Upcycling of textiles is a well-known method to remake worn textiles and decrease the environmental impact coming from the textile industry. Many fast fashion companies have tried to implement upcycling in their own textile value chains to become more circular. Although the effort is good in theory, there is more to be done to get better efficiency when it comes to upcycling textile fashion products. The purpose of this report was to study the obstacles in the textile upcycling chain for small-scaled actors that are engaged in design driven upcycling. This report partly investigates a specific textile value chain that is based on redesigning home textiles that comes from textile consumer waste. The report investigates the collaboration between supplier, designer and manufacturer in this specific value chain. This was by outlining their current communication and process steps. The report intends to form a ground for creation of communication tools for actors working similarly. Re:textile at Science Park Borås is a project that is working towards developing new design principles, business models and production systems in the textile industry for a better circular flow system. The cooperation with Anna Lidström, Artistic Director at Re:textile, made it possible to investigate the upcycling industry and identify the obstacles in the pre-production and production process. For collecting information for this report, data research and interviews with Swedish companies have been done. The companies that attended the interviews were from different companies in the textile upcycling industry, that were provided with as much information as possible for the analysis. The companies that attended the interviews were from different companies in the textile upcycling industry. The companies were Rave Review, XV Production, Björkåfrihet and SIPTex. The information from the interviews contributed a ground for the analysis. The semi-structured interviews varied from telephone interviews and visits. The compilations from the interviews have been carefully used to answer the reports research questions. Conclusions are presented as obstacles for the textile upcycling chain at design driven small-scaled actors. One obstacle is to cater bigger quantities of textile consumer waste that keeps the same quality. Another obstacle is the way of ensuring the quality of the product through the value chain to consumers. The third obstacle is that the communication tools are not written according to any principles which contribute to mistakes in the manufacturing process. / Återbruk av textilier är en väl omtalad metod för att ta vara på använda textilier för att minska på miljöpåverkan som kommer från textilindustrin. Många snabbt modeväxlande företag har försökt implementera återbruk i deras egna värdekedjor för att bli mer cirkulära. Även om tanken är god, så är det mer som behöver göras för att få en bättre effektivitet när det kommer till att återbruka textila modeprodukter. Syftet med rapporten var att undersöka hinder i den textila återbrukskedjan hos småskaliga aktörer som ägnar sig åt designdriven återbruk. Rapporten utreder dels en specifik textil värdekedja som grundar sig på att omdesigna hemtextilier som kommer ifrån textilt konsumentavfall. Rapporten utreder samarbetet mellan leverantör, designer och tillverkare i denna specifika värdekedja. Detta genom att redogöra för deras nuvarande kommunikation och processteg. Studien avser att ligga till grund för skapandet av kommunikationsverktyg för aktörer som arbetar liknande. Re:textile på Science Park Borås är en verksamhet som jobbar med att utveckla nya designmetoder, företagsmodeller samt produktionssystem i textilindustrin för ett bättre cirkulärt flödessystem. Samarbetet med Anna Lidström, Konstnärlig Ledare på Re:textile gjorde det möjligt för författarna att undersöka återbruksindustrin och identifiera bristerna i förproduktion och produktionsprocessen. För insamling av information till denna rapport har datainsamling och intervjuer med svenska företag gjorts. Företagen som ställde upp på intervju var ifrån olika verksamheter i den textila återbruksindustrin. Företagen var Rave Review, XV Production, Björkåfrihet och SIPTex. Information från intervjuerna bidrog till underlag för en analys. De semi-konstruerade intervjuerna varierade med både telefonintervju samt platsbesök. Sammanställningarna från intervjuerna har med aktsamhet använts för få svar på rapportens frågeställningar. Slutsatser redogörs som hinder för den textila återbrukskedjan hos designdrivna småskaliga aktörer. Ett hinder är bland annat att tillgodose större kvantiteter av textilt konsumentavfall som håller samma kvalitet. Ett annat hinder är att säkerställa kvalitén av produkten genom värdekedjan till kund. Ett tredje hinder är att kommunikationsverktygen inte är skrivna enligt några principer vilket bidrar till misstag i tillverkningsprocessen.

No / A multivariable model of an automotive gas turbine, obtained from the linearized system equations is investigated. To facilitate vehicle speed changes, whilst protecting the system against thermal damage, control of the power turbine inlet gas temperature and gas generator speed is proposed by feedback regulation. Fuel flow and the power turbine nozzle area variations are the selected, manipulatable inputs. Owing to the limited control energy available for regulation purposes a multivariable, optimum, minimum control effort strategy is employed in the inner loop controller design study. Simulated, open and closed loop system responses are presented for purposes of comparison. Significant improvements in the transient response interaction reaction times and low steady state output interaction achieved using passive compensation and output feedback alone. Simplification of the closed loop configuration is proposed in the final implementation without performance penalties.

