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

Dependency-based collaborative design: a comparison of modeling methods

Drabble, Brian 2015 March 1919 (has links)
No / The ability to provide support to a group of designers, analysts and other users who are collaborating on an evolving design requires the dual capabilities of managing options for an individual designer while at the same time managing the dependencies between different sets of designer's options. For example, if designer A is creating a design for a helicopters hydraulics system and this is dependent on electrical power (EP) from a sub-system from designer B then how can the workflows, decisions and options of the two designers be managed so that each can understand the implications of their own design decisions and more importantly the implications and design decisions they force on others? The proposed CAPS system employs two dependency reasoning engines: one handles quantitative values and other qualitative ones. The quantitative engine can identify that a motor with an output of 3000 rpm allows a generator to output 100 V or that a hydraulic pump is dependent on the 240v output of the motor. Alternatively, the qualitative engine could rule out several motors options if the overall design state that the weight of a helicopter's transmission needs to be comparable to that of the engine or the positioning of a sensor makes it susceptible to an EM process that could affect its function. A mapping capability is provided allowing analysis to be passed between the two engines. Three different types of dependency-based quantitative engine designs have been developed and evaluated. The first quantitative engine design focuses on modeling components at their output level and propagating level values from component to component, component to sub-system, etc. The second quantitative engine design focuses on modeling components at the node level so as to identify key components, sub-systems, etc. in terms of their overall dependency to the design. The third engine employs a hybrid of the previous two approaches and was identified through feedback from designers. These engines are designed to be complimentary with the node-based and hybrid approaches being used to identify the key capabilities and dependencies of the design. The output-based approach is then used to explore in greater detail the outputs and dependencies of the components and sub-systems identified as key via the node/hybrid-based approach. The proposed CAPS architecture has been initially evaluated against a large collaborative design task involving the design of a helicopter's electrical, hydraulic, structural and mechanical systems.
2

Transformação digital na indústria: indústria 4.0 e a rede de água inteligente no Brasil. / Digital transformation in the industry: industry 4.0 and the smart network water on Brasil.

