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Gaia Data Release 3: Mapping the asymmetric disc of the Milky Way

Drimmel, R. (author), Romero-Gomez, M. (author), Chemin, L. (author), Ramos, P. (author), Poggio, E. (author), Ripepi, V. (author), Andrae, R. (author), Blomme, R. (author), Hladczuk, N.A. (author)

Context. With the most recent Gaia data release, the number of sources with complete 6D phase space information (position and velocity) has increased to well over 33 million stars, while stellar astrophysical parameters are provided for more than 470 million sources, and more than 11 million variable stars are identified. Aims. Using the...

journal article 2023

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Shipping Canals in Transition

Hein, C.M. (author), Luning, Sabine (author), Meyer, Han (author), Ramos, Stephen J. (author), Van de Laar, Paul (author)

Shipping canals have supported maritime traffic and port development for many centuries. Radical transformations of these shipping landscapes through land reclamation, diking, and canalization were celebrated as Herculean works of progress and modernity. Today, shipping canals are the sites of increasing tension between economic growth and...

contribution to periodical 2023

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A Scalable Distributed Dynamical Systems Approach to Learn the Strongly Connected Components and Diameter of Networks

Reed, Emily A. (author), Ramos, Guilherme (author), Bogdan, Paul (author), Gonçalves Melo Pequito, S.D. (author)

Finding strongly connected components (SCCs) and the diameter of a directed network play a key role in a variety of machine learning and control theory problems. In this article, we provide for the first time a scalable distributed solution for these two problems by leveraging dynamical consensus-like protocols to find the SCCs. The proposed...

journal article 2023

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Fractional cyber-neural systems — A brief survey

Reed, Emily (author), Chatterjee, Sarthak (author), Ramos, Guilherme (author), Bogdan, Paul (author), Gonçalves Melo Pequito, S.D. (author)

Neurotechnology has made great strides in the last 20 years. However, we still have a long way to go to commercialize many of these technologies as we lack a unified framework to study cyber-neural systems (CNS) that bring the hardware, software, and the neural system together. Dynamical systems play a key role in developing these...

review 2022

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An overview of structural systems theory

Ramos, Guilherme (author), Aguiar, A. Pedro (author), Gonçalves Melo Pequito, S.D. (author)

This paper provides an overview of the research conducted in the context of structural (or structured) systems. These are parametrized models used to assess and design system theoretical properties without considering a specific realization of the parameters (which could be uncertain or unknown). The research in structural systems led to a...

journal article 2022

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Sustainable energy consumption

Ramos, Carlos (author), Vale, Zita (author), Palensky, P. (author), Nishi, Hiroaki (author)

contribution to periodical 2021

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Guidelines for Studying Diverse Types of Compound Weather and Climate Events

Bevacqua, Emanuele (author), De Michele, Carlo (author), Manning, Colin (author), Couasnon, A.A.O. (author), Ribeiro, Andreia F.S. (author), Ramos, Alexandre M. (author), Ragno, E. (author), Saunders, Kate (author), Zhang, Tianyi (author)

Compound weather and climate events are combinations of climate drivers and/or hazards that contribute to societal or environmental risk. Studying compound events often requires a multidisciplinary approach combining domain knowledge of the underlying processes with, for example, statistical methods and climate model outputs. Recently, to aid...

journal article 2021

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Structurally quotient fixed modes

Ramos, Guilherme (author), Aguiar, A. Pedro (author), Gonçalves Melo Pequito, S.D. (author)

We provide a necessary and sufficient graph-theoretical characterization of quotient fixes modes occurring in parametric decentralized control systems. Specifically, we introduce the notion of structurally quotient fixed modes (SQFMs) that generically captures the quotient fixed modes and only depends on the system's structure. Additionally,...

journal article 2021

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The Future of Information Systems in a Post-COVID World by TC8 (Information Systems)

Ramos, Isabel (author), Mackrell, Dale (author), van der Merwe, Alta (author), Pries-Heje, Jan (author), Ralyté, Jolita (author), Stirna, Janis (author), Krogstie, John (author), Jones, M. (author), Janssen, M.F.W.H.A. (author)

This chapter consists of several sections which contain contributions from members of IFIP Technical Committee 8 (Information Systems). We highlight the accomplishments of Technical Committee 8 (TC8) and its working groups over its 50 years history, and then envisage possible strategies for the future of information systems (IS) in a post...

book chapter 2021

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Identifying compatible locations for wave energy exploration with different wave energy devices in Madeira Islands

Ramos, Sara (author), Diaz, Hugo (author), Lavidas, G. (author), Soares, Carlos Guedes (author)

This paper aims to assess the techno-economic suitability of different marine areas for the<br/>nearshore and offshore wave energy exploration in the Madeira Islands, while avoiding conflict with any technical,<br/>environmental, legal or other use restriction. A wave energy device is also <br/>evaluated, which could constitute the best...

book chapter 2020

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Route choice behaviour and travel information in a congested network: Static and dynamic recursive models

Ramos, G.M. (author), Mai, Tien (author), Daamen, W. (author), Frejinger, Emma (author), Hoogendoorn, S.P. (author)

Travel information has the potential to influence travellers choices, in order to steer travellers to less congested routes and alleviate congestion. This paper investigates, on the one hand, how travel information affects route choice behaviour, and on the other hand, the impact of the travel time representation on the interpretation of...

