cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
D4.3 Report on the costs and benefits of Citizen Social Science: Analysis based on the YouCount project
Creators: name: Franco, Susana
name: Lorenz, Usue
name: Norvoll, Reidun
Publisher: name: Zenodo
Year: 2024
Subjects: European Union
Horizon 2020
YouCount project
Citizen Science
Youth Citizen Social Science
costs and benefits
impact
outcomes

description: This deliverable is part of the Horizon 2020 SwafS project YouCount.

The aim of this deliverable is to contribute to the evolving understanding of the costs and benefits associated with Citizen Science in general and Youth Citizen Social Science in particular through a critical analysis of the YouCount project findings. This critical examination is grounded in a comprehensive multi-assessment framework that collects evidence of the scientific, social, democratic, economic and individual dimensions of YouCount.

The framework is based on the review of the literature, that is presented in section 2 of this deliverable, but it also incorporates some of the insights developed while conducting the project, which helped to refine the categories that are included under each dimension. Section 3 describes the methodological approach based on the multicriteria framework. The analysis is based on secondary data, using previous deliverables of the project that have, in turn, collected and analysed primary data (both quantitative and qualitative) from the project, that were reviewed to extract information that identifies the costs and benefits (or pros and cons) reflected on the multicriteria framework. The actual analysis is presented in Section 4, including the main costs and benefits that have been extracted about new topic related knowledge, science quality, enhanced science-society communication and increased open data and open science contributions in the scientific dimension; outreach to disadvantaged groups, more competencies among locals and citizens, increased interest and public engagement in science and new/better policies for social inclusion in the societal dimension; increased inclusiveness in science and increased participation of youth in policy-making and community development in the democratic dimension; financial costs and potential economic implications of successful policy and interventions in the economic dimension; and knowledge and skills development, employability, civic engagement, empowerment and social capital in the individual dimension.

Finally, section 4 concludes with a discussion that summarises the main arguments around the intertwined costs and benefits of youth citizen social sciences, underscoring the importance of strategic resource allocation, optimization of co-creative CSS approaches, and a thoughtful balance between scientific rigor and communication activities in order to deliver valuable scientific outcomes and fostering youth engagement in science, policymaking, and social innovation.
title: Turbidity current sediment modeling in a rift basin
Creators: name:  Brandao ,  Aglaia
name:  De Ros ,  Luis F.
name:  Octavian ,  Catuneanu
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2021

description: Turbidites are the main reservoir rocks in many sedimentary basins. Through well log profiles and using stratigraphy of high-resolution sequences, 6 stratigraphic surfaces of 3 and 4 order were interpreted. These surfaces were defined trough facies association (cores) and petrofacies (thin sections). Each surface has an electrical signature and a seismic amplitude. Correlating wells and mapping the seismic lines, the 2D and 3D stratigraphic surfaces are then obtained. With Schlumberger's Petrel a seismic and stratigraphic verification points were defined. Then the 3D structural model was built by the faults and zones of the top and bottom layers. For this area, a Grid with 50X50m cell size (horizontal limit) was defined. Following this, the pillar gridding and the layering are generated. For facies modeling, a facies profile was obtained in the stratigraphic sections trough the correlation between logs and rock. A good log and seismic signature can separate the reservoirs (sandstones), from the source rock (shale) and carbonates. Histograms are necessary to define the accuracy and representativeness of the model, defining the vertical modeling limit. To complete the model, it is necessary after the study with histograms, the scale up of the model and if necessary, insert a trend (a paleocurrent for example). The most representative interpolation method for this model was SIS Modeling (Sequential Indicator Simulation). The result was considered satisfactory and correlated with the profiles of existing wells, indicating a methodology to be used constantly by the industry. This serves the O&G sector, geothermal energy and groundwater exploration.
Top Quark Physics at the Tevatron
Creators: name: Déliot, Frédéric
name: Peters, Yvonne
name: Sorin, Veronica
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The heaviest known elementary particle, the top quark, was discovered in 1995 by the CDF and D0 collaborations at the Tevatron proton-antiproton collider at Fermilab. Since its discovery, a large program was set in motion by the CDF and D0 collaborations to characterize the production and decay properties of top quarks, and investigate their potential for searches of new phenomena beyond the standard model. During the past 20 years, new methods were developed and implemented to improve the measurements and searches for new physics in the top-quark sector. This article reviews the achievements and results obtained through studies of the top quark at the Tevatron.
description: 27 pages, review submitted to Int. J. Mod. Phys. A
title: Επεξεργασία και ερμηνεία θαλάσσιων σεισμικών καταγραφών ανάκλασης στην περιοχή του Ιονίου
Creators: name: Κόκκινου Ελένη Ε.
Publisher: name: Technical University of Crete
Year: 2002

description: Μη διαθέσιμο
Torsion pendulum revisited
Creators: name: Bassan, Massimo
name: De Marchi, Fabrizio
name: Marconi, Lorenzo
name: Pucacco, Giuseppe
name: Stanga, Ruggero
name: Visco, Massimo
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an analysis of the motion of a simple torsion pendulum and we describe how, with straightforward extensions to the usual basic dynamical model, we succeed in explaining some unexpected features we found in our data, like the modulation of the torsion mode at a higher frequency and the frequency splitting of the swinging motion. Comparison with observed values yields estimates for the misalignment angles and other parameters of the model.
description: 17 pages, 4 figures
Additional file 3 of Epidural lidocaine, butorphanol, and butorphanol – lidocaine combination in dromedary camels
Creators: name: Nahas, Ayman El
name: Almubarak, Adel Ibrahim
name: Hagag, Usama
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 3: Supplementary Table 3. Mean values ± SD of biochemical variables pre- and post-epidural administration of lidocaine hydrochloride 2% (0.22 mg kg-1), butorphanol tartarate 1% (0.04 mg kg-1) and butorphanol- lidocaine (0.04 mg kg-1-0.22 mg kg-1) in nine dromedary camels.
Tätigkeitsbericht des Römisch-Germanischen Zentralmuseums für das Rechnungsjahr 1969
Creators: name: Böhner, Kurt
Publisher: name: Verlag des Römisch-Germanischen Zentralmuseums Mainz
Year: 2017
Subjects: Tätigkeitsbericht

