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1
Sánchez, García Alba. "Paleobiología de los artrópodos edáficos y acuáticos del ámbar del Cretácico Inferior de España." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/461597.
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El objetivo principal de la Tesis realizada ha consistido en el conocimiento de la fauna de organismos edáficos y acuáticos preservados como bioinclusiones en ámbar español de los yacimientos albienses de Peñacerrada I y I , San Just y El Soplao, aunque se han tratado secundariamente otros
registros extranjeros. El hallazgo de estos grupos es excepcional por
su rareza en el registro
fósil, y
su estudio ha permitido avanzar en el conocimiento de la composición, diversidad y ecología de los paleoecosistemas terrestres del Cretácico Inferior de la Península Ibérica. Así mismo, se ha hecho especial énfasis en el estudio de las piezas de ámbar de hojarasca “litter amber”, con origen en las emisiones de resina que alcanzaron la parte más superficial del suelo del bosque.
El estudio sistemático de los artrópodos relacionados con ambientes edáficos y acuáticos preservados en el ámbar de España ha mostrado una gran diversidad, y el primero también una gran disparidad. Para un total de 165 inclusiones de artrópodos catalogadas, se ha determinado un
orden de arácnidos (Oribatida con cinco familias identificadas), dos de crustáceos (Tanaidacea con
dos familias; e Isopoda con tres familias) y seis de hexápodos (Entomobryomorpha con una familia; Symphypleona con tres; Archaeognatha con dos; Hemiptera con dos, Coleoptera con una; y un Isoptera clasificado en el grado “Meiatermes”). Muchas de las fam lias identificadas cuentan en el ámbar de España con sus rep esentantes más antiguos conocidos. En algunos casos se ha identificado el único representante del Mesozoico y en otros los ejemplares reconocidos son los únicos en todo el registro fósil para sus respectivas familias.
A pesar de que el sistema suelo/hojarasca representa un ambiente poco favorable para la fosilización de la biota, y que sus habitantes suelen ser ormas ápteras de hábitos crípticos, la abundancia documentada en el ámbar de España y el análisis tafonómico revelan que exudaciones de resina muy fluidas y copiosas llegaron al suelo del bosque y atraparon organismos diversos y restos de otro tipo que se encontraban en la superficie del suelo. Por ello, las piezas de ámbar de hojarasca constituyen una fuente de información valiosa para comprender estos ecosistemas.
Todos los grupos identificados indican un ambiente muy húmedo. Esto es congruente con el escenario propuesto para los bosques cretácicos de gimnospermas de Iberia productores de resina, para los que se ha descrito una vegetación tropical/subtropical y un clima cálido y húmedo. Estos grupos debieron desempeñar un papel importante en el procesado de la materia orgánica en descomposición que se acumulaba en el suelo del bosque.
El hallazgo de algunos ejemplares que muestran adaptaciones a la vida acuática (colémbolos, heterópteros y coleópteros) indica que en el bosque húmedo cretácico se desarrollaron diferentes ambientes acuáticos (tanto lóticos: ej. ríos y arroyos; como lénticos: ej. lagunas y charcas) con sus propias biocenosis. Se trata de grupos semiacuáticos que quedaron atrapados en la resina fuera del agua.
La paleoetología se ha centrado principalmente en tres cuestiones: evidencias de cuidado parental, evidencias de cortejo, y evidencias de comportamientos de agregación (en dos grupos diferentes).
La estabilidad en el tiempo profundo de las condiciones ecológicas generales y de los modos de vida de los organismos que habitaron la hojarasca de los suelos de los bosques explica la estasis morfológica y etológica observada en estos grupos, y también las similitudes entre los organismos estudiados en el ámbar de España y los estudiados en los ámbares cretácicos más antiguos del Líbano y menos antiguos de Francia.
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Pérez, de la Fuente Ricardo. "Paleobiología de los artrópodos del ámbar cretácico de El Soplao (Cantabria, España) = Arthropod paleobiology of the cretaceous amber from El Soplao (Cantabria, Spain)." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/132691.
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El yacimiento de ámbar de El Soplao (Rábago, Cantabria), de edad Cretácico Inferior (hace unos 110 millones de años), ha proporcionado a día de hoy más de 500 bioinclusiones de artrópodos. El estudio morfológico y sistemático de los artrópodos del ámbar de El Soplao se ha centrado en rafidiópteros, neurópteros y algunos grupos de dípteros, himenópteros y arañas, y ha permitido realizar inferencias paleoecológicas, paleobiogeográficas y paleoetológicas. Estos datos han complementado los datos geológicos y otros datos paleontológicos (como los paleobotánicos), que, en suma, han conducido a una reconstrucción paleoambiental. La presente Tesis Doctoral se basa en un total de once artículos.
Las plantas productoras de resina que dieron origen al ámbar de El Soplao, coníferas pertenecientes al menos a la familia extinta Cheirolepidiaceae y a otro grupo diferente por determinar, se desarrollarían cerca de la costa marina. Los incendios, como parte integrante de la dinámica del ecosistema, tuvieron un papel determinante en la producción y posterior acumulación de resina que dio lugar al yacimiento, provocando la secreción traumática de resina (en la que los insectos barrenadores de madera pudieron haber colaborado) y eliminando la cobertura vegetal del suelo del bosque. Ello facilitó que el agua de escorrentía erosionara el suelo y movilizara la resina depositada primariamente. Esta resina sufrió un corto transporte y se depositó de un modo paraauctóctono en las áreas de enterramiento definitivo, al no existir indicios de reelaboración ni retrabajamiento del ámbar. Estas áreas donde la resina quedó enterrada y fosilizó corresponden a ambientes de marjal costero o de estuario asociado a una llanura deltaica. Algunas masas de resina presentaron un largo periodo de exposición en las aguas salobres o marinas antes de enterrarse.
Pese a hallarse en una fase de estudio inicial, la diversidad identificada de artrópodos en el ámbar de El Soplao es elevada, y en algunas casos ha brindado el registro más antiguo conocido de ciertos taxones. En un total de 549 inclusiones de artrópodos catalogadas, se han determinado 13 órdenes de hexápodos repartidos en unas 40 familias, cuatro órdenes de arácnidos y uno de crustáceos. La paleofauna de artrópodos de El Soplao muestra una serie de singularidades, tanto cuantitativas como cualitativas, en comparación con el resto de paleofaunas conocidas de los ámbares cretácicos. Estas singularidades paleofaunísticas tanto a nivel cuantitativo como cualitativo en el ámbar de El Soplao, aparte de los factores tafonómicos y teniendo además en cuenta los hallazgos anteriores en el ámbar de Peñacerrada I, podrían reflejar un cierto carácter endémico de los ecosistemas ibéricos durante el Albiense debido a la insularidad que la Placa Ibérica adquirió en el Jurásico Inferior.