journal article 2020

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Expansion planning of the North Sea offshore grid: Simulation of integrated governance constraints

Gorenstein Dedecca, J. (author), Lumbreras, Sara (author), Ramos, Andrés (author), Hakvoort, R.A. (author), Herder, P.M. (author)

The development of offshore transmission and wind power generation in the North Sea of Europe is advancing fast, but there are significant barriers to an integrated offshore grid in the region. This offshore grid is a multi-level, multi-actor system requiring a governance decision-making approach, but there is currently no proven governance...

journal article 2018

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RNA sequencing data integration reveals an miRNA interactome of osteoarthritis cartilage

Coutinho de Almeida, Rodrigo (author), Ramos, Yolande F.M. (author), Mahfouz, A.M.E.T.A. (author), den Hollander, Wouter (author), Lakenberg, Nico (author), Houtman, Evelyn (author), van Hoolwerff, Marcella (author), Suchiman, H. Eka D. (author), Rodriguez-Ruiz, Alejandro (author), Slagboom, P. Eline (author), Mei, Hailiang (author), Kielbasa, Szymon M. (author), Nelissen, R.G.H.H. (author), Reinders, M.J.T. (author), Meulenbelt, Ingrid (author)

Objective To uncover the microRNA (miRNA) interactome of the osteoarthritis (OA) pathophysiological process in the cartilage.<br/>Methods We performed RNA sequencing in 130 samples (n=35 and n=30 pairs for messenger RNA (mRNA) and miRNA, respectively) on macroscopically preserved and lesioned OA cartilage from the same patient and performed...

journal article 2018

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Assessment of operation reserves in hydrothermal electric systems with high wind generation

Ramos, Andres (author), Rivier, Michel (author), Garcia-Gonzalez, Javier (author), Latorre, J. M. (author), Morales-Espana, G. (author)

In this paper, we propose a method to analyze the amount of operation reserves procured in a system based on two stages. The first stage is a detailed hourly unit commitment and the second stage is a simulation model with a shorter time period. The method is applied to the Spanish hydrothermal system and several cases are analyzed to determine...

conference paper 2016

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Exposure to Air Pollutants During Physical Activity

Ramos, C.A. (author)

The context for this thesis is the concern that people who practice physical activity are more susceptible to air pollution. For the studies presented here, three perspectives of physical activity were considered: in indoor, i) physical activity in fitness centers; in outdoor ii) the use of bicycle in cycle paths; and iii) active transportation....

doctoral thesis 2016

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Lattice Modelling of the Onset of Concrete-Ice Abrasion

Ramos, N. (author), Shamsutdinova, G. (author), Hendriks, M.A.N. (author), Jacobsen, S. (author)

conference paper 2016

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Underlying molecular mechanisms of DIO2 susceptibility in symptomatic osteoarthritis

Bomer, N. (author), Den Hollander, W.T.H.F. (author), Ramos, Y.F.M. (author), Bos, S.D. (author), Van der Breggen, R. (author), Lakenberg, N. (author), Pepers, B.A. (author), Van Eeden, A.E. (author), Darvishan, A. (author), Tobi, E.W. (author), Duijnisveld, B.J. (author), Van den Akker, E.B. (author), Heijmans, B.T. (author), Van Roon-Mom, W.M.C. (author), Verbeek, F.J. (author), Osch, G.J.V.M. (author), Nelissen, R.G.H.H. (author), Slagboom, P.E. (author), Meulenbelt, I. (author)

Objectives: To investigate how the genetic susceptibility gene DIO2 confers risk to osteoarthritis (OA) onset in humans and to explore whether counteracting the deleterious effect could contribute to novel therapeutic approaches. Methods: Epigenetically regulated expression of DIO2 was explored by assessing methylation of positional CpG...

journal article 2015

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Power-Capacity and Ramp-Capability Reserves for Wind Integration in Power-Based UC

Morales-Espana, G. (author), Baldick, Ross (author), García-González, Javier (author), Ramos, Andres (author)

This paper proposes a power-based network-constrained unit commitment (UC) model as an alternative to the traditional deterministic UCs to deal with wind generation uncertainty. The formulation draws a clear distinction between power-capacity and ramp-capability reserves to deal with wind production uncertainty. These power and ramp requirements...

journal article 2015

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Chromosomal Copy Number Variation in Saccharomyces pastorianus Is Evidence for Extensive Genome Dynamics in Industrial Lager Brewing Strains

Van den Broek, M. (author), Bolat, I. (author), Nijkamp, J.F. (author), Ramos, E. (author), Luttik, M.A.H. (author), Koopman, F. (author), Geertman, J.M. (author), De Ridder, D. (author), Pronk, J.T. (author), Daran, J.M. (author)

Lager brewing strains of Saccharomyces pastorianus are natural interspecific hybrids originating from the spontaneous hybridization of Saccharomyces cerevisiae and Saccharomyces eubayanus. Over the past 500 years, S. pastorianus has been domesticated to become one of the most important industrial microorganisms. Production of lager-type beers...

journal article 2015

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Tight MIP formulations of the power-based unit commitment problem

Morales-Espana, G.A. (author), Gentile, C. (author), Ramos, A. (author)

This paper provides the convex hull description for the basic operation of slow- and quick-start units in power-based unit commitment (UC) problems. The basic operating constraints that are modeled for both types of units are (1) generation limits and (2) minimum up and down times. Apart from this, the startup and shutdown processes are also...

journal article 2015