Dissertations / Theses: 'Digital root'

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Saidi, Ali. "Root contours of low-order two-dimensional system functions." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/13722.

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Ono, Evelise. "Avaliação de reabsorções radiculares externas por meio de reconstrução digital de imagens e subtração radiográfica digital /." São José dos Campos, 2008. http://hdl.handle.net/11449/105869.

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Orientador: Edmundo Medici Filho Banca: Edmundo Medici Filho Banca: Horacio Faig leite Banca: Elisa Emi tanaka Carloto Banca: Sandra Maria Nobre David Banca: Julio Cezar de Melo Castilho Resumo: Diante dos prejuízos que a reabsorção severa da raiz pode acarretar, e considerando a técnica de subtração radiográfica digital (SDR) importante recurso para detecção precoce de alterações minerais, propõe-se neste estudo avaliar a eficiência de um programa de computador, que execute o registro das imagens e SRD, no diagnóstico da reabsorção radicular externa simulada, comparado à radiografia digital, além da concordância intra e interexaminadores nos 2 métodos de diagnóstico. Os 49 dentes de mandíbulas humanas maceradas com reabsorções de diferentes dimensões, simuladas na região apical e lingual, foram radiografados com variação de ângulos de projeção. A radiografias foram registradas a posteriori pelo programa Regeemy® e subtraídas pelo programa Image Tool®. A quantidade de ruído estrutural nas imagens subtraídas foi obtida pela mensuração da média e desvio-padrão dos níveis de cinza. Para avaliação do desempenho dos métodos de diagnóstico, pares de radiografias periapicais e imagens subtraídas foram apresentadas a 3 radiologistas. De acordo com os resultados, o ruído das imagens subtraídas de radiografias após variações de 10º e 20º do ângulo vertical e 10º horizontal e corrigidas a posteriori, foi significantemente maior que das imagens subtraídas de radiografias padrão, independente da região radiografada. Não houve diferença estatisticamente significativa entre os métodos na detecção de reabsorções apicais, independentemente do tamanho da lesão, assim como não houve diferença entre os métodos na detecção de reabsorções linguais de 1,2 mm ou mais. A SRD foi significantemente superior à radiografia digital para detecção de lesões linguais de cerca de 1 mm. Cavidades na superfície lingual de cerca de 0,5 mm não foram detectadas com precisão por nenhum dos métodos... (Resumo completo, clicar acesso eletrônico abaixo) Abstract: Because of the harm that severe root resorption may cause and considering the digital subtraction technique (DSR) as an important tool for early detection of mineral alterations, the aims on the present study are to assess the efficiency of a computer software for image registration and DSR on the diagnosis of simulated root resorption, to compare their results with those obtained with digital radiographs, and to assess the intra- and inter-examiner agreement using the two methods of diagnosis. Forty nine teeth with simulated lingual and apical root resorptions of varied extension were x-rayed with different projection angles. The radiographs were registered a posteriori with Regeemy® software and subtracted with Image Tool® software. The amount of structural noise of the subtracted images was evaluated by measuring the mean and standard-deviation of their gray levels. The performance of each method of diagnosis was assessed by submitting pairs of periapical radiographs and the subtracted images to the evaluation of three oral radiologists. According to the results, the structural noise of subtracted images from radiographs with variations of 10º and 20º of vertical angle and 10º of horizontal angle was significantly higher than the obtained from the radiographs without angular variation, independently from the anatomic region of the image. There was no statistically significant difference between the methods on the detection of apical root resorptions independently from the size of the lesion as well as no statistically significant difference was found between the methods on the detection of lingual resorptions of 1.2mm or more. DSR was significantly superior to the digital radiographs on the detection of lingual lesions of around 1mm. Lingual lesions of around 0.5mm were not precisely detected by any of the methods. The inter- and intra-examiner agreements were substantial... (Complete abstract, click electronic access below) Doutor

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Cokley, John D., and n/a. "The Application of in situ Digital Networks to News Reporting and Delivery." Griffith University. School of Arts, Media and Culture, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060731.174040.

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The development of digital networks has allowed the largest news media organisations to consolidate and centralise their publishing businesses in flourishing capital-city markets. This has resulted in a withdrawal from other less-viable markets, especially those which are geographically remote, and the subsequent emergence of the 'digital divide' with its attendant negative effects. This thesis proposes that the combination of technologies, theories and processes which has brought about the 'digital divide' can now be realigned to reverse those negative effects, and to enhance the possibility of focussed participatory communication taking place within and between those previously less-viable markets. This enhanced participatory communication - which I have named 'integrated journalism' - brings with it measurable and positive effects, generally known as community capacity building effects, which lead to better outcomes for the members of enhanced communities, a more innovative and flourishing approach to life and business, and a more innovative and forward-looking atmosphere within enhanced communities. Two new models are devised and presented: the first allows members of audience communities to learn and implement the process of publishing a community newspaper under the tuition of an experienced journalist; the second enables both journalists and audience members to measure and direct the effects of news publication within communities.

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Nicholas, Joshua, and n/a. "Hollywood 2.0: Digital Audio-Visual Production as a Rhizomic Process." Griffith University. School of Arts, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060906.093359.

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This exegesis explores the notions of production process paradigm shift through the analysis of digital technologies and their effect on the production of 'CruelUnusual'. Chapter one of this exegesis has introduced the research question with appropriate methodologies to explore the rhizomic possibilities of the use of new digital technology (DV, WWW & DVD) through the design of new structures and frameworks for audio-visual production. Chapter two will outline the traditional production process from the first steps of the pre-production phase, through to the shooting and editing of the film, to its final delivery on the screen. Chapter three will outline various new technologies to be explored and evaluated to assess their benefits to filmmakers in the creation of new production process paradigms. Chapter four of this exegesis presents an evaluation of the Rhizomic Production Process as a viable alternative to the traditional linear produc-tion process. The research data created during the production of the creative project is offered to sup-port arguments presented regarding the benefits of the Rhizomic Production Process. Chapter five will discuss the conclusions and implications discovered during the evalua-tion of the Rhizomic Production Process through the production of the creative project and suggest further possible directions.

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Hacker, Charles Hilton, and n/a. "WinLogiLab - A Computer-Based Teaching Suite for Digital Logic Design." Griffith University. School of Engineering, 2001. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050915.172404.

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This thesis presents an interactive computerised teaching suite developed for the design of combinatorial and sequential logic circuits. This suite fills a perceived gap in the currently available computer-based teaching software for digital logic design. Several existing digital logic educational software are available, however these existing programs were found to be unsuitable for our use in providing alternative mode subject delivery. This prompted the development of a Microsoft Windows TM tutorial suite, called WinLogiLab. WinLogiLab comprises of a set of tutorials that uses student provided input data, to perform the initial design steps for digital Combinatorial and Sequential logic circuits. The combinatorial tutorials are designed to show the link between Boolean Algebra and Digital Logic circuits, and follows the initial design steps: from Boolean algebra, truth tables, to Exact and the Heuristic minimisation techniques, to finally produce the combinatorial circuit. Similarly, the sequential tutorials can design simple State Machine Counters, and can model more complex Finite State Automata.

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Bieniosek, Matthew (Matthew F. ). "A square root analog to digital converter to optimally convert photonic signals for computed tomography." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62309.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010. This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. Cataloged from student-submitted PDF version of thesis. Includes bibliographical references (p. 81-82). The arrival of photons at a given location is a Poisson process with an associated shot noise which rises with the square root of the number of photons received. An analog-to-digital converter (ADC) with a square root transfer function can quantize photonic signals with LSB size kept constant with respect to the photon shot noise. In imaging applications, this can greatly reduce the number of bits needed to characterize a signal compared to a linear ADC without detrimental effects to image quality. Such a device, based on the Analogic MuSIC chip, was designed and tested for the needs of a medical computed tomography (CT) device. The experimental setup increases the MuSIC sampling frequency from 3kHz to 7kHz, while reducing the amount of data necessary for reconstruction. A constant quantization noise to photon shot noise ratio acceptable for CT is maintained by sizing each LSB to be one half the rms noise level. Results show an INL of 2.5 LSB, which is reduced to 0.27 LSB after a correction scheme. by Matthew Bieniosek. M.Eng.

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Babiker, Sahar Malik. "Hard tissue features associated with the presence of impacted mandibular third molars." University of the Western Cape, 2016. http://hdl.handle.net/11394/5604.

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>Magister Scientiae - MSc Different pathology associated with impacted wisdom teeth in the oral cavity showed that it is prevalent and may lead to varied dental complications. This study adopted a descriptive cross-sectional retrospective analytical design in order to examine hard tissue features associated with the presence of impacted third molars in a random sample of 2998 digital panoramic radiographs (DPRs) of patients' records in Tygerberg Oral Health Centre, Faculty of Dentistry, University of Western Cape. The specific objectives of the study were to categorize the type of impactions in the DPRs of patients and to determine the prevalence of distal cervical caries (DCC) in second molars, any radiolucent (RL) /radiopaque (RO) lesions or external root resorption (ERR) complications associated with impacted wisdom teeth. Results of the pantomographs and clinical records of patients indicated that the most prevalent type of impaction (TOI) is Mesioangular (MA) Impaction (65%) followed by Horizontal (H) Impaction (17%), Vertical (V) Impaction (15%), Transverse (TVS) Impaction (2 %) and Distoangular (DA) Impaction (1.2 %), respectively. The least prevalent type was Inverted (INV) Impaction with a frequency count of 0.5%. The results further indicated varied dental complications resulting from impaction, ranging from ERR with a frequency of 3% of which 66.70% was associated with MA type of impaction, followed by H with a frequency of 26.7%. The association of Gender and RL/ RO lesions was significant (p-value=0.04) while association between DCC and types of impaction was also significant (p-value =0.0017). The study concluded that the high prevalence of MA among all populations and genders over the years may be related to the anatomical normal inclination of the third molars to the mesial surface. The low prevalence of DA observed in the study sample on the other hand might be attributable to gender and demographic factors. Lastly, this study has only one radiopaque lesion and the high prevalence of RL lesions in males and in the older age group suggests that these complications take a while to develop. Future research is needed to raise more awareness and encourage patients to seek treatment of symptomatic and asymptomatic third molars before complications arise.

