cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Γεωφυσική διασκόπηση στο ρωμαϊκό θέατρο των Απτέρων, Χανίων
Creators: name: Παγανης Αντωνιος
Publisher: name: Technical University of Crete
Year: 2015

description: Η παρούσα διπλωματική εργασία έγινε σε συνεργασία με την Εφορεία Αρχαιοτήτων Χανίων. Αντικείμενο της εργασίας είναι η παρουσίαση και ερμηνεία των αποτελεσμάτων της γεωφυσικής έρευνας που πραγματοποιήθηκε στην περιοχή γύρω από το ρωμαϊκό θέατρο των Αρχαίων Απτέρων, Χανίων. Σκοπός της έρευνας ήταν ο εντοπισμός πιθανών θέσεων θαμμένων αρχαιοτήτων γύρω από το θέατρο, όπως το αρχαίο πλακόστρωτο μονοπάτι που συνέδεε την πόλη με αυτό, καθώς και την λιθόχτιστη τοιχοδομή που το περιέβαλλε. Χρησιμοποιήθηκαν οι μέθοδοι γεωραντάρ, κινούμενου πομπού-δέκτη, μαγνητικής βαθμίδας και ηλεκτρικής τομογραφίας σε πέντε διαφορετικούς κάνναβους μετρήσεων.
Η επεξεργασία των δεδομένων γεωραντάρ έγινε στο λογισμικό GPR-PRO 14 και περιλάμβανε: εφαρμογή φίλτρων και ενίσχυσης, υπολογισμό μιγαδικών χαρακτηριστικών (attributes), κατασκευή οριζοντίων τομών (slice) σε διαδοχικά βάθη, καθώς και τρισδιάστατη απεικόνιση στο λογισμικό Τ3D. Για την επεξεργασία των μαγνητικών και ηλεκτρομαγνητικών δεδομένων χρησιμοποιήθηκε το πρόγραμμα Transform, όπου έγινε εφαρμογή φίλτρου εξομάλυνσης. Η επεξεργασία των ηλεκτρικών τομογραφιών έγινε στο λογισμικό Res2DInv. Συνολικά καλύφθηκε έκταση 2720 m2 με τη μέθοδο κινούμενου πομπού-δέκτη,  2128 m2 με τη μέθοδο γεωραντάρ, 1140 m2 με τη μέθοδο μαγνητικής βαθμίδας, καθώς και 2 ηλεκτρικές τομές.
Μετά τη συνδυαστική ερμηνεία των αποτελεσμάτων, εντοπίστηκε η θαμμένη λιθόχτιστη τοιχοδομή που περιβάλλει το θέατρο, στον κάνναβο βόρεια του θεάτρου και πιθανόν και στα ανατολικά. Επιτεύχθηκε επίσης ο εντοπισμός πιθανών θαμμένων τοίχων καθώς και άλλων ανθρωπογενών δομών στις υπόλοιπες περιοχές,. Τέλος, προτείνονται νέες περιοχές για περαιτέρω γεωφυσική έρευνα εντός του αρχαιολογικού χώρου.
Schwab, Hans-Rüdiger: Johannes Reuchlin - Deutschlands erster Humanist. Ein biographisches Lesebuch
Creators: name: Dall’Asta, Matthias
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Schwab, Hans-Rüdiger: Johannes Reuchlin - Deutschlands erster Humanist. Ein biographisches Lesebuch. München: Deutscher Taschenbuch Verlag 1998. 304 Seiten. 19,90 DM (dtv 12609; ISBN 3-123-1260-4).
description: Forum Classicum, Nr. 1 (1999): Forum Classicum
Quality of Dried Fruits: A Survey of Dried Apricots, Prunes, Raisins, and Figs in Retail Markets
Creators: name: Couey, H. Melvin
name: Couey, H. Melvin
Publisher: name: Unknown
Year: 1961
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpt from the report Summary: Consumer packages of dried apricots, prunes, figs, and raisins were collected in retail stores and compared with samples that were obtained from packers and held under desirable storage conditions. The comparisons were made to determine the types and extent of deterioration of quality during marketing. Seven percent of the apricot samples obtained in retail stores, 11 percent of the prune samples, 13 percent of the raisin samples, and 17 percent of the fig samples showed that they had reached an undesirable quality level. The most prevalent type of deterioration was darkening of the flesh and loss of flavor. Aging caused most of the deterioration observed. Inadequate packaging and high store temperatures also contributed to deterioration.
GlyphNet: Homoglyph domains dataset and detection using attention-based Convolutional Neural Networks
Creators: name: Gupta, Akshat
name: Tomar, Laxman Singh
name: Garg, Ridhima
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Cyber attacks deceive machines into believing something that does not exist in the first place. However, there are some to which even humans fall prey. One such famous attack that attackers have used over the years to exploit the vulnerability of vision is known to be a Homoglyph attack. It employs a primary yet effective mechanism to create illegitimate domains that are hard to differentiate from legit ones. Moreover, as the difference is pretty indistinguishable for a user to notice, they cannot stop themselves from clicking on these homoglyph domain names. In many cases, that results in either information theft or malware attack on their systems. Existing approaches use simple, string-based comparison techniques applied in primary language-based tasks. Although they are impactful to some extent, they usually fail because they are not robust to different types of homoglyphs and are computationally not feasible because of their time requirement proportional to the string length. Similarly, neural network-based approaches are employed to determine real domain strings from fake ones. Nevertheless, the problem with both methods is that they require paired sequences of real and fake domain strings to work with, which is often not the case in the real world, as the attacker only sends the illegitimate or homoglyph domain to the vulnerable user. Therefore, existing approaches are not suitable for practical scenarios in the real world. In our work, we created GlyphNet, an image dataset that contains 4M domains, both real and homoglyphs. Additionally, we introduce a baseline method for a homoglyph attack detection system using an attention-based convolutional Neural Network. We show that our model can reach state-of-the-art accuracy in detecting homoglyph attacks with a 0.93 AUC on our dataset.
