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Displaying Results 1 - 10 of 10 on page 1 of 1
Marked
Mark
A stability result for a network of two triple junctions on the plane
(2019)
Boutarfa, Bariza; Dassios, Ioannis K.
A stability result for a network of two triple junctions on the plane
(2019)
Boutarfa, Bariza; Dassios, Ioannis K.
Abstract:
In this article, we study the problem of a bounded network of two triple junctions in a planar domain with fixed angle conditions at the junctions and at the points at which the curves intersect with the boundary. We introduce the evolution problem of this type of networks, identify the steady states, and study their stability in terms of the geometry of the boundary.
Science Foundation Ireland
http://hdl.handle.net/10197/10651
Marked
Mark
Gaelic service kindreds and the landscape identity of Lucht Tighe
(2018)
FitzPatrick, Elizabeth
Gaelic service kindreds and the landscape identity of Lucht Tighe
(2018)
FitzPatrick, Elizabeth
Abstract:
This paper discusses the character of the lands of householders who served the courts of Gaelic lords in later medieval Ireland and how their association with those lands, which were mostly of early medieval royal origin, was integral to their identities as hereditary service providers. It demonstrates that this approach has the capacity to reveal a more total picture of later medieval settlement in Gaelic polities than
Peer reviewed
2019-03-06
http://hdl.handle.net/10379/7338
Marked
Mark
Heidegger, or the neglect of boundaries
(2016)
Strohmayer, Ulf
Heidegger, or the neglect of boundaries
(2016)
Strohmayer, Ulf
Abstract:
Benedikt Korf’s recent invitation to re-think the deployment of Heidegger’s philosophy within geography in the pages of this journal (Korf, 2014) is both opportune and essential: opportune, because the many and continuing controversies surrounding Heidegger’s political stance have been reignited following the on-going publication of his Schwarze Hefte (Heidegger, 2014a, b, and c); essential, because any invocation of “Heidegger” today arguably involves something additional to a reflection of the man, his politics, Weltanschauung and philosophy. What is also called for is a discussion of the conditions facilitating meaningful discourse about the nexus between “politics” and “knowledge”. Heidegger’s own construction of that nexus increasingly requires little by way of explanation: his involvement with National Socialism before, during and after his acceptance and subsequent relinquishing of the rectorship of Freiburg University in 1933, his refusal directly to comment on the Holocaust...
http://hdl.handle.net/10379/5655
Marked
Mark
How internet technologies impact information flows in r&d: reconsidering the technological gatekeeper
(2018)
Whelan, Eoin; Teigland, Robin; Donnellan, Brian; Golden, Willie
How internet technologies impact information flows in r&d: reconsidering the technological gatekeeper
(2018)
Whelan, Eoin; Teigland, Robin; Donnellan, Brian; Golden, Willie
Abstract:
Previous studies have firmly established the technological gatekeeper to be a key node in the innovation process - acquiring, translating, and disseminating external information throughout the R&D unit. However, the gatekeeper concept has received modest attention in recent times. We argue that the concept needs to be re-examined in light of the recent advances in Internet technologies that have dramatically altered how knowledge workers source and share their information. Drawing on social network analysis and interview evidence from a medical devices R&D group, we find that the gatekeeper role is still vital, but no longer needs to be performed by a single individual. Instead, the modern R&D group can keep abreast of the latest technological advances through a combination of Internet-enabled internal and external communication specialists. This study makes a number of important contributions. The gatekeeper theory is extended through the development of an u...
http://hdl.handle.net/10379/14413
Marked
Mark
Investigations of the magnetospheric plasma distribution in the vicinity of a pulsar. i. basic formulation
(2018)
McDonald, John; Shearer, Andrew
Investigations of the magnetospheric plasma distribution in the vicinity of a pulsar. i. basic formulation
(2018)
McDonald, John; Shearer, Andrew
Abstract:
The magnetospheric plasma distribution in the vicinity of a pulsar at various inclination angles is investigated using a new relativistic, parallel three-dimensional particle-in-cell (PIC) code DYMPHNA3D. DYMPHNA3D uses a superposition of the electromagnetic fields associated with a rotating magnetized conducting sphere in a vacuum (the pulsar fields) and the electromagnetic fields due to the presence of the magnetospheric plasma surrounding the pulsar (the plasma fields), as the total fields. The plasma is moved self-consistently through the magnetosphere using the PIC methodology. Our initial simulation results are presented here. These showed similar solutions to those obtained from previous numerical simulations, which showed the fundamental plasma distribution in the vicinity of an aligned rotating neutron star to consist of two polar domes and an equatorial torus of trapped nonneutral plasma of the opposite sign. The aligned case being the case in which the inclination angle, ...
http://hdl.handle.net/10379/12757
Marked
Mark
Late-interseismic state of a continental plate-bounding fault: Petrophysical results from DFDP-1 wireline logging and core analysis, Alpine Fault, New Zealand
(2017)
Townend, John; Sutherland, R.; Toy, V. G.; Eccles, J. D.; Boulton, C.; Cox, S. C.; McNa...
Late-interseismic state of a continental plate-bounding fault: Petrophysical results from DFDP-1 wireline logging and core analysis, Alpine Fault, New Zealand
(2017)
Townend, John; Sutherland, R.; Toy, V. G.; Eccles, J. D.; Boulton, C.; Cox, S. C.; McNamara, David D.
