Institutions
|
About Us
|
Help
|
Gaeilge
0
1000
Home
Browse
Advanced Search
Search History
Marked List
Statistics
A
A
A
Show search options
Hide search options
Search using:
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
From
2104
2027
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
1947
1946
1945
1944
1943
1942
1941
1940
1939
1938
1937
1936
1935
1934
1933
1932
1931
1930
1929
1928
1927
1926
1925
1924
1923
1922
1921
1920
1919
1918
1917
1916
1915
1914
1913
1912
1911
1910
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1890
1889
1888
1887
1886
1885
1884
1883
1882
1881
1880
1879
1878
1877
1876
1875
1874
1873
1872
1871
1870
1869
1868
1867
1866
1865
1864
1863
1862
1861
1860
1859
1858
1857
1856
1855
1854
1853
1852
1851
1850
1849
1846
1842
1840
1839
1835
1827
1825
1821
1820
1818
1817
1815
1812
1811
1810
1809
1808
1807
1806
1805
1804
1803
1802
1801
1800
1792
1790
1770
1713
1111
1000
To
2104
2027
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
1947
1946
1945
1944
1943
1942
1941
1940
1939
1938
1937
1936
1935
1934
1933
1932
1931
1930
1929
1928
1927
1926
1925
1924
1923
1922
1921
1920
1919
1918
1917
1916
1915
1914
1913
1912
1911
1910
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1890
1889
1888
1887
1886
1885
1884
1883
1882
1881
1880
1879
1878
1877
1876
1875
1874
1873
1872
1871
1870
1869
1868
1867
1866
1865
1864
1863
1862
1861
1860
1859
1858
1857
1856
1855
1854
1853
1852
1851
1850
1849
1846
1842
1840
1839
1835
1827
1825
1821
1820
1818
1817
1815
1812
1811
1810
1809
1808
1807
1806
1805
1804
1803
1802
1801
1800
1792
1790
1770
1713
1111
1000
Optionally, filter by:
(Leave unchecked to search all fields)
Item Type
Book
Book chapter
Conference item
Contribution to newspaper/magazine
Doctoral thesis
Journal article
Master thesis (research)
Master thesis (taught)
Multimedia
Patent
Report
Review
Working paper
Other
Peer Review Status
Peer reviewed
Non peer reviewed
Unknown
Institution
All Ireland Public Health Repository
Connacht-Ulster Alliance
Dublin City University
Dublin Institute of Technology
Dundalk Institute of Technology
Lenus
Marine Institute
Mary Immaculate College
Maynooth University
NUI Galway
Royal College of Surgeons in Ireland
Teagasc
Trinity College Dublin
University College Cork
University College Dublin
University of Limerick
Funder
Enterprise Ireland (EI)
Environmental Protection Agency (EPA)
Health Research Board (HRB)
Higher Education Authority (HEA)
Irish Aid
Irish Research Council for Humanities and Social Sciences (IRCHSS)
Irish Research Council for Science Engineering and Technology (IRCSET)
Marine Institute
Science Foundation Ireland (SFI)
Teagasc
Language
Irish
English
Bulgarian
Catalan; Valencian
Chinese
Czech
Danish
Dutch; Flemish
French
German
Greek, Modern (1453-)
Croatian
Interlingue; Occidental
Italian
Japanese
Korean
Lithuanian
Norwegian
Polish
Portuguese
Romanian; Moldavian; Moldovan
Spanish; Castilian
Serbian
Turkish
Vietnamese
Current Search:
'high' in all fields;
11731 items found
Sort by
Relevance
Title
Author
Item type
Date
Institution
Peer review status
Language
Order
Ascending
Descending
25
50
100
per page
1
2
3
4
5
6
7
8
9
10
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Displaying Results 1 - 25 of 11731 on page 1 of 470
Marked
Mark
Performance analysis of high-speed optical packet switching in high performance computing and datacentre networks
(2016)
Jingyan, Wang
Performance analysis of high-speed optical packet switching in high performance computing and datacentre networks
(2016)
Jingyan, Wang
Abstract:
The massive growth in datacentre traffic, due to a huge increase in the deployment of data-intensive applications, is forcing datacentre infrastructure to migrate away from conventional electronic packet-switched networks, where capacity scaling imposes significant financial and technical constraints, and to evolve towards more advanced architectures. Motivated by this, new optical switching technologies and networking architectures, capable of providing very large bandwidth capacity, high scalability, high switching speed and high energy efficiency, are being targeted for building next-generation high-performance datacentre and High Performance Computing (HPC) networks. Optical packet switching technology is considered to be a long-term solution to meet these design challenges, as it can exploit fully the enormous potential capacity enabled by optics and support high switching flexibility at packet level. In this thesis, new wavelength-routed optical packet switching architectures,...
http://doras.dcu.ie/21240/
Marked
Mark
Core/shell (Cu/Cu2O) nanotubes as high performance anode materials for Li-ion rechargeable batteries
(2009)
Hasan, Maksudul; Chowdhury, Tamjid; Rohan, James F.