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Oliveira, Simone Helena Gonçalves de [UNESP]. "Estudo in vivo e in vitro da incidência de bifurcação do canal radicular de incisivos inferiores pelo método radiográfico digital direto." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/132189.

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Made available in DSpace on 2015-12-10T14:24:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2002. Added 1 bitstream(s) on 2015-12-10T14:30:41Z : No. of bitstreams: 1 000183138.pdf: 3546568 bytes, checksum: b8086168504f1d987c48cb7ff6b2b100 (MD5) A morfologia da raiz dos incisivos inferiores possui um sulco longitudinal mesial e distal que pode condicionar a bifurcação de seu canal radicular. A proposta neste trabalho é estudar in vivo e in vitro a incidência de bifurcação do canal radicular dos incisivos inferiores com a utilização do radiovisiography. No estudo in vivo analisamos quatrocentos dentes, sendo realizadas radiovisiografias ortorradiais da região de incisivos e da região de caninos, onde visualizamos os incisivos com desvio de 20° distalmente. No estudo in vitro foram utilizados duzentos incisivos inferiores posicionados em um modelo, simulando o arco dental inferior, sendo radiovisiografados no sentido vestíbulo-lingual e posteriormente no sentido mésio-distal. As radiovisiografias foram visualizadas no monitor do aparelho onde analisamos a presença de canal único, canal bifurcado e canal com características indicativas de bifurcação, que correspondem à diminuição da radiolucidez cérvico-apical e à presença de linhas radiolúcidas dispostas longitudinalmente à raiz. Os resultados mostraram que 17,5% dos dentes do estudo in vivo e 15% dos dentes do estudo in vitro, que foram radiovisiografados no sentido vestíbulo-lingual, apresentaram bifurcação ou indicativos de bifurcação. No estudo in vitro, no sentido mésio-distal, encontramos 20% de bifurcação. Concluímos que a utilização da técnica de distalização do feixe de raios-X permite detectar grande percentagem dos casos de canais radiculares bifurcados ou com indicativos de bifurcação dos incisivos inferiores com a utilização do radiovisiography The morphology of the root of the inferior incisors have a longitudinal, meslal and distal furrow that can condition the bifurcation of its root canal. The objetive of this work is to study in vivo and in vitro the incidence of the bifurcation of the root canal of the inferior incisors using radiovisiography. On the in vivo study, four hundred teeth were analyzed and orthoradial radiovisiographles of the incisors region and canines region were done where incisors with a 20º distal deviation could be seen. On the in vitro study, two hundred inferior incisors were used positioned in a mould, simulating the inferior dental arch and were radiovisiographed on the bucco-lingual direction and later, on the mesio-distal direction. The raradiovisiographies were visualized on the device monitor where the presence of an only canal, a bifurcated canal and a canal with bifurcation characteristics were analyzed. They correspond to the decrease in radiolucity and to the presence of radiolucidity lines disposed longitudinally to the root. The results show that 17,5% of the teeth on the in vivo study and 15% of the teeth on the in vitro study that were radiovisiographed on the bucco-lingual direction presented bifurcation or signs of bifurcation. On the in vitro study, on the mesiodistal direction, we found 20% of bifurcation. We can conclude that the use of the dislalization of the X-rays shaft technique allows us to delect a great percentage of cases of bifurcated root canals or cases with signs of bifurcation of the inferior incisors with the use of radiovisiography

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Oliveira, Simone Helena Gonçalves de. "Estudo in vivo e in vitro da incidência de bifurcação do canal radicular de incisivos inferiores pelo método radiográfico digital direto /." São José dos Campos, 2002. http://hdl.handle.net/11449/132189.

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Orientador: Luiz Cesar de Moraes Banca: Mônica Campos Serra Banca: Emiko Saito Arita Banca: Horácio Faig Leite Banca: Julio Cezar de Melo Castilho Resumo: A morfologia da raiz dos incisivos inferiores possui um sulco longitudinal mesial e distal que pode condicionar a bifurcação de seu canal radicular. A proposta neste trabalho é estudar in vivo e in vitro a incidência de bifurcação do canal radicular dos incisivos inferiores com a utilização do radiovisiography. No estudo in vivo analisamos quatrocentos dentes, sendo realizadas radiovisiografias ortorradiais da região de incisivos e da região de caninos, onde visualizamos os incisivos com desvio de 20° distalmente. No estudo in vitro foram utilizados duzentos incisivos inferiores posicionados em um modelo, simulando o arco dental inferior, sendo radiovisiografados no sentido vestíbulo-lingual e posteriormente no sentido mésio-distal. As radiovisiografias foram visualizadas no monitor do aparelho onde analisamos a presença de canal único, canal bifurcado e canal com características indicativas de bifurcação, que correspondem à diminuição da radiolucidez cérvico-apical e à presença de linhas radiolúcidas dispostas longitudinalmente à raiz. Os resultados mostraram que 17,5% dos dentes do estudo in vivo e 15% dos dentes do estudo in vitro, que foram radiovisiografados no sentido vestíbulo-lingual, apresentaram bifurcação ou indicativos de bifurcação. No estudo in vitro, no sentido mésio-distal, encontramos 20% de bifurcação. Concluímos que a utilização da técnica de distalização do feixe de raios-X permite detectar grande percentagem dos casos de canais radiculares bifurcados ou com indicativos de bifurcação dos incisivos inferiores com a utilização do radiovisiography Abstract: The morphology of the root of the inferior incisors have a longitudinal, meslal and distal furrow that can condition the bifurcation of its root canal. The objetive of this work is to study in vivo and in vitro the incidence of the bifurcation of the root canal of the inferior incisors using radiovisiography. On the in vivo study, four hundred teeth were analyzed and orthoradial radiovisiographles of the incisors region and canines region were done where incisors with a 20º distal deviation could be seen. On the in vitro study, two hundred inferior incisors were used positioned in a mould, simulating the inferior dental arch and were radiovisiographed on the bucco-lingual direction and later, on the mesio-distal direction. The raradiovisiographies were visualized on the device monitor where the presence of an only canal, a bifurcated canal and a canal with bifurcation characteristics were analyzed. They correspond to the decrease in radiolucity and to the presence of radiolucidity lines disposed longitudinally to the root. The results show that 17,5% of the teeth on the in vivo study and 15% of the teeth on the in vitro study that were radiovisiographed on the bucco-lingual direction presented bifurcation or signs of bifurcation. On the in vitro study, on the mesiodistal direction, we found 20% of bifurcation. We can conclude that the use of the dislalization of the X-rays shaft technique allows us to delect a great percentage of cases of bifurcated root canals or cases with signs of bifurcation of the inferior incisors with the use of radiovisiography Doutor

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Silveira, Priscila Fernanda da. "Capacidade diagnóstica da radiografia digital na avalição de reabsorções radiculares internas simuladas com desmineralização ácida." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/149701.

