The purpose of the study was to determine the effects of level III video disc instruction on high school biology students. There were three areas studied: students' achievement in biology, students' attitude toward biology, and confidence. The experimental group consisted of 70 biology students. The control group also consisted of 70 biology students. The teacher of the experimental group used level in video disc instruction to teach about invertebrates, vertebrates, human systems, and plants throughout the semester. The teachers of the control group taught the same topics during the same period using the traditional lecture method and without level III video disc instruction. Students took the Biology Achievement Test, the Purdue Master Attitude Scale, and the Confidence in Learning Inventory before and after the treatment period. A t-test on the pretest scores of the experimental group and the control group showed no significant difference between the two groups. The experimental group also took the Technology Preference Survey after the treatment period.

Att musik väcker känslor är nog något som vi alla kan komma överens om. Musiken kan få oss att skratta, gråta, dansa, ja, alla känslouttryck kan skapas genom den. Och kanske är den ultimata låten den som får oss att känna allting på en och samma gång, och får oss att vilja lyssna på den om och om igen. Vissa låtar med tillhörande musikvideos exploderar och får miljoner, för att inte tala om miljarder, klick. Musiken kan ibland bli mer än bara en låt, och folk kan bli sittandes och diskutera dess mening i timtal. Låten This is America, med tillhörande musikvideo, är en sådan. Den här studien redogör för den videons beståndsdelar, hur den anspelar med den nutida politiska kontexten och vad för eko den har skapat till omvärlden. För att ta reda på hur videon blivit så populär författade vi en övergripande frågeställning som löd: “Hur ska vi förstå meningsskapandet i This is America?”. Utifrån vår forskningsöversikt, kunde vi finna att ett popkulturellt fenomens mångtydighet och öppenhet till tolkning, bäddar för dess popularitet. Genom historien finns det även fog för att musik som är sprungen ur utanförskap och som kritiserar samhället, har möjlighet att bli än mer populär. Mot bakgrund av forskningsöversikten bröt vi ner musikvideon This is America i olika delar för att ta reda på dess innebörd och djupliggande meningar, allt för att förstå dess popularitet. Videon, tillsammans med dess låttext, tar upp ämnen såsom vapenfrågan i USA, spåren efter slaveriet och hur mörkhyade personer fortfarande lever i ett förtryck i landet. Videons enorma popularitet beror förmodligen på att de tecken och de ämnen som den tar upp berör väldigt många människor. I princip vem som än tittar på videon kan se något som de känner igen, oavsett om personen är fem år, eller 105. Barnen känner igen danserna från spelet Fortnite, medan de äldre ser figuren Jim Crow som de associerar till segregationen i det tidiga 1900-talets USA. En musikvideo kan säga oss så ohyggligt mycket mer än vad vi, vid första anblick, tror, vilket den här uppsatsen pekar på. Att skänka en extra blick åt den där musikvideon kan ge en inblick i en värld som vi annars inte alltid kan se in i. Den kan öppna dörren och ge en samhällsskildring som få medier skulle kunna presentera. / The fact that music evoke emotions inside us is something that probably all of us are willing to agree on. Music can make us laugh, cry, dance - every possible expression of emotions can be created through it. Perhaps may the ultimate song be the one that make us feel all of these emotions at once, and make us want to listen to it, over and over again. Some songs and music videos blow up and create millions or even billions of views. At times, music can be more than just a song, making people want to sit down and discuss its meaning for hours. The song This is America and its music video is a good example of this phenomenon. The purpose of this study is to explore the elements of this particular video, how it alludes with the current political context and the aftermath that have aroused from it. To explore the reason behind the enormous popularity of this video, we composed a comprehensive research question, that goes “How are we to understand the meaning in This is America?”. From the background of our research summary, we were able to find that the ambiguousness and the potential of a wide interpretation of a popular cultural phenomenon, is what lays the ground for its popularity. Through history, it can be said that music, that have been made from alienation, have a possibility of becoming even more popular. With our research summary in hand, we broke down the music video This is America into sections, in order to learn its meaning and signification, and to understand its popularity. The video and its lyrics, brings up subjects such as gun politics in the United States, the remaining traces of slavery, and how people of colour still suffer from oppression. The enormous popularity of the video probably comes from the wide range of subjects and signs that it addresses. Basically anyone who watches it will see something they recognize, regardless of if the person is five or 105 years old. Children recognize the dances from the video game Fortnite, while the elder recognize the character Jim Crow, who they associate with the segregation in the United States in the beginning of the 20th century. A music video can tell us more than we originally think, which is also what this essay points to. If given an additional look, a music video might be able to give an insight to a world that is unknown to us. It may even open the door to provide a portrayal of society that regular media rarely presents.