Core/shell (Cu/Cu2O) nanotubes as high performance anode materials for Li-ion rechargeable batteries
(2009)
Hasan, Maksudul; Chowdhury, Tamjid; Rohan, James F.
Abstract:
A direct electrodeposition technique for very high quality Cu nanotube arrays and subsequent conversion of the deposited Cu into Cu2O has been developed. The Cu2O nanotube arrays have high capacity, high cyclability and high rate capability. The cycling performance of Cu2O nanotubes show a high level of structural integrity with capacity retention even after 94 cycles when cycled at 1.67 mA/cm2. The outstanding electrochemical performance of the Cu2O nanotubes comes from high surface area, easy infiltration of electrolytes, high electrical conductivity of Cu core support and structural integrity of the oxide shell active material. The Cu2O nanotubes also eliminate the requirement of ancillary materials currently used in Li-ion batteries, such as carbon particles to increase conductivity. The easy fabrication and performance of Cu2O nanotube arrays may make them suitable for next generation Li-ion batteries.
http://hdl.handle.net/10468/7604
Marked
Mark
Growth of crystalline copper silicide nanowires in high yield within a high boiling point solvent system
(2012)
Geaney, Hugh; Dickinson, Calum; O'Dwyer, Colm; Mullane, Emma; Singh, Ajay; Ryan, K...
Growth of crystalline copper silicide nanowires in high yield within a high boiling point solvent system
(2012)
Geaney, Hugh; Dickinson, Calum; O'Dwyer, Colm; Mullane, Emma; Singh, Ajay; Ryan, Kevin M.
Abstract:
Here, we report the formation of high density arrays of Cu15Si4 nanowires using a high boiling point organic solvent based method. The reactions were carried out using Cu foil substrates as the Cu source with nanowire growth dependent upon the prior formation of Cu15Si4 crystallites on the surface. The method shows that simple Si delivery to metal foil can be used to grow high densities of silicide nanowires with a tight diameter spread at reaction temperatures of 460 °C. The nanowires were characterized by high-resolution transmission electron microscopy (HRTEM), high-resolution scanning electron microscopy (HRSEM), and X-ray photoelectron spectroscopy (XPS), and electrical analysis showed that they possess low resistivities.
http://hdl.handle.net/10468/6283
Marked
Mark
Electrical characterization of high performance, liquid gated vertically stacked SiNW-based 3D FET biosensors
(2014)
Buitrago, Elizabeth; Badia, Monserrat Fernández-Bolaños; Georgiev, Yordan M.; Yu, Ran; ...
Electrical characterization of high performance, liquid gated vertically stacked SiNW-based 3D FET biosensors
(2014)
Buitrago, Elizabeth; Badia, Monserrat Fernández-Bolaños; Georgiev, Yordan M.; Yu, Ran; Lotty, Olan; Holmes, Justin D.; Nightingale, Adrian M.; Guerin, Höel M.; Ionescu, Adrian M.
Abstract:
A 3D vertically stacked silicon nanowire (SiNW) field effect transistor featuring a high density array of fully depleted channels gated by a backgate and one or two symmetrical platinum side-gates through a liquid has been electrically characterized for their implementation into a robust biosensing system. The structures have also been characterized electrically under vacuum when completely surrounded by a thick oxide layer. When fully suspended, the SiNWs may be surrounded by a conformal high-κ gate dielectric (HfO2) or silicon dioxide. The high density array of nanowires (up to 7 or 8 × 20 SiNWs in the vertical and horizontal direction, respectively) provides for high drive currents (1.3 mA/μm, normalized to an average NW diameter of 30 nm at VSG = 3 V, and Vd = 50 mV, for a standard structure with 7 × 10 NWs stacked) and high chances of biomolecule interaction and detection. The use of silicon on insulator substrates with a low doped device layer significantly reduces leakage cur...
