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

La route des étoiles et autres nouvelles, suivi de Présence du réalisme magique dans deux nouvelles québécoises et deux nouvelles sud-américaines, essai

Provost, Catherine January 2015 (has links)
La première partie de ce mémoire présente La route des étoiles et autres nouvelles, recueil de quatre nouvelles réalistes magiques mettant en scène des glissements du réel vers le surnaturel, lesquels sont acceptés par les personnages. Ces derniers, après avoir été en contact avec le côté magique des choses, perçoivent différemment le monde. Suit la seconde partie, intitulée Présence du réalisme magique dans deux nouvelles québécoises et deux nouvelles sud-américaines. Le chapitre 1 offre un bref aperçu des origines du réalisme magique, puis aborde les différentes théories et définitions qui lui sont rattachées. Dans le chapitre 2, une analyse de deux nouvelles québécoises (« La clé des océans » de Nicolas Dickner et « Apte au travail » de Michel Dufour) et de deux nouvelles sud-américaines (« La maison en sucre » de Silvina Ocampo et « Le noyé le plus beau du monde » de Gabriel García Márquez) a pour but d’identifier des traces du sous-genre qu’est le réalisme magique. Ce dernier s’incarne différemment en fonction de l’origine des auteurs. Ainsi, bien que la subversion soit présente tant chez les auteurs sud-américains que chez les auteurs québécois, on trouve chez ces derniers davantage d’humour et d’ironie. En outre, les textes québécois étudiés ici s’apparentent davantage à la poétique de la nouvelle, tandis que ceux sud-américains semblent plus près du conte. Enfin, le chapitre 3 consiste en un retour sur La routes des étoiles et autres nouvelles et clôt le mémoire en présentant les intentions tant thématiques que poétiques derrière chacune des nouvelles du recueil. Une mise en parallèle de ces textes avec ceux de Dickner, Dufour, Ocampo et García Márquez permet d’effectuer un retour réflexif sur l’écriture réaliste magique.
2

Inter-Satellite Link Design for Nanosatellites in New Space

Fredmer, Andreas January 2020 (has links)
New Space is a phrase used to describe the expanding commercialization into the areas of space, for instance the Low Earth Orbit at approximately 500 km altitude. This is due to the decrease in cost as the satellites are becoming smaller and the transport vehicles cheaper. This reduction of cost provide the opportunity for industry and researchers tosend up customized equipment to orbit with standardized smaller satellites, such as the nanosatellites. Many parts of the nanosatellites system are commercially available but some subsystems are dependent on the situation. One of which is the satellite to satellite communication, referred to as Inter-Satellite Link (ISL). This thesis aims To evaluate the feasibility of asystem that allow for ISL capability and the basic operations of a satellite. Two hypothetical mission designs, Earth Observation and Global Coverage, were used to simulate the restrictions and requirements of the subsystems together with Commercial Of the Shelf (COTS) equipment to consider the satellite system as a whole. The major principles of the Radio Frequency (RF) communication system and their low level components are investigated and discussed. The scope of this thesis were to present and evaluate the high system level of the satellite. Thus the results and discussion describe a theoretical system performance that could be achieved with suggestions of low level components and system configuration. Besides from the communication subsystem this thesis also includes theory of mission design, the satellite subsystems and external interactions to describe how it all affects the design work of the communication system. Conclusion of this work offers a versatile preliminary system design that is theoretically capable of limited ISL communications. Furthermore this thesis include the fundamental principles of the satellite system that can be used for further work or alternative mission designs.
3

