cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Subaru Weak-Lensing Survey of Dark Matter Subhalos in the Coma Cluster : Subhalo Mass Function and Statistical Properties
Creators: name: Okabe, Nobuhiro
name: Futamase, Toshifumi
name: Kajisawa, Masaru
name: Kuroshima, Risa
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a 4 deg^2 weak gravitational lensing survey of subhalos in the very nearby Coma cluster using the Subaru/Suprime-Cam. The large apparent size of cluster subhalos allows us to measure the mass of 32 subhalos detected in a model-independent manner, down to the order of 10^-3 of the virial mass of the cluster. Weak-lensing mass measurements of these shear-selected subhalos enable us to investigate subhalo properties and the correlation between subhalo masses and galaxy luminosities for the first time. The mean distortion profiles stacked over subhalos show a sharply truncated feature which is well-fitted by a Navarro-Frenk-White (NFW) mass model with the truncation radius, as expected due to tidal destruction by the main cluster. We also found that subhalo masses, truncation radii, and mass-to-light ratios decrease toward the cluster center. The subhalo mass function, dn/dln M_sub, in the range of 2 orders of magnitude in mass, is well described by a single power law or a Schechter function. Best-fit power indices of 1.09_-0.32^+0.42 for the former model and 0.99_-0.23^+0.34 for the latter, are in remarkable agreement with slopes of ~0.9-1.0 predicted by the cold dark matter paradigm. The tangential distortion signals in the radial range of 0.02-2Mpc/h from the cluster center show a complex structure which is well described by a composition of three mass components of subhalos, the NFW mass distribution as a smooth component of the main cluster, and a lensing model from a large scale structure behind the cluster. Although the lensing signals are 1 order of magnitude lower than those for clusters at z~0.2, the total signal-to-noise ratio, S/N=13.3, is comparable to, or higher, because the enormous number of background source galaxies compensates for the low lensing efficiency of the low lensing efficiency of the nearby cluster.
description: 30 pages, 18 figures, 9 tables, ApJ in press. Full resolution version is available at http://www.asiaa.sinica.edu.tw/~okabe/files/coma_survey.pdf
Heftner, Herbert: Der Aufstieg Roms. Vom Pyrrhoskrieg bis zur Zerstörung Karthagos (280 -149 v Chr.)
Creators: name: Knobelsdorf, Solveig
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Heftner, Herbert: Der Aufstieg Roms. Vom Pyrrhoskrieg bis zur Zerstörung Karthagos (280 -149 v Chr.). Regensburg: Friedrich Pustet 1997. 493 S., 68,00 DM (ISBN 3-7917-1563-1).
description: Forum Classicum, Nr. 2 (1998): Forum Classicum
One SYK SET
Creators: name: Khveshchenko, D. V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the behavior of a single electron transistor (SET) represented by a dissipative tunnel junction between a pair of quantum dots described by two (possibly, different) Sachdev-Ye-Kitaev (SYK) models. A combined influence of the soft collective charge and energy modes on charge transport is discussed, alongside the competing effects of the Coulomb blockade and emergent Kondo resonances which might all conspire to result in a non-monotonic behavior of the system's conductance.
description: 6 pages, Latex, no pictures
The couplings of the Higgs boson and its CP properties from fits of the signal strengths and their ratios at the 7+8 TeV LHC
Creators: name: Djouadi, Abdelhak
name: Moreau, Grégory
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the full set of the LHC Higgs data from the runs at 7 and 8 TeV center of mass energies that have been released by the ATLAS and CMS collaborations, we determine the couplings of the Higgs particle to fermions and gauge bosons as well as its parity or CP composition. We consider ratios of production cross sections times decay branching fractions in which the theoretical (and some experimental) uncertainties as well as as some ambiguities from new physics cancel out. A fit of both the signal strengths in the various search channels that have been conducted, H -> Z Z, W W, gamma gamma, tau tau and b b, and their ratios shows that the observed ~126 GeV particle has couplings to fermions and gauge bosons that are Standard Model-like already at the 68% confidence level (CL). From the signal strengths in which the theoretical uncertainty is taken to be a bias, the particle is shown to be at most 68% CP-odd at the 99%CL and the possibility that it is a pure pseudoscalar state is excluded at the 4 sigma level when including both the experimental and theoretical uncertainties. The signal strengths also measure the invisible Higgs decay width which, with the same type of uncertainty analysis, is shown to be Gamma_H^inv / Gamma_H^SM < 0.52 at the 68%CL.
description: 15 pages, 13 figures
title: ΕΝ ΟΙΚΩ
καρέ - καρέ στα μοντέρνα ελληνικά ενδότερα 1950 - 1970: Ο εξαμερικανισμός των ελληνικών κατοικιών μέσα από τον ελληνικό κινηματογράφο
Creators: name: Φορτη Κυριακη
Publisher: name: Technical University of Crete
Year: 2018

