An integrated approach to performance analysis in terms of throughput and response time to satisfy customer requirements is particularly important for workow systems where human and computerised processes are intertwined. A basic framework for performance engineering is proposed, which bridges the gap between the design of computerised information systems and of organisations in which they are ...

in this paper, solution of nonlinear optimal control problems and the controlled duffing oscillator, as a special class of optimal control problems, are considered and an efficient algorithm is proposed. this algorithm is based on state parametrization as a polynomial with unknown coefficients. by this method, the control and state variables can be approximated as a function of time. also, the ...

OBJECTIVE Computerised therapies play an integral role in efforts to improve access to psychological treatment for patients with depression and anxiety. However, despite recognised problems with uptake, there has been a lack of investigation into the barriers and facilitators of engagement. We aimed to systematically review and synthesise findings from qualitative studies of computerised therap...

FACES ARE FASCINATING. THE COMBINATION OF FIVE BASIC FACIAL FEATURES can create millions of variations. From the time when mankind began to draw on cave walls, artists have endeavoured to produce what the eye perceives in hard-copy. Along with the infinite naturally-occurring facial variations, human error in the form of individual perceptiveness widens the degree of inaccuracy in portraying th...

This report describes a method for conversion of visual fields from Goldmann perimeter charts to computer use, including area calculation, graphic display, and storage in the patient's data base. The computer program enables one to calculate and display several isoptres of each chart, as well as visual fields with scotomas or composed of islands. This method makes it possible to follow in an ac...

BACKGROUND The ideal method to encourage uptake of clinical guidelines in hospitals is not known. Several strategies have been suggested. This study evaluates the impact of academic detailing and a computerised decision support system (CDSS) on clinicians' prescribing behaviour for patients with community acquired pneumonia (CAP). METHODS The management of all patients presenting to the emerg...

OBJECTIVE To assess the effects of a computerised protocol management system on the number, cost, and appropriateness of laboratory investigations requested. DESIGN A before and after intervention. SETTING A supraregional liver unit in a teaching hospital. PATIENTS 1487 consecutive patients admitted during 1990 and 1991 (one year before and one year after introduction of the system). IN...