Reliable On Board Data Processing System for the ICEYE- 1 satellite

Korczyk, Jakub January 2016 (has links)
Recent development in electronics for mobile devices has led to the decrease in sizes and cost of autonomous complex embedded systems such as satellites. It is now possible to build a satellite quicker and only for a fraction of previous costs by using Commercial Off The Shelf (COTS) components. Yet, there are some obstacles that need to be overcome before a successful small satellite can be designed. Among these are the radiation environment, thermal issues, the overall system complexity and tight schedules. This thesis addresses these issues and proposes an overall approach for designing small satellites’ electronics. This approach can be summarised in 6 recommendations: Keep it simple Use fast hardware iterations Do not use space grade components Use a single string design on the system level (no redundancy) Design with limited trust in the software Use simple, accessible and easy updatable documentation With respect to those recommendations an on board data processing system, the Processing Board, has been designed for the ICEYE-1 satellite. The ICEYE-1 satellite is a fully commercial Synthetic Aperture Radar (SAR) satellite that will be launched in December 2017. The designed board has been manufactured and verified during airborne test campaigns. / Nya elektronikutvecklingar för mobiltelefoner har lett till en minskning av storlek och kostnader för andra autonoma komplexa inbyggda system som t.ex. satelliter. Så kallade småsatelliter kan numera byggas snabbare och för endast en bråkdel av tidigare kostnader med hjälp av Commercial Off The Shelf (COTS) komponenter. Det finns dock vissa hinder som måste övervinnas om man vill designa en pålitligt fungerande småsatellit. Till dessa kan räknas strålningsmiljön, väl fungerande värmeledning, det totala systemets komplexitet samt snäva tidtabeller. Detta examensarbete behandlar dessa frågor och föreslår en övergripande strategi för att designa elektronik för småsatelliter. Detta tillvägagångssätt kan sammanfattas i 6 rekommendationer: Håll det enkelt Implementera snabba hårdvaruiterationer Använd inte rymdklassade komponenter Använd ingen redundans på systemnivå Designa med en begränsad tilltro på mjukvaran Dokumentera på ett enkelt, tillgängligt och lätt uppdateringsbart sätt Dessa rekommendationer har använts till att utveckla ett databehandlingssystem, kallat "Processing Board", till småsatelliten ICEYE-1. ICEYE-1 är en kommersiell Synthetic Aperture Radar (SAR) satellit som kommer att skjutas i omloppsbana i december 2017. Databehandlingssystemet i fråga har utvecklats och verifierats i samband med flygplansburna testkampanjer.
4

Learning in New Space : Knowledge Sourcing for Innovation in Northern Swedish New Space Companies / Lärande i rymdindustrin : Kunskapskällor för innovation i nordsvenska rymdbolag

Filip Nikitas, Metallinos Log, Sandra Lipic, Persson January 2020 (has links)
The New Space industry is a novel branch of the space industry focusing on innovation and commercialization. It experiences very swift growth, although only a fraction of this growth has taken place in Sweden. In order to change this, policymakers are investing funds and efforts into developing the Swedish New Space industry, including the Kvarken Space Center project, aimed at developing the Northern Swedish New Space industry. Here, we see public support in developing a high-tech innovation ecosystem in a peripheral area. This is a topic offering multiple research streams on the most efficient development methods, two of which juxtapose the knowledge ecosystem and intercompany collaborations respectively. With that in mind, we formulated the following research question:   How are collaborations and the knowledge ecosystem used to source knowledge for the innovation process?   To approach to the subject, we gathered literature on innovation systems and ecosystems in order to analyze the importance of the knowledge ecosystem and the various shapes the industry can assume. This information is linked to theory on knowledge types and sourcing methods considering tacit and codified knowledge, which through different constellations form different needs of knowledge sources.   Our empirical approach investigated how the companies used different knowledge sources, namely collaborations, the knowledge ecosystem, and other sources, including networks, monitoring, and mobility. Thereafter, we considered the effects of outstanding factors, including funding and the peripheral region, on knowledge input in innovation.   We identified that companies in the upstream industry node, i.e. those related to launch activities and vehicles, and companies in the downstream node, i.e. those extracting data from space, both use engineering knowledge. Engineering knowledge requires both tacit and some codified knowledge, suggesting similar knowledge inputs for both nodes. However, different node traits lead to different inputs. Upstream companies see low degrees of knowledge transfer, especially from the knowledge ecosystem and from collaborations due to NDAs and intellectual property regards, and tacit knowledge input from external sources is particularly lacking.  Downstream actors see few constraints to using the investigated knowledge sources, although collaborations saw difficulties due to complexities in structuring them. However, many unilateral complementarities are seen from the knowledge ecosystem, leading to higher knowledge input particularly from networks, while also boosting collaborations to some extent. This was also partly observed in upstream companies. Thus, the knowledge ecosystem sees significant use, although much is indirect, while collaborations see less use.   Our main findings are that policymakers and the knowledge ecosystem should focus more on sources of tacit knowledge, such as students, while investing in network-boosting activities as industry events. Companies, especially upstream ones, should utilize collaborations more. Upstream companies should also utilize the local knowledge ecosystem more, as the rights to intellectual property produced by private actors in universities belong to the producer. Regarding future research, we warrant studies on knowledge sourcing in New Space companies and other knowledge sources, such as networks as a compensatory knowledge source.
5