description: Σκοπός της εργασίας είναι η διερεύνηση  των "μοντέρνων" εσωτερικών χώρων στις  κατοικίες της περιόδου 1950-1970  μέσα από τον ελληνικό κινηματογράφο με έμφαση στη  διαδικασία πρόσληψης των αμερικανικών προτύπων στο σχεδιασμό τους.
Το ερώτημα που τίθεται λοιπόν είναι πως αυτή η αλλαγή και η υιοθέτηση αμερικανικών προτύπων αποτυπώνεται στην ελληνική μεταπολεμική κατοικία της εποχής, ποιες αλλαγές συντελούνται στην διάρθρωση των χώρων της κατοικίας καθώς επίσης και ποιοι νέοι τύποι επίπλων εισάγονται ως απόρροια των νέων καταναλωτικών προτύπων.
A family of rational maps with buried Julia components
Creators: name: Godillon, Sébastien
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: It is known that the disconnected Julia set of any polynomial map does not contain buried Julia components. But such Julia components may arise for rational maps. The first example is due to Curtis T. McMullen who provided a family of rational maps for which the Julia sets are Cantor of Jordan curves. However all known examples of buried Julia components, up to now, are points or Jordan curves and comes from rational maps of degree at least 5. This paper introduce a family of hyperbolic rational maps with disconnected Julia set whose exchanging dynamics of postcritically separating Julia components is encoded by a weighted dynamical tree. Each of these Julia sets presents buried Julia components of several types: points, Jordan curves, but also Julia components which are neither points nor Jordan curves. Moreover this family contains some rational maps of degree 3 with explicit formula that answers a question McMullen raised.
description: 38 pages, 11 figures. Proof in Section 3.1 lightened, appendix added, typos fixed. Accepted in ETDS (without color figures and proofs in appendix)
PSPACE-completeness of Pulling Blocks to Reach a Goal
Creators: name: Ani, Hayashi
name: Asif, Sualeh
name: Demaine, Erik D.
name: Diomidova, Jenny
name: Hendrickson, Dylan
name: Lynch, Jayson
name: Scheffler, Sarah
name: Suhl, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: We prove PSPACE-completeness of all but one problem in a large space of pulling-block problems where the goal is for the agent to reach a target destination. The problems are parameterized by whether pulling is optional, the number of blocks which can be pulled simultaneously, whether there are fixed blocks or thin walls, and whether there is gravity. We show NP-hardness for the remaining problem, Pull?-1FG (optional pulling, strength 1, fixed blocks, with gravity).
description: Full version of JCDCGGG2019 paper and now published in Journal of Information Processing 28 (2020), 22 pages, 25 figures; corrections made to Figures 10 and 15
title: Αντιστίξεις και Συρραφές αστικών συστημάτων. Πρόταση ανάπλασης του παραλιακού μετώπου της Ιεράπετρας.

title: Counterpoints and Sutures of urban systems. Regeneration proposal of Ierapetra city waterfront.
Creators: name: Τσαρουχα Αικατερινη
Publisher: name: Technical University of Crete
Year: 2018

description: Η πόλη της Ιεράπετρας τοποθετείται στο νότιο τμήμα της Κρήτης, σε κόλπο του Λιβυκού, ενώ κατέχει στρατηγική θέση στο μικρότερο άξονα βορρά – νότου της Κρήτης. Η πόλη αναπτύσσεται σταδιακά από την αρχαιότητα μέχρι και σήμερα με προσθήκες, επεκτάσεις και επεμβάσεις στον υφιστάμενο ιστό. Το σύνολο του παραλιακού της μετώπου είναι αποτέλεσμα των εν λόγω επεκτάσεων και αλληλοεπικαλύψεων των διαφορετικών ιστορικών περιόδων και συστημάτων.
Σήμερα, η Ιεράπετρα αποτελεί την πολυπληθέστερη πόλη του Νομού Λασιθίου και το μοναδικό οικονομικό και πολιτικό κέντρου του νοτίου τμήματος της Κρήτης, ενώ πρόκειται για δημοφιλή τουριστικό προορισμό κατά τους καλοκαιρινούς μήνες, όπου φιλοξενείται πληθώρα πολιτιστικών εκδηλώσεων.
Λαμβάνοντας υπόψιν τα παραπάνω, αντικείμενο της παρούσας διπλωματικής εργασίας είναι η εκπόνηση μιας πρότασης ανάπλασης του παραλιακού μετώπου της πόλης. Στόχο της πρότασης αποτελούν η καλύτερη άρθρωση των διαφορετικών συστημάτων και η παράλληλη ανάδειξη των ιδιαίτερων χαρακτηριστικών τους. Επιχειρείται η ορθότερη σύνδεση των τμημάτων του δημοσίου χώρου κατά μήκους του μετώπου και η ενίσχυση των συνδέσεων του με τον υπολειπόμενο αστικό ιστό. Τέλος, επιδιώκεται η τόνωση του χαρακτήρα του θαλάσσιου μετώπου και η αναβάθμισή του, στοχεύοντας στην βελτίωση της εμπειρίας του επισκέπτη (κατοίκου/ τουρίστα), καθιστώντας το πόλο έλξης.
title: Κάτω Χαλέπα, η γειτονιά του τότε επανασχεδιασμένη με τα δεδομένα του τώρα: Aστική ανάπλαση της περιοχής της κάτω Χαλέπας και δημιουργία κέντρου γειτονιάς στη βίλα Πολογιώργη
Creators: name: Κοψαλη Ευθυμια
name: Φορτη Κυριακη
Publisher: name: Technical University of Crete
Year: 2018

