined and two evaluation metrics have been proposed. Finally, the computer implementation of the developed theory has been performed. The test-runs of developed software resulted in creative alternatives for the design task. Consequently, the evolutionary design methodology presents a systematic design approach for less experienced or inexperienced designers and establishes a base for experienced designers to conceive many other solution alternatives beyond their experiences.
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Almajdoub, Salahuddin A. "A Design Methodology for Physical Design for Testability." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/30574.
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Physical design for testability (PDFT) is a strategy to design circuits in a way to avoid or reduce realistic physical faults. The goal of this work is to define and establish a speci c methodology for PDFT. The proposed design methodology includes techniques to reduce potential bridging faults in complementary metal-oxide-semiconductor (CMOS) circuits. To compare faults, the design process utilizes a new parameter called the fault index. The fault index for a particular fault is the probability of occurrence of the fault divided by the testability of the fault. Faults with the highest fault indices are considered the worst faults and are targeted by the PDFT design process to eliminate them or reduce their probability of occurrence.
An implementation of the PDFT design process is constructed using several new tools in addition to other "off-the-shelf" tools. The first tool developed in this work is a testability measure tool for bridging faults. Two other tools are developed to eliminate or reduce the probability of occurrence of bridging faults with high fault indices. The row enhancer targets faults inside the logic elements of the circuit, while the channel enhancer targets faults inside the routing part of the circuit.
To demonstrate the capabilities and test the eff ectiveness of the PDFT design process, this work conducts an experiment which includes designing three CMOS circuits from the ISCAS 1985 benchmark circuits. Several layouts are generated for every circuit. Every layout, except the rst one, utilizes information from the previous layout to minimize the probability of occurrence for faults with high fault indices. Experimental results show that the PDFT design process successfully achieves two goals of PDFT, providing layouts with fewer faults and minimizing the probability of occurrence of hard-to-test faults. Improvement in the total fault index was about 40 percent in some cases, while improvement in total critical area was about 30 percent in some cases. However, virtually all the improvements came from using the row enhancer; the channel enhancer provided only marginal improvements.Ph. D.
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Freiman, Noah. "Unfolding The Design Methodology : A toolkit for designers." Thesis, Konstfack, Industridesign, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-7770.
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Prototyper är avgörande för att lyckas med designprocessen. Ett återkommande hinder är att översätta fysiska prototyper till digitala. Genom att utveckla ett nytt verktyg och förbättra den allmänna designmetodiken, kan nya idéer och resultat blomstra som kan få stor betydelse för framtidens design. Resultatet är en noggrant framtagen uppsättning av geometriska former som tillsammans med en app kallad Eascan möjliggör för användaren att kombinera fysiska och digitala prototyper effektivt.
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Southard, Phillip D. "Design methodology for modeling a microcontroller." Ohio : Ohio University, 2000. http://www.ohiolink.edu/etd/view.cgi?ohiou1172868240.
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Smith, Joanne Stuart. "A multiple viewpoint modular design methodology." Thesis, University of Strathclyde, 2002. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21150.
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Engineering Design Re-use refers to the utilisation of any knowledge gained from the design activity to support future design. As such, Engineering Design Re-use approaches are concerned with the support, exploration and enhancement of design knowledge prior, during and after a design activity. Modular Design is a product structuring principle whereby products are developed with distinct modules for rapid product development, efficient upgrades, and possible re-use (of the physical modules). The benefits of Modular Design centre of a greater capacity for structuring component parts to better manage the relation between market requirements and the designed product. This work explores the capabilities of Modular Design principles to provide improved support for the Engineering Design Reuse concept. The Modular Design principle is extended to structure not only the artefact's components but also their associated knowledge, to support, explore and enhance the knowledge genera ted during the evolution of the design process. A novel modular design approach, termed a Multi-Viewpoint Modular Design Methodology, is developed to address identified requirements including; support for evolutionary design knowledge, exploration and identification of inherent modularity and maintenance of the modular solution. The overall concept of the Methodology is to support the designer in evolving a modular artefact whilst utilising the principles of modularity to structure the artefact knowledge to enhance its potential applicability for re-use, the concept is termed knowledge modularity. Based on the results of a state of the art review deficiencies of existing approaches are identified including; insufficient support of evolutionary design knowledge, insufficiencies in the modelling, exploration, identification and representation of knowledge modularity, limitations in the module identification process. Declarative and procedural knowledge is developed to define a novel Modular Design Methodology to address these deficiencies. As such, the Methodology presents a formalised approach to support the modelling, optimisation and identification of modularity, both within and across viewpoints (function, working principle and structure) of the product structure, and evolutionary design knowledge. The core phenomena of a knowledge module is formalised in terms of the knowledge of design concepts and their dependencies. The formalism supports the identification of inherent modularity. An alternative model, termed the Modular Structure Matrix is developed as part of the Methodology to represent this inherent modularity. In addition, the Methodology has been developed, through a 12-month industrial residency, to address the requirements of practising designers. The Methodology is applied throughout a design activity to formalise and represent (in a matrix formalism) knowledge of the concepts embodied by a design artefact. The resulting model provides the basis to determine and represent interdependency knowledge between design concepts. The modelled concept and dependency knowledge can be utilised to support a modular analysis of the product structure both within and across design viewpoints. An optimisation and module identification