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Cook, Jordan Ellington. "Space, Time, and the Self in 20th Century Literature". University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1525456817163611.
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Anderson, Adam L. "Unitary space-time transmit diversity for multiple antenna self-interference suppression /". Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd500.pdf.
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Anderson, Adam Lane. "Unitary Space-Time Transmit Diversity for Multiple Antenna Self-Interference Suppression". BYU ScholarsArchive, 2004. https://scholarsarchive.byu.edu/etd/154.
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A common practice for government defense agencies and commercial aeronautical companies is to use dual antennas on test flight air vehicles in order to overcome occlusion issues during high-speed telemetric maneuvers. The dual antennas, though never being masked at the same time, unfortunately lead to a drastic increase in nulls in the signal pattern. The result of this interference pattern can be compared to the effect of fading in a multiple-input multiple-output (MIMO) multi-path scattering environment. Confidence in this comparison leads to the use of unitary space-time MIMO codes to overcome the signal self-interference. The possibility and performance of several of these codes will be examined. Such criteria as training for channel estimation, use of shaped offset quadrature phase shift keying (SOQPSK), hardware facility, and data throughput will be compared for each code. A realistic telemetry channel will be derived to increase accuracy of simulated results and conclusions.
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Hauck, Bernd [Verfasser], i Volker [Akademischer Betreuer] Turau. "Time- and space-efficient self-stabilizing algorithms / Bernd Hauck. Betreuer: Volker Turau". Hamburg-Harburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2013. http://d-nb.info/1048573680/34.
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Grewal, Inderraj Singh. "Self-customized electronic procedures for Just In Time training of space telerobotics". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120436.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2018.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 97-99).
Astronauts on Long Duration Missions (LDMs) will face complex problems for which they are untrained. Rehearsal may be unfeasible; the task need be completed on the first attempt and preparation is limited to a review of the electronic procedures (EPs). This motivates Just-In-Time Training (JITT): Astronauts learn- generic skills and EPs recombine these skills to train the new task immediately prior to execution. EPs typically have a fixed level of depth of detail, which ignores individual astronaut competence and the task's hierarchical step/sub-step structure. One astronaut may need details for all sub-steps, whereas another may simply refer to the highest level steps. By varying depth of detail, an astronaut may be able to customize the EPs to aid task performance by reducing extraneous cognitive load and focusing attention to salient features. The question is whether this approach reduces errors when a space telerobotics task is performed for the first time. To answer this, an experiment was carried out over two days on a desktop robotics simulator. On Day 1, all subjects (n=14) were trained to criterion on robotics skills, and were required to pass a screening assessment for continued participation in the experiment. On Day 2, JITT was given as a 30 minute period for procedure review before performing the task. Control group subjects were given non-alterable procedures, while the treatment group was able to customize. Customized JITT led to a lower error count (Mcontroi = 26.3, Mtreatment = 4.6, p = 0.023, mixed regression), and greater accuracy in adhering to the procedures (Mcontro = 82%, Mtreatment = 91%, p = 0.067, Welch's two-sample t-test, SDcontroi = 11%, SDtreatment = 3.6%, p = 0.014, f-test). Despite attempts to balance subject proficiency between groups, the treatment group was noted to exhibit a lower error rate during Day 1 training. So, while these results support the perspective that customization reduced extraneous cognitive load, there remains a potential confound of unbalanced groups. This experiment will help inform NASA training protocols for LDMs.
Supported by a National Space Biomedical Research Institute grant Customized Refresher and Just-in-Time Training for Long-Duration Spaceflight Crews (NCC958HFP03801)
by Inderraj Singh Grewal.
S.M.
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Eftekharzadeh, Ardeshir. "Self-force and noise-kernel in curved space-time using quasi-local expansion methods". College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/6852.
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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.Thesis research directed by: Physics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Schmidt, Christopher Michael, i n/a. "Being, Becoming and Belonging: The Phenomenological Essence of Spiritual Leisure Experiences". Griffith University. Department of Tourism, Leisure, Hotel and Sport Management, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060717.160259.
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This study reports on an investigation into individuals experiences of spiritual leisure. Though there is a range of literature and research that examines the independent concepts of leisure and spirituality, there continues to be a lack of empirical research into the existence and experience of leisure that may be spiritual. Given that both traditional and ongoing understandings of leisure emphasise their impact on the whole of the person, this lack of attention to the spiritual dimension creates a gap in our understanding. Leisure is increasingly seen as having a role to play in human well-being. What is less well known is the role and place of spirituality in that interplay. It is recognised that a sense of spirituality can be accessed in a diversity of ways, through, for example prayer, meditation and an engagement with sacred places. The spiritual forum of leisure however, remains less acknowledged and understood despite the fact that spiritual benefits have been identified as part of leisure participation. The purpose of this study was to develop insight into the existence and nature of this relationship by exploring the phenomenon of spiritual leisure experiences. As a primary research focus, this topic is rarely directly considered. Rather it is most often raised as an anecdotal benefit of leisure, a philosophical potential for leisure, or more recently, a component of peoples spiritual and general well-being. Based on personal interest, informed by intuition and grounded in the theoretical and philosophical concepts of leisure and spirituality, this study sought to fill some gaps in our understandings of spiritual leisure experiences. Using a phenomenological approach, this descriptive, qualitative study aimed to explore the subjective meanings individuals give to experiences they refer to as spiritual leisure. Thus, 24 co-researchers were invited to share their self-defined spiritual leisure experiences, through open, unstructured interviews and reflective journaling. The leisure experiences the co-researchers described as spiritual occurred within various locations and involved multiple contexts. These included social and solo experiences, nature based or urban environments and active or passive pursuits. Reflective of what happened, the descriptions of the co-researchers revealed that spiritual leisure experiences could vary in situation, conditions, activity and contexts. The meanings behind these descriptions were also sought and three groupings of common themes were recognised: namely triggers; responses and outcomes. These structural components of spiritual leisure were interrelated in the co-researchers conscious understandings and represented a suite of feelings, thoughts, sensations and meanings embedded in the context, actions and locations of their leisure. Finally, the research included an exploration of the underlying essences of the experiences. Five interrelated essences of spiritual leisure emerged representing the phenomenon of spiritual leisure. These were: experiencing self; time and space for self; being; becoming; and belonging. Overall, the results demonstrated that experiences of leisure that were spiritual were evident for the 24 co-researchers. The experience of spiritual leisure was understood as an event that was lived physically, emotionally and affectively and while it varied in context it also shared the characteristics of providing a forum for knowing, being and becoming more of the self. In spiritual leisure, individuals found a life-space in which to discover and know aspects of themselves and to feel a sense of belonging. This study clearly identifies leisure as a valuable and edifying aspect of some peoples lives in relation to developing their spiritual self or for experiencing their spirituality. The essential themes remind us of the true potential leisure can have in peoples lives. More broadly, the study acknowledges the nature of spiritual leisure, its structural components and the value of studying the phenomenon from the perspective of the experiencing person.
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Schmidt, Christopher Michael. "Being, Becoming and Belonging: The Phenomenological Essence of Spiritual Leisure Experiences". Thesis, Griffith University, 2005. http://hdl.handle.net/10072/367930.