Submitted by Maria Aparecida (cidazen@gmail.com) on 2017-04-17T11:42:26Z No. of bitstreams: 1 Thales Valente.pdf: 2116457 bytes, checksum: 1fe85262c104d5e919673a3d65e1fd56 (MD5) / Made available in DSpace on 2017-04-17T11:42:26Z (GMT). No. of bitstreams: 1 Thales Valente.pdf: 2116457 bytes, checksum: 1fe85262c104d5e919673a3d65e1fd56 (MD5) Previous issue date: 2017-02-03 / CNPQ, TeCGraf/PUC-Rio / Medical image processing can contribute to the detection and diagnosis of human body anomalies, as an important toll to minimizes the degree of uncertainty in diagnosis, and provides specialists with an additional source of information. Strabismus is one of these anomalies, which affects approximately 4% of the population. Strabismus modify the mechanism of vision, resulting in aesthetical and sensory problems. The first case is reversible at any age. Regarding sensory problems, late treatment may lead to an irreversible condition. The cover test is one of the types of exams used to diagnose this pathology. The use of low cost computational resources to aid in the diagnosis and treatment within the strabismus subspecialty is not yet a reality. Therefore, this work presents a computational methodology to automatically pre-diagnosis strabismus through digital videos featuring cover test. To do this, the methodology was divided in 8 stages: Acquisition (1), Detection of eyes region (2), Location of pupil (3), Location of limbus (4) , Tracking eyes (5), Detection of occluder (6) , Detection (7) and Diagnosis of strabismus (8). The effectiveness of the method in the indication of the diagnosis was evaluated by comparisons made with the diagnosis provided by the expert. For detection of strabismus, the method proposed achieved 100% specificity, sensitivity of 80% and 93.33% accuracy and was demonstrated to be 87% accurate in diagnosing strabismus, while acknowledging measures lower than 1 prismatic diopter, and an average error of 2.57 prismatic diopters in deviation measure. So, was demonstrated the feasibility of using computational resources based on images processing techniques to achieve diagnosing strabismus through cover test. / O processamento de imagens médicas vem contribuindo para a detecção e o diagnóstico de anomalias no corpo humano, sendo uma importante ferramenta na redução do grau de incerteza do diagnóstico, provendo uma fonte adicional de informação aos especialistas. Uma dessas anomalias é o estrabismo, que afeta aproximadamente 4% da população e modifica o mecanismo de visão, resultando em problemas estéticos e sensoriais. O primeiro caso é reversível a qualquer idade. Já em relação aos problemas sensoriais, o tratamento tardio pode levar á um quadro irreversível. O cover test é um dos tipos de exames realizados para diagnosticar tal patologia. A utilização de recursos computacionais de baixo custo no auxílio diagnóstico e terapêutico dentro da subespecialidade estrabismo ainda não é uma realidade. Portanto, este trabalho apresenta uma metodologia computacional para pré-diagnosticar automaticamente o estrabismo através de víıdeos digitais da aplicação do exame cover test. Para tanto, a metodologia foi dividida em 8 etapas: (1) Aquisição, (2) Redução da região dos olhos, (3) Localização da pupila, (4) Localização do limbo, (5) Rastreamento dos olhos, (6) Detecção do oclusor, (7) Detecção e (8) Diagnóstico do estrabismo. A eficácia do método na indicação do diagnóstico foi avaliada através de comparações realizadas com os diagnósticos fornecidos pelo especialista. Para a detecção de estrabismo, a metodologia proposta obteve 100% de especificidade, 80% de sensibilidade e 93,33% de acurácia e demonstrou 87% de acurácia no diagnóstico do estrabismo, mesmo considerando medidas menores que 1 dioptria prismática, apresentando erro médio de 2,57 dioptrias prismáticas na aferição do desvio. Assim, foi demonstrada a viabilidade da utilização de recursos computacionais baseados em técnicas de processamento de imagens para alcançar o diagnóstico de estrabismo através do cover test.