http://hdl.handle.net/10468/2277
Marked
Mark
Low volume short duration high-intensity interval training and repeated sprint ability in Gaelic football players
(2014)
Kelly, David
Low volume short duration high-intensity interval training and repeated sprint ability in Gaelic football players
(2014)
Kelly, David
Abstract:
Gaelic Football is the most popular sport in Ireland and is characterized by irregular changes of pace and high-intensity efforts interspersed with periods of light to moderate intensity activity. Speed, power and aerobic capacity are essential fitness components for optimal performance during match play. A high level of aerobic conditioning is required to generate and maintain power output during repeated high intensity activities. Study 1: Anthropometric, physiological, metabolic and endurance exercise performance were evaluated in club level Gaelic football players (n=15) in response to 2 weeks of low volume short duration high-intensity interval training (LS-HIT) or high volume endurance training (HVET). Six sessions of LS-HIT and HVET induced similar improvements in endurance exercise performance. V̇O2max was increased significantly in the LS-HIT group only. There was no change in running economy or vV̇O2max following LS-HIT or HVET. Study 2: This study compared the effect...
http://doras.dcu.ie/20190/
Marked
Mark
Anisotropic Ni–Fe–B films with varying alloy composition for high frequency magnetics on silicon applications
(2015)
Anthony, Ricky; Shanahan, Brian J.; Waldron, Finbarr; Ó Mathúna, S. Cian; Rohan, James F.
Anisotropic Ni–Fe–B films with varying alloy composition for high frequency magnetics on silicon applications
(2015)
Anthony, Ricky; Shanahan, Brian J.; Waldron, Finbarr; Ó Mathúna, S. Cian; Rohan, James F.
Abstract:
An electroless nickel-iron alloy deposition process utilizing an external magnetic field was studied to achieve varying nickel and iron compositions for the specific high frequency application range. High anisotropy, low coercivity and high saturation flux density values were achieved which show significant improvements appropriate for high frequency magnetics on silicon applications. It has been shown that higher Fe content films can be achieved by increasing the DMAB concentration. The magnetic, electrical and structural characteristics of these application specific films with different Fe content were reported. The increased resistivity of the films reduces the eddy current losses whereas the permeability studies suggests high frequency applicability of the thin films as core material in magnetics on Si applications. The micro-structural analyses suggested that the deposits are nano-crystalline in nature with grain sizes below 33 nm resulting in low coercivity values in the films...
http://hdl.handle.net/10468/3712
Marked
Mark
The use of inline high-shear rotor-stator mixing for preparation of high-solids milk-protein-stabilised oil-in-water emulsions with different protein:fat ratios
(2017)
O'Sullivan, Jonathan J.; Drapala, Kamil P.; Kelly, Alan L.; O'Mahony, James A.
The use of inline high-shear rotor-stator mixing for preparation of high-solids milk-protein-stabilised oil-in-water emulsions with different protein:fat ratios
(2017)
O'Sullivan, Jonathan J.; Drapala, Kamil P.; Kelly, Alan L.; O'Mahony, James A.
Abstract:
The emulsification of refined palm oil (RPO) in a continuous phase consisting of skim milk concentrate (SMC) and maltodextrin with a dextrose equivalent value of 17 (MD17) to produce fat-filled milk emulsions (FFMEs), was studied. A novel inline high-shear mixing (IHSM) method was used to produce emulsions, and three protein contents were investigated at a fixed RPO content of 12%: low (7.7%), medium (10.5%) and high (13%). Pressure drop measurement was used as an inline approach to determine viscosity using the Hagen-Poiseuille equation. In addition, offline viscometry, particle size and emulsion stability analyses were performed. Emulsion fat droplet size decreased significantly (P < 0.05) as a function of number of passes through the IHSM, due to an effective increase in residence time. Furthermore, inline pressure drop data demonstrated that the emulsification process displayed two distinct stages: (i) oil injection, and (ii) reduction in fat droplet size, irrespective of pro...
