Academic literature on the topic 'Occultation de la violence'

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Journal articles on the topic "Occultation de la violence"

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Luis, Ballester Brage, Rosario Pozo Gordaliza, and Carmen Orte Socías. "Delocalized Prostitution: Occultation of the New Modalities of Violence." Procedia - Social and Behavioral Sciences 161 (December 2014): 90–95. http://dx.doi.org/10.1016/j.sbspro.2014.12.015.

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Lacombe, Delphine. "Visibilité et occultation des violences masculines envers les femmes au Nicaragua (1979-1996)." Problèmes d'Amérique latine 84, no. 2 (2012): 13. http://dx.doi.org/10.3917/pal.084.0013.

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Stahl, Don. "The Occultation." Chicago Review 40, no. 4 (1994): 19. http://dx.doi.org/10.2307/25305877.

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Dyson, Freeman J. "Occultation Astronomy." International Astronomical Union Colloquium 123 (1990): 413–15. http://dx.doi.org/10.1017/s0252921100077368.

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The era of occultation astronomy, studying dark objects by observing occultations of bright ones, has begun. The paper of Duncan, Quinn and Tremarne, “The Origin of Short-Period Comets”, Astrophys. J. Letters, 328, 69-73 (1988), greatly improved the prospects for occultation astronomy by demonstrating the existence of a second comet reservoir, the Kuiper Belt, much closer to us than the Oort Cloud and concentrated toward the ecliptic plane. Charles Alcock at Livermore (private communication) has begun work on a practical system of small telescopes to observe occultations of stars by comets. I here propose a system similar in concept of Alcock’s but using different hardware. We need to try various systems on a small scale to find out which are most cost-effective. My proposal is based on the Multiple Telescope Robotic Observatory (MTRO) developed by Boyd and Genet at Fairborn Observatory in Arizona. See Russell M. Genet, “Multiple-Telescope Robotic Observatories in Space”, submitted to P.A.S.P. (1990).
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Kammarti, Adrian. "La double occultation." Critique 901, no. 6 (May 24, 2022): 577–87. http://dx.doi.org/10.3917/criti.901.0577.

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Stagliano, J. J. "Dynamical occultation correction." Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere 25, no. 10-12 (January 2000): 833–35. http://dx.doi.org/10.1016/s1464-1909(00)00111-8.

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Schaefer, Bradley E., Henk J. J. Bulder, and Jean Bourgeois. "Lunar occultation visibility." Icarus 100, no. 1 (November 1992): 60–72. http://dx.doi.org/10.1016/0019-1035(92)90018-3.

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Agol, Eric. "Occultation and Microlensing." Astrophysical Journal 579, no. 1 (November 2002): 430–36. http://dx.doi.org/10.1086/342880.

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Liu, Congliang, Gottfried Kirchengast, Yueqiang Sun, Veronika Proschek, Xin Wang, Longfei Tian, Qifei Du, et al. "Impacts of Orbital and Constellation Parameters on the Number and Spatiotemporal Coverage of LEO-LEO Occultation Events." Remote Sensing 13, no. 23 (November 29, 2021): 4849. http://dx.doi.org/10.3390/rs13234849.

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The development of small-satellite technologies allows the low Earth orbit intersatellite link (LEO-LEO) occultation method to observe the Earth’s atmosphere with global coverage and acceptable costs using electromagnetic signals, in which the L/X/K/M band and short-wave infrared band signals have been well demonstrated to be suitable. We hence need to investigate the impacts of orbital and constellation parameters on the number and spatiotemporal distribution of LEO-LEO occultation events for best-possible LEO-LEO occultation mission design and optimization at the targeted mission size. In this study, firstly, an occultation events location simulation model accounting for the right ascension of the ascending node (RAAN) precession was set up and the concept of a time-dependent global coverage fraction of occultation events was defined. Secondly, numerical experiments were designed to investigate the orbital parameters’ impacts and to assess the performance of LEO-LEO occultation constellations, in which the Earth is divided into 5° × 5° latitude and longitude cells. Finally, the number, timeliness, and global coverage fraction of occultation events for two-orbit and multi-orbit LEO-LEO constellations were calculated and analyzed. The results show that: ① the orbit inclination and RAAN are the main impacting parameters followed by orbital height, while the RAAN precession is a relevant modulation factor; ② co-planar counter-rotating receiving and transmitting satellite orbits are confirmed to be ideal for a two-satellite LEO-LEO constellation; ③ polar and near-polar orbit constellations most readily achieve global coverage of occultation events; near-equator orbit constellations with supplementary receiving and transmitting satellite orbit planes also readily form the occultation event geometry, though the occultation events are mainly distributed over low and low-to-middle latitude zones; and ④ a well-designed larger LEO-LEO occultation constellation, composed of 36–72 satellites, can meet the basic requirements of global numerical weather prediction for occultation numbers and timeliness, yielding 23,000–38,000 occultation events per day and achieving 100% global coverage in 12–18 h.
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Zhu, Qinglin, Mingchen Sun, Xiang Dong, and Pengfei Zhu. "Design and Simulation of Stellar Occultation Infrared Band Constellation." Remote Sensing 14, no. 14 (July 10, 2022): 3327. http://dx.doi.org/10.3390/rs14143327.

