973 resultados para Paul Otlet
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Applying ecological studies to the adaptations of prehistoric human hunter-gatherer groups has greatly increased our abilities to interpret effects of an ever-changing environment and our access to critical resources on these populations. The Pleistocene/Holocene transition, its climate and human genesis in the new world, draws intensive interest from a number of scientific communities. In Twilight of the Mammoths, Paul Martin adds his views, which are of no surprise, on the megafaunal extirpations during a cultural period referred to in North America as Clovis.
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This edited collection grew out of a symposium held at Utah State University in Logan in 2002. According to the editors, the symposium's purpose was to "publicly explore the particular ways environmental writing educates the public through a fusion of science and literary expression." The Search for a Common Language achieves that purpose by including short prose pieces-ranging from memoirs, essays on specific locations, and scientific papers - as well as poetry on natural themes. The range of topics and genres and the inclusion of poetry provide a variety of ways to talk about the environment and reach out to different audiences to educate them about the natural world.
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This brief book is a history of the Lubbock Lake Landmark site, a nationally recognized archeological site located on the Texas southern High Plains on the north side of the city of Lubbock. The location has been the subject of intense investigations by archaeologists since 1939. Paul H. Carlson, a noted author and professor of history at Texas Tech University, states that his purpose was to go back through what John McPhee called "deep time" to show how the Lubbock Lake location was formed and was used by humans through time. He accomplishes this in five chapters.
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The significance of the works by Venezuelan-born composer Paul Desenne lies in his unique compositional style that incorporates elements of Latin American folk, pop, and traditional music within the framework of the Western European tradition. His works, though easily classified as art music, nevertheless gain much of their emotional and referential meaning through this rich borrowing. This document focuses on three of Desenne’s flute pieces: the Solo Flute Sonata (2001), Gurrufío for flute orchestra (1997), and Guasa Macabra for flute and clarinet (2003). It provides an analysis of the three works, examining formal, structural, motivic, and rhythmic aspects. Scores and interviews with the composer have been employed as primary sources. Bibliographical material closely related to his music and other secondary sources support this analytical approach. This document also provides an introduction and stylistic discussion of Desenne’s other pieces that incorporate the flute. Chapter one consists of an introduction to Desenne’s life and general considerations of his musical style. Each of the following three chapters focuses on one the three aforementioned flute works, including information about the composition and premiere of each piece as well as analysis and an examination of its incorporation of traditional folk elements. The final chapter presents an introduction to and stylistic discussion of the other flute pieces by this composer. This study intends to provide a basic understanding of Desenne’s flute music, including general characteristics of his musical style, paving the way for further investigation of Desenne’s music, and flute music in particular.
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Temporal, spatial and diel variation in the distribution and abundance of organisms is an inherent property of ecological systems. The present study describes these variations and the composition of decapod larvae from the surface waters of St Paul`s Rocks. The expeditions to the archipelago were carried out in April, August and November 2003, March 2004 and May 2005. Surface plankton samples were collected during the morning and dusk periods, inside the inlet and in increasing distances around the archipelago (similar to 150, 700 and 1500 m). The identification resulted in 51 taxa. Seven species, six genera and larvae of the families Pandalidae and Portunidae were identified for the first time in the area. The mean larval density varied from zero to 150.2 +/- 69.6 individuals 100 m(-3) in the waters surrounding the archipelago and from 1.7 +/- 3.0 to 12,827 +/- 15,073 individuals 100 m(-3) inside the inlet. Significant differences on larval density were verified between months and period of the day, but not among the three sites around the archipelago. Cluster and non-metric multidimensional scaling analysis indicated that the decapod larvae community was divided into benthic and pelagic assemblages. Indicator species analysis (ISA) showed that six Brachyura taxa were good indicators for the inlet, while three sergestids were the main species from the waters around the archipelago. These results suggest that St Paul`s Rocks can be divided into two habitats, based on larval composition, density and diversity values: the inlet and the waters surrounding the archipelago.