Abstract:
We present a geophysical characterization at 0.1-100 m scales of a major plate-bounding continental fault in a late-interseismic state. The Alpine Fault produces M-W approximate to 8 earthquakes every 200-400 years and last ruptured in 1717 AD. Wireline geophysical logs and rock cores extending from one side of the Alpine Fault to the other were acquired in two boreholes drilled in 2011 at Gaunt Creek during the first phase of the Deep Fault Drilling Project (DFDP-1). These data document ambient conditions under which the next Alpine Fault earthquake will occur. Principal component analysis of the wireline logging data reveals that >80% of the variance is accounted for by electrical, acoustic, and natural gamma properties, and preliminary multivariate classification enables the lithologies of sections of missing core to be reconstructed from geophysical measurements. The fault zone exhibits systematic variations in properties consistent with common processes of progressive altera...
http://hdl.handle.net/10379/6722
Marked
Mark
Managerial challenges of publicly funded principal investigators
(2018)
Cunningham, James A.; O', Paul; Reilly, N.A.; O', Conor; Kane, N.A.; Mangemat...
Managerial challenges of publicly funded principal investigators
(2018)
Cunningham, James A.; O', Paul; Reilly, N.A.; O', Conor; Kane, N.A.; Mangematin, Vincent
Abstract:
Principal investigators (PIs) are at the nexus of university business collaborations through their leadership of funded research grants. In fulfilling their multiple roles, PIs are involved in a range of different activities, from direct scientific supervision of junior scientists, the organisation of new scientific avenues to engaging with industrial partners. With the increased impetus for public research to produce wealth through science commercialisation, research is increasingly orchestrated through programmes which seek to connect research avenues and markets. The role of PIs is of growing importance. The extent of managerial challenges encountered by scientists in the context of their PI role has not been the focus of any empirical studies. This paper examines the managerial challenges experienced by publicly funded PIs. Our study, set in the context of the Irish research system, found three foci of PI managerial challenges - project management, project adaptability and proje...
http://hdl.handle.net/10379/10987
Marked
Mark
Stability of a liquid bridge under vibration
(2016)
Benilov, Eugene
Stability of a liquid bridge under vibration
(2016)
Benilov, Eugene
Abstract:
We examine the stability of a vertical liquid bridge between two vertically vibrating, coaxial disks. Assuming that the vibration amplitude and period are much smaller than the mean distance between the disks and the global timescale, respectively, we employ the method of multiple scales to derive a set of asymptotic equations. The set is then used to examine the stability of a bridge of an almost cylindrical shape. It is shown that, if acting alone, gravity is a destabilizing influence, whereas vibration can weaken it or even eliminate altogether. Thus, counter-intuitively, vibration can stabilize an otherwise unstable capillary structure.
PUBLISHED
peer-reviewed
http://hdl.handle.net/10344/6101
Marked
Mark
Stability of bounded dynamical networks with symmetry
(2019)
Dassios, Ioannis K.
Stability of bounded dynamical networks with symmetry
(2019)
Dassios, Ioannis K.
Abstract:
Motivated by dynamical models describing phase separation and the motion of interfaces separating phases, we study the stability of dynamical networks in planar domains formed by triple junctions. We take into account symmetry, angle-intersection conditions at the junctions and at the points at which the curves intersect with the boundary. Firstly, we focus on the case of a network where two triple junctions have all their branches unattached to the boundary and then on the case of a network of hexagons, with one of them having all its branches unattached to the boundary. For both type of networks, we introduce the evolution problem, identify the steady states and study their stability in terms of the geometry of the boundary.
Science Foundation Ireland
http://hdl.handle.net/10197/10552
Marked
Mark
Strain relaxation studies of the Fe3O4/MgO (100) heteroepitaxial system grown by magnetron sputtering
(2004)
SHVETS, IGOR; ARORA, SUNIL
Strain relaxation studies of the Fe3O4/MgO (100) heteroepitaxial system grown by magnetron sputtering
(2004)
SHVETS, IGOR; ARORA, SUNIL
Abstract:
Detailed strain relaxation studies of epitaxial magnetite, Be3O4, films on MgO(100) substrates grown by magnetron sputtering reveal the accommodation of strain up to 600 nm thickness, a thickness far above the critical thickness (t(C)) predicted by theoretical models. The results are in agreement with the suggestion that the excess strain in Fe3O4/MgO(100) heteroepitaxy is accommodated by the presence of antiphase boundaries. The compressive strain generated by the antiphase boundaries compensates for the tensile strain within the growth islands, allowing the film to remain fully coherent with the substrate. Contrary to earlier findings, magnetization decreases with an increase in the film thickness. This vindicates the view that the structure of the antiphase boundaries depends on the growth conditions.
http://hdl.handle.net/2262/54948
Displaying Results 1 - 10 of 10 on page 1 of 1
Bibtex
CSV
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Institution
NUI Galway (6)
Trinity College Dublin (1)
University College Dublin (2)
University of Limerick (1)
Item Type
Book chapter (1)
Journal article (9)
Peer Review Status
Peer-reviewed (4)
Unknown (6)
Year
2019 (2)
2018 (4)
2017 (1)
2016 (2)
2004 (1)
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