mechanism can then be applied to the model and, based on the dependency data, identify inherent modularity within individual viewpoints of the product structure. Further, a mapping methodology has been developed to support the maintenance of the modular solution, and its associated artefact knowledge, across multiple viewpoints of design. The new methodology can be applied in a cyclic and iterative manner to support modularisation of the artefact design knowledge through the evolution of the design. A computational implementation has been developed to aid the evaluation of the Methodology. The functionality ofthe Methodology has been illustrated through two literature based case studies and two industrial implementation evaluations. An implementation and evaluation methodology was formalised through the rationalisation of the activities carried out during the first, and further utilised as the basis to support the second, industrial implementation. The two literature based studies evaluate the functionality of the methodologies optimisation and module identification mechanisms. These evaluations result in the identification of modular hierarchies that were not evident in the findings of the original publications. In addition, both industrial implementations result in the identification of potential improvements in the design. The evaluations illustrate the functionality of the Methodology in identifying and maintaining modularity, structuring design knowledge, supporting decision-making, learning, and improving design understanding. In addition, the evaluators outlined further potential Methodology application fields such as team design, manufacturing design and technology life-cycle management. Further the strengths and weaknesses of the Methodology, the computational implementation, and the research methodology utilised to facilitate the work presented in this thesis, are discussed. Finally, future work required to enhance the capabilities of the Multi- Viewpoint MD methodology and the functionality of the computational implementation have been identified, including; the development of more advanced modular clustering criterions, the introduction of constraints and constraint management, and the development of module costing mechanisms/metrics.
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Yu, Bing. "Hybrid modelling methodology for system design." Thesis, Loughborough University, 1995. https://dspace.lboro.ac.uk/2134/6999.
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In the face of rapid development in information technology coupled with a growing dynamism in global markets, manufacturing systems have to be re-constructed for short term or long term goal. Such innovations promise to lead to a new competitive stage, which typically involve design of function, information and behaviour of systems. In order to design the system, simulation has often been chosen. However, simulation has proved limited and fails to aid design of such a complex systems because of consuming much computing time and cost, especially when modelling larger systems. Thus, there is a need to seek a new approach, in a way that results in simulating such a large manufacturing system with less demand on computing time and cost. This study researches into a hybrid modelling approach to minimise these limitations. It includes proposing a hybrid modelling methodology and developing a hybrid modelling tool. The methodology integrates simulation and metamodelling techniques. The metamodel employed in the study possesses, not only characteristics of conventional metamodels in terms of representing relationships in quantity, but also in time lapse. This is the originality of the study and the significant distinction between this research and application of metamodelling in conventional ways. The hybrid modelling tool is developed to support and demonstrate the identified hybrid methodology. LISP has been used as the software language for the hybrid modelling tool. The result of this work concludes that the hybrid modelling approach is capable of simulating a complex manufacturing system with less demands on the computer. The work reported in this thesis has been carried out in conjunction with the EPSRC research project, Hierarchical Manufacturing System Modelling (HMSM) (GR/F96549), to produce an Integrated Design and Modelling Methodology (IDEM). The project was initially a collaborative research program including Loughborough University of Technology (LUT), Morris Crane Ltd., of Loughborough and GEC Large Machine, of Rugby. The experience of these collaborators has proved most valuable in supporting the research, and have provided a cross section of views and comments. The research reported in this thesis is set in the context of the HMSM Research group at Loughborough.
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Gantes, Charalambos. "A design methodology for deployable structures." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13901.
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Abboud, Klink Boutros Sami. "Motion-based design methodology for buildings." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/33261.
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Abboud, Klink Boutros Sami. "Motion-based design methodology for buildings." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/41325.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.Includes bibliographical references (leaves 131-132).
by Boutros Sami Abboud Klink.
M.S.
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Baba, Omar. "A methodology for bus network design." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36639.
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Tokyay, Bora M. (Bora Mustafa) 1980. "A design methodology for hysteretic dampers." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/84831.
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Ortiz, Perez Mariela. "Finland's Education: A Methodology for Design." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1522342170846077.
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Khalighy, Shahabeddin. "Product design methodology supporting aesthetic evaluation." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/6705/.
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Based on the fundamentals of visual art and function, this research has developed a product design methodology capable of quantification of the aesthetic qualities and proposing objective solutions to enhance the appearance related variables and characteristics of a product. The objective evaluation has been done via analysis of involuntary responses using eye-tracking data based on the visual perceiving process of design. The result confirmed the reliability of the methodology by generating constant results and a good match between the measured values and declared preference. In addition, the aesthetic enhancement methods based on quantified metrics with the sample designs have been provided. The result of the research suggests that eye-tracking technology is a reliable tool in aesthetic evaluation and has potential for further development.
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Sandell, Malin, and Saga Fors. "Design for Additive Manufacturing - A methodology." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263134.