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This study reports on an investigation into individuals’ experiences of spiritual leisure. Though there is a range of literature and research that examines the independent concepts of leisure and spirituality, there continues to be a lack of empirical research into the existence and experience of leisure that may be spiritual. Given that both traditional and ongoing understandings of leisure emphasise their impact on the whole of the person, this lack of attention to the spiritual dimension creates a gap in our understanding. Leisure is increasingly seen as having a role to play in human well-being. What is less well known is the role and place of spirituality in that interplay. It is recognised that a sense of spirituality can be accessed in a diversity of ways, through, for example prayer, meditation and an engagement with sacred places. The spiritual forum of leisure however, remains less acknowledged and understood despite the fact that spiritual benefits have been identified as part of leisure participation. The purpose of this study was to develop insight into the existence and nature of this relationship by exploring the phenomenon of spiritual leisure experiences. As a primary research focus, this topic is rarely directly considered. Rather it is most often raised as an anecdotal benefit of leisure, a philosophical potential for leisure, or more recently, a component of people’s spiritual and general well-being. Based on personal interest, informed by intuition and grounded in the theoretical and philosophical concepts of leisure and spirituality, this study sought to fill some gaps in our understandings of spiritual leisure experiences. Using a phenomenological approach, this descriptive, qualitative study aimed to explore the subjective meanings individuals give to experiences they refer to as spiritual leisure. Thus, 24 co-researchers were invited to share their self-defined spiritual leisure experiences, through open, unstructured interviews and reflective journaling. The leisure experiences the co-researchers described as spiritual occurred within various locations and involved multiple contexts. These included social and solo experiences, nature based or urban environments and active or passive pursuits. Reflective of what happened, the descriptions of the co-researchers revealed that spiritual leisure experiences could vary in situation, conditions, activity and contexts. The meanings behind these descriptions were also sought and three groupings of common themes were recognised: namely triggers; responses and outcomes. These structural components of spiritual leisure were interrelated in the co-researchers conscious understandings and represented a suite of feelings, thoughts, sensations and meanings embedded in the context, actions and locations of their leisure. Finally, the research included an exploration of the underlying essences of the experiences. Five interrelated essences of spiritual leisure emerged representing the phenomenon of spiritual leisure. These were: experiencing self; time and space for self; being; becoming; and belonging. Overall, the results demonstrated that experiences of leisure that were spiritual were evident for the 24 co-researchers. The experience of spiritual leisure was understood as an event that was lived physically, emotionally and affectively and while it varied in context it also shared the characteristics of providing a forum for knowing, being and becoming more of the self. In spiritual leisure, individuals found a life-space in which to discover and know aspects of themselves and to feel a sense of belonging. This study clearly identifies leisure as a valuable and edifying aspect of some people’s lives in relation to developing their spiritual self or for experiencing their spirituality. The essential themes remind us of the true potential leisure can have in people’s lives. More broadly, the study acknowledges the nature of spiritual leisure, its structural components and the value of studying the phenomenon from the perspective of the experiencing person.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Department of Tourism, Leisure, Hotel and Sport Management
Full Text
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Weathersby, Jessica. "Pyxidis echo lacuna". Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2904.
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Thesis (M.F.A.)--West Virginia University, 2003.Title from document title page. Document formatted into pages; contains iv, 17 p. : col. ill. Vita. Includes abstract. Includes bibliographical references (p. 15).
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O'Connor, Melissa Lunsman. "How does Mobility Change over Time for Older Adults, and How are Changes Influenced by Cognitive Functioning?" Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1728.
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Mobility, which includes life space and driving behaviors, is an important functional domain for older adults (e.g., Webber, Porter, & Menec, in press). Low mobility is associated with sensory, physical, and cognitive deficits (e.g., Anstey, Wood, Lord, & Walker, 2005). However, few studies have investigated how mobility changes over time. This dissertation contains three longitudinal articles that explored mobility changes, with an emphasis on driving and cognition, among community-dwelling older adults.
The first paper investigated patterns of driving self-regulation (i.e., adjustment of driving behaviors) among control-group participants from the Advanced Cognitive Training for Independent and Vital Elderly (ACTIVE) study (N=548). Self-regulation was defined by driving space, frequency, and perceived difficulty. Growth mixture models revealed one subgroup of drivers ("Decreasers") that showed declines in their driving, and two subgroups that were stable over time. Relative to the stable groups, Decreasers showed significantly more depressive symptoms and lower reasoning, speed of processing (Useful Field of View Test [UFOV]), self-rated health, balance, and everyday functioning at baseline.
The second paper examined mobility changes in ACTIVE participants with psychometrically defined mild cognitive impairment (MCI; N=304). Group differences in life space and driving (space, frequency, and difficulty) were evaluated using random effects models, which were adjusted for baseline demographics, health, depression, balance, attrition, and cognitive training participation. Relative to normal participants, participants with MCI showed reduced baseline mobility for all outcomes, as well as faster rates of decline for driving frequency and difficulty.
Finally, the third paper examined three-year changes in mobility for control-group participants in the Staying Keen in Later Life (SKILL) study (N=370). Outcomes were life space and driving (space, frequency, and difficulty). Latent change models revealed significant correlations between: changes in life space and age; changes in driving frequency and complex reaction time (Road Sign Test); and changes in driving difficulty and age, gender, mental status, and complex reaction time (Road Sign Test). Taken together, the articles in this dissertation show that older adults exhibit distinct patterns of mobility over time, and that demographic, health, and cognitive factors are associated with these patterns.
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Grönlund, Arthur, i Christos Tolis. "Riderless self-balancing bicycle : Derivation and implementation of a time variantlinearized state space model for balancing a bicycle in motion by turning the front wheel". Thesis, KTH, Maskinkonstruktion (Inst.), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230169.
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Självkörande fordon börjar bli en allt större verklighet isamhället, där bussar och bilar snart kan komma att implementeraspå större skala. Självkörande tvåhjuliga fordonkan vara en möjlig lösning på mindre fordon i städer därutrymme blir mer och mer sparsamt.Syftet med detta projekt har varit att ta fram och implementeraen linjäriserad tidsvarierande tillståndsmodell förbalansreglering av en elcykel genom vridning av framhjulet.För att testa modellen konstruerades en liten demonstratormed vilken experiment och tester utfördes.Den slutsats som drogs var att modellen mycket väl skullekunna vara en lösning för balansering av en elcykel, menatt fortsatta undersökningar bör genomföras på en större skala för att en mer definitiv slutsats skall kunna dras.Self-driving vehicles are becoming more and more prevalentin society, with buses and cars close to being implementedin the public domain. Self-driving two-wheeled vehiclescould be a solution for space-efficient transportationin cities, where space is becoming a larger issue.The purpose of this project was to develop and implement alinearized time variant state space model for balancing sucha two-wheeled vehicle in the form of a bicycle by turningits front wheel. To test the derived model a small demonstratorwas built and experimented with.The final conclusion was that the model could be a simplesolution for balancing an electric bicycle. However, furtherexperimentation on a bigger scale would have to be doneto reach a more decisive conclusion.
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GRÖNLUND, ARTHUR, i CHRISTOS TOLIS. "Riderless self-balancing bicycle : Derivation and implementation of a time variant linearized state space model for balancing a bicycle in motion by turning the front wheel". Thesis, KTH, Mekatronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232995.