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This study provides an in-depth analysis of the characteristics of stellar occultation events. Using 10 target star sources, the influence of orbital elements on the number, duration, and distribution of stellar occultation events was simulated and analyzed, and the constellation configuration was designed. The results showed the following points: (1) the orbital inclination had the greatest influence on the number of occultation events, with obvious upward and downward trends in the range of 10–40° and 150–180°, and the amount of occultation data remained at about 303 times under the other angle conditions. The orbital height had an effect on the number of occultations, but the amplitude was small. (2) The use of four orbits had an impact on the occultation duration. The duration decreased with an increase in the orbit height and inclination, the distribution was symmetrical with the perigee angular distance, and it increased with an increase in the ascending intersection right ascension. (3) The higher the orbital height, the less comprehensive the longitudinal and latitudinal distribution of occultation events. With an orbital inclination of less than 150°, the greatest occultation event was covered to encompass the entire world. The other two orbital elements had negligible effects on the longitudinal and latitudinal distribution of occultation events. (4) The elevation of the occultation event increased with an increase in the orbital altitude, but the azimuth showed no obvious change trends. A considerable number of normal occultations can be obtained with an orbital inclination of less than 120°. The other two orbital elements had a negligible effect on the distribution of altitude and azimuth of occultation events. A stellar occultation constellation configuration was designed based on the simulation results, and the results showed that the following parameters of satellites can be used to realize the global distribution of occultation events: orbital height of 500 km, orbital inclination of 97.3771°, perigee angular distance of 40°, and ascending node right ascension steps of 40°. This configuration will ensure that an adequate number of normal occultations are obtained, which will ensure the quality of data inversion under the condition of 152 infrared target star sources.
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Dissertations / Theses on the topic "Occultation de la violence"

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Prigent, Pierre-Guillaume. "Les stratégies des pères violents en contexte de séparation parentale : contrôle coercitif, complicité institutionnelle et résistance des femmes." Thesis, Brest, 2021. http://www.theses.fr/2021BRES0102.

