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Articles 31 - 36 of 36
Full-Text Articles in Engineering
Supervision Of Community Based Microgrids: An Economic Model Predictive Control Approach, Francesco Tedesco, Lubna Mariam, Malabika Basu, Alessandro Casavola, Michael F. Conlon
Supervision Of Community Based Microgrids: An Economic Model Predictive Control Approach, Francesco Tedesco, Lubna Mariam, Malabika Basu, Alessandro Casavola, Michael F. Conlon
Conference papers
Abstract— In this paper, an Economic Model Predictive Control (EMPC) approach has been presented to manage a Community-based microgrid (C-µGCC) at the pricing level. The main task is at satisfying the demand at prosumer sides and, at the same time, optimizing various µ-Grid contrasting objectives. Emphasis has been given to the operational constraints related to the components lifetime, whose satisfaction would be beneficial for the grid in that the maintenance and replacement costs would be reduced. A simulative analysis has been carried out on the basis of available measured data related to a location in Dublin, Ireland. Results show the …
Spontaneous Mirror-Symmetry Breaking In Different Non-Chiral Liquid Crystalline Systems, Yuri Panarin
Spontaneous Mirror-Symmetry Breaking In Different Non-Chiral Liquid Crystalline Systems, Yuri Panarin
Conference papers
Spontaneous Mirror-Symmetry and appearance of chiral self-assembled superstructures in non-chiral systems represents a fascinating field of contemporary research with potential applications. For long time the formation of helical superstructure was associated with enantiomeric chiral molecules. Later on Pasteur showed that that the racemic mixtures of chiral molecules can resolve spontaneously into two chiral forms. Such deracemization or symmetry breaking in racemic mixtures was observed during crystallization. In recent years interest in mirror-symmetry breaking extended to soft matter systems.
An Overview Of The Development Of Cement-Based Batteries For The Cathodic Protection Of Embedded Steel In Concrete, Aimee Byrne, Niall Holmes, Brian Norton
An Overview Of The Development Of Cement-Based Batteries For The Cathodic Protection Of Embedded Steel In Concrete, Aimee Byrne, Niall Holmes, Brian Norton
Conference papers
This paper presents an overview of the cement-based batteries developed in DIT for use in the cathodic protection of embedded steel in reinforced concrete undergoing chloride-induced corrosion. Cathodic protection delivers an external current (approximately 20mA per m2 of embedded steel) which effectively polarises the internal current generated during corrosion. The batteries developed in DIT comprise of a cement-based electrolyte containing different additives including sand, aggregate, salts, carbon black and plasticiser with protruding anode and cathode metal plates. These batteries produced an initial electrical output of 1.5V and 23mA through a 10 resistor as measured using data acquisition units and a …
Preliminary Investigation Into The Rate Of Carbonation Of Concrete Blocks Under Normal Production Yard Conditions, Aimee Byrne, Eanna Nolan
Preliminary Investigation Into The Rate Of Carbonation Of Concrete Blocks Under Normal Production Yard Conditions, Aimee Byrne, Eanna Nolan
Conference papers
The release of CO2 from calcination during the manufacture of cement can be partially or fully offset by the CO2 it naturally absorbs during its lifetime. This paper reports results from a preliminary investigation into the rate of carbonation in concrete blocks stacked in a production yard over a period of 6 months. The blocks were stacked in a normal manner under natural exposure conditions. Carbonation progress was determined by splitting the blocks and spraying the freshly exposed surface with a phenolphthalein solution at intervals over the test period. It was found that the rate of the carbonation front progression …
The Accuracy Of A 2d And 3d Dendritic Tip Scaling Parameter In Predicting The Columnar To Equiaxed Transition (Cet), M. Seredynski, Marek Rebow, J. Banaszek
The Accuracy Of A 2d And 3d Dendritic Tip Scaling Parameter In Predicting The Columnar To Equiaxed Transition (Cet), M. Seredynski, Marek Rebow, J. Banaszek
Conference papers
The dendrite tip kinetics model accuracy relies on the reliability of the stability constant used, which is usually experimentally determined for 3D situations and applied to 2D models. The paper reports authors` attempts to cure the situation by deriving 2D dendritic tip scaling parameter for aluminium-based alloy: Al-4wt%Cu. The obtained parameter is then incorporated into the KGT dendritic growth model in order to compare it with the original 3D KGT counterpart and to derive two-dimensional and three-dimensional versions of the modified Hunt’s analytical model for the columnar-to-equiaxed transition (CET). The conclusions drawn from the above analysis are further confirmed through …
Exploring The Role Of Spatial Cognition In Problem Solving, Gavin Duffy, Sheryl Sorby, Steven Nozaki, Brian Bowe
Exploring The Role Of Spatial Cognition In Problem Solving, Gavin Duffy, Sheryl Sorby, Steven Nozaki, Brian Bowe
Conference papers
While spatial aptitude is acknowledged as a key cognitive ability that accompanies success in STEM education, less is reported about the qualitative differences between weak and strong visualisers in how they approach and engage with assessments in STEM education. In this paper, we study one particular aspect of the STEM curriculum - solving convergent ‘word’ problems in mathematics - in an attempt to discern quantitative and qualitative differences between the approaches weak and strong visualisers adopt when solving these problems. The paper is a work-in-progress that started with a search for suitable convergent mathematics problems which were then presented to …