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Dissertations / Theses on the topic 'Biometrics'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Janečka, Petr. "Multimodální biometrický systém kombinující duhovku a sítnici." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-234910.

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This diploma thesis focuses on multibiometric systems, specifically on biometric fusion. The thesis describes eye biometrics, i.e. recognition based on retina and iris. The key part consists of design and implementation specification of a biometric system based on retina and iris recognition.

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2

Pereira, Tiago de Freitas 1985. "A comparative study of countermeasures to detect spoofing attacks in face authentication systems = Um estudo comparativo de contramedidas para detectar ataques de spoofing em sistemas de autenticação de faces." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261478.

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Orientador: José Mario De Martino<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-23T20:06:41Z (GMT). No. of bitstreams: 1 Pereira_TiagodeFreitas_M.pdf: 17638731 bytes, checksum: 15a8d07214e3b31accd3218e5bde20cb (MD5) Previous issue date: 2013<br>Resumo: O Resumo poderá ser visualizado no texto completo da tese digital<br>Abstract: The complete Abstract is available with the full electronic document.<br>Mestrado<br>Engenharia de Computação<br>Mestre em Engenharia Elétrica

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3

Hmani, Mohamed Amine. "Use of Biometrics for the Regeneration of Revocable Crypto-biometric Keys." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAS013.

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Ce travail de thèse vise à régénérer des clés crypto-biométriques (clés cryptographiques obtenues avec des données biométriques) résistantes aux méthodes de cryptanalyse quantique. Le défi est d'obtenir des clés avec une haute entropie pour avoir un haut niveau de sécurité, sachant que l'entropie contenue dans les références biométriques limite l'entropie de la clé. Notre choix a été d'exploiter la biométrie faciale.Nous avons d'abord créé un système de reconnaissance faciale de pointe basé en utilisant des bases de données publiques. Notre architecture utilise des réseaux de neurones profonds

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4

Holeksa, David. "Návrh audio-vizuální databáze pro extrakci sekundárních biometrických a ne-biometrických znaků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-220544.

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The aim of this semester project is to design a suitable database structure for the audio-visual data, parts extracted from the data corresponding to secondary biometric and non-biometric characteristics and description of these characters. The resulting database will be used for research into the identification of audio-visual content of multimedia data.

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Gancarčík, Lukáš. "Vicefaktorová autentizace elektronických dokumentů." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2013. http://www.nusl.cz/ntk/nusl-224008.

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The aim of the thesis is to provide complete information regarding electronic documents and possibilities of their usage. The focus is concentrated on the area of authentication, which specifies the possibility of obtaining authentication information and describes the authentication processes itself. The diploma thesis also deals with the suggestion of multifactor authentication of electronic documents for the selected company.

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6

Samangooei, Sina. "Semantic biometrics." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/153901/.

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Gait and face biometrics have a unique advantage in that they can be used when images are acquired at a distance and signals are at too low a resolution to be perceived by other biometrics. Given such situations, some traits can be difficult to extract automatically but can still be perceived semantically using human vision. It is contended that such semantic annotations are usable as soft biometric signatures, useful for identification tasks. Feature subset selection techniques are employed to compare the distinguishing ability of individual semantically described physical traits. Their ident

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7

Varadinov, Petr. "Účel a implementace snímání otisků prstů v osobních počítačích." Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-162689.

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This diploma thesis deals with fingerprint recognition applied in personal computers. The topic is analyzed both chronologically in historical context and in connection with other biometric methods. The thesis provides a comprehensive survey of the topic. It starts with physical layer, goes through hardware parts and ends with software architecture. A special attention is paid to programming fingerprint recognition support into end-user applications. These are the aims of the thesis: to place the silicon fingerprint sensing technology into the historical context and describe its evolution in c

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8

Ferreira, Iuri Emmanuel de Paula [UNESP]. "Delineamentos D-ótimos para os modelos de Michaelis-Menten e de Hill." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/87920.

