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Johnsson, Rocky. "The Orb." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4937.
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Allteftersom forskningen inom Human Computer interaction (HCI) fortskrider konstrueras det allt fler innovativa sätt att interagera med spelkonsoller. Då fler sätt att interagera med spelkonsoller utvecklas förbättras även förutsättningarna för spelbranschen att öka interaktionen i spelen. Den senaste generationen av spelkonsoller har kommit fram med egna lösningar och innovativa sätt att öka spelupplevelsen och interaktionen. Nintendo Wii har t.ex. en rörelsesensor som reagerar på rörelserna av handkontrollen, och Xbox Kinect reagerar med hjälp av en kamera som läser av kroppens rörelser och Playstation Move reagerar på en kombination av en kamera och en kontroll med sensorer. Handkontrollens design har inte förändrats mycket under de senaste konsol-generationerna om man bortser från Nintendo Wii som formade sin kontroll som en stav. Kontrollen har haft en bumerangform, som med tiden har fått fler knappar och i senare generationer analoga spakar. Kontrollen ligger bra i handen och designen ger en bra spelupplevelse i vissa genrer av spel. I vissa spel ökas interaktionen med tillbehör, som t.ex. musikinstrument för karaokespel som underlättar för spelaren. Undantaget är FPS-genren, där precisionen kompenseras med hjälp av mjukvara. Frågeställningen i denna avhandling är om man med hjälp av en ny handkontrollsdesign i formen av en sfär kan öka precisionen i FPS-spel. Designen avviker från den traditionella, och i kontrollen används modern teknologi för att kunna registrera lutningar av handkontrollen. Med hjälp av intervjuer kan jag utvisa huruvida kontrollen förbättrar precisionen och spelkänslan, och vilka områden som behövs förbättras. Slutsatsen blev att testerna inte var tillräckliga för att rättvist kunna säga om det misslyckades eller lyckades då respondenterna som var missnöjda med känsligheten trots allt gillade styrningen.
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Bourque, Donald. "CUDA-Accelerated ORB-SLAM for UAVs." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-theses/882.
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"The use of cameras and computer vision algorithms to provide state estimation for robotic systems has become increasingly popular, particularly for small mobile robots and unmanned aerial vehicles (UAVs). These algorithms extract information from the camera images and perform simultaneous localization and mapping (SLAM) to provide state estimation for path planning, obstacle avoidance, or 3D reconstruction of the environment. High resolution cameras have become inexpensive and are a lightweight and smaller alternative to laser scanners. UAVs often have monocular camera or stereo camera setups since payload and size impose the greatest restrictions on their flight time and maneuverability. This thesis explores ORB-SLAM, a popular Visual SLAM method that is appropriate for UAVs. Visual SLAM is computationally expensive and normally offloaded to computers in research environments. However, large UAVs with greater payload capacity may carry the necessary hardware for performing the algorithms. The inclusion of general-purpose GPUs on many of the newer single board computers allows for the potential of GPU-accelerated computation within a small board profile. For this reason, an NVidia Jetson board containing an NVidia Pascal GPU was used. CUDA, NVidia’s parallel computing platform, was used to accelerate monocular ORB-SLAM, achieving onboard Visual SLAM on a small UAV. Committee members:"
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Bui, Don T. "ORB, object recognition for real-time autonomous mobile robot navigation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ43999.pdf.
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Bui, Don T. "ORB : object recognition for real-time autonomous mobile robot navigation." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20795.
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An object recognition system called ORB1 is proposed and implemented for use on a mobile robot. ORB utilizes the QUADRIS sensor platform developed at the Centre for Intelligent Machines (CIM) at McGill University, which is composed of two BIRIS2 laser rangefinders. ORB performs a series of sensory and perceptual tasks in conjunction with a mobile robot control architecture called SPOTT. ORB's main task is to sense the mobile robot's surroundings and provide laser range data, in the form of line segments, for SPOTT's map database. In an office environment, ORB also identifies and labels the structural objects (i.e., walls, doors) in this map. While navigating through an office space, the mobile robot may be required to search for certain objects in the area. In these scenarios, ORB is used to recognize the movable objects (i.e., chairs, tables and desks).ORB is able to perform its tasks in a fast and efficient manner by using simple models to represent the structural and movable objects in its database. ORB's recognition procedures only require sparse sets of range scans to identify the aforementioned objects. The structural object models are built from prior knowledge of the office environment. For example, the doorway model would consist of the known doorway widths found on the experimental office floor. ORB has been tested extensively in the CIM environment, but it can also be applied to any office space provided the structural dimensions are known a priori. ORB's models for the movable objects are idealized descriptions with the object's surfaces represented by planes. The physical dimensions of the movable object models are defined by Architectural Standards, as office furniture are built to conform to these standards.
1A system for O&barbelow;bject R&barbelow;ecognition and map B&barbelow;uilding using the QUADRIS sensor platform on a mobile robot. 2Official trademark of the National Research Council of Canada.
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Tarakanova, Anna. "Spider's orb web : implications of structural hierarchies to materials-based evolution." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101842.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2015.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 65-69).
Among a myriad of spider web geometries, the orb web presents a fascinating, exquisite example in architecture and evolution. Its structural component, the silk protein, is an exemplary natural material because its superior properties stem intrinsically from the synergistic cooperativity of hierarchically-organized components, rather than from the particular properties of the building blocks themselves. By bridging together different levels of hierarchy in the web, we elucidate the mechanisms by which structure at each composite level contributes to organization and material phenomena at subsequent levels, demonstrating that the web is a highly adapted system where both material and hierarchical structure across all length-scales is critical for its functional properties. Further, the material hierarchy scheme within the orb web is exploited to address questions of silk evolution. Spider orb webs can be divided into two categories distinguished by the capture silk used in construction: cribellate orb webs composed of pseudoflagelliform silk coated with dry cribellate threads and ecribellate orb webs, composed of viscid flagelliform silk fibers, coated by adhesive glue droplets. Cribellate capture silk is generally stronger but less extensible than viscid capture silk and a body of phylogenic evidence suggests that cribellate capture silk is more closely related to the ancestral form of capture spiral silk. Here, we use a coarse-grained web model to investigate how the mechanical properties of spiral capture silk affect the behavior of the web system, illustrating that more extensible capture spiral silk yields a decrease in the web's energy absorption, suggesting that the function of the capture spiral shifted from prey capture to other structural roles. Additionally, we observe that in webs with more extensible capture silk, the effect of thread strength on web performance is reduced, indicating that thread extensibility is a dominant driving factor in web diversification. In this thesis, we propose a novel model-centered materials-hierarchy based approach to studying evolutionary trends and suggest possible applications for other fields.
by Anna Tarakanova.
S.M.
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Poeta, Maria Rita Muniz. "The orb-weaving spider Eustala described from southern Brazil : (Araneae, Araneidae)." Pontifícia Universidade Católica do Rio Grande do Sul, 2013. http://hdl.handle.net/10923/5311.
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Previous issue date: 2013The Araneidae Clerck, 1757 has 3029 species in 168 genera. They are common in nature, weaving orbicular bidimensional webs on trees and bushes and, apparently, have nocturnal habits. Spiders of Eustala Simon, 1895 occur throughout all American continent and it seems to be the most speciose Neotropical Araneidae genus. The genus contains about 90 species, 16 of which have been described from Brazil. The male is characterized by the palpus with only one patellar macroseta; conic, whitish hanging down posteriorly median apophysis and the terminal apophysis is a sclerotinized extension, resting on a transparent, baloon-like, subterminal apophysis. The females are characterized by the epigynum with ringed scape pointed anteriorly. The most common pattern color on the abdomen dorsum is a folium. However, this could vary from specimen to specimen, being more or less pigmented. Although frequently collected, species of this genus are poorly known, at present, there are just a few studies on the genus from South America. Thus this study aims to contribute to the knowledge of the Brazilian species of Eustala, through diagnosis and illustrations of species from Southern Brazil, giving continuity to the work initiated about the genus on Rio Grande do Sul state. In order to carry out this study, Eustala material from several arachnological collections was analyzed. Illustrations were made with the aid of camera lucida coupled to the stereoscopic microscope. The left male palpus was illustrated on mesal and ventral views; the epigynum was illustrated on ventral, posterior and lateral views. In current study Eustala ulecebrosa (Keyserling, 1892), from Rio Grande do Sul and E. mourei Mello-Leitão, 1947, from Paraná are illustrated and redescribed. Eight new species from Southern Brazil are described: E. guarani sp. nov., from Paraná; E. catarina sp. nov., from Santa Catarina and E. ericae sp. nov., E. cidae sp. nov., E. lisei sp. nov., E. cuia sp. nov. and E. farroupilha sp. nov, all based on males and females and E. eldorado sp. nov., based only on males, from Rio Grande do Sul. Eustala albiventer (Keyserling, 1884), E. taquara (Keyserling, 1892), E. minuscula (Keyserling, 1892), E. itapocuensis Strand, 1916, E. photographica Mello-Leitão, 1944, E. levii and E. palmares, Poeta, Marques & Buckup, 2010 present new distribution records from Brazil and E. perfida Mello-Leitão, 1947 has a first record in Uruguay.
