cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
3D MHD simulations of an accreting young star
Creators: name: Takasao, Shinsuke
name: Tomida, Kengo
name: Iwasaki, Kazunari
name: Suzuki, Takeru
Publisher: name: Zenodo
Year: 2021
Subjects: Young stars
Magnetospheric accretion
MHD simulations

description: Young stars such as protostars and pre-main-sequence stars evolve via the interaction with the surrounding accretion disks. It is believed that stellar and disk magnetic fields play important roles in shaping the accretion structure and exchanging the angular momentum between the stars and the disks. However, because of the complexity of gas dynamics around the stars, the star-disk interaction remains poorly understood, which makes the construction of the stellar evolution models difficult. To reveal the interaction processes, we have been performing 3D magnetohydrodynamic simulations of accretion onto a young star with different stellar magnetic fields. In the case of a weakly magnetized, magnetosphere-free star, we found that failed disk wind becomes supersonic, high-latitude accretion flows onto the star (Takasao et al. 2018). This result may explain the reason why Herbig Ae/Be stars show fast accretion. In a different model with stronger disk fields, we showed that the star can produce recurrent explosions via magnetic reconnection (Takasao et al. 2019). We consider that the mechanism is relevant to protostellar flares in class-0/I protostars. In addition to the above two models, we have been investigating the magnetospheric accretion which is very relevant to classical T-Tauri stars. In this talk, we will introduce our 3D modeling and discuss how the star-disk interaction changes depending on the stellar and disk field strengths.
description: {"references": ["Kulkarni, A. K. and Romanova, M. M. (2008). Accretion to magnetized stars through the Rayleigh-Taylor instability: global 3D simulations", "Takasao, Shinsuke et al. (2018). A Three-dimensional Simulation of a Magnetized Accretion Disk: Fast Funnel Accretion onto a Weakly Magnetized Star", "Takasao, Shinsuke et al. (2019). Giant Protostellar Flares: Accretion-driven Accumulation and Reconnection-driven Ejection of Magnetic Flux in Protostars", "Cauley, P. Wilson; Johns-Krull, Christopher M. (2014). Diagnosing Mass Flows around Herbig Ae/Be Stars Using the He I \u03bb10830 Line", "Stone, James M. et al. (2020). The Athena++ Adaptive Mesh Refinement Framework: Design and Magnetohydrodynamic Solvers"]}
Dynamical Screening Effects on Big Bang Nucleosynthesis
Creators: name: Hwang, Eunseok
name: Jang, Dukjae
name: Park, Kiwan
name: Kusakabe, Motohiko
name: Kajino, Toshitaka
name: Balantekin, A. Baha
name: Maruyama, Tomoyuki
name: Ryu, Chang-Mo
name: Cheoun, Myung-Ki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A moving ion in plasma creates a deformed electric potential depending on the ion velocity, which leads to the distinct screening effect compared to the standard static Salpeter formula. In this paper, adopting the test charge method, we explore the dynamical screening effects on big bang nucleosynthesis (BBN). We find that the high temperature in the early universe causes the ion velocity to be faster than the solar condition so that the electric potential is effectively polarized. However, the low density of background plasma components significantly suppresses the dynamical screening effects on thermonuclear reaction rates during the BBN epoch. We compare our results with several thermonuclear reaction rates for solar fusion considering the dynamical screening effects. Also, we discuss the additional plasma properties in other astrophysical sites for the possible expansion from the present calculation in the future.
Ανάπτυξη πληροφοριακού συστήματος για τη βέλτιστη επιλογή ξύλου και προϊόντων ξύλου στον τομέα των δομικών κατασκευών:
Creators: name: Σερέτης, Κωνσταντίνος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Πληροφοριακό σύστημα
Δομικές κατασκευές
Βέλτιστη επιλογή ξύλου
Information technology system
Constructions
Optimum choice of wood

description: Σκοπός της παρούσας μεταπτυχιακής διατριβής είναι η ανάπτυξη ενός πληροφοριακού συστήματος για τη βέλτιστη επιλογή ξύλου και προϊόντων ξύλου στον τομέα των δομικών κατασκευών. Στην παρούσα μεταπτυχιακή διατριβή χρησιμοποιήθηκαν για αυτόν το σκοπό τα τεχνητά νευρωνικά δίκτυα, γιατί συνδυάζουν το πλεονέκτημα της μεγάλης αξιοπιστίας τους ως μεθόδου παραγωγής εκτιμήσεων και την έλλειψη επαρκούς εφαρμογής τους γύρω από το αντικείμενο που ερευνάται.Τα αποτελέσματα που βγήκαν από την έρευνα αυτή οδήγησαν στο συμπέρασμα ότι η μεγαλύτερη πληθώρα παραγόντων και η μεγαλύτερη πληρότητα στις τιμές αυτών των παραγόντων οδηγούν σε καλύτερες εκτιμήσεις, όταν τοποθετηθούν σε νευρωνικό δίκτυο σαν αυτό που προτείνεται. Συνεπώς η χρησιμότητα των παραπάνω συμπερασμάτων έγκειται στο γεγονός ότι οι πιθανές διαφοροποιήσεις αυτών των παραγόντων μπορούν να προσαρμοστούν σε ποικίλους τομείς της δασολογικής επιστήμης με μεγάλη επιτυχία, η οποία εξαρτάται από την καλύτερη προετοιμασία των κατάλληλων κατά περίπτωση παραγόντων.