description: Η διπλωματική μας προσανατολίζεται στην περιοχή της Κάτω Χαλέπας και του Αγίου Παντελεήμονα μια από τις παλαιότερες γειτονιές της εκτός των τειχών πόλης των Χανίων. Εντοπίζουμε ότι σήμερα το ρέμα του Αγίου Παντελεήμονα νοείται σαν ένα αστικό κενό και η περιοχή της Κάτω Χαλέπας αναπτύσσεται χωρίς να προσανατολίζεται προς αυτό. Σκοπός της παρούσας διπλωματικής εργασίας είναι η ενεργοποίηση του αστικού αυτού κενού και η ανάπτυξη της περιοχής με το βλέμμα στραμμένο προς το ρέμα μέσα από την αστική ανάπλαση της περιοχής, με τη βασική χειρονομία να εντοπίζεται στην ενίσχυση της εγκάρσιας σύνδεσης της Χαλέπας και της Αμπεριάς Χανίων. Η πρόταση μας περιλαμβάνει τον σχεδιασμό τύπων κατοικίας, δίκτυα δημοσίων χώρων καθώς και τη διερεύνηση των σχέσεων ανάμεσα στο δομημένο και το πλήρες, το οργανωμένο κενό και το τοπίο. Το τελευταίο σκέλος της εργασίας αναφέρεται στην αποκατάσταση και επανάχρηση της βίλας Πολογιώργη δημιουργώντας ένα κέντρο γειτονιάς για την περιοχή στον απόηχο της εγκάρσιας σύνδεσης που ενισχύουμε.
title: Η πόλη της Ιεράπετρας : Η ιστορική εξέλιξη και ο ρόλος του σχεδιασμού στη διαμόρφωση της πόλης σήμερα.
title: The city of Ierapetra : The historical evolution and the importance of planning in shaping the city.
Creators: name: Τσαρουχα Αικατερινη
Publisher: name: Technical University of Crete
Year: 2017

description: Η παρούσα ερευνητική εργασία πραγματεύεται την ιστορική πορεία της πόλης της Ιεράπετρας από την ίδρυσή της μέχρι σήμερα και την πολεοδομική της εξέλιξη από τις πρώτες προσπάθειες πολεοδόμησής της μέχρι τη σύγχρονη εποχή.
Στο πρώτο μέρος μελετάται η ιστορική πορεία της πόλης. Ξεκινά από την ίδρυσή της κατά την αρχαιότητα και στη συνέχεια εξετάζονται με χρονολογική σειρά όλες οι ιστορικοί περίοδοι και ο ρόλος της σε κάθε μια από αυτές. Αναφέρονται τα σημαντικότερα γεγονότα που επηρέασαν την εξέλιξή της και ο τρόπος που συνέβη κάθε φορά.
Στο δεύτερο μέρος μελετάται η πολεοδομική εξέλιξη της πόλης από τις πρώτες οργανωμένες προσπάθειες κατά τον 19ο αιώνα μέχρι σήμερα. Εξετάζεται κάθε περίοδος κατά την οποία εφαρμόζονται νέες ρυθμίσεις και γίνεται μια προσπάθεια αποτίμησης των μεταβολών που επέφεραν στη  δομή, μορφή  και λειτουργία της πόλης, τόσο στις περιόδους της θεσμοθέτησης των ρυθμίσεων αυτών όσο και σήμερα.
Calibration of 122 SensL MicroFJ-60035 SiPMs and the reduction of optical crosstalk due to coupled light guides
Creators: name: Rehbein, F.
name: Bretz, T.
name: Alfaro, R.
name: Audehm, J.
name: Biland, A.
name: Do, G.
name: González, M. M.
name: Pérez-Araujo, Y. F.
name: Schaufel, M.
name: Serna-Franco, J.
name: Torres, I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The excellent production quality of recent generations of Silicon Photomultipliers (SiPMs) allows for operation without individual calibration of the breakdown voltage. Measurements of the crosstalk probability and the relative gain of 122 SiPMs of type SensL MicroFJ-60035-TSV are presented. Semi-conductor photo sensors have replaced photo multiplier tubes in numerous applications featuring single-photon resolution, insensitivity to magnetic fields, higher robustness and enhanced photo detection efficiency at lower operation voltage and lower costs. Light guides are used to increase the comparably small photo sensitive area of SiPMs. Their optical coupling changes the surface conditions of the sensor and influences the probability for crosstalk photons to leave the sensor without inducing secondary breakdowns. This study compares properties of sensors that are optically coupled to light guides with bare sensors, operated at nominal bias voltage. It demonstrates, that the optical coupling to a light guide significantly reduces the crosstalk probability of the measured sensors.
Cosmology from Group Field Theory Formalism for Quantum Gravity
Creators: name: Gielen, Steffen
name: Oriti, Daniele
name: Sindoni, Lorenzo
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We identify a class of condensate states in the group field theory (GFT) approach to quantum gravity that can be interpreted as macroscopic homogeneous spatial geometries. We then extract the dynamics of such condensate states directly from the fundamental quantum GFT dynamics, following the procedure used in ordinary quantum fluids. The effective dynamics is a non-linear and non-local extension of quantum cosmology. We also show that any GFT model with a kinetic term of Laplacian type gives rise, in a semi-classical (WKB) approximation and in the isotropic case, to a modified Friedmann equation. This is the first concrete, general procedure for extracting an effective cosmological dynamics directly from a fundamental theory of quantum geometry.
description: 4 pages, revtex, APS style; v2: minor changes, notation around eq.(23) corrected; v3: shortened version to appear in PRL, with minor changes in the text and a new title, but no changes in content
[Gymnasium 105,1998, Heft 3 / Latein und Griechisch (Heft 3, 1998) / Mitteilungsblatt des LV Niedersachsen (Heft 2,1998)...]
Creators: name: Rabl, Josef
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 3 (1998): Forum Classicum
Numberger, Karl: Horaz. Lehrer-Kommentar zu den lyrischen Gedichten
Creators: name: Weber, Brigitte
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Numberger, Karl: Horaz. Lehrer-Kommentar zu den lyrischen Gedichten. 3., neubearb. Aufl. Münster: Aschendorff 1997. 824 S.; 60,00 DM, Lehrervorzugspreis 50,00 DM (ISBN 3-402- 02159-5).
description: Forum Classicum, Nr. 3 (1998): Forum Classicum
title: Οι επιπτώσεις της δικτατορίας στον αστικό ιστό της Βαρκελώνης
title: The impact of Franco's dictatorship in the urban tissue of Barcelona
Creators: name: Λεντζακη Ευαγγελια
Publisher: name: Technical University of Crete
Year: 2018