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Made available in DSpace on 2014-06-11T19:23:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-16Bitstream added on 2014-06-13T19:08:49Z : No. of bitstreams: 1 ferreira_iep_me_botib.pdf: 634855 bytes, checksum: c96cf169bba179f1ace49fe3a550f384 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Os resultados de muitos experimentos em áreas da biologia, como a farmacologia, a bioquímica e a agronomia, geralmente são analisados por ajustes de modelos não-lineares através dos quais pretende-se explicar a resposta através dos fatores pré-especificados no ex

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9

Martins, Andréa Camila dos Santos [UNESP]. "O método de pontos interiores no planejamento da radioterapia." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/95056.

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Made available in DSpace on 2014-06-11T19:27:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-25Bitstream added on 2014-06-13T19:14:53Z : No. of bitstreams: 1 martins_acs_me_botib.pdf: 559361 bytes, checksum: de5a9b02a1bd741bc6a0e45d2d7a0f21 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Um tratamento do câncer por radioterapia tem como objetivo a eliminação das células do tumor e preservação das células saudáveis, obtendo assim uma melhor homo-geneização da dose administrada e menor possibilidade de complicações clínicas durante o tratamento. O s

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10

Brobeck, Stefan, and Tobias Folkman. "Biometrics : Attitudes and factors influencing a breakthrough in Sweden." Thesis, Jönköping University, JIBS, Business Informatics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-148.

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<p>Biometrics is a collection of methods for identifying and authorizing individuals with something they are, or do. It is considered to be one of the most secure technologies for security, both physical and logical. Security is something very important for organizations today, but yet there has been a low interest in investing in biometrics for security in Sweden.</p><p>The purpose of this thesis has been to establish factors to why biometrics has not been implementedto any large extent, even though the technology has been around for long. We have evaluated the attitudes and views of individu

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Fouad, Marwa. "Towards Template Security for Iris-based Biometric Systems." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22736.

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Personal identity refers to a set of attributes (e.g., name, social insurance number, etc.) that are associated with a person. Identity management is the process of creating, maintaining and destroying identities of individuals in a population. Biometric technologies are technologies developed to use statistical analysis of an individual’s biological or behavioral traits to determine his identity. Biometrics based authentication systems offer a reliable solution for identity management, because of their uniqueness, relative stability over time and security (among other reasons). Public accepta

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12

Santos, Maurício Bedim dos [UNESP]. "Delineamentos ótimos para experimentos farmacocinéticos." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/87911.

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Made available in DSpace on 2014-06-11T19:23:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-03-05Bitstream added on 2014-06-13T20:49:53Z : No. of bitstreams: 1 santos_mb_me_botib.pdf: 406376 bytes, checksum: e3bf80284bc0601811da0e5c76ccb445 (MD5)<br>Os ensaios na area de farmacologia cl nica envolvem coletas sangu neas e medidas da informação (concentração de um fármaco) em horários pré estabelecidos. A prática atual, na maioria das vezes, estabelece os tempos de coleta arbitrariamente, o que pode resultar em dados pouco informativos para ajustar um modelo. Uma metodologia para re

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Ferreira, Iuri Emmanuel de Paula. "Delineamentos D-ótimos para os modelos de Michaelis-Menten e de Hill /." Botucatu : [s.n.], 2010. http://hdl.handle.net/11449/87920.

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Orientador: Luzia Aparecida Trinca<br>Banca: Cláudia Pio Ferreira<br>Banca: Silvio Sandoval Zocchi<br>Banca: Miriam Harumi Tsunemi<br>Banca: Julia Maria Pavan Soler<br>Resumo: Os resultados de muitos experimentos em áreas da biologia, como a farmacologia, a bioquímica e a agronomia, geralmente são analisados por ajustes de modelos não-lineares através dos quais pretende-se explicar a resposta através dos fatores pré-especificados no experimento. As estimações dos parâmetros ou das funções de interesse podem ser imprecisas se os níveis dos fatores não forem adequadamente escolhidos, impossibili

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Martins, Andréa Camila dos Santos. "O método de pontos interiores no planejamento da radioterapia /." Botucatu : [s.n.], 2011. http://hdl.handle.net/11449/95056.