Azevedo, Marcelo Teixeira de 10 March 2017 (has links)
Atualmente vive-se uma transformação digital na indústria, que está sendo referenciada como uma nova revolução e conhecida como a quarta revolução industrial. Essa nova revolução foi precedida por três anteriores, sendo que a primeira foi baseada no carvão como fonte de energia, impulsionando, assim, as máquinas a vapor e transformando o trabalho artesanal em automatizado; posteriormente, houve a segunda revolução industrial, baseada em conceitos de eletricidade para atingir a produção em massa; já a terceira revolução industrial baseou-se em sistemas eletrônicos e computacionais, tendo como o seu maior expoente os sistemas Supervisory Control and Data Aquisition (SCADA), que foram utilizados para aprimoramento e eficiência da linha de produção. Hoje, vive-se no limiar da quarta revolução industrial, que se apoia fortemente nas tecnologias habilitadoras, tais como: Internet of Things (IoT), machine learning, big data analytics, cyber-physical systems (CPS), machine-to-machine (M2M) e cloud computing. Essas tecnologias, trabalhando cooperativamente, são utilizadas para promover a transformação digital descrita nas visões ao redor do mundo, entre as quais se destacam: Industry 4.0, Industrial Internet Consortium e Manufatura Avançada. A presente pesquisa visa caracterizar as tecnologias habilitadoras, as visões da transformação digital e o cenário Brasil para esta nova realidade. O objetivo central é a definição de uma plataforma de transformação digital aplicada ao cenário da indústria de Utilities. Para a identificação do setor industrial, optou-se pela aplicação de um questionário direcionado às indústrias da região metropolitana de Campinas. Esse questionário serviu para traçar o nível de conhecimento, aderência e perfil profissional desejado pelas empresas relacionadas com a transformação digital. Na análise do questionário para o grupo estudado, verificou-se desconhecimento estratégico sobre a transformação digital e resistência para aplicação dos novos conceitos na cadeia de suprimentos existente. Para suprir esta necessidade e como prova de conceito foi proposta uma plataforma para transformação digital para a questão da água, com o objetivo de alcançar uma gestão eficiente dos recursos atrelada ao uso racional da água. Para a definição da plataforma foi realizado o levantamento de todo o processo de uma planta de tratamento de água, implantada nos moldes da terceira revolução industrial, de modo a melhorar o processo aplicando-se os conceitos da transformação digital na nova plataforma definida. Como resultado, o estudo de caso contribuiu para o projeto PURA-USP juntamente com o projeto SafeCity, do convênio Huawei-USP no âmbito do conceito de cidades inteligentes, integrando a transformação digital na gestão eficiente dos recursos hídricos no campus USP da capital. Adicionalmente, inseriu-se a capacitação técnica também no projeto Huawei-USP, denominada Centro de Internet do Futuro, habilitando e capacitando os profissionais para as novas tecnologias. / Nowadays, there´s a digital transformation in the industry, which is being referred to as a new revolution, known as the fourth industrial revolution. This new revolution was preceded by three previous ones, the first one was based on coal as a way of source energy, boosting the steam engines and turning the manual labor into automated; posteriorly the second industrial revolution was based on electricity concepts to achieve mass production; and the third industrial revolution, which was based on electronics and computer systems, having as its greatest exponent the systems Supervisory Control and Data Acquisition (SCADA) and programmable logic controllers (PLC), which were used for improvement and production line efficiency. Today we are on the bound of the fourth industrial revolution, which strongly supports itself at enabling technologies, such as: Internet of Things (IoT), big data analytics, cyber-physical systems (CPS), machine-to-machine (M2M) and cloud computing. These technologies are working cooperatively used to promote digital transformation described in the sights around the world, between them are: Industry 4.0, Industrial Internet Consortium and Advanced Manufacturing. This research aims to characterize the enabling technologies, the visions of the digital transformation and Brazil scenario for this new reality. The main objective is the definition of a digital transformation platform applied in the industry scenario. To identify the industry it was chosen the application of a questionnaire targeting the industries at the metropolitan region of Campinas. This questionnaire was used to trace the level of knowledge, adherence and professional profile required of companies related to digital transformation. In the questionnaire analysis for the group in the scope there was strategic unfamiliarity about the digital transformation and resistance to application of new concepts in the existing supply chain. To meet this need and as a proof of concept, a platform for digital transformation for the water issue was proposed with the objective of achieve an efficient management of resources linked to the rational use of water. For the platform definition was performed a survey of the whole process of a water treatment plant that was implemented along the lines of the third industrial revolution and improved the process by applying the concepts of digital transformation in the new set platform. The case study aimed to contribute to the PURA-USP project, integrating the digital transformation in the efficient management of water resources on campus USP capital. Additionally, technical training was also included in the Huawei-USP project, denominated the Future Internet Center, enabling and training professionals for new technologies.
3

Mobile Consultancy Work : Social Interaction through Enabling Technologies

Ceesay, Lamin, Zawadzka, Evelina January 2012 (has links)
The shift toward mobility have today created higher demands on companies, consultants, the right use of working methods, workplace strategies, the information sharing as well as the interaction and collaboration with different customers. If consultants are able to work effective outside the office, from everywhere and at any time regardless of location with the help of mobile technologies, companies can reduce unnecessary costs, gain market share and competitive advantages. This study examines how mobile technologies enable social interaction of IT consultants‟ mobile work. The purpose of this Master thesis is to identify IT consultants‟ mobile work and the existing implications in mobility today. The thesis will also bring up the set of problems with mobility to the surface and create a deeper understanding of IT consultants‟ mobile work and more knowledge about mobile technologies and how they can enable social interaction. The thesis‟ empirical foundation is derived from 18 interviews with representatives from; NaviPro, Sogeti and Logica. The interviews will provide the reader with a better understanding in; how mobile technologies can enable social interaction and which implications consultants face during their mobile work. The theoretical basis is composed from secondary data to receive an understanding and background to the problem area. The empirical data is then analyzed by means of presented theories which are also assumed in the preparation of the interviews. We have come to the conclusion that today‟s technology has failed to satisfy the consultants‟ social needs and that there are significant implications that can result in lack of face-to-face interaction, social and professional isolation and higher demands of constantly be reachable. However, with the access of laptops, smartphones and mobile broadband consultants can minimize following implications and perform more than 50% of their work and still be a productive and effective consultant. / Program: Masterutbildning i Informatik
4

