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1
Aydiner, Mustafa Guclu. "Grounding Design Analysis." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610408/index.pdf.
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This thesis investigates problematic cases in AC substation grounding system design. Particularly, the grounding design for substations that are built on high resistivity soil is considered. Here, possible physical rectification schemes are introduced and compared for their effectiveness from safety and cost efficiency perspectives. For this comparison, the CYMGRD program (a finite element analysis tool for AC substation grounding) is used for detailed analysis of the various schemes. An additional computer program is developed to implement the formulations of the related AC substation standards (IEEE, IEE, and Turkish National Regulations). The output of this program is compared with the finite element analysis of the high-resistivity-soil rectification schemes to investigate the validity of the formulations in these standards.
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Chivers, Howard Robert. "Security design analysis." Thesis, University of York, 2006. http://etheses.whiterose.ac.uk/9885/.
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Al-Janabi, Mohammed. "Design, analysis and evaluation of bandpass sigma-delta modulators." Thesis, University of Westminster, 2000. https://westminsterresearch.westminster.ac.uk/item/94359/design-analysis-and-evaluation-of-bandpass-sigma-delta-modulators.
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Gall, Aimee Marie. "A systems analysis and design tool for product design." Connect to resource, 2008. http://hdl.handle.net/1811/31782.
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Hrehovcsik, Micah. "An analysis of design thinking in applied game design." Thesis, Bournemouth University, 2018. http://eprints.bournemouth.ac.uk/31584/.
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The design of an applied game is complicated by needing to balance its usefulness, game- play experience, and sustainability. In the applied design process, game designers occupy a pivotal position between game design knowledge, development team, co-designers, and players. From this complex web of interaction, the designer is still expected to invent a new game. From a design investigation perspective, there is an opportunity to expand our general knowledge of game design by exploring first-hand the design and development of an applied game. The aim of this practice-led PhD research was to design and develop a pervasive multi- player applied video game as a tool for psychiatric healthcare workers treating patients suffering from depression and psychosis. The applied game Moodbot was co-designed during an intensive iterative process with healthcare experts and patients from Altrecht Mental Healthcare Institute and developers from the HKU University of the Arts. The following exegesis highlights game design knowledge gained from the development of the applied game Moodbot co-created with psychiatric healthcare workers, psychiatric patients, game artists, programmers, audio designers, and game designers. A design decision tool based on epistemic frameworks is used in this dissertation to structure and explore the applied game decision-making that shaped Moodbot and specifically examines a critical design decision moment, which looks at the influences from technology and co-designers on the design and designer.
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Franco, Nicola. "Distributed Observer Analysis and Design." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19642/.
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A Distributed observer design is described for estimating the state of a continuous-time, input free, linear system. This thesis explains how to construct the local estimators, which comprise the observer inputs and outputs, and it is shown which are the requirements to deal with this structure. Every agent senses an output signal from the system and distributes it across a fixed-time network to its neighbors. The information flow increases the capability of each agent to estimate the state of the system and uses collaboration to improve the quality of data. The proposed solution has several positive features compared to recent results in the literature, which include milder assumptions on the network connectivity and the maximum dimension of the state of each observer does not exceed the order of the plant. The conditions are reduced to certain detectability requirements for each cluster of agents in the network, where a cluster is identified as a subset of agents that satisfy specific properties. Instead, the dimension of each observer is reduced to the number of possible observable states of the system, collected by the agent and by the neighbors.
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Keroglou, Eleftherios I. "Analysis and design of retroreflectors." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA341480.
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Thesis (M.S. in Electrical Engineering) Naval Postgraduate School, December 1997."December 1997." Thesis advisor(s): David C. Jenn. Includes bibliographical references (p. 49). Also available online.
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Aydinli, Aykut. "Interface Design: Personal Preference Analysis." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610035/index.pdf.
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This thesis analyzes the relationship between users&rsquocharacteristics and users&rsquo
interface preferences. An online survey is developed for this study. This survey composed of two types of questions: (1) users&rsquo
personal information such as age, gender, country, cognitive structure, and also computer experience and (2) user interface elements. More than 2,500 participants from 120 different countries throughout the world completed our survey. Results were analyzed using cross tables. Our findings show that there is a relationship between users&rsquo
characteristics and users&rsquo
interface preferences. In the presence of this relationship, an artificial neural network model is developed for the estimation of the interface preferences based on the user characteristics.
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Ham, William K. "Telemetry systems analysis and design." Thesis, Monterey, California: Naval Postgraduate School, 2000. http://hdl.handle.net/10945/7808.
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Approved for public release; distribution is unlimitedThe Navy has a valuable opportunity to improve its own products and operations efficiency by showing its future leaders and designers how to design effective and viabletelemetry, tracking, and commanding (TT&C) systems, and their operation. One system is the FLTSAT military communications constellation of spacecraft, one of which has been a static display at the Naval Postgraduate School (NPS) until June, 2000. The primary objective was to make this spacecraft operational and thus provide a new operational spacecraft laboratory for other NPS students. This thesis may also be used as a primer for the space engineering or space operations student regarding TT&C systems design. Great effort has been taken to document and discuss current design practices and standards adopted by DOD laboratories, test facilities, and operations centers. A TT&C system designed for a spacecraft incorporating all the traditional subsystems (payload, thermal, structural, power, TT&C, attitude control) is included.
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Hunt, Kristen. "Design Analysis of Roller Coasters." Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-theses/250.
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Each year 300 million people ride roller coasters at amusement parks across the United States. Although they are meant for joy and entertainment, the design is very crucial and regulated. Understanding the interaction between components and humans can help create a more thrilling and safer ride. This study researched the design of the course and the structural supports. A unique roller coaster was designed, investigating the relationship between velocity and G forces. With the profile design complete, the corresponding forces resulting from the track and train weight and train movement were calculated to determine the required dimensions of the structural support columns. This work investigated the relationship between the features of the roller coaster and the material properties of the structural supports, determining which are most impactful for the loading conditions. These results can be used to determine the required properties of a roller coaster’s structural system to maximize the material usage to minimize resources and cost.
