Dissertations / Theses: 'Design Conceptual Framework'

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Pun, Raymond Chee Wing. "A decision framework for conceptual engineering design." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/18848.

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Rehman, Fayyaz Ur. "A framework for conceptual design decision support." Thesis, University of Strathclyde, 2006. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=24303.

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The decisions made at the conceptual design stage are crucial to the overall success of the product as they affect all the downstream phases of the product life cycle, the user satisfaction of the product and the environment that the product is used and disposed of. The consequences due to these design decisions could therefore be good or problematic. Due to the lack of availability of knowledge and understanding about the complexity of such knowledge spanning these different areas, designers find it difficult to know the implications of their decisions made at the conceptual stage on the product's life cycle, the user of the product and the environment in which the product operates. Reviews of existing methodologies reveal that there is a, need for a holistic view of knowledge in terms of the total context of the design problem under consideration to aid designers in their decision making at the conceptual design stage. This thesis addresses this problem by proposing, implementing and evaluating a computational framework for supporting decision making at the conceptual design stage. The need for considering the implications of design decisions on other life cycle stages of the product and using the whole context of the design problem lead to the characterization and formalization of the Design Context Knowledge into different groups and context knowledge categories. This structuring facilitates the creation of feasible design solutions composed of what is called Product Design Elements (PDEs) i.e. basic elements as a functional means to constitute a conceptual product design solution. The proposed Function to POE mapping model uses the aforesaid design context knowledge structured in different categories for reasoning and eliciting consequences, associated with selecting a particular design solution and determining its implications on the product's subsequent life cycle stages, user of the product and on the product itself. After developing a system architecture model based on the system requirements, the PROCONDES prototype system has been implemented for a sheet metal component design domain. An evaluation of PROCONDES performed by conducting a case study indicates the importance of design context knowledge in proactively supporting effective decision making during function to POE mapping process (i.e. conceptual design stage) by generating timely potential (good and problematic) consequences. However, further work is required to improve the model and its implementation to fully explore the approach and use of PROCONDES for real-time design scenarios.

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Schumann, Benjamin. "Aeronautical life-cycle mission modelling framework for conceptual design." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/366537/.

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This thesis introduces a novel framework for life cycle mission modelling during conceptual aeronautical design. The framework supports object-oriented mission definition using Geographical Information System technology. Design concepts are defined generically, enabling simulation of most aeronautical vessels and many non-aeronautical vehicles. Moreover, the framework enables modelling of entire vessel fleets, business competitors and dynamic opera-tional changes throughout a vessel life cycle. Vessels consist of components deteriorating over time. Vessels carry payload that operates within the vessel environment. An agent-based simulation model implements most framework features. It is the first use of an agent-based simulation utilising a Geographical Information System during conceptual aero-nautical design. Two case studies for unmanned aircraft design apply the simulation. The first case study explores how the simulation supports conceptual design phase decisions. It simulates four different unmanned aircraft concepts in a search-and-rescue scenario including lifeboats. The goal is to learn which design best improves life cycle search performance. It is shown how operational and geographical impacts influence design decision making by generating novel performance information. The second case study studies the simulation optimisation capability: an existing aircraft design is modified manually based on simulation outputs. First, increasing the fuel tank capacity has a negative effect on life cycle performance due to mission constraints. Therefore, mission definition becomes an optimisation parameter. Changing mission flight speeds during specific segments leads to an overall improved design.

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Holm, Anders, and Kullström Christoffer Sundberg. "User Responsive User Experience Design: Building a Conceptual Framework." Thesis, Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-1036.

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To a large extent, business-customer interactions are acted out on digital meeting places. When the possibilities for businesses to engage in face-to-face interactions decrease, relationship building and customer service becomes more of a challenge. Digital services are easily duplicated by competitors and with standardization of interfaces and products, customers tend to switch more frequently between providers. One area where the creation and maintenance of loyal customers appears to be highly relevant is the domain of e-banking. Studies have shown that by personalizing the experience for the user, customer loyalty can be enhanced. Existing methods of interface adaptation shifts the responsibility for the resulting user experience design from the designer to either the user or the system. However, research shows that handing over responsibility for the design to the user can damage the user experience. Furthermore, we argue that as long as computers cannot translate the meaning of what a human communicates, and understand the motivation that lies behind her actions, human designers and researchers need to own the responsibility for designing user experiences. Responsive web design differ from the concept of user responsiveness in the way that it is not truly responsive to the user but to the technical device that is used. Following a design science research methodology, this paper presents the development of a conceptual framework for user responsive user experience design (URUXD) that aims to strengthen the bond between user and provider by enabling a more relevant and personalized user experience. The conceptual framework introduces a way to design user responsive information systems that could be useful in domains where the user audience is large and diverse, as in the case of e-banking. A personalized user experience is enabled by transcending the current use of personas as design tools to also involve them in categorizing real-time users through the use of personas as mapping tools. Multiple persona sets are incorporated in the framework which gives the user experience designer the possibility of designing a holistic user experience for each persona set. The framework thus enables the incorporation of multiple GUI designs in an information system that is user responsive, without the risk of violating usability principles.
Interaktionen mellan företag och kund sker nuförtiden oftast på digitala mötesplatser. När möjligheten för företag att träffa kunden öga mot öga minskar blir det en utmaning att skapa nära affärsrelationer och förmedla bra kundservice. Med konkurrenter som enkelt kopierar digitala tjänster och med en standardisering av gränssnitt och tjänster tenderar kunder att oftare byta leverantör. Inom e-banking framstår därför skapande och upprätthållande av lojala kunder som högst relevant. Genom att personifiera användarupplevelsen kan kundlojaliteten förbättras. Befintliga metoder för gränssnittsadaption lämnar över ansvaret för den resulterande designen från designern till antingen användaren eller systemet. Men, om ansvaret för designen tilldelas användaren kan resultatet bli i en skadad användarupplevelse. Så länge datorer inte kan översätta meningen bakom vad en människa kommunicerar eller skapa en förståelse för en användares bakomliggande motivation till varför hen utför handlingar, måste mänskliga designers inneha ansvaret för designen av användarupplevelsen. Vidare skiljer sig responsiv webbdesign från konceptet användarresponsivitet i meningen att responsiv webbdesign inte är direkt responsiv mot användaren utan snarare mot den tekniska apparat som används. Genom att följa en design science forskningsmetodik utvecklades ett konceptuellt ramverk för design av användarresponsiva användarupplevelser (user responsive user experience design (URUXD)). Målet var att stärka bandet mellan användare och leverantör genom att möjliggöra en mer relevant och personifierad användarupplevelse. Det konceptuella ramverket introducerar ett sätt att designa användarresponsiva informationssystem vilket kan vara användbart i domäner där användargruppen är stor och heterogen, vilket är fallet för e-banking. En personifierad användarupplevelse möjliggörs genom att utöka det befintliga användningsområdet för designverktyget personas till att även inkludera dem som mappningssverktyg för att kategorisera användare i realtid. Multipla persona sets införlivas i ramverket vilket skapar möjlighet för designern att skapa en holistisk användarupplevelse för varje enskilt persona set. Det konceptuella ramverket möjliggör därigenom för multipla gränssnittdesigns för ett informationssystem som därmed blir användarresponsivt, utan att underminera principer för användbarhet.

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Gedig, Michael. "A framework for form-based conceptual design in structural engineering." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/23481.

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Conceptual structural design is a process through which structural forms are created. The forms are shaped by a set of design requirements representing the expected function, and by constraints that reflect physical laws and practical limitations. There is no direct mathematical transformation from requirements to a form; the conceptual design process is nonlinear and iterative. Like all creative processes, it is most effective when ideas can be rapidly synthesized, dissolved, combined and evolved. In structural design, these ideas need to be evaluated in the context of performance, functionality, and cost. Conceptual design, compared to later design stages, is characterized by a high degree of uncertainty and a general lack of knowledge. A key objective in conceptual structural design is therefore to rapidly create, modify and evaluate vague or abstract structural forms. This work describes a computational framework to support conceptual structural design, emphasizing the importance of form. Techniques from image processing, pattern recognition and linguistics are used to describe, classify, and reason with forms at high levels of abstraction. Most other computer applications in conceptual structural design describe design concepts in terms of words or through simplified spatial relationships. This work highlights the central role that visual information plays in formulating ideas in conceptual design. The major contributions of this work are an efficient method for synthesizing conceptual designs of discrete structures, and the application of pattern recognition and visual case-based reasoning techniques to conceptual structural design. The framework is directed towards large-scale discrete structures characterized by interconnected linear elements. During synthesis, forms are initially created using topology optimization methods; these forms are processed to extract high level information that supports further structural optimization, including the assessment of stability and relative cost. The high level information is used to describe, classify and store conceptual forms for case-based reasoning. A novel feature of the work is that arbitrary images of shapes may be interpreted as structures by using visual similarity to infer potential boundary conditions, functionality, and behaviour for those shapes. This dissertation gives a complete description of the framework, along with sample applications. A proof-of-concept computer application is also described.

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Sethebe, Keaboka M. "The development of product design guidelines based on a new conceptual framework." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/11173.

