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Sampaio, José Nuno. "Light Design : Outdoor Urban Public Places : - Urban Lighting: Design and Technologies -." Doctoral thesis, KTH, Skolan för teknik och hälsa (STH), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-206502.
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Most of the present time outdoor lighting investments seem to be focused on road and automotive traffic facilities or oriented toward safety, security and efficiency. We can identify this in many of the world cities, as a globally spread common practice, where lighting is still highly perceived as a pure matter of quantities’ distribution. Considering the tendency for the Human being to become an Urban-being, the future of human quality of life will, most probably, depend on the fortune of so called sustainable cities. By lighting design, and promoting the return of the city lights to the Human scale, is argued that the Urban Planning approach may not correspond best to the person viewpoint, due to scale. Will be explored, this way, by positioning the perspective at human eye level and not zenith bird-view, the traditional perspective over the city, where from not a soul ever experiences urbanity. The method definition will be based mostly on observations and analysis of the Light and Lighting transitions taking place in cities, experienced by its inhabitants, from daytime to night time.QC 20170505
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Vasylyev, Andriy. "Integrated RF power amplifier design in silicon based technologies." [S.l.] : [s.n.], 2006. http://se6.kobv.de:8000/btu/volltexte/2006/20.
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Bahtiri, Blerand. "UX and Service Design for Zbee Based Corporate Carsharing." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-147251.
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What transportation means corporations choose for satisfying their mobility needs may have an essential impact on the environment. Choosing environmental friendly, alternatives such as battery driven light electric vehicles, would mean drastically contributing to a more sustainable environment. Meanwhile as carsharing solutions, continuously rise in popularity together with other sharing economy business models so do their possibilities to satisfy the mobility needs for corporations either by them implementing their own carsharing service or by investing on external services offered by established carsharing operators. This thesis has investigated and designed for a Zbee based corporate carsharing service, to be used between the affiliates of Vinngroup in Gothenburg. A Zbee is a light electric three-wheeled vehicle. Based on user-centred service design methods, methods suggested for sharing economy solutions, as well as user experience design methods, this thesis identified that users have different individualistic needs in a workplace and prior experiences that affects how they will use the service.In order to satisfy these different needs, it was found, the system needs to provide real-time vehicle and scheduling information for ensuring the users vehicle availability and service reliability, being one of the first requirement from the users. Further the service should provide users with functions that help users through the different use phases that were identified during this work. The findings found were then presented visually by designing mobile application prototypes and testing them on participants iteratively. The final set of prototypes was further evaluated by using the System Usability Scale, an effective and popular tool for measuring the usability of products and services. This evaluation gave the scores 77.5, 92.5, 90, 87.5 and 72.5, thus this giving a mean-value of 84 and a median of 87.5. All these scores suggests the prototype has high usability.
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Briffa, Vincent. "Through the screen : re-examining screen culture in the light of new imaging technologies." Thesis, University of Central Lancashire, 2009. http://clok.uclan.ac.uk/21146/.
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Li, Jin. "Applying web-based VR technologies to support design and manufacturing." Thesis, University of Wolverhampton, 2004. http://hdl.handle.net/2436/133049.
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Sabbaghian, Nader 1969. "Product development process capture & display using web-based technologies." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80590.
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Gaillardon, Pierre-Emmanuel. "Reconfigurable Logic Architectures based on Disruptive Technologies." Phd thesis, Ecole Centrale de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00674438.
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For the last four decades, the semiconductor industry has experienced an exponential growth. According to the ITRS, as we advance into the era of nanotechnology, the traditional CMOS electronics is reaching its physical and economical limits. The main objective of this thesis is to explore novel design opportunities for reconfigurable architectures given by the emerging technologies. On the one hand, the thesis will focus on the traditional FPGA architecture scheme, and survey some structural improvements brought by disruptive technologies. While the memories and routing structures occupy the major part of the FPGAs total area and mainly limit the performances, 3-D integration appears as a good candidate to embed all this circuitry into the metal layers. Configuration and routing circuits based on back-end compatible resistive memories, a monolithic 3-D process flow and a prospective vertical FETs process flow are introduced and assessed within a complete architectural context. On the other hand, the thesis will present some novel architectural schemes for ultra-fine grain computing. The size of the logic elements can be reduced thanks to inherent properties of the technologies, such as the crossbar organization or the controllable polarity of carbon electronics. Considering the granularity of the logic elements, specific fixed and incomplete interconnection topologies are required to prevent the large overhead of a configurable interconnection pattern. To evaluate the potentiality of this new architectural scheme, a specific benchmarking flow will be presented in order to explore the ultra-fine grain architectural design space.
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Asmady, Adipratnia. "Risk-based Approach to Assessment of Advanced Technologies for Conceptual Design." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1660.
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The conceptual design phase of an aerospace system development program is typically characterized by short duration and relatively limited resources, yet design decisions are made that have critical implications on program risk. To address the more aggressive requirements, one of these decisions is the selection of advanced technologies. System developers need to assess advanced technologies early on, but are faced with uncertainties surrounding the potential net benefits. The concept introduced in this study is uncertainty characterization as a way to better understand the associated risk. A framework was developed to guide the interaction between the technology developer and the system developer. The objective is to gain a more comprehensive landscape of the technology options by explicitly considering the effects of uncertainty in the decision making process. This can ultimately facilitate prioritization and resource management during conceptual design. An example case of advanced wing technology was applied to the design of a high-altitude long-endurance unmanned aerial vehicle to demonstrate the implementation of the framework.
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DeRoest, Gary Eugene. "How People With Multiple Sclerosis Experience Web-Based Instructional Technologies." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7375.
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People with the autoimmune disease multiple sclerosis (MS) have few options for
educational activities. Although web-based instruction may be a viable option, little is known about how people with MS perceive this form of learning. The purpose of this qualitative study was to understand the experiences of people with MS regarding web- based instruction. The 3 learning structures--differentiated instruction, collaborative learning, and assistive technology--provided the conceptual framework for this research. Nine volunteers from the Pacific Northwest area of the United States who have MS were individually interviewed for this basic qualitative study. Transcripts were analyzed using open, axial, and selective coding. The results indicated that all participants found personal and professional benefits of their experience with web-based instruction and used course management systems to successfully communicate with instructors or peers. Participants also noted that these management systems did not directly aggravate their MS disease symptoms. Findings from the study may be useful information to individuals with MS for effectively managing their educational choices. This study's results could also be used by learning institutions to improve the access to education and allow individuals with MS to more fully participate in training opportunities.
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Darschewski, James M. "Design and implementation of a web-based lead management system using Oracle and ColdFusion technologies." [Denver, Colo.] : Regis University, 2006. http://165.236.235.140/lib/JDarschewskiPartI2006.pdf.
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Superti, Pantoja Luiza. "Play-based design: participatory design method for developing technologies with 3 and 4 year-old children." Diss., University of Iowa, 2019. https://ir.uiowa.edu/etd/7033.
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Young children in the United States are widely using technology at ages 3 and 4, but to date there are no well documented participatory design methods for including this age group in the development of technologies. A few attempts at using methods designed for older children were unsuccessful. To address this gap in methods, this research developed Play-based Design, a novel participatory design method inspired by make-believe play in the style of Tools of the Mind, an evidence-based preschool curriculum.
Play-based Design first sets the context for play and design through stories. It then enables children to plan play by selecting roles and contribute their ideas as they act and speak during make-believe play activities in which they interact with other children, voice agents, adult facilitators, and generic props. This research includes four sets of design sessions with 3-4 year old children. The first provided the design of StoryCarnival a web-based app to set up Tools of the Mind style play. The second set of design sessions led my research team through the development of voice agents to support Tools of the Mind style play as it happens. These two sets of sessions provided inspiration and insight for using StoryCarnival combined with voice agents to support design activities for technologies with physical and social components. The last two sets of sessions gave me an opportunity to understand whether Play-based Design could be applied to obtain design requirements from children for technology unrelated to make-believe play by focusing on obtaining ideas for Internet-of-Things applications in the home.
The research presented in this dissertation required an interdisciplinary journey through child development theories, storytelling for children, graphic design, qualitative methods, software development, and related approaches from the literature. Participant observations, group discussions, and video analysis were used to collect and analyze data. Results from the last two sets of design sessions focused on obtaining ideas for Internet-of-Things technologies to provide evidence that Play-based Design can enable 3-4 year old children to contribute their ideas to the design of technologies. More specifically, in this dissertation, I provide supporting evidence for my thesis statement: “When applied to participatory design sessions with young children, Play-based Design can: (1) allow young children to express their ideas through make-believe play, which is a developmentally appropriate activity; (2) enable children to act out design ideas or verbally express them by conversing with researchers or voice agents; (3) support fluid communication between adult researchers and children; and (4) inform the design of technologies that facilitate activities that have social and physical components (e.g. tangible user interfaces, voice agents, IoT).”
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Ramquist, Henrik. "Technologies and design methods for a highly integrated AIS transponder." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2006.
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The principle of universal shipborne automatic identification system (AIS) is to allow automatic exchange of shipboard information between one vessel and another. Saab TransponderTech AB has an operating AIS transponder on the market and the purpose of this report is to investigate alternative technologies that could result in a highly integrated replacement for the existing hardware.
Design aspects of a system-on-chip are discussed, such as: available system-on- chip technologies, intellectual property, on-chip bus structures and development tools. This information is applied to the existing hardware and the integration possibilities of the various parts of the AIS transponder is investigated.
The focus will be on two main transponder parts that are possible to replace with highly integrated circuits. The first of these parts is the so-called digital part where system-on-chip platforms for different technologies have been investigated with a special interest in a highly integrated FPGA implementation. The second part is the radio frequency receivers where alternatives to the existing superheterodyne receiver are discussed.
The conclusion drawn is that there exist technologies for developing a highly integrated AIS transponder. An attractive highly integrated transponder could consist of a FPGA system-on-chip platform with subsampling digital receivers and additional components that are unsuitable for integration.
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Mule, Anthony Victor. "Volume grating coupler-based optical interconnect technologies for polylithic gigascale integrat." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/9447.
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Yang, Danying. "The design of mood changing clothing based on fibre optics and photovoltaic technologies." Thesis, Heriot-Watt University, 2012. http://hdl.handle.net/10399/2523.