Fink, Gerhard / Maier, Friedrich: Ordo. Modellgrammatik Latein
Creators: name: Esders, Bettina
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Fink, Gerhard / Maier, Friedrich: Ordo. Modellgrammatik Latein. Oldenbourg Verlag, München: Oldenbourg 1998. 103 S., 19,80 DM (ISBN 3-486-87691-0).
description: Forum Classicum, Nr. 1 (1999): Forum Classicum
Tentative Evidence for Transit Timing Variations of WASP-161b
Creators: name: Yang, Fan
name: Chary, Ranga-Ram
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report on the detection of transit timing variations (TTV) of WASP-161b by using the combination of TESS data and archival data. The midpoint of the transits in TESS data are offset by $\sim$67 minutes in Jan. 2019, and $\sim$203 minutes in Jan. 2021, based on the ephemeris published in previous work. We are able to reproduce the transit timings from the archival light curve (SSO-Europa; Jan. 2018) and find SSO-Europa timing is consistent with the published ephemeris under a constant period assumption. Conversely, we find that the SSO-Europa transit midpoint indicates a 6.62-minute variation at 4.40 $σ$ compared to the prediction obtained from TESS timings, and a constant orbit period assumption. The TTVs could be modeled with a quadratic function, yielding a constant period change. The period derivative $\dot{P}$ is -1.16$\times$10$^{-7}\pm$2.25$\times$10$^{-8}$ days per day (or $-3.65$ s/year), derived from SSO-Europa and TESS timing. Different scenarios, including a decaying period and apsidal precession can potentially explain these TTVs but they both introduce certain inconsistencies. We have obtained CHEOPS observations for two transits in Jan. 2022 to distinguish between different TTV scenarios. We expect the timing to vary by 5 minutes, compared to the timing predicted from SSO-Europa and TESS with a constant period assumption.
description: Accepted for publication (AJ)
Evaluating Test Consequences Based on ESL Students’ Perceptions: An Appraisal Analysis
Creators: name: Lee, Elizabeth
Publisher: name: Columbia University
Year: 2020
Subjects: Applied linguistics
English language--Study and teaching--Foreign speakers
Reading--Ability testing
Educational tests and measurements--Social aspects
Discourse analysis

description: Ensuring that test-score use brings about socially positive consequences for test-takers is an important aspect of test validation. While many studies use an inductive approach to evaluate test consequences, few studies have implemented Appraisal analysis. To that end, this case study investigated the test consequences of an English reading placement test administered at a large American university. In this study, English as a second language (ESL) students (n=8) who took the placement test and an ESL reading course were interviewed; an Appraisal analysis was conducted to identify the students’ positive and/or negative perceptions toward the placement test and reading course. Using an argument-based approach to validity framework, the findings were treated as evidence to evaluate the test consequences of the placement test. The results showed that, while taking the ESL course helped students gain some valuable academic reading skills, students felt that test anxiety, fatigue, and verbally demanding questions hindered their test performances. Understanding what students experienced while taking the test can help test-developers devise solutions that will improve the test-taking situation for future test-takers. This study also illustrates how an Appraisal analysis of test-takers’ discourses can provide a systematic and fine-grained approach to evaluating positive and/or negative test consequences.
NAVIGIUM V6, Computer-Training Latein + NAVIGIUM BELLUM GALLICUM für Windows, hrsg. von Karl und Philipp Niederau
Creators: name: Kipf, Stefan
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: NAVIGIUM V6, Computer-Training Latein + NAVIGIUM BELLUM GALLICUM für Windows, hrsg. von Karl und Philipp Niederau, CD-Rom, erforderlich PC mit Windows 3.1 oder Windows 95 bzw. 98, ISBN 3-9805357-3-8, DM 149,-.
description: Forum Classicum, Nr. 1 (1999): Forum Classicum
Removal of two large scale Cosmic Microwave Background anomalies after subtraction of the Integrated Sachs Wolfe effect
Creators: name: Rassat, A.
name: Starck, J. -L.
name: Dupe, F. -X.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Though debated, the existence of claimed large-scale anomalies in the CMB is not totally dismissed. In parallel to the debate over their statistical significance, recent work focussed on masks and secondary anisotropies as potential sources of these anomalies. In this work we investigate simultaneously the impact of the method used to account for masked regions and the impact of the ISW effect, which is the large-scale secondary anisotropy most likely to affect the CMB anomalies. In this sense, our work is an update of both Francis & Peacock 2010 and Kim et al. 2012. Our aim is to identify trends in CMB data with different mask treatments. We reconstruct the ISW signal due to 2MASS and NVSS galaxies. We account for missing data using the sparse inpainting technique of Abrial et al. 2008 and sparse inpainting of the CMB, LSS and ISW and find that it constitutes a bias-free reconstruction method suitable to study large-scale statistical isotropy and the ISW effect. We focus on three large-scale CMB anomalies: the low quadrupole, the quad/oct alignment, and the octopole planarity. After sparse inpainting, the low quadrupole becomes more anomalous, whilst the quad/oct alignment becomes less anomalous. The significance of the low quadrupole is unchanged after subtraction of the ISW effect, while the trend is that the quad/oct alignment has reduced significance, yet other hypotheses remain possible as well (e.g. exotic physics). Our results also suggest that both of these anomalies may be due to the quadrupole alone. The octopole planarity significance is also reduced after inpainting and after ISW subtraction, however, we do not find that it was very anomalous to start with. In the spirit of reproducible research, we make all codes and resulting products which constitute main results of this paper public here: http://www.cosmostat.org/anomaliesCMB.html.