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Van, der Merwe Marius. "Harmonic mixer analysis and design." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52872.
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Thesis (MScEng) -- Stellenbosch University, 2002.Some digitised pages may appear illegible due to the condition of the original hard copy.
ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their output spectra also have certain characteristics that make them ideal for a variety of applications. The operation of the harmonic mixer is investigated, and the mixer is analyzed using an extension of the classic mixer theory. The synthesis of harmonic mixers is also investigated, and a design procedure is proposed for the design and realization of a variety of harmonic mixers. This design procedure is evaluated with the design and realization of two harmonic mixers, one in X-band and the other in S-band. Measurements suggest that the procedure is successful for the specific applications.
AFRIKAANSE OPSOMMING: Harmoniese mengers kan by hoer frekwensies gebruik word as gewone mengers deurdat hulle gebruik maak van ‘n harmoniek van die LO. ‘n Hoe-frekwensie, hoe-drywing LO word dus nie benodig nie. Die mengers se uittreespektra het ook ‘n aantal karakteristieke wat hulle goeie kandidate maak vir ‘n verskeidenheid van toepassings. Die werking van die harmoniese menger word ondersoek deur uit te brei op die klassieke menger-teorie. Die ontwerp van die harmoniese menger word vervolgens ondersoek, waama ‘n ontwerpsprosedure voorgestel word vir die ontwerp van ‘n verskeidenheid van harmoniese mengers. Hierdie prosedure word getoets met die ontwerp en realisering van twee harmoniese mengers, een in X-band en die ander in S-band. Vanuit die metings is dit duidelik dat die ontwerpsprosedure geslaagd is vir die spesifieke geval.
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Edwards, Mogammad Sharief. "Analysis and design as bricolage." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/19893.
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Information Systems in generally acknowledged to be a complex field and many studies over time have quoted significant failure statistics. This paper seeks to answer the question - How to more appropriately evaluate and select information systems design (ISD) methods that better enable successful design outcomes. The research covers literature relating analysis and design, information systems design methods, complexity, ontology and conceptual modelling and how they relate to ISD. This research was conducted within a larger national research project aiming to improve organising practices within IT in organisations. To this end the research followed a participatory action research approach underpinned by systems thinking theoretical perspective. What emerged out of this study was the appreciation for the bricolage that takes during an analysis or design effort - this perspective highlighted the following factors that can enable improved method evaluation and selection, namely: Epistemology, Contextual Influences and Social Action. These factors are shown to operate in dialectic process that if engaged with can provide insight into what an appropriate method can be.
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Clayton, Gary Alan. "Engine bearing analysis and design." Thesis, University of Leeds, 1990. http://etheses.whiterose.ac.uk/4396/.
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The work described in this thesis, Engine Bearing Analysis and Design, is directed towards the prediction of the performance characteristics of full central circumferentially grooved journal bearings. Due to the complexities of a full solution of such bearings, several simplifications have been made, including the assumptions of rigid circular journal and bearing and that a thin isoviscous Newtonian lubricant exists between the bounding solids. The work presented can be split into three main areas of research. These are theoretical predictions in relation to the performance predictions of steadily and dynamically loaded cases, and the subsequent verification of the transient solution techniques developed by carrying out an extensive experimental investigation. The tests were carried out on the front main bearing of a single cylinder engine; the Ricardo Hydra. For the research into the performance of steadily loaded journal bearings, extensive design charts have been generated for the dimensionless load and shear power loss variation with eccentricity ratio at a range of dimensionless oil supply pressures. The total oil flow rate data, considering coupled surface velocities and oil supply pressure, was found to be represented accurately by a single curve. There was only a 4% difference between this and the pressure flow equation. The cavitation algorithm of Elrod and Adams (1974) was used for this part of the research work, with a view to its extension to transient cases. However, the excessive time required for a solution point meant that it would be impractical for transient situation where it would be solved several hundred times for a complete journal orbit. Subsequent to the analysis of steadily loaded bearings, attention was focused on the solution of dynamically loaded cases. A simplified oil film history solution was developed which reduced the computer run time for a converged journal centre orbit considerably. In addition, simple preditive techniques have been developed based on the pressure flow equation and a fully flooded bearing for purposes of shear power loss predictions. This approach for the full central circumferentially grooved bearings considered gave excellent agreement with the more rigorous analysis. The transient analyses developed have been verified by comparison with a significonE amount of experimental data which was collected for the front main bearing of a single cylinder gasoline engine. It was found that simple expressions for the oil flow rate and power loss provided a good prediction of the experimental data. There was found to be no justification in carrying out a rigorous film history solution, and from a design point of view the range of tolerances on the journal and bearing could give a diametral bearing clearance which could vary by a factor of 2.4. This has a more significant effect on the bearing side leakage than any uncertainties involved in the performance predictions themselves.
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Macías, Anaya Néstor Alejandro 1971. "Engineering design leadtime drivers analysis." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9431.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, 1999.Includes bibliographical references (leaves 73-74).
Leadtime is one of the most important performance metrics in the engineering design organization of General Motors' Truck Group. Because of the many variables that influence leadtime. It is not clear where efforts should be focused to improve leadtime. Quantitative models for the variables affecting leadtime were developed and by quantifying their relative impact on Overall during the key variables were identified. Key variables address time spent in design rework. time waiting for information/definition, time waiting for resources, and the base design time for a new vehicle program. The variables influencing leadtime are captured in an influence diagram. The influence diagram shows the relationships among the variables and is supported by quantitate models that can demonstrate design leadtime sensitivity to changes in the model's variables and parameters. In addition. the analysis provides qualitative insight which is useful for framing recommendations about specific improvement tasks or projects. The analysis of this thesis focused on leadtime delays. The variables related to the turnover of certain designers. to the tome waiting for information from design center (styling) and to the time waiting for information from suppliers are the key drivers of leadtime for the engineering systems on the critical path of a program. Moreover. the considerable variance that is observed in overall leadtime indicates that control of variability in the company's development processes will also lead to significant system improvements. A second part of this thesis includes an analysis of action plans 10 reduce restaffing delays.
by Néstor Alejandro Macías Anaya.
