Analysis of the Asymmetric Continuous Director Rotation Mode of Ferroelectric Liquid Crystal Displays

A very simple analytical model is given of the asymmetric continuous director rotation mode of ferroelectric liquid crystal displays. This model clearly illustrates the basic principles on which this mode is based, and allows easy parameter estimation. It is applied to transmission-voltage characteristics, switching times, and ion characterization. 1

General discussion

Around a century ago John Dewey (2015) questioned the idea of schooling with a mandatory focus on classroom based studies only. Today, after a century of rapid technological development and vivid didactic discussions the classroom focus still remains. New portable, interconnected and omnipresent 21st century technology opens up possibilities for a spatial independent ubiquitous learning in the spirit of Dewey (Cope & Kalantzis, 2010). This study had the aim to explore and discuss the potential of using location-based games as a catalyst for outdoor activities in formal education. In what ways might a location-based and augmented reality unlock the constraint of traditional classrooms?   The overall research strategy has been the case study approach where data has been gathered by spy glasses, hand-held video cameras and group interviews. Two outdoor teaching and learning activities were the two main case units. In the walking sessions K12 students played Pokémon Go to learn about local history and mathematics. Around 1 TB of video clips have been thematically analysed with the use of the computer-assisted qualitative data analysis software tool NVivo. Patterns and themes found in the video analysis have been compared to themes in the answers from the group interviews.   Analysis themes related to location-based gaming were Discussions, Outdoor activities and Gaming and gender. Findings indicate that the use of a location-based game can be motivating and a way to unchain students’ sit-down 'enchairment'. However, game-based outdoor activities seem to have more reliable learning outcomes if they are combined with follow-up activities in the classroom. Physically active students also tend to have more active discussions than sitting students in a classroom. Finally, boys and girls seem to have different collaboration patterns during the gaming sessions.