Existen tres especies de insectos comunes a los ámbares de El Soplao y Peñacerrada I (= Moraza). Ello sugiere una edad muy similar para ambos yacimientos de la Cuenca Vasco‐Cantábrica. Además, se han advertido ciertas similitudes entre las paleofaunas del ámbar de España (El Soplao y Peñacerrada I) (Albiense) y las del ámbar del Líbano (Barremiense‐ Aptiense), aunque se hallen espaciadas en el tiempo por varios millones de años. No obstante, es necesario aumentar las colecciones de los ámbares españoles para dar mayor fundamento a estas observaciones, así como revisar las dataciones del ámbar del Líbano.
La elevada proporción de sininclusiones y muestras que brindan información paleoetológica o acerca de interacciones paleobióticas, tanto intraespecíficas como interespecíficas, dan al ámbar de El Soplao un elevado valor paleoecológico. Existen casos de posible enjambramiento, de cópula, de camuflage/defensa, de relación planta‐insecto, de parasitismo, de posible hematofagia y de posible relación depredador‐presa.The El Soplao amber outcrop (Rábago, Cantabria, Northern Spain), Early Cretaceous in age (about 110 Mya), has currently provided more than 500 arthropod inclusions. This PhD dissertation aimed to achieve in‐depth knowledge of the paleobiology associated with the arthropods from the El Soplao amber outcrop, allowing for a preliminary comparison with primary Cretaceous amber outcrops. This was possible only after a thorough systematic treatment of El Soplao arthropod inclusions that inferred their paleoautoecological, paleobiogeographical and paleoethological contexts to, ultimately, glean a holistic understanding of the paleoenvironmental setting. The resin‐producing plants responsible for El Soplao amber are conifers belonging to the extinct family Cheirolepidiaceae and, at least, another unknown conifer group. These trees would have lived close to the paleo‐coastline. Paleofires played a leading role in the production and accumulation of resin. The areas where the resin was buried and fossilized correspond to marshy or delta‐estuarine environments. Some resin pieces had a long exposure time to marine or brackish waters before being buried. Identified arthropod diversity is high, and the outcrop has provided the oldest known records for certain taxa. Thirteen hexapod orders (composed by about 40 families), four arachnid orders, and one crustacean order have been determined. The arthropod fauna from El Soplao is quantitatively and qualitatively singular when compared to faunas from other known Cretaceous ambers. Three insect species occur in both the El Soplao and Peñacerrada I (=Moraza) outcrops. The shared species between these two Basque‐Cantabrian Basin outcrops suggest they are similar in age. Moreover, similarities have been noted between the paleofauna from the Spanish amber outcrops (El Soplao and Peñacerrada I) (Albian) and the paleofauna from Lebanon (Barremian‐Aptian), despite these outcrops are separated in time by several million years. El Soplao amber is valuable in the abundance of syninclusions and samples that provide information about paleoethology and paleobiotic interactions. There are instances of possible swarming, mating, camouflage/defense, plant‐insect relationship, parasitism, possible hematophagy and possible predator‐prey relationship. An expanded English summary is provided at the end of the dissertation.
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Amblard, Anne Brunet Michel Bou-Saïd Benyebka. "Contribution à l'étude du comportement d'une endoprothèse aortique abdominale analyse des endofuites de type I /." Villeurbanne : Doc'INSA, 2007. http://docinsa.insa-lyon.fr/these/pont.php?id=amblard.
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Vera, Fernando. "La sustentabilidad de Ambato." Pontificia Universidad Católica del Perú. Centro de Investigación en Geografía Aplicada, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/119945.
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Amberg, Irmgard [Verfasser]. "Divergierende höchstrichterliche Rechtsprechung. / Irmgard Amberg." Berlin : Duncker & Humblot, 2021. http://d-nb.info/1238276385/34.
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Millour, Florentin. "Interférométrie différentielle avec AMBER." Phd thesis, Université Joseph Fourier (Grenoble), 2006. http://tel.archives-ouvertes.fr/tel-00134268.
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L'interférométrie optique en astronomie est une technique permettant de sonder les objets observés à une résolution spatiale impossible à atteindre avec un télescope unique. Ce domaine d'instrumentation entre dans une nouvelle phase avec l'arrivée de nouveaux instruments combinant de très grands télescopes sur des bases allant jusqu'à 200m. AMBER (Astronomical Multi BEam Recombiner) est l'instrument recombineur à trois télescopes du VLTI (Very Large Telescope Interferometer) qui apporte à la fois de la résolution spectrale et des capacités d'imagerie sur cette infrastructure à la pointe de la recherche astrophysique. Je présente dans cette thèse mon apport au traitement du signal de l'instrument AMBER afin d'obtenir les observables nécessaires à l'exploitation scientifique des données. J'y présente l'approche dans le plan image qui a été utilisée et validée sur le ciel avec cet instrument, insi que les observables différentielles chromatiques que j'ai développées spécifiquement. Les observables différentielles chromatiques consistent à comparer la mesure de franges enregistrées simultanément entre deux longueurs d'ondes proches. Cela permet de reconstruire une fraction très substancielle de l'information de phase de l'objet, perdue par les estimateurs classiques jusque là utilisés en interférométrie. Je développe aussi le potentiel de ces observables ainsi que leur application pratique sur l'étude de divers objets astrophysiques dont les étoiles à enveloppe et les objets binaires.
7
Spencer, Courtney J., and Courtney Spencer. "From Amber to Darkness." ScholarWorks@UNO, 2012. http://scholarworks.uno.edu/td/1577.
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8
Knippel, Mark Jacob 1983. "The Amber of the Moment." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/11486.
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1 score (vii, 56 p.) Includes one sound recording in AIFF (Audio Interchange File Format)Committee in charge: Dr. David Crumb, Chairperson; Dr. Robert Kyr, Member; Dr. Stephen Rodgers, Member
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Foschini, Federico. "Amber: a Cloud Service Architecture proposal." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13840/.
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Al giorno d’oggi, Cloud, Internet Of Things e Big Data sono tra i topic di maggior interesse, considerando il ruolo centrale che il dato sta assumendo sempre di più.
Infatti, le nuove tipologie di soluzioni sono sempre più dedicate alla gestione e collezione dei dati per poter supportare i processi di analisi atti a migliorare il business aziendale.
I processi di progettazione di queste soluzioni spesso sono particolarmente complessi e richiedono un effort importante, aumentandone quindi la complessità.