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The work described provides the development, implementation and evaluation of engineering product design guidelines suitable for engineering product designers. The motivation arises from collaborative efforts that continue to be made by the Least Economically Developed Countries (LDC) and the Most Economically Developed Countries (MDC) towards the development of the engineering design field. It is argued here that product design guidelines which are derived from existing product design methods enhance the capability of engineering designers to shorten time to market, deal adequately with product design constraints and boost supply chains. The sample for the proposed study is comprised of companies in Botswana (a least economically developed country) and the United Kingdom (a most economically developed country). The research has been conducted using a mixed qualitative research approach comprised of aspects from the framework method, cluster analysis and Kolb's model. The findings have identified five themes central to the product design process which are incorporated into the engineering product design guidelines. Case study work was conducted to validate the approach. The following claims are made for contributions to knowledge: 1. A conceptual framework which is a graphical co-ordinate system of engineering and management techniques required by nine engineering product design methods. The conceptual framework is arranged according to two orthogonal axes that describe the structure of the product design process and incorporate the need function form structure, the divergent convergent structure, the product design drivers, product realisation process and product development lifecycles. 2. The product design method notation which is a register of the expressions derived from the conceptual framework and is used to communicate and aid in the selection of a group of techniques being implemented, or intended for implementation by design teams; and 3. The configuration scheme which provides a clear link between components, subassemblies, products, projects, programmes and policies. The critical point put forward by this work is that the conceptual framework is only comprehensible today because the engineering product design methods in the public domain have imparted knowledge about the functions of physical products (described here as part of the need function form structure) at the expense of human needs and the interactive forms of human responses to physical products. The contributions of this research provide a holistic and coherent means of integrating design methodologies for the benefit of design teams in Botswana. The approach is, however, universal and may also be beneficial for design projects in the most economically developed countries.

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Amadori, Kristian. "On Aircraft Conceptual Design : A Framework for Knowledge Based Engineering and Design Optimization." Licentiate thesis, Linköping : Department of Management and Engineering, Linköpings universitet, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11873.

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Koegst, Thilo. "Ontology based model framework for conceptual design of treatment flow sheets." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-139773.

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The primary objective of wastewater treatment is the removal of pollutants to meet given legal effluent standards. To further reduce operators costs additional recovery of resources and energy is desired by industrial and municipal wastewater treatment. Hence the objective in early stage of planning of treatment facilities lies in the identification and evaluation of promising configurations of treatment units. Obviously this early stage of planning may best be supported by software tools to be able to deal with a variety of different treatment configurations. In chemical process engineering various design tools are available that automatically identify feasible process configurations for the purpose to obtain desired products from given educts. In contrast, the adaptation of these design tools for the automatic generation of treatment unit configurations (process chains) to achieve preset effluent standards is hampered by the following three reasons. First, pollutants in wastewater are usually not defined as chemical substances but by compound parameters according to equal properties (e.g. all particulate matter). Consequently the variation of a single compound parameter leads to a change of related parameters (e.g. relation between Chemical Oxygen Demand and Total Suspended Solids). Furthermore, mathematical process models of treatment processes are tailored towards fractions of compound parameters. This hampers the generic representation of these process models which in turn is essential for automatic identification of treatment configurations. Second, treatment technologies for wastewater treatment rely on a variety of chemical, biological, and physical phenomena. Approaches to mathematically describe these phenomena cover a wide range of modeling techniques including stochastic, conceptual or deterministic approaches. Even more the consideration of temporal and spatial resolutions differ. This again hampers a generic representation of process models. Third, the automatic identification of treatment configurations may either be achieved by the use of design rules or by permutation of all possible combinations of units stored within a database of treatment units. The first approach depends on past experience translated into design rules. Hence, no innovative new treatment configurations can be identified. The second approach to identify all possible configurations collapses by extremely high numbers of treatment configurations that cannot be mastered. This is due to the phenomena of combinatorial explosion. It follows therefrom that an appropriate planning algorithm should function without the need of additional design rules and should be able to identify directly feasible configurations while discarding those impractical. This work presents a planning tool for the identification and evaluation of treatment configurations that tackles the before addressed problems. The planning tool comprises two major parts. An external declarative knowledge base and the actual planning tool that includes a goal oriented planning algorithm. The knowledge base describes parameters for wastewater characterization (i.e. material model) and a set of treatment units represented by process models (i.e. process model). The formalization of the knowledge base is achieved by the Web Ontology Language (OWL). The developed data model being the organization structure of the knowledge base describes relations between wastewater parameters and process models to enable for generic representation of process models. Through these parameters for wastewater characterization as well as treatment units can be altered or added to the knowledge base without the requirement to synchronize already included parameter representations or process models. Furthermore the knowledge base describes relations between parameters and properties of water constituents. This allows to track changes of all wastewater parameters which result from modeling of removal efficiency of applied treatment units. So far two generic treatment units have been represented within the knowledge base. These are separation and conversion units. These two raw types have been applied to represent different types of clarifiers and biological treatment units. The developed planning algorithm is based on a Means-Ends Analysis (MEA). This is a goal oriented search algorithm that posts goals from wastewater state and limit value restrictions to select those treatment units only that are likely to solve the treatment problem. Regarding this, all treatment units are qualified according to postconditions that describe the effect of each unit. In addition, units are also characterized by preconditions that state the application range of each unit. The developed planning algorithm furthermore allows for the identification of simple cycles to account for moving bed reactor systems (e.g. functional unit of aeration tank and clarifier). The evaluation of identified treatment configurations is achieved by total estimated cost of each configuration. The planning tool has been tested on five use cases. Some use cases contained multiple sources and sinks. This showed the possibility to identify water reuse capabilities as well as to identify solutions that go beyond end of pipe solutions. Beyond the originated area of application, the planning tool may be used for advanced interrogations. Thereby the knowledge base and planning algorithm may be further developed to address the objectives to identify configurations for any type of material and energy recovery.

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Chaiworawitkul, Sakda 1977. "A design performance driven learning framework for conceptual design knowledge : methodology development and applications." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/46551.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, February 2008.
Pages 169 and 170 blank.
Includes bibliographical references (p. 165-167).
This thesis develops a learning framework for automation of acquisition of bridge conceptual design knowledge. The thesis proposes a new learning methodology explicitly aimed at capturing quality design aspects to help engineer gain insight into good design. The research uses the National Bridge Inventory (NBI) data, which contains more than 600,000 bridges. The physical condition ratings are used as proxies for design quality. In this data the relationships between physical condition ratings and bridge design elements are not well-known. The simultaneous equation model (SEM) technique is employed to model the physical condition ratings. SEM has the advantage over existing methods of state transition probability estimation in that no a-priori subjective conditional grouping is required. The resulting model yields the marginal effects of design variables on condition ratings, which is easy for engineers to interpret. The analysis results reveal that design features available in the NBI database alone do not adequately explain the resulting condition ratings. Using the identified performance model, COBWEB, an incremental clustering algorithm, is employed to learn mappings from design specification to configuration space. However, the COBWEB branching strategy focuses on probabilistic predictability of feature values. The learned knowledge therefore represents not clusters of good design aspects but rather clusters of local similarity. A modification to the existing strategy is proposed. A set of experiments has been conducted to compare the original and the modified COBWEB. Finally, the thesis provides a detailed discussion of issues related to the quality of the NBI database and proposes strategies for improved analysis of the NBI bridge data.
by Sakda Chaiworawitkul.
Ph.D.

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Prekas, Nikolaos. "Pattern-based reuse of organisational design knowledge : conceptual framework and hypermedia library." Thesis, University of Manchester, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488395.

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Dewang, Harianas. "Design of an AirportLodging Option using a Reliability Method : A Conceptual Framework." Thesis, KTH, Optimeringslära och systemteori, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-238503.

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Engineering products ranging from simple components to complex systems should be designed optimally with high level of reliability. The challenge here is to ensure that manufacturing costs are reduced while achieving requirements for safety and reliability. Simulation based design plays an important role in designing almost any kind of aerospace and consumer products under the competitive conditions. Single discipline simulations used for analysis are coupled together to create complex coupled simulation tools. This investigation focuses on the safety analysis for first order reliability method in a simulation-based design environment.
Tekniska produkter från enkla komponenter till komplexa system bör utformas optimalt med hög tillförlitlighet. Utmaningen här är att säkerställa att tillverkningskostnaderna sänks samtidigt som krav på säkerhet och tillförlitlighet uppnås. Simulationsbaserad design spelar en viktig roll vid utformningen av nästan alla slags flyg och konsumentprodukter under konkurrensförhållandena. Enkla disciplin-simuleringar som används för analys kopplas samman för att skapa komplexa kopplade simuleringsverktyg. Denna undersökning fokuserar på säkerhetsanalysen för första ordningens tillförlitlighet i en simuleringsbaserad designmiljö.

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Lu, Zhijie. "Data Management in an Object-Oriented Distributed Aircraft Conceptual Design Environment." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14548.

