Relevant bibliographies by topics / Sky compass

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Sky compass'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Sky compass"

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Collett, Thomas S. "Insect Navigation: Visual Panoramas and the Sky Compass." Current Biology 18, no. 22 (November 2008): R1058—R1061. http://dx.doi.org/10.1016/j.cub.2008.10.006.

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Homberg, Uwe, Stanley Heinze, Keram Pfeiffer, Michiyo Kinoshita, and Basil el Jundi. "Central neural coding of sky polarization in insects." Philosophical Transactions of the Royal Society B: Biological Sciences 366, no. 1565 (March 12, 2011): 680–87. http://dx.doi.org/10.1098/rstb.2010.0199.

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Many animals rely on a sun compass for spatial orientation and long-range navigation. In addition to the Sun, insects also exploit the polarization pattern and chromatic gradient of the sky for estimating navigational directions. Analysis of polarization–vision pathways in locusts and crickets has shed first light on brain areas involved in sky compass orientation. Detection of sky polarization relies on specialized photoreceptor cells in a small dorsal rim area of the compound eye. Brain areas involved in polarization processing include parts of the lamina, medulla and lobula of the optic lobe and, in the central brain, the anterior optic tubercle, the lateral accessory lobe and the central complex. In the optic lobe, polarization sensitivity and contrast are enhanced through convergence and opponency. In the anterior optic tubercle, polarized-light signals are integrated with information on the chromatic contrast of the sky. Tubercle neurons combine responses to the UV/green contrast and e-vector orientation of the sky and compensate for diurnal changes of the celestial polarization pattern associated with changes in solar elevation. In the central complex, a topographic representation of e-vector tunings underlies the columnar organization and suggests that this brain area serves as an internal compass coding for spatial directions.
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Zittrell, Frederick, Keram Pfeiffer, and Uwe Homberg. "Matched-filter coding of sky polarization results in an internal sun compass in the brain of the desert locust." Proceedings of the National Academy of Sciences 117, no. 41 (September 28, 2020): 25810–17. http://dx.doi.org/10.1073/pnas.2005192117.

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Many animals use celestial cues for spatial orientation. These include the sun and, in insects, the polarization pattern of the sky, which depends on the position of the sun. The central complex in the insect brain plays a key role in spatial orientation. In desert locusts, the angle of polarized light in the zenith above the animal and the direction of a simulated sun are represented in a compass-like fashion in the central complex, but how both compasses fit together for a unified representation of external space remained unclear. To address this question, we analyzed the sensitivity of intracellularly recorded central-complex neurons to the angle of polarized light presented from up to 33 positions in the animal’s dorsal visual field and injected Neurobiotin tracer for cell identification. Neurons were polarization sensitive in large parts of the virtual sky that in some cells extended to the horizon in all directions. Neurons, moreover, were tuned to spatial patterns of polarization angles that matched the sky polarization pattern of particular sun positions. The horizontal components of these calculated solar positions were topographically encoded in the protocerebral bridge of the central complex covering 360° of space. This whole-sky polarization compass does not support the earlier reported polarization compass based on stimulation from a small spot above the animal but coincides well with the previously demonstrated direct sun compass based on unpolarized light stimulation. Therefore, direct sunlight and whole-sky polarization complement each other for robust head direction coding in the locust central complex.
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Mouritsen, Henrik, and Ole Næsbye Larsen. "Migrating songbirds tested in computer-controlled Emlen funnels use stellar cues for a time-independent compass." Journal of Experimental Biology 204, no. 22 (November 15, 2001): 3855–65. http://dx.doi.org/10.1242/jeb.204.22.3855.

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SUMMARY This paper investigates how young pied flycatchers, Ficedula hypoleuca, and blackcaps, Sylvia atricapilla, interpret and use celestial cues. In order to record these data, we developed a computer-controlled version of the Emlen funnel, which enabled us to make detailed temporal analyses. First, we showed that the birds use a star compass. Then, we tested the birds under a stationary planetarium sky, which simulated the star pattern of the local sky at 02:35 h for 11 consecutive hours of the night, and compared the birds’ directional choices as a function of time with the predictions from five alternative stellar orientation hypotheses. The results supported the hypothesis suggesting that birds use a time-independent star compass based on learned geometrical star configurations to pinpoint the rotational point of the starry sky (north). In contrast, neither hypotheses suggesting that birds use the stars for establishing their global position and then perform true star navigation nor those suggesting the use of a time-compensated star compass were supported.
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Jouir, Tasarinan, Reuben Strydom, Thomas M. Stace, and Mandyam V. Srinivasan. "Vision-only egomotion estimation in 6DOF using a sky compass." Robotica 36, no. 10 (July 25, 2018): 1571–89. http://dx.doi.org/10.1017/s0263574718000577.

