Research Repository

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The development of a clinical interface for a novel newborn resuscitation device: a Human Factors approach to understand cognitive user requirements (2019)
Journal Article
Hayes-Gill, B., & Pickup, L. (in press). The development of a clinical interface for a novel newborn resuscitation device: a Human Factors approach to understand cognitive user requirements. JMIR Human Factors,

Background A novel medical device has been developed to address an unmet need in standardising and facilitating heart rate recording during neonatal resuscitation. In a time critical emergency resuscitation, where failure can mean death of an infant... Read More

Optical Fibre-Based Pulse Oximetry Sensor with Contact Force Detection (2018)
Journal Article
Liu, C., Correia, R., Ballaji, H., Korposh, S., Hayes-Gill, B., & Morgan, S. (2018). Optical Fibre-Based Pulse Oximetry Sensor with Contact Force Detection. Sensors, 18(11), doi:10.3390/s18113632

A novel optical sensor probe combining monitoring of blood oxygen saturation (SpO2) with contact pressure is presented. This is beneficial as contact pressure is known to affect SpO2 measurement. The sensor consists of three plastic optical fibres (P... Read More

Circadian changes and sex-related differences in fetal heart rate parameters (2016)
Journal Article
Kapaya, H., Broughton Pipkin, F., Hayes-Gill, B., & Loughna, P. V. (2016). Circadian changes and sex-related differences in fetal heart rate parameters. Maternal Health, Neonatology and Perinatology, 2(1), doi:10.1186/s40748-016-0037-6. ISSN 2054-958X

BACKGROUND: Previous researchers have studied circadian changes in the fetal heart rate (FHR) on small sample sizes and in a strictly controlled environment. This study was undertaken to investigate these changes during the late second and third trim... Read More

Motion limitations of non-contact photoplethysmography due to the optical and topological properties of skin, Phys Meas (2016)
Journal Article
Butler, M., Crowe, J., Hayes-Gill, B., & Rodmell, P. (2016). Motion limitations of non-contact photoplethysmography due to the optical and topological properties of skin, Phys Meas. Physiological Measurement, 37(5), doi:10.1088/0967-3334/37/5/N27

Non-contact photoplethysmography (PPG) provides multiple benefits over in-contact methods, but is not as tolerant to motion due to the lack of mechanical coupling between the subject and sensor. One limitation of non-contact photoplethysmography is... Read More

A single-chip CMOS pulse oximeter with on-chip lock-in detection (2015)
Journal Article
He, D., Morgan, S. P., Trachanis, D., van Hese, J., Drogoudis, D., Fummi, F., …Hayes-Gill, B. R. (2015). A single-chip CMOS pulse oximeter with on-chip lock-in detection. Sensors, 15(7), 17076-17088. doi:10.3390/s150717076

Pulse oximetry is a noninvasive and continuous method for monitoring the blood oxygen saturation level. This paper presents the design and testing of a single-chip pulse oximeter fabricated in a 0.35 µm CMOS process. The chip includes photodiode, tra... Read More

Marked variation in newborn resuscitation practice: a national survey in the UK (2012)
Journal Article
Mann, C., Ward, C., Grubb, M., Hayes-Gill, B., Crowe, J., Marlow, N., & Sharkey, D. (2012). Marked variation in newborn resuscitation practice: a national survey in the UK. Resuscitation, 83(5), doi:10.1016/j.resuscitation.2012.01.002. ISSN 0300-9572

Abstract Background Although international newborn resuscitation guidance has been in force for some time, there are no UK data on current newborn resuscitation practices. Objective Establish delivery room (DR) resuscitation practices in the UK... Read More

Consideration of multiplexing in neural network hardware (1994)
Journal Article
Craven, M., Curtis, K., & Hayes-Gill, B. (1994). Consideration of multiplexing in neural network hardware. IEE Proceedings Circuits Devices and Systems, 141(3), 237-240. doi:10.1049/ip-cds:19941103

This paper presents the results of research into a scheme for overcoming the communications 'bottleneck' within hardware neural networks, utilising frequency division multiplexing of amplitude modulated neural signals. The introduction explains the p... Read More

Two quadrant analogue squarer circuit based on MOS square-law characteristic (1991)
Journal Article
Craven, M., & Hayes-Gill, B. (1991). Two quadrant analogue squarer circuit based on MOS square-law characteristic. Electronics Letters, 27(25), 2307–2308. doi:10.1049/el:19911429

A novel analogue CMOS circuit is presented which performs the arithmetical squaring of a voltage, using the square-law characteristic of the MOS transistor in saturation. The core circuit is constructed from four identical building blocks, which are... Read More

Frequency division multiplexing in analogue neural network (1991)
Journal Article
Hayes-Gill, B., & Craven, M. (1991). Frequency division multiplexing in analogue neural network. Electronics Letters, 27(11), 918-920. doi:10.1049/el:19910575

Frequency division multiplexing has been studied as a means of communication between neural layers in an analogue multilayered perceptron neural network architecture, trained using the back-propagation learning algorithm. Simulation results on networ... Read More

A hybrid neural network/rule-based technique for on-line gesture and hand-written character recognition
Conference Proceeding
Craven, M. P., Curtis, K. M., Hayes-Gill, B. H., & Thursfield, C. A hybrid neural network/rule-based technique for on-line gesture and hand-written character recognition

A technique is presented which combines rule-based and neural network pattern recognition methods in an integrated system in order to perform learning and recognition of hand-written characters and gestures in realtime. The GesRec system is introd... Read More