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Dans cette thèse, nous étudions les stratégies que les pères violents adoptent en contexte de séparation parentale. À partir d’entretiens réalisés avec une vingtaine de femmes qui se sont séparées d’un conjoint violent avec qui elles ont eu des enfants, nous identifions les tactiques employées par les agresseurs avant, pendant et après la séparation : isolement, privation de ressources, contrôle, intimidation, dévalorisation, confusion, sur-responsabilisation et violence. Ces tactiques se cumulent, se combinent et s’entremêlent dans la stratégie visant à maintenir pouvoir et contrôle sur la femme et les enfants victimes. Les réponses sociales et institutionnelles à la violence peuvent reproduire les tactiques repérées, et relever de complicité avec l’agresseur. L’espace pour l’action des victimes, réduit lors de la relation conjugale puis étendu grâce à la séparation, est de nouveau restreint par le principe de l’autorité parentale conjointe, qui implique un maintien du lien pouvant exposer à de nouvelles violences, et soumettre les victimes à un contrôle de leurs activités quotidiennes par l’agresseur. La résistance des femmes à la violence et au contrôle post-séparation et leurs tentatives de protéger les enfants sont alors considérées comme un obstacle à la coparentalité. Les droits parentaux des victimes peuvent être réduits, voire la résidence des enfants transférée chez l’agresseur. Cette analyse souligne les résistances institutionnelles à la prise en compte des violences conjugales post-séparation dans la parentalité
In this thesis, we study the strategies that abusive fathers adopt in the context of parental separation. Based on interviews with twenty women who have separated from an abusive partner with whom they had children, we identify the tactics employed by abusers before, during and after separation: isolation, deprivation of resources, control, intimidation, devaluation, confusion, overburden of responsibility and violence. These tactics accumulate, combine and intertwine in the strategy to maintain power and control over the victimised woman and children. Social and institutional responses to violence may replicate the tactics identified, and may involve complicity with the abuser.The space for action of the victims, reduced during the relationship and then extended by the separation, is again restricted by the principle of joint parental authority, which implies maintaining the link that can expose the victims to further violence and subject them to control of their daily activities by the aggressor.Women's resistance to post-separation violence and control and their attempts to protect the children are then seen as an obstacle to co-parenting. Victims' parental rights may be curtailed or the children's residence transferred to the abuser. This analysis highlights the institutional resistance to taking post-separation domestic violence into account in parenting
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Olkin, Catherine Blair. "Stellar occultation studies of Triton's atmosphere." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/55046.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
Includes bibliographical references (p. 127-136).
by Catherine Blair Olkin.
Ph.D.
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Salyk, Colette Vanessa. "Stellar occultation investigations of Pluto's atmosphere." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/114110.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2003.
Cataloged from PDF version of thesis. Page 21 missing from original thesis.
Includes bibliographical references (pages 27-28).
We investigate the shape of Pluto's atmosphere using data from the occultation of the V=15.7 star P131.1 by Pluto on 2002 Aug 21 (UT). We find that Pluto's atmosphere, as projected onto the sky, is noticeably non-circular. This implies an overall ellipsoidal shape, which could be an indication of high winds and/or latitudinal stratification. We decide to compare our results to those obtained from datasets of the occultation of P8 by Pluto on 1988 June 9 (UT). Previous analyses of these datasets by Millis et al. (1993) had led to the conclusion that Pluto's atmospheric shape did not deviate from that of a sphere. However, we find that the 1988 datasets do not conclusively demonstrate that this is the case. We conclude that Pluto's atmosphere is currently non-spherical and could have been non-spherical at the time of the 1988 occultation. Implications for high winds and/or latitudinal stratification present exciting possibilities to be investigated by the upcoming New Horizons mission to Pluto.
by Colette Salyk.
S.B.
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Cooray, Asantha Roshan. "Stellar occultation observations of Saturn's upper atmosphere." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/53030.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
Includes bibliographical references (leaves 74-79).
by Asantha Roshan Cooray.
M.S.
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Foust, Jeffrey Alan 1971. "Stellar occultation studies of Saturn's upper atmosphere." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9528.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1999.
Includes bibliographical references (p. 224-230).
The properties of Saturn's upper atmosphere are not well-known despite several spacecraft flybys. However, the region of 1-100 [mu]bar can be studied in detail by observing stellar occultations -- when the planet passes in front of a star -- from ground-based or Earth-orbiting telescopes. We use data from five such occultations: three observed in 1995 by the Faint Object Spectrograph (FOS) on the Hubble Space Telescope (HST), one observed in 1996 at the NASA Infrared Telescope Facility (IRTF) and one in 1989 observed by a different instrument at the IRTF. The data span latitudes from 52° south to 75 ° north. We fit isothermal models to each data set and also perform numerical inversions. These analyses show that temperatures in the 1-10 [mu]bar range can vary significantly as a function of season and latitude, ranging from 121 to 160 K, in accordance with radiative transfer models for the atmosphere. We also search for evidence of gravity wave saturation in Saturn's upper atmosphere, as seen in other planetary atmospheres, by analyzing the power spectra of temperature and density data and by studying the temperature lapse rate in the atmosphere. Our analysis is consistent with saturated gravity waves for all data sets, although gravity wave saturation is not the sole explanation for the spectra. We take advantage of the wavelength-resolved HST FOS data to study the composition of Saturn's upper atmosphere. We measured the difference in feature times for data taken at two wavelengths, and use the different refractivities of hydrogen and helium, as a function of wavelength to compute the relative amounts of the two elements in the planet's atmosphere. We find that the helium mass fraction is 0.26 ± 0.10, higher than that found using Voyager data, but marginally consistent with theoretical models for the evolution of Saturn's atmosphere, although the large error bars on the results make a definitive conclusion problematic.
by Jeffrey Alan Foust.
Ph.D.
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Bérard, Diane. "Etude des anneaux de Chariklo par occultation stellaire." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066128/document.

