cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Terahertz pulse generation with binary phase control in non-linear InAs metasurface
Creators: name: Jung, Hyunseung
name: Hale, Lucy L.
name: Gennaro, Sylvain D.
name: Briscoe, Jayson
name: Iyer, Prasad P.
name: Doiron, Chloe F.
name: Harris, C. Thomas
name: Luk, Ting Shan
name: Addamane, Sadhvikas J
name: Reno, John L.
name: Brener, Igal
name: Mitrofanov, Oleg
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The effect of terahertz (THz) pulse generation has revolutionized broadband coherent spectroscopy and imaging at THz frequencies. However, THz pulses typically lack spatial structure, whereas structured beams are becoming essential for advanced spectroscopy applications. Non-linear optical metasurfaces with nanoscale THz emitters can provide a solution by defining the beam structure at the generation stage. We develop a non-linear InAs metasurface consisting of nanoscale optical resonators for simultaneous generation and structuring of THz beams. We find that THz pulse generation in the resonators is governed by optical rectification. It is more efficient than in ZnTe crystals, and it allows us to control the pulse polarity and amplitude, offering a platform for realizing binary-phase THz metasurfaces. To illustrate this capability, we demonstrate an InAs metalens, which simultaneously generates and focuses THz pulses. The control of spatiotemporal structure using nanoscale emitters opens doors for THz beam engineering and advanced spectroscopy and imaging applications.
description: 22 pages, 5 figures
Doris Mischka, Methodische Aspekte zur Rekonstruktion prähistorischer Siedlungsmuster. Landschaftsgenese vomEnde des Neolithikums bis zur Eisenzeit im Gebiet des südlichen Oberrheins
Creators: name: Veit, Ulrich
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Doris Mischka, Methodische Aspekte zur Rekonstruktion prähistorischer Siedlungsmuster. Landschaftsgenese vom Ende des Neolithikums bis zur Eisenzeit im Gebiet des südlichen Oberrheins. Freiburger Archäologische
Studien, Band 5. Verlag Marie Leidorf, Rahden 2007. 391 Seiten, 145 Abbildungen, 1 Kartenbeilage, 38 Tabellen
description: Bonner Jahrbücher, Bd. 208.2008(2010): Bonner Jahrbücher
Patrick Schollmeyer, Römische Tempel. Kult und Architektur im Imperium Romanum
Creators: name: Gros, Pierre
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Patrick Schollmeyer, Römische Tempel. Kult und Architektur im Imperium Romanum. Éditeur Philipp von Zabern, Mayence 2008. 192 pages, 164 figures en couleurs
description: Bonner Jahrbücher, Bd. 208.2008(2010): Bonner Jahrbücher
Britta Rabe, Tropaia. τροπή und σκῦλα. Entstehung, Funktion und Bedeutung des griechischen Tropaions
Creators: name: Schmuhl, Yvonne
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Britta Rabe, Tropaia. τροπή und σκῦλα. Entstehung, Funktion und Bedeutung des griechischen Tropaions. Tübinger Archäologische Forschungen, Band 5. Verlag Marie Leidorf, Rahden 2008. 241 Seiten, 70 Tafeln
description: Bonner Jahrbücher, Bd. 208.2008(2010): Bonner Jahrbücher
A tomographic approach to the sum uncertainty relation and quantum entanglement in continuous variable systems
Creators: name: Paul, Soumyabrata
name: Lakshmibala, S.
name: Balakrishnan, V.
name: Ramanan, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entropic uncertainty relations (EURs) have been examined in various contexts, primarily in qubit systems, including their links with entanglement, as they subsume the Heisenberg uncertainty principle. With their genesis in the Shannon entropy, EURs find applications in quantum information and quantum optics. EURs are state-dependent, and the state has to be reconstructed from tomograms (which are histograms readily available from experiments). This is a challenge when the Hilbert space is large, as in continuous variable (CV) and certain hybrid quantum (HQ) systems. An alternative approach is to extract information about the unknown quantum state directly from appropriate tomograms. Many variants of EURs can be computed from tomograms. In the literature many tomographic entanglement indicators (TEIs) that can be calculated from tomograms have been defined. The objectives of this work are as follows: (i) Use the tomographic