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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.
51

Designing Context-Aware Applications for Complex Environments

Brett Campbell Unknown Date (has links)
Researchers have approached the problem of designing context-aware systems, computer systems that can react intelligently to the context in which they are used, from both software engineering and human-centred perspectives. While engineered context-aware systems have found successful application in optimising technical settings without requiring mundane and explicit interaction from humans, challenges remain in furthering their application to more complex environments. In particular, when technical decisions and human actions are intertwined in sophisticated work environments (rather than, for example, the simple act of transferring a mobile phone call to receive a signal from the nearest tower), the problem of designing context-aware systems demands further examination and calls for a new approach. A natural extension of the software engineering approach in more challenging environments is to try to implement increasingly sophisticated algorithms for managing context in the hope that this will lead to autonomous application behaviour. In contrast, research from a human-centred perspective, grounded in the social sciences and philosophy, demonstrates that context is not entirely objective and measurable but rather is dynamic and created through human action. It may not be easily detected through technical sensing systems, and therefore simply employing more sophisticated algorithms within the technical sphere may not be effective. While engineering approaches have continued to evolve, the problem of how to design interfaces to context-aware applications still remains. The research reported in this dissertation investigated the problem of designing context-aware systems for the complex environment of a dental surgery. I undertook, though a participatory design approach (a) to better characterise the problem of designing context-aware systems, and (b) to understand how design methods could be employed to bridge the human and software engineering approaches. The gap in existing research on context-aware systems is evident in the way that the methods applied to designing systems don't provide an insight into how people actively create the context in which they work (in a practical rather than theoretical sense) they don‘t closely examine the behaviours of people, the role and arrangement of artefacts, and the dynamic relationships between people and artefacts. I found that an understanding of how these features of work and human behaviour are realised in practice in a given environment is fundamental to being able to design an effective context-aware system for that environment. The challenge is to design at the boundary between the technical and the social. The contribution of this thesis is an approach that explores context-aware design through synthesis. The synthetic approach leads to design opportunities and guidelines based on an understanding of the processes through which people actively co-create the context in which they work. I have applied and built upon a number of existing user-centred design and participatory design methods, in addition to creating some new methods in order to develop an understanding of how designers can examine the human aspects surrounding the co-creation of context and apply these in a way that progressively informs the design process. The methods collectively represent a novel approach to designing context-aware applications and differ from the more traditional technical approaches of developing software frameworks and infrastructures, and formal models of context, tasks, users, and systems. The techniques presented have focused primarily on developing an understanding of how humans find meaning in their actions along with their interaction with other people and technology. Participatory design methods help participants to reveal potential implicit technical resources that can be presented explicitly in technologies in order to assist humans in managing their interactions with and amidst technical systems gracefully. The methods introduced and the design approach proposed complement existing research on context-awareness from both a human-centred and software engineering perspective. This research builds on the notion of providing resources which allow users to manage their own context and also manage shifts in control while interacting with other people and with a variety of technical artefacts. It does this by examining a complex work environment, in particular looking at the kinds of resources people use and expect to use (and the constraints around these), the form(s) it is appropriate for them to take, and the patterns of interaction they will ultimately be used within.
52

Functional and environmental factors in early phases of product development - Eco functional matrix

Lagerstedt, Jessica January 2003 (has links)
Interest in environmental issues has increased enormouslyover the last few decades and environmental problems areperceived to be on the increase. Due to the fact that thenumber of products on the market increases enormously, it isevident that we face a great challenge to overcome the problemconcerning our consumer society. An increasing barrage oflegislation accompanied by the public’s awareness of, andconcern for, the environment forcing the industry to respond.Products and their environmental impact have moved to thecentre stage and it is widely believed that designers have akey role in adapting products to a sustainable society. Threekey issues are identified in this development scenario: (a) theimportance of adapting products to a more sustainable society,(b) the specific situation facing the designer, especially inearly design phases, and (c) balancing environmental impactswith functional preferences. Research in this thesis presents a theoretical framework fordescribing environmental issues and the role of the designer inproduct development, as well as functional characteristics ofproducts in the early phases of design. Based on anengineering-design science foundation, theoretical models andconcepts have been developed describing how both functional andenvironmental preferences can be visualised in design forenvironment and product development. Case studies andinterviews have been performed and integrated into a coherenttheoretical model for identifying and evaluating functional andenvironmental preferences within ecodesign approach andreasoning. The overall concept proposed in this thesis is called theeco functional matrix, based on two parts: functional profileand environmental profile. The functional profile represent thefunctional characteristics and environmental profile theenvironmental characteristics respectively of a product in theearly phases of design. One of the objectives behind theconcept is to highlight the importance of balancing functionalrequirements and environmental impacts, presenting both theadvantages and disadvantages of the product. The basic idea isto account for user and societal preferences as well asenvironmental impact when assessing alternative productconcepts at early design stages. Balancing both the functionalrequirements and the negative environmental impacts of productsis the road to sustainable development. <b>KEYWORDS</b>Design for environment, life-cycle design,eco-design, eco-design methods, product environmentalcharacteristics, product functional characteristics, customerbenefit, value analysis, functional profile, environmentalprofile, eco functional matrix, product properties.
53

