Submitted by Luiz Felipe Barbosa (luiz.fbabreu2@ufpe.br) on 2015-03-12T12:45:31Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Paulo Perris.pdf: 3226477 bytes, checksum: 8491a6532e86869e3aa3b014f9ca649e (MD5) / Approved for entry into archive by Daniella Sodre (daniella.sodre@ufpe.br) on 2015-03-13T12:53:17Z (GMT) No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Paulo Perris.pdf: 3226477 bytes, checksum: 8491a6532e86869e3aa3b014f9ca649e (MD5) / Made available in DSpace on 2015-03-13T12:53:17Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação Paulo Perris.pdf: 3226477 bytes, checksum: 8491a6532e86869e3aa3b014f9ca649e (MD5) Previous issue date: 2013-03-21 / CAPES / Nos ambientes de aprendizado colaborativo apoiados por computador (do inglês Computer-Supported Colaborative Learning, ou apenas CSCL) a percepção que os usuários têm do ambiente e das suas atividades favorece o aprendizado dos grupos. Há hoje esforços de pesquisa e desenvolvimento para dar suporte às diversas interações, à colaboração e ao compartilhamento de informações entre membros de um grupo em ambientes LMS (Learning Management System), com o objetivo de melhorar a coordenação das atividades dos alunos pelo professor. A adaptação destes ambientes às necessidades particulares de novos contextos pode significar um aumento relevante no potencial de inserção de novas formas de interação. Por isso, a construção de ferramentas que possam tornar o fluxo das atividades (Workflow Educativo) perceptível ao ambiente, podem atender de maneira satisfatória a estas novas necessidades. Este trabalho apresenta o resultado da aplicação de percepção das atividades desenvolvidas por pequenos grupos no LMS Amadeus para melhorar a coordenação destas pelo professor, a qualquer momento. Apresenta também a possibilidade de utilização dos logs dos eventos como scripts para a resolução de atividades por outros discentes, corroborando com o aprendizado colaborativo. Para atingir o objetivo proposto, utilizamos a literatura de Interação Humano-computador, especificadamente o método de design de interação. O processo foi composto por quatro atividades básicas: (1) revisão da literatura, (2) analise de contexto (necessidade do usuário), (3) storyboard, prototipagem e avaliação heurística e (4) concepção e avaliação da usabilidade. Foi considerado no método o foco no usuário, a avaliação da eficácia e a prototipagem evolutiva. Foram ainda utilizadas as técnicas de observação e entrevista para a construção dos primeiros protótipos e futuros storyboards usados na avaliação da eficácia das soluções. A partir das especificações e prototipagem definidas, foi implementada a solução no ambiente de LMS Amadeus, seguindo todas as regras de layout padrão. Por último foi feito um teste de usabilidade com usuários que teve como meta avaliar a eficácia de uso da solução desenvolvida.

Made available in DSpace on 2014-06-12T15:56:14Z (GMT). No. of bitstreams: 2 arquivo2784_1.pdf: 2817992 bytes, checksum: 4b1de7c9c7eb263e4a12e450b7b60a42 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2010 / A crescente demanda por cursos de formação à distância baseados na Web fez com que os ambientes virtuais de ensino colaborativo ganhassem um importante reconhecimento nos dias atuais. Entretanto, a despeito de muitos trabalhos voltados para a área de integração de novas mídias de interação, principalmente com o advento da Web 2.0, muitos ambientes ainda carecem da necessidade de oferecer aos seus usuários, elementos que os ajudem a coordenar suas tarefas e inteirar-se sobre as atividades que ocorrem dentro do ambiente. Essa deficiência, além de reduzir a possibilidade de interação entre os usuários, diminui a motivação de alguns pela sensação de isolamento e de outros o prejuízo pela perda de tarefas por não terem um suporte no ambiente que os mantenha notificados quanto aos prazos. A pesquisa sobre elementos de percepção promove entre outras possibilidades, aumentar as interações aluno-aluno e aluno-ambiente, ajudando-o a melhor utilizar seu tempo, principalmente para os que buscam essa modalidade justamente por falta de tempo. Este trabalho visa modelar as necessidades do aluno com relação à percepção das atividades, permitindo uma interação mais efetiva e o acompanhamento completo e abrangente dessas atividades, tornando-o mais proativo e motivado. Para tanto, usando a metodologia de design centrada no usuário, propôs-se levantar as necessidades dos usuários em relação à percepção e projetar ferramentas que disponibilizem mecanismos de percepção, promovendo a interação entre alunos no ambiente. Como resultados, foram apresentados protótipos de telas contemplando os requisitos levantados e que serão aplicados no contexto do ambiente LMS Amadeus