http://hdl.handle.net/10468/4999
Marked
Mark
High-aspect-ratio photoresist processing for fabrication of high resolution and thick micro-windings
(2016)
Anthony, Ricky; Laforge, Elias; Casey, Declan P.; Rohan, James F.; Ó Mathúna, S. Cian
High-aspect-ratio photoresist processing for fabrication of high resolution and thick micro-windings
(2016)
Anthony, Ricky; Laforge, Elias; Casey, Declan P.; Rohan, James F.; Ó Mathúna, S. Cian
Abstract:
DC winding losses remain a major roadblock in realizing high efficiency micro-magnetic components (inductors/transformers). This paper reports an optimized photoresist process using negative tone and acrylic based THB-151N (from JSR Micro), to achieve one of the highest aspect ratio (17:1) and resolution (~5 µm) resist patterns for fabrication of thick (~80 µm) micro-winding using UV lithography. The process was optimized to achieve photoresist widths from 5 µm to 20 µm with resist thickness of ~85 µm in a single spin step. Unlike SU-8, this resist can be readily removed and shows a near-vertical (~91°) electroplated Cu side-wall profile. Moreover, the high resolution compared to available resist processes enables a further reduction in the footprint area and can potentially increase the number of winding thereby increasing the inductance density for micro-magnetic components. Resistance measurements of electroplated copper winding of air-core micro-inductors within the standard 040...
http://hdl.handle.net/10468/7656
Marked
Mark
Enhanced catalytic activity of high index faceted palladium nanoparticles in Suzuki-Miyaura coupling due to efficient leaching mechanism
(2014)
Collins, Gillian; Schmidt, Michael; O'Dwyer, Colm; McGlacken, Gerard P.; Holmes, J...
Enhanced catalytic activity of high index faceted palladium nanoparticles in Suzuki-Miyaura coupling due to efficient leaching mechanism
(2014)
Collins, Gillian; Schmidt, Michael; O'Dwyer, Colm; McGlacken, Gerard P.; Holmes, Justin D.
Abstract:
The structure-property relationship of palladium (Pd) catalysts in Suzuki-Miyaura cross-coupling reactions was investigated using Pd nanocrystals of uniform size and shape. Superior catalytic reactivity was observed for Pd nanoparticles with high-index {730} surface facets compared to low-index {100} facets. Although the nanocrystal morphologies were maintained during the reaction, the presence of Pd clusters, identified by high-resolution transmission electron microscopy (TEM), indicates a leaching mechanism. The nature of the surface facets on the nanoparticles was observed to influence the rate of Pd leaching during the Suzuki coupling reaction. The enhanced reactivity observed for the high-index facet catalysts stems from the greater number of leachable atoms of low abstraction energy available on high-index planes.
http://hdl.handle.net/10468/2279
Marked
Mark
High injection and carrier pile-up in lattice matched InGaAs/InP PN diodes for thermophotovoltaic applications
(2004)
Ginige, Ravin; Cherkaoui, Karim; Kwan, V. W.; Kelleher, Carmel; Corbett, Brian M.
High injection and carrier pile-up in lattice matched InGaAs/InP PN diodes for thermophotovoltaic applications
(2004)
Ginige, Ravin; Cherkaoui, Karim; Kwan, V. W.; Kelleher, Carmel; Corbett, Brian M.
Abstract:
This article analyzes and explains the observed temperature dependence of the forward dark current of lattice matched In0.53Ga0.47As on InP diodes as a function of voltage. The experimental results show, at high temperatures, the characteristic current-voltage (I-V) curve corresponding to leakage, recombination, and diffusion currents, but at low temperatures an additional region is seen at high fields. We show that the onset of this region commences with high injection into the lower-doped base region. The high injection is shown by using simulation software to substantially alter the minority carrier concentration profile in the base, emitter and consequently the quasi-Fermi levels (QFL) at the base/window and the window/cap heterojunctions. We show that this QFL splitting and the associated electron "pile-up" (accumulation) at the window/emitter heterojunction leads to the observed pseudo-n=2 region of the current-voltage curve. We confirm this phenomenon by investigati...
http://hdl.handle.net/10468/4235
Marked
Mark
Effect of high frequency ultrasounds on lycopene and total phenolic concentration, antioxidant properties and a-glucosidase inhibitory activity of tomato juice
(2017)
Bot, Francesca; Anese, M.; Hungerford, G.; Lemos, M. A.
Effect of high frequency ultrasounds on lycopene and total phenolic concentration, antioxidant properties and a-glucosidase inhibitory activity of tomato juice
(2017)
Bot, Francesca; Anese, M.; Hungerford, G.; Lemos, M. A.