description: Updated Figs 4-6, A.5, and Tables 2-6. Main conclusions unchanged, except low quadrupole is still low after ISW subtraction. Accepted for publication in A&A. In the spirit of reproducible research, all codes and resulting products which constitute main results of this paper are made public here: http://www.cosmostat.org/anomaliesCMB.html. Table 6 is the overall summary. Astro-ph abstract abridged
Study of kinematic dependence of azimuthal anisotropies in p/d/3He+Au collisions at PHENIX
Creators: name: Lim, Sanghoon
Publisher: name: Zenodo
Year: 2021
Subjects: ismd21
phenix
flow
p+au
d+au
3he+au
small systems
correlations
azimuthal
anisotropy

description: Poster presented at the International Symposium on Multiparticle Dynamics 2021 conference
Szilard engines and information-based work extraction for active systems
Creators: name: Malgaretti, P.
name: Stark, H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The out of equilibrium nature of active systems can be exploited for the design of information-based engines. We design two types of an active Szilard engine that use a Maxwell daemon to extract work from an active bath composed of non-interacting Active Brownian Particles (ABPs). The two engines exploit either the quasi-static active pressure of ABPs or the long correlation time of their velocities. For both engines the Landauer principle can be violated so that larger work can be extracted compared to conventional Szilard engines operating in quasi thermal equilibrium. For both of our engines,we identify the optimal regimes at which the work extracted and the efficiency are maximized. Finally, we we discuss them in the context of synthetic and biological active systems.
A Quantum-Mechanical Mechanism for Reducing the Cosmological Constant
Creators: name: Kaloper, Nemanja
name: Westphal, Alexander
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We exhibit a mechanism which dynamically adjusts cosmological constant toward $0^+$. The adjustment is quantum-mechanical, discharging cosmological constant in random discrete steps. It renders de Sitter space unstable, and triggers its decay toward Minkowski. Since the instability dynamically stops at $Λ= 0$, the evolution favors the terminal Minkowski space without a need for anthropics. The mechanism works for any QFT coupled to gravity.
description: 10 pages LaTeX, 2 figures; v2: additional comments, preprint number added
Zum Plan der Reihengräber von Denning bei München
Creators: name: Reinecke, Paul
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 18, Nr. 3 (1934)
title: Οικονομοτεχνική μελέτη εφαρμογής της μεθόδου διαδοχικών κοπών και λιθογομώσεων για την υπόγεια εκμετάλλευση κοιτάσματος μικτών θειούχων
Creators: name: Πρωτογερος Δημητριος
Publisher: name: Technical University of Crete
Year: 2015

description: Η παρούσα διπλωματική εργασία έχει ως στόχο την εκπόνηση οικονομοτεχνικής μελέτης στην οποία υπολογίζονται τα οικονομικά οφέλη που προκύπτουν από την εκμετάλλευση κοιτάσματος μικτών θειούχων. Συγκεκριμένα πρόκειται για το κοίτασμα της Ολυμπιάδας Χαλκιδικής το οποίο προβλέπεται να εκμεταλλευτεί με εφαρμογή υπόγειας μεθόδου από την Ελληνικός Χρυσός Α.Ε. η οποία λειτουργεί ως θυγατρική της καναδικής εταιρίας Eldorado Gold.
Στο περιεχόμενο της εργασίας γίνεται ανάλυση του μηχανολογικού εξοπλισμού, της διάτρησης-ανατίναξης, της υποστήριξης, του προσωπικού, του φωτισμού και του αερισμού από την οποία προκύπτουν τα απαραίτητα στοιχεία για τον υπολογισμό του μοναδιαίου κόστους. Κάνοντας μια αναδρομή στις επιμέρους ενότητες, θα διαπιστωθεί ότι οι περισσότεροι τύποι που εφαρμόστηκαν για την παραγωγή των επιθυμητών αποτελεσμάτων είναι εμπειρικοί, εκτός εκείνων που συμπεριλήφθηκαν στον τρόπο υπολογισμού των φορτηγών, φωτιστικών σωμάτων και ανεμιστήρων αερισμού. Τα οικονομικά δεδομένα που χρησιμοποιήθηκαν, τα οποία σε κάποιες περιπτώσεις αντιπροσωπεύουν ενδεικτικές τιμές, καθώς και τα τεχνικά χαρακτηριστικά του εξοπλισμού επιβεβαιώθηκαν έπειτα από προσωπική έρευνα και συνεννόηση με την εταιρία. Επίσης, από τα οικονομικά και παραγωγικά δεδομένα επιλέχθηκε το δυσμενέστερο σενάριο, δηλαδή το σενάριο που θα προσφέρει μικρότερο κέρδος στην επιχείρηση. Σημαντικό είναι να αναφερθεί ότι το μεγαλύτερο μέρος επεξεργασίας των στοιχειών έγινε σε περιβάλλον Excel για την  απλούστευση των μαθηματικών υπολογισμών ενώ η σχεδίαση των τομών της προβλεπόμενης μεθόδου εκμετάλλευσης πραγματοποιήθηκε σε περιβάλλον AutoCAD.