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Les occultations stellaires sont une méthode puissante pour étudier les petits corps du Système Solaire, trop faibles ou lointains pour être étudiés par d’autres techniques. Cette méthode consiste à observer le corps passant devant une étoile d’arrière plan. Le flux lumineux stellaire est alors intercepté quelques instants, ce qui permet de caractériser la forme de l’objet et d’étudier son environnement (anneau, atmosphère ou satellite). Deux anneaux denses et étroits ont été découverts en Juin 2013 pour la première fois autour du plus gros des Centaures Chariklo (corps central : 250 km de diamètre ; anneaux : 800 km). Cette thèse présente les 16 occultations par Chariklo et ses anneaux observées depuis 2013. Ces données représentent les seules observations aujourd’hui existantes de ce système planétaire. Une première étude de leur structure et de leur géométrie est détaillée dans ces travaux. Mes travaux ont également porté sur une occultation par la planète naine Haumea observée en Janvier 2017. Celle-ci nous a révélé la présence d’un anneau dense de rayon ~2281 km autour de ce corps tri-axial. Haumea est donc le deuxième corps en dehors des planètes géantes à posséder un anneau. Cette occultation permet notamment de déduire la forme, la taille (1161x852x513 km) et la densité d’Haumea. Cette seconde découverte tend à montrer que les anneaux autour des petits corps ne sont pas si rares. La publication du catalogue Gaia DR1 en 2016 a permis d’améliorer considérablement la précision de nos prédictions donc nos observations. Les prochaines années seront consacrées à scanner plus en détails les anneaux de Chariklo et d’Haumea, mais aussi à chercher des anneaux autour d’autres petits corps afin de comprendre les mécanismes de formation et d’évolution de ces systèmes
Stellar occultations are a very powerful tool to study small bodies of the Outer Solar System, which are usually too faint or too far away to be studied by others techniques. They occur when a body passes in front of a background star. The stellar flux will then be intercepted during several seconds/minutes. Observation of the occulted star in time allows us to study the shape and size of the occulting object and its vicinity (ring, atmosphere or satellite). For the first time, two dense and narrow rings have been discovered on June 2013 around the biggest known Centaur Chariklo (body’s diameter: 250 km and rings diameter: 800 km). My work shows the 16 observed occultations by Chariklo and/or its rings since 2013. Those data are the only one available about this planetary system today. A first study of their structure and their geometry is conducted. Another part of my work was to study an occultation by the dwarf planet Haumea recorded on January 2017. It revealed the presence of a ring of radius ~2281 km around this tri-axial body. This discovery made Haumea the second body with a ring orbiting around except the four giant planets. This occultation allows us to derive the shape, size (1161x852x513 km) and density of the main body. This second discovery tends to show that rings in small planetary systems are more common that we thought. The release of Gaia DR1 catalog in 2016 greatly improved our predictions of such occultations. In the forthcoming years, efforts will be made on detailed and localized studies of Chariklo’s and Haumea’s rings, but also on search for other small rings systems in order to better understand the origins and the evolution mechanisms of such systems
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Griggs, Erin R. "Analyses for a Modernized GNSS Radio Occultation Receiver." Thesis, University of Colorado at Boulder, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3704709.

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Global Navigation Satellite System (GNSS) radio occultation (RO) is a remote sensing technique that exploits existing navigation signals to make global, real-time observations of the Earth's atmosphere. A specialized RO receiver makes measurements of signals originating from a transmitter onboard a GNSS spacecraft near the Earth's horizon. The radio wave is altered during passage through the Earth's atmosphere. The changes in the received signals are translated to the refractivity characteristics of the intervening medium, which enable the calculation of atmospheric pressure, temperature, and humidity. Current satellite missions employing GNSS RO have provided invaluable and timely information for weather and climate applications. Existing constellations of occultation satellites, however, are aging and producing fewer quality measurements. Replacement fleets of RO satellites are imperative to sustain and improve the global coverage and operational impact achieved by the current generation of RO satellites. This dissertation describes studies that facilitate the development of next generation RO receivers and satellite constellations. Multiple research efforts were conducted that aim to improve the quantity and quality of measurements made by a future satellite-based RO collection system. These studies range in magnitude and impact, and begin with a receiver development study using ground-based occultation data. Future RO constellations and collection opportunities were simulated and autonomous occultation prediction and scheduling capabilities were implemented. Finally, a comprehensive study was conducted to characterize the stability of the GNSS atomic frequency standards. Oscillator stability for a subset of satellites in the GNSS was found to be of insufficient quality at timescales relevant to RO collections and would degrade the atmospheric profiling capabilities of an RO system utilizing these signals. Recommendations for a high-rate clock correction network are proposed, which provides significant improvement to the fractional errors in the derived refractivity, pressure, and temperature values caused by the oscillator instabilities.