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Orientador: Helenice de Oliveira Florentino Silva<br>Banca: Andréa Carla Gonçalves Vianna<br>Banca: Antônio Roberto Balbo<br>Resumo: Um tratamento do câncer por radioterapia tem como objetivo a eliminação das células do tumor e preservação das células saudáveis, obtendo assim uma melhor homo-geneização da dose administrada e menor possibilidade de complicações clínicas durante o tratamento. O sucesso do tratamento depende de um bom planejamento. Para um planejamento ótimo, técnicas matemáticas estão sendo utilizadas com o objetivo de maximizar a radiação no tumor e minimizar a radiação nas reg

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15

Goswani, B. "Lip-based behavioural biometrics." Thesis, University of Surrey, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533201.

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Vala, Hiralba. "Facial biometrics for forensics." Thesis, Vala, Hiralba (2021) Facial biometrics for forensics. Masters by Coursework thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/63402/.

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Facial biometrics works by verifying and identifying a person based on behavior and physical behavior. Biometric plays a significant role in today's safety environment. Face recognition technology stems from the use of providing secure access to Smartphones, identifying criminal suspects to identify criminal suspects from photographs considered as a tool of the justice system. Recently, facial biometrics have been added to this list and introduced one of the safest ways to verify authenticity. The techniques and methods of face biometrics are a face-to-face comparison system that verifies faci

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17

Mikaelyan, Anna. "Compact orientation and frequency estimation with applications in biometrics : Biometrics on the orientation express." Doctoral thesis, Högskolan i Halmstad, CAISR Centrum för tillämpade intelligenta system (IS-lab), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28205.

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Automatic feature extraction still remains a relevant image and signal processing problem even tough both the field and technologies are developing rapidly. Images of low quality, where it is extremely difficult to reliably process image information automatically, are of special interest. To such images we can refer forensic fingerprints, which are left unintentionally on different surfaces andare contaminated by several of the most difficult noise types. For this reason, identification of fingerprints is mainly based on the visual skills of forensic examiners. We address the problem caused by

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18

Pisani, Paulo Henrique. "Biometrics in a data stream context." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-08052017-141153/.

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The growing presence of the Internet in day-to-day tasks, along with the evolution of computational systems, contributed to increase data exposure. This scenario highlights the need for safer user authentication systems. An alternative to deal with this is by the use of biometric systems. However, biometric features may change over time, an issue that can affect the recognition performance due to an outdated biometric reference. This effect can be called as template ageing in the area of biometrics and as concept drift in machine learning. It raises the need to automatically adapt the biometri

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19

Gibavičius, Darius. "Genetinių algoritmų taikymas biometrijoje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100617_141716-09318.

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Baigiamajame magistro darbe nagrinėjamas genetinių algoritmų taikymas biometrijoje. Išnagrinėta plačiausiai naudojama biometrinė informacija, aprašytos labiausiai paplitusios biometrinės sistemos, genetiniai algoritmai bei jų pritaikymas biometrinių sistemų optimizavimui. Baigiamajame darbe pasiūlytas naujas rankos atpažinimo metodas. Šiam metodui pritaikyti genetiniai algoritmai. Darbą sudaro 7 dalys: įvadas, biometrija, genetiniai algoritmai, genetinių algoritmų taikymas biometrinėse sistemose, genetinių algoritmų taikymas rankos atpažinimui, išvados ir literatūra. Darbo apimtis – 51 p. teks

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Kodaira, Juliana Yukari [UNESP]. "Uma abordagem probabilística do número de reprodução básica em modelos epidemiológicos com aplicação na ferrugem do eucalipto." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/87914.

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Made available in DSpace on 2014-06-11T19:23:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-25Bitstream added on 2014-06-13T18:09:08Z : No. of bitstreams: 1 kodaira_jy_me_botib.pdf: 813284 bytes, checksum: 8a31684d77b5886e0104b40a4777583b (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Na epidemiologia matemática, uma importante medida derivada do modelo determinístico associado à dinâmica de transmissão de uma doença infecciosa é o número esperado de infecções secundárias produzidas por um caso indexado em uma população completamente suscetível,

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Canuto, Jânio Coutinho. "Eficiência da análise multifractal na verificação de assinaturas dinâmicas." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259415.

