Ann Bannister, the clinical services manager in A&E, stands in front of a massive whiteboard in the department's nerve centre, its patient flow control room, behind the reception desk where non-urgent arrivals queue.
This paper tackles rescheduling for the unrelated parallel machine problem with sequence dependent setup times and different rates of breakdowns or urgent jobs arrivals.
This knock-on effect results in a clear dependency between semi-urgent patient arrivals and cancellation of elective patients in subsequent weeks.
Since semi-urgent patient arrivals and elective cancellations are dependent, even over consecutive periods, a natural modeling approach lies in the area of queuing theory.
The data needed for the model, semi-urgent patient arrivals, their expected surgery duration and semi-urgent state (i.e. surgery within one or two weeks) were recorded for a consecutive period of ten weeks.
Let the random variables R1 n and R2 n denote the number of 1- and 2-week semi-urgent slot arrivals during week n, where R1 n + R2 n = R n.
Government issues urgent appeal The arrival of these supplies has been welcomed by the 16,000 people who are left homeless in the region of Sofia.
In November , 1991 David received an urgent call about the arrival of a Tibetan official in London as part of an official Chinese government delegation.
Obama has called the arrivals an urgent humanitarian crisis and sought to stem the flow with faster deportation decisions and the promise of additional aid to Guatemala and El Salvador, a message delivered in person by vice-president Joe Biden.
Nathan lies to his partner Elena and leans heavily on his friend Sully, but has to learn to be less selfish and irresponsible – a lesson made all the more urgent and poignant by the arrival of his troubled brother, Sam.
Interruptions occur, e.g., if the part or subparts of it need to be sent to other groups (specialising in other types of repair/maintenance), due to lack of materials, lack of resources (e.g., if a machine is unavailable because another technician is using it), or because of the arrival of more urgent components.
