69,241 research outputs found

    How do I enhance motivation to learn and higher order cognition among students of Science through the use of a virtual learning environment?

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    In this paper I explore the capacity of Moodle to enhance the teaching and learning of Leaving Certificate Biology within a small urban secondary school. I simultaneously investigate the potential of the technology to enhance higher-order cognition and motivation to learn among the students. Adopting an action research approach has led me to a much deeper understanding of the tacit knowledge that inspires my work. The chief stimulus to my research was the realisation that my explicit practice was in negation of my implicit values. I have come to know my practice and over time changed it. I can now see evidence of a greater congruence between my espoused core educational values and my explicit actions. Cycle one of the research focuses on setting up and introducing Moodle to a group of Biology students. The second cycle shows the feasibility of a community of enquiry through a discussion-forum. A process of social validation runs concurrently, in which interested individuals substantiate my claim that my core educational values are being translated into my practice. Throughout I learn to strike a balance between co-learner and guide. Consequently the students come to act as co-authors in moving away from authoritarian dissemination of facts. This facilitates a community of inquiry, revolving around the collaborative negotiation of meaning. There is clear evidence of increased higher-order cognition and motivation to learn among the participants within this virtual community

    Events and Controversies: Influences of a Shocking News Event on Information Seeking

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    It has been suggested that online search and retrieval contributes to the intellectual isolation of users within their preexisting ideologies, where people's prior views are strengthened and alternative viewpoints are infrequently encountered. This so-called "filter bubble" phenomenon has been called out as especially detrimental when it comes to dialog among people on controversial, emotionally charged topics, such as the labeling of genetically modified food, the right to bear arms, the death penalty, and online privacy. We seek to identify and study information-seeking behavior and access to alternative versus reinforcing viewpoints following shocking, emotional, and large-scale news events. We choose for a case study to analyze search and browsing on gun control/rights, a strongly polarizing topic for both citizens and leaders of the United States. We study the period of time preceding and following a mass shooting to understand how its occurrence, follow-on discussions, and debate may have been linked to changes in the patterns of searching and browsing. We employ information-theoretic measures to quantify the diversity of Web domains of interest to users and understand the browsing patterns of users. We use these measures to characterize the influence of news events on these web search and browsing patterns

    Growing trees in Internet news groups and forums

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    We present an empirical study of the networks created by users within internet news groups and forums and show that they organ- ise themselves into scale-free trees. The structure of these trees depends on the topic under discussion; specialist topics have trees with a short shallow structure whereas more universal topics are discussed widely and have a deeper tree structure. For news groups we find that the distribu- tion of the time intervals between when a message is posted and when it receives a response exhibits a composite power-law behaviour. From our statistics we can see if the news group or forum is free or is overseen by a moderator. The correlation function of activity, the number of messages posted in a given time, shows long range correlations connected with the users’ daily routines. The distribution of distances between each message and its root is exponential for most news groups and power-law for the fo- rums. For both formats we find that the relation between the supremacy ( the total number of nodes that are under the node i, including node i) and the degree is linear s(k) k, in contrast to the analytical relation for Barab´asi-Albert network

    How the Internet changed science journalism

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    An integrated ranking algorithm for efficient information computing in social networks

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    Social networks have ensured the expanding disproportion between the face of WWW stored traditionally in search engine repositories and the actual ever changing face of Web. Exponential growth of web users and the ease with which they can upload contents on web highlights the need of content controls on material published on the web. As definition of search is changing, socially-enhanced interactive search methodologies are the need of the hour. Ranking is pivotal for efficient web search as the search performance mainly depends upon the ranking results. In this paper new integrated ranking model based on fused rank of web object based on popularity factor earned over only valid interlinks from multiple social forums is proposed. This model identifies relationships between web objects in separate social networks based on the object inheritance graph. Experimental study indicates the effectiveness of proposed Fusion based ranking algorithm in terms of better search results.Comment: 14 pages, International Journal on Web Service Computing (IJWSC), Vol.3, No.1, March 201
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