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Levisse, Alexandre. "3D high density memory based on emering resistive technologies : circuit and architecture design." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0584.
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Alors que les mémoires non-volatiles conventionnelles, telles que les mémoires flash à grille flottante, deviennent de plus en plus complexes à intégrer et souffrent de performances et d’une fiabilité de plus en plus réduite, les mémoires à variation de résistance (RRAM) telles que les OxRAM, CBRAM, MRAM ou PCM sont vues dans la communauté scientifique comme une alternative crédible. Cependant, les architectures de RRAM standard (telles que la 1Transistor-1RRAM) ne sont pas compétitives avec les mémoires flash sur le terrain de la densité. Ainsi, cette thèse se propose d’explorer le potentiel des architectures RRAM sans transistor que sont l’architecture Crosspoint et l’architecture VRRAM.Dans un premier temps, le positionnement des architectures Crosspoint et VRRAM dans la hiérarchie mémoire est étudié. De nouvelles problématiques, telles que les courant de sneakpath, la chute de tension dans les métaux ou la surface des circuits périphériques sont identifiées et modélisées. Dans un second temps, des solutions circuit répondant aux problématiques évoquées précédemment sont proposées. Finalement, cette thèse se propose d’explorer les opportunités ouvertes par l’utilisation de transistors innovants pour améliorer la densité ou les performances des architectures mémoires utilisant des RRAMWhile conventional non-volatiles memories, such as floating gate Flash memories, are becoming more and more difficult and costly to integrate and suffer of reduced performances and reliability, emerging resistive switching memories (RRAM), such as OxRAM, CBRAM, MRAM or PCM, are seen in the scientific community as a good way for tomorrow’s high-density memories. However, standard RRAM architectures (such as 1 Transistor-1 RRAM) are not competitive with flash technology in terms of density. Thereby, this thesis proposes to explore the opportunities opened by transistor-less RRAM architectures: Crosspoint and Vertical RRAM (VRRAM) architectures.First, the positioning of Crosspoint and VRRAM architectures in the memory hierarchy is studied. New constraints such as the sneakpath currents, the voltage drop through the metal lines or the periphery area overhead are identified and modeled. In a second time, circuit solutions answering to previously mentioned effects are proposed. Finally, this thesis proposes to explore new opportunities opened by the use of innovative transistors to improve the density or the performances of RRAM-based memory architectures
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Neagu, Razvan. "Architectural experience and motion : a design tool based on simulation and immersing technologies." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/69308.
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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1993.Includes bibliographical references (p. 97-104).
Visualization is an important aspect of architectural design. This field has evolved and influenced continuously the design medium and process. Architecture implies experience of space and experience relies on motion. Presently, the visualization process offers minimal experiential feed-back as it lacks immersive and proprioceptive output. Recent technological leaps necessitate a re-evaluation of the architectural visualization process. Advancements in flight simulation and virtual reality applications can be implemented in new tools for architects. This thesis defines the parameters of a 3D, immersive design tool. The proposed tool provides feed-back beyond photo-realism, tapping into the experiential qualities of the designed spaces. The parameters of the proposed tool extend the boundaries of architectural visualization into experientialization. These alternatives investigate the use in architecture of digital 3D environments and space/time continuum. Modeling, manipulation, and navigation are analyzed and concrete original implementations are shown. A new method, similar to a 3D parallel ruler, is demonstrated to overcome constraints in representation , imposed by two-dimensional displays. Immersion and engagement are necessary for the simulation of a compelling architectural experience. An analysis of stimuli and determination of necessary levels of input is performed. For this, it is important to understand perception and environmental properties. In this thesis, a phenomenological approach to architectural experience analysis is employed. The practical application of the proposed tool is critical. Specific hardware and software analysis is performed to assure the feasibility of implementing such a tool.
by Razvan Neagu.
M.Arch.
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Morad, Ayman Ahmed. "Geometric-based reasoning system for project planning utilizing AI and CAD technologies." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-06062008-172127/.
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Ge, Feng. "Software Radio-Based Decentralized Dynamic Spectrum Access Networks: A Prototype Design and Enabling Technologies." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/29981.
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Dynamic spectrum access (DSA) wireless networks focus on using RF spectrum more efficiently and dynamically. Significant progress has been made during the past few years. For example, many measurements of current spectrum utilization are available. Theoretical analyses and computational simulations of DSA networks also abound. In sharp contrast, few network systems, particularly those with a decentralized structure, have been built even at a small scale to investigate the performance, behavior, and dynamics of DSA networks under different scenarios. This dissertation provides the theory, design, and implementation of a software radio-based decentralized DSA network prototype, and its enabling technologies: software radio, signal detection and classification, and distributed cooperative spectrum sensing.
By moving physical layer functions into the software domain, software radio offers an unprecedented level of flexibility in radio development and operation, which can facilitate research and development of cognitive radio (CR) and DSA networks. However, state-of-the-art software radio systems still have serious performance limitations. Therefore, a performance study of software radio is needed before applying it in any development. This dissertation investigates three practical issues governing software radio performance that are critical in DSA network development: RF front end nonlinearity, dynamic computing resource allocation, and execution latency. It provides detailed explanations and quantitative results on SDR performance.
Signal detection is the most popular method used in DSA networks to guarantee non-interference to primary users. Quickly and accurately detecting signals under all possible conditions is challenging. The cyclostationary feature detection method is attractive for detecting primary users because of its ability to distinguish between modulated signals, interference, and noise at a low signal-to-noise ratio (SNR). However, a key issue of cyclostationary signal analysis is the high computational cost. To tackle this challenge, parallel computing is applied to develop a cyclostationary feature based signal detection method. This dissertation presents the methodâ s performance on multiple signal types in noisy and multi-path fading environments.
Distributed cooperative spectrum sensing is widely endorsed to monitor the radio environment so as to guarantee non-interference to incumbent users even at a low SNR and under hostile conditions like shadowing, fading, interference, and multi-path. However, such networks impose strict performance requirements on data latency and reliability. Delayed or faulty data may cause secondary users to interfere with incumbent users because secondary users could not be informed quickly or reliably. To support such network performance, this dissertation presents a set of data process and management schemes in both sensors and data fusion nodes. Further, a distributed cooperative sensor network is built from multiple sensors; together, the network compiles a coherent semantic radio environment map for DSA networks to exploit available frequencies opportunistically.
Finally, this dissertation presents the complete design of a decentralized and asynchronous DSA network across the PHY layer, MAC layer, network layer, and application layer. A ten-node prototype is built based on software radio technologies, signal detection and classification methods, distributed cooperative spectrum sensing systems, dynamic wireless protocols, and a multi-channel allocation algorithm. Systematic experiments are carried out to identify several performance determining factors for decentralized DSA networks.Ph. D.
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Alhaj, Ali Khaled. "New design approaches for flexible architectures and in-memory computing based on memristor technologies." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2020. http://www.theses.fr/2020IMTA0197.
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Le développement récent de nouvelles technologies de mémoires non-volatiles basées sur le concept de memristor a suscité de nombreux efforts pour explorer leur utilisation potentielle dans différents domaines d'application. Les propriétés uniques de ces dispositifs memristifs et leur compatibilité pour uneintégration avec les technologies CMOS conventionnelles permettent de nouveaux paradigmes de conception d’architecture, offrant des niveaux sans précédent de densité, de reconfigurabilité et d’efficacité énergétique. Dans ce contexte, le but de ce travail de thèse était d'explorer et d'introduire de nouvelles approches de conception basées sur les memristors pour combiner flexibilité et efficacité en proposant des architectures originales qui dépassent les limites des architectures existantes. Cette exploration et cette étude ont été menées à trois niveaux : interconnexion, traitement et mémoire. Au niveau des interconnexions, nous avons étudié l'utilisation de dispositifs memristifs pour permettre une grande flexibilité basée sur des réseaux d'interconnexion programmables. Cela a permis de proposer la première architecture de transformée de Fourier rapide reconfigurable basée sur des memristors, nommée mrFFT. Les memristors sont insérés comme des commutateurs reconfigurables au niveau des interconnexions afin d'établir un routage flexible puce. Au niveau du traitement, nous avons exploré l'utilisation de dispositifs memristifs et leur intégration avec les technologies CMOS pour la conception de fonctions logique combinatoire. Ces circuits hybrides memristor-CMOS exploitent la forte densité d'intégration des memristors afin d'améliorer les performances des implémentations numériques, et en particulier des unités arithmétiques et logiques. Au niveau mémoire, une nouvelle approche de calcul en mémoire a été introduite. Dans ce contexte, un nouveau style de conception logique a été proposé, nommé Memristor Overwrite Logic (MOL), associé à une architecture originale de mémoire de calcul. L’approche proposée permet de combiner efficacement le stockage et le traitement afin de contourner les problèmes liés aux accès mémoire et d'améliorer ainsi l'efficacité de calcul. L'approche proposée a été appliquée dans trois études de cas à des fins de validation et d'évaluation des performancesThe recent development of new non-volatile memory technologies based on the memristor concept has triggered many research efforts to explore their potential usage in different application domains. The distinctive features of memristive devices and their suitability for CMOS integration are expected to lead for novel architecture design paradigms enabling unprecedented levels of energy efficiency, density, and reconfigurability. In this context, the goal of this thesis work was to explore and introduce new memristor based designs that combine flexibility and efficiency through the proposal of original architectures that break the limits of the existing ones. This exploration and study have been conducted at three levels: interconnect, processing, and memory levels. At interconnect level, we have explored the use of memristive devices to allow high degree of flexibility based on programmable interconnects. This allows to propose the first memristor-based reconfigurable fast Fourier transform architecture, namely mrFFT. Memristors are inserted as reconfigurable switches at the level of interconnects in order to establish flexible on-chip routing. At processing level, we have explored the use of memristive devices and their integration with CMOS technologies for combinational logic design. Such hybrid memristor-CMOS designs exploit the high integration density of memristors in order to improve the performance of digital designs, and particularly arithmetic logic units. At memory level, we have explored new in-memory computing approaches and proposed a novel logic design style, namely Memristor Overwrite Logic (MOL), associated with an original MOL-based computational memory. The proposed approach allows efficient combination of storage and processing in order to bypass the memory wall problem and thus to improve the computational efficiency. The proposed approach has been applied in three real application case studies for the sake of validation and performance evaluation
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Sjödal, Julian, and Alexandra Johansson. "Design and development of a Web-based Mentor matching system." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37392.