A família Araneidae Clerck, 1757 agrega 3029 espécies em 168 gêneros. Aranhas comuns na natureza, tecem teias orbiculares bidimensionais na vegetação arbustiva e arbórea e, aparentemente, têm hábitos noturnos. Eustala Simon, 1895 ocorre em todo o continente Americano e parece ser o gênero Neotropical de Araneidae com maior riqueza de espécies. O gênero contém cerca de 90 espécies, das quais 16 são descritas do Brasil. O macho caracteriza-se pelo palpo com única macrocerda patelar, apófise média cônica e esbranquiçada, voltada posteriormente e pela apófise terminal que é um prolongamento esclerotinizado sobre a apófise subterminal, em forma de balão transparente. As fêmeas se caracterizam pelo epígino com escapo dirigido anteriormente, podendo ser liso ou anelado. O padrão de colorido frequente no dorso do abdômen é o fólio, no entanto, muitos espécimes variam na coloração, podendo ser mais ou menos pigmentados. Apesar de frequentemente colecionadas as espécies desse gênero são pouco conhecidas, visto que são escassos os trabalhos taxonômicos do gênero para a América do Sul. Assim, este estudo visa contribuir para o conhecimento das espécies brasileiras de Eustala, através da diagnose e ilustração das espécies dos estados da região Sul do Brasil, dando continuidade ao trabalho iniciado sobre o gênero no estado do Rio Grande do Sul. Para a execução deste projeto, o material de Eustala depositado nas coleções aracnológicas das regiões Sudeste e Sul do Brasil foram examinados. As ilustrações foram realizadas com o auxílio de câmara-clara acoplada ao microscópio estereoscópio. O palpo esquerdo foi ilustrado nas vistas ventral e mesial e o epígino nas vistas ventral, posterior e lateral. No presente trabalho são redescritas Eustala ulecebrosa (Keyserling, 1892), do Rio Grande do Sul e E. mourei Mello-Leitão, 1947, do Paraná. Oito novas espécies são descritas do Sul do Brasil: E. guarani sp. nov., do Paraná; E. catarina sp. nov., de Santa Catarina e E. ericae sp. nov., E. cidae sp. nov., E. lisei sp. nov., E. cuia sp. nov. e E. farroupilha sp. nov., todas baseadas em machos e fêmeas, e E. eldorado sp. nov., baseada em exemplar macho, do Rio Grande do Sul. As espécies Eustala albiventer (Keyserling, 1884), E. taquara (Keyserling, 1892), E. minuscula (Keyserling, 1892), E. itapocuensis Strand, 1916, E. photographica Mello-Leitão, 1944, E. levii e E. palmares, Poeta, Marques & Buckup, 2010 apresentam novos registros de ocorrência no Brasil e E. perfida Mello-Leitão, 1947, tem primeiro registro para o Uruguai.
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Steele, Rebecca. "Chronoecology of a Cave-dwelling Orb-weaver Spider, Meta ovalis (Araneae: Tetragnathidae)." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3713.
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Circadian clocks enable coordination of essential biological and metabolic processes in relation to the 24-hour light cycle. However, there are many habitats that are not subject to this light cycle, such as the deep sea, arctic regions, and cave systems. This study analyzes the circadian pattern of isolated populations of a subterranean spider, Meta ovalis from two Tennessee caves and five Indiana caves. Locomotor activity was recorded with TriKinetics LAM50 Locomotor Activity Monitor under a 12-hour light (L), 12-hour dark (D) (LD 12:12) cycle preceding total darkness (DD). Significant differences were found within and among populations found in Tennessee cave systems in average free running period and onset of locomotor activity. Selection, drift, and genetic fixation are explored as the causes of variation in the present study, using M. ovalis as the model organism. All five caves in Indiana show little variation, whereas both Tennessee caves show large interindividual variation.
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Steele, Rebecca, Clinton Elmore, Rebecca Wilson, Darrell James Moore, Blaine W. Schubert, and Thomas Charles Jones. "Chronoecology of the Cave Dwelling Orb-Weaver Spider, Meta ovalis (Araneae: Tetragnathidae)." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/198.
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Circadian clocks are endogenous time keeping mechanisms that are ubiquitous among animals. They enable coordination of many essential biological and metabolic processes in relation to the 24 hour light cycle on earth. However, there are many habitats on earth that are not subject to this light cycle. This study aims to look at the potential genetic drift of the circadian rhythm of a subterranean spider, Meta ovalis, as well as gathering general natural history information on this under-studied spider. This study will fill general gaps in knowledge of this spider and its habitat, highlight the importance of studying organisms within a subterranean environment, and place importance on cave conservation and acquiring knowledge of these specialized, and sensitive species. This study integrates circadian and foraging theory to evaluate species as circadian specialists and generalists based on how narrowly or widely their activity is spread over the 24 h cycle. We suggest that M. ovalis benefits from a generalist strategy, showing small bursts of focused activity widely dispersed across the 24 h cycle, allowing it to capture prey opportunistically whenever it is available. Live spiders were collected from area caves, monitored in an environment controlled for light and temperature, and returned to their cave of origin. The activity of each spider was analyzed for differences in circadian activity among and between populations to determine if there is a significant drift of the circadian strategy between isolated populations of Meta ovalis. We expect to see a different circadian strategy implemented between populations due to drift from the spiders being isolated from other populations.
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Wieslander, Johan. "Digitizing notes using a moving smartphone : Evaluating Oriented FAST and Rotated BRIEF (ORB)." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302554.
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This thesis investigates the problem of tracking objects for an Augmented Reality (AR) setting. More specifically, the issue of tracking Post-It® notes to be used in a Mobile Augmented Reality (MAR) application using the Oriented FAST and Rotated BRIEF (ORB) keypoint extractor and descriptor, is investigated. This problem explores the relatively new and unexplored territory of tracking specific objects in real-time on mobile devices. Since MAR is becoming more prevalent, this is a field that is likely to be explored in more depth in the future. A solution was implemented in an existing note scanning application. Test sequences, with accompanying ground truth, were created for the applicable scenarios. The test sequences were used to reliably verify and evaluate the implementation with regard to precision, recall, accuracy, and speed. The ground truth was generated in a Mixed-Initiative Computing (MIC) application. The results show that tracking using only ORB is not viable if high precision, recall, or accuracy is needed. While tracking via ORB may not be viable as a standalone solution, the thesis describes methods for using it in a MIC setting, which may be viable.Denna masteruppsats undersöker spårning av objekt för användning i en AR- miljö. Mer specifikt så undersöks spårning av Post-It®-notiser för användning i en MAR applikation med hjälp av ORB. Det här problemet utforskar det relativt nya och outforksade området rörande spårning av specifika objekt i realtid på mobila enheter. Eftersom MAR blir alltmer vanligt förekommande, så kommer det här forskningsområdet troligtvis att utforskas mer ingående i framtiden. En lösning implementeras utöver en existerande applikation for att skanna notiser. Testsekvenser, med ackompanjerande faktisk data skapades för de relevanta scenarierna. Dessa testsekvenser användes för att kunna verifiera och utvärdera implementationen med avseende på precision, återkall, träffsäkerhet och snabbhet. All faktisk data genererades i en MIC-applikation. Resultaten visar att spårning med enbart ORB är inte genomförbart om höga krav på precision, återkall, träffsäkerhet eller snabbhet behövs. Medan spårning via ORB måhända inte är genomförbart i nuläget som en självstående lösning, så har den här mastersuppsatsen beskrivit metoder för att använda ORB i en MIC-applikation. Något som faktiskt kan vara genomförbart.