description: [nicht vorhanden / not available]
description: Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz, Bd. 16 (1969)
title: Data-driven analysis of operational innovations in healthcare delivery
Creators: name: Sonmez, Nazli
Publisher: name: London Business School
Year: 2021

description: Operational innovations significantly impact the effectiveness of healthcare delivery. In this thesis, I take a data-driven approach to advance rigorous evidence on shared medical appointments (SMAs), which are an innovative and interactive alternative to traditional one-on-one appointments for routine care of chronic diseases. Under this innovative approach, a group of five to fifteen patients with similar chronic conditions { such as asthma, diabetes, glaucoma, etc. { meet with a doctor simultaneously. Each patient, in turn, receives full one-on-one attention including diagnosis and prescription, while the others listen. In contrast to one-on-one appointments, SMAs compromise privacy, while enabling peer interactions. The first essay focuses on empirical analysis of the effectiveness of SMAs as an alternative to traditional one-on-one appointments for glaucoma patients, through a randomized controlled trial. The trial was conducted with 1,000 patients over four consecutive medical appointments, at the Aravind Eye Hospital, in Pondicherry, India. Using causal inference methods, it is found that SMAs can significantly improve patient satisfaction, knowledge, and medication compliance rates, with no significant differences in follow-up rates or disease progression. The second essay focuses on whether the diminished privacy in SMAs might hinder patient engagement, undermining the quality of care. Despite accumulating evidence of their effectiveness, many patients and doctors remain wary of SMAs. There is concern that diminished privacy in SMAs may prevent information sharing related to sensitive medical issues, thus reducing patient engagement, and compromising long-run outcomes. Therefore, it is an empirical question whether the diminished privacy in SMAs might hinder patient engagement, undermining the quality of care. This question is addressed in the second essay, through analysing engagement data collected during the same randomized controlled trial. The empirical approach developed to analyse shared appointment interactions and one-on-one appointment interactions was based on videotaping and coding patient behaviours for every appointment in the trial (20,000 minutes of video). The results suggest that despite the relative lack of confidentiality, patients in SMAs exhibit higher levels of both verbal engagement (asked more questions, participated more in conversation) and non-verbal engagement (attentiveness, positivity, head wobbling, eye contact and end of appointment happiness) during their appointments. The thesis is concluded with a discussion of some learnings from conducting field research and some future research directions related to the two essays.
Amor, honor y poder
Creators: name: Russo, Antonella
Publisher: name: Zenodo
Year: 2021
Subjects: Calderón
Amor, honor y poder
Métrica dramática
Segmentación dramática
Bibliografía

description: Calderón Digital: base de datos, argumentos y motivos del teatro de Calderón (dir. Fausta Antonucci). Ficha dedicada a Amor, honor y poder, con datos bibliográficos primarios y secundarios, fecha probable de composición, cómputo de las formas métricas, análisis de las coordenadas espacio-temporales, adscripción genérica y sinopsis argumental detallada, con indicación de los principales motivos (diegéticos y simbólicos) y propuesta de segmentación articulada según los cambios de forma métrica, de espacio y tiempo dramáticos.
Finding Competence Regions in Domain Generalization
Creators: name: Müller, Jens
name: Radev, Stefan T.
name: Schmier, Robert
name: Draxler, Felix
name: Rother, Carsten
name: Köthe, Ullrich
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We investigate a "learning to reject" framework to address the problem of silent failures in Domain Generalization (DG), where the test distribution differs from the training distribution. Assuming a mild distribution shift, we wish to accept out-of-distribution (OOD) data from a new domain whenever a model's estimated competence foresees trustworthy responses, instead of rejecting OOD data outright. Trustworthiness is then predicted via a proxy incompetence score that is tightly linked to the performance of a classifier. We present a comprehensive experimental evaluation of existing proxy scores as incompetence scores for classification and highlight the resulting trade-offs between rejection rate and accuracy gain. For comparability with prior work, we focus on standard DG benchmarks and consider the effect of measuring incompetence via different learned representations in a closed versus an open world setting. Our results suggest that increasing incompetence scores are indeed predictive of reduced accuracy, leading to significant improvements of the average accuracy below a suitable incompetence threshold. However, the scores are not yet good enough to allow for a favorable accuracy/rejection trade-off in all tested domains. Surprisingly, our results also indicate that classifiers optimized for DG robustness do not outperform a naive Empirical Risk Minimization (ERM) baseline in the competence region, that is, where test samples elicit low incompetence scores.
description: The paper has been published at TMLR (see https://openreview.net/forum?id=TSy0vuwQFN)
„Eine andere Medea". Über Christa Wolfs Roman Medea. Stimmen
Creators: name: Lu, Mingjun
Publisher: name: Literaturstraße. Chinesisch-deutsche Zeitschrift für Sprach- und Literaturwissenschaft
Year: 2017