Inoltre, la progettazione delle soluzioni interessate sono particolarmente correlate alla piattaforma ed alle tecnologie utilizzate, introducendo quindi criticità legate a tali dipendenze.
Questa tesi propone la definizione di un modello di architettura che volta a supportare la progettazione di diverse tipologie di soluzioni Cloud per agevolare, semplificare e migliorare la loro progettazione.
Uno degli obiettivi di questo modello è la trasparenza rispetto agli aspetti tecnologici. Infatti, è stato descritto come questo modello di architettura possa agire da wrapper tra la soluzione realizzata e la piattaforma che la ospita, rendendo così trasparente la complessità tecnologica.
I moduli dell’architettura possono quindi essere distribuiti su diverse piattaforme, senza che ne vengano influenzate le caratteristiche e funzionalità, grazie alla loro indipendenza.
All’interno della tesi viene proposto anche un caso di studio reale che mostra come possa essere effettuato il porting di un sistema Web su Cloud adottando l’architettura proposta.
Il sistema interessato dal caso di studio è UniSAS, soluzione appartenente al contesto Smart Living, dedicata al miglioramento dell’accessibilità e al controllo degli accessi.
L’architettura che viene definita e descritta in questa tesi permette quindi di ottimizzare l’effort e le risorse necessarie alla progettazione di soluzioni Cloud multi-piattaforma e multi-contesto, con l’obiettivo di ridurne la complessità e criticità.
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Bray, P. Sargent. "A geochemical investigation of Carboniferous amber /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1456287211&sid=3&Fmt=2&clientId=1509&RQT=309&VName=PQD.
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Valencia, Peña Pilar Alue. "Estado nutricional de la población menor de 5 años adscrita al puesto de salud Aynaca en el 2013." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/3580.
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El puesto de salud de Aynaca pertenece a la Microrred Huaura, Red Huaura-Oyon, DIRESA Lima. Se encuentra ubicado en la localidad de Aynaca del distrito de Ámbar. Es uno de los establecimientos más distantes de esta microrred, se encuentra a 70 km de Huaura. No se encontraron registros exactos de la población adscrita al Puesto de Salud Aynaca, ni registros durante el año 2013. Este trabajo permite no sólo conocer el estado nutricional antropométrico infantil en un pueblo perteneciente al departamento de Lima, sino también conocer la situación de la población infantil. El objetivo es determinar el estado nutricional de la población menor de 5 años adscrito al Puesto de Salud de Aynaca en el 2013. La población está constituida por niños menores de 5 años (desde los 0 meses hasta antes de cumplir los 60 meses) adscritos al puesto de salud Aynaca en el año 2013. Obtiene la información de su edad, peso y talla. Se analiza los datos sobre la valoración nutricional y la severidad de ésta, utilizando las tablas de la OMS y posteriormente acuerdo a la clasificación de la OMS, Waterlow-OPS, OMS utilizada por el MINSA según sexo y edad.
Encuentra que del universo de 84 niños encontrados, se excluyeron cuatro (04) por no encontrarse datos de peso ni de talla en los registros de CRED ni en su respectiva historia clínica durante el año 2013. De los 80 niños restantes que constituyen la población del estudio. La prevalencia de la desnutrición crónica de la población menor de 5 años adscrita al Puesto de Salud Aynaca según la clasificación de Waterlow-OPS es de 28%,según Waterlow modificado de 17.5% y según OMS-MINSA de 17.5%.La prevalencia de desnutrición aguda según la clasificación de Waterlow-OPS fue de 10%,según Waterlow modificado de 7.5% y según OMS-MINSA de 5%.La prevalencia de población eutrófica según la clasificación de Waterlow-OPS es de 55%, según 2 Waterlow modificado de 40% y según OMS-MINSA de 82.5%. La prevalencia de sobrepeso en según la clasificación de Waterlow-OPS fue de 25% y según OMS-MINSA de 8.75%. La prevalencia de obesidad según la clasificación de Waterlow-OPS fue de 10%, según Waterlow modificado de 20%.
Concluye que los niños eutróficos prevalecen en todas las clasificaciones utilizadas en el presente estudio. Existen diferencias al evaluar el estado nutricional de los niños menores de 5 años adscritos al Puesto de Aynaca, al utilizar las diferentes clasificacionesTesis
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Amberg, Bastian [Verfasser]. "Robuste Effizienz des Ressourceneinsatzes im öffentlichen Personennahverkehr / Bastian Amberg." Berlin : Freie Universität Berlin, 2017. http://d-nb.info/1135608091/34.
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Ambach, Jördis [Verfasser]. "Reichweite und Bedeutung von Art. 25 EuInsVO. / Jördis Ambach." Berlin : Duncker & Humblot, 2009. http://d-nb.info/1238361536/34.
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Lindner, Dominic [Verfasser], Michael [Akademischer Betreuer] Amberg, and Michael [Gutachter] Amberg. "Aktuelle Auswirkungen der Digitalisierung auf KMU mit Fokus auf wissensintensiven Dienstleistungen - Ergebnisse von mehrstufigen Studien / Dominic Lindner ; Gutachter: Michael Amberg ; Betreuer: Michael Amberg." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2020. http://d-nb.info/1219303534/34.
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Owen, Jennifer Chowning. "Forever Amber the impact of the Amber Room on Russia's cultural stature then, now and in the future /." Connect to Electronic Thesis (CONTENTdm), 2009. http://worldcat.org/oclc/457041064/viewonline.
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Ashlock, Clint Rudy Paul. "Amber canvas a composition for jazz orchestra /." Diss., UMK access, 2006.
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Thesis (M.M.)--Conservatory of Music. University of Missouri--Kansas City, 2006."A thesis in music composition." Advisor: Paul Rudy. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed Nov. 12, 2007. Online version of the print edition.
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Sánchez-Concha, Barrios Rafael. "Las expediciones descubridoras : la entrada al país de Ambaya (1538)." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/113910.
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Hernandez, Utrera Oscar. "Optimisation du traitement de l’information issue de l’instrument amber." Université Joseph Fourier (Grenoble), 2008. http://www.theses.fr/2008GRE10076.