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Additive manufacturing (AM), sometimes called 3D-printing is a group of manufacturing technologies that build up a product using a layer by layer technique and provides new ways of manufacturing parts and products. The Company in this thesis wants to make AM a tool in their manufacturing toolbox. When introducing this manufacturing method, new processes and methods have to be developed. The purpose of this thesis is to develop a methodology that will help the designers when identifying parts that should be manufactured using AM. The development of this methodology has followed the principles of service design which is a holistic interdisciplinary approach where methods from different disciplines are combined to create benefits to the end user experience. Before the development process, a large background study was performed to gather detailed information within the area of AM. The methodology concept was then developed through five iterative cycles where methods such as interviews, trigger material, questionnaire, case study and stakeholder mapping were used. The thesis resulted in an AM handbook with information regarding the technology and a five step methodology for choosing when and why to use AM as a manufacturing method. Step one is to identify the AM potential in a product which is based on complexity, customization and production volume. Step two is to specify requirements of the products, this can be surface finish, tolerances etc. The third step in the design methodology is part screening, which is the making of the final decision about if the product should be printed and if it can be printed. The fourth step is to choose an AM technology based on the requirements specified in step two by providing information about the technologies’ restrictions and possibilities. Step five in this methodology is the design of AM products and provides simple design guidelines. It has been shown that a dynamic task is best solved through working with dynamic methods, therefore service design approach is a flexible and good fit for this thesis. This design methodology is only a part of the AM-area and needs to be supplemented with other knowledge within the area. The first step after implementing this handbook is to investigate how the organization and business is affected when implementing AM.Additiv tillverkning (AM), även kallat 3D-printing, är benämningen på en grupp tillverkningstekniker där en produkt byggs lager för lager. Denna masteruppsats har utförts i samarbete med ett svenskt industriföretag som levererar lösningar inom tillverkningsindustrin, i rapporten kallat Företaget. Genom att utveckla nya designprocesser och metoder vill Företaget inkludera AM i sin tillverkningsstrategi. Syftet med detta masterexamensarbete var att utveckla en metodik för hur urval och utveckling av produkter anpassade för AM ska ske. Utvecklingen av metodiken följer principerna för tjänstedesign, vilket innebär ett holistiskt tvärvetenskapligt arbetssätt där metoder från olika discipliner kombineras för att skapa en positiv upplevelse för slutanvändaren. Innan utvecklingsprocessens start gjordes en stor bakgrundsstudie för att införskaffa kunskaper kring AM. Därefter utvecklades en metod genom fem iterativa cykler där metoder som intervjuer, triggermaterial, frågeformulär, fallstudier och stakeholdermapping användes. Masteruppsatsen resulterade i en handbok med information kring teknikerna och en metodik i fem steg för att välja när och varför AM bör användas som tillverkningsmetod. Första steget är att identifiera AM potentialen hos en produkt, vilket baseras på komplexitet, kundanpassning och produktionsvolym. I steg två ska produktkrav specificeras, exempel på sådana krav är ytfinhet och toleranser. Tredje steget i metoden handlar om en produkt-undersökning under vilken ett slutgiltigt beslut fattas angående om produkten kan och bör tillverkas. I fjärde steget sker valet av teknik baserat på de produktkrav som specificerats i steg två, genom att information ges angående teknikens möjligheter och begränsningar. Femte steget i metoden handlar om designen av AM produkter och förser konstruktören med enklare riktlinjer för designen. Utveckling av en metodik kräver ett dynamiskt arbetssätt och principerna inom service design visade sig passa bra för detta projekt. Det visade sig också att den resulterade metodik behöver kompletteras med information i framtiden. Det behövs även fastställas tydliga mål för AM i företaget och vilket syfte implementeringen av denna nya process innebär
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Lindahl, Mattias, Erik Sundin, Tomohiko Sakao, and Yoshiki Shimomura. "An interactive design methodology for service engineering of functional sales concepts : a potential design for environment methodology." Linköpings universitet, Institutionen för konstruktions- och produktionsteknik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-35503.
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Manufacturing companies around the globe are striving to increase their revenues and profitability. One way is through Functional Sales, i.e. shifting the focus from the production of products to the production of services. Functional Sales and Design for Environment (DfE) have many common issues, e.g. the life cycle perspective. The paper’s aim is to highlight a proposed interactive design method for Service Engineering of Functional Sales offers and to relate this method to selected DfE methods and tools as well as users’ experiences with these methods and tools. The paper concludes that the proposed method has several benefits that are useful in DfE. One benefit is that the method does not focus on products but rather on how needs can be satisfied by increasing service content. Another is the visualization of e.g. validation in order to facilitate communication between different actors in the product development process.
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Sheikh, Kashif M. "Design and design methodology of CMOS gigahertz frequency range prescalers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0010/MQ36896.pdf.
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Bathija, Vishal. "An Adaptation Methodology for Reusing Ontologies." Miami University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=miami1155673377.
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Yang, Yujuin. "A methodology for hydrometric monitoring network design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0015/NQ45015.pdf.