S.M.
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Guo, Jia. "Uncertainty analysis and sensitivity analysis for multidisciplinary systems design." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/Guo_09007dcc8066e905.pdf.
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Thesis (Ph. D.)--Missouri University of Science and Technology, 2008.Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 28, 2009) Includes bibliographical references.
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Gausepohl, Kimberly Ann. "The Storytelling + Design Framework: Design Guidance for the Concept Phase of Medical Device Design." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/38579.
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The National Institute for Occupational Safety and Health’s (NIOSH) “Prevention through Design” (PtD) initiative encourages the exploration of different methods to foster dialogue between engineers and healthcare workers. Although engineers are encouraged to follow a user-centered design (UCD) process to identify user needs (ANSI/AAMI, 2009; IEC, 2007), NORA (2009) warns that engineers may “fail to get the full range of healthcare worker input on the usability of a device”. The primary goal of this research was to present storytelling as an elicitation method that addressed the PtD call for methods that improve usability within healthcare.
This work provides three contributions to the PtD initiative. First, a conceptual model for the role of storytelling in design, which represents a synthesis of narrative and design research, is presented. The conceptual model explicitly states how the elicitation and analysis of stories results in the identification of a design opportunity that addresses user needs. Second, the Design + Storytelling framework, which guides designers’ use of storytelling, is presented. An instantiation of the framework specific to the identification of a design opportunity within an emergency room (ER) is investigated to determine the framework’s impact on design. Findings resulted in the study’s third contribution: design guidance comprised of storytelling guidelines, decision support tools for storytelling method selection, and traceability support for design evaluation.
The investigation of the framework focused on two primary stages: (1) story elicitation and (2) story analysis. Storytelling sessions, which varied in context, collected 573 stories (i.e., 441 habitual, 132 hypothetical) from 28 ER nurses. Qualitative analysts used the framework’s instructions to identify and specify 383 user needs within the narratives. Empirical comparisons of the compiled needs across groups informed decision rules for elicitation method selection. The impact of the framework’s analysis instructions during design practice was investigated. Student design teams analyzed nurses’ safety stories to create a conceptual design for an identified design opportunity. Findings indicated a trend for stakeholder experts to rank conceptual designs created by teams with the instructions as more usable than teams without the framework’s instructions. The theoretical and practical exploration indicated a positive impact on design.Ph. D.
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PEDRO, YAEL. "ANALYSIS OF DESIGN ASPECTS IN ACTIVE SPORTSWEAR." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1011739695.
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Wang, Chenjie. "The design exploration method for adaptive design systems." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28084.
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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.Committee Chair: Janet K. Allen; Committee Member: Benjamin Klein; Committee Member: Farrokh Mistree; Committee Member: Seung-Kyum Choi.
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Pålsson, Nicholas. "Guiding the viewer using visual components : Eye-tracking for visual analysis." Thesis, Luleå tekniska universitet, Institutionen för konst, kommunikation och lärande, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74563.
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Are there ways to assess the objective value of the image? By first breaking down visual components and visual structure that are commonly used in image construction, this report will try to predict how a audience chooses to view an image. Through eye-tracking technology using a webcam to track the subjects' eye movement, these visual components validation will be tested. The result is presented as heatmaps; which illustrate the point of attention of the audience. The result is then compared with a hypothesis that was compiled in preparation for the examination. The result of the survey shows that potential off using eye-tracking for analysis, though the technology of using a web camera might not be the most suitable.
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Adnan, Md Asif, and Ahmed Shehata. "Stress Analysis Validation for Gear Design." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-16862.
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Gear stress analysis and understanding the effect of misalignment and microgeometry is important for gear designers and for those who work in gear maintenance. The misalignment can lead to the higher stress acting in one side of the gear tooth and the micro-geometry modification can improve the stress distribution in the gear teeth. In this research, a helical gear pair was modeled using three different software and tools; LDP, KISSsoft and Abaqus. Three different cases were modeled to study the effect of misalignment and microgeometry. Finally, the results from different tools were presented and discussed. It was observed that the tooth contact analysis software resulted in significantly higher stresses than the FE software. The results have been discussed to understand the differences in the cases obtained from the used tools. The results showed how bad is the effect of the misalignment on the gear mesh and the stress distribution and how the microgeometry modifications are used to compensate that effect.
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Martin, Erik H. "Compact CO2 laser design and analysis." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA366858.
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Thesis (M.S. in Applied Physics) Naval Postgraduate School, June 1999."June 1999". Thesis advisor(s): D. Scott Davis, Robert C. Harney. Includes bibliographical references (p. 95-98). Also available online.
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Zhou, Shuo. "Static timing analysis in VLSI design." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3207193.
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Thesis (Ph. D.)--University of California, San Diego, 2006.Title from first page of PDF file (viewed May 18, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 110-113).
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Wu, Hao. "Analysis and Design of Vehicular Networks." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7639.
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Advances in computing and wireless communication technologies have increased interest in smart vehicles, vehicles equipped with significant computing, communication and sensing capabilities to provide services to travelers. Smart vehicles can be exploited to improve driving safety and comfort as well as optimize surface transportation systems. Wireless communications among vehicles and between vehicles and roadside infrastructures represent an important class of vehicle communications.
One can envision creating an integrated radio network leveraging various wireless technologies that work together in a seamless fashion. Based on cost-performance tradeoffs, different network configurations may be appropriate for different environments. An understanding of the properties of different vehicular network architectures is absolutely necessary before services can be successfully deployed. Based on this understanding, efficient data services (e.g., data dissemination services) can be designed to accommodate application requirements.
This thesis examines several research topics concerning both the evaluation and design of vehicular networks.
We explore the properties of vehicle-to-vehicle (v2v) communications. We study the spatial propagation of information along the road using v2v communications. Our analysis identifies the vehicle traffic characteristics that significantly affect information propagation. We also evaluate the feasibility of propagating information along a highway.
Several design alternatives exist to build infrastructure-based vehicular networks. Their characteristics have been evaluated in a realistic vehicular environment. Based on these evaluations, we have developed some insights into the design of future broadband vehicular networks capable of adapting to varying vehicle traffic conditions.
