1,720,954 research outputs found
Automatic content adaptation applied in an interactive environment with individualized learning.
No full textSistemas tutores inteligentes têm se destacado como ferramenta de apoio ao ensino, principalmente pela sua adaptação às condições do usuário e cenário de aplicação. Esta adaptabilidade é possível pela utilização de inteligência artificial. Além disso, a tarefa de ensino é melhor conduzida aplicando-se técnicas como aprendizagem de máquina, processamento de linguagem natural e mineração de dados para adequar o sistema a partir de informações coletadas do usuário em sua utilização.
Apesar disso, essas técnicas ainda não são fortemente exploradas para geração de conteúdo em sistemas tutores. A maioria das aplicações envolve o controle das informações e a orientação dos estudos de seus usuários por meio de recomendação de conteúdo existente. A produção de conteúdo personalizado surge, nesse cenário, como alternativa ao processo de simples recomendação, permitindo que conteúdos apresentem diferentes formatos segundo a personalidade de cada usuário.
Este trabalho desenvolveu uma metodologia de adaptação de conteúdo para ensino, aplicando técnicas de processamento de texto. O processo de produção de conteúdo personalizado permitiu um avanço na forma de uso de sistemas tutores no ensino quanto a geração de conteúdo. Como resultado foi obtido um modelo, com ferramenta aplicada ao contexto, para adaptação automática de conteúdo construído com base em estilos de aprendizagem.Intelligent tutoring systems have stood out as a teaching support tool, mainly due to their ability to adapt to user conditions and application scenarios. This adaptability is possible through the use of artificial intelligence. Furthermore, the creation and adaptation of materials for the system is best conducted by applying techniques such as machine learning, natural language processing and data mining. Despite this, these techniques are not yet heavily explored for generating content in tutoring systems. Most applications involve controlling information and guiding their users' studies by recommending existing content. The production of personalized content appears, in this scenario, as an alternative to the simple recommendation process, allowing content to present different formats according to the personality of each user.
This work developed a methodology for adapting teaching content, applying natural language processing techniques. The process of producing personalized content allowed an advance in the way tutoring systems are used in teaching regarding content generation. As a result, a model was obtained, with a tool applied to the context, for automatic adaptation of content based on learning styles
Modeling of tasks interactions using graphical interfaces applied in real-time systems
No full textA análise de sistemas computacionais por meio de simulação depende fortemente de como as tarefas a serem executadas serão modeladas. Isso é ainda mais importante quando se fala de sistemas de tempo-real, em que tarefas devem ser atendidas dentro dos intervalos corretos e a análise por simulação evita perigos possivelmente presentes se executadas no ambiente real. Entretanto, simuladores de tarefas tipicamente as modelam como blocos independentes de carga de trabalho. Embora isso seja correto ou aceitável em muitas situações, isso não é sempre verdade em sistemas de tempo-real, pois normalmente aplicações desse tipo apresentam relações de dependência entre si. Em alguns simuladores isso é resolvido com a escrita do modelo de tarefa em alguma linguagem de modelagem específica, o que evidentemente dificulta o trabalho de simulação se comparado com abordagens gráficas. Desse modo, aqui se propõe uma abordagem que permita a modelagem de interações entre tarefas, em especial de tempo-real, por meio de interfaces visuais, sem comprometer a corretude do motor de simulação. A modelagem visual permite que o usuário se concentre no problema a ser avaliado e não na programação de seus detalhes, melhorando a eficiência desse processo. Na abordagem proposta se parte do conceito de árvores hierárquicas para estabelecer associações entre tarefas, elementos de processamento e recursos do sistema. As relações previstas entre tarefas incluem precedência, sincronismo, paralelismo e exclusão mútua. A validação dessa abordagem ocorre com sua aplicação no simulador de algoritmos de escalonamento RTsim, que já apresenta características interessantes de simulação, como interfaces para modelagem de escalonadores e de auxílio ao ensino. Assim como outros simuladores, o RTsim originariamente trata tarefas como blocos independentes de carga de trabalho, o que facilita a verificação dos efeitos desta abordagem na modelagem. Os resultados obtidos mostram que os procedimentos de modelagem de relações entre tarefas, na forma como definidos aqui, são aplicáveis em simuladores de eventos discretos, conforme avaliações de sua correção e usabilidade.Analysis of computing systems through simulation is strongly dependent of how tasks to be executed are modeled. This is even more important in real-time systems, where tasks must be executed before their deadlines, and their simulation avoid possible risks present in the real environment. However, simulators of such tasks usually model them as independent load blocks. Although this is correct for many systems, it is not always true for real-time systems, where applications usually have dependence relationships between tasks. In some simulators this is solved by enforcing the user to write the model in some modeling or simulation language, clearly making the simulation harder when compared to graphical approaches. Therefore, a graphical approach for task modeling is proposed. This approach is specially aimed to real-time tasks and does not compromise simulation accuracy. Graphical, that is visual, modeling allows for the user to focus on the problem to be evaluated and not in programming details of the system, improving the efficiency of this process. This proposal is based on the hierarchical tree concept to establish associations between tasks, processing elements and system resources. Chosen relationships include precedence, synchronism, parallelism and mutual exclusion. This proposal is validated through its application in a simulator of real-time scheduling algorithms named RTsim, which already offers interesting modeling/simulation characteristics such as interfaces to model schedulers and to teaching. RTsim, as others simulators do, models its tasks as independent blocks, what facilitates the verification of this approach effects to modeling. The results achieved with the tests show that procedures for modeling relationships between tasks, as defined in this dissertation, are applicable to discrete event simulators, according to the evaluations of this correctness and usability.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPESP: Proc 2017/06737-
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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