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Hilbert, Bryan (Bryan Nathaniel) 1977. "Stellar occultation lightcurve modeling for elliptical occulting bodies." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/54444.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2001.
Includes bibliographical references (leaf 41).
We present a new method of calculating model lightcurves for stellar occultations by the Jovian planets. We model the occulting planet as a three-dimensional body of non-zero ellipticity, and define two ellipses of intersection with the body which dictate the appearance of the lightcurve. These include the visible-limb plane ellipse, which is the observed figure of the body as seen in the sky, and the line-of-sight ellipse, which contains the line of sight to the occulted star, and is the plane in which the starlight is refracted. The observed stellar flux during the occultation is primarily dictated by the ellipticity and subsequent radius of curvature of the instantaneous ellipse in the line-of-sight plane. This new method is applied to several test cases, as well as to the Jovian occultation of HIP9369 on 10 October 1999. Lightcurves generated by this model are compared to identical situations using the method published in Hubbard et al. (1997), showing that the Hubbard model works well for low-latitude occultations, but fails at higher latitudes. In the case of the high-latitude Jovian occultation, the best-fit lightcurve, produced from this new method, yielded a half-light equatorial radius of 71,343±1.2 km with a scale height of 19.25±0.5km, and an isothermal temperature of 139K. The same data, fit using a lightcurve generated by the method described in Hubbard et al. (1997), resulted in a half-light equatorial radius of 71,819km with a scale height of 17.9km with errors comparable to the previous fit, resulting in an isothermal temperature of 129K. Lightcurves are numerically generated for an ellipsoidal planet and, for comparison, an approximation to the ellipsoidal case consisting of a sphere with radius equal to the radius of curvature of the ellipsoid at the half-light point. We find that in the case of an occultation where the line-of-sight ellipticity does not vary, that the radius of curvature approximation matches the ellipsoidal planet lightcurve to within 0.007%. For an oblique occultation however, the line-of-sight ellipticity varies, and the approximation, using only a single radius of curvature sphere, is only good to about 1%. As a result, we find that using a model such as that presented in Baum and Code (1953) to fit the lightcurve of an ellipsoidal planet can return values for half-light radius (after accounting for the distance between the center of curvature and the center of the body) which may match the local distance to the center of the ellipsoid to a fraction of a percent, while returning values of scale height which may be in error by several percent. Test cases are also then put through numerical inversions, to obtain temperature versus pressure profiles. Test cases with spherical planets return temperature profiles that match those used to create the lightcurves, while test cases with ellipsoidal planets return temperature profiles which can differ from the input temperatures by tens of degrees, assuming a constant local gravity over the course of the occultation.
by Bryan Hilbert.
S.M.
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Lange, Martin, and Christoph Jacobi. "Analysis of gravity waves from radio occultation measurements." Universitätsbibliothek Leipzig, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-217072.