description: Αντικείμενο της παρούσας ερευνητικής εργασίας είναι η διερεύνηση της ιστορικής εξέλιξης του αστικού ιστού της Βαρκελώνης, μετά τη δικτατορία του Franco. Πιο συγκεκριμένα, εξετάζεται η εξέλιξη που σημειώνεται από το 19ο αιώνα μέχρι και σήμερα, καθώς οι διαφορετικές κοινωνικοπολιτικές καταστάσεις που πλαισίωναν την εκάστοτε ιστορική περίοδο, έχουν επηρεάσει και τη φύση των επεμβάσεων. Αρχικά, ορίζεται σε θεωρητικό επίπεδο ο ρόλος του δημόσιου χώρου μέσα στην πόλη, καθώς και η επίδραση που έχουν οι επικρατούσες πολιτικές συνθήκες σε αυτόν. Στη συνέχεια, εξετάζονται οι επεμβάσεις στη Βαρκελώνη του 19ου αιώνα, δίνοντας έμφαση στην επέκταση του Ildefons Cerdà και σε επεμβάσεις με αφορμή εκδηλώσεις μεγάλου βεληνεκούς. Έπειτα αναφέρεται η εξέλιξη του εμφυλίου πολέμου, τονίζοντας τις επιπτώσεις του στο δημόσιο χώρο και στο ρόλο που κατέχει μέσα στην πόλη. Με τον εκδημοκρατισμό της Ισπανίας το 1975 προσδιορίζεται εκ νέου ο αστικός ιστός που έχει υποστεί τις συνέπειες της δικτατορίας, όπως γίνεται και με τους Ολυμπιακούς Αγώνες το 1992 και το Forum το 2004. Σε αυτό το σημείο, για την καλύτερη κατανόηση των στόχων και των στρατηγικών που χρησιμοποιήθηκαν, αναφέρονται παραδείγματα επεμβάσεων στην εκδημοκρατισμένη πλέον Βαρκελώνη. Τέλος, αναλύεται το εγχείρημα 22@ Barcelona, ώστε να γίνει εμφανής η μεταβολή των στόχων για τον αστικό ιστό της Βαρκελώνης, οι οποίοι αρχικά συμβαδίζουν με την ιδέα του δημοκρατικού δημόσιου χώρου, ενώ στη συνέχεια οδηγούν στο σύγχρονο εμπορευματοποιημένο «μοντέλο της Βαρκελώνης».
Transient growth in linearly stable Taylor-Couette flows
Creators: name: Maretzke, Simon
name: Hof, Björn
name: Avila, Marc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Non-normal transient growth of disturbances is considered as an essential prerequisite for subcritical transition in shear flows, i.e. transition to turbulence despite linear stability of the laminar flow. In this work we present numerical and analytical computations of linear transient growth covering all linearly stable regimes of Taylor--Couette flow. Our numerical experiments reveal comparable energy amplifications in the different regimes. For high shear Reynolds numbers Re the optimal transient energy growth always follows a 2/3-scaling with Re, which allows for large amplifications even in regimes where the presence of turbulence remains debated. In co-rotating Rayleigh-stable flows the optimal perturbations become increasingly columnar in their structure, as the optimal axial wavenumber goes to zero. In this limit of axially invariant perturbations we show that linear stability and transient growth are independent of the cylinders' rotation-ratio and we derive a universal 2/3-scaling of optimal energy growth with Re using WKB-theory. Based on this, a semi-empirical formula for the estimation of linear transient growth valid in all regimes is obtained.
description: Published version: Revised according to JFM referee comments, incorporating various small corrections and clarifications compared to previous submissions
Gorys, Andrea: Wörterbuch Archäologie
Creators: name: Ebert, Werner
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Gorys, Andrea: Wörterbuch Archäologie. München: Deutscher Taschenbuch Verlag 1997. 528 S., 29,90 DM (dtv 604261; ISBN3-423-32504-6).
description: Forum Classicum, Nr. 3 (1998): Forum Classicum
Coulomb Interactions between Dipolar Quantum Fluctuations in van der Waals Bound Molecules and Materials
Creators: name: Stöhr, Martin
name: Sadhukhan, Mainak
name: Al-Hamdani, Yasmine S.
name: Hermann, Jan
name: Tkatchenko, Alexandre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Mutual Coulomb interactions between electrons lead to a plethora of interesting physical and chemical effects, especially if those interactions involve many fluctuating electrons over large spatial scales. Here, we identify and study in detail the Coulomb interaction between dipolar quantum fluctuations in the context of van der Waals complexes and materials. Up to now, the interaction arising from the modification of the electron density due to quantum van der Waals interactions was considered to be vanishingly small. We demonstrate that in supramolecular systems and for molecules embedded in nanostructures, such contributions can amount to up to 6 kJ/mol and can even lead to qualitative changes in the long-range vdW interaction. Taking into account these broad implications, we advocate for the systematic assessment of so-called Coulomb singles in large molecular systems and discuss their relevance for explaining several recent puzzling experimental observations of collective behavior in nanostructured materials.
Radiation Safety in Diagnostic Imaging: Best Practices and Risk Management
Creators: name: abbas, asad
Publisher: name: figshare
Year: 2023
Subjects: Analytical biochemistry
Medical mycology
Cell development, proliferation and death