description: -
description: Literaturstraße. Chinesisch-deutsche Zeitschrift für Sprach- und Literaturwissenschaft, Bd. 13 (2012)
Additional file 1 of Sex differences in distribution and identity of aromatase gene expressing cells in the young adult rat brain
Creators: name: Immenschuh, Jana
name: Thalhammer, Stefan Bernhard
name: Sundström-Poromaa, Inger
name: Biegon, Anat
name: Dumas, Sylvie
name: Comasco, Erika
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 1: Table S1. Riboprobes used for FISH experiments. Table S2. Results of the co-expression experiments with additional markers.
Four Images: Madame Otthennin de &c, Madlle Otthennin de St. Julien"; Thomas Woolner (1864), and possibly Browning jun.
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Sculptors

description: Four images: "Madme Otthennin de &c"; "Madlle Otthennin de St. Julien"; "T. Woolner (1864)"; and "Paris, October 1862" "(Browning jun?)"
Additional file 1 of IGF-1R targeting in cancer – does sub-cellular localization matter?
Creators: name: Soni, Upendra K.
name: Jenny, Liam
name: Hegde, Rashmi S.
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Mental Health
subject: Virology

description: Supplementary Material 1
Many-body non-equilibrium effects in all-electric electron spin resonance
Creators: name: Reina-Gálvez, Jose
name: Wolf, Christoph
name: Lorente, Nicolás
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Motivated by recent developments in measurements of electron spin resonances of individual atoms and molecules with the scanning tunneling microscope (ESR-STM), we study electron transport through an impurity under periodic driving as a function of the transport parameters in a model junction. The model consists of a single-orbital quantum impurity connected to two electrodes via time-dependent hopping terms. The hopping terms are treated at the lowest order in perturbation theory to recover a Lindblad-like quantum master equation with electron transport. As in the experiment, the ESR-STM signal is given by the variation of the long-time DC current with the driving frequency. The density-matrix coherences play an important role in the evaluation of the ESR-STM signal. Electron correlation is included in our impurity mode. The charging energy $U$ has significant influence on the spin dynamics depending on the sign and magnitude of the applied DC bias. Our model allows direct insight into the origin of the ESR signal from the many-body dynamics of the impurity.
Line positions and intensities of the $ν_1$ band of $^{12}$CH$_3$I using mid-infrared optical frequency comb Fourier transform spectroscopy
Creators: name: Hjältén, Adrian
name: Foltynowicz, Aleksandra
name: Sadiek, Ibrahim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a new spectral analysis of the $ν_1$ and $ν_3$+$ν_1$-$ν_3$ bands of $^{12}$CH$_3$I around 2971 cm$^{-1}$ based on a high-resolution spectrum spanning from 2800 cm$^{-1}$ to 3160 cm$^{-1}$, measured using an optical frequency comb Fourier transform spectrometer. From this spectrum, we previously assigned the $ν_4$ and $ν_3$+$ν_4$-$ν_3$ bands around 3060 cm$^{-1}$ using PGOPHER, and the line list was incorporated in the HITRAN database. Here, we treat the two fundamental bands, $ν_1$ and $ν_4$, together with the perturbing states, 2$ν_2$+$ν_3$ and $ν_2$+2$ν_6$$^{\pm2}$, as a four-level system connected via Coriolis and Fermi interactions. A similar four-level system is assumed to connect the $ν_3$+$ν_1$-$ν_3$ and $ν_3$+$ν_4$-$ν_3$ hot bands, which appear due to the population of the low-lying $ν_3$ state at room temperature, with the 2$ν_2$+2$ν_3$ and $ν_2$+$ν_3$-$ν_6$$^{\pm2}$ perturbing states. This treatment provides a good global agreement of the simulated spectra with experiment, and hence accurate line lists and band parameters of the four connected vibrational states in each system. Overall, we assign 4665 transitions in the fundamental band system, with an average error of 0.00071 cm$^{-1}$, a factor of two better than earlier work on the $ν_1$ band using conventional Fourier transform infrared spectroscopy. The $ν_1$ band shows hyperfine splitting, resolvable for transitions with J $\le$ 2 x K. Finally, the spectral intensities of 65 lines of the $ν_1$ band and 7 lines of the $ν_3$+$ν_1$-$ν_3$ band are reported for the first time using the Voigt line shape as a model in multispectral fitting.
Additional file 2 of IGF-1R targeting in cancer – does sub-cellular localization matter?
Creators: name: Soni, Upendra K.
name: Jenny, Liam
name: Hegde, Rashmi S.
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Mental Health
subject: Virology

description: Supplementary Material 2
title: Σχεδιασμός εξελιγμένων πινακών ελέγχου στη βιομηχανία με βάση το ισοζύγιο ενέργειας και μάζας
Creators: name: Κορδάτος Νικόλαος Κ.
Publisher: name: Technical University of Crete
Year: 2000