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SUMMARYA novel pure-vision egomotion estimation algorithm is presented, with extensions to Unmanned Aerial Systems (UAS) navigation through visual odometry. Our proposed method computes egomotion in two stages using panoramic images segmented into sky and ground regions. Rotations (in 3DOF) are estimated by using a customised algorithm to measure the motion of the sky image, which is affected only by the rotation of the aircraft, and not by its translation. The rotation estimate is then used to derotate the optic flow field generated by the ground, from which the translation of the aircraft (in 3DOF) is estimated by another customised, iterative algorithm. Segmentation of the rotation and translation estimations allows for a partial relaxation of the planar ground assumption, inherently increasing the robustness of the approach. The translation vectors are scaled using stereo-based height to compute the current UAS position through path integration for closed-loop navigation. Outdoor field tests of our approach in a small quadrotor UAS suggest that the technique is comparable to the performance of existing state-of-the-art vision-based navigation algorithms, whilst also removing all dependence on additional sensors, such as an IMU or global positioning system (GPS).
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Homberg, Uwe. "In search of the sky compass in the insect brain." Naturwissenschaften 91, no. 5 (May 1, 2004): 199–208. http://dx.doi.org/10.1007/s00114-004-0525-9.

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Müller, Martin, and Rüdiger Wehner. "Wind and sky as compass cues in desert ant navigation." Naturwissenschaften 94, no. 7 (March 15, 2007): 589–94. http://dx.doi.org/10.1007/s00114-007-0232-4.

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Kirschfeld, K. "Navigation and Compass Orientation by Insects According to the Polarization Pattern of the Sky." Zeitschrift für Naturforschung C 43, no. 5-6 (June 1, 1988): 467–69. http://dx.doi.org/10.1515/znc-1988-5-624.

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A recent theory attempts to explain how bees take their compass orientation from the pattern of polarized light in the sky (S. Rossel and R . Wehner, Nature 323, 128-131 (1986)). According to this theory, orientation can be erroneous and lead to the wrong course of a recruited bee in search of the foraging site whenever only a small patch of the blue sky is visible to the bee. It is shown that orientation under natural conditions is not erroneous, if the compass reference is variable in time but equally defined for both, scout bees and recruits.
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Kirschfeld, K. "The Role of Dorsal Rim Ommatidia in the Bee's Eye." Zeitschrift für Naturforschung C 43, no. 7-8 (August 1, 1988): 621–23. http://dx.doi.org/10.1515/znc-1988-7-823.

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A recent model of celestial e-vector analysis by the bee assumes that polarization information is transformed into modulation of perceived brightness while the bee scans the sky by rotating its field of view. It is shown that the suggested simple strategy to read compass information from the polarization pattern of the sky in natural conditions can work only in a part of the sky close to the zenith. The bee would need a different strategy for other regions of the sky.
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WEHNER, RüDIGER. "The Hymenopteran Skylight Compass: Matched Filtering and Parallel Coding." Journal of Experimental Biology 146, no. 1 (September 1, 1989): 63–85. http://dx.doi.org/10.1242/jeb.146.1.63.

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In deriving compass information from the pattern of polarized light in the sky (celestial e-vector pattern), hymenopteran insects like bees and ants accomplish a truly formidable task. Theoretically, one could solve the task by going back to first principles and using spherical geometry to compute the exact position of the sun from single patches of polarized skylight. The insect, however, does not resort to such computationally demanding solutions. Instead, during its evolutionary history, it has incorporated the fundamental spatial properties of the celestial pattern of polarization in the very periphery of its nervous system, the photoreceptor layer. There, in a specialized part of the retina (POL area), the analyser (microvillar) directions of the photoreceptors are arranged in a way that mimics the e-vector pattern in the sky {matched filtering). When scanning the sky, i.e. sweeping its matched array of analysers across the celestial e-vector pattern, the insect experiences peak responses of summed receptor outputs whenever it is aligned with the symmetry plane of the sky, which includes the solar meridian, the perpendicular from the sun to the horizon. Hence, the insect uses polarized skylight merely as a means of determining the symmetry plane of the polarization pattern, and must resort to other visual subsystems to deal with the remaining aspects of the compass problem (parallel coding). The more general message to be derived from these results is that in small brains sensory coding consists of adapting the peripheral rather than the central networks of the brain to the functional properties of the particular task to be solved. The matched peripheral networks translate the sensory information needed for performing a particular mode of behaviour into a neuronal code that can easily be understood by well-established, unspecialized central circuits. This principle of sensory coding implies that the peripheral parts of the nervous system exhibit higher evolutionary plasticity than the more central ones. Furthermore, it is reminiscent of what one observes at the cellular level of information processing, where the membrane-bound receptor molecules are specialized for particular molecular signals, but the subsequent molecular events are not. Note: Dedicated to Professor Dr Martin Lindauer in honour of his 70th birthday.
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Dissertations / Theses on the topic "Sky compass"

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Lebhardt, Fleur. "The desert ant's celestial compass system." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17363.

