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1
Гаврілов, Владислав Сергійович. "Система прогнозування музичних композицій методами машинного навчання". Master's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/46611.
Testo completoAbstract (sommario):
Магістерська дисертація: 81 с., 35 рис., 20 табл., 1 дод., 10 джерел. .
Об’єкт дослідження – є створення комп’ютерного засобу, що дозволяє
автоматично генерувати реалістичні музичні композиції. В ході роботи було
проведено аналіз існуючих методів та підходів до рішення цієї задачі. З усіх
проаналізованих були обрані ті, що дають найбільш реалістичні результати та
можуть бути реалізовані з використанням доступних обчислювальних ресурсів.
Предмет дослідження – нейромережева система, що дозволяє генерувати
нову музику на основі поданих композицій, враховуючи тривалість звучання нот
та паузи між ними.
Мета роботи – генерувати мелодії певного жанру та стилю для подальшого
їх використання в любительских проектах, де розробники не мають можливості
чи фінансів для створення власних чи покупки існуючих
Для демонстрації було згенеровано декілька композицій. Вони дозволяють
оцінити переваги та недоліки використаного методу.
У ході роботи було проаналізовано існуючі рішення даної задачі, що дало
нам змогу обрати найкращий метод та спробувати вдосконалити його.Master’s thesis explanatory note: 81 p., 35 fig., 20 tables, 1 appendixes, 10 sources. The object of the research is to create a computer tool that allows you to automatically generate realistic music compositions. In the course of the work an analysis of existing methods and approaches to solve this problem was carried out. Out of all analyzed were selected the most realistic results and can be implemented using available computing resources. The subject of the research is a neural network system that allows to generate new music based on submitted compositions, taking into account the duration of the sound of the notes and the pauses between them. The purpose of the work is to generate tunes of a certain genre and style for further use in amateur projects, where developers do not have the ability or finances to create their own or buy existing ones. Several compositions were generated for demonstration purposes. They allow you to evaluate the advantages and disadvantages of the method used. In the course of the work, existing solutions to this problem were analyzed, which allowed us to choose the best method and try to improve it.
2
Saloski, Ensar. "Die Bewertung von Mini Futures". St. Gallen, 2008. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/03601747002/$FILE/03601747002.pdf.
Testo completo
3
Rosetti, Sofia. "Progettazione di un sistema per la modellazione di melodie musicali come reti complesse: conversione da formato MIDI a MusicXML". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11914/.
Testo completoAbstract (sommario):
Il progetto realizzato consiste in uno strumento software in grado di effettuare una conversione di file, dal formato MIDI al formato MusicXML. Il tool è il proseguimento di un’attività basata sull'analisi di reti complesse e sullo sviluppo di strumenti per la modellazione di spartiti musicali.
Melodie, assoli ed in generale tracce musicali sono rappresentabili come reti complesse, in cui i nodi identificano le note del brano e gli archi mostrano le sequenze con cui queste vengono suonate. Utilizzando la teoria delle reti è possibile estrarre alcune metriche principali che caratterizzano il brano in questione.
Per la generazione della rete si è fatto uso di spartiti musicali descritti tramite lo standard MusicXML. File in questo formato sono difficilmente reperibili, per cui lo strumento realizzato si propone di effettuare una conversione da formato MIDI a formato MusicXML, con l’obiettivo di ottenere un database più esteso.
Attraverso il tool sono stati convertiti brani di diverso genere, le cui reti relative sono state poi analizzate applicandovi le metriche principali ed effettuando le dovute valutazioni.
4
Dufreneix, Stéphane. "Etablissement de références dosimétriques dans les faisceaux de rayons X de hautes énergies et de très petites sections (< 1cm²) pour la radiothérapie". Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112416/document.
Testo completoAbstract (sommario):
En tant que laboratoire national pour la métrologie des rayonnements ionisants, le Laboratoire National Henri Becquerel met au point les méthodes de mesures absolues pour établir les références dosimétriques. Il dispose, entre autres, de références dans des faisceaux de rayons X utilisés en radiothérapie et ayant une taille de champ comprise entre 10 et 2 cm de côté. Afin de s’approcher des plus petits champs utilisés en clinique, la miniaturisation des détecteurs absolus n’étant pas possible, il est proposé dans cette thèse de remplacer la dose absorbée en un point par le produit dose surface (PDS). L’applicabilité du PDS mesuré à l’aide de dosimètres dont la surface sensible est plus grande que celle du champ de rayonnement a été vérifiée. Ainsi, un calorimètre graphite avec une surface sensible de 3 cm de diamètre a été conçu, construit et testé. En vue du transfert des références dosimétriques à l’utilisateur, une chambre d’ionisation de même diamètre a elle aussi été réalisée et testée. Son coefficient d’étalonnage en termes de PDS a été déterminé dans des faisceaux circulaires de 2, 1 et 0.75 cm de diamètre avec une incertitude type inférieure à 0.7 %. La distribution relative de la dose absorbée dans l’eau en deux dimensions a été mesurée au moyen d’un dosimètre diamant, d’une chambre d’ionisation PinPoint et de films gafchromiques, pour lesquels un protocole de lecture spécifique a été mis au point. Les résultats dans le faisceau de 2 cm de diamètre ont montré un bon accord entre les approches en termes de PDS et de dose absorbée dans l’eau en un point, après application des facteurs de correction obtenus au moyen de simulations Monte Carlo et des mesures de distribution de dose. Les coefficients d’étalonnage de la chambre d’ionisation de grandes dimensions établis dans les champs de 1 et 0.75 cm de diamètre sont compatibles aux incertitudes près mais s’écartent de -2.6 % de celui établi dans le champ de 2 cm de diamètre. L’utilisation du PDS nécessite donc une surface de détection notablement plus grande que la section du mini-FaisceauThe French primary standard dosimetry laboratory “Laboratoire National Henri Becquerel” is in charge of the establishment of dosimetric standards for ionizing radiation beams. Absolute dose measurements are thus available for X-Ray beams used in radiotherapy for field sizes between 10 and 2 cm. Since the miniaturization of absolute dosimeters is not possible for smaller field sizes, a dose area product (DAP) has been suggested as a substitute to the absorbed dose at a point.In order to measure a DAP with dosimeters which sensitive surface is larger than the beam, a graphite calorimeter with a sensitive surface of 3 cm diameter was designed, built and tested. An ionization chamber with the same diameter was realized and tested to transfer the dosimetric references to the end users. Its calibration factor in terms of DAP was determined in circular beams of 2, 1 and 0.75 cm diameter with an uncertainty smaller than 0.7 %. The two-Dimension relative dose distribution was measured thanks to a diamond dosimeter, a PinPoint ionization chamber and gafchromic films, using a specific protocol.Both approaches, respectively based on a PDS and an absorbed dose to water at a point, were in good agreement in the 2 cm beam. Correction factors determined from Monte Carlo simulations and measured dose distributions were needed for this comparison. The calibration factor of the large ionization chamber in the 1 and 0.75 cm diameter beams were in good agreement within the uncertainties but a gap of -2.6 % was found with the one established in the 2 cm diameter beam. As a result, the DAP can be used if the sensitive surface is much larger than the beam section
5
Ernst, Jacqueline. "Erfolgsfaktoren einer Revitalisierungsstrategie - untersucht am Fall des MINI". St. Gallen, 2005. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/02601748001/$FILE/02601748001.pdf.
Testo completo
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Karataş, Ömer Osman. "Projecting turkey’s power with the understanding of popular geopolitics". Master's thesis, Instituto Superior de Ciências Sociais e Políticas, 2016. http://hdl.handle.net/10400.5/12782.
