We investigate the use of 2 tagging technologies: Near Field Communication (NFC) and 2-dimensional barcodes. Our investigation combined a field trial and interview based study with an experimental evaluation. The field trial focused on users' experience of the usability of NFC for a range of trial services, users' perceptions of NFC use in their daily life… (More)
This paper produces new estimates of the rate of organizational forgetting in the well-known case study of US wartime ship production. Estimates obtained using data constructed from primary sources at the National Archives yield rates of forgetting that are much smaller than previously reported, and may well be zero. The richness of the data make it… (More)
In this thesis, we investigate reliable modelling within a stochastic process algebra framework. Primarily, we consider issues of variance in stochastic process algebras as a measure of model reliability. This is in contrast to previous research in the eld which has tended to centre around mean behaviour and steady-state solutions. We present a method of… (More)
The paper describes a simple yet highly accurate multi-layer feed-forward neural network classifier (based on the back-propagation algorithm) specifically designed to successfully distinguish between normal and abnormal higher-order statistics features of electrocardiogram (ECG) signals. The concerned abnormality in ECG is associated with ventricular late… (More)
In GAs applied to engineering problems (in our case, the optimisation of logic circuits) the fitness function is usually complex and the fitness evaluation is time consuming. The run time is therefore a major consideration when designing a GA for optimisation, thus a look-up table for fitness evaluation is desirable. As a consequence, it is appropriate to… (More)
A multivariable sampled-data feedback system contains an analog plant controlled by a sampled-data compensator. Conic sectors that can be used to analyze sampled-data feedback systems are presented and then proved to be valid. Also included is the gain of the sampled-data operator.
The generalized eigenvalue problem can be used to compute angles of multivariable root loci. This is most useful for computing angles of arrival. The results extend to multivariable optimal root loci.
People who believe that their society has few impediments to upward mobility tend to oppose governmental redistribution. This is true even among the poor. Is this because people with this belief expect to be well off in the future, and hence oppose redistribution on self-interested grounds? Or is it because they believe that the less well off have not made… (More)