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Die Wüstenameise, Cataglyphis, orientiert sich vor allem mittels Wegintegration. Über einen Heimvektor, den sie aus Distanz und Richtung einzelner Wegabschnitte berechnet, kann sie auf dem kürzesten Weg zu ihrem Ausgangspunkt zurückkehren. Zur Bestimmung der zurückgelegten Strecken verwendet sie einen Schrittintegrator. Die Laufrichtung wird hauptsächlich über Himmelsinformationen (Polarisationsmuster, Sonnenstand und Spektral- und Intensitätsgradienten) definiert. In dieser Arbeit über die Orientierungsfähigkeit von Cataglyphis fortis wird die Rolle des Polarisationskompasses bei der Bestimmung der Laufrichtung untersucht. In verschiedenen Versuchen wurden der Polarisationskompass der Ameise mit Hilfe eines Polarisationsfilters gezielt manipuliert und künstliche Konfliktsituationen erzeugt. Die Richtungsbestimmung wurde vom Polarisationskompass dominiert, wenn allein die Information des Polarisationskompass und idiothetische Richtungsinformation zur Verfügung standen. Erfuhren die Ameise widersprüchliche Informationen von Sonnen- und Polarisationskompass, berechneten sie eine mittlere Heimlaufrichtung, was eine gemeinsame neuronale Verarbeitung der beiden Signale voraussetzt. Diese These wurde durch Transferexperimente gestützt. In einer weiteren Versuchsreihe wurde die Wahrnehmung des Polarisationsmusters durch direkte Manipulation der entsprechenden Region (DRA) im Ameisenauge untersucht. Standen der Ameise in beiden Augen die frontale oder caudale DRA zur Verfügung führte dies zu einem deutlichen Orientierungsverlust. Die intakte DRA eines Auges erlaubte eine zielgerichtete Fortbewegung, die jedoch von der Erwartungsrichtung abwich. Zusammenfassend zeigen die Ergebnisse der vorliegenden Studie, dass der Polarisationskompass die präziseste Richtungsinformation liefert und den Himmelskompass der Wüstenameise dominiert.
The desert ant, Cataglyphis, navigates predominantly by means of path integration. The information about the distance and direction of individual path segments is integrated into a home vector, which allows the ant to return to the starting point on the shortest way. The distances covered are determined by a stride integrator. The heading direction is inferred mainly via celestial cues: the sky’s polarization pattern, the position of the sun, and the spectral and intensity gradient. This thesis focuses generally on the orientation abilities of Cataglyphis fortis and particularly on the role of the polarization compass to determine the heading direction. In the experiments, the ant’s polarization compass was selectively manipulated using a polarization filter and artificial cue conflict situations were created. The ants relied exclusively on the polarization compass to determine their heading direction if only idiothetic information and information from the polarization compass were available. When the ants experienced contradicting information detected via the sun and the polarization compass systems, an intermediate homing direction was calculated, suggesting a combined neural processing of both signals. This statement was supported by transfer experiments. In a further series of experiments, the input part of the polarization compass was manipulated. Particular regions of the ant’s eye (DRA) that detect polarized light were occluded. Ants with only the frontal or caudal parts of the DRA became disoriented, whereas ants with the entire DRA of one eye were able to perform more precise paths, although deviated from the expected direction. Overall, the results from this thesis suggest that the polarization compass provides the most accurate directional information and dominates the celestial compass system of the desert ant.
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Schmitt, Franziska [Verfasser], Wolfgang [Gutachter] Rössler, Christian [Gutachter] Wegener, and Rüdiger [Gutachter] Wehner. "Neuronal basis of temporal polyethism and sky-compass based navigation in \(Cataglyphis\) desert ants / Franziska Schmitt ; Gutachter: Wolfgang Rössler, Christian Wegener, Rüdiger Wehner." Würzburg : Universität Würzburg, 2016. http://d-nb.info/1149510277/34.

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Schmitt, Franziska [Verfasser], Wolfgang Gutachter] Rössler, Christian [Gutachter] Wegener, and Rüdiger [Gutachter] [Wehner. "Neuronal basis of temporal polyethism and sky-compass based navigation in \(Cataglyphis\) desert ants / Franziska Schmitt ; Gutachter: Wolfgang Rössler, Christian Wegener, Rüdiger Wehner." Würzburg : Universität Würzburg, 2016. http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-142049.

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Bockhorst, Tobias [Verfasser], and Uwe [Akademischer Betreuer] Homberg. "Novelty detection and context dependent processing of sky-compass cues in the brain of the desert locust Schistocerca gregaria / Tobias Bockhorst. Betreuer: Uwe Homberg." Marburg : Philipps-Universität Marburg, 2015. http://d-nb.info/107463957X/34.

