2022
Autores
Abuter, R; Allouche, F; Amorim, A; Bailet, C; Baubock, M; Berger, JP; Berio, P; Bigioli, A; Boebion, O; Bolzer, ML; Bonnet, H; Bourdarot, G; Bourget, P; Brandner, W; Clenet, Y; Courtney Barrer, B; Dallilar, Y; Davies, R; Defrere, D; Delboulbe, A; Delplancke, F; Dembet, R; de Zeeuw, PT; Drescher, A; Eckart, A; Edouard, C; Eisenhauer, F; Fabricius, M; Feuchtgruber, H; Finger, G; Schreiber, NMF; Garcia, E; Garcia, P; Gao, F; Gendron, E; Genzel, R; Gil, JP; Gillessen, S; Gomes, T; Gonte, F; Gouvret, C; Guajardo, P; Guieu, S; Hartl, M; Haubois, X; Haussmann, F; Heissel, G; Henning, T; Hippler, S; Honig, S; Horrobin, M; Hubin, N; Jacqmart, E; Jochum, L; Jocou, L; Kaufer, A; Kervella, P; Korhonen, H; Kreidberg, L; Lacour, S; Lagarde, S; Lai, O; Lapeyrere, V; Laugier, R; Le Bouquin, JB; Leftley, J; Lena, P; Lutz, D; Mang, F; Marcotto, A; Maurel, D; Merand, A; Millour, F; More, N; Nowacki, H; Nowak, M; Oberti, S; Ott, T; Pallanca, L; Paumard, T; Perraut, K; Perrin, G; Petrov, R; Pfuhl, O; Pourre, N; Rabien, S; Rau, C; Robbe Dubois, S; Rochat, S; Salman, M; Scholler, M; Schubert, J; Schuhler, N; Shangguan, J; Shimizu, T; Scheithauer, S; Sevin, A; Soulez, F; Spang, A; Stadler, E; Stadler, J; Straubmeier, C; Sturm, E; Tacconi, LJ; Tristram, KRW; Vincent, F; von Fellenberg, S; Uysal, S; Widmann, F; Wieprecht, E; Wiezorrek, E; Woillez, J; Yazici, S; Young, A; Zins, G;
Publicação
ASTRONOMY & ASTROPHYSICS
Abstract
GRAVITY+ is the upgrade for GRAVITY and the Very Large Telescope Interferometer (VLTI) with wide-separation fringe tracking, new adaptive optics, and laser guide stars on all four 8 m Unit Telescopes (UTs) to enable ever-fainter, all-sky, high-contrast, milliarcsecond interferometry. Here we present the design and first results of the first phase of GRAVITY+, known as GRAVITY Wide. GRAVITY Wide combines the dual-beam capabilities of the VLTI and the GRAVITY instrument to increase the maximum separation between the science target and the reference star from 2 arcseconds with the 8 m UTs up to several 10 arcseconds, limited only by the Earth's turbulent atmosphere. This increases the sky-coverage of GRAVITY by two orders of magnitude, opening up milliarcsecond resolution observations of faint objects and, in particular, the extragalactic sky. The first observations in 2019-2022 include the first infrared interferometry of two redshift z similar to 2 quasars, interferometric imaging of the binary system HD 105913A, and repeat observations of multiple star systems in the Orion Trapezium Cluster. We find the coherence loss between the science object and fringe-tracking reference star well described by the turbulence of the Earth's atmosphere. We confirm that the larger apertures of the UTs result in higher visibilities for a given separation due to the broader overlap of the projected pupils on the sky and provide predictions for visibility loss as a function of separation to be used for future planning.