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Introdução: As reabsorções radiculares internas (RRI) são lesões de prognóstico difícil e o seu diagnóstico é baseado, principalmente, em exames de imagem. Tanto lesões pequenas quanto perfurações em lesões extensas são situações críticas e um desafio para o diagnóstico. As poucas pesquisas que investigaram a detecção de RRI e de perfurações causadas pelas mesmas, simularam as lesões com uso de brocas, criando cavidades com forma e limites definidos diferentes da realidade clínica. Assim, o objetivo deste estudo foi avaliar a capacidade diagnóstica das radiografias digitais, com diferentes filtros, em duas situações clínicas: na detecção de RRI pequenas; e na visualização das paredes dentinárias remanescentes e na detecção de perfurações em RRI simuladas, com desmineralização ácida. Materiais e métodos: Foram simuladas lesões de RRI com desmineralização ácida nos condutos radiculares de 42 dentes monorradiculares, seccionados no sentido coronal, reposicionados e colocados em alvéolos de uma mandíbula seca. Radiografias digitais com placas de fósforo (Vista Scan - Dürr Dental, Germany) com dissociação foram realizadas, em momentos diferentes para os objetivos, Obj.1: antes (GC) e após (GT) a simulação de RRI pequenas; Obj.2: após a simulação de lesões extensas com remanescente de parede dentinária (GC) e com perfuração da parede lateral da raiz (GT). Todas as imagens foram exportadas e 7 filtros de processamento foram aplicados para a análise mais a imagem original (sem filtro). Três examinadores utilizando uma escala Likert de 5 pontos avaliaram as imagens quanto: Obj.1, a presença/ausência de RRI; Obj.2, a presença/ausência de perfuração. O índice Kappa intra e inter-examinadores foi calculado para avaliar a reprodutibilidade. Testes de diagnóstico e AcROC foram calculados para cada grupo (GT e GC) e para cada filtro de imagem. A distância do escore determinado na escala até o valor do padrão-ouro foi utilizado para mensurar a certeza/incerteza no diagnóstico. Equações de Estimação Generalizadas (GEE) foram utilizadas para a análise estatística, com significância de 0,05%. Resultados: Valores moderados de Kappa-inter (0,403-0,620) e altos de intra-examinadores (0,757-0,915) foram observados. Para Obj.1: Maior percentual de acertos ocorreu no GC, significativamente (p<0,05). Imagens originais apresentaram maior sensibilidade e AcROC (0,595-0,750) e o filtro Endo apresentou maior especificidade (0,952), em relação às demais imagens, sem diferença estatística entre elas (p>0,05). Os filtros Inversion e Pseudo3D causaram maior incerteza no diagnóstico das RRI, estatisticamente significante para o GC com o filtro Pseudo3D (p<0,05). Para Obj.2: Imagens com o filtro Pseudo3D resultaram em mais escores de dúvida (73,5-78%), e maiores distâncias do padrão ouro, gerando maior incerteza no diagnóstico, significativamente (p<0,05), em relação aos demais filtros. Maior acROC (0,615) foi relacionada ao filtro Perio, sem diferença estatística (p>0,05). Maiores distâncias, refletindo maiores incertezas nos diagnósticos, foram observadas no GC para todos as imagens. O percentual de acerto foi menor conforme diminuiu a espessura da parede remanescente, com 31% de acerto para as espessuras de 0,2mm. Conclusões: Paras as lesões de RRI pequenas: os filtros Inversion e Pseudo3D são contraindicados, pois geram muit incertezas aumentando a probabilidade de erros de diagnóstico. Em casos de dúvida, a imagem sem filtro (Original) deve ser buscada, pois apresenta maior capacidade diagnóstica e permite maior certeza na avaliação. Para as lesões de RRI extensas, com suspeita de perfuração: o filtro Pseudo3D deve ser evitado pois gera maior incerteza no diagnóstico e filtro Perio deve ser incentivado, pois facilita a avaliação, aumentando as chances de diagnósticos corretos. Deve-se ter em mente que nos casos diagnosticados como perfuração, ainda pode existir uma camada de parede dentinária remanescente. Introduction: Internal root resorption (RRI) are difficult to predict injuries and its diagnosis is mainly based on imaging studies. Both minor injuries as punctures in extensive lesions are critical situations and a challenge for diagnosis. The few studies that investigated the detection of RRI and punctures caused by them, simulated lesions with use of drills, creating cavities with different shape and defined limits of clinical reality. The objective of this study was to evaluate the diagnostic ability of digital radiographs with different filters in two clinical situations: small RRI detection; and in view of the remaining dentin walls and to detect perforations in RRI simulated with acid demineralization. Methods: RRI injuries were simulated with acid demineralization in root canals of 42 teeth monoradicular, sectioned coronally repositioned and placed in wells of a dry jaw. digital radiographs with phosphor plates (Vista Scan - Dürr Dental, Germany) and dissociation were taken at different times for the purposes, Aim 1: Before (CG=control group) and after (TG=test group) simulating small RRI; Aim 2: after simulation with extensive lesions reminiscent of dentinal wall (CG) and perforation on the lateral wall of the root (GT). All images were exported and 7 processing filters were applied to the analysis over the original image (no filter). Three examiners using a 5-point Likert scale images evaluated as Aim 1, the presence / absence of RRI; Aim 2, the presence / absence of perforation. The Kappa intra and inter-examiner was calculated to assess reproducibility. Diagnostic tests and AcROC were calculated for each group (CG and TG) and for each image filter. The distance determined score on the scale to the value of the gold standard was used to measure the certainty / uncertainty in diagnosis. Generalized Estimating Equations (GEE) were used for statistical analysis with significance level of 0.05%. Results: moderate values of Kappa-inter (0.403 to 0.620) and high intra-rater (0.757 to 0.915) were observed. For objective 1: A higher percentage of hits occurred in the GC, significantly (p <0.05). Original images showed higher sensitivity and AcROC (0.595 to 0.750) and Endo filter showed higher specificity (0.952), compared to other images, with no statistical difference between them (p> 0.05). The filter Inversion and Pseudo3D caused greater uncertainty in the diagnosis of RRI statistically significant GC with the filter Pseudo3D (p <0.05). For the purpose of 2: Images with the filter Pseudo3D resulted in more scores of doubt (from 73.5 to 78%), and greater distances from the gold standard, leading to greater uncertainty in the diagnosis, significantly (p <0.05) compared to other filters. Most acROC (0.615) was related to the filter Perio, with no statistical difference (p> 0.05). Greater distances, reflecting greater uncertainty in diagnosis were observed in the control group for all the images. The hit percentage was lower as decreased the thickness of the remaining wall, with 31% accuracy for thickness of 0.2 mm. Conclusions: Paras small lesions RRI: Inversion and the Pseudo3D filters are contraindicated because they generate too many uncertainties increasing the probability of misdiagnosis. In cases of doubt, the image without filter (Original) must be sought, because it has greater diagnostic capacity and allow greater certainty in the assessment. the extensive RRI injuries, suspected of drilling: the Pseudo3D filter should be avoided because it creates greater uncertainty in the diagnosis and filter Perio should be encouraged as it facilitates the evaluation, increasing the chances of correct diagnoses. It should be borne in mind that in cases diagnosed as drilling, there may still be a remaining dentin wall layer.

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Fracassi, Larissa Dantas. "Avaliação da qualidade de diferentes técnicas de obturação endodôntica, por meio de imagens radiográficas digitais." Programa de Pós- Graduação em Odontologia da UFBA, 2008. http://www.repositorio.ufba.br/ri/handle/ri/11032.

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74f. Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-04-23T18:21:10Z No. of bitstreams: 1 Dissertacao Larissa Fracassi.pdf: 6519939 bytes, checksum: 9eeadec9b07cfebaf5709b26dcc856ea (MD5) Approved for entry into archive by Rodrigo Meirelles(rodrigomei@ufba.br) on 2013-05-16T18:05:05Z (GMT) No. of bitstreams: 1 Dissertacao Larissa Fracassi.pdf: 6519939 bytes, checksum: 9eeadec9b07cfebaf5709b26dcc856ea (MD5) Made available in DSpace on 2013-05-16T18:05:05Z (GMT). No. of bitstreams: 1 Dissertacao Larissa Fracassi.pdf: 6519939 bytes, checksum: 9eeadec9b07cfebaf5709b26dcc856ea (MD5) Previous issue date: 2008 A busca por uma obturação mais hermética resultou na criação de diferentes técnicas de obturação. Clinicamente a qualidade da obturação é averiguada principalmente pela avaliação radiográfica em projeção vestíbulo-lingual. Este estudo se propõe a avaliar as técnicas de obturação endodôntica Thermafil, Condensação Lateral e Híbrida de Tagger quanto à sua aparência radiográfica e capacidade de selamento apical. Setenta raízes de incisivos centrais superiores humanos foram instrumentadas e posteriormente realizou-se a aquisição de radiografias convencionais, imagens digitalizadas e digitais em projeção mesiodistal (MD) e vestíbulo-lingual (VL). Em seguida, sessenta raízes foram obturadas pelas técnicas Thermafil (20), Condensação Lateral (20) e Híbrida de Tagger (20) e novamente radiografadas. A qualidade da obturação foi avaliada pela análise visual nas três modalidades de imagem, onde o examinador buscou detectar a presença de espaços vazios nos três terços radiculares. Verificou-se ainda a radiopacidade da obturação através da média dos níveis de cinza e sua homogeneidade pelo coeficiente de variação dos níveis de cinza. Para avaliação do selamento apical as raízes foram imersas em solução de Azul de Metileno a 2% por sete dias. Os resultados na análise visual mostraram que a técnica Híbrida de Tagger apresentou menor número de espaços vazios, comparada às duas outras técnicas. Observou-se também um maior número de espaços vazios na obturação, na projeção radiográfica mesio-distal. Na análise quantitativa houve aumento dos níveis de cinza e uma redução do coeficiente de variação dos níveis de cinza após a obturação pelas três técnicas. Houve maior acréscimo percentual dos níveis de cinza e redução percentual do coeficiente de variação dos níveis de cinza após a obturação pela técnica Híbrida de Tagger comparada às duas outras técnicas. A técnica da Condensação Lateral apresentou maior infiltração apical, estatisticamente significativa (p<0,05). Pode-se concluir que a técnica Híbrida de Tagger apresentou melhores resultados radiográficos e selamento apical superior, estatisticamente significante, comparada à Condensação Lateral. Salvador

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Fletcher, Gordon Scott, and n/a. "The Cultural Significance of Web-Based Exchange Practices." Griffith University. School of Arts, Media and Culture, 2006. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20070118.090425.

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This thesis considers the cultural significance of Web-based exchange practices among the participants in contemporary western mainstream culture. The thesis argues that analysis of these practices shows how this culture is consumption oriented, event-driven and media obsessed. Initially, this argument is developed from a critical, hermeneutic, relativist and interpretive assessment that draws upon the works of authors such as Baudrillard and De Bord and other critiques of contemporary 'digital culture'. The empirical part of the thesis then examines the array of popular search terms used on the World Wide Web over a period of 16 months from September 2001 to February 2003. Taxanomic classification of these search terms reveals the limited range of virtual and physical artefacts that are sought by the users of Web search engines. While nineteen hundred individual artefacts occur in the array of search terms, these can classified into a relatively small group of higher order categories. Critical analysis of these higher order categories reveals six cultural traits that predominant in the apparently wide array of search terms; freeness, participation, do-it-yourself/customisation, anonymity/privacy, perversion and information richness. The these argues that these traits are part of a cultural complex that directly reflects the underlying motivations of contemporary western mainstream culture. The daily practices of Web-based search and exchange thus reproduce and reinforce this cultural complex. The empirical work of the thesis validates the critical assessment of western mainstream culture developed in the initial chapters of the thesis.