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Aircraft conceptual design, as the first design stage, provides major opportunity to compress design cycle time and is the cheapest place for making design changes. However, traditional aircraft conceptual design programs, which are monolithic programs, cannot provide satisfactory functionality to meet new design requirements due to the lack of domain flexibility and analysis scalability. Therefore, we are in need of the next generation aircraft conceptual design environment (NextADE). To build the NextADE, the framework and the data management problem are two major problems that need to be addressed at the forefront. Solving these two problems, particularly the data management problem, is the focus of this research. In this dissertation, a distributed object-oriented framework is firstly formulated and tested for the NextADE. In order to improve interoperability and simplify the integration of heterogeneous application tools, data management is one of the major problems that need to be tackled. To solve this problem, taking into account the characteristics of aircraft conceptual design data, a robust, extensible object-oriented data model is then proposed according to the distributed object-oriented framework. By overcoming the shortcomings of the traditional approach of modeling aircraft conceptual design data, this data model makes it possible to capture specific detailed information of aircraft conceptual design without sacrificing generality. Based upon this data model, a prototype of the data management system, which is one of the fundamental building blocks of the NextADE, is implemented utilizing the state of the art information technologies. Using a general-purpose integration software package to demonstrate the efficacy of the proposed framework and the data management system, the NextADE is initially implemented by integrating the prototype of the data management system with other building blocks of the design environment. As experiments, two case studies are conducted in the integrated design environments. One is based upon a simplified conceptual design of a notional conventional aircraft; the other is a simplified conceptual design of an unconventional aircraft. As a result of the experiments, the proposed framework and the data management approach are shown to be feasible solutions to the research problems.

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Derrick, Emory Joseph. "A visual simulation support environment based on a multifaceted conceptual framework." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06062008-171636/.

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Freixieiro, Gomes de Mello Rafael. "Design-led future forecasting model for mobile communications." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/13142.

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Since the establishment of the wireless sector, design has been playing a wide range of roles. Specialized literature has been extensively reporting the use of this discipline associated with NPD, focusing on hardware and software development in the mobile communications. On the other hand, evidences of its use to support forecasting are scarce and generic. Finally, formal publications addressing future forecasting from a design perspective in the context of mobile communications have never been reported, leading to a knowledge gap that needs to be addressed. This research investigates the strategic roles, applications and contributions of design and designers for future forecasting in the wireless telecom sector. As a comprehensive discipline, it is used to examine and identify a number of factors that might influence/impact in the development of visionary solutions supporting the design team of traditional handset manufacturers to make better decisions in order to ‘shape’ the future in the wireless industry. Considering these ideas, the aim of this research is to create a ‘design-led future forecasting model for mobile communications’ to assist and support traditional manufacturers’ design team. This PhD study relies on a qualitative methodology comprising a number of data collection and analysis tools (e.g. literature review, case studies analysis, in-depth experts’ interviews, workshops and Grounded Theory). To create the intended framework, extensive secondary and primary data; theoretical and practical inputs were brought together, analysed and combined. The proposed model was evaluated through two rounds of experts’ interviews complemented by two workshops with potential users (e.g. design students) to check and explore its practicalities when applied to design for the future. Finally, this study bridges future forecasting and the wireless telecom through the use of design to address the literature gap. The richness of the developed model provides practical assistance to traditional manufacturer’s design team informing about a broad spectrum of aspects that should be considered when designing for the future in the mobile telecom industry, supporting strategic decision making in different stages of the future-led design process.

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Kim, Jin Kyung. "A Conceptual Framework for Assessing Post-Earthquake Fire Performance of Buildings." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-theses/306.

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Earthquakes can severely damage building structural and nonstructural systems and components, including active and passive fire protection and egress systems. If the occurrence of such damage is not anticipated at the design stage, the impact of a post-earthquake fire could be significant, as building and fire protection systems may not perform as expected. Unfortunately, even though both the seismic and fire engineering communities utilize performance-based approaches for designing well-performing and resilient buildings under earthquake and fire hazards respectively, each discipline carries out their associated building performance analyses independently. As a result, fire protection engineers have little guidance as to how to estimate structural and nonstructural building systems and component damage as inputs to help them develop post-earthquake building fire scenarios. To help bridge this gap, a conceptual framework is developed that illustrates how performance-based approaches for earthquake and fire engineering analysis and design can become more integrated for the development of post-earthquake fire scenarios. Using a fictional building in an earthquake prone area as an example, the conceptual framework is implemented to show (a) how earthquake-induced damage to building fire protection systems could be estimated using an earthquake performance assessment tool, (b) how the damage estimates might be translated into physical damage parameters in a way that is meaningful for developing post-earthquake building fire scenarios, (c) how the damage states might be implemented in terms of fire and egress modeling input parameters, and (d) how this information could be used to and compare post-earthquake building fire safety performance to a normal(undamaged) building fire conditions.

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Terpenny, Janis Pinchefsky. "A methodology and supporting framework for functional modeling and configuration in conceptual design." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/30229.

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Mårtensson, Per. "Framework for cost and weight efficient conceptual design of automotive composite body structures." Doctoral thesis, KTH, Lättkonstruktioner, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-185213.

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The automotive industry is facing a great challenge - reducing the weight of their vehicles. Carbon fibre composites are regarded by many as the only real option as traditional engineering materials are now running out of potential for further weight reduction. In this doctoral thesis a framework is presented which will provide guidelines for the conceptual phase of the development of an automotive composite body structure. The framework is initiated by defining ideal material diversity, as well as initial partition of the body structure based on process and material selection. Then, a further analysis of the structures is made in order to evaluate whether a more cost efficient solution can be found by further dividing the structure. Such a differential design approach is analysed in the third part of the work, studying both the financial and structural effects of such partitioning. In order to increase the understanding of the intimate relationship between design, material and manufacturing process, balancing manufacturing and structural optimization is addressed. Finally, drape simulation tools are used to assess the geometric complexity of composite structures in order to further quantify suitable split lines in cases of differential design approach. Different carbon fibre composite material systems and processes are compared and evaluated in the work. The results show that a high-performance material system with continuous fibres is both more cost and performance effective as compared to industrialised, discontinuous fibre composites. Further analysis shows the importance of balancing the design for manufacturing and the structural weight optimization of the structures in order to reach a cost and weight effective design. When restricting composite design freedom with manufacturing constraints, the great benefits of structural composites disappear and with this both weight and cost effectiveness.

QC 20160418

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Tillmann, Patrícia André. "A conceptual framework for improving value generation in complex construction projects." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/75905.

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Esta pesquisa foi motivada pela observação de um problema prático com potenciais contribuições teóricas. O problema em questão é a dificuldade de gerenciar projetos complexos de construção de modo que os objetivos estratégicos de sua implementação sejam alcançados, problema observado em um complexo programa de reestruturação urbana na cidade de Porto Alegre. Estudos indicam que nas últimas décadas houve um aumento na complexidade de gestão de projetos que resultou em desafios para as práticas gerenciais tradicionalmente adotadas. Alguns autores relacionam esse aumento de complexidade com uma demanda, cada vez maior, de compreender como projetos estão alinhados com os objetivos estratégicos e como irão contribuir para a geração dos benefícios esperados pelos diversos agentes intervenientes de um projeto. Dentro deste contexto, a falta de suporte dado pelas tradicionais praticas gerenciais é apontada. As críticas focam não só na falta de alinhamento estratégico e na dificuldade de gerenciar interesses conflitantes, mas também na dificuldade de lidar com a susceptibilidade desses projetos ao contexto politico, econômico e social no qual se inserem, e com a dinâmica desse contexto. Dentro deste contexto, foram identificadas duas abordagens gerenciais que emergem no contexto da construção civil em resposta às deficiências observadas: a Benefits Realisation Approach (BeReal) e o Lean Project Delivery System (LPDS). O foco da literatura existente sobre essas abordagens é predominantemente de caráter prescritivo, oferecendo modelos e métodos para sua aplicação. Identificou-se portanto a necessidade de avaliar a contribuição dessas abordagens para lidar com os desafios observados e contribuir para a melhoria do suporte a geração de valor em projetos complexos. Uma terceira abordagem, a Logical Framework Approach (LFA), utilizada no programa onde o problema foi identificado, também foi avaliada, pois é sugerido na literatura que ela oferece suporte para lidar com alguns aspectos da complexidade dos projetos. O processo de pesquisa envolveu as principais etapas de Design Science Research: encontrar um problema prático e com potencial para contribuição teórica, obter um entendimento deste problema, desenvolver ou identificar potencial solução, testar a solução, avaliando sua utilidade, e avaliar a contribuição teórica desta solução. Neste estudo, ênfase foi dada à avaliação das potenciais soluções identificadas. Três estudos empíricos foram realizados: o primeiro teve como objetivo entender o problema - programa de reestruturação urbana em Porto Alegre/Brasil; o segundo para avaliar as contribuições da adoção da BeReal em um programa de reestruturação de um campus hospitalar em Brighton/Inglaterra; e o terceiro para avaliar as contribuições do LPDS em um projeto de um hospital em San Carlos/Estados Unidos. Os três estudos apresentam diferentes contribuições gerenciais para o suporte a geração de valor em projetos complexos de construção. Tais contribuições são explicadas com base em um referencial teórico desenvolvido, formando um modelo conceitual que explica as mudanças necessárias no contexto de gestão de empreendimentos complexos para um melhor foco na geração de valor e como as diferentes praticas observadas e mecanismos de suporte contribuem para esta mudança.
This research was motivated by a practical problem with potential theoretical contributions. The problem in hand is the difficulty to generate value in complex construction projects, a problem observed in a large urban regeneration programme in Porto Alegre. Past research indicate that in the last decades there was an increase in project complexity, posing challenges to traditional managerial practices. According to some authors, such complexity is partially due to an increasing concern to understand how project’s outputs contribute to generating change and delivering benefits to different stakeholder groups. Within this context, the lack of managerial support provided by traditional project management approaches is pointed out. Firstly because such approaches generally focus on the delivery of a physical product, within time and budget. Secondly, they do not provide support for dealing with the conflicting interests of multiple stakeholders. And thirdly because they do not properly consider that projects are susceptible to their economic, social and political context and subject to changes in such environment. In this research, two managerial approaches that are being used in the construction industry were identified as having potential contributions to improve value generation in complex projects: the Benefits Realisation Approach (BeReal) and the Lean Project Delivery System (LPDS). The literature available about these approaches is mainly prescriptive. Thus, there is still a need to understand why and how such approaches contribute for value generation. A third approach, the Logical Framework Approach (LFA) used where the problem was identified, was also analysed, as the literature suggests it also offers contributions to deal with some aspects of complexity. This research followed a Design Science Research process: finding a practical problem with potential theoretical contributions, framing the problem and searching for potential solutions, understanding how and why the solutions contribute for solving the problem and analyse the theoretical contributions of the solutions. In this study, emphasis was given to the evaluation of potential solutions identified. Three empirical cases were realised: the first one was in a urban regeneration programme in Brazil, aiming to understand the problem; the second was realised in a healthcare infrastructure programme in the UK, to analyse the adoption of BeReal; and the third in a healthcare infrastructure programme in the US, to analyse the adoption of LPDS. The three studies presented different managerial contributions to support value generation. Such contributions are analysed based on a conceptual framework that was devised. The model reveals the underlying concepts of observed managerial practices that contribute towards the improvement of value generation.