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Orientador: Lee Luan Ling<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-16T11:24:26Z (GMT). No. of bitstreams: 1 Canuto_JanioCoutinho_M.pdf: 5638185 bytes, checksum: a7de3e11ab9d81ea1011ac08ccef240a (MD5) Previous issue date: 2010<br>Resumo: A verificação de identidades de forma confiável é cada vez mais necessária em nossa sociedade amplamente interconectada. Nesse contexto, a verificação biométrica é uma proposta alternativa, e mais segura, aos métodos tradicionalmente utilizados, como

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Santos, Maurício Bedim dos. "Delineamentos ótimos para experimentos farmacocinéticos /." Botucatu : [s.n.], 2010. http://hdl.handle.net/11449/87911.

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Orientador: Luiza Aparecida Trinca<br>Banca: José Silvio Govone<br>Banca: Silvio Sandoval Zocchi<br>Resumo: Os ensaios na area de farmacologia cl nica envolvem coletas sangu neas e medidas da informação (concentração de um fármaco) em horários pré estabelecidos. A prática atual, na maioria das vezes, estabelece os tempos de coleta arbitrariamente, o que pode resultar em dados pouco informativos para ajustar um modelo. Uma metodologia para resolver este tipo de problema e a construcão de delineamentos otimos. Em geral, os modelos envolvem equações não lineares. Sendo que um modelo popular e o m

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Zahidi, Salman. "Biometrics - Evaluation of Current Situation." Thesis, Linköpings universitet, Informationskodning, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-73230.

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Information security has always been a topic of concern in the world as an emphasis on new techniques to secure the identity of a legitimate user is regarded as top priority. To counter such an issue, we have a traditional way of authentication factors “what you have” and “what you know” in the form of smart cards or passwords respectively. But biometrics is based on the factor “who are you” by analyzing human physical or behavioral characteristics. Biometrics has always been an efficient way of authorization and is now considered as a $1500 million industry where fingerprints dominate the bio

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Reid, Daniel. "Human identification using soft biometrics." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/352293/.

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Humans naturally use descriptions to verbally convey the appearance of an individual. Eyewitness descriptions are an important resource for many criminal investigations. However, they cannot be used to automatically search databases featuring video or biometric data - reducing the utility of human descriptions in the search for the suspect. Soft biometrics are a new form of biometric identification which uses physical or behavioural traits that can be naturally described by humans. This thesis will explore how soft biometrics can be used alongside traditional biometrics, allowing video footage

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Ariyanto, Gunawan. "Model-based 3D gait biometrics." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/352080/.

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Gait biometrics has attracted increasing interest in the computer vision and machine learning communities because of its unique advantages for recognition at distance. However, there have as yet been few gait biometric approaches which use temporal three-dimensional(3D) data. Clearly, 3D gait data conveys more information than 2D gait data and it is also the natural representation of human gait as perceived by humans.The University of Southampton has created a multi-biometric tunnel using twelve cameras to capture multiple gait images and reconstruct them into 3D volumetric gait data. Some ana

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Syed, Idrus Syed Zulkarnain. "Soft biometrics for keystroke dynamics." Caen, 2014. http://www.theses.fr/2014CAEN2024.

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Aujourd'hui, il existe de multiples usages des systèmes biométriques à de nombreuses fins telles que le contrôle d'accès physique, le contrôle de présence, le paiement électronique et autres. Cette thèse de doctorat porte sur l'authentification biométrique et nous proposons d'utiliser la dynamique de frappe au clavier afin d'éviter les problèmes d'authentification par mot de passe. La dynamique de frappe au clavier mesure les rythmes qui se dégagent lorsqu'on tape sur un clavier d'ordinateur. En ce sens, c'est une modalité biométrique comportementale, de même que la dynamique de signature, la

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Svoboda, Jan. "System for Recognition of 3D Hand Geometry." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2014. http://www.nusl.cz/ntk/nusl-412913.