Made available in DSpace on 2014-06-12T16:01:19Z (GMT). No. of bitstreams: 2 arquivo7606_1.pdf: 2563063 bytes, checksum: 2ee37a679e242b8742869391f22a0fa9 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2011 / As primeiras formas de ensino foram aos poucos in°uenciadas com o aparecimento da internet. Através da internet, se desenvolveu a educação à distância on-line que ofereceu novas possibilidades para a dissemina»c~ao do ensino, dentre elas o móbile learning (m-learning). A flexibilidade e mobilidade advinda do m-learning enseja a utilização de ferramentas dinâmicas e motivadoras para o aprendizado, nesse contexto os objetos de aprendizagem encaixam-se perfeitamente. Esta dissertação apresenta a utilização de objeto de aprendizagem em áudio digital, como estilo de interação no móbile learning da plataforma Amadeus. O método utilizado para se alcançar a meta proposta foi baseada em pesquisa qualitativa e quantitativa, obtidas por meio dos questionários COLLES e ATTLS, além de um texto colaborativo, aplicados em duas turmas de teste através de um curso na Plataforma Amadeus Mobile. Se concluiu com o estudo, a satisfação dos alunos e a ciência da utilização de áudio digital em ambiente mobile para o ensino-aprendizagem

Learning Management Systems (LMSs) have become a larger part of teaching and learning in the modern world. Therefore has Moodle, a free and open source e-learning tool surfaced and gained a lot of attraction and downloads. A purpose of this study has been to develop a new local plugin in Moodle with guidelines from Magnus Eriksson and Tsedey Terefe. A purpose for this project has also been to build a plugin which has the functions Date rollover and Individual date adjustment. Mid Sweden University (Miun) stated that WebCT/Blackboard was in use before Moodle and some other LMSs and the dissatisfaction with WebCT/Blackboard was rife, however some teachers liked it. Therefore WebCT/Blackboard was abandoned and Moodle was embraced. The methods of gaining information has generally been web based sources and three interviews, likewise called user tests. Programs and other aids that have been used include but are not limited to: Google Drive, LTI Provider, Moodle, Moodle documentation, Notepad++, PHP and XAMPP. The plugin has been implemented as a local plugin. The result has shown that the coded plugin, Date adjustment tools could be improved and that it was changed. In the plugin, support for old American English dates were added and the code for using the two functions “Date rollover” and “Individual date adjustment” were rewritten to not interfere with one another. A conclusion to draw from the result is that the plugin has been improved from Terefe’s implementation, although more work can be made with the plugin Date adjustment tools.

This dissertation evaluates the artificial neural technique for evolving a smart antenna system. The AI techniques pose a challenging research in the field of communication. As such the antennas help to communicate with the digital processor to choose the desired signals and reject the others. It makes its own decision even to find the level of interferences and noises to be discarded by amplitude elimination process through the use of perceptron optimization algorithms like LMS (Least Mean Squares). This method helps to enhance the performance of signal processing efficiently. The design of hardware and software are quite complex. This is due to the fact, that the behaviour of the system is not fully understood being a real-time dependent system. This research work is carried only on software with certain simulated activity on beam-formation algorithm and as well, the system responses before and after using the adaptive algorithm. In this report, we try to concentrate to work on the method of adaptivity to make antenna adaptable to a virtual form of real-time environment. For, this reason a two-element antenna is used for simulation testing, as it is the most commonly used antenna for all purposes in communication. It is also tested on various scanning levels of rotation to determine the learning rate (a parameter that has no effect on the radiation output after using LMS) mean-square error rates and convergence analysis. For the purpose of above mentioned tests, three hypotheses are framed in relation to side-lobe reduction level above 5 decibels, the narrowing of the beam after adaptivity and finally the response of the main beam output for varying values of learning rate, respectivelty. The given research work, may comprehend good practical use of this LMS algorithm and also to indicate antenna patterns and the responses to adaptivity conditions through clarity in graphical format. The method is influenced to reduce computational complexity and bring simplicity to the functionality of the antenna with more efficient and effective adaptivness. An effort to test theoretical concepts in practice is also been made in this thesis work. The results show that the antenna system can be made to evolve itself through the process of adaptation with simple behaviour by relying on artificial intelligence technique which ensures little supervision and human intereference. Eventually, it is understood that the reader should have possessed prior concepts, related to antennas, digital signal processing and its practical usage in artificially intelligent systems and as well the exceptions in it, since the work is explained in the direct level assuming so.