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Wenngren, Johan. "Team based innovation : early problem setting activities in engineering design." Licentiate thesis, Luleå tekniska universitet, Innovation och Design, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26015.
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Manufacturing firms’ attention to innovations and the innovation process has during the last decade gained in intensity of interest. One trigger for such an interest is that these companies have extended their business models towards an integrated product-service approach, where the introduction of a service perspective in early development challenges the traditionally temporary formative nature of processes. This new business model of Product-Service Systems (PSS) puts an emphasis on delivering added value to the customer: instead of providing goods the manufacturing firm should provide a service based solution. This does not mean that they stop producing physical goods, but rather that more service aspects should be considered by the engineering team in the planning and design of the goods. When the ownership of the physical goods stays within the firm it is through a challenge and an opportunity to provide “what the user wants” and, at the same time, what is beneficial for the firm. Hence, an innovative and dynamic organisation is desirable. Typically, in product development the team consists of engineers that are domain experts, but novices when it comes to understanding services and often in interpreting customer information. For a firm to create product-service solutions that meet customer needs, innovation and creativity within the early development processes are important (thus the aspects that have gained an increased interest among manufacturing firms). Product development is commonly viewed as an innovative process, though the degree of innovation is usually low (i.e. incremental improvements of the goods). The integration of services into early development could be perceived as radically challenging such an innovation process. The purpose in this thesis is to improve the understanding of development teams working with PSS innovation. This is done in order to facilitate discussion of the challenges for a firm to shift into a product-service process. The empirical data in this study comes from a business-to-business company in the aeronautical industry, but also from student innovation projects. The focus for the study is how teams collaborate in early phases of innovation projects. The qualitative data was generated by performing both observations and interviews. The results indicate not only the importance of heterogeneous teams in the innovation process but also the lack of a sufficient approach for innovative PSS development. Because of this, new tools and methods are vital, but this is not to ignore how traditional tools and methods can be reused and retro-fitted into such a process. Further, the results indicate that personal motivation has an impact on how teams perform innovation activities. This could have the implication that, for example, a goal-oriented engineer surrounded by similarly motivated teammates could more likely fail in interpreting customer information because none of them is likely to assign importance to that information. Therefore, to support engineers to provide product-service solutions not only methods and tools, but also training for how to perform and reflect on user needs could be necessary. KeywordsProduct-Service Systems, Team Based Innovation, Radical Innovation, User oriented design, Engineering designGodkänd; 2010; 20101117 (johwen); ICENTIATSEMINARIUM Ämnesområde: Funktionella produkter/Functional Product Development Examinator: Professor Tobias Larsson, Luleå tekniska universitet Diskutant: Assistant Professor Anna Öhrwall Rönnbäck, Linköpings universitet Tid: Måndag den 20 december 2010 kl 10.00 Plats: E631 Studion, Luleå tekniska universitet
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Amara, Sofiane. "Novel and ancient technologies for heating and cooling buildings." Doctoral thesis, Luleå tekniska universitet, Arkitektur och vatten, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16977.
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The basic issue of this thesis concerns one of the fundamental problems of the future of our society: How to meet the energy requirements for a large and growing world population while preserving our environment? This question is important for the world and the answers are complex and interwoven.Conventional energy sources, fossil and fissile, are polluting in the present and in the future: they erode the environment and their resources are limited. Renewable energy (hydro, wind, solar, geothermal) constitutes a minimum of pollution in the different energy systems. The technologies for using renewable energy are well known though further development and progress are made. This development also requires behavioural change, adaptation, and above all political will. The transition from an economy based on fossil energy to an economy based on renewable energy appears necessary for the protection of the environment. The cost of renewable energy is often represented as an obstacle but remains competitive in the long run.The development and availability of renewable energy, which varies because of its spatial and temporal distribution, require an adaptation of lifestyle, habits, habitat design (passive bioclimatic houses), urban planning and transportation.The focus of this thesis was to apply renewable energy in an area with hot summers and cold winter, a climate like that in the northwest of Algeria. In order to provide improved comfort in the buildings and also economic development in this area, the energy demand for heating and cooling was analyzed in the ancient city of Tlemcen. To supply domestic hot water and space heating, water must be simultaneously available at two different temperature levels. Cold water temperature, close to that of the atmosphere, and hot water between 50 and 60°C. An interesting feature of the preparation of hot water is the small variation of requirements during the year, unlike that to heating. The preparation of hot water is one of the preferred applications of solar energy in the building for several reasons. For this reason an experimental study of the thermal behaviour of a domestic hot water storage tank was undertaken. The phenomena that affect the thermal behaviour of tank especially the coupling between the solar collector and storage tank was studied. This study included concentrating solar collector in which optical fibers were used to transport the energy to the storage tank. Another technology was introduced and developed for the heating and cooling of buildings in the desert involving an existing ancient irrigation system called Fouggara. The novel idea is to use the Fouggara as an air conditioner by pumping ambient air through this underground system. Then air at a temperature of about 21°C would be supplied to the building for heating in the winter and cooling in the summer. This study shows the feasibility of using this ancient irrigation system of Fouggara and contributes to reducing and eliminating the energy demand for heating and cooling buildings in the Sahara desert.Godkänd; 2011; 20110920 (sofama)
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Kim, Jihwan. "High performance radio-frequency and millimeter-wave front-end integrated circuits design in silicon-based technologies." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44704.
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Design techniques and procedures to improve performances of radio-frequency and millimeter-wave front-end integrated circuits were developed. Power amplifiers for high data-rate wireless communication applications were designed using CMOS technology employing a novel device resizing and concurrent power-combining technique to implement a multi-mode operation. Comprehensive analysis on the efficiency degradation effect of multi-input-single-output combining transformers with idle input terminals was performed. The proposed discrete resizing and power-combining technique effectively enhanced the efficiency of a linear CMOS power amplifier at back-off power levels. In addition, a novel power-combining transformer that is suitable to generate multi-watt-level output power was proposed and implemented. Employing the proposed power-combining transformer, a high-power linear CMOS power amplifier was designed. Furthermore, receiver building blocks such as a low-noise amplifier, a down-conversion mixer, and a passive balun were implemented using SiGe technology for W-band applications.
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Mukhopadhyay, Rajarshi. "Broadband and Low-Power Signal Generation Techniques for Multi-Band Reconfigurable Radios in Silicon-based Technologies." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14097.
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Wireless communication is witnessing tremendous growth with the proliferation of various standards covering wide, local, and personal area networks, which operate at different frequency bands. Future wireless terminals will not only need to support multiple standards, but also need to be multi-functional to keep pace with the demands of the consumers. For such an implementation, the local oscillator (LO) turns out to be the bottleneck, which must exhibit frequency agility by generating a very wide range of carrier frequencies in order to access all the specified communication standards.
This dissertation presents various design techniques to realize compact low-cost low-power and broadband oscillators in silicon-based technologies. The two most suitable techniques for broadband signal generation: (1) Use of widely tunable active inductor, and (2) Use of switched resonator have been thoroughly evaluated. A fully reconfigurable active inductor with a widely tunable feedback resistor has been proposed. Using the proposed tunable active inductor in a VCO generates frequency tuning ranges higher than 100%, and helps achieve the highest PFTN Figure-of-Merit among Si-based active inductor VCOs reported in literature till date. The large-signal non-linearity of the active inductor has been utilized to develop the first reported broadband harmonic active inductor-based VCO. The degradation of phase noise due to active inductors is partially solved by a noise optimization guideline for active inductors. Utilizing the low saturation voltage of HBT technologies and high-Q short line inductors seems to be very useful to reduce power consumption of cross-coupled VCOs while achieving low phase noise performance simultaneously.
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Dridi, Mohamed Amine. "Platform-based 5G service design and orchestration." Electronic Thesis or Diss., Institut polytechnique de Paris, 2021. http://www.theses.fr/2021IPPAS002.