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Lloydd, Delwyn. "Evaluation of the Conceptual Framework for Performance Based Fire Engineering Design in New Zealand." Thesis, University of Canterbury. Civil Engineering, 2008. http://hdl.handle.net/10092/2754.

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The Department of Building and Housing is currently developing a performance framework that will, if adopted, provide a compulsory methodology for performance based fire engineering designs to prove compliance with the fire safety requirements of the New Zealand Building Code. The conceptual performance framework currently includes eight design fire scenarios, fire loads for particular building uses, and tenability criteria for the life safety of occupants. As the level of fire safety within the Code is not explicit, the Department of Building and Housing determined that the performance framework for fire should ensure buildings are designed and built to provide the same level of safety as if they complied with the current Compliance Document for New Zealand Building Code Fire Safety Clauses, C/AS1. This work analysed 12 buildings with a range of uses, which comply with the current C/AS1, using the conceptual performance framework to provide a risk comparison for life safety. Accepted, previously established calculation and modelling methods were used to test the case buildings to the performance framework. None of the buildings met the pass criteria proposed for life safety. Consequently, to comply with the performance framework, a building would be required to be designed to a higher level of safety than is currently accepted to meet code. This shows the current proposal provides a more onerous design regime for fire safety for buildings than the current C/AS1. The results of this research show the conceptual performance framework for fire safety is not ready to be included into New Zealand building regulations in its present form. Furthermore, protection from fire for primary structural members and systems, to protect against building collapse, and tenability criteria and fire fighting access for fire fighters needs to be developed and included in the framework.

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Potter, Charles Lee. "A conceptual level framework for wing box structural design and analysis using a physics-based approach." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54940.

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There are many challenges facing the aerospace industry that can be addressed with new concepts, technologies, and materials. However, current design methods make it difficult to include these new ideas early in the design of aircraft. This is especially true in the structures discipline, which often uses weight-based methods based upon statistical regressions of historical data. A way to address this is to use physics-based structural analysis and design to create more detailed structural data. Thus, the overall research objective of this dissertation is to develop a physics-based structural analysis method to incorporate new concepts, technologies, and materials into the conceptual design phase. The design space of physics-based structural design problem is characterized as highly multimodal with numerous discontinuities; thus, a large number of alternatives must be explored. Current physics-based structural design methods tend to use high fidelity modeling and analysis tools that are computationally expensive. This dissertation proposes a modeling & simulation environment based on classical structural analysis methods. Using classical structural analysis will enable increased exploration of the design space by reducing the overall run time necessary to evaluate one alternative. The use of physics-based structural optimization using classical structural analysis is tested through experimentation. First the underlying hypotheses are tested in a canonical example by comparing different optimization algorithms ability to locate a global optimum identified through design space exploration. Then the proposed method is compared to a method based on higher fidelity finite element analysis as well as a method based on weight-based empirical data to validate the overall research objective.

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Gorbet, Matthew G. (Matthew Grant) 1975. "Beyond input devices : a new conceptual framework for the design of physical-digital objects." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/29138.

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De, Beer J. W. (Koos). "Analysing alternate reality games based on game design theory to propose a conceptual framework." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/57176.

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The aim of this research is to develop a conceptual framework for alternate reality games based on game design theory. Alternate reality games or ARGs are a unique form of game that enables people to collaboratively play a game that is not a game in the context of the real world. To understand ARGs one needs to understand what differentiates them from other types of games as well as what makes them games. The research investigates existing literature of alternate reality games as well literature in the field of game studies to develop a set of characteristics for alternate reality games based on game design theory. Case studies are done on three different ARGs and summaries for the games are created. The phenomena in the summaries are placed into categories and subcategories. The categories and subcategories are developed by analysing the game summaries using constant comparative analysis. Using the categories, subcategories and the relationship between them, diagrams are created for each of the studied ARGs. A detailed analysis of each game is done and a summary diagram is created for each game. The summary diagrams are then combined to create a generalizable diagram for ARGs. The combination of the theoretical framework developed during the literature study together with the generalizable diagram from the analysis of the three games are then combined to create a conceptual framework. The conceptual framework creates a deeper understanding of ARGs and the various phenomena found within them by building on game design theory found in the field of game studies. The conceptual framework can aid in the creation of ARGs as well as enable the further analysis of these games.
Dissertation (MIS)--University of Pretoria, 2015.
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Ajayi, Modupeola Olajumoke. "Developing a conceptual framework for the field failure feedback process from service-to-design." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/11917.

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This thesis addresses the product field failure feedback process from service-to-design,for the purposes of product enhancement within the heating technology manufacturing industry. The research provides insights into existing problems with processing field failure data as an aid to service, design and quality practitioners in their functional roles to support product performance, quality and reliability improvements. Extant research on field feedback process have examined field feedback as a fragmented process and focused mainly on improving the speed and quality of the information flow within. This study investigates such feedback as a holistic process and concentrates on operationalising and improving the feedback between service and design. Understanding what is pleasing and dissatisfying for customers is critical for success in today's competitive market environment. Thus, this requires a systematic process for obtaining feedback from the field about product-in-use performance to influence the design of future product and service market offerings that will genuinely contribute to increased customer satisfaction. The feedback of product-in-use performance data can be used by design engineers to identify potential product failures and prioritise reliability issues, and so prevent their reoccurrence. Furthermore, product innovation and development processes are increasingly driven by shorter time to market, increasing product complexity, and increasing customer demands, all of which have contributed to the challenges of improving feedback from the service to the design. Such challenges need to be addressed if firms wish to actively pursue sustainable product innovation and develop genuine levels of organizational learning. An in-depth case study was conducted with a sponsoring company and qualitative and qualitative data was collected through interviews, and questionnaire surveys. The results from the literature reviews and empirical work have been amalgamated to develop a conceptual framework for the effective field failure feedback process from service-to-design. The framework articulates the various stages of the feedback process and the operational conditions that privilege its effective management and organisation. This framework was subsequently validated with industrial experts using case study methods, following which refinements were incorporated into its overall design.

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Kellam, Hugh James Dowler. "A Conceptual Framework to Guide the Design, Delivery and Evaluation of Quality Mobile Learning Experiences." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32955.

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Mobile learning has the pedagogical potential to provide informal, context-based educational experiences that can teach practical and applicable workplace skills and behaviors. The goal of this study was to examine the learning experiences and outcomes of healthcare professionals as they participated in a mobile learning activity designed to teach them the technical and procedural skills for facilitating clinical consultations via videoconference. The primary research question was: How does the use of a curriculum framework to design mobile learning experiences impact the learning experiences and outcomes of healthcare professionals with regards to developing workplace skills and understanding clinical processes? Informed by a systematic review of the mobile learning literature, this dissertation proposed a conceptual framework to guide the implementation and evaluation of mobile learning based on five dimensions of instructional design: content, structure, delivery, usability and communities of practice. Physicians, nurses and healthcare administrators voluntarily participated in this pragmatic, mixed methods study. Their quantitative and qualitative feedback was utilized both to assess the validity of the proposed mobile learning experience conceptual framework as well as its quantitative and qualitative evaluation tools. The study found that informal, contextual mobile learning content can promote communication and collaboration among healthcare professionals, and provide them with hands-on learning experiences that can be easily situated in a specific workplace environment. Delivery was identified as perhaps the most critical element in increasing motivation and interactivity among participants, and communities of practice after the learning activity were found to increase collaboration and provide opportunities for problem-solving. The structure of embedding the informal mobile learning experience within a formal, didactic online learning course was also found by participants to provide the right mix of background knowledge and practical application to produce meaningful learning outcomes. Overall, the mobile learning experience conceptual framework synthesizes best practices in the literature and proposes innovative methods for the design and evaluation of effective mobile learning.

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Shams, Maha. "Elevating the perception of the strategic use of design for an airline through the design management conceptual framework (DMCF)." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/12297.

