Preface to Volume 87

Preface to Volume 13

We also continue to publish work from many different disciplines and, particularly welcome, see that many of our articles represent collaborations between authors coming from different disciplines. Such broad representation and collaboration is the lifeblood of a transdiscipline. It is all too easy for a journal to gravitate towards a particular perspective on research. It is heartening to see ...

0175 - 7598 , Volume 87 , Number 2

Microorganisms synthesise a wide range of surface-active compounds (SAC), generally called biosurfactants. These compounds are mainly classified according to their molecular weight, physico-chemical properties and mode of action. The low-molecular-weight SACs or biosurfactants reduce the surface tension at the air/water interfaces and the interfacial tension at oil/water interfaces, whereas the...

Preface: the History of This Volume

User modeling is now approaching its second decade. Its exact age, however, is difficult to determine. Was it born in 1978, when Allen, Cohen, and Perrault started to publish their seminal papers on dialog processing in natural language systems based on Searle's theory of speech acts and the speaker's intentions behind it? Or was it in 1979, when Elain Rich reported on her GRUNDY system, which ...

PREFACE

Preface