Innovation in Swedish Space Industry : A case study on how to attract new actors in the space sector

Sakr, Mohamed, Åkesson, Martin January 2022 (has links)
Abstract Space has always pushed humanity further to acknowledge its existence and what was once mere speculation through observation, today we have reached a climax in fully understanding its reach and its potential for society. Through the utilization of technological advancements, people, countries, and organizations are starting to understand the capacity in utilizing our resources to create and develop fundamental applications that can create positive effects in our environment, society, and economy. The space industry is continuously evolving pushing forth a new age in space technology, a revolutionary space race. This transitory phase from old space and new space has furthered global competition and has created a new path for innovative practices that demand progression to remain sustainable and competitive in the present global environment. Which made us interested in exploring the following research question: How do new entrants in the high-technology space industry navigate the transition from old space to new space? Our thesis aims in understanding this transitory phase from old space and new space. To satisfactory answer our research question we selectively focus on Sweden’s space industry and its relative organizations and businesses. Through the evaluation of smalland medium sized organizations that exist in Sweden’s current space ecosystem, we aim to understand this evolutionary shift in innovative practices, collaborative efforts, and which factors contribute to increasing new entrants in what was once deemed a closed system. Therefore, fulfilling a research gap in academic literature by shedding light on new practices from a stakeholder’s perspective in the creation and diffusion of knowledge, networks, and motivational factors that form opportunities within existing platforms in the space industry that are essential and fundamental to the creation of progressive innovation ecosystems.  To conclude, this thesis contributes with an understanding of the historic, current and future possibilities for small and medium sized organisations within the space sector in Sweden. We explore the current ecosystem by interviewing SMEs that have embraced the opportunities that exist and with industry experts who have valuable insights to offer. We hope that with this thesis more individuals gain insight in the current restraints that new entrants are met with and how to effectively reduce those.  Key words: New space, Old space, Innovation, Ecosystem, Motivation, Platforms, Stakeholder, Opportunity forming / Business Administration
6

A feasibility study for a satellite VHF Data Exchange System (VDES) / En förstudie för ett satellit väldigt högfrekvent datautbytessystem (VDES)