Testo completoAbstract (sommario):
Dissertação de Mestrado em Estratégiaobjectivo desta tese é o de responder à seguinte questão: Como projecta a Turquia o seu poder através do conceito da “geopolitica popular”? Esta tese projecta esta questão nas ferramentas geopoliticas populares da Turquia. Examina até que ponto estas ferramentas são utilizadas para a prosperiadade deste país. Irei explorar esta fenómeno, através da analise de differentes fontes como: Canais de televisão turcos (TRT, Kanal D, Star TV and Fox TV), series de televisão turcos (Silver (Gumus), The Magnificent Century (Muhtesem Yuzyil), 1001 Nights (Binbir Gece) and Resurrection of Ertugrul (Dirilis Ertugrul), filmes turcos ((The Valley of the Wolfs – Iraq and Nuri Bilge Ceylan’s films) e cultura popular turca (musica e desporto). Serão analizados os seus efeitos e a maneira como contribuem para a geopolitica popular da Turquia.
This thesis aims to answer the following question: How does Turkey project its power through the concept of "popular geopolitics"? I project this question onto the tools of Turkey’s popular geopolitics. The thesis examines to which extent these tools are used for the prosperity of this country. Such is explored through an examination of different sources such as Turkish TV Channels (TRT, Kanal D, Star TV and Fox TV), Turkish TV series (Silver (Gumus), The Magnificent Century (Muhtesem Yuzyil), 1001 Nights (Binbir Gece) and Resurrection of Ertugrul (Dirilis Ertugrul), Turkish films (The Valley of the Wolfs – Iraq and Nuri Bilge Ceylan’s films) and popular culture elements (music & sports) of Turkey. Their effects and the ways in which they contribute to popular geopolitics of Turkey will be analyzed.
N/A
7
Menegazzo, Nicola. "A novel approach to diamondlike carbon based mid-infrared attenuated total reflectance spectroelectrochemistry". Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22616.
Testo completoAbstract (sommario):
Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2007.Committee Chair: Mizaikoff, Boris; Committee Member: Bottomley, Lawrence; Committee Member: Hunt, William; Committee Member: Janata, Jiri; Committee Member: Josowicz, Miroslawa.
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Martínez, García Javier. "Mid-infrared integrated photonic sensors of water and ice films for harsh environments". Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/435690.
Testo completoAbstract (sommario):
Quan una aeronau travessa núvols situats a mitja altitud que estan principalment compostos d'incomptables gotes d'aigua en subfusió, corre el risc d’engelament en les seves parts més exposades. Fins i tot una capa submilimètrica de gel formada sobre elements com ales, motors o tubs de pitot pot reduir dràsticament la seva sustentació i rendiment i, per tant, afectar a la seva eficiència i maniobrabilitat fins al punt de causar una pèrdua de control i posterior accident. Les tecnologies anti-gel instal·lades en aeronaus modernes busquen reduir aquest problema mitjançant sistemes que no solament fonguin el gel acumulat si no que ho detectin abans que resulti perillós. En aquesta Tesi es presenta un nou i ultrasensible, però a la vegada robust, sensor de gel basat en fotònica integrada d’IR-mitjà que pot ser muntat en qualsevol superfície sense pèrdua aerodinàmica. A partir de la detecció de canvis en les característiques de l'aigua a l’IR-mitjà que estan associats intrínsecament a variacions en la seva estructura molecular per a les seves diferents fases, es demostra la detecció de gel amb alta sensibilitat i rapidesa per aconseguir una alerta prematura d’engelament en vol. Al llarg d'aquesta Tesi, es tracta, des de les perspectives fonamental i aplicada, el desenvolupament complet del sensor abastant des de la concepció teòrica fins a la demonstració experimental del seu rendiment i fiabilitat en un túnel de vent. Finalment, es presenta un segon sensor amb millor sensibilitat a costa d'una menor robustesa per a la detecció de petits volums de contaminants químics en aigua. El sensor aprofita l'excitació d'un plasmó superficial a l’IR-mitjà que intensifica la interacció entre llum i anàlit al voltant de ressonàncies moleculars. Això emfatitza encara més els enormes beneficis que operar a l’IR-mitjà pot aportar a futurs sensors fotònics integrats.Al atravesar una aeronave nubes situadas a media altitud que están principalmente compuestas de incontables gotas de agua en subfusión, corre el riesgo de engelamiento en sus partes más expuestas. Incluso una capa submilimétrica de hielo formada sobre elementos como alas, motores o tubos de pitot puede reducir drásticamente su sustentación y rendimiento y, por tanto, afectar a su eficiencia y maniobrabilidad hasta el punto de causar una pérdida de control y posterior accidente. Las tecnologías anti-hielo instaladas en aeronaves modernas buscan reducir este problema mediante sistemas que no solo derritan el hielo acumulado si no que lo detecten antes de que resulte peligroso. En esta Tesis se presenta un nuevo y ultrasensible, pero a su vez robusto, sensor de hielo basado en fotónica integrada de IR-medio que puede ser montado en cualquier superficie sin apenas pérdida aerodinámica. A partir de la detección de cambios en los rasgos característicos del agua en el IR-medio que están asociados intrínsecamente a variaciones en su estructura molecular para sus diferentes fases, se demuestra la detección de hielo con alta sensibilidad y rapidez para conseguir una alerta temprana de engelamiento en vuelo. A lo largo de esta Tesis, se trata, desde las perspectivas fundamental y aplicada, el desarrollo completo del sensor abarcando desde la concepción teórica hasta la demonstración experimental de su rendimiento y fiabilidad en un túnel de viento. Por último, se presenta un segundo sensor con mejor sensibilidad a costa de una robustez reducida para la detección de pequeños volúmenes de contaminantes químicos en agua. El sensor aprovecha la excitación de un plasmón superficial en el IR-medio que intensifica la interacción entre luz y analito alrededor de resonancias moleculares. Esto enfatiza más si cabe los enormes beneficios que operar el IR-medio puede aportar a futuros sensores fotónicos integrados.
Al atravesar una aeronave nubes situadas a media altitud que están principalmente compuestas de incontables gotas de agua en subfusión, corre el riesgo de engelamiento en sus partes más expuestas. Incluso una capa submilimétrica de hielo formada sobre elementos como alas, motores o tubos de pitot puede reducir drásticamente su sustentación y rendimiento y, por tanto, afectar a su eficiencia y maniobrabilidad hasta el punto de causar una pérdida de control y posterior accidente. Las tecnologías anti-hielo instaladas en aeronaves modernas buscan reducir este problema mediante sistemas que no solo derritan el hielo acumulado si no que lo detecten antes de que resulte peligroso. En esta Tesis se presenta un nuevo y ultrasensible, pero a su vez robusto, sensor de hielo basado en fotónica integrada de IR-medio que puede ser montado en cualquier superficie sin apenas pérdida aerodinámica. A partir de la detección de cambios en los rasgos característicos del agua en el IR-medio que están asociados intrínsecamente a variaciones en su estructura molecular para sus diferentes fases, se demuestra la detección de hielo con alta sensibilidad y rapidez para conseguir una alerta temprana de engelamiento en vuelo. A lo largo de esta Tesis, se trata, desde las perspectivas fundamental y aplicada, el desarrollo completo del sensor abarcando desde la concepción teórica hasta la demonstración experimental de su rendimiento y fiabilidad en un túnel de viento. Por último, se presenta un segundo sensor con mejor sensibilidad a costa de una robustez reducida para la detección de pequeños volúmenes de contaminantes químicos en agua. El sensor aprovecha la excitación de un plasmón superficial en el IR-medio que intensifica la interacción entre luz y analito alrededor de resonancias moleculares. Esto enfatiza más si cabe los enormes beneficios que operar el IR-medio puede aportar a futuros sensores fotónicos integrados.
