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Morris, Neil Gerald. "Working memory constellations". Thesis, Durham University, 1986. http://etheses.dur.ac.uk/7057/.
Pełny tekst źródłaFerentinos, Andrew (Andrew George Phillip). "Constellations and anti-corridors". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/72812.
Pełny tekst źródłaPage 77 blank. Cataloged from PDF version of thesis.
Includes bibliographical references (p. 67-69).
To perceive the many stars in the sky, corridic logic would force one to view one star at a time, one after the other in a linear order. An anti-corridic logic, on the other hand, is non-linear and permits constellations to emerge: many stars can be perceived at once and the imagination can link them into any desired figure. The space of corridors is linear: rooms are perceived and passed in a fixed sequence of one space following another. The space of anti-corridors is non-linear: rooms are dispersed into a field. Many spaces can be perceived at once and one can pass through them in any order. Desired constellations can emerge. Airports and intermodal hubs typically follow corridic logic. An airport/intermodal hub that is anti-corridic disperses all spaces into a field of options whereby individuals with different itineraries can perceive and move through a field of spatial choices resulting in ideally perceived and desired spatial constellations. This thesis proposes a prototype for an anti-corridic airport/ intermodal hub.
by Andrew Ferentinos.
S.M.
Wood, Lloyd. "Internetworking with satellite constellations". Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/704760/.
Pełny tekst źródłaGalai, Yoav. "Transnational constellations of the past". Thesis, University of St Andrews, 2017. http://hdl.handle.net/10023/12200.
Pełny tekst źródłaHuckert, Chantal. "Constellations textiles : la leçon Maya". Paris, EHESS, 1992. http://www.theses.fr/1991EHES0319.
Pełny tekst źródłaThis work takes as its central objective the interpretation and analysis of mayan textiles figures (that is, representations of various patterns of textiles), of the classic epoch. Not having survived as actual fabrics, the textiles appear primarily in the form of monumental and ceramic representations. My interest is to know what are the function and the meaning of the textiles figures within the representation as a whole. Have selected examples which permit me to study the figures within an epigraphic context. The dissertation comprises six chapters which are organized according to the location and classification of the figures. Each chapter focuses on designs repeated in a specific pattern. In each one examine the case of the respective figures and the iconographic materials-stela, lintel, ceramic, which pertain to them. Analysed these representations as a plan, as a picture and as an object having historical significance. Consequently am able to read or reference the figures in terms of their relationship to the divines entities, toponymes and rituals, indicated in the iconography and epigraphy to which they correspond. In the conclusion of each chapter review the results of these specific studies and then outline what will constitute a lexicon of textiles figures. A comprehensive conclusion of the six chapters recommend the particular study of each site of provenance
Shah, Naresh Harkishan. "Automated station-keeping for satellite constellations". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10514.
Pełny tekst źródłaToh, Dorothy. "The changing constellations of audit quality". Thesis, London School of Economics and Political Science (University of London), 2016. http://etheses.lse.ac.uk/3426/.
Pełny tekst źródłaHanusse, Nicolas. "Cartes, constellations et groupes : questions algorithmiques". Bordeaux 1, 1997. http://www.theses.fr/1997BOR10646.
Pełny tekst źródłaBecker, Tanja. "Moduli spaces of (G,h)-constellations". Nantes, 2011. http://www.theses.fr/2011NANT2073.
Pełny tekst źródłaGiven a reductive group G acting on an a#ne scheme X over C and a Hilbert function h: IrrG ! N0, we construct the moduli space M#(X) of ##stable (G; h)#constellations on X, which is a common generalisation of the invariant Hilbert scheme after Alexeev and Brion [AB05] and the moduli space of ##stable G#constellations for #nite groups G introduced by Craw and Ishii [CI04]. Our construction of a morphism M#(X) ! X//G makes this moduli space a candidate for a resolution of singularities of the quotient X//G. Furthermore, we determine the invariant Hilbert scheme of the zero #bre of the moment map of an action of Sl2 on (C2)#6 as one of the #rst examples of invariant Hilbert schemes with multiplicities. While doing this, we present a general procedure for the realisation of such calculations. We also consider questions of smoothness and connectedness and thereby show that our Hilbert scheme gives a resolution of singularities of the symplectic reduction of the action
Becker, Tanja. "Espaces de modules de (G,h)-constellations". Phd thesis, Université de Nantes, 2011. http://tel.archives-ouvertes.fr/tel-00675853.