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Alicea-Serrano, Angela M. "Diversification of Spider Silk Properties in an Adaptive Radiation of Hawaiian Orb-weaving Spiders." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1493996437508754.
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Hammontree, Sarah. "Evaluating the Habitat Requirements of the Golden Orb Mussel (Quadrula Aurea) for Conservation Purposes." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271827/.
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Many freshwater mussels are imperiled, due to a number of interrelated factors such as habitat alteration, degradation of water quality, and impoundments. The Golden Orb mussel (Quadrula aurea, I. Lea, 1859) is endemic to the state of Texas and is currently a candidate for the endangered species list, as the number of known populations has been declining in recent years. Little is currently known about Q. aurea aside from basic distribution data. This study is focused on evaluating a combination of macro-habitat and micro-habitat variables to determine their influence on the distribution and density of this species. Macro-habitat variables, including dominant land cover, surface geology, and soil erodibility factor, did not have a significant relationship with mussel distributions. The best model of micro-habitat variables that impacts the Q. aurea distributions is comprised of relative substrate stability (RSS) at moderate flows and current velocity at low flows. For all mussel species in this study, current velocity at low flows is the primary variable that influences distribution. Q. aurea are associated with habitats where larger sediment particles (large gravel and cobble) help to stabilize the substrate in areas with higher current velocities. An understanding of the preferred habitats for Q. aurea can be used to help focus conservation efforts and practices.
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Markezich, Allan Louis Riddle Wayne A. "Late season physiological adaptations of two syntopic araneid spiders." Normal, Ill. Illinois State University, 1987. http://wwwlib.umi.com/cr/ilstu/fullcit?p8726505.
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Thesis (Ph. D.)--Illinois State University, 1987.Title from title page screen, viewed August 16, 2005. Dissertation Committee: Wayne A. Riddle (chair), D. Reed Jensen, Steven A. Juliano, Charles F. Thompson, James N. Tone. Includes bibliographical references (leaves 103-118) and abstract. Also available in print.
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Orb, Richard K. [Verfasser], and H. H. [Akademischer Betreuer] Hahn. "Rückhalt hygienerelevanter Bakterien in mischwasserbeschickten Retentionsbodenfiltern : konstruktive Hinweise / Richard K. Orb. Betreuer: H. H. Hahn." Karlsruhe : KIT-Bibliothek, 2012. http://d-nb.info/1023905817/34.
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Long, Mitchell, Thomas C. Jones, and Darrell Moore. "Temporal Factors Affecting Foraging Patterns of a Diurnal Orb-weaving Spider, Micrathena gracilis (Araneae: Araneidae)." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/asrf/2020/presentations/54.
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Many studies have investigated the ecological factors that affect behavior in Micrathena gracilis, a diurnal orb-weaving spider that forages exclusively on flying insects during the day. However, none yet have considered how the temporal distributions of prey and predator occurrences shape their daily behavioral rhythms, especially web construction which involves a heavy energetic investment well in advance of potential nutritional benefit. Recently, other spider species have been found to express significant circadian plasticity, suggesting that circadian clock-controlled rhythms may play a larger role in niche partitioning than once thought. Despite the appearance of significant insect abundance in the evenings, M. gracilis individuals stop foraging, take down their webs, and retreat before they can capitalize on this opportunity. Is the nutritional benefit of this forfeited prey significant compared to what they collect during the day, and if so, what potential cost might justify opting out of this potential gain? To investigate, sticky traps for prey collection and a camera array for recording predator activity were used at a local field site to survey what risks and rewards these spiders face throughout the 24-hour day. Spider activity in a lab environment and web captures in the field were also used to confirm behavioral patterns and nutrient uptake throughout the day. It was found that significant prey biomass is given up shortly after the time that spiders typically retreat, suggesting that the spiders truly forfeit this prey and do not simply retreat due to a gradual decrease in overall prey availability. Spiders reliably cease foraging in the early evening and show agitation throughout the night when not comfortably hidden, suggesting that significant extension of foraging behavior may be harshly punished. However, recorded predation events from the camera array were much rarer than anticipated, and no predation was confirmed in the evening. These results support the notion that these spiders’ circadian rhythms are shaped by factors other than prey availability, but more work is necessary to identify these factors
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Long, Mitchell Davis. "Temporal Factors Affecting Foraging Patterns of a Diurnal Orb-weaving Spider, Micrathena gracilis (Araneae: Araneidae)." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/honors/535.
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Several studies have investigated the ecological factors that affect behavior in Micrathena gracilis, a diurnal orb-weaving spider that forages on flying insects during the day. However, none yet have considered how the temporal distributions of prey and predator occurrences shape their daily behavioral rhythms, especially web construction, which involves a heavy energetic investment well in advance of potential nutritional benefit. Recently, several orb-weaving spider species have been shown to exhibit a variety of abnormal rhythms, suggesting that circadian clock-controlled rhythms may play an unexpected role in behavioral evolution. Despite the appearance of significant insect abundance in the evenings, M. gracilis individuals stop foraging, take down their webs, and retreat before they can capitalize on this opportunity. Is the nutritional benefit of this forfeited prey significant compared to what they collect during the day, and if so, what potential cost might justify opting out of this potential gain? To investigate, sticky traps for prey collection and a camera array for recording predator activity were used at a local field site to survey what risks and rewards these spiders face throughout the 24-hour day. Spider activity and web captures in the field were also used to confirm behavioral patterns and capture success throughout the day. It was found that spiders begin foraging when prey becomes available but cease while prey is still abundant. These observations appear to support a theoretical model of behavioral decisions under predation risk. However, recorded predation events were rare, and predation was not confirmed outside of the foraging timeframe. These results support the notion that the circadian rhythm of Micrathena gracilis is shaped by factors other than prey availability, but the theoretical pressure from predation risk requires further investigation.
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Kondreddy, Mahendra. "Image Recognition Techniques for Optical Head Mounted Displays." Master's thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-218600.
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The evolution of technology has led the research into new emerging wearable devices such as the Smart Glasses. This technology provides with new visualization techniques. Augmented Reality is an advanced technology that could significantly ease the execution of much complex operations. Augmented Reality is a combination of both Virtual and Actual Reality, making accessible to the user new tools to safeguard in the transfer of knowledge in several environments and for several processes.
This thesis explores the development of an android based image recognition application. The feature point detectors and descriptors are used as they can deal great with the correspondence problems. The selection of best image recognition technique on the smart glasses is chosen based on the time taken to retrieve the results and the amount of power consumed in the process. As the smart glasses are equipped with the limited resources, the selected approach should use low computation on it by making the device operations uninterruptable. The effective and efficient method for detection and recognition of the safety signs from images is selected. The ubiquitous SIFT and SURF feature detectors consume more time and are computationally complex and require very high-level hardware components for processing. The binary descriptors are taken into account as they are light weight and can support low power devices in a much effective style. A comparative analysis is being done on the working of binary descriptors like BRIEF, ORB, AKAZE, FREAK, etc., on the smart glasses based on their performance and the requirements. ORB is the most efficient among the binary descriptors and has been more effective for the smart glasses in terms of time measurements and low power consumption.
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Watanabe, Takeshi. "Ecological study on plasticity and function of the orb-web design in the spider Octonoba sybotides." 京都大学 (Kyoto University), 2000. http://hdl.handle.net/2433/181146.
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Andersson, Oskar, and Marquez Steffany Reyna. "A comparison of object detection algorithms using unmanipulated testing images : Comparing SIFT, KAZE, AKAZE and ORB." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186503.