2022
Autores
Zhang, Y; Chen, F; Fonseca, NA; He, Y; Fujita, M; Nakagawa, H; Zhang, Z; Brazma, A; Amin, SB; Awadalla, P; Bailey, PJ; Brazma, A; Brooks, AN; Calabrese, C; Chateigner, A; Cortés-Ciriano, I; Craft, B; Craft, D; Creighton, CJ; Davidson, NR; Demircioglu, D; Erkek, S; Fonseca, NA; Frenkel-Morgenstern, M; Goldman, MJ; Greger, L; Göke, J; He, Y; Hoadley, KA; Hou, Y; Huska, MR; Kahles, A; Khurana, E; Kilpinen, H; Korbel, JO; Lamaze, FC; Lehmann, K; Li, C; Li, S; Li, X; Li, X; Liu, D; Liu, F; Liu, X; Marin, MG; Markowski, J; Meyerson, M; Nandi, T; Nielsen, MM; Ojesina, AI; Ouellette, BFF; Pan-Hammarström, Q; Park, PJ; Pedamallu, CS; Pedersen, JS; Perry, MD; Rätsch, G; Schwarz, RF; Shiraishi, Y; Siebert, R; Soulette, CM; Stark, SG; Stegle, O; Su, H; Tan, P; Teh, BT; Urban, L; Wang, J; Waszak, SM; Wu, K; Xiang, Q; Xiong, H; Yakneen, S; Yang, H; Ye, C; Yung, CK; Zhang, F; Zhang, J; Zhang, X; Zhang, Z; Zheng, L; Zhu, J; Zhu, S; Akdemir, KC; Alvarez, EG; Baez-Ortega, A; Beroukhim, R; Boutros, PC; Bowtell, DDL; Brors, B; Burns, KH; Campbell, PJ; Chan, K; Chen, K; Cortés-Ciriano, I; Dueso-Barroso, A; Dunford, AJ; Edwards, PA; Estivill, X; Etemadmoghadam, D; Feuerbach, L; Fink, JL; Frenkel-Morgenstern, M; Garsed, DW; Gerstein, M; Gordenin, DA; Haan, D; Haber, JE; Hess, JM; Hutter, B; Imielinski, M; Jones, DTW; Ju, YS; Kazanov, MD; Klimczak, LJ; Koh, Y; Korbel, JO; Kumar, K; Lee, EA; Lee, JJ; Li, Y; Lynch, AG; Macintyre, G; Markowetz, F; Martincorena, I; Martinez-Fundichely, A; Meyerson, M; Miyano, S; Nakagawa, H; Navarro, FCP; Ossowski, S; Park, PJ; Pearson, JV; Puiggròs, M; Rippe, K; Roberts, ND; Roberts, SA; Rodriguez-Martin, B; Schumacher, SE; Scully, R; Shackleton, M; Sidiropoulos, N; Sieverling, L; Stewart, C; Torrents, D; Tubio, JMC; Villasante, I; Waddell, N; Wala, JA; Weischenfeldt, J; Yang, L; Yao, X; Yoon, S; Zamora, J; Zhang, C; Creighton, CJ; Aaltonen, LA; Abascal, F; Abeshouse, A; Aburatani, H; Adams, DJ; Agrawal, N; Ahn, KS; Ahn, S; Aikata, H; Akbani, R; Akdemir, KC; Al-Ahmadie, H; 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Publicação
Nature Communications
Abstract
In the published version of this paper, the members of the Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortiumwere listed in the Supplementary Information; however, these members shouldhave been included in themainpaper.The originalArticle has been corrected to include the members and affiliations of the PCAWG Consortium in the main paper; the corrections have been made to the HTML version of the Article but not the PDF version. In the PCAWG Transcriptome Working Group, the affiliation ‘BioForA, French National Institute for Agriculture, Food, and Environment (INRAE),ONF,Orléans, France’ for Aurélien Chateignerwas alsomissing. The original Article has been corrected. Additional corrections to affiliations have been made to the PDF and HTML versions of the original Article for consistency of information between the PCAWG list and the main paper. © The Author(s) 2022.