description: Μη διαθέσιμο
Hint of a transiting extended atmosphere on 55 Cancri b
Creators: name: Ehrenreich, David
name: Bourrier, Vincent
name: Bonfils, Xavier
name: Etangs, Alain Lecavelier des
name: Hébrard, Guillaume
name: Sing, David K.
name: Wheatley, Peter J.
name: Vidal-Madjar, Alfred
name: Delfosse, Xavier
name: Udry, Stéphane
name: Forveille, Thierry
name: Moutou, Claire
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The naked-eye star 55 Cancri hosts a planetary system with five known planets, including a hot super-Earth (55 Cnc e) extremely close to its star and a farther out giant planet (55 Cnc b), found in milder irradiation conditions with respect to other known hot Jupiters. This system raises important questions on the evolution of atmospheres for close-in exoplanets, and the dependence with planetary mass and irradiation. These questions can be addressed by Lyman-alpha transit observations of the extended hydrogen planetary atmospheres, complemented by contemporaneous measurements of the stellar X-ray flux. In fact, planet `e' has been detected in transit, suggesting the system is seen nearly edge-on. Yet, planet `b' has not been observed in transit so far. Here, we report on Hubble Space Telescope STIS Lyman-alpha and Chandra ACIS-S X-ray observations of 55 Cnc. These simultaneous observations cover two transits of 55 Cnc e and two inferior conjunctions of 55 Cnc b. They reveal the star as a bright Lyman-alpha target and a variable X-ray source. While no significant signal is detected during the transits of 55 Cnc e, we detect a surprising Lyman-alpha absorption of 7.5 +/- 1.8% (4.2 sigma) at inferior conjunctions of 55 Cnc b. The absorption is only detected over the range of Doppler velocities where the stellar radiation repels hydrogen atoms towards the observer. We calculate a false-alarm probability of 4.4%, which takes into account the a-priori unknown transit parameters. This result suggests the possibility that 55 Cnc b has an extended upper H I atmosphere, which undergoes partial transits when the planet grazes the stellar disc. If confirmed, it would show that planets cooler than hot Jupiters can also have extended atmospheres.
description: 8 pages, 10 figures, accepted for publication in A&A
Additional file 1 of Metallothionein expression in feline injection site fibrosarcomas
Creators: name: Mikiewicz, Mateusz
name: Paździor-Czapula, Katarzyna
name: Fiedorowicz, Joanna
name: Gesek, Michał
name: Otrocka-Domagała, Iwona
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: Cancer
subject: Science Policy

description: Additional file 1: Supplementary Table 1. Detailed characteristics of evaluated feline injection site fibrosarcomas.
Stellar Structure Equations in Extended Palatini Gravity
Creators: name: Olmo, Gonzalo J.
name: Sanchis-Alepuz, Helios
name: Tripathi, Swapnil
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider static spherically symmetric stellar configurations in Palatini theories of gravity in which the Lagrangian is an unspecified function of the form $f(R,R_{μν}R^{μν})$. We obtain the Tolman-Oppenheimer-Volkov equations corresponding to this class of theories and show that they recover those of $f(R)$ theories and General Relativity in the appropriate limits. We show that the exterior vacuum solutions are of Schwarzschild-de Sitter type and comment on the possible expected modifications, as compared to GR, of the interior solutions.
description: 13 pages, no figures
title: Πειραματική μελέτη και προσομοίωση με πεπερασμένα στοιχεία της δημιουργίας απόληξης (burr) στις κατεργασίες με αφαίρεση υλικού
title: Experimental investigation and finite element simulation of burr formation in metal cutting processes
Creators: name: Ευσταθιου Χαρικλεια
Publisher: name: Technical University of Crete
Year: 2015

description: Προσομοίωση του φαινομένου σχηματισμού απόληξης κατεργασίας με πεπερασμένα στοιχεία και επιβεβαίωση του μοντέλου προσομοίωσης με πραγματοποίηση πειραμάτων διάτρησης και μετρήσεων. Μελέτη της επίδρασης των παραμέτρων της κατεργασίας διάτρησης στη δημιουργία απόληξης διάτρησης.
Ground state and spectral properties of the doped one-dimensional optical Hubbard-Su-Schrieffer-Heeger model
Creators: name: Banerjee, Debshikha
name: Thomas, Jinu
name: Nocera, Alberto
name: Johnston, Steven
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a density matrix renormalization group (DMRG) study of the doped one-dimensional (1D) Hubbard-Su-Schrieffer-Hegger (Hubbard-SSH) model, where the atomic displacements linearly modulate the nearest-neighbor hopping integrals. Focusing on an optical variant of the model in the strongly correlated limit relevant for cuprate spin chains, we examine how the SSH interaction modifies the model's ground and excited state properties. The SSH coupling weakly renormalizes the model's single- and two-particle response functions for electron-phonon ($e$-ph) coupling strengths below a parameter-dependent critical value $g_\mathrm{c}$. For larger $e$-ph coupling, the sign of the effective hopping integrals changes for a subset of orbitals, which drives a lattice dimerization distinct from the standard nesting-driven picture in 1D. The spectral weight of the one- and two-particle dynamical response functions are dramatically rearranged across this transition, with significant changes in the ground state correlations. We argue that this dimerization results from the breakdown of the linear approximation for the $e$-ph coupling and thus signals a fundamental limitation of the linear SSH interaction. Our results have consequences for our understanding of how SSH-like interactions can enter the physics of strongly correlated quantum materials, including the recently synthesized doped cuprate spin chains.
description: Comments Welcome
Strong lensing and shadow of Ayon-Beato-Garcia (ABG) nonsingular black hole
Creators: name: Ramadhan, H. S.
name: Ishlah, M. F.
name: Pratama, F. P.
name: Alfredo, I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study nonsingular black holes viewed from the point of view of Ayon-Beato-Garcia (ABG) nonlinear electrodynamics (NLED) and present a complete study of their corresponding strong gravitational lensing. The NLED modifies the the photon's geodesic, and our calculations show that such effect increases the corresponding photon sphere radius and image separation, but decreases the magnification. We also show that the ABG's shadow radius is not compatible with bound estimates of Sgr A* from Keck and VLTI (Very Large Telescope Interferometer). Thus, the possibility of Sgr A* being a nonsingular ABG black hole is ruled out.
description: 22 pages, 10 figures, 1 table
Anapole, chiral and orbital states in Mn3Si2Te6
Creators: name: Lovesey, Stephen W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ferrimagnet Mn3Si2Te6 attracts attention because of a recently discovered colossal magnetoresistance (CMR) with unique magnetic field properties. An improved magnetic structure for the material has emerged from a neutron diffraction study linked to understanding the CMR. A deeper theoretical investigation of the magnetic structure has now revealed anapole, chiral and orbital states of manganese ions not previously mentioned. Moreover, it is shown that existence of these states in the low temperature form of Mn3Si2Te6, with a magnetic field applied, can be tested by neutron and resonant x-ray diffraction.
Gravitational transverse-momentum distributions
Creators: name: Lorcé, Cédric
name: Song, Qin-Tao
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the energy-momentum tensor of spin-$0$ and spin-$\frac{1}{2}$ hadrons in momentum space. We parametrize this object in terms of so-called gravitational transverse-momentum distributions, and we identify in the quark sector the relations between the latter and the usual transverse-momentum distributions. Focusing on particular components of the energy-momentum tensor, we study momentum densities, flux of inertia and stress distribution in momentum space, revealing part of the wealth of physical information that can be gained from higher-twist transverse-momentum distributions.
description: 9 pages, 4 figures
title: Μέτρηση καταναλωτικών προτιμήσεων με χρήση διαδικτυακής Choice Based Conjoint Analysis: η περίπτωση των Tablet-PC
Creators: name: Μπουρμπακης Ιωαννης
Publisher: name: Technical University of Crete
Year: 2015

