Thèses sur le sujet « PROVA DIGITALE »
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Gammarota, Antonio <1966>. « Informatica forense e processo penale : la prova digitale tra innovazione normativa e incertezze giurisprudenziali ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7723/1/Gammarota_Antonio_tesi.pdf.
Texte intégralThe work moves from the stages of Forensic Informatics development in Italy, continues through a systematization of the discipline, then moves on to the analysis of the technical issues and legal significance constituting the assumption of fact common to the legal topics being investigated. The research not only focuses on an examination of the forensic IT issues and of those interdisciplinary with Criminal Law, Procedural Digital Law and computer forensics, but especially deals with difficult themes of Forensic Informatics and issues little explored by the legal literature in order to isolate and develop them with innovative originality, moving from the rules of the Budapest Convention and Law 48/2008 of its Ratification in Italian acts. In this analysis, the innovative elements of the work are many, varied and relate to: • clarifications of the legal terminology of Forensic Informatics over which the candidate often dwells, demonstrating even today what is often misused; • scientific-ontological definition of the digital data, considered key to the whole Forensic Informatics foundation; • the physical and legal nature of digital data, object of investigations and surveys and their material-immaterial dimension, affecting the exegesis and the practice of the legal doctrines; • repeatable and /or unrepeatable nature of the acts of investigation involving digital data, considered one of the most serious systemic idiosyncrasies of the discipline; • digital documentary evidence and the relationship between the original, primary and copied digital documents, in the criminal process; • consequences of such reasoning, still neglected by Criminal Processual Law, in the most recent jurisprudence of merit and legitimacy.
Gammarota, Antonio <1966>. « Informatica forense e processo penale : la prova digitale tra innovazione normativa e incertezze giurisprudenziali ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7723/.
Texte intégralThe work moves from the stages of Forensic Informatics development in Italy, continues through a systematization of the discipline, then moves on to the analysis of the technical issues and legal significance constituting the assumption of fact common to the legal topics being investigated. The research not only focuses on an examination of the forensic IT issues and of those interdisciplinary with Criminal Law, Procedural Digital Law and computer forensics, but especially deals with difficult themes of Forensic Informatics and issues little explored by the legal literature in order to isolate and develop them with innovative originality, moving from the rules of the Budapest Convention and Law 48/2008 of its Ratification in Italian acts. In this analysis, the innovative elements of the work are many, varied and relate to: • clarifications of the legal terminology of Forensic Informatics over which the candidate often dwells, demonstrating even today what is often misused; • scientific-ontological definition of the digital data, considered key to the whole Forensic Informatics foundation; • the physical and legal nature of digital data, object of investigations and surveys and their material-immaterial dimension, affecting the exegesis and the practice of the legal doctrines; • repeatable and /or unrepeatable nature of the acts of investigation involving digital data, considered one of the most serious systemic idiosyncrasies of the discipline; • digital documentary evidence and the relationship between the original, primary and copied digital documents, in the criminal process; • consequences of such reasoning, still neglected by Criminal Processual Law, in the most recent jurisprudence of merit and legitimacy.
PACELLA, GEMMA. « La subordinazione tra etero-direzione e etero-organizzazione : un'antica discussione alla prova del lavoro svolto tramite piattaforma digitale ». Doctoral thesis, Università Politecnica delle Marche, 2020. http://hdl.handle.net/11566/274549.
Texte intégralThe thesis work examines the recent phenomenon of work done by means of a digital platform, with a closer look at the well-known events concerning riders in the food delivery sector, in order to debate whether this leads to a new conclusion in the old discussion of the delimitation of the dependent employment case. As mentioned in the introduction, on demand forms of employment, contextualized within the greater phenomenon of the so-called gig economy, of which an in-depth analysis is provided, are now spread on a global scale and pose questions linked to every economic and social legal sector (employment law, tax and trade law, private law, etc.). The subject, which in the thesis work is limited to issues relating to employment relationships, poses the legal form of the same relationship as a more urgent question: paradoxically, the legislation, up to the last intervention of the law of November 2nd 2019, No. 128, the jurisprudence, with the latest ruling of the Court of Appeal of January 24th 2020, No. 1663, and finally the legal interpretation, variously addressed – but in truth not resolved – the legal form of the case, mainly providing a “remedial” approach to the problem, i.e. aimed at acknowledging and guaranteeing protection, of course urgent, for on demand workers. Conversely, the research study conducted thus far highlighted, since the precursory parts, the need to contextualize the employment relationships carried out by means of a digital platform in compliance with the principle of legal certainty and, in particular, proposed a new theory aimed at recognizing the status of subordination of the food delivery sector workers, criticizing the opposite theory based on the fact that the hetero-direction of platforms towards the riders could not be ascertained since they are free to choose if and when to work. In the first place, the study was carried out by rebuilding the idea of subordination, starting from its first assumptions. The reconstruction was naturally conducted in accordance with the interpretations formerly recoverable in the tenet and accounting for the main orientations developed by jurisprudence. In the first chapter it is observed how, indeed, the elements traditionally attributed to the subordination of the employment relationship converge to the so-called hetero-direction. By contrast, the hetero-organization element almost never found appreciation in the legal interpretation and jurisprudence as an identification feature of the dependent employment case, and it was interpreted as the placement of the worker within the entrepreneur’s organization. However, in the second chapter, the study tried to prove that hetero-organization is as important an element as hetero-direction in order to determine the subordinate nature of an employment relationship. The theory was debated starting first and foremost from the regulatory data, i.e. through the interpretation of the “dependence” element, mentioned in section 2094 of the Italian Civil Code, as well as by recovering a historic ruling of the Constitutional Court (No. 30 of 1996) which narrowly defined subordination as the existence of a double alienation of the result and organization, precisely. Once clarified the concept of subordination that we intend to support, the thesis work, in the third chapter, attempts to verify if, in light of the idea of subordination as a hetero-organization of work by the employer, on demand employment relationships in the food delivery sector can be classified as subordinate. The attempt required a specific analysis of the factors that characterize the employment relationship of the so-called riders: in this part, in fact, data relating to the spread of the phenomenon, the economic and social impact on our system, as well as the main consequent legal issues were reconstructed. Specifically, precious was the analysis of the rulings that, in different legal systems of other countries, learned about the employment relationship in question in order to detect the main elements that jurisprudence made use of in respect to the definition of the case present in each system. As for Italy, the traditional principle of prevalence of the implementation of the executive phase over paper will was also taken into consideration for qualifying purposes. From here we came to ascertain the existence of a double alienation in the employment relationship between couriers and digital platforms, also accounting for the rulings of the European Court of Justice over the entrepreneurial nature of the latter, by carrying out an in-depth analysis of the concrete organization of work and its transformations underway. Once intertwined these data, it was argued that the employment relationships of cycle-couriers carried out by means of digital platforms can be considered subordinate employment relationships, given the existence of the result alienation as well as the organization alienation . Furthermore, an attempt was made to object to the main if not the only subject that would preclude recognition of the subordinate nature of the riders’s employment relationship; namely the fact that, being able to choose if and when to work, they would benefit from a decision-making autonomy incompatible with subordination. Then, the fourth chapter offers an in-depth analysis of the main union events that affected on demand jobs, for two essential reasons: first because the position of traditional and non-traditional unions was crucial, not only in Italy, in regulating employment relationships in the food delivery sector, and then because the transformations of the methods of implementation of work services, represented by the massive use of technology, also affected the industrial relations, to such an extent that unprecedented questions were posed for the union law, referred to in the carrying out of the research study. Finally, in the last chapter, the most recent law No. 128/2019 was taken into consideration, which regulates the employment relationship carried out also by means of a digital platform, both through the extension of the regulation of subordinate work to hetero-organized collaborators, pursuant to section 2 of Legislative Decree No. 81/2015, as amended by section 1 of the same law, and through the application of a significant protection system to the riders who are self-employed. Hence, once again, a regulatory intervention that eludes the legal form profile of the case, posing significant issues of legal certainty and following the path of a merely remedial approach to the urgent question of the riders’ exploitation, perhaps extending the protections stemming from the status of subordination, yet, without explicitly recognizing it.