description: This paper focuses on radiation safety in diagnostic imaging, exploring the best practices and risk management strategies to minimize radiation exposure to patients and healthcare professionals. With the increasing use of ionizing radiation in medical imaging, it is crucial to prioritize patient safety while obtaining high-quality diagnostic information. The abstract provides a concise summary of the paper, highlighting the key points covered, including radiation dose optimization techniques, regulatory guidelines, dose monitoring, and the importance of education and training.
PeV neutrinos from intergalactic interactions of cosmic rays emitted by active galactic nuclei
Creators: name: Kalashev, Oleg E.
name: Kusenko, Alexander
name: Essey, Warren
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The observed very high energy spectra of distant blazars are well described by secondary gamma rays produced in line-of-sight interactions of cosmic rays with background photons. In the absence of the cosmic-ray contribution, one would not expect to observe very hard spectra from distant sources, but the cosmic ray interactions generate very high energy gamma rays relatively close to the observer, and they are not attenuated significantly. The same interactions of cosmic rays are expected to produce a flux of neutrinos with energies peaked around 1 PeV. We show that the diffuse isotropic neutrino background from many distant sources can be consistent with the neutrino events recently detected by the IceCube experiment. We also find that the flux from any individual nearby source is insufficient to account for these events. The narrow spectrum around 1 PeV implies that some active galactic nuclei can accelerate protons to EeV energies.
description: 4 pages, 1 figure, accepted for publication in Phys. Rev. Lett
Kunisch, Norbert: Erläuterungen zur Griechischen Vasenmalerei. 50 Hauptwerke der Sammlung antiker Vasen in der Ruhr-Universität Bochum
Creators: name: Wölke, Hansjörg
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Kunisch, Norbert: Erläuterungen zur Griechischen Vasenmalerei. 50 Hauptwerke der Sammlung antiker Vasen in der Ruhr-Universität Bochum. Köln (usw.): Böhlau 1996. 254 S. 38,00 DM (ISBN 3-412-03996-9).
description: Forum Classicum, Nr. 3 (1998): Forum Classicum
Direct observation of zitterbewegung in a Bose-Einstein condensate
Creators: name: LeBlanc, L. J.
name: Beeler, M. C.
name: Jimenez-Garcia, K.
name: Perry, A. R.
name: Sugawa, S.
name: Williams, R. A.
name: Spielman, I. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Zitterbewegung, a force-free trembling motion first predicted for relativistic fermions like electrons, was an unexpected consequence of the Dirac equation's unification of quantum mechanics and special relativity. Though the oscillatory motion's large frequency and small amplitude have precluded its measurement with electrons, zitterbewegung is observable via quantum simulation. We engineered an environment for 87Rb Bose-Einstein condensates where the constituent atoms behaved like relativistic particles subject to the one-dimensional Dirac equation. With direct imaging, we observed the sub-micrometer trembling motion of these clouds, demonstrating the utility of neutral ultracold quantum gases for simulating Dirac particles.
description: v2: add journal reference, update to published version (11 pages, 5 figures)
Ulixes: Facial Recognition Privacy with Adversarial Machine Learning
Creators: name: Cilloni, Thomas
name: Wang, Wei
name: Walter, Charles
name: Fleming, Charles
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Facial recognition tools are becoming exceptionally accurate in identifying people from images. However, this comes at the cost of privacy for users of online services with photo management (e.g. social media platforms). Particularly troubling is the ability to leverage unsupervised learning to recognize faces even when the user has not labeled their images. In this paper we propose Ulixes, a strategy to generate visually non-invasive facial noise masks that yield adversarial examples, preventing the formation of identifiable user clusters in the embedding space of facial encoders. This is applicable even when a user is unmasked and labeled images are available online. We demonstrate the effectiveness of Ulixes by showing that various classification and clustering methods cannot reliably label the adversarial examples we generate. We also study the effects of Ulixes in various black-box settings and compare it to the current state of the art in adversarial machine learning. Finally, we challenge the effectiveness of Ulixes against adversarially trained models and show that it is robust to countermeasures.
Patient-Specific Parametric Models of the Gravid Uterus and Cervix from 2D Ultrasound
Creators: name: Louwagie, Erin Marie
name: Over, Veronica Helen Marquez
name: Carlson, Lindsey
name: Vink, Joy-Sarah Yumiko
name: Hall, Timothy M.
name: Feltovich, Helen
name: Myers, Kristin M.
Publisher: name: Columbia University
Year: 2020
Subjects: Biomechanics
Uterus, Pregnant
Cervix uteri
Pregnancy