Apparel E-Commerce and Fitting Enabling Technologies

Hirt, Katharina January 2012 (has links)
Given that not even 10% of clothing is sold online, apparel e-commerce faces major challenges as opposed to traditional apparel shopping or e-commerce of digital goods. Due to the constantly increasing online business, it is essential to optimize the online apparel purchase process, for it to become more competitive. Perceived product risk and return rates– for apparel– are exceptionally high. Fitting and size uncertainty is the key reason to both purchase hesitance as well as number of returns. In this study it is investigated whether fitting enabling technologies (FETs) can benefit apparel e-commerce by making the purchase process more efficient and solving the aforementioned complications. Focus here is put onto three main fitting technologies: Fits.Me, UPcload and Virtusize. In order to serve the study purpose, subjects of research included the classification of apparel goods, the theory of perceived risk as well as technology acceptance. The measures of the technological acceptance model (TAM) were used to examine and evaluate the applications. These were ‘skills’, ‘perceived ease of use’, ‘perceived enjoyment’, ‘perceived usefulness’ and ‘post-purchase evaluation’. The method was based on a deductive approach, first examining theory and then confirming results practically. A general online observation of diverse (fitting) enabling technologies paired with extensive literature research of accompanying topics, lead to the selection of three case technologies, which could be tested and evaluated based on the components of the literature review. Closing the gap between retailer and consumer in order to create purchase process efficiency could be achieved. Purchase hesitance due to the inability of physical examination of intangible apparel goods could be minimized through the integration of FETs. The measures of the TAM were tested overall positively in regard to the technologies in the e-tail context. The online apparel purchase process had been aligned with the conventional buying procedure and consequently generated the same benefits, allowing apparel e-commerce to finally achieve competitive advantage, to potentially substitute traditional apparel shopping and to eventually build upon a consistent and coherent international size infrastructure. / Program: Master programme in Applied Textile Management
5

Transformação digital na indústria: indústria 4.0 e a rede de água inteligente no Brasil. / Digital transformation in the industry: industry 4.0 and the smart network water on Brasil.