Lannerheim, Kristoffer. « Elevers upplevelser av digitala prov : En undersökning om hur högstadieelever uppfattar och påverkas av digitaliserade prov ». Thesis, Umeå universitet, Institutionen för tillämpad utbildningsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-164934.
Texte intégralAndersson, Susanne, et Sofie Uppman. « En fokusgruppsstudie om digital kompetens i förskolan : Prova, testa, göra om - där skapas kompetens ». Thesis, Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-14438.
Texte intégralHoldschip, Rodrigo [UNESP]. « A influência dos sistemas de gerenciamento de cores em provas digitais ». Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/89740.
Texte intégralCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Na indústria gráfica, sempre se buscou o desenvolvimento e aprimoramento de sistemas de provas com o objetivo de simular as características visuais do impresso final podendo assim prever os resultados. Atualmente, avanços tecnológicos em imagens digitais têm modificado a infra-estrutura da indústria gráfica. Demorados sistemas de provas analógicos tem sido substituído por provas digitais. O surgimento de uma infinidade de diferentes dispositivos como scanners, câmeras digitais, impressoras, aliados a uma variedade de processos de produção, substratos, tintas e a adoção de diferentes especificações, tornam a reprodução exata das cores um tanto quanto difícil. Para solucionar este problema sistemas de gerenciamento das cores baseados em perfis de cor ICC (Consórcio Internacional da Cor) tem se tornado o maior aliado. É neste contexto que esta pesquisa pretende avaliar a influência dos sistemas de gerenciamento de cores em impressoras a jato de tinta na obtenção de cores impressas com valores CIELAB próximos aos descritos pelo perfil de cor ISOcoated_v2_eci utilizado como referência, objetivando sua utilização como prova digital de cor com o intuito de simular as características visuais deste padrão, possibilitando uma verificação das cores do trabalho antes de sua impressão. Problemas de insatisfação com relação às cores entre clientes, agências e gráficas também passam a ser minimizados
The influence of the systems of color management in digital proofs. In the graphical industry, always one searched the development and improvement of systems of proofs with the objective to simulate the visual characteristics of the final printed matter thus being able to foresee the results. Currently, technological advances in digital images have modified the infrastructure of the graphical industry. Delayed analogical systems of proofs he been substituted for digital proofs. The sproutng of a infinity of different devices as scanners, digital, printer cameras, allies to a variety of production processes, substrata, inks and the adoption of different specifications, becomes the accurate reproduction of colors on how much in such a way difficult. To solve this problem systems of color management based on profiles of color ICC (International Color Consortium) if it has become the greater ally. It is in this context that this research intends to evaluate the influence of the systems of management of colors in printers the spurt of ink in the attainment of colors printed with values CIELAB next to the described ones for the profile to color used ISOcoated_v2_eci as reference, objectifying its use as digital test of color with intention to simulate the characteristics appearances of this standard, making possible a verification of the colors of the work before its impression. Problems of insatisfation with relation to the colors between custormers, agencies and graphical also pass to be minimezed
Nordin, Lisa. « Att lämna papper och penna för ett digitalt läromedel : en fenomenografisk studie av elevers upplevelser att använda ett digitaliserat läromedel ». Thesis, Linnéuniversitetet, Institutionen för didaktik och lärares praktik (DLP), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-70261.
Texte intégralMagri, Bernardo Caraponale. « Assinatura digital Rabin-Williams - sem randomização e com prova eficiente de segurança ». Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-10092012-165253/.
Texte intégralWith the development of public-key cryptography, many efforts were made to build encryption and signature protocols that were provably secure against malicious adversaries. There are many definitions of security for encryption and signature protocols, and there are many adversary models to simulate the behaviour of a malicious adversary against a given protocol. The Rabin family of signature protocols has the speed records for verification of signature, being up to 100 times faster than RSA. This work presents a tight security proof in the random oracle model for a variant of the Rabin signature protocol presented by Bernstein, that does not require the use of pseudo-random bits, making the protocol more robust. The proof presented here is a polynomially tight reduction for the problem of integer factorization to the problem of breaking the Principal Rabin-Williams B = 0 protocol.
Ferreira, Neto Arthur Leopoldino. « Prova documental eletrônica no processo do trabalho : validade e valoração ». Pontifícia Universidade Católica de São Paulo, 2017. https://tede2.pucsp.br/handle/handle/19729.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The indisputable current essentiality of the internet, with the information technology revolution, has brought a radical change in legal relationships, both in the form of data storage and information exchange, and in the conduct of judicial processes. We can see nowadays a significant change in legal relationships, since the records that were previously made on paper, are now carried out digitally, through electronic documents. This facility raises some troubling points. Among them, the credibility of the electronic document because of its abstract support in the face of the material support of the traditional document. Another point is: is the technology nowadays enough that we can equip it with the traditional document? We can not forget that security is the main fear of those who use electronic means. The reliability of electronic documents is associated with the conviction that it has not been adulterated in the path between sender and receiver, and that its author subscribes. This is the panorama on which the problem of this work is based, so that electronic evidence can be given probative force
A indiscutível atual essencialidade da internet, com a revolução da tecnologia da informação, trouxe radical alteração nas relações jurídicas, tanto na forma de armazenamento de dados e troca de informações, quanto na condução dos processos judiciais. Pode-se perceber nos dias atuais, uma mudança significativa nas relações jurídicas, pois os registros que antes eram realizados em papel, agora são realizados de forma digital, por meio de documentos eletrônicos. Essa facilidade levanta alguns pontos preocupantes. Entre eles, a credibilidade do documento eletrônico em razão de seu suporte abstrato face o suporte material do documento tradicional. Outro ponto é: a tecnologia disposta hoje em dia é suficiente para que possamos equipará-lo ao documento tradicional? Não se pode olvidar que a segurança é o principal receio dos que utilizam os meios eletrônicos. A confiabilidade dos documentos eletrônicos está associada à convicção de que este não foi adulterado no caminho entre remetente e destinatário, bem como de que seu autor é quem o subscreve. Esse é o panorama em que se assenta a problemática deste trabalho, para que se possa conferir força probatória aos documentos eletrônicos
Vaz, Denise Provasi. « Provas digitais no processo penal : formulação do conceito, definição das características e sistematização do procedimento probatório ». Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/2/2137/tde-28052013-153123/.