Pełny tekst źródłaSanzgiri, James Suneil. "Domesticating the ghost : constellations of Mexico, 1968". Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111271.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis. Page 96 blank.
Includes bibliographical references (pages 93-95).
Organized primarily as an essayistic method of investigation to accompany and supplement my thirty-minute short film AT THE TOP OF GRASSHOPPER'S HILL, this thesis traces minor encounters or discrepant engagements¹ between myself and and images of the 1968 state-sponsored student massacre in Mexico City. I adopt these engagements, most of which exist as encounters within state-sponsored institutions, to take 1968 and the Tlatelolco Massacre as a point of departure with which to navigate the density of such questions and problems as the production of collective memory, cultural heritage, disappearance, the archive, history and authority, and above all how power and knowledge function within a hegemonic terrain. Through an analysis of the many manifestations of images surrounding the 1968 student massacre, including Hollywood-esqe adaptations and 16mm documentation of the event by the military themselves, I explore the role representation plays in political struggles as well as its potential co-optation by the state. Such co-optation I argue, perpetuates cycles of oppression that maintain the status quo; and within Mexico specifically, the nearly ninety-year rule of the PRI party. At its essence, this thesis pries open the inconsistencies of such representations within Mexico, 1968 and its aftermath. These questions are sparked by my long term considerations of theorists such as Walter Benjamin, Paul Virilio, and Michel Foucault. I have found my investigations within Mexico indicative of their writings among a range of others that appear in this text. As such, this essayistic exploration stretches and drifts across many different disciplines, geographies, and figures. Thus, I develop a "constellatory framework" to expand an analysis of technologies of reproduction themselves towards their facility to impact national memory through circulation.
by James Suneil Sanzgiri.
S.M. in Art, Culture and Technology
Chatham, Rick 1962. "Constellations: For Wind Ensemble and Computer Music". Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc1038771/.
Pełny tekst źródłaWallbaum, Christopher. "Summary comparing normative constellations in music education". Georg Olms Verlag, 2018. https://slub.qucosa.de/id/qucosa%3A34646.
Pełny tekst źródłaMayr, Fabian Patrick. "Consciousising Relatedness. Systemic Conflict Transformation in Political Constellations". Doctoral thesis, Universitat Jaume I, 2010. http://hdl.handle.net/10803/669142.
Pełny tekst źródłaConflicts are. This seemingly incomplete sentence bears many insights for the study of conflicts and their transformation - the practise. A newer consciousness of conflicts perceives them not per se as something negative, timely limited and violent but as first of all relational, not to be immediately judged on, also positive, and only transformable. This is the notion of conflicts that will be underlying this work and as we find it in the contemporary conflict transformation discourse (e.g. Lederach, 2005, 2007a; Galtung, 2000; Senghaas, 2004; Wills and others, 2006). Thereby conflicts are ubiquitously present on at least four dimensions of our phenomenological Being (Heidegger, 1995): the intrapersonal, the interpersonal, the structural, and the cultural one (e.g. Lederach and Maiese, 2003; Galtung, 2003). Conflicts always have psychological and sociological elements which coexist and therefore have to be contemplated psychosocially of: How and who am I in social systems? Our Being is always bound to systems we are forming part of. We cannot not be in systems. As soon as human life is formed, as soon as we are in the world, is family; are parents and child (Mahr, 1996). Thereby our systemic Being is more between us than in us. The relationships we form and naturally have, shape us much more than what I am individually
Grandchamp, Enguerran. "Quelque contribution à l'optimisation de constellations de satellites". Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2001. http://tel.archives-ouvertes.fr/tel-00634769.
Pełny tekst źródłaKoo, Gregory Andre. "Signal constellations of a retrodirective array phase modulator". Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39612.
Pełny tekst źródłaWilkins, Matthew Paul. "The Flower Constellations - theory, design process, and applications". Texas A&M University, 2004. http://hdl.handle.net/1969.1/3053.
Pełny tekst źródłaMah, Edward. "Phase sweeping transmit diversity with fading resistant constellations". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0008/MQ34137.pdf.
Pełny tekst źródłaZaidan, Mahdi Yahya. "Trellis coded modulation with σ-tree signal constellations". Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/14984.
