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Articles 1 - 18 of 18
Full-Text Articles in Engineering
A Dual Band 450lte/Gsm900 Pifa For Portable Devices, Abraham Loutridis, Kansheng Yang, Matthias John, Max Ammann
A Dual Band 450lte/Gsm900 Pifa For Portable Devices, Abraham Loutridis, Kansheng Yang, Matthias John, Max Ammann
Conference Papers
A dual band PIFA antenna for portable devices is presented. It operates in the 450 LTE (449 − 461 MHz) and GSM 900 (876 – 922 MHz) frequency bands. The proposed antenna which has a very compact size of 7 (0.01λ0) × 7 × 70 (0.1λ0) mm3 and is suitable to integrate in small envelopes, consists of two branches and a metallic patch. The low cost and easily fabricated antenna offers high total efficiency and gain in both bands. Measured and simulated results are provided.
Energy Managment Of Photovoltaic Charging Station (Pv-Cs) For Green University Campus Transportation, Ayda Esfandyari, Brian Norton, Michael Conlon, Sarah Mccormack
Energy Managment Of Photovoltaic Charging Station (Pv-Cs) For Green University Campus Transportation, Ayda Esfandyari, Brian Norton, Michael Conlon, Sarah Mccormack
Conference Papers
Battery Electric Vehicles (BEVs) have been recognised as the ideal solution for lowering the CO2 emissions in the transport sector and helping to achieve a sustainable future. When BEV technology is leveraged with a solar energy source such as a Photovoltaic Charging Station (PV-CS), the CO2 saving potential is extended to both generation and consumption points. Due to the intermittent nature of our solar resource, once the PV-CS is combined with a storage unit, energy production is achieved without risking the disruption to power supply reliability and quality. Technological University Dublin (DIT) has recognised the viability of this …
The Feasibility Of Utilising Compressed Natural Gas As Part Of A Systematic Approach To Establishing The Necessary Groundwork For The Hydrogen Based Transport Economy, James Brunton, John Howlett, David Kennedy
The Feasibility Of Utilising Compressed Natural Gas As Part Of A Systematic Approach To Establishing The Necessary Groundwork For The Hydrogen Based Transport Economy, James Brunton, John Howlett, David Kennedy
Conference Papers
One key objective for vehicle manufacturers is to develop technology and infrastructure to facilitate the progression from combustion to conversion by the year 2050. In the short to medium term however, the combustion of fossil fuels such as petrol and diesel, coupled with advanced transmission innovations and emission control technology that are governed by strict Euro VI regulations appears to be the main path forward for the transport sector and the environment. This paper presents the feasibility of utilising the developing compressed natural gas network capabilities as part of a systematic approach to establishing the necessary groundwork for a hydrogen …
Sediment Transport Modelling On The River Bandon, John Gamble, Joseph R. Harrington
Sediment Transport Modelling On The River Bandon, John Gamble, Joseph R. Harrington
Conference Papers
In November 2009 Ireland was subject to a severe weather event, causing widespread flooding nationwide. One of the worst effected towns was the town of Bandon in County Cork which regularly floods. The River Bandon is located in the South Western River District (SWRBD) with a catchment area of 608km2 . The River Bandon offers a positive environment for biodiversity, facilitating habitats for some endangered species. The River Bandon is planned to undergo significant river improvement works. This paper presents the findings of an extensive sediment sampling, testing and analysis programme, including for suspended and bed sediments and sediment loadings. …
Lifelong Housing Design: User Feedback Evaluation Of Smart Objects And Accessible Houses For Healthy Ageing, Matteo Zallio, Niccolò Casiddu
Lifelong Housing Design: User Feedback Evaluation Of Smart Objects And Accessible Houses For Healthy Ageing, Matteo Zallio, Niccolò Casiddu
Conference Papers
According to the latest research by the European Community and ISTAT (Italian National Institute of Statistics) surveys, Europe has the highest average age for its population. According to those data, in the near future, it could be necessary to move from a welfare model based on the centralization of care systems, to a system based on the distribution of certain healthcare facilities [1]. This means that the ageing population is ever increasing, thanks to better lifestyles, innovative medical care and wider access to different services. This work seeks to observe and analyse key implications of architectural and interior design features …