9
Li, Chi Ying Vanessa Materials Science & Engineering Faculty of Science UNSW. "Study of hydrogen storage and electrochemical properties of LANI5-based thin films and porous silicon thin films for mini-fuel cells and micro-batteries". Awarded by:University of New South Wales. Materials Science & Engineering, 2008. http://handle.unsw.edu.au/1959.4/43303.
Testo completoAbstract (sommario):
Two thin film materials - intermetallic and porous silicon thin films, have been studied in this thesis. The first part focuses on the hydrogen storage and electrochemical properties of single layer LaNi5-based thin films fabricated by magnetron sputtering. The aim is to enhance their performance in mini hydrogen storage systems, and their application as electrodes in thin film Ni-MH micro-batteries. Such LaNi5-based thin films were fabricated by magnetron puttering. Using X-ray diffraction (XRD), these thin films revealed a crystalline structure with uniform chemical composition. Using AFM, SEM and TEM, they were found to have a unique microstructure: (1) Nanopores of approximately 15-40 nm which could possibly act as hydrogen reservoir (2) A dense, defect free cross sectional region which would ultimately improve the efficiency and lifetime of the thin film electrodes used in thin film battery. The hydrogen absorption/desorption behaviour of these thin films were determined by volumetric method. The maximum hydrogen content of the La-Ni-A1 film was found to be 1.45 wt% at 333 K which was very close to the theoretical capacity of 1.47 wt%; and higher than that of the La-Ni-AI powder materials (1.2 wt%). Electrochemical properties of the films were measured by simulated battery tests. When discharged at low current, the discharge capacity of the film was similar to that of powder materials - about 220 mAh/g for the first 30 cycles. When the thin film electrode was discharged at a high rate, 4C (current density of 100 mA/g), it could reach the maximum specific capacity of 200 mAh/g and maintained this capacity for 200 cycles; the value was not attainable for La-Ni-AI powder electrode. The presence of crack propagation in film during charge/discharge cycles would improve the electrochemical performance which was different to that of powder materials. Cyclic voltammetry reported that the efficiency of the film could maintain at 80% for the first 200 cycles and gradually decreased due to the formation of corrosion products on surface, which is consistent with the galvanostatic results. XPS (X-ray Photoelectron Spectroscopy) revealed that the corrosion products ??? A1203, La203 and La(OH)3 formed on the film surface after cyclic voltammetry. The second part reported the hydrogen absorption/desorption behaviour of porous silicon thin films. The hydrogen content was determined quantitatively by both volumetric method and thermogravimetric analysis (TGA) and found to be 15 wt% at 423 K under 15 atm of hydrogen pressure. This is an extraordinary amount of hydrogen absorption which supersedes the US Department of Energy's 2007 target of 6.5 wt%. Hydrogen depth profiles of the film after hydrogenation performed by Secondary Ion Mass Spectroscopy confirmed there was hydrogen within the film structure, this was an indication that hydrogen was not just physisorbed on the film surface, but chemisorbed into the porous Si lattice. X-ray diffraction found that there was a lattice contraction upon hydrogen insertion, again suggesting the hydrogen entered into the film structure by chemisorption.
10
Michaud, Jene Diane. "Distributed rainfall-runoff modeling of thunderstorm-generated floods a case study in a mid-sized, semi-arid watershed in Arizona /". Diss., The University of Arizona, 1992. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1992_49_sip1_w.pdf&type=application/pdf.
Testo completo
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GUILLAUDIN, OLIVIER. "Etude et realisation d'une mini-chambre a fils pour la localisation a haut taux de comptage". Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10069.
Testo completoAbstract (sommario):
Une methode de construction de chambres a fils asymetriques a ete developpee pour l'imagerie des rayons x. La technique necessite une region d'absorption (quelques mm pour avoir une bonne efficacite) et une region d'amplification, separees l'une de l'autre par une grille transparente aux electrons. Le detecteur peut fonctionner a tres haut gain (100 000). La faible distance entre les fils et la cathode (0. 18 mm) permet une evacuation rapide des ions positifs crees dans l'avalanche ce qui diminue les effets de charge d'espace et autorise des taux de comptage eleves (300 khz par mm carre). La distance entre fils peut alors etre aussi petite que 0. 3 mm ce qui permet une excellente resolution spatiale. Les electrons liberes par l'absorption d'un photon x diffusent lateralement. Ainsi, ils sont collectes par plus d'un fil anode, une interpolation de la position entre fils peut alors etre obtenue. Pour des x de 8 kev et un melange gazeux a base de xenon, une resolution de 120 microns et une bonne linearite differentielle ont ete mesurees. Bien qu'une lecture a deux dimensions (2d) soit possible, la taille suivant la direction des fils est limitee a quelques cm par des problemes d'instabilite electrostatique. Les detecteurs realises pour les tests sont du type lineaire (1d) avec les fils perpendiculaires a la direction de localisation. La lecture de position se fait sur une ligne resistive avec ponderation par retard
12
Caldeira, Karina Silva. "Fatores determinantes da estrutura de capital de empresas de médio porte da região metropolitana de salvador". Universidade Federal da Bahia, 2008. http://www.adm.ufba.br/sites/default/files/publicacao/arquivo/karina_silva_caldeira.pdf.
Testo completoAbstract (sommario):
p. 1 - 98Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-01-23T19:14:56Z No. of bitstreams: 1 9999999.pdf: 402893 bytes, checksum: be4822072c700c44e2b168a887552b82 (MD5)
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As teorias sobre estrutura de capital sugerem diversas variáveis como determinantes das decisões de financiamento das empresas. Este estudo preocupou-se em analisar alguns fatores que supostamente determinariam o nível de endividamento de empresas de médio porte da Região Metropolitana de Salvador (RMS). Verificou-se, inicialmente, que a maior parte dos trabalhos empíricos sobre as empresas que atuam nos países em desenvolvimento aponta as mesmas variáveis e os mesmos métodos econométricos utilizados nas pesquisas sobre a estrutura de capital das empresas dos países desenvolvidos. Para verificar a existência de relação entre o endividamento e as variáveis composições dos ativos, índice de liquidez corrente, porte, crescimento e rentabilidade foram aplicadas regressões múltiplas em dados cross-section e dados em painel provindos das demonstrações financeiras de empresas de médio porte da RMS durante o período entre 2004 e 2005. Os resultados apontam as variáveis índices de liquidez corrente, composição dos ativos e porte como determinantes da estrutura de capital das firmas analisadas. Conclui-se, com base nesses resultados, que as características dessas empresas e os aspectos institucionais que permeiam a realidade brasileira exercem influência sobre o nível de endividamento das empresas analisadas.
Salvador
13
Balaraman, Devarajan. "Ultra-thin ceramic films for low-temperature temperature embedding of decoupling capacitors into organic printed wiring boards". Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-10272005-011027/.
Testo completoAbstract (sommario):
Thesis (Ph. D.)--Materials Science and Engineering, Georgia Institute of Technology, 2006.Rao R. Tummala, Committee Chair ; Meilin Liu, Committee Member ; Madhavan Swaminathan, Committee Member ; C. P. Wong, Committee Member ; Moises Cases, Committee Member.