approach to investigate the links between EURs and TEIs in CV and HQ systems as they evolve in time. (ii) Identify the TEI that most closely tracks the temporal evolution of EURs. We consider two generic systems. The first is a multilevel atom modeled as a nonlinear oscillator interacting with a quantized radiation field. The second is the $Λ$-atom interacting with two radiation fields. The former model accommodates investigations on the role of the initial state of the field and the ratio of the strengths of interaction and nonlinearity in the connection between TEIs and EURs. The second model opens up the possibility of examining the connection between mixed state bipartite entanglement and EURs, when the number of atomic levels is finite. Since the tomogram respects the requirements of classical probability theory, this effort also sheds light on the extent to which TEIs reflect the temporal behaviour of those EURs which are rooted in the Shannon entropy.
description: 8 pages, 4 figures
Roberto Meneghini und Riccardo Santangeli Valenzani (hrsg.), Roma. Lo Scavo dei Fori Imperiali 1995-2000. I contesti ceramici
Creators: name: Ortisi, Salvatore
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Roberto Meneghini und Riccardo Santangeli Valenzani (hrsg.), Roma. Lo Scavo dei Fori Imperiali 1995-2000. I contesti ceramici. Collection de l’École Française de Rome, Band 365. Selbstverlag der École Française, Rom 2006. 233 Seiten mit zahlreichen Abbildungen und Tabellen
description: Bonner Jahrbücher, Bd. 208.2008(2010): Bonner Jahrbücher
The Autonomous Data Reduction Pipeline for the CUTE Mission
Creators: name: Sreejith, A. G.
name: Fossati, Luca
name: Ambily, S.
name: Egan, Arika
name: Nell, Nicholas
name: France, Kevin
name: Fleming, Brian T.
name: Haas, Stephanie
name: Chambliss, Michael
name: DeCicco, Nicholas
name: Steller, Manfred
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Colorado Ultraviolet Transit Experiment (CUTE) is a 6U NASA CubeSat carrying on-board a low-resolution, near-ultraviolet (2479-3306 A) spectrograph. It has a Cassegrain telescope with a rectangular primary to maximize the collecting area, given the shape of the satellite bus, and an aberration correcting grating to improve the image quality, and thus spectral resolution. CUTE, launched on the 27th of September 2021 to a Low Earth Orbit, is designed to monitor transiting extra-solar planets orbiting bright, nearby stars to improve our understanding of planet atmospheric escape and star-planet interaction processes. We present here the CUTE autONomous daTa ReductiOn pipeLine (CONTROL), developed for reducing CUTE data. The pipeline has been structured with a modular approach, which also considers scalability and adaptability to other missions carrying on-board a long-slit spectrograph. The CUTE data simulator has been used to generate synthetic observations used for developing and testing the pipeline functionalities. The pipeline has been tested and updated employing ight data obtained during commissioning and initial science operations of the mission.
description: Accepted for publication in the Publications of the Astronomical Society of the Pacific
Babette Ludowici, Hauke Jöns, Sunhild Kleingärtner, Jonathan Scheschkewitz und Matthias Hardt (Hrsg.), Trade and Communication Networks of the First Millennium AD in the northern part (sic!) of Central Europe. Central Places, Beach Markets, Landing Places and Trading Centres
Creators: name: Hesse, Stefan
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Babette Ludowici, Hauke Jöns, Sunhild Kleingärtner, Jonathan Scheschkewitz und Matthias Hardt (Hrsg.), Trade and Communication Networks of the First Millennium AD in the northern part (sic!) of Central Europe. Central Places, Beach Markets, Landing Places and Trading Centres. Neue Studien zur Sachsenforschung, Band 1. Verlag Konrad Theiss, Stuttgart 2010. 383 Seiten mit 192 zum Teil farbigen Abbildungen und 10 Tabellen.
description: Bonner Jahrbücher, Bd. 209.2009(2011): Bonner Jahrbücher
Lieberg, Godo: Caesars Politik in Gallien. Interpretationen zum Bellum Gallicum / Walser, Gerold: Studien zum Beginn der Caesarischen Eroberung von Gallien
Creators: name: Wölke, Hansjörg
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu:

