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—When regarding the concept of the " user " in the context of HCI there appears to be consensus on what a user is. Is this consensus real agreement or is it just apparent? This paper presents a benchmark definition derived from analysis of a basic dictionary definition. It suggest a manner of comparison with this definition in order to reveal digressions(More)
A knowledge of stellar ages is crucial for our understanding of many astrophysical phenomena, and yet ages can be difficult to determine. As they become older, stars lose mass and angular momentum, resulting in an observed slowdown in surface rotation. The technique of 'gyrochronology' uses the rotation period of a star to calculate its age. However, stars(More)
This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. It is sold on the understanding that the Publisher is not engaged in rendering professional services. If professional advice or other expert assistance is required, the services of a competent professional should be sought. Wiley also(More)
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