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L'interférométrie optique/infrarouge à longue base pennet aux astronomes de sonder l'univers avec une résolution de l'ordre du millième de seconde d'arc. La construction de nouveaux recombinateurs interférométriques a présenté la nécessité de développer une méthodologie du traitement du signal appropriée pennettant de profiter au maximum de toutes leurs capacités. Parmi la prémière génération des recombineurs des faisceaux du VLTI (Very Large Telescope Interferometer), l'instrument AMBER fonctionne dans l'infrarouge proche et peut recombiner les faisceaux de deux ou trois télescopes simultanément. Ce travail est entièrement consacré à l'analyse et à l'amélioration des algorithmes de traitement de données issues de l'instrument AMBER, en se focalisant principalement sur les observables interférométriques absolus. Nous commençons notre discussion par un bref rappel des principes de l'interférométrie stellaire. Nous présentons l'instrument AMBER et nous introduisons en détaille traitement de données standard. Ensuite, nous développons un algorithme de réduction de données indépendant qui nous pennet, d'un côté, de tester et de valider l'algorithme standard et, d'un autre côté, de développer un algorithme robuste pour estimer le piston atmosphérique. Finallement, nous appliquons ces méthodes améliorées aux observations de l'étoile Bételgeuse. La confinnation de son diamètre demontre, de manière complètement indépendante, la stabilité de AMBER sur le ciel et sa capacité à produire des visibilités absolues fiablesLong baseline optical/infrared interferometry allows the astronomers to probe the Universe with a milliarcseconds resolution. The construction of new interferometric beam combiners presented the necessity to develop the appropriate data processing methodology allowing to take the maximum advantage of ail their capacities. Among the fitst generation beam combiners of the VL TI (Very Large Telescope Interferometer), AMBER (Astronomical MultiBEam Recombiner) instrument operates in the near infrared and is able to combine the beams of two or three telescopes simultaneously. This work is entirely devoted to the validation and the improvement of the AMBER data processing algorithms, focusing on absolute interferometric observables. We start our discussion with a brief overview of the foundations of the stellar interferometry. Likewise, we present the AMBER instrument, and we introduce in detail the standard data processing. Then, we develop an independent data processing software which allow us, in one hand, to test and validate the standard processing approach, and in the other hand, to develop the improved data processing algorithms. We provide an improved data processing algorithm to reduce AMBER data, and we developed a robust algorithm to estimate the atmospheric piston. Finally, we apply these improved approaches to the observations of the star Betelgeuse. The confinnation of the diameter of the star demonstrates, from a completely independent way, the stabilitv of AMBER on the skv and its abilitv to Droduce reliable absolute visibilities
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Valentini, Samuel. "Pont AMBA - Wishbone /." Sion, 2007. http://doc.rero.ch/record/10763?ln=fr.
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Amberg, Michael [Verfasser]. "Entwicklung eines schnellen, piezobasierten Frequenztuners für supraleitende CH-Kavitäten / Michael Amberg." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2015. http://d-nb.info/1225749484/34.
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Amberg, Boris [Verfasser]. "Ressourceneinsatzplanung im öffentlichen Personennahverkehr : Ähnlichkeitsaspekte in der fahrplanübergreifenden Optimierung / Boris Amberg." Paderborn : Universitätsbibliothek, 2015. http://d-nb.info/106915959X/34.
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Blight, Sherry Kathleen. "Amber codon translation as pyrrolysine in Methanosarcina spp." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1149012579.
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Longstaff, David Gordon. "Requirements and rationale for amber translation as pyrrolysine." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196107921.
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Thornby, John Albert. "AMBER : a novel approach to neutrino mass measurement." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/56292/.
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The existence of neutrino oscillations demands that neutrinos have non-zero rest mass, the evidence for and implications of which are discussed. Nuclear B-decay is offered as a model-independent tool for direct neutrino mass measurement and contemporary experimental measurements are reviewed. The AMBER experiment is introduced as a novel charge spectrometer, aimed at precision electron energy measurements to probe the structure of the B-spectrum close to its endpoint. AMBER employs a vacuum insulated inverse Kelvin probe to continuously monitor a single rate-of-change observable. A detailed technical description of the technique is provided, followed by proof of principle demonstrations and an examination of hardware performance and its capability to provide sub-eV electron energy resolution. a first order B-spectrum reconstruction algorithm is described and applied to data from a Monte Carlo simulation of a highly idealised AMBER-like model experiment, in which important source scattering effects are neglected, and a calculation of the sensitivity to the neutrino mass is made. Finally the successes and shortcomings of the AMBER technique are discussed.
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Pastorelli, Gianluca <1975>. "Archaeological Baltic amber: degradation mechanisms and conservation measures." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/2259/.
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The aim of this project was to achieve a deep understanding of the mechanisms by
which Baltic amber degrades, in order to develop techniques for preventive
conservation of archaeological amber objects belonging to the National Museum of
Denmark’s collections.
To examine deterioration of Baltic amber, a starting point was to identify and monitor
surface and bulk properties which are affected during degradation.
The way to operate consisted of the use of accelerated ageing to initiate degradation
of raw Baltic amber samples in different conditions of relative humidity, oxygen
exposure or pH and, successively, of the use of non/micro-destructive techniques to
identify and quantify changes in visual, chemical and structural properties.
A large piece of raw Baltic amber was used to prepare several test samples for two
different kinds of accelerated ageing: thermal-ageing and photo-ageing.
During the ageing, amber samples were regularly examined through several analytical
techniques related to different information: appearance/colour change by visual
examination, photography and colorimetry; chemical change by infrared
spectroscopy, Raman spectroscopy and elemental analysis; rate of oxidation by
oxygen measurement; qualitative analysis of released volatiles by gas
chromatography – mass spectrometry.
The obtained results were analysed through both critical evaluation and statistical
study.
After the interpretation of the achieved data, the main relations between amber and
environmental factors during the degradation process became clearer and it was
possible to identify the major pathways by which amber degrades, such as hydrolysis
of esters into alcohols and carboxylic acids, thermal-oxidation and photo-oxidation of
terpenoid components, depolymerisation and decomposition of the chemical structure.
At the end it was possible to suggest a preventive conservation strategy based on the
control of climatic, atmospheric and lighting parameters in the environment where
Baltic amber objects are stored and displayed.
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Schoeman, Adam. "Amber : a aero-interaction honeypot with distributed intelligence." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017938.
Full textAbstract:
For the greater part, security controls are based on the principle of Decision through Detection (DtD). The exception to this is a honeypot, which analyses interactions between a third party and itself, while occupying a piece of unused information space. As honeypots are not located on productive information resources, any interaction with it can be assumed to be non-productive. This allows the honeypot to make decisions based simply on the presence of data, rather than on the behaviour of the data. But due to limited resources in human capital, honeypots’ uptake in the South African market has been underwhelming. Amber attempts to change this by offering a zero-interaction security system, which will use the honeypot approach of decision through Presence (DtP) to generate a blacklist of third parties, which can be passed on to a network enforcer. Empirical testing has proved the usefulness of this alternative and low cost approach in defending networks. The functionality of the system was also extended by installing nodes in different geographical locations, and streaming their detections into the central Amber hive.