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Among the marine invertebrate groups recorded from oceanic islands, bryozoans stand out because they can live and reproduce in suboptimal habitats, which may enhance their dispersal capabilities. This study aimed to update the checklist of bryozoans known from the Saint Peter and Saint Paul Archipelago (ASPSP) and discusses their distribution. During the five expeditions conducted between 2007 and 2009, 22 species were found, of which 16 were new occurrences for the archipelago. The bryozoans were collected from different biotic (algae and invertebrates) and abiotic (rocks, rubble and wrecks) substrata. The bryozoan community in ASPSP includes: eight new and probably endemic species, five species that belong to widespread species complexes, three species known only from the Brazilian coast, two species reported from the Western Atlantic and one species recorded from oceanic islets in the Atlantic. Additionally, three species are widespread in tropical to subtropical waters. Margaretta buski can be highlighted as the most conspicuous and abundant species between 1045 m deep and acts as an "ecosystem engineer".
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Mit dem vorliegenden Buch verfolgt der Autor vor allem drei Ziele: Das erste besteht darin, die anthropologischen Überlegungen, die sich in konzentrierter Form vor allem in den frühen Hauptwerken von Martin Heidegger und Jean-Paul Sartre finden, herauszulösen, zu systematisieren und zu einem einheitlichen anthropologischen Gedankengefüge zu vernetzen. In einem zweiten Schritt soll dieses Gefüge durch eigene Überlegungen ergänzt und in Auseinandersetzung mit Helmuth Plessner und Karl Jaspers weiterentwickelt werden. Drittens schließlich sollen vor diesem Hintergrund Grundlagen einer »strukturhermeneutischen Anthropologie« ausgearbeitet werden, die ein hermeneutisches Instrumentarium für die Aufklärung der unbedingten persönlichen Geltung kultureller Bindung bereitstellen können und von eigenen identitätstheoretischen Grundüberlegungen getragen werden. Da im fokussierten Zusammenhang kultureller Bindung und interkultureller Auseinandersetzung die Fragen nach dem menschlichen Selbstverhältnis und den Möglichkeiten sowie Bedingungen des Fremdverstehens eine wichtige Rolle spielen, sollen dabei nicht nur die hermeneutischen Aspekte der erörterten anthropologischen Positionen in den Blick genommen werden, sondern auch die damit unmittelbar verknüpften Fragen der Sinn- und Identitätsbildung. In kulturphilosophischer Hinsicht soll ein zentrales Ergebnis der Arbeit sein, anthropologische Eckpunkte menschlichen Entwerfens und Mechanismen der kulturellen Sinn- und Identitätsstiftung herauszuarbeiten, um der Analyse kultureller Bindung sowohl ein anthropologisches als auch ein hermeneutisches Fundament zu geben.
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Questa ricerca ha l’obiettivo di dare nuovi contributi alla conoscenza della pittura di paesaggio francese nell’Ottocento attraverso lo studio dell’opera di Paul Flandrin (1811-1902). Flandrin si colloca al crocevia di esperienze fondamentali nella ricerca artistica di metà Ottocento: l’eredità di Camille Corot, l’insegnamento di Jean-Auguste Dominique Ingres, la pratica del lavoro en plein air, la tradizione del paesaggio neoclassico. Il corpus di opere del pittore lionese Paul Flandrin (1811-1902) ricostruito in questa tesi è frutto di una sistematica operazione di ricerca sul campo e viene in seguito analizzato alla luce dei recenti studi sulla pittura di paesaggio neoclassico in Francia nel XIX secolo. La ricerca si fonda su una grande quantità di materiale inedito: dipinti, disegni, taccuini di studio en plein air, corrispondenza con colleghi e amici. Da questa ricerca la fisionomia artistica di Paul Flandrin emerge ben individuata singolarmente e al tempo stesso ancorata al contesto storico-artistico attraverso le relazioni con i colleghi, l’utilizzo di determinate tecniche, la frequentazione di mete comuni ai paesaggisti suoi contemporanei, la decisa presa di posizione a favore del paesaggio neoclassico.