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Self-driving vehicles are becoming more and more prevalent in society, with buses and cars close to being implemented in the public domain. Self-driving two-wheeled vehicles could be a solution for space-efficient transportation in cities, where space is becoming a larger issue. The purpose of this project was to develop and implement a linearized time variant state space model for balancing such a two-wheeled vehicle in the form of a bicycle by turning its front wheel. To test the derived model a small demonstrator was built and experimented with. The final conclusion was that the model could be a simple solution for balancing an electric bicycle. However, further experimentation on a bigger scale would have to be done to reach a more decisive conclusion.Självkörande fordon börjar bli en allt större verklighet i samhället, där bussar och bilar snart kan komma att implementeras på större skala. Självkörande tvåhjuliga fordon kan vara en möjlig lösning på mindre fordon i städer där utrymme blir mer och mer sparsamt. Syftet med detta projekt har varit att ta fram och implementera en linjäriserad tidsvarierande tillståndsmodell för balansreglering av en elcykel genom vridning av framhjulet. För att testa modellen konstruerades en liten demonstrator med vilken experiment och tester utfördes. Den slutsats som drogs var att modellen mycket väl skulle kunna vara en lösning för balansering av en elcykel, men att fortsatta undersökningar bör genomföras på en större skala för att en mer definitiv slutsats skall kunna dras.
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Smlatic, Anita, i Marie Ulmheden. "Rökarmask : En kvalitativ studie om rökarens upplevelse avanpassning och rökningsbeteende i samhället". Thesis, Högskolan i Halmstad, Sektionen för hälsa och samhälle (HOS), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-25969.
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Rökare får allt mer mindre utrymme att röka på och det blir allt mindre socialt accepterat att röka i dagens samhälle. Syftet med vår uppsats är att undersöka hur rökaren upplever samhällets normer och negativitet kring rökning, samt hur detta påverkar dem. Vår huvudsakliga frågeställning har varit ”Hur påverkas rökare av samhället nedvärderande syn på rökning?”, men även om det finns någon skillnad i deras rökningsbeteende beroende på social situation. Studien är gjord med hjälp av en kvalitativ metod i form av intervjuer, där vi intervjuat 6 rökare allt ifrån åldern 23-70. Vi har använt oss utav Goffmans intrycksstyrningoch Harveys rumsbegreppför att kunna förklara ur ett sociologiskt perspektiv hur rökaren upplever samhället och hur det påverkar denne. Vårt resultat har visat att rökare anpassar sig väldigt mycket till den sociala situationen, samt tar hänsyn till andra och att rökare kartlägger sin rökning grundat på tid, rum och social situation.Smokersgetincreasinglyless roomto smokeanditis becoming lesssociallyacceptable to smokeintoday's society.The purpose of ourpaper is to examinehowthe smokerexperiencingsocial normsandnegativity surroundingsmoking,andhow this affectsthem. Our mainresearch questionwas"How does the negative view on smoking in today’s society affect smokers?”, but also if there is any differenceintheir smokingbehaviordepending on thesocial situation.The study was conductedusinga qualitative approachin the form ofinterviews, wherewe interviewedsixsmokersranging fromages23-70. We have usedGoffman'spresentation of SelfandHarveysspace theory to explainfrom a sociological perspectivehowsmokersperceivesociety andhow it affectshim.Ourresults have shownthat smokers arevery adaptedtothe social situation, they are considerate andthat smokerscharttheir smokingbased on thetime, placeand social situation.
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Halwachi, Jirra. "Upplevelsen av tron på den egna förmågan i relation till studier hos gymnasieelever". Thesis, Mälardalens högskola, Akademin för hälsa, vård och välfärd, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-41227.
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En kvalitativ studie har gjorts på åtta sistaårs gymnasieelever i södra Sverige. Studiens syfte var att undersöka self-efficacy bland eleverna. Två forskningsfrågor undersöktes: Vad upplever sistaårs gymnasieelever påverkar deras akademiska self-efficacy i samband med studier? Hur upplever sistaårs gymnasieelever att deras akademiska self-efficacy påverkar dem på deras fritid? Resultatet av en tematisk innehållsanalysvisade att positiv respons från tidigare erfarenhet hade ett positivt inflytande på elevernasself-efficacy och deras akademiska prestationer. Andras erfarenheter hade ofta en negativ inverkan på elevernas self-efficacy, deras fysiologiska och emotionella tillstånd påverkade dem olika. De som gjorde någon fysisk aktivitet underveckan kände sig mer lättad och fokuserade bättre på studierna jämfört med dem som inte gjorde någon form av fysisk aktivitet, dessa studenter kände ofta frustration eller stress påsin fritid och i deras akademiska prestation. Studien hoppas bidra till en större bild på målgruppen och ge en allmän bild på gymnasieelevers akademiska self-efficacy.
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Ndiaye, Maguette. "Pour une esthétique de l'apocalypse dans "London Fields" de Martin Amis et "How the Dead Live" de Will Self : thèmes, formes et lieux". Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAC023/document.
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Comment écrire à l’ère du post-humain sans avoir recours à une apocalypse postmoderne qui aurait déjà rompu avec ses origines bibliques ? Si nous sommes désormais familiers avec la manière dont les romans de Martin Amis et de Will Self assument pleinement un discours apocalyptique radical, nous explorons les possibilités d’arguer en faveur d’une esthétique apocalyptique plus complexe avec ses formes diverses et ses variations thématiques allant de la menace nucléaire à des révélations plus intimes. Les deux textes de notre corpus, London Fields de Martin Amis et How the Dead Live de Will Self, sont donc unis dans ce travail par la présence fantasmagorique de la mort (dont le meurtre de l’amour) et par la "spectacularisation" de la mort. Dans la perspective d’une fin sans cesse rejouée, le personnage est autant l’avatar de ses propres contingences - le temps, le trafic urbain, le simulacre et la mort - que la cible d’une langue qui se déliteIn this resolutely post-human era how can literature disregard the appeal of a postmodern apocalypse that has long left behind its biblical origins? We argue that not only do the novels of Martin Amis and Will Self clearly engage in a radical apocalyptic discourse with all its various forms and thematic variations - from the nuclear threat to more intimate revelations - but also designate the intricate workings of a wider apocalyptic aesthetics. This is what joins the two novels of our corpus: London Fields and How the Dead Live, with the phantasmatic death or murder of love, on one side and the "spectacularity" of death on the other. With the future consisting of the endless repetition of their “end”, the characters are as much their own avatars conditioned by the contingencies of time, urban congestion, simulacrum and death, as they are the targets of an eroded language
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Apelgren, L. Petersdotter. "When Camp becomes a Method : a conceptualization of conversational performatives and curatorial agencies within ‘the camp-eye’". Thesis, Stockholms universitet, Filmvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-184801.
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The aim of following thesis is to demonstrate the potentials of reassessing camp into a question of method. While others have argued for the definition of camp to lie in: an aesthetic; a question of taste; the extravagant theatrical; the male gay sensibility; or as an expression of parody, this thesis suggests that camp is to be found in the performative act of readings. With emphasis on ‘decoding language’, ‘the signifier/signified’ and ‘the camp eye’ I will argue for the relevance of ‘camp as method’ and situate former stated in relation to Bhabha’s concept of ‘conversational art’; a deconstructional examination of values of aesthetic experiences set into dialogue. Demonstrating for such conceptualization three theoretical approaches and themes will be outlined. First, a historical overview of camp followed by a reassessment of camp into a method. Second, an examination of possible extensions to the concept of rereading strategies within camp, including theories on queer phenomenology; queer space and time; topias and non-places; theories of curatorial methods and its agencies. And last, I will do an analysis of Moyra Davey’s video Hemlock Forest and show how Davey’s use and reference towards Chantal Akerman can be read as camp and constitutes ‘camp as method’ according to suggested reassessment.
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Bereketab, Semere. "Complex Equilibrium of Laterally Curved Wakes". Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/35806.
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Turbulent wakes generated from an aircraft or submarine vehicles has been of main interest to researchers due to the broad band noise associated with such wakes. One such case is the noise generated by spiral vortices shed of from one blade interacting with another oncoming blade of helicopter rotor. Consequently, researchers have been trying to understand the basic physics and evolution of such wakes. Although there has been numerous studies done on plane wakes, there has been little research being done on laterally curved wakes.