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Hoßbach, Nadja [Verfasser], Michael [Akademischer Betreuer] Amberg, and Michael [Gutachter] Amberg. "Configurations, Outcomes, and Dynamics of Coexisting Traditional and Online Business Models: Studies on Established German Publishing and Retail Companies / Nadja Hoßbach ; Gutachter: Michael Amberg ; Betreuer: Michael Amberg." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/1164233068/34.
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Amberg, Anni. "A story of names : a zigzag road to finding my feet via Mexico, India, Nepal, England, Italy and Iceland : a memoir /." Connect to online version, 2009. http://ada.mtholyoke.edu/setr/websrc/pdfs/www/2009/385.pdf.
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Buyukuslu, Nihal. "A biochemical and genetic investigation of the beta subunit of E. coli RNA polymerase." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319619.
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Akre, Anders Tvetmarken, and Sebastian Bøe. "Turbo Amber : A high-performance processor core for SHMAC." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for datateknikk og informasjonsvitenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-27043.
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The performance increase of state of the art processors has stagnated dueto power and thermal constraints. Heterogeneous computing has latelyattracted interest and may be the key for improving the performanceand energy-efficiency of computing systems under their tight physicalbudgets. The Single-ISA Heterogeneous MAny-core Computer (SHMAC)project is a research project that seeks to explore the challenges ofheterogeneous computing. Therefore, the SHMAC project requires adiversity of processor cores of different size and performance, to exploreheterogeneous architectures.Currently, there is only one processor core, Amber, available for SHMAC.This thesis presents the development of Turbo Amber (TA), a high-performance processor core for SHMAC. We present an overview of high-performance processor architecture techniques and extend the existingAmber core with a branch predictor, a return address stack, an instructionqueue and a fast multiplier. The front-end of TA is capable of fetchingand performing branch prediction on up to four instructions each clockcycle and can be extended with an appropriate back-end for superscalarexecution.Our results show that TA has a performance increase of 49% over theoriginal Amber core, with a moderate increase in FPGA resource utiliza-tion: slice utilization from 4.7% to 7.9%, block RAM utilization from1.0% to 3.3%, and no DSP slices used on a Xilinx Virtex-5 FPGA. TAhas also been integrated into the existing SHMAC-infrastructure andverified by running applications on top of Linux and freeRTOS.
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Melton, Jimmy Robert. "Amber Valley: A black enclave in northern Alberta, Canada." CSUSB ScholarWorks, 1994. https://scholarworks.lib.csusb.edu/etd-project/940.
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Henwood, Alison Ayodele. "Insect taphonomy from Tertiary amber of the Dominican Republic." Thesis, University of Cambridge, 1993. https://www.repository.cam.ac.uk/handle/1810/251539.
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Grunenkova, Svetlana. "Fosilinių sakų tyrimas infraraudonosios spektroskopijos metodu." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184340-36778.
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Pasaulyje yra žinoma apie 150 fosilinių sakų rūšių. Didžioji jų dalis randama Šiaurės
pusrutulyje, Europoje ir Amerikoje. Be to, vis daugiau fosilinių sakų aptinkama Azijoje, Afrikoje,
Pietų Amerikoje.Vienas labiausiai paplitusių fosilinių sakų – Baltijos gintaras – nuo seno naudojamas
papuošalų, buitinių ir liturginių reikmenų, smulkiosios plastikos gamybai, medžio, kaulo ir kitų
dirbinių dekoravimui. Nuo XIX a. pradžios mėginta analizuoti gintarą, nesuardant jo pirminės
medžiagos, tačiau nesėkmingai. Tik išaiškinta, kad gintarą sudaro alkoholyje tirpi dalis ir jokiame
tirpiklyje netirpstantis likutis, pavadintas sukcinitu. Dabar gintaro chemijos tyrimams pasitelkiami
nauji cheminės ir fizikinės analizės metodai: chromatografija, IR spektroskopija, branduolinis
magnetinis rezonansas, masių spektroskopija ir kiti.
Šio darbo tikslas buvo infraraudonosios spektroskopijos analizės metodu ištirti ir palyginti
tarpusavyje kelių rūšių fosilinių sakų pavyzdžius iš skirtingų šalių archeologinių radimviečių: Baltijos
pajūrio (Lietuva) „šiuolaikinį“ skaidrųjį gintarą, Benaičių ir Turlojiškių archeologiniuose
kompleksuose (Lietuva) rastus archeologinio gintaro pavyzdžius, tamsųjį archeologinį Japonijos
gintarą, fosilinius sakus iš Centrinio Libano archeologinės radimvietės ir fosilinius sakus iš Šiaurės
Paryžiaus Orsi kvartalo archeologinės radimvietės. Nustatyta, kad fosiliniai sakai iš Japonijos,
Centrinio Libano ir Paryžiaus archeologinių radimviečių tikrai nėra Baltijos regiono... [toliau žr. visą tekstą]Amber is a fossilized form of terpenoid resins. Unlike other fossil, amber is completely organic in nature, and its chemical composition remains almost constant over millions of years. Chemical characteristics of amber are a consequence of both biological origins and geological enviroment. Have been proposed different characterization techniques such as IR spectroscopy, NMR and other. By these methods chemical structure can be derived. However, these techniques do not allow totally exclusive distinction, because spectral differences cannot be universally established for all the samples. The main aim of this work was to characterize some samples of fossil resins from different countries. Six fossil resins were campared: ,,contemporary” Baltic transparent amber (Lithuania), archeological amber from Benaičiai and Turlojiškės (Lithuania), archeological amber from Japan, fossil resin from Central Lebanon and fossil resin from North Paris. These fossil resin were analyzed using IR spectroscopy method. IR spectra of fossil resin showed a presence of these groups: O─H (in polymers), ─CH3 and ─CH2─, ―Si─O─Si― or ―Si─O─C―. Come to a conclusion, the chemical structure and features of all analyzed fossil resin are similar. But they have the differences too. Fossil resins from Lithuania (Baltic transparent amber and archeological amber from Benaičiai and Turlojiškės) spectra have an absorption band at wavelength 1250-1175 cm-1, which is called ,,Baltic shoulder” by Beck. Fossil resins... [to full text]
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Griffith, Anne Langdon Susan Helen. "Pieces of the sun amber in Mycenaean economy and society /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2009. http://hdl.handle.net/10355/6734.
Full textAbstract:
Figures removed from thesis by author. The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on March 19, 2010). Thesis advisor: Dr. Susan Langdon. Includes bibliographical references.
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Cheng, Wang. "AMBER : a domain-aware template based system for data extraction." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:ff49d786-bfd8-4cd4-a69c-19e81cb95920.
