Proefschrift Universiteit van Amsterdam. / Met lit. opg. - Met samenvatting in het Nederlands.

Proefschrift Universiteit van Amsterdam. / Met een samenvatting in het Nederlands.

Proefschrift Universiteit van Amsterdam. / Met een samenvatting in het Nederlands.

Proefschrift Universiteit van Amsterdam. / Met bibliogr., lit. opg. - Met samenvatting in het Nederlands.

Proefschrift Maastricht. / Met lit. opg. - Met een samenvatting in het Nederlands.

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Submitted by Gesiel Vilarubia Pereira (35345734801) on 2017-08-23T13:24:32Z No. of bitstreams: 1 Dissertação - Gesiel Vilarubia Pereira.pdf: 134882582 bytes, checksum: 1b452379542030a7180799844b4e877a (MD5) / Approved for entry into archive by Monique Sasaki (sayumi_sasaki@hotmail.com) on 2017-08-23T18:10:15Z (GMT) No. of bitstreams: 1 pereira_gv_me_ia.pdf: 134882582 bytes, checksum: 1b452379542030a7180799844b4e877a (MD5) / Made available in DSpace on 2017-08-23T18:10:15Z (GMT). No. of bitstreams: 1 pereira_gv_me_ia.pdf: 134882582 bytes, checksum: 1b452379542030a7180799844b4e877a (MD5) Previous issue date: 2017-06-30 / Tendo como objeto de estudo os 50 Ponteios para piano de Camargo Guarnieri, este trabalho se concentra na análise de suas estruturações melódicas e harmônicas, almejando compreender aspectos estruturais da poética do compositor neste ciclo de peças. Apresenta-se, inicialmente, um diálogo entre as transformações sofridas pela escritura melódico-harmônica de Guarnieri durante o período de composição desta coleção e uma contextualização histórico-estilística, na qual são focalizadas, principalmente, suas buscas por um nacionalismo influenciado por Mário de Andrade e suas experiências com diferentes idiomas harmônicos. Propõe-se, ainda como texto preparatório para as análises, uma classificação textural dos 50 Ponteios e, ainda, a verificação de algumas constâncias formais dentro desta coleção. Nos capítulos seguintes, esta dissertação se direciona para a verificação das escolhas dos materiais presentes na construção das melodias e harmonias e se estende sobre observação dos procedimentos composicionais característicos de Guarnieri – sua poética. A partir desta investigação analítica, constatamos, nos Ponteios e em outras obras do compositor, a recorrência de um motivo melódico o qual denominamos Motivo Guarnieri. Na dimensão harmônica, chamou-nos a atenção a reincidência de uma determinada estrutura harmônica simétrica, utilizada com função Dominante nos momentos cadenciais, além do cuidado, por parte do compositor, em usar estruturas simétricas nos contextos escalares, harmônicos e formais. Sempre que possível, as análises foram permeadas por diálogos estabelecidos com pesquisadores da obra de Guarnieri e pela observação das relações entre suas decisões composicionais e seu posicionamento estético, diretamente influenciado pelo livro Ensaio sobre a música brasileira, de Mário de Andrade. / The aim of this work is to study the 50 Piano Ponteios of Camargo Guarnieri, focusing on the analysis of their melodic and harmonic structures, seeking to understand the structural aspects of the composer's poetics in this cycle of pieces. We initially examine the transformations incurred by Guarnieri's melodic-harmonic writing in the period that this collection was composed, and a produce a historical-stylistic contextualization. This contextualization focuses on the Brazilan nationalism which was influenced by Brazilian philosopher and critic Mário de Andrade, and Guarnieri’s experiences with different harmonic languages. In preparation for the analysis, a textural classification of the 50 Ponteios is performed, as well as a verification of some formal consistencies within this collection. The dissertation is also directed to the examination of the choices of the materials present in the construction of the melodies and harmonies, and extends to the observation of the compositional procedures characteristic of Guarnieri – in other words, his poetics. From this analytical investigation we can observe, in the Ponteios and in other works by this composer, the recurrence of a melodic motif which we call The Guarnieri Motive. In terms of harmony, we are struck by the recurrence of a specific symmetrical harmonic structure, used as dominant function in cadential moments. We may also verify the care the composer took to use symmetrical structures in scalar, harmonic and formal contexts. Whenever possible, the analysis was permeated by dialogues established with researchers on Guarnieri’s work, and by the observation of the relationship between Guarnieri’s compositional decisions and his aesthetic opinion, as influenced directly by the book Ensaio sobre a música brasileira by Mário de Andrade.