description: This is a video of our lightning talk created for the 2020 Summer Biomechanics, Bioengineering, and Biotransport Conference (SB3C), held online June 17-20, 2020: https://archive.sb3c.org/sb3c2020/ Pregnancy, though ubiquitous, is not well understood, in part due to the difficulties surrounding studying the gravid environment. In order to better understand normal gestation processes, an automated patient-specific parametric modeling framework of the pregnant uterus and cervix based on 2D ultrasound was developed. 29 healthy pregnant patients were recruited to have 2D ultrasound images collected at 4 gestational ages in the standing and supine positions. From these images, three trained sonographers took a set of dimension measurements of the uterus and cervix to characterize their overall size and orientation. A solid model was constructed in Solidworks, and defined in a design table such that the 2D ultrasound dimension measurements could be imported and patient-specific models automatically generated. Across all cases, 86% of models automatically generated correctly. Uterine and cervical volume were determined across gestational age using the novel volume estimating abilities of the model. The uterine volume was shown to increase with gestational age, and the cervical volume showed no clear trend with gestational age. The development of these models allows for rapid creation of patient-specific solid models of pregnant anatomy, providing insight to the evolution of the uterus and cervix in normal gestation.
title: Βελτιστοποίηση σχεδιασμού συστημάτων φωτοβολταϊκών στοιχείων συνδεδεμένων σε ηλεκτρικά δίκτυα με χρήση βελτιστοποίησης σμήνους σωματιδίων και σύγκριση με γενετικούς αλγόριθμους
Creators: name: Δοριάκης Πολυχρόνης
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
Scholz, Peter: Der Philosoph und die Politik. Die Ausbildung der philosophischen Lebensform und die Entwicklung des Verhältnisses von Philosophie und Politik im 4. u. 3. Jh. v. Chr
Creators: name: Wölke, Hansjörg
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Scholz, Peter: Der Philosoph und die Politik. Die Ausbildung der philosophischen Lebensform und die Entwicklung des Verhältnisses von Philosophie und Politik im 4. u. 3. Jh. v. Chr. Stuttgart: Steiner 1998. (Frankfurter althistorische Beiträge. 2). X, 434 S. 136 DM (ISBN 3-515- 07054-0).
description: Forum Classicum, Nr. 1 (1999): Forum Classicum
Laser, Günter: Populo et scaenae serviendum est. Die Bedeutung der Masse in der Späten Römischen Republik
Creators: name: Wölke, Hansjörg
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Laser, Günter: Populo et scaenae serviendum est. Die Bedeutung der Masse in der Späten Römischen Republik. Trier: Wiss. Verlag Trier 1997. (Bochumer Altertumswissenschaftliches Colloquium. 29). 283 S., 49.80 DM (ISBN 3- 88476-260-5).
description: Forum Classicum, Nr. 1 (1999): Forum Classicum
Die Hard Holographic Phenomenology of Cuprates
Creators: name: Khveshchenko, D. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This note discusses the attempts of fitting a number of the approximate power-law dependencies observed in the cuprates into one consistent holographic or holographically inspired hydrodynamic framework. Contrary to the expectations, the goal of reproducing as many as possible of the established behaviors of the thermodynamic and transport coefficients appears to be achievable within the simplistic picture of a non-degenerate fermion fluid with quadratic dispersion. While not immediately elucidating the essential physics of the cuprates, this observation suggests a possible reason for which the previous attempts towards that goal have remained inconclusive.
description: Latex, 7 pages, no figures
Field-angle Resolved Flux-flow Resistivity as a Phase-sensitive Probe of Unconventional Cooper Pairing
Creators: name: Higashi, Yoichi
name: Nagai, Yuki
name: Machida, Masahiko
name: Hayashi, Nobuhiko
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We theoretically investigate the applied magnetic field-angle dependence of the flux-flow resistivity $ρ_{\rm f}(α_{\rm M})$ for an uniaxially anisotropic Fermi surface. $ρ_{\rm f}$ is related to the quasiparticle scattering rate $\varGamma$ inside a vortex core, which reflects the sign change in the superconducting pair potential. We find that $ρ_{\rm f}(α_{\rm M})$ is sensitive to the sign-change in the pair potential and has its maximum when the magnetic field is parallel to the gap-node direction. We propose the measurement of the field-angle dependent oscillation of $ρ_{\rm f}(α_{\rm M})$ as a phase-sensitive field-angle resolved experiment.
description: 6 pages, 5 figures
Sigrides Albert: Imaginum Vocabularium Latinum
Creators: name: Fritsch, Andreas
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Sigrides Albert: Imaginum Vocabularium Latinum. Saarbrücken: Verlag der Societas Latina 1998. 371 S., 32,-DM (ISBN 3-923587-26-0).
description: Forum Classicum, Nr. 2 (1999): Forum Classicum
Cellulose nanocrystals from blueberry pruning residues isolated by ionic liquids and TEMPO-oxidation combined with mechanical disintegration
Creators: name: Pacheco, Claudia Marcela
name: A, Cecilia Bustos
name: Reyes, Guillermo
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Plant Biology