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The web is the greatest information source in human history, yet finding all offers for flats with gardens in London, Paris, and Berlin or all restaurants open after a screening of the latest blockbuster remain hard tasks – as that data is not easily amenable to processing. Extracting web data into databases for easier processing has been a resource-intensive process, requiring human supervision for every source from which to extract. This has been changing with approaches that replace human annotators with automated annotations. Such approaches could be successfully applied to restricted settings such as single attribute extraction or for domains with significant redundancy among sources. Multi-attribute objects are often presented on (i) Result pages, where multiple objects are presented on a single page as lists, tables or grids, with most important attributes and a summary description, (ii) Detail pages, where each page provides a detailed list of attributes and long description for a single entity, often in rich format. Both result and detail pages are having their own advantages. Extracting objects from result pages is orders of magnitude faster than from detail pages, and the links to detail pages are often only accessible through result pages. Detail pages have a complete list of attributes and full description of the entity. Early web data extraction approaches requires manual annotations for each web site to reach high accuracy, while a number of domain independent approaches only focus on unsupervised repeated structure segmentation. The former is limited in scaling and automation, while the latter is lacked in accuracy. Recent automated data extraction systems are often informed with an ontology and a set of object and attribute recognizers, however they have focused on extracting simple objects with few attributes from single-entity pages and avoided result pages. We present an automatic ontology-based multi-attribute object extraction system AMBER, which deals with both result and detail pages, achieves very high accuracy (>96%) with zero site-specific supervision, and is able to solve practical issues that arise in real-life data extraction tasks. AMBER is also applied as an important component of DIADEM, the first automatic full-site extraction system that is able to extract structured data from different domains without site-specific supervision, and has been tested through a large-scale evaluation (>10, 000) sites. On the result page side, AMBER achieves high accuracy through a novel domain- aware, path-based template discovery algorithm, and integrates annotations for all parts of the extraction, from identifying the primary list of objects, over segment- ing the individual objects, to aligning the attributes. Yet, AMBER is able to tolerate significant noise in the annotations, by combining these annotations with a novel algorithm for finding regular structures based on XPATH expressions that capture regular tree structures. On the detail page side, AMBER integrates boilerplate removal, dynamic lists identification and page dissimilarity calculation seamlessly to identify data region, then employs a set of fairly simple and cheaply computable features for attribute extraction. Besides, AMBER is the first approach that combines result page extraction and detail page extraction by integrating attributes extracted from result pages and the attributes found on corresponding detail pages. AMBER is able to identify attributes of objects with near perfect accuracy and to extract dozens of attributes with > 96% across several domains, even in presence of significant noise. It outperforms uninformed, automated approaches by a wide margin if given an ontology. Even in absence of an ontology, AMBER outperforms most previous systems on record segmentation.
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Labra, Videla Consuelo Andrea, and Fernández Carolina Ramírez. "Contrato temporal y fuero maternal — conflicto jurídico entre ambas instituciones." Tesis, Universidad de Chile, 2008. http://www.repositorio.uchile.cl/handle/2250/106890.
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Memoria (licenciado en ciencias jurídicas y sociales)El objeto de la presente Memoria es abordar el conflicto jurídico que se origina a partir de la coexistencia de dos instituciones en el Derecho del Trabajo; por una parte el contrato temporal de trabajo, que contempla las modalidades de contrato a plazo fijo y por terminación de obra o faena que tienen una duración limitada en el tiempo, sea por un plazo prefijado o implícito respectivamente, diferenciándose así de la regla general dada por la contratación laboral indefinida, y, por otra parte el fuero laboral maternal, instituto que cuenta con una larga trayectoria de reconocimiento en la legislación, y que a grandes rasgos otorga una inamovilidad temporal en el trabajo a sus beneficiarias y beneficiarios. Ambas instituciones tienen vigencia en nuestra legislación nacional, así como también se encuentran latamente reconocidas por el derecho internacional y la doctrina. Sin embargo, la aplicación conjunta de ambas instituciones a un caso específico, genera conflictos prácticos y jurídicos que intentaremos dilucidar a través del presente estudio. En Chile, la incompatibilidad entre la posibilidad que otorga nuestra legislación laboral en atención a permitir la celebración de contratos temporales y por otro lado la institución del fuero laboral, también reconocida en nuestro Derecho Laboral se resuelve por medio de una norma de rango legal a favor de la preeminencia del contrato temporal. En efecto, y según lo consagra el artículo 174 del Código del Trabajo, una persona beneficiada por el fuero laboral puede ser despedida en virtud del término del contrato a plazo fijo o culminación de obra o faena, previa autorización judicial
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YOUNES, ISABELLE. "Une nouvelle technique de radiographie thoracique : le systeme amber (advanced multiple beam equalization radiography) : comparaison avec la radiologie conventionnelle ; etude prospective de 322 cas." Toulouse 3, 1990. http://www.theses.fr/1990TOU31556.
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Perier, Valérie. "Les matières odorantes animales : la civette, l'ambre gris : mise au point de procédés d'accélération de vieillissement des teintures animales." Aix-Marseille 3, 1996. http://www.theses.fr/1996AIX30003.
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Parmi les matieres odorantes animales essentielles dans le clavier des senteurs des parfumeurs, la civette (secretion) et l'ambregris occupent une place de choix. Ces matieres premieres sont utilisees sous forme de teintures alcooliques et font l'objet d'une longue maturation (un ou deux ans) avant leur utilisation dans les parfums. Cette longue periode d'attente entraine un surcout financier important, d'autant plus que le cout d'achat de ces matieres premieres est tres eleve. Pour remedier a ce probleme, plusieurs procedes sont mis en place au cours de ce travail, en vue d'accelerer le vieillissement de ces teintures animales. Les effets de la temperature, de l'agitation, des rayonnements de la lumiere, et de l'air utilises dans certaines conditions decrites dans cette etude, ont permis d'atteindre, au niveau du laboratoire, des teintures de qualite olfactive optimale des 6 mois de traitement pour la civette et 5 mois pour l'ambregris. De plus, l'etude d'identification des constituants chimiques des extraits de civette civettictis civetta (hydrocarbures, indole, molecules macrocycliques, acides gras, sterols. . . ), nous a permis d'etablir une composition chimique moyenne, aussi bien sur les echantillons preleves sur l'animal que sur les qualites commerciales
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Valdevino, Pedro Miguel dos Santos. "Optimização de uma aplicação paralela para simulações de dinâmica molecular." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6256.