description: The purpose of the current postgraduate thesis is the development of an information technology system for the optimum choice of wood and wood products in the construction sector. In the current thesis artificial neural networks were used because they combine the advantage of high credibility as an prediction producing method and the lack of adequate implementation on the object in hand. The results of this research have led to the conclusion that the multitude of factors and their adequacy lead to better prediction when fed into the neural network recommended. Consequently, the usefulness of the conclusions mentioned above lies on the fact that the probable variations of those factors can be adapted to numerous aspects of the science of forestry with great success, which in turn depends on the better preparation of the suitable factors.
Fellner, Constantin & Sohn
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Frankfurt a. M.
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Pivotal and Pivotal-discriminative Consequence Relations
Creators: name: Ben-Naim, Jonathan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: In the present paper, we investigate consequence relations that are both paraconsistent and plausible (but still monotonic). More precisely, we put the focus on pivotal consequence relations, i.e. those relations that can be defined by a pivot (in the style of e.g. D. Makinson). A pivot is a fixed subset of valuations which are considered to be the important ones in the absolute sense. We worked with a general notion of valuation that covers e.g. the classical valuations as well as certain kinds of many-valued valuations. In the many-valued cases, pivotal consequence relations are paraconsistant (in addition to be plausible), i.e. they are capable of drawing reasonable conclusions which contain contradictions. We will provide in our general framework syntactic characterizations of several families of pivotal relations. In addition, we will provide, again in our general framework, characterizations of several families of pivotal discriminative consequence relations. The latter are defined exactly as the plain version, but contradictory conclusions are rejected. We will also answer negatively a representation problem that was left open by Makinson. Finally, we will put in evidence a connexion with X-logics from Forget, Risch, and Siegel. The motivations and the framework of the present paper are very close to those of a previous paper of the author which is about preferential consequence relations.
FAIRDOM: FAIR data management for life science
Creators: name: Krebs, Olga Dona
Publisher: name: F1000 Research Limited
Year: 2019

description: Systems biology research typically involves the integration and analysis of heterogeneous data types in order to model and predict biological processes. As a result, data management has become an important part of modern research and software infrastructure is necessary to support the whole data life cycle, from data acquisition, through analysis, to data sharing. Here, we present the FAIRDOM project, which aims to establish an internationally sustained service to enable the systems biology community to produce Findable, Accessible, Interoperable and Reproducible (FAIR) Data, Operating procedures and Models. The FAIRDOMHUb is an internationally sustained resource for researchers to share and publish data, models, protocols and the relationships between them, together with services for curation, training and community knowledge exchange. The FAIR principles for Systems Biology are supported by the capabilities of the Hub and in particular our SEEK software that underpins it. By drawing together the multiple components of investigations, regardless of their physical location, we contextualize experiments and richly annotate and interlink the components. By using the FAIRDOM software as they run their projects, either through the Hub or independen
Objectivist compatibilist utilitarianism
Creators: name: Sleigh, Nicholas Campbell
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis a version of the ethical theory of utilitarianism is defended. The version defended is called ‘objectivist compatibilist utilitarianism’, or ‘OCtJ’. On this version, utilitarian metaethics includes the propositions that there is an objective, intrinsic property of goodness entifying, motivating, and grounding ethics, and that act and rule utilitarianism are compatible since under plausible interpretations both true. While this metaethical theory has perhaps not been stated explicitly before, theories in this vein have been popular since the mid—l9th century, and have been expounded by philosophers such as J.S. Mill and G.E. Moore. OCU will be defended by examination of six influential objections to various of its hypotheses. In each case, thorough conceptual analysis, aided by consultation of relevant scientific facts about human nature, will reveal that the objection is seriously flawed. In the process of dispatching these negative considerations, a comprehensive positive ethical theory will emerge. Most other currently popular ethical theories are not comprehensive, but instead take no position (or several, which amounts to the same thing) on one or more of the major issues that any comprehensive ethical theory must deal with. OCU thus emerges as one of only a very few contemporary comprehensive ethical theories — and on balance the most plausible of the lot.
Learning orbital dynamics of binary black hole systems from gravitational wave measurements
Creators: name: Keith, Brendan
name: Khadse, Akshay
name: Field, Scott E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Machine Learning (cs.LG)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We introduce a gravitational waveform inversion strategy that discovers mechanical models of binary black hole (BBH) systems. We show that only a single time series of (possibly noisy) waveform data is necessary to construct the equations of motion for a BBH system. Starting with a class of universal differential equations parameterized by feed-forward neural networks, our strategy involves the construction of a space of plausible mechanical models and a physics-informed constrained optimization within that space to minimize the waveform error. We apply our method to various BBH systems including extreme and comparable mass ratio systems in eccentric and non-eccentric orbits. We show the resulting differential equations apply to time durations longer than the training interval, and relativistic effects, such as perihelion precession, radiation reaction, and orbital plunge, are automatically accounted for. The methods outlined here provide a new, data-driven approach to studying the dynamics of binary black hole systems.