Στόχος της παρούσας Διπλωματικής Εργασίας είναι ο σχεδιασμός και υλοποίηση ενός Κρυπτογραφικού Συστήματος με βάση τον Αλγόριθμο κατακερματισμού JH. Ο σχεδιασμός του κρυπτογραφικού αυτού συστήματος έγινε με τη χρήση γλώσσας VHDL (Very High Speed Integrated Circuits hardware description language) και στη συνέχεια η υλοποίηση αυτή έγινε πάνω σε πλατφόρμα FPGA (Field Programmable Gate Array). Ο αλγόριθμος JH είναι ένας αλγόριθμος κατακερματισμού (hash function) ο οποίος σχεδιάστηκε στα πλαίσια του διαγωνισμου κρυπτογραφιας NIST (National Institute of Standards and Technology). Η πρώτη του έκδοση έγινε στις 31 Οκτωβρίου 2008 ενώ η τελική του έκδοση έγινε στις 16 Ιανουαρίου 2011. Ο Αλγόριθμος JH έχει τρεις υποκατηγορίες. Υπάρχει ο JH-224, JH-256, JH-384 και ο JH-512. Βασικό χαρακτηριστικό του αλγορίθμου αυτού είναι το γεγονός πώς οι λειτουργίες που συμβαίνουν σε κάθε γύρο είναι ίδιες. Επίσης σημαντικό γνώρισμα ειναι η ασφάλεια που παρέχει ο αλγόριθμος αυτός καθώς ο μεγάλος αριθμός των ενεργών S-boxes που χρησιμοποιούνται και ταυτόχρονα το γεγονός ότι σε κάθε γύρο χρησιμοποιείται ένα διαφορετικό κλειδι το οποίο παράγεται εκεινη τη στιγμή και δεν ειναι αποθηκευμένο σε ένα σημείο, στο οποίο θα μπορούσε κάποιος να επέμβει, κάνει το σύστημά μας εξαιρετικά δυνατό και ανθεκτικό απέναντι σε επιθέσεις όπως είναι η διαφορική κρυπτανάλυση. Για την εξακρίβωση της ορθής λειτουργίας του συστήματος χρησιμοποιήθηκε μία υλοποίηση του Αλγορίθμου JH σε γλώσσα C. Χρησιμοποιώντας την υλοποίηση αυτή κάθε φορά που θέλουμε να κρυπτογραφήσουμε ένα μήνυμα το οποίο είναι μία σειρά από bit, λαμβάνουμε το κρυπτογραφημένο μήνυμα. Αυτο το κρυπτογραφημένο μήνυμα το συγκρίνουμε με αυτό που παίρνουμε στην έξοδο του συστήματος JH που σχεδιάσαμε και με αυτό το τρόπο επιβεβαιώνουμε την ορθότητα του αποτελέσματος. Ύστερα από την non-pipelined υλοποίηση του συστήματος αυτού, χρησιμοποιήθηκε η τεχνική της συσωλήνωσης (pipeline). Πιο συγκεκριμένα εγιναν 4 διαφορετικές pipelined υλοποιήσεις με 2,3,6 και 7 στάδια. Σκοπός είναι για κάθε μία pipelined υλοποίηση να γίνει έλεγχος σε θέματα απόδοσης, κατανάλωσης ισχύος καθώς επίσης και σε θέματα επιφάνειας. Στη συνέχεια γίνεται μία σύγκριση στα προαναφερθέντα θέματα μεταξύ των διαφορετικών pipelined υλοποιήσεων και με την non-pipelined υλοποίηση του κρυπτογραφικού συστήματος JH. Επίσης αξίζει να σημειωθεί πώς γίνεται ιδιαίτερη αναφορά στο throughput και στο throughput per area των pipelined υλοποιήσεων. Από τα πειραματικά αποτελέσματα που προέκυψαν η JH NON PIPELINED υλοποίηση έχει απόδοση 97 MHz με κατανάλωση ισχύος 137mW και συνολική επιφάνεια 2284 slices σε SPARTAN 3E FPGA συσκευή. Ενώ από την ανάλυση της JH NON PIPELINED υλοποίησης και των 4 pipelined υλοποιήσεων σε 4 διαφορετικά FPGA (2 της οικογένειας SPARTAN και 2 της οικογένειας VIRTEX) συμπεραίνουμε πώς στην οικογένεια VIRTEX η κατανάλωση ισχύος είναι πάντα μεγαλύτερη σε σχεση με την οικογένεια SPARTAN. / The purpose of this Thesis Project is the design and implementation of a Cryptographic System using the JH Hash Algorithm. The design of this Cryptographic System was performed using the VHDL language (Very High Speed Integrated Circuits hardware description language) and then this implementation was executed on a FPGA platform (Field Programmable Gate Array).The JH Algorithm is a hash algorithm that was developed during the NIST (National Institute of Standards and Technology) Cryptography Competition. Its first version was released on 31 October 2008 while its last version was released on 16 January 2011. The JH Hash Algorithm has three subcategories. There is JH-224, JH-256, JH-384, and JH-512. Basic characteristic of this Algorithm is the fact that the functions that are executed in each round are identical. Moreover important characteristic is the security that this Algorithm provides us while the big number of active S-Boxes that is used and in the same time the fact that in each round a different key is produced on the fly, and is not stored in a place that a third person could have access, makes our system really strong and resistant to attacks such as the differential attack. To confirm the right functionality of the system the implementation of the JH Algorithm in C Language is used. Using this implementation each time we want to cipher a message, which is a sequence of bits, we get the message digest. This message digest is compared with the message digest that we get from the JH system that we developed with VHDL and in this way we confirm the correctness of the result. After the non pipelined implementation of the JH system the pipeline technique was used. To be more specific 4 different pipelined implementations with 2, 3, 6 and 7 stages were performed. The target was to check the performance, area and power dissipation for each pipelined implementation. Next a comparison was performed between the various pipelined implementations and the non pipelined implementation for the above mentioned issues. In addition to this it is worth to mention that considerable reference is made for throughput and throughput per area for the pipelined implementations. According to the experimental results the JH NON PIPELINED implementation has a performance of 97 MHz, with power dissipation of 137mW and a total area of 2284 Slices on SPARTAN 3E FPGA device. From the JH NON PIPELINED implementation and the other 4 pipelined implementations on 4 different FPGA Devices (2 from the VIRTEX family and 2 from the SPARTAN family) we concluded that the power dissipation is bigger in VIRTEX family devices in comparison to SPARTAN family Devices.