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This dissertation evaluates and elevates the perception of the strategic use of design for airlines, especially a Silent Design airline like Saudia Airlines. Saudia Airlines is an international airline located in the Gulf region in the Middle East. In comparison to some other Gulf state airlines, Saudia Airlines benefits from its large geographical coverage, and is considered to be one of the richest and longest established carriers in the industry. However, the rapid growth during the past few years of other Gulf carriers (e.g. Emirates Airlines, Etihad Airways and Qatar Airways) highlights the necessity for improvements to be made by Saudia Airlines so that it can sustain its position in the global market. These three mega Gulf airlines have shown major developments in their strategic use of design in delivering innovative and differentiated design touch points in their customer journeys. The purpose of this research is to ‘create a design management conceptual framework (DMCF) to assist Saudia Airlines in evaluating and elevating the perception of the strategic value of design.’ To date, airlines adopting a Silent Design approach have rarely been addressed in empirical studies. To achieve this, secondary research investigated several topics, mainly the perception of the strategic use of design, the operational use of design and how design was managed based on design management evolution. Furthermore, design outcomes are presented after implementing the strategic use of design, to deliver innovative and differentiated results. Moreover, the case studies of several companies are presented that use design at a strategic level, especially in the airline industry. The primary research investigated key stakeholders’ views (customers, design experts and Saudia Airlines’ employees and design consultants). The findings from these investigations, and emergent key themes and sub-themes created the prototypes that led to the formulation of the DMCF, which is the main contribution of this study. The DMCF was developed and tested with experts in the field. The proposed framework is considered a significant starting point for airlines that want to evaluate and elevate their perception of the strategic use of design. The DMCF addresses the significant results of this study and key points are made, as follows: 1) Four key dimensions are identified: a) organisational mind-set, b) structure and design capabilities, c) design process and communication, and d) customer experience, which could evaluate and elevate the strategic use of design. 2) The Silent Design culture is identified as pertaining to Saudia Airlines in this study. This culture emphasises the moderate ambition of the strategic use of design by using it at an operational level. It also includes an ill-defined structure for managing design and a lack of design capabilities. In addition, it has an unclear design process and ad hoc cross-departmental collaboration. The overall result is that the Silent Design organisations’ customer experiences are characterised by undifferentiated products and services. 3) The Strategic Design culture is identified and addresses the airlines that make good use of design. This culture emphasises the strong ambition of the strategic use of design by using it at a strategic level. It also includes a systematic and clear structure for managing design. It has a clear design process and clear cross-departmental collaboration. The overall result is that Strategic Design organisations maintain their position as innovators and differentiators within the airline industry. 4) Some recommendations are made that target how to bridge the gap between these two cultures, including appointing a design leader within a Silent Design culture airline. This would elevate the airlines’ perceptions of the strategic use of design.

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Sallati, Carolina, and Klaus Schützer. "The Digitalization Principles from a User- Centered Design Perspective: A Conceptual Framework for Smart Product Development." Thelem Universitätsverlag & Buchhandlung GmbH & Co. KG, 2021. https://tud.qucosa.de/id/qucosa%3A75906.

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The industry relies on interdisciplinarity to promote advancements. The diverse engineering domains, information technologies, management and social sciences are combined in the industrial environment and oriented o society’s ever-changing demands. In parallel, the demographic shifts caused by population aging present room for innovation on many fronts, such as in health, technology, industry, products, and services, and in the same way in product development processes. In an attempt to tackle such issues, this article discusses how the addressing of the elderly population demands, particularly the demand for smart products, might be supported by the principles of production digitalization. In doing so, it proposes a conceptual framework for the development of smart products for the elderly, sustained by three core pillars: specific product lifecycle stages, Industrie 4.0 requirements for smart product development; and Industrie 4.0 enabling technologies which are integrated by the User-Centered Design philosophy. Their combination into a framework aims at addressing two main points: assist in the translation of elderly real consumers’ expectations and demands into more adequate, appealing products and in creating a transition path for companies who wish to incorporate the principles and technologies of production digitalization in their value chain. Furthermore, the article discusses how this proposal could be validated in the real industrial environment.

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Barros, Alexandre Monteiro de. "Framework para representação do conhecimento de projeto de produto aplicando o paradigma da orientação a objetos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/172051.

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O projeto de produtos e sistemas técnicos complexos requer a compreensão em nível de sistemas e subsistemas para formular soluções eficientes e integradas ao seu contexto. Para auxiliar esta compreensão, o conhecimento de projeto deve ser representado utilizando níveis adequados de abstração de acordo com a fase do projeto. A fase de projeto conceitual requer tipos de representação capazes de atingir um alto nível de abstração para a exploração de conceitos que conduzam a soluções criativas. O paradigma da orientação a objetos, que é fundamentado pela abstração, faz parte da engenharia de software, mas também pode ser aplicado para o projeto de artefatos físicos porque permite a representação dos elementos do mundo real através de uma linguagem simples, acessível e com alto nível de abstração. Ademais, o paradigma da orientação a objetos permite a reutilização do conhecimento de projeto devido à sua capacidade de estruturar a informação em um formato adequado para isto. O presente trabalho propõe um framework para representar o conhecimento de projeto de produto aplicando o paradigma da orientação a objeto. Inicialmente, foram identificados os elementos conceituais da tese e suas relações, para na sequência definir o modelo do framework e o seu método de aplicação O framework utiliza uma linguagem de representação diagramática que pode evoluir desde um mapa mental, com elementos diversificados e pouco ordenados, até uma rede estruturada de classes e relacionamentos em um modelo de classes. Um modelo de classes pode concentrar conhecimento sobre o projeto, servindo como uma estrutura geral que conecta e relaciona diferentes blocos de informação associados aos produtos e sistemas que estão sendo elaborados. A verificação da aplicabilidade do framework foi realizada por especialistas da área de design mediante o desenvolvimento de um projeto de produto em nível conceitual e do preenchimento de questionário de avaliação.
The design of complex technical products requires understanding at the system and subsystem level to formulate efficient and integrated solutions to their context. To support this understanding, the project knowledge can be represented using appropriate levels of abstraction according to the project phase. The conceptual design phase requires types of representation that reach a high level of abstraction for the exploration of concepts that lead to creative solutions. The object-oriented paradigm is based on abstraction and is part of software engineering, but can also be applied to the design of physical artifacts because it allows the representation of realworld elements through simple, accessible and in high-level abstraction language. In addition, the object orientation paradigm supports the reusability of project knowledge due to its capacity to structure the information in patterns. The present work proposes a framework to represent product design knowledge using the objectoriented paradigm First, the conceptual elements of the thesis and their relationships were identified, after; the framework model and their method of application were constructed. The framework uses a diagrammatic representation language in which a mental map, with diversified and unordered elements, can progress into a structured network of classes and relationships in a class model. A class model can focus knowledge about the project, serving as a general structure that connects and relates different blocks of information associated with the products and systems being developed. The verification of the applicability of the framework was carried out by specialists in the design area through the development of a product design at conceptual level and the answering an evaluation questionnaire.

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Bahramian, Armin. "Fractal geometry in landscape architecture : the development of a new conceptual framework for urban park design." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531133.

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Coughlan, Tim. "Understanding creative interaction : a conceptual framework for use in the design of interactive systems for creative activities." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519019.

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Kang, Bum-Kyu. "New conceptual framework of cross-functional collaboration for new product design development in global consumer electronics firms." Thesis, Brunel University, 2001. http://bura.brunel.ac.uk/handle/2438/5202.

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I here have been very few studies carried out on enhancing CFC (Cross-functional Collaboration) for the product design development. nevertheless there is a clear consensus among researchers that this issue is a critical one in ne product design development. Besides, almost all of the research work, which attempted to encourage CFC in NPD situations, was carried out focused on the cross-functional team which is the most effective organisation type to encourage collaboration between other functional groups, rather than the functional organisation, which is difficult organisation to facilitate collaboration between other functional groups. On the other hand, there is still no clear evidence which proves that CFC improves the performance of' design development. Nevertheless, this proof is essential premise to support the value of producing the information to improve CFC for product design development. This research attempts to fill in this gap in the deficiency of research. This longitudinal research has been conducted with complementary research methods: a qualitative research and a quantitative research in the field. As the main body of this research, 15 key -decision makers for new product design development were interviewed and 243 questionnaires from eight leading consumer electronics companies in three countries (Korea, Japan. UK) were analysed. In conclusion, firstly, this research has proved there is a plus correlation between the level of CFC and several dimensions of the design development performance of consumer electronics products. Furthermore, a new framework model is developed and proposed after compressing and combining all vital findings of this research work. This developed model presents three major findings of this research. Firstly, the factors affecting CF C for design development of consumer electronics products, secondly, the priority of importance of these factors, and finally, factors directly contributing to design development performance in several dimensions. Overall, the findings of this research help to people what are valuable factors for building CFC climate and what are prior factor in a quandary concerning, where to concentrate their efforts so as to successfully implement their (TV to improve their design development performance. In particular, the findings of this research could further help designers and design managers who lack the experience and knowledge of collaboration situations in the rigid functional organisational boundaries, which many consumer electronics companies face.

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Omiciuolo, Manolo [Verfasser]. "Generic Purpose Modelling and Domain Specific Simulation: a Framework for Conceptual Design of Space Mechanisms / Manolo Omiciuolo." München : Verlag Dr. Hut, 2018. http://d-nb.info/1164293680/34.