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In the height range 10–30 km atmospheric gravity waves lead to periodic perturbations of the background temperature field in the order of 2-3 K, that are resolved in temperature profiles derived from radio occultation measurements. Due to the spherical symmetry assumption in the retrieval algorithm and the low horizontal resolution of the measurement damping in the amplitude and phase shift of the waves occurs leading to remarkable errors in the retrieved temperatures. The influence of the geometric wave parameters and the measurement geometry on plane gravity waves in the range 100-1000 km horizontal and 1-10 km vertical wavelength is investigated with a 2D model ranging ±1000 km around the tangent point and 10-50 km in height. The investigation shows, that with radio occultation measurements more than 90 % of the simulated waves can be resolved and more than 50% with amplitudes above 90%. But the geometrical parameters cannot be identified, since one signal can be attributed to different combinations of wave parameters and view angle. Even short waves with horizontal wavelengths below 200 km can be derived correctly in amplitude and phase if the vertical tilt is small or the view angle of the receiver satellite is in direction of the wave crests
Atmosphärische Schwerewellen führen im Höhenbereich 10-30 km zu periodischen Störungendes Hintergrundtemperaturfeldes in der Größenordnung von 2-3 K, die in Temperaturprofilen aus Radiookkultationsmessungen aufgelöst werden. Aufgrund der sphärischen Symmetrieannahme im Retrievalverfahren und durch die niedrige horizontale Auflösung des Messverfahrens werden Phasenverschiebungen und Dämpfung der Amplitude verursacht, die zu beachtlichen Fehlern bei den abgeleiteten Temperaturen führen. Der Einfluss der geometrischen Wellenparameter und der Messgeometrie auf ebene Schwerewellen im Bereich 100-1000 km horizontale und 1-10 km vertikale Wellenlänge wird untersucht mit einem 2D-Modell, dass sich auf ein Gebiet von ±1000 km um den Tangentenpunkt und von 10-50 km in der Höhe erstreckt. Die Untersuchung zeigt, dass mit Radiookkultationsmessungen mehr als 90% der simulierten Wellen aufgelöst werden und mehr als 50% mit Amplituden oberhalb von 90% der ursprünglichen. Die geometrischen Parameter können jedoch nicht aus Einzelmessungen abgeleitet werden, da ein Signal zu verschiedenen Kombinationen von Wellenparametern und Sichtwinkel zugeordnet werden kann. Auch relativ kurze Wellen mit horizontalen Wellenlängen unterhalb von 200 km können korrekt in der Amplitude und Phase aufgelöst werden, falls die Neigung des Wellenvektors gegen die vertikale gering ist oder der Sichtwinkel des Empfängersatelliten in Richtung der Wellenberge ist
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Lange, Martin, and Christoph Jacobi. "Analysis of gravity waves from radio occultation measurements." Wissenschaftliche Mitteilungen des Leipziger Instituts für Meteorologie ; 26 = Meteorologische Arbeiten aus Leipzig ; 7 (2002), S. 101-108, 2002. https://ul.qucosa.de/id/qucosa%3A15225.

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In the height range 10–30 km atmospheric gravity waves lead to periodic perturbations of the background temperature field in the order of 2-3 K, that are resolved in temperature profiles derived from radio occultation measurements. Due to the spherical symmetry assumption in the retrieval algorithm and the low horizontal resolution of the measurement damping in the amplitude and phase shift of the waves occurs leading to remarkable errors in the retrieved temperatures. The influence of the geometric wave parameters and the measurement geometry on plane gravity waves in the range 100-1000 km horizontal and 1-10 km vertical wavelength is investigated with a 2D model ranging ±1000 km around the tangent point and 10-50 km in height. The investigation shows, that with radio occultation measurements more than 90 % of the simulated waves can be resolved and more than 50% with amplitudes above 90%. But the geometrical parameters cannot be identified, since one signal can be attributed to different combinations of wave parameters and view angle. Even short waves with horizontal wavelengths below 200 km can be derived correctly in amplitude and phase if the vertical tilt is small or the view angle of the receiver satellite is in direction of the wave crests.
Atmosphärische Schwerewellen führen im Höhenbereich 10-30 km zu periodischen Störungendes Hintergrundtemperaturfeldes in der Größenordnung von 2-3 K, die in Temperaturprofilen aus Radiookkultationsmessungen aufgelöst werden. Aufgrund der sphärischen Symmetrieannahme im Retrievalverfahren und durch die niedrige horizontale Auflösung des Messverfahrens werden Phasenverschiebungen und Dämpfung der Amplitude verursacht, die zu beachtlichen Fehlern bei den abgeleiteten Temperaturen führen. Der Einfluss der geometrischen Wellenparameter und der Messgeometrie auf ebene Schwerewellen im Bereich 100-1000 km horizontale und 1-10 km vertikale Wellenlänge wird untersucht mit einem 2D-Modell, dass sich auf ein Gebiet von ±1000 km um den Tangentenpunkt und von 10-50 km in der Höhe erstreckt. Die Untersuchung zeigt, dass mit Radiookkultationsmessungen mehr als 90% der simulierten Wellen aufgelöst werden und mehr als 50% mit Amplituden oberhalb von 90% der ursprünglichen. Die geometrischen Parameter können jedoch nicht aus Einzelmessungen abgeleitet werden, da ein Signal zu verschiedenen Kombinationen von Wellenparametern und Sichtwinkel zugeordnet werden kann. Auch relativ kurze Wellen mit horizontalen Wellenlängen unterhalb von 200 km können korrekt in der Amplitude und Phase aufgelöst werden, falls die Neigung des Wellenvektors gegen die vertikale gering ist oder der Sichtwinkel des Empfängersatelliten in Richtung der Wellenberge ist.
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Books on the topic "Occultation de la violence"

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Steiner, Andrea, Barbara Pirscher, Ulrich Foelsche, and Gottfried Kirchengast, eds. New Horizons in Occultation Research. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00321-9.

