This paper is a progress report on the Spike scheduling system, developed by the Space Telescope Science Institute for long-term scheduling of Hubble Space Telescope observations. Spike is an activitybased scheduler which exploits AI techniques for constraint representation and for scheduling search. The system has been in operational use since shortly after HST launch in April 1990. Spike has ...

Violence and assaults by residents against staff or other residents in the long-term care system are a major public health concern. Direct care workers in long-term care facilities (LTCs) are the workers at highest risk to suffer from workplace violence (eg, grabs, chokes, hair pulls, kicks, hits, bites) and injury as a result of interactions with residents. Aggressive behavior in the form of t...

We consider a scheduling problem for packet based wireless systems with time-varying channel conditions. Designing scheduling mechanisms that take advantage of time-varying channel conditions, which are different for different users, is necessary to improve the wireless system performance. Such scheduling mechanisms are called opportunistic. In this paper we formulate an opportunistic schedulin...

Production management is a set of decisions that must reflect a compromise between customers’ satisfaction and production criteria such as cost, delay and quality. The goal of production management is to ensure the continued success of the firm. Industrial planning plays a central part in this one. The latter can be divided into three hierarchical decisional levels: the strategic level deals wi...

Open pit mine design and production scheduling deals with the quest for the most profitable mining sequence over the life of a mine. The dynamics of mining ore and waste and the spatial grade uncertainty make predictions of the optimal mining sequence a challenging task. A new optimization approach to production scheduling based on the effective management of waste mining and orebody grade unce...