Κεραμική από τον νεολιθικό οικισμό στην Θέρμη Θεσσαλονίκης: Κεραμική από τον νεολιθικό οικισμό στην Θέρμη Θεσσαλονίκης : χωρική κατανομή και προσδιορισμός λειτουργίας των χώρων:
Creators: name: Elezi, Gasmend Haxhi
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Νεολιθική
Κεραμική
Βόρεια Ελλάδα
Neolithic
Pottery
Northern Greece

description: Σκοπός της εργασίας ήταν η μελέτη κεραμικής από τον νεολιθικό οικισμό στην Θέρμη Θεσσαλονίκης. Το θεωρητικό πλαίσιο της μελέτης διαμορφώνεται από τον συνδυασμό της αλυσίδας εγχειρημάτων που συμβάλει στην προσέγγιση των τεχνολογικών πρακτικών και της βιογραφίας των αντικειμένων που δίνει την δυνατότητα κατανόησης της νοηματοδότησης των αντικειμένων στην διάρκεια συνύπαρξης τους με του ανθρώπους. Από την άλλη, το βασικό μεθοδολογικό εργαλείο που χρησιμοποιήθηκε είναι η ταξινόμηση της ποικιλομορφίας σε διάφορες κατηγορίες με κοινά χαρακτηριστικά. Η ερευνά επικεντρώθηκε στην παρατήρηση, την κατηγοριοποίηση και την ερμηνεία των μεταβλητών που σχετίζονται με την τεχνολογία την μορφολογία, την χωρική κατανομή και την απόθεση των κεραμικών οστράκων. Στην συνέχεια πραγματοποιήθηκε ποιοτική και ποσοτική ανάλυση των δεδομένων που προέκυψαν από την καταγραφή με σκοπό την κατανόηση της κεραμικής ποικιλομορφίας, αλλά και τον προσδιορισμό της λειτουργία των χώρων όπου βρέθηκε. Επιπλέον, τα ευρήματα της καταγραφής συγκρίθηκαν με την κεραμική που έχει δημοσιευθεί από άλλες Νεολιθικές θέσεις στην περιοχή της Βόρειας Ελλάδας σε μια προσπάθεια τοποθέτησης της νεολιθικής κεραμικής από την Θέρμη σε ένα χρονολογικό αλλά και γεωγραφικό πλαίσιο.
description: The aim of the present thesis was the study of pottery from the neolithic settlement at Thermo Thesaloniki. The theoretical frame of the study is consisted by the combination of chaine operatorie that contributes in approaching the technological process and the concept of biography of objects, which enables understanding the meaning of them during the coexistence with people. On other hand, the main methodological tools used are the observation and classification of variability associated with technology, morphology, spatial distribution and the deposition of ceramic sherds in different categories with common characteristics. Then, o qualitative and quantitative analysis of data was carry out to understand and interpret the diversity of pottery and the use of space in which it was found. Furthermore, the results compared with pottery published from other neolithic sites in Northern Greece in attempt to set the pottery from Thermi in a chronological and geographical context.
Binaries and the L Dwarf/T Dwarf Transition
Creators: name: Burgasser, Adam J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High-resolution imaging has revealed an unusually high binary fraction amongst objects spanning the transition between the L dwarf and T dwarf spectral classes. In an attempt to reproduce and unravel the origins of this apparent binary excess, I present a series of Monte Carlo mass function and multiplicity simulations of field brown dwarfs in the vicinity of the Sun. These simulations are based on the solar metallicity brown dwarf evolutionary models and incorporate empirical luminosity and absolute magnitude scales, measured multiplicity statistics and observed spectral templates in the construction and classification of composite binary spectra. In addition to providing predictions on the number and surface density distributions of L and T dwarfs for volume-limited and magnitude-limited samples, these simulations successfully reproduce the observed binary fraction distribution assuming an intrinsic (resolved) binary fraction of 11(+6)(-3)% (95% confidence interval), consistent with prior determinations. However, the true binary fraction may be as high as 40% if, as suggested by Liu et al., a significant fraction of L/T transition objects (~66%) are tightly-bound, unresolved multiples. The simulations presented here demonstrate that the binary excess amongst L/T transition objects arises primarily from the flattening of the luminosity scale over these spectral types and is not inherently the result of selection effects incurred in current magnitude-limited imaging samples. Indeed, the existence of a binary excess can be seen as further evidence that brown dwarfs traverse the L/T transition rapidly, possibly driven by a nonequilibrium submergence of photospheric condensates.
description: 51 pages, 14 figures; accepted for publication in ApJ
Camossi, Frères
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Lugano
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Holliger, J. J
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Zofingen
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Chauviteau & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Paris
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Mapping stellar activity indicators across the M dwarf domain
Creators: name: Lafarga, Marina
name: Ribas, Ignasi
name: Reiners, Ansgar
name: Quirrenbach, Andreas
name: Amado, Pedro J.