description: Τα τελευταία χρόνια το tablet έχει φτάσει να είναι στις πρώτες προτιμήσεις των χρηστών ηλεκτρονικών συσκευών, διότι έχει τη δυνατότητα να προσφέρει στο χρήστη έναν παραδοσιακό ηλεκτρονικό υπολογιστή σε μικρογραφία. Η  παγκόσμια ζήτηση για ταμπλέτες έχει πολλαπλασιαστεί, με αποτέλεσμα εκατομμύρια νέες συσκευές να κατακλύζουν την αγορά παρέχοντας μια ευρεία ποικιλία από χαρακτηριστικά και εφαρμογές από όπου κάποιος μπορεί να επιλέξει. Στο πλαίσιο αυτό στην παρούσα εργασία εντοπίσθηκαν και  αναλύθηκαν τα χαρακτηριστικά βάσει των οποίων επιλέγει ο καταναλωτής ένα tablet. Επειδή ο αριθμός των χαρακτηριστικών που αξιολογεί ένας καταναλωτής για να επιλέξει ένα tablet, μπορεί να είναι ιδιαίτερα μεγάλος, για τη μέτρηση της σημαντικότητας και της χρησιμότητάς τους σε ατομικό επίπεδο σχεδιάστηκε και θα υλοποιήθηκε μια έρευνα βασισμένη σε υπολογιστή (computer-based) μέσω διαδικτύου με χρήση της μεθόδου Choice Based Conjoint Analysis σε ένα μεγάλο καταναλωτικό δείγμα. Η μέθοδος αυτή δημιουργεί με δυναμικό τρόπο διαδοχικές ομάδες υποθετικών προφίλ από τα οποία ο χρήστης επιλέγει το πιο προτιμητέο. Έτσι γίνεται μέτρηση της καταναλωτικής συμπεριφοράς με μια εικονική προσομοίωση πραγματικής αγοραστικής διαδικασίας που μειώνει το φόρτο του ερωτώμενου και προσαρμόζεται δυναμικά στις επιλογές του.
The Gas Mass Reservoir of Quiescent Galaxies at Cosmic Noon
Creators: name: Blánquez-Sesé, David
name: Gómez-Guijarro, C.
name: Magdis, G. E.
name: Magnelli, B.
name: Gobat, R.
name: Daddi, E.
name: Franco, M.
name: Whitaker, K.
name: Valentino, F.
name: Adscheid, S.
name: Schinnerer, E.
name: Zanella, A.
name: Xiao, M.
name: Wang, T.
name: Liu, D.
name: Kokorev, V.
name: Elbaz, D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a 1.1mm stacking analysis of moderately massive (log($M_{*}$/$M_{\odot}$) = 10.7 $\pm$ 0.2) quiescent galaxies (QGs) at $\langle z\rangle \sim1.5$, searching for cold dust continuum emission, an excellent tracer of dust and gas mass. Using both the recent GOODS-ALMA survey as well as the full suite of ALMA Band-6 ancillary data in the GOODS-S field, we report the tentative detection of dust continuum equivalent of dust mass log($M_{dust}$/$M_{\odot}$) = 7.47 $\pm$ 0.13 and gas mass log($M_{gas}$/$M_{\odot}$) = 9.42 $\pm$ 0.14. The emerging gas fraction is $f_{gas}$ = 5.3 $\pm$ 1.8%, consistent with the results of previous stacking analyses based on lower resolution sub(mm) observations. Our results support the scenario where high-z QGs have an order of magnitude larger $f_{gas}$ compared to their local counterparts and have experienced quenching with a non negligible gas reservoir in their interstellar medium - i.e. with gas retention. Subsequent analysis yields an anti-correlation between the $f_{gas}$ and the stellar mass of QGs, especially in the high mass end where galaxies reside in the most massive haloes. The $f_{gas}$ - $M_{*}$ anti-correlation promotes the selection bias as a possible solution to the tension between the stacking results pointing towards gas retention in high-z QGs of moderate $M_{*}$ and the studies of individual targets that favour a fully depleted ISM in massive (log($M_{*}$/$M_{\odot}$) high-z QGs.
description: Accepted to A&A on the 16/03/2023
Asteroseismic age constraints on the open cluster NGC 2477 using oscillating stars identified with TESS FFI
Creators: name: Palakkatharappil, D. B.
name: Creevey, O. L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The ages of pulsating stars in clusters can be determined by isochrone fitting and it can be further improved by asteroseismic modelling. We analyse the intermediate-age open cluster NGC2477, known to suffer from differential extinction, to explore if asteroseismology and clusters characteristics can help understand the metallicity, extinction and result in better age determinations than isochrone-fitting alone. We combine a multitude of recent observations from Gaia, high-resolution spectroscopy, and extinction maps to analyse the cluster and then search for and detect variability in the member stars using TESS FFI data. To interpret all of these data, we used stellar structure, evolution and oscillation codes. We performed an isochrone fitting to the cluster using publically-available isochrones, which provides a cluster age of between 0.6 to 1.1 Ga. Then using TESS Full-frame images, we analysed the time dimension of the members of this cluster. We created optimised pixel light curves using the ${\tt tessipack}$ package which allows us to consider possible contamination by nearby stars. Using these light curves, we identified many interesting levels of variability of stars in this cluster, including binaries and oscillating stars. For the asteroseismic analysis, we selected a few uncontaminated A--F type oscillating stars and used the MESA and GYRE codes to interpret the frequency signals. By comparing the theoretical and the observed spectra, we identified frequency separations, $Δν$, for four stars. Then using the identified $Δν$ and imposing that the best matched theoretical models have the same age, metallicity and background extinction, we constrained the cluster's age to 1.0 $\pm$ 0.1 Ga. We conclude that using the TESS FFI data, we can identify oscillating stars in clusters, which allows us to better refine their ages.
description: 26 pages, 30 figures; accepted for publication in A&A
Computation of Effective Free Surfaces in Two-Phase Flows
Creators: name: Yapalparvi, R.
name: Protas, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this investigation we revisit the concept of "effective free surfaces" arising in the solution of the time-averaged fluid dynamics equations in the presence of free boundaries. This work is motivated by applications of the optimization and optimal control theory to problems involving free surfaces, where the time-dependent formulations lead to many technical difficulties which are however alleviated when steady governing equations are used instead. By introducing a number of precisely stated assumptions, we develop and validate an approach in which the interface between the different phases, understood in the time-averaged sense, is sharp. In the proposed formulation the terms representing the fluctuations of the free boundaries and of the hydrodynamic quantities appear as boundary conditions on the effective surface and require suitable closure models. As a simple model problem we consider impingement of free-falling droplets onto a fluid in a pool with a free surface, and a simple algebraic closure model is proposed for this system. The resulting averaged equations are of the free-boundary type and an efficient computational approach based on shape optimization formulation is developed for their solution. The computed effective surfaces exhibit consistent dependence on the problem parameters and compare favorably with the results obtained when the data from the actual time-dependent problem is used in lieu of the closure model.
title: Επίλυση του προβλήματος δρομολόγησης οχημάτων με χρήση της διαδικασίας άπληστη τυχαιοποιημένη προσαρμοστική αναζήτηση
Creators: name: Κοτζαμπαση Δαναη
Publisher: name: Technical University of Crete
Year: 2015

