The purpose of this study was to investigate under experimental conditions whether the self concepts of children could be improved through the use of videotape feedback as a stimulus for discussion in group counseling sessions.The ninety-nine subjects in this study were all of the fourth and fifth grade students at Burris Laboratory School, Muncie, Indiana. The study was conducted during the spring of 1977.Two classrooms were used as experimental groups and two were control groups. Each classroom contained both fourth and fifth grade students. The experimental groups participated in six group counseling sessions over a two week period. Videotapes were made of regular classroom activities and these tapes were used as a stimulus for group discussions one hour later. Discussions were guided by the principles of Grasser's Reality Therapy.The data collected for each subject was the total score obtained on the Piers-Harris Children's Self Concept Scale which was administered as a pre-test, a post-test and a two-week delayed post-test.The effects of the treatment were analyzed through the use of a 2 X 4 X 2 univariate analysis of covariance with repeated measures on the third factor. The pre-test scores were used as a covariate. All factors were considered to be fixed.A non-significant sex-by-treatment interaction was found (F=1.054, P<.373). Also, a non-significant test-bysex interaction was found (F=1.35, p(.26). Because there were no interactions, the effects of the treatment were interpreted directly by a contrast between the experimental and control groups (E1+ E2 - C1+ C2).The null hypothesis stated that there would be no significant differences between the experimental and control groups in the self concepts of the subjects as measured by the Piers-Harris Children's Self Concept Scale. A F ratio of 15.991 (p<.0002) allowed the null hypothesis to be rejected. Because of the degree of non-homogeniety of the groups, the significance was in the direction of the control groups who obtained higher means than the experimental groups. Examination of group means showed that the experimental groups were significantly lower on the pre-test scores, made larger gains during the treatment than the control groups, but still scored lower on the two post-tests than the control groups.The mean of the normative sample for the Piers-Harris Children's Self Concept Scale is 51.84. In this study the mean on the delayed post-test was 59.56 for the experimentalgroups and 67.02 for the control groups.Under the constraints of the study, the following conclusions were made based on the statistical analyses of the data:1.The treatment did not produce more significant change than that observed in the groups which receive treatment.2. As a group, the self concept scores of the students at Burris Laboratory School are higher than those of the normative group.3. There were no significant differences in self concept scores based on the sex of the subjects.4. Becoming familiar with the components of personality which make up the self concept, as defined by PiersHarris, appeared to have a positive effect on the subjects.5. All groups experienced gains in self concept scores during the five weeks of this study.Recommendations were made for further study to include a longer period of treatment, the use of a behavioral. checklist to determine the effects of the treatment, and the use of videotape feedback and the Piers-Harris Children's Self Concept Scale in classroom activities.

Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of North Texas, August, 2008. / Title from title page display. Includes bibliographical references.

Thesis (Ed.D.)--Teachers College, Columbia University, 1970. / Typescript; issued also on microfilm. Sponsor: Antoinette M. Gentile. Dissertation Committee: Louis Forsdale, Bernard Gutin. Includes bibliographical references (leaves 89-92).

Thesis (Ph. D.)--University of Florida, 1981. / Description based on print version record. Typescript. Vita. Includes bibliographical references (leaves 137-142).

Thesis (M.S.)--Kutztown University of Pennsylvania, 1994. / Source: Masters Abstracts International, Volume: 45-06, page: 2713. Abstract precedes thesis as [2] preliminary leaves. Typescript. Includes bibliographical references (leaves 41-43).

o Pontal de Tapes está inserido dentro da Planície Costeira do Rio Grande do Sul e localiza-se ao noroeste da Laguna dos Patos. Até a década de 70, a área caracterizava-se por uma dinâmica regida pela ação dos ventos, das ondas e da corrente lagunar, compondo um ambiente caracterizado pela existência de banhados, dunas, bancos de areia, entre outras feições. Com a introdução de bosques de pinus, o Pontal passou por uma drástica alteração nos seus padrões eólicos de transporte e acumulação de areia. Este fato levou a área a uma nova dinâmica eólica e, por sua vez, morfológica. Neste estudo passamos a avaliar as conseqüências deste novo cenário. Para tal, monitoramos durante aproximadamente um ano (05.06.02 a 04.06.03) os parâmetros climáticos, bem como algumas dunas da área. A partir daí detectou-se a existência de quatro processos atuantes no ambiente: translado, bloqueio, captura e carreamento, sendo que os três últimos passaram a dominar o modelado do ambiente pós-pinus. A atuação desta nova dinâmica causou profundas alterações ao Pontal, como o desaparecimento de banhados e a descaracterização do sistema dunário. / Pontal de Tapes is formed bya sandy spur insert in a Costal Plain of Rio Grande do Sul and located in northwest of Laguna dos Patos. Until 1970's, this area was distinguished for a dynamic characterization by winds action, waves and lagoon's flow, forming the environment with swaps, dunes, sand bar, between others features. Introduced forest pine, Pontal passed by hard alteration in its eolic transportation pattem and sand accumulation. This fact took the area a new eolic dynamic, consequently morphological. In this study we started to evaluate the consequences of this new scene. Then during a year (05.06.02 to 04.06.03) was monitored the weather's parameters as well as some dunes' areas. From this was detected that there are four processes happening in the environment: translado (Translocation), bloqueio (blockage), captura (capture) and Carreamento (carry aside) being the last three, started to overcome the environment after pines pattem. This new dynamic performance . caused deeply alteration in Pontal, such as swamp disappearance and uncharacterization of dunufield.

