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Publicações

2023

P2P market coordination methodologies with distribution grid management

Autores
Faria, AS; Soares, T; Orlandini, T; Oliveira, C; Sousa, T; Pinson, P; Matos, M;

Publicação
SUSTAINABLE ENERGY GRIDS & NETWORKS

Abstract
As prosumers and energy communities gain prominence in power systems, energy trading between prosumers in local P2P markets is paramount. Within this novel market design, peers can directly exchange energy with each other, leading to economic advantages while supporting the decarboniza-tion of the sector. To ensure that voltage and congestion issues are properly addressed, a thorough coordination between the P2P market and the Distribution System Operator is required. This paper presents and compares three mutual-benefit coordination methods. The first method entails applying product differentiation on an iterative basis to avoid exceeding the lines thermal limits, which is performed through penalties on P2P exchanges that may be overloading the network. The second method uses the P2P market with an AC-OPF, ensuring network operation through a flexibility market via upward and downward flexibility. The last one proposes an integrated operation of the P2P market with AC-OPF. All methods are assessed in a typical distribution network with high prosumers integration. The results show that the second method is the one that, fulfilling the network constraints, presents greater social welfare.& COPY; 2023 Elsevier Ltd. All rights reserved.

2023

The role of human capital, structural change, and institutional quality on Brazil's economic growth over the last two hundred years (1822-2019)

Autores
Dore, NI; Teixeira, AAC;

Publicação
STRUCTURAL CHANGE AND ECONOMIC DYNAMICS

Abstract
A growing body of empirical literature has considered very long-time horizons when studying the sources of a country's economic growth. Nevertheless, the growth experiences of emerging economies (EEs) have been overlooked. This study examines to what extent human capital, structural change, and institutional quality contribute to the economic growth of one of the largest EEs in the world, Brazil, between 1822 and 2019. Resorting to the ARDL cointegration technique, the results suggest that years of schooling (human capital) have a positive and long-lasting impact on Brazil's economic growth. Moreover, there is solid evidence that sectoral changes toward more advanced and sophisticated manufacturing basis is growth-enhancing in the country. Finally, institutional quality does not constitute over the very long-run, a significant booster of Brazilian economic growth.

2023

Energy Efficient Software in an Engineering Course

Autores
Saraiva, J; Pereira, R;

Publicação
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abstract
Sustainable development has become an increasingly important theme not only in the world politics, but also an increasingly central theme for the engineering professions around the world. Software engineers are no exception as shown in various recent research studies. Despite the intensive research on green software, today’s undergraduate computing education often fails to address our environmental responsibility. In this paper, we present a module on energy efficient software that we introduced as part of an advanced course on software analysis and testing. In this module students study techniques and tools to analyze and optimize energy consumption of software systems. Preliminary results of the first four instances of this course show that students are able to optimize the energy consumption of software systems. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

2023

A congestion-based local search for transmission expansion planning problems

Autores
Gomes, PV; de Oliveira, LE; Saraiva, J;

Publicação
Swarm Evol. Comput.

Abstract

2023

IMPACT OF UNTREATED AORTIC STENOSIS ON POST-NON-CARDIAC SURGERY OUTCOMES: A META-ANALYSIS

Autores
Sousa, J; Teixeira, R; Azevedo, A;

Publicação
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY

Abstract

2023

A hybrid modeling approach for resilient agri-supply network design in emerging countries: Colombian coffee supply chain

Autores
Clavijo-Buritica, N; Triana-Sanchez, L; Escobar, JW;

Publicação
SOCIO-ECONOMIC PLANNING SCIENCES

Abstract
Sustainability and resilience in Agri-Food Supply Chains is a challenging topic of current interest in the research community. Resilience for Agri-Food Supply Chain (AFSC) is the capability of the supply network to manage and mitigate disruptions due to global warming and natural phenomena such as landslides and floods of crops, among others caused by humans. A significant challenge is to design efficient and resilient AFSCs in emerging countries while perishability constraints are considered. A methodology to design an AFSC for emerging countries is addressed in this research. The phenomena that aid in identifying critical aspects of the AFSC affecting their resilience are identified. The former approach combines optimization and simulation schemes by considering resilience metrics related to availability and connectivity. Indeed, the solution approach addresses the uncer-tainty by using simulation of disruptive events and finding resilient designs using mathematical programming. The proposed framework has been evaluated in a Colombian coffee supply chain. The obtained results show the efficiency of the proposed scheme to design AFSCs and allow the practitioners to measure, predict, compare, and improve the level of resilience of their supply chains (SCs).

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