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A partir de la cinquième génération, les réseaux mobiles devront supporter une croissance exponentielle du nombre d'appareils connectés de différents types, ceci étant l'un des piliers d'une stratégie globale de numérisation accélérée. En plus de cette croissance de connectivité, ces réseaux devront également supporter et offrir divers services pour de nouvelles industries aux exigences hétérogènes. Les concepteurs et développeurs de réseaux 5G sont alors contraints de fournir de nouvelles solutions et d'optimiser celles qui existent pour contenir les demandes croissantes de bande passante et les attentes plus élevées en termes de qualité d'expérience (QoE). Ces réseaux doivent également être hautement personnalisables pour s'adapter au divers cas d'usage et hautement automatisés pour raccourcir les délais de mise sur le marché. Les caractéristiques attendues des réseaux 5G ont incité les fournisseurs de réseaux mobiles à changer radicalement la façon dont ils conçoivent et développent leurs solutions, en adoptant une stratégie où les solutions logicielles sont privilégiées. Le domaine des réseaux mobiles et le reste du monde IT sont alors en train de converger et les fournisseurs de réseaux mobiles peuvent alors bénéficier de pratiques et outils à la pointe d'écosystèmes logiciels et d'informatique en nuage en plein essor. Les fonctions de réseau logicielles permettraient à ces fournisseurs d'avoir les niveaux de programmabilité et de reconfigurabilité dont ils ont besoin pour faire face à une évolution aussi rapide de la connectivité mobile. Cette thèse a pour objectif de fournir quelques optimisations de différentes parties des réseaux 5G et de la façon dont ils sont déployés et gérés, en espérant que cela contribuera à résoudre certains des problèmes auxquels sont confrontés les concepteurs de réseaux mobiles. Cette thèse propose des solutions à des problèmes spécifiques liés au traitement de la couche physique dans les réseaux 5G pour l'atténuation des interférences, ainsi qu'aux problèmes génériques liés à l'automatisation et à la personnalisation du réseau. Nous avons construit dans cette thèse une plateforme, qui sert à créer des réseaux mobiles de bout en bout, composée d'une plateforme réseau d'accès radio (RAN), coeur de réseau et orchestration, en utilisant les concepts et outils de la métaplateforme. La première partie traite la question d'interférence intercellulaire, qui risque d'être un handicap avec une densification prévue d'antennes dans les réseaux 5G. Nous proposons une solution pour atténuer les effets de cette interférence pour les transmissions du mobiles vers les stations de base. Cette solution est basée sur la technique de détection multi-récepteurs (JD). Elle répond aux exigences architecturales, fonctionnelles et techniques de l'intégration de JD dans des réseaux pratiques. Nous intégrons la solution JD dans une plateforme RAN dans la deuxième partie et étendons cette plateforme avec d'autres fonctionnalités. Nous adoptons la même approche dans la troisième partie de cette thèse pour fournir une solution pour automatiser le déploiement du coeur de réseau et la gestion du cycle de vie dans un environnement de virtualisation des fonctions réseau (NFV) et créer une plateforme de coeur de réseau réutilisable et orchestrée par open network automation platform (ONAP)5G networks and beyond will have to support an exponential growth in numbers of connected devices of different types, as a pillar of a global accelerated digitization movement. In addition to hyperscale characteristics, these networks will also have to support a diverse set of connectivity services for new industries with heterogeneous requirements. 5G network designers and developers are then compelled to provide new solutions and optimize the existing ones to contain increasing bandwidth demands and higher Quality of Experience (QoE) expectations. These networks also need to be highly customizable to adapt to varying use-cases and highly automated to shorten time-to-market delays. The expected characteristics of 5G networks inspired mobile network providers to radically change the way they design and develop their solutions by adopting an extensive softwarization strategy. Mobile networking domain and the rest of the IT world are then converging and mobile network providers can then benefit from thriving software and cloud computing ecosystems with state-of-the-art practices and tools. Software-based network functions would allow these providers to have the necessary levels of programmability and reconfigurability they need to deal with such a fast-paced evolution of mobile connectivity. This thesis aims at providing a few optimizations of different parts of 5G networks and the way they are deployed and managed, hoping that it would contribute in solving some of the problems that network designers are facing. It proposes solutions to specific problems related to the physical layer processing in 5G networks for interference mitigation, as well as generic issues related to network automation and customization. We built in this thesis an end-to-end network service fabric composed of a Radio Access Network (RAN), core and orchestration platform using Metaplatform concepts and tools. The first part treats the issue of Intercell Interference (ICI), which is expected to be a liability with a foreseen antenna densification in 5G networks. We propose a solution to mitigate ICI in Uplink (UL) transmissions, based on Joint Detection (JD) technique. The proposed solution satisfies the architectural, functional and technical requirement of JD integration in practical networks. We incorporate the JD solution in a RAN platform in the second part and extend this platform with other capabilities. We adopt the same approach in the third part of this thesis to provide a solution to automate core network deployment and life-cycle management in a Network Function Virtualization (NFV) environment and create a reusable core network platform orchestrated by Open Network Automation Platform (ONAP)
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Morrison, Matthew Arthur. "Design of a Reversible ALU Based on Novel Reversible Logic Structures." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4175.
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Programmable reversible logic is emerging as a prospective logic design style for implementation in modern nanotechnology and quantum computing with minimal impact on circuit heat generation. Recent advances in reversible logic using and quantum computer algorithms allow for improved computer architecture and arithmetic logic unit designs. In this paper, a 2*2 Swap gate which is a reduced implementation in terms of quantum cost and delay to the previous Swap gate is presented. Next, a novel 3*3 programmable UPG gate capable of calculating the fundamental logic calculations is presented and verified, and its advantages over the Toffoli and Peres gates are discussed. The UPG is then implemented in a reduced design for calculating n-bit AND, n-bit OR and n-bit ZERO calculations. Then, two 3*3 RMUX gates capable of multiplexing two input values with reduced quantum cost and delay compared to the previously existing Fredkin gate is presented and verified. Next, 4*4 reversible gate is presented and verified which is capable of producing the calculations necessary for two-bit comparisons. The UPG and RC are implemented in the design of novel sequential and tree-based comparators. Then, two novel 4*4 reversible logic gates (MRG and PAOG) are proposed with minimal delay, and may be configured to produce a variety of logical calculations on fixed output lines based on programmable select input lines. A 5*5 structure (MG) is proposed that extends the capabilities of both the MRG and PAOG. The comparator designs are verified and its advantages to previous designs are discussed. Then, reversible implementations of ripple-carry, carry-select and Kogge-Stone carry look-ahead adders are analyzed and compared. Next, implementations of the Kogge-Stone adder with sparsity-4, 8 and 16 were designed, verified and compared. The enhanced sparsity-4 Kogge-Stone adder with ripple-carry adders was selected as the best design, and its implemented in the design of a 32-bit arithmetic logic unit is demonstrated. The proposed ALU design is verified and its advantages over the only existing ALU design are quantitatively analyzed.
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Tachtler, Franziska Maria. "Best way to go? Intriguing citizens to investigate what is behind smart city technologies." Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-22303.
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The topic of smart cities is growing in importance. However, a field study in the city of Malmö, Sweden shows that there is a discrepancy between the ongoing activities of urban planners and companies using analytical and digital tools to interpret humans’ behavior and preferences on the one hand, and the visibility of these developments in public spaces on the other. Citizens are affected by the invisible data and software not only when they use an application, but also when their living space is transformed. By Research through Design, this thesis examines ways of triggering discussion about smart city issues, which are hidden in software and code. In this thesis, a specific solution is developed: a public, tangible, and interactive visualization in the form of an interactive signpost. The final, partly functioning prototype is mountable in public places and points in the direction of the most beautiful walking path. The design refers to a smart city application that analyzes geo-tagged locative media and thereby predicts the beauty and security of a place.The aim is to trigger discussion about the contradictory issue of software interpreting the beauty of a place. Through its tangible, non-digital, and temporary character, the interactive representation encourages passers-by to interact with the prototype.
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Evdokimova, Iuliia. "Direct bandpass methodology for synthesis and design of stand-alone filters and duplexers based on acoustic wave technologies." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/663826.
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Hoy en día, constantes exigencias del usuario han llegado a ser el motor del progreso tecnológico. La evolución de los teléfonos móviles y de los estándares de telecomunicaciones es un claro ejemplo de rápido avance tecnológico que continúa mejorando. Actualmente, es imposible imaginar nuestra vida sin un teléfono móvil. Gracias al desarrollo de Internet móvil, ahora tenemos variedad de oportunidades sin límites. Para mantener el nivel de intercambio de datos cada vez mayor, la alta velocidad, la latencia reducida y los servicios de banda ancha se han convertido en los objetos de constante mejora tecnológica. Emergido estándar de red 4G en el estado de difusión y próximo estándar 5G requerirán una mejora aún más desafiante de estas características clave, afectando a todo el dispositivo móvil, pero especialmente a los sistemas de filtrado.
El objetivo principal de esta tesis es proporcionar técnicas avanzadas de síntesis para diseño de filtros de topología en escalera, duplexores y multiplexores, teniendo en cuenta las limitaciones tecnológicas que se vuelven más estrictas en el transcurso del tiempo. Las clásicas metodologías de síntesis pueden no ser suficientes para abordar innovaciones tecnológicas futuras. Incluso las técnicas de optimización frecuentemente utilizadas en la industria de filtros acústicos pueden consumir mucho tiempo en estas nuevas condiciones. Con el fin de proporcionar un resultado de alta precisión compatible con tecnología avanzada en todo el rango de frecuencias, en esta tesis se desarrolla la metodología de síntesis directa en paso banda. El método es especialmente útil para Carrier Aggregation de bandas contiguas y no contiguas, donde la evaluación de fase a una frecuencia alejada de la banda de paso debe ser de mayor precisión para evitar interferencias entre múltiples canales de transmisores y receptores.
Uno de los aspectos más importantes del diseño del filtro acústico es la adaptación de las restricciones tecnológicas y el cumplimiento de máscara. Esta tesis tiene en cuenta diferentes parámetros tecnológicos como el coeficiente de acoplamiento efectivo de cada resonador, frecuencias de resonancia, energía almacenada, área de filtro ocupada y factor de calidad. Las técnicas de síntesis descritas analizan y gestionan estas restricciones para proporcionar el mejor resultado posible dentro del rango de parámetros especificados.
Se presta especial atención a la gestión de factor de calidad del resonador acústico. Cuando el factor de calidad se tiene en cuenta directamente en el procedimiento de síntesis, se puede obtener características especiales de la respuesta en transmisión y reflexión. En este caso, el filtro diseñado se denomina "lossy" y se caracteriza por dimensiones finitas. Cierta distribución del factor de calidad de cada resonador puede mantener la planitud de la banda de paso y evitar el redondeo de los bordes, manteniendo así la información transmitida y recibida. La metodología propuesta de síntesis de filtro acústico lossy acomoda las restricciones tecnológicas y gestiona las pérdidas de cada resonador de tal manera que se puede obtener un filtro óptimo.Today, constant end-user demands have become the engine of technological progress. Evolution of mobile phones and telecommunication standards is a clear example of fast technological breakthrough which continues to be improved. Nowadays, it is impossible to imagine our life without a mobile phone. Thanks to mobile Internet development, we have got unlimited opportunities. In order to maintain an ever-increasing data exchange, high data rates, reduced latency, and broadband data services have become objects of constant technological improvement. Emerged 4G network standard in deployment and upcoming 5G standard will require even more challenging enhancement of these key characteristics, affecting the entire mobile handset, but especially filtering systems. The main objective of this thesis is to provide an advanced synthesis techniques for ladder-type acoustic filters, duplexers, and multiplexers, taking into account technological constraints which become more stringent in course of time. Classical synthesis methodologies may not be sufficient in order to tackle future technological innovations. Even optimization techniques, mostly used in industry of acoustic filters, can be very time consuming in these new conditions. In order to provide an accurate result compatible with advanced technology on the whole frequency range, direct bandpass synthesis methodology is developed in this work. The method is particularly useful for intra-band and inter-band Carrier Aggregation where phase evaluation at frequency far away from the passband has to be of the highest accuracy in order to avoid interferences between multiple transmitter and receiver channels. One of the most important aspects of acoustic filter’ design is accommodation of technological constraints and mask specification fulfillment. This thesis takes into account such important technological parameters as effective coupling coefficient of each resonator, resonant frequencies, stored energy, occupied filter area, and quality factor. Described synthesis techniques analytically analyze and manage these constraints so as to provide the best possible result within the range of specified parameters. Special attention is paid to quality factor management of acoustic resonator. When quality factor is taken into account directly in synthesis procedure, special features of transmission and reflection response can be obtained. In this case, designed filter is called "lossy" and it is characterized by finite dimensions. Certain distribution of quality factor of each resonator can maintain the flatness of passband and avoid edge rounding, thus maintaining the transmitted and received information. Proposed methodology of lossy acoustic filter synthesis accommodates the technological constraints and manage losses of every resonator so that an optimum filter based on acoustic waves can be obtained.