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V posledním desetiletí došlo ke zvýšení zájmu o užití 3D dat k biometrické identifikaci osob. Možná vůbec největší výzkum proběhl v oblasti 3D rozpoznávání podle obličeje, přičemž je v současné době dostupných vícero komerčních zařízení. V oblastni rozpoznávání podle 3D geometrie ruky byl v minulých letech proveden určitý výzkum jehož výsledkem však nebylo žádné komerční zařízení. Nezávisle na tomto výzkumu se v posledních letech velmi rozšířil trh s cenově dostupnými 3D sensory, což potenciálně umožňuje jejich nasazení v mnoha typech biometrických systémů. Hlavním cílem této práce je vytvořit

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Viana, Rodrigo Sartorelo Salemi [UNESP]. "Programação linear à criação de planejamentos otimizados em radioterapia." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/87916.

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Made available in DSpace on 2014-06-11T19:23:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-22Bitstream added on 2014-06-13T19:28:51Z : No. of bitstreams: 1 viana_rss_me_botib.pdf: 778475 bytes, checksum: 024e8c40dfa8c250c876d1b70410fee5 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Um planejamento para radioterapia é considerado ótimo quando todos os parâmetros envolvidos sejam eles físicos ou biológicos, foram investigados e adequados individualmente para cada paciente. Neste tipo de planejamento, a grande preocupação é com a irradiação do tu

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Larco, Bravo Julio Cesar. "Autenticação pessoal baseada no som da assinatura." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260146.

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Orientador: João Baptista Tadanobu Yabu-uti<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-06T16:56:48Z (GMT). No. of bitstreams: 1 LarcoBravo_JulioCesar_M.pdf: 1532173 bytes, checksum: 6a43168475c621b64174f99ac42aadc5 (MD5) Previous issue date: 2006<br>Resumo: Uma assinatura manuscrita, é a forma mais utilizada para con?rmar a dentidade de uma pessoa, já a que o estilo de assinar de um indivíduo é uma entidade biométrica que pode ser usada para diferenciar uma pessoa de outra. Neste traba

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Kodaira, Juliana Yukari. "Uma abordagem probabilística do número de reprodução básica em modelos epidemiológicos com aplicação na ferrugem do eucalipto /." Botucatu, 2011. http://hdl.handle.net/11449/87914.

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Orientador: José Raimundo de Souza Passos<br>Banca: Edson Luiz Furtado<br>Banca: Laécio Carvalho de Barros<br>Resumo: Na epidemiologia matemática, uma importante medida derivada do modelo determinístico associado à dinâmica de transmissão de uma doença infecciosa é o número esperado de infecções secundárias produzidas por um caso indexado em uma população completamente suscetível, conhecido como número de reprodução básica R0. Utilizando simulações de Monte Carlo, estudamos o efeito da incerteza sobre R0 em modelos compartimentos de transmissão de doenças, associando variáveis aleatórias unifo

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Alsaade, Fawaz. "Score-level fusion for multimodal biometrics." Thesis, University of Hertfordshire, 2008. http://hdl.handle.net/2299/1364.

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This thesis describes research into the score-level fusion process in multimodal biometrics. The emphasis of the research is on the fusion of face and voice biometrics in the two recognition modes of verification and open-set identification. The growing interest in the use of multiple modalities in biometrics is due to its potential capabilities for eradicating certain important limitations of unimodal biometrics. One of the factors important to the accuracy of a multimodal biometric system is the choice of the technique deployed for data fusion. To address this issue, investigations are carri

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Pillay, Surosh Govindasamy. "Voice biometrics under mismatched noise conditions." Thesis, University of Hertfordshire, 2011. http://hdl.handle.net/2299/5531.

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This thesis describes research into effective voice biometrics (speaker recognition) under mismatched noise conditions. Over the last two decades, this class of biometrics has been the subject of considerable research due to its various applications in such areas as telephone banking, remote access control and surveillance. One of the main challenges associated with the deployment of voice biometrics in practice is that of undesired variations in speech characteristics caused by environmental noise. Such variations can in turn lead to a mismatch between the corresponding test and reference mat

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Rankin, Deborah M. "Automated image analysis of Iris biometrics." Thesis, University of Ulster, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.587480.