<p>Oppgaven presenterer teknikker og implementasjon for sammenlikning av naboskap av proteiner i protein-protein interaksjons-nettverk.</p>

Kardiovaskulære endringer under dykking: Fra menneskelig respons til cellulær funksjon. Menneskekroppen er evolusjonsmessig tilpasset et liv på land, men etter at dykking med komprimert luft ble allment tilgjengelig så har mennesket kunnet utforske verdenshavene på en helt ny måte. Imidlertid må kroppen raskt tilpasse seg et økende trykk under nedstigning og for at lungene ikke skal kollapse må luft alltid tilføres under høyt trykk. Avhengig av dybde og tid vil kroppen ta opp en viss mengde gass og ved retur til overflaten kan overmetning av gass føre til dannelse av gassbobler og mulig trykkfallsyke. Samtidig vil det kardiovaskulære systemet bli utsatt for betydelige påkjenninger under de ulike fasene av et dykk, og hovedmålet med dette arbeidet har vært å evaluere om kunnskap fra dyrestudier kan bidra til økt forståelse av de fysiologiske endringer man finner hos mennesket og dermed minimalisere risikoen for skader forbundet med dykking. Denne avhandlingen er basert på tre studier hvor den første studien evaluerte hvilke effekter dyp luftdykking hadde på lunge og hjertefunksjon og varigheten av disse symptomene. Ved bruk av ultralyd ble det stadfestet at symptomer på interstitiell lunge ødem (ultralyd lungekometer (ULC)) forsvant etter 2-3 timer etter påfølgende dykk, og symptomer på nedsatt hjertefunksjon ble dokumentert etter hvert dykk. I dag blir slike målinger på menneske kun utført i forkant av- og etter dykking da det ikke finnes utstyr for å gjøre målinger under selve dykket. For å få økt forståelse av hvordan det kardiovaskulære systemet blir påvirket av dykking ved ulike tidspunkt og dermed en bedre forståelse av de endingene som er observert hos mennesket etter dykk, ble det andre studiet initiert. Her ble kardiovaskulære endringer hos anesteserte rotter kontinuerlig evaluert med et trykk volum kateter (PV-loop) i venstre ventrikkel og femoral arterien. Rottene ble utsatt for et simulert dykk i trykk-kammer og resultatene viste at de mest framtredende endringer fant sted under kompresjonsfasen og gradvis returnerte til utgangsverdier under dekompresjon og etter dykk. I tillegg undersøkte vi om en moderat nedkjøling under dekompresjonsfasen og oppvarming igjen etter dykk ville endre utfallet av dykket. Vi fant ingen økt risiko for trykkfallsyke, men observerte en overrakende nedgang i slagvolum og minuttvolum etter re-varming. I den tredje studien undersøkte vi om immersjon (nedsenking i vann) i kombinasjon med et simulert dykk kunne gi cellulære endringer i hjertet og dermed økt risiko for trykkfallsyke sammenliknet med hyperbart dykk uten immersjon (tørt dykk). Effekten av immersjon på det kardiovaskulære system ble funnet å vedvare over tid. De dyr som hadde oppholt seg i vann før det simulerte dykket fikk nedsatt hjertecelletfunksjon samt økt boblegrad sammenliknet med de dyr som ikke hadde vært nedsenket i vann. Hvorfor dykk i vann resulterer i økt risiko for trykkfallsyke enn dykk i tørre omgivelser er uklart, men det viser at man ikke bør direkte overføre prosedyrer fra tørre dykk til dykk i vann.