description: Η συγκεκριμένη διπλωματική εργασία έχει ως αντικείμενο την υλοποίηση κάποιων μεθόδων δρομολόγησης οχημάτων που χρησιμοποιούνται για τη διανομή των προϊόντων-αγαθών μιας εφοδιαστικής αλυσίδας. Οι μέθοδοι που χρησιμοποιούνται είναι οι κατασκευαστικοί αλγόριθμοι: Άπληστη τυχαιοποιημένη προσαρμοστική αναζήτηση (greedy randomized adaptive procedure ή GRASP) και πλησιέστερος γείτονας (nearest neighbor). Στόχος και των δύο μεθόδων είναι η κατασκευή μιας διαδρομής τέτοιας ώστε να ικανοποιούνται οι ανάγκες των πελατών που ορίζει κάθε φορά το πρόβλημα και να ελαχιστοποιείται το κόστος που προκύπτει από αυτή. Ταυτόχρονα, λαμβάνονται υπόψη περιορισμοί που αφορούν τη δεδομένη χωρητικότητα των οχημάτων και τον προκαθορισμένο χρόνο που κάθε όχημα επιτρέπεται να δαπανήσει στην εξυπηρέτηση. Ακόμα, για το καθορισμό της επιθυμητής διαδρομής δίνονται ως δεδομένα το πλήθος και οι τοποθεσίες των πελατών, η ζήτηση κάθε πελάτη και ο χρόνος εξυπηρέτησής του. Με τη μέθοδο του πλησιέστερου γείτονα, η επιλογή της σειράς εξυπηρέτησης των πελατών καθορίζεται από την απόσταση που απέχουν κάθε φορά οι πελάτες από το όχημα και επιλέγεται αυτός με την ελάχιστη, εφόσον φυσικά τηρούνται οι περιορισμοί που προαναφέρθηκαν. Με τη GRASP, η επιλογή των πελατών γίνεται τυχαία ανάμεσα σε ένα αριθμό πελατών που απέχουν λιγότερο από τη τρέχουσα θέση του οχήματος σε σχέση με τους υπόλοιπους χωρίς απαραίτητα να επιλέγεται ο πλησιέστερος. Και για τους δύο αλγόριθμους ισχύει ότι ένα όχημα ξεκινάει από την αποθήκη, επισκέπτεται τους πελάτες κατά το τρόπο που ορίζει κάθε φορά η μέθοδος, ελέγχοντας ταυτόχρονα τους περιορισμούς. Εάν αυτοί παραβιάζονται τότε το όχημα επιστρέφει στην αποθήκη και ένα νέο όχημα συνεχίζει την εξυπηρέτηση, ενώ οι αλγόριθμοι τερματίζουν όταν όλοι οι πελάτες έχουν εξυπηρετηθεί και τελικά το όχημα επιστρέφει στην αποθήκη. Έπειτα από τη κατασκευή των διαδρομών ακολουθεί η ανταλλαγή δύο τυχαίων πελατών μέσω της μεθόδου 1-1 ανταλλαγής (1-1 exchange). Η μέθοδος αυτή ανήκει στις τεχνικές τοπικής αναζήτησης και χρησιμοποιείται προκειμένου να ελεγχθεί εάν οι αρχικές λύσεις που έχουν κατασκευαστεί προηγουμένως μπορούν να βελτιωθούν περαιτέρω. Τόσο η μέθοδος GRASP όσο και η 1-1 exchange παράγουν τυχαίες λύσεις οι οποίες είναι πιθανό να διαφέρουν από επανάληψη σε επανάληψη γι αυτό και επιλέγουμε να τις επαναλάβουμε παραπάνω φορές συγκρίνοντας κάθε φορά τα αποτελέσματα που επιστρέφουν και επιλέγοντας αυτό που αποδίδει το ελάχιστο κόστος. Η υλοποίηση των παραπάνω μεθόδων πραγματοποιήθηκε στο προγραμματιστικό περιβάλλον MATLAB για ένα πλήθος διαφορετικών επαναλήψεων και δεδομένων προβλήματος ενώ τα αποτελέσματα που επιστρέφουν παρατίθενται και αναλύονται στο τέλος της εργασίας.
Non-unital non-Markovianity of quantum dynamics
Creators: name: Liu, Jing
name: Lu, Xiao-Ming
name: Wang, Xiaoguang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that Breuer-Laine-Piilo (BLP) non-Markovianity cannot capture the dynamical information in the non-unital aspect of the quantum dynamics. Moreover, we provide a measure on the effect of the non-unitality of quantum processes on the infinitesimal non-divisibility. This measure can be used as a supplement to BLP non-Markovianity for non-unital quantum processes. A measure on the degree of the non-unital behavior of quantum processes is also given in this paper.
description: accepted by Phys. Rev. A
Graph Signal Processing: History, Development, Impact, and Outlook
Creators: name: Leus, Geert
name: Marques, Antonio G.
name: Moura, José M. F.
name: Ortega, Antonio
name: Shuman, David I