Abstract not available

My research investigates the habitual, the non-monumental, the mundane, the ordinary and the everyday. I conceive of this as those moments in life that are not socially or culturally recognised as important. Traditionally, such moments have not been considered worthy of documentation and have been omitted or overlooked by mainstream media. This exegesis examines the importance of the everyday and considers how to make it conspicuous. Historically, these moments have been identified with the feminine, in that much theoretical and artistic work has emerged exploring women's experience of the everyday and testifying to its importance. Three spheres in particular have attracted critical interest: namely the body, the domestic and personal identity. For example, in 1966 Yoko Ono's 'No 4 (Bottoms)' brought the issue of the body and its banality onto centre stage by showing an endless parade of bottoms. In 1975, Chantal Akerman's film 'Jeanne Dielman, 23 quai du commerce, 1080 Bruxelles', showed the everyday routines of a self-contained housewife. More recently, numerous artists have explored the politics of identity. Sadie Benning has made numerous videos that show the mundane and also reveal her personal identity, by exploring large and especially small scale details. / While conventionally newsreels and big budget documentaries have focused on 'big' events, one of the arenas that have investigated the everyday is experimental film and video. My exegesis gives a brief historical overview of this genre. Testimony in this media is often used as a voice to express the everyday. My journal entries (testimonies) deal with everyday experiences, and are interspersed throughout my exegesis. They are also the main threads in my videos. In my studio work, I use movement and dance to express in an abstract manner issues about the everyday, which include personal identity, more specifically issues of illness and sexuality / My research draws on a variety of sources including: 1970's feminist artists and filmmakers (Chantal Akerman and Martha Rosler). Many artists who were involved in the women's movement used their bodies in various art forms including performance art to make radical statements about domesticity and feminism. Contemporary artists' depiction of personal identity that mostly informed my work (in particular, queer identity) are: experimental queer film and media makers Sadie Benning, Marlon Riggs, Isaac Julien and William Yang. / Thesis (MVisualArts)--University of South Australia, 2006.

Dans cette thèse nous proposons des algorithmes pour le suivi 3D du mouvement des objects déformables à partir de plusieurs caméras vidéo. Bien qu’une suite de reconstructions tridimensionnelles peut être obtenue par des méthodes de reconstruction statique, celle-ci ne représente pas le mouvement. Nous voulons produire une représentation temporellement cohérente de la suite de formes prises par l’object. Précisément, nous souhaitons représenter l’objet par une surface maillée 3D dont les sommets se déplacent au cours du temps mais dont la topologie reste identique.Contrairement à beaucoup d’approches existantes, nous proposons de représenter le mouvement du volume intérieur des formes, dans le but de mieux représenter la nature volumétrique des objets. Nous traitons de manière volumétrique les problèmes fondamentaux du suivi déformable que sont l’association d’éléments semblables entre deux formes et la modélisation de la déformation. En particulier, nous adaptons au formes volumétriques les modèles d’association EM-ICP non-rigide ansi que l’association par détection par apprentissage automatique.D’autre part, nous abordons la question de la modélisation de l’évolution temporelle de la déformation au cours d’une séquence dans le but de mieux contraindre le problème du suivi temporel. Pour cela, nous modélisons un espace de forme construit autour de propriétés de déformations locales que nous apprenons automatiqument lors du suivi.Nous validons nos algorithmes de suivi sur des séquences vidéo multi-caméras avec vérité terrain (silhouettes et suivi par marqueurs). Nos résultats se révèlent meilleurs ou équivalents à ceux obtenus avec les méthodes de l’état de l’art.Enfin, nous démontrons que le suivi volumétrique et la représentation que nous avons choisie permettent de produire des animations 3D qui combinent l’acquisition et la simulation de mouvement. / In this thesis we propose algorithms for tracking 3D deformable shapes in motion from multiview video. Although series of reconstructed 3D shapes can be obtained by applying a static reconstruction algorithm to each temporal frame independently, such series do not represent motion. Instead, we want to provide a temporally coherent representation of the sequence of shapes resulting from temporal evolutions of a shape. Precisely, we want to represent the observed shape sequence as a 3D surface mesh whose vertices move in time but whose topology is constant.In contrast with most existing approaches, we propose to represent the motion of inner shape volumes, with the aim of better accounting for the volumetric nature of the observed object. We provide a fully volumetric approach to the fundamental problems of deformable shape tracking, which are the association between corresponding shape elements and the deformation model. In particular, we extend to a volumetric shape representation the EM-ICP tracking framework and the association-by-detection strategy.Furthermore, in order to better constrain the shape tracking problem, we propose a model for the temporal evolution of deformation. Our deformation model defines a shape space parametrized by variables that capture local deformation properties of the shape and whose values are automatically learned during the tracking process.We validate our tracking algorithms on several multiview video sequences with ground truth (silhouette and marker-based tracking). Our results are better or comparable to state of the art approaches.Finally, we show that volumetric tracking and the shape representation we choose can be leveraged for producing shape animations which combine captured and simulatated motion.

