In this study, an on-line tuning method is proposed for fuzzy PID controllers via rule weighing. The rule weighing mechanism is a fuzzy rule base with two inputs namely; ‘‘error’’ and ‘‘normalized acceleration’’. Here, the normalized acceleration provides relative information on the fastness or slowness of the system response. In deriving the fuzzy rules of the weighing mechanism, the transient...

Bradykinesia (slowness of movement) and other characteristic motor manifestations of Parkinson's disease (PD) are alleviated by treatment with L-dihydroxyphenylalanine (L-DOPA). Long-term L-DOPA treatment, however, is associated with complications such as motor fluctuations and dyskinesia that severely impair the quality of life. It is unclear whether the effect of L-DOPA on spontaneous motor a...

In present article we consider the problems of concentrated point force which is moving with constant velocity and oscillating with cyclic frequency in unbounded homogeneous anisotropic elastic two-dimensional medium. The properties of plane waves and their phase, slowness and ray or group velocity curves for 2D problem in moving coordinate system are described. By using the Fourier integral tr...

This paper outlines the development of an arts-based participatory research (ABPR) methodology in context marine spatial planning (MSP) Algoa Bay, South Africa. Exploring approaches where Indigenous and local knowledge holders are engaged co-researchers, this investigates how contextualised photovoice digital storytelling can offer a creative platform for alternative systems to be conveyed even...

BACKGROUND The objective of this study is to investigate the perceptions of first and third year medical students on self-study and reporting processes of Problem-based Learning (PBL) sessions and their usage of learning resources. METHODS The questionnaire applied to the students consisted of; questions about students' perceptions on searching and preparing phases of the self-study process, ...