Texte intégralThe development of new technologies and the consequent rise of the Information Society, starting in the twentieth century, led to new personal and social habits and a revolution in the processing and storage of information. In this context, treatment and record of facts and ideas turned to be made digitally with the use of electronic devices operating in the binary system. This new situation has brought several consequences for the criminal proceedings, notably with respect to the evidence. However, legislation and case law have not kept up with the pace of technological change, opening up a normative vacuum in the field of evidence. For this reason, it is essential to analyze the technical and social aspects of this new scenario state of evidence theory in the wake of these changes, so as to conceptualize and establish a proper legal and evidentiary procedure for the verification of digital evidence in the criminal justice process. In assessing the concept and the legal nature of digital evidence, this thesis demonstrates that digital evidence is fundamentally a distinct kind of evidence, which, while similar to the document, nevertheless presents unique characteristics that require specific regulation of its evidentiary procedure. From the definition of the concept, classification and characterization of digital evidence, this thesis examines the proper methods of obtaining and producing digital evidence in a manner consistent with its unique nature, while at the same time questioning the sufficiency and adequacy of the rules in the current law regarding such methods. Finally, this thesis proposes a rudimentary framework of rules for this field.
Santos, Ricardo César Ribeiro dos. « Reconstrução digital massivamente paralela de corpos de prova de concreto a partir de tomografia industrial ». reponame:Repositório Institucional da UFPR, 2014. http://hdl.handle.net/1884/37091.
Texte intégralCo-orientador : Prof. Dr.. Walmor Cardoso Godoi
Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduação em Métodos Numéricos em Engenharia. Defesa: Curitiba, 27/08/2014
Inclui referências
Área de concentração: Mecânica Computacional
Resumo: Ensaios nao destrutivos sao importantes para a analise de estruturas de concreto. Sua realizacao, entretanto, necessita de amostras que devem ser retiradas das estruturas a serem analisadas, tais como barragens e usinas. A tomografia industrial, mediante a obtencao de mapas de densidade, aliada a modelos e ferramentas de simulacao, tem um papel relevante no contexto de ensaios nao destrutivos. Como as ferramentas de simulacao atuais fazem uso de modelos geometricos poligonais, torna-se necessario extrair superficies mediante a geracao de malhas poligonais, a partir do volume de dados, usando tecnicas tais como o algoritmo Marching Cubes. Este trabalho trata da geracao de malhas poligonais de alta definicao a partir de testemunhos de concreto, os quais apresentam dimensoes que normalmente impactam o desempenho, o consumo de memoria e ate mesmo a factibilidade do processamento. Para a solucao destes desafios, foi contemplada a solução utilizando uma implementacao massivamente paralela do algoritmo Marching Cubes. Foi implementada uma versao paralela deste algoritmo utilizando a linguagem CUDA/C para programacao da GPU de forma a conseguir ganho de tempo de processamento na geracao de malhas de alta definicao para imagens tomográficas de corpos de prova de concreto. A avaliacao do ganho de velocidade de processamento foi realizada comparando-se a solucao paralelizada com um prototipo desenvolvido em MATLAB. Foram desenvolvidos modulos de software em codigo prototipo para auxiliar na analise da solucao. As analises realizadas mostram que o uso de paralelismo massivo mediante GPU tem grande potencial para esse tipo de aplicacao, nao obstante o aumento no consumo de memoria devido a necessidade de controle mais sofisticado na transferencia de dados no processamento. A reducao do tempo de processamento obtida como resultado neste estudo foi significativa, a saber, de doze horas na arquitetura serial para pouco mais de quarenta segundos na arquitetura paralela. Palavras-chave: GPU, CUDA, Marching Cubes, Tomografia Industrial, Geracao de Isossuperficies Poligonais, concreto
Abstract: Non-destructive testing is an important procedure for the analysis of concrete structures. It requires, however, structural samples to be extracted from buildings such as dams or bridges. In order to acquire data regarding the geometry and the topography of both surface and internal structures, industrial tomography can be used, through the acquisition of density maps. This data can be used with simulation software applications and models. However, the aforementioned procedures require polygonal meshes, hence, the necessity to extract surfaces from the volumetric data. In order to create such models, algorithms must be used, such as the Marching Cubes algorithm, with the purpose of generating a virtual model corresponding to the real object in a given density. The purpose of this document is to detail the creation of high density polygonal meshes from concrete samples that generate density maps with dimensions that pose a challenge to both processing time and memory consumption, posing a problem to the feasibility of the solution. To overcome these challenges, the CUDA/C language was used for programming a Graphics Processing Unit (GPU) to decrease the processing time required to extract polygonal surfaces from tomographic images. To evaluate the speed increment of the algorithm, the execution time of the parallelized version was compared with the initial serial MATLAB implementation. Additionally, auxiliary code was implemented aiming a robust memory management. The results confirm that massive parallel GPU programming can be used to reduce the processing time, even though memory consumption, due to the more sophisticated management techniques implemented for data transfer, was higher. As an overall result, the processing time decreased from approximately twelve hours on the serial implementation to approximately forty seconds on the massive parallel approach, with a corresponding increase in memory consumption. Keywords: GPU, CUDA, Marching Cubes, Industrial Tomography, Polygonal Isossurfaces generation
Magnusson, Emelie. « Nationella läsförståelseprov – på papper eller på skärm ? : En studie av elevresultat på digitala läsförståelseprov gentemot pappersbaserade prov ». Thesis, Högskolan Dalarna, Svenska som andraspråk, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:du-22807.
Texte intégralMed anledning av den kommande digitaliseringen av de nationella proven syftar denna studie till att undersöka om elevers resultat på läsförståelseprov skiljer sig åt beroende på om eleverna får provet på dator eller på papper. Studien undersöker även om provresultaten mellan pojkar och flickor samt svenska- och svenska som andraspråkselever skiljer sig åt. Tidigare forskning har gett splittrade resultat. Några studier har visat att elever får bättre resultat på ett pappersbaserat prov än på ett digitalt och några har visat att resultaten inte skiljer sig åt beroende på provformen. I denna studie användes det nationella läsförståelseprovet för kurserna Svenska 1 och Svenska som andraspråk 1, ett i digital och ett i pappersbaserad form. 38 elever i årskurs 1 på en gymnasieskola deltog i studien. Resultatet visade inte på någon skillnad mellan de båda provformerna utan att medelvärdet av delprovsresultaten var detsamma för proven. Pojkarna fick signifikant lägre resultat än flickorna på både det digitala och det pappersbaserade provet. Svenska som andraspråkseleverna fick lägre resultat än svenskeleverna. Resultatet diskuteras i relation till tidigare forskning av Ackerman och Lauterman (2012), Mangen, Walgermo och Brønnick (2013), Rasmusson (2014), Pasquarella, Gottardo och Grant (2012) och Norman och Furnes (2016).
Azevedo, Lucas Silveira de [UNESP]. « Televisão digital interativa : alternativa de design e usabilidade para o aplicativo som e prosa ». Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/89522.