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Dissertação para obtenção do Grau de Mestre em
Engenharia InformáticaHoje em dia é possível encontrar pacotes de software em código aberto para resolução de problemas computacionalmente exigentes (HPC) que podem ser instalados com alguma simplicidade, até por utilizadores não-informáticos. Os desenvolvedores desses pacotes privilegiam,como seria de esperar, a portabilidade do seu software em detrimento de aspectos tais como "ter uma interface utilizador muito cuidada" ou "obter o máximo desempenho". É neste último aspecto que focamos a nossa atenção: propomo-nos desenvolver uma metodologia simples que permita obter ganhos de desempenho satisfatórios em aplicações para as quais o código fonte está disponível, mas é de grande complexidade, não está documentado, não sendo, por isso, possível e/ou desejável modi cá-lo. O presente trabalho é o primeiro passo para veri car a viabilidade de tal propósito; exploram-se as possibilidades de optimização em três dimensões: arquitectura computacional,rede de interligação e software. Como \Caso de Estudo" aplicacional adopta-se o AMBER, um pacote de aplicações de Dinâmica Molecular, não deixando contudo de ensaiar uma outra aplicação similar, o NAMD. Exploram-se as três arquitecturas computacionais representativas do estado-da-arte dos sistemas ao alcance de uma pequena/média instituição de C&T: um cluster, um servidor cc-NUMA e, apenas para uma rápida comparação com as restantes, uma plataforma GPGPU.
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Merabti, Karim. "Yellow Fluorescent Protein : étude du π stacking : élaboration d'un modèle du déclin de fluorescence." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS264/document.
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Le cadre général de cette thèse est une étude théorique par chimie quantique et dynamique moléculaire de la relation entre la structure et la fluorescence des protéines fluorescentes, en particulier, de la protéine fluorescente jaune (YFP). Dans cette protéine l'énergie de transition électronique est réduite par rapport à celle de la protéine fluorescente verte (GFP) en raison de l'empilement π entre le chromophore (la partie qui peut absorber et émetre de la lumiere visible au cœur de la protéine) et une tyrosine. Cet effet constitue la base de son utilité au laboratoire (transfert d'énergie par résonance «FRET» avec d’autres protéines). Ce travail comporte deux parties. D’une part, nous avons cherché à déterminer si un champ de force classique (ff99 de la suite AMBER) permet de représenter l’effet de π -stacking sur la dynamique à l’état excité. Pour cela nous avons effectué une série de calculs CASPT2 sur une grille de points. La conclusion est que la différence entre les surfaces d’énergie d’interaction résultant du champ de force et des calculs de chimie quantique CASPT2 ne semblent pas déterminante pour les propriétés de fluorescences.D’autre part, nous avons utilisé un modèle développé dans le groupe ThéoSim pour décrire le déclin à partir d’une série de dynamique (300ns) utilisant un champ de force classique. Cette méthode conduit à déterminer des paramètres en principe transférables d’une protéine fluorescente à une autre. Nous avons comparé la GFP et l’YFP. Cette approche ouvre la voie à une méthode rapide pour des propriétés de fluorescences pour de nouvelles protéines fluorescentes. Une prochaine étape serait d'améliorée la description du déclin radiatif utilisée dans ce modèleThe general framework of this PhD is a theoretical study by quantum chemistry and molecular dynamics of the relationship between the structure and the fluorescence properties of fluorescent proteins, particulary, of the yellow fluorescent protein (YFP). In this protein, the electron transition energy is reduced with respect to that of the green fluorescent protein (GFP) as a result of a π stacking between the chromophore (the part that absorbs and emits visible light in the protein) and a tyrosine . This effect is the basis of the usefulness of YFP in the laboratory (resonance energy transfer "FRET" with other proteins).This study has two parts. First, we have tried to determine if a classical force field (ff99 of the AMBER suite) can represent the effect of π stacking on the dynamics in the excited state. For this goal, we performed a series of CASPT2 calculations on a grid of points. The conclusion is that the difference between the interaction energy surfaces resulting from the force field and the CASPT2 calculations does not seem decisive for the fluorescence properties. Second, we used a model developed in the ThéoSim group to extract the fluorescence decay time from a series of dynamics (300ns) using a classical force field. This method leads to the determination of parameters in principle transferable across fluorescent protein. We compared GFP and YFP. This approach opens the way to a fast method for determining fluorescence properties for new fluorescent proteins. A next step would be to improve the description of radiative decay used in this model
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Bruvoll, Kjersti. "Fra Sponsa Christitil krıstz ambatt : Kontinuitet og endring i gammelislandskeoversett elser av latinske jomfrumartyrlegender." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for nordistikk og litteraturvitenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11182.
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Amberg, Romina [Verfasser]. "Influence of physical cues from the degrading magnesium implants on human cells / Romina Amberg." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2021. http://d-nb.info/1228859485/34.
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Gerrits, Michael. "Funktion und Effizienz von amber-Suppressor-tRNAs in der zellfreien Proteinbiosynthese." [S.l.] : [s.n.], 2001. http://www.diss.fu-berlin.de/2002/4/index.html.
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Lawson, Sarah, and Stacy Brown. "Stability of Oral Vitamin K Solutions Stored in Amber Plastic Syringes." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/asrf/2018/schedule/102.
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Oral vitamin K is administered to patients who have very high INR lab values and are on warfarin therapy. Due to the inability of some patients to swallow tablets, and the commercial formulation of vitamin K being available only as a tablet or an injectable emulsion, it may be necessary to compound an oral liquid formulation. When compounding batches of oral solutions, it is sometimes convenient to measure the product in unit doses. In this project, we compared liquid vitamin K in sterile water (1mg/mL) verses liquid vitamin K in Ora-Sweet (1mg/mL) stored in amber plastic syringes. Vitamin K is light sensitive and is best stored in amber containers. Vitamin K is also lipophilic and may adsorb to the plastic syringes. In this study, we investigated the feasibility of bulk compounding oral vitamin K solutions, and aliquoting them for storage in amber plastic syringes. The Vitamin K in sterile water syringes were made by mixing 45 mL of sterile water and 5 ampules, each containing 10mg/mL of vitamin K emulsion, together in an amber glass bottle for a final concentration of 1mg/mL. Thirty 1mL plastic amber syringes were filled with the mixture, capped, and placed in the refrigerator. The same process was repeated using Ora-Sweet instead of sterile water to fill thirty more plastic amber syringes. Three syringes of vitamin K in sterile water mixture, three syringes of vitamin K in Ora-Sweet mixture, and one Vitamin K reference standard were all analyzed using HPLC-UV on the day of compounding, and at day 1, 2, 4, 7, 14, 21, 30, 60, and 90. If stability is defined as 90-110% active ingredient, then Vitamin K in sterile water is stable to fourteen days, 95.3±3.5% recovery, but some samples fell below 90% recovery after 14 days. By day ninety, the recovery in SWFI syringes was 84.2±8.9%. For vitamin K in Ora-Sweet, the within-day variability was very high due to limitations in drug dissolution; as such the average concentration was not consistently above 90%. On the day of compounding, the percent recovery in the Ora-Sweet syringes was 92.7±9.9%, despite 1 hour of stirring. In conclusion, the Vitamin K in sterile water mixture can be stored in refrigerated, amber oral plastic syringes for 14 days, but plastic amber syringes were not appropriate for storage of the Vitamin K in Ora-Sweet mixture.