2022
Autores
Cunha, CR; Lopes, L; Mendonca, V;
Publicação
MARKETING AND SMART TECHNOLOGIES, VOL 1
Abstract
The tourism sector has gained increasing importance in the economy of many regions, or even countries, however, the way in which organizations and territories communicate and promote each other, to attract tourists, significantly impacts the success of the sector, and digital marketing strategies have stood out as promising. Thus, in a digital society, in which information and communication technologies are present in the daily life of the general population, especially mobile technologies, it is essential that the tourism sector seeks innovative and differentiating marketing and communication strategies. When considering the technological advances, which have been asserted lately, wireless communication networks with high bandwidth, processing capacity of mobile technologies, Internet of Things, Big Data, Virtual and Augmented Reality, Empowered Smart Cities with different technology; it can be said that the conditions are in place so that new paradigms and marketing strategies can emerge. These technologies allow to communicate with the target audience in a more impactful way and stimulating different senses, that is, immersive. It is in this context that the opportunity and motivation for the development of this research work arises. In this sense, this work highlights the technologies that we consider most relevant, combining them in a conceptual model that is proposed and that we consider enhancing an immersive and innovative digital marketing strategy, for the promotion of touristic destinations.
2022
Autores
Carrillo, JV; Sierra, A; Leal, JP; Queirós, R; Pellicer, S; Primo, M;
Publicação
ICPEC
Abstract
Computer science is a skill that will continue to be in high demand in the foreseeable future. Despite this trend, automated assessment in computer science is often hampered by the lack of systems supporting a wide range of topics. While there is a number of open software systems and programming exercise collections supporting automated assessment, up to this date, there are few systems that offer a diversity of exercises ranging from computer programming exercises to markup and databases languages. At the same time, most of the best-of-breed solutions force teachers and students to alternate between the Learning Management System - a pivotal piece of the e-learning ecosystem - and the tool providing the exercises. This issue is addressed by JuezLTI, an international project whose goal is to create an innovative tool to allow the automatic assessment of exercises in a wide range of computer science topics. These topics include different languages used in computer science for programming, markup, and database management. JuezLTI borrows part of its name from the IMS Learning Tools Interoperability (IMS LTI) standard. With this standard, the tool will interoperate with reference systems such as Moodle, Sakai, Canvas, or Blackboard, among many others. Another contribution of JuezLTI will be a pool of exercises. Interoperability and content are expected to foster the adoption of JuezLTI by many institutions. This paper presents the JuezLTI project, its architecture, and its main components.
2022
Autores
Quijano, DA; Padilha Feltrin, A; Catalao, JPS;
Publicação
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
Abstract
Electric spring (ES) is a novel smart grid technology developed to facilitate the integration of renewable generation by controlling the demand of non-critical loads (NCLs). The utilization of ES to provide a single service such as voltage or frequency regulation, validated in a setup consisting of a single ES, has been extensively investigated. However, to take full advantage of this technology, it is necessary to develop control strategies to coordinate the operation of multiple distributed ESs to provide multiple services in power systems. To this end, this paper presents a rolling-optimization control strategy to coordinate the operation of multiple ESs for voltage regulation, congestion management and cost minimization of the real-time deviations from the scheduled energy exchanges with the grid in microgrids with renewable generation. The strategy is for centralized implementation, and includes a probabilistic optimal power flow-based optimization engine that finds the voltage references of ESs for each control interval taking into account generation variability and uncertainties. NCLs consist of electric water heaters, which are modeled taking into account physical constraints and the hot water demand. Simulations were carried out in two test systems with 14 and 33 buses.
2022
Autores
Silva, P; Oliveira, JN; Macedo, N; Cunha, A;
Publicação
PROCEEDINGS OF THE 30TH ACM JOINT MEETING EUROPEAN SOFTWARE ENGINEERING CONFERENCE AND SYMPOSIUM ON THE FOUNDATIONS OF SOFTWARE ENGINEERING, ESEC/FSE 2022
Abstract
Alloy is a popular language and tool for formal software design. A key factor to this popularity is its relational logic, an elegant specification language with a minimal syntax and semantics. However, many software problems nowadays involve both structural and quantitative requirements, and Alloy's relational logic is not well suited to reason about the latter. This paper introduces QAlloy, an extension of Alloy with quantitative relations that add integer quantities to associations between domain elements. Having integers internalised in relations, instead of being explicit domain elements like in standard Alloy, allows quantitative requirements to be specified in QAlloy with a similar elegance to structural requirements, with the side-effect of providing basic dimensional analysis support via the type system. The QAlloy Analyzer also implements an SMT-based engine that enables quantities to be unbounded, thus avoiding many problems that may arise with the current bounded integer semantics of Alloy.
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