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Albion, Peter. "Interactive multimedia problem-based learning for enhancing pre-service teachers' self-efficacy beliefs about teaching with computers: design, development and evaluation." University of Southern Queensland, Faculty of Education, 2000. http://eprints.usq.edu.au/archive/00001393/.
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[Abstract]: Research has suggested that, despite support through policy and resource provision,information and communications technologies (ICTs) have made little impact on the practiceof education and that limited teacher preparation for the use of ICTs represents a partialexplanation. The purpose of this study was to investigate what form of professionaleducation might be effective in preparing pre-service teachers to integrate ICTs into theirteaching. Self-efficacy beliefs about teaching with computers were identified as a potentiallysignificant source of influence on teachers' use of ICTs for teaching. It was proposed thatinteractive multimedia using a problem-based learning design (IMM-PBL) should be aneffective tool for increasing self-efficacy. Principles for the design of IMM-PBL were derivedfrom the relevant literature.An IMM-PBL package was designed and developed for delivery in a web browser formatusing content relevant to the integration of ICTs into teaching. Interviews with and sampleresponses prepared by computer-using teachers provided the basis for ensuring therelevance of content.The completed materials were evaluated in use with a group of 24 final year pre-serviceteachers in a Queensland university. Participants in the trials reported that the materialswere engaging and assisted their learning about integrating computers in their teaching. Astatistically significant increase in self-efficacy for teaching with computers was found forusers who had initially low self-efficacy for teaching with computers.The principles proposed for IMM-PBL design were found to offer a practical basis for thedevelopment of effective learning materials. With further development, IMM-PBL promisesto be a powerful and flexible approach to supporting learning for teachers and otherprofessionals.
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Dalmia, Sidharth. "Design and implementation of high-Q passive devices for wireless applications using System-On-Package (SOP) based organic technologies." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/15689.
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Rode, Sonia. "Inclusive and Accessible Workplaces: AI- and Robotics-Based Assistive Technologies for Professionals with High-Functioning Autism." Thesis, Uppsala universitet, Institutionen för informatik och media, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447221.
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Although every society member should be offered an equal chance to participate in working life, individuals with high-functioning autism encounter many barriers. Here, assistive technologies using AI and robotics can provide new possibilities to create accessibility and inclusion. This thesis followed the methodology of user-centred design by performing an online survey with 48 autistic professionals to understand their current work experiences and attitudes towards AI- and robotics-based assistive technologies. Based on the survey findings, neurotypical participants from different educational backgrounds ideated in workshops novel technological solutions. The survey results indicate that autistic professionals are open to AI and robotics to overcome, among others, barriers of sensory overload resulting from sounds and many simultaneous social interactions. Thus, the ideas of headphones using personalisation to cancel specific noises and a device summarising conversation content from team meetings for the remotely located professional can be supportive. Finally, the research results can be a starting point for future design ambitions addressing autistic individuals in their work environments.
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Maranan, Diego Silang. "Haplós : towards technologies for, and applications of, somaesthetics." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/10170.
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How can vibrotactile stimuli be used to create a technology-mediated somatic learning experience? This question motivates this practice-based research, which explores how the Feldenkrais Method and cognate neuroscience research can be applied to technology design. Supported by somaesthetic philosophy, soma-based design theories, and a critical acknowledgement of the socially-inflected body, the research develops a systematic method grounded in first- and third-person accounts of embodied experience to inform the creation and evaluation of design of Haplós, a wearable, user-customisable, remote-controlled technology that plays methodically composed vibrotactile patterns on the skin in order to facilitate body awareness—the major outcome of this research and a significant contribution to soma-based creative work. The research also contributes to design theory and somatic practice by developing the notion of a somatic learning affordance, which emerged during course of the research and which describes the capacity of a material object to facilitate somatic learning. Two interdisciplinary collaborations involving Haplós contribute to additional fields and disciplines. In partnership with experimental psychologists, Haplós was used in a randomised controlled study that contributes to cognitive psychology by showing that vibrotactile compositions can reduce, with statistical significance, intrusive food-related thoughts. Haplós was also used in Bisensorial, an award-winning, collaboratively developed proof-of-concept of a neuroadaptive vibroacoustic therapeutic device that uses music and vibrotactile stimuli to induce desired mental states. Finally, this research contributes to cognitive science and embodied philosophy by advancing a neuroscientific understanding of vibrotactile somaesthetics, a novel extension of somaesthetic philosophy.
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Tarling and Isabel. "Transforming teaching through the transformative integration of emerging technologies in the ePlay MakerSpace: a critical, socio-cultural design-based study." Thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/28367.
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Despite South African schools and teachers gaining greater access to the tools, innovations, concepts and advancements of emerging technologies (ETs), the potential of ETs to transform teaching and improve learning remains largely unexploited. The majority of the country’s schools are classified as disadvantaged, being resource constrained and functioning in contexts of multiple deprivation and poverty. Learning is severely compromised in many disadvantaged schools, as evidenced by learners’ persistent underachievement in standardised national and international assessments. Consequently, improving the quality of teaching especially at primary school level, is identified as a national priority. Three extensive curriculum reforms, intensified teacher professional development, and the provision of ETs, have however not achieved widespread and sustained change to teaching practices. This suggests that existing teacher professional development (TPD) initiatives do not effectively prepare teachers from the country’s disadvantaged schools to exploit the transformative potential of ETs, to change their practice and manage change within their complex and dynamic education contexts. Instead, ETs that originate in advanced economies are frequently assumed universally applicable and application-neutral. Informed by this perspective, TPD is designed to prepare teachers to use or teach with ETs, either emphasizing technical skills or competencies to use tools, or in rare cases focussing on the concepts, innovations and advancements of ETs. TPD models that systematically and explicitly prepare South Africa’s teachers from disadvantaged schools to exploit the transformative potential of ETs and change their practice is not available.
This study employs a socially embedded, progressive transformation perspective to ET. Accordingly, while it is assumed ETs have the capacity to improve learning, the form and processes of improvement and change to teaching practices are understood as locally developed by teachers. Informed by this perspective, transformative ET integration is conceptualised as contextually embedded, locally developed innovation and knowledge production to effect change to teaching and improve learning driven by contextually specific requirements and priorities. The transformative integration of ETs emphasizes the need to develop teachers dispositions to innovate and create, to experiment and take risks. However, within the field of education in South Africa, teachers’ dispositions reflect capacities to reproducing the structures of the field intent on increasing the flow of cultural capital, rather than dispositions of creativity and innovation.
This study employs a critical, socio-cultural design-based theoretical frame and asks how the transformation of teachers’ dispositions may translate into their transformative integration of emerging technologies. The ePlay MakerSpace model is conceptualised as providing both inculcation processes and enabling conditions to transform teachers’ dispositions. Using a design-based research approach, two iterations of the ePlay MakerSpace model are designed, enacted and formatively evaluated to refine the design principles for the ePlay MakerSpace inculcation processes and enabling conditions. Data is collected through teachers’ created artifacts, their reflections and online posts, the formative evaluations of each iteration, and school-visits and interviews with teachers 3 – 4 weeks after each ePlay MakerSpace iteration. The evidence presented indicates that the majority of teachers transformatively integrated ET in their classrooms and/or schools, to address local priorities and solve contextual challenges. Through a retrospective analysis of the data, the process to transform teachers’ dispositions was refined, as well as the design framework and design methodology for the ePlay MakerSpace. The study contributes to the development of theory relating to teacher change, and the processes and conditions that support teacher’ change.
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Arbogast, Michelle A. "Immersive Technologies in Preservice Teacher Education: The Impact of Augmented Reality in Project-Based Teaching and Learning Experiences." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1553266590134835.
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Barden, Pollie. "Older people and digital technology : from digital learners to digital leaders through participatory design with community-based organisations." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/31709.
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It is predicted that there will be more people over the age of 65 than under 5 by 2050 in developed countries. In recognition of the needs of an ageing population, there is a growing field of research in HCI focused on engaging older people with digital technologies. This thesis contributes to the field of ageing in HCI through a community-based participatory design investigation into the challenges and opportunities for older people to engage with digital tools in their everyday lives. We demonstrate how the commitments, practices and values of participatory design can be used to better understand and foster engagement between digital tools and older people through the support of community-based organisations. This is achieved through two case studies. The rst study with a traditional computer class at a local day centre. The second with a London-based intergenerational running club. The research reflects on and examines the details and decisions of the learning and adoption process across these two studies. We expand our view beyond the digital tools to the influences and situations that contribute to older people's attitudes and usage. Through the lens of participatory design and communities of practice we discuss the considerations of values, problem-solving, and identity that can potentially be transferred to other non-traditional digital learning environments for older people. We provide recommendations and reflect on our challenges to serve as guidance for other researchers engaging in similar participatory work `in-the-wild'.
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Li, Beidi. "Use of Building Energy Simulation Software in Early-Stage of Design Process." Thesis, KTH, Byggvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217902.
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In traditional planning process, energy analysts work on finalized architectural designs and have limited capability to amend inefficient energy features such as high aspect ratio. Energy efficiency being a major part of sustainable design, the need for performance-oriented design tools has become imminent. There is a wide range of energy simulation tools across the world. Crawley et al. (2005) proposes a plain comparison of the most common ones based on vendor-supplied information. The present report aims to identify simulation tools that can help architects making energy-efficient design decisions in early stage of building process and the most suitable programs will be tested on a standard case in Stockholm area with respect to their architecture, functionalities, usability and limitations.