Το συνολικό κόστος που προκύπτει στο τέλος της εργασίας αφορά μόνο τη λειτουργία του υπόγειου ορυχείου, συνεπώς δεν έχει ληφθεί υπόψη το κόστος των διεργασιών της επιφάνειας όπως είναι το κόστος εμπλουτισμού, μεταλλουργίας, και μεταφοράς.
title: Αναγνώριση μοντέλων κίνησης σε σμήνος ψαριών
title: Determination of motion models in fish school
Creators: name: Ντοκο Ανεζα
Publisher: name: Technical University of Crete
Year: 2018

description: Αντικείμενο της παρούσας διπλωματικής είναι η υλοποίηση, η επιβεβαίωση και η αξιολόγηση ενός συστήματος επιτήρησης ψαριών σε ιχθυοκλωβούς η οποία στοχεύει στην ανάλυση της συμπεριφοράς κοπαδιού από ψάρια ή μεμονωμένων ατόμων αυτού. Μια τέτοια εφαρμογή αποδεικνύεται ιδιαίτερα χρήσιμη για την καθοδήγηση της τροφοδοσίας και τον έλεγχο ομαλής ανάπτυξης των ψαριών στον αναπτυσσόμενο κλάδο της ιχθυοκαλλιέργειας. Ένα κρίσιμο ζήτημα που χρειάστηκε να αντιμετωπίσουμε ήταν η  βελτίωση των υποθαλάσσιων εικόνων στα βίντεο καθώς χαρακτηρίζονται από έντονο θόρυβο, ξαφνικές αλλαγές στη φωτεινότητα και θολό περιβάλλον. Έπειτα, βασικά βήματα στην υλοποίησή μας απετέλεσαν η επιλογή των κατάλληλων αλγορίθμων για την ανίχνευση, παρακολούθηση και μοντελοποίηση της τροχιάς των ψαριών. Βασικό εργαλείο για την υλοποίηση των παραπάνω ήταν η επιλογή του Kalman φίλτρου για την πρόβλεψη και εκτίμηση της κίνησης των ψαριών. Προβλήματα τα οποία παρουσιάστηκαν επιλύθηκαν σε ένα σημαντικό βαθμό μέσω  της κατάλληλης επεξεργασίας των τροχιών μετά την εξαγωγή τους. Για την τελική ανάλυση της συμπεριφοράς των ψαριών, οι τροχιές μοντελοποιήθηκαν σε ομαλές και μη, με βάση την ομοιομορφία στην κλίση της τροχιάς. Στα πλεονεκτήματα του συστήματός μας μπορεί να καταγραφεί ότι, μέσω μελλοντικής βελτίωσής του, μπορεί να οδηγήσει σε ένα πλήρως αυτοματοποιημένο σύστημα με στόχο την εφαρμογή του σε ρεαλιστικές συνθήκες και πραγματικό χρόνο
description: The objective of the current thesis is the implementation, testing and validation of a video-surveillance system in fish farms that can be used in the future to analyze fish school behavior or their individual behavior. Such an application proves to be extremely useful in guiding the feeding procedure and inspect the quality of growth of fish populations in the expanding industry of fish farming. A crucial issue that we faced was the image enhancement of underwater images in videos, as they are characterized of intense noise, sudden light changes and blurring environment. Afterwards, the basic steps of our implementation involved the appropriate selection and combination of algorithms for detection, tracking and trajectory modeling of fish movements. The use of the Kalman Filter was important for the prediction and correction of fish motion. We further processed the trajectories after their extraction based on important observations on real videos. Finally, for the behavior analysis of fish we modeled and grouped trajectories into normal and abnormal classes, based on the uniformity of the trajectory slopes. As for the advantages of our system, we could say that future improvement is needed, but there is good indication that it can lead to a fully automatic system in order to be used under realistic conditions for real-time monitoring and interventions.
Wandnischen in spätrömischen Erdgräbern zu Köln
Creators: name: Haberey, Waldemar
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 18, Nr. 4 (1934)
Descoperiri paleolitice in preajma Bucurestilor, Săpăturile de la Vidra, raport preliminar
Creators: name: Reinecke, Paul
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: Rezension zu: Dinu V. Rosetti, Descoperiri paleolitice in preajma Bucurestilor, Săpăturile de la Vidra, raport preliminar. Publicaţiile Muzeului Municipiului Bucureşti Nr. 1. Bukarest 1934. 60 S., 50 Textabb., 5 Tafeln.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 18, Nr. 4 (1934)
Sarah Dromgoole, The Protection of Underwater Culture Heritage, National Perspectives in Light of the UNESCO Convention 2001 [Rez.]
Creators: name: Froehlich, Annette
Publisher: name: Kunstrechtsspiegel
Year: 2017

description: Rezension zu:

Sarah Dromgoole, The Protection of Underwater Culture Heritage, National Perspectives in Light of the UNESCO Convention 2001, Martinus Nijhoff Publishers, Leiden/Bosten, 2006, 2. Auflage, S. 420.