name: Caballero, Jose A.
name: Azzaro, Marco
name: Béjar, Víctor J. S.
name: Cortés-Contreras, Miriam
name: Dreizler, Stefan
name: Hatzes, Artie P.
name: Henning, Thomas
name: Jeffers, Sandra V.
name: Kaminski, A.
name: Kürster, Martin
name: Montes, David
name: Morales, Juan Carlos
name: Oshagh, Mahmoud
name: Rodríguez-López, Cristina
name: Schöfer, Patrick
name: Schweitzer, Andreas
name: Zechmeister, Mathias
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence
radial velocities
late-type stars
low-mass stars
rotation
stellar activity

description: Despite stellar magnetic activity being present in most cool stars, its effects on spectroscopic observations are still not well understood. Several activity indicators are routinely used to identify activity-related signals in radial velocity (RV) measurements, but not all indicators trace exactly the same effects, nor are any of them always effective in all stars. This poses one of the main obstacles for the detection and characterisation of small exoplanets, as magnetic activity biases RV signals. In this work, we analyse the temporal behaviour of RVs and a set of spectroscopic indicators for 98 M dwarfs observed with CARMENES, with the aim of finding a relation between indicator performance and stellar properties. We find periodic signals related to activity for 56 sample stars. The activity indicators behave differently depending on the mass and activity level of the target star, e.g., cross-correlation function bisector inverse slope and chromatic index are effective activity tracers for the most active stars in the sample, especially stars with relatively high mass, while for less active stars, chromospheric lines perform best. Most of the targets for which we cannot identify any activity-related signal are stars at the low-mass end of the sample, where stars are fully convective, and also show the lowest RV scatter. This could potentially hint at different manifestations of activity compared to higher-mass stars. Moreover, ultracool M dwarfs could be better candidates for planet searches than earlier types, which display higher levels of RV variability. Our results show that none of the indicators are effective activity tracers for all stars. Therefore, an analysis of a large set of indicators seems necessary to obtain a complete picture of stellar activity variability. This becomes critical when assessing the origin of RV signals, as not using the most effective indicators considering the characteristics of the star may lead to false planet claims.
Quantum phase transitions of the diluted O(3) rotor model
Creators: name: Vojta, Thomas
name: Sknepnek, Rastko
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the phase diagram and the quantum phase transitions of a site-diluted two-dimensional O(3) quantum rotor model by means of large-scale Monte-Carlo simulations. This system has two quantum phase transitions, a generic one for small dilutions, and a percolation transition across the lattice percolation threshold. We determine the critical behavior for both transitions and for the multicritical point that separates them. In contrast to the exotic scaling scenarios found in other random quantum systems, all these transitions are characterized by finite-disorder fixed points with power-law scaling. We relate our findings to a recent classification of phase transitions with quenched disorder according to the rare region dimensionality, and we discuss experiments in disordered quantum magnets.
description: 11 pages, 14 eps figures, final version as published
Aνάπτυξη μοντέλων περιγραφής λειτουργίας κυκλωμάτων σε νανομετρικές διαστάσεις:
Creators: name: Χαουράνι, Παναγιώτης
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: αναλυτικά μοντέλα
νάνο-κλίμακα
ψηφιακά ολοκληρωμένα κυκλώματα
analytical models
nano-scale technologies
digital integrated circuits

description: Στα πλαίσια της παρούσας διπλωματικής αναλυτικά μοντέλα για την περιγραφή της λειτουργίας του τρανζίστορ διέλευσης και του ψηφιακού αντιστροφέα έχουν παραχθεί. Τα αναλυτικά μοντέλα μας εξασφαλίζουν αυξημένη ταχύτητα υπολογισμών σε σύγκριση με αντίστοιχα αριθμητικά και επίσης μας παρέχουν την δυνατότητα μελέτης των αποτελεσμάτων που έχουν οι μεταβλητότητες ορισμένων χαρακτηριστικών των κυκλωμάτων στην απόδοση αυτών. Κατάλληλες προσεγγίσεις έχουν γίνει για την ενσωμάτωση των φαινομένων νάνο-κλίμακας στα παραχθέντα μοντέλα χωρίς να θυσιάζουμε σημαντικά την ακρίβεια. Το 1ο κεφάλαιο αποτελεί εισαγωγή στην έννοια των αναλυτικών μοντέλων. Στο 2ο το μοντέλο του ρεύματος που θα χρησιμοποιηθεί στους υπολογισμούς περιγράφεται, ενώ στο 3ο κεφάλαιο προτείνεται μία προσεγγιστική μέθοδος για τον υπολογισμό των παρασιτικών χωρητικοτήτων ενός τρανζίστορ. Στα κεφάλαια 4 και 5 τα αναλυτικά μοντέλα για το τρανζίστορ διέλευσης και τον ψηφιακό αντιστροφέα περιγράφονται, ενώ στο κεφάλαιο 6 δίνεται μία νέα προσέγγιση για τον υπολογισμό της κυματομορφής εξόδου ενός ψηφιακού αντιστροφέα χρησιμοποιώντας ακολουθιακές σχέσεις για την τάση. Τα παραχθέντα μοντέλα έχουν συγκριθεί μέ προσομοιώσεις στο εργαλείο HSPICE τόσο για συμβατικές επίπεδες τεχνολογίες τρανζιστορ υποστρώματος όσο και για τεχνολογίες FINFET. Τέλος στο κεφάλαιο 6 καταλήγουμε σε συμπεράσματα της μελέτης και σε πιθανούς μελλοντκούς ερευνητικούς στόχους.