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Chavez, Janet Elizabeth Romero La Fuente. "Avaliação da reabsorção radicular externa em dentes tratados endodonticamente após tratamento ortodôntico por meio de análise comparativa de métodos radiográficos." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/23/23145/tde-17062009-163016/.

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Esta pesquisa teve por objetivo avaliar a reabsorção radicular externa em dentes tratados endodonticamente após tratamento ortodôntico, por meio de análise das imagens das radiografias panorâmica final digitalizada, convencional periapical digitalizada e digital direta, como também comparar os métodos radiográficos empregados. Foram selecionados, após uma avaliação de 2.130 documentações ortodônticas 20 dentes de pacientes com documentação ortodôntica completa, boas condições de saúde, faixa etária entre 25 a 50 anos de ambos os sexos e com dentes anteriores (incisivo central ou lateral) tratados endodonticamente antes da realização do tratamento ortodôntico. De cada documentação ortodôntica completa foi selecionada a radiografia panorâmica inicial e final e, posteriormente, foram obtidas duas radiografias periapicais atuais de cada dente, uma pela técnica convencional e outra digital direta. Após a obtenção e identificação das radiografias, as imagens da panorâmica final digitalizada, radiografia periapical convencional digitalizada e digital direta foram analisadas na tela do computador por três especialistas (endodontista, ortodontista e radiologista). Estes avaliaram se a reabsorção radicular externa estava presente ou ausente no dente tratado endodonticamente após tratamento ortodôntico, bem como compararam os métodos empregados verificando sua confiabilidade. Os seguintes parâmetros foram observados: a) lesão periapical, b) espaço pericementário e c) limite do tratamento endodôntico. As observações foram submetidas à análise estatística chegando-se às seguintes conclusões: 1) A maioria dos ortodontistas não utiliza radiografias periapicais para avaliar os dentes tratados endodonticamente antes do tratamento ortodôntico, o que pode comprometer o andamento e o resultado final do tratamento, visto que a reabsorção radicular não apresenta um caráter sintomatológico no seu diagnóstico; 2) Quanto à reabsorção radicular externa, os examinadores apontaram que houve um incremento desta, na maioria do tipo suave e localizada na região apical, e que a radiografia digital direta foi o método radiográfico mais eficiente na determinação deste diagnóstico. In this research, the assessment of the external root resorption was carried out in endodontically treated teeth after orthodontic treatment, through the analysis of the image of the digital panoramic radiography, the digital periapical conventional and direct digital; as well as the employed methods were comparatively appraised. It was selected, after an evaluation of 2,130 orthodontic records from two centres of orthodontic studies, 20 teeth of patients with complete orthodontic records, good health conditions, age group between 25 and 50 years-old of both sexes and with front teeth (central or lateral incisor) endodontically treated before the accomplishment of the orthodontic treatment. An initial and final panoramic radiography were selected from each orthodontic record, and, later two current radiographies were obtained from each patient, one by conventional technique and the other by direct digital. After the obtaining and identification of the radiographies, the images of the digital panoramic of the digital conventional and of the direct digital were analyzed on the computer screen by three experts (an endodontist, an orthodontist and a radiologist) who evaluated whether the external root resorption was present or absent in the endodontically treated tooth after the orthodontic treatment and comparatively assessed the employed methods, verifying their reliability; they also observed the following parameters: a) periapical lesion, b) pericemental space, and c) limits of the endodontical treatment. The observations were submitted to a statistical analysis, reaching the following conclusions: 1) most of the orthodontists don\'t use periapical radiographies to evaluate endodontically treated teeth. Before the orthodontic treatment, what can compromise its course and its final results, once the root resorption doesn\'t present a symptomatology in its diagnosis; 2) as for the external root resorption, examiners claimed that there was an increment in it, most in the soft type and located in the apical area, and that the evaluation of the effectiveness of the resorption diagnosis, as well as of the other appraised parameters, indicated that the direct digital radiography obtained better outcomes regarding its identification and its classification.

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Maruyama, Teruo Matos. "AVALIAÇÃO DE COMPRIMENTO E DIÂMETRO RADICULAR DO MILHO POR TÉCNICAS DE PROCESSAMENTO DIGITAL DE IMAGENS." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2016. http://tede2.uepg.br/jspui/handle/prefix/139.

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Made available in DSpace on 2017-07-21T14:19:28Z (GMT). No. of bitstreams: 1 Teruo Matos.pdf: 2738201 bytes, checksum: 54ed354d6ee1a18f2c735e38746cafc8 (MD5) Previous issue date: 2016-09-30 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior The study of roots is used to monitor and optimize the uptake of water and nutrients. The evaluation of the plant root system by traditional methods is slow, exhaustive, complex and in many cases does not provide the required accuracy. This research aimed to develop a computational method to assist in the assessing of the average diameter and length of root maize. It was developed using Java programming language, JavaCV interface, and OpenCV library, subsequently its accuracy was compared to the traditional methods and the macro IJ_Rhizo accuracy, for measuring the average diameter and length of roots. The tests were performed using images of maize roots with 300 dpi and using images of nylon threads with resolutions of 300 dpi and 600 dpi. The method validation was performed using nylon thread samples with known lengths and diameters. For length measurements, the proposed method obtained coefficients of variation from 0.05% to 3.80% and 0.06% to 9,27%, with 300 dpi and 600 dpi images, respectively. For diameter measurements, the proposed method obtained coefficients of variation from 0.23% to 77.49% and 0.54% to 96,61%, with 300 dpi and 600 dpi images, respectively. The proposed method obtained coefficients of variation lower than traditional methods for length and diameter measurements, and the macro IJ_Rhizo in more than 95% of test cases. Thus, the presented method is shown to be the most appropriate, and with greater accuracy for measurement of average diameter and length of root, among the assessed methods. O estudo de raízes é usado para monitorar e otimizar a utilização de água e nutrientes pelas plantas. A avaliação do sistema radicular de plantas por meio dos métodos tradicionais é demorada, exaustiva, complexa e, em muitos casos, não fornece a acurácia necessária. Este trabalho teve como objetivo desenvolver um método computacional que auxiliasse na avaliação do diâmetro médio e comprimento radicular da cultura de milho. Ele foi desenvolvido utilizando a linguagem de programação Java, a interface JavaCV, e a biblioteca OpenCV, posteriormente a acurácia dele foi comparado a dos métodos tradicionais e a da macro IJ_Rhizo, para medição do comprimento e do diâmetro médio de raízes. Os testes foram realizados utilizando imagens de raízes de milho com 300 dpi e imagens de fios de náilon com 300 dpi e 600 dpi. A validação do método foi realizada utilizando amostras de fios de náilon com comprimento e diâmetros conhecidos. Para as medidas de comprimento, o método proposto obteve coeficientes de variação de 0,05% a 3,80% e de 0,06% a 9,27%, com imagens de 300 dpi e 600 dpi, respectivamente. Para as medidas de diâmetro, o método proposto obteve coeficientes de variação de 0,23% a 77,49% e de 0,54% a 96,61% , com imagens de 300 e 600 dpi, respectivamente. O método proposto obteve coeficientes de variação inferiores aos métodos tradicionais para a medição do comprimento e do diâmetro, e a macro IJ_Rhizo em mais de 95% dos casos de teste. Assim, o método apresentado mostra-se o mais adequado e o com maior acurácia para a medição do comprimento e diâmetro radicular médio dentre os métodos avaliados.

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Rosa, Rogério Hadid. "Efeitos dos lasers de diodo de alta e baixa potência no processo de reparo de reabsorções radiculares após reimplante tardio: análise clínica e radiográfica em ratos." Universidade de Taubaté, 2012. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=408.