Single and two-point velocity measurements were taken on a plane and laterally curved turbulent wakes to understand the evolution and effect of lateral curvature into the far wake region. The analyses provide useful information in modeling curved or spiral wakes such as turbulence field surrounding tip vortices shed from a wing. In order to achieve our objectives, the Virginia Tech 3’ x 2’ subsonic wind tunnel was used to take velocity measurements of toroidal ring model and a straight cylinder as a control case. Velocity measurements were done using four sensor hot-wire anemometers, to obtain all mean velocity, Reynolds stress, triple product components of the turbulence field. Single point, spectra and two-point measurements of the wakes were performed throughout the development into the far wake region. The single point results reveal the universality of the mean axial velocity, however the Reynolds stresses and triple products were not universal illustrating that the turbulence field has its own length and velocity scales different from that of the mean flow. The effect of lateral curvature is mainly evidenced in the early development of the curved ring wake. The turbulent energy budget reveals similar trend for both wakes and plane wake achieves approximate equilibrium. The spectra result reveals for the plane wake that self-preservation is achieved for all scales of motion, while the ring wake does not achieve such a state. While the longitudinal correlations of both wakes are similar in form, in general difference in form and orientation prevailed over all indicating the difference in the turbulent structure of both wakes. Linear stochastic estimation reveals the presence of spanwise and double-roller eddy structures in the plane wake and only spanwise eddies were detected for the ring wake.Master of Science
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Dahlbeck, Johan. "Other Classrooms: Beyond the Disciplinary Spaces of the Past". Thesis, Malmö högskola, Lärarutbildningen (LUT), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-34033.
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The following thesis is at once a somewhat rudimentary attempt to relate the history of the classroom while describing the potential impact on the space of learning by the introduction of a new type of computer program into a school setting. It asks the question: how is the space of learning affected by the use of this specific type of computer program as an educational tool? In order to begin to formulate an answer to this question I have drawn upon the theorizing of Foucault and Deleuze in particular. Establishing the modern classroom as a relative of sorts to the disciplinary spaces of the past, I conclude that the means and practices by which pupils are being controlled within the space of learning have shifted from discipline being extorted exclusively by the teacher – who in turn is aided by the physical and temporal constraints of the classroom – to control being applied by each individual pupil through technologies of the self. This, in turn, led me to the conclusion that although there are certainly quite tangible effects on the space of learning itself, the actual mode of learning may very well be kept intact through techniques designed to control the behavior of the individual pupil beyond the disciplinary spaces of the past.
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Selig, Sandra. "The rhythmic disfiguration of vision : re-thinking subjectivity and art after minimalism". Thesis, Queensland University of Technology, 1999.
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Borén, Thomas. "Meeting-places of Transformation : Urban Identity, Spatial Representations and Local Politics in St Petersburg, Russia". Doctoral thesis, Stockholm University, Department of Human Geography, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-412.
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This study develops a model for understanding spatial change and the construction of space as a meeting-place, and then employs it in order to show an otherwise little-known picture of (sub-)urban Russia and its transformation from Soviet times to today. The model is based on time-geographic ideas of time-space as a limited resource in which forces of various kinds struggle for access and form space in interaction with each other. Drawing on cultural semiotics and the concepts of lifeworld and system, the study highlights the social side of these space-forming forces. Based on a long-term fieldwork (participant observation) in Ligovo/Uritsk, a high-rise residential district developed around 1970 and situated on the outskirts of Sankt-Peterburg (St Petersburg), the empirical material concerns processes of urban identity, spatial representations and local politics. The study explicates three codes used to form the image of the city that all relate to its pre-Revolutionary history, two textual strategies of juxtaposition in creating the genius loci of a place, and a discussion of what I call Soviet "stiff landscape" in relation to Soviet mental and ordinary maps of the urban landscape. Moreover, the study shows that the newly implemented self-governing municipalities have not realised their potential as political actors in forming local space, which raises questions on the democratisation of urban space. Finally, the study argues that the model that guides the research is a tool that facilitates the application of the world-view of time-geography and the epistemology of the landscape of courses in concrete research. The study ends with an attempt to generalise spatial change in four types.
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Karacayir, Murat. "Space-time Codes". Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612028/index.pdf.
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The phenomenon of fading constitutes a fundamental problem in wireless communications. Researchers have proposed many methods to improve the reliability of communication over wireless channels in the presence of fading. Many studies on this topic have focused on diversity techniques. Transmit diversity is a common diversity type in which multiple antennas are employed at the transmitter. Space-time coding is a technique based on transmit diversity introduced by Tarokh et alii in 1998.
In this thesis, various types of space-time codes are examined. Since they were originally introduced in the form of trellis codes, a major part is devoted to space-time trellis codes where the fundamental design criteria are established. Then, space-time block coding, which presents a different approach, is introduced and orthogonal spacetime block codes are analyzed in some detail. Lastly, rank codes from coding theory
are studied and their relation to space-time coding are investigated.
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Dowker, Fay H. "Space-time wormholes". Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359554.
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Cherré, Peggy. "Une ethnologie du foyer, en France métropolitaine : la mise en culture du foyer : un temps féminin et un espace maternel". Thesis, Montpellier 3, 2011. http://www.theses.fr/2011MON30097.
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La femme entretient un lien complexe et indéfectible avec son foyer, rendant ambivalent son statut dans la société car il l’inscrit dans un espace donné, prescrit et sexué. Ce lien lui apparaît, aujourd’hui, comme un « fil à la patte » et pourtant, il est le lieu où s’exerce sa forme à elle, de domination. Certes, il est aussi parfois un lieu de domination à son égard,mais il reste le lieu où co-existent des formes de pouvoirs. Si la femme est réduite à son foyer, il reste néanmoins un espace où son savoir, à elle, prédominera sur celui du groupe et de l’homme, car elle est la « gardienne du feu », celle qui nourrit, entretient et soigne le clan, la famille. Partant de cette hypothèse générale, nous pouvons la décliner à travers ceque ce lien, entre la femme et son foyer, apporte dans les représentations extérieures du foyer, entre envies et incompréhensions. Également, ce qu’il produit comme effet sur la propre représentation de soi-même, lorsque l’on entretient ce lien de façon permanente dans le temps et l’espace. Le corps devient alors un prolongement de cet espace dédié ou prescrit. Comment ce lien, lorsqu’il semble être distendu, se rappelle à la femme par les évènements de la vie : grossesse, chômage, retraite etc. Et, à quel point ce lien, construit socialement et culturellement, appartient à la femme, au point que l’homme, lorsqu’il est amené à se replier durablement au foyer, dérange une forme d’intimité. Mais surtout,comment ce lien est-il légitimé par un événement particulier : la naissance de l’enfant. Car il ne peut exister fondamentalement de « femme au foyer » sans « mère au foyer » ou tout du moins, si l’enfant ne paraît pas, sans ce voeu même, qui fera ainsi exister le foyerWomen have a complex and unfailing connection with their household, which makes their status in society ambivalent, because it links them with a specific space characterized by gender and social prescription. Today, this connection appears to them as a way to tie them down, and yet, it is also via this connection that women exercise their own form of domination. Of course, the household is also sometimes where they experience domination, but it remains a place where several forms of power coexist. If women are sometimes reductively defined as their household, it is also a place where their specific knowledge will prevail over that of the men and the group. Because they are “the fire keepers”, they arefeeding, supporting and looking after the clan, the family. Basing our work on this general hypothesis, we can go further in investigating this specific connection between women and their households, how this link lives on in the external representations of the household, giving rise to envy and incomprehension. How it impacts women’s self-representation,when this specific connection is held over space and time. Their body becomes the prolongation of this dedicated and socially prescribed space. How this social connection, when it seems to have slackened, tightens with each change in life: pregnancy, unemployment, retirement, etc. To what extent does this link, socially and culturally built, belongs to women, leading to a disruption of a form of intimacy when men have to withdraw durably into the household. Above all, how this connection is legitimate by one specific event: the birth of a child. Because a housewife is not complete without being amother or, in the case in which she is childless, without at least desiring a child
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Lamahewa, Tharaka Anuradha, i tharaka lamahewa@anu edu au. "Space-Time Coding and Space-Time Channel Modelling for Wireless Communications". The Australian National University. Research School of Information Sciences and Engineering, 2007. http://thesis.anu.edu.au./public/adt-ANU20070816.152647.
