Administrative Staff Authors (Scholarly Publications): Recent submissions
Now showing items 661-680 of 828
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Understanding informal payments in healthcare: motivation of health workers in Tanzania
(2009)Background There is growing evidence that informal payments for health care are fairly common in many low- and middle-income countries. Informal payments are reported to have a negative consequence on equity and quality ... -
Converging in Catholicity
(Universal Academy Press, 2009)The ecumenical problem and the starting point of ecumenical endeavour is that the inherent unity of the church of God has been distorted and obscured by the ecclesiastical divisions that have developed due to cultural ... -
Breaking the Mould: New Trajectories in the Domiciliary Care of Older People in Ireland
(Wiley-Blackwell, 2008)This article reviews the development of domiciliary care services for older people in Ireland over the last decade. It reveals three central developments, namely (i) the first steps, in the Irish context, towards a ... -
Worlds apart? Public, private and non-profit sector providers of domiciliary care for older persons in Ireland
(Elsevier, 2007)Domiciliary care of older persons is changing rapidly in Ireland. The most significant recent changes are the emergence of private home care companies, the introduction of a new policy instrument (cash-for-care) and the ... -
'How Can You Just Cut Off a Whole Side of the Family and Say Move On?' The Reshaping of Paternal Grandparent-Grandchild Relationships Following Relationship Breakdown in the Middle Generation
(2010)Based on a qualitative study of 31 grandparents, this article highlights how separation in the middle generation can result in an erosion of trust and quality of paternal grandparent-grandchild relationships. Despite these ... -
Langevin equation approach to diffusion magnetic resonance imaging
(2009)The normal phase diffusion problem in magnetic resonance imaging (MRI) is treated by means of the Langevin equation for the phase variable using only the properties of the characteristic function of Gaussian random variables. ... -
Room-temperature exciton luminescence in II-VI quantum wells
(1991)We observe free excitons in absorption and emission at room temperature in Cd0,2sZne.7sTe/ ZnTe multiple quantum wells. A large overlap between luminescence and absorption peaks observed at 10 K is maintained up to room ... -
Hot-exciton relaxation in CdxZn1-xTe/ZnTe multiple quantum wells
(1991)We have observed the creation of hot excitons at high momentum in CdxZn1-xTe multiple quantum wells and subsequent relaxation by LO-phonon emission to give sharp luminescence lines superimposed on a broader background. The ... -
All-optical clock distribution with synchronous frequency division and multiplication
(1992)A master optical clock from a mode locked laser is distributed to two slave twin section lasers. One slave laser divides the optical modulation frequency by 2, the other slave laser multiplies the frequency by 2. It is ... -
All-optical synchronization and frequency division of mode-locked pulses
(1992)We report all-optical synchronization and frequency division of mode-locked input signals, using a selfpulsating laser diode. The performance of mode-locked and sinusoidal input signals are compared. Synchronization ... -
The influence of the unlocked characteristics of a self-pulsating laser diode on synchronization
(1993)All-optical synchronization and timing extraction based on self-pulsating twin section lasers has been demonstrated. We investigate the variation of the unlocked full-widthat- half-maximum of the fundamental of the RF ... -
All optical timing extraction with frequency division using a twin section laser diode.
(1993)All-optical timing extraction from a coded line signal with division of the extracted clock frequency is demonstrated using a single twin-section self-pulsating laser diode. Either the bit-rate clock or a submultiple ... -
Carrier lifetimes in strained InGaAs/(Al)GaAs multiple quantum wells
(1993)The etfect of strain, strain relief, and barrier design on the carrier lifetime in InGaAs/(Al)GaAs multiple-quantum-well samples is investigated. Carriers lifetimes are measured in samples with varying amount of strain, ... -
Strain effect on the optical nonlinearity in an InGaAs/GaAs asymmetric Fabry-Perot modulator.
(American Physical Society, 1993)The effect of strain on the optical nonlinearities and operation of an all-optical asymmetric Fabry-Perot italon is investigated. A high reflectivity modulation of 60% is reported with a contrast ratio of 12.2:1 and ... -
Uncovering the Neural Signature of Lapsing Attention: Electrophysiological Signals Predict Errors up to 20 s before They Occur
(2009)The extent to which changes in brain activity can foreshadow human error is uncertain yet has important theoretical and practical implications. The present study examined the temporal dynamics of electrocortical signals ... -
Growth and characterization of an epitaxially grown ZnSSe/MnZnSSe distributed Bragg reflector
(1995)A Bragg reflector consisting of a 25-period MnZnSSe/ZnSSE Bragg stack is reported. The II?VI semiconductor structure was grown by molecular beam epitaxy on a GaAs ~100! epilayer. Structural characterization of the Bragg ... -
Molecular beam epitaxy growth of MgZnSSe/ZnSSe Bragg mirrors controlled by in situ optical reflectometry.
(1995)In situ optical reflectometry at the wavelength of 488 nm was employed to control the growth of MgZnSSe/ZnSSe Bragg mirror stacks for the blue-green spectral region. 10- and 20-period layer structures of MgZnSSe/ZnSSe ... -
Electro-optic modulation using asymmetric Fabry-Perot laser diode amplifiers.
(1994)We report the use of laser diode amplifiers, whose facets have unequal mirror reflectivities, as asymmetric Fabry-Perot modulators. Due to the presence of optical gain in these devices we observe modulation of reflected ... -
All-optical synchronization of self-pulsating laser diodes
(1996)We examine the behavior of self-pulsating laser diodes when injected with periodic optical signals. We experimentally and theoretically investigate the phase difference between the injected optical signal and the ... -
Very low saturation densities in strained InGaAs/AlGaAs multiple quantum wells
(1994)The saturation of excitonic absorption in strained InGaAs/AlGaAs quantum wells is systematically measured as a function of strain. By comparison with an unstrained GaAs/AlGaAs quantum well sample a reduction by a factor ...