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Cordier, Jan Adriaan. "An investigation into the design, development, production and support of a wildlife tracking system based on GSM/GPS technologies / J.A. Cordier." Thesis, North-West University, 2006. http://hdl.handle.net/10394/4296.
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The wildlife tracking market can be regarded as a niche market in the worldwide tracking industry. The methods considered for RF wildlife tracking are limited to techniques that can be reconciled with the cost, size and power consumption limitations required by this application. For this reason the primary method of wildlife tracking till recently was still based on an RF beacon transmitter fitted to the animal and a mobile manually operated tracking device that is equipped with a RF receiver. This method of tracking is very time consuming, as the animal is tracked by physically searching for it in the wild, which mostly limits the tracker to focus on one animal at a time. Another method that found limited use in wildlife tracking is GPS positioning combined with communication by means of satellite telemetry. This method of tracking is very expensive, the physical size of the tracking device limits the usage of this system to large animals, and there are to date not an efficient power source to drive this system for a desired period of time without putting undesired stress on the animal.
Recent advances in the world of wireless communications resulted in the widespread use of RF tracking based on mobile transceivers that communicate not with a mobile tracking device or with satellites but with the beacons of a fixed installed wireless network. The primary method of positional tracking used in this industry is GPS location based on triangulation, with data communication by means of GSM or an alternative network of fixed RF transmitters.
Using the communication capabilities of GSM networks as basis for wildlife tracking enables a level of efficiency, flexibility and cost-effectiveness that cannot be matched by the earlier approaches. As this new approach to wildlife tracking has not been applied in practice before as an integrated part of wildlife management systems, the need existed to investigate the design, development, production and support of a wildlife tracking system that is based on these advances in technology.
The results of this method of tracking opened up a whole new dimension in wildlife tracking for research, security and wildlife management, based on the fact that GPS is a global means of determining positional data and GSM is a globally accepted means of data transfer that is expanding each day.Thesis (M.Ing. (Electronical Engineering))--North-West University, Potchefstroom Campus, 2007.
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Stott, Debbie. "A framework for evaluating instructional design models resulting in a model for designing and developing computer based learning tools with GIS technologies." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1003430.
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With the increasing pressures and concerns in education regarding capability, lifelong learning, higher order cognitive skills, transdisciplinary education and so on, educators are seeking fresh ways to teach and new tools to support that teaching. In South Africa, Outcomes Based Education (OBE) has identified critical outcomes (skills) across all subject areas such as problem solving, teamwork, fostering critical thinking etc. as a way of responding to these pressures and concerns. But OBE has been criticised for lacking the necessary tools to develop these critical skills and to promote cross-discipline learning. One innovative way of offering transformative teaching, instruction and learning that may foster the development of these critical skills, particularly those concerned with critical thinking, is by using geographic information systems (GIS) technologies. The scope for using these technologies in secondary education is now being realised for teaching the more generic, cross-discipline skills described whereby students are learning not only about GIS but also with GIS. This realisation provides the opportunity to create flexible, computer-based learning materials that are rooted in authentic, real-world contexts, which aim to enhance the cognitive skills of the students. If these technologies can be used in an innovative way to develop critical outcomes and skills, a model needs to be defined to aid the design and development of learning materials using these technologies for use in schools. The primary aim of this study has been to develop such a model; a model which emphasises the development of real-world learning materials that develop higher-order thinking skills in learners. Another key product of this study is the submission of a comprehensive yet flexible framework for evaluating instructional design models found in the educational literature in order to determine if these design models can be used to develop learning materials forparticular contexts.
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Park, Yunseo. "Direct Conversion RF Front-End Implementation for Ultra-Wideband (UWB) and GSM/WCDMA Dual-Band Applications in Silicon-Based Technologies." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7563.
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This dissertation focuses on wideband circuit design and implementation issues up to 10GHz based on the direct conversion architecture in the CMOS and SiGe BiCMOS technologies. The dissertation consists of two parts: One, implementation of a RF front-end receiver for an ultra-wideband system and, two, implementation of a local oscillation (LO) signal for a GSM/WCDMA multiband application. For emerging ultra-wideband (UWB) applications, the key active components in the RF front-end receiver were designed and implemented in 0.18um SiGe BiCMOS process. The design of LNA, which is the critical circuit block for both systems, was analyzed in terms of noise, linearity and group delay variation over an extemely wide bandwidth. Measurements are demonstrated for an energy-thrifty UWB receiver based on an MB-OFDM system covering the full FCC-allowed UWB frequency range.
For multiband applications such as a GSM/WCDMA dual-band application, the design of wideband VCO and various frequency generation blocks are investigated as alternatives for implementation of direct conversion architecture. In order to reduce DC-offset and LO pulling phenomena that degrade performance in a typical direct conversion scheme, an innovative fractional LO signal generator was implemented in a standard CMOS process. A simple analysis is provided for the loop dynamics and operating range of the design as well as for the measured results of the factional LO signal generator.
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Ingabire, Paula. "Convergence of eco-system technologies : potential for hybrid electronic health record (EHR) systems combining distributed ledgers and the Internet of Medical Things towards delivering value-based Healthcare." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118548.
Full textAbstract:
Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, System Design and Management Program, 2018.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 64-66).
The Healthcare industry, just like any industry, is constantly racing to stay abreast with pace of technological innovations, especially at such a time where the industry is experiencing a strain on the global healthcare infrastructure. Specifically, the evolution of record management systems in the healthcare system has taken a slow and gradual transformation with each stage of transformation carrying over certain aspects and functions of previous stages. A survey of record management practices reveals that record management begun with paper-based records that have since partially been replaced with centralized Electronic Health Records (EHR). With the advent of Electronic Health Records enabled by distributed ledgers, we continue to see the inclusion of traditional paper-based functions beyond centralized EHR functions. Electronic data sharing in the healthcare ecosystem is constrained by interoperability challenges with different providers choosing to implement systems that respond to increasing their productivity. Prioritizing a patient-focused strategy during implementation of EHRs forces providers to implement systems that are more interoperable. A system engineering approach was adopted to guide the development and valuation of candidate architectures from Stakeholder analysis to concept generation and enumeration. Nine (9) key design decisions were selected with their combinations yielding 512 feasible hybrid architectures. In this paper, we proposed a hybrid EHR solution combining distributed ledger technologies and Internet of Medical Things, which contributes towards providing value-based healthcare. Leveraging properties of distributed ledgers and IoMT, the hybrid solution interconnects various data sources for health records to provide real-time record creation and monitoring whilst enabling data sharing and management in a secure manner.
by Paula Ingabire.
S.M. in Engineering and Management
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Jusis, Camilla. "Knot – A Signature Based Notification System." Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-23938.
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The thesis project underlines the importance of designing calm and subtle technologies, by exploring how mobile communicative technologies, such as cell phones, could notify their users about incoming information in a more natural, and non-intrusive manner. The aim of the thesis was to find a way for cell phones to act more appropriately in public and social settings, where they now often are considered intrusive due to their uninhibited manifestations.The thesis provides a theoretical understanding of how normative expectations of cell phone conduct are constituted and maintained within public and social settings. The theories are further grounded in practical work, where the project employ user centered design methods and techniques to, in a collaborative manner, together with users explore the research field to generate insights. Solutions have further been prototyped and evaluated together with users in their everyday settings.Taking inspiration from calm technology, the project looks into how information can be notified, in a more subtle manner in the periphery of the user’s attention. Users’ own priming abilities have been considered as a personal way to recognize the notification and to further associate it as relevant information.As a solution for intrusive cell phones, the thesis proposes Knot; a signature based notification system, which builds on friends’ abilities to recognize each other’s characteristic traits. The system consists of a notification rope, which is a free standing phone accessory that twists and turns, when new information is arriving to the user’s cell phone. It can present whom the information is from by shaping itself into the sender’s representative Knot-signature. If the user can recognize the signature, it will immediately trigger a meaningful association to the person who sent the information.The solution builds upon the restrictiveness between those who can associate a certain signature to a certain person, and those who cannot. For those who have the ability to associate to the signature, its role as a notifier will become meaningful and informative, while for others, who do not share this ability, the signature would be subtle and meaningless, and hence not interfering. The thesis exemplifies how interfaces could provide users with output in a more natural way, by considering users’ previous skills and knowledge, and primarily their priming abilities.
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Palm, Adam, and Veera Kokko. "Visual comfort in nursing rooms, from a patient’s perspective." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik och belysningsvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40696.