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Pegel, Uta [Verfasser], and Uwe [Akademischer Betreuer] Homberg. "Processing of sky compass cues and wide-field motion in the central complex of the desert locust (Schistocerca gregaria) / Uta Pegel ; Betreuer: Uwe Homberg." Marburg : Philipps-Universität Marburg, 2019. http://d-nb.info/1185068732/34.

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Jundi, Basil el [Verfasser], and Uwe [Akademischer Betreuer] Homberg. "Processing of sky compass signals at different stages of the polarization-vision pathway in the brain of the desert locust (Schistocerca gregaria) / Basil el Jundi. Betreuer: Uwe Homberg." Marburg : Philipps-Universität Marburg, 2012. http://d-nb.info/1021498963/34.

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Oliveira, Tiago Manuel dos Santos. "Participação portuguesa no projecto KC-390 da Embraer : desafios no âmbito da gestão da tecnologia e da inovação." Master's thesis, Instituto Superior de Economia e Gestão, 2014. http://hdl.handle.net/10400.5/7858.

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Mestrado em Economia e Gestão de Ciência, Tecnologia e Inovação
O setor da indústria aeronáutica foi desde sempre reconhecido por elevada qualidade e complexidade. Os atributos do setor transparecem nos seus produtos, sendo poucas as criações humanas que são desenvolvidas com um nível de exigência tão elevado como as aeronaves. Um dos projetos mais recentes da Embraer é o KC-390, uma aeronave de transporte militar tático. O projeto de desenvolvimento conta com a participação de diversos países e, desde logo, Portugal, através das OGMA e dos consórcios Better Sky e Compass. Do ponto de vista da Gestão de Tecnologia e Inovação, o projeto KC-390 instiga diversos desafios centrados nas empresas, estes diretamente ligados com as suas competências e propostas, tornando-se também premente a sua identificação numa perspetiva de aprendizagem sobre a evolução da indústria aeronáutica portuguesa. Neste âmbito foi desenhado um estudo de caso tendo como objetivo caracterizar o envolvimento de Portugal no projeto e os desafios que se colocam às empresas. A dissertação permitiu concluir que Portugal não está a tirar pleno partido da oportunidade que representa o projeto, o qual fica marcado por um conflito entre as perspetivas industrial, defesa e económica. Tal afetou o sucesso dos dois consórcios envolvidos. Por um lado o consórcio Better Sky, centrado nas aeroestruturas, foi selecionado e enfrentou desafios de capacitação. Por outro lado o consórcio Compass, centrado no software e sistemas, aguarda ainda resposta da Embraer e onde os desafios são de desenvolvimento tecnológico. No final é de admitir, contudo, que o projeto contribuiu para melhorar a credibilidade tecnológica do país.
Aerospace industry has long been renowned for its high quality and complexity. The attributes of it reflect into its products, as few human creations have been developed with such high requirements as aircrafts do. This study analysis one of Embraer's latest projects, the KC-390 - a tactical military transport aircraft. The aircraft development counts with the participation of several countries. Portugal has been involved through the participation of OGMA and the consortiums Better Sky and Compass. From the standpoint of Technological and Innovation Management, the KC-390 project instigates many challenges to the enterprises involved. The analysis of the two Portuguese consortiums allows to understand how those challenges have been dealt, while at the same time it allows to learn more about the evolution of Portuguese aerospace industry. In this context, a case study was designed aiming to characterize the involvement of Portugal in this project. The study shows that Portugal is not taking full advantage of the opportunity presented, which is marked by conflicts between industrial, defense and economic prospects. This affected the consortiums success. On the one hand the Better Sky consortium, centered in aerostructures, had to cope with skill building challenges. On the other hand the Compass consortium, focused on software and systems, faced technological development challenges. In the end one can admit, however, that the project has contributed to improve Portugal's technological credibility.
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Bílek, Jan. "Aerospace - Futuristický kokpit moderního letounu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237164.

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This work describes the visualization design of the flight related quantities in a cockpit of a modern light sport aircraft. It focuses on the utilization of the state of the art trends in flight data displays and introduces the innovative implementation of the aircraft's energy state smart clues that reduce pilots' workload. The initial part of the work presents a research into the flight, engine and navigation data presentation on analog instruments, followed by their illustrative depiction in glass cockpits. Within the framework of this thesis, Microsoft Flight Simulator has been used as a source of the flight related data. Final advances in the display design were introduced through the implementation of the synthetic vision system and a visualization of the virtual tunnel in the sky.
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Zucker, Catherine, Lisa May Walker, Kelsey Johnson, Sarah Gallagher, Katherine Alatalo, and Panayiotis Tzanavaris. "HIERARCHICAL FORMATION IN ACTION: CHARACTERIZING ACCELERATED GALAXY EVOLUTION IN COMPACT GROUPS USING WHOLE-SKY WISE DATA." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/621221.

