Lincoln Dufton Clark, 1923–2002

Clark Glymour

Twenty years ago, Nancy Cartwright wrote a perceptive essay in which she clearly distinguished causal relations from associations, introduced philosophers to Simpson’s paradox, articulated the difficulties for reductive probabilistic analyses of causation that flow from these observations, and connected causal relations with strategies of action (Cartwright 1979). Five years later, without appr...

Katerina Clark

Reconsidering Clark

The use of Herbert Clark’s work as a theoretical framework in the Computer Supported Collaborative Work domain is often dismissed or judged as “cooked” and led to a large body of controversy. This article intends to reconsider his contribution and re-examined the criticisms he received. The main critics addressed to Clark are that his notion of Common Ground is far too mentalist and lacks “situ...

Lincoln Sea and Nares Strait

A winter phenomenon of ice break-up takes place in Lincoln Sea every year. A previous study based on ERS-1 SAR data has been resumed based on Radarsat data that is briefly reported here. The study of two winters, 1996-1997 and 1997-1998, is supported by wind data. It is found that the ice motion in the area often is driven by wind but also that it is seriously influenced by blocking at the entr...

Clark University

Rivers shape continental surfaces; they erode continental reliefs, transport erosion products and finally deposit them in plains. As a consequence, understanding physics of sediment transport is of fundamental importance in earth sciences. However, sediment transport occurs at the dynamical interface between fluid and granular mechanics, which makes its full understanding challenging. Over the ...