Progress in Mobile Commerce is heavily dependent upon effective and reliable payment mechanisms. Security concerns loom as a major impediment to widespread and rapid adoption, and there is accordingly an urgent need for a framework within which security issues in mobile commerce can be evaluated. This paper draws on lessons from prior payment mechanisms in order to present such a framework. It ...

IS love for sale? Maybe not quite as directly as sex is, but economists believe that the quest for a romantic partner obeys essentially the same cost-benefit logic that governs every other market. Economists may seem soulless, unlikely guides to affairs of the heart. But " Dollars and Sex, " a delightful book by Marina Adshade, an economist at the University of British Columbia, may convince yo...

If you are an Englishman you will begin by being irritated by Mr. Kaufman?I almost wrote " by having Mr. Kaufman irritate you "?such is the obtrusiveness of the American idiom when the title page has given you no inkling Mr. Kaufman is not London based. But this mere pettifog that carps. The main irritation is the slow build-up of the tale. Mr. Kaufman is in no mood to jag his backcloth with ey...

This paper discusses the semantics and usage of rei cation as applied to relations and tuples. The rei cation of a tuple is a proposition object possessing a case role for each domain attribute in the tuple. The rei cation of a set of llers of a role is an object sometimes referred to as a \roleset". In the course of de ning rei cation mechanisms for the Loom knowledge representation system, we...

The relationship between structure and function in the brain has an interesting counterpart in the scientific relationship of Santiago Ramon y Cajal and Charles Sherrington. In their search for the principles of organization of the nervous system, both men met at the synapse. For Sherrington, who coined the word 'synapse', the neuron was the functional unit that integrated excitatory and inhibi...

In 1965 the Draper Corporation (Draper), the largest domestic textile machine manufacturer, was the 500th largest industrial corporation in the United States [9, July 1965]. Draper had been the world-wide textile machinery technology leader from the development of ring spinning in the 1870s and 80s through the development of automatic looms at the turn of the century and high-speed looms in the...

This paper reports our experience in using the KADS framework to describe problem-solving methods. We explore the concept the domain view in providing both usability and reusability of knowledge. To illustrate our work, we implement Cover&Diierentiate with the knowledge representation language Loom, using as a reference the formal description of C&D made in (ML) 2. We concentrate on Loom primit...

In this position paper we provide arguments for the following main points: (1) Formal knowledge representation and well-founded inference processes can help to clarify, unify and support the construction of image interpretation systems. (2) Today's terminological systems (like LOOM) fail to support basic image interpretation inference strategies, in particular hypothesis generation and spatial ...