Digital literacy: Impacts of technology on learning from Generation Y

This article reports the results of a research project whose purpose was to understand the form of acquisition of digital literacy by Generation Y. The project goal was to identify how this new generation learns and uses Digital Technologies of Information and Communication (TDIC) in and out of school. It also sought to analyze how the domain of such technologies affects such generation’s performance in school. The digital literacy is understood here as a set of skills to read, write and interact with other people, mediated by digital technology devices, whose acquisition by Generation Y occurs at home, still in infancy. A questionnaire about socio-economic and technological development was applied, and the participants (children and adolescents aged 9 to 14) were filmed when performing learning activities in the school computer lab in order to observe what were their technological skills. The resultsindicated that exposure to early technological equipment makes the acquisition of digital literacy by Generation Y as natural as learningto walk and talk and bring in positive impacts on its school learning.Key words: digital literacy, technology, learning.</p

Challenge hypertext and survival strategies of the subject of contemporary

We are surrounded by hypertexts in our lives. Mostly of the information that flooded our daily lives are hypertextualized. Thus, new challenges of processing and production of mingled languages are imposed upon us, leading us to create semiotics and cognitive strategies to deal with such languages. What are they, what are the characteristics and how can we, intellectually; outlive the flow of hypertextualized data? This essay suggests some answers.KEY-WORDS: Hypertext. Hiper-reading. Languages. Enunciation Digital Mode.Vivemos cercados de hipertextos por todos os lados. Grande parte das informações que inundam nosso cotidiano estão hipertextualizadas. Por conseguinte, impõem-se-nos novos desafios de processamento e de produção de linguagens mescladas, conduzindo-nos a criar estratégias semióticas e cognitivas para lidar com tais linguagens. O que é, quais as características e como podemos sobreviver intelectualmente ao oceano de dados hipertextualizados? Este trabalho ensaia respostas.PALAVRAS-CHAVE: Hipertexto. Hiperleitura. Linguagens. Modo de Enunciação Digital. ABSTRACT We are surrounded by hypertexts in our lives. Mostly of the information that flooded our daily lives are hypertextualized. Thus, new challenges of processing and production of mingled languages are imposed upon us, leading us to create semiotics and cognitive strategies to deal with such languages. What are they, what are the characteristics and how can we, intellectually; outlive the flow of hypertextualized data? This essay suggests some answers.KEY-WORDS: Hypertext. Hiper-reading. Languages. Enunciation Digital Mode. &nbsp

Letramento digital: impactos das tecnologias na aprendizagem da Geração Y

This article reports the results of a research project whose purpose was to understand the form of acquisition of digital literacy by Generation Y. The project goal was to identify how this new generation learns and uses Digital Technologies of Information and Communication (TDIC) in and out of school. It also sought to analyze how the domain of such technologies affects such generation’s performance in school. The digital literacy is understood here as a set of skills to read, write and interact with other people, mediated by digital technology devices, whose acquisition by Generation Y occurs at home, still in infancy. A questionnaire about socio-economic and technological development was applied, and the participants (children and adolescents aged 9 to 14) were filmed when performing learning activities in the school computer lab in order to observe what were their technological skills. The resultsindicated that exposure to early technological equipment makes the acquisition of digital literacy by Generation Y as natural as learningto walk and talk and bring in positive impacts on its school learning.Key words: digital literacy, technology, learning.Esse artigo apresenta os resultados de uma pesquisa realizada sobre as formas de aquisição do letramento digital pela Geração Y. O objetivo foi identifi car como essa nova geração tem aprendido e utilizado as Tecnologias Digitais de Informação e Comunicação (TDIC) dentro e fora da escola. Os sujeitos informantes foram crianças e adolescentes, alunos do ensino fundamental de uma escola particular. Neste trabalho, o letramento digital é compreendido como a aquisição de um conjunto de habilidades para ler, escrever e interagir com a mediação de equipamentos digitais (computador off e on-line e telefone celular). Um questionário foi aplicado para a coleta de informações sobre ascondições socioeconômicas e tecnológicas dos sujeitos, bem como foi feita uma gravação em vídeo dos seus movimentos de aprendizagemnas atividades pedagógicas realizadas no laboratório de informática da escola, a fim de observar quais eram suas habilidades com tecnologias. Os resultados indicaram que a Geração Y, por estar exposta a equipamentostecnológicos desde cedo, tende a adquirir o letramento digital tão naturalmente quanto aprende a andar e a falar e acarreta impactospositivos no seu processo de aprendizagem escolar.Palavras-chave: letramento digital, tecnologia, aprendizagem