Abstract:
The effect of high frequency ultrasound on lycopene and total phenolic concentration, antioxidant properties and α-glucosidase inhibitory activity of tomato juice was investigated. To this purpose, tomato juice was subjected to high frequency ultrasound (378 and 583 kHz) at increasing energy densities (up to 250 MJ/m3). Results relevant to the treatments at high frequency providing an energy density of 250 MJ/m3 were compared with those obtained at 24 kHz delivering the same energy density. Lycopene and total phenolic concentration, as well as the α-glucosidase inhibitory activity of tomato juice, were not affected by ultrasound regardless the frequency and energy density. However, the antioxidant properties were negatively affected by high frequency ultrasound.
http://hdl.handle.net/10468/6892
Marked
Mark
The Financing of High-Tech SMEs: Investigating the Effects of Capital Structure on Performance
(2019)
NEVILLE, CONOR
The Financing of High-Tech SMEs: Investigating the Effects of Capital Structure on Performance
(2019)
NEVILLE, CONOR
Abstract:
The thesis examines the capital structure of small and medium-sized enterprises which are based in the high-technology sector. Little analysis so far has investigated the impact of financing on this important sector and the influence different financing options have on the firms' performance. The importance to job growth and the economy are critical as within the EU, SMEs encompass 99 percent of the total businesses and 67 percent of total employment, while high-technology sectors have been vital to economic strength and demonstrated considerable growth in the past decade (Eurostat 2012; Eurostat 2013). The analysis is discussed in three separate studies, comprising of two different datasets. The first study implements secondary financial data of European high-tech SMEs during a 10-year period from the Orbis database. Two studies use primary data from a questionnaire that was undertaken and contains a sample of 100 high-tech SMEs based in Ireland. The country is very suitable f...
http://hdl.handle.net/2262/86622
Marked
Mark
A new MAC scheme for very high-speed WLANs
(2006)
Li, Tianji; Ni, Qiang; Leith, Douglas J.; Malone, David; Xiao, Yang; Turletti, Thierry
A new MAC scheme for very high-speed WLANs
(2006)
Li, Tianji; Ni, Qiang; Leith, Douglas J.; Malone, David; Xiao, Yang; Turletti, Thierry
Abstract:
We consider the medium access control (MAC) layer for very high-speed Wireless LANs, which is designed to support rich multimedia applications such as high-definition television. In such networks, the physical (PHY) layer data rate is proposed to exceed 216Mbps. The legacy MAC layer, however, greatly restricts the performance improvement due to its overhead. It has been shown that MAC utilizes less than 20% of the transportation ability provided by the PHY layer. To mitigate this inefficiency, we propose an Aggregation with Fragment Retransmission (AFR) scheme, which supports transmissions of very large frames and partial retransmissions in the case of errors. Aggregation allows for increased performance despite per-transmission overhead while partial retransmission alleviates the risk of losing the entire frame. Extensive simulations show that AFR fundamentally outperforms the legacy MAC protocol. It is particularly effctive for applications with high data rates and large packet si...
http://mural.maynoothuniversity.ie/1499/
Marked
Mark
Design Of High Frequency Digital Phase Locked Loops
(2006)
Daniels, Brian; Farrell, Ronan
Design Of High Frequency Digital Phase Locked Loops
(2006)
Daniels, Brian; Farrell, Ronan
Abstract:
This paper considers the stability of high order Charge Pump Phase Lock Loop (CP-PLL), proposing a novel means of identifying stable regions for such systems. Traditional design techniques are inefficient for high frequency, high order CPPLL systems. This paper proposes an accurate and efficient means of identifying stable regions for 2nd and 3rd order high frequency (> 1GHz) CP-PLL. Using exact non-linear CP-PLL responses it is shown that the proposed stability technique is a significant improvement over existing linear methods.
http://mural.maynoothuniversity.ie/601/
Marked
Mark
Direct and Indirect Classification of High Frequency LNA Gain Performance - A Comparison Between SVMs and MLPs
(2009)
Hung, Peter C.; McLoone, Sean F.; Farrell, Ronan
Direct and Indirect Classification of High Frequency LNA Gain Performance - A Comparison Between SVMs and MLPs
(2009)
Hung, Peter C.; McLoone, Sean F.; Farrell, Ronan
Abstract:
The task of determining low noise amplifier (LNA) high-frequency performance in functional testing is as challenging as designing the circuit itself due to the difficulties associated with bringing high frequency signals offchip. One possible strategy for circumventing these difficulties is to inferentially estimate the high frequency performance measures from measurements taken at lower, more accessible, frequencies. This paper investigates the effectiveness of this strategy for classifying the high frequency gain of the amplifier, a key LNA performance parameter. An indirect Multilayer Perceptron (MLP) and direct support vector machine (SVM) classification strategy are considered. Extensive Monte-Carlo simulations show promising results with both methods, with the indirect MLP classifiers marginally outperforming SVMs.
