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    Agents for navigating virtual reality E-commerce environments

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    We report about work in progress on capabilities of navigation agents in virtual environments. These agents may help a user to explore the environment: where to go, where to buy, where to find, etc. The agents may make suggestions based on a user profile, earlier visits and earlier given advice and these agents may exchange information with other types of agents that may be useful for the visitor or the environment or for the owner of the environment. In our case the environment consists of a multi-purpose theatre building where visitors can get information about performances, but also can make reservations for these performances (buy tickets). Environments like these can be viewed from different perspectives, e.g., an e-commerce perspective (an electronic shop), a community perspective (a market and performance place) where people can meet each other, or an edutainment perspective (people can learn about professional activities that take place, e.g., learning to play an instrument, take part in a performance, design a choreography, etc.). Here we concentrate on navigation in these virtual environments. How can we assist the user in finding its way in such complex and information rich environments? Presently we maintain different subprojects in which navigation aspects of virtual environments are studied. Common characteristics of these subprojects are the use of embodied conversational agents and multimodal interaction between users and embodied agents

    Task planning strategies for flexible manufacturing cells - by Milad Fares Sebaaly

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    Thesis (M.E.)-- American University of Beirut. Department of Electrical and Computer Engineering, 1994.;"Advisor: Dr. FuadMrad, Assistant Professor, Electrical Engineering -- Members of Committee: Dr. Karim Kabalan, Associate Professor, Electrical EngineBibliography: leaves 114-116.This thesis addresses the planning strategies associated with Flexible Assembly Systems. Its aim is merely to obtain a theoretical representative and practical picture of the performance of some assembly planning tasks and the role of robotic manipulator

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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
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