14
Skopeteas, Ioannis. "Photographic practice and aesthetics in the film image : the case of the Greek feature films in the mid 1990s". Thesis, University of Westminster, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434289.
Testo completo
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Shrestha, Kiran (Engineer). "Electrical Conduction Mechanisms in the Disordered Material System P-type Hydrogenated Amorphous Silicon". Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc700106/.
Testo completoAbstract (sommario):
The electrical and optical properties of boron doped hydrogenated amorphous silicon thin films (a-Si) were investigated to determine the effect of boron and hydrogen incorporation on carrier transport. The a-Si thin films were grown by plasma enhanced chemical vapor deposition (PECVD) at various boron concentrations, hydrogen dilutions, and at differing growth temperatures. The temperature dependent conductivity generally follows the hopping conduction model. Above a critical temperature, the dominant conduction mechanism is Mott variable range hopping conductivity (M-VRH), where p = ¼, and the carrier hopping depends on energy. However, at lower temperatures, the coulomb interaction between charge carriers becomes important and Efros-Shklosvkii variable hopping (ES-VRH) conduction, where p=1/2, must be included to describe the total conductivity. To correlate changes in electrical conductivity to changes in the local crystalline order, the transverse optical (TO) and transverse acoustic (TA) modes of the Raman spectra were studied to relate changes in short- and mid-range order to the effects of growth temperature, boron, and hydrogen incorporation. With an increase of hydrogen and/or growth temperature, both short and mid-range order improve, whereas the addition of boron results in the degradation of short range order. It is seen that there is a direct correlation between the electrical conductivity and changes in the short and mid-range order resulting from the passivation of defects by hydrogen and the creation of trap states by boron. This work was done under the ARO grant W911NF-10-1-0410, William W. Clark Program Manager. The samples were provided by L-3 Communications.
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Boynton, Ansel John. "EARLY WILDFIRE DETECTION USING TEMPORAL FILTERING AND MULTI-BAND INFRARED ANALYSIS". DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1048.
Testo completoAbstract (sommario):
Every year wildfires threaten or destroy ecological habitats, man-made infrastructure and people’s lives. Additionally millions of dollars are spent each year trying to prevent and control these fires. Ideally if a wildfire can be detected before it rages out of control it can be extinguished and avoid large scale devastation. Traditional manned fire lookout towers are neither cost effective nor particularly efficient at detecting wildfire. It is proposed that temporal filtering can be used to isolate the signals created at the beginnings of potential wildfires. Temporal filtering can remove any background image and any periodic signals created by the camera movement. Once typical signals are analyzed, digital filters can be designed to pass fire signals while blocking the unwanted signals. The temporal filter passes only fire signals and signals generated by moving objects. These objects can be distinguished from each other by analyzing the objects mid and long wave energy profile. This algorithm is tested on 17 data sources and its results analyzed.
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Bizet, Boris. "Design of Waterborne Isocyanate-free Poly(Hydroxy Urethane)s – Poly(Butyl Methacrylate) Hybrids via Miniemulsion and Properties of the Cast Films". Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0019.
Testo completoAbstract (sommario):
L’objectif de cette these consiste au développement de polymères hybrides en dispersion aqueuse composés de poly(hydroxy uréthane)s – PHUs – issus d’huile végétale, et de poly(méthacrylate de butyle) – PolyBMA. La synthèse de bis-carbonates cycliques issus d’acides gras, ainsi que leur comportement en polymérisation en masse avec des diamines également issues d’acides gras, ont été étudiés dans un premier temps. Il a été montré que la structure du bis-carbonate cyclique influence la microstructure du poly(hydroxy uréthane) formé ainsi que les propriétés des poly(hydroxy uréthane)s résultants. Dans un second temps, la conception de dispersions aqueuses d’hybrides polymère-polymère PHU-PolyBMA a été réalisée via l’utilisation d’un procédé de miniémulsion. Des formulations à la fois non-réticulées et réticulées ont été développées et comparées en termes de cinétique, morphologie des particles, capacité à former des films et morphologie des films. D’une part, dans le cas des hybrides non-réticulés, il a été trouvé que le ratio entre le PHU et la phase acrylique jouait un rôle important dans la possibilité de former des films ainsi que la tendance à la ségrégation de phase. D’autre part, l’influence de la réticulation a été analysée et il a été montré qu’elle pouvait être une solution potentielle pour la conception de films plus homogènes, aux propriétés mécaniques modulablesThe objective of this thesis consists in the development of waterborne hybrid polymers composed of vegetable oil-based poly(hydroxy urethane) – PHU – and poly(butyl methacrylate) – polyBMA. To do so, the design of fatty-acid based bis-cyclic carbonates, as well as their behavior in the bulk polymerization with fatty-acid based diamines was firstly studied. The bis-cyclic carbonate structure was found to influence the microstructure of the formed poly(hydroxy urethane)s as well as the properties of the resulting poly(hydroxy urethane)s. Secondly, the design of waterborne PHU-PolyBMA polymer-polymer hybrids was performed using a miniemulsion process. Both non-crosslinked and crosslinked formulations were developed and compared with respect to kinetics, particle morphology, film formation ability and film morphology. On the one hand, in the case of non-crosslinked hybrids, the ratio between the PHU and the acrylic phase was found to have a strong impact onto the film casting ability as well as the extent of phase segregation. On the other hand, the influence of grafting was analyzed and it was shown to be a potential solution towards the formation of more homogeneous films, exhibiting tunable mechanical properties
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Baudet, Emeline. "Micro-capteurs optiques fonctionnant dans l'infrarouge pour la détection de polluants émergents en eaux souterraines et marines". Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S041/document.