description: Kunstrechtsspiegel, Nr. 1 (2010): Kunstrechtsspiegel
Aus alt mach neu: Die Neukonzeption des Magister-Nebenfach-Studienganges "Griechisch" an der Ludwig-Maximilians-Universität München
Creators: name: Möllendorff, Peter Von
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: [nicht vorhanden / not available]
description: Pegasus-Onlinezeitschrift, Bd. 1 (2000): Pegasus-Onlinezeitschrift
Non (solum) scholae, sed (etiam) vitae - Latein und Griechisch zwischen Schule und Universität
Creators: name: Linke, Bernd
name: Lozar, Angelika
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: [nicht vorhanden / not available]
description: Pegasus-Onlinezeitschrift, Bd. 2 (2001): Pegasus-Onlinezeitschrift
Evidence for a Bose-Einstein condensate of excitons
Creators: name: Alloing, Mathieu
name: Beian, Mussie
name: Lewenstein, Maciej
name: Fuster, David
name: Gonzalez, Yolanda
name: Gonzalez, Luisa
name: Combescot, Roland
name: Combescot, Monique
name: Dubin, Francois
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The demonstration of Bose-Einstein condensation in atomic gases at micro-Kelvin temperatures is a striking landmark while its evidence for semiconductor excitons still is a long-awaited milestone. This situation was not foreseen because excitons are light-mass boson-like particles with a condensation expected to occur around a few Kelvins. An explanation can be found in the underlying fermionic nature of excitons which rules their condensation. Precisely, it was recently predicted that, at accessible experimental conditions, the exciton condensate shall be "gray" with a dominant dark part coherently coupled to a weak bright component through fermion exchanges. This counter-intuitive quantum condensation, since excitons are mostly known for their optical activity, directly follows from the excitons internal structure which has an optically inactive, i.e., dark, ground state. Here, we report compelling evidence for such a "gray" condensate. We use an all-optical approach in order to produce microscopic traps which confine a dense exciton gas that yet exhibits an anomalously weak photo-emission at sub-Kelvin temperatures. This first fingerprint for a "gray" condensate is then confirmed by the macroscopic spatial coherence and the linear polarization of the weak excitonic photoluminescence emitted from the trap, as theoretically predicted.
description: 23 pages, 9 figures, revised version, Europhys. Lett. 107, 10012 (2014)
Accurate CMB covariance matrices: exact calculation and approximations
Creators: name: Camphuis, Étienne
name: Benabed, Karim
name: Galli, Silvia
name: Hivon, Éric
name: Lilley, Marc
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Accurate covariance matrices are required for a reliable estimation of cosmological parameters from pseudo-power spectrum estimators. In this work, we focus on the analytical calculation of covariance matrices. We consider the case of observations of the Cosmic Microwave Background in temperature and polarization on a small footprint such as in the SPT-3G experiment, which observes 4% of the sky. Power spectra evaluated on small footprints are expected to have large correlations between modes, and these need to be accurately modelled. We present, for the first time, an algorithm that allows an efficient (but computationally expensive) exact calculation of analytic covariance matrices. Using it as our reference, we test the accuracy of existing fast approximations of the covariance matrix. We find that, when the power spectrum is binned in wide bandpowers, current approaches are correct up to the 5% level on the SPT-3G small sky footprint. Furthermore, we propose a new approximation which improves over the previous ones reaching a precision of 1% in the wide bandpowers case and generally more than 4 times more accurate than current approaches. Finally, we derive the covariance matrices for mask-corrected power spectra estimated by the PolSpice code. In particular, we include, in the case of a small sky fraction, the effect of the apodization of the large scale modes. While we considered the specific case of the CMB, our results are applicable to any other cosmological probe which requires the calculation of pseudo-power spectrum covariance matrices.
description: 20 pages, 14 figures, 1 table
Pueris ... eligendus est magister in ambobus, in scientia ac moribus – Zur Person des Lehrers in Vinzenz‘ von Beauvais Fürstenspiegel. De eruditione filiorum nobilium
Creators: name: Lozar, Angelika
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: [nicht vorhanden / not available]
description: Pegasus-Onlinezeitschrift, Bd. 1 (2002): Pegasus-Onlinezeitschrift
The Meta-Support of Data Services: A discussion session on strategies for managing our workload with student labor
Creators: name: Lackie, Paula
Publisher: name: Zenodo
Year: 2021

description: We were happy to see the theme "Partnerships and Collaborations" because this proposal is about working in community to discuss how we may sustainably manage student labor.* (*"student" is used broadly; any novice hired to support our work in hands-on technical data services.) While data support has a long tradition, the sexiness of Data Science has raised awareness of the power in data and we now have both more customers looking for sophisticated solutions as well as more variably-skilled students seeking practical experience. When we take on interns or student workers, we are training the next generation of data professionals, but how can we keep up with their training/mentoring & also assure the quality of our services? (especially on students' schedules!?) We seek collaborators to identify commonalities in the technical data support needs and services among our varied institutions. Further, we are interested in discussing our models for managing student technical support staff; sharing successes and challenges. This may lead us to a community/network model (ie Data Carpentries) to support cross-institutional mentoring and managers wrangling iterations of novices in the service of their data support mission. Potential discussion areas: -Who is the intended recipient of our services? Who else might need help? How/how well are we currently satisfying these needs? Can they be categorized generically? -How are we distributing the workload? How are we finding suitable student staff (both literally and figuratively)? How are we managing them, their training, and their projects? -Is/how is this knowledge or set of practices captured for future temporary data support staff (students)? -Is it reasonable/useful to construct a community of practice among supervisors? Can it be self sustaining? Panelists: -Paula Lackie (chair) -Carleton College -Deborah Wiltshire -UK Data Archive -Stephanie Labou -UCSD
Bestimmung des Schwierigkeitsgrades von lateinischen Klassenarbeiten
Creators: name: Bayer, Karl
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: Die verlässliche Bestimmung des Schwierigkeitsgrades von Klassenarbeiten erweist sich immer wieder als nicht zu unterschätzendes Problem. Karl Bayer, Nestor der Didaktik des altsprachlichen Unterrichts in Deutschland, stellt in seinem Artikel nicht nur grundsätzliche didaktische und methodische Überlegungen zu dieser zentralen Frage des Latein- und Griechischunterrichts an, sondern präsentiert eine Methode, die auf der Grundlage einer systematischen Analyse eine realistische Schwierigkeitsbestimmung unterschiedlichster Textarten erlaubt. Zusätzliche Bedeutung für die Unterrichtspraxis gewinnt der Artikel durch zwei anschauliche Anwendungsbeispiele.