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Vanka, Suryanarayana. "A methodology for cross-cultural semantic design." Connect to resource, 1990. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1170343983.
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Ng, Kok. "A descriptive design methodology to support designers." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/13913/.
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An engineering design methodology helps designers to design in a systematic way. Based on the findings from a literature review, engineering design methodologies can be categorised into three types: prescriptive, descriptive and normative. Most established design methodologies are of the prescriptive type and they are based on step-oriented models. However, designers in industry are not found to be too keen on using any of these design methodologies. Among the reasons for not adopting these methodologies are that the prescriptive and normative design methodologies were found to be influencing the design strategies and approaches of a designer while the descriptive types were mostly used to study the design process. Though designers have their own design strategies and approaches, they also need design support. The descriptive type will not interfere with the designer’s strategies but they do suffer from a lack of structure in supporting designers. The goal of this research is to derive a design methodology framework to support designers without influencing their design approaches and strategies. A descriptive design methodology framework to support designers is proposed in this research work. This framework was derived based on four aspects: a descriptive type based on a function-oriented model, the types of support facilities that can be provided, identification of critical design factors as design parameters for the framework and lastly, the adaptation of the Ishikawa fishbone diagram to represent the framework. The novel descriptive design methodology was applied in two case studies: the first with an experienced designer without using any design methods and second, with a novice designer adopting a design approach based on the step-oriented model. The second case study included an additional design tool based on TRIZ to verify the effectiveness of the novel descriptive design methodology working with other tools. The designers’ feedback and observations from these both case studies showed that the novel descriptive design methodology was able to support designers in many ways. In particular it was able to accommodate different design approaches and strategies without influencing the designer, providing both methodology-related and computational-platform related support facilities as well as working in a complementary way with other design tools.
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Russell, Daniel J. "FAD : a functional analysis and design methodology." Thesis, University of Kent, 2001. http://eprints.kingston.ac.uk/3818/.
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Pons, Dirk. "A methodology for system integrity in design." Thesis, University of Canterbury. Mechanical Engineering, 2001. http://hdl.handle.net/10092/3884.
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The early stages of engineering design are formidable terrain for human designers as well as their methodologies and tools. The large uncertainties, fluidity of concept, and frequent lack of quantitative relationships and data make the formal design methods difficult to apply. This project sought to develop a methodology that could help manage the process. The literature on the processes and methodologies engineering design were investigated, and interpreted with respect to a proposed generic design process. Existing methodologies are generally unsuitable for early design stages as they require relatively complete information and problem definition, which may be unavailable. There is need for methodologies that can support the designer even though the design uncertainties are high. A methodology called Design for System Integrity (DSI) was developed to support the management of uncertainty at the early stages of design. Essential features of this methodology are the ability to simulate system behaviour (i.e. functional modelling) based on quantitative as well as qualitative information, the accommodation of uncertainty of analysis and process variability, and the provision of multiple viewpoints on the design, including but not limited to performance, cost, and reliability. The methodology is computationally demanding, and requires a supportive interface between the user and the algorithms, so it was necessary to embody it in software. The software development was from the ground up using the Delphi programming language rather than an expert system or database shell. The software development was a critical enabling mechanism in transforming the DSI methodology from a philosophy and design principle into an embodiment that could be explored and scrutinised. The methodology was applied to a case study of dishwasher engineering design. One of the viewpoints in this model was wash performance, and the system was able to successfully simulate this parameter in a probabilistic manner despite the uncertainties. Other views including electric shock hazard, reliability and cost were also simulated. Being able to produce not only an outcome but also measure its likelihood, is valuable information for evaluating and managing the integrity of a design. The DSI methodology may be applied in the early designs stages when uncertainty is high, as well as in the more mature stages. In addition a catalogue system was developed for functional modelling. This permits the designer to select a device from a database, and inherit the default properties of that device. Importantly, the functional modelling may occur over several viewpoints simultaneously, and placing a device into one view will cause the system to automatically create and populate additional viewpoints in the background with other properties of that device. It is also possible to substitute one device for another, corresponding to the testing of various candidates, and the properties of the device are changed to those of the new one. The results demonstrate that it is possible to develop a methodology for modelling qualitative and quantitative performance at early design stages, so as to manage the integrity of a design.
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Tandon, Vijay Lakshmi. "Computer based optimisation techniques in design methodology." Thesis, University of Wolverhampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335754.
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Bailey, Samuel Gerard. "An image processing design and assessment methodology." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249366.
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Wallace, Michael D. "METIS : a human-computer interface design methodology." Thesis, University of Ulster, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261053.
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Flynn, David Walter. "Energy-efficient SOC design technology and methodology." Thesis, Loughborough University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479318.
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Henkle, Aimee L. (Aimee Leigh) 1975. "Global supply chain design and optimization methodology." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/34762.
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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Manufacturing Program at MIT, 2004.Includes bibliographical references (p. 72).