Functional and environmental factors in early phases of product development - Eco functional matrix

Lagerstedt, Jessica January 2003 (has links)
<p>Interest in environmental issues has increased enormouslyover the last few decades and environmental problems areperceived to be on the increase. Due to the fact that thenumber of products on the market increases enormously, it isevident that we face a great challenge to overcome the problemconcerning our consumer society. An increasing barrage oflegislation accompanied by the public’s awareness of, andconcern for, the environment forcing the industry to respond.Products and their environmental impact have moved to thecentre stage and it is widely believed that designers have akey role in adapting products to a sustainable society. Threekey issues are identified in this development scenario: (a) theimportance of adapting products to a more sustainable society,(b) the specific situation facing the designer, especially inearly design phases, and (c) balancing environmental impactswith functional preferences.</p><p>Research in this thesis presents a theoretical framework fordescribing environmental issues and the role of the designer inproduct development, as well as functional characteristics ofproducts in the early phases of design. Based on anengineering-design science foundation, theoretical models andconcepts have been developed describing how both functional andenvironmental preferences can be visualised in design forenvironment and product development. Case studies andinterviews have been performed and integrated into a coherenttheoretical model for identifying and evaluating functional andenvironmental preferences within ecodesign approach andreasoning.</p><p>The overall concept proposed in this thesis is called theeco functional matrix, based on two parts: functional profileand environmental profile. The functional profile represent thefunctional characteristics and environmental profile theenvironmental characteristics respectively of a product in theearly phases of design. One of the objectives behind theconcept is to highlight the importance of balancing functionalrequirements and environmental impacts, presenting both theadvantages and disadvantages of the product. The basic idea isto account for user and societal preferences as well asenvironmental impact when assessing alternative productconcepts at early design stages. Balancing both the functionalrequirements and the negative environmental impacts of productsis the road to sustainable development.</p><p><b>KEYWORDS</b>Design for environment, life-cycle design,eco-design, eco-design methods, product environmentalcharacteristics, product functional characteristics, customerbenefit, value analysis, functional profile, environmentalprofile, eco functional matrix, product properties.</p>
54

"E-Portfolio" projektavimas ir metodų tyrimas / Design and analysis of e-portfolio

Dovydaitis, Juozas 16 July 2008 (has links)
Šiame dokumente nagrinėjama tyrimo sritis susijusi su „E-Portfolio“ tipo sistemų projektavimu ir galimų projektavimo metodų parinkimu. Analitinėje darbo dalyje pristatomos „E-Portfolio“ sistemos, jos vėliau palyginamos. Projektinėje dalyje pateikiama suprojektuotos tokios sistemos – „ePortfelis“, - architektūra. Tiriamojoje darbo dalyje apžvelgiami skirtingi projektavimo metodai ir jų tinkamumas „E-Portfolio“ sistemų projektavimui. / The main objective of this project was to design and develop an e-portfolio system „ePortfelis”. During this process the analysis of alternative e-portfolio systems was performed, as well as gathering of e-portfolio requirements. The design of developed system was carried according to RUP process. There were reviewed three different software design methods during the software design methods analysis part: SSADM, Booch method and JSP. It was determined that of those three above mentioned methods JSP was most unsuitable for designing e-portfolio systems.
55