description: Pegasus-Onlinezeitschrift, Bd. 3, Nr. 2 (2003): Pegasus-Onlinezeitschrift
Axial-vector transition form factors of the singly heavy baryons
Creators: name: Suh, Jung-Min
name: Kim, Hyun-Chul
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the axial-vector transition form factors of the lowest-lying singly heavy baryons within the framework of the chiral quark-soliton model. We consider the linear $m_{\mathrm{s}}$ corrections, dealing with the strange current quark mass $m_{\mathrm{s}}$ as a small perturbation. Since we have various relations between different transitions because of isospin symmetry and flavor SU(3) symmetry breaking, only two axial-vector transition form factors are independent. We present the numerical results for these form factors. The effects of the flavor SU(3) symmetry breaking turn out tiny, so we neglect them. We also compute the decay rates for several strong decays of the singly heavy baryons and compare the results with the experimental data and those from other models. While the results for the $Σ_c\to Λ_c^++π$ and $Σ_c^*\to Λ_c^++π$ decays are slightly overestimated in comparison with the corresponding experimental data, those for the $Ξ_c^*\to Ξ_c+π$ are in remarkable agreement with the data.
description: 20 pages, 3 figures
An information-theoretic evolutionary algorithm
Creators: name: Berny, Arnaud
Publisher: name: arXiv
Year: 2023
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We propose a novel evolutionary algorithm on bit vectors which derives from the principles of information theory. The information-theoretic evolutionary algorithm (it-EA) iteratively updates a search distribution with two parameters, the center, that is the bit vector at which standard bit mutation is applied, and the mutation rate. The mutation rate is updated by means of information-geometric optimization and the center is updated by means of a maximum likelihood principle. Standard elitist and non elitist updates of the center are also considered. Experiments illustrate the dynamics of the mutation rate and the influence of hyperparameters. In an empirical runtime analysis, on OneMax and LeadingOnes, the elitist and non elitist it-EAs obtain promising results.
description: A four-page version of this work will appear in Genetic and Evolutionary Computation Conference Companion (GECCO '23 Companion)
Galba - ein Opfer der Massen (Tac. hist. I 4-49). Ein Lehrstück über die Macht von Stimmungen, Gerüchten und erfolgreiche Massenmanipulation
Creators: name: Schult, Ralf
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: Für die Charakterisierung taciteischer Geschichtsschreibung fallen zwei Aspekte besonders ins Gewicht: Tacitus’ Analysetechnik, die eine Vielzahl historischer Triebkräfte berücksichtigt, und seine Darstellungstechnik, durch die das Zusammenspiel der vielfältigen Kräfte, die den Gang der Geschichte bestimmen, ebenso knapp wie kunstvoll offengelegt wird. Dabei ist die Bedeutung gerade von unterschwelligen und schwer zu fassenden Wirkungsmächten für die taciteische Geschichtsauffassung besonders groß.Ralf Schult geht in seinem Beitrag auf diese Aspekte taciteischer Geschichtsschreibung ein: Er zeigt, wie Tacitus Othos erfolgreichen Umsturz als Ergebnis einer Kette von Umständen und Ereignissen darstellt, an denen die anonymen Massen und deren psychische Verfassung maßgeblichen Anteil haben. Welche Einflüsse haben die allgemeine Stimmung, die öffentliche Meinung und Gerüchte auf das Verhalten der Massen, die bei Tacitus neben Galba und Otho als Hauptakteure der Geschichte erscheinen? Der Beitrag stellt Tacitus als einen ebenso tiefsinnigen Historiker wie raffinierten Stilisten vor und macht deutlich, wie sehr Tacitus die Plausibilität und Transparenz seiner Geschichtsdeutung durch darstellerische Mittel unterstreicht, wenn nicht gar erzeugt.
description: Pegasus-Onlinezeitschrift, Bd. 3, Nr. 3 (2003): Pegasus-Onlinezeitschrift
Robust Spectral Compressed Sensing via Structured Matrix Completion
Creators: name: Chen, Yuxin
name: Chi, Yuejie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Systems and Control (eess.SY)
subject: Numerical Analysis (math.NA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: The paper explores the problem of \emph{spectral compressed sensing}, which aims to recover a spectrally sparse signal from a small random subset of its $n$ time domain samples. The signal of interest is assumed to be a superposition of $r$ multi-dimensional complex sinusoids, while the underlying frequencies can assume any \emph{continuous} values in the normalized frequency domain. Conventional compressed sensing paradigms suffer from the basis mismatch issue when imposing a discrete dictionary on the Fourier representation. To address this issue, we develop a novel algorithm, called \emph{Enhanced Matrix Completion (EMaC)}, based on structured matrix completion that does not require prior knowledge of the model order. The algorithm starts by arranging the data into a low-rank enhanced form exhibiting multi-fold Hankel structure, and then attempts recovery via nuclear norm minimization. Under mild incoherence conditions, EMaC allows perfect recovery as soon as the number of samples exceeds the order of $r\log^{4}n$, and is stable against bounded noise. Even if a constant portion of samples are corrupted with arbitrary magnitude, EMaC still allows exact recovery, provided that the sample complexity exceeds the order of $r^{2}\log^{3}n$. Along the way, our results demonstrate the power of convex relaxation in completing a low-rank multi-fold Hankel or Toeplitz matrix from minimal observed entries. The performance of our algorithm and its applicability to super resolution are further validated by numerical experiments.