Texte intégralO trabalho apresenta estudos sobre o design e usabilidade de aplicativos interativos na televisão digital. Tem como objetivo demonstrar conceitos sobre o tema, compreender seu desenvolvimento e propor um modelo de aplicativo em Ginga para o programa Som e Prosa da Televisão Universitária Unesp embasado pela metodologia exploratória a pesquisa colhe referências em levantamentos documentais e bibliográficos. Dessa forma, ao final é apresentado um aplicativo que pretende auxiliar o desenvolvimento de novos conteúdos interativos na emissora
The project presents studies on design and usability of interactive applications for digital television. Aims to demonstrate concepts on the subject understand its development and propose a model of application in Ginga for the program Sound and Prose for University Television Unesp. Grounded by exploratory research methodology collects references on surveys bibliographic and documentary. Thus, the end is presented as application that intended to assist the development of new interactive content on station
Azevedo, Lucas Silveira de. « Televisão digital interativa : alternativa de design e usabilidade para o aplicativo som e prosa / ». Bauru, 2013. http://hdl.handle.net/11449/89522.
Texte intégralBanca: Marcos Americo
Banca: João Carlos Massarolo
Resumo: O trabalho apresenta estudos sobre o design e usabilidade de aplicativos interativos na televisão digital. Tem como objetivo demonstrar conceitos sobre o tema, compreender seu desenvolvimento e propor um modelo de aplicativo em Ginga para o programa Som e Prosa da Televisão Universitária Unesp embasado pela metodologia exploratória a pesquisa colhe referências em levantamentos documentais e bibliográficos. Dessa forma, ao final é apresentado um aplicativo que pretende auxiliar o desenvolvimento de novos conteúdos interativos na emissora
Abstract: The project presents studies on design and usability of interactive applications for digital television. Aims to demonstrate concepts on the subject understand its development and propose a model of application in Ginga for the program Sound and Prose for University Television Unesp. Grounded by exploratory research methodology collects references on surveys bibliographic and documentary. Thus, the end is presented as application that intended to assist the development of new interactive content on station
Mestre
Silva, Audarzean Santana da. « Gravação dos depoimentos prestados em juízo : um novo modelo para oitiva de pessoas ». reponame:Repositório Institucional do FGV, 2009. http://hdl.handle.net/10438/7793.
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Neste trabalho acadêmico, apresentado para obtenção do título de mestre, fez-se uma abordagem sobre o novo modelo de oitiva de pessoas em juízo, que grava as inquirições verbais em vez de convertê-las em texto ditado que é registrado em papel, tal como ocorre no modelo tradicional. O problema que o trabalho buscou enfrentar é se o novo modelo deveria ser adotado pelo Judiciário Brasileiro, em substituição ao modelo tradicional, por possibilitar ganho real de tempo nas audiências e ter melhor custo-benefício. Teve-se como objetivo geral fazer a análise do novo modelo de oitiva de pessoas e como objetivos específicos identificar as vantagens e as desvantagens da gravação dos depoimentos, fazer uma comparação entre os dois modelos (o tradicional e o novo) e investigar se o novo modelo se encaixa à celeridade exigida do Judiciário. O método usado para enfrentar o problema foi o indutivo. Realizou-se pesquisa de campo por meio de questionário enviado aos juízes do Estado de Rondônia. Após a abordagem teórica e o resultado da pesquisa, foi possível concluir que o novo modelo deve substituir o modelo tradicional por trazer celeridade ao processo e melhor custo-benefício. O trabalho também constatou a conveniência de cada Poder Judiciário disponibilizar serviços de transcrição, próprios ou terceirizados, para que o novo modelo seja adotado sem resistência.
Holdschip, Rodrigo. « A influência dos sistemas de gerenciamento de cores em provas digitais / ». Bauru : [s.n.], 2008. http://hdl.handle.net/11449/89740.
Texte intégralAbstract: The influence of the systems of color management in digital proofs. In the graphical industry, always one searched the development and improvement of systems of proofs with the objective to simulate the visual characteristics of the final printed matter thus being able to foresee the results. Currently, technological advances in digital images have modified the infrastructure of the graphical industry. Delayed analogical systems of proofs he been substituted for digital proofs. The sproutng of a infinity of different devices as scanners, digital, printer cameras, allies to a variety of production processes, substrata, inks and the adoption of different specifications, becomes the accurate reproduction of colors on how much in such a way difficult. To solve this problem systems of color management based on profiles of color ICC (International Color Consortium) if it has become the greater ally. It is in this context that this research intends to evaluate the influence of the systems of management of colors in printers the spurt of ink in the attainment of colors printed with values CIELAB next to the described ones for the profile to color used ISOcoated_v2_eci as reference, objectifying its use as digital test of color with intention to simulate the characteristics appearances of this standard, making possible a verification of the colors of the work before its impression. Problems of insatisfation with relation to the colors between custormers, agencies and graphical also pass to be minimezed
Orientador: João Fernando Marar
Coorientador: Marizilda dos Santos Menezes
Banca: Jairo José Drummond Câmara
Banca: Luiz Antonio Vasques Hellmeister
Mestre
Krupalija, Amar. « DigiExam Cross Platform-Klient : Cross platform-klient för att göra digitala prov ». Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-39120.
Texte intégralDigiExam is an Edtech company with main focus on digital assessment. The company develops a platform that enables schools to minimize administrative overhead for teachers and enables students to use tools to help and improve their writing during an exam. In order to be able to take a test on a computer or tablet, the student needs to have some kind of software installed for digital exams. DigiExam used to have four clients for four operative systems. Two of the clients were based on the same source code while the other two were unique which made implementation and maintenance of features unnecessarily costly and time consuming. To deal with these issues the company decided to develop a cross platform-client which enables the developers to use one base source code for all clients and operative systems. The cross platform client developed in this dissertation proves that it is possible to create an application based on web technology and that uses the operative systems full potential. This dissertation gives an example how a cross platform client can be developed and resulted in client for Mac OSX and Windows that shares the same base source code as the Chromebook and iOS clients.
Giova, Giuliano. « Weblabs na investigação forense de sistemas eletrônicos digitais ». Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-02052011-123348/.
Texte intégralDigital systems have become ubiquitous, there are nearly a billion computers connected to Internet, and essential for human activities. This leads to the increase of the number of legal cases whose solution depends on the forensic examination of electronic devices. The investigation of unlawful acts is almost always made on site: bailiffs and experts witness collect suspect computers and take them to specialized laboratories maintained by the governments (criminology institutes), universities or even by expert witnesses. Experts appointed by judges and, if eligible, representatives of the defendants and plaintiffs, conducts technical examinations based on forensic methods and tools. The result of this work is submitted to the Judge as an expert witness report whose quality has severe social repercussions as a matter of conviction and decision in the trial proceedings. This quality is under serious threat due to demand greater than available resources and due to growing complexity. Few centers of study have resources and enough technical skill enough to overcome these challenges, and those centers are often distant from users: thousands of courts and police stations throughout Brazil. It is really necessary the academic community engagement to bring solutions to those new social demands by means of latest scientific findings. One of the most promising technologies in this area is an Internet remotely accessible laboratory, using so called WebLab technology, in Brazil developed mainly by the Fapesp project KyaTera. This dissertation explores and contextualizes these themes and makes a preliminary analysis about an alternative which, depending on future complementary studies, may offer to legal professionals and especially to experts and technical assistants remote access to specialized laboratories for the examination of electronic digital systems, providing a tool to society that makes forensic exams more reliable.
