A numerical study on the effects of radiation and variable thermal conductivity on the flow and heat transfer in the boundary layer of a viscoelastic fluid (Walters‟ liquid B‟ model) over a stretching porous sheet in the presence of a magnetic field is studied. The momentum differential equation is solved exactly. Two cases of sheet surface conditions are considered – (i) PST case involving pre...

O problema de ltragem H 1 para sistemas lineares a tempo-cont nuo e sujeito a falhas e investigado. E proposto uma metodologia para projetar ltros para a classe de sistemas descrita acima que garante um n vel prescrito de atenuaa c~ ao, na norma L 2 induzida pela relaa c~ ao sinal de ru do versus ^ erro de estimaa c~ ao. Os resultados principais s~ ao conseguidos via desigualdades matriciais li...

Tracking of a reference signal (assumed bounded with essentially bounded derivative) is considered for multi-input, multi-output linear systems satisfying the following structural assumptions: (i) arbitrary – but known – relative degree, (ii) the “high-frequency gain” matrix is sign definite – but of unknown sign, (iii) exponentially stable zero dynamics. The first control objective is tracking...

The boundary layer flow and heat transfer on a stretched surface moving with prescribed skin friction is studied for permeable surface. The surface temperature is assumed to vary inversely with the vertical direction x for n = -1. The skin friction at the surface scales as (x) at m = 0. The constants m and n are the indices of the power law velocity and temperature exponent respectively. Simila...

BACKGROUND A general practitioner (GP)-targeted intervention aimed at improving the prescribing of appropriate polypharmacy for older people was previously developed using a systematic, theory-based approach based on the UK Medical Research Council's complex intervention framework. The primary intervention component comprised a video demonstration of a GP prescribing appropriate polypharmacy du...

OBJECTIVES Cases of antimicrobial resistance are increasing, partly due to inappropriate prescribing practices by dentists. The purpose of this study was to investigate the prescribing practices and knowledge of dentists with regards to antibiotics. Moreover, this study aimed to determine whether the prescriptions comply with the recommended guidelines and whether clinical audit can alter the p...