http://mural.maynoothuniversity.ie/2721/
Marked
Mark
A 12-mW 264-MHz high linearity sharp roll-off CMOS opamp-RC low-pass filter for MB-OFDM UWB systems
(2009)
Phan, Anh Tuan; Farrell, Ronan; Lee, Sang-Gug
A 12-mW 264-MHz high linearity sharp roll-off CMOS opamp-RC low-pass filter for MB-OFDM UWB systems
(2009)
Phan, Anh Tuan; Farrell, Ronan; Lee, Sang-Gug
Abstract:
This paper presents a high linearity wideband sharp roll-off Opamp-RC low-pass filter (LPF) for Ultra wideband (UWB) applications. The proposed LPF is composed of three biquads’ transfer functions with different Q-factors in series. Sharp roll-off is attributed to the steep slope of the peaking of a biquad transfer function with a high Q-factor. The superposition of these biquads also helps extend the bandwidth of the overall LPF transfer function without the cost of extra power dissipation. The effects of biquad arrangements on noise and linearity performances are investigated. A simple operational amplifier (op-amp) is adopted to ensure high frequency characteristics and high linearity performance for the designed filter. The LPF is implemented in 0.13-μm IBM CMOS process from 1.5 V supply. The measured cutoff frequency is 264 MHz with the pass-band ripple of less than 1 dB. Digital frequency tuning is implemented with 40% of tuning range around the cutoff frequency. The amount of...
http://mural.maynoothuniversity.ie/9581/
Marked
Mark
High Fidelity Modelling of Motorcycle Dynamics
(2018)
O'Kane, Thomas G.
High Fidelity Modelling of Motorcycle Dynamics
(2018)
O'Kane, Thomas G.
Abstract:
Modern racing and high performance road motorcycles have begun to use ever more sophisticated control systems to improve performance and safety. Traction control, anti-wheelie control, engine brake control and in the case of road bikes, anti-lock braking are now ubiquitous. Electronically adjustable suspension damping is becoming ever more common. At the time of writing, no manufacturer uses a high fidelity real time model of the motorcycle and tyres in their control strategies. The use of such a model would assist in integrating separate strategies into an overall vehicle stability strategy. Furthermore, the development of racing and high performance road motorcycles has traditionally depended more on experience and testing than on modelling and simulation. One reason for this has been the lack of availability of a high fidelity motorcycle model suitable for the task. The development of general multibody simulation software such as MSC Adams has been driven primarily by the four wh...
http://mural.maynoothuniversity.ie/12555/
Marked
Mark
The high frequency electrical properties of interconnects on a flexible polyimide substrate including the effects of humidity
(2011)
McGibney, Eoin; Barton, John; Floyd, Liam; Tassie, Paul; Barrett, John
The high frequency electrical properties of interconnects on a flexible polyimide substrate including the effects of humidity
(2011)
McGibney, Eoin; Barton, John; Floyd, Liam; Tassie, Paul; Barrett, John
Abstract:
Flexible circuit board materials can be used to advantage in radio frequency and high-speed digital systems but an obstacle to their use is the lack of availability of information on the electrical properties of materials to high frequencies and, in particular, the variation in dielectric constant and loss tangent as a function of frequency. This makes accurate electromagnetic simulation of high frequency flexible interconnects difficult. The variation of the electrical properties of these materials as a function of environmental parameters, such as humidity, is also unknown at higher frequencies. This paper has, using microwave resonators, investigated the electrical properties from 2 GHz to 18 GHz of a polyimide flexible circuit board material saturated at 25% RH and at 85% RH relative humidity levels. Rigid circuit board materials FR4 and CER-10 were also measured as reference materials. The relative permittivity, epsilon(r), total loss, alpha(T), and loss tangent, tan delta, hav...
http://hdl.handle.net/10468/422
Marked
Mark
Simulation of MEMRISTORS in the presence of a high-frequency forcing function
(2012)
Condon, Marissa; Deaño, Alfredo; Iserles, Arieh
Simulation of MEMRISTORS in the presence of a high-frequency forcing function
(2012)
Condon, Marissa; Deaño, Alfredo; Iserles, Arieh
Abstract:
This reported work is concerned with the simulation of MEMRISTORS when they are subject to high-frequency forcing functions. A novel asymptotic-numeric simulation method is applied. For systems involving high-frequency signals or forcing functions, the superiority of the proposed method in terms of accuracy and efficiency when compared to standard simulation techniques shall be illustrated. Relevant dynamical properties in relation to the method shall also be considered.