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Georgiadou, Maria Christina. "Future-proofed design of low-energy housing developments : conceptual framework and case studies from the UK and Sweden." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648320.

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Akofio, Sowah Margaret Avis Naa Anyeley. "A conceptual framework and approach for enhancing transportation asset management (TAM) implementation for sustained TAM programs." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53936.

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In 2012, federal legislation introduced a requirement for formal transportation asset management (TAM) in transportation agencies. The law specifically requires agencies to develop TAM plans and implement TAM programs in their decision-making processes. The history of national policy development for (TAM) and research in policy implementation and organizational theory have shown that program sustainment is not easily achieved. Often, agencies can respond to this kind of legislative mandate with ineffective efforts to achieve legitimacy that reduce the likelihood for the program to be sustained in the long-term. This presents a challenge because without sustainment, the benefits of TAM, which are mostly long-term, may not be fully realized. The objective of this work was to develop a conceptual framework to guide transportation agencies to review their TAM implementation practices and identify opportunities to enhance long-term program sustainment. The conceptual basis for the framework comes from a synthesis of transportation, policy and program implementation, and change management literature, supported by insight from a panel of practitioner and academic experts. The TAM Implementation Review Framework (TIRF) incorporates seven themes of implementation factors that can promote sustainment of TAM practices impacting the social, organizational, and programmatic elements of implementation. The TIRF was applied in case studies to review the TAM implementation processes of three Departments of Transportation (DOTs) resulting in different kinds of information on how implementation activities address factors related to program sustainment. These results can steer future implementation activities in DOTs towards increased probabilities of achieving long-term program sustainment. The primary contributions of this work lie in the development of the conceptual framework and approach to enhance TAM implementation by emphasizing the people and organizational elements of TAM, alongside with the technical. In practice, the TIRF offers agencies a review and planning tool to support TAM implementation decision making and to promote program sustainment. The output is being proposed as a foundational element in the development of an evidence-based catalog of TAM implementation strategies. This can facilitate inter-agency knowledge sharing by providing a platform for systematic documentation of implementation experiences to support broader adoption of strategies that can contribute to increased program sustainment.

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Bowman, Kelly Eric. "Optimization Constrained CAD Framework with ISO-Performing Design Generator." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2599.pdf.

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Lopez, Flores René. "Collaborative framework in computer aided innovation 2.0 : Application to process system engineering." Thesis, Toulouse, INPT, 2015. http://www.theses.fr/2015INPT0087/document.

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L'innovation est un processus complexe qui demande des techniques et des outils collaboratifs pour la gestion des connaissances et la communication, afin que les entreprises surmontent les défis d'une économie concurrentielle. Une nouvelle catégorie d’outils connus sous l’acronyme CAI (Computer Aided Innovation) émerge parmi l’éventail des technologies assistées par ordinateur afin de répondre aux demandes industrielles pour une plus grande fiabilité des nouveaux produits et procédés. L’objectif de ces outils (en cours de développement) est d’aider les concepteurs durant tout le processus d’innovation. Actuellement la mise en oeuvre d’un tel outil doit prendre en considération deux développements récents majeurs. Le premier est d’ordre technologique avec les possibilités offertes par le Web 2.0 dans le développement de logiciel. Le deuxième est plus stratégique avec un changement de vision de l’innovation passant de l’innovation fermée (interne à l’entreprise) à l’innovation ouverte (Open Innovation). Ces deux aspects conduisent à de nouvelles formes de CAI nommé Open CAI 2.0. Cette recherche propose une des briques d’un tel outil, pour assister les ingénieurs procédés à résoudre des problèmes innovants principalement dans la phase de conception préliminaire. Nous présentons la structure et la fonctionnalité d’un cadre de collaboration qui met en oeuvre une méthode développée basée sur le couplage entre la théorie TRIZ, et une technique de gestion des connaissances: le raisonnement à partir de cas (RàPC). Ce cadre est une extension du modèle TRIZ-RàPC validé dans le domaine du génie de procèdes. L’approche du processus de résolution est illustrée sur une étude de cas traitant de la gazéification de la biomasse
In economy nowadays, the act of innovation is in general social; it requires the management of knowledge, and the techniques and methodologies to drive it. Innovation is not the product of one isolated intelligence, instead, it is the result of a multi-disciplinary workgroup lead by a process or a methodology. The conceptual design, which is found in the first stages of the innovation process, represents one of the most important challenges in industry nowadays. One of the main challenges faced by chemical industries related to the conceptual design phase is to provide the means in the form of methods and computational tools, for solving problems systematically, at the same time that benefiting from the collective efforts of individual intelligences involved. Hence, the main objective of this work is to provide a solution to improve the creative capacity of a team involved in the innovation process, in particular the preliminary (critical) phase of conceptual design. Consequently, it is important to understand the techniques, methods and tools that best support the generation of novel ideas and creative solutions. In addition, it is necessary to study the contribution of information and communication technologies as the mean to support collaboration. Web technologies are considered as complementary tools to implement methods and techniques in collaborative design, and particularly in the conceptual design stage. These technologies allow setting up distributed collaborative environments to bring together the resources and the experts who can relate the existing pieces of knowledge to new contexts. It is the synergy created in this kind of environment, which allow producing valuable concepts and ideas in the form of Collective Intelligence. Nevertheless in most existing solutions for collective intelligence or crowdsourcing environments, they do not report the use of a particular methodology to improve the participants' creativity. The solution in this work describes a social network service that enables users to cooperatively solve problems oriented (but not limited) to the phase of conceptual design. In this work we propose that the use of Collective Intelligence in combination with the model TRIZ-CBR could lead the creative efforts in a team to develop innovative solutions. With this work we are looking for connecting experts from one particular field, TRIZ practitioners and stakeholders with the objective to solve problems in collaboration unlashing the collective intelligence to improve creativity. This work uses the basis of the concept named "Open CAI 2.0" to propose a solution in the form of a theoretical framework. The contributions seek to move the development of the field in Computer Aided Innovation a step forward

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Xie, Mingquan [Verfasser], Alexei [Akademischer Betreuer] Lapkin, and Hannsjörg [Gutachter] Freund. "A framework for the conceptual design of optimal chemical reactors / Mingquan Xie ; Gutachter: Hannsjörg Freund ; Betreuer: Alexei Lapkin." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2020. http://d-nb.info/1217065253/34.

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Eubanks, Charles Frederick. "A Framework for computer-based failure modes and effects analysis of mechanical systems in the conceptual design phase /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu148794150429435.

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Radanliev, Petar. "A conceptual framework for supply : supply chain systems architecture and integration design based on practice and theory in the North Wales slate mining industry." Thesis, University of South Wales, 2014. https://pure.southwales.ac.uk/en/studentthesis/a-conceptual-framework-for-supply(1f84ee4b-b348-426b-94ed-2259bc1c716c).html.

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The aim of this thesis is to contribute to knowledge in the form of a new theory for supply chain strategy formulation. The objective is to design evaluation criteria, specific to the context of greenfield project architecture and integration design. This study addressed the aim and objective by synthesising existing methods and techniques which are outlined into a research framework of supply chain strategy problems. The study applied the case study and action research methods to pursue conceptual validity from the process of investigating the supply chain strategy formulation in a specific situation and presented the data collection and analysis process. The thesis derived a conceptual framework for investigating and identifying the relationship between multiple elements, dimensions, forces and factors that influence and affect supply chain strategy formulation in a greenfield project context, specific to the mining industry. The contribution to knowledge emerged from building upon the architecture of the conceptual framework, through synthesising existing techniques and adapting these techniques, to extend and redefine the existing knowledge on the practice of supply chain strategy formulation. Through critical analysis, a number of critical problems emerged and the process of addressing these problems, resulted with a new framework for evaluating the relationship between business and supply chain strategy, specific to greenfield project and integration context. The contribution to knowledge also derived from addressing the emerging obstacles in the process of identifying, defining and formulating, the visions and goals of individual supply chain participants from implicit into an explicit form. The process synthesised the knowledge for conceptualising the idea, through developing and evaluating information and issues, to derive insights into the complex and abstract concept, of greenfield project business and supply chain strategy formulation. The conceptual framework and evaluation framework advanced into designing greenfield project supply chain integration strategy. The process involved categorising individual supply chain strategic interests, decisions and problems into formulation areas, and was aimed at defining the process of greenfield project integration strategy as a system of concepts containing formulation areas, formulation principles, segregated into subcategories of formulation imperatives and formulation concepts. The thesis contributed to knowledge with advancement of the design engineering method, which enables visualisation of the supply chain strategy evaluation process. The design is not personalised for individual company business strategy or supply chain strategy formulation. The method was personalised to evaluate the integration of individual goals, and concepts in a supply chain strategy formulation. The novelty that emerged from the thesis was a conceptual framework for greenfield project architecture and integration design. The greenfield project architecture and design derived in the thesis a proposed conceptual system for applying the conceptual framework and the evaluation criteria.

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Meckstroth, Christopher. "Incorporation of Physics-Based Controllability Analysis in Aircraft Multi-Fidelity MADO Framework." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1575557306181006.

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Lorenzon, Ana Rita Müller. "Framework conceitual para aplicação no desenvolvimento de objetos de aprendizagem : infográficos interativos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/98131.