Pełny tekst źródłaBecker, Tanja [Verfasser]. "Moduli spaces of (G,h)-constellations / Tanja Becker". Mainz : Universitätsbibliothek Mainz, 2011. http://d-nb.info/103180112X/34.
Pełny tekst źródłaKwok, Kenneth C. H. (Kenneth Chun Hei) 1977. "Cost optimization and routing for satellite network constellations". Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8774.
Pełny tekst źródłaIncludes bibliographical references (p. 140-142).
Low-earth orbit (LEO) satellite communications systems have been under rapid development in the past few years as it is predicted that they will become part of the Next Generation Internet (NGI), a global heterogeneous network that provides ubiquitous access to every part of the world. Nevertheless, very little research has been done on the cost aspect of a satellite network. In this thesis, uplink and downlink costs are ignored and a cost equation based solely on crosslinks is developed and studied closely together with a seamless constellation model. Using this cost equation, cost optimization is performed in LEO and GEO satellite systems to find the optimum constellation size with respect to the amount of uniform traffic present. Modifications of the constellations, such as the 3-crosslink-per-node mesh network, and the 1-inter-plane-crosslink mesh network, are introduced in an attempt to further reduce the cost of the system. Interaction of hotspot traffic with uniform traffic in a square mesh is also studied. We are able to find a lower bound and an upper bound of the minimum required crosslink capacity, given a stream of uniform traffic and multiple streams of hot spot traffic. We also find the properties of hot spot traffic in an infinite grid and extend the result to a fixed size grid. Finally, the notion of incorporating the satellite network into the global heterogeneous network is explored. The relationship between the satellite network and the terrestrial network is studied. In particular, the assignment of cost metrics to inter-satellite links, uplinks and downlinks, and terrestrial links is investigated. At the end a basic simulation of the traffic in a heterogeneous network is developed in MATLAB, which can be used to study the transient properties of the network.
by Kenneth C.H. Kwok.
S.M.
Twohig, Niall Ivan. "Revolutionary Constellations| Seeing Revolution Beyond the Dominant Frames". Thesis, University of California, San Diego, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10161871.
Pełny tekst źródłaThe dissertation looks beyond the dominant frames of Western epistemology and philosophy that largely determine the ways revolution and revolutionaries are conceptualized and remembered in modern society. Rather than focusing on historically grounded political projects that conform to a particular revolutionary doctrine, our focus will be on common people whose praxis posed, and still poses, an alternative to a social order premised on the separation and stratification of the commons and its people. The revolutionaries we will meet in these pages see through what we will unravel as the myth of separateness. They see through a mythic reality that veils people’s interconnections with each other, with the commons, and with the cosmos from which all life emerges. Their praxis touches this deeper reality.
To ground our discussion, we will look deeply at three flashpoints of revolt against the myth as it manifested itself in the liberal capitalist regimes of the 19th and 20th centuries: The Paris Commune of 1871, the student protests of 1968 in Paris and Mexico, and a self-immolation in protest of the Vietnam War that occurred in 1970. We will thread these flashpoints together to see how, despite the distance that separates these revolts in time and space, they illuminate an alternative way of being that stands in contrast to the atomized, competitive, and militant existence that is formed in the crucible of liberal capitalist empire. Threading these flashpoints together, we will begin to reconceptualize what is meant by success and failure, beginnings and endings. Though these revolts may end with defeat and death, the way of being that they touched continues on past their historical or biographical endpoint. Like the light from a dead star or from an extinguished candle, their revolution travels across space and across time waiting for the right conditions to manifest itself again in renewed praxis. Cultural production, particularly art and literature, will serve as our vehicle for illuminating this revolution and its continuations.
Grandchamp, Enguerran. "Quelques contributions pour l'optimisation de constellations de satellites". Toulouse, INPT, 2001. http://www.theses.fr/2001INPT045H.
Pełny tekst źródłaBergé, Aline. "Philippe Jaccottet, trajectoires et constellations : lieux, livres, paysages /". Lausanne : Éd. Payot Lausanne, 2004. http://catalogue.bnf.fr/ark:/12148/cb39953489m.
Pełny tekst źródłaHolden, Bobby Glenn II. "Onboard distributed replanning for crosslinked small satellite constellations". Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122513.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 81-85).