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Mauldin, L. E. Halogen occultation experiment integrated test plan. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1986.

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Buglia, James J. Photon counts from stellar occultation sources. [Washington, DC]: National Aeronautics and Space Administration, Scientific and Technical Information Office, 1987.

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Harvey, Gale A. Halogen Occultation Experiment (HALOE) optical filter characterization. Hampton, Va: Langley Research Center, 1989.

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Bernath, Peter F. The Atmospheric Chemistry Experiment ACE at 10: A solar occultation anthology. Hampton, Virginia, USA: A. Deepak Publishing, a Division of Science and Technology Corporation, 2013.

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Weinreb, Michael P. Balloon-based infrared solar occultation measurements of stratospheric O, HO, HNO, and CFC1. Washington, D.C: National Environmental Satellite, Data, and Information Service, 1987.

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Weinreb, Michael P. Balloon-based infrared solar occultation measurements of stratospheric O, HO, HNO, and CFC1. Washington, D.C: National Environmental Satellite, Data, and Information Service, 1987.

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Langwith, Jacqueline. Violence. Detroit, MI: Greenhaven Press, 2010.

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Vaze, Vrunda. Violence. Pune: Aalochana, 2007.

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Jacqueline, Langwith, ed. Violence. Detroit, MI: Greenhaven Press, 2010.

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Book chapters on the topic "Occultation de la violence"

1

Georgoudi, Stella. "L’«occultation de la violence» dans le sacrifice grec: données anciennes, discours modernes." In Bibliothèque de l'Ecole des Hautes Etudes, Sciences Religieuses, 115–47. Turnhout: Brepols Publishers, 2005. http://dx.doi.org/10.1484/m.behe-eb.4.00023.

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Rouan, Daniel. "Occultation." In Encyclopedia of Astrobiology, 1751–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_4011.

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Rouan, Daniel. "Occultation." In Encyclopedia of Astrobiology, 1160–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_4011.

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Rouan, Daniel. "Occultation." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_4011-2.

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Dyson, Freeman J. "Occultation Astronomy." In Observatories in Earth Orbit and Beyond, 413–15. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-3454-5_55.

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Ao, Chi O. "GPS, Occultation Systems." In Encyclopedia of Remote Sensing, 264–68. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-0-387-36699-9_61.

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Blick, Christian, and Sarah Eberle. "Radio Occultation via Satellites." In Handbook of Geomathematics, 1089–125. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-54551-1_100.

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Blick, Christian, and Sarah Eberle. "Radio Occultation via Satellites." In Handbook of Geomathematics, 1–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27793-1_100-1.

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Blick, Christian, and Sarah Eberle. "Radio Occultation via Satellites." In Handbook of Geomathematics, 1–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27793-1_100-2.

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Millis, Robert L. "Occultation Studies with Small Telescopes." In Instrumentation and Research Programmes for Small Telescopes, 199–211. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-010-9433-7_36.

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Conference papers on the topic "Occultation de la violence"

1

Demina, Natalya. "ANALYSIS OF 430322 LUNAR OCCULTATION." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/62/s28.113.

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Moeller, R. "Atmospheric Occultation Student (ATOS) experiment." In 38th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-9.

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Du, Qifei, Yueqiang Sun, Shijing Wang, Guangwu Zhu, Peng Tao, Zhengting Liu, and Weihua Bai. "Dual-band GPS occultation receiver." In Seventh International Symposium on Instrumentation and Control Technology, edited by Jiancheng Fang and Zhongyu Wang. SPIE, 2008. http://dx.doi.org/10.1117/12.807139.

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Zin, A., S. Zago, E. Mangolini, S. Landenna, L. Marradi, R. Notarpietro, S. Radicella, B. Nava, and V. Catalano. "The ROSA radio occultation project." In 2012 6th ESA Workshop on Satellite Navigation Technologies (Navitec 2012) & European Workshop on GNSS Signals and Signal Processing. IEEE, 2012. http://dx.doi.org/10.1109/navitec.2012.6423096.