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Com a emergência da aprendizagem eletrônica são observadas novas possibilidades para a aplicação de infográficos interativos como uma forma de apoiar a transposição didática de conteúdos no ensino fundamental. O acesso progressivo às tecnologias de informação, comunicação e expressão contribuem para uma visão mais aprofundada sobre a dinâmica existente entre as tecnologias digitais, o Design Instrucional, o Design da Informação e Design de Interação na criação de objetos de aprendizagem. Refletir sobre as diferentes formas de transpor os conhecimentos e explorar o uso de infográficos interativos pode contribuir para o desenvolvimento de materiais didáticos dinâmicos que favoreçam a análise interpretativa dos conteúdos expostos, a tomada de decisão e o entendimento do mundo pela criança. Através da revisão bibliográfica e documental, e da análise de 27 (vinte e sete) objetos de aprendizagem selecionados no Banco Internacional de Objetos Educacionais, a pesquisa procura identificar os elementos essenciais de tais áreas, que venham a contribuir para a concepção e o desenvolvimento de objetos digitais, em relação aos aspectos gráficovisuais, interativos e motivacionais que estimulam a exploração dos conteúdos. Busca-se, através da criação de um framework conceitual, estruturar e relacionar os aspectos relevantes das áreas do Design Instrucional, do Design da Informação e do Design de Interação a fim de confluir tais conceitos de maneira sistemática, de forma a facilitar o planejamento de materiais instrucionais, a transposição didática e o diálogo entre os profissionais envolvidos nestes processos. Por intermédio dos trabalhos apresentados nessa pesquisa, observa-se o potencial do Design da Informação em criar maneiras interativas e eficazes de disponibilizar informações de modo a inspirar professores a explorar e relacionar dados de maneira simples e inteligente para informar e educar.
The advances in digital technology have changed the way people communicate and interact with information. The access to these technologies of information, communication and expression, contribute to a further insight into the dynamics between digital technologies, Instructional Design, Information Design and Interaction Design to support the design process of learning objects. In this sense, exploring different ways to implement the didatic transposition trhough interactive infographics, could contribute to the development of instrunctional materials and enhance children's interpretative analysis of the contents, the decision making and understanding of the world. With this aim, the research seeks to identify the essential elements of these fields, to assist the design and the development of digital learning objects with regards to the graphic elements, interactive and motivational aspects that can improve the exploration of the contents by the users. Through the literature review and the analysis of 27 (twenty seven) learning objects selected from the virtual repository Banco Internacional de Objetos Educacionais, the research seeks to identify the essential elements of such areas. Particularly, with regards to the graphics, interactive and motivational aspects that may which imporve the design process of learning objects and enhance the exploration of the instrunctional contents by the users. Furthermore, by providing a structure which integrates and relates the important elements of the areas of Instructional Design, Information Design and Interaction Design the study developed a Conceptual Framework to optimize and facilitate the planning of instructional materials, the didactic transposition and the dialogue between the professionals involved in these processes. As a result, Information Design can stimulate new forms of interaction and expression, and create interactive and effective ways to provide information in order to inspire teachers to explore and relate data in a simple and smart way to inform and educate.

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Koegst, Thilo [Verfasser], Peter [Akademischer Betreuer] Krebs, Jens [Akademischer Betreuer] Tränckner, and Ingmar [Akademischer Betreuer] Nopens. "Ontology based model framework for conceptual design of treatment flow sheets / Thilo Koegst. Gutachter: Peter Krebs ; Jens Tränckner ; Ingmar Nopens." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://d-nb.info/106844620X/34.

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Manewa, R. M. A. S. "Economic considerations for adaptability in buildings." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/9457.

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The existing buildings in the UK are not designed to be functionally adaptive to fit a spectrum of purposes. Alternatively, scrapping these buildings and building anew does not appear to be an economically viable and environmentally sustainable solution either. Proactive solutions to respond to future potential changes of use are rare in previous and current building designs, which ultimately make these buildings functionally redundant. At present, curiosity about adaptable buildings is spreading among owners, developers and policy makers; however, no detailed investigation has been undertaken to identify the economic costs and benefits of adaptability in new buildings. Thus, the present endeavour was designed to bridge this gap. The research exploited both case studies and survey designs to explore the answers to the above problem. Two case studies were undertaken to establish that building changes occur over time, as well as to assess their economic implications in the current built environment at both macro and micro levels. Three web-based surveys (WBS) were designed and circulated among quantity surveyors and architects of the 100 leading consultancy practices in the UK to identify both the design and economic aspects of adaptability in buildings. The total numbers of respondents to WBS1, WBS2 and WBS3 were 13, 32 and 42, respectively. In addition, data was collected from semi-structured interviews with two policy makers, two structural engineers, a quantity surveyor and a facilities manager. Unstructured interviews with a senior planner, a project manager, two architects and a services engineer were used to clarify the issues of design and planning for adaptability in buildings. The findings were interwoven to develop a conceptual framework to identify the economic considerations for adaptability in new buildings. Two workshops were undertaken with the industry partners for the Adaptable Futures research project to verify the results obtained from the case studies and to test the usability of the developed conceptual framework. The group members had multi-disciplinary backgrounds of architecture, quantity surveying and structural engineering, allowing a robust grounding for verification. The results contribute to the body of knowledge in two ways. Firstly, the developed conceptual framework identifies the economic considerations (costs and benefits) for change of use in buildings within the wider context of adaptability over the lifecycle aspects. This will assist owners/clients and developers in their economic decisions for designing new buildings for potential adaptations. Secondly, the research findings strengthen the reliability of the existing body of knowledge whilst confirming the urgent need for designing new buildings towards potential adaptations. In addition, the findings strongly emphasise plan depth and floor to ceiling height as the most influential design parameters for building change of use, the details of which are not highlighted in the previous literature.

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Santos, Paulo César dos. "Um framework conceitual para planejamento de ensino em cursos de computação: uma abordagem direcionada às características do aprendiz." Pontifícia Universidade Católica de São Paulo, 2016. https://tede2.pucsp.br/handle/handle/18210.

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Made available in DSpace on 2016-04-29T14:23:43Z (GMT). No. of bitstreams: 1 Paulo Cesar dos Santos.pdf: 7657229 bytes, checksum: 2789e5a7baf7005913b0595cfff5666d (MD5) Previous issue date: 2016-03-07
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Nowadays, the computer science academic field is facing several challenges due to its importance and its insertion in different science fields and also, due to the rapid breakthrough of digital technologies in information and communication. There is a growing demand for places to study and graduate in computer science. Therefore a great effort is needed to improve the quality of educational process adopted by the academic institutions. The aim of this research is to analyze the planning procedures employed by the computer science course of a public school and to propose a new way of teaching, which will certainly reach better results in the teaching and learning process. In order to achieve this, we brought up a conceptual framework (CF) to support the didactic planning process of all the subjects related to the computer science course. In this research it was applied a qualitative approach, enforced nature, in an exploratory purpose. The procedures adopted were based in an experimental research. Fifteen teachers and fifty one students, from that public school, participated in the study. As a result the findings showed the behaving profile of the students, their capacity of learning and their multiple intelligence skills. There is also an analysis of the present scenario taking into consideration the different ways of planning and conducting classes. Based on data from that research it was pointed out the need of improvements in the last two aspects. However, it was prepared the framework of the CF proposed and it was given an example of its use and, finally, experiments using it were carried out by the professors. As positive results came out, the possibility of including the CF as part of class plan in that public school is real
Atualmente, na área acadêmica em computação, enfrentam-se vários desafios, dada sua importância, sua inserção nas demais áreas de conhecimento e os avanços das tecnologias digitais da informação e comunicação. É crescente a demanda por novas vagas nas graduações em ciência da computação. Por isso, faz-se necessário investir esforços para obtenção de melhorias na qualidade dos processos de ensino, adotados nas instituições acadêmicas. Esta pesquisa teve como objetivo analisar o processo de planejamento de ensino no curso de computação de uma instituição pública e propor novas práticas que ofereçam possíveis melhorias no processo de ensino-aprendizagem. Para tal, propôs-se um Framework Conceitual (FC), para apoiar o processo de planejamento de ensino em disciplinas do referido curso. Para a pesquisa foi utilizada uma abordagem qualitativa, de natureza aplicada, com objetivo exploratório. Os procedimentos adotados foram de uma pesquisa experimental. Participaram quinze professores e cinquenta e um alunos da referida instituição. Como resultados apresentam-se: os perfis de temperamentos, os estilos de aprendizagem, as inteligências múltiplas dos alunos e ainda uma análise do cenário atual das formas de planejamento e regência das aulas. A partir dos dados obtidos na pesquisa, foram apontadas necessidades de melhorias nesses dois últimos aspectos. Contudo, elaborou-se a estrutura do FC proposto, demonstrou-se um exemplo de aplicação e, finalmente, foram realizados experimentos com sua aplicação pelos professores. As conclusões apontam para resultados positivos e possibilidades de uso do FC no processo de planejamento de ensino da instituição pesquisada

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Van, Schalkwyk Phillipus Johannes. "A conceptual framework and considerations for mergers and acquisitions in the information technology arena / P.J. van Schalkwyk." Thesis, North-West University, 2007. http://hdl.handle.net/10394/2038.

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Zambrano, Chaguendo Alfonso Claret. "The history of heat and temperature and its relationship to the design of a teaching sequence and to a student conceptual framework." Thesis, University College London (University of London), 1993. http://discovery.ucl.ac.uk/10020207/.