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While the thought of having computers recognize objects in images have been around for a long time it is only in the last 20 years that this has become a reality.One of the first successful recognition algorithms was called SIFT and to this day it is one of the most used. However in recent years new algorithms have beenpublished claiming to outperform SIFT. It is the goal of this report to investigate if SIFT still is the top performer 17 years after its publicationor if the newest generation of algorithms are superior. By creating a new data-set of over 170 test images with categories such as scale, rotation, illumination and general detectiona thorough test has been run comparing four algorithms, SIFT, KAZE, AKAZE and ORB. The result of this study contradicts the claims from the creators of KAZE and show thatSIFT has higher score on all tests. It also showed that AKAZE is at least as accurate as KAZE while being significantly faster. Another result was that whileSIFT, KAZE and AKAZE were relatively evenly matched when comparing single invariances that changed when performing tests that contained multiple variables. Whentesting detection in cluttered environments SIFT proved vastly superior to the other algorithms. This led to the conclusion that if the goal is the best possibledetection in every-day situations SIFT is still the best algorithm.
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Watts, James C. "Diel Patterns of Foraging Aggression and Antipredator Behavior in the Trashline Orb-weaving Spider, Cyclosa turbinata." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etd/2334.
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Few studies have rigorously assessed the adaptive value of diel rhythms in animals. We laid the groundwork for assessing the adaptive rhythm hypothesis by assaying diel rhythms of foraging and antipredator behavior in the orb-weaving spider Cyclosa turbinata. When confronted with a predator stimulus in experimental arenas, C. turbinata exhibited thanatosis behavior more frequently and for longer durations during the day. However, assays of antipredator response within webs revealed more complex diel patterns of avoidance behaviors and no pattern of avoidance behavior duration. Assays of prey capture behavior found that the likelihood of exhibiting prey capture behavior varied significantly across times of day and test subjects, but only test subject predicted attack latencies. Although C. turbinata foraging aggression changed over the diel cycle, we found no evidence of a trade-off between foraging behavior and predator vigilance. However, overall patterns of vigilance may be masked by diel changes in antipredator strategies.
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Nordell, Sabina. "Mia and the Orb : Using multi-modal interaction design for an intimate UTI home-based test experience." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292786.
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Medical technologies are increasingly moving into the home-setting, and they need to take potential users' experiences into account doing so. This paper explores how interactive point-of-care medical technologies can support and reassure potential users in their waiting during nighttime. Using Research through Design, it presents Mia & the Orb, an interactive home-based for detecting Urinary Tract Infections (UTI). The interactive test incubator guides the user's breathing and provides warmth, orbiting around moments of waiting during nighttime. Using Participatory Design Fiction to unravel user values and a material directed design approach on the physical prototyping phase, it was found that making medical technologies soft, warm and comforting opens up new opportunities to help during painful and helpless moments of waiting.Medicinsk teknik blir alltmer vanligare i hemmet och de måste ta hänsyn till potentiella användares upplevelser. Denna uppsats utforskar hur interaktiva vårdmedicinska tekniker kan stödja och lugna potentiella användare i deras väntan under natten. Med hjälp av ”Research through Design” presenterar den Mia & the Orb, ett interaktivt hembaserat test för att upptäcka urinvägsinfektioner (UVI). Den interaktiva testinkubatorn guidar användarens andning och ger värme under prövande stunder av väntan under natten. Genom att använda ”Participatory Design Fiction” för att upptäcka användares värderingar och en materialstyrd designmetod under den fysiska prototypfasen, antyder att göra medicinsk teknik mjuk, varm och tröstande öppnar upp nya möjligheter att hjälpa till under smärtsamma och hjälplösa ögonblick.
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Domingue, Jean-Laurent. "Exploring the Production of “Dangerous Persons” in Forensic Psychiatry: A Critical Ethnography of the Ontario Review Board (ORB)." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42688.
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Forensic psychiatric nursing is a specialty at the junction of two well-researched intersecting systems with two different mandates: criminal justice (public protection) and health care (public good). Nurses’ involvement at one of the systems’ points of juncture, review board (RB) hearings, has largely been left unexplored. At RB hearings, a panel of legal and health care professionals determines if persons unfit to stand trial (UST) or not criminally responsible on account of mental disorder (NCRMD) represent significant threats to the safety of the public, and orders conditions aimed at keeping the community safe. The aim of this research project was to explore how psychiatric and public safety discourses construct the identity of persons UST or NCRMD during RB hearings, and nurses’ contribution to such identity construction. Critical ethnography methodology was employed, mobilizing three data sources: interviews with forensic psychiatric nurses, observations of RB hearings, and RB documentary artifacts. A poststructuralist lens was used to discern how RB culture produces truths about persons UST or NCRMD that sustain the hegemony of public safety and psychiatric discourses. The main finding was that the forensic psychiatric structure leverages therapeutic nursing interventions and documentation as evidence of deviancy, so that persons UST or NCRMD can be objectified and produced as dangerous, prior to socially rehabilitating them. Discursive structures sustaining the forensic psychiatric system inscribe nursing care within a disciplinary scheme, rendering it coercive and punitive. Thus, a care-and-custody dichotomy is insufficient to explain the complex processes at play in forensic psychiatry. These findings have implications for research, practice, and education in forensic psychiatric nursing, nursing ethics, and other nursing specialties on the medico-legal borderland.
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Stellwagen, Sarah Day. "Structure and Function of the Viscous Capture Spiral and its Relationship to the Architecture of Spider Orb Webs." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/75178.
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Spider orb-webs have evolved to intercept prey, absorb and dissipate the kinetic energy from prey impact, and retain prey until a spider can subdue their catch. Orb-web structure and function engages scientists from many disciplines, including engineering, behavior, materials science, ecology, and evolution. This dissertation examines the sticky capture spiral component of an orb-web. This composite material is made of supporting fibers covered in sticky glue droplets. These threads are both adhesive and extensible, and their performance is influenced by ambient conditions. The questions I addressed are framed in an ecological context, although they also add to our understanding of materials science. The results of the first study showed that temperature increased the viscosity of glycoproteins within Argiope aurantia droplets, mediating the effect of daily humidity changes, an important environmental effect on the glue's performance. The second study demonstrates that capture spiral droplets of spiders that build webs in habitats ranging from full sun to shade and nocturnal species (Argiope aurantia, Leucauge venusta, Neoscona crucifera, Verrucosa areenata, Micrathena gracilis) is resistant to degradation after a day's worth of UVB exposure. Conversely, after the equivalent of two days of UVB exposure the glue degrades in webs built by M. gracilis that build webs in the shade and N. crucifera, a nocturnal species. The less harsh UVA has little affect on capture spiral glue function, both for species that build webs in full sun and those that build webs at night. The third study documented web asymmetry in Argiope trifasciata orb-webs and identified differences in droplet characteristics across the webs. These spiders differently allocated resources, with the bottom region of the web having twice the droplet volume as the top, and half the ratio of aqueous to glycoprotein material as the inner droplets. Additionally, during foraging times, the bottom of the web experiences higher humidity than the top, which has the potential to increase droplet toughness in this region. This study expands the understanding of web asymmetry by examining the differences in glue characteristics as an additional level of flexibility for web fine-tuning.Ph. D.
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Tiemeier, Mark L. "The Roles of Feeding State, Aggression and Habitat Structure on Group Foraging in a California Orb Weaving Spider." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1321888727.
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Zimmer, Stefanie M. Verfasser], and Jutta M. [Akademischer Betreuer] [Schneider. "Mating strategies and inbreeding in the orb-weaving spider genus Argiope (Araneae: Araneidae) / Stefanie M. Zimmer. Betreuer: Jutta Schneider." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2014. http://d-nb.info/105442232X/34.
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Pollak, Cynthia Catherine Nichols. "Mechanical and optical analyses provide a network model for spiral silk from the orb web of the spider Araneus diadematus." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30274.