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In questa tesi ho voluto descrivere il Timing Attack al sistema crittografico RSA, il suo funzionamento, la teoria su cui si basa, i suoi punti di forza e i punti deboli. Questo particolare tipo di attacco informatico fu presentato per la prima volta da Paul C. Kocher nel 1996 all’“RSA Data Security and CRYPTO conferences”. Nel suo articolo “Timing Attacks on Implementations of Diffie-Hellman, RSA, DSS, and Other Systems” l’autore svela una nuova possibile falla nel sistema RSA, che non dipende da debolezze del crittosistema puramente matematiche, ma da un aspetto su cui nessuno prima di allora si era mai soffermato: il tempo di esecuzione delle operazioni crittografiche. Il concetto è tanto semplice quanto geniale: ogni operazione in un computer ha una certa durata. Le variazioni dei tempi impiegati per svolgere le operazioni dal computer infatti, necessariamente dipendono dal tipo di algoritmo e quindi dalle chiavi private e dal particolare input che si è fornito. In questo modo, misurando le variazioni di tempo e usando solamente strumenti statistici, Kocher mostra che è possibile ottenere informazioni sull’implementazione del crittosistema e quindi forzare RSA e altri sistemi di sicurezza, senza neppure andare a toccare l’aspetto matematico dell’algoritmo. Di centrale importanza per questa teoria diventa quindi la statistica. Questo perché entrano in gioco molte variabili che possono influire sul tempo di calcolo nella fase di decifrazione: - La progettazione del sistema crittografico - Quanto impiega la CPU ad eseguire il processo - L’algoritmo utilizzato e il tipo di implementazione - La precisione delle misurazioni - Ecc. Per avere più possibilità di successo nell’attaccare il sistema occorre quindi fare prove ripetute utilizzando la stessa chiave e input differenti per effettuare analisi di correlazione statistica delle informazioni di temporizzazione, fino al punto di recuperare completamente la chiave privata. Ecco cosa asserisce Kocher: “Against a vulnerable system, the attack is computationally inexpensive and often requires only known ciphertext.”, cioè, contro sistemi vulnerabili, l’attacco è computazionalmente poco costoso e spesso richiede solo di conoscere testi cifrati e di ottenere i tempi necessari per la loro decifrazione.
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This research aims to identify the guidelines that are opposed to Judaism in the body of the work Dialogue with Trypho of Justin Martyr, using the methodology engendered by Norbert Elias and John L. Scotson in their work, The Established and the Outsiders. As a result, our research intends to contribute to unveil another aspect of Justin’s work, considered by many scholars as a proselytistic tool; by taking it as a document builder of the Christian identity trough its dissociation from Judaism. For this reason, this thesis investigates and reviews the socio-cultural and political environment that gave rise to Roman Christianity, taking into consideration Christian internal conflicts and the resulting dichotomies within the Roman Christian community, as a result of its departure from its Jewish matrix.
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* naissance 18.6.1876 à Zofingue,décès 15.10.1960 à Zofingue, prot., de Zofingue. Fils de Johann Franz Emil, imprimeur, et d'Elisabeth Caroline Steiner. ∞ 1) Ida Brack, 2) Emmy Mathys. Apprentissage d'imprimeur. R. reprit la petite entreprise de son père en 1898. Il en fit la principale imprimerie et maison d'édition de Suisse en adoptant et développant le procédé de l'héliogravure. R. édita de nombreuses revues et journaux, dont la Schweizer Illustrierte Zeitung dès 1911 (Schweizer Illustrierte depuis 1965), L'Illustré à partir de 1921 et le Blick dès 1959. Bibliographie – B. Meier, T. Häussler, Zwischen Masse, Markt und Macht, 2009