Marcelo Teixeira de Azevedo 10 March 2017 (has links)
Atualmente vive-se uma transformação digital na indústria, que está sendo referenciada como uma nova revolução e conhecida como a quarta revolução industrial. Essa nova revolução foi precedida por três anteriores, sendo que a primeira foi baseada no carvão como fonte de energia, impulsionando, assim, as máquinas a vapor e transformando o trabalho artesanal em automatizado; posteriormente, houve a segunda revolução industrial, baseada em conceitos de eletricidade para atingir a produção em massa; já a terceira revolução industrial baseou-se em sistemas eletrônicos e computacionais, tendo como o seu maior expoente os sistemas Supervisory Control and Data Aquisition (SCADA), que foram utilizados para aprimoramento e eficiência da linha de produção. Hoje, vive-se no limiar da quarta revolução industrial, que se apoia fortemente nas tecnologias habilitadoras, tais como: Internet of Things (IoT), machine learning, big data analytics, cyber-physical systems (CPS), machine-to-machine (M2M) e cloud computing. Essas tecnologias, trabalhando cooperativamente, são utilizadas para promover a transformação digital descrita nas visões ao redor do mundo, entre as quais se destacam: Industry 4.0, Industrial Internet Consortium e Manufatura Avançada. A presente pesquisa visa caracterizar as tecnologias habilitadoras, as visões da transformação digital e o cenário Brasil para esta nova realidade. O objetivo central é a definição de uma plataforma de transformação digital aplicada ao cenário da indústria de Utilities. Para a identificação do setor industrial, optou-se pela aplicação de um questionário direcionado às indústrias da região metropolitana de Campinas. Esse questionário serviu para traçar o nível de conhecimento, aderência e perfil profissional desejado pelas empresas relacionadas com a transformação digital. Na análise do questionário para o grupo estudado, verificou-se desconhecimento estratégico sobre a transformação digital e resistência para aplicação dos novos conceitos na cadeia de suprimentos existente. Para suprir esta necessidade e como prova de conceito foi proposta uma plataforma para transformação digital para a questão da água, com o objetivo de alcançar uma gestão eficiente dos recursos atrelada ao uso racional da água. Para a definição da plataforma foi realizado o levantamento de todo o processo de uma planta de tratamento de água, implantada nos moldes da terceira revolução industrial, de modo a melhorar o processo aplicando-se os conceitos da transformação digital na nova plataforma definida. Como resultado, o estudo de caso contribuiu para o projeto PURA-USP juntamente com o projeto SafeCity, do convênio Huawei-USP no âmbito do conceito de cidades inteligentes, integrando a transformação digital na gestão eficiente dos recursos hídricos no campus USP da capital. Adicionalmente, inseriu-se a capacitação técnica também no projeto Huawei-USP, denominada Centro de Internet do Futuro, habilitando e capacitando os profissionais para as novas tecnologias. / Nowadays, there´s a digital transformation in the industry, which is being referred to as a new revolution, known as the fourth industrial revolution. This new revolution was preceded by three previous ones, the first one was based on coal as a way of source energy, boosting the steam engines and turning the manual labor into automated; posteriorly the second industrial revolution was based on electricity concepts to achieve mass production; and the third industrial revolution, which was based on electronics and computer systems, having as its greatest exponent the systems Supervisory Control and Data Acquisition (SCADA) and programmable logic controllers (PLC), which were used for improvement and production line efficiency. Today we are on the bound of the fourth industrial revolution, which strongly supports itself at enabling technologies, such as: Internet of Things (IoT), big data analytics, cyber-physical systems (CPS), machine-to-machine (M2M) and cloud computing. These technologies are working cooperatively used to promote digital transformation described in the sights around the world, between them are: Industry 4.0, Industrial Internet Consortium and Advanced Manufacturing. This research aims to characterize the enabling technologies, the visions of the digital transformation and Brazil scenario for this new reality. The main objective is the definition of a digital transformation platform applied in the industry scenario. To identify the industry it was chosen the application of a questionnaire targeting the industries at the metropolitan region of Campinas. This questionnaire was used to trace the level of knowledge, adherence and professional profile required of companies related to digital transformation. In the questionnaire analysis for the group in the scope there was strategic unfamiliarity about the digital transformation and resistance to application of new concepts in the existing supply chain. To meet this need and as a proof of concept, a platform for digital transformation for the water issue was proposed with the objective of achieve an efficient management of resources linked to the rational use of water. For the platform definition was performed a survey of the whole process of a water treatment plant that was implemented along the lines of the third industrial revolution and improved the process by applying the concepts of digital transformation in the new set platform. The case study aimed to contribute to the PURA-USP project, integrating the digital transformation in the efficient management of water resources on campus USP capital. Additionally, technical training was also included in the Huawei-USP project, denominated the Future Internet Center, enabling and training professionals for new technologies.
6

6G wireless communication systems: applications, opportunities and challenges

Anoh, K., See, C.H., Dama, Y., Abd-Alhameed, Raed, Keates, S. 26 December 2022 (has links)
Yes / As the technical specifications of the 5th Generation (5G) wireless communication standard are being wrapped up, there are growing efforts amongst researchers, industrialists, and standardisation bodies on the enabling technologies of a 6G standard or the so-called Beyond 5G (B5G) one. Although the 5G standard has presented several benefits, there are still some limitations within it. Such limitations have motivated the setting up of study groups to determine suitable technologies that should operate in the year 2030 and beyond, i.e., after 5G. Consequently, this Special Issue of Future Internet concerning what possibilities lie ahead for a 6G wireless network includes four high-quality research papers (three of which are review papers with over 412 referred sources and one regular research). This editorial piece summarises the major contributions of the articles and the Special Issue, outlining future directions for new research.
7

Model hodnocení přínosu moderních technologií ve vztahu k udržitelnosti podniku / The evaluation model of the benefit of modern technologies in relation to corporate sustainability

Dušková, Monika January 2019 (has links)
The thesis is focused at the measurement of the benefit of modern technologies in relation to sustainable development for companies that are implementing the so-called Key Enabling Technologies, into their production processes. The multidisciplinarity of these technologies and their huge impact on societal and environmental challenges of the current society are the reason, why the companies implementing these technologies have to be assessed differently, more comprehensively. It is also proven within the detailed literature review. The aim of the thesis is to develop evaluation model of the benefit of modern technologies in manufacturing companies that reflects the aspects of the sustainable development. For this purpose, the relevant performance indicators have to be developed. The various statistical methods are applied, especially the structural equation modelling, in order to achieve the goal of the thesis. Finally, the pilot testing of the optimized model is realized on the specific company.
8