Testo completoAbstract (sommario):
Le développement de capteurs optiques fonctionnant dans le moyen infrarouge est un enjeu majeur pour détecter les (bio-) molécules. En effet, le moyen infrarouge (4000 - 400 cm-1) contient une grande majorité des absorptions dues aux vibrations des molécules organiques. L'objectif de ces travaux de recherche est d'élaborer des capteurs plus sélectifs, plus sensibles et plus compacts. Les travaux de recherche présentés dans ce manuscrit concernent donc le développement de guides d'ondes optiques à base de verre de chalcogénure sensibles aux molécules cibles via l'absorption de la partie évanescente de la lumière guidée se propageant à la surface du guide. La synthèse des matériaux infrarouges est l'une des étapes clés. Les verres de chalcogénures sont des matériaux particulièrement appropriés pour cette application de détection de polluants. Ces verres présentent un large domaine de transparence dans l'infrarouge (2 - 15 µm pour les verres à base de sélénium) et des indices de réfraction élevés (entre 2 et 3). L'élaboration du guide d'onde nécessite la fabrication de couches minces de verre de chalcogénure par pulvérisation cathodique RF magnétron. Afin de maîtriser le développement du micro-capteur infrarouge, un plan d'expériences a été élaboré pour étudier l'influence des paramètres de dépôt sur les caractéristiques des couches minces. L'architecture du guide a été définie et réalisée par gravure RIE-ICP (gravure ionique réactive couplée au procédé de gravure plasma à couplage inductif) et les mesures de pertes optiques et d'injection dans le MIR (6,3 µm et 7,8 µm) ont été réalisées. Il s'agit des tous premiers guides fonctionnant aussi loin dans le moyen infrarouge. L'ultime étape consiste à fonctionnaliser la surface du guide augmenter sa sélectivité. Des premiers tests ont été réalisés sur un cristal ATR en ZnSe par un polymère hydrophobe. Ils ont permis la détection de molécules polluantes absorbant à 13,8 µm, présentes en très faible concentration (25 ppb) dans des solutions d'hydrocarbures (BTX) ou des eaux plus complexes (eaux de station d'épuration et eaux souterraines)Development of mid-IR optical sensors is a challenge of great importance for detection of biochemical molecules. Mid-infrared range (4000-400 cm-1) contains the absorptions related to the vibrations of organic molecules. The aim of this work is the elaboration of sensors more selective, sensitive and compact. The work reported in this thesis concerns the development of optical waveguides based on chalcogenide glasses. The evanescent field is used for the detection of pollutant molecules diffusing to the surface of optical waveguide. One of the main step of this research is the synthesis of infrared material. Chalcogenide glasses are appropriate for sensing applications. Indeed, they are used for their wide transparency in the infrared range (2 – 15 µm for selenide glasses) and their high refractive index (between 2 and 3). Elaboration of optical waveguide requires fabrication of chalcogenide thin films by RF magnetron sputtering. In order to control the development of infrared micro-sensor, an experimental design was established to study the influence of sputtering parameters on thin films characteristics. Design of the optical waveguide was defined and etched by RIE-ICP (reactive ion etching-inductively coupled plasma). Measurement of optical losses and injection in mid-infrared (7,8 µm) were realized. This is the first optical waveguides working as far in the mid-infrared. The last step concerns the functionalization of surface waveguides in order to increase their selectivity. First tests were realized on ZnSe ATR prism with a hydrophobic polymer. Thus, detection of pollutant molecules absorbing at 13,8 µm, with very low concentrations (25 ppb), in hydrocarbons solutions (BTX) or in complex water (water purification plant and groundwater) was performed
19
Garnier, Nicolas. "Simulation d’un accélérateur linéaire d’électrons à l’aide du code Monte-Carlo PENELOPE : métrologie des traitements stéréotaxiques par cônes et évaluation de l’algorithme eMC". Thesis, Université Côte d'Azur (ComUE), 2018. http://www.theses.fr/2018AZUR4241/document.
Testo completoAbstract (sommario):
L’accélérateur linéaire d’électrons du Centre Hospitalier Princesse Grace a été simulé à l’aide du code Monte-Carlo PenEasy. Après avoir validé l’ensemble des techniques permettant d’accélérer le temps de calcul (réduction de variance, parallélisation, …), les caractéristiques des faisceaux initiaux d’électrons ont été déterminées pour une énergie photons et quatre énergies électrons afin d’étudier deux problématiques cliniques. La première concerne l’étude comparative des réponses de huit dosimètres pour la mesure des données de base en mini-faisceaux à l’aide de cônes stéréotaxiques de diamètres compris entre 30 mm et 4 mm. Ces faisceaux de photons sont caractérisés par de forts gradients de dose et un manque important d’équilibre électronique latéral, ce qui rend les techniques dosimétriques conventionnelles inadaptées. Des mesures de facteurs d’ouverture collimateur (FOC), de profil de dose et de rendement en profondeur ont été réalisées avec sept détecteurs actifs (diodes, chambres d’ionisations et MicroDiamond) et un détecteur passif (film radiochromique) et comparées avec les résultats issus de la simulation Monte-Carlo considérée comme notre référence. Pour la mesure du FOC, seul le film radiochromique est en accord avec la simulation avec des écarts inférieurs à 1 %. La MicroDiamond semble être le meilleur détecteur actif avec un écart maximal de 3,7 % pour le cône de 5 mm. Concernant les mesures de profils de dose, les meilleurs résultats ont été obtenus avec le film radiochromique et les diodes blindées ou non (écart de pénombre inférieur à 0,2 mm). Pour les rendements en profondeur, l’ensemble des détecteurs utilisés sont satisfaisants (écart de dose absorbée inférieur à 1 %). La deuxième application concerne l’évaluation de l’algorithme de dépôt de dose électron eMC sur des coupes scanographiques. Pour cela, un programme de « voxélisation » sous MATLAB a été développé afin de transformer les nombres Hounsfield issus du scanner en propriété de matériau (densité et composition chimique) utilisable par le code Monte-Carlo PenEasy. Une triple comparaison entre la mesure avec films radiochromiques, le calcul avec l’algorithme eMC et la simulation Monte-Carlo PenEasy a été réalisée dans différentes configurations : des fantômes hétérogènes simples (superposition de plaques de différentes densités), un fantôme hétérogène complexe (fantôme anthropomorphique) et une comparaison sur patient. Les résultats ont montré qu’une mauvaise affectation d’un matériau du milieu provoque un écart de dose absorbée localement (jusqu’à 16 %) mais aussi en aval de la simulation du fait d’une mauvaise prise en compte de la modification du spectre électronique. La comparaison des distributions de dose absorbée sur le plan patient a montré un très bon accord entre les résultats issus de l’algorithme eMC et ceux obtenus avec le code PenEasy (écart < 3 %)Using the PenEasy Monte-Carlo code was simulated the linear electron accelerator of Princess Grace Hospital Center. After the validation of all the techniques allowing to accelerate the calculation time (variance reduction technique, parallelization, etc.), the characteristics of the initial electron beams were determined for one photon energy and four electron energies in order to study two clinical issues. The first one concerns the comparative study of the responses of eight dosimeters for the measurement of basic data in small fields using stereotactic cones with a diameter between 30 mm to 4 mm. These photon beams are characterized by strong dose gradients and a significant lack of charged particule equilibrium, making conventional dosimetric techniques unsuitable. Output factor measurment (OF), dose profile and depth dose measurements were performed with seven active detectors (diodes, ionization chambers and MicroDiamond) and a passive detector (radiochromic film) and compared with the results from the Monte Carlo simulation considered as our reference. For the OF measurement, only the radiochromic film is in agreement with the simulation with difference less than 1%. The MicroDiamond seems to be the best active detector with a maximum gap of 3.7% for the 5 mm cone. Concerning the dose profile measurements, the best results were obtained with the radiochromic film and diodes shielded or not (penumbre difference of less than 0,2 mm). For depth dose, all the detectors used have good result (absorbed dose difference less than 1 %). The second application concerns the evaluation of the eMC electron deposition algorithm on CT slices. For this, a « voxelisation » program under MATLAB was developed to transform the Hounsfield numbers from the scanner to material property (density and chemical composition) usable by the PenEasy Monte-Carlo code. A triple comparison between measurement with radiochromic films, calculation with the eMC algorithm and Monte-Carlo PenEasy simulation was carried out in different configurations: simple heterogeneous phantom (superposition of plates of different densities), a complex heterogeneous phantom (anthropomorphic phantom) and a patient comparison. The results showed that a wrong material assignment of the medium causes a difference of dose absorbed locally (up to 16%) but also downstream the simulation due to a wrong taking into account of the modification of the electronic spectrum. The absorbed dose distribution comparison on the patient plane showed a very good agreement between the results from the eMC algorithm and those obtained with the PenEasy code (deviation < 3%)
20
Martinez, Teran Maria Esther. "Development and evaluation of controlled release pellets in orodispersible tablets for pediatric use". Thesis, Lille 2, 2016. http://www.theses.fr/2016LIL2S051/document.