Clinicians use growth curves to assess infant health. Most children are measured on growth curves that contain percentiles for height, weight, and head circumference by sex. Preterm infants have their own growth curves. Infants who present with measurements below the 10th percentile are considered small-for-gestational age (SGA), and infants who present with measurements above the 90th percentile are considered large-for-gestational age (LGA). Growth curves and centiles can be generated using 3 and 4 parameter distribution models. To date, no studies have been published to investigate whether growth curves generated using a 3- or 4-parameter model differ significantly. Additionally, researchers have found mixed results when exploring the association between race and pregnancy/delivery. Black mothers may have greater risks and babies with lower weights than babies born to White mothers (Borrell, Rodriguez-Alvarez, Savitz, & Baquero, 2016), and growth curves that do not consider race may misclassify non-White babies (Buck-Louis et al., 2015). In this study, I had two specific aims: (1) to compare the preterm infant growth curves and centiles generated using 3 and 4 parameter methods (Lamba Mu Sigma [LMS] and Box-Cox Power Exponential [BCPE], respectively) and assess each model for adequate fit, and (2) to use percentile cut points from race-specific and non-race-specific LMS curves to classify babies in a validation dataset as SGA or LGA. Regarding the differences in curves generated from the LMS and BCPE distributions, the curves produced using the BCPE distribution had a lower GAIC in some cases but model fit criteria for the LMS curves were adequate. The simpler models generated by the LMS method were retained for birth length, head circumference, and weight by sex with an explanatory variable of gestational age. For aim 2, results indicated that race-specific curves classified babies within expected ranges. Non-race-specific curves overidentified Black babies as SGA and underidentified them as LGA. More research is required to test if this relationship persists for babies delivered at full term.

Stěžejní částí práce je specifikace zavedení a nadefinování hlavních CSF zavedení e-learningového systému. Práce reaguje na chybný trend chápat úspěšné zavedení e-learningového systému jako úspěšnou instalaci systému LMS. Teoretická část práce definuje termíny a souvislosti důležité pro pochopení principu elektronické formy vzdělávání, aktuální e-learningové trendy a standardy IMS a SCORM. V praktické části jsou diskutovány požadavky na e-learningové systémy, role rozhodující o zavedení, analýza vzdělávacích potřeb, umístění systému, integrace s ostatními systémy a pilotní nasazení. Hlavním přínosem práce je definice CSF zavedení systému, konkrétně definice cílů, motivace uživatelů, funkčnost a dostupnost, komunikace, kontrola výuky a zpětná vazba během vzdělávacího procesu.

The main objective of this diploma thesis is to introduce the concept of public virtual educational portal (VEP) as a centralized system giving an easy way to spread information and knowledge among users for their lifelong progress. The partial objectives of this thesis are: - introduction to the problems of virtual education, - analysis of e-learning courses supply, their providers and tools used in the field of education in the Czech republic, - overview of selected learning tools and their utilizing within design of the VEP, - design of a feasible way of realization and evaluation of the VEP plan. Contribution of this thesis is, on the first place, to get the reader introduced into the problems of virtual education. Subsequently the reader is given a helpful overview of brokers and providers of educational courses in the Czech republic. Another benefit of this work is to provide readers with the most exploited tools for educational purposes. The main part of this thesis presents an overall concept of the public virtual educational portal including its realization feasibilities and benefits for the users. Finally this thesis is focused on investment plan evaluation in which the benefits and risks of the VEP project realization are described.

The goal of my master's thesis is a description of the Moodle learning management system, and demonstration of its usability in human resources supporting the whole process of systematical approach in training and further development of employees. In order to confirm its applicability I describe the real system implementation. My master's thesis also includes supporting objectives to support the main objectives. The purpose of their use is to introduce the reader to the problematic of training and further development. Supporting objectives are: to introduce the issue of training and further development of employees in organizations, introduction of systematical approach to training of employees in organizations, introduction of methods and forms of education with a focus on e-learning and blended learning and introduction of learning management systems and learning content management systems.

This study explores teachers’ autonomy in relation to the implementation of a new Learning Management Systems (LMS). The purpose of this study is to study teachers’ work in relation to a new digital teaching tool to gain knowledge of how it can have impact on teacher autonomy. The research design was inspired by a mixed methods approach. The empirical data consists of a digital survey with 40 responding teachers, followed by six qualitative interviews with teachers. The research design later expanded by also including four qualitative interviews with school principles. The data was analyzed in light of Lortie’s (1969) conception of semi-professionals; Freidson’s (2001) theory of the logics of profession, market and bureaucracy; and Water’s (1989) theory of collegial structures. The result of this study indicates that the LMS has an impact on teacher’ autonomy by shifting focus from teaching for substantial knowledge to “teaching for the test”; and by giving parents and students a narrow insight into the teachers’ discretional work, which can challenge the discretion. However, the result also indicates that the teachers maintained autonomy by only using the LMS to a limited extent. This decision space, to choose whether or not use the tool, was understood as organized by the principals through collegial relations with the teachers.