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In this thesis we investigate the effects of the physical
constraints such as antenna aperture size, antenna geometry and
non-isotropic scattering distribution parameters (angle of
arrival/departure and angular spread) on the performance of coherent
and non-coherent space-time coded wireless communication systems.
First, we derive analytical expressions for the exact pairwise error
probability (PEP) and PEP upper-bound of coherent and non-coherent
space-time coded systems operating over spatially correlated fading
channels using a moment-generating function-based approach. These
analytical expressions account for antenna spacing, antenna
geometries and scattering distribution models. Using these new PEP
expressions, the degree of the effect of antenna spacing, antenna
geometry and angular spread is quantified on the diversity advantage
(robustness) given by a space-time code. It is shown that the number
of antennas that can be employed in a fixed antenna aperture without
diminishing the diversity advantage of a space-time code is
determined by the size of the antenna aperture, antenna geometry and
the richness of the scattering environment.
¶
In realistic channel environments the performance of space-time
coded multiple-input multiple output (MIMO) systems is significantly
reduced due to non-ideal antenna placement and non-isotropic
scattering. In this thesis, by exploiting the spatial dimension of a
MIMO channel we introduce the novel use of linear spatial precoding
(or power-loading) based on fixed and known parameters of MIMO
channels to ameliorate the effects of non-ideal antenna placement on
the performance of coherent and non-coherent space-time codes. The
spatial precoder virtually arranges the antennas into an optimal
configuration so that the spatial correlation between all antenna
elements is minimum. With this design, the precoder is fixed for
fixed antenna placement and the transmitter does not require any
feedback of channel state information (partial or full) from the
receiver. We also derive precoding schemes to exploit non-isotropic
scattering distribution parameters of the scattering channel to
improve the performance of space-time codes applied on MIMO systems
in non-isotropic scattering environments. However, these schemes
require the receiver to estimate the non-isotropic parameters and
feed them back to the transmitter.
¶
The idea of precoding based on fixed parameters of MIMO channels is
extended to maximize the capacity of spatially constrained dense
antenna arrays. It is shown that the theoretical maximum capacity
available from a fixed region of space can be achieved by power
loading based on previously unutilized channel state information
contained in the antenna locations. We analyzed the correlation
between different modal orders generated at the transmitter region
due to spatially constrained antenna arrays in non-isotropic
scattering environments, and showed that adjacent modes contribute
to higher correlation at the transmitter region. Based on this
result, a power loading scheme is proposed which reduces the effects
of correlation between adjacent modes at the transmitter region by
nulling power onto adjacent transmit modes.
¶
Furthermore, in this thesis a general space-time channel model for
down-link transmission in a mobile multiple antenna communication
system is developed. The model incorporates deterministic
quantities such as physical antenna positions and the motion of the
mobile unit (velocity and the direction), and random quantities to
capture random scattering environment modeled using a bi-angular
power distribution and, in the simplest case, the covariance between
transmit and receive angles which captures statistical
interdependency. The Kronecker model is shown to be a special case
when the power distribution is separable and is shown to
overestimate MIMO system performance whenever there is more than one
scattering cluster. Expressions for space-time cross correlations
and space-frequency cross spectra are given for a number of
scattering distributions using Gaussian and Morgenstern's family of
multivariate distributions. These new expressions extend the
classical Jake's and Clarke's correlation models to general
non-isotropic scattering environments.
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Lamahewa, Tharaka Anuradha. "Space-time coding and space-time channel modelling for wireless communications /". View thesis entry in Australian Digital Theses Program, 2006. http://thesis.anu.edu.au/public/adt-ANU20070816.152647/index.html.
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Haron, Linariza. "Facility space-time management". Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326152.
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Thompson, Philip R. Z. (Philip Reed Zane). "Space, time and acoustics". Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/78997.
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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1988.Includes bibliographical references (leaves 156-159).
This thesis describes the development of new concepts in acoustical analysis from their inception to implementation as a computer design tool. Research is focused on a computer program which aids the designer to visually conceive the interactions of acoustics within a geometrical~y defined environment by synthesizing the propagation of sound in a three dimensional space over time. Information is communicated through a unique use of images that are better suited for interfacing with the design process. The first part of this thesis describes the concepts behind the development of a graphic acoustical rendering program to a working level. This involves the development of a computer ray tracing prototype that is sufficiently powerful to explore the issues facing this new design and analysis methodology. The second part uses this program to evaluate existing performance spaces in order to establish qualitative criteria in a new visual format. Representational issues relating to the visual perception of acoustic spaces are also explored. In the third part, the program is integrated into the design process. I apply this acoustical tool to an actual design situation by remodeling a large performance hall in Medford, Massachusetts. Chevalier Auditorium is a real project, commissioned by the city of Medford, whose program requirements closely match my intentions in scope, scale and nature of a design for exploring this new acoustical analysis and design methodology. Finally, I summarize this program's effectiveness and discuss its potential in more sophisticated future design environments.
by Philip R.Z. Thompson.
M.Arch.
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Sanders, Ralph Jarrett. "Space, time, and silence". Thesis, Virginia Polytechnic Institute and State University, 1990. http://hdl.handle.net/10919/56200.
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This thesis is a meditation upon silence, upon its ontological relationship to architecture. As such, it relies more upon insight and contemplation than analysis. It seeks to explore this realm through the making of a trappist monastery, to ask fundamental questions about the nature of human dwelling in the most complete sense, to stir the memory and perhaps to move the heart toward that silence which is beyond thought, which precedes and bounds and yet pervades all human experience.Master of Architecture
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Pak, Anne On-Yi 1977. "Euclidean space codes as space-time block codes". Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86722.
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Kamela, Martin J. "Space-time duality, superduality, and effective actions on anti-de-Sitter space-time". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ64585.pdf.
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Liesenjohann, Thilo. "Foraging in space and time". Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4856/.
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All animals are adapted to the environmental conditions of the habitat they chose to live in. It was the aim of this PhD-project, to show which behavioral strategies are expressed as mechanisms to cope with the constraints, which contribute to the natural selection pressure acting on individuals. For this purpose, small mammals were exposed to different levels and types of predation risk while actively foraging. Individuals were either exposed to different predator types (airborne or ground) or combinations of both, or to indirect predators (nest predators). Risk was assumed to be distributed homogeneously, so changing the habitat or temporal adaptations where not regarded as potential options. Results show that wild-caught voles have strategic answers to this homogeneously distributed risk, which is perceived by tactile, olfactory or acoustic cues. Thus, they do not have to know an absolut quality (e.g., in terms of food provisioning and risk levels of all possible habitats), but they can adapt their behavior to the actual circumstances. Deriving risk uniform levels from cues and adjusting activity levels to the perceived risk is an option to deal with predators of the same size or with unforeseeable attack rates. Experiments showed that as long as there are no safe places or times, it is best to reduce activity and behave as inconspicuous as possible as long as the costs of missed opportunities do not exceed the benefits of a higher survival probability. Test showed that these costs apparently grow faster for males than for females, especially in times of inactivity. This is supported by strong predatory pressure on the most active groups of rodents (young males, sexually active or dispersers) leading to extremely female-biased operative sex ratios in natural populations.