Testo completoAbstract (sommario):
Dans la dernière décennie, les autorités de santé ont promulgué une réglementation pédiatrique orientée sur le développement et la disponibilité des formulations adaptées à l'âge, la taille, l'état physiologique et les besoins de la population pédiatrique. Généralement, l'administration de médicaments par la voie orale est toujours préférée aux autres voies d'administration car elle est pratique, économique et bien acceptée. Au cours des dernières années, de nouvelles formulations solides ont été développés comme par exemple les comprimés orodispersibles car ils sont faciles à administrer, ne nécessitent pas d'eau et, dès lors que la dispersion est rapide, la biodisponibilité du médicament peut être significativement supérieure à celle observée avec les comprimés classiques offrant ainsi des solutions alternatives pour les enfants. D’autre part, les mini-granules présentent de nombreux avantages par rapport aux formes galéniques solides unitaires car ils se dispersent à travers le tractus gastro-intestinal, réduisant ainsi l'irritation locale du principe actif, et permettent l'amélioration de l'absorption du médicament ainsi que la diminution des fluctuations de concentration plasmatique. De plus, avec ces formes multiparticulaires, il est possible de contrôler la vitesse de libération du médicament, ce qui réduit les effets indésirables. Quelques études ont porté sur la compression des mini-granules non enrobés, ce qui pourraient limiter les problèmes pendant la compression comparativement aux mini-granules enrobés pour lesquels l’enrobage pourrait être détruit.L'objectif global de ce travail était de développer un comprimé multiparticulaire orodispersible (MUP-ODT) qui permet la libération contrôlée d'acétaminophène (APAP), utilisé comme principe actif modèle, contenue dans les mini-granules des comprimés orodispersibles.La première partie a déterminé les propriétés mécaniques des mini-granules d’APAP obtenus par la technique d’extrusion-sphéronisation en contenant différents types d'excipients et différents pourcentages de principe actif pour produire un système matriciel à libération contrôlée.La seconde partie de cette étude a examiné la faisabilité de comprimer des mini-granules non enrobés à base de cellulose microcristalline (MCC) dans différentes formulations orodispersibles et d’étudier l'influence du pourcentage de mini-granules, le type de désagrégant et la force de compression.La troisième partie a été dédiée à la production des MUP-ODTs qui permettent la libération contrôlée d’APAP en utilisant différents pourcentages d’Eudragit® pour créer un système matriciel sans changement significatif dans le profil de libération après la compression.Enfin, dans la dernière partie, un plan d'expérience a été effectué pour déterminer les paramètres optimaux pour produire les MUP-ODTs. L'évaluation du masquage de goût a été réalisée par la langue électronique et la méthode de dissolution à l'aide d'une pompe à seringues qui utilise de fiables volumes de milieu afin de simuler le comportement dans la bouche d’un enfant. Plusieurs polymères ont été utilisés avec succès pour produire des mini-granules d’APAP de type matriciel avec différents pourcentages de principe actif. Les MUP-ODTs ont été obtenus en montrant la faisabilité de leur production et l’obtention de bonnes propriétés mécaniques. Ils permettent la désagrégation très rapide et la possibilité de libération modifiée, tout en offrant une déglutition facile pour un enfant et une flexibilité de posologieIn the last decade, medical agencies have promoted a pediatric regulatory focusing on the development and availability of age-appropriate formulations suitable for age, size, physiological condition and treatment requirements for the pediatric population. In general, oral drug delivery is still preferred over the other drug delivery routes since it is convenient, economical and user friendly. In recent years, a number of new solid oral drug delivery platforms such as orodispersible tablets have been developed as they are easy to administer, do not require additional water and, as long as dispersion is rapid, the bioavailability of the drug can be significantly greater than those observed in conventional tablet dosage forms offering a potential alternative for pediatric patients. In parallel, multiparticulate products present many advantages compared to single-unit dosage forms as they distribute fast through the gastrointestinal tract, thus reducing local irritation caused by the active ingredient, enhancing drug absorption and decreasing fluctuation of plasma peaks. Moreover, it is possible to control the drug release rate, resulting in fewer adverse effects. Only few studies have dealt with the compaction of uncoated pellets, which potentially could provide fewer problems during compaction than coated pellets, in particular by reducing damages on the coating.The overall objective of this study was to develop a Multiple-Unit Pellet Orodispersible Tablet (MUP-ODT) allowing for the controlled release of acetaminophen (APAP), used as a model drug, which is contained in the pellets of the orodispersible tablets.The first part determined the mechanical properties of APAP pellets produced by the extrusion-spheronization technique containing different types of excipients and different drug load percentages to produce a controlled release matrix system.The second part of this study examined the feasibility to compress uncoated free drug MCC pellets with different orodispersible formulations to assess the influence of the percentage of pellets, type of disintegrants and compression force.The third part was dedicated to produce MUP-ODTs which allowing for controlled-release of APAP using different percentages of Eudragit® to create the matrix system without significant changes in the release profile after compression.Finally, a design of experiments was carried out to determinate the optimal parameters to produce MUP-ODTs.Taste-masking evaluation was realized using the electronic tongue. Dissolution test was performed using a syringe pump and small volumes of aqueous medium at low flow rates to mimic the behavior in the mouth of the child.Different polymers were successfully used to produce APAP matrix pellets with different drug loadings. MUP-ODTs were successfully obtained demonstrating their feasible production with good mechanical properties. They enable very fast disintegration and modified release properties, but also offer easy swallowing for children and dose flexibility
21
Duris, Maxime. "Conception et réalisation de filtre optique multicouche à grand nombre de couches minces dans le domaine spectral de 0,3 à 15 µm". Thesis, Rennes 1, 2020. https://ged.univ-rennes1.fr/nuxeo/site/esupversions/f003f6e9-b485-44df-92bc-46b0ed838e2f.
Testo completoAbstract (sommario):
Les filtres optiques à grand nombre de couches minces constituent un élément clé de la performance et de l’innovation des systèmes optiques. Les revêtements de surface dédiés à l’optique sont des vecteurs de recherche dans tous les secteurs industriels associés à l’optique. La conception et la réalisation des filtres optiques multicouches à grand nombre de couches minces opérant dans le moyen infrarouge de 2 µm à 15 µm sont la problématique de recherche de ces travaux de thèse. Dans cette thèse, l’accent a été mis sur l’étude, le déploiement, l’amélioration et l’optimisation des procédures de dépôt du Sulfure de Zinc (ZnS) et de Germanium (Ge). L’optimisation des constantes optiques du Germanium en fonction des paramètres de dépôt par la méthode des plans d’expériences est présentée et discutée. Un plan d'expérience a été utilisé pour étudier et optimiser les conditions de dépôt du Germanium. Ce plan d'expérience traitait 4 paramètres de dépôt : la vitesse de dépôt, le vide avant dépôt, la pression de dépôt et l'assistance ionique (IAD) Les résultats extraits du plan d’expérience comprennent les effets importants de la vitesse de dépôt, de l’assistance ionique de compactage et de leurs interactions, l’effet dissipatif du vide avant dépôt et de la pression de dépôt dans l'enceinte de dépôt sur l’énergie de croissance de la couche mince, et l’obtention d’un ensemble de conditions de dépôt optimisées pour réaliser des couches minces de Germanium avec un indice de réfraction le plus haut possible et un coefficient d’extinction le plus bas possible. Les mises en empilement des matériaux nous ont permis de réaliser plusieurs types de filtres optiques, des revêtements antireflets de 2 µm à 14 µm composés de 2 à 11 couches minces, un miroir à 10,6 µm en 9 couches minces ou bien un filtre dichroïque composé d'un miroir de 2 µm à 5 µm et d'un revêtement antireflet de 8 µm à 14 µm constitué de 29 couches minces. Nous avons pu étudier la fiabilité et la robustesse des couches minces des matériaux améliorés et optimisésOptical filters with a large number of thin films are key elements in the performance and innovation of optical systems. The surface coatings dedicated to optics are vectors of research in all the industrial sectors associated with optics. The design and fabrication of multi-layer optical filters with large number of thin layers with applications in the mid-Infrared spectral range (from 2 µm to 15 µm) are the research problem of this thesis work. In this thesis, the focus was placed on the study, deployment, improvement and optimization of the deposition procedures of Zinc Sulphide (ZnS) and Germanium (Ge). The optimization of the optical constants of Germanium according to the deposition parameters by the design of experiments method is presented and discussed. A design of experiments (DOE) was used to study and optimize Germanium’s deposition conditions, the experiment plan dealt with 4 deposition parameters: deposition speed, pre-deposition vacuum, deposition pressure and ion assisted support (IAD). The results extracted from the DOE include the significant effects of deposition rate, IAD and their interactions, the dissipative effect of pre-deposition vacuum and deposition pressure in the deposition chamber on the growth energy of the thin layer, and a set of deposition conditions optimized to achieve thin layers of Germanium with the highest possible refractive index and extinction coefficient. The stacking of Ge and ZnS thin layers enabled us to fabricate several types of optical filters namely an antireflective coatings from 2 µm to 14 µm composed of 2 to 11 thin layers, a 9 thin-layers mirror at 10,6 µm or a dichroic filter consisting of a 2 µm to 5 µm mirror and an 8 µm to 14 µm antireflective coating consisting of 29 thin-film. Furthermore, we were able to study the reliability and robustness of the thin layers of improved and optimized materials
22
Hsiang, Chin-Yu, e 向晉宇. "Data Hiding in MIDI Files by Adjusting Velocities". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/35179063658808466092.