Lieberg, Godo: Caesars Politik in Gallien. Interpretationen zum Bellum Gallicum. Bochum: Brockmeyer 1998. 186 S., 34,80 DM (ISBN 3- 8196-0564-9).

Walser, Gerold: Studien zum Beginn der Caesarischen Eroberung von Gallien. Stuttgart: Steiner 1998. 192 S., 76,00 DM (Historia. Einzelschriften. 118; ISBN 3-515-07248-9).
description: Forum Classicum, Nr. 3 (1999): Forum Classicum
Finding the missing baryons in the intergalactic medium with localized fast radio bursts
Creators: name: Yang, K. B.
name: Wu, Q.
name: Wang, F. Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The missing baryon problem is one of the major unsolved problems in astronomy. Fast radio bursts (FRBs) are bright millisecond pulses with unknown origins. The dispersion measure of FRBs is defined as the electron column density along the line of sight, and accounts for every ionized baryon. Here we measure the baryon content of the Universe using 22 localized FRBs. Unlike previous works that fixed the value of dispersion measure of FRB host galaxies and ignored the inhomogeneities of the intergalactic medium (IGM), we use the probability distributions of dispersion measures contributed by host galaxies and IGM from the state-of-the-art IllustrisTNG simulations. We derive the cosmic baryon density of $Ω_b=0.0490^{+0.0036}_{-0.0033}$ (1$σ$), with a precision of 7.0%. This value is dramatically consistent with other measurements, such as the cosmic microwave background and Big Bang nucleosynthesis. Our work supports that the baryons are not missing, but residing in the IGM.
description: 11 pages, 4 figures, 1 table, accepted for publication in ApJ Letters
It’s in Your Best Interest We Record You: Two Plays by Kristof Kelemen
Creators: name: Stern, Cole Josset
Publisher: name: Columbia University
Year: 2020
Subjects: Theater
Drama
Drama--Technique

description: This thesis contains the translated and edited texts of Observers and Hungarian Acacia by the Hungarian playwright Kristof Kelemen. Accompanying the texts is an introduction with social and historical context for the modern Hungarian theatre and shorter introductions to each text that delve into their dramaturgical framework and dramatic goals.
Rationalizing doping and electronic correlations in LaFe$_2$As$_2$
Creators: name: Gorni, Tommaso
name: Florez-Ablan, Diego
name: Medici, Luca de'
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We compute the electronic properties of the normal state of uncollapsed LaFe$_2$As$_2$, taking into account local dynamical correlations by means of slave-spin mean-field+density-functional theory. Assuming the same local interaction strength used to model the whole electron- and hole-doped BaFe$_2$As$_2$ family, our calculations reproduce the experimental Sommerfeld specific heat coefficient, which is twice the value predicted by uncorrelated band theory. We find that LaFe$_2$As$_2$ has a reduced bare bandwidth and this solves the apparent paradox of its sizeable correlations despite its nominal valence d$^{6.5}$, which would imply extreme overdoping and uncorrelated behaviour in BaFe$_2$As$_2$. Our results yield a consistent picture of the whole 122 family and point at the importance of the correlation strength, rather than sheer doping, in the interpretation of the phase diagram of iron-based superconductors
description: 5 pages, 4 figures
ЭКСТРАКЦИЯ БЕНЗОЛА ДМСО+ДЭГ
Creators: name: Жўраева, Л.Р.
name: Мусурманова, С.О.
name: Норбекова, Д.Л.
Publisher: name: Zenodo
Year: 2023