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Compact groups provide an environment to study the growth of galaxies amid multiple prolonged interactions. With their dense galaxy concentrations and relatively low velocity dispersions, compact groups mimic the conditions of hierarchical galaxy assembly. Compact group galaxies are known to show a bimodality in Spitzer IRAC infrared color space: galaxies are preferentially either quiescent with low specific star formation rates (SSFRs) or prolifically forming stars-galaxies with moderate levels of specific star formation are rare. Previous Spitzer IRAC studies identifying this "canyon" have been limited by small number statistics. We utilize whole-sky Wide-field Infrared Survey Explorer (WISE) data to study 163 compact groups, thereby tripling our previous sample and including more galaxies with intermediate mid-IR colors indicative of moderate SSFRs. We define a distinct WISE. mid-IR color space (log [f(12)/f(4.6)]) versus (log [f(22)/f(3.4)]) that we use to identify canyon galaxies from the larger sample. We confirm that compact group galaxies show a bimodal distribution in the mid-infrared and identify 37 canyon galaxies with reliable photometry and intermediate mid-IR colors. Morphologically, we find that the canyon harbors a large population of both Sa-Sbc and E/S0 type galaxies, and that they fall on the optical red sequence rather than the green valley. Finally, we provide a catalog of WISE. photometry for 567 of 652 galaxies selected from the sample of 163 compact groups.
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Sevrain, Charlotte. "Synthèse d'inhibiteurs du canal potassique SK3 - composés à visée antimétastatique et vectorisation d'ARN interférents." Phd thesis, Université de Bretagne occidentale - Brest, 2013. http://tel.archives-ouvertes.fr/tel-01065085.

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L'apparition de métastases est souvent le signe d'un mauvais pronostic vital pour les personnes atteintes d'un cancer. Ce processus de formation de métastase est un phénomène complexe dans lequel la migration cellulaire est un facteur clé.De récentes études ont montré que le canal SK3 (canal potassique de faible conductance dont l'activité dépend de la concentration cytosolique en calcium) était exprimé dans des cellules cancéreuses à fort pouvoir métastatique et leur conférait des capacités de migration accrues. Cette protéine constitue donc une nouvelle cible thérapeutique très intéressante pour agir sur la dissémination de cellules cancéreuses.Les objectifs de ces travaux de thèse ont permis de mettre en oeuvre deux stratégies visant à inhiber l'activité de ce canal potassique SK3.L'édelfosine, un glycérolipide à tête phosphocholine, a rapidement été reconnue comme étant un inhibiteur efficace de l'activité de ce canal. Cependant les effets secondaires induits par cette molécule ont conduit à rechercher des analogues moins toxiques et tout aussi efficaces. Des études structures-activité menées au sein du laboratoire ont permis de développer un nouveau glycérolipide à tête lactose, l'ohmline. Dans le but de compléter cette étude, nous avons réalisé la synthèse de glyco-glycérolipides et de glycophospho-glycérolipides et avons montré leur capacité à inhiber la protéine SK3 et à réduire la migration cellulaire SK3 dépendante.Une seconde stratégie vise à l'utilisation possible d'ARN interférents pour bloquer l'expression de la protéine SK3. Dans ce but, nous nous sommes intéressés à la synthèse et à l'incorporation, dans des formulations de lipides cationiques utilisés pour la transfection, de lipides neutres portant des motifs anisamides, ligands spécifiques des récepteurs sigma surexprimés dans des lignées cellulaires de tumeurs exprimant SK3. La synthèse de lipophosphoramides comportant un motif anisamide est présentée suivie de leur utilisation dans des expériences de transfection modèles (vectorisation d'ADN plasmidique) afin d'évaluer l'efficacité du ciblage engendré par le motif anisamide.
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Books on the topic "Sky compass"

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Mansfield, Harold. Vision: A saga of the sky. 2nd ed. New York, NY (71 Broadway, Suite 1305, New York 10006): Madison Pub. Associates, 1986.

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Sky coyote: A novel of the company. New York: Harcourt Brace, 1999.

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Petri, Thomas. Lightning from the sky, thunder from the sea. Bloomington, Ind: AuthorHouse, 2009.

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Petri, Thomas. Lightning from the sky, thunder from the sea. Bloomington, Ind: AuthorHouse, 2009.

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Lightning from the sky, thunder from the sea. Bloomington, Ind: AuthorHouse, 2009.

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Enforcement, United States Office of Surface Mining Reclamation and. Draft environmental impact statement: Peabody Coal Company's Big Sky Area B mine, Rosebud County, Montana. Helena, Mont.]: The Dept., 1988.

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Baker, T. Lindsay. Blades in the sky: Windmilling through the eyes of B.H. "Tex" Burdick. Lubbock, Tex: Texas Tech University Press, 1992.

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Yates, Ronald E. The Kikkoman chronicles: A global company with a Japanese soul. New York: McGraw-Hill, 1998.

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The Kikkoman chronicles: A global company with a Japanese soul. New York: McGraw-Hill, 1998.

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Grayson, John Paul. Corporate strategy & plant closures: The SKF experience. Toronto: Our Times, 1985.