Carneiro, Mario Luis. « Desenvolvimento de sistema de controle para geração e absorção ativa de ondas em tanques de ensaios de estruturas oceânicas ». Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-18072013-153405/.
Texte intégralThis work presents the development of a control system for active absorption of waves as part of the implementation of a new test tank of ocean structures at the University of São Paulo. The tank is equipped with 148 wave generators disposed around its perimeter to allow the generation of waves in all directions. The implemented method of wave absorption is based on digital filters with hydrodynamic feedback given by level sensors solidary to the wave generator. Were studied recursive and non-recursive, one-dimensional and two-dimensional filters. A method for stability analysis of the closed loop control system it is also presented. To evaluate the performance of the absorption control system, a series of experiments was performed considering regular waves with propagation direction normal to the wave generator and some oblique directions. Were also performed tests with irregular waves with propagation direction normal to the wave generator. The experimental reflection coefficient obtained showed good adherence to the theoretical values, presenting a maximum of 5.61% for an angle of incidence between 0o to 45o in the frequency range of operation of the tank. In tests with oblique waves was observed the appearance of a lateral wave resonance with highest frequency of the generated wave, prohibiting the accomplishment of long term experiments of waves with different incidence angle of 0o. At the end it is made suggestions to correct this problem.
Kjellin, Emma. « Digitala matematikprestationer : En studie om att visa sina kunskaper via digitala verktyg ». Thesis, Mittuniversitetet, Institutionen för matematik och ämnesdidaktik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-40516.
Texte intégralAlmeida, Maria Izabel de Andrade. « Prosa argumentativa em língua inglesa : um estudo contrastivo sobre advérbios em corpora digitais ». Universidade do Estado do Rio de Janeiro, 2010. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2908.
Texte intégralEsta pesquisa tem como objetivo principal investigar como aprendizes brasileiros de língua inglesa usam advérbios com terminação em ly no inglês escrito, e comparar ao uso que deles fazem os falantes de inglês como língua materna. Para tanto, o trabalho encontra suporte teórico e metodológico na Linguística de Corpus e fundamenta-se na área chamada de pesquisa sobre corpora de aprendizes, que se ocupa da coleta e armazenagem de dados linguísticos de sujeitos aprendizes de uma língua estrangeira, para a formação de um corpus que possa ser utilizado para fins descritivos e pedagógicos. Esta área objetiva identificar em que aspectos os aprendizes diferem ou se assemelham aos falantes nativos. Os corpora empregados na pesquisa são o corpus de estudo (Br-ICLE), contendo inglês escrito por brasileiros, compilado de acordo com o projeto ICLE (International Corpus of Learner English) e dois corpora de referência (LOCNESS e BAWE), contendo inglês escrito por falantes de inglês como língua materna. Os resultados indicam que os alunos brasileiros usam, em demasia, as categorias de advérbios que indicam veracidade, realidade e intensidade, em relação ao uso que deles fazem os falantes nativos, além de usarem esses advérbios de forma distinta. Os resultados sugerem que, além das diferenças apresentadas em termos de frequência (seja pelo sobreuso ou subuso dos advérbios), os aprendizes apresentavam combinações errôneas, ou em termos de colocados ou em termos de prosódia semântica. E finalmente a pesquisa revela que a preferência dos aprendizes por advérbios que exprimem veracidade, realidade e intensidade cria a impressão de um discurso muito assertivo. Conclui-se que as diferenças encontradas podem estar ligadas a fatores como o tamanho dos corpora, a influência da língua materna dos aprendizes, a internalização dos elementos linguísticos necessários para a produção de um texto em língua estrangeira, a falta de fluência dos aprendizes e o contexto de sala de aula nas universidades
This research investigates how Brazilian learners of English use adverbs ending in-ly in written English and compares their use to that of speakers of English as a mother tongue. To this end, the work resorts to Corpus Linguistics as both theoretical and methodological support. The research is based on the area called Learner Corpora Research, which deals with the collection, storage and analysis of linguistic data produced by learners of a foreign language, which can then be used for descriptive and teaching purposes. This area aims to identify ways in which learners use of the foreign language is different or similar to that of native speakers. The data used in this research are the corpus of study (Br-ICLE), containing written English produced by Brazilian learners, built according to the ICLE project (International Corpus of Learner English), as well as two reference corpora (Locness and BAWE) containing written English produced by speakers of English as a mother tongue. The results indicate that Brazilian learners overuse the categories of adverbs that indicate truth, reality and intensity in comparison to the use made by native speakers, furthermore they use these adverbs in different ways. The results also suggest that, given the differences in frequency (either by overuse or underuse of adverbs), the learners tend to misuse combinations in terms of collocates or in terms of semantic prosody. And finally, the research reveals that the preference of learners for adverbs expressing truth, reality and intensity creates the impression of very assertive voices. We conclude that these differences may be related to factors such as the size of the corpus, the influence of the learners mother tongue, the internalization of linguistic elements needed to produce a text in a foreign language or even the lack of fluency of the learners and the classroom context in the universities
Manoel, Paulo Afonso Franzon [UNESP]. « Influência de parâmetros físicos e do processamento digital utilizado nos sinais oriundos do ensaio charpy instrumentado ». Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/110505.
Texte intégralNeste estudo foi avaliada a influência dos parâmetros físicos (rigidez do cutelo, comprimento do corpo de prova, geometria do cutelo) sobre a magnitude das interferências presentes nas curvas força vs tempo e força vs deslocamento, também foi estudado o efeito de diversos filtros sobre o sinal coletado. Foram empregados cutelos instrumentados (atuando como células de carga) de diferente rigidez e também um cutelo com geometria distinta em relação aos demais. Foram realizados ensaios com corpos de prova de comprimento iguais a 55m (em conformidade com a ASTM E-23), 70 mm e 85 mm. Os dados foram tratados com filtros digitais: passa-baixa, passa-alta, passa-faixa e média móvel, os espectros dos sinais filtrados foram comparados aos dos sinais originais. Os resultados indicaram que a rigidez do cutelo possui relação inversa com a magnitude das interferências, por outro lado o comprimento do corpo de prova possui relação direta com o aumento no nível de interferências, o cutelo com geometria diferenciada também exerceu influência sobre a curva força vs deslocamento. A média móvel mostrou-se promissor no tratamento dos dados, desde que seja utilizado um número reduzido de pontos, de modo a não eliminar componentes fundamentais do sinal de interesse. Para os casos analisados o espectro do sinal encontra-se entre 100 Hz e 50 kHz, no entanto a faixa entre 10 kHz e 50 kHz há predomínio das componentes responsáveis pelas interferências.