Corn Grain Yield and Potassium Uptake and Recycling as affected by Rootworm Resistance and Potassium Fertilization

New corn hybrids increase yield and may change potassium (K) uptake or fertilization needs through improved traits that increase yield and root efficiency. Hybrids, soil conditions, and rainfall may affect the rate at which K in cornstalks is released to the soil and becomes available to plant uptake. Therefore, a study was conducted from 2006 through 2009 at the Agronomy and Agricultural Engineering Research Farm to evaluate the effects of K fertilization and rootworm resistance on grain yield, K uptake, and K recycling with residue

Measurement of resistance curves in the longitudinal failure of composites using digital image correlation

This paper presents a new methodology to measure the crack resistance curves associated with fiber-dominated failure modes in polymer–matrix composites. The crack resistance curves not only characterize the fracture toughness of the material, but are also the basis for the identification of the parameters of the softening laws used in the numerical simulation of fracture in composite materials. The proposed method is based on the identification of the crack tip location using Digital Image Correlation and the calculation of the J-integral directly from the test data using a simple expression derived for cross-ply composite laminates. It is shown that the results obtained using the proposed methodology yield crack resistance curves similar to those obtained using Finite Element based methods for compact tension carbon–epoxy specimens. However, it is also shown that, while the Digital Image Correlation based technique mitigates the problems resulting from Finite Element based data reduction schemes applied to compact compression tests, the delamination that accompanies the propagation of a kink-band renders compact compression test specimens unsuitable to measure resistance curves associated with fiber kinking

A Conceptual approach to tourism typology. A classification proposal

Durante las últimas décadas el turismo se ha convertido en una actividad en la que la oferta y la demanda han aumentado su diversidad. Esta es una de las razones que explican la multiplicación de los tipos de turismo (turismo de golf, birdwatching, etc.). Junto a estas tipologías se presentan otras más difíciles de conceptualizar. Para evitar confusiones resulta necesario contar con unas pautas claras de clasificación de tipos de turismo. El presente artículo de investigación aborda una propuesta de clasificación de tipologías a partir de una serie de criterios básicos previamente definidos.During these past decades, tourist supply and demand have both diversified. This is one major reason why different types of tourism have multiplied (golf tourism, birdwatching, etc.) Along with these typologies, there are others that are more difficult to conceptualise. To avoid this confusion, clear guidelines are necessary in order to classify types of tourism. The present article sets out a proposal to classify tourist typologies or modalities based on a series of previously defined basic criteria

O hipertexto na sociedade da informação : a constituição do modo de enunciação digital

Orientador: Ingedore Grunfeld Villaça KochTese (doutorado) - Universidade Estadual de Campinas, Instituto de Estudos da LinguagemResumo: O presente trabalho faz uma abordagem lingüística do Hipertexto enquanto nova tecnologia enunciativa, do qual emerge o modo de enunciação digital. Com os pressupostos teóricos do Interacionismo Social, da Ungüística Textual e da Lingüística Cognitiva, são apresentadas as características que diferenciam texto de Hipertexto, as implicações lingüísticas,cognitivas e interacionais para o processamento da leitura realizada em Hipertextos on-line no tocante às formas de fazer referência, aos tipos, às formas enunciativas e às funções desempenhadas pelos hiperlinks ancorados nas páginas Web e as vinculações entre Hipertexto e Pós-Modernidade. Observou-se que a convergência de modos de enunciação, em um mesmo suporte de percepção, a tela do computador, permite ao hiperleitor vivenciar uma experiência sinestésica de leitura, na qual palavras, imagens e sons se fundem, digitalmente, para produzir sentidos. O resultado da enquete realizada com pós-graduandos e as análises feitas em um portal de acesso à Internet de um grande provedor brasileiro (UOL)e em três sites de pesquisadores importantes em suas áreas de atuação profissional (um lingüista, um psicanalista e um semioticista) apontaram para o surgimento do modo de enunciação digital,ainda em fase de implantação, e cuja consolidação está condicionada ao aumento do acesso aos diversos setores da sociedade e aos ajustes técnicos que vêm sendo feitos nos equipamentos informáticos que o viabilizamAbstract: This thesis is a linguistic study of Hypertext as a new enunciative technology from which the digital form of enunciation emerges. Its main objective is to show that Hypertext makes the digital form of enunciation possible. Based on theories like Social Interactionism, Textual Linguistics and Cognitive Linguistics, we describe the characteristcs which differentiate text from Hypertext on-line. We also describe how the users make digital references, the different types and functions of hyperlinks in the web and we analyze the relationship between Hypertext and the Postmodernism. ... Note: The complete abstract is available with the full electronic digital thesis or dissertationsDoutoradoDoutor em Linguístic