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Objetivo: Avaliar clínica e radiograficamente os efeitos da irradiação com laser de diodo de alta potência e de baixa potência em dentes de ratos, reimplantados tardiamente. Método: Foram utilizados incisivos direitos de cinquenta ratos (Wistar) com peso entre 250 a 350g. Os dentes foram extraídos, permanecendo em meio ambiente durante 60min. Em seguida, realizou-se a remoção da polpa, bem como o preparo químico-cirúrgico e o preenchimento dos canais radiculares com pasta de hidróxido de cálcio. Após a extração, os espécimes foram divididos aleatoriamente em cinco grupos (n = 10). G1 e G2 foram os controles (sem tratamento para reparação periodontal) e nesses grupos foram realizados, respectivamente, o reimplante imediato e o reimplante tardio (sessenta minutos após a extração). G3, G4 e G5 receberam tratamento para reparação antes do reimplante tardio: G3 condicionamento das superfícies radiculares com laser de diodo de alta potência (810nm, modo contínuo, fibra óptica de 600μm, 1,5W, 30s); G4 condicionamento da superfície radicular com laser de diodo de baixa potência no alvéolo (780nm, 40mW por um minuto) e na superfície radicular (660nm, 30mW por três minutos) e G5 associação do laser de alta potência e de baixa nos mesmos parâmetros dos grupos 3 e 4. Após sessenta dias do reimplante, os animais foram anestesiados para análise clínica e, posteriormente eutanasiados para preparo das peças e análise por meio de radiografias digitais das reabsorções radiculares encontradas nos grupos. Resultados: os melhores resultados quanto à análise clínica foram observados respectivamente de forma decrescente em: G1=G3>G4>G2>G5; e quanto a análise radiográfica os melhores resultados ocorreram em G1,G3 e G5 respectivamente. Conclusão: a utilização do laser de alta potência associado ou não ao laser de baixa promoveu a diminuição da ocorrência de reabsorções externas quando comparada aos grupos isentos de tratamento de superfície radicular, e o laser de baixa potência, isoladamente, não favoreceu o controle das reabsorções radiculares. Study hypothesis: The external root resorptions control and the peridontal ligaments regeneration when using the high and low laser power in associate or not in case of delayed reimplant in rats. Objective of the study : Evaluate clinically and radiographically the radiation effects using diodo laser with high and low power in the rats teeth those had delayed reimplant. Methodology: We used incisors rights from fifty rats (Wistar) with weight between 250 a 350g. The teeth were extracted and remained in the environment during 60min. After this, the extraction, the surgical chemical preparation and the filling of root conducts were made with calcium hydroxide paste. Then, the animals were divided randomly in five groups (n=10). G1 and G2 were the controls ( those didnt have treatmet for peridontal repair) and in those groups were realized respectively the immediate reimplant and the delayed reimplant (sixty minutes after the extraction). G3, G4 and G5 had received treatment for reparation before the delayed reimplant; G3- The root surfaces conditioning using diodo high power(810nm,continuos mode, optical fiber 600μm, 1.5W, 30s);G4 The root surface conditioning using diodo low power in alveolar wounds(780nm, 40mW during one minute) and in the root surface (660nm, 30mW during three minutes). G5 - the association with the high and low power in the same way that in the groups 3 and 4. After sixty days, the animals were anesthezied for clinical analisys, and euthanized in order to prepare the parts and to analyse throught the digital x-rays the root resorptions those were found in both groups. Results: The best results about clinical analysis were obtained respectively in decreasing order in G1=G3>G4>G2>G5; and about the radiography analysis the best results occurred in G1,G3 e G5 respectively. Conclusion: The high laser power utilization in association or not with low laser power promoted the decreasing of root resorptions when it compared with the groups that didnt have the same treatment, and the low laser power when was used alone it didnt result in the root resorptions control.

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Ley, Paul J. "An in-vitro comparison of working length determination between a digital system and conventional film when source-film/sensor distance and exposure time are modified." Connect to resource online, 2009. http://hdl.handle.net/1805/1928.

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Thesis (M.S.D.)--Indiana University School of Dentistry, 2009. Title from PDF t.p. (viewed Aug. 11, 2009) Advisors: Mychel Vail, Chair of the Research Committee, Susan Zunt, Ted Parks, Kenneth Sponik, Joseph Legan. Curriculum vitae. Includes abstract. Includes bibliographical references (leaves 103-119).

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Becker, Vera Antonia. "The root causes of the gender digital divide and its consequences on the adoption and use of app-based climate warning systems in rural India." Thesis, Uppsala universitet, Teologiska institutionen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-424344.

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In the wake of climate change to provide timely information is a must to ensure that the most vulnerable people are protected, and development gains secured. Particularly in agriculture and food security, providing information on time is vital to secure people’s livelihoods. Many actors in the development and humanitarian field have therefor adapted seemingly neutral technologies in their programs to ensure localised and timely information. However, passive technologies are actively implemented into intersecting local power dynamics. Gender among race, class, ethnicity and caste is an essential determinant of the access to power and resources. In India, women contribute up to 80 per cent of the work in rural settings if accounting for care work and unpaid labour on the family farm. However, women are also significantly less likely to own and operate a smartphone or generally benefit from the digitalisation process as they lack digital skills. This study explores the root causes of this disadvantage, detangling economic and social drivers through qualitative expert interviews. Primarily, it investigates the importance of social norms as the main driver. The interviews were analysed through thematic coding with the program Atlas.ti. The results strongly indicated that gender norms lead to the minimisation of women’s contributions in the rural economy while reverting their existences to their reproductive functions. Economic barriers, such as economic dependency, meanwhile can be primarily attributed to strict social norms rather than being own determents of inequality. The financial dependency then again leads to structural imbalances which consequentially solidifies already existing marginalisation’s. While India in recent decades has not needed mayor humanitarian interventions, the learnings from this study are equally applicable in the humanitarian setting as technology important. Technology is not neutral or passively adapted. Only when interventions combine their work with gender-sensitivity measures, it can reach the ones most in need. On the other hand, if programs lack to consider these implications, their programs the interventions are not gender-neutral but solidified inequalities and power imbalances. In the last sections, I, therefore, provided recommendations on how to make a technology-based intervention more gender-inclusive. These recommendations are easily adaptable and applicable to other fields of intervention.

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Christensen, Shane R. "An in vitro comparison of working length accuracy between a digital system and conventional film when vertical angulation of the object is variable." Connect to resource online, 2009. http://hdl.handle.net/1805/1926.

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Thesis (M.S.D.)--Indiana University School of Dentistry, 2009. Title from PDF t. p. (viewed Aug. 21, 2009) Advisor(s): Mychel Vail, Acting Chair of the Research Committee, Joseph Legan, Kenneth Spolnik, Susan L. Zunt, Edwin Parks. Curriculum vitae. Includes abstract. Includes bibliographical references (leaves 109-120).

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Rebele, Stephan F. [Verfasser], and Markus [Akademischer Betreuer] Hürzeler. "Tunnel technique with connective tissue graft versus coronally advanced flap with enamel matrix derivative for root coverage : a randomized controlled clinical trial using 3D digital measuring methods." Freiburg : Universität, 2015. http://d-nb.info/1119805813/34.

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Teixeira, Everton Felix. "Análise de imagens digitais na avaliação de plântulas de milho." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-25042005-155848/.

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A análise de imagens digitais tem grande potencial de uso na determinação do vigor de sementes. Associada ao teste de crescimento de plântulas, essa técnica possibilita a análise dimensional de imagens com rapidez e precisão. O resultado é a extensão total de cada plântula via quantificação computadorizada do comprimento de suas partes constituintes. Assim, o objetivo do trabalho foi estudar o vigor de lotes de sementes de milho, por meio do teste de crescimento de plântulas, utilizando-se a análise de imagens. Plântulas de milho (genótipo AG122) foram retiradas do germinador ao quarto dia de desenvolvimento e ordenadas sobre uma folha de poliéster transparente na superfície de um scanner para a captação das imagens. Desenvolveu-se uma rotina de processamento no programa Scil-Image para a análise das imagens digitais obtidas das plântulas. Houve medição computadorizada da extensão total, com a soma usual do comprimento do coleóptilo ao comprimento da maior raiz da plântula e, também, não usualmente, ao tamanho de todo sistema radicular. As plântulas foram mensuradas manualmente, visando a comparação com o método em estudo. Os resultados mostraram que a técnica digital possibilita a associação dos dados obtidos no processamento a eventuais diferenças de vigor existentes em lotes de sementes de milho, de maneira similar a outros métodos destinados à avaliação do vigor de sementes da referida espécie. The image analysis has high potential use in seed vigor determination. Associated to the seedlings growing test, this technique is fast, precise and makes possible the dimensional image analysis. The result is the total extension of each seedling quantifying the length of their constituent parts. With the purpose of studying the corn seed lots vigor through the seedlings growing test, using the digital images analysis, the corn seedlings (AG122 genotype) were taken from the germination chamber at the fourth day of development and ordered over a sheet, made with a transparent polyester film, on a scanner surface to the images capture. A routine was developed to process digital images of seedlings into the Scil-Image software. There was a computational procedure to measure the total length, with the usual sum of coleoptile to the main root length of seedling and also, not usually, to all root system. The seedlings were measured manually, seeking comparison with the method in study. The results showed that the digital technique makes possible association of the data obtained in processing to eventual vigor differences existing in corn seed lots, in a similar way to the other methods appointed to seed vigor evaluation by referred species.

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Frisell, Marcus. "Information visualization of microservice architecture relations and system monitoring : A case study on the microservices of a digital rights management company - an observability perspective." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233463.