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Book chapters on the topic "Sky compass"

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Jauncey, David L., Graeme L. White, Bruce R. Harvey, Michael J. Batty, Alan E. Wright, Ann Savage, B. A. Peterson, et al. "Mapping the Radio Sky: Compact Radio Quasars From the Parkes 2.7 GHz Survey." In Mapping the Sky, 487–90. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3063-6_77.

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Falkner, David E. "Astrophotography Using a Compact Digital Camera." In The Mythology of the Night Sky, 1–8. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0137-7_1.

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Catanzaro, Mary F. "More than a Common Pest: The Fly as Non-human Companion in Emily Dickinson’s “I Heard a Fly Buzz When I Died” and Samuel Beckett’s Company." In From Sky and Earth to Metaphysics, 157–62. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9063-5_14.

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Asami, Yasushi. "Introduction: City Planning and New Technology." In New Frontiers in Regional Science: Asian Perspectives, 261–65. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8848-8_17.

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AbstractIn Part III, titled “City Planning and New Technology,” we discuss two topics, namely, compact cities and real estate technology in Japan.Promotion of compact cities is regarded as a high priority issue in urban policies in the era of population decrease. The Act on Special Measures concerning Urban Reconstruction in 2014 was revised to institutionalize the framework for the Location Normalization Plan, a plan for local governments to build compact cities to manage population decline and aging urban infrastructure while placing less burden on environment. Three chapters are devoted to issues related to this movement. In Chap.10.1007/978-981-15-8848-8_18, Ishikawa (2020) discusses how urban functions can be guided by residents’ perspectives. To build a compact city, various day-to-day services must be placed proximal to residential areas; however, some services must be placed at a certain distance from residences because of land use restrictions. Therefore, we must determine the uses allowed in residential areas. In Chap.10.1007/978-981-15-8848-8_19, Morimoto (2020) discusses the history of major contributions made by the development of transportation facilities to urban spread, the important role of traffic facilities to guide land use toward desirable purposes, and impact of self-driving vehicles on land use. In Chap.10.1007/978-981-15-8848-8_20, Ogushi (2020) explains how the Location Normalization Plan in Niigata City was formed in detail.Real estate technology refers to real estate business-related services that use new technology. Several new services based on new technology have been introduced in the field of real estate in Japan. Three chapters are devoted to issues related to real estate technology. In Chap.10.1007/978-981-15-8848-8_21, Narimoto (2020) explains the outline of real estate technology services in Japan and identifies legal problems associated with handling of information. In Chap.10.1007/978-981-15-8848-8_22, Nishio and Ito (2020) report on creating a sky view factor calculating system that uses Google Street View. Sky view factor is a term that refers to a configuration factor for the amount of sky in a hypothetical hemisphere. In Chap.10.1007/978-981-15-8848-8_23, Kiyota (2020) explains the transition of neural network research and characteristics of deep learning and introduces a system that detects category inconsistencies in real estate property photographs submitted by real estate companies by using deep learning and a system that detects indexes associated with ease of living based on property photographs.
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Fifield, Peter. "“why after all not say without further ado what can later be unsaid” (Company)." In Late Modernist Style in Samuel Beckett and Emmanuel Levinas, 71–101. New York: Palgrave Macmillan US, 2013. http://dx.doi.org/10.1057/9781137319241_4.

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"Himmel / Sky." In Cut & Compose, 92–107. Birkhäuser, 2012. http://dx.doi.org/10.1515/9783034610926.92.

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Bhimull, Chandra D. "Lines." In Empire in the Air. NYU Press, 2017. http://dx.doi.org/10.18574/nyu/9781479843473.003.0013.

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In 1949, the famous British graphic design artist, Abram Games, created a poster for the state-owned airline that succeeded Imperial Airways at the start of the decade: BOAC. The poster showcases the new Stratocruiser service between London and New York. The design on the poster is of the horizon on the ocean, as seen from the sky. The central image is a four-page foldout map that is opening up and spreading out, or folding up and closing in. Three places are shown on the map. The United Kingdom is cut out of the center of the right-hand page, and the United States out of the left-hand one. The word “Atlantic Ocean” is spread across the middle pages, as are grid lines, a compass, and the Equator. There are no continents or islands. The right and left pages are red, blue, and white, which are the national colors of both countries. The middle pages are white and black, except for the Equator, which is notably a thin red and blue line....
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Kennel, Charles F. "Introduction." In Convection and Substorms. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195085297.003.0004.