Other groups of animals, those with parental duties such as nest guarding, for example, have to deal with the actual risk in their habitat as well. Strategies to indirect predation pressure were tested by using bank vole mothers, confronted with a nest predator that posed no actual threat to themselves but to their young (Sorex araneus). They reduced travelling and concentrated their effort in the presence of shrews, independent of the different nutritional provisioning of food by varying resource levels due to the different seasons. Additionally, they exhibited nest-guarding strategies by not foraging in the vicinity of the nest site in order to reduce conspicuous scent marks. The repetition of the experiment in summer and autumn showed that changing environmental constraints can have a severe impact on results of outdoor studies. In our case, changing resource levels changed the type of interaction between the two species.
The experiments show that it is important to analyze decision making and optimality models on an individual level, and, when that is not possible (maybe because of the constraints of field work), groups of animals should be classified by using the least common denominator that can be identified (such as sex, age, origin or kinship). This will control for the effects of the sex or stage of life history or the individual´s reproductive and nutritional status on decision making and will narrow the wide behavioral variability associated with the complex term of optimality.Das Verhalten von Tieren ist das Ergebnis eines kontinuierlichen Anpassungsprozesses im Laufe der Evolution einer Art und damit der Veränderung der Umgebung in der es lebt und der Interaktion mit anderen Arten. Dies wird besonders deutlich im Verhalten von potentiellen Beutetieren, ihre Strategien beinhalten meist ein möglichst unauffälliges Verhalten im Zusammenspiel mit reduzierter Bewegung und möglichst guter Tarnung. Dementgegen stehen essentielle Bedürfnisse, wie zum Beispiel die Nahrungssuche, die Verteidigung von Ressourcen (zum Beispiel Territorien, Futterstellen) und die Suche nach Paarungspartnern. Beutetiere leben also in einem Spannungsfeld indem sie Ihr Verhalten optimieren müssen. Hierbei stehen die Ernährung, erfolgreiche Verpaarung und andere Chancen auf der einen Seite, die Vermeidung von Begegnungen mit Prädatoren auf der anderen. Vor allem Kleinsäuger sind häufig als Beutetiere mit einer Vielzahl von Prädatoren aus der Luft und auf dem Boden konfrontiert. Sie müssen für die verschiedenen Bedrohungen adaptive Verhaltensanpassungen bereit haben und in der Lage sein, auf die optischen, olfaktorischen oder akustischen Signale, die die Gefahr durch Prädatoren anzeigen, mit plastischen Verhaltensmustern zu reagieren. Die vorliegende Dissertation beschäftigt sich mit bisher als Konstanten behandelten Faktoren und untersucht anhand von Verhaltensexperimenten mit wilden Wühlmäusen (Microtus arvalis) folgende Fragestellungen: - Wie verhalten sich Tiere, die einer homogenen Risikoverteilung ausgesetzt sind, zum Beispiel weil ihr Prädator genauso gross ist wie sie, im gleichen Habitat lebt und es keinen sicheren Ort gibt? - Mit welchen Anpassungen reagieren Tiere, wenn sie gleichzeitig verschiedenen Prädatoren ausgesetzt sind? - Wie unterscheiden sich die Nahrungssuchstrategien von Männchen und Weibchen? - Wie verhalten sich laktierende Weibchen, die einer permanenten, indirekten Gefahr, z.B. durch einen Nestprädator ausgesetzt sind? Die Ergebnisse der verschiedenen Versuche in künstlichen Arenen und Aussengehegen zeigen, dass die Mäuse in der Lage sind, adaptive Verhaltensanpassung an homogenes Risiko und verschiedene Prädationstypen abzurufen. So sind sie in der Lage, Luft- von Bodenprädatoren zu unterscheiden und jeweils das Verhalten zu zeigen, dass die größtmögliche Sicherheit mit sich bringt. Die simultane Kombination von verschiedenen Prädatoren bewirkt hierbei additive Effekte. Gibt es keine Auswahl zwischen Habitaten, sondern nur unterschiedliche homogene Risikolevel, reagieren sie auf steigendes Risiko immer mit verminderter Aktivität und konzentrieren ihre Nahrungssuche auf weniger Futterstellen, beuten diese dafür jedoch länger aus. Die Wertigkeit von Futterstellen und alternativen Optionen verändert sich also mit dem Risikolevel. Ähnliches zeigt sich auch in den unterschiedlichen Futtersuchstrategien von Männchen und Weibchen. Die untersuchte Art ist polygyn und multivoltin, dementsprechend verbinden die Männchen mit ihrer Nahrungssuche Aktivitäten wie die Suche nach Paarungspartnern und unterscheiden sich die Aktivitätsmuster zwischen Männchen und Weibchen. Zusätzlich zeigen die Ergebnisse, das laktierende Weibchen in der Lage sind, das Risiko für sich und für Ihre Jungen abzuschätzen, wenn sie mit einem Nestprädator (Sorex araneus) konfrontiert werden. Für die Interaktion zwischen diesen beiden Arten ist jedoch die Saison (und damit die Ressourcenlage), in der sie sich begegnen, von entscheidender Bedeutung. Wühlmäuse reagieren mit entsprechenden Verhaltensanpassungen zum Schutz des Nestes um die Überlebenschancen ihrer letzten Würfe im Herbst zu erhöhen. Die vorliegende Arbeit konnte grundsätzliche Probleme der antiprädatorischen Verhaltensanpassung von Beutetieren klären und wichtige Faktoren der Entscheidungsfindung unter Prädationsdruck analysieren. Sie zeigt, dass Tiere das Risiko in ihrer Umgebung nicht unbedingt über direkt Signale wahrnehmen, sondern ihre Verhaltensstrategien einem empfundenen Gesamtrisikolevel anpassen. Dies ermöglicht ihnen, adaptive Strategien zu verfolgen, auch wenn sie keine Auswahl an sicheren Habitaten haben. Sie zeigt auch die unterschiedliche Wahrnehmung von Risiken durch Männchen und Weibchen, die durch die unterschiedlichen mit der Aktivität zusätzlich wahrgenommenen Chancen verknüpft zu sein scheint. Zusätzlich wurde der Einfluss des reproduktiven Status (z.B. laktierend), sowie der Ressourcenlage (z. B. je nach Saison) nachgewiesen.
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Silvester, Anna-Marie. "Space-time continuous phase modulation". Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/14721.
