This paper discusses issues, possibilities and existing approaches for fitting an exception handling mechanism (EHM) in CSP-based process-oriented software architectures. After giving a survey on properties desired for a concurrent EHM, specific problems and a few principal ideas for including exception handling facilities in CSP-designs are discussed. As one of the CSP-based frameworks for con...

An experimental study of asynchronously communicating dyads tested the claim that conceptual representations could more effectively support collaborative knowledge construction in online learning than threaded discussions. Results showed that users of conceptual representations created more hypotheses earlier in the experimental sessions and elaborated on hypotheses more than users of threaded ...

Gordon Pask developed not only a Conversation Theory, but also a (less well-known) Interaction of Actors Theory, partly in response to demands during the time he worked in Amsterdam. The paper aims to clarify how this Theory intended to minimise the effcts of use on scientific results, while maximimising the help such results to improve on actions. This would facilitate empirical study of what ...

Recent progress in real-time simulations has led to a higher demand for believability from virtual characters. Background characters are becoming a more integral part of games, with emphasis being placed in particular on interactions between them. Conversing groups can play a significant role in adding plausibility, or a sense of presence, to a real-time simulation. However, it is not obvious h...

Despite the abundance of research investigating general and academic vocabularies and developing dozens of word lists, few studies have compared academic vocabulary with general service word lists such as conversation vocabulary. Many EAP researchers assume that university students need to know all the words in West’s (1953) General Service List (GSL) as a prerequisite to academic words (e.g., ...

In 1969, Gordon Pask published a paper that explicitly proposed a vital connection between cybernetics and architecture. “The Architectural Relevance of Cybernetics” (Pask, 1969) was one outcome of an extraordinary series of debates and presentations centred around the theme of limits to science presented at the Architectural Association School of Architecture (AA) in London. The proceedings we...

In this paper, we present a set of measures to quantify certain properties of threaded discussions, which are ubiquitous in online learning platforms. In particular, we address how to measure the redundancy of posts, the compactness of topics, and the degree of hierarchy in sub-threads. This preliminary work would very much benefit from discussion and serves as a starting point for ultimately c...

The rapid growth of the Internet, coupled with improved multimedia capabilities in computing, has expanded the options for using technology to support collaborative learning. Asynchronous electronic conferencing is commonly used to support distributed discourse-based learning. Mind Bridges is a Web-based threaded discussion forum with support for embedded multimedia content. This paper describe...