Factors affecting digital transformation in manufacturing companies

Eluekezi Nnewuku, Rosa, Tuncay, Hatice January 2021 (has links)
The adoption of digital transformation can be seen as the companies opportunity for increased competitiveness. The possibilities of digital transformation are many as it allows, among other things, a connection between workers and machines or between machines. However, companies are facing difficulties to implement digital transformation effectively. Implementing digital transformation is a slow process for companies and most companies are in the early stages of it. Also, the technologies that are associated with digital transformation are still unclear. Companies still lack a systematic approach to implementing digital transformation. Understanding critical factors that affect digital transformation in manufacturing companies could help to develop a systematic approach for implementing digital transformation. Therefore, in this research the authors have carefully reviewed and identified factors that affect digital transformation within the manufacturing industry. This thesis research aims to identify the factors that will lead to the success of digital transformation in manufacturing companies and to also find out the factors that when being ignored will lead to unsuccessfulness. The research has been guided by three research questions: 1) Which factors are stated in the literature that is affecting the implementation of digital transformation in manufacturing companies, 2) How are these factors related to each other in the literature, and 3) How can practitioners and academics use factors for the successful implementation of digital transformation? In this research, a systematic literature review (SLR) has been carried out which has led to identifying 11 key factors. Based on the identified factors, a model has been developed to support the implementation of digital transformation in manufacturing companies. The model consists of four different categories of factors, namely, “Awareness related factors, Readiness related factors, Technology, Selection, and Integration related factors (so-called ARTO-model. Furthermore, a survey has been developed to get experts´ perspectives on the identified factors and the model.  Based on the input from the survey, a final compiled ARTO model is proposed as a guiding tool for the successful implementation of digital transformation. Further, a model to show the relationship between the factors is created. Keywords: Digital transformation, Digitalization, Industry 4.0, Enabling technologies, Key factors, Critical factors, Manufacturing industry, Guiding framework / Implementeringen av digital transformation kan ses som företags möjlighet till ökad konkurrenskraft. Möjligheterna med digital transformation är många, då det bland annat tillåter uppkoppling mellan arbetare och maskiner. Dock, står företagen inför svårigheter med implementeringen av det. Implementeringen av digital transformation är en långsam process för företagen och många företag befinner sig i tidigt skede. Även teknologier som associeras med digital transformation är fortfarande oklara och det saknas kunskap gällande detta. Dessutom finns det inte mycket handlingskraft när det kommer till faktorer som påverkar digital transformation. Företag saknar fortfarande tillvägagångssätt för implementering av digital transformation. Därför har författarna till den här undersökningen noga granskat och identifierat faktorer som påverkar digital transformation inom tillverkande företag.  Syftet med den här undersökningen är att ta reda på faktorer som ska leda till framgång av digital transformation i tillverkande företag, och vidare ta reda på faktorer som när de ignoreras kommer leda till misslyckande. Forskningsfråga 1: Vilka är faktorerna som nämns i litteraturen och som påverkar digital transformation i tillverkande företag?  Forskningsfråga 2: Hur är dessa faktorer relaterade till varandra inom litteraturen?  Forskningsfråga 3: Hur kan praktiker och akademiker använda faktorer för ett framgångsrikt genomförande av digital transformation? I den här undersökningen har det gjorts en systematisk litteraturstudie som ledde till utvecklingen av ett ramverk. Vidare skapades en enkät för att få experters perspektiv på den systematiska litteraturstudien och ramverket.  Det skapades en modell som bygger på fyra olika kategorier ”Awareness related factors, Readiness related factors, Technology, Selection and integration related factors (så kallad ARTO-modell) utifrån den systematiska litteraturstudien och därefter gjordes en liknande modell baserad på inputen från enkäten. Slutligen sammanställdes resultaten i en gemensam ARTO- modell och en modell för att visa relationen mellan de olika modellerna skapades  Nyckelord: Digital Transformation, Digitalisering, Industri 4.0, Möjliggörande teknik, Nyckel faktorer, Kritiska faktorer, Tillverkande företag, Vägledande ram

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