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The combination of Space-Time (ST) coding and Continuous-Phase Modulation (CPM) produces a low power, energy efficient communication scheme suitable for wireless transmission. Space-time coding increases the reliability of transmission, and continuous-phase modulation (CPM) has the
potential to provide considerable energy savings. CPM is a modulation technique that involves the transmission of a signal with continuous-phase and a constant envelope, where the continuous-phase property produces a very bandwidth efficient signal, and the constant-envelope property enables non
linear (and thus energy efficient) signal amplification. The ST-CPM code is of special interest for wireless sensors because in the wireless sensor network environment energy consumption is highly constrained. The combination of ST codes and CPM is non-trivial and thus ST-CPM codes based upon
block-based orthogonal and diagonal signal matrices are presented. These codes are forms the basis of a distributed ST-CPM code. The distributed ST codes are designed to operate in wireless networks containing a large set of nodes, of which only a small a priori unknown subset will be active at any
time. The devised distributed ST-CPM scheme combines the ST-CPM code with a diagonal signaling matrix, (commonly assigned to all relay nodes) with signature vectors(uniquely assigned to nodes). The energy consumption of the proposed distributed ST-CPM scheme is compared with that of a distributed ST linear modulation (LM) scheme. The distributed ST-CPM scheme is shown to
outperform the distributed ST-LM scheme for all but short-range transmission. Finally, a serially concatenated code for ST-CPM is proposed. The concatenated code consists of the diagonal signalling matrix as the inner code, and a class of double parity check (DPC) codes as the outer code. The
resulting concatenated codes that are formed from the ST-CPM code and a DPC code are shown to provide performance close to capacity, and to provide performance superior to that provided by the more common combination of CPM, or ST-CPM schemes with convolutional codes.
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South-Dickinson, Ian James. "Globally consistent space-time reconstruction". Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43207.
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We present a novel algorithm for space-time reconstruction of deforming meshes. Based on partial meshes at every frame, and sparse optical flow information between frames, we reconstruct a globally consistent, crossparameterized, and hole filled sequence of meshes. Our method is based on pair-wise merging of frame sequences while correcting for changes in topology, filling in missing geometry, and repairing inconsistencies. We also introduce a robust method for filling in missing geometry in each frame of the sequence using geometry from another frame. Using this method we can propagate geometry over the full frame sequence, correcting errors and filling in holes even in regions of the object that are not observed in the input meshes for extended periods of time. Unlike other approaches, our method does not require template geometry, nor is it limited to narrow classes of objects or purely isometric deformations.
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Yang, Ho. "Partially adaptive space-time processing". Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/13028.
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Seliktar, Yaron. "Space-time adaptive monopulse processing". Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/13075.
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Holm, Jens Christian. "Spinors in discrete space-time". Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/27901.
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Ramlochand, John. "Japanese cinema : time space nation". Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102159.
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This work utilizes a spatial theory approach to meditate on postwar Japanese society and cinema. It is not a history of Japanese postwar cinema, or a survey of notable directors and genres. Rather, the focus is specifically on film and its relation to the deeper tropes of Japanese society; in particular, on how the sense of nation is affirmed and/or challenged within a postwar period of remarkable change. Understanding such a structure greatly aids in analyzing the forms and meanings within the films. The question of National Cinema, then, is approached by exploring how the interaction of spatial-temporal elements affect both the social construction and filmic practices of the nation.The first part of the dissertation features an extended analysis of Japanese society using a variety of historical, philosophical and theoretical sources, both Japanese and foreign. They provide a theoretical base and a social history that ground the critical readings of the selected films; all of which are well-known and widely available. Part two is a close textual analysis of five 1950s productions---from a range of films and genres---that are contrasted with three films from the late 1980s/early 1990s. The final chapter examines notions about National Cinema in light of the preceding film analysis.
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Mason, Lionel J. "Twistors in curved space time". Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:29de7cd1-84c9-4374-8f7d-9a402dd9e0ed.
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This thesis is concerned with an investigation of twistorial structures present in curved Lorentzian space-times. Chapter 1 introduces the basic definitions and some theorems that will be used later in the text. Chapter 2 investigates generalised connections that arise in twister theory. First the Cartan con-formal connection is studied, and some of the geometry underlying it is shown to be that used by Fefferman and Graham C133. Also a condition that a space-time is conformal to vacuum is given. Secondly the theory of the Chern connection associated to a C.R. manifold is developed in such a way as to make the calculation of the connection associated to a twistor C.R. manifold straight forward. A new proof of the Chern theorem of existence and uniqueness is given. The Chern connection of a twistor C.R. manifold is then calculated, and discussed. In particular S-dimensionai C.R. manifolds arising as twistor C.R. manifolds are characterised. Canonical structures peculiar to the twister case are discussed. Applications of C.R. manifold theory to algebraically special space-times are suggested. Chapter three analyses how various twistorial structures behave in linearised general relativity. First, deformations of the space of complex null geodesies corresponding to variations of the conformal structure of space-time are shown to be generated by hami1tonians. Those that correspond to variations in the metric satisfying the field equations are given, along with hamiltonians corresponding to different fields and field equations. Beneralisations to nonlinear equations are discussed. These ideas are applied to hypersurface twisters in linearised theory, using fiat hypersurfaces and Cech cohoeology. Expressions are obtained for the deformation of the complex structure of the spaces and their evolution. The results are generalised to non flat hypersurfaces using Dolbeault cohomolcgy. It is shown that certain canonically defined forms on the spin bundle are preferred Dolbeault representatives for derivatives of the twister cohomology classes corresponding to the linearised field. In chapter four I generalise the results of chapter three to curved space using the Chern connection. In particular twistorial formulations of the constraint equations are given, and a formula for the evolution that satisfies the the vacuum evolution equations is given in terms of an "infinity" twistor and a "time" twister. This is then discussed. In chapter five I make some comments on the interpretation of a three form on the spin bundle discovered by B.A.J. Sparling as the gravitational hami1tonian. I then use this to show that one can give an interpretation of Penrose's quasi-local angular momentum twistor in terms of the canonical formalism.
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Dang, Xiaoyu. "Space-Time Shaped Offset QPSK". International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606190.
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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, CaliforniaThis paper describes the use of orthogonal space-time block codes to overcome the performance and complexity difficulties associated with the use of Shaped Offset QPSK (SOQPSK) modulation, a ternary continuous phase modulation (CPM), in multiple-input multiple-output telemetry systems. The orthogonal space-time block code is applied to SOQPSK waveforms in the same way it would be applied to symbols. The procedure allows the receiver to orthogonalize the link. The main benefits of this orthogonalization are the easy realization of the transmit diversity for the offset-featured SQOSPK, and the removal of the noise correlation at the input to the space-time decoder and the elimination of I/Q interference when space time orthogonalization is applied to the symbol level.
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Asbell, Jonathan Clark. "Thresholds in Space and Time". Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/100920.
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In architecture there is perhaps no better opportunity to capture movement and change than in the design of thresholds. They can be a simple strip of metal beneath a doorway, barely noticed as you pass over it, or a grand atrium that you stop and marvel at on your way into the office. They can manifest as a change of materials or finishes, or of some parameter such as ceiling height. They might even be immaterial altogether, like the boundary between light and shadow.
Thresholds transcend the physical to effect a psychological experience. They can be spatial or temporal or some combination of the two, but whatever form they take, all thresholds can be said to be mediators of our movement from one spatial status to another. Inside to outside, public to private, here to there. Too often our buildings relegate these changes to doors or openings that have little connection to the buildings they are a part of, and so our awareness of passage from space to space is diminished. This thesis explores ways to enrich the architecture of the threshold so that it doesn't merely recede to the bounds of our perception.Master of Architecture
The term "threshold" often brings to mind a strip of material at the base of a doorway, but architecture considers thresholds more broadly as moments of movement or change. This thesis examines such moments in an original building design, proposing several threshold types and exploring their impact on occupants.
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Boué, Stéphanie. "Transcripts in space and time". Université Louis Pasteur (Strasbourg) (1971-2008), 2006. https://publication-theses.unistra.fr/public/theses_doctorat/2006/BOUE_Stephanie_2006.pdf.
