2017
Authors
Ma K.; Li R.; Hernando-Gil I.; Li F.;
Publication
IEEE Transactions on Power Systems
Abstract
This letter is an enhancement to our previous paper that quantifies additional reinforcement costs (ARCs) for low-voltage assets under moderate degree of three-phase imbalance. The original formulas cause an overestimation of the ARCs under severe imbalance. This letter first quantifies the threshold of the severe degree of imbalance (DIB), below which the original formulas are applicable. Then, the ARC formulas are extended to account for the whole range of DIB. Case studies demonstrate that when the asset loading level is below 33.3% (50%) for a feeder (a transformer), the DIB never exceeds the threshold and the original ARC formulas are applicable; otherwise, the DIB can exceed the threshold and the extended formulas yield correct ARCs.
2017
Authors
Ferrera, E; Rossini, R; Baptista, AJ; Evans, S; Hovest, GG; Holgado, M; Lezak, E; Lourenco, EJ; Masluszczak, Z; Schneider, A; Silva, EJ; Werner Kytola, O; Estrela, MA;
Publication
SUSTAINABLE DESIGN AND MANUFACTURING 2017
Abstract
This paper presents an overview of the work under development within MAESTRI EU-funded collaborative project. The MAESTRI Total Efficiency Framework (MTEF) aims to advance the sustainability of manufacturing and process industries by providing a management system in the form of a flexible and scalable platform and methodology. The MTEF is based on four pillars: (a) an effective management system targeted at process continuous improvement; (b) Efficiency assessment tools to support improvements, optimisation strategies and decision support; (c) Industrial Symbiosis paradigm to gain value from waste and energy exchange; (d) an Internet-of-Things infrastructure to support easy integration and data exchange among shop-floor, business systems and tools.
2017
Authors
Lopes, CM; Egipto, R; Pedroso, V; Pinto, PA; Braga, R; Neto, M;
Publication
Acta Horticulturae
Abstract
Climatic data collected between 1963 and 2010 in the Portuguese Dão wine growing region were analysed to evaluate the relationship between climatic indices, seasonal weather and the berry composition of the red cultivar 'Touriga Nacional'. The trends over time for the classical temperature-based indices (growing season temperature, growing degree days, biologically effective degree days, Huglin index and cool night index) were significantly positive and can be mostly attributed to the effects of climate change. The dryness index showed a negative trend although not significant. These indices were able to explain 9 and 45% of the variability in total soluble solids and titratable acidity, respectively, using a multiple stepwise regression analysis. The proportion of explained variability was much improved, to 52% for total soluble solids and 65% for titratable acidity, when new climatic indices were used. The new indices resulted from the generalisation of the classical indices based upon chronological time specification as well as taking into consideration the phenological time instead. Our data shows that the classical climatic indices were not able to sufficiently explain the berry composition, and that new climatic indices should be used for a better understanding of the climate drivers of berry quality.
2017
Authors
Escobar, JW; Adarme-Jaimes, W; Clavijo-Buriticá, N;
Publication
Revista Facultad de Ingeniería
Abstract
2017
Authors
Garcia-Alonso, L; Iorio, F; Matchan, A; Fonseca, N; Jaaks, P; Falcone, F; Bignell, G; McDade, SS; Garnett, MJ; Saez-Rodriguez, J;
Publication
Abstract
2017
Authors
Silva, NA; Almeida, AL; Costa, JC; Gomes, M; Alves, RA; Guerreiro, A;
Publication
THIRD INTERNATIONAL CONFERENCE ON APPLICATIONS OF OPTICS AND PHOTONICS
Abstract
In this work we develop a theoretical model to describe the propagation of an optical pulse in a 4-level atomic system. We investigate the existence of dissipative soliton solutions and analyze the stability of these solitary waves, comparing the analytical results with computational simulations based on the effective (1+1)-dimensional model derived from the Maxwell-Bloch equation under the slowly-varying envelope approximation.
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