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The awareness regarding important aspects of how to plan and design healthcare environments is something that is constantly progressing. Even though these environments can be seen as complex, the knowledge and understanding of its many different users is often taken into consideration in today’s planning. Several studies have shown positive effects on the visual performance among the hospital staff but also positive effects regarding visual comfort that facilitates recovery and well-being among patients. However, when planning lighting in healthcare environments today, the focus often lies on providing good lighting qualities regarding the visual performance of the hospital staff and the patients are, by that, not taken in consideration to the same level of extent. Therefore this study was focused on analyzing if certain demands could be set on lighting in a nursing room, to improve the experience of visual comfort, from a patient perspective, while using two different lighting scenarios. The thesis has been conducted using an already approved and widely used method Evidence based design (EBD) through a literature study, a pre-study, and an experiment. This to evaluate and develop an innovative design to facilitate visual comfort from a patient's perspective. The visual parameters that the experiment has been focusing on are glare, luminance, contrasts, shadows, lighting principles, and the perception of objects. These parameters have been evaluated from a sitting, standing and lying position in two different lighting scenarios, developed from the hypothesis, without access to daylight. A healthcare environment has a number of different users, that all use the facilities in different ways. Therefore it was important that the innovative design, constructed for the experiment, did not compromise the visual comfort or need of light for the other users. A questionnaire was created, based on the visual parameters, to help answer the research questions. The experiment had a total of 30 participants, where each participant answered the questionnaire six times, one for each position and a total of three times in each lighting scenario. The results were compiled and the mean values were analyzed to evaluate differences and similarities between the two lighting scenarios and between the positions. The results of the experiment show that there are certain demands that can be set on the artificial lighting in a nursing room, and it also shows that it is of great importance to plan for a various lighting environment since it can enhance the experience of visual comfort. Despite this, it is important for a lighting designer to carefully analyze and evaluate the patient's need for light in the specific ward that is being designed. To achieve a sustainable lighting solution it is important to remember that all the sustainability factors, such as the social, economic and environmental factors, are equally important to create a sustainable development.Medvetenheten gällande viktiga aspekter av hur man planerar och utformar vårdmiljöer är något som ständigt ökar. Trots att dessa miljöer kan ses som komplexa, tas ofta kunskap och förståelse i beaktning för miljöernas många olika användare vid dagens planering. Flera studier har visat positiva effekter på visuell prestanda hos sjukhuspersonalen, men även positiva effekter gällande visuell komfort som påskyndar återhämtning och ökar välbefinnande bland patienter. När belysningsplanering idag utförs i vårdmiljöer ligger fokuset ofta på att tillgodose ljuskvaliteter med avseende för sjukhuspersonalens visuella prestanda och patienterna beaktas därmed inte i samma omfattning. Därför har denna studie fokuserats på att analysera om vissa krav kan ställas på artificiell belysning i ett vårdrum, för att förbättra upplevelsen av visuell komfort utifrån en patients perspektiv, vid utvärdering av två olika belysningsscenarion. Studien har genomförts med hjälp av en redan beprövad och allmänt använd metod Evidensbaserad design (EBD), genom en litteraturstudie, en förstudie och ett experiment. Detta för att utvärdera och utveckla en innovativ design med fokus på att underlätta visuell komfort från patientens perspektiv. De visuella parametrar som experimentet har fokuserat på är bländning, luminans, kontraster, skuggor, olika belysningsprinciper samt uppfattningen av objekt. Dessa parametrar har utvärderats från en sittande, stående och liggande position, vid två olika belysningsscenarion med enbart artificiell belysning, utvecklad utifrån hypotesen. I en vårdmiljö vistas ett antal olika användare som alla använder anläggningarna på olika sätt. Det ansågs därför viktigt att den innovativa designen, som konstruerats för experimentet, inte påverkade den visuella komfort eller behovet av ljus för övriga användare. Ett frågeformulär skapades, baserat på de visuella parametrarna, för att besvara frågeställningen. Experimentet hade totalt 30 deltagare, där varje deltagare besvarade frågeformuläret sex gånger, ett formulär per position och totalt tre gånger vid varje ljusscenario. Resultaten sammanställdes och medelvärden analyserades för att utvärdera skillnader och likheter mellan de två belysningsscenarierna samt mellan positionerna. Resultaten av experimentet visar att det finns särskilda krav att ställa på den artificiella belysningen i ett vårdrum. Resultatet visar även att det är av stor betydelse att planera in en varierad ljusmiljö då det kan förbättra upplevelsen av den visuella komforten. Utöver detta är det även viktigt för en ljusdesigner att noggrant analysera och utvärdera patientens behov av ljuset i den specifika avdelningen som utformas. För att uppnå en hållbar belysningslösning är det viktigt att ha i åtanke att alla hållbarhetsfaktorer, såsom de sociala, ekonomiska och ekologiska, är lika viktiga att ta hänsyn till för att skapa en hållbar utveckling.
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Petersson, Rasmus, and Rex Tigerstrand. "Stadsnära Norrskensturism : Viktiga parametrar gällande artificiell belysning för utvecklingen av norrskensturism i ett stadsnära läge." Thesis, Tekniska Högskolan, Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-50435.
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Enligt Tillväxtverket (2019) har den totala konsumtionen inom svensk turismnäring ökat med 124% mellan åren 2000–2018. Denna trend kan även utläsas för den svenska naturturismen där en studie från Mittuniversitet (2014) visade att det inom naturturism omsätts ca 3.6 miljarder kronor varje år och att 40% av företagen var i en tillväxtfas (Fredman, Margaryan, 2014). En form av naturturism som växt sig stark norra Sverige under senare år är norrskenturismen (Jóhannesson & Lund, 2017; Mathisen, 2017; Friedman, 2010), som i enbart Kiruna kommun beräknas omsätta runt 100 miljoner varje år (Naturturismföretagen. 2019). Idag är denna typ av turism framförallt koncentrerad till landsbygden med långa avstånd och höga resekostnader som följd. Samtidigt som många turister har en negativ påverkan på djur och natur (Björnsdóttir, 2015). Syftet med studien är således att ta fram och föra en diskussion kring vilka aspekter av en belysningsanläggning som är viktiga för att göra norrskensturismen mer stadsnära och tillgänglig för en större del av befolkningen. Arbetet ska även ge förslag på generella anpassningar av den artificiella belysningen som kan appliceras på anläggningen. Metoden som används är en kombination av litteraturstudie, intervjuer och en analys av befintliga belysningsprogram. Litteraturstudien gav en bakgrundsundersökning inom ämnet samt tydliggjorde hur studiens syfte skulle formuleras. Intervjuerna genomfördes med fyra ljusdesigners där deras tankar och idéer gällande vilka aspekter som anses viktiga för att skapa en stadsnära norrskensturism. I studiens sista steg analyserades redan befintliga belysningsprogram från städer där belysningsanläggningen anpassats för att minimera stadens ljusföroreningar. Analyserna gav sedan konkreta åtgärdsförslag som jämfördes med intervjudeltagarnas resonemang. Studiens resultat visar på att armaturavskärmning, ljusfördelning, ljuspunktshöjder och belysningsstyrning anses vara de viktigaste aspekterna för den artificiella belysningen. Lagar, standarder och andra former av styrdokument är en annan aspekt som ofta togs upp, med resonemang för hur dessa kan påverka en belysningsanläggnings hösta respektive lägsta nivå. Gällande de generella förslagen på anpassningar redovisas att både anpassningar av ljuskällors färgtemperaturer och ljusriktning kan appliceras på en anläggning förhållandevis enkelt. Men att en väl anpassad belysningsstyrning är svårare, det ska dock tilläggas att denna anpassning kan ha större och mer positiv påverkan för en norrskensanpassad belysningsanläggning. Till de personer som vill utveckla denna typ av projekt rekommenderas att i ett tidigt skede blanda in eventuella intressenter och ta hänsyn till deras aspekter. Arbetets ämnesområde är relativt outforskat och en väl utförd förstudie inför projektet är därför av stor vikt för att minimera eventuella misstag. Studien begränsas av att enbart ta hänsyn till och föra en diskussion kring de aspekter som uppkommit under intervjuerna. Dessa aspekter är endast hämtade ur en ljusdesigners perspektiv och tydliggör således inte andra intressenters intressen inom ämnet.According to The Swedish Agency for Economic and Regional Growth (2019) the total consumption of tourism in Sweden has grown with 124% between the years 2000-2018. This trend that also applies for the Swedish nature-tourism where a study from Mid Sweden University (2014) shows that nature-based tourism each year has approximately 3.6 billion SEK in turnover, and that 40% of concerned businesses is in a phase of growth (Fredman & Margaryan, 2014). Northern light-tourism is a form of nature-tourism that has grown quickly in northern Sweden in recent years (Jóhannesson & Lund, 2017; Mathisen, 2017; Friedman, 2010). In Kiruna alone it is estimated that the northern light tourism alone has a revenue of 100 million SEK each year (Swedish Nature and Ecotourism Association, 2019). This form of tourism often has a high traveling costs and is concentrated to the countryside with far traveling distances between each site. In the same time, a lot of tourists on the countryside has a negative impact on the nature and wildlife (Björnsdóttir, 2015). The purpose of this study is therefore to point out and discuss around different aspects concerning the artificial lighting with an impact on how we can develop a northern light- tourism in a more urban environment. The study shall also give general suggestions for how these aspects can be adapted into a light installation. The method that is use in this research is a literature study, interviews and an analyse of four cities’ lighting masterplans. The literature study was used to specify the foundation and aim of the study. Where the interviews clarified the important aspect for an urban development of northern light-tourism from a lighting designers’ point of view. In the last phase of the study, four lighting masterplans with a clear focus on how to prevent light pollution where analysed. These analyses then gave some action proposals that can be compared to the answers from the interview participants. The results from the study show that shielded luminaires, light distributions, luminaire installation height and lighting controls are considered to have the largest impact on the lighting installation regarding the visibility of the northern light. Also, laws and regulations were a common answer, with some reasoning about the regulations of max and min requirements from an installation. Regarding the general proposals some suggestions concerning luminaire colour temperature and light distribution can quite easy be applied to an installation, in comparison to a more complicated lighting control. To everyone that would like to develop a project of this kind it is recommended that in an early stage get in contact with any stakeholders and listen to their opinions. In that way any mistakes are minimised even though the topic of this study is relatively unexplored.The study is limited to only show and discuss the answers that came up under the interviews, and that these answers is only reproduced from a lighting designers’ point of view.
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Sagala, Ramadhan Kurniawan. "Visualization of Vehicle Usage Based on Position Data for Root-Cause Analysis : A Case Study in Scania CV AB." Thesis, Uppsala universitet, Människa-datorinteraktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355909.