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Les biologistes moléculaires cherchent à comprendre comment fonctionnent les organismes au niveau moléculaire. Le but ultime de ces recherches est d’offrir la possibilité de manipuler sans risque des cellules et/ou des organismes afin de combattre des maladies génétiques, d’éradiquer les maladies contagieuses ou par exemple d’améliorer les qualités nutritives de l’alimentation. Actuellement, la manière la plus précise et pratique de comprendre le fonctionnement d’un organisme est d’étudier son transcriptome et ses variations dans l’espace et le temps. Suivant cette logique, le but de ma thèse de doctorat a été double: (1) estimer l’importance de l’épissage alternatif qui engendre une diversité des transcripts (2) étudier les transcriptomes de deux organismes modèles : Mus musculus et Drosophila melanogaster, respectivement dans l’espace et le temps. Durant ces années de recherche, j’ai rassemblé des découvertes intéressantes concernant l’expression des gènes et sa régulation. D’abord, l’épissage alternatif s’est avéré être un méchanisme important non seulement en terme de fréquence (des transcripts alternatifs sont générés pour une vaste majorité des gènes, et ce dans de multiples espèces), mais aussi en terme d’évolution (l’épissage alternatif semble permettre à un gène d’évoluer sans conséquences trop négatives pour l’organisme). Par ailleurs nous avons prouvé que le niveau d’expression de transcripts n’est pas en soi synonyme de fonction: il y a en effet une quantité non négligeable d’expression neutre, qui doit être prise en compte lors de l’assignation d’une fonction à un gène, uniquement basée sur la similarité de son profil d’expression par rapport à celui d’un gène de fonction connue. Enfin, nous avons étudié des séries de puces à ADN appliquées à l’embryogenèse de la mouche dans le temps, en utilisant une technique non conventionnelle pour ce type d’approche. Nous avons réparti les gènes en différentes classes selon leurs profils d’expression. Nous avons pu prouver que ces classes de gènes ont des critères biologiques en commun, ce qui laisse supposer que les gènes inconnus ou mal caractérisés qui tombent dans ces classes sont d’interessants points de départ pour de futures recherches. Des découvertes inestimables ont été et seront encore faites en biologie moléculaire grâce à l’étude des transcriptomes dans des organismes variés, analysés dans différentes conditions. Cependant, il est devenu clair qu’à cause de la présence de nombreuses étapes de régulation après la transcription, dont l’épissage alternatif, seule l’analyse des protéomes permettra d’obtenir une vision complète de la biologie de la cellule.
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Mangitli, Irem. "Infinity in time and space". College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1458.
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Thesis (M.F.A.) -- University of Maryland, College Park, 2004.Thesis research directed by: Dept. of Art. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Boué, Stéphanie Stévenin James Bork Peer. "Transcripts in space and time". Strasbourg : Université Louis Pasteur, 2006. http://eprints-scd-ulp.u-strasbg.fr:8080/499/01/Boue_PhD_Transcripts_Space_Time_2006.pdf.
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Ghosh, Sourav. "Thermodynamics of Margulis Space Time". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112137/document.
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Dans ma thèse, je décris les feuilles stables et instables pour le flot géodésique sur l’espace des géodésiques non-errant de type espace d’un espace-temps de Margulis et je démontre des propriétés de contraction des feuilles sous le flot. Je montre aussi que la monodromie d’un espace-temps de Margulis est une représentation Anosov dans un groupe de Lie non semisimple. En outre, je montre que les applications limites et reparamétrisation varient analytiquement. Enfin, à l’aide de la propriété métrique Anosov, nous définissons la métrique de pression sur l’espace modulaire des espaces-temps de Margulis sans pointes et je démontre qu’elle est définie positive sur les sections d’entropie constanteIn my thesis I describe the stable and unstable leaves for the geodesic flow on the space of non-wandering spacelike geodesics of a Margulis Space Time and prove contraction properties of the leaves under the flow. I also show that monodromy of Margulis Space Times are “Anosov representations in non semi-simple Lie groups”. Moreover, I show that the limit maps and reparametrizations vary analytically. Finally using the metric Ansosov property we define the Pressure metric on the Moduli Space of Margulis Space Times without “cusps” and show that it is positive definite on the constant entropy sections
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Rivera, Monica Alexandra. "Slowing Down Time, studies on spatial time". Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33992.
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The experience of time is not fixed by a rigid mathematical measure, instead, it flows at vaying rates.
There are certain occasions in which we would like to extend time with all our force, up to the limit of our stretched arms and further. Conversely there are moments which we'd like to last no more that the sparkle of a flash, but as we all have noticed, those are the longest in our life.
How does the space that we inhabit influence on our perception of time? May we identify especial elements that contribute in one or other sense to accelerate or slowdown the time?
It's said that time and space is an inseparable unity, as two aspects of the same thing. If this is so, then it also must be true that by shaping space in one way or another, we might influence the experience of time through it. Wouldn't it be delightful to believe that we may be magicians of time through manipulation of architecture?Master of Architecture
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Acharya, Om Nath, i Sabin Upadhyaya. "Space Time Coding For Wireless Communication". Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-19424.
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As the demand of high data rate is increasing, a lot of research is being conducted in the field of wireless communication. A well-known channel coding technique called Space-Time Coding has been implemented in the wireless Communication systems using multiple antennas to ensure the high speed communication as well as reliability by exploiting limited spectrum and maintaining the power. In this thesis, Space-Time Coding is discussed along with other related topics with special focus on Alamouti Space-Time Block Code. The Alamouti Codes show good performance in terms of bit error rate over Rayleigh fading channel. The performance of Altamonte’s code and MIMO capacity is evaluated by using MATLAB simulation.
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Healy, Eithne. "Allegories of space : allegories of time". Thesis, University of East London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532879.
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Taking identity as a point of departure, I examine specific cultural and philosophical concerns relating to ideas of alienation, and consider the impact of buildings and space - and their more universal implications - on the formation of historical, psychological and social perceptions of (the) `self. My research has introduced me to new writers, theorists and practitioners including Anthony Vidler's meditations on the spatial and emotional anxieties that architecture evokes. - Artists and filmmakers I refer to include, Anslem Kiefer, Werner Herzog, Peter Doig and Stan Douglas. In forming the 'modern' perception of the world, Nicholas Temple considers Friedrich Hölderlin's understanding of topography as the decisive link to a 'mythical past and a transient present'. ' I reflect on Hölderlin's perspective of the world through the notion of 'divine absence' and Heidegger's interpretation of that understanding on the nature of being. Documentation of my practice consists of colour image video stills and text from 2003-2008. CONCLUSION I consider some of the core ideas explored and developed during the doctorate programme and suggest future projects. Temple, N. (2007) Disclosing Horizons: Architecture, perspective and redemptive space. Oxon: Routledge, p. 5.
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Carlbaum, Oskar, i Michael Novén. "Real-Time Magnetohydrodynamic Space Weather Visualization". Thesis, Linköpings universitet, Medie- och Informationsteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-141686.
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This work describes the design and implementation of space weather related phenomena within the interactive astro-visualization software OpenSpace. Data sets from the Community Coordinated Modelling Center (CCMC) at the National Aeronautics and Space Administration (NASA) were used to implement time-varying high-resolution solar imagery from space observatory spacecraft and time-varying field lines from the different models produced at the CCMC. The obtained results were used to take an audience on an interactive journey through the solar system, at the worlds first ever live planetarium show about space weather.
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Scott, Susan M. "New approaches to space-time singularities /". Title page, contents and abstract only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09phs429.pdf.
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Huang, Li-Ke. "Space-time DS-CDMA communication systems". Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397681.
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