Modelling And Energy Management Optimisation Of Battery Energy Storage System Based Photovoltaic Charging Station (Pv-Cs) For University Campus, Ayda Esfandyari, Brian Norton, Michael Conlon
Modelling And Energy Management Optimisation Of Battery Energy Storage System Based Photovoltaic Charging Station (Pv-Cs) For University Campus, Ayda Esfandyari, Brian Norton, Michael Conlon
Conference Papers
As utilization of Photovoltaic Charging Stations (PV-CS) that generate clean electricity from the sun increase, Technological University Dublin (DIT) adopts this application for accommodating the required charge of small campus Battery Electric Vehicles (BEVs). This paper presents the virtual simulation of the 10.5 kW Battery Energy Storage System (BESS) based PV-CS model. Transient System Simulation (TRNSYS) built-in climatic data and modular structure properties were adopted to replicate the experimentally proposed PV-CS, where special attention was paid to the electrical measurments and energy flow signals. The objective was set to model the PV-CS system, formulate an energy managment optimisation and justify …
Folded Meandered Monopole For Emerging Smart Metering & M2m Applications In The Lower Uhf Band Primary Tabs, Abraham Loutridis, Matthias John, Max Ammann
Folded Meandered Monopole For Emerging Smart Metering & M2m Applications In The Lower Uhf Band Primary Tabs, Abraham Loutridis, Matthias John, Max Ammann
Conference Papers
A compact folded meander-line monopole for smart metering and M2M applications is presented. It operates over a tunable frequency range of 412-475 MHz. The miniaturization is based on a double-sided meandering structure and the rear positioning of the feeding and shorting strips. A sliding via connector is used for tuning. The proposed antenna is compact 15 mm (0.02 λ0) × 42.3 mm (0.058 λ0), low cost and easily fabricated. A 21-24% total efficiency was provided across the tunable band. Installed performance was evaluated in a meter housing placed on a concrete wall. Measured and simulated results are provided.
Investigation Of Humidity And Temperature Response Of A Silica Gel Coated Microfiber Coupler, Yuliya Semenova, Gerald Farrell, Dejun Liu
Investigation Of Humidity And Temperature Response Of A Silica Gel Coated Microfiber Coupler, Yuliya Semenova, Gerald Farrell, Dejun Liu
Conference Papers
The humidity and temperature responses of a microfiber coupler (MFC) coated with silica gel are investigated. Two MFC structures with different waist diameters of 2.5 and 3.5 μm were fabricated by fusing and tapering two single-mode fibers using a microheater brushing technique. The influences of the coating thickness and tapered waist diameter on the sensing performance are analyzed. For the proposed sensor with a waist diameter of 2.5 μm and 8-layers thick coating, the change in the relative humidity (RH) results in an exponential blueshift with a maximum sensitivity of 1.6 nm/% RH in the range from 70 to 86% …
Agarose Coated Spherical Micro Resonator For Humidity Measurements, Arun Mallik, Vishnu Kavungal, Yuliya Semenova, Dejun Liu
Agarose Coated Spherical Micro Resonator For Humidity Measurements, Arun Mallik, Vishnu Kavungal, Yuliya Semenova, Dejun Liu
Conference Papers
A new type of fiber optic relative humidity (RH) sensor based on an agarose coated silica microsphere resonator is proposed and experimentally demonstrated. Whispering gallery modes (WGMs) in the micro resonator are excited by evanescent coupling using a tapered fiber with ~3.3 μm waist diameter. A change in the relative humidity of the surrounding the resonator air induces changes in the refractive index (RI) and thickness of the Agarose coating layer. These changes in turn lead to a spectral shift of the WGM resonances, which can be related to the RH value after a suitable calibration. Studies of the repeatability, …
Battery Energy Storage System (Bess) Based Photovoltaic Charging Station (Pv-Cs) For A Green University Transportation, Ayda Esfandyari, Agata Świerc, Brian Norton, Michael Conlon, Sarah Mccormack
Battery Energy Storage System (Bess) Based Photovoltaic Charging Station (Pv-Cs) For A Green University Transportation, Ayda Esfandyari, Agata Świerc, Brian Norton, Michael Conlon, Sarah Mccormack