This work implements distributed onboard planning and scheduling approach for crosslinked small satellites Earth observation missions. The example cases used involve 65 small satellites in ISS and Sun Synchronous Orbits, as well as NASA's Near Earth Network groundstations, and three target cases. Target cases include urgent observations. This work focuses on handling dynamic modifications to an existing nominal plan. The disruptions considered include failures to complete an activity and new user requests. The Scheduling Planning Routing Intersatellite Networking Tool, or SPRINT, is the infrastructure used in this work. SPRINT's global planner advances the state of the art by addressing the combinatorially expensive crosslink routing planning challenges, given the constraints of small satellites. SPRINT's distributed onboard planner, the focus of this work, manages both proactive state sharing and reactive planning activities. By introducing robust onboard planning components, high-performance schedules are enabled. An atmospheric model is integrated to provide the SPRINT scenarios. Results are presented for performance of the onboard replanning system. Given arbitrary activity failures, improvement, by means of reduction of the penalty, of 6 to 10 times the unmitigated effects are demonstrated using the onboard planning approach. A path to flight software integration is developed.
NASA Small Spacecraft Technology Program (SSTP)Grant/ Cooperative Agreement Number 80NSSC18M0042
by Bobby Glenn Holden II.
S.M.
S.M. Massachusetts Institute of Technology, Department of Aeronautics and Astronautics
Browning, Helen. "Producing constellations : opening new documentary to rhizome theory". Thesis, Queensland University of Technology, 2004. https://eprints.qut.edu.au/15944/1/Helen_Browning_Thesis.pdf.
Pełny tekst źródłaBrowning, Helen. "Producing Constellations : Opening New Documentary To Rhizome Theory". Queensland University of Technology, 2004. http://eprints.qut.edu.au/15944/.
Pełny tekst źródłaDhaou, Riadh. "Modélisation de réseaux composés de constellations de satellites". Paris 6, 2002. http://www.theses.fr/2002PA066405.
Pełny tekst źródłaBoukhatem, Lila. "Le handover dans les constellations de satellites LEO". Paris 6, 2001. http://www.theses.fr/2001PA066501.
Pełny tekst źródłaBasil, Peter G. "Real-time multi-frequency modulation using differentially-encoded signal constellations". Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA236839.
Pełny tekst źródłaThesis Advisor(s): Moose, P. H. Second Reader: Terman, F. W. "June 1990." Description based on title screen as viewed on October 19, 2009. DTIC Descriptor(s): Signal processing, input, control, industries, real time, computers, signal to noise ratio, rates, coding, receivers, errors, data acquisition, vector analysis, throughput, microcomputers, data rate, modulation, data processing equipment, decoding, plug in units, frequency DTIC Indicator(s): Packet communications, frequency modulation, program listings, signal to noise ratio. Author(s) subject terms: MFM, Differential encoding, D16QAM Includes bibliographical references (p. 68). Also available in print.
Sanders, Devon Stetson. "Study of Lunar Constellations for Situational Awareness and Surveillance". MSSTATE, 2006. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11072006-111530/.
Pełny tekst źródłaKitchens, John David Stone Lynda. "Orientation and education critical constellations in the new millennium /". Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,1130.
Pełny tekst źródłaTitle from electronic title page (viewed Mar. 27, 2008). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the School of Education Culture, Curriculum, and Change." Discipline: Education; Department/School: Education.
Pressley, Daniel Lawrence. "Constellations : authorship and authority in Franz Kafka’s short prose". Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/877/.
Pełny tekst źródłaRitchey, Kathleen M. "Women with a history of incest : MMPI profile constellations". Virtual Press, 1991. http://liblink.bsu.edu/uhtbin/catkey/776710.
Pełny tekst źródłaDepartment of Counseling Psychology and Guidance Services
Gillis, A. A. "Awakening constellations : history in Irish poetry of the 1930s". Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390887.
Pełny tekst źródłaThompson, Zoë. "Urban constellations : reading contemporary cityscapes with Benjamin and Baudrillard". Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/1188/.
Pełny tekst źródłaMarinan, Anne Dorothy. "From CubeSats to constellations : systems design and performance analysis". Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85807.
Pełny tekst źródłaCataloged from PDF version of thesis. "September 2013."
Includes bibliographical references (pages 87-91).