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In the year 1600, the the man about to become physician to Queen Elizabeth I of England published a long treatise summarizing his two decades of experimentation on magnetism. After disposing of such issues as whether garlic causes magnets to “lose their virtue” William Gilbert recounted his observations upon moving a compass over the surface of a permanent magnet that had been specially fashioned in the form of a sphere (Gilbert, 1893, 1958). The similarity between the compass readings on the surface of his magnet and those recorded in mariners’ charts led Gilbert to conclude that his magnet was a terrella, a little earth, and that our big earth is (among other things) a giant magnet. Gilbert’s little earth organized the pattern of compass readings not only on its surface but also in the space surrounding it. From this, he boldly asserted that the big earth’s magnetic influence continues far into empty space, where no mariner of his day could ever go. The profundity of this remark was not lost on Gilbert’s younger contemporary, Johannes Kepler, who found in it an explanation of the earth’s annual motion around the sun. Kepler reasoned more or less as follows (in modern language): Since the earth and the sun are both celestial bodies, they both should rotate, and they both should have magnetic fields surrounding them in space. Their two rotating fields interact somehow, somewhere, in the space between them, communicating the sun’s rotational motion to the earth and pushing the earth around its orbit. In this curious way, Kepler might have been the first to perceive that the sun acts upon terrestrial magnetism. He was not the last. In 1580, Kepler’s teacher, Michael Maestlin, had recorded an observation of a distinct region of oscillating luminosity in the northern sky, an aurora. The aurora had been a topic of scientific interest since Graeco-Roman antiquity [of particular importance was Aristotle’s (384-322 B.C.) discussion of it in his Meteorology], but it had become an object of superstition in the European Middle Ages, and scientific interest in it only began to re-emerge in the second half of the 16th century (Link, 1957).
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Toffolatti, Luigi, Carlo Burigana, Francisco Argeso, and Jos M. "Extragalactic Compact Sources in the Planck Sky and Their Cosmological Implications." In Open Questions in Cosmology. InTech, 2012. http://dx.doi.org/10.5772/52908.

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Eimeleus, K. B. E. E. "A Chronicle of Ski Competitions." In Skis in the Art of War, translated by William D. Frank and E. John B. Allen, 84–87. Cornell University Press, 2019. http://dx.doi.org/10.7591/cornell/9781501747403.003.0023.

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This chapter considers ski results achieved over a variety of terrain and under various conditions. It is the rare person who develops into a good skier without engaging in the sport since childhood, because only through extensive practice can one gain sufficient limb and muscle strength for the essentials of skiing. Furthermore it is difficult to compare results across different locations, because variations in trails, weather, place, time of year, time of day, and many other less important considerations can lead to discrepancies of several minutes. Therefore, when a question arises about minutes and seconds, paying attention to all of the circumstances is necessary in order to make a reasoned evaluation. In this context, the chapter takes a look at every type of ski practice: ski sailing, Indian skis, ski-running behind a horse, mountain descents, and ski runs over distance both for speed and endurance.
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Conference papers on the topic "Sky compass"

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Bradt, Hale, Alan M. Levine, Edward H. Morgan, and Ronald Remillard. "Status of the All‐Sky Monitor on RXTE." In THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. American Institute of Physics, 2007. http://dx.doi.org/10.1063/1.2774898.

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Sundborg, Bengt. "Making the Most of Daylight in Town Planning." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.6687.

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Making the most of daylight in town planning is one of the important ingredients in the attempts for the sustainable city. Exactly 150 years ago Ildefons Cerdà presented his great work “Teoría General de la Urbanización” including methods for taking care of sunlight. However, with modern software, the possibilities to do comprehensive preparations are much better. This paper presents an urban typology considering daylight with basic geometric forms, shapes and patterns. Later this will be elaborated more in detail. The research includes three steps; choosing typical alternatives for settlements and designing some new principle urban solutions, calculations and evaluations of the alternatives considering especially energy saving. The quality and the quantity of daylight are dependent of the geometry of the urban spaces. That means the volumes for the buildings as well as the empty spaces in between. The accessibility for diffuse daylight from the sky and for direct rays from the sun is measurable by computer calculations where the sun angles and the skylight from the hemisphere are simulated. Relevant parameters are height, width and length. In a settlement with a high urban density it is more difficult to distribute daylight than in a settlement with low density. However the economy for exploitations is also worse with lower density. Therefore the comparisons between different settlements are with the same density. The orientation of the settlements according to the compass is of crucial importance looking to the direct sunlight and the shadows. How the local environment with parks, water, mountains and specific landmarks in the surroundings also affects the daylight distribution is included.References (100 words) Dubois, M.-C., Gentile, N., Amorim, C., Osterhaus, W., Stoffer, S.,Jakobiak, R., Geisler-Moroder, D., Matusiak, B., Onarheim, F. M., Tetri, E. (2016) Performance Evaluation of Lighting and Daylighting Retrofits: Results from IEA SHC Task 50. (Energy Procedia. vol. 91). Littefair, P. J. (2011) Site layout planning for daylight and sunlight: a guide to good practice (BRE, Building Research Establishment, IHS BRE Press, Watford). Rode, P., Keim, C., Robazza, G., Viejo, P. and Schofield, J. (2014) Cities and energy: urban morphology and heat energy demand (LSE, London School of Economics, Cities and EIFER, European Institute for Energy Research, Karlsruhe Institute of Technology, London).
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Alexander, Paul. "The evolution of compact radio sources." In Resolving The Sky - Radio Interferometry: Past, Present and Future. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.163.0016.