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90% of the data that exists today has been created over the last two years only. Part of the data space is created and collected by machines, sending logs of internal measurements to be analyzed and used to evaluate service incidents. However, efficiently comprehending datasets requires more than just access to data, as Richard Hamming puts it; "The purpose of computing is insight, not numbers." A tool to simplify apprehension of complex datasets is information visualization, which works by transforming layers of information into a visual medium, enabling the human perception to quickly extract valuable information and recognise patterns. This was an experimental design-oriented research study, set out to explore if an information visualization of microservice architecture relations combined with system health data could help developers at a Swedish digital rights management company (DRMC) to find root cause incidents, increase observability and decision support, i.e. simplifying the incident handling process. To explore this, a prototype was developed and user tests consisting of a set of tasks as well as a semi-structured interview was executed by ten developers at DRMC. The results concluded that the proposed solution provided a welcomed overview of service health and dependencies but that it lacked the ability to effectively focus on certain services, essentially making it difficult to find root causes. Visualizations like this seems to be best suited for overview-, rather than focused, comprehension. Further research could be conducted on how to efficiently render large complex datasets while maintaining focus and how to account for external factors. 90% av alla data som finns idag har skapats under de senaste två åren. En del av datautrymmet skapas och samlas in av maskiner som genererar loggar innehållandes interna systemmätningar för att utvärdera felaktiga tjänster. För att effektivt förstå ett dataset krävs mer än bara tillgång till data, som Rickard Hamming har sagt; “Syftet med datoranvändning är insikt, inte siffror.” Ett verktyg för att förenkla ens uppfattning av komplexa dataset är informationsvisualisering. Det fungerar genom att transformera lager av information till ett visuellt medium, och på så sätt tillåta mänsklig perception att snabbt extrahera värdefull information och utläsa mönster. Det här var en experimentell, design-orienterad, forskningsstudie med syftet att utforska ifall en informationsvisualisering av mikrotjänsters relationer kombinerat med system-hälso-data kunde hjälpa utvecklare på ett svenskt förvaltningsföretag av digitala rättigheter (DRMC) att hitta grundorsaken till felaktiga mikrotjänster samt utöka observerbarhet och beslutstöd, d.v.s. förenkla felhanteringsprocessen. För att utforska detta problem så utvecklades en prototyp som testades genom att låta tio utvecklare på DRMC utföra ett antal olika uppgifter samt svara på en semi-strukturerad intervju. Resultatet visade på att den föreslagna lösningen möjliggjorde en välkommen överblick över systemets hälsa och relationer, men också att den saknade möjligheten att effektivt fokusera på specifika tjänster, vilket ledde till att grundorsaksproblem var svåra att hitta. Visualiseringar som denna verkar fungera bäst för att presentera en överblick av ett system, snarare än ett fokus på specifika tjänster. Framtida forskning skulle kunna utföras för att utreda hur visualiseringar effektivt kan återge komplexa dataset utan att förlora fokus på specifika delar, samt hur externa faktorer kan integreras.

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Junqueira, Rafael Binato. "Avaliação da acurácia da tomografia computadorizada de feixe cônico na detecção de fraturas radiculares verticais em dentes com núcleo metálico fundido." Universidade Federal de Juiz de Fora, 2013. https://repositorio.ufjf.br/jspui/handle/ufjf/985.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-03-21T13:18:07Z No. of bitstreams: 1 rafaelbinatojunqueira.pdf: 3138866 bytes, checksum: 0ad9fc0b6e140d0a267c6e92dbbec5fa (MD5) Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-04-24T02:11:04Z (GMT) No. of bitstreams: 1 rafaelbinatojunqueira.pdf: 3138866 bytes, checksum: 0ad9fc0b6e140d0a267c6e92dbbec5fa (MD5) Made available in DSpace on 2016-04-24T02:11:04Z (GMT). No. of bitstreams: 1 rafaelbinatojunqueira.pdf: 3138866 bytes, checksum: 0ad9fc0b6e140d0a267c6e92dbbec5fa (MD5) Previous issue date: 2013-01-14 CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior O diagnóstico de fraturas radiculares verticais constitui um desafio para o cirurgiãodentista, e sua detecção precoce dependerá da busca de sinais clínicos e radiográficos. Os exames complementares são fundamentais neste processo, destacando-se a radiografia periapical e a tomografia computadorizada de feixe cônico (TCFC). Entretanto, em dentes tratados endodonticamente e que possuem núcleo metálico, a avaliação da imagem tomográfica pode ser prejudicada pela formação de artefatos. O presente estudo avaliou a acurácia da tomografia computadorizada de feixe cônico na detecção de fraturas radiculares verticais em dentes com núcleo metálico fundido. Dezoito dentes humanos monorradiculares foram tratados endodonticamante e preparados para núcleo metálico fundido, sendo submetidos à fratura radicular vertical in vitro, recobertos com cera e posicionados em alvéolos de mandíbulas secas. Toda a amostra foi submetida duas vezes (com e sem núcleo) à radiografia periapical digital pela técnica de Clark e a exames de TCFC com dois voxels: 0,125 mm e 0,25 mm. As imagens foram avaliadas por três radiologistas e os resultados submetidos à análise estatística. Foram calculados os índices de sensibilidade, especificidade, preditivo positivo e preditivo negativo, além das áreas sob as curvas ROC (acurácia). As acurácias dos exames foram comparadas pelo teste qui-quadrado, não havendo diferença significativa (p≥0,05). A comparação entre os dentes com e sem núcleo em cada exame, pelo teste exato de Fischer, revelou diferença significativa para a TCFC com voxel de 0,125 e para a radiografia periapical (p<0,05). As imagens com voxel de 0,125 tiveram maior acurácia nos dentes sem núcleo, porém, sem diferença significativa. Concluiu-se que a radiografia periapical digital, com variação da angulação horizontal, deve ser o primeiro exame complementar realizado para a investigação de fraturas radiculares verticais. Caso este método seja inconclusivo, a TCFC mostra-se como alternativa eficaz nos dentes sem núcleo metálico. The diagnosis of vertical root fractures is a challenge to dentists, and early detection will depend on the search of clinical and radiographic signs. Complementary exams are very important in this process, highlighting periapical radiography and cone beam computed tomography (CBCT). However, in endodontically treated and with metallic post teeth, the evaluation of tomographic image can be worse due to artifacts. The present study evaluated the accuracy of CBCT in detection of vertical root fractures in teeth with metallic cast post. Eighteen monorradicular human teeth were endodontically treated and prepared to metallic post. They were subjected to fractures in vitro, recovered with wax and inserted in dry human skulls. The sample was submitted twice (with and without metallic post) to periapical radiography and CBCT (2 voxels: 0,125mm e 0,25 mm).The images were analyzed by three radiologists and the results were submitted to statistical analysis. Sensibility, specificity, positive predictive and negative predictive values were calculated, beyond the areas under ROC curves (accuracy). The accuracy of the exams were compared by chi-squared test, showing no significant differences (p≥0,05). The comparisons between teeth with and without metallic posts in each exam, by Fischer exact test, revealed significant difference to CBCT voxel 0,125 and periapical radiography (p<0,05). The images of CBCT voxel 0,125 were more accurate in teeth without metallic post, although with no significance. It was concluded that periapical digital radiography, with variation of the horizontal angle, should be the first supplementary exam held for investigation of vertical root fractures. If this method is inconclusive, CBTC shows up an effective alternative in teeth without metallic post.

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Thompson, Grant. "Effects of DEM resolution on GIS-based solar radiation model output: A comparison with the National Solar Radiation Database." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1258663688.

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Lang, Ian William, and n/a. "Conditional Truths: Remapping Paths To Documentary 'Independence'." Griffith University. Queensland College of Art, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20031112.105737.

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(Synopsis to introductory statement): An introductory statement to five documentary films made by Ian Lang in Australia between 1981 and 1997 exemplifying a 'democratising' model of sustainable and ethical documentary film production. This document critically reflects on the production process of these films to accompany their submission for the degree of Doctor of Philosophy by Publication at Griffith University. It finds that a contemporary tendency towards 'post-industrial' conditions allows an observational film-maker to negotiate a critical inter-dependence rather than a romantically conceived 'independence' traditional to the genre. [Full thesis consists of introductory statement plus six DVD videodiscs.]

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ESTEKI, SHAMILA. "Digital Room of Onsori." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1010348.

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The Digital room of Onsori is a special digital library with a collection of digital objects about his works and his poems that can include text, visual material, audio material and video material stored as electronic media formats. Nowadays the libraries and the archives are bursting with huge volumes of data, and the problem is to offer this data to their users in a faster and more organized manner. With the digital room of Onsori, I would try to actualize a specialized digital library (in my broader field and in my professional capacity) to help make the research process easier for the researchers while organizing data about a definite and determinate subject. This will allow us to respond to today’s necessity: velocity and facility. Thus, both researchers and people who are just curious about a specific topic can have quick and easy access to information relevant to their research. Onsori is a panegyrist poet of the seventeenth and eleventh centuries (X / XI), who is at the beginning of Persian literature. he is one of the first poets to have a Divan (a type of poetic collection in which the poems have a particular style) and many poets were his pupils and in the following periods, many other poets were influenced by his style. With Onsori the typology of qaside, started by Rudaki, is brought to perfection. Unfortunately, it has not been studied as much as it would have deserved. This fusion of ancient Persian literature and new technologies will allow and perhaps even encourage people to discover this rich literary culture. Thanks to the collaboration of the Persian Ministry of Cultural Heritage, this project will be the first initiative in a series of digital libraries (for the “Big Twenty”1 of 1 Mowlavi (Rumi) (1207-1273 AD), Ferdowsi (940-1020 AD), Hafez (1325-1389 AD), Khayyám (1048-1131 AD), Saadi (1210-1291 AD), Nizami (1141-1209 AD), Rudaki (858-941 AD), Attar (1145-1220 AD), Amir Khusrow (1253-1325 AD), Khaqani (1121-1190 AD), Sanai (1080-1141 AD), Nasir Khusraw (1004-1088 AD), Anvari (1126–1189 AD), Farrukhi Sistani (961-1037 AD), Manuchehri (965-1040 AD), Fakhr-al-Din Iraqi (1213-1289 AD), Baba Tahir (1024-1093), Khwaju Kermani (1280-1352 AD), Sanaie (1080-1131 AD) and Onsori (963-1039 AD). 4 Persian literature, and for this reason the project is called 20 DLs) on other important and famous Persian poets that will have to be created in the future within this collaboration. We collected data for the digital library in Iran, like to digitize manuscripts or some documents relating to this poet. We agreed with the libraries for copyright issues giving us permission to use the data available for the “Digital Room of Onsori”. Some of our criteria for the “Digital Room of Onsori”: - Content Richness - User-Friendliness - Reliability - Freshness - Quality-of-Service Requirements - Free Content - Having The Collection of Manuscripts - Having Open Data - Multimedia Rich - The Possibility for connection to the other digital libraries On the usage-related side, we will consider the popularity of scenarios and digital objects, the correctness of scenario models, the usability of services, and the educational potential of resources. Finally, we hope to connect this research with the development of curriculum materials that will be helpful for teaching and learning about digital libraries.

