Temporal management using relative time in knowledge-based process control

In this paper, a knowledge-based approach is proposed for the management of temporal information in process control. A common-sense theory of temporal constraints over processes/events, allowing relative temporal knowledge, is employed here as the temporal basis for the system. This theory supports duration reasoning and consistency checking, and accepts relative temporal knowledge which is in a form normally used by human operators. An architecture for process control is proposed which centres on an historical database consisting of events and processes, together with the qualitative temporal relationships between their occurrences. The dynamics of the system is expressed by means of three types of rule: database updating rules, process control rules, and data deletion rules. An example is provided in the form of a life scheduler, to illustrate the database and the rule sets. The example demonstrates the transitions of the database over time, and identifies the procedure in terms of a state transition model for the application. The dividing instant problem for logical inference is discussed with reference to this process control example, and it is shown how the temporal theory employed can be used to deal with the problem.

A framework for historical case-based reasoning

This paper presents a framework for Historical Case-Based Reasoning (HCBR) which allows the expression of both relative and absolute temporal knowledge, representing case histories in the real world. The formalism is founded on a general temporal theory that accommodates both points and intervals as primitive time elements. A case history is formally defined as a collection of (time-independent) elemental cases, together with its corresponding temporal reference. Case history matching is two-fold, i.e., there are two similarity values need to be computed: the non-temporal similarity degree and the temporal similarity degree. On the one hand, based on elemental case matching, the non-temporal similarity degree between case histories is defined by means of computing the unions and intersections of the involved elemental cases. On the other hand, by means of the graphical presentation of temporal references, the temporal similarity degree in case history matching is transformed into conventional graph similarity measurement.

For the record

Discusses her film, For the Record, the making of which was funded by the Arts and Humanities Research Council. The research material used in the making of FOR THE RECORD consists of official records, private diaries, personal testimony, historical expert interviews and archive footage - all related to the Internment period 1956-1960 in Northern Ireland. Through the use of clips from the film and footage that did not make it into the final cut, this talk examines how selected material is used and to what purpose. FOR THE RECORD is a film about a daughter documenting a period in her father's life and centres on PJ McClean's prison diary, secretly written on the inside of envelopes during the first 30 days in his cell. This brings the viewer into the intimate space of personal testimony. This intimacy is also reflected in the interviews between father and daughter. Throughout the film the diaries are illustrated by experimental Super8 and 16mm footage shot by the filmmaker, over a period of 10 years, of home life. The film unravels the complex story of internment; the why, the how and the ‘for what’? Official records obtained from the Public Records Office Northern Ireland (which have been closed to the public for the past fifty years) combine with archive footage of the then Northern Irish Prime Minister, Basil Brookeborough, to give a wider political perspective to this personal testament. FOR THE RECORD deals with memory, memorabilia and the question of testimony in a complex political landscape. [From the Author]

Historical highlights in organoarsenic chemistry

Organoarsenic compounds have given insight into important theoretical topics in chemistry and proved to have beneficial pharmacological effects