o Pontal de Tapes está inserido dentro da Planície Costeira do Rio Grande do Sul e localiza-se ao noroeste da Laguna dos Patos. Até a década de 70, a área caracterizava-se por uma dinâmica regida pela ação dos ventos, das ondas e da corrente lagunar, compondo um ambiente caracterizado pela existência de banhados, dunas, bancos de areia, entre outras feições. Com a introdução de bosques de pinus, o Pontal passou por uma drástica alteração nos seus padrões eólicos de transporte e acumulação de areia. Este fato levou a área a uma nova dinâmica eólica e, por sua vez, morfológica. Neste estudo passamos a avaliar as conseqüências deste novo cenário. Para tal, monitoramos durante aproximadamente um ano (05.06.02 a 04.06.03) os parâmetros climáticos, bem como algumas dunas da área. A partir daí detectou-se a existência de quatro processos atuantes no ambiente: translado, bloqueio, captura e carreamento, sendo que os três últimos passaram a dominar o modelado do ambiente pós-pinus. A atuação desta nova dinâmica causou profundas alterações ao Pontal, como o desaparecimento de banhados e a descaracterização do sistema dunário. / Pontal de Tapes is formed bya sandy spur insert in a Costal Plain of Rio Grande do Sul and located in northwest of Laguna dos Patos. Until 1970's, this area was distinguished for a dynamic characterization by winds action, waves and lagoon's flow, forming the environment with swaps, dunes, sand bar, between others features. Introduced forest pine, Pontal passed by hard alteration in its eolic transportation pattem and sand accumulation. This fact took the area a new eolic dynamic, consequently morphological. In this study we started to evaluate the consequences of this new scene. Then during a year (05.06.02 to 04.06.03) was monitored the weather's parameters as well as some dunes' areas. From this was detected that there are four processes happening in the environment: translado (Translocation), bloqueio (blockage), captura (capture) and Carreamento (carry aside) being the last three, started to overcome the environment after pines pattem. This new dynamic performance . caused deeply alteration in Pontal, such as swamp disappearance and uncharacterization of dunufield.