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Stadin, Andreas, and la Vaux Oskar de. "Digital twin of crane robot." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44848.

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The creation of digital twins has been on a rise in the last years, and digital twins are becoming an essential part in today's industries. To be able to keep up, the engineering students at Högskolan i Halmstad need to follow and explore the current development. The goal with this project is to introduce digital twins to the students and give them a wider knowledge about the future of manufacturing.In this project a digital twin was developed from a physical crane. The digital twin was made from a CAD model and was imported into a simulator to replicate the physical robot and its parts. The digital twin had virtual sensors installed and may be considered a cyber-physical system. På senare år har skapandet och användandet av digitala tvillingar ökat drastiskt och de håller på att implementeras i dagens industrier. För att ingenjör studenterna på Högskolan i Halmstad skall hänga med i utvecklingen av dagens tekniska samhälle, behöver de vara med och utforska de tekniska nyheter som finns. Målet med detta projekt är att introducera digitala tvillingar till ingenjör studenterna, för att ge dem en bredare grundkunskap inom framtidens industrier.I detta projekt har en digital tvilling utvecklats utifrån att efterlikna en fysisk kran. Utvecklingen av den digitala tvillingen har designats som en CAD-modell och importerats in i en simulator för att efterlikna den fysiska kranen och dess delar. På den digitala tvillingen har även virtuella sensorer installerats och systemet kan anses vara ett cyber-physical system.

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Wistort, Ryan Mark. "TofuDraw : choreographing robot behavior through Digital Painting." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62085.

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Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2010. Cataloged from PDF version of thesis. Includes bibliographical references (p. 97-99). In this document, TofuDraw is introduced as an expressive robotic character with interfaces that enable children to choreograph robotic behaviors through controlling both physical motion and form. Unique to the TofuDraw system is the presented "Digital Painting" interface, which enables children to choreograph the motion and form of an expressive robot through coloring a digitally projected surface using the affordances of painting. Additional interfaces are also presented, which enable children to control the robotic character in a realtime fashion using more traditional video game inspired control. Using these interfaces, the TofuDraw system intends to animate expressive robotic characters serving as transitional objects that allow children to explore a ́microworld where theater is the primary language. Evaluations of the TofuDraw system with children ages 3-8 suggest that children can incorporate the presented expressive robotic characters into their fantasy play patterns and control the expressive robot's behavior through numerous control interfaces designed to choreograph both form and motion. Ryan Mark Wistort. S.M.

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Murphy, Damian Thomas. "Digital waveguide mesh topologies in room acoustics modelling." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313846.

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Pietrzak, Carl Martin. "A digital radio modem for the Mobile Robot Project." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/111560.

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Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985. MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING by Carl Martin Pietrzak, Jr. B.S.

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Rosén, Carl-Johan. "Bricoleur, digitala varelser och brus." Thesis, Konstfack, Institutionen för Konst (K), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-3313.

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Bricoleur, digitala varelser och brus utgör tre viktiga noder, runt vilka mitt konstnärliga arbete rör sig. Parallellt med ett antal av mina verk beskrivs dessa begrepp kortfattat. Bricoleur, digital beings and noise are three important nodes, making up cornerstones of my artistic work. These ideas are explained briefly parallel to a selection of my artworks.

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Nilsson, Fredrik. "Balanserande robot." Thesis, Linköping University, Department of Electrical Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19742.

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Denna rapport behandlar utveckling av en tvåhjulig balanserande robot. En PID-regulator är implementerad i en mikrokontroller, som även AD-omvandlar en sensorsignal, samt styr motorer via H-bryggor med pulsbreddsmodulering. I rapporten förklaras framtagning av diskret PID-regulator, processorkort, motorkort, val av komponenter och sensor för att mäta robotens vinkel mot ett vertikalplan.Roboten kan balansera stillastående, men behöver kompletteras ytterligare med hjulåterkoppling för att kunna balansera medan den kör. Roboten balanserar med mätdata från en mekanisk golvavkännare (potentiometer). Andra sorters sensorer diskuteras också, t ex accelerometer, gyro och optisk sensor. This report explain the development of a two wheel balancing robot. A PID-regulator is implemented in a microcontroller, which also AD-converts a sensor signal, and generate pulse width modulated signals to drive H-bridges. It is discussed how to develop a discretisized PID regulator, microcontroller and H-bridge circuit boards, as well as how to chose components and suitable sensors for measuring the robots angle against a vertical plane.The robot is able to balance on its own when standing still, but it need to have feedback from its wheel position if it should be able to maintain balancing when moving. The robot use a mechanical floor feeler (potentiometer). Other sensors are also discussed, e g accelerometer, rate gyro and optical sensor.

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Campos, Antonio Guilherme Rocha. "Three-dimensional digital waveguide mesh modelling for room acoustic simulation." Thesis, University of York, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423754.

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Steinberg, Addison Michal. "The Digital Dressing Room: Millennial Consumers Perception of Mobile Retailing." Thesis, The University of Arizona, 2013. http://hdl.handle.net/10150/297787.

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This paper explores consumer’s shopping experience using an innovative technology of a digital dressing room. In a focus group, consumers were exposed to and shared their opinions about the new shopping app called VIZL, which was evaluated based on the dimensions of visual information, social interaction, and customization. Analyses of the focus group data suggest that mobile shopping using VIZL is vastly different from the tangible or online shopping experience. Specifically, the level of customization with the app is better in comparison with in-store shopping. The quality of social interaction was superior when compared with online. Lastly, the visual information the app portrays is weak in contrast with online shopping.

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Feder, Frank. "Cataloguing and editing Coptic Biblical texts in an online database system." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-201570.

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The Göttingen Virtual Manuscript Room (VMR); The Göttingen Virtual Manuscript Room (VMR) offers both an online based digital repository for Coptic Biblical manuscripts (ideally, high resolution images of every manuscript page, all metadata etc.) and a digital edition of their texts, finally even a critical edition of every biblical book of the Coptic Old Testament based on all available manuscripts. All text data will also be transferred into XML and linguistically annotated. In this way the VMR offers a full physical description of each manuscript and, at the same time, a full edition of its text and language data. Of course, the VMR can be used for manuscripts and texts other than Coptic too.

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Haglund, Linus, and Jarik Bulakvo. "I-Robot : Konfigurationsmöjligheter för robotrådgivare." Thesis, Uppsala universitet, Företagsekonomiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-357863.

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Robotrådgivare har presenterat ett nytt sätt att hjälpa privatpersoner med investeringar. Istället för att ta hjälp av en mänsklig kapitalrådgivare, krävs ett par knapptryck på en dator för att få den investeringshjälp som behövs. Robotrådgivare har trots sina fördelar inte fått ett genomslag på marknaden. Orsaken till detta är låg kundupplevelse. Dagens forskning visar att konfigurationer av variabler som mål, värderingar, transparens, tid, risk och teknologi kan öka kundupplevelsen. För att undersöka om dessa variabler kan implementeras i praktiken, har en kvalitativ studie utförts bestående av sex intervjuer med företrädare från tre stora och tre små aktörer på den svenska robotrådgivningsmarknaden. Resultaten visar att vissa variabler anses vara viktigare än andra beroende på aktörernas marknadsställning. För stora aktörer är variablerna transparens, risk och tid i fokus. För små aktörer är variablerna teknologi, mål och värderingar i fokus.

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Luo, Gang. "Development of a Digital Desk for Power Plant Control Room Operators." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-62353.

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Multi-touch technology and digital tabletops have been used in different fields. They provide a natural way of interaction with computers through gestures. In this report, we present a digital desk for power plant control rooms aimed at visualizing the power grid status. The thesis reports about the development of this desk that comprised field studies, use cases and requirements identification, low fidelity prototyping, and software development. A final evaluation of the design indicated that digital tabletops can be valuable for control room operators since they can enhance learning and communication among the collaborating operators. The work was done at ABB Corporate Research in Sweden.

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O'Neill, George Clifford. "Development of a digital stereo-vision system for robot 3D tracking." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30011.pdf.

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Bainbridge, Christopher James. "Digital control networks for virtual creatures." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4812.

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Robot control systems evolved with genetic algorithms traditionally take the form of floating-point neural network models. This thesis proposes that digital control systems, such as quantised neural networks and logical networks, may also be used for the task of robot control. The inspiration for this is the observation that the dynamics of discrete networks may contain cyclic attractors which generate rhythmic behaviour, and that rhythmic behaviour underlies the central pattern generators which drive lowlevel motor activity in the biological world. To investigate this a series of experiments were carried out in a simulated physically realistic 3D world. The performance of evolved controllers was evaluated on two well known control tasks—pole balancing, and locomotion of evolved morphologies. The performance of evolved digital controllers was compared to evolved floating-point neural networks. The results show that the digital implementations are competitive with floating-point designs on both of the benchmark problems. In addition, the first reported evolution from scratch of a biped walker is presented, demonstrating that when all parameters are left open to evolutionary optimisation complex behaviour can result from simple components.

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Shrestha, Roshi. "A physiological and genetic mapping study of tolerance to root-knot nematode in rice." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=24807.