Grujicic, Julian January 2019 (has links)
Transportation across the globe's oceans increases every year and is expected to keep increasing in the following decades. Consequently, there is a need to establish communication over the horizon through the Automatic Identification System (AIS) and the Very High Frequency (VHF) Data Exchange System (VDES), still in development, to track and communicate with vessels all over the globe regardless of the distance from shore. In this Master thesis a feasibility study for the development of a system that fulfils that need is proposed consisting of a Low Earth Orbit (LEO) constellation providing VDES communication continuously all over the globe. A system engineering approach has been followed, identifying stakeholders and producing system requirements setting up a framework for the system. The key stakeholders were found to be the customers/users, the satellite provider, the satellite operator, the service provider and the payload provider. Furthermore, possible use-cases were presented and a system architecture was defined to outline the system, dividing the system into three segments: the space segment, the ground segment and the launch segment. In addition, design proposals for a satellite constellation and a typical satellite in such a constellation were implemented. The satellite constellation was proposed to consist of 91 satellites at an orbit altitude of around 550 km in polar orbits of common inclination, this was regarding a minimum elevation angle of 10 degrees. The satellite is recommended to consist of a 6 U CubeSat using as payload the existing airborne transponder R5A from Saab TransponderTech, it builds on the Software Defined Radio (SDR) technology and is to be further developed for VDES applications. Moreover, a link- and a data budget were implemented. Different launch options were addressed concluding that launching as secondary payload on a ride-share mission or as primary payload on a small satellite launch vehicle are the preferable options. A market analysis has been made providing details on how many AIS/VDES satellites that have been launched into LEO and by which service provider, as well as further details on small/nano satellites of extra interest to this work. A short risk evaluation was also done, identifying the most evident risks with developing, operating and disposing the system. In addition, Saab's potential role in the development of satellite VDES is discussed.  In conclusion to this work it has been shown that it is possible to build a global continuous satellite constellation in LEO utilising as payload an SDR-platform to provide VDES services to vessels at open seas. / Transport globalt till havs ökar varje år och förväntas fortsätta att öka de följande årtiondena. Följaktligen finns ett behov av att etablera över horisonten kommunikation genom det automatiska identifieringssystemet (AIS) och det väldigt högfrekventa datautbytessystemet (VDES), under utveckling, för att spåra och kommunicera med fartyg över hela världen oberoende av avståndet från land. I detta examensarbete har en förstudie utförts för utvecklingen av ett system som uppfyller detta behov. Systemet föreslås bestå av en låg jordbana satellitkonstellation som kontinuerligt tillhandahåller VDES-kommunikation över hela världen. Ett systemtekniskt tillvägagångssätt har följts, intressenter har identifierats och utifrån dessa har systemkrav tagits fram. De viktigaste intressenterna befanns vara användare/kunder, satellitleverantören, satellitoperatören, tjänsteleverantören och nyttolastleverantören. Vidare lyftes olika möjliga användningsområden för systemet fram och en systemarkitektur framställdes vari systemet delades in i tre segment: rymdsegmentet, marksegmentet och uppskjutningssegmentet. Dessutom genomfördes designförslag för en satellitkonstellation samt en typisk satellit i en sådan konstellation. Satellitkonstellationen föreslogs bestå av 91 satelliter på en altitud på omkring 550 km i polära banor med gemensam inklination, detta var gällande för en minimum elevationsvinkel på 10 grader. Satelliten rekommenderades bestå av en 6 U CubeSat med den befintliga luftburna transpondern R5A från Saab TransponderTech som nyttolast, vilken bygger på mjukvaruradioteknik och är tänkt att vidareutvecklas för VDES-applikationer.  Vidare, implementerades en länk- och data budget. Olika uppskjutningsmöjligheter undersöktes, varav slutsatsen att uppskjutning som sekundär nyttolast på ett delningsuppdrag eller som primär nyttolast medhjälp av ett mindre uppskjutningsfordon anpassat för små satelliter var de föredragna alternativen. Även en marknadsanalys har genomförts, där det redogjorts för hur många AIS / VDES - satelliter som har uppskjutits i LEO och av vilken tjänsteleverantör, samt ytterligare detaljer om små / nano satelliter av extra intresse för arbetet. En kort riskbedömning har också gjorts, där de mest uppenbara riskerna med utveckling, drift och undanröjande av systemet identifierats. Dessutom diskuteras Saabs möjliga roll i utvecklingen av satellit VDES. Slutsatsen av detta arbete har visat att det är möjligt att bygga en global kontinuerlig satellitkonstellation i låg jordbana med en mjukvaruradio som nyttolast som tillhandahåller VDES-tjänster till fartyg på öppna hav.
7

Multifunkční kulturní centrum "Creative City" Brno / Multi-function Cultural Centre "Creative City" in Brno

Mazurová, Lenka January 2015 (has links)
The aim of the Master thesis project is a reconstruction of former prison in Soudní street in Brno. The current building is a historical construction from 18th century and contains chapel. This building has an extension, which closes the block from the Bratislavská street. The prison has square layout with two inside yards and one yards between prison and the extension. The design contains new usage of the current spaces with extension of new floors on the prison building, demolition of the current extension from the Cejl street and construction of new building on created new space. On the current building is designed two floor structure from the Soudní street, the rest of the building has one floor. New administrative construction is connected with the old building by a bridge. The main purpose of new creative centre are spaces for artists, painters, architects, alternative actors, newspaper publishers, starting businessmen and other functions that relates to operation of the building. Other functions are living, permanent and temporary, atelier for public and cooking institute.

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