The work for this thesis was performed at Honeywell in the Automation and Control Solutions (ACS) division. The project focuses on ACS's manufacturing strategy regarding its global supply chain design, primarily discussing the manufacturing growth opportunities available in emerging regions. Honeywell ACS's current methodology for the development of a long-term manufacturing strategy is based on growth and total cost reduction objectives. In order to comprehend the total cost of the manufacturing strategy, considerations such as inventory, logistics and duties, outsourcing and material sourcing are evaluated. The project also considers a factory's geographical location and ACS's year-by-year implementation plan. An outcome of this Honeywell project and the basis of this thesis is the development of a general supply chain design and optimization methodology that utilizes three analytical tools (Country Selection Framework, Total Cost Model and Implementation Plan Process) that are capable of validating the supply chain design of any company. The analytical tools can be used to verify key strategic supply chain decisions or to create a baseline manufacturing strategy. The following results can be determined using this supply chain design methodology: Determine an appropriate operating region for current or future business needs; Evaluate the feasibility of factory relocation projects by considering all relevant costs; Evaluate the cost implications of the supply chain structure by considering logistics, inventory and material sourcing costs; Understand the impact of outsourcing on the manufacturing strategy; Recommend a year-by-year implementation plan in the case of multiple projects and limited capital resources.
by Aimee L. Henkle.
S.M.
M.B.A.
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Wilds, Jennifer M. "A methodology for identifying flexible design opportunities." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/46567.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2008.Includes bibliographical references (p. 105-109).
Technical and operational uncertainties dynamically change environments for engineering systems. Flexibility allows systems to continue delivering value as the uncertainty unfolds. Uncertainty can better be managed by embedding flexibility into the system. However, system designers do not have a tool or metric that identifies which components within the system to focus embedded flexibility efforts. They rely on intuition developed through experience and expertise to build in system flexibility, often leading to disagreement between system stakeholders (both designers and customers) about where to focus efforts due to the differing perspectives and inability to assess knock-on effects. Therefore, providing a tool to help designers screen the system for opportunities for embedded flexibility will also establish reasoning supporting their claims.This thesis proposes a general screening methodology for identifying potential Flexible Design Opportunities (FDOs) in systems; demonstrates the methodology using a Micro Air Vehicle (MAV) platform developed for Department of Defense (DoD); evaluates the ability to exploit FDOs within DoD Acquisitions; and makes recommendations to system designers using the presented case, where the question of where and how to embed flexibility is complicated by multiple system uncertainties. The case study provides useful results, identifying FDOs that were validated by the author's experience as a system engineer and program manager. The development of the methodology yielded two characteristics to screen system components for FDOs: the component's ability to propagate or absorb change and its switch cost associated with making the desired change. Change Propagation Analysis coupled with filtering techniques to reduce the complexity of the data and rank system components with respect a newly proposed metric, Desired Flexibility Score (DFS), that represents the attractiveness of the component for embedded flexibility. The analysis concludes that the DoD acquisitions guidelines do provide opportunities to implement FDOs for longer term programs (> five years). However, process requirements may hinder the ability to react quickly to rapidly changing or emerging technical and operational uncertainties to maximize the upside potential of systems, while minimizing the downside risk.
by Jennifer M. Wilds.
S.M.
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Martin, Michael J. (Michael John) 1962. "Methodology for architecture development for product design." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/29888.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2000.Includes bibliographical references (p. 101-104).
An integrative methodology for architecture development in a product development environment is described. The methodology combines the use of the design structure matrix technique with constraint-based modeling to create a process that satisfies the following requirements: 1. Provide a means for modeling the system that provides the capability to gain feedback on proposed decisions. This promotes rapidly system learning. 2. Provide a definition of the linkage between product requirements and design parameters. 3. Provide documentation that makes the architecture explicit and enables others to have access to the architectural knowledge. 4. Increase confidence in the proposed system so that product design can proceed with a minimum of risk. The application of the methodology in the context of the development of the xerographic module architecture for color printing system is described. The project was a clean sheet design using a new color architecture and implementing seven new technologies. A significant result is that once the architecture was accepted and placed under change control, the architecture has not changed in four years. Traditionally, similar projects have had to make significant changes as the design matured. Based on the case study, there is anecdotal evidence to support the hypothesis that the methodology can be successfully used to develop complex systems. It is shown that the methodology is closely aligned to the product development process. During the pre-concept and concept phases, the models were used to develop the system architecture. During the detailed design phase, the models can be used to maintain the integrity of the architecture as the design and technologies mature. Finally, in order for the methodology to be successfully applied it must have the full support of program management and the design and technology organizations.
by Michael J. Martin.
S.M.
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Rithe, Rahul (Rahulkumar Jagdish). "SSTA design methodology for low voltage operation." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60184.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.Includes bibliographical references (p. [101]-103).
Statistical process variations have long been an important design issue. But until recently, process variations have been global process variations, i.e., transistor parameters may vary from die to die but are constant within a die. With transistor geometries shrinking below 65nm, however, a new kind of statistical variation, known as Local or Intra-die variation, has become important for logic and memory. Local variations are primarily the result of variations in the number of dopant atoms in the channel of CMOS transistors. To achieve ultra-low power, ICs are being designed for VDD by Rahul Rithe.