Testo completoAbstract (sommario):
碩士國立高雄第一科技大學
電腦與通訊工程研究所
99
Music is the greatest and most everlasting one among all art forms produced by human kind, and it combines the people and culture at the time in each period of history. Therefore, we can find traces of history in that period by listening to the mainstream music at that time. Nowadays, our lives are closely related to music, and the ways of recording music have also been gradually replaced by digital data. Music files could be stored in many file types, among which MIDI file is the most similar one to music scores, since they both record all the note information in music content; besides, MIDI files also have a smaller size, and are easy to modify or produce. Information hiding is generally more concerned about the research of image files, and less about music files. However, since MIDI files have a light size, high liquidity, and freedom of information content, it has a significant advantage of information hiding. This paper uses the concept of humanizing and data hiding of MIDI files to process the velocities in the MIDI files to make it conform to human nature. This paper proposed two methods of information hiding in MIDI files: 1. Using prediction-error velocity to conduct data hiding in MIDI files: when the music is played, it usually uses stronger and stronger velocities to deal with ascending scales, and weaker and weaker velocities to deal with descending scales. Whether it is an ascending scale or a descending scale, we can predict the velocity value of a note, and hide the data in the difference between the original and the predicted velocity. In this way, we could keep the expression presented by original velocities. After the data hiding is done, the MIDI files not only sound the same, but also remain the same file sizes. 2. Data hiding of MIDI files with single velocity: we humanize the original single velocity MIDI files, so that they present the weaker or stronger scales vividly as the scales ascend or descend. As the scales ascend or descend, we deduct the velocity values of the one we want to embed from the one following it, thus obtaining the space for embedding; if the scales ascend as the embedding is made, the velocity increases and we add together the velocity values and the embedded information, or we deduct the velocity value from the embedded information to complete the embedding. To a single velocity MIDI file, the humanizing process takes much time and attention to complete, and after the embedding process as stated in the paper is carried out, the velocity produces effects as a humanizing process can achieve, and the music file would sound better than single velocity MIDI files. As proved in experiments, the method that is stated in this paper hides information in the MIDI files according to the humanized presentation of velocities as the music is played without destroying the quality of it, and even makes the velocity condition more conformed to humanized features.
23
Liu, Yi-Hsin, e 劉奕昕. "A Study on Data Hiding in Standard MIDI Files". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/96730196750494721708.
Testo completoAbstract (sommario):
碩士國立高雄第一科技大學
電腦與通訊工程所
97
From then until now, music is one of the arts that is indispensable to human. However, nowadays in the 21 century, the information disseminates fast and the science and technology is getting more and more prosperous. As a matter of course, that helps each media with vigorous development. The digitization of the traditional data is a trend that no one can resist. MIDI (Musical Instrument Digital Interface) is one of the important digital music now, and the file that fit in with MIDI Specifications is so called standard MIDI file. Now on the basis of the domain of the data hiding, comparing to other cover-media, there are not much researching articles about the cover-media of standard MIDI file. Because it only records the commands of music''s performance, it won''t take too much capacity as mp3, wave and etc. It’s not only easy to transmit but also good to spread on the internet. So this character is suitable to be used as cover-media for small quantity data hiding. There are countless files that spread on the Internet, and it would be hard to find out, if the MIDI files which carry the secret message are mixed in them. This dissertation research discuss the characters of standard MIDI files of specifications and constructions of MIDI message and provides three methods to hide the data which can be applied on standard MIDI files. They respectively are using the characters of running status and the command of the note off, the velocity of note off and the numbers represented as variable length quantity to hide data in standard MIDI file. The experimental results prove that, the technique of data hiding that we provide can embed and extract the data successfully and correctly, it can make the capacity only changes a few or even not change as well, and the files can be played normally and the sound and effects of MIDI file won''t be influenced at the same time after embedding the data. Experimental results show that the proposed approaches are feasible and effective.
24
Guo, Guan-Long, e 郭光隆. "A New Classification System of MIDI Music Files Based on Back Propagation Model". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/93956218202981962761.
Testo completoAbstract (sommario):
碩士大同大學
資訊工程學系(所)
92
The main purpose of this thesis is to investigate how to develop an effective classification system that can first categorize the characteristics in MIDI music files and then search similar music in the Internet. In this system, back propagation network is applied to train and categorize the characteristics in MIDI music. Many search engines now can provide efficient ways to search music. However, those search engines only search the files by the names of music, and cannot categorize and compare the music according to the characteristics of music. In this thesis, we select representative songs of eight specific music categories to construct a module that can identify the types of music by means of back propagation network. We introduce the theoretical basis of music classification and present the experiment results to validate the effectiveness of the proposed model.
25
Chen, Ming-Yao, e 陳明瑤. "A Study on Information Hiding in Standard MIDI Files Based on Modifications of Delta Time and Velocity Values". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/76bhws.
Testo completo
26
Wang, Sheng-Yun, e 王聖允. "Mini Cone Penetration Test on Maoluo River Soils with Different Fines Contents". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/38617883756492027461.
Testo completoAbstract (sommario):
碩士臺灣大學
土木工程學研究所
95
This study conducted mini-cone penetration test in the Maoluo River soils of different fines contents under K0 condition with improved precision of the sleeve friction measurement. The effect of fines content on cone penetration resistance and sleeve friction resistance was studied and its relation with the liquefaction resistance of the soil obtained in the cyclic triaxial tests was also evaluated. The test result show the normalized cone penetration resistance decreased with increasing fines content of the Maoluo river soils and the excess pore water pressure increased with increasing fines content of the Maoluo river soils.This study descries that the effects of the excess pore water pressure generation on mini cone penetration resistance and sleeve friction resistance. The results of using the CPT-based liquefaction potential evaluation methods are not in good agreements with those of the laboratory test in this study. The reason maybe that the soils classification methods of the existing methods are not suitable for the local soils with high fines content in Taiwan.