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Glue-coated spiral silk from Araneus diadematus orb webs is stretchy compared to the stiff and inextensible frame silk. This thesis examines whether part of the difference between properties may be due to molecular arrangements, not just the glue. Dry and wet spiral samples had average diameters of 2.2 and 3.1 microns and a non-circular cross-section with an average ellipticity of 1.5. The lengthwise contraction of wetted samples is a two-phase process, with an average ratio of wet to dry slack length of 0.6. Stress-extension behavior of samples was analyzed according to theories of rubber elasticity. Dry and wet spiral samples have, on average, network chains with 4.8 and 6.6 random segments between crosslinks; frame silk has two. The average shear moduli of wet and dry spiral samples are 0.67 and 0.32 MN/m² (the modulus of wet frame silk is 0.8 MN/m²). Spiral samples' average volume increase from the dry to the wet state is 1.6 compared to frame's volume change of 2.1, possibly because "dry" spiral silk is already partially plasticized. Samples that are stiffer than average in the dry state require higher than average work of extension in both dry or wet states, but stiffer dry samples have proportionately higher reductions in work of extension when wetted, perhaps because most of the extra stiffness is caused by water-labile structures rather than stable crystals. A solution of guanidine hydrochloride rapidly causes silk to lose its mechanical integrity, supporting hypotheses that the major crosslinking mechanism of Araneus silk is non-covalent. Optical analyses yielded a residual birefringence of approximately 1.5x10⁻³ (half that of frame silk, at 3.8xl0⁻³) and a stress-optical coefficient of 2x10⁻⁹ N/m². Both parameters are significantly higher than expected for wholly amorphous rubbers and provide evidence for crystals or aligned glassy regions. Thus, the hypothesis that the network structure of spiral silk is different than frame silk was supported by the significantly different values for chain densities, segment counts, and birefringences.Science, Faculty of
Zoology, Department of
Graduate
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Geurts, Paul. "The Synthetic spider silk fibers spun from Pyriform Spidroin 2, a glue silk protein discovered in orb-weaving spider attachment discs." Scholarly Commons, 2010. https://scholarlycommons.pacific.edu/uop_etds/759.
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Spider attachrnentdisc silk fibers are spun into a viscous liquid that rapidly solidifies, gluing dragline silk fibers to substrates for locomotion or web construction. Here we report the identification and artificial spinning of a novel attachment disc glue silk fibroin, Pyriform Spidroin 2 (PySp2), from the golden orb weaver Nephila c/avipes. MS studies support PySp2 is a constituent of the pyriform gland that is spun into attachment discs. Analysis of the PySp2 protein architecture reveals sequence divergence relative to the other silk family members, including the cob weaver glue silk fibroin PySpl. PySp2 contains internal block repeats that consist of two sub-repeat units: one dominated by Ser, Gin and Ala, the other Pro-rich. Artificial spinning of recombinant PySp2 truncations shows that the Ser-Gln-Ala-rich sub-repeat is sufficient for the assembly of polymeric subunits and subsequent fiber formation. These studies support that both orb- and cob-weaving spiders have evolved highly polar block-repeat sequence with the ability to self-assemble into fibers, suggesting a strategy to allow fiber fabrication in the liquid environment of the attachment discs.
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Wilson, Rebecca. "Investigating the Interaction of Monoamines and Diel Rhythmicity on Anti-Predator Behavior in an Orb-Weaving Spider, Larinioides cornutus (Araneae: Araneae)." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etd/3441.
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Circadian rhythms are ubiquitous among organisms, influencing a wide array of physiological processes and behaviors including aggression. While many neurophysiological mechanisms are involved in the regulation of aggressive behaviors, relatively few studies have investigated the underlying components involved in the interplay between circadian rhythms and aggression. Spiders are an ideal model system for studying circadian regulation of aggression as they are ecologically both predators and prey. Recent studies have revealed a nocturnal orb- weaving spider Larinioides cornutus exhibits a diel and circadian rhythm in anti-predator behavior (i.e. boldness) that can be manipulated by administration of octopamine (OA) and serotonin (5- HT). Dosing of OA increases boldness of an individual while 5-HT decreases boldness levels. Thus, it appears the serotonergic and octopaminergic system are playing a key role in the daily fluctuations of boldness. This study took a holistic approach to investigate OA and 5-HT levels of head tissue and hemolymph (i.e. blood) as well as the genes involved in synthesis, signaling, and degradation of these monoamines throughout the day (0100, 0700, 1300, and 1900 hours) using HPLC-ED and RNA-sequencing. Although endogenous and circulating levels of OA did not significantly fluctuate, putative transcripts involved in synthesis and signaling did increase in relative expression levels at dusk when L. cornutus begins to actively forage for prey. Endogenous and circulating levels of 5-HT also did not significantly change at the four different time points, but clear patterns of upregulation of 5-HT synthesis enzymes as well as some receptor transcripts were upregulated during the day when L. cornutus would be mostly inactive in its retreat. Lastly, monoamine oxidase, a major catabolic enzyme of monoamines in vertebrates and some invertebrates, was identified in L. cornutus and exhibited substrate specificity for OA compared to 5-HT. Together with the higher enzymatic activity at mid-day compared to dusk, MAO appears to be playing a significant role in regulating the OA and 5-HT signaling in L. cornutus. In conclusion, these results allow a unique preliminary perspective on how OA and 5-HT are influencing the diel shifts in aggression-related behaviors in an ecologically dynamic arthropod.
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Motmans, Tim, and Sander Bel. "A novel approach to local multimedia sharing." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15457.
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Sharing locally stored media files like music, videos and pictures has not been user-friendly for a long time now. Nowadays people, when they know where the media is stored, have to use the complicated network shares or external storage solutions like USB sticks, hard drives or even CD/DVDs to share media across different users. When the users do not know where the media is stored, they have to use Internet-based peer- to-peer applications like LimeWire, KaZaa or the Gnutella-network, which requires searching and downloading the media first, before being able to actually make use of it. But what if you do not have an Internet connection, do not want to mess around with external storage solutions nor want to wait while downloading or copying from a (network) device, but still want to make use of the media stored on another computer system? Indeed, nowadays there is not any easy solution that provides a very user-friendly, fast and responsive, flexible and stable solution for this. This problem brought us to our research question: “Is there a very easy solution for sharing or watching media throughout the local network?” After some research we stumbled upon some state-of-the-art technologies, which came very close to what we wanted to achieve, however, still having quite some drawbacks, not suitable as a solution for the problem mentioned above. We decided to innovate and tried to find a solution without any drawbacks while still being very user-friendly. We achieved quite good research results showing that: • Using a client-only network was the most efficient and flexible way to provide a stable network structure; • Java was the best programming language to provide a cross-platform application; • For compatibility with the media sharing itself an object-oriented based indexing storage structure, like db4o, yielded the best flexibility and speed in comparison with SQL or other technologies; • The streaming of the media could be achieved best by making use of Java VLC libraries. The user-friendliness of the demo application that we created was also very good, only a few clicks are sufficient to share your media across the network, no need to bother about user rights and so on. We can conclude that our research can be the base of a very successful innovative media sharing system and strongly believe, with some more adjustments in the future, that it has potential to become a very popular application along the media sharing industry.
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Evans, Samuel C. "Stochastic Modeling of Orb-Web Capture Mechanics Supports the Importance of Rare Large Prey for Spider Foraging Success and Suggests How Webs Sample Available Biomass." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384443854.
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Brunnegård, Oliver, and Daniel Wikestad. "Visual SLAM using sparse maps based on feature points." Thesis, Högskolan i Halmstad, Halmstad Embedded and Intelligent Systems Research (EIS), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34681.
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Visual Simultaneous Localisation And Mapping is a useful tool forcreating 3D environments with feature points. These visual systemscould be very valuable in autonomous vehicles to improve the localisation.Cameras being a fairly cheap sensor with the capabilityto gather a large amount of data. More efficient algorithms are stillneeded to better interpret the most valuable information. This paperanalyses how much a feature based map can be reduced without losingsignificant accuracy during localising. Semantic segmentation created by a deep neural network is used toclassify the features used to create the map, the map is reduced by removingcertain classes. The results show that feature based maps cansignificantly be reduced without losing accuracy. The use of classesresulted in promising results, large amounts of feature were removedbut the system could still localise accurately. Removing some classesgave the same results or even better in certain weather conditionscompared to localisation with a full-scale map.
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Diaz, Candido Jr. "Moth Catching Masters: Analysis Of The Structrual And Mechanical Properties Of The Silk Spun By The Derived Orb-Web Weaver Cyrtarachne akirai." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1524054250656993.
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Barraza, Daniella R. "Factors Influencing Web Tenure in a Tropical Spider and Comparison between Forest and Non-forest Habitats." Scholarship @ Claremont, 2012. http://scholarship.claremont.edu/scripps_theses/166.