S.M.
40
Mayo, John Patrick. "Morphological design methodology of rugged underactuated gripper." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104136.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 63-65).
The purpose of this research is to extend the design tools for robust underactuated hand design. Disaster response robots operate in highly unstructured environments where they need to dynamically move and interface to successfully fulfill their task. Historically robotic hands have been optimized for grasp strength, robustness, lightness, but not a combination of all of these factors. This thesis proposes key design requirements for disaster response robot hands and explains the design of the HERMES humanoid robotic system hand that balances these factors for versatility. Not only is it used for grasping, but a unique metal backbone allows it to be used as a foot also. Additionally, base modeling is presented for predicting the finger contact forces based on geometry of the grasp object and input tension to the hand. Trends in the number of fingers for practical disaster tasks are explored. The major purpose in the design of this hand is to be able to perform dynamic tasks such as swinging an ax which induces a moment reaction within the hand. For this loading condition, the maximum allowable reaction force scales quadratically with number of fingers, whereas tasks that only apply normal or shear forces to the hand scale linearly. The model shows that the HERMES hand can handle a 0.75 kg ax and door with 512 N of dynamic pull force. These models and design can be used for optimizing characteristics of future robotic hands, especially in the disaster response realm.
by John Patrick Mayo.
S.M.
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Carrus, Justin William. "Curved brick design methodology and manufacturing system." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118741.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.Cataloged from PDF version of thesis.
Includes bibliographical references (page 83).
For many people in developing contexts, the financial expense of construction can be overwhelming. There is a need for more appropriate technologies for low-cost construction. This thesis presents a concise review of construction technologies and then offers a design methodology for creating curved, interlocking brick geometries that can be produced more accurately than existing bricks. The increase in dimensional accuracy is able to dramatically reduce the cost of construction in developing areas. A design is then offered for a low-cost press for these brick geometries that can be produced by local fabricators in developing areas.
by Justin William Carrus.
S.M.
42
Ritchie, Paul Andrew 1960. "A systematic, experimental methodology for design optimization." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276698.
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Much attention has been directed at off-line quality control techniques in recent literature. This study is a refinement of and an enhancement to one technique, the Taguchi Method, for determining the optimum setting of design parameters in a product or process. In place of the signal-to-noise ratio, the mean square error (MSE) for each quality characteristic of interest is used. Polynomial models describing mean response and variance are fit to the observed data using statistical methods. The settings for the design parameters are determined by minimizing a statistical model. The model uses a multicriterion objective consisting of the MSE for each quality characteristic of interest. Minimum bias central composite designs are used during the data collection step to determine the settings of the parameters where observations are to be taken. Included is the development of minimum bias designs for various cases. A detailed example is given.
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Eriksson, Jonas. "Partitioning methodology validation for embedded systems design." Thesis, Linköpings universitet, Programvara och system, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-129332.
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As modern embedded systems are becoming more sophisticated the demands on their applications significantly increase. A current trend is to utilize the advances of heterogeneous platforms (i.e. platform consisting of different computational units (e.g. CPU, FPGA or GPU)) where different parts of the application can be distributed among the different computational units as software and hardware implementations. This technology can improve the application characteristics to meet requirements (e.g. execution time, power consumption and design cost), but it leads to a new challenge in finding the best combination of hardware and software implementation (referred as system configuration). The decisions whether a part of the application should be implemented in software (e.g. as C code) or hardware (e.g. as VHDL code) affect the entire product life-cycle. This is traditionally done manually by the developers in the early stage of the design phase. However, due to the increasing complexity of the application the need of a systematic process that aids the developer when making these decisions to meet the demands rises. Prior to this work a methodology called MULTIPAR has been designed to address this problem. MULTIPAR applies component-/model-based techniques to design the application, i.e. the application is modeled as a number of interconnected components, where some of the components will be implemented as software and the remaining ones as hardware. To perform the partitioning decisions, i.e. determining for each component whether it should be implemented as software or hardware, MULTIPAR proposes a set of formulas to calculate the properties of the entire system based on the properties for each component working in isolation. This thesis aims to show to what extent the proposed system formulas are valid. In particular it focuses on validating the formulas that calculate the system response time, system power consumption, system static memory and system FPGA area. The formulas were validated trough an industrial case study, where the system properties for different system configurations were measured and calculated by applying these formulas. The measured values and calculated values for the system properties were compared by conducting a statistical analysis. The case study demonstrated that the system properties can be accurately calculated by applying the system formulas.
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Myers, Emily Anne. "Improving Non-nutritive Sweetener Study Design Methodology." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/97991.