Conference Papers
With the trends encouraged by governments and political parties to increase the adoption of Renewable Energy Sources (RES); solar energy, and in particular photovoltaics (PV), is poised as an excellent candidate to offset the energy requirements of charging stations (PV-CS) for Electric Vehicles (BEV). This work presents a 10.5 kW Transient System Simulation (TRNSYS) model of a university campus PV-CS to determine sizing as well to determine the best operating strategies for a Battery Energy Storage System (BESS). The economical optimization model is formulated via theoretical approach adopting the Simple Payback Period (SPP) indicator. The optimization takes into account the …
A Comparative Study Of Zn-Mn Electrodeposition From Deep Eutectic Solvents And Aqueous Electrolytes, Jelena Bajat, Mihael Bucko, David Culliton, Tony Betts
A Comparative Study Of Zn-Mn Electrodeposition From Deep Eutectic Solvents And Aqueous Electrolytes, Jelena Bajat, Mihael Bucko, David Culliton, Tony Betts
Conference Papers
The production of Zn-Mn coatings with high Mn and low oxygen content from additive free choline chloride/urea deep eutectic solvent (DES) is reported in this work. Alloy coatings containing high Mn contents (~30 at.% Mn) show the highest corrosion resistance amongst zinc alloys [1]. However, in order to obtain Mn-rich deposits on steel from a simple aqueous bath, a significant cathodic polarization or high deposition current density is necessary. Under such conditions, the Zn 2+ reduction reaction is under diffusion control, leading to the formation and growth of dendrites. In addition intensive hydrogen evolution significantly reduces the current efficiency, often …
Porous Silica Coated Spherical Microresonator For Vapor Phase Sensing Of Ammonia At A Sub-Ppm Level, Arun Kumar Mallik, Gerald Farrell, Dejun Liu, Vishnan Kavungal, Qiang Wu, Yuliya Semenova
Porous Silica Coated Spherical Microresonator For Vapor Phase Sensing Of Ammonia At A Sub-Ppm Level, Arun Kumar Mallik, Gerald Farrell, Dejun Liu, Vishnan Kavungal, Qiang Wu, Yuliya Semenova
Conference Papers
A new type of fiber optic sensor for detection and quantification of ammonia (NH3) vapors is proposed and experimentally demonstrated. This sensor is based on a spherical silica micro resonator coated with porous silica gel. Whispering gallery modes (WGMs) in the micro resonator are excited by evanescent coupling to a tapered fiber with a 3.3 µm waist diameter. The optical properties of the porous silica layer change when it is exposed to ammonia vapor, leading to a spectral shift of the WGM resonant wavelengths. The sensitivity of the proposed sensor has been tested by exposing it to different low level …
Enhancing Student Learning By Narrowing The Gap Between Feedback Giving And Feedback Receiving, Eileen Goold Dr
Enhancing Student Learning By Narrowing The Gap Between Feedback Giving And Feedback Receiving, Eileen Goold Dr
Conference Papers
Feedback is one of the most powerful influences on learning and achievement. However the mere provision of feedback to students does not necessarily lead to improved learning. Feedback is ineffective if it does not close the gap between learning goals and students’ performance. Often students do not have clear goals and they do not know what learning activities will improve their learning performance. Consequently the opportunity to learn from the feedback is lost. Learning is a social process and while young people have increasingly strong social needs they struggle with academic language. This study investigates the influence of lecturers’ feedback …
Simultaneous Rotation And Distance Measurement Using Multiband Circularly Polarized Radio Link, Adam Narbudowicz
Simultaneous Rotation And Distance Measurement Using Multiband Circularly Polarized Radio Link, Adam Narbudowicz
Conference Papers
The paper proposes a method for simultaneous measurement of rotation and distance by using a multi-band circularly polarized radio links. The method is realized using a standard dual-band patch antenna, operating at 1.58 GHz and 2.27 GHz, with respective axial ratios of 1.7 dB and 1.0 dB. Both link distance and antenna rotation were varied from a reference position/orientation from -40 mm to +40 mm and from 0° to 360°, producing a total set of 125 samples. For a noiseless link the distance change and rotation were predicted with respective mean errors of 1.9 mm and 7.3°.