The primary purpose of an Earth observing spacecraft constellation is to obtain global measurements with improved spatial and temporal resolution. The small size, low cost, standardized form factor, and increasing availability of commercial parts for CubeSats make them ideal for use in constellations. In this work, we provide an in-depth analysis of how to evolve from a single Earth-observing CubeSat to an effective CubeSat constellation. We first consider pointing capability provided by three different CubeSat attitude determination and control system (ADCS) architectures to an Earth-observing payload. Our approach of performing a comprehensive orbital altitude and inclination reference point analysis for all subsystems allows us not only to evaluate trades between subsystems when designing a CubeSat that may be manifest in any low-Earth orbit, but the reference point analysis also provides a database of impacts that the orbital parameters have on subsystems and performance for designing a constellation. Next, we consider the practical challenge of trying to launch and distribute a CubeSat constellation into a specific configuration. We suggest a cost-effective way to launch a constellation of CubeSats via consecutive secondary payload launch opportunities.
by Anne Dorothy Marinan.
S.M.
Hein, Ayesha Georgina (Ayesha Georgina Iwalanai). "A systems analysis of CubeSat constellations with distributed sensors". Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112464.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 95-103).
This thesis explores the use of CubeSat constellations as "gap fillers" and supplements to traditionally complex, multi-sensored satellites, increasing resiliency of the system at very low cost. In standard satellite acquisitions, satellites can take years and billions of dollars to reach operational status. Should there be delays in schedule or on-orbit failures, gaps in data integral to US operations can be lost. CubeSats present a low cost temporary solution. In this thesis, the weather sensing satellite, JPSS-1, is used as a reference case for a traditional multi-sensored satellite. The sensors from JPSS-1 are paired with state-of-the-art CubeSat sensors of similar functions. These CubeSats are used to make up three different constellation architectures which are examined for the revisit times and coverage they offer. These architectures are based on some of the common methods of launching and implementing a CubeSat constellation, a single mass launch, a series of available launches, and a planned configuration. This analysis shows that in some areas, like radiometry, CubeSat sensors are comparable with operational heritage sensors. In the other cases, like optical imaging and hyperspectral imagers, CubeSats have not yet advanced enough or cannot be advanced much more based on the limitations of their size and power. A practical use of a CubeSat constellation is to supplement and augment a traditional system, increasing the overall redundancy and providing data over larger geographic regions and with lower revisit times for a approximately 4.5% of the cost of a traditional satellite.
by Ayesha Georgina Hein.
S.M.
Legge, Robert S. Jr. "Optimization and valuation of recongurable satellite constellations under uncertainty/". Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/97261.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 303-320).
Space-based persistent surveillance provides decision makers with information necessary to effectively respond to both natural and man-made crises. This thesis investigates a reconfigurable constellation strategy that utilizes on-demand, maneuverable satellites to provide focused regional coverage with short revisit times at greatly decreased cost when compared to traditional static satellite constellations. The thesis develops and demonstrates a general framework to guide the design and optimization of recongurable satellite constellations specifically tailored to stakeholder objectives while considering requirement uncertainty. The framework is novel in that it avoids many of the assumptions and simplifications of past research by: 1. explicitly considering uncertainty in future operating conditions; 2. concurrently optimizing constellation pattern design, satellite design, and operations design; and, 3. investigating layered and asymmetric patterns. The framework consists of three elements: a detailed simulation model to compute constellation performance and cost for a variety of architectures and patterns, Monte Carlo simulation to determine how well each design performs under uncertain future conditions, and a parallel multi-objective evolutionary algorithm developed from the [epsilon]-NSGA-II genetic algorithm to nd designs that maximize performance while simultaneously minimizing cost. Additionally, a new performance metric is developed to measure directly how well a design meets desired temporal and spatial sampling requirements and a decision model and optimal assignment process is developed to determine how to employ the option of reconfigurability to respond to specific regional events. The framework was used to perform 85 optimization runs selected to compare the cost-effectiveness of several constellation architectures over varied operating conditions and coverage requirements. All optimization runs were performed in less than three months, demonstrating that parallel computing coupled with sophisticated optimization routines enable rapid spiral development of satellite constellations. Results show that recongurable constellations cost 20 to 70% less than similarly performing static constellations for the scenarios studied. The cost savings grows with increasingly demanding coverage requirements. Results from optimizing a fully asymmetric constellation pattern led to two the development of new 'quasi'-asymmetric patterns that were found to significantly outperform symmetric patterns for providing discontinuous coverage. Additionally, results show that the sun-synchronous and rapid launch architectures are the least cost-eective approaches.
by Robert Scott Legge Jr.