description: В разных странах получение бензола основано на различных процессах. Основными источниками получения бензола в Узбекистане являются пиролизный дистиллят производства СП ООО «Uz-Kor Gas Chemical»и катализат риформинга производства ООО «Бухарский НПЗ».
Nonequilibrium Model of Photon Condensation
Creators: name: Kirton, Peter
name: Keeling, Jonathan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a nonequilibrium model of condensation and lasing of photons in a dye filled microcavity. We examine in detail the nature of the thermalization process induced by absorption and emission of photons by the dye molecules, and investigate when the photons are able to reach a thermal equilibrium Bose-Einstein distribution. At low temperatures, or large cavity losses, the absorption and emission rates are too small to allow the photons to reach thermal equilibrium and the behavior becomes more like that of a conventional laser.
description: 5 pages, 3 figures
The Risk of Inequality: A Quantitative Research Proposal Exploring Effects of Income Inequality on Risk-Taking
Creators: name: Khorrami, Peggah
Publisher: name: Columbia University
Year: 2020
Subjects: Health behavior
Risk-taking (Psychology)
Income distribution
Income distribution--Health aspects

description: Economic inequality has been rapidly increasing around the world. Increased income inequality has been associated with poorer financial and health outcomes. However, the mechanisms linking inequality to these outcomes is not fully understood. A recent study has posited that inequality may promote poor outcomes partly by increasing risky behavior. However, prior research has suggested an opposite effect, with greater inequality being linked to decreased risk-taking. This research proposal aims to reconcile the varying evidence regarding the effect of inequality on individual risk-taking. The proposed study employs primary and secondary quantitative analyses to assess the relationship between income inequality and individual decision-making with regards to risk in multiple populations. The primary analysis uses data from the Community Health Network (CHN) patients in New York City to understand the link between inequality and risk-taking in an underserved population (n=50,000). The secondary analysis uses data from a study aiming to test the replicability of Prospect Theory around the world (n=4,099). This dataset is used to measure inequality on a larger country-level scale. Finally, the suitability of risk-taking as a metric for understanding health behavior is assessed through the relationship between risk-taking and missed preventive appointments.
title: Ανάπτυξη αλγορίθμου βέλτιστης διαστασιολόγησης γεωθερμικού συστήματος για θέρμανση και ψύξη
Creators: name: Γουλεάκη Αικατερίνη
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Study of vortex dynamics in an a-MoGe thin film using low-frequency two-coil mutual inductance measurements
Creators: name: Mandal, Soumyajit
name: Basistha, Somak
name: Jesudasan, John
name: Bagwe, Vivas
name: Raychaudhuri, Pratap
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We extract the vortex lattice parameters using low-frequency two-coil mutual inductance measurements in a 20-nm-thick superconducting a-MoGe thin film. We fit the temperature dependence of ac penetration depth in the mixed state using a model developed by Coffey and Clem and demonstrate a procedure for extracting vortex lattice parameters such as pinning constant, vortex lattice drag coefficient, and pinning potential barrier. We show that the extracted parameters follow the magnetic field variation expected for a weakly pinned 2-dimensional vortex lattice.
description: 21 pages, 6 figures
title: Ολοκληρωμένο υπολογιστικό περιβάλλον εξέλιξης σολιτονικών κυψελιδικών αυτομάτων
Creators: name: Κάλφα Μαρία
Publisher: name: Technical University of Crete
Year: 2012

description: I: 1: Εισαγωγή -- 2: Θεωρία - Αυτόματα Φίλτρου -- 3: Γενικευμένος κανόνας εξέλιξης -- 4: Υπολογιστική υλοποίηση -- II: Κώδικας Υπολογιστικής Υλοποίησης Κανόνων εξέλιξης Σολιτονικών Κ.Α.
title: Κατάσταση και προοπτικές της ελληνικής ακτοπλοµιας
Creators: name: Βεριβάκη Αικατερίνη
Publisher: name: Technical University of Crete
Year: 2011