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The iris of the eye is considered to be the most discriminatory of facial features. It is often assumed that an individual's iris pattem remains unchanged throughout their lifetime. However, clinical findings suggest that changes in the iris can occur due to ageing and in response to external factors such as medications, disease and surgery. Such changes in the appearance of the iris need to be addressed when considering the iris as a biometric. The extent of change over time and whether this affects the appearance of the iris sufficiently to impact on its value as a biometric measure requires

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Fortuna, JoseÌ. "Speaker indexing based on voice biometrics." Thesis, University of Hertfordshire, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427534.

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Drosou, Anastasios. "Activity related biometrics for person authentication." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/23659.

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One of the major challenges in human-machine interaction has always been the development of such techniques that are able to provide accurate human recognition, so as to other either personalized services or to protect critical infrastructures from unauthorized access. To this direction, a series of well stated and efficient methods have been proposed mainly based on biometric characteristics of the user. Despite the significant progress that has been achieved recently, there are still many open issues in the area, concerning not only the performance of the systems but also the intrusiveness o

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Kruszynski, Joshua A. "Biometrics in Interaction and Interface Design." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1468694579.

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WANG, HAOCHEN. ""Gaze-Based Biometrics: some Case Studies"." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1280026.

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WANG, HAOCHEN. ""Gaze-Based Biometrics: some Case Studies"." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1280066.

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WANG, HAOCHEN. ""Gaze-Based Biometrics: some Case Studies"." Doctoral thesis, Università degli studi di Pavia, 2018. http://hdl.handle.net/11571/1280086.

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Buriro, Attaullah. "Behavioral Biometrics for Smartphone User Authentication." Doctoral thesis, Università degli studi di Trento, 2017. https://hdl.handle.net/11572/368167.

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Pervasive in nature and extensively used for a wide range of features, smartphone provides functionality such as social networking, online shopping, mobile gaming, private/group communication, etc. While using these services, a user has to provide private information such as account credentials, credit card details, etc., which are then stored on the device. This information, if lost, can result in a user's privacy leakage and monetary loss. Therefore, significance of securing a smartphone from adversarial access becomes paramount. Despite being security and privacy critical, smartphones are s

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Buriro, Attaullah. "Behavioral Biometrics for Smartphone User Authentication." Doctoral thesis, University of Trento, 2017. http://eprints-phd.biblio.unitn.it/1935/1/Final_Thesis_Attaullah.pdf.

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Pervasive in nature and extensively used for a wide range of features, smartphone provides functionality such as social networking, online shopping, mobile gaming, private/group communication, etc. While using these services, a user has to provide private information such as account credentials, credit card details, etc., which are then stored on the device. This information, if lost, can result in a user's privacy leakage and monetary loss. Therefore, significance of securing a smartphone from adversarial access becomes paramount. Despite being security and privacy critical, smartphones are s

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Garcia, Iberê Anselmo. "A segurança na identificação: a biometria da íris e da retina." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/2/2136/tde-24062010-084048/.

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A presente dissertação aborda o processo de identificação por biometria das estruturas oculares, analisando suas bases biológicas e tecnológicas e sua aplicabilidade e confiabilidade para utilização jurídica. Está dividida em três partes. Na primeira, são analisados aspectos do conceito de identidade em suas diversas acepções e do processo de identificação médico legal por meio da utilização de diferentes métodos. Na segunda, passa-se a estudar a biometria da íris e da retina, abordando suas bases biológicas e tecnológicas. Na terceira e última parte, estuda-se a aplicabilidade e confiabilidad

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Sanderson, Conrad, and conradsand@ieee org. "Automatic Person Verification Using Speech and Face Information." Griffith University. School of Microelectronic Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030422.105519.

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Identity verification systems are an important part of our every day life. A typical example is the Automatic Teller Machine (ATM) which employs a simple identity verification scheme: the user is asked to enter their secret password after inserting their ATM card; if the password matches the one prescribed to the card, the user is allowed access to their bank account. This scheme suffers from a major drawback: only the validity of the combination of a certain possession (the ATM card) and certain knowledge (the password) is verified. The ATM card can be lost or stolen, and the password can be

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Sumner, Kristine. "AIRPORT SECURITY: EXAMINING THE CURRENT STATE OF ACCEPTANCE OF BIOMETRICS AND THE PROPENSITY OF ADOPTING BIOMETRIC TECHNOLOGY FO." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2475.

