Browsing by Author "Science Foundation Ireland"

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Browsing by Author "Science Foundation Ireland"

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  • Lavayen, Vladamir; Mirabal, N.; O'Dwyer, Colm; Santa Ana, M. A.; Benavente, Eglantina; Sotomayor Torres, Clivia M.; Gonzalez, Guillermo (Elsevier, 2007-04)
    This work reports the successful realization of MoS2 nanotubes by a novel intercalation chemistry and hydrothermal treatment. An inorganic-organic precursor of hexadecylamine (HDA) and molybdenum disulphide (MoS2) were ...
  • O'Connor, Eileen B.; Cotter, Paul D.; O'Connor, Paula; O'Sullivan, Orla; Tagg, John R.; Ross, R. Paul; Hill, Colin (BioMed Central, 2007-04-02)
    Background: Two component lantibiotics, such as the plasmid-encoded lacticin 3147 produced by Lactococcus lactis DPC3147 and staphylococcin C55 produced by Staphylococcus aureus C55, represent an emerging subgroup of ...
  • Beck, J. Christopher; Wilson, Nic (Association for the Advancement of Artificial Intelligence (AAAI), 2007-07)
    Most classical scheduling formulations assume a fixed and known duration for each activity. In this paper, we weaken this assumption, requiring instead that each duration can be represented by an independent random variable ...
  • Ward, Jonathan M.; O'Shea, Danny G.; Shortt, Brian J.; Nic Chormaic, Síle (American Institute of Physics, 2007-07-20)
    We experimentally demonstrate optical bistability in Er3+-Yb3+ phosphate glass microspheres at 295 K. Bistability is associated with both Er3+ fluorescence and lasing behavior, and chromatic switching. The chromatic switching ...
  • Ye, Zhipeng; Kennedy, Michael Peter (IEEE, 2007-08)
    A reduced complexity digital multi-stage noise shaping (MASH) delta-sigma modulator for fractional-N frequency synthesizer applications is proposed. A long word is used for the first modulator in a MASH structure; the ...
  • O'Shea, Danny G.; Ward, Jonathan M.; Shortt, Brian J.; Mortier, Michel; Féron, Patrice; Nic Chormaic, Síle (EDP Sciences, 2007-11)
    We present results on the realization of a multicolour microspherical glass light source fabricated from the erbium doped fluoride glass ZBLALiP. Whispering gallery mode lasing and upconversion processes give rise to laser ...
  • Hosseini, Kaveh; Kennedy, Michael Peter (IEEE, 2007-12)
    A MASH digital delta-sigma modulator (DDSM) is analyzed mathematically. It incorporates first-order error feedback modulators (EFM) which include prime modulus quantizers to guarantee a minimum sequence length M. The purpose ...
  • Hosseini, Kaveh; Kennedy, Michael Peter (IEEE, 2007-12)
    This paper presents a modified structure for the first-order digital delta-sigma modulator (DDSM) which yields the maximum sequence length (N) for all constant digital inputs and for all initial conditions. Using this ...
  • 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 ...
  • Hautefeuille, Mathieu; O'Mahony, Conor; O'Flynn, Brendan; Peters, Frank H. (IEEE, 2008)
    Complex systems, from environmental behaviour to electronics reliability, can now be monitored with Wireless Sensor Networks (WSN), where multiple environmental sensors are deployed in remote locations. This ensures ...
  • Harte, Seán; O'Flynn, Brendan; Martínez-Català, Rafael V.; Popovici, Emanuel M. (IEEE, 2008)
    Two complementary wireless sensor nodes for building two-tiered heterogeneous networks are presented. A larger node with a 25 mm by 25 mm size acts as the backbone of the network, and can handle complex data processing. A ...
  • Yurchenko, Vladimir; Murphy, John Anthony; Barton, John; Verheggen, Jaap; Rodgers, Kenneth (Horizon House, 2008)
    Dual-layer frequency-selective subwavelength grid polarizers on thin-film dielectric substrates are proposed for THz and sub-THz applications. The dual-layer grids possess enhanced (squared) polarizing efficiency at a ...
  • 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 ...
  • Agarwal, Rachit; Martínez-Català, Rafael V.; Harte, Seán; Segard, Cedric; O'Flynn, Brendan (IEEE, 2008)
    With the migration of a Wireless Sensor Network (WSN) over various evolving applications, power estimation and profiling during the design cycle become critical issues and present hurdles in reducing the design time. ...
  • Gherman, Titus; Venables, Dean S.; Vaughan, Stewart; Orphal, Johannes; Ruth, Albert A. (American Chemical Society, 2008-02)
    The first application of incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) in the near-ultraviolet for the simultaneous detection of two key atmospheric trace species, HONO and NO2, is reported. For ...
  • Goldsmith, Judy; Lang, Jerome; Truszczynski, Miroslaw; Wilson, Nic (Association for the Advancement of Artificial Intelligence (AAAI), 2008-03)
    We investigate the computational complexity of testing dominance and consistency in CP-nets. Previously, the complexity of dominance has been determined for restricted classes in which the dependency graph of the CP-net ...
  • Ward, Jonathan M.; Féron, Patrice; Nic Chormaic, Síle (IEEE, 2008-03)
    We report on the realization of an integrated lasing device consisting of a microsphere optical resonator fused to a tapered optical fiber. A microsphere fabricated from Er: Yb-codoped phosphate glass is heated above its ...
  • Klostermann, Katja; Crispie, Fiona; Flynn, James; Ross, R. Paul; Hill, Colin; Meaney, William (Cambridge University Press, 2008-04)
    A treatment containing a live food-grade organism, Lactococcus lactis DPC3147, was compared with conventional antibiotic therapy for its potential to treat bovine chronic subclinical or clinical mastitis in two separate ...
  • Hosseini, Kaveh; Kennedy, Michael Peter (IEEE, 2008-04)
    In this paper, we extend the idea developed in some of our earlier works of using output feedback to make the quantization step in a digital delta-sigma modulator (DDSM) appear prime. This maximizes the cycle lengths for ...
  • Lynch, C. O.; Hennessy, A. A.; Stanton, Catherine; Wathes, D. C.; Sreenan, J. M.; Diskin, M. G.; Kenny, D. A.; Childs, Stuart (Cambridge University Press, 2008-05)
    The objective of this experiment was to examine the effects of dietary n-3 or n-6 fatty acid (FA) supplementation on blood FA, metabolite and hormone concentrations, follicle size and dynamics and corpus luteum (CL) size. ...