description: accepted to IEEE Transactions on Information Theory
Jenseits von Petron und Apuleius: Die Acta Pauli et Theclae als Romanlektüre in der 11. Klasse
Creators: name: Linke, Bernd
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: In seinem Beitrag „Jenseits von Petron und Apuleius: Die Acta Pauli et Theclae als Romanlektüre in der 11. Klasse“ widmet sich Bernd Linke Überlegungen zu einer nicht unproblematischen „bedingten Vorgabe“ des Berliner Rahmenplans für das Fach Latein in der Gymnasialen Oberstufe, in der 11. Jahrgangsstufe einen „antiken Roman“ zu behandeln. Abgesehen davon, dass schon die Wahl dieses für die Antike umstrittenen literarischen Genres bestimmte aus literarhistorischer Perspektive zumindest fragwürdig sein dürft, weist Linke mit Recht auf das Problem einer angemessenen Textauswahl hin, das sich angesichts der überlieferten ‚Romane‘ (Alexander-Roman, Metamorphosen, Apollonios-Roman etc.) unweigerlich stellt, da diese Texte sowohl in sprachlicher Hinsicht als auch inhaltlich und von ihrem Umfang her sich als weitgehend ungeeignet für eine Lektüre in der 11. Jahrgangsstufe erweisen, in der – zumindest in Berlin – nicht selten Schülerinnen und Schüler gemeinsam unterrichtet werden, die aufgrund ihres unterschiedlichen Beginns mit der lateinischen Sprache (L2 oder L3) nicht dieselben Voraussetzungen einbringen.

 In den spätantiken Acta Pauli et Theclae, die von dem wundersamen Schicksal der Heiligen Thekla handeln, bietet sich, wie der Autor überzeugend nachweist, aus verschiedenen Gründen, die in dem Beitrag ausgeführt werden, eine sinnvolle Alternative zu den überlieferten heidnisch-antiken Romanen. Bereitgestellt wird ferner der bisher schwer zugängliche Text des Werks, den Linke auf der Grundlage der griechisch-lateinischen Überlieferung erstmalig für den Unterrichtsgebrauch ediert hat. Abgerundet wird der Beitrag durch eine Auswertung der von Linke durchgeführten Unterrichtsreihe zum Thecla-Roman sowie weiterführendes Material.

Anhang 1 - 3
description: Pegasus-Onlinezeitschrift, Bd. 5, Nr. 2+3 (2005): Pegasus-Onlinezeitschrift
Chiral specific electron vortex beam spectroscopy
Creators: name: Yuan, J.
name: Lloyd, S. M.
name: Babiker, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Electron vortex beams carry well-defined orbital angular momentum (OAM) about the propagation axis. Such beams are thus characterised by chirality features which make them potentially useful as probes of magnetic and other chiral materials. An analysis of the inelastic processes in which electron vortex beams interact with atoms and which involve OAM exchange is outlined, leading to the multipolar selection rules governing this chiral specific electron vortex beam spectroscopy. Our results show clearly that the selection rules are dependent on the dynamical state and location of the atoms involved. In the most favorable scenario, this form of electron spectroscopy can induce magnetic sublevel transitions which are commonly probed using circularly polarized photon beams.
description: 5 pages, 1 figures
title: Emotion recognition from facial expressions using SVM algorithm
title: Αναγνώριση συναισθημάτων από εκφράσεις προσώπου χρησιμοποιώντας SVM αλγόριθμο
Creators: name: Λεμονης Ιωαννης
Publisher: name: Technical University of Crete
Year: 2019

description: The recognition of facial expressions and the corresponding emotion that they convey is something every human understands and it is universal without requiring training. It is instinctively “coded” in humans DNA. Human – Computer interaction can greatly benefit from recognizing various human emotions just by looking at us (no need for same language or any spoken language at all). The way we can achieve this is by taking frames (or live video) that depict human faces showing different emotional expressions and convert them to greyscale which makes it easier and faster to locate the facial area. We then apply a pre-trained mask with 68 flags-points (each one with unique coordination) based on a method that tries to apply these flags around the main facial areas that show details of emotions, around the orifices (mouth, eyes, nose). We proceed by taking all possible combinations of these 68 points and calculate the Euclidean distance between each set and then by using an SVM Machine learning method we train the system to recognize four main emotions (Anger, Joy, Tranquility, Sadness) experimented on two Data Sets (with depictions of expression and corresponding feeling). The data sets being used for the training and validation of the SVM are: Patras A.I.nD.M. data set of 84 directed facial poses (portrait angle) and Fer2013 data set of 960 Not directed facial poses (random angle). Τhe Fer2013 data set was created for a Facial Recognition competition to test the recognition algorithms to their limits, with very small resolution 48x48 pixels and full with out of focus, obscured (either by hair, hands, sunglasses, hats, bad angle etc ) pictures, some of them are not even from real photographs rather portraits or drawings of faces, with wide variety of different people from around the world. After the training we apply a validation test to find out how accurate it is. Of the four examined emotions Joy is the overall best distinguished with 100% (in all three statistical measures: Sensitivity, Specificity and Accuracy) in both Patras data sets tests 72%, 75% and 85% (Sen, Spe, Acc) in the Fer2013 data set accordingly. Anger comes second with 100%, 83%, 87.5% in Patras data set and 56%, 85%, 78% in Fer2013 data set. Tranquility is third with 50%, 100%, 87.5% (Sen, Spe, Acc) in Patras data set and 45%, 67% and 62% in Fer2013 data set. Finally Sadness with 87.5%, 50% and 83% in Patras data set and 21%, 80% and 62% in Fer2013 data set.