Based on the above analysis, opportunistic forwarding that exploit vehicle mobility to overcome vehicular network partitioning appears to be a viable approach for data dissemination using v2v communications for applications that can tolerate some data loss and delay. We introduce a methodology to design enhanced opportunistic forwarding algorithms. Practical algorithms derived from this methodology have exhibited different performance/overhead tradeoffs.
An in-depth understanding of wireless communication performance in a vehicular environment is necessary to provide the groundwork for realizing reliable mobile communication services. We have conducted an extensive set of field experiments to uncover the performance of short-range communications between vehicles and between vehicles and roadside stations in a specific highway scenario.
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Kocak, Onur. "Design And Analysis Of Hash Functions." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610769/index.pdf.
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Hash functions are cryptographic tools that are used in various applications like digital signature, message integrity checking, password storage and random number generation. These cryptographic primitives were, first, constructed using modular arithmetical operations which were popular at that time because of public key cryptography. Later, in 1989, Merkle and Damgard independently proposed an iterative construction method. This method was easy to implement and had a security proof. MD-4 was the first hash function to be designed using Merkle-Damgard construction. MD-5 and SHA algorithms followed MD-4. The improvements in the construction methods accordingly resulted in improvements and variations of cryptanalytic methods. The series of attacks of Wang et al. on MD and SHA families threaten the security of these hash functions. Moreover, as the standard hashing algorithm SHA-2 has a similar structure with the mentioned hash functions, its security became questionable. Therefore, NIST announced a publicly available contest to select the new algorithm as the new hash standard SHA-3.
The design and analysis of hash functions became the most interesting topic of cryptography. A considerable number of algorithms had been designed for the competition. These algorithms were tested against possible attacks and proposed to NIST. After this step, a worldwide interest started to check the security of the algorithms which will continue untill 4th quarter of 2011 to contribute to the selection process.
This thesis presents two important aspects of hash functions: design and analysis. The design of hash functions are investigated under two subtopics which are compression functions and the construction methods. Compression functions are the core of the hashing algorithms and most of the effort is on the compression function when designing an algorithm. Moreover, for Merkle-Damgard hash functions, the security of the algorithm depends on the security of the compression function. Construction method is also an important design parameter which defines the strength of the algorithm. Construction method and compression function should be consistent with each other. On the other hand, when designing a hash function analysis is as important as choosing designing parameters. Using known attacks, possible weaknesses in the algorithm can be revealed and algorithm can be strengthened. Also, the security of a hash function can be examined using cryptanalytic methods. The analysis part of the thesis is consisting of various generic attacks that are selected to apply most of the hash functions. This part includes the attacks that NIST is expecting from new standard algorithm to resist.
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Decker, Gero. "Design and analysis of process choreographies." Phd thesis, Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2010/4076/.
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With the rise of electronic integration between organizations, the need for a precise specification of interaction behavior increases. Information systems, replacing interaction previously carried out by humans via phone, faxes and emails, require a precise specification for handling all possible situations. Such interaction behavior is described in process choreographies. Choreographies enumerate the roles involved, the allowed interactions, the message contents and the behavioral dependencies between interactions. Choreographies serve as interaction contract and are the starting point for adapting existing business processes and systems or for implementing new software components.
As a thorough analysis and comparison of choreography modeling languages is missing in the literature, this thesis introduces a requirements framework for choreography languages and uses it for comparing current choreography languages. Language proposals for overcoming the limitations are given for choreography modeling on the conceptual and on the technical level.
Using an interconnection modeling style, behavioral dependencies are defined on a per-role basis and different roles are interconnected using message flow. This thesis reveals a number of modeling "anti-patterns" for interconnection modeling, motivating further investigations on choreography languages following the interaction modeling style. Here, interactions are seen as atomic building blocks and the behavioral dependencies between them are defined globally. Two novel language proposals are put forward for this modeling style which have already influenced industrial standardization initiatives.
While avoiding many of the pitfalls of interconnection modeling, new anomalies can arise in interaction models. A choreography might not be realizable, i.e. there does not exist a set of interacting roles that collectively realize the specified behavior. This thesis investigates different dimensions of realizability.Elektronische Integration zwischen Organisationen erfordert eine präzise Spezifikation des Interaktionsverhaltens: Informationssysteme, die Kommunikation per Telefon, Fax und Email ablösen, können nicht so flexibel und selbständig auf Ausnahmesituationen reagieren wie Menschen. Choreographien ermöglichen es, Interaktionsverhalten genau zu spezifizieren. Diese Modelle zählen die beteiligten Rollen, die erlaubten Interaktionen, Nachrichteninhalte und Verhaltensabhängigkeiten auf und dienen somit als Interaktionsvertrag zwischen den Organisationen. Auch als Ausgangspunkt für eine Anpassung existierender Prozesse und Systeme sowie für die Implementierung neuer Softwarekomponenten finden Choreographien Anwendung. Da ein Vergleich von Choreographiemodellierungssprachen in der Literatur bislang fehlt, präsentiert diese Arbeit einen Anforderungskatalog, der als Basis für eine Evaluierung existierender Sprachen angewandt wird. Im Kern führt diese Arbeit Spracherweiterungen ein, um die Schwächen existierender Sprachen zu überwinden. Die vorgestellten Erweiterungen adressieren dabei Modellierung auf konzeptioneller und auf technischer Ebene. Beim Verlinkungsmodellierungsstil werden Verhaltensabhängigkeiten innerhalb der beteiligten Rollen spezifiziert und das Interaktionsverhalten entsteht durch eine Verlinkung der Kommunikationsaktivitäten. Diese Arbeit stellt einige "Anti-Pattern" für die Verlinkungsmodellierung vor, welche wiederum Untersuchungen bzgl. Choreographiesprachen des Interaktionsmodellierungsstils motivieren. Hier werden Interaktionen als atomare Blöcke verstanden und Verhaltensabhängigkeiten werden global definiert. Diese Arbeit führt zwei neue Choreographiesprachen dieses zweiten Modellierungsstils ein, welche bereits in industrielle Standardisierungsinitiativen eingeflossen sind. Während auf der einen Seite zahlreiche Fallstricke der Verlinkungsmodellierung umgangen werden, können in Interaktionsmodellen allerdings neue Anomalien entstehen. Eine Choreographie kann z.B. "unrealisierbar" sein, d.h. es ist nicht möglich interagierende Rollen zu finden, die zusammen genommen das spezifizierte Verhalten abbilden. Dieses Phänomen wird in dieser Arbeit über verschiedene Dimensionen von Realisierbarkeit untersucht.
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Witte, Holger. "Magnet design using finite element analysis." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491607.
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This thesis applies the method of finite element software to calculate pulsed high field magnets. The calculations address the structural and thermal load of pulsed magnets during discharge and at peak field. The most successful currently-used coil designs from different magnet laboratories are assessed with these methods. The results are compared against wellestablished analytic programs; arising differences are discussed. Particular emphasis is on the coil designs developed for the pulsed field facility in the Clarendon Laboratory, Oxford, UK. The facility, named after Nikolas Kurti, is described and classified. The coil designs are based on a novel high strength copper-silver conductor, which is compared to other common conductors. In combination with the novel calculation methods this established a new quality of high magnetic fields: the local record was broken in March 2007 by creating the highest magnetic field to date in the Clarendon Laboratory. Present and future trends in pulsed magnet design are discussed and evaluated. These include a discussion of foil coils, braiding of conductors and the matching of conductors with suitable reinforcement. Particular emphasis is placed on the verification of the simulation results. To this end a finite element method is developed which can be used to predict the irreversible change of the inductance of pulsed magnets due to plastic deformation. Preliminary results of residual strains in a magnet using neutron scattering are also considered. Another focus is on reducing the cool-down time of pulsed magnets by using rapid cooling methods. The concept of the so-called 'cooling disc' is new in this respect. Experimental and theoretical results are contrasted with other methods. Other work has contributed to the design of the magnetic channel of the international Muon Ionization Cooling Experiment; this thesis gives a summary. The work comprises force calculations, quench considerations and magnetic shielding issues.
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Xia, Zhe. "Secure electronic voting : design and analysis." Thesis, University of Surrey, 2009. http://epubs.surrey.ac.uk/843264/.
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Voting systems have played an important role in human democracy for thousands of years. In traditional voting systems, all received votes are tallied manually. For large scale elections, this method is not only inefficient, but also error prone making it hard to provide a completely accurate result. An initial motivation for introducing mechanical or electronic support has been to provide efficient tallying and cost reduction. Although voting equipment, e.g. lever machines or DRE machines, can be designed under very strict standards, or independently verified by third parties, their internal workings are still hidden when they are used in an election. Thus, voters have to trust that the system will correctly tally the election. However, recent high-profile reports have exposed that some such equipment in fact suffers from a variety of security flaws. In recent years, thanks to the improvement of cryptographic techniques, researchers have found some mathematical solutions to design secure voting systems, in which security is the key feature; the correct behaviour of these systems can be verified publicly, without the loss of voter privacy. As a result, instead of trusting the provided equipment or election officials, voters can themselves verify that their votes have been correctly counted. This thesis has contributed to the research of secure voting systems in two aspects; First, it has analysed two existing secure voting systems, the Voting Ducks scheme by Kutylowski et al. and the Pret a Voter with Paillier encryption scheme by Ryan. The thesis has identified a number of security flaws within these two systems which were not previously known. Second, the thesis has introduced a number of contributions extending the design of the Pret a Voter protocols. Not only are the extended systems better equipped to handle different election methods, but also they enjoy more security features.
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Youssef, A. M. "Analysis and design of block ciphers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27864.pdf.
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Grindley, Robin. "The NUMAchine multiprocessor, design and analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0018/NQ45686.pdf.
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Jang, Beakcheol. "Wireless MAC Protocol Design and Analysis." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-05262009-175059/.
Full textAbstract:
Wireless networks are becoming very common due to their advantages such as rapid deployment and support for mobility. In this dissertation, we design and analyze the Medium Access Control (MAC) protocol for two popular wireless networks: Wireless Sensor Networks (WSNs) and Wireless Local Area Networks (WLANs). For WSNs, we design and analyze an energy efficient MAC protocols. Energy efficiency is a key design factor of a MAC protocol for WSNs. Existing preamble-sampling based MAC protocols have large overheads due to their preambles and are inefficient at large wakeup intervals. Synchronous scheduling MAC protocols minimize the preamble by combining preamble sampling and scheduling techniques; however, they do not prevent energy loss due to overhearing. In this dissertation, we present an energy efficient MAC protocol for WSNs, called AS-MAC, that avoids overhearing and reduces contention and delay by asynchronously scheduling the wakeup time of neighboring nodes. We also provide a multi-hop energy consumption model for AS-MAC. To validate our design and analysis, we implement the proposed scheme on the MICAz and TELOSB platforms. Experimental results show that AS-MAC considerably reduces energy consumption, packet loss and delay when compared with other energy efficient MAC protocols. For WLANs, we present a saturation throughput model for IEEE 802.11, the standard of WLAN, for a simple infrastructure scenario with hidden stations. Despite the importance of the hidden terminal problem, there have been a relatively small number of studies that consider the effect of hidden terminals on IEEE 802.11 throughput. Moreover, existing models are not accurate for scenarios with the short-term unfairness. In this dissertation, we present a new analytical saturation throughput model for IEEE 802.11 for a simple but typical infrastructure scenario with small number of hidden stations. Simulation results are used to validate the model and show that our model is extremely accurate. Lastly, we provide a saturation throughput model for IEEE 802.11 for the general infrastructure scenario with hidden stations. Simulation results show that this generalized model is reasonably accurate.
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Abdel-Haq, Ali H. "Analysis and design of box culverts." Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183037846.
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Maginot, Jeremy. "Sensitivity analysis for multidisciplinary design optmization." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/5667.
Full textAbstract:
When designing a complex industrial product, the designer often has to
optimise simultaneously multiple conflicting criteria. Such a problem does not usually
have a unique solution, but a set of non-dominated solutions known as Pareto
solutions. In this context, the progress made in the development of more powerful but
more computationally demanding numerical methods has led to the emergence of
multi-disciplinary optimisation (MDO). However, running computationally expensive
multi-objective optimisation procedures to obtain a comprehensive description of the
set of Pareto solutions might not always be possible.
The aim of this research is to develop a methodology to assist the designer in
the multi-objective optimisation process. As a result, an approach to enhance the
understanding of the optimisation problem and to gain some insight into the set of
Pareto solutions is proposed. This approach includes two main components. First,
global sensitivity analysis is used prior to the optimisation procedure to identify non-
significant inputs, aiming to reduce the dimensionality of the problem. Second, once a
candidate Pareto solution is obtained, the local sensitivity is computed to understand
the trade-offs between objectives. Exact linear and quadratic approximations of the
Pareto surface have been derived in the general case and are shown to be more
accurate than the ones found in literature. In addition, sufficient conditions to identify
non-differentiable Pareto points have been proposed. Ultimately, this approach
enables the designer to gain more knowledge about the multi-objective optimisation
problem with the main concern of minimising the computational cost.
A number of test cases have been considered to evaluate the approach. These
include algebraic examples, for direct analytical validation, and more representative
test cases to evaluate its usefulness. In particular, an airfoil design problem has been
developed and implemented to assess the approach on a typical engineering problem.
The results demonstrate the potential of the methodology to achieve a
reduction of computational time by concentrating the optimisation effort on the most
significant variables. The results also show that the Pareto approximations provide the
designer with essential information about trade-offs at reduced computational cost.
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Nell, Christopher Warren. "Automating meta-algorithmic analysis and design." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/38247.
Full textAbstract:
Sophisticated empirical methods based upon automated experimental analysis techniques drive the development of high-performance solvers for an increasing range of problems from industry and academia. However, tools implementing these methods are often difficult to develop and to use. This thesis describes work towards addressing this issue. First, we develop a formal description of meta-algorithmic problems, and use it as the basis for a framework supporting the development and application of a broad class of automated algorithm analysis and design techniques. Second, we describe the High-performance Algorithm Laboratory (HAL), an extensible software implementation of this framework that provides developers and users of automated empirical techniques with support for distributed execution, remote monitoring, data management, and statistical analysis of results. We use HAL to construct a suite of interoperable tools that implement a variety of automated empirical techniques, and demonstrate our approach by conducting a sequence of increasingly complex analysis and design tasks on state-of-the-art solvers for Boolean satisfiability and mixed-integer programming problems.
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Shen, Gang 1968. "Design and analysis of magnetic hydrocyclones." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61807.
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Maginot, Jeremy. "Sensitivity analysis for multidisciplinary design optimization." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/5667.
Full textAbstract:
When designing a complex industrial product, the designer often has to optimise simultaneously multiple conflicting criteria. Such a problem does not usually have a unique solution, but a set of non-dominated solutions known as Pareto solutions. In this context, the progress made in the development of more powerful but more computationally demanding numerical methods has led to the emergence of multi-disciplinary optimisation (MDO). However, running computationally expensive multi-objective optimisation procedures to obtain a comprehensive description of the set of Pareto solutions might not always be possible. The aim of this research is to develop a methodology to assist the designer in the multi-objective optimisation process. As a result, an approach to enhance the understanding of the optimisation problem and to gain some insight into the set of Pareto solutions is proposed. This approach includes two main components. First, global sensitivity analysis is used prior to the optimisation procedure to identify non- significant inputs, aiming to reduce the dimensionality of the problem. Second, once a candidate Pareto solution is obtained, the local sensitivity is computed to understand the trade-offs between objectives. Exact linear and quadratic approximations of the Pareto surface have been derived in the general case and are shown to be more accurate than the ones found in literature. In addition, sufficient conditions to identify non-differentiable Pareto points have been proposed. Ultimately, this approach enables the designer to gain more knowledge about the multi-objective optimisation problem with the main concern of minimising the computational cost. A number of test cases have been considered to evaluate the approach. These include algebraic examples, for direct analytical validation, and more representative test cases to evaluate its usefulness. In particular, an airfoil design problem has been developed and implemented to assess the approach on a typical engineering problem. The results demonstrate the potential of the methodology to achieve a reduction of computational time by concentrating the optimisation effort on the most significant variables. The results also show that the Pareto approximations provide the designer with essential information about trade-offs at reduced computational cost.
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Pyle, Raymond A. "Design-build partnership attributes survey analysis." Thesis, Monterey, California. Naval Postgraduate School, 1998. http://hdl.handle.net/10945/8209.
Full textAbstract:
CIVINSTwo basic hypotheses were investigated: 1. Finding these attributes for success for a design-build partnership may be accomplished by transferring concepts and ideas from business research on partnership formation. 2. The other direct source is research on design-build itself. Design-build is a common procurement method in private industry and should be applicable to design-build contracting in transportation. Business literature provided some information regarding partner selection for joint ventures, although the limited information available on joint ventures in developed economies such as the United States is acknowledged in the few texts available on the subject (Harrigan 1986). The literature did suggest partner attributes and resources, or "critical success factors", that offer the greatest likelihood of success (Geringer (1988)
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Hussain, Iqbal. "Analysis and Design of Rateless Codes." Doctoral thesis, KTH, Kommunikationsteori, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156383.
Full textAbstract:
The invention of turbo codes and the re-discovery of sparse graph codes constitute a milestone in error-correction codes designed for communication and storage systems. Sparse graph codes such as low-density parity-check codes can offer a performance that approaches the previously elusive Shannon capacity with reasonable practical computational complexity. Fountain codes have emerged in the realm of sparse graph codes, and have shown excellent performance for multicast and broadcast transmission without channel state information at the transmitter. A fountain code is inherently rateless, and as a consequence, such codes may potentially generate an unlimited number of encoded symbols on the fly. Thus due to the rateless property, these codes are suitable for transmission over time varying channels. The results presented in this thesis aim at providing insight into the fundamental design of rateless codes, which could serve as a guideline for the optimal design of rateless codes in real-world applications. The thesis is divided into two parts. The first part considers the analysis and design of rateless codes for point-to-point communication. To this end, we commence by considering the concatenation of Luby transform (LT) codes, which were the first practical realization of rateless codes, with differential modulators to exploit the inherent coding gain of differential modulations. An algorithm is developed based on the extrinsic information transfer (EXIT) chart to obtain optimized degree distributions of LT coded differential modulator systems in terms of convergence performance. Then, we delve deeper into the characteristics of LT codes with the objective of improving the error floor performance over noisy channels. An encoding scheme is proposed, which is subsequently used to reduce the error floor. To observe the consequences of the modified encoding scheme, the convergence behavior of the proposed LT code is analyzed using EXIT charts, and shown to be similar to the convergence performance of conventional LT codes. This idea is then extended to LT codes for transmission over erasure channels and a design framework is developed to jointly improve the transmission efficiency and erasure floor performance. For complexity-constrained applications, we construct low-complexity LT codes and devise a reduced-complexity LT decoder for transmission over noisy channels. The second part of the thesis deals with the analysis and design of rateless codes for multi-point communication. To address the shortcomings of existing distributed LT (DLT) codes, we introduce buffer-based DLT codes for a multi-source and multi-relay network to virtually convert lossy source-relay links to corresponding lossless links. We optimize the proposed DLT codes in terms of transmission efficiency; thus exhibiting better performance as compared to their conventional counterparts at the expense of increased computational complexity. The idea is then extended to a multi-way relay network where a linear-programming design framework is outlined for optimizing degree distributions in terms of transmission efficiency. Finally, a design framework is provided for DLT coding schemes, to jointly improve the transmission efficiency and erasure floor performance.QC 20141202
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Lee, K. Y. "Analysis model derivation from design geometry." Thesis, Queen's University Belfast, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411097.
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Liu, Zhong Hai. "Automated survey network analysis and design." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254423.
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Lam, Wa-Kwai. "Risk analysis and traffic signal design." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328239.
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JARDIM, JORGE LUIZ DE ARAUJO. "ANALYSIS AND DESIGN OF STATIC EXCITERS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1987. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9489@1.
Full textAbstract:
Os sistemas de potência são projetados para operarem com
tensão e freqüência constantes, admitindo-se pequenas
variações em torno de sues valores nominais. Estas
grandezas são controladas principalmente pelos sistemas de
excitação e reguladores de velocidade, respectivamente.
Esta dissertação examina o projeto de sistemas de
excitação modernos e estabelece as características de
projeto dos componentes das excitatrizes estáticas. Os
principais componentes (conversor, circuito de disparo,
circuito de partida e regulador de tensão) são
implementados em um protótipo de excitatriz.
As respostas do protótipo à pequenas e grandes
perturbações também são discutidas.Power systems are designed to operate with constant voltagem and frequency, allowing small sinal variations around its rated valves. These quantities are mainly controlled by excitation systems and governors, respectively. This dissertation examines the design of modern excitation systems and estabilishes the desired characteristics of static exciter componentes. The main components (conversor, firing circuit, starting circuit and voltage regulator) are implemented in a exciter prototype. The prototype response to small and larger disturbances are also discussed.
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Lin, Likuo 1979. "Visualization framework for software design analysis." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87270.
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Perez, De Rosso Santiago (Santiago Nicolas). "A conceptual design analysis of Git." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97817.
Full textAbstract:
Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 75-77).
It is commonly asserted that the success of a software development project, and the usability of the final product, depend on the quality of the concepts that underlie its design. Yet this hypothesis has not been systematically explored by researchers, and conceptual design has not played the central role in the research and teaching of software engineering that one might expect. As part of a new research project to explore conceptual design, we are engaging in a series of case studies. This thesis reports on our case study on Git, a popular-yet sometimes puzzling-version control system. In an attempt to understand the root causes of its complexity, we analyze its conceptual model and identify some undesirable properties; we then present a reworking of the conceptual model that forms the basis of Gitless, our redesign of Git.
by Santiago Perez De Rosso.
S.M.
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Trask, Andrew Vincent. "Pharmaceutical cocrystals : design, synthesis and analysis." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613783.
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Li, Da-Wei, and 李達為. "IC Design Industry Analysis." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/74172937871883662963.
Full textAbstract:
碩士國立臺灣大學
國際企業學研究所
92
THESIS ABSTRACT GRADUATE INSTITUTE OF INTERNATIONAL BUSINESS NATIONAL TAIWAN UNIVERSITY NAME: Li, Da-Wei MONTH/Year: January/ 2004 ADVISOR: Tang, Ming-Je IC Design Industry Analysis The purpose of this research is to provide analysis and conclusion of following questions. 1. What is the causal-result relationship between basic conditions, conducts and performance in the IC Design industry? 2. What is the difference between “Fabless and Foundry” model and IDM model? 3. Are there “Economies of Scale” existing in the IC Design industry? 4. Are there “Economies of Scope” existing in the IC Design industry? 5. What are the development traces and strategies of global top 5 Fabless? Based on the theory of SCP Industry Analysis, this research employs secondary information and information from visiting experts in the IC Design industry, to implement qualitative analysis of global top 5 Fabless: QALCOMM, NVIDIA vs. ATI, and XILINX vs. ALTERA. Based on thinking, this research implements quantitative analysis of following questions: (Fabless +Foundry) vs. IDM, Chip or Module, Economies of Scale in the IC Design industry and Economies of Scope in the IC Design industry. Finally, four findings and two inferences are found in this research. Four findings of this research are as follows: (1) The profit rate of (Fabless +Foundry) is larger than IDM. Fabless should be focus to be Fabless, not to be IDM. (2) Fabless should be focus to be “Chip maker”, not to be “Module maker”. (3) “Economies of Scale” is larger than “Economies of Scope” in the IC Design industry, so the big one always to be the big one. Fabless should be focus to be “Specific field Chip maker”, not to be “Multi-fields Chips maker”. (4) “Q (quantity)” should not be the Output variable in the IC Design industry. The Output variable in the IC Design industry should be “quality”. The Output variable in the manufacturing industry is “quantity”, but the Output variable in the IC Design industry should be “Time”. In the IC Design industry, “Time” and “Chip Die Size” are determined by “Fixed Cost”. Key words: IC Design, SCP Industry Analysis, Vertical Integration, Economies of Scale, Economies of Scope.
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Shu, CHENG-Yi, and 徐承義. "Analysis of KVM Design using Eco-Design Software." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/k68y95.
Full textAbstract:
碩士環球技術學院
環境資源管理所
96
This study utilized the Eco-Design software ProdTect and and the life cycle assessment spreadsheet Eco-Report_V5 to analyze four personal and four business-to-business KVMs (keyboard, video and mouse switches). The former was used to characterize the disassembling time of the products, their ProdTect benchmark, their green product positioning, while the latter was applied to measure the environmental impact related to their actual production. The analysis focused on the joining types that are time consuming, and the comparisons between various indicators. As a result, a green product positioning table based on product potential and recycling rate and the environmental impact analysis were produced for the KVM industries in the design phase. Several discoveries were made. Two main methods of joining parts of KVMs were the use of hexagon and cross screws totaling 134 and 132, respectively. The indicators were grouped into four aspects: use of materials, product design, joining techniques and use of joining types. On the aspect of use of materials, only one of them had detailed datasheet; all had good scores on the product design; on the aspect of joining techniques, many products contained up to four joining cables that cannot be cut simultaneously attached to one single component and three components joined to one specific part; and on the aspect of use of joining types, there existed diverse joining methods. One product even used seven joining types. On the evaluation of green product positioning, one product was of high product potential but low recycling rate, whereas the other seven were of high product potential and high recycling rate. On the environmental impact of the KVMs, it was found to highly related to the printed circuit board (PCB) (R≥0.87). Therefore, the above results suggested that, in the design phase of KVMs, one should use highly recyclable material with detailed label, utilize less redundant design or PCBs to reduce its weight and environmental impact, increase use of snap fit to decrease use of screws, and cut down the use of diverse joining types and bundle up cables to reduce the disassembling time.
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"Probabilistic Finite Element Analysis and Design Optimization for Structural Designs." Master's thesis, 2012. http://hdl.handle.net/2286/R.I.15933.
Full textAbstract:
abstract: This study focuses on implementing probabilistic nature of material properties (Kevlar® 49) to the existing deterministic finite element analysis (FEA) of fabric based engine containment system through Monte Carlo simulations (MCS) and implementation of probabilistic analysis in engineering designs through Reliability Based Design Optimization (RBDO). First, the emphasis is on experimental data analysis focusing on probabilistic distribution models which characterize the randomness associated with the experimental data. The material properties of Kevlar® 49 are modeled using experimental data analysis and implemented along with an existing spiral modeling scheme (SMS) and user defined constitutive model (UMAT) for fabric based engine containment simulations in LS-DYNA. MCS of the model are performed to observe the failure pattern and exit velocities of the models. Then the solutions are compared with NASA experimental tests and deterministic results. MCS with probabilistic material data give a good prospective on results rather than a single deterministic simulation results. The next part of research is to implement the probabilistic material properties in engineering designs. The main aim of structural design is to obtain optimal solutions. In any case, in a deterministic optimization problem even though the structures are cost effective, it becomes highly unreliable if the uncertainty that may be associated with the system (material properties, loading etc.) is not represented or considered in the solution process. Reliable and optimal solution can be obtained by performing reliability optimization along with the deterministic optimization, which is RBDO. In RBDO problem formulation, in addition to structural performance constraints, reliability constraints are also considered. This part of research starts with introduction to reliability analysis such as first order reliability analysis, second order reliability analysis followed by simulation technique that are performed to obtain probability of failure and reliability of structures. Next, decoupled RBDO procedure is proposed with a new reliability analysis formulation with sensitivity analysis, which is performed to remove the highly reliable constraints in the RBDO, thereby reducing the computational time and function evaluations. Followed by implementation of the reliability analysis concepts and RBDO in finite element 2D truss problems and a planar beam problem are presented and discussed.Dissertation/Thesis
M.S. Civil and Environmental Engineering 2012
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Wesley, Wayne R. Simpson James R. "Design and analysis of response surface designs with restricted randomization." 2006. http://etd.lib.fsu.edu/theses/available/etd-07102006-153047.
Full textAbstract:
Thesis (Ph. D.)-- Florida State University, 2006.Advisor: James R. Simpson, Florida State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering. Title and description from dissertation home page (viewed Jan. 2, 2007). Document formatted into pages; contains xii, 195 pages. Includes bibliographical references.
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Vandrasi, Vivek. "Optical Filter Design: Gain Analysis and Tolerance Analysis." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8500.
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Three components, gain analysis, tolerance analysis in-depth, and a brief non-
linearity analysis, are presented. In the first component, the effects of an Erbium
doped waveguide amplifier in a microring are investigated using a time domain simulation. Methods to simulate the gain versus average input signal power in the microring are studied, given that it has a long lifetime compared to the short delay time of
the microring. The methods are based on the dependence of the gain on the power
of the signal being fed to the ring.
An algorithm is proposed to perform a thorough tolerance analysis on any optical
circuit with respect to any optical parameter. The algorithm, based on Monte Carlo
Simulation, is implemented on a complex optical circuit that is designed to obtain a
bandpass filter response of given specifications. It is also tested on similar designs for
a comparative study between them. The parameters and the structure of the designs
used for the analysis are presented in detail. The results are presented in terms of
the yield with respect to the parameter being varied, against their tolerance value.
Algorithms for studying the effects of two types of non-linearities are presented.
The Kerr nonlinearity and the two-photon absorption are included in the bandpass filter designs used for the tolerance analysis. The algorithms are based on the power
circulating in different regions of the circuit under consideration. The variation in
the original response because of the loss due to nonlinearity is observed and analyzed
for different power levels of the input signal.
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CHEN, YING-QUAN, and 陳英全. "Design and analysis using response bounde for foundation design." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/01455091435569668734.
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