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Non-nutritive sweeteners (NNS) are frequently used as substitutes for added sugars. NNS are difficult to study due to the inability to accurately measure the amounts individuals consume, as well as limitations in study design and methods, including reliance on observational study designs, the use of diet soda as a proxy of total NNS intake, and the grouping of NNS into a single category rather than studying NNS as individual products. New dietary assessment methods and improved study design and methods are needed to advance researchers' abilities to study NNS and their impact on consumers' health. The objectives of this dissertation were to 1) determine validity and reproducibility of a novel NNS food frequency questionnaire (NNS-FFQ), 2) develop methodology for an objective NNS urinary biomarker, 3) identify an appropriate carrier for NNS intake in studies, and 4) examine the literature on the relationship between NNS and weight-related outcomes based on study design and methods.
Objectives 1 and 2: participants (n=125) completed three 24-hr dietary recalls, the NNS-FFQ, and 2 24-hr urine samples. NNS intake via NNS-FFQ and recalls were compared using Bland-Altman analyses, with agreement levels ranging from 92.7-99.2% for individual NNS types and total intake. The NNS biomarker methodology was developed using ultra performance liquid chromatography (UPLC-MS/MS), which analyzes each sample for the presence of NNS and related metabolites. This method observed a range from very strong presence of NNS to not detectable, indicating that this biomarker could identify specific NNS consumption (n=9). Objective 3: a sensory evaluation (n=67) was conducted to identify if applesauce or water was a more appropriate carrier for NNS for future interventions. Applesauce was preferred (sucralose=83.6%; aspartame=79.1%; stevia=74.6%) significantly more than water (p≤0.001), indicating that applesauce could be used as an acceptable carrier of NNS in research studies. Objective 4: a systematic literature review focusing on study design and methods used in investigations on NNS and weight-related outcomes found that 81% of RCT had improved weight outcomes, while 76% of observational studies had higher weight outcomes. Improving NNS study design and methods will increase the quality of research conducted on NNS and related health outcomes.Ph. D.
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Smith, Bonita P. "Cycloaddition : fragmentation methodology in steroidal hormone design." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/6364.
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Ding, Mingwei. "High Level Design Methodology for Reconfigurable Systems." Ohio University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1131117147.
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Saha, Sankalita. "Design methodology for embedded computer vision systems." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7748.
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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.Thesis research directed by: Dept. of Computer and Electrical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Fan, Xin. "GALS design methodology based on pausible clocking." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2014. http://dx.doi.org/10.18452/16953.
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Globally Asynchronous Locally Synchronous (GALS) Design ist eine Lösung zur Skalierbarkeit und Modularität für die SoC-Integration. Heutzutage ist GALS-Design weit in der Industrie angewendet. Die meisten GALS-Systeme basieren auf Dual-Clock-FIFOs für die Kommunikation Zwischen Taktdomänen. Um Leistungsverluste aufgrund der Synchronisationslatenzzeit zu vermindern, müssen die On-Chip-FIFOs ausreichend groß sein. Dies führt jedoch oft zu erheblichen Kosten-Hardware. Effiziente GALS- Lösungen sind daher vonnöten. Diese Arbeit berichtet unsere neuesten Fortschritte in GALS Design, das auf der Pausierenden Taktung basiert. Kritische Designthemen in Bezug auf Synchronisation-szuverlässigkeit bzw. Kommunikationsfähigkeit sind systematisch und analytisch un-tersucht. Ein lose gekoppeltes GALS Data-Link-Design wird vorgeschlagen. Es unter-stützt metastabilitätsfreie Synchronisation für Sub-Takt-Baum Verzögerungen. Außer-dem unterstützt es kontinuierliche Datenübertragung für High-Throughput-Kommuni-kation. Die Rosten hinsichtlich Energie verbrauch und Chipfläche sind marginal. GALS Design ist eingesetzt, um digitales On-Chip Umschaltrauschen zu verringern. Plesiochron Taktung mit balanciertem Leistungsverbrauch zwischen GALS Blöcken wird insbesondere untersucht. Für M Taktbereiche wird eine Reduzierung um 20lgM dB für die spektralen Spitzen des Versorgungsstroms bei der Takt-Grundfrequenz theoretisch hergcleitet. Im Vergleich zu den bestehenden synchronen Lösungen, geben diese Methode eine Alternative, um das digitale schaltrauschen effektiv zu senken. Schließlich wurde die entwickelte GALS Design Methodik schon bei reale Chip-Implementierungen angewendet. Zwei komplizierte industriell relevante Test-Chips, Lighthouse und Moonrake, wurden entworfen und mit State-Of-The-Art-Technologien hergestellt. Die experimentellen Ergebnisse bzw.Globally asynchronous locally synchronous (GALS) design presents a solution of scalability and modularity to SoC integration. Today, it has been widely applied in the industry. Most of the GALS systems are based on dual-clock FIFOs for clock domain crossing. To avoid performance loss due to synchronization latency, the on-chip FIFOs need to be sufficiently large. This, however, often leads to considerable hardware costs. Efficient design solutions of GALS are therefore in great demand. This thesis reports our latest progress in GALS design bases on pausible clocking. Critical design issues on synchronization reliability and communication performance are studied systematically and analytically. A loosely-coupled GALS data-link design is proposed. It supports metastability-free synchronization for sub-cycle clock-tree delay, and accommodates continuous data transfer for high-throughput communication. Only marginal costs of power and silicon area are required. GALS design has been employed to cope with the on-chip digital switching noise in our work. Plesiochronous clocking with power-consumption balance between GALS blocks is in particular explored. Given M clock domains, a reduction of 20lgM dB on the spectral peaks of supply current at the fundamental clock frequency is theoretically derived. In comparison with the existing synchronous design solutions, it thus presents an alternative to effective attenuation of digital switching noise. The developed GALS design methodology has been applied to chip implementation. Two complicated industry-relevant test chips, named Lighthouse and Moonrake, were designed and fabricated using state-of-the-art technologies. The experimental results as well as the on-chip measurements are reported here in detail. We expect that, our work will contribute to the practical applications of GALS design based on pausible clocking in the industry.