Angler: Helping Machine Translation Practitioners Prioritize Model Improvements
Creators: name: Robertson, Samantha
name: Wang, Zijie J.
name: Moritz, Dominik
name: Kery, Mary Beth
name: Hohman, Fred
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Machine learning (ML) models can fail in unexpected ways in the real world, but not all model failures are equal. With finite time and resources, ML practitioners are forced to prioritize their model debugging and improvement efforts. Through interviews with 13 ML practitioners at Apple, we found that practitioners construct small targeted test sets to estimate an error's nature, scope, and impact on users. We built on this insight in a case study with machine translation models, and developed Angler, an interactive visual analytics tool to help practitioners prioritize model improvements. In a user study with 7 machine translation experts, we used Angler to understand prioritization practices when the input space is infinite, and obtaining reliable signals of model quality is expensive. Our study revealed that participants could form more interesting and user-focused hypotheses for prioritization by analyzing quantitative summary statistics and qualitatively assessing data by reading sentences.
description: Accepted to CHI 2023. 20 pages, 6 figures
Formation of droplets with high baryon density at the QCD phase transition in expanding matter
Creators: name: Herold, Christoph
name: Nahrgang, Marlene
name: Mishustin, Igor
name: Bleicher, Marcus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider the (3+1) dimensional expansion and cooling of the chirally-restored and deconfined matter at finite net-baryon densities as expected in heavy-ion collisions at moderate energies. In our approach, we consider chiral fields and the Polyakov loop as dynamical variables coupled to a medium represented by a quark-antiquark fluid. The interaction between the fields and the fluid leads to dissipation and noise, which in turn affect the field fluctuations. We demonstrate how inhomogeneities in the net-baryon density may form during an evolution through the spinodal region of the first-order phase transition. For comparison, the dynamics of transition through the crossover and critical end point is also considered.
description: 14 pages, 4 figures
Explainable Artificial Intelligence for Bayesian Neural Networks: Towards trustworthy predictions of ocean dynamics
Creators: name: Clare, Mariana C. A.
name: Sonnewald, Maike
name: Lguensat, Redouane
name: Deshayes, Julie
name: Balaji, Venkatramani
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: I.2.6; J.2
subject: 68T07, 86A05, 86A08

description: The trustworthiness of neural networks is often challenged because they lack the ability to express uncertainty and explain their skill. This can be problematic given the increasing use of neural networks in high stakes decision-making such as in climate change applications. We address both issues by successfully implementing a Bayesian Neural Network (BNN), where parameters are distributions rather than deterministic, and applying novel implementations of explainable AI (XAI) techniques. The uncertainty analysis from the BNN provides a comprehensive overview of the prediction more suited to practitioners' needs than predictions from a classical neural network. Using a BNN means we can calculate the entropy (i.e. uncertainty) of the predictions and determine if the probability of an outcome is statistically significant. To enhance trustworthiness, we also spatially apply the two XAI techniques of Layer-wise Relevance Propagation (LRP) and SHapley Additive exPlanation (SHAP) values. These XAI methods reveal the extent to which the BNN is suitable and/or trustworthy. Using two techniques gives a more holistic view of BNN skill and its uncertainty, as LRP considers neural network parameters, whereas SHAP considers changes to outputs. We verify these techniques using comparison with intuition from physical theory. The differences in explanation identify potential areas where new physical theory guided studies are needed.
description: 25 pages, 11 figures
Nuclear modification factors of strange mesons measured by PHENIX
Creators: name: Borisov, Vladislav
Publisher: name: Zenodo
Year: 2021
Subjects: ismd21
phenix
raa
nuclear
modification
strange
kaon
φ
ω
π0
pion
η
small systems
3he+au
p+al
p+au
d+au
cu+au
u+u

description: Talk presented at the International Symposium on Multiparticle Dynamics, 2021
StorSeismic: A new paradigm in deep learning for seismic processing
Creators: name: Harsuko, Randy
name: Alkhalifah, Tariq
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: Computational Physics (physics.comp-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Machine learned tasks on seismic data are often trained sequentially and separately, even though they utilize the same features (i.e. geometrical) of the data. We present StorSeismic, as a framework for seismic data processing, which consists of neural network pre-training and fine-tuning procedures. We, specifically, utilize a neural network as a preprocessing model to store seismic data features of a particular dataset for any downstream tasks. After pre-training, the resulting model can be utilized later, through a fine-tuning procedure, to perform tasks using limited additional training. Used often in Natural Language Processing (NLP) and lately in vision tasks, BERT (Bidirectional Encoder Representations from Transformer), a form of a Transformer model, provides an optimal platform for this framework. The attention mechanism of BERT, applied here on a sequence of traces within the shot gather, is able to capture and store key geometrical features of the seismic data. We pre-train StorSeismic on field data, along with synthetically generated ones, in the self-supervised step. Then, we use the labeled synthetic data to fine-tune the pre-trained network in a supervised fashion to perform various seismic processing tasks, like denoising, velocity estimation, first arrival picking, and NMO. Finally, the fine-tuned model is used to obtain satisfactory inference results on the field data.
description: 18 pages, 18 figures