description: φ. 1: Περιγραφή, ανάλυση και αξιολόγηση της υφιστάμενης κατάστασης -- Κεφ. 2: Ιστορική εξέλιξη των θεσμικών και κοινωνικο-οικονομικών παραγόντων διαμόρφωσης της ακτοπλοµιας -- Κεφ. 3: Οι νέες τάσεις στην τεχνολογία της ελληνικής ναυτιλιακής βιομηχανίας -- Κεφ. 4: Συγκρίσεις της ακτοπλοϊας με εναλλακτικά μέσα μεταφοράς και προοπτικές ανάπτυξης -- Κεφ. 5: Η πολιτική των μεταφορών και οι προοπτικές της ακτοπλοµιας
Einstein-scalar field solutions in AdS spacetime: clouds, boundary conditions, and scalar multipoles
Creators: name: Astefanesei, Dumitru
name: Huang, Hyat
name: Kunz, Jutta
name: Radu, Eugen
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider an Einstein-scalar field model which is a consistent truncation of ${\cal N}=8$ $D=4$ gauged supergravity, the scalar field possessing a potential which is unbounded from below and a tachyonic mass above the Breitenlohner-Freedman bound. We investigate the spherically symmetric asymptotically anti-de Sitter soliton and black hole solutions, with the aim of clarifying the asymptotics and the possible boundary conditions at infinity. The emerging picture is contrasted with that found for an Einstein-scalar field model with the same scalar mass and a quartic self-interaction term. We also provide arguments for the existence of solitonic solutions which can be viewed as non-linear continuation of the (probe) scalar multipolar clouds, with emphasis on the dipole case. Apart from numerical results, exact solutions are found for solitons with a monopole and dipole scalar field, as perturbations around the AdS background.
description: 36 pages, 13 figures, Comments welcome
title: Αποτίμηση φέροντος οργανισμού νότιου ενετικού Νεωρίου Χανίων "Benedetto Moro" με ιδιομορφική ανάλυση πεπερασμένων στοιχείων
Creators: name: Τσιναράκης Θεόδωρος
Publisher: name: Technical University of Crete
Year: 2011

description: Μη διαθέσιμο
Dialogue Conspiracy
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Conspiracy theories
Presidents--Assassination
Espionage

description: Mae Brussell hosts Dialogue Conspiracy #187 on March 10, 1975. Discusses role of CIA and of Lee Harvey Oswald in assassination of JFK. Discusses FBIs espionage on Martin Luther King Jr.
Jörgen Vogel, Benedikt van Vugt, Theodor van Vugt, Caesar, De bello Gallico / Thomas Dold, Catull, Carmina
Creators: name: Neblung, Dagmar
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu:

Jörgen Vogel, Benedikt van Vugt, Theodor van Vugt, Caesar, De bello Gallico. Paderborn: Ferdinand Schöningh 2000. Texte, 227 S. (ISBN 3-506-10900-6), Lehrerband, 80 S. (ISBN 3-506-10910-3).

Thomas Dold, Catull, Carmina. Paderborn: Ferdinand Schöningh 2001. Texte, 132 S. (ISBN 3-506-10902-2), Lehrerband, 109 S. (ISBN 3-506-10912-X).
description: Forum Classicum, Nr. 4 (2001): Forum Classicum
$L^1$-Uniqueness of Kolmogorov Operators Associated to 2D Stochastic Navier-Stokes Coriolis Equations with Space-Time White Noise
Creators: name: Sauer, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 76D05, 60H15, 76B03, 76M35