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Al-Ghanem, Ghanem S. D. "Reforming science education in Saudi Arabia a conceptual framework for the design of coordinated and thematic science (CATS) module for grades 7-9 /." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=958.

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Thesis (Ed. D.)--West Virginia University, 1999.
Title from document title page. Document formatted into pages; contains viii, 307 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 209-232).

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Levy, Philippa Catherine Morton. "'Living' theory in networked learning : a conceptual framework for the design and facilitation of professional development for networked learner support in higher education." Thesis, University of Sheffield, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414664.

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Eklund, Adam, and Jesper Karner. "Development of a Framework for Concept Selection and Design Automation : Utilizing hybrid modeling for indirect parametric control of subdivision surfaces." Thesis, Linköpings universitet, Maskinkonstruktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-147755.

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Saab Aeronautics’ section Overall Design and Survivability develops early aircraft concepts and utilizes Computer Aided Design (CAD) to ensure the feasibility of principal- and critical characteristics. Saab has over the years developed several start models of aircrafts in CAD from pre-defined aircraft configurations, which are to some extent non-generic. When new configurations are to be explored, manual- and repetitive work is required if the new configuration cannot be attained solely through parametric modifications of a start model. The complexity of these CAD models also demands great knowledge of how aircraft components interact with each other to ensure compatibility. The project covered in this thesis was thus carried out to develop a more effective way for Saab to create and explore a larger design space. This by creating a framework that consists of a product configurator coupled with a library of generic CAD models. The product configurator that was created is the Saab Tradespace Analyzer & Reconfigurator (STAR), which takes compatibility relationships into consideration to facilitate concept selection. The STAR also provides a dynamic design space calculation to indicate how close the user is to a final concept selection. Two generic CAD models were created, a fuselage model and an air inlet model. A skeleton model was also created in order to reduce model dependencies and to control the main geometry of the aircraft product. In addition to these, an already existing wing model was implemented to form the library of generic CAD models. The framework coupling the STAR with the CAD library utilizes design automation to allow automatic CAD model generation of a concept that has been selected within the STAR. It was concluded through extrapolation that the created framework would allow Saab to create and explore a larger design space in a more effective way than what is done today, provided the library of CAD models were to contain the same number of components as today’s start models.

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Matté, Lia Cláudia. "Conjunto de procedimentos de engenharia reversa para projeto de banco de dados espaciais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2002. http://hdl.handle.net/10183/10544.

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Projetos de SIG (Sistemas de Informação Geográfica), em geral, ainda não apresentam modelo conceitual de banco de dados geográficos. Os implementadores de SIG se preocupam com a aquisição dos dados (captura e adaptação), que é a etapa mais cara, e dão, ainda, pouca atenção à modelagem. A utilização de modelos conceituais faz com que os usuários controlem melhor sua base de dados e tirem maior proveito do SIG. O objetivo deste trabalho é definir um conjunto de procedimentos de engenharia reversa de bancos de dados espaciais que auxiliem na criação e manutenção de modelos conceituais para aplicações de SIG a partir de dados já existentes. Estes procedimentos podem contribuir para um aumento na qualidade dos SIG implementados, auxiliando na popularização da prática de modelagem conceitual de banco de dados geográficos. São estudados três formatos de transferência utilizados por usuários de SIG. A partir daí, é proposto uma arquitetura de sistema de engenharia reversa para SIG.
Even with the increasing use of Geographic Information Systems (GIS), conceptual modeling of geographic databases (GDB) is not yet usual among GIS professionals. This fact can in part be explained by the professional profile of most GIS designers. They usually are more familiar with specific GIS applications than with database technology. Among them, one can find cartographers, geographers, agricultural engineers, and architects. Besides that, the cost of geographic data acquisition is so high that much important is given to acquisition plans during GIS design and less interest is given to the database design process. Especially first time designers do not perceive the importance of a database schema that is independent of a specific GIS product. Conceptual design preserves the independence between data types and the logical schema of the product. Moreover, relying on the GDB conceptual schema users can better understand what part of the geographic reality is represented in the database. The main goal of this research work is to define a set of reverse engineering procedures for spatial databases that can support either creation or evolution if conceptual GDB schemas. It is expected that these procedures can enhance the quality of GDB design as well as contribute to the popularization of GDB conceptual modeling. Three different geographic data input formats to GIS are investigated and a reverse engineering system architecture for them is proposed. Resulting conceptual (sub)schemas are based on the framework GeoFrame.

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Malinowski, Gajda Elzbieta. "Designing conventional, spatial, and temporal data warehouses: concepts and methodological framework." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210837.

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Decision support systems are interactive, computer-based information systems that provide data and analysis tools in order to better assist managers on different levels of organization in the process of decision making. Data warehouses (DWs) have been developed and deployed as an integral part of decision support systems.

A data warehouse is a database that allows to store high volume of historical data required for analytical purposes. This data is extracted from operational databases, transformed into a coherent whole, and loaded into a DW during the extraction-transformation-loading (ETL) process.

DW data can be dynamically manipulated using on-line analytical processing (OLAP) systems. DW and OLAP systems rely on a multidimensional model that includes measures, dimensions, and hierarchies. Measures are usually numeric additive values that are used for quantitative evaluation of different aspects about organization. Dimensions provide different analysis perspectives while hierarchies allow to analyze measures on different levels of detail.

Nevertheless, currently, designers as well as users find difficult to specify multidimensional elements required for analysis. One reason for that is the lack of conceptual models for DW and OLAP system design, which would allow to express data requirements on an abstract level without considering implementation details. Another problem is that many kinds of complex hierarchies arising in real-world situations are not addressed by current DW and OLAP systems.

In order to help designers to build conceptual models for decision-support systems and to help users in better understanding the data to be analyzed, in this thesis we propose the MultiDimER model - a conceptual model used for representing multidimensional data for DW and OLAP applications. Our model is mainly based on the existing ER constructs, for example, entity types, attributes, relationship types with their usual semantics, allowing to represent the common concepts of dimensions, hierarchies, and measures. It also includes a conceptual classification of different kinds of hierarchies existing in real-world situations and proposes graphical notations for them.

On the other hand, currently users of DW and OLAP systems demand also the inclusion of spatial data, visualization of which allows to reveal patterns that are difficult to discover otherwise. The advantage of using spatial data in the analysis process is widely recognized since it allows to reveal patterns that are difficult to discover otherwise.

However, although DWs typically include a spatial or a location dimension, this dimension is usually represented in an alphanumeric format. Furthermore, there is still a lack of a systematic study that analyze the inclusion as well as the management of hierarchies and measures that are represented using spatial data.

With the aim of satisfying the growing requirements of decision-making users, we extend the MultiDimER model by allowing to include spatial data in the different elements composing the multidimensional model. The novelty of our contribution lays in the fact that a multidimensional model is seldom used for representing spatial data. To succeed with our proposal, we applied the research achievements in the field of spatial databases to the specific features of a multidimensional model. The spatial extension of a multidimensional model raises several issues, to which we refer in this thesis, such as the influence of different topological relationships between spatial objects forming a hierarchy on the procedures required for measure aggregations, aggregations of spatial measures, the inclusion of spatial measures without the presence of spatial dimensions, among others.

Moreover, one of the important characteristics of multidimensional models is the presence of a time dimension for keeping track of changes in measures. However, this dimension cannot be used to model changes in other dimensions.

Therefore, usual multidimensional models are not symmetric in the way of representing changes for measures and dimensions. Further, there is still a lack of analysis indicating which concepts already developed for providing temporal support in conventional databases can be applied and be useful for different elements composing a multidimensional model.

In order to handle in a similar manner temporal changes to all elements of a multidimensional model, we introduce a temporal extension for the MultiDimER model. This extension is based on the research in the area of temporal databases, which have been successfully used for modeling time-varying information for several decades. We propose the inclusion of different temporal types, such as valid and transaction time, which are obtained from source systems, in addition to the DW loading time generated in DWs. We use this temporal support for a conceptual representation of time-varying dimensions, hierarchies, and measures. We also refer to specific constraints that should be imposed on time-varying hierarchies and to the problem of handling multiple time granularities between source systems and DWs.

Furthermore, the design of DWs is not an easy task. It requires to consider all phases from the requirements specification to the final implementation including the ETL process. It should also take into account that the inclusion of different data items in a DW depends on both, users' needs and data availability in source systems. However, currently, designers must rely on their experience due to the lack of a methodological framework that considers above-mentioned aspects.

In order to assist developers during the DW design process, we propose a methodology for the design of conventional, spatial, and temporal DWs. We refer to different phases, such as requirements specification, conceptual, logical, and physical modeling. We include three different methods for requirements specification depending on whether users, operational data sources, or both are the driving force in the process of requirement gathering. We show how each method leads to the creation of a conceptual multidimensional model. We also present logical and physical design phases that refer to DW structures and the ETL process.

To ensure the correctness of the proposed conceptual models, i.e. with conventional data, with the spatial data, and with time-varying data, we formally define them providing their syntax and semantics. With the aim of assessing the usability of our conceptual model including representation of different kinds of hierarchies as well as spatial and temporal support, we present real-world examples. Pursuing the goal that the proposed conceptual solutions can be implemented, we include their logical representations using relational and object-relational databases.

Doctorat en sciences appliquées
info:eu-repo/semantics/nonPublished

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Dissertations / Theses on the topic 'Design Conceptual Framework'

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