R. lee clark

Minimum Lee weights of Type II codes over F_2^r

This paper gives a complete list of Type II codes over F64 of length 8 up to an equivalence. This list provides an example of Type II code whose minimum Lee weight is depend of the choice of a trace-orthogonal basis. Such code was unknown to exist.

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...

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 ...