Ph. D.
Kennedy, Andrew Kitrell. "Planning and scheduling for earth-observing small satellite constellations". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120415.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 225-235).
The growth of Earth-observing small satellite constellations requires effective, automated operations management. State-of-the-art techniques must be improved to manage scheduling of observation data collection, data routing through a crosslinked constellation network, and maintenance of limited onboard resources, as well as to enable scaling to hundreds of satellites. This work has four primary contributions. The first is the development of a hierarchical smallsat constellation planning and scheduling system that addresses data routing and resource management. A centralized ground-based algorithm, the Global Planner, manages the whole constellation, while an onboard algorithm, the Local Planner, replans in real-time to handle urgent, unexpected observations. The second contribution is the development of the software infrastructure for simulating the constellation with high fidelity. The third is the analysis of system performance with a set of representative orbit geometries, ground station networks, and communications contexts. The fourth is the demonstration of routing of urgent observation data. The Global Planner algorithm demonstrates execution on larger problem sizes than the state-of-the-art, by quickly executing for both long planning horizons (requiring < 1 minute for a 1000 min. horizon) and many satellites (< 30 mins for 100 sats). Representative constellation geometries are simulated and analyzed with a 6U CubeSat bus model, including a 10-sat Sun-synchronous Orbit Ring and a 30-sat Walker Delta constellation. The improvement using crosslinks in addition to downlinks is assessed over a set of metrics including observation data throughput, latency of data delivery to ground, average Age of Information (freshness) of observation data, and freshness of TT&C data. In every case, performance is found to improve when using crosslinks and downlinks versus only using downlinks. Unplanned, urgent observation data is routed effectively by the Local Planner, achieving comparable latency performance with regular observation data (median of 42 minutes versus 38 mins) in a 6-sat simulation. This work enables efficient scheduling of operations for large, complex smallsat constellations. Future work is discussed that promises further scalability and schedule quality increases from the algorithm architecture presented.
by Andrew Kitrell Kennedy.
Ph. D. in Space Systems
Wallace, Scott Thomas. "Parallel orbit propagation and the analysis of satellite constellations". Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/46444.
Pełny tekst źródłaSoares, Diogo Lopes. "Design of multidimensional compact constellations with high power efficiency". Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/11111.
Pełny tekst źródłaPahwa, Samir. "The theory of simultaneous lifting : constellations in conflict hypergraphs". Thesis, Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/2317.
Pełny tekst źródłaDalla, Costa Murilo José Farias. "Significações mortuárias da série Les constellations de Joan Miró". reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/100639.
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Não há estudos aprofundados sobre a série Constelações (1940-1941) de Joan Miró (1893-1983). O caráter hermético das pinturas pode ser considerado uma das causas do silêncio crítico sobre a série. Nesta investigação, propomos a hipótese, a partir da análise dos documentos disponíveis, de que a dispersão da série depois de sua chegada aos Estados Unidos em meados da década de 1940 prejudicou a recepção das Constelações, pois, segundo a idéia inicial de Miró, a série de pinturas deveria ter sido integralmente adquirida pelo Museum of Modern Art (MoMA), o que garantiria a sua exposição de maneira permanente na sede da prestigiosa instituição de Nova York. A investigação também sugere que o Guernica de Pablo Picasso tenha sido uma das motivações secretas das Constelações, idealizadas por Miró como uma alternativa estética ao tratamento do tema da guerra na Arte, epitomado pelo célebre painel de Picasso. Le bel oiseau déchiffrant l'inconnu au couple d'amoureux, o vigésimo quadro da série, destaca-se dos demais por apresentar características peculiares à série, que permitem a identificação de temas e personagens do imaginário do artista, constituindo uma chave de acesso ao significado oculto das Constelações de Joan Miró e suas relações com a Cabala hebraica.