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Benkamoun, Nadège. "Systemic design methodology for changeable manufacturing systems." Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22723/document.
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Les systèmes de production sont devenus des systèmes de grande échelle dont la complexité est accentuée par des contextes marqués de plus en plus par le changement. La capacité des systèmes a répondre au changement – appelée également changea-bilité – est reconnue comme étant une propriété essentielle pour leur cycle de vie, aussi bien dans le domaine des systèmes de production que dans le domaine de la conception en ingénierie. Au regard de la complexité des systèmes de production changeables, la méthodologie proposée par cette thèse a pour objectif de supporter la change-abilité dans la conception en souscrivant au domaine de l’ingénierie des systèmes. La première contribution est un formalisme pour la modélisation des systèmes changeables étayé d’après les principes de la conception systémique. Les concepts de flexibilité et de reconfigurabilité ne sont ici pas limités à des composants organiques du système, mais englobent l’ensemble des artefacts d’ingénierie dans le domaine du problème (exigences) et le domaine de la solution (blocs structurels). La deuxième contribution est une méthodologie pour la conception et la gestion des systèmes changeables. Elle repose sur un modèle du cycle de vie des systèmes changeables où des phases de conception des capacités de change-abilité du système s’alternent avec des phases de reconception tirant bénéfice de ces capacités existantes. Ces processus complémentaires garantissent la cohérence entre les décisions de conception pour intégrer et réutiliser des capacités de change-abilité, augmentant alors leurs potentiels tout au long du cycle de vie des systèmes complexes. Les concepts et les méthodologies développés ont été validés par des projets de conception de systèmes de production chez un équipementier automobile. Enfin, des développements possibles d’outils d’aide à la conception supportant la méthodologie proposée sont discutésManufacturing systems have become large scale systems with increasing complexity particularly magnified by highly changing contexts. The system’s ability to cope with change (i.e. changeability) is recognized as a critical lifecycle property in the manufacturing system and engineering design domains. Given the complexity of changeable manufacturing systems, the proposed methodology of this dissertation aims to support design of changeability in subscribing to the domain of system engineering. The first contribution is a formalism for modeling changeability in a systemic way. Flexibility and reconfigurability paradigms are not limited to physical components of the system, but to the overall system architecture that encompasses all engineering artifacts relating to the designed system in both the requirements and physical solution domains. The second contribution is the methodology for the design and the management of changeability. The methodology utilizes a lifecycle model for changeable systems, in which design for changeability phases alternate with re-design phases that embrace and benefit from the existing changeability capabilities. These complementary processes allow a better consistency between design decisions to embed and reuse changeability, increasing changeability potential during the lifecycle of complex systems. The developed concepts and methodologies are validated in manufacturing system design projects from an automotive supplier. Finally, perspectives on design tools assisting the proposed methodology are discussed
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Ramilli, Marco <1983>. "A Design Methodology for Computer Security Testing." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/4438/4/Marco_Ramilli_Dissertation.pdf.
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The field of "computer security" is often considered something in between Art and Science. This is partly due to the lack of widely agreed and standardized methodologies to evaluate the degree of the security of a system. This dissertation intends to contribute to this area by investigating the most common security testing strategies applied nowadays and by proposing an enhanced methodology that may be effectively applied to different threat scenarios with the same degree of effectiveness.
Security testing methodologies are the first step towards standardized security evaluation processes and understanding of how the security threats evolve over time. This dissertation analyzes some of the most used identifying differences and commonalities, useful to compare them and assess their quality.
The dissertation then proposes a new enhanced methodology built by keeping the best of every analyzed methodology. The designed methodology is tested over different systems with very effective results, which is the main evidence that it could really be applied in practical cases. Most of the dissertation discusses and proves how the presented testing methodology could be applied to such different systems and even to evade security measures by inverting goals and scopes. Real cases are often hard to find in methodology' documents, in contrary this dissertation wants to show real and practical cases offering technical details about how to apply it.
Electronic voting systems are the first field test considered, and Pvote and Scantegrity are the two tested electronic voting systems. The usability and effectiveness of the designed methodology for electronic voting systems is proved thanks to this field cases analysis. Furthermore reputation and anti virus engines have also be analyzed with similar results.
The dissertation concludes by presenting some general guidelines to build a coordination-based approach of electronic voting systems to improve the security without decreasing the system modularity.