We shall say that C is a set of conflicting literals if and only if we do not want every element of C to be provable. Defeasible Logic is generalised to incorporate sets of conflicting literals. The resulting logic is more expressive and yields better solutions to some reasoning puzzles. Some properties of this generalised Defeasible Logic are proved.

We consider the two-fold problem of representing collective beliefs and aggregating these beliefs. We propose modular, transitive relations for collective beliefs. They allow us to represent conflicting opinions and they have a clear semantics. We compare them with the quasi-transitive relations often used in social choice. Then, we describe a way to construct the belief state of an agent infor...

Cutting and Rosner lPerception & Psychophysics, 1974, 16, 564-570} reported that sawtooth wavetrains were perceived categorically when an array was varied in linear rise time increments. That is, rapid rise time stimuli were identified as plucked strings and slower rise time stimuli as bowed strings, and pluck-bow comparisons were relatively easy to discriminate but pluck-pluck and bow-bow comp...

Putting children to bed is an everyday practice but under-studied in childhood research. Findings from this study of eight popular self-help parenting books for 2-to-5-year-olds show that the rarely, if ever, consider have voice/s, or social competence. Where child does appear, it was be silenced. Centrally, authors push failure and responsibility onto parents. We found advice crystallised arou...

Scientific activities strongly depend on concepts and classifications to represent the world in an orderly workable manner. This creates a trade-off. On one hand, it is important leave space for conceptual classificatory criticism. other agreement which use, often crucial communication integration of research ideas. In this paper, we show that trade-off can sometimes best be resolved through go...