Abstract : There are no detailed studies about the Constellations series (1940-1941) by Catalan artist Joan Miró (1893-1983). The hermetic character of the paintings can be considered one of the causes of the critical silence about the series. In this research, we propose the hypothesis that the dispersion of the series after its arrival to the United States in the mid-1940s hampered the appraisal of the Constellations by critics and public, inasmuch as the initial idea of Miró was taht the series should have been fully acquired by the Museum of Modern Art (MoMA), which would had ensured its permanent display at the prestigious institution in New York. The research suggests that the Guernica by Pablo Picasso could be considered one of the secret motivations of Constellations, devised by Miró as an alternative to the aesthetic treatment of the theme of war in the Arts, epitomized by the celebrated panel by Picasso. Le bel l'oiseau déchiffrant l'inconnu au couple d'amoureux, the twentieth painting of the series, stands out from the others pictures of the suite by presenting peculiar features that enables the identification of themes and characters of the imagery of the artist, providing a key access to the hidden meaning of the Constellations of Joan Miró and its ignored relation with the Hebrew Kabbalah.
Contreras-Koterbay, Scott, i Łukasz Mirocha. "The New Aesthetic and Art: Constellations of the Postdigital". Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu_books/112.
Pełny tekst źródłahttps://dc.etsu.edu/etsu_books/1118/thumbnail.jpg
Leber, Deanne. "Constellations – a space in time that’s filled with moving". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2016. https://ro.ecu.edu.au/theses/1810.
Pełny tekst źródłaZANETTE, LUCA. "Communication Networks in CubeSat Constellations: Analysis, Design and Implementation". Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2704132.
Pełny tekst źródłaLöf, Emma, i Malin Löf. "The Relations between Gender Roles, Sibling Constellations, and Modern Sexism". Thesis, Örebro universitet, Institutionen för juridik, psykologi och socialt arbete, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-65469.
Pełny tekst źródłaI denna studie undersökte vi relationen mellan könsroller, syskon och sexism. Vi ville veta om pojkar som spenderade mer tid med sina systrar var mindre sexistiska än dem som inte gjorde det. En annan fråga vi undersökte var om flickor som identifierade sig med sin traditionella könsroll var mer sexistiska än dem som inte gjorde det. Vårt urval bestod av 127 gymnasieelever i åldrarna 15 till 19 år. Resultaten visade att tid spenderad med systrar inte var signifikant korrelerat med sexism bland pojkar. Däremot var pojkar mer sexistiska än flickor. Flickor som identifierade sig med sin traditionella könsroll var mindre sexistiska än de som inte gjorde det. En annan viktig upptäckt var att pojkar som inte identifierade sig med den feminina könsrollen var mer sexistiska än de som gjorde det. Sammanfattningsvis, kontakt med systrar hade ingen relation till pojkars sexism. Däremot, hade kön och könsroller det. Oväntade resultat visade betydelsen av den feminina könsrollen där pojkar som inte identifierade sig med den feminina könsrollens egenskaper visade högre tendenser till sexism, medan flickor som identifierade sig med dessa egenskaper visade mindre tendenser till sexism.
Santos, Michel. "Improving the coverage of earth targets by maneuvering satellite constellations". College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7328.
Pełny tekst źródłaThesis research directed by: Aerospace Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Paek, Sung Wook. "Reconfigurable satellite constellations for geo-spatially adaptive Earth observation missions". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76106.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 145-151).
Continuously increasing demand for Earth observation in atmospheric research, disaster monitoring, and intelligence, surveillance and reconnaissance (ISR) has been met by responsive architectures such as unmanned aerial systems (UAS) or artificial satellites. Space-based architectures can provide non-dominated design solutions on the utility-cost curve compared to alternate architectures through the use of two approaches: (1) reducing satellite manufacturing and launch costs and (2) introducing reconfigurability to the satellite constellations. Reconfigurable constellations (ReCons) enable fast responses to access targets of interest while providing global monitoring capability from space. The wide-area coverage and fast responses provided ReCon can complement high-resolution imagery provided by UAS. A newly proposed ReCon framework improves the model fidelity of previous approaches by utilizing Satellite Tool Kit (STK) simulations and Earth observation mission databases. This thesis investigates the design and optimization of ReCon in low Earth orbits. A multidisciplinary simulation model is developed, to which optimization techniques are applied for both single-objective and multi-objective problems. In addition to the optimized baseline ReCon design, its variants are also considered as case studies. Future work will potentially co-optimize ReCon and UAS-like systems.
by Sung Wook Paek.
S.M.