Supporting customer focused design in the assistive technology industry

Bamforth, Sarah E. January 2003 (has links)
Assistive technologies (AT) are the products provided to elderly and disabled people to enable them to live more independently. Despite their ability to help maintain independence and prevent injury, the literature discussed within this thesis indicates that assistive technologies are not meeting the needs of the end-user. In response, research has been undertaken with the following objectives: 1. To identify how and why assistive technology products are failing to satisfy the customer. 2. To establish if a design tool can be created that overcomes the issues identified in the inductive research and which enables companies to design customer-satisfying assistive technology products. In progressing these objectives, two phases of research were planned. The first comprised four parallel studies (focus groups, case studies, questionnaires and a literature study), which together examined the state of AT products and the product-development activities of AT manufacturers. The second phase of research examined four customer-focused product design methods for their suitability for utilisation by small companies within the AT sector. On finding that no method in its entirety was suitable, a customer-focused design tool for small AT companies was developed. The resulting tool comprises eight elements for application in the initial stages of the product development process. The tool was tested in four separate studies, which examined its usability and acceptability to AT companies and which gave further insights into the AT sector. The research both finds that AT products are failing the customer in five areas and that manufacturers are contributing to this failure through a lack of customer-focus in their design processes. In addition to identifying the market research and product development activities of small AT companies, a key contribution to knowledge resulting from the research is the concept of sectoral readiness for methods of design. In its conclusion the thesis finds that the two research objectives have been met.
56

A Search For Common Pleasures: CURATING THE CITY

Helsel, Sand, n/a January 2009 (has links)
The project-based research questions how professionals working in the built environment can engage a broader range of 'others' (students, client, users) in ways of seeing and acting in a meaningful way. It challenges the role of the expert in architecture and urban design and in particular their use of the masterplan, which is often an oversimplified reductive response, laden with generalisations and the ill-considered overlay of inappropriate models. Design methods are designed to enable us to see afresh and respond accordingly. These are demonstrated in three suites of projects that include urban installations such as Five Walks for the Melbourne International Arts Festival, war memorials, lectures, photographs and teaching practice such as Taipei Operations, a student workshop, architectural exhibition, and book. The design research is situated within an expanded field of cross-disciplinary practice that includes art, landscape architecture, urban design, architecture and geography. Tools are developed to enable us to understand the city at many spatial and temporal scales; observations made at a micro scale reveal systems at a macro scale - a bottom-up approach. The application of the methods explored implies that
57

Verificação da adequabilidade do método BioTRIZ na aplicação da biomimética no ensino de projeto de arquitetura

Cunha, Ronnie Elder da 15 January 2015 (has links)
Submitted by Viviane Lima da Cunha (viviane@biblioteca.ufpb.br) on 2016-07-18T11:12:20Z No. of bitstreams: 1 arquivototal.pdf: 5119582 bytes, checksum: 2cc562a3ca67f59ee9fbfbf94b1c3175 (MD5) / Made available in DSpace on 2016-07-18T11:12:20Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 5119582 bytes, checksum: 2cc562a3ca67f59ee9fbfbf94b1c3175 (MD5) Previous issue date: 2015-01-15 / Despite the fact that biomimicry has been widely used in the fields of design and engineering, its application methods in architectural design are not yet clear, especially in the architectural design education. The transfer of a concept or mechanism of a living organism for non-living systems is not a trivial task and requires knowledge between two domains, the biological and the design. The BioTRIZ, a systematic method and especially developed based on biological phenomena, does not require deep understanding about natural organisms. This study aimed at verifying the adequability of BioTRIZ method in the application of biomimetic concepts in atelier design teaching in the early periods of the architecture program. Exploratory case studies was used through design exercises in models atelier classes with the 3rd semester students of the Architecture and Urban Planning Program of the Federal University of Paraiba. The work proceedings were divided into eight steps: variables definition, pilot studies, teams training, data collection in design exercises with application of BioTRIZ method, questionnaires, focus groups sessions, data analysis and results discussion. It was concluded that BioTRIZ method was not entirely suitable for design education in models atelier, due to the limited design repertoire of students, the difficulties in avoiding fixation on predefined ideas and limitations in the ability to transform specific features in abstract ones and vice versa, all those being requirements for effective use of BioTRIZ method. / Apesar de a biomimética ser bastante utilizada nos campos do design e da engenharia, os seus métodos de aplicação no projeto arquitetônico ainda não são claros, sobretudo no ensino de projeto. A transferência de um conceito ou mecanismo de um organismo vivo para sistemas não vivos não é uma tarefa trivial e requer conhecimento entre dois domínios, o biológico e o de design. O BioTRIZ, método sistemático e especialmente desenvolvido com base em fenômenos biológicos, dispensa conhecimento profundo sobre organismos naturais. O presente trabalho teve como objetivo principal verificar a adequabilidade do método BioTRIZ na aplicação de conceitos biomiméticos no ensino de projeto em ateliês nos períodos iniciais do curso de Arquitetura. Utilizou-se de estudos de caso de caráter exploratório por meio de exercícios de projeto em ateliê de plástica com turmas do 3º período do curso de Arquitetura e Urbanismo da Universidade Federal da Paraíba. O trabalho foi dividido em oito etapas: definição das variáveis, estudos piloto, treinamento das equipes, coleta de dados em exercícios de projeto com aplicação do método BioTRIZ, aplicação de questionário, execução de grupos focais, análise de dados e discussão dos resultados. Concluiu-se que o método BioTRIZ não se mostrou totalmente adequado ao ensino de projeto em ateliês de plástica, devido ao limitado repertório projetual dos alunos, às dificuldades em evitar fixação em ideias predefinidas e às limitações na capacidade de transformar características específicas em abstratas e vice-versa, requisitos necessários para o eficaz emprego do método.
58

