Brian Roberts. Biographical Research

Research Statement Brian

If ε is a positive constant, a family of graphs {Gi}i∈I is called a family of ε-expanders if infi∈I h(Gi) > ε. That is, if the Cheeger constants h(Gi) are uniformly bounded away from zero by ε. Historically, explicit examples of families of expander graphs have been difficult to construct. The earliest constructions arose as Cayley-Schreier graphs of lattices of Lie groups of higher rank. Let u...

Biographical research Principles and Practice in

Sir Peter Brian Medawar ’ S Transplantation Research

Sir Peter Medawar experimentally demonstrated immunological tolerance through his tissue transplantation experiment in the early and mid-1950s. He made a central contribution to modern biomedicine by showing that genetically distinct cells introduced into a body during its foetal phase could not only be permanently tolerated but also make the host accept any subsequent skin grafts from the orig...

Statement of Research for Brian Scassellati

1. We explore the boundaries of human social abilities by studying human-robot interaction. Social robots operate at the boundary of cognitive categories; they are animate but are not alive, are responsive but are not creative or flexible in their responses, and respond to social cues but cannot maintain a deep social dialog. By systematically varying the behavior of the robot, we can chart the...

Biographical learning: two decades of research and discussion

The article discusses the concept of biographical learning and reviews previous research on the subject. Several tensions between different versions of the concept are recognized, and a wide range of research areas in which the concept has been used are identified and presented. The general idea in the biographical learning tradition regarding the occurrence of general conceptions of one’s biog...