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Graph signal processing (GSP) generalizes signal processing (SP) tasks to signals living on non-Euclidean domains whose structure can be captured by a weighted graph. Graphs are versatile, able to model irregular interactions, easy to interpret, and endowed with a corpus of mathematical results, rendering them natural candidates to serve as the basis for a theory of processing signals in more irregular domains. In this article, we provide an overview of the evolution of GSP, from its origins to the challenges ahead. The first half is devoted to reviewing the history of GSP and explaining how it gave rise to an encompassing framework that shares multiple similarities with SP. A key message is that GSP has been critical to develop novel and technically sound tools, theory, and algorithms that, by leveraging analogies with and the insights of digital SP, provide new ways to analyze, process, and learn from graph signals. In the second half, we shift focus to review the impact of GSP on other disciplines. First, we look at the use of GSP in data science problems, including graph learning and graph-based deep learning. Second, we discuss the impact of GSP on applications, including neuroscience and image and video processing. We conclude with a brief discussion of the emerging and future directions of GSP.
Robo-AO: autonomous and replicable laser-adaptive-optics and science system
Creators: name: Baranec, C.
name: Riddle, R.
name: Ramaprakash, A. N.
name: Law, N.
name: Tendulkar, S.
name: Kulkarni, S.
name: Dekany, R.
name: Bui, K.
name: Davis, J.
name: Burse, M.
name: Das, H.
name: Hildebrandt, S.
name: Punnadi, S.
name: Smith, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have created a new autonomous laser-guide-star adaptive-optics (AO) instrument on the 60-inch (1.5-m) telescope at Palomar Observatory called Robo-AO. The instrument enables diffraction-limited resolution observing in the visible and near-infrared with the ability to observe well over one-hundred targets per night due to its fully robotic operation. Robo- AO is being used for AO surveys of targets numbering in the thousands, rapid AO imaging of transient events and longterm AO monitoring not feasible on large diameter telescope systems. We have taken advantage of cost-effective advances in deformable mirror and laser technology while engineering Robo-AO with the intention of cloning the system for other few-meter class telescopes around the world.
description: 11 pages, 8 figures and 3 tables
Production of neptunium and plutonium nuclides from uranium carbide using 1.4-GeV protons
Creators: name: Au, M.
name: Athanasakis-Kaklamanakis, M.
name: Nies, L.
name: Heinke, R.
name: Chrysalidis, K.
name: Köster, U.
name: Kunz, P.
name: Marsh, B.
name: Mougeot, M.
name: Schweikhard, L.
name: Stegemann, S.
name: Gracia, Y. Vila
name: Düllmann, Ch. E.
name: Rothe, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Accelerator-based techniques are one of the leading ways to produce radioactive nuclei. In this work, the Isotope Separation On-Line method was employed at the CERN-ISOLDE facility to produce neptunium and plutonium from a uranium carbide target material using 1.4-GeV protons. Neptunium and plutonium were laser-ionized and extracted as 30-keV ion beams. A Multi-Reflection Time-of-Flight mass spectrometer was used for ion identification by means of time-of-flight measurements as well as for isobaric separation. Isotope shifts were investigated for the 395.6-nm ground state transition in $^{236,237,239}$Np and the 413.4-nm ground state transition in $^{236,239,240}$Pu. Rates of $^{235-241}$Np and $^{234-241}$Pu ions were measured and compared with predictions of in-target production mechanisms simulated with GEANT4 and FLUKA to elucidate the processes by which these nuclei, which contain more protons than the target nucleus, are formed. $^{241}$Pu is the heaviest nuclide produced and identified at a proton-accelerator-driven facility to date. We report the availability of neptunium and plutonium as two additional elements at CERN-ISOLDE and discuss the limit of accelerator-based isotope production at high-energy proton accelerator facilities for nuclides in the actinide region.
description: 12 pages, 12 figures
title: Ανάπτυξη μοντέλου εκτίμησης της αξιοποίησης προσωπικού – εφαρμογή σε Οργανισμό Τοπικής Αυτοδιοίκησης
Creators: name: Μπολανακη Δεσποινα
Publisher: name: Technical University of Crete
Year: 2015