Fitas magnéticas amorfas vêm demonstrando uma ampla variedade de aplicações sensoriais devido às suas propriedades magnéticas. A capacidade de serem interrogadas remotamente permite sua aplicação em locais onde limitações físicas impedem o uso de sensores com conexões cabeadas. A capacidade de adquirirem uma anisotropia magnética transversal através de tratamentos térmicos, sob campo magnético e/ou tensão, é o que torna esses materiais atraentes para a aplicação em sensores magnetostrictivos de deformação com acesso remoto. Os materiais avaliados neste trabalho, Metglas 2826MB3, Yeke 1k501, Yeke 1k501a, Vitrovac 7600, Vitroperm 800 e as fitas de EAS Tags, apresentavam curvas de magnetização características de materiais que não possuem uma anisotropia magnética transversal. Isto serviu de motivação para a realização de tratamentos termomagnéticos. Os tratamentos foram realizados sob campo magnético transversal de aproximadamente 500 Oe e nas temperaturas de 235, 275, 315 e 350˚C por tempos de 15, 30 e 60 minutos, com um forno construído em laboratório. Isto resultou em melhorias consideráveis na forma de suas curvas ΔE, tornando-as mais assimétricas e aumentando as variações de frequência que estes materiais podem apresentar. Os tratamentos resultaram também em curvas M-H lineares, susceptibilidade magnética constante até a saturação. Foi construída uma bancada para aplicação de tensões de até 30 MPa nas amostras. A maior assimetria das curvas ΔE para o par ressonador e transdutor (partes componentes do sensor de deformação) permitiu maior resposta de variação de frequência de ressonância do sensor durante testes de tração. No melhor dos casos, uma variação de frequência superior a 5 kHz foi detectada para deformações de aproximadamente 260 ppm, ao se utilizar um par ressonador e transdutor de Metglas 2826MB3 tratados termomagneticamente. Medindo-se as curvas ΔE de uma fita de Metglas 2826MB3, tratada, sobre substratos de aço 1010, material magneticamente mole, observou-se que as mesmas ainda estavam presentes. Porém, apresentam sua forma alterada devido à interação com aço. Simulações realizadas com o software FEMM, auxiliaram na compreensão de fenômenos ocorridos nos testes de deformação e na interação entre a fita e os substratos magnéticos moles. / Submitted by Ana Guimarães Pereira (agpereir@ucs.br) on 2017-04-06T19:26:08Z No. of bitstreams: 1 Dissertacao Alessandro Dalponte.pdf: 3408308 bytes, checksum: 24cdc0372903d233d5c2d5846465cccd (MD5) / Made available in DSpace on 2017-04-06T19:26:08Z (GMT). No. of bitstreams: 1 Dissertacao Alessandro Dalponte.pdf: 3408308 bytes, checksum: 24cdc0372903d233d5c2d5846465cccd (MD5) Previous issue date: 2017-04-06 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, CAPES. / Magnetic amorphous ribbons have a great variety of sensorial applications due to their magnetic properties. The possibility of being remotely queried allows their application in cases where sensors with wired connections present a physical limitation. The capability of acquiring a transverse magnetic anisotropy through thermal treatments, under applied magnetic field and/or stress, is what makes these materials attractive for application in magnetostrictive strain-gauges. The materials studied in this work, Metglas 2826MB3, Yeke 1k501, Yeke 1k501a, Vitrovac 7600, Vitroperm 800 and a commercial EAS Tags, presented magnetization curves with characteristics of materials with reduced transverse magnetic anisotropy. This was the motivation to carry out thermomagnetic treatments. The treatments were carried out under a magnetic field of approximately 500 Oe, using temperatures of 235, 275, 315 and 350˚C, for periods of 15, 30 and 60 minutes, in a home-made oven. The treatments resulted in considerable improvements on the shape of the ΔE curves, making them more asymmetric and increasing the frequency variations that these materials can present. The treatments also resulted in linear M-H curves, with constant magnetic susceptibility until saturation. A system for the application of stresses up to 30 MPa on the samples was built. ΔE curves with greater asymmetry for the pair resonator transducer (components of the strain-gauge) allowed a greater resonance frequency variation response of the sensor during strain tests. In the best case, a frequency variation above 5 kHz was detected for deformations of approximately 260 ppm, when the pair resonator transducer made of thermomagneticaly treated Metglas 2826MB3 was used. The measurements of the ΔE curves of a treated Metglas 2826MB3 ribbon, placed over 1010 steel substrates, soft magnetic material, showed that they were still detectable. However, their form was altered due to the magnetic interaction with the steel. Simulations made using the software FEMM, helped to understand the observed phenomena during the strain tests and the interaction between the ribbon and the soft magnetic substrates.

Orientador: Denis Porto Renó / Banca: Vicente Gosciola / Banca: Marcos Americo / Resumo: Esta dissertação de mestrado tem o propósito de analisar e discutir o papel do vídeo-ativismo e suas conexões em rede, em uma ecologia midiática durante os protestos brasileiros de 2013, tendo como objeto de pesquisa o documentário 20 centavos, do diretor Tiago Tambelli, produzido de forma colaborativa, a partir da criação de um grupo de pessoas no Facebook. O estudo orienta-se a partir dos conceitos de vídeo-ativismo, jornalismo cidadão, movimentos sociais em rede, documentário, e suas inter-relações no contexto contemporâneo das mídias sociais e tecnologias móveis. A metodologia adotada é a análise fílmica, com o estudo dos elementos constitutivos do documentário. A partir dos resultados obtidos, espera-se contribuir para a compreensão do poder da participação cidadã neste novo contexto midiático da web 2.0. / Abstract: This dissertation aims to analyze and discuss the role of video activism and their network connections, in a media ecology at the brazilian protests of 2013, and as a research subject the documentary 20 cents, director Tiago Tambelli produced collaboratively, from the creation of a group of people on Facebook. The study is guided from the video-activist concepts, citizen journalism, social movements networking, documentary, and their interrelationships in the contemporary context of social media and mobile technologies. The methodology used is the film analysis, to the study of the elements of the documentary. From the results obtained, it is expected to contribute to the understanding of the power of citizen participation in this new media context of web 2.0. / Mestre