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Marc Melgosa is defending his thesis on air traffic flow and capacity management
Marc Melgosa defended his thesis co-supervised by Dr. Xavier Prats and Dr. Andrija Vidosavljevic on March 22, 2023 at the Baix Llobregat Campus. Entitled "Enhanced Air Traffic Flow and Capacity Management under Trajectory Based Operations considering traffic Complexity", the thesis presents a new operational concept that integrates demand and capacity management in the same optimization problem, uses complexity metrics (in instead of the number of arrivals) to measure traffic and takes into account airspace user preferences allowing the possibility of using alternative trajectories to avoid airspace congestion
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Discovery of a neutron star that behaves like a black hole
An international scientific team, in which Yuri Cavecchi, from the physics department of the UPC has participated, and led by the Instituto de Astrofísica de Canarias (IAC), has found a neutron star that steals matter from a companion star in a violent and unstable. This process, previously only observed in black holes. The study is published in the journal Nature.
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Are dislocations in solid helium “supersolid”?
A team of researchers from the Universitat Politècnica de Catalunya (Spain), Universidade Estadual de Campinas (Brazil) and Stanford University (USA) performed advanced quantum atomistic simulations to assess the Bose-Einstein condensate fraction of solid helium at zero temperature containing dislocations, a defective system that previously had been proposed to be “supersolid”
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Created a method to prevent and detect forest desertification
Giulio Tirabassi and Cristina Masoller have created an algorithm based on the analysis of satellite data provided by NASA's MODIS instrument that allows preventing the definitive destruction of natural environments
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Unmasking the microscopic fingerprint in finite-temperature features of a one-dimensional Bose gas
A team of researchers from UPC in Barcelona and EPFL in Lausanne built a new theory to explain the finite-temperature properties in terms of microscopic excitations of bosons in one dimension
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Participation of the Physics department in research using the WEAVE spectrograph on the evolution of galaxies
A few hundred astronomy professionals have designed and planned a total of five years of operations for the WEAVE spectrograph, a powerful instrument recently installed at the Canary Islands Observatory.
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A new experimental and numerical investigation on the fatigue response of composite and metal aircraft structures
The researchers Siddharth Pitta, Jose I. Rojas, Francesc Roure, Daniel Crespo, and Magd Abdel Wahab, from the Group of Materials Characterization of the UPC, the Materials Strength Laboratory of the UPC, and the Ghent University, have made new progresses in the characterization of the fatigue response of aircraft repair patches made of carbon fiber reinforced epoxy (CFRE) and aluminum alloy on aircraft airframe substrates made as well of CFRE and aluminum alloy
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The new research on intrinsic correlation between the fraction of liquid-like zones and the beta-relaxation in high-entropy metallic glasses
Researchers Y. J. Duan, E. Pineda and D. Crespo, from the Group of Materials Characterization of the UPC, have made new progress to understand the mechanical properties of high-entropy metallic glasses. The work clarifies the correlation between the fraction of liquid-like zones, i.e. the fraction of atoms that can easily rearrange under the effect of external forces, and the secondary or β relaxation observed in these materials. Besides, the work reveals the high-entropy effect on the supercooled liquid dynamics of the metallic melt.
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Nikolai Kvashin defends his thesis on the slip transfer phenomenon in BCC metals
Nikolai Kvashin defended his thesis co-directed by Napoleón Anento and Dmitry Terentyev on 16th of November 2022 at Campus Nord. Titled “Atomistic Study of Slip Transfer in BCC Metals “, the thesis presents an atomistic computer simulation study on the interaction between dislocations (single and pile-up cases) and a set of grain boundaries with the purpose to investigate the role played by the grain boundary atomic structure
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Xiao Liu defends his thesis on high-precision instantaneous GNSS positioning
Xiao Liu defended his thesis co-supervised by Jaume Sanz Subirana and Adria Rovira Garcia on November 10th 2022 at Campus Nord. Entitled "Contributions to High Accuracy Snapshot GNSS Positioning", the thesis presents a novel method for high accuracy GNSS positioning using only a very short interval of the GNSS satellite signal.
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