Development of a lean design framework for enhancing the application of product design

Alam, Rahman January 2015 (has links)
Substantial benefits can be achieved through the adoption of lean type thinking earlier at the design stage to create more viable products. A complex design cannot be easily leaned out in production; therefore, the production of affordable and sustainable products requires effective lean design considerations at the conceptual level. The research presented in this thesis investigates and demonstrates the application of lean design for product enhancement. The aim of the research was to develop a novel lean design framework that would support the generation of product design with attributes such as maximise value, manufacturable, and operable with minimum waste and resources ensuring avoidable harm is eliminated. The framework consists of a systemised process which is organised in to phases and activities that provides a unique practical manner to lean out a design. The construction of the framework initiated with an extensive literature review and proceeded with an industrial field study which consisted of 34 interviews with 11 manufacturing companies in Europe. The findings were amalgamated to generate a lean design definition and principles which would form the foundations of the framework. A real-life industrial case study of an offshore oil/water separator was used to validate the framework. In conclusion, the lean design framework provides the necessary means by which a lean design can be achieved. As a result a functionally viable and enhanced design that is cheaper to manufacture through controlling waste and eliminating avoidable harm occurrence can be realised with minimal effort. The research makes the following contributions: (1) identification of essential elements in lean design, (2) generation of a lean design definition and principles, (3) Lean Design Framework development and (4) illustrative guidelines based on the framework to be used by designers in realising a lean product design.
59

Core design aspects

Wilson, Jacqueline Anne January 2011 (has links)
This statement gives an overall summary of the aims and achievements of the research work and scholarship carried out by the author during her time at The University of Manchester (and UMIST - now part of The University of Manchester) for which the publications presented give evidence. The research has been about exploring the design process, the activities and issues, and elements involved - from both an industry and student point of view. The publications explore design pedagogy, the skills required by designers and how these might fit into a curriculum for design today.In three parts it summarises the publications presented, reviews the main aspects of design and the current state of knowledge and research in design and summarises the core aspects as distilled from over 36 years practice, research and scholarship.The driver for much of the research undertaken has been to gain a better understanding of the core aspects of design - what key knowledge and skills are required by designers to allow the consistent design of better products and services which enhance the experiences of users. The work presented investigates design and design methods: the activities and processes and the elements involved. It considers responses to designs, the emotional aspect of design - why some designs are preferred over others, why some colour combinations are more desirable, and why repetition is so important to the human psyche. Underpinning the work presented are three research questions. • Are design rules and processes generic for whatever is being designed? • Can a better understanding of design theory and the emotional response to designs ensure a more effective process and thus lead to stronger designs? • Can students be educated to be better design thinkers and ultimately better designers? It concludes that: • 'design' is a process; • design is a problem-solving process and problem-solving is a design process; • for the most effective outcomes a creative and structured approach is required; • this process is based on generic rules and principles which are applicable across all discipline areas; • collaborative/cross disciplinary elements reinforce the concept that there are processes involved that are not unique to individuals or discipline specific; • a greater understanding of the process is of benefit to all individuals and organisations; • any design/problem solving activity will normally result in more than one solution option. The results of the research have informed the author's teaching practice and have been disseminated through publications to benefit the wider education arena. The work presented aims to inform students and design education practitioners.
60

Metody návrhu platebních protokolů / Methods of the Payment Protocols Design

Matúška, Peter January 2011 (has links)
This paper analyses some existing approaches in security and payment protocol design. It describes protocol design using simple BAN logic and using derivation system. Special attention is paid to composition method, which is based on the design of complicated protocols from small parts called primitives and it is demonstrated on design of purchase procedure of SET protocol. This method was automated and implemented in C++ language, which allows designer to generate set of candidate protocols according to his needs and this set can be further used for next phase of protocol design process.

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