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Webs are fundamental to the ecology of Nephila clavipes, the golden orb-weaver spider, because they serve as sites for prey capture, reproduction, competition, predation, and parasitism. In addition to the presence of the female N. clavipes, males and kleptoparasites reside on the web in varying numbers. Webs are also found in clusters with conspecific females. Web site selection and length of web tenure is a behavioral decision vital to the spider’s fitness and the ecology of her species. I conducted a field census to quantify these factors and analyze their influence on web tenure, compare web ecology between a forest and non-forest habitat, as well as explain the significance of N. clavipes’ web as central to many interactions. Web tenure, as well, was influenced differently by the factors between both environments. In the forest habitat, increase in prey capture rate decreased web tenure and inclusion in cluster increased web tenure. In the non-forest habitat, only increase in spider size was related to increased web tenure. There were significant differences between the two habitats in the sizes of the female spider and quantity of males and kleptoparasites. Results also showed that spider size influenced quantity of males and web diameter influenced quantity of kleptoparasites. Explanation of these results can be attributed to the complex relationships among the variables and the consequences of living in habitats impacted by human occupation.
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Welke, Klaas W. Verfasser], and Jutta M. [Akademischer Betreuer] [Schneider. "Mating rates and their adaptive value in orb-web spiders of the genus Argiope (Araneae: Araneidae) / Klaas W. Welke. Betreuer: Jutta M. Schneider." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2012. http://d-nb.info/1024772861/34.
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Marhabaie, Mohammad. "Protein Composition Correlates with the Mechanical Properties of Spider (Argiope Trifasciata) Dragline Silk." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1373908675.
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Conte, Marza Fabián Alejandro. "An evaluation and comparison of long term simultaneous localization and mapping algorithms." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/152947.
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Ingeniero Civil EléctricoEste trabajo consiste en la generación de un set de datos con un respectivo ground truth (medición más confiable) y el uso de los algoritmos ORB-SLAM (Orientated FAST and Rotated BRIEF (Binary Robust Independent Elementary Features) Simultaneous Location And Mapping) y LOAM (Lidar Odometry And Mapping) a modo de entender de mejor forma el problema de SLAM (localización y mapeo simultaneo) y comparar los resultados obtenidos con el ground truth. A modo de entender de mejor forma el set de datos generado, la funcionalidad de los diferentes sensores es explicada. Los sensores utilizados para generar los datos son LIDAR, cámara estéreo y GPS. Este trabajo posee dos mayores etapas, en primer lugar, el GPS es estudiado para establecer las diferentes formas de extraer los datos desde el dispositivo. Una forma es generar un nodo de ROS que mediante comunicación de Bluetooth otorga un mensaje que puede ser leído. Otra forma es presionar tres veces el botón de encendido del GPS, lo que inicia el almacenamiento de los datos en la tarjeta SD. Mientras el primer método entrega mayor cantidad de información, es menos confiable, existiendo la posibilidad de guardar mensajes vacios o perdida de ciertos datos, afectando la tasa de muestreo. Finalmente una combinación de ambos métodos es implementada. Un set de datos de prueba es generado cerca de la Universidad De Chile, para probar que los datos están siendo almacenados correctamente. En el test se concluye que a modo de obtener mejor resultado con el GPS es necesario tomar los datos en zonas con baja cantidad de edificios. Finalmente con los datos y el ground truth el Error Absoluto de la Trayectoria (ATE) es calculado como método de comparación de ambas trayectorias generadas con los algoritmos mencionados. El ATE s la cantidad de energía necesaria para transformar la trayectoria estimada en el ground truth. Dadas ciertas limitaciones en la extracción de los datos estimados, la comparación se realizo entre dos set de datos de prueba, con pequeña cantidad de loops en el camino recorrido. En esta situación los resultados dados por LOAM son mejores que los obtenidos con ORB.SLAM. Pero en un ambiente con mayor cantidad de loops y una trayectoria más larga ORB-SLAM entregaría mejores resultados. ABSTRACT This work consists of the generation of a data-set with ground truth and the use of ORB-SLAM (Orientated FAST and Rotated BRIEF (Binary Robust Independent Elementary Features) Simultaneous Location And Mapping) and LOAM (Lidar Odometry And Mapping) algorithms as a way to better understand SLAM and to compare the ground truth and the data-set generated. To fully understand the data-set generated, the functionality of the different sensors is explained. The sensors used to generate the data-set are LIDAR, Stereo Camera and a GPS. This work is divided into two stages, in the first place the GPS is studied to establish the different ways to extract the data from it. One way is to generate a ROS node that through Bluetooth communication generates a message which is published. The other way is to press three times the button of the GPS to store the data in the GPS micro SD memory. While the first method is capable of store more data per second, it is less reliable, existing the possibility of store an empty message or simply the loss of data in the process. In the end, a combination of the two methods is implemented, modifying the bag file with the data stored in the micro SD. A test-data is generated near the University Of Chile, to prove that the bag file (a type of file that can contain any kind of information such as images, video or text, between others) is correctly generated. In these tests, it was concluded that to obtain better performance of the GPS therefore, obtain a better ground truth, it was necessary to generate the data in a zone with a low quantity of high buildings. Finally with the data-set and the ground truth the Absolute Trajectory Error (ATE) is used as a method to compare the trajectories. The ATE is the amount of energy that would require to transform the estimated trajectory on the ground truth. Since certain limitations of the extraction of the estimated path, the comparison was made between two small data-set which counted with low quantity of closed loops. Therefore the LOAM algorithm shows better results in this trajectory. The ORB-SLAM algorithm shows better results in data-sets with a high quantity of loops in the path.
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Pinzon, Jacqueline. "Montagem revelada : As Poéticas de Isadora. Orb - A metáfora final, de Ricky Seabra e a Un certo punto della vita dovresti impegnarti seriamente e Smettere di fare il ridicolo, de Rodrigo García." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/35395.
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O objetivo desta dissertação é examinar as articulações entre o teatro e as mídias digitais no âmbito dos espetáculos Isadora.Orb- A Metáfora Final (2005), do brasileiro nascido nos Estados Unidos Ricky Seabra, e A Un Certo Punto Della Vita Dovresti Impegnarti Seriamente I Smetteredi Fare Il Ridicolo (2007), do argentino radicado na Espanha Rodrigo García. Considerando o espetáculo teatral como um espaço intermedial por excelência, a análise das obras permitiu a identificação dos procedimentos de composição da cena onde se destacam os princípios operatórios aqui denominados como montagem revelada e acontecimento teatral como experimento.This thesis aims at examining the manner in which the theatre articulates with the digital media in two plays, Isadora.Orb - A Metáfora Final (2005) - by the Brazilian director Ricky Seabra, born in the United States - and A Un Certo Punto Della Vita Dovresti Impegnarti Seriamente e Smettere di Fare Il Ridicolo (2007) - by the Argentinian director Rodrigo García, who has established himself in Spain. By considering that the theatrical spectacle is the intermedial space par excellence, the analysis of these works allows the identification of the procedures employed for the composition of the scene. Among the most important of these, two procedural principles stand out, which are designated here as the revealed montage and the theatre event as an experiment.
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Séraphin, John. "Réalisation d'un intranet : cohérence d'un ensemble réparti et communicant, autour d'une architecture réflexive." Paris 5, 1998. http://www.theses.fr/1998PA05S007.