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Yu, Chia-Ni, e 余佳妮. "Numerical study of three-dimensional airflow filed in TFT-LCD stocker mini-environment". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/p67zz2.
Testo completoAbstract (sommario):
碩士國立臺北科技大學
冷凍空調工程系所
99
This study is concerned with three-dimensional airflow field for identifying the excessive contaminant transport in the TFT-LCD stocker mini-environment in which the entrainment of contaminant into the airflow field is contributed by the moving cranein the stocker. As the crane moves in the stocker, it may deterioratethe designated unidirectional airflow field and cause the entrainment of contaminantsfrom its rear base into the induced turbulence flow. The deposition ofsuch contaminants on the surface of TFT-LCD products often causes defects and reduces the product yield rate as well as secondary contamination. To investigate the airflow field and contaminant transport, the numerical simulation using computational fluid dynamics (CFD) toolbased on k-ε modelhas been conducted. The numerical studyshows that the moving crane introduces a low and negative pressurized region at its rear and the displacement of air in thenegative pressurized region induces the turbulence flow which leads to the entrainment of contaminant into the airflow field. It is also found that the turbulence region at the rear of crane becomes larger with the increase of moving speed of crane and the entrainment of contaminant has worsened. Also, the two vertical structures installed at the top of moving crane leads to the formation of turbulence flow and the stagnant of contaminant in the surrounding area. The terminal velocity of contaminant (VTS) is much lower than the moving velocity of crane （Vcrane). Therefore, the trajectory of contaminant in the stocker is primarily affected by the moving velocity of crane.
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Chen, Jian-Xu, e 陳建旭. "Mini Cone Penetration Test for the Liquefaction Resistance of Maoluo River Soils with Different Fines Content". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/08554443555489977539.
Testo completoAbstract (sommario):
碩士國立臺灣大學
土木工程學研究所
94
Abstract This study conducted mini-cone penetration test under K0 condition in a self-designed chamber with saturated Maoluo River sand samples of different fines content. The liquefaction resistances of soils with different fines content were also obtained using the CKC cyclic triaxial test apparatus. The effect of fines content on cone penetration resistance and sleeve friction resistance was studied and the relationship between cone penetration resistance, sleeve friction resistance and the liquefaction resistance of the soil was also evaluated. According to the test results, normalized cone penetration resistance decreased with increasing fines content for soils of the same dry density and the vertical effective stress. Hence, we speculated the reason of fines content adjustment for cone penetration resistance in CPT-based liquefaction potential evaluation method was because the small liquefaction resistance changes while a more significant normalized cone penetration resistance decreasing with increasing fines content. This study also shows the commonly used CPT-based liquefaction potential evaluation methods do not give good agreement with the findings in this study. The main reason is that that these methods do not have the suitable fines content adjustment for the local soils with high fines content in Taiwan.
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Yeh, Ya-Chun, e 葉雅純. "A Study on the Familiarity, Empathy, Destination Image, and Visiting Intention by Watching Mini Short Films". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/39125047032482106943.
Testo completoAbstract (sommario):
碩士國立高雄餐旅大學
旅遊管理研究所
102
Mini short film as the new media is a very popular marketing tool in Taiwan, China and Hong Kong recently. The objective of this study was to measure the immediate impacts of a mini short film on the perceptions of viewers. Based on the conceptual framework of Kim & Richardson(2003), we intended to investigate the impacts of internal factors (empathy, famili-arity and destination images) to visitation intention. The film chosen for this experiment was the Heartbeat Love in which Australia was featured prominently in the film. Using established scales from the tourism and marketing literature, 331 viewers were surveyed after watching the film. The results indicate that varied significantly between empathy, familiarity and visitation intention after watching the mini short film. After watching the film, a large percentage of the respondents expressed a desire to visit the Australia seen in the film, with female showing a significantly higher intention to visit Australia than male participants. The viewers never been to Australia after watching the film was significantly higher than the one had been to Australia. Therefore, mini short film can be produced from a female point of view, and to shape destina-tion image. The results implied that mini short film as a new marketing tool can bring the ben-efits to tourism industries.
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Hooton, Fiona Art History & Art Education College of Fine Arts UNSW. "The impact of the counterculture on Australian cinema in the mid to late 20th century". 2007. http://handle.unsw.edu.au/1959.4/41008.
Testo completoAbstract (sommario):
This thesis discusses the impact of the counterculture on Australian cinema in the late 20thcentury through the work of the Sydney Underground Film group, Ubu. This group, active between 1965 -1970, was a significant part of an underground counter culture, to which many young Australians subscribed. As a group, Ubu was more than a rat bag assemblage of University students. It was an antipodean aspect of an ongoing artistic and political movement that began with the European avant-garde at the beginning of the 20th century and that radically transformed artistic conventions in theatre, painting, literature, photography and film. Three purposes underpin this thesis: firstly to track the art historical links between a European avant-garde heritage and Ubu. Experimental film is a genre that is informed by cross art form interrelations between theatre, painting, literature, photography and film and the major modernist aesthetic philosophies of the last century. Ubu's revolutionary aesthetic approaches included political resistance and the involvement of audiences in the production of art. Their creative wellspring drew from: Alfred Jarry, Dadaism, Surrealism, Futurism, Fluxus, Conceptual and Pop art. This cross fertilization between the arts is critical to understanding not only the Australian experimental movement but the history of contemporary image making. The second purpose is to fill a current void of research about early Australian Experimental film. This is a significant gap given it was a national movement with many international connections. The counterculture movement also contains many major figures in Australian art history. These individuals played their parts in the Sydney Push, Oz magazine and the activities of the Yellow House and have since become important multi arts practitioners and commentators. Thirdly, the thesis attempts to evaluate Ubu's political and social agenda for the democratization of film appreciation through their objectives of: production, exhibition, distribution and debate of experimental film both nationally and internationally. Ultimately the group would succeed in these objectives and in winning the war on repressive censorship laws. Their influence has informed the practice of many of Australia's current film heavy weights. Two key films have been selected for analysis, It Droppeth as the Gentle Rain (1963) and Newsfront (1978). The first looks forward to Ubu's contemporary practices and political agenda while the second demonstrates their longer term influences on mainstream cinema.
31
Chang, Chih-Hsuan, e 張智宣. "Study of ultrafast dynamics of pulsed-laser-deposited Cu0.5Bi2Se1.5Te1.5 thin films by optical pump mid-infrared probe spectroscopy". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/55707048344855916852.
Testo completoAbstract (sommario):
碩士國立交通大學
電子物理系所
102
In this work, we have prepared Cu0.5Bi2Se1.5Te1.5 thin films were grown on sapphire(Al2O3)(0001) substrates by pulsed laser deposition(PLD) with various deposition temperatures. We analyzed their crystal structure and thin film quality by X-ray diffraction(XRD) and Raman spectroscopy. The physical properties in Cu0.5Bi2Se1.5Te1.5 thin films with various temperature conditions were studied by Fourier transform infrared spectroscopy(FTIR) and Hall measurement. We could find the intervalley scattering in Cu0.5Bi2Se1.5Te1.5 singal crystal by using optical pump mid-infrared probe spectroscopy(OPMP). Then we used the same system(OPMP) to measure the best condition of Cu0.5Bi2Se1.5Te1.5 thin film. And there was another signal suspected surface state signal.
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Sensenig, Thomas S. "Development, fire history and current and past growth, of old-growth and young-growth forest stands in the Cascade, Siskiyou and mid-coast mountains of southwestern Oregon /". 2002. http://hdl.handle.net/1957/8355.
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