description: In the last years, Chile has increased the production of blueberries; consequently, a large number of lignocellulosic residues derived from the harvesting and pruning are being generated. These residues are commonly burned, therefore increasing CO2 emissions. This study focuses on the extraction of two added-value products from blueberry pruning residues (BPRs), cellulose nanocrystals (CNC-IL) isolated using ionic liquid (IL) 1-ethyl-3-methylimidazolium [emim][Cl], and carboxylated nanocellulose (TOCNC), isolated with (2,2,6,6-tetramethylpiperidine-1-yl) oxyl or TEMPO reagent combined with a mechanical disintegration process. These products were characterized by zeta potential (ζ), FTIR, XRD, TGA, AFM, and conductometric titration. Results show oval-shaped CNC-IL particles with lengths of 46.1 ± 9.3 nm; meanwhile, TOCNC were rod-like shaped particles, with lengths of 120.3 ± 30.6 nm. These BPRs showed a promising potential to produce cellulose nanocrystals (CNCs) with different surface properties, opening a new alternative for the production of cellulose nanomaterials (CNMs) with promising applications in colloidal formulations, coatings, among others.
[Hermes 130, 2002, H. 2 / Museum Helveticum 59, 2002, H. 3 / Classical Quarterly 52, 2002, H. 1 …]
Creators: name: Mensching, Eckart
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 4 (2002): Forum Classicum
Relative Fontaine-Messing theory over power series rings
Creators: name: Liu, Tong
name: Moon, Yong Suk
name: Patel, Deepam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14F30, 11F80, 11F85

description: Let $k$ be a perfect field of characteristic $p>2$, $R := W(k)[\![t_1, \dots, t_d]\!]$ be the power series ring over the Witt vectors, and $X$ be a smooth proper scheme over $R$. The main goal of this article is to extend classical Fontaine-Messing theory to the setting where the base ring is $R$. In particular, we obtain comparison theorems between torsion crystalline cohomology of $X/R$ and torsion étale cohomology in this setting.
Hamiltonian properties in generalized lexicographic products
Creators: name: Ekstein, Jan
name: Teska, Jakub
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C76, 05C45

description: The lexicographic product $G[H]$ of two graphs $G$ and $H$ is obtained from $G$ by replacing each vertex with a copy of $H$ and adding all edges between any pair of copies corresponding to adjacent vertices of $G$. We consider also the generalized lexicographic product such that we replace each vertex of $G$ with arbitrary graph on the same number of vertices. We present sufficient and necessary conditions for traceability, hamiltonicity and hamiltonian connectivity of $G[H]$ if $G$ is a path and hence we improved and extended results in M. Kriesell, A Note on Hamiltonian Cycles in Lexicographical Products.
description: 19 pages, 2 figures
Fabrication of superhydrophobic and UV-resistant surface on cotton fabric via layer-by-layer assembly of silica-based UV absorber
Creators: name: Xiong, Mimi
name: Ren, Zhonghai
name: Liu, Weijin
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Hematology
subject: Plant Biology

description: A hybrid UV absorber (SiO2-H) was successfully synthesized by functionalizing nanosilica (SiO2) with 2,4-dihydroxybenzophenone and then was introduced onto the surface of cotton fabric by sequentially depositing in poly (diallyl dimethyl ammonium chloride) (PDDA) aqueous solution and SiO2-H suspension via layer-by-layer assembly method. The SiO2-H particles imparted excellent ultraviolet (UV) resistance property to the cotton fabric, while forming nano- and micro structure on the surface of cotton fabric, making the fabric superhydrophobic after the modification with hexadecyltrimethoxy silane (HDTMS). The surface morphology, wetting behavior, UV resistance and physical properties of cotton fabrics were studied. According to the results, the modified cotton fabric not only showed strong UV-resistant ability with Ultraviolet Protection Factor (UPF) value as high as 500, but also displayed superhydrophobicty with WCA of 153 ± 1°. Moreover, the durability of multifunctional surface was examined by laundering and abrasion tests. The modified fabrics still maintained hydrophobic property and excellent UV resistance after 300 abrasion or 20 laundering cycles, demonstrating outstanding durability.
Toshiba Library for Japanese Legal Research in the Arthur W. Diamond Law Library: The Birth of Walter Gellhorn’s Brainchild
Creators: name: Nakashima, Yukino
Publisher: name: Columbia University
Year: 2019
Subjects: Law libraries
Law libraries--Collection development
Academic libraries
History

description: Behind the façade of a library—books, study rooms, and computer terminals—lies many human stories. This paper chronicles events surrounding the creation of the largest academic Japanese law library in the United States. It focuses on two extraordinary law faculty members at Columbia and their successful fundraising efforts from the initial concept of building a Japanese law library through the establishment of permanent funding. It recounts insightful visions, perseverance, and lasting personal relationships. It explores possibilities for the library going forward.
A Retrospective on Abenomics
Creators: name: Lincoln, Edward J.
Publisher: name: Columbia University
Year: 2020
Subjects: Economics
Economic policy

description: Shinzo Abe became prime minister in January 2013 in part because he touted a three-pronged coordinated economic plan dubbed “Abenomics.” The goal was to restore the economy to two percent positive inflation and two percent average real GDP growth within two years. Now that he has stepped down, it is time to review his policies and their outcomes. This paper argues that he did not achieve the stated goal. The original set of policies was well conceived, but the policies were not really coordinated and were not aggressively pursued.
Strategic Exploration: Preemption and Prioritization
Creators: name: Liu, Qingmin
name: Wong, Yu Fu
Publisher: name: Columbia University
Year: 2020
Subjects: Economics
Competition--Econometric models
Equilibrium (Economics)