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Root cause analysis (RCA) is a process in Scania carried out to understand the root cause of vehicle breakdowns. It is commonly done by studying vehicle warranty claims and failure reports, identifying patterns that are correlated to the breakdowns, and then analyzing the root cause based on those findings. Vehicle usage is believed to be one of the factors that may contribute towards the breakdowns, but the data on vehicle usage is not commonly utilized in RCA. This thesis investigates a way to help RCA process by introducing a dataset of vehicle usage based on position data gathered in project FUMA (Fleet telematics big data analytics for vehicle Usage Modeling and Analysis). A user-centered design process of a visualization tool which presents FUMA data for people working in RCA process was carried out. Interviews were conducted to gain insights about the RCA process and generate design ideas. PACT framework was used to organize the ideas, and Use Cases were developed to project a conceptual scenario. A low fidelity prototype was developed as design artifact for the visualization, and a formative test was done to validate the design and gather feedback for future prototyping iterations. In each design phase, more insights about how visualization of vehicle usage should be used in RCA were obtained. Based on this study, the prototype design showed a promising start in visualizing vehicle usage for RCA purpose. Improvement on data presentation, however, still needs to be addressed to reach the level of practicality required in RCA.Root cause analysis (RCA) är en process på Scania som används för att förstå rotorsaken till fordons behov av reparation.Oftast studeras fordonets försäkringsrapporter och felrapporter, för att identifiera och analysera mönster som motsvarar de olika behoven för reparation. Fordonsanvändningen tros vara en av de faktorer som bidrar till reparationsbehoven, men data angående detta används sällan i RCA. Denna rapport undersöker hur RCA-processen kan dra nytta av positionsdata som samlats in i projekt FUMA (Fleet telematics big data analytics for vehicle Usage Modeling and Analysis). En användarcentrerad designmetodik har använts för att ta fram ett visualiseringsverktyg som presenterar FUMA-data för personer som deltar i RCA-processen. Intervjuer har genomförts för att samla insikter om RCA-processen och för att generera designidéer. PACT-ramverket användes sedan för att organisera idéerna, och användningssituationer togs fram för att skapa ett konceptuellt scenario. En low-fidelity prototyp togs fraför personer som deltar i RCA-processenm som en designartefakt för visualiseringen och ett utvecklande test genomfördes för att validera designen och samla in feedback för framtida iterationer av prototyping. Under varje design-fas, samlades mer insikter om hur visualiseringen av fordonsanvändning skulle kunna användas för RCA in. Baserat på detta, visade design-prototypen en lovande start för visualisering av fordonsanvändning i RCA. Förbättringar på hur data presenteras måste dock genomföras, så att rätt genomförbarhet för RCA uppnås.
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Barbaranelli, Andreas, and Andreas Wallin. "Seismic Analysis of Norra Tornen : A Comparison Based on the Requirements in Eurocode 8." Thesis, KTH, Bro- och stålbyggnad, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-253823.
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In Sweden, buildings are not designed to withstand earthquakes due to the rarity of an earthquake event and its consequential damage. However, the aim of this thesis was to study the seismic performance of some of the highest buildings in Stockholm, called Innovationen and Helix. The purpose of the study was to get an understanding of earthquake engineering for high rise buildings and to compare the behavior of the two towers during seismic action. In order to compare the two buildings and get an understanding of what will affect the seismic performance, Eurocode 8 was used. The Eurocode standard lists several properties that impacts the seismic resistance of buildings. One of the goals was to study how those factors influence the behavior of Innovationen and Helix and finally compare the results to each other in order to draw valid conclusions. The method to perform the analysis was a modal analysis using a finite element analysis program. The program used contains predefined response spectra’s based on Eurocode 8 which is used to define the seismic load acting on the structures. The extracted results are listed below: - Frequencies and mode shapes - Modal masses - Level and total masses - Accelerations - Displacements The conclusion of the study was that Innovationen and Helix have similar properties and some points from Eurocode 8 were better fulfilled by Helix and others by Innovationen: - Uniformity, symmetry and redundancy (Innovationen fulfills the requirements better than Helix) - Bi-directional resistance and stiffness (Innovationen fulfills the requirements better than Helix) - Torsional resistance and stiffness (Helix fulfills the requirements better than Innovationen) - Adequate foundation (Helix fulfills the requirements better than Innovationen) Of the two parameters studied, the height was the one with the most influence on seismic resistance.
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Rathnam, Tarun. "Using Ontologies to Support Interoperability in Federated Simulation." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4788.
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A vast array of computer-based simulation tools are used to support engineering design and analysis activities. Several such activities call for the simulation of various coupled sub-systems in parallel, typically to study the emergent behavior of large, complex systems. Most sub-systems have their own simulation models associated with them, which need to interoperate with each other in a federated fashion to simulate system-level behavior. The run-time exchange of information between federate simulations requires a common information model that defines the representation of simulation concepts shared between federates. However, most federate simulations employ disparate representations of shared concepts. Therefore, it is often necessary to implement transformation stubs that convert concepts between their common representation to those used in federate simulations. The tasks of defining a common representation for shared simulation concepts and building translation stubs around them adds to the cost of performing a system-level simulation.
In this thesis, a framework to support automation and reuse in the process of achieving interoperability between federate simulations is developed. This framework uses ontologies as a means to capture the semantics of different simulation concepts shared in a federation in a formal, reusable fashion. Using these semantics, a common representation for shared simulation entities, and a corresponding set of transformation stubs to convert entities from their federate to common representations (and vice-versa) are derived automatically. As a foundation to this framework, a schema to enable the capture of simulation concepts in an ontology is specified. Also, a graph-based algorithm is developed to extract the appropriate common information model and transformation procedures between federate and common simulation entities.
As a proof of concept, this framework is applied to support the development of a federated air traffic simulation. To progress with the design of an airport, the combined operation of its individual systems (air traffic control, ground traffic control, and ground-based aircraft services) in handling varying volumes of aircraft traffic is to be studied. To do so, the individual simulation models corresponding to the different sub-systems of the airport need to be federated, for which the ontology-based framework is applied.
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Patel, Jaitra. "Balance It! : Designing a game-based learning tool for strategic sustainable development." Thesis, Uppsala universitet, Industriell teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-422718.
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In recent times, companies have been motivated to transition towards sustainable development. This motivation is driven by several external and internal factors such as awareness about limited resources, environmental degradation, economic profitability, changes in regulations, etc. Transitioning towards sustainability is not an easy task. There can be several challenges such as the multi-dimensional aspect of sustainable development, changes in workflow , investing in/inventing new technology , etc. T o tackle these challenges, a strategic transition is required. In order to help organizations strategically move towards sustainable development, Göran Broman and Karl- Henrik Robèrt have provided a framework through their research. It can be an overwhelming task for a company to understand and implement this framework. The thesis addresses this challenge by designing a board game around the operational procedure provided by the framework. To develop the game, Evensen et al.’s model was leveraged which utilized different inputs such as literature review, Broman and Robèrt’s framework, and thematic analysis of interviews as inputs for game development. The interviewing process included semi-structured interviews of eight employees (sustainability-related positions) from different companies to understand how their companies are perceiving sustainable development, implementing sustainable practices, and what are the needs and challenges faced. This thesis contributes to academia in two ways. First, it extends the Framework for Strategic Sustainable Development (FSSD) by providing an application-based learning tool. After studying the theoretical side of the framework, the developed game can enhance the understanding of the framework. Second, it modifies the game design model by substituting generative research with a framework (FSSD) as an input and further discusses the benefits of having FSSD as an input element. From a practical perspective, apart from providing a better understanding of sustainability and educating companies about FSSD, the board game session enables the employees to think about how to implement FSSD for their specific scenario. Additionally, it also provides companies a controlled environment to think about risks and foresee the consequences of their future actions. Hence, providing a safety net before the initiation of the implementation process.
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Toriseva, Jenni. "Biofonia : A citizen science service to monitor biodiversity." Thesis, Umeå universitet, Designhögskolan vid Umeå universitet, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-155160.
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An increasing amount of both physical and mental layers keep distancing urban dwellers from the biophysical envi- ronment that we often call nature. Environmental psycholo- gists have coined the term ‘extinction of experience’ to de- scribe the decreasing amount of encounters urban dwellers have with the natural environment. With the depletion of these experiences we have less relation to the natural world. And what we cannot relate to, we find hard to value. The intent has been to explore new ways urban dwelling adults could interact with the natural environment in order to help them relate to the abstract notion of biodiversity. The final concept is inspired by expert and user insights gathered through ethnographic research methods. The resulting design concept is a service and product eco- system that is based in the field of soundscape ecology.
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Palmer, Andrew. "The Design and Development of an Additive Fabrication Process and Material Selection Tool." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3635.
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In the Manufacturing Industry there is a subset of technologies referred to as Rapid Technologies which are those technologies that create the ability to compress the time to market for new products under development . Of this subset, Additive Fabrication (AF), or more commonly known as Rapid Prototyping (RP), acquires much attention due to its unique and futuristic approach to the production of physical parts directly from 3D CAD data, CT or MRI scans, or data from laser scanning systems by utilizing various techniques to consecutively generate cross-sectional layers of a given thickness upon the previous layer to form 3D objects. While Rapid Prototyping is the most common name for the production technology it is also referred to as Additive Manufacturing, Layer Based Manufacturing, Direct Digital Manufacturing, Free-Form Fabrication, and 3-Dimensional Printing. With over 35 manufacturers of Additive Fabrication equipment in 2006 , the selection of an AF process and material for a specific application can become a significant task, especially for those with little or no technical experience with the technology and to add to this challenge, many of the various processes have multiple material options to select from . This research was carried out in order to design and construct a system that would allow a person, regardless of their level of technical knowledge, to quickly and easily filter through the large number of Additive Fabrication processes and their associated materials in order to find the most appropriate processes and material options to create physical reproductions of any part. The selection methodology used in this paper is a collection of assumptions and rules taken from the author's viewpoint of how, in real world terms, the selection process generally takes place between a consumer and a service provider. The methodology uses those assumptions in conjunction with a set of expert based rules to direct the user to a best set of qualifying processes and materials suited for their application based on as many or as few input fields the user may be able to complete.M.S.
Department of Industrial Engineering and Management Systems
Engineering and Computer Science
Industrial Engineering MS
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Iezzi, Valeria. "Connectedness : Designing interactive systems that foster togetherness as a form of resilience for people in social distancing during Covid-19 pandemic. Exploring novel user experiences in the intersection between light perception, tangible interactions and social interaction design (SxD)." Thesis, Malmö universitet, Malmö högskola, Institutionen för konst, kultur och kommunikation (K3), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-37697.
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This thesis project explores how interactive technologies can facilitate a sense of social connectedness with others whilst remotely located. While studying the way humans use rituals for emotional management, I focused my interest on the act of commensality because it is one of the oldest and most important rituals used to foster togetherness among families and groups of friends. Dining with people who do not belong to the same household is of course hard during a global pandemic, just like many of the other forms of social interactions that were forcibly replaced by the use of technological means such as video-chat apps, instant messaging and perhaps an excessive use of social networking websites. These ways of staying connected, however, lack the subtleties of real physical interaction, which I tried to replicate with my prototype system, which consists of two sets of a lamp and a coaster which enable to communicate through light and tactile cues. The use of such devices creates a new kind of ritual based on the simultaneous use of the devices by two people, thus enabling a new and original form of commensality that happens through a shared synchronized experience.