Modelagem de características dinâmicas de instrumentos de medição

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Metrologia Científica e IndustrialO presente trabalho teve como objetivo desenvolver um método para modelar as características dinâmicas de instrumentos de medição. Esta atividade faz parte de um conjunto de trabalhos que vêm sendo executados junto ao Laboratório de Metrologia e Automatização da UFSC visando desenvolver um sistema de simulação de instrumentos de medição. Os valores das características do comportamento dinâmico são obtidos das especificações dos fabricantes de instrumentos. Esses valores, após passarem por um processo de escolha, são as entradas dos modelos dessas características. Esses foram feitos de forma modular, visando otimizar a sua utilização em diversos modelos de instrumentos. Foram implementados através de equações de diferenças, possibilitando sua simulação em ambientes discretos. Foi feita comparação entre a aplicação de sinais padronizados em tais modelos e nos correspondentes modelos matemáticos tradicionais que empregam equações diferenciais. Quantificaram-se as diferenças entre os resultados obtidos através das duas formas de abordagem. Foi constatada a plena adequação dos modelos propostos. Como exemplos do método foram implementados, utilizando-se a linguagem LabView, dois modelos de instrumentos: um termistor, composto por uma única característica dinâmica e um amplificador de instrumentação, composto de várias características dinâmicas

Bayesian networks for disease diagnosis: What are they, who has used them and how?

A Bayesian network (BN) is a probabilistic graph based on Bayes' theorem, used to show dependencies or cause-and-effect relationships between variables. They are widely applied in diagnostic processes since they allow the incorporation of medical knowledge to the model while expressing uncertainty in terms of probability. This systematic review presents the state of the art in the applications of BNs in medicine in general and in the diagnosis and prognosis of diseases in particular. Indexed articles from the last 40 years were included. The studies generally used the typical measures of diagnostic and prognostic accuracy: sensitivity, specificity, accuracy, precision, and the area under the ROC curve. Overall, we found that disease diagnosis and prognosis based on BNs can be successfully used to model complex medical problems that require reasoning under conditions of uncertainty.Comment: 22 pages, 5 figures, 1 table, Student PhD first pape

A New Long-term Study: Evaluation of Hybrid, Nitrogen, and Potassium Interactions in Continuous Corn

A long-term experiment was established in 2009 to study continuous corn responses to potassium (K), nitrogen (N), and hybrid rootworm resistance. Previous research suggested a need for this type of study in Southeast Iowa. A long-term trial conducted until 2001 at the Northern Research Farm in a soil testing low in P and K showed that N, P, and K fertilizers greatly increased corn yield but there was an interaction only between N and K. The maximum corn yield level, the relative yield response to N (percent increase for each N addition), and the N rate that maximized yields were highest when K was optimal or higher. In contrast, the relative yield response to N and the N rate that maximized yield were similar for soil-test P levels ranging from very low to very high. Ongoing studies at this research farm and four other farms show that rootworm resistance often increases yield compared with untreated susceptible hybrids. It does not affect the yield response to K consistently, but increases K removal because of the higher yields. Therefore, this new long-term study evaluates possible interactions between corn rootworm resistance, N fertilization, and K fertilization