This thesis deals with the issue of gender stereotypes, which are presented in music videos in actual popular songs. The work is divided into two parts. The first, theoretical part is focused on defining the basic concepts and definitions, which are linked to the gender theory, media and media communications. Next part is showing gender in media communications with an emphasis on advertising messages and popular music. The second part deals with the actual practical research, which is primary based on Goffman's view of gender stereotyping in advertising messages. In the continuity of the theoretical part there are analyzed selected music videos. The focus is concentrated on identifying and describing the mechanisms by which the gender stereotypes in popular music are reproduced. Selected music clips were analyzed by procedures established under the content analysis. The results show how the masculinity and the femininity are displayed in contemporary popular music video clips.

[pt] O consumo de vídeos representa grande parte do tráfego na Internet hoje e tende a aumentar ainda mais nos próximos anos. Neste trabalho, investigamos formas de aprimorar o caching em redes de distribuição de conteúdo (Content Delivery Networks - CDNs) de vídeo para reduzir o tempo de resposta das mesmas e aumentar a qualidade de experiência dos usuários. A partir da análise de diferentes técnicas, concluímos que o hashing consistente com cargas limitadas possui características interessantes para esse fim e se encaixa adequadamente ao cenário de distribuição de vídeos. Para verificar o seu desempenho, criamos uma plataforma de experimentação e, usando dados de uma CDN de vídeos real, o confrontamos com o hashing consistente e com o método de balanceamento least connections, todos implementados de maneira equivalente para permitir uma comparação justa. Por fim, discutimos os resultados dessa avaliação, destacando os benefícios e limitações dessa técnica no contexto considerado. / [en] Video consumption accounts for a large part of Internet traffic today and tends to increase further in the next years. In this work, we investigate ways to improve caching in video content delivery networks (CDNs) to reduce their response time and increase the users quality of experience. From the analysis of different techniques, we concluded that consistent hashing with bounded loads has interesting characteristics for this purpose and fits adequately to the video delivery scenario. In order to verify its performance, we created an experimentation platform and, using data from a real video CDN, confronted it with the consistent hashing and the least connections balancing method, all implemented in an equivalent manner to permit a fair comparison. Lastly, we discussed the results of this evaluation, highlighting the benefits and limitations of this technique in the considered context.