In this work, was the influence of physical parameters evaluated (stiffness of the striker, length of the specimen, the geometry of the striker) on the magnitude of the interference present in the curves load vs. time and load vs. displacement, the effect of various filters on the signal obtained was also studied. In this study, instrumented strikers (like load cells) of different stiffness and were used a striker which has a different geometry than the others was also tested. Furthermore, the tests were conducted with specimens with length equal to 55 mm (according with ASTM E-23), 70 mm and 85 mm. The data were processed by these digital filters: low pass, high pass, band pass and moving average. The spectrums of the filtered signals were compared with the original ones. The results showed that the stiffness of the striker has an inverse relation with the magnitude of the interference. On the other hand, the length of the specimen has a direct relation with the increased level of interference, the striker with different geometry also exerted influence on the load vs displacement curve. The moving average filter has been a good way out in the treatment of data, but is necessary to use a limited number of points in order not to eliminate essential components of the signal which contains information about the deformation and fracture process. For the materials used in this work, the signal spectrum is between 100 Hz and 50 kHz, but the range between 10 kHz and 50 kHz is predominantly responsible for the interference components.
Manoel, Paulo Afonso Franzon. « Influência de parâmetros físicos e do processamento digital utilizado nos sinais oriundos do ensaio charpy instrumentado / ». Ilha Solteira, 2014. http://hdl.handle.net/11449/110505.
Texte intégralBanca: Adyles Arato Junior
Banca: Maria Cristina Adami Gatti
Resumo: Neste estudo foi avaliada a influência dos parâmetros físicos (rigidez do cutelo, comprimento do corpo de prova, geometria do cutelo) sobre a magnitude das interferências presentes nas curvas força vs tempo e força vs deslocamento, também foi estudado o efeito de diversos filtros sobre o sinal coletado. Foram empregados cutelos instrumentados (atuando como células de carga) de diferente rigidez e também um cutelo com geometria distinta em relação aos demais. Foram realizados ensaios com corpos de prova de comprimento iguais a 55m (em conformidade com a ASTM E-23), 70 mm e 85 mm. Os dados foram tratados com filtros digitais: passa-baixa, passa-alta, passa-faixa e média móvel, os espectros dos sinais filtrados foram comparados aos dos sinais originais. Os resultados indicaram que a rigidez do cutelo possui relação inversa com a magnitude das interferências, por outro lado o comprimento do corpo de prova possui relação direta com o aumento no nível de interferências, o cutelo com geometria diferenciada também exerceu influência sobre a curva força vs deslocamento. A média móvel mostrou-se promissor no tratamento dos dados, desde que seja utilizado um número reduzido de pontos, de modo a não eliminar componentes fundamentais do sinal de interesse. Para os casos analisados o espectro do sinal encontra-se entre 100 Hz e 50 kHz, no entanto a faixa entre 10 kHz e 50 kHz há predomínio das componentes responsáveis pelas interferências.
Abstract: In this work, was the influence of physical parameters evaluated (stiffness of the striker, length of the specimen, the geometry of the striker) on the magnitude of the interference present in the curves load vs. time and load vs. displacement, the effect of various filters on the signal obtained was also studied. In this study, instrumented strikers (like load cells) of different stiffness and were used a striker which has a different geometry than the others was also tested. Furthermore, the tests were conducted with specimens with length equal to 55 mm (according with ASTM E-23), 70 mm and 85 mm. The data were processed by these digital filters: low pass, high pass, band pass and moving average. The spectrums of the filtered signals were compared with the original ones. The results showed that the stiffness of the striker has an inverse relation with the magnitude of the interference. On the other hand, the length of the specimen has a direct relation with the increased level of interference, the striker with different geometry also exerted influence on the load vs displacement curve. The moving average filter has been a good way out in the treatment of data, but is necessary to use a limited number of points in order not to eliminate essential components of the signal which contains information about the deformation and fracture process. For the materials used in this work, the signal spectrum is between 100 Hz and 50 kHz, but the range between 10 kHz and 50 kHz is predominantly responsible for the interference components.
Mestre
Schenk, Heike. « Die digitale Privatkopie / ». Berlin : Logos-Verl, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2875289&prov=M&dok_var=1&dok_ext=htm.
Texte intégralJackson, Marcus. « Program för digitala prov : Och hur programmet möter kraven som ställs när det används i gymnasieskolan ». Thesis, Linköpings universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-151878.
Texte intégralLima, Ana Paula Barbosa de. « "Avaliação da alteração dimensional da base de prova permanente da prótese total de resina acrílica ativada termicamente, processada em forno microondas, por meio da imagem digital" ». Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/23/23137/tde-28082006-180810/.
Texte intégralThe 50 samples of pattern maxillary complete denture were processed, divided in 30 maxillary complete denture and 20 permanent proof base, to evaluated of dimensional changes in the permanent proof base with twice polymerization, process in microwave oven, to compare with the others two groups, the complete denture with conventional process and the complete denture with permanent proof base with twice polymerization in a conventional process. To evaluated this complete dentures they were divided in 5 groups: group I conventional complete denture; group II proof base conventional process; group III proof base in microwave process; group IV complete denture using the proof base of the group, with the conventional process and the group; group V complete denture using the proof base of the group III, microwave process. To evaluated this alteration used the scanner in the Post-dam, in this samples. After this proceding the image was putting in the Adobe Photoshop 8.0 program to determinate what region was evaluated. After this selection, the image access in the CorelTrace 11 program and transformed in black and white, and after to access in the CorelDraw 11 that was measured the region between the cast and the complete/permanent proof base, to allow the analysis of the values the dimensional alteration of the proof body, after the process. The results show: 1) The linear dimensional alteration the difference mean variation for the left, center and right sides, respectively, it was in decimal order or centesimal of millimeters, for the group IV and I (0,07; 0,08 and 0,09); and for the group V and I were (0,10; 0,32 and 0,25) and for the group V and IV (0,17; 0,24 and 0,16) and it cannot be considered clinically relevant to affect the prosthesis adjustment in the mouth, and promote the occurrence of more clinical disruptions; 2) The dimensional alterations in the areas (left and right side) of the proof bodies of the three groups I, II and IV were uniform, and the groups III and V werent homogeneous, but there is not a statically significant difference, about 5%, between the segment left and right areas; 3) The variation of the area index about five groups there is not a statically significant that couldnt use of the both method to build the complete denture. Although, more studies are important to realize with the objective to improve the use the microwave over to process the denture.
Sigge, Arne-Christian. « Digitale Softwaredokumentationen und Information-Retrieval ». Berlin Logos-Verl, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2757168&prov=M&dok_var=1&dok_ext=htm.
Texte intégralHarder, Jörn. « Digitale Universitätsbibliotheken aus urheberrechtlicher Sicht / ». Marburg : Tectum-Verl, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2997648&prov=M&dok_var=1&dok_ext=htm.
Texte intégralHell, Anna. « Digitala verktyg i undervisningen : En väg till förbättrad språkutveckling för flerspråkiga elever ». Thesis, Umeå universitet, Institutionen för tillämpad utbildningsvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-127202.
Texte intégralKuhn, Frank. « Elektronische Partizipation : digitale Möglichkeiten - Erklärungsfaktoren - Instrumente / ». Wiesbaden : VS, Verl. für Sozialwiss, 2006. http://deposit.ddb.de/cgi-bin/dokserv?id=2809224&prov=M&dok_var=1&dok_ext=htm.
