Richard J. Barton

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Data gathering is one of the most important services provided by wireless sensor networks (WSNs). Since the predominant traffic pattern in data gathering services is many-to-one communication, it is critical to understand the limitations of many-to-one information flows and devise efficient data aggregation protocols to support prolonged operations in WSNs.(More)
The theoretical and practical performance limits of a 2D ultra-wideband impulse-radio localization system operating in the far field are studied under the assumption that estimates of location are based on time-difference-of-arrival (TDOA) measurements. Performance is evaluated in the presence of errors in both the TDOA measurements and the sensor(More)
In wireless systems, accurate location estimation facilitates a variety of applications such as emergency localization, intelligent transport systems, inventory tracking, intruder detection , tracking of fire-fighters and miners, and home automation [1, 2]. In addition, location information can help optimize resource allocation and improve cooperation in(More)
Malonyl-CoA, the inhibitor of carnitine acyltransferase I, is an important regulator of fatty acid oxidation and ketogenesis in the liver. Muscle carnitine acyltransferase I has previously been reported to be more sensitive to malonyl-CoA inhibition than is liver carnitine acyltransferase I. Fluctuations in malonyl-CoA concentration may therefore be(More)
Activin A is a member of the transforming growth factor-beta (TGF-beta) family of cytokines and growth factors and upregulation of this protein has been linked with a number of disease processes associated with chronic inflammation and fibrosis. Its potential involvement in burns has not yet been investigated. We therefore studied the localization of(More)
Endoscopic release has been shown to be a safe and effective means of carpal tunnel decompression. The surgeon needs to be aware of the variations in the anatomy of the median nerve in order to minimise the risk of nerve injury. In this series of 748 endoscopic carpal tunnel releases, six were found to have variations in the median nerve anatomy, in two(More)