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Un intranet permet de déployer les applications client-serveur sur l'ensemble des postes de l'entreprise. Il concerne cependant des centaines de personnes, peu familières des technologies et de l'approche hypertexte. Les problèmes de cohérence et de persistance des liens, des modèles de documents, des feuilles de style, d'administration et d'exploitation de l'ensemble, s'avèrent alors d'une acuité inconnue sur l'internet. Nous présentons ici une architecture de base, réflexive, orientée-documents et commune a un intranet qui associe dans sa phase actuelle le web, les bases de données, un métalangage de manipulation de description et des techniques issues de l'intelligence artificielle, pour proposer aux utilisateurs connectes au réseau d'entreprise un accès fiable et uniforme a un ensemble facilement extensible de données locales ou transversales. Ricercar met en place un ensemble de bases de métadonnées fédérées qui décrivent et référencent les objets disponibles. Les serveurs web associes à ces bases composent ainsi dynamiquement les documents correspondants, indépendamment du serveur interroge ou de la localisation effective de ces données. Cette architecture garantit la qualité de service en assurant notamment la permanence des url publiées et la génération dynamique de la structure (l'arborescence) d'un serveur. Elle propose un modèle de navigation uniforme, géré l'authentification et les accès des utilisateurs et, enfin, autorise une surveillance d'ensemble ainsi que des statistiques de fréquentation modulaires et significatives. Suite a ses différents amorçages, Ricercar enregistre, dans cette même base repartie, la description et les références de ses propres données ainsi que celle des méta-scripts utilises pour générer dynamiquement les documents de l'intranet. Cette réflexivité, qui lui permet de manipuler et d'enrichir ses structures, en fait ainsi un système ouvert et adaptatif. Nous analysons donc les spécificités techniques et organisationnelles qui singularisent à notre sens l'intranet par rapport à l'internet ainsi que leur implémentation dans Ricercar, compare à un orb, dont nous présenterons les applications concrètes ainsi que les différentes perspectives d'évolution.
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Soboňa, Tomáš. "Systém pro autonomní mapování závodní dráhy." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442535.
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The focus of this thesis is to theoretically design, describe, implement and verify thefunctionality of the selected concept for race track mapping. The theoretical part ofthe thesis describes the ORB-SLAM2 algorithm for vehicle localization. It then furtherdescribes the format of the map - occupancy grid and the method of its creation. Suchmap should be in a suitable format for use by other trajectory planning systems. Severalcameras, as well as computer units, are described in this part, and based on parametersand tests, the most suitable ones are selected. The thesis also proposes the architectureof the mapping system, it describes the individual units that make up the system, aswell as what is exchanged between the units, and in what format the system output issent. The individual parts of the system are first tested separately and subsequently thesystem is tested as a whole. Finally, the achieved results are evaluated as well as thepossibilities for further expansion.
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Ianni, Andrea. "Applicazioni di realtà aumentata in ambito museale." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9679/.
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La realtà aumentata, unitamente a quella mista, stanno rapidamente prendendo pieno all'interno di molti aspetti della vita umana. Scopo di questo lavoro è di analizzare tecnologie e tecniche esistenti al fine di applicarle ad un caso reale, la rilevazione e la sovrapposizione di un oggetto digitale tridimensionale ad uno presente in un museo.
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Pajgrt, Ondřej. "Distribuovaný informační systém malé firmy." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237251.
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This thesis deals with implementation of distributed information systém for a small construction engineering firm all the way from design to deployment. We will be introduced to distributed applications problems and technologies involved either throught direct relevance or as a support tool for the implementation of the project. In addition, this work will guide us throught complete design and implementation of a final product.
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Ševčík, Zdeněk. "Automatická klasifikace obrazů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413248.
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The aim of this thesis is to explore clustering algorithms of machine unsupervised learning, which can be used for image database classification by similarity. For chosen clustering algorithms is written up a theoretical basis. For better classification of used database this thesis deals with different methods of image preprocessing. With these methods the features from image are extracted. Next the thesis solves of implementation of preprocessing methods and practical application of clustering algorithms. In practical part is programmed aplication in Python programming language, which classifies the database of images into classes by similarity. The thesis tests all of used methods and at the end of the thesis is processed searches of results.
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Karlsson, Christoffer. "Vision based control and landing of Micro aerial vehicles." Thesis, Karlstads universitet, Avdelningen för fysik och elektroteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-73225.
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This bachelors thesis presents a vision based control system for the quadrotor aerial vehicle,Crazy ie 2.0, developed by Bitcraze AB. The main goal of this thesis is to design andimplement an o-board control system based on visual input, in order to control the positionand orientation of the vehicle with respect to a single ducial marker. By integrating a cameraand wireless video transmitter onto the MAV platform, we are able to achieve autonomousnavigation and landing in relatively close proximity to the dedicated target location.The control system was developed in the programming language Python and all processing ofthe vision-data take place on an o-board computer. This thesis describes the methods usedfor developing and implementing the control system and a number of experiments have beencarried out in order to determine the performance of the overall vision control system. Withthe proposed method of using ducial markers for calculating the control demands for thequadrotor, we are able to achieve autonomous targeted landing within a radius of 10centimetres away from the target location.I detta examensarbete presenteras ett visionsbaserat kontrollsystem for dronaren Crazy ie 2.0som har utvecklats av Bitcraze AB. Malet med detta arbete ar att utforma och implementeraett externt kontrollsystem baserat pa data som inhamtas av en kamera for att reglera fordonetsposition och riktning med avseende pa en markor placerad i synfaltet av kameran. Genom attintegrera kameran tillsammans med en tradlos videosandare pa plattformen, visar vi i dennaavhandling att det ar mojligt att astadkomma autonom navigering och landning i narheten avmarkoren.Kontrollsystemet utvecklades i programmeringsspraket Python och all processering avvisions-datan sker pa en extern dator. Metoderna som anvands for att utvecklakontrollsystemet och som beskrivs i denna rapport har testats under ett ertal experiment somvisar pa hur val systemet kan detektera markoren och hur val de olika ingaendekomponenterna samspelar for att kunna utfora den autonoma styrningen. Genom den metodsom presenteras i den har rapporten for att berakna styrsignalerna till dronaren med hjalp avvisuell data, visar vi att det ar mojligt att astadkomma autonom styrning och landning motmalet inom en radie av 10 centimeter.
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Žilka, Filip. "Detektory a deskriptory oblastí v obrazu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-240912.
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This master’s thesis deals with an important part of computer vision field. Main focus of this thesis is on feature detectors and descriptors in an image. Throughout the thesis the simplest feature detectors like Moravec detector will be presented, building up to more complex detectors like MSER or FAST. The purpose of feature descriptors is in a mathematical description of these points. We begin with the oldest ones like SIFT and move on to newest and best performing descriptors like FREAK or ORB. The major objective of the thesis is comparison of presented methods on licence plate localization task.
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Åkerlund, Åsa. "ORD : ORD som BILDER och BILDER som ORD." Thesis, Konstfack, Institutionen för Konst (K), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-3873.
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Pedreira, Carabel Carlos Javier. "Terrain Mapping for Autonomous Vehicles." Thesis, KTH, Datorseende och robotik, CVAP, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174132.
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Autonomous vehicles have become the forefront of the automotive industry nowadays, looking to have safer and more efficient transportation systems. One of the main issues for every autonomous vehicle consists in being aware of its position and the presence of obstacles along its path. The current project addresses the pose and terrain mapping problem integrating a visual odometry method and a mapping technique. An RGB-D camera, the Kinect v2 from Microsoft, was chosen as sensor for capturing information from the environment. It was connected to an Intel mini-PC for real-time processing. Both pieces of hardware were mounted on-board of a four-wheeled research concept vehicle (RCV) to test the feasibility of the current solution at outdoor locations. The Robot Operating System (ROS) was used as development environment with C++ as programming language. The visual odometry strategy consisted in a frame registration algorithm called Adaptive Iterative Closest Keypoint (AICK) based on Iterative Closest Point (ICP) using Oriented FAST and Rotated BRIEF (ORB) as image keypoint extractor. A grid-based local costmap rolling window type was implemented to have a two-dimensional representation of the obstacles close to the vehicle within a predefined area, in order to allow further path planning applications. Experiments were performed both offline and in real-time to test the system at indoors and outdoors scenarios. The results confirmed the viability of using the designed framework to keep tracking the pose of the camera and detect objects in indoor environments. However, outdoor environments evidenced the limitations of the features of the RGB-D sensor, making the current system configuration unfeasible for outdoor purposes.Autonoma fordon har blivit spetsen för bilindustrin i dag i sökandet efter säkrare och effektivare transportsystem. En av de viktigaste sakerna för varje autonomt fordon består i att vara medveten om sin position och närvaron av hinder längs vägen. Det aktuella projektet behandlar position och riktning samt terrängkartläggningsproblemet genom att integrera en visuell distansmätnings och kartläggningsmetod. RGB-D kameran Kinect v2 från Microsoft valdes som sensor för att samla in information från omgivningen. Den var ansluten till en Intel mini PC för realtidsbehandling. Båda komponenterna monterades på ett fyrhjuligt forskningskonceptfordon (RCV) för att testa genomförbarheten av den nuvarande lösningen i utomhusmiljöer. Robotoperativsystemet (ROS) användes som utvecklingsmiljö med C++ som programmeringsspråk. Den visuella distansmätningsstrategin bestod i en bildregistrerings-algoritm som kallas Adaptive Iterative Closest Keypoint (AICK) baserat på Iterative Closest Point (ICP) med hjälp av Oriented FAST och Rotated BRIEF (ORB) som nyckelpunktsutvinning från bilder. En rutnätsbaserad lokalkostnadskarta av rullande-fönster-typ implementerades för att få en tvådimensionell representation av de hinder som befinner sig nära fordonet inom ett fördefinierat område, i syfte att möjliggöra ytterligare applikationer för körvägen. Experiment utfördes både offline och i realtid för att testa systemet i inomhus- och utomhusscenarier. Resultaten bekräftade möjligheten att använda den utvecklade metoden för att spåra position och riktning av kameran samt upptäcka föremål i inomhusmiljöer. Men utomhus visades begränsningar i RGB-D-sensorn som gör att den aktuella systemkonfigurationen är värdelös för utomhusbruk.
