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    Editorial

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    Asymptotic Giant Branch Variables in the Galaxy and the Local Group

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    AGB variables, particularly the large amplitude Mira type, are a vital step on the distance scale ladder. They will prove particularly important in the era of space telescopes and extremely large ground-based telescopes with adaptive optics, which will be optimized for infrared observing. Our current understanding of the distances to these stars is reviewed with particular emphasis on improvements that came from Hipparcos as well as on recent work on Local Group galaxies. In addition to providing the essential calibration for extragalactic distances Gaia may also provide unprecedented insight into the poorly understood mass-loss process itself.Comment: Accepted for publication in Astrophysics and Space Science. From a presentation at the conference "The Fundamental Cosmic Distance Scale: State of the Art and Gaia Perspective, Naples May 2011. 8 Pages, 9 Figure

    Piloting a new approach: Making use of technology to present a distance learning computer science course

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    Computer‐Mediated Communication (CMC) systems have been described and evaluated in a number of ways by different researchers in the field. This paper proposes that computer conferencing systems should be designed to encourage students to participate in three dimensions previously treated by separate researchers. These can be summarized as a knowledge dimension, a social dimension and a motivational dimension. This paper reports on how one particular conference, that of M205‐STILE, was constructed to take account of these dimensions and to facilitate students’ computer‐supported cooperative learning
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