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Bellini, Rosanna, Jay Rainey, Andrew Garbett, and Pamela Briggs. "Vocalising Violence." In C&T 2019: The 9th International Conference on Communities & Technologies - Transforming Communities. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3328320.3328405.

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Gordley, Larry L., R. Earl Thompson, Guy M. Beaver, James M. Russell III, Lance E. Deaver, and Mark E. Hervig. "Impact of Pinatubo aerosol extinction on the Halogen Occultation Experiment (HALOE) infrared occultation measurements." In SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, edited by Jinxue Wang and Paul B. Hays. SPIE, 1994. http://dx.doi.org/10.1117/12.187596.

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Sweeney, David, Chi Ao, Panagiotis Vergados, Nilton Renno, David Kass, and German Martinez. "Enabling Mars Radio Occultation by Smallsats." In 2021 IEEE Aerospace Conference. IEEE, 2021. http://dx.doi.org/10.1109/aero50100.2021.9438147.

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Liu, Congliang, Gottfried Kirchengast, Yueqiang Sun, Qifei Du, Weihua Bai, Veronika Proschek, Xianyi Wang, et al. "Study on LEO-LEO microwave occultation." In 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS). IEEE, 2017. http://dx.doi.org/10.1109/igarss.2017.8127009.

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Russell III, James M. "Overview of the halogen occultation experiment." In Orlando '91, Orlando, FL, edited by James L. McElroy and Robert J. McNeal. SPIE, 1991. http://dx.doi.org/10.1117/12.46653.

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Kennedy, Traci M., Rosanne M. Jocson, Francheska Alers-Rojas, and Rosario Ceballo. "76 Preventing the cycle of violence: community violence exposure and attitudes toward violence among latino adolescents." In SAVIR 2017. BMJ Publishing Group Ltd, 2017. http://dx.doi.org/10.1136/injuryprev-2017-042560.76.

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Reports on the topic "Occultation de la violence"

1

Miller, Richard, M. Ajello, J. F. Beacom, Peter Forbes Bloser, Adam Burrows, Christopher Lee Fryer, J. O. Goldsten, et al. Ex Luna, Scientia: The Lunar Occultation eXplorer (LOX). Office of Scientific and Technical Information (OSTI), July 2019. http://dx.doi.org/10.2172/1544647.

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Barclay, Keith A. Ethnic Violence in Moldolva. Fort Belvoir, VA: Defense Technical Information Center, May 2002. http://dx.doi.org/10.21236/ada403991.

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Alesina, Alberto, Salvatore Piccolo, and Paolo Pinotti. Organized Crime, Violence, and Politics. Cambridge, MA: National Bureau of Economic Research, March 2016. http://dx.doi.org/10.3386/w22093.

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Castro-Pantoja, John David, José Eduardo Gómez-González, Tatiana Mora-Arbelaez, Daniela Rodriguez-Novoa, and Laura Catalina Díaz-Barreto. Bancarization and Violence in Colombia. Bogotá, Colombia: Banco de la República, September 2018. http://dx.doi.org/10.32468/be.1052.

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Aizer, Anna. Neighborhood Violence and Urban Youth. Cambridge, MA: National Bureau of Economic Research, February 2008. http://dx.doi.org/10.3386/w13773.

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Miguel, Edward, Sebastián Saiegh, and Shanker Satyanath. National Cultures and Soccer Violence. Cambridge, MA: National Bureau of Economic Research, April 2008. http://dx.doi.org/10.3386/w13968.

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Williams, Phil, and Vanda Felbab-Brown. Drug Trafficking, Violence, and Instability. Fort Belvoir, VA: Defense Technical Information Center, April 2012. http://dx.doi.org/10.21236/ada560718.

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Rogers, Patrick. Domestic Violence and Other Poems. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6345.

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Bailey, Corin. Crime and Violence in Barbados: IDB Series on Crime and Violence in the Caribbean. Inter-American Development Bank, June 2016. http://dx.doi.org/10.18235/0000332.

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Harriott, Anthony D., and Marlyn Jones. Crime and Violence in Jamaica: IDB Series on Crime and Violence in the Caribbean. Inter-American Development Bank, June 2016. http://dx.doi.org/10.18235/0000333.

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