description: We consider the Kolmogorov operator $K$ associated to a stochastic Navier-Stokes equation driven by space-time white noise on the two-dimensional torus with periodic boundary conditions and a rotating reference frame, introducing fictitious forces such as the Coriolis force. This equation then serves as a simple model for geophysical flows. We prove that the Gaussian measure induced by the enstrophy is infinitesimally invariant for $K$ on finitely based cylindrical test functions and moreover $K$ is $L^1$-unique w. r. t. the enstrophy measure for sufficiently large viscosity.
description: 18 pages. This is the prepublication draft of the article published online in J. Theoret. Probab (2014)
The giant low surface brightness galaxy Malin 1: new constraints for its molecular gas mass from GBT/ARGUS observations
Creators: name: Galaz, Gaspar
name: Frayer, David T.
name: Blaña, Matias
name: Howk, J. Christopher
name: Puzia, Thomas
name: Johnston, Evelyn J.
name: Ordenes-Briceño, Yasna
name: Church, Sarah
name: Gil, Santiago
name: Joachimi, Katerine
name: Mora, Marcelo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report on results from GBT/ARGUS $^{12}$CO(1-0) observations for the giant low surface brightness galaxy Malin 1, which allow us to determine an upper limit for its CO mass, and hence its molecular gas mass and molecular gas mass surface density $Σ_{H_2}$. Although we performed very deep observations through 17 hours on source integration time, reaching a noise level of $\sim 0.2$ mK (T$^{*}_{A}$) with a corresponding extended source CO limit (3$σ$) of 0.09 K km s$^{-1}$, 19 times more sensitive than previous works, we do not detect the $^{12}$CO(1-0) emission line. However, the observations allow us to estimate an upper limit (3$σ$) for the CO mass of about $7.4 \times 10^9$ M$_\odot$ for the extended emission, and $1.4 \times 10^8$ M$_\odot$ for the central part of the galaxy. With these figures we conclude that the molecular gas surface density is lower than 0.3 M$_\odot$ pc$^{-2}$, and the corresponding molecular to atomic gas mass ratio is lower than 0.13. The evidence suggests a quite different physical conditions for the interstellar medium in Malin 1 compared to that of normal, high surface brightness spirals. This, in one way to another, keeps an usual molecular gas tracer as CO hidden from our observations, in spite of the diverse stellar and structural properties of Malin 1 observed by several authors since more than 30 years.
description: This is the final (proof-corrected) version, published in ApJ Letters
Reflections on Breaking Rules
Creators: name: Fanselow, John
Publisher: name: Columbia University
Year: 2014
Subjects: Teaching
Reflective teaching
Education

description: In 2014, Andrzej Cirocki, the Editor in Chief of The European Journal of Applied Linguistics and TEFL, invited Alan Maley to edit a special issue of the journal devoted to the theme of TESOL Teacher Education and Development. In Volume 3, Number 2, Alan wrote this in his Introduction to the Special Issue: The . . . three articles [on teacher preparation] by John F. Fanselow, Jim Scrivener and Adrian Underhill, all address different aspects of the key importance of the classroom act of intervention by teachers in the learning process. Though not identical, their views are highly congruent in their approach to the realities of what learning might be like in actual classrooms. John F. Fanselow returns to his seminal book, Breaking Rules, and re-examines his work in the light of subsequent experience and reflection. His exploration of the way small changes may have disproportionately large effects and the need to observe what actually happens at the micro-level in the classroom encounter is unfailingly challenging, and at times provocative He provides copious examples, and an extended discussion of work with three student teachers.
Automated detection of coronaL MAss ejecta origiNs for space weather AppliCations (ALMANAC)
Creators: name: Williams, Thomas
name: Morgan, Huw
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Alerts of potentially hazardous coronal mass ejections (CME) are based on the detection of rapid changes in remote observations of the solar atmosphere. This paper presents a method that detects and estimates the central coordinates of CME eruptions in Extreme Ultraviolet (EUV) data, with the dual aim of providing an early alert, and giving an initial estimate of the CME direction of propagation to a CME geometrical model. In particular, we plan to link the ALMANAC method to the CME detection and characterisation module of the Space Weather Empirical Ensemble Package (SWEEP), which is a fully automated modular software package for operational space weather capability currently being developed for the UK Meteorological Office. In this work, ALMANAC is applied to observations by the Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory (SDO). As well as presenting the method, a proof of concept test is made on a limited set of data associated with twenty halo CMEs recorded by the Coordinated Data Analysis Workshop (CDAW) catalogue near the activity maximum of solar cycle 24. SDO/AIA data for each event is processed at 6 minute cadence to identify the on-disk location and time of each CME. The absolute mean deviance between the ALMANAC and CDAW source event coordinates are within 37.05 +- 29.71 minutes and 11.01 +- 10.39 degrees. These promising results give a solid foundation for future work, and will provide initial constraints to an automated CME alert and forecasting system.
Lighting and webcam setup for teaching online classes
Creators: name: Garay, Kristin
name: Marquart, Matthea S.
name: Yae-Eun Chung, Rebecca
name: Baez, Johanna C.
Publisher: name: Columbia University
Year: 2020
Subjects: Web-based instruction
Distance education
Video recording--Lighting