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Parra, Tsunekawa Sebastián Isao. "Diseño e Implementación de Sistemas de Control para Robots Bípedos." Tesis, Universidad de Chile, 2008. http://repositorio.uchile.cl/handle/2250/103074.

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En el presente trabajo de memoria se realiza el diseño e implementación de un sistema de control, basado en la utilización de un Digital Signal Controller. El objetivo es construir completamente un sistema que permita el control de un robot bípedo para ser utilizado en las competencias RoboCup por el equipo de futbol robótico ROADRUNNERS. El diseño del sistema comienza con la identi cación de los requerimientos basado en la experiencia de otros sistemas de control. Ya jados los requerimientos, se seleccionan los componentes que los cumplan, siendo el más relevante controlador. La implementación de lo diseñado anteriormente se realiza etapa por etapa. Se diseñan los PCB (placas de circuitos impresos) desde la descripción de los componentes hasta la fabricación mediante la máquina de construcción de prototipos LPKF. Con lo anterior se genera un prototipo para realizar las pruebas necesarias para validar el funcionamiento de un rmware que fue implementado para controlar el robot UCH1 Tanker. El resultado obtenido del desempeño del prototipo permite validar los objetivos planteados en un comienzo y permite el diseño nal de la versión nal donde toman en cuenta las restricciones de espacio para la instalación en el robot HR18. En conclusión, la selección del Digital Signal Controller TMS320F28335 y la construcción del prototipo cumplen con los objetivos planteados, permitiendo controlar efectivamente un robot bípedo. Para trabajos futuros queda la optimización del rmware para aprovechar todas ventajas que ofrece el TMS320F28335.

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Ramos, Wilbert Rivera. "Vision guided robot : a solution för parts handling - SAAB Autmobile." Thesis, University West, Department of Technology, Mathematics and Computer Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-1353.

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Moreno, Agustín Ezequiel, and Gino Frenguelli. "Control de un robot animatrónico tipo reptil volador." Bachelor's thesis, Universidad Nacional de Córdoba Facultad de Ciencias Exactas, Físicas y Naturales, 2019. http://hdl.handle.net/11086/12688.

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Proyecto Integrador (IE)--FCEFN-UNC, 2019 Pretende rediseñar, reconstruir y controlar un robot tipo reptil volador que representa a una especie Tapejara, ahora renombrado por los científicos con el nombre de Tupandactylus. Se busca que este animatrónico pueda tener movimientos de cabeza, pico y de alas con determinada naturalidad y ser controlado de diferentes modos, ya que la finalidad es la exposición en parques y museos temáticos

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Ekwall, Johan, and Fredrik Helmenius. "Simulering, ett alternativ inom produktionsplanering?" Thesis, Linköping University, Production Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-52242.

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Typically, when Faurecia in Torsås are planning a new assembly line, one of the steps is to build a full-scale model of the line in card board, a form of mock-up planning. Faurecia has shown interest in finding an alternative methodology. The purpose was to explore the possibility of replacing today's cardboard based mock-up planning with models in a digital simulation environment.The purpose of the thesis has been to answer some of these complex questions; What are the benefits of using a simulation tool? In what way can we use it? If we choose to use a simulation tool, in what way does it affect our way of planning an assembly line? What are the advantages and disadvantages? Are there any economical and social aspects?Our results made us realize that a digital simulation tool does not replace the card board. On the other hand simulation could be used as a complement. Card board exercises and simulations play two different roles in the development of an assembly line. The use of card board is an excellent example of how you can generate a wide range of creative solutions at an early stage of the design process. This offers the possibility to create and evaluate several different concepts during a short period of time.We believe that the benefits of a simulation tool come in handy at a later stage of the design process, when a conceptual solution is selected. The simulation tool will be able to evaluate the solution and identify where problems may occur. The output of the simulation tool may also be used as a communication tool, internally as well as externally.

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Mo, Yamin. "Terra - An Open Digital Twin Framework for Simulation-to-Real AI Development." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/25799.

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The development of artificial intelligence (AI) based robot policies such as embodied visual AI is a rapidly emerging field that promises to fully automate robot sensing and control, reducing the need for expert knowledge and information about system dynamics. The recent surge in the availability of digital simulation environments has helped to alleviate the data scarcity problem faced by AI training and yielded many tasks for embodied AI to explore. In contrast to conventional computer vision databases (e.g. ImageNet, COCO), they provide interactive environments tailored to the training of embodied AI agents (e.g. virtual robots). Despite their success, there remain several unaddressed issues. First, these environments primarily focus on in-simulation policy training and are not well suited for real-world performance evaluation. Second, current platforms do not model the dynamics of the physical environment on-the-fly, limiting their potential for the development of robot navigation policies in challenging environments. Third, the associated real-world evaluation environments are both expensive and limited to large interior scenes. This limits access to the physical environments, subsequently making sim-to-real policy evaluation difficult. Fourth, current simulations rely on third party robots for policy training and evaluation, which can be costly while limiting the robot’s customizability and optimisation for the associated task and environment. To tackle these issues, we propose a novel robot-centred smart digital twin framework called Terra. Terra leverages the power of digital twin (DT) systems (digital replicas of the physical world), commonly used for monitoring and evaluating physical systems. Terra includes a comprehensive DT representation which encodes useful real-time dynamics of both the physical world and the robot agent deployed therein. The DT is updated through a multi-view, multi-modality perception module, which obtains high-level semantics, delivering a precise description of the current status of the physical environment and the robot agent. By mapping the perceived results to the virtual replica of the physical environment, Terra actively updates the action policy and sends it back to the agent, forming an integral and real-time information feedback loop. In practice, to help demonstrate the proposed framework's effectiveness and feasibility, we deliberately set up a challenging unordered physical environment with many obstacles and a custom robot tasked with a simple navigation task. Our physical scene is inexpensive and small, while our novel low-cost robot is customised for the environment. Experiment results show that the proposed Terra framework successfully enables the robot to accomplish a simple navigation task, demonstrating its suitability for real-world robot performance evaluation.

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Espinosa, Cecilia H. "Low to medium level image processing for a mobile robot." PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/4294.

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The use of visual perception in autonomous mobile systems was approached with caution by mobile robot developers because of the high computational cost and huge memory requirements of most image processing operations. When used, the image processing is implemented on multiprocessors or complex and expensive systems, thereby requiring the robot to be wired or radio controlled from the computer system base.

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Dill, Byron. "Human robot interaction using a personal digital assistant interface : a study of feedback modes /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418012.

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Wu, Tsan-Ming. "Statistical impulse reponse modeling and dereverberation for room acoustics." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/14932.

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Myers, Pollyann Elizabeth. "Institute for Digital Research and New Offices for the National Endowments for the Arts and Humanities located in the Columbia Heights Neighborhood of Washington, D.C." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/64245.

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The proposed 42,000 square foot facility is envisioned to be a satellite office for both the National Endowment for the Arts and the National Endowment for the Humanities, as well as a digital research institute. The institute seeks to provide integrated collaboration with the NEA and NEH, although it is also open to collaboration with other organizations related to arts and humanities scholarship. The proposed site is located at the intersection of 14th Street and Park Rd NW, in the Columbia Heights neighborhood of Washington, D.C. At this time, the neighborhood is experiencing a revival in development that began approximately 10-15 years ago. Community residents describe the site as being the "core area" of the neighborhood and also consider it to be the number one priority area for redevelopment of the entire neighborhood. Strategically locating the building at the main intersection of the neighborhood facilitates community involvement and cognition as well as encourages the surrounding arts and humanities related organizations to become more closely involved with the NEA and NEH and their research. This development is meant to be a cultural marker. Functionally, this facility will utilize the most advanced information technology and the most extensive humanities and arts related databases as tools for scholarly research. Master of Architecture

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Ophoff, Madri. "Distributing intelligence in the wireless control of a mobile robot using a personal digital assistant." Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/1355.

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Personal Digital Assistants (PDAs) have recently become a popular component in mobile robots. This compact processing device with its touch screen, variety of built-in features, wireless technologies and affordability can perform various roles within a robotic system. Applications include low-cost prototype development, rapid prototyping, low-cost humanoid robots, robot control, robot vision systems, algorithm development, human-robot interaction, mobile user interfaces as well as wireless robot communication schemes. Limits on processing power, memory, battery life and screen size impact the usefulness of a PDA in some applications. In addition various implementation strategies exist, each with its own strengths and weaknesses. No comparison of the advantages and disadvantages of the different strategies and resulting architectures exist. This makes it difficult for designers to decide on the best use of a PDA within their mobile robot system. This dissertation examines and compares the available mobile robot architectures. A thorough literature study identifies robot projects using a PDA and examines how the designs incorporate a PDA and what purpose it fulfils within the system it forms part of. The dissertation categorises the architectures according to the role of the PDA within the robot system. The hypothesis is made that using a distributed control system architecture makes optimal use of the rich feature set gained from including a PDA in a robot system’s design and simultaneously overcomes the device’s inherent shortcomings. This architecture is developed into a novel distributed intelligence framework that is supported by a hybrid communications architecture, using two wireless connection schemes. A prototype implementation illustrates the framework and communications architecture in action. Various performance measurements are taken in a test scenario for an office robot. The results indicate that the proposed framework does deliver performance gains and is a viable alternative for future projects in this area.

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Cheung, Tina, and Tommie Pollack. "Införande av helautomatisk kantpressning baserad på digital ritning med industriell robot och kantpress i samverkan." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194218.

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Dissertations / Theses on the topic 'Digital root'

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