Texte intégralKuhn, Frank. « Elektronische Partizipation digitale Möglichkeiten - Erklärungsfaktoren - Instrumente ». Wiesbaden VS, Verl. für Sozialwiss, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2809224&prov=M&dok_var=1&dok_ext=htm.
Texte intégralFanger, Reto. « Digitale Dokumente als Beweis im Zivilprozess ». Basel Genf München Helbing und Lichtenhahn, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2740604&prov=M&dok_var=1&dok_ext=htm.
Texte intégralMallmann, Jackson. « Produção de provas digitais a partir de rastreamento em relacionamento por e-mails / Jackson Mallman ; orientadora, Cinthia O de A. Freitas ; co-orientador, Altair Olivo Santin ». reponame:Biblioteca Digital de Teses e Dissertações da PUC_PR, 2011. http://www.biblioteca.pucpr.br/tede/tde_busca/arquivo.php?codArquivo=2389.
Texte intégralBibliografia: f. [101]-108
No uso da tecnologia e-mail podem ser cometidos crimes virtuais, e em caso de investigação judicial do crime, é necessária a produção de provas digitais. Aplicam-se métodos científicos para comprovação de autoria, e assim, formalização do nexo causal. Apr
The e-mail may be involved in a cybercrime and it is necessary find the digital forensic evidences. Methods and techniques are applied to provide the proofs of authorship, and thus formalizing the causal nexus. This work presents a mechanism to produce di
Coppolino, Francesco Saverio. « Prove di caratterizzazione meccanica della canna comune (Arundo Donax) in prospettiva di un uso strutturale sostenibile ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20173/.
Texte intégralRoppel, Carsten. « Grundlagen der digitalen Kommunikationstechnik Übertragungstechnik - Signalverarbeitung - Netze ; mit 42 Tabellen und 62 Beispielen ». München Wien Fachbuchverl. Leipzig im Carl-Hanser-Verl, 2006. http://deposit.ddb.de/cgi-bin/dokserv?id=2712979&prov=M&dok_var=1&dok_ext=htm.
Texte intégralFetscherin, Marc. « Implications of digital rights management on the demand for digital content ». Berlin dissertation.de, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?id=2852318&prov=M&dok_var=1&dok_ext=htm.
Texte intégralFetscherin, Marc. « Implications of digital rights management on the demand for digital content / ». Berlin : dissertation.de, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2852318&prov=M&dok_var=1&dok_ext=htm.
Texte intégralKannemann, Fabian. « Target costing für digitale Güter Zielkostenmanagement in der Internetökonomie ». Saarbrücken VDM, Müller, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?id=2883147&prov=M&dok_var=1&dok_ext=htm.
Texte intégralKannemann, Fabian. « Target costing für digitale Güter : Zielkostenmanagement in der Internetökonomie / ». Saarbrücken : VDM, Müller, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2883147&prov=M&dok_var=1&dok_ext=htm.
Texte intégralFliess, Thomas. « Ein Beitrag zum Entwurf digitaler Leitungssimulatoren / ». Dresden : TUDpress, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2671905&prov=M&dok_var=1&dok_ext=htm.
Texte intégralWawretschek, Bettina. « Urheberrechtsfragen der Presse im digitalen Zeitalter ». Berlin Logos-Verl, 2004. http://deposit.ddb.de/cgi-bin/dokserv?id=2686914&prov=M&dok_var=1&dok_ext=htm.
Texte intégralSilander, Sandra. « Användbarhetskrav för verktyg för att skapa digitala uppgifter och prov : En fallstudie på en svensk gymnasieskola av pedagogers upplevda användbarhet genom användarbarhetstester ». Thesis, Karlstads universitet, Handelshögskolan (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-82242.
Texte intégralBárány, Balázs. « Informationsverlust durch Digitalisierung Grundlagen und Konzepte zur Langzeitsicherung digitaler Informationen ». Saarbrücken VDM, Müller, 2004. http://deposit.ddb.de/cgi-bin/dokserv?id=2826865&prov=M&dok_var=1&dok_ext=htm.
Texte intégralZerres, Christopher. « Der Markt für digitale Güter in Deutschland Abgrenzungsansatz und Analyse ». München Mering Hampp, 2006. http://deposit.ddb.de/cgi-bin/dokserv?id=2754727&prov=M&dok_var=1&dok_ext=htm.
Texte intégralGraiff, Lorenzo. « Dispositivi protesici in Odontoiatria Digitale : dall'impronta digitale intraorale alla produzione con tecnologie Cad-Cam. Caratterizzazione in vitro della precisione di accoppiamento e delle proprietà meccaniche ». Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424453.
Texte intégralL’obiettivo di questo lavoro è studiare alcuni aspetti della moderna filiera produttiva digitale di manufatti protesici in campo dentale: dalla realizzazione dell’impronta ottica, direttamente nel cavo orale, alla finalizzazione del dispositivo protesico individualizzato per il paziente. La motivazione di questo studio risiede nell’esigenza sempre più sentita da parte di tutto il mondo dentale di ottimizzare e modernizzare i flussi di lavoro che sono ancora essenzialmente artigianali. Sfruttando le moderne tecnologie digitali, che si stanno rapidamente diffondendo in campo dentale, è possibile ottenere prodotti finiti di più alto standard qualitativo a fronte di costi di realizzazione più contenuti a condizione di diffondere ai clinici ed agli odontotecnici le conoscenze e le competenze necessarie all’utilizzo ottimale. In particolare sono stati presi in considerazione i seguenti temi di particolare rilevanza clinica: - la tecnologia di scansione ottica intraorale: sono state indagate le specificità operative e le prestazioni tecniche in particolare riferimento all’impiego per edentulie totali riabilitate mediante impianti, - i materiali ceramici innovativi, lavorabili mediante tecnologia Cad-Cam ed impiegati per realizzare protesi a ponte su denti naturali di tipo multilayer metalfree. E’ stato inoltre indagato un innovativo materiale in resina composita, anch’esso utilizzabile con tecnologia Cad-Cam ed impiegato per la realizzazione di corone singole su impianti. La revisione della letteratura tecnico scientifica, ha suggerito gli obbiettivi e gli aspetti metrologici del programma di ricerca sperimentale da condurre. Le indagini hanno riguardato aspetti di precisione ed accuratezza della lettura ottica della posizione degli impianti, di precisione geometrica di accoppiamento di protesi multilayer metal free, di resistenza meccanica di diversi tipologie di materiali e di adesione tra un recente composito a matrice resinosa, denominato Resin Nano-Ceramic (RNC) e zirconia; hanno previsto l’introduzione di strumenti e metodi consolidati in campo tecnico-scientifico, adatti a caratterizzare i processi di fabbricazione utilizzati, i materiali impiegati e i dispositivi realizzati. Più in dettaglio, l’attività ha riguardato: 1. lo studio, in termini di prestazioni metrologiche, del processo di acquisizione effettuato mediante il sistema di scansione True Definition Scanner su un campione clinico riproducente un'arcata completamente edentula riabilitata con 6 impianti; 2. la verifica della precisione geometrica di accoppiamento delle componenti, sotto e sovrastruttura, di protesi metalfree multilayer realizzate con materiali ceramici diversi (zirconia-disilicato di litio) prodotte mediante tecnologia Cad-Cam, e assemblate da due operatori diversi; l’assemblaggio/unione delle componenti, dei singoli ponti, viene invece realizzato manualmente dall’odontotecnico con tecnica totalmente artigianale; 3. l’analisi del comportamento meccanico, statico, delle