45,293 research outputs found

    Hybridisation for versatile decision-making in game opponent AI

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    Hybridisation for versatile decision-making in game opponent A

    An automatic visual analysis system for tennis

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    This article presents a novel video analysis system for coaching tennis players of all levels, which uses computer vision algorithms to automatically edit and index tennis videos into meaningful annotations. Existing tennis coaching software lacks the ability to automatically index a tennis match into key events, and therefore, a coach who uses existing software is burdened with time-consuming manual video editing. This work aims to explore the effectiveness of a system to automatically detect tennis events. A secondary aim of this work is to explore the bene- fits coaches experience in using an event retrieval system to retrieve the automatically indexed events. It was found that automatic event detection can significantly improve the experience of using video feedback as part of an instructional coaching session. In addition to the automatic detection of key tennis events, player and ball movements are automati- cally tracked throughout an entire match and this wealth of data allows users to find interesting patterns in play. Player and ball movement information are integrated with the automatically detected tennis events, and coaches can query the data to retrieve relevant key points during a match or analyse player patterns that need attention. This coaching software system allows coaches to build advanced queries, which cannot be facilitated with existing video coaching solutions, without tedious manual indexing. This article proves that the event detection algorithms in this work can detect the main events in tennis with an average precision and recall of 0.84 and 0.86, respectively, and can typically eliminate man- ual indexing of key tennis events

    Jihad online : how do terrorists use the internet?

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    Terrorism is designed to attract attention to the terrorist's cause and to spread fear and anxiety among wide circles of the targeted population. This paper provides information about the ways terrorists are using the Internet. The threat of terrorism is real and significant. As the Internet becomes a major arena for modern terrorists, we need to understand how modern terrorism operates and devise appropriate methods to forestall such activities

    Rethinking sport teaching in physical education: A case study of research based innovation in teacher education

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    This paper focuses on the significance of physical education teacher education (PETE) in the diffusion of 'new' thinking about sport teaching in physical education. It explores issues arising from a case study investigation that sought to respond to the critical commentary about the form and substance of sport teaching in physical education by supporting innovation in school curriculum and pedagogy through pre-service teacher education. The study was designed to challenge PETE pre-service teachers' thinking about sport curriculum and pedagogy in physical education, introduce them to new thinking about models and specifically, the sport literacy model (Drummond & Pill, 2011; Pill, 2009, 2010). Details of the research design are presented and the insights that the data have provided in relation to challenges and opportunities that teacher educators and teacher education courses confront in seeking to promote and support curriculum and pedagogical innovation are discussed

    The Burden of Choice, the Complexity of the World and Its Reduction: The Game of Go/Weiqi as a Practice of "Empirical Metaphysics

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    The main aim of the text is to show how a game of Go (Weiqi, baduk, Igo) can serve as a model representation of the ontological-metaphysical aspect of the actor–network theory (ANT). An additional objective is to demonstrate in return that this ontological-metaphys⁠ical aspect of ANT represented on Go/Weiqi game model is able to highlight the key aspect of this theory—onto-methodological praxis

    Creating a Foursquare Communications Platform: Easy Steps to Build the Communications Capacity of Your Grantees

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    Spitfire Strategies specializes in building the capacity of foundations and their grantees to plan and implement highly successful communications strategies. Over the past seven years, we have learned a lot about the right way to approach capacity building -- and the wrong way. This document offers foundations a few of the lessons we have learned when it comes to offering capacity-building opportunities to grantees
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