description: Η παρούσα μεταπτυχιακή διατριβή  πραγματεύεται το θέμα της Διοίκησης Ανθρωπίνων Πόρων  και εστιάζει στην ορθολογική αξιοποίηση του προσωπικού  αναπτύσσοντας ένα  μοντέλο εκτίμησης της αξιοποίησης του ανθρώπινου δυναμικού, το οποίο μεταξύ άλλων  μετράει το βαθμό αξιοποίησης ενός εργαζομένου σε μια συγκεκριμένη θέση εργασίας, το συνολικό βαθμό αξιοποίησης όλων των εργαζομένων στο σύνολο των θέσεων του οργανισμού και προτείνει την βέλτιστη ανάθεση για το σύνολο των εργαζομένων και των θέσεων εργασίας, ώστε να μεγιστοποιείται ο συνολικός βαθμός αξιοποίησης του υπάρχοντος ανθρώπινου δυναμικού σε μία επιχείρηση ή οργανισμό. Το μοντέλο εκτός των παραπάνω δύο βασικών λειτουργιών μπορεί να χρησιμοποιηθεί σε όλες σχεδόν τις λειτουργίες της Διοίκησης Ανθρώπινων Πόρων όπως στον προσδιορισμό αναγκών σε προσωπικό, στην επιλογή νέου προσωπικού (προσλήψεις) ,στην ανίχνευση εκπαιδευτικών αναγκών, στην ανάπτυξη των εργαζομένων, στις προαγωγές, στην αξιολόγηση των εργαζομένων κ.λπ. Η μορφή του  είναι αρκετά παραμετρική ώστε εύκολα να μπορεί να προσαρμοστεί σε κάθε άλλη κατηγορία προσωπικού ή σε κάθε άλλη  επιχείρηση/οργανισμό.
Στο πλαίσιο της εργασίας αρχικά γίνεται μία θεωρητική παρουσίαση τι είναι η  Διοίκηση Ανθρωπίνων Πόρων και παρουσιάζονται οι βασικές της λειτουργίες σε μία επιχείρηση ενώ στη συνέχεια παρουσιάζεται η ανάπτυξη του  μοντέλου  εκτίμησης της αξιοποίησης του ανθρώπινου δυναμικού και η εφαρμογή του στο διοικητικό προσωπικό  ενός  Οργανισμού Τοπικής Αυτοδιοίκησης.
title: Methane Production Rate during Anoxic Litter Decomposition Depends on Si Mass Fractions, Nutrient Stoichiometry, and Carbon Quality
Creators: name: Hömberg, Annkathrin
name: Knorr, Klaus-Holger
name: Schaller, Jörg
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2021
Subjects: subject: 550 Earth sciences

description: While Si influences nutrient stoichiometry and decomposition of graminoid litter, it is still unclear how Si influences anoxic litter decomposition and CH4 formation in graminoid dominated fen peatlands. First, Eriophorum vaginatum plants were grown under different Si and P availabilities, then shoots and roots were characterized regarding their proportions of C, Si, N and P and regarding C quality. Subsequently the Eriophorum shoots were subjected to anoxic decomposition. We hypothesized; that (I) litter grown under high Si availability would show a higher Si but lower nutrient mass fractions and a lower share of recalcitrant carbon moieties; (II) high-Si litter would show higher CH4 and CO2 production rates during anoxic decomposition; (III) methanogenesis would occur earlier in less recalcitrant high-Si litter, compared to low-Si litter. We found a higher Si mass fraction that coincides with a general decrease in C and N mass fractions and decreased share of recalcitrant organic moieties. For high-Si litter, the CH4 production rate was higher, but there was no long-term influence on the CO2 production rate. More labile high-Si litter and a differential response in nutrient stoichiometry led to faster onset of methanogenesis. This may have important implications for our understanding of anaerobic carbon turnover in graminoid-rich fens.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).