description: In this thesis analytical models that describe the operation of the pass transistor structure and the CMOS inverter have been proposed. Analytical models guarantee greater calculations speed compared to arithmetic ones and are vital for the study of process variations effects on a circuit’s performance. Appropriate approximations have been made so as to study the effect of nano-scale phenomena on the studied circuits’ operation without however sacrificing accuracy. The first chapter is an introduction on circuit-level analytical models. In Section 2 the current model that will be used in the calculations has been described, while in Section 3 approximations for the calculation of the transistors’ parasitic capacitances are given. In Sections 4 and 5 the produced analytical models for the pass transistor and the inverter respectively are described and in Section 6 a sequential approach for the estimation of the inverter’s output waveform is given. The produced models are evaluated through comparisons with HSPICE simulations for both planar bulk technologies and FINFET ones. Finally we conclude in Section 6 were future research goals are proposed.
Henner, J. A., Einzüger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Wil SG
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
COMANDO: A Next-Generation Open-Source Framework for Energy Systems Optimization
Creators: name: Langiu, Marco
name: Shu, David Yang
name: Baader, Florian Joseph
name: Hering, Dominik
name: Bau, Uwe
name: Xhonneux, André
name: Müller, Dirk
name: Bardow, André
name: Mitsos, Alexander
name: Dahmen, Manuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Existing open-source modeling frameworks dedicated to energy systems optimization typically utilize (mixed-integer) linear programming ((MI)LP) formulations, which lack modeling freedom for technical system design and operation. We present COMANDO, an open-source Python package for component-oriented modeling and optimization for nonlinear design and operation of integrated energy systems. COMANDO allows to assemble system models from component models including nonlinear, dynamic and discrete characteristics. Based on a single system model, different deterministic and stochastic problem formulations can be obtained by varying objective function and underlying data, and by applying automatic or manual reformulations. The flexible open-source implementation allows for the integration of customized routines required to solve challenging problems, e.g., initialization, problem decomposition, or sequential solution strategies. We demonstrate features of COMANDO via case studies, including automated linearization, dynamic optimization, stochastic programming, and the use of nonlinear artificial neural networks as surrogate models in a reduced-space formulation for deterministic global optimization.
description: 24 pages, 1 graphical abstract, 13 figures, 4 tables
Steepened inner density profiles of group galaxies via interactions: An N-body analysis
Creators: name: Dobke, Benjamin M.
name: King, Lindsay J.
name: Fellhauer, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We continue to see a range of values for the Hubble constant obtained from gravitationally lensed multiple image time delays when assuming an isothermal lens despite a robust value from the HST key project (72 +- 8 km s^-1 Mpc^-1. One explanation is that there is a variation in Hubble constant values due to a fundamental heterogeneity in lens galaxies present in groups. Our goal is to see if a variety of group interactions between the most massive group members can result in significant changes in the galaxy density profiles over the scale probed by strong lensing (<15 kpc). While stripping of the outer parts of the halo can be expected, the impact on inner regions where the luminous component is important is less clear in the context of lensing, though still crucial, as a steepened density profile within this inner region allows these lens systems to be consistent with current HST/WMAP estimates on H_0. We employ the particle-mesh code SUPERBOX to carry out the group interaction simulations. We simulate interactions between group members, comparing the density profile for the satellite before and after interaction for the mass range of 10^11 to 10^13 M_sun. Our investigations show a significant steepening of the density profile in the region of < 5-20 kpc, i.e. that which dominates strong lensing in lens galaxies. Additionally, the steepening in the inner region is transient in nature, with consecutive interactions returning the profile to an isothermal state within a timeframe of ~ 0.5 - 2.0 Gyr. This factor may help explain why lens galaxies that produce lower values of H_0 (i.e. those with possibly steeper profiles) are far fewer in number than those which agree with both the HST key project value for H_0 and isothermality, since one would have to observe the lens galaxy during this transient steepened phase.
description: 8 pages, 6 figures, MNRAS accepted
Observing planet-starspot crossings with the James Webb Space Telescope
Creators: name: Bruno, Giovanni
name: Lewis, Nikole K.
name: Valenti, Jeff
name: Pagano, Isabella
name: Fraine, Jonathan
name: Schlawin, Everett
name: Lothringer, Joshua
name: Lanza, Antonino F.
name: Scandariato, Gaetano
name: Micela, Giuseppina
name: Cracchiolo, Gianluca
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence
Exoplanets
Exoplanet host stars
Transmission spectroscopy
Starspots

description: Transiting exoplanets orbiting active stars frequently occult starspots and faculae on the visible stellar disc. Such occultations can provide useful constraints to retrieve the temperature of active features and their effect on transmission spectra. We analyse the constraints that the James Webb Space Telescope will be able to place on the spectra of starspots, despite its lack of optical wavelength instruments on board. Focusing on K and M spectral types, we find that starspot temperatures can be determined to within a few hundred kelvins using NIRSpec/Prism and the proposed NIRCam/F150W2+F322W2’s broad wavelength capabilities.