http://doras.dcu.ie/17132/
Marked
Mark
Coherent wavelength division multiplexing: a novel transmission format for high spectral density optical communication networks
(2007)
Healy, Tadhg Conor
Coherent wavelength division multiplexing: a novel transmission format for high spectral density optical communication networks
(2007)
Healy, Tadhg Conor
Abstract:
In this thesis a novel transmission format, named Coherent Wavelength Division Multiplexing (CoWDM) for use in high information spectral density optical communication networks is proposed and studied. In chapter I a historical view of fibre optic communication systems as well as an overview of state of the art technology is presented to provide an introduction to the subject area. We see that, in general the aim of modern optical communication system designers is to provide high bandwidth services while reducing the overall cost per transmitted bit of information. In the remainder of the thesis a range of investigations, both of a theoretical and experimental nature are carried out using the CoWDM transmission format. These investigations are designed to consider features of CoWDM such as its dispersion tolerance, compatibility with forward error correction and suitability for use in currently installed long haul networks amongst others. A high bit rate optical test bed constructed...
http://hdl.handle.net/10468/1523
Marked
Mark
High Performance Computing Instrumentation and Research Productivity in U.S. Universities
(2010)
GURDGIEV, CONSTANTIN
High Performance Computing Instrumentation and Research Productivity in U.S. Universities
(2010)
GURDGIEV, CONSTANTIN
Abstract:
This paper studies the relationship between investments in High-Performance Computing (HPC) instrumentation and research competitiveness. Measures of institutional HPC investment are computed from data that is readily available from the Top 500 list, a list that has been published twice a year since 1993 that lists the fastest 500 computers in the world at that time. Institutions that are studied include US doctoral-granting institutions that fall into the very high or high research rankings according to the Carnegie Foundation classifications and additional institutions that have had entries in the Top 500 list. Research competitiveness is derived from federal funding data, compilations of scholarly publications, and institutional rankings. Correlation and Two Stage Least Square regression is used to analyze the research-related returns to investment in HPC. Two models are examined and give results that are both economically and statistically significant. Appearance on the Top 500 ...
http://hdl.handle.net/2262/59246
Marked
Mark
Design of high solids emulsions for dehydration and carotenoids stabilisation
(2017)
Lim, Aaron Soon Liang
Design of high solids emulsions for dehydration and carotenoids stabilisation
(2017)
Lim, Aaron Soon Liang
Abstract:
The application of layered interface in emulsion can improve microencapsulation, protection, and delivery of oil-soluble bioactives in food materials. The present study investigated (i) flocculation in high total solids layer-by-layer (LBL) emulsion and deflocculation at various pH conditions, and whey protein isolate (WPI) concentration and total solids content effects on LBL emulsions stability; (ii) stability and loss kinetics of carotenoids in freeze-dried single-layer (SL) and LBL emulsions with trehalose as wall material; (iii) spray drying of high total solids SL and LBL emulsions with trehalose-low DE maltodextrin (9-12), carbohydrate (trehalose) and non-carbohydrate (WPI), or trehalose-high DE maltodextrin (23-27) as wall materials; and (iv) ability of the SL and LBL spray dried structures to protect encapsulated lutein and all-trans-β-carotene upon storage in the vicinity of the glass transition temperature (Tg). LBL interfacial formation was confirmed by charge reversal i...
http://hdl.handle.net/10468/3862
Marked
Mark
The Identification and Characterisation of Genetic Signals of Selection in High Altitude Populations
(2018)
Cole, Amy
The Identification and Characterisation of Genetic Signals of Selection in High Altitude Populations
(2018)
Cole, Amy
Abstract:
<p>Populations dwelling at high altitude (greater than 2500 meters above sea-level) are exposed to harsh environmental elements including, extreme cold, dietary acculturation, increased UV irradiance and hypobaric hypoxia. There is approximately 60% of the oxygen available to populations at high altitude compared to at sea-level. The ability to adapt to this reduction in oxygen availability is fundamental to the preservation of function, and of life. Identifying and characterising the genes involved in adaptation to hypoxia therefore offers an important and unique insight into hypoxia in general, and can in turn inform on a variety of human conditions and diseases of public health importance.</p> <p>We established a geographically diverse cohort of high altitude populations, from the Himalaya, the Andes and the East African plateau, through fieldwork, collaborations and publically available datasets. Using both dense genotype data and whole genome sequencing we des...
