Browsing by Author "Ó Mathúna, S. Cian"

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Browsing by Author "Ó Mathúna, S. Cian"

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  • Chen, W. M.; McCloskey, P.; Byrne, P.; Cheasty, P.; Duffy, G.; Rohan, James F.; Boardman, J.; Mulcahy, A.; Ó Mathúna, S. Cian (Springer-Verlag, 2004-08)
    The interfacial reaction between electroless Ni(P) under-bump metallization (UBM) and solders is studied. A P-rich layer forms in the UBM along the solder side after reflow and thermal aging. Crack formation inside the ...
  • Jafer, Essa; O'Flynn, Brendan; Ó Mathúna, S. Cian; Buckley, John (IEEE, 2008)
    In this paper, a prototype of miniaturized, low power, bi-directional wireless sensor node for wireless sensor networks (WSN) was designed for doors and windows building monitoring. The capacitive pressure sensors have ...
  • Curran, Padraig; Buckley, John; O'Flynn, Brendan; Li, Xuchun; Zhou, Jiang; Lacey, Gerard; Ó Mathúna, S. Cian (Springer, 2008)
    Adequate hand-washing has been shown to be a critical activity in preventing the transmission of infections such as MRSA in health-care environments. Hand-washing guidelines published by various health-care related ...
  • Harte, Seán; Popovici, Emanuel M.; O'Flynn, Brendan; Ó Mathúna, S. Cian (World Scientific and Engineering Academy and Society, 2008-09)
    This research focuses on the design and implementation of a tool to speed-up the development and deployment of heterogeneous wireless sensor networks. The THAWS (Tyndall Heterogeneous Automated Wireless Sensors) tool can ...
  • Wang, Ningning; O'Donnell, Terence; Meere, Ronan; Rhen, Fernando M. F.; Ó Mathúna, S. Cian; Roy, Saibal (Institute of Electrical and Electronics Engineers, 2008-11)
    This paper presents a microinductor fabricated on silicon using electrochemical techniques that has high efficiency in a low power dc–dc converter. Small signal measurements show a flat frequency response up to 20 MHz with ...
  • Walsh, Michael; O'Flynn, Brendan; Barton, John; Ó Mathúna, S. Cian (IEEE, 2009)
    A methodology for improved power controller switching in mobile Body Area Networks operating within the ambient healthcare environment is proposed. The work extends Anti-windup and Bumpless transfer results to provide a ...
  • Wang, Wensi S.; O'Donnell, Terence; Ribetto, Luca; O'Flynn, Brendan; Hayes, Michael; Ó Mathúna, S. Cian (IEEE, 2009-05)
    For many wireless sensor networks applications, indoor light energy is the only ambient energy source commonly available. Many advantages and constraints co-exist in this technology. However, relatively few indoor light ...
  • Jafer, Essa; O'Flynn, Brendan; Ó Mathúna, S. Cian; Špinar, Rostislav (IEEE Computer Society; Conference Publishing Society, 2009-06)
    In this paper, The radio Frequency (RF) Monitoring and Measurement of the Environmental Research Institute (ERI) located in Cork city will be monitored and analyzed in both the Zigbee (2.44 GHz) and the industrial, scientific ...
  • Buckley, John; O'Flynn, Brendan; Barton, John; Ó Mathúna, S. Cian (Emerald Group Publishing Limited, 2009-07)
    Purpose - The purpose of this paper is to develop a highly miniaturized wireless inertial sensor system based on a novel 3D packaging technique using a flexible printed circuit (FPC). The device is very suitable for wearable ...
  • Regan, Fiona; Lawlor, Antoin; O'Flynn, Brendan; Torres-Sanchez, Javier; Martínez-Català, Rafael V.; Ó Mathúna, S. Cian; Wallace, John (IEEE, 2009-10-20)
    At a time when technological advances are providing new sensor capabilities, novel network capabilities, long-range communications technologies and data interpreting and delivery formats via the World Wide Web, we never ...