Text in Afrikaans / Musiekvideos is 'n integrerende deel van die (rock)-musiekbedryf, hoofsaaklik as reklame vir die kunstenaars en hul musiekopnames. Musiekvideos is verder 'n wesenlike deel van die massamedia, in so 'n mate dat daar verskeie spesialismusiektelevisiekanale is wat 24 uur per dag op al die kontinente uitsaai, wat 'n aanduiding gee van die omvang van musiekvideos. Hierdie videos speel veral 'n vemame rol by die jeug as sub-kultuurgroep. Ook christenmusikante gebruik musiekvideos, en hul videos word gereeld as deel van christelike programme uitgesaai. Dit is gewoonlik een van die oogmerke van christenkunstenaars om die evangelie deur hul musiek uit te dra, en in die geval van christelike musiekvideos dien hulle dikwels nie net as reklame nie, maar word daar ook 'n christelike boodskap oorgedra, veral in die geval van verhalende en konsepvideos. Daar word na die rol van hierdie videos in die konteks van die christene se benutting van die massamedia gekyk en daar word onder meer 'n teologiese fundering vir die gebruik van die massamedia in die algemeen, asook musiekvideos in die besonder gegee. 'n Aantal musiekvideos van kontemporere musiekkunstenaars soos Carman, Michael W. Smith, Steve Taylor, The Newsboys, en Steven Curtis Chapman word individueel beskryf en vanuit 'n teologiese perspektief beoordeel om te sien hoe suksesvol hulle in die oordra van 'n christelike boodskap is. Daar word 'n vergelyking getref tussen christelike en sekulere musiekvideos en hoe sekere onderwerpe benader word. Sekere tekortkominge, sowel as positiewe aspekte by christelike musiekvideos word as deel van 'n missiologiese reflektering uitgewys. / Christian Spirituality, Church History and Missiology / D.Th. (Missiology)

Made available in DSpace on 2018-06-27T19:13:01Z (GMT). No. of bitstreams: 2 Adilson Ortiz Bittencourt.pdf: 1192232 bytes, checksum: efc41cf355f4aa1388c5455ba1190320 (MD5) Adilson Ortiz Bittencourt.pdf.jpg: 3583 bytes, checksum: 93e87881997ff64c571e9e1d9c5ce4ad (MD5) Previous issue date: 2012-01-12 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / In this study, through the difficulties encountered by students in solving problems in trigonometry, our aim was to create activities with the help of the software GeoGebra for the teaching of trigonometry in high school. The literature review covered the use of computational tools in education, trigonometry teaching and the use of the software GeoGebra in mathematics teaching. Moreover, were presented the resources used to build the product of the dissertation and an analysis of textbooks that approach contents of Trigonometry. Initially the survey was developed with 29 students of 2nd year of high school, in a public school in the municipality of Santa Maria, for whom a test was administered. With the correction of the solutions and their classification, it was found that the percentage of total or partially correct responses did not reach 50%. Thus, from the observation of these difficulties, a set of activities was planned to help teachers develop these topics as well as a way to allow students to learn autonomously, through videos. The activities, developed with help of GeoGebra, CamStudio and Screencasting, are available in two books, "Student Paper" and "Teacher Manual", that can be used in class attendance, in school computer labs and in Distance Education, and will be available on the website of the Master Professional course in Physics and Mathematics Teaching, of UNIFRA. / Nesta pesquisa, objetivou-se, a partir da investigação sobre dificuldades encontradas pelos alunos na resolução de problemas de Trigonometria, a criação de atividades com o auxílio do software GeoGebra, para o ensino de Trigonometria no Ensino Médio. A revisão de literatura abrangeu o uso de ferramentas computacionais na Educação, o ensino de Trigonometria e o uso do software GeoGebra no ensino de Matemática. Além disso, foram apresentados os recursos utilizados para a construção do produto da dissertação e uma análise de livros didáticos que abordam conteúdos de Trigonometria. A pesquisa, inicialmente, desenvolveu-se com 29 alunos de 2º ano de Ensino Médio de uma escola pública do município de Santa Maria, RS, para os quais foi aplicado um teste. Com a correção das soluções e de sua classificação, verificou-se que a percentagem de respostas total ou parcialmente corretas não atingiu 50%. Assim, a partir da constatação dessas dificuldades, foi planejado um conjunto de atividades, para auxiliar professores a desenvolver esses tópicos, bem como possibilitar aos alunos uma maneira de aprender de forma autônoma, por meio de vídeos. As atividades, elaboradas com auxílio dos softwares GeoGebra e CamStudio e da técnica de Screencasting, foram disponibilizadas em dois livros, Livro do Aluno e Manual do Professor , que podem ser empregados em aula presenciais, em laboratórios de informática das escolas, ou na Educação a Distância, visto que ficarão disponíveis no site do Mestrado Profissional em Ensino de Física e de Matemática da UNIFRA.