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Perrichot, Vincent. "Environnements paraliques à ambre et à végétaux du Crétacé nord-aquitain (Charents, sud-ouest de la France) /." Rennes, France : Université de Rennes I, Campus de Beaulieu, 2005. http://www.geosciences.univ-rennes1.fr/biblio/edition/MGR-Perrichot.htm.
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Decouvette, Esteban Alejandro. "Estudio hidrológico en cuencas de los departamentos Ambato y Pomán en la provincia de Catamarca." Bachelor's thesis, Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales, 2015. http://hdl.handle.net/11086/2183.
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Práctica Supervisada (IC)--FCEFN-UNC, 2015Describe en detalle el análisis de la información antecedente recopilada como así también la modelación hidrológica de los ríos de las localidades de el Rodeo-Dpto. Ambato-, Siján y Saujil-Dpto. Pomán- de la Provincia de Catamarca, validada a través de una regionalización de caudales previa, con el fin de determinar los caudales de diseño para distintos tiempos de retorno.
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Verkooijen, Katharine Mary. "Tears of the sun : Bronze Age amber spacers from Britain and Europe." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/15028.
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The amber spacers from Bronze Age Britain and Europe are one of the most well known artefact groups from this time period. Yet despite the frequency with which these artefacts are cited, the details of these finds both individually and within their original excavation contexts appear to be poorly understood. Recent new finds of ‘sets’ of spacers prompted this review and updating of the amber spacer corpus, which now extends to 375 individual spacers from 141 findspots. Once thought to constitute an artefact horizon which could provide a chronological bridge between the regions of Northwest Europe and Britain / the Central European Únĕtice/Tumulus Cultures and Late Helladic I and II Mycenaean Greece, new radiocarbon dating programs have extended their date range from (potentially) c. 2000 cal B.C. to c.1360 cal. B.C., although the regional chronologies remain essentially unresolved. To give a clear survey of how the spacers have been viewed historically, the catalogue entry for each findspot/spacer includes, as well as information about the findspots themselves, x-rays, photographs and drawings produced for this research, alongside all the previously published quotes and illustrations. Microscopic analyses provide evidence for some spacer-sets having been fragmented and deposited separately. Maps showing illustrations of the spacers where they were recovered allow comparison of regional similarities and differences. Loose colour plates show the x-rays of groups of spacers which have been correlated in past interpretations at 1:1 scale for easy comparison. Some earlier interpretations, including the Crescentic/Pendant regional division, the jet spacer/amber spacer/lunulae discrete distribution pattern and the close relationship of the Basic Pattern spacers, are challenged and found to no longer be sustainable. The craft and production aspects of spacer manufacture, particularly the procurement of suitable raw material, are addressed and a new narrative is presented, which is partly informed by the experimental replica research.
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Hacquart, Jeremie. "Internal charging modelling of the AMBER instrument on-board Jason-3 spacecraft." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278508.
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Internal charging is the accumulation of charged particles inside a material. Thisbuild up represents a serious hazard to satellites and instruments exposed to thespace environment. The Van Allen radiation belts constitute one of the worst spaceenvironments for satellites orbiting the earth. The energy of the electrons is higherthan in any earth orbit. Previous studies have noted the risk of internal charging in alow earth orbit or in geostationary orbit.The internal charging analysis of the AMBER instrument has been performed in amedium earth orbit. To run a relevant internal charging study, a whole dedicatedmodelling chain has been conducted. The instrument has been modelled with thecomputer-aided design software EDGE. The radiation transport analysis has beenperformed with the ESA/GRAS Monte Carlo-based software. The proper internalcharging analysis has been performed with the SPIS-IC software.Depending on various factors such as materials and shielding, the AMBER instrumentpresents few risks of electrostatic discharge. A wrong use of material can represent ahuge hazard in terms of internal charging. A thick shielding can lead to a higher riskof accumulation of charges due to a lower radiation induced conductivity.Intern uppladdning är en ansamling av laddade partiklar inuti ett material. Denutgör en allvarlig fara för satelliter och instrument som exponeras för rymdmiljön.Strålningsbältena utgör en av de värsta rymdmiljöerna för satelliter som kretsarrunt jorden i detta avseende, pga de höga elektronenergierna. Tidigare studierhar visat på risken för intern uppladdning i låg omloppsbana runt jorden eller ien geostationär bana. Analysen av intern uppladdning av AMBER-instrumentethar här utförts för en medelhög omloppsbana. För att utföra en relevant studiehar en hel särskild modellkedja genomförts. Instrumentet har modellerats medden datorstödda designen EDGE. Strålningsanalysen har utförts med programvaranESA/GRAS MonteCarlo-baserade metod. En korrekt intern laddningsanalys harutförts med SPIS-IC-programvaran. Pga olika faktorer som material och skärmninghos AMBER-instrumentet är risken för elektrostatisk urladdning låg. En felaktiganvändning av material kan dock utgöra en stor fara när det gäller intern laddning. Entjock avskärmning kan leda till en högre risk för ackumulering av laddning på grundav en lägre strålningsinducerad ledningsförmåga.
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Nilsson, Emelie. "DMA Controller for LEON3 SoC:s Using AMBA." Thesis, Linköpings universitet, Datorteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-93687.
Full textAbstract:
A DMA Controller can offload a processor tremendously. A memory copy operation can be initiated by the processor and while the processor executes others tasks the memory copy can be fulfilled by the DMA Controller. An implementation of a DMA Controller for use in LEON3 SoC:s has been made during this master thesis. Problems that occurred while designing a controller of this type concerned AMBA buses, data transfers, alignment and interrupt handling. The DMA Controller supports AMBA and is attached to an AHB master and APB slave. The DMA Controller supports burst transfers to maximize data bandwidth. The source and destination address can be arbitrarily aligned. It supports multiple channels and it has interrupt generation on transfer completion along with interrupt masking. The implemented functionality works as intended.
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Stötzel, Martin [Verfasser], and Michael [Akademischer Betreuer] Amberg. "The Crowd and the Chiefs. Two Perspectives for Organizing Open Innovation / Martin Stötzel. Gutachter: Michael Amberg." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2014. http://d-nb.info/1075664578/34.
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