  • Doherty, Aiden R.; Kelly, Philip; O'Flynn, Brendan; Curran, Padraig; Smeaton, Alan F.; Ó Mathúna, S. Cian; O'Connor, Noel E. (ACM, 2010)
    Colour is everywhere in our daily lives and impacts things like our mood, yet we rarely take notice of it. One method of capturing and analysing the predominant colours that we encounter is through visual lifelogging devices ...
  • Zheng, Liqiang; Mathewson, Alan; O'Flynn, Brendan; Hayes, Michael; Ó Mathúna, S. Cian (Editura Universitatii de Nord, 2010)
    Wireless sensor network (WSN) node, typically equipped with a radio transceiver, a small microcontroller and a battery, is different from traditional embedded systems because of its requirement of random deployment, small ...
  • Jafer, Essa; O'Flynn, Brendan; Ó Mathúna, S. Cian; Wang, Wensi S. (IEEE, 2010)
    In this paper, a wireless sensor network mote hardware design and implementation are introduced for building deployment application. The core of the mote design is based on the 8 bit AVR microcontroller, Atmega1281 and 2.4 ...
  • Wang, Wensi S.; O'Donnell, Terence; Wang, Ningning; Hayes, Michael; O'Flynn, Brendan; Ó Mathúna, S. Cian (ACM, 2010-06)
    For most wireless sensor networks, one common and major bottleneck is the limited battery lifetime. The frequent maintenance efforts associated with battery replacement significantly increase the system operational and ...
  • Hilt, Thierry; Boutry, Herve; Franiatte, Remi; Rothan, Frederic; Sillon, Nicolas; Stam, Frank; Mathewson, Alan; Wang, Ningning; Ó Mathúna, S. Cian; Rodgers, Kenneth (IEEE, 2010-06-04)
    This paper reports on the design and the manufacturing of an integrated DCDC converter, which respects the specificity of sensor node network: compactness, high efficiency in acquisition and transmission modes, and ...
  • Walsh, Michael; O'Grady, Michael J.; Dragone, Mauro; Tynan, Richard; Ruzzelli, Antonio; Barton, John; O'Flynn, Brendan; O'Hare, Gregory M.P.; Ó Mathúna, S. Cian (IEEE, 2010-07)
    Emerging healthcare applications can benefit enormously from recent advances in pervasive technology and computing. This paper introduces the CLARITY Modular Ambient Health and Wellness Measurement Platform:, which is a ...
  • Zheng, Liqiang; Mathewson, Alan; O'Flynn, Brendan; Hayes, Michael; Ó Mathúna, S. Cian (2010-08)
    A comparison study was carried out between a wireless sensor node with a bare die flip-chip mounted and its reference board with a BGA packaged transceiver chip. The main focus is the return loss (S parameter S11) at the ...
  • Zheng, Liqiang; Mathewson, Alan; O'Flynn, Brendan; Hayes, Michael; Ó Mathúna, S. Cian (© (2011) Trans Tech Publications, Switzerland, 2010-08)
    In this paper, the effect of the substrate on wireless sensor network (WSN) node s RF performance is studied experimentally by using different substrate materials with different thickness. A six-layer FR4 substrate PCB WSN ...
  • O'Flynn, Brendan; Jafer, Essa; Špinar, Rostislav; Keane, Marcus M.; Ó Mathúna, S. Cian (2010-09)
    Buildings consume 40% of Ireland's total annual energy translating to 3.5 billion (2004). The EPBD directive (effective January 2003) places an onus on all member states to rate the energy performance of all buildings in ...
  • Zheng, Liqiang; Rodgers, Kenneth; Mathewson, Alan; O'Flynn, Brendan; Hayes, Michael; Ó Mathúna, S. Cian (IEEE, 2010-09-16)
    The flip-chip technology is a high chip density solution to meet the demand for very large scale integration design. For wireless sensor node or some similar RF applications, due to the growing requirements for the wearable ...