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de Bruyn, Ger A. G. "Recent WSRT Results on Two Prototypical Compact AGN." In Resolving The Sky - Radio Interferometry: Past, Present and Future. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.163.0014.

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Fiocchi, Maria Teresa. "The 17 min orbital period in the Ultra Compact X-ray Binary 4U 0513-40." In The Extreme and Variable High Energy Sky. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.147.0070.

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De Cesare, Giovanni. "Searching for 511 keV annihilation line from galactic compact objects with IBIS." In The Extreme sky: Sampling the Universe above 10 keV. Trieste, Italy: Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.096.0074.

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Takanashi, Masahiro, Yu Itabashi, and Takashi Hirano. "Study on Validity of Stress Intensity Factor in CT Specimen for Materials With Low Yield Stress." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97953.

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This paper discusses the validity of a stress intensity factor K for compact tension (CT) specimens of stainless and low-alloy steels by computing J-integral values. In fracture mechanics testing, specimen configurations and loading conditions are strictly regulated to meet the small-scale yielding (SSY) condition and obtain valid data. For some materials, particularly those without an obvious yield point, it is hard to meet the SSY condition. The regulations specified in fracture mechanics test standards are based on experimental results. The theoretical reason for the SSY condition is not necessarily clear and the condition seems conservative. This study focuses on a correlation with the stress intensity factors K and the J-integral values under the SSY condition. J-integral values of CT specimens were analyzed by elasto-plastic finite element analysis. Subsequently, the validity of the stress intensity factor K was checked by comparing K and J–integral values to determine whether CT specimens were under the SSY condition or not. To simplify the comparison, J-integral values were converted to K values, equivalent stress intensity factor KJ values. When K values were low enough to meet the SYY condition of the specimen, they equaled KJ values. Meanwhile, KJ values exceed K values in a high K region, which means the specimen is no longer under a SSY condition. It is possible to determine whether the specimen is under the SSY condition or not by comparing the values of KJ and K. This paper evaluated the validity of K values using the correlative relationship and showed that they were valid to some extent even if loading conditions and specimen configurations were outside the scope of the specification by the test standards. The validity of K values with 0.2% offset strength or flow strength instead of yield stress is also confirmed by this method.
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Al-Zubaydi, Ahmed Y. Taha, John Dartnall, and Annette Dowd. "Design, Construction and Calibration of an Instrument for Measuring the Production of Chilled Water by the Combined Effects of Evaporation and Night Sky Radiation." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-85645.

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This paper presents the design and mathematical modeling of thermal radiator panels to be used primarily to measure night sky radiation from dry and wet coated surfaces. Three panels may be used in conjunction as a combined measuring system. One panel consists of an upper dry surface coated aluminum sheet laminated to an ethylene vinyl acetate foam backing block having a pattern of parallel flow water channels and header channels milled into its mating surface prior to lamination to the aluminum sheet. This configuration provides a fin and channel radiator instrument whereby circulating water may be used to measure the heat loss from this panel to night sky radiation. In a second configuration, the surface of a panel without buried water channels but otherwise identical may be wetted in order to study and compare the night sky radiation from its wet surface. In this case, the measuring water is circulated over the upper face of this panel. In a third configuration, water is sprayed onto the surface of the second panel (or a similar panel) so that an evaporative cooling effect is gained in addition to the radiation effect. Initial TRNSYS simulations for the performance of all three configurations are presented and it is planned to use the panels as calibrated instruments for discriminating between the cooling effects of night sky radiation and evaporation.
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Nakazawa, Kazuhiro, Tadayuki Takahashi, Shin Watanabe, Yuto Ichinohe, Shin'ichiro Takeda, Teruaki Enoto, Yasushi Fukazawa, et al. "Sub-MeV all sky survey with a compact Si/CdTe Compton telescope." In SPIE Astronomical Telescopes + Instrumentation, edited by Tadayuki Takahashi, Jan-Willem A. den Herder, and Mark Bautz. SPIE, 2014. http://dx.doi.org/10.1117/12.2055422.

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Arriola, A., B. Norris, N. Cvetojevic, S. Gross, J. Lawrence, M. Withford, and P. Tuthill. "First on-sky demonstration of a compact fully-integrated Photonic Waveguide Nulling Interferometer." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/cleo_at.2016.jf2n.4.

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Reports on the topic "Sky compass"

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Health hazard evaluation report: HETA-2007-0073-3089, report on an investigation of asthma and respiratory symptoms among workers at a soy processing plant, The Solae Company, Memphis, Tennessee. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, August 2009. http://dx.doi.org/10.26616/nioshheta200700733089.

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