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Masaryk, Adam. "Pořizování vysoce kvalitních snímků rovinných povrchů chytrým telefonem." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445564.
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The aim of this thesis is to create a mobile application for Android, which allows users to create high-quality photos of planar objects. User can create multiple photographs of a selected planar object. These photographs are then aligned and combined into one final image. Various shortcomings that can be present in the photographs are filtered.
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Flick, Jeremy Alan. "BLOOD ORE." UKnowledge, 2019. https://uknowledge.uky.edu/english_etds/89.
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While the great poet, James Whitcomb Riley, a native poet from my hometown of Greenfield, has a strong sense of Indiana and his Hoosier-ness. I compare myself to Whitcomb Riley, only in the sense of place, because my understanding of poetry was shaped around his work growing up in Hancock County. I am personally influenced by other poets such as Sylvia Plath, Walt Whitman, and James Wright in style and in content. My poetry contains a mixture of confessionalism and pastoral poems and doesn’t shy away from critiquing every aspect of place, family, and mental illness. These intersecting ideals and styles (confessional and pastoral in fixed forms/free-verse) place me at a crossroads of my own, where navigating my position within these frameworks alters my view of the Midwest and how a mental illness may, in fact, be worse off because of the isolation, dissociation, and perception.
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Bredahl, Ulrika, Christine Ekeröös, and Ann-Charlotte Gustafsson. "ORO : Hur sjuksköterskan kan identifiera, kommunicera och reducera oro." Thesis, Halmstad University, School of Social and Health Sciences (HOS), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2887.
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Många patienter upplever en känsla av oro och frustration under vårdvistelsen. Obehandlad oro kan leda till ökade komplikationer. Oro och ångest är vanligt förekommande hos patienter, men går ofta sjuksköterskan obemärkt förbi. Det är av betydelse att sjuksköterskan kan identifiera och kommunicera om känslor med patienten, samt känna trygghet i sitt sätt att kommunicera. Syftet var att belysa hur sjuksköterskan genom kommunikation kan hjälpa patienten att reducera oro och ångest under vårdvistelsen. Studien genomfördes som en litteraturstudie baserad på 16 vetenskapliga artiklar. Resultatet visade att identifiering är en förutsättning för att kunna reducera oro hos patienten. Faktorer som ökar oro är rädsla, tid och bristande kommunikationsfärdigheter hos sjuksköterskan. Patientcentrerad vård, samt interpersonell förmåga är av stor betydelse för att minska oro. Effektiv reducering av oro sker när sjuksköterskan tillämpar interaktionsprocesser. Betydelsen ligger i att finna kommunikativa tekniker som sjuksköterskan kan använda i mötet med patienten. Ett sätt kan vara att använda det sokratiska samtalet för att kommunicera om känslor. Vidare forskning om det sokratiska samtalets betydelse i omvårdnaden, för att minska oro hos patienten är av intresse.
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Akander, Jan. "The ORC method." Doctoral thesis, KTH, Building Sciences and Engineering, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2931.
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The ORC Method (Optimised RC-networks) provides a means ofmodelling one- or multidimensional heat transfer in buildingcomponents, in this context within building simulationenvironments. The methodology is shown, primarily applied toheat transfer in multilayer building components. For multilayerbuilding components, the analytical thermal performance isknown, given layer thickness and material properties. The aimof the ORC Method is to optimise the values of the thermalresistances and heat capacities of an RC-model such as to givemodel performance a good agreement with the analyticalperformance, for a wide range of frequencies. The optimisationprocedure is made in the frequency domain, where the over-alldeviation between model and analytical frequency response, interms of admittance and dynamic transmittance, is minimised. Itis shown that ORC's are effective in terms of accuracy andcomputational time in comparison to finite difference modelswhen used in building simulations, in this case with IDA/ICE.An ORC configuration of five mass nodes has been found to modelbuilding components in Nordic countries well, within theapplication of thermal comfort and energy requirementsimulations.
Simple RC-networks, such as the surface heat capacity andthe simple R-C-configuration are not appropriate for detailedbuilding simulation. However, these can be used as basis fordefining the effective heat capacity of a building component.An approximate method is suggested on how to determine theeffective heat capacity without the use of complex numbers.This entity can be calculated on basis of layer thickness andmaterial properties with the help of two time constants. Theapproximate method can give inaccuracies corresponding to20%.
In-situ measurements have been carried out in anexperimental building with the purpose of establishing theeffective heat capacity of external building components thatare subjected to normal thermal conditions. The auxiliary wallmethod was practised and the building was subjected toexcitation with radiators. In a comparison, there werediscrepancies between analytical and measured effective heatcapacities. It was found that high-frequency discrepancies wereto a large extent caused by the heat flux sensors.Low-frequency discrepancies are explained by the fact that theexterior climate contained other frequencies than those assumedin the interior climate.
Key words: Building component, building simulation, heattransfer, thermal performance, frequency response, RC-network,finite difference model.
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Monstavičiūtė, Raminta. "Oro tarša Radviliškyje." Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130617_101759-64661.
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Darbe analizuojami teisės aktai, atlikti KD koncentracijos tyrimai Radviliškio mieste. Miesto oro tyrimų vietos buvo pasirinktos atsižvelgiant į transporto eismo intensyvumą judriausiose miesto gatvėse. Išanalizavus gautus duomenis buvo nustatyta, kad dažniausi kietųjų dalelių koncentracijos leistinos normos viršijimai buvo nustatyti intensyviausiuose gatvėse. Išnagrinėta aplinkos oro kokybė Lietuvoje ir Radviliškio mieste. Gegužės mėnesį viršijimų nustatyta labai daug, taigi kietųjų dalelių koncentracijai įtakos turi meteorologinės sąlygos. Siekiant pagerinti Radviliškio miesto oro taršos situaciją siūloma apriboti automobilių eismą didžiausios taršos zonose (pvz. įvesti vienos krypties eismą), o automobilius be veikiančių katalitinių filtrų pripažinti techniškai netvarkingais. Individualių gyvenamųjų namų apšildymui naudoti ekologiškai švaresnį kurą, skatinti gyventojus efektyviau apšiltinti savo būstą naudojant naujas technologijas, laistyti ir plauti gatves esant sausiems orams.The paper analyzes the legislation, to carry out studies of concentration KD Radviliškio city. Urban air monitoring site was selected on the basis of traffic intensity of the busiest streets of the city.After analyzing the data, it was found that the most common particle concentration levels below threshold levels were set on the streets of the most intense and on the streets. Examined the ambient air quality in Lithuania and Radviliškio city.In May, the exceedances found a great deal, so that particle concentration is affected by meteorological conditions. In order to improve Radviliškio urban air pollution situation is proposed to restrict car traffic areas of pollution (eg introduction of one-way traffic) and cars without catalytic active filters considered technically incorrectly. Individual residential heating use environmentally cleaner fuels, encouraging residents to better insulate your home by using new technology, irrigation and wash the streets in dry weather.