Yes / Energy consumption (EC) of consumers primarily depends on comfort level (CL) affirmed by brain sensations of the central nervous system. Environmental parameters such as surroundings, relative humidity, air temperature, solar irradiance, air pressure, and cloud cover directly influence consumer body temperature that in return affect blood dynamics perturbing brain comfort sensations. This CL (either in summer, winter, autumn, or spring season) is a function of external environment and internal body variations that force a consumer toward EC. To develop a new concept of consumer's EC, first the authors described environment parameters in detail with relation to surroundings and EC. Considering this, they tabulated a generic relation of consumer's CL with EC and environment temperature. Second, to build an inter-related bond between the environmental effects on consumer body dynamics, they analysed theoretically and mathematically above mutual relations between medical and environmental sciences. Finally, they present their conceptual EC model based on a closed-loop feedback system. This model is a complex non-linear adaptive system with environmental and surrounding parameters as input to the system resulting in an optimised EC, considering consumer CL as a key parameter for the system.

Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-07-30T13:44:39Z No. of bitstreams: 1 RAFAEL BEZERRA CORREIA LIMA - DISSERTAÇÃO PPGEE 2012..pdf: 4664268 bytes, checksum: f5a0acf8cf73f941fd6fc59ff1dcfbb2 (MD5) / Made available in DSpace on 2018-07-30T13:44:39Z (GMT). No. of bitstreams: 1 RAFAEL BEZERRA CORREIA LIMA - DISSERTAÇÃO PPGEE 2012..pdf: 4664268 bytes, checksum: f5a0acf8cf73f941fd6fc59ff1dcfbb2 (MD5) Previous issue date: 2012-08-10 / É proposta nessa dissertação a utilização de conceitos de subespaços na identificação de modelos multivariáveis de ordem reduzida com atrasos. A metodologia desenvolvida se baseia na estimativa da resposta ao degrau do sistema a partir de projeções dos seus sinais de entradas e saídas. O problema é dividido em duas etapas, primeiramente a estimação de modelos em malha aberta seguido do estudo de sistemas em malha fechada. Finalmente os conceitos estudados são postos em prática através de simulações numéricas e experimentações práticas em plantas reais. / It is proposed in this dissertation the use of concepts of subspaces in the identification of multivariable models of reduced order with time delays. The developed methodology is based on the estimation of the step response of the system from projections of its input signals and outputs. The problem is divided into two stages, first: estimating models in open loop, then followed by the study of closed loop systems. Finally, the concepts studied are implemented through numerical simulations and practical experiments in real plants.

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Our modern “traditional” agricultural system is not sustainable. This system is highly dependent on limited resources such as land, oil and water. It also has numerous negative impacts, including the depletion of resources leading to higher prices, pollutions leading to health risks, global warming, deforestation and biodiversity loss. These dependencies and consequences are combined with a growing and ever more affluent global population which requires greater amount of resources to support its growth and which increases the negative impacts on the environment. All indicates that our system is reaching its limits and that there is a need for new solutions. This research introduces the general context (problem and existing research) and explores an alternative, namely: Intensive Vertical Urban Agriculture (I.V.U.A.). This method seems to offer two particularly interesting promises beneficial for Sustainable Urban Development: the reduction of transportation, and the integration of food production in the urban nutrient and energy cycles. However, to achieve these potential benefits the technology (in a broad sense) has to meet several challenges and there is a need for further experimentation. This study explores challenges of I.V.U.A. and key factors enabling or hindering experimentation in this field. This investigation identified key barriers to further development of I.V.U.A. through the use of a case study. The Plantagon International ABis a unique project which will be built in 2013, in Linkoping, Sweden. It will be the first vertical greenhouse of a considerable scale in the world with a research and commercial aim. Barriers to I.V.U.A. were identified as: - Lack of awareness about the problems with our modern food supply, and hence missed opportunities for S.U.D. - Attitudes that are working against I.V.U.A. and competition for recognition with other forms of agriculture as alternative to the problem of food production - Lack of technical abilities, knowledge and skills in I.V.U.A. - Funding/supporting infrastructures (physical or informational) - Blockages that are the result of administrations and policies which are largely based around “traditional” agriculture. Finally, a set of recommendations was drawn from the interviews of the case study and the literature review, to help planners and decision-makers lift these barriers and enable experimenting. These four implications to consider and explore are: - Gaining understanding of the complexity of S.U.D.problems and the need for a wide range of solutions which include I.V.U.A.; - Including a greater amount of stakeholders, and considering contexts - Improving access to land but also to resources and infrastructures - Building support to enable I.V.U.A. to thrive on its own