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The terrorist attacks of September 11, 2001 propelled the issue of aviation security to the forefront of the U.S. domestic agenda. Although hundreds of individual airports exist in the U.S., the travel activities at each of these airports combine to holistically comprise an aviation system that represents a significant portion of the U.S. social and economic infrastructure. Disruption at one airport resulting from a criminal act, such as terrorism, could exert detrimental effects upon the aviation system and U.S national security (9/11 Commission, 2004). Each U.S. airport is individually respo

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Viana, Rodrigo Sartorelo Salemi. "Programação linear à criação de planejamentos otimizados em radioterapia /." Botucatu : [s.n.], 2010. http://hdl.handle.net/11449/87916.

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Orientador: Helenice de Oliveira Florentino Silva<br>Banca: Diana Rodrigues de Pina<br>Banca: Maria do Socorro Nogueira Rangel<br>Resumo: Um planejamento para radioterapia é considerado ótimo quando todos os parâmetros envolvidos sejam eles físicos ou biológicos, foram investigados e adequados individualmente para cada paciente. Neste tipo de planejamento, a grande preocupação é com a irradiação do tumor com o mínimo dano possível aos tecidos saudáveis da região irradiada, principalmente aos órgãos de riscos. O planejamento ótimo para radioterapia pode ser auxiliado pela Programação Linear e e

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Saevanee, Hataichanok. "Continuous user authentication using multi-modal biometrics." Thesis, University of Plymouth, 2014. http://hdl.handle.net/10026.1/3033.

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It is commonly acknowledged that mobile devices now form an integral part of an individual’s everyday life. The modern mobile handheld devices are capable to provide a wide range of services and applications over multiple networks. With the increasing capability and accessibility, they introduce additional demands in term of security. This thesis explores the need for authentication on mobile devices and proposes a novel mechanism to improve the current techniques. The research begins with an intensive review of mobile technologies and the current security challenges that mobile devices experi

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Hurley, David J. "Force field feature extraction for ear biometrics." Thesis, University of Southampton, 2001. https://eprints.soton.ac.uk/256792/.

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The overall objective in defining feature space is to reduce the dimensionality of the original pattern space, whilst maintaining discriminatory power for classification. To meet this objective in the context of ear biometrics a novel force field transformation is introduced in which the image is treated as an array of mutually attracting particles that act as the source of a Gaussian force field. In a similar way to Newton’s Law of Universal Gravitation pixels are imagined to attract each other according to the product of their intensities and inversely to the square of the distance between t

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Allen, Anthony W. Jr. "Young Adult Perception and Acceptance of Biometrics." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1363891122.

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Zheng, Nan. "Exploiting behavioral biometrics for user security enhancements." W&M ScholarWorks, 2014. https://scholarworks.wm.edu/etd/1539623640.

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As online business has been very popular in the past decade, the tasks of providing user authentication and verification have become more important than before to protect user sensitive information from malicious hands. The most common approach to user authentication and verification is the use of password. However, the dilemma users facing in traditional passwords becomes more and more evident: users tend to choose easy-to-remember passwords, which are often weak passwords that are easy to crack. Meanwhile, behavioral biometrics have promising potentials in meeting both security and usability

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Vogel, Robin. "Similarity ranking for biometrics : theory and practice." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAT031.

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L’augmentation rapide de la population combinée à la mobilité croissante des individus a engendré le besoin de systèmes de gestion d’identités sophistiqués. À cet effet, le terme biométrie se réfère généralement aux méthodes permettant d’identifier les individus en utilisant des caractéristiques biologiques ou comportementales. Les méthodes les plus populaires, c’est-à-dire la reconnaissance d’empreintes digitales, d’iris ou de visages, se basent toutes sur des méthodes de vision par ordinateur. L’adoption de réseaux convolutifs profonds, rendue possible par le calcul générique sur processeur

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