description: GB acknowledges support from CHEOPS ASI-INAF agreement n. 2019-29-HH.0. GM and GC acknowledge the support of the ARIEL ASI-INAF agreement n.2018-22-HH.0. This research has made use of the SVO Filter Profile Service (http://svo2.cab.inta-csic.es/theory/fps/) supported from the Spanish MINECO through grant AYA2017-84089.
description: {"references": ["Batalha N. E., et al., 2017, Publications of the Astronomical Society of thePacific, 129, 064501", "Schlawin E., et al., 2016, Publications of the Astronomical Society of thePacific, 129, 015001", "Montalto M., Bou\u00e9 G., Oshagh M., Boisse I., Bruno G., Santos N. C., 2014,MNRAS, 444, 1721", "Sarkar S., Madhusudhan N., Papageorgiou A., 2020, MNRAS, 491, 378; Sing D. K., et al., 2011, MNRAS, 416, 1443"]}
Megaleporinus piavussu
Creators: name: Benitez, Mauricio Fabián
name: Aichino, Danilo Ramón
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Anostomidae
Megaleporinus
Megaleporinus piavussu

description: Megaleporinus piavussu (Britski, Birindelli & Garavello, 2012)
Fig. 1, Table 1
Material examined (all from the Paraná river): LGEP 856 (2), 326,30 and 346,52 mm, Argentina, Corrientes, Ituzaingó. (27°29’30”S, 56°40’48”W). Coll.: D.R. Aichino, 21.10.201 9 | LGEP 857 (1), 306,12 mm, Argentina, Corrientes, Ituzaingó. (27°29’06”S, 56°40’23”W). 11, 12, 2019. Coll. D.R. Aichino, 11.12.201 9.
description: Published as part of Benitez, Mauricio Fabián & Aichino, Danilo Ramón, 2020, First record of Megaleporinus piavussu (Characiformes: Anostomidae) from Argentina., pp. 1-4 in Ichthyological Contributions of PecesCriollos 64 on page 2, DOI: 10.5281/zenodo.11558358
Cumulative generation of maximal entanglement between spectrally distinct qubits using squeezed light
Creators: name: Callus, Elena
name: Kok, Pieter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate how to create maximal entanglement between two qubits that are encoded in two spectrally distinct solid-state quantum emitters embedded in a waveguide interferometer. The optical probe is provided by readily accessible squeezed light, generated by parametric down-conversion. By continuously illuminating the emitters, the photon scattering and incremental path-erasure builds up entanglement. Our method does not require perfectly identical emitters, and accommodates spectral variations due to the fabrication process. Furthermore, for some line-width and energy ratios, the entanglement build-up can be significantly faster than for more similar emitters. It is also robust enough to create entanglement with a concurrence above 99\% in the event of scattering losses and detector inefficiencies, and can form the basis for practical entangled networks.
description: 12 pages, 5 figures
Cnopf, Johann Conrad (Knopf)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Nürnberg
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Unbiased effective temperatures of red supergiants from iron absorption lines
Creators: name: Taniguchi, Daisuke
name: Team, The WINERED
Publisher: name: Zenodo
Year: 2021
Subjects: Post main sequence cool stars
Red supergiants
Effective temperature
Near-infrared spectroscopy

description: The Great Dimming of Betelgeuse in 2019/2020 raised the question of how to accurately measure the property of a red supergiant (RSG), for example, effective temperature, star-spot covering fraction, and reddening. Here we focus on the effective temperature, which might be the most representative parameter among them. Among spectroscopic approaches to determine the temperature, the methods using atomic lines in high-resolution spectra have some advantages compared to those using molecular bands; relatively shallow atomic lines are less affected by the uncertain temperature structure in the upper atmosphere of RSGs. A promising approach is the line-depth ratio (LDR) method using ratios of line depths of two atomic absorption lines, which has been successfully applied to various kinds of late-type stars. In this work, we established the relations between effective temperature and LDR of two neutral Fe lines based on calibrating red giant. Our LDR indicators are expected to give the consistent temperature scale both red giants and RSGs because the LDRs of two neutral Fe lines are insensitive to the surface gravity. We then measured the effective temperatures of ten nearby RSGs including Betelgeuse observed with the WINERED near-infrared high-resolution spectrograph (0.97--1.32 micron, R=28,000) to a precision of ~40K. Combining these temperatures with the parallaxes in the Gaia EDR3, we also determined the bolometric luminosities of the RSGs. The resultant effective temperature of Betelgeuse, 3611+-38K, is consistent with those measured with spectro-interferometry by Ohnaka et al. (2011) and Arroyo-Torres et al. (2013), 3690+-54 and 3620+-137K, respectively. Moreover, our effective temperatures and luminosities show good agreements with the Geneva’s stellar evolution model.