description: This paper provides a model of strategic exploration in which two competing players simultaneously explore a set of alternatives over time to study search dynamics, payoff divisions, and distributions of discovery time. The strategic tension is between preemption, i.e., the incentive to covertly explore alternatives that the opponent will explore in future, and prioritization, i.e., the incentive to explore alternatives with the highest success probabilities. We show that players randomize over the same set of alternatives that expands over time, duplicating each other’s explorations from start to finish. When players are symmetric in their speed of exploration, equilibrium strategies are greedy. In the asymmetric case, the weak player’s strategy is greedy, but the strong player randomizes over alternatives with different posteriors and captures a share of payoff disproportionately larger than his share of exploration capacity. The weak player conducts extensive instead of intensive exploration, i.e., he covers as many alternatives as the strong player does but never explores any alternative with cumulative probability one. The overall discovery time decreases in asymmetry in the first-order stochastic dominance sense.
Strong edge coloring of planar graphs
Creators: name: Hudák, Dávid
name: Lužar, Borut
name: Soták, Roman
name: Škrekovski, Riste
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15, 05C10

description: A strong edge coloring of a graph is a proper edge coloring where the edges at distance at most two receive distinct colors. It is known that every planar graph with maximum degree D has a strong edge coloring with at most 4D + 4 colors. We show that 3D + 6 colors suffice if the graph has girth 6, and 3D colors suffice if the girth is at least 7. Moreover, we show that cubic planar graphs with girth at least 6 can be strongly edge colored with at most 9 colors.
Phase space holography with no strings attached
Creators: name: Khveshchenko, D. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This note discusses the Wigner function representation from the standpoint of establishing a holography-like correspondence between the descriptions of a generic quantum system in the phase space ('bulk') picture versus its spacetime ('boundary') counterpart. Under certain circumstances the former might reduce to the classical dynamics of a local metric-like variable while the latter takes on the form of some bosonized collective field hydrodynamics. This generic pseudo-holographic duality neither relies on any particular symmetry of the system in question, nor does it require any connection to an underlying 'string theory', as in the various 'ad hoc' scenarios of applied holography.
description: Latex, 10 pages, no figures
Beulah Livingstone
Creators: name: Abel, Richard
Publisher: name: Columbia University
Year: 2020
Subjects: Women in the motion picture industry
Motion pictures
Silent films

description: Born and initially educated in Atlanta, Georgia, Beulah Livingstone moved to New York City with her Jewish parents, Harry and Lucy Frank, and graduated from Ethical Culture Normal School ("Jewess Is Highest Salaried Publicity Director"). For a few years she taught kindergarten and also wrote newspaper articles for the New York Sun and the New York American as well as sold short stories to the New York Tribune. With savings, she took a trip to Europe, where she conducted celebrity interviews and met Sarah Bernhardt's leading man, Lou Tellegen, who hired her as his press agent (“Woman's World”). Soon after opening her own office for freelance publicity work in New York, Livingstone counted Anna Pavlova, Mr. and Mrs. Vernon Castle, David Belasco, F. Ray Comstock, and other high-profile theatrical figures as clients.
Evaluation of the protection and release rate of bougainvillea (Bougainvillea spectabilis) extracts encapsulated in alginate beads
Creators: name: Orozco-Villafuerte, Juan
name: Escobar-Rojas, Alondra
name: Buendía-González, Leticia
name: García-Morales, Carla
name: Hernandez-Jaimes, Carmen
name: Alvarez-Ramirez, Jose
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Plant Biology

description: There is a growing demand in the food industry for natural food products to replace synthetic ingredients. Motivated by this fact, the present work studied the extraction of coloring compounds from Bougainvillea spectabilis under aqueous and ethanolic conditions, and the encapsulation of the extract in alginate beads. Ethanolic extraction was more efficient as reflected by the higher values for total phenols (6.78 ± 0.24 mg EAG/g), betacyanins (5.04 ± 0.13 mg/g), betaxanthines (1.35 ± 0.06 mg/g,) and inhibition capacity (81.31 ± 4.23%). FTIR analysis suggested the presence of interactions between the extract and the alginate chains. The release kinetics of compounds in alginate beads was measured under aqueous and ethanolic conditions at 25.0 °C and at 70.0 °C. Color was also monitored, showing that the color parameters followed a kinetics pattern similar to the released extract. However, the release of betalains exhibited a mixed behavior, reflecting interactions between the different compounds of the bougainvillea extract and the alginate chains. The extracts released from the beads were characterized to determine the preservation of their properties during encapsulation, concluding that the encapsulation is efficient to protect and release the bioactive compounds from bougainvillea extracts.
title: Προσαρμογή αλγορίθμων ''Fingerprint recognition (NBIS)'' και ''Multiple sequence allignment program (MAFFT)" για εκτέλεση στον πολυεπεξεργαστή cell broadband engine
Creators: name: Τζανουδάκης Θεόδωρος
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
Non-Local Boxes for Networks
Creators: name: Bancal, Jean-Daniel
name: Gisin, Nicolas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonlocal boxes are conceptual tools that capture the essence of the phenomenon of quantum non-locality, central to modern quantum theory and quantum technologies. We introduce network nonlocal boxes tailored for quantum networks under the natural assumption that these networks connect independent sources and do not allow signaling. Hence, these boxes satisfy the No-Signaling and Independence (NSI) principle. For the case of boxes without inputs, connecting pairs of bipartite sources and producing binary outputs, we prove that the sources and boxes producing local random outputs and maximal 2-box correlations, i.e. $E_2=\sqrt{2}-1$, $E_2^o=1$, are essentially unique.
description: 4 pages + refs and a short appendix
title: Μελέτη και πειραματική διάταξη για υψηλής ταχύτητας σειριακή επικοινωνία με FPGA
Creators: name: Βασιλόπουλος Δημήτριος
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο