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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Mechanical design under changing customer requirements case study : BugID /

Fagan, Chris R. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 42-44). Also available on the World Wide Web.
2

A method to support the requirements trade-off of integrated vehicle health management for unmanned aerial systems

Heaton, Andrew Edward January 2014 (has links)
he digital revolution in the latter part of the twentieth century has resulted in the increased use and development of Cyber-Physical Systems. Two of which are Unmanned Aerial Systems (UAS) and Integrated Vehicle Health Management (IVHM). Both are relatively new areas of interest to academia, military, and commercial organisations. Designing IVHM for a UAS is no easy task – the complexity inherent in UAS, with projects involving multiple partners/organisations; multiple stakeholders are also interested in the IVHM. IVHM needs to justify itself throughout the life of the UAS, and the lack of established knowledge makes it hard to know where to start. The establishment and analysis of requirements for IVHM on UAS is known to be important and costly – and for IVHM a complex one. There are multiple stakeholders to satisfy and ultimately the needs of the customer, all demanding different things from the IVHM, and with limited resources they need to be prioritised. There are also many hindrances to this: differences in language between stakeholders, customers failing to see the benefits, scheduling conflicts, no operational data. The contribution to knowledge in this thesis is the IVHM Requirements Deployment (IVHM-RD) – a method for a designer of UAS IVHM to build a tool which can consolidate and evaluate the various stakeholder’s requirements. When the tool is subsequently populated with knowledge from individual Subject Matter Experts (SMEs), it provides a prioritised set of IVHM requirements. The IVHM-RD has been tested on two design cases and generalised for the use with other designs. Analysis of the process has been conducted and in addition the results of the design cases have been analysed in three ways: how the results relate to each design case, comparison between the two cases, and how much the relationships between requirements are understood. A validation exercise has also been conducted to establish the legitimacy of the IVHM-RD process. This research is likely to have an impact on the elicitation and analysis of IVHM requirements for UAS – and the wider design process of IVHM. The IVHM-RD process should also prove of use to designers of IVHM on other assets. The populations of the design cases also provide information which could be useful to other designer and future research.
3

Supporting general aviation pilots during rerouting process due to sudden weather changes

Tokadli, Guliz 21 September 2015 (has links)
General aviation pilots need different types of flight information in order to follow events and the changes related to the aircraft environment while flying. However, general aviation cockpits have some limitations as space to install flight displays to provide flight information beyond the basics to the pilot. Additionally, more sophisticated instrumentation is often expensive to install and maintain. With the development of the tablet-based software applications (such as ForeFlight, WingX Pro7 or Garmin Pilot applications for iPad), general aviation pilots have started to use them instead of paper documentation. These software applications provide essential flight information such as weather forecast, aviation charts, flight documents, etc. Unfortunately, the expectations for their capabilities are changing with the increased demand and popularity of these software applications. Therefore, these flight planning software applications are compared to find what is missing and what have not met the expectation of pilots. First, how the software applications support their decision-making process was described and demonstrated to choose the appropriate flight parameters to change flight path while handling with the other cockpit responsibilities. Finally, these design requirements were validated via HITL tests in a part-task flight simulator. The results provided that the suggested design requirements are found highly useful for both novice and expert general aviation pilots. Specifically, novice general aviation pilots might be able to get visualization to compare real-time weather and weather forecast, and then they might gain experience to improve their success for a in-flight re-planning. On the other side, expert pilots might prefer to use this system if they fly an airspace which they are not familiar to weather features of that region.
4

A transposição dos requisitos estéticos e simbólicos de projeto em atributos formais do produto

Sapper, Stella Lisboa January 2015 (has links)
Este trabalho tem por objetivo propor uma sistematização do processo de transposição de requisitos estéticos e simbólicos de projeto em atributos formais do produto. Para a consecução do trabalho, foram investigados: o processo de desenvolvimento de produtos, com foco nas etapas que contemplam a transposição de requisitos de projeto em atributos formais do produto; a criatividade no âmbito do design e as técnicas utilizadas para o estímulo do pensamento criativo; e, as relações entre a semiótica e o design, com ênfase nas questões referentes às funções comunicativas (função estética e função simbólica) dos produtos. Com base no levantamento bibliográfico, foram estabelecidos critérios relativos aos requisitos estéticos e simbólicos para a seleção das técnicas que compõem o processo de transposição. O processo foi sistematizado por meio da organização das técnicas selecionadas e da inserção de aspectos fundamentais para atender aos requisitos estéticos e simbólicos do projeto. Foi realizada uma pesquisa documental com quatro relatórios de projeto da disciplina de Design de Embalagem II do curso de Graduação em Design da UFRGS. Essa pesquisa documental objetivou identificar as técnicas utilizadas no processo de desenvolvimento de produtos (PDP) que auxiliaram no estabelecimento dos requisitos de projeto. Foi selecionado um relatório como referência e os requisitos estéticos e simbólicos do projeto foram utilizados para a verificação da aplicabilidade da estrutura sistematizada. Essa verificação foi realizada pela autora com base nas informações do relatório selecionado. Após, foi feita a aplicação do método Delphi com cinco especialistas, em duas rodadas de perguntas. Com isso, foi possível refinar o processo sistematizado e apresentá-lo em uma estrutura de aplicação. Assim, a dissertação é concluída com a proposição do processo sistematizado final, composto por cinco fases: Identificar, Representar, Relacionar, Gerar e Selecionar. Cada fase possui suas técnicas de apoio e diretrizes de aplicação para apoiar a transposição de requisitos estéticos e simbólicos de projeto em atributos formais do produto. / This work aims to propose a systematization of the transposition process of aesthetic and symbolic requirements of design in formal product attributes. To achieve the work, were investigated by means of literature the product development process, focusing on steps that include the transposition of project requirements in formal attributes of product. The creative process within design and the methods and techniques used for the stimulation of creative thinking. Lastly, the relationship between semiotics and design, with emphasis on issues related to the communicative function of the products. Based on the literature, criteria were established relating to aesthetic and symbolic requirements for the selection of the techniques that make up the transposition process. The structure was systematized through the organization of selected techniques and inserting of key aspects to meet the aesthetic and symbolic design requirements. It was made a documentary research with four project reports of the discipline Packaging Design II of the course Undergraduate in Design at UFRGS. This documentary research aimed to identify the techniques used in the product development process (PDP) who assisted in establishing the design requirements. A report was selected as a reference and the aesthetic and symbolic requirements of the project were used for assessing the applicability of systematic structure. The author based on the information of the selected report conducted this check. After, the application of Delphi was made with five experts in two rounds of questions. Thus, it was possible to refine the systematic process and present it in an application structure. The study concludes with the systematic process proposition finalized, composed of five phases: Identify, Represent, Relate, Generate and Select. Each phase has its support techniques and guidelines of application. Each phase has its supporting technical and application guidelines to support the transposition of aesthetic and symbolic requirements of design in formal product attributes.
5

A transposição dos requisitos estéticos e simbólicos de projeto em atributos formais do produto

Sapper, Stella Lisboa January 2015 (has links)
Este trabalho tem por objetivo propor uma sistematização do processo de transposição de requisitos estéticos e simbólicos de projeto em atributos formais do produto. Para a consecução do trabalho, foram investigados: o processo de desenvolvimento de produtos, com foco nas etapas que contemplam a transposição de requisitos de projeto em atributos formais do produto; a criatividade no âmbito do design e as técnicas utilizadas para o estímulo do pensamento criativo; e, as relações entre a semiótica e o design, com ênfase nas questões referentes às funções comunicativas (função estética e função simbólica) dos produtos. Com base no levantamento bibliográfico, foram estabelecidos critérios relativos aos requisitos estéticos e simbólicos para a seleção das técnicas que compõem o processo de transposição. O processo foi sistematizado por meio da organização das técnicas selecionadas e da inserção de aspectos fundamentais para atender aos requisitos estéticos e simbólicos do projeto. Foi realizada uma pesquisa documental com quatro relatórios de projeto da disciplina de Design de Embalagem II do curso de Graduação em Design da UFRGS. Essa pesquisa documental objetivou identificar as técnicas utilizadas no processo de desenvolvimento de produtos (PDP) que auxiliaram no estabelecimento dos requisitos de projeto. Foi selecionado um relatório como referência e os requisitos estéticos e simbólicos do projeto foram utilizados para a verificação da aplicabilidade da estrutura sistematizada. Essa verificação foi realizada pela autora com base nas informações do relatório selecionado. Após, foi feita a aplicação do método Delphi com cinco especialistas, em duas rodadas de perguntas. Com isso, foi possível refinar o processo sistematizado e apresentá-lo em uma estrutura de aplicação. Assim, a dissertação é concluída com a proposição do processo sistematizado final, composto por cinco fases: Identificar, Representar, Relacionar, Gerar e Selecionar. Cada fase possui suas técnicas de apoio e diretrizes de aplicação para apoiar a transposição de requisitos estéticos e simbólicos de projeto em atributos formais do produto. / This work aims to propose a systematization of the transposition process of aesthetic and symbolic requirements of design in formal product attributes. To achieve the work, were investigated by means of literature the product development process, focusing on steps that include the transposition of project requirements in formal attributes of product. The creative process within design and the methods and techniques used for the stimulation of creative thinking. Lastly, the relationship between semiotics and design, with emphasis on issues related to the communicative function of the products. Based on the literature, criteria were established relating to aesthetic and symbolic requirements for the selection of the techniques that make up the transposition process. The structure was systematized through the organization of selected techniques and inserting of key aspects to meet the aesthetic and symbolic design requirements. It was made a documentary research with four project reports of the discipline Packaging Design II of the course Undergraduate in Design at UFRGS. This documentary research aimed to identify the techniques used in the product development process (PDP) who assisted in establishing the design requirements. A report was selected as a reference and the aesthetic and symbolic requirements of the project were used for assessing the applicability of systematic structure. The author based on the information of the selected report conducted this check. After, the application of Delphi was made with five experts in two rounds of questions. Thus, it was possible to refine the systematic process and present it in an application structure. The study concludes with the systematic process proposition finalized, composed of five phases: Identify, Represent, Relate, Generate and Select. Each phase has its support techniques and guidelines of application. Each phase has its supporting technical and application guidelines to support the transposition of aesthetic and symbolic requirements of design in formal product attributes.
6

A transposição dos requisitos estéticos e simbólicos de projeto em atributos formais do produto

Sapper, Stella Lisboa January 2015 (has links)
Este trabalho tem por objetivo propor uma sistematização do processo de transposição de requisitos estéticos e simbólicos de projeto em atributos formais do produto. Para a consecução do trabalho, foram investigados: o processo de desenvolvimento de produtos, com foco nas etapas que contemplam a transposição de requisitos de projeto em atributos formais do produto; a criatividade no âmbito do design e as técnicas utilizadas para o estímulo do pensamento criativo; e, as relações entre a semiótica e o design, com ênfase nas questões referentes às funções comunicativas (função estética e função simbólica) dos produtos. Com base no levantamento bibliográfico, foram estabelecidos critérios relativos aos requisitos estéticos e simbólicos para a seleção das técnicas que compõem o processo de transposição. O processo foi sistematizado por meio da organização das técnicas selecionadas e da inserção de aspectos fundamentais para atender aos requisitos estéticos e simbólicos do projeto. Foi realizada uma pesquisa documental com quatro relatórios de projeto da disciplina de Design de Embalagem II do curso de Graduação em Design da UFRGS. Essa pesquisa documental objetivou identificar as técnicas utilizadas no processo de desenvolvimento de produtos (PDP) que auxiliaram no estabelecimento dos requisitos de projeto. Foi selecionado um relatório como referência e os requisitos estéticos e simbólicos do projeto foram utilizados para a verificação da aplicabilidade da estrutura sistematizada. Essa verificação foi realizada pela autora com base nas informações do relatório selecionado. Após, foi feita a aplicação do método Delphi com cinco especialistas, em duas rodadas de perguntas. Com isso, foi possível refinar o processo sistematizado e apresentá-lo em uma estrutura de aplicação. Assim, a dissertação é concluída com a proposição do processo sistematizado final, composto por cinco fases: Identificar, Representar, Relacionar, Gerar e Selecionar. Cada fase possui suas técnicas de apoio e diretrizes de aplicação para apoiar a transposição de requisitos estéticos e simbólicos de projeto em atributos formais do produto. / This work aims to propose a systematization of the transposition process of aesthetic and symbolic requirements of design in formal product attributes. To achieve the work, were investigated by means of literature the product development process, focusing on steps that include the transposition of project requirements in formal attributes of product. The creative process within design and the methods and techniques used for the stimulation of creative thinking. Lastly, the relationship between semiotics and design, with emphasis on issues related to the communicative function of the products. Based on the literature, criteria were established relating to aesthetic and symbolic requirements for the selection of the techniques that make up the transposition process. The structure was systematized through the organization of selected techniques and inserting of key aspects to meet the aesthetic and symbolic design requirements. It was made a documentary research with four project reports of the discipline Packaging Design II of the course Undergraduate in Design at UFRGS. This documentary research aimed to identify the techniques used in the product development process (PDP) who assisted in establishing the design requirements. A report was selected as a reference and the aesthetic and symbolic requirements of the project were used for assessing the applicability of systematic structure. The author based on the information of the selected report conducted this check. After, the application of Delphi was made with five experts in two rounds of questions. Thus, it was possible to refine the systematic process and present it in an application structure. The study concludes with the systematic process proposition finalized, composed of five phases: Identify, Represent, Relate, Generate and Select. Each phase has its support techniques and guidelines of application. Each phase has its supporting technical and application guidelines to support the transposition of aesthetic and symbolic requirements of design in formal product attributes.
7

Coordination in Emergency Management from a Joint Cognitive Systems Perspective

Aminoff, Hedvig January 2007 (has links)
Emergency management (EM) can benefit from new information and communication technology (ICT). However, the complexity of the field poses high demands upon prospective system developers. The design of technological support in a field where roles and actions are entwined and never completely predetermined, requires an understanding of interactions in the socio-technical system as a whole. In this thesis, an attempt is made to work from a Cognitive Systems Engineering stance to identify important characteristics of coordination in intermunicipal EM. Applying perspectives from distributed cognition, joint activity and common ground, Hollnagel’s COCOM and ECOM models have been applied to identify points of entry into work practices. Working with data from a simulated forest-fire in a role-playing exercise, an analysis of dialogues uncovered ambiguity in how functions are handled in a large event, indicating vulnerabilities in face of larger crises. In addition, it became evident that functions moved across roles during the evolving event, and it was possible to uncover recognizable phases of a response. The results underline characteristics that should be supported by future ICT, and occurrences that can be explored in future studies.
8

Evaluating End Users’ Online Privacy Preferences and Identifying PET Design Requirements: A Literature Review

Kolivodiakos, Paraskevas January 2018 (has links)
In this research end user privacy preferences regarding online resources web and mobile applications and websites are investigated and design requirements needed for the development of a privacy focused, privacy enhancing technology tool are identified, as derived from the literature, the crowd source based solution is the most appealing solution so it is fully analyzed according to our research main focus.
9

Análise de máquinas agrícolas distribuidoras de fertilizantes segundo requisitos projetuais / Lifting of farm machinery distributors of fertilizers: requirements analysis seconds projetuais

Flores, Eduardo Fiorin 03 March 2008 (has links)
The Brazilian agriculture develops year by year. Nowadays, it is noticed that studies addressed for a constant increase for an implantations of technological systems in machineries and management of rural properties are accomplished, offering this way options in that the technology applied in a property can provide better results in production, in quantity, in quality, in cost for agricultures implantations, and in structuring of the soil focusing the environment. The applied technology can allow a variation of the dosage in elapsing of cultivation applying the dose already recommended for each bars lifted up, measured and implanted in the system. The objective of this work was to accomplish a survey of information and an analysis on distributors of fertilizers machines disposed in the Rio Grande do Sul State market, verifying if manufacturers of those machines uses some type of reference model for development of the product, looking for in that way to evaluate the level of satisfaction of the projetuais requirements, because, it is known that the deficiency in application of models for to project machines is enormous in Brazil, basing a lot on the " attempt " and " error", therefore, the demand of studies for the development of products is larger, in the search of the customer's satisfaction. The data were collected through the application of questionnaires to identify the occurrence of the accomplishment of the ten most important design requirements, already hierarchized by the tool QFD for its degree of importance, besides deepen the accomplish of pamphlets that characterize the models of distributors of fertilizers, as well as sites exploration linked to this type of machinery. The collection of information was accomplished and addressed the satisfaction of the requirements and users. The questionnaires were applied to technicians responsible for the analyzed models and to the own users, gathering information of each fertilizer dosager machine studied in the research, verifying if it accomplishes or not the requirements determined by Menegatti (2004). It is noticed, through this work that 18 (eighteen) models of distributors do not accomplish 50% of the project requirements, and that most of the models, 44 (forty-four) models of 69 (sixty-nine) analyzed accomplish 50% of the requirements exactly, and the maximum number of accomplished requirements was 7 (seven), where two models just satisfied those requirements. No model accomplished all the requirements, even so everyone accomplished some type of a projetual requirement, introducing none below 4 (four). With that, you can use this survey to identify the lack of each machine, allowing as soon as possible develop new actions in the projection of the machine so that it has the requirement of analyzed project and present satisfactorily. / A agricultura brasileira evolui ano a ano. Nos tempos de hoje, nota-se que são realizados estudos direcionados para um aumento constante de implantações de sistemas tecnológicos nos maquinários e gerenciamento de propriedades rurais, ofertando desta maneira opções em que a tecnologia aplicada em uma propriedade possa proporcionar melhores resultados na produção, na quantidade e na qualidade, no custo para implantação de lavouras, e na estruturação do solo focando para o meio ambiente. A tecnologia aplicada pode permitir uma variação da dosagem no decorrer da lavoura aplicando a dose recomendada para cada grade já levantada, mensurada e implantada no sistema. O objetivo do presente trabalho foi realizar um levantamento de informações e uma análise sobre as máquinas distribuidoras de fertilizantes disponibilizadas no mercado do Estado do Rio Grande do Sul, verificando se fabricantes dessas máquinas utilizam algum tipo de modelo de referência para desenvolvimento do produto, buscando dessa forma avaliar o nível de satisfação dos requisitos projetuais, pois, sabe-se que a deficiência na aplicação de modelos para projetar máquinas é enorme no Brasil, baseando-se muito na tentativa e erro , portanto a exigência de estudos para o desenvolvimento de produtos é maior, na busca da satisfação do cliente. Os dados foram coletados através da aplicação de questionários para identificar a ocorrência da realização dos dez requisitos projetuais mais importantes, já hierarquizados pela ferramenta QFD pelo seu grau de importância, além do aprofundamento de panfletos que caracterizam os modelos de distribuidores de fertilizantes, como também exploração de sites vinculados a este tipo de maquinário. A coleta de informações foi realizada e direcionada a satisfação dos requisitos e usuários. Os questionários foram aplicados a responsáveis técnicos dos modelos analisados e aos próprios usuários, reunindo informações de cada máquina dosadora de fertilizante estudada na pesquisa, verificando se ela realiza ou não os requisitos determinados por Menegatti (2004). Percebe-se, neste trabalho que 18 (dezoito) modelos de distribuidores não realizam 50% dos requisitos de projeto, e que a maioria dos modelos, 44 (quarenta e quatro) modelos de 69 (sessenta e nove) analisados realizam exatamente 50% dos requisitos, e o número máximo de requisitos realizados foi 7 (sete), onde apenas dois modelos satisfizeram esses requisitos. Nenhum modelo realizou todos os requisitos, porém todos realizaram algum tipo de requisito projetual, não apresentando nenhum abaixo de 4 (quatro). Com isso pode-se através deste levantamento identificar a carência de cada máquina, permitindo assim que possa desenvolver novas ações na projetação da máquina para que ela tenha o requisito de projeto analisado e presente satisfatoriamente.
10

Analysis of design requirements for early failure detection in a gear test rig / Analys av konstruktionskrav för detektering av tidiga kuggskador i en kuggprovningsrigg

Spaccesi, José Agustín January 2020 (has links)
Gears are the heart of many machines, being its function transform and transmit torque. This work is a study of adequate design requirements, in particular, the best methodology to early detect gear fatigue failure using a gear test rig, an FZG test machine. The study used the widely proved QFD analysis technique that introduces the client in the design process by using a matrix system. All available relevant literature on the subject and interviews with relevant people in the field were sources of information for the development of this technique. In that way, a mapping is presented, showing the most common fatigue failure modes and available detection methods.  As a result of the investigation, the most suitable technique for the early gear failure detection in the FZG rig to be a combination of vibration analysis and acoustic emissions analysis, these techniques present the best practice at the moment and also possible to implement. However, other technologies are also presented in the report. / Kuggväxlar uppfyller en viktig funktion i många system. I det här arbetet studerades de viktigaste konstruktionskraven hos en tetstrigg för kugg, en FZG-rigg, för att kunna detektera tidiga tecken på kuggskador. Litteraturstudier tillsammans med intervjuer av personer från industrin lade grunden till en jämförelse av produktegenskaper som uppfyller kundkraven med hjälp av en så kallad Quality Function Deployment matrix (QFD-matris). I en QFD omvandlas kundkrav till funktion- och konstruktionskrav, i och med den kunde också de vanligaste kuggskadorna och detekteringsmetoderna kartläggas.  De mest relevanta teknikerna för att detektera tidiga tecken på skador i en FZG-rigg idag visade sig vara en kombination av vibrationsmätningar och akustiska emissionsmätningar. Lösningen är möjlig att implementera. Även andra teknologier finns presenterade i rapporten. / Los engranajes son el corazón de muchas máquinas, siendo su función transformar y transmitir par. En este trabajo se realizó un estudio de los requisitos de diseño más adecuados, en particular, la mejor metodología para detección anticipada de fallo a fatiga de engranajes testeados en un banco de pruebas de engranajes FZG. Durante el estudio se utilizó la técnica de análisis QFD que introduce al cliente en el proceso de diseño mediante el uso de un sistema matricial. Toda la literatura relevante disponible sobre el tema, así como entrevistas a personas relevantes en el campo fueron utilizadas como fuente de información para el desarrollo de dicha técnica. También se realizó un mapeo de los diferentes modos y mecanismos de fallo por fatiga más comunes, así como los métodos de detección disponibles.  Como resultado de la investigación se concretó como metodología más adecuada para la detección anticipada de fallo de engranajes en los bancos de prueba FZG, una combinación de análisis de vibraciones y análisis de emisiones acústicas, estas técnicas presentan las mejores características en función de la dificultad de implementación. Sin embargo, en el informe también se presentan otras tecnologías.

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