description: {"references": ["Taniguchi D., et al., 2021, MNRAS, 502, 4210", "Levesque E. M., et al. 2005, ApJ, 628, 973", "Kervella P., et al., 2009, A&A, 504, 115", "Levesque E. M., et al. 2005, ApJ, 645, 1102", "Davies B., et al., 2013, ApJ, 767, 3", "Jian M., et al., 2020, MNRAS, 494, 1724", "Taniguchi D., et al., 2018, MNRAS, 473, 4993", "Ikeda Y., et al., 2016, SPIE, 99085Z", "Otsubo S., et al., 2016, SPIE, 990879", "Ohnaka K., et al., 2011, A&A, 529, A163", "Arroyo-Torres B., et al., 2013, A&A, 554, A76", "Carr J. S., et al., 2000, ApJ, 530, 307", "Haubois X., et al., 2009, A&A, 508, 923", "Davies B., et al., 2010, MNRAS, 407, 1203", "Ekstr\u00f6m S., et al., 2012, A&A, 537, A146"]}
Saturation of $E_T/N_{ch}$ and Freeze-Out Criteria in Heavy-Ion Collisions
Creators: name: Cleymans, J.
name: Sahoo, R.
name: Mahapatra, D. P.
name: Srivastava, D K
name: Wheaton, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The pseudorapidity densities of transverse energy, the charged particle multiplicity and their ratios, $E_T/N_{ch}$, are estimated at mid-rapidity, in a statistical-thermal model based on chemical freeze-out criteria, for a wide range of energies from GSI-AGS-SPS to RHIC. It has been observed that in nucleus-nucleus collisions, $E_T/N_{ch}$ increases rapidly with beam energy and remains approximately constant at about a value of 800 MeV for beam energies from SPS to RHIC. $E_T/N_{ch}$ has been observed to be almost independent of centrality at all measured energies. The statistical-thermal model describes the energy dependence as well as the centrality independence, qualitatively well. The values of $E_T/N_{ch}$ are related to the chemical freeze-out criterium, $E/N \approx 1 GeV$ valid for primordial hadrons. We have studied the variation of the average mass $(), N_{decays}/N_{primordial}, N_{ch}/N_{decays}$ and $E_T/N_{ch}$ with $\sqrt{s_{NN}}$ for all freeze-out criteria discussed in literature. These observables show saturation around SPS and higher $\sqrt{s_{NN}}$, like the chemical freeze-out temperature ($T_{ch}$).
description: 7 pages, 3 figures, ORAL presentation in 20th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2008 (QM 2008), Jaipur, India, 4-10 Feb. 2008. To appear in Journal of Phys. G: Nucl. Part. Phys
Exploring the Origin of Supermassive Black Holes with Coherent Neutrino Scattering
Creators: name: Munoz, Victor
name: Takhistov, Volodymyr
name: Witte, Samuel J.
name: Fuller, George M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Collapsing supermassive stars ($M \gtrsim 3 \times 10^4 M_{\odot}$) at high redshifts can naturally provide seeds and explain the origin of the supermassive black holes observed in the centers of nearly all galaxies. During the collapse of supermassive stars, a burst of non-thermal neutrinos is generated with a luminosity that could greatly exceed that of a conventional core collapse supernova explosion. In this work, we investigate the extent to which the neutrinos produced in these explosions can be observed via coherent elastic neutrino-nucleus scattering (CE$ν$NS). Large scale direct dark matter detection experiments provide particularly favorable targets. We find that upcoming $\mathcal{O}(100)$ tonne-scale experiments will be sensitive to the collapse of individual supermassive stars at distances as large as $\mathcal{O}(10)$ Mpc.
description: 9 pages, 5 figures, 2 tables; v2: matches published version
Hoerle, F. W
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Memel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Production and polarization of direct $J/ψ$ to ${\mathcal O}(α_s^3)$ in the improved color evaporation model in collinear factorization
Creators: name: Cheung, Vincent
name: Vogt, Ramona
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the production and polarization of direct $J/ψ$ in the improved color evaporation model at $\mathcal{O}(α_s^3)$ in the collinear factorization approach. We present the first calculation of polarization parameters $λ_\vartheta$, $λ_ϕ$, and $λ_{\vartheta ϕ}$ in the helicity and the Collins-Soper frames, as well as the frame-invariant polarization parameter $\tildeλ$ as a function of transverse momentum. We find agreement with both $J/ψ$ cross sections and the invariant polarization parameters at small and moderate $p_T$.