https://epubs.rcsi.ie/phdtheses/248
Marked
Mark
Direct and Indirect Classification of High-Frequency LNA Performance using Machine Learning Techniques
(2007)
Hung, Peter; McLoone, Sean F.; Sanchez, Magdalena; Farrell, Ronan; Zhang, Guoyan
Direct and Indirect Classification of High-Frequency LNA Performance using Machine Learning Techniques
(2007)
Hung, Peter; McLoone, Sean F.; Sanchez, Magdalena; Farrell, Ronan; Zhang, Guoyan
Abstract:
The task of determining low noise amplifier (LNA) high-frequency performance in functional testing is as challenging as designing the circuit itself due to the difficulties associated with bringing high frequency signals off-chip. One possible strategy for circumventing these difficulties is to attempt to predict the high frequency performance measures using measurements taken at lower, more accessible, frequencies. This paper investigates the effectiveness of machine learning based classification techniques at predicting the gain of the amplifier, a key performance parameter, using such an approach. An indirect artificial neural network (ANN) and direct support vector machine (SVM) classification strategy are considered. Simulations show promising results with both methods, with SVMs outperforming ANNs for the more demanding classification scenarios.
http://mural.maynoothuniversity.ie/1338/
Marked
Mark
Deep Tone Mapping Operator for High Dynamic Range Images
(2019)
Smolic, Aljosa; Rana, Aakanksha; Singh, Praveer; Valenzise, Giuseppe; Dufaux, Frederic;...
Deep Tone Mapping Operator for High Dynamic Range Images
(2019)
Smolic, Aljosa; Rana, Aakanksha; Singh, Praveer; Valenzise, Giuseppe; Dufaux, Frederic; Komodakis, Nikos
Abstract:
A computationally fast tone mapping operator (TMO) that can quickly adapt to a wide spectrum of high dynamic range (HDR) content is quintessential for visualization on varied low dynamic range (LDR) output devices such as movie screens or standard displays. Existing TMOs can successfully tone-map only a limited number of HDR content and require an extensive parameter tuning to yield the best subjective-quality tone-mapped output. In this paper, we address this problem by proposing a fast, parameter-free and scene-adaptable deep tone mapping operator (DeepTMO) that yields a high-resolution and high-subjective quality tone mapped output. Based on conditional generative adversarial network (cGAN), DeepTMO not only learns to adapt to vast scenic-content (e.g., outdoor, indoor, human, structures, etc.) but also tackles the HDR related scene-specific challenges such as contrast and brightness, while preserving the fine-grained details. We explore 4 possible combinations of Generator-Discr...
http://hdl.handle.net/2262/91575
Displaying Results 1 - 25 of 11731 on page 1 of 470
1
2
3
4
5
6
7
8
9
10
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Item Type
Book (20)
Book chapter (181)
Conference item (816)
Contribution to newspaper/m... (3)
Doctoral thesis (1098)
Journal article (6132)
Master thesis (research) (108)
Master thesis (taught) (75)
Multimedia (1)
Report (676)
Review (16)
Working paper (172)
Other (2433)
Institution
Dublin City University (1124)
NUI Galway (1559)
Maynooth University (1059)
Trinity College Dublin (2022)
University College Cork (1353)
University College Dublin (1058)
University of Limerick (960)
Dublin Institute of Technology (768)
Mary Immaculate College (3)
Lenus (612)
Dundalk Institute of Techno... (30)
Marine Institute (121)
Teagasc (454)
All Ireland Public Health R... (292)
Royal College of Surgeons i... (231)
Connacht-Ulster Alliance (85)
Peer Review Status
Peer reviewed (5498)
Non peer reviewed (632)
Unknown (5601)
Year
2021 (21)
2020 (653)
2019 (850)
2018 (1447)
2017 (858)
2016 (806)
2015 (667)
2014 (827)
2013 (881)
2012 (665)
2011 (719)
2010 (560)
2009 (462)
2008 (343)
2007 (290)
2006 (266)
2005 (221)
2004 (170)
2003 (148)
2002 (148)
2001 (77)
2000 (95)
1999 (71)
1998 (47)
1997 (56)
Language
English (8474)
Italian (1)
built by Enovation Solutions