description: This illustrated two-pager explains the basics of lighting and webcam setup for teaching online classes. It also explains the most common lighting mistakes and their solutions. This two-pager includes: -- How to light your face -- How to set up your webcam -- Common lighting mistakes and how to fix them -- A helpful lighting setup checklist
Extensions of two-field mimetic gravity
Creators: name: Zheng, Yunlong
name: Rao, Haomin
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Two-field mimetic gravity was recently realized by looking at the singular limit of the conformal transformation between the auxiliary metric and the physical metric with two scalar fields involved. In this paper, we reanalyze the singular conformal limit and find a more general solution for the conformal factor A, which greatly broadens the form of two-field mimetic constraint and thus extends the two-field mimetic gravity. We find the general setup still mimics the roles of dark matter at the cosmological background level. Moreover, we extend the action by introducing extra possible term for phenomenological interests. Surprisingly, some special cases are found to be equivalent to general relativity, k-essence theory and Galileon theory. Finally, we further extend the theory by allowing the expression of mimetic constraint to be arbitrary without imposed condition, and show that the dark matter-like behavior is unaffected even in this extension.
description: 17 pages, the version accepted by JHEP
Exotic Ising dynamics in a Bose-Hubbard model
Creators: name: Seabra, Luis
name: Pollmann, Frank
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We explore the dynamical properties of a one-dimensional Bose-Hubbard model, where two bosonic species interact via Feshbach resonance. We focus on the region in the phase diagram which is described by an effective, low-energy ferromagnetic Ising model in both transverse and longitudinal fields. In this regime, we numerically calculate the dynamical structure factor of the Bose-Hubbard model using the time-evolving block decimation method. In the ferromagnetic phase, we observe both the continuum of excitations and the bound states in the presence of a longitudinal field. Near the Ising critical point, we observe the celebrated E8 mass spectrum in the excited states. We also point out possible measurements which could be used to detect these excitations in an optical lattice experiment.
description: 5 pages, 3 figures, as published
title: Ανελαστική ανάλυση κατασκευών από οπλισμένο σκυρόδεμα και μελετη της αλληλεπίδρασης θεμελίωσης-ανωδομής
Creators: name: Νιταδωράκης Ευάγγελος Γ.
Publisher: name: Technical University of Crete
Year: 2011