protesi metalfree multilayer, citate al punto 2, confrontate con un altro tipo di protesi multilayer (provenienti dagli stessi progetti Cad) ma costituite da zirconia e ceramica feldspatica (RLT), 4. l’analisi mediante prova meccanica, statica e a fatica, della resistenza di un innovativo materiale in resina composita fornito in blocchetti per lavorazione Cad-Cam: Lava Ultimate. Questo nuovo materiale composito presenta, rispetto ad altri materiali estetici quanto a proprietà meccaniche dichiarate, (modulo di Young), un comportamento più simili al dente naturale. In quest’ottica, è stato utilizzato per realizzare corone singole su impianti, confrontando due modalità diverse di impiego: cementando una corona realizzata con questo composito e prodotta con tecnologia Cad-Cam direttamente su un pilastro standard in titanio fornito dall’industria, o realizzando con lavorazione Cad-Cam una sottostruttura in zirconia individualizzata e cementando su quest’ultima la corona in composito; 5. la verifica delle capacità adesive tra zirconia e Lava Ultimate, utilizzando due diversi cementi resinosi mediante test di taglio. Sulla base dei risultati delle campagne sperimentali condotte in questo studio è possibile affermare che: 1 le tecnologie di impronta ottica digitale intraorale sono in grado di rispondere ai requisiti clinici di precisione anche nel caso di arcate complete riabilitate su impianti, 2. le protesi multilayer metalfree, realizzate con tecnologia Cad-Cam secondo i requisiti di precisione propri dal workflow digitale, risentono dell’intervento di assemblaggio finale che esegue l’odontotecnico, con conseguente riduzione delle qualità di precisione stabilite in fase progettuale, 3. i ponti multilayer metalfreee presentano valori di resistenza alla frattura superiori o uguali ai valori minimi riportatati dalla letteratura scientifica 4. le corone su impianti realizzate con l’innovativo materiale composito, sottoposto a prove di resistenza statica e a fatica, quando cementate su un moncone individualizzato in zirconia, hanno caratteristiche meccaniche superiori alla soluzione più economica, che prevede la cementazione della corona direttamente ad un pilastro standardizzato in titanio. 5. l’utilizzo di cementi adesivi per cementare Lava Ultimate su zirconia, ha permesso di evidenziare comportamenti opposti per quanto riguarda le forze di adesione misurate con il test di taglio.
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Texte intégralZillien, Nicole. « Digitale Ungleichheit : neue Technologien und alte Ungleichheiten in der Informations- und Wissensgesellschaft / ». Wiesbaden VS, Verl. für Sozialwiss, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2877794&prov=M&dok_var=1&dok_ext=htm.
Texte intégralKocher, Mela. « Folge dem Pixel-Kaninchen ! Ästhetik und Narrativität digitaler Spiele ». Zürich Chronos, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2816560&prov=M&dok_var=1&dok_ext=htm.
Texte intégralBerndt, Holger. « Analyse und Anwendung stochastischer Quantisierungsprinzipien in Analog/Digital-Wandlern / ». Dresden : TUDpress, Verl. der Wiss, 2008. http://deposit.d-nb.de/cgi-bin/dokserv?id=3082083&prov=M&dok_var=1&dok_ext=htm.
Texte intégralPereira, Leonardo Viana. « Estudo da densidade óptica e da resistência à flexão de três pontos em corpos-de-prova fundidos com a liga metálica High Bond (Co-Cr), com secções vertical 90°, diagonal 45° e diagonal 22,5°, soldados pelas técnicas convencional e TIG / ». Araçatuba, 2012. http://hdl.handle.net/11449/97402.
Texte intégralBanca: Marco Polo Marchese
Banca: Gilberto Aparecido Coclete
Resumo: O sucesso das próteses sobreimplantes está diretamente relacionado ao grau de adaptação dos componentes protéticos aos implantes. Com a finalidade de se obter um assentamento passivo entre a prótese e os implantes, as estruturas metálicas são confeccionadas inicialmente segmentadas e, posteriormente, soldadas clinicamente para minimizar as distorções do processo de fundição. O sistema TIG (Tungsten Inert Gas) é definido como uma soldagem de arco elétrico, estabelecido entre um eletrodo não consumível à base de tungstênio e a peça a ser soldada. O propósito desse estudo foi, através do uso da densidade óptica e de um teste mecânico de resistência à flexão de 3 pontos, analisando a rigidez do material e a tensão de flexão, verificar o comportamento de dois sistemas de soldas odontológicas: convencional e TIG, realizadas em diferentes angulações (90°, 45° e 22,5°) de secções das porções a serem soldadas, comparando-os a um grupo fundido em monobloco (controle), em uma liga de Co-Cr. Os grupos foram comparados entre si quanto à densidade óptica, rigidez, tensão de flexão. A análise dos resultados obtidos possibilitou as seguintes conclusões: 1. Em relação à análise dos dados da densidade óptica mostrou que o grupo controle apresentou-se mais eficientes, estatisticamente significantes, quando comparadas aos grupos do sistema de solda TIG; não houve diferenças estatisticamente significantes entre as diferentes angulações num mesmo sistema de soldagem, porém quando comparados os sistemas de soldagem numa mesma angulação, o grupo de 22,5°-solda convencional teve resultado melhor, estatisticamente significante, que o 22,5°-solda TIG; 2. Em relação à rigidez (modulo de elasticidade), houve diferença estatisticamente significante apenas quando se comparou os corpos com angulação de 90° com diferentes soldas, tendo resultados maiores com ...
Abstract: The success of the prosthesis over implant is directly related to the adaptation degree of the prosthesis components to implants. Aiming to obtain a passive fit between the prosthesis and the implant, initially the metal structures are segmented and later are clinically welded to minimize the distortions of the casting process. The TIG system (Tungsten Inert Gas) is defined as a welding of an electric arc, established between a non consumable electrode based on tungsten and the part to be welded. The purpose of this study was to use the optical density and a mechanical test of 3 points flexion endurance, to analyze the stiffness of the material and the bending stress and to verify the behavior of two systems of dental welders: conventional and TIG performed at different angles (90º, 45º e 22, 5º) of the sections of the portions to be welded, and compare them to a group fused on monobloc (control) in an alloy of Co-Cr. The groups were compared on optical density, stiffness and bending stress. Analysis of the results made possible the following conclusions: 1. The analysis of the data showed that the optical density of the control group was more efficient, statistically significant, when compared to the groups with TIG welding system; there were no statistical differences between the different angles on the same welding system, although when comparing the welding systems in the same angle, the group of 22,5º- conventional welding had better result than the 22,5º - TIG welding, this difference was statistically significant; 2. There was statistical significant difference regarding the stiffness (modulus of elasticity) only when it was compared the bodies with the 90º angle with different welds, the higher results were with the conventional welding; 3. The results of the...
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