The 2018 GaN power electronics roadmap

Gallium nitride (GaN) is a compound semiconductor that has tremendous potential to facilitate economic growth in a semiconductor industry that is silicon-based and currently faced with diminishing returns of performance versus cost of investment. At a material level, its high electric field strength and electron mobility have already shown tremendous potential for high frequency communications and photonic applications. Advances in growth on commercially viable large area substrates are now at the point where power conversion applications of GaN are at the cusp of commercialisation. The future for building on the work described here in ways driven by specific challenges emerging from entirely new markets and applications is very exciting. This collection of GaN technology developments is therefore not itself a road map but a valuable collection of global state-of-the-art GaN research that will inform the next phase of the technology as market driven requirements evolve. First generation production devices are igniting large new markets and applications that can only be achieved using the advantages of higher speed, low specific resistivity and low saturation switching transistors. Major investments are being made by industrial companies in a wide variety of markets exploring the use of the technology in new circuit topologies, packaging solutions and system architectures that are required to achieve and optimise the system advantages offered by GaN transistors. It is this momentum that will drive priorities for the next stages of device research gathered here

Toward understanding the potential of games for learning: Learning theory, game design characteristics, and situating video games in classrooms

Researchers have argued that an effort should be made to raise teachers' and parents' awareness of the potentially positive educational benefits of playing video games (e.g., see Baek, 2008). One part of this effort should be to increase understanding of how video games can be situated within teachers' existing goals and knowledge of learning and instruction. However, relatively little research on game-based learning addresses teachers (Ketelhut & Schifter, 2011), and for many a gap remains between the apparent enthusiasm of researchers and policy makers relative to the potential of educational games and the attendant practicalities of selecting and implementing video games in classroom settings. This article begins to bridge this gap by providing research-based areas of awareness and a discussion of factors that can facilitate understanding related to choosing and using video games. To this end, we show how educational games can be conceptualized from different theoretical perspectives on learning and discuss a number of essential design issues that educators should take into account when considering a video game for educational use

Moved to learn: The effects of interactivity in a Kinect-based literacy game for beginning readers

Reading to young children has a number of benefits, including supporting the acquisition of vocabulary and literacy skills. Digital reading games, including ones with new modes of interface such as the Kinect for Xbox, may provide similar benefits in part by allowing dynamic in-game activities. However, these activities may also be distracting and detract from learning. Children (ages 5-7 years, N = 39) were randomly assigned to either i) jointly read a story with an adult, ii) have the story read by a character in a Kinect game, or iii) have the story read by a character in a Kinect game plus in-game activities. Both Kinect-Activities and Book Reading groups had significant gains for High Frequency Words, Active Decoding, and Total Reading Score, but only Kinect-Activities group had significant gain for Sight words (p <.05). Overall, these findings are encouraging for the next generation of digital literacy games