Lightweight And Cost Efficient Spaceborn Patch Antenna, Korbinian Schraml, Ralf Wilke, Dirk Heberling, Adam Narbudowicz
Lightweight And Cost Efficient Spaceborn Patch Antenna, Korbinian Schraml, Ralf Wilke, Dirk Heberling, Adam Narbudowicz
Conference Papers
In order to achieve lightweight yet low cost antennas for use in a geostationary space environment, the GeReLEO-SMART project develops a substrate-based, multilayer antenna structure which can replace traditional horn antennas as feeds for reflector antennas. To verify a design, an example mission is developed, consisting of a 2×2 patch antenna array with an integrated stripline bandpass filter. The operation frequency is 25.935 GHz. This multilayer antenna will be tested on board of the German technology demonstration mission “Heinrich-Hertz” (H2SAT). The design passed all tests for space qualification without decrease in performance.
Switchless Reconfigurable Antenna With 360° Steering, Adam Narbudowicz
Switchless Reconfigurable Antenna With 360° Steering, Adam Narbudowicz
Conference Papers
—A novel reconfigurable antenna capable of rotating a bidirectional pattern by 360◦ in azimuth is proposed. The antenna has two ports, no aperture switching components, and offers a more compact solution than an array. It provides a reconfigurable pattern in the band 2.525–2.595 GHz and a fixed omnidirectional pattern from 2.235 to 2.725 GHz. The measured gains for four investigated configurations are between 2.1 and 3.1 dBi with total efficiencies between 80% and 89%. The antenna is intended to operate with software defined radio [digital beamforming or multiple-input–multiple-output (MIMO)], where the potential of pattern generation using the dual-port antenna can …
A Coplanar Vivaldi Antenna With Integrated Filter For Ka-Band, Kansheng Yang, Abraham Loutridis, Xiulong Bao, Patrick Mcevoy, Max Ammann
A Coplanar Vivaldi Antenna With Integrated Filter For Ka-Band, Kansheng Yang, Abraham Loutridis, Xiulong Bao, Patrick Mcevoy, Max Ammann
Conference Papers
A new design approach of a dual-stub coplanar Vivaldi antenna with integrated filter is presented. The dual-stub excites coupling between a parasitic elliptical element and tapered slots. The dimensions of the parasitic element are studied and optimized for wide beamwidth. The band pass filter is used for sub harmonic suppression and pattern shaping.
Team Training In Safety And Security Via Simulation: A Practical Dimension Of Maritime Education And Training, Michael Baldauf, Dimitrios Dalaklis, Aditi Kataria
Team Training In Safety And Security Via Simulation: A Practical Dimension Of Maritime Education And Training, Michael Baldauf, Dimitrios Dalaklis, Aditi Kataria
Conference Papers
In the rather extended maritime domain, a term that should be the epicentre of any successful careerbuilding path is tailor-made training via cutting-edge simulators. To cut a long story short, the breadth of operations on the various types of ships has expanded to such a large extent that extensive practical training drills are becoming a compelling need to contribute to competent seafarers. This type of training can guarantee the positive outcome in their decision-making process and help the seafarers often being under continuous pressure, to suitably respond to the various safety and security threats on-board a vessel. The several conventions …