Canals, Abel, & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Toulouse
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Horstmann, G. J. & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Lübeck
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Chicherio, Fratelli
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1834

description: Ort: Bellinzona
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Quantization of four-dimensional Abelian gravity
Creators: name: Broda, Bogusław
name: Bronowski, Piotr
name: Ostrowski, Marcin
name: Szanecki, Michał
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An abelian version of standard general relativity in the Cartan-Palatini gauge-like formulation in four dimensions has been introduced. Traditional canonical analysis utilizing similarities to the akin Husain-Kuchar SU(2) version of gravity has been performed. The model has been next quantized in the canonical path-integral Faddeev-Popov formalism yielding abelian BF theory.
description: Minor changes, additional symmetry discussed. 5 pages, 2 columns, REVTeX 4
A politics of memory : cognitive strategies of five women writing in Canada
Creators: name: Thompson, Dawn
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation attempts to develop a counter—memory, a cognitive strategy that provides an alternative to the most prevalent mode of political action by members of minority or subaltern groups: identity politics. It begins with Teresa de Lauretis’ semiotics of subjectivity, which posits the human subject as a shifting series of positions or habits formed through semiotic and cognitive “mapping” of, and being “mapped” by, its environment. De Lauretis maintains that the subject can transform social reality through an “inventive” mode of mapping. The first chapter of this study is a semiotic analysis of the memory system at work in Nicole Brossard’s Picture Theory. It argues that Brossard’s use of holographic technology is an invention that attempts to alter women’s maps of social reality. Quantum physicist David Bohm has also employed the hologram as a theoretical model. By merging Brossard’s holographic memory with Bohm’s theory of a “holomovement,” this study develops an epistemological strategy that alters not only the map of reality, but also the dominant representational mode of cognitive mapping. This enquiry then moves on to other novels written in Canada which have a strong political impetus based on gender, nationality, ethnicity, race and/or class: Margaret Atwood’s Surfacing, Marlene Nourbese Philip’s Looking for Livingstone, Beatrice Culleton’s In Search of April Raintree and Régine Robin’s La Ouébécoite. Through textual analysis, it attempts to establish that although these novels make no mention of holography, each of them employs a memory system that inscribes itself holographically. That holographic memory provides an alternative political strategy to the “identity politics” at work in each of these texts. Each text, in turn, like a fragment of a hologram, adds another structural and political dimension to the hologram. The processual structure of the holographic theory provides a ground for alliances between different political agendas while resisting closure. As an epistemological strategy, it promises to alter both the method and the ground of knowledge.
Estimation of Gaussian random displacement using non-Gaussian states
Creators: name: Hanamura, Fumiya
name: Asavanant, Warit
name: Fukui, Kosuke
name: Konno, Shunya
name: Furusawa, Akira
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In continuous-variable quantum information processing, quantum error correction of Gaussian errors requires simultaneous estimation of both quadrature components of displacements on phase space. However, quadrature operators $x$ and $p$ are non-commutative conjugate observables, whose simultaneous measurement is prohibited by the uncertainty principle. Gottesman-Kitaev-Preskill (GKP) error correction deals with this problem using complex non-Gaussian states called GKP states. On the other hand, simultaneous estimation of displacement using experimentally feasible non-Gaussian states has not been well studied. In this paper, we consider a multi-parameter estimation problem of displacements assuming an isotropic Gaussian prior distribution and allowing post-selection of measurement outcomes. We derive a lower bound for the estimation error when only Gaussian operations are used, and show that even simple non-Gaussian states such as single-photon states can beat this bound. Based on Ghosh's bound, we also obtain a lower bound for the estimation error when the maximum photon number of the input state is given. Our results reveal the role of non-Gaussianity in the estimation of displacements, and pave the way toward the error correction of Gaussian errors using experimentally feasible non-Gaussian states.
description: 14 pages, 8 figures
A magnetic liquid deformable mirror for high stroke and low order axially symmetrical aberrations
Creators: name: Brousseau, Denis
name: Borra, Ermanno F.
name: Ruel, Hubert-Jean
name: Parent, Jocelyn
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: Astrophysics (astro-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We present a new class of magnetically shaped deformable liquid mirrors made of a magnetic liquid (ferrofluid). Deformable liquid mirrors offer advantages with respect to deformable solid mirrors: large deformations, low costs and the possibility of very large mirrors with added aberration control. They have some disadvantages (e.g. slower response time). We made and tested a deformable mirror, producing axially symmetrical wavefront aberrations by applying electric currents to 5 concentric coils made of copper wire wound on aluminum cylinders. Each of these coils generates a magnetic field which combines to deform the surface of a ferrofluid to the desired shape. We have carried out laboratory tests on a 5 cm diameter prototype mirror and demonstrated defocus as well as Seidel and Zernike spherical aberrations having amplitudes up to 20 microns, which was the limiting measurable amplitude of our equipment
description: To appear in Optics Express
Searching for x-ray transit of exoplanet with the Chandra Satellite
Creators: name: Umetani, Tsubasa
Publisher: name: Zenodo
Year: 2021
Subjects: Stellar systems, clusters, and associations

description: To study exoplanet habitability, it is crucial to characterize planetary atmospheres. Observing transit-induced dimming of exoplanets in X-rays offers an unique tool (Perryman 2018). We have conducted a systematic study to search for possible transits of stars hosting exoplanets using Chandra data. In total, 53 stars are investigated and as a result, we found a significant transit signature from HD18733b which has been already reported by Poppenhaeger et al. (2013, ApJ, 773, 62), Although the other data show no significant transit feature. We found that even if we could observe transit durations in X-rays, it would be difficult to distinguish between variations caused by planets and those caused by flares. We report on our systematic study.