description: Κεφ. 1: Δυναμική ανάλυση κατασκευών -- Κεφ. 2: Προσομοίωση της ανελαστικότητας των δομικών μελών -- Κεφ. 3: Ανελαστική ανάλυση χωρικών πλαισίων οπλισμένου σκυροδέματος -- Κεφ. 4: Αλληλεπίδραση εδάφους-κατασκευής -- Κεφ. 5: Διδιάστατη προσομοίωση και μελέτης αλληλεπίδρασης εδάφους-κατασκευής -- Κεφ. 6: Συμπεράσματα
The Interaction of Supernova 2018evt with a Substantial Amount of Circumstellar Matter -- An SN1997cy-like Event
Creators: name: Yang, Yi
name: Baade, Dietrich
name: Hoeflich, Peter
name: Wang, Lifan
name: Cikota, Aleksandar
name: Chen, Ting-Wan
name: Burke, Jamison
name: Hiramatsu, Daichi
name: Pellegrino, Craig
name: Howell, D. Andrew
name: McCully, Curtis
name: Valenti, Stefano
name: Schulze, Steve
name: Gal-Yam, Avishay
name: Wang, Lingzhi
name: Filippenko, Alexei V.
name: Maeda, Keiichi
name: Bulla, Mattia
name: Yao, Yuhan
name: Maund, Justyn R.
name: Patat, Ferdinando
name: Spyromilio, Jason
name: Wheeler, J. Craig
name: Rau, Arne
name: Hu, Lei
name: Li, Wenxiong
name: Andrews, Jennifer. E.
name: Galbany, Lluis
name: Sand, David. J.
name: Shahbandeh, Melissa
name: Hsiao, Eric Y.
name: Wang, Xiaofeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A rare class of supernovae (SNe) is characterized by strong interaction between the ejecta and several solar masses of circumstellar matter (CSM) as evidenced by strong Balmer-line emission. Within the first few weeks after the explosion, they may display spectral features similar to overluminous Type Ia SNe, while at later phase their observation properties exhibit remarkable similarities with some extreme case of Type IIn SNe that show strong Balmer lines years after the explosion. We present polarimetric observations of SN2018evt obtained by the ESO Very Large Telescope from 172 to 219 days after the estimated time of peak luminosity to study the geometry of the CSM. The nonzero continuum polarization decreases over time, suggesting that the mass loss of the progenitor star is aspherical. The prominent H$α$ emission can be decomposed into a broad, time-evolving component and an intermediate-width, static component. The former shows polarized signals, and it is likely to arise from a cold dense shell (CDS) within the region between the forward and reverse shocks. The latter is significantly unpolarized, and it is likely to arise from shocked, fragmented gas clouds in the H-rich CSM. We infer that SN2018evt exploded inside a massive and aspherical circumstellar cloud. The symmetry axes of the CSM and the SN appear to be similar. SN\,2018evt shows observational properties common to events that display strong interaction between the ejecta and CSM, implying that they share similar circumstellar configurations. Our preliminary estimate also suggests that the circumstellar environment of SN2018evt has been significantly enriched at a rate of $\sim0.1$ M$_\odot$ yr$^{-1}$ over a period of $>100$ yr.
description: 29 pages, 20 figures, 10 tables, accepted for publication in MNRAS
Demonstration, M. Wade
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Labor movement
Demonstrations

description: Labor/people's demonstration: female singing Utah Phillips' 'All Used Up', John Paul's 'The Anti-Carol', Malvina Reynolds' 'Sing Along'. Professor Louis? raps about New York/politics. Paul Gorman speaks. Mareetha Stewart sings 'Amazing Grace', 'This Little Light of Mine'
Enhanced antioxidant capacity prevents epitranscriptomic and cardiac alterations in adult offspring gestationally-exposed to ENM
Creators: name: Kunovac, Amina
name: Hathaway, Quincy A.
name: Pinti, Mark V.
name: Durr, Andrya J.
name: Taylor, Andrew D.
name: Goldsmith, William T.
name: Garner, Krista L.
name: Nurkiewicz, Timothy R.
name: Hollander, John M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: Developmental Biology

description: Maternal engineered nanomaterial (ENM) exposure during gestation has been associated with negative long-term effects on cardiovascular health in progeny. Here, we evaluate an epitranscriptomic mechanism that contributes to these chronic ramifications and whether overexpression of mitochondrial phospholipid hydroperoxide glutathione peroxidase (mPHGPx) can preserve cardiovascular function and bioenergetics in offspring following gestational nano-titanium dioxide (TiO2) inhalation exposure. Wild-type (WT) and mPHGPx (Tg) dams were exposed to nano-TiO2 aerosols with a mass concentration of 12.01 ± 0.50 mg/m3 starting from gestational day (GD) 5 for 360 mins/day for 6 nonconsecutive days over 8 days. Echocardiography was performed in pregnant dams, adult (11-week old) and fetal (GD 14) progeny. Mitochondrial function and global N6-methyladenosine (m6A) content were assessed in adult progeny. MPHGPx enzymatic function was further evaluated in adult progeny and m6A-RNA immunoprecipitation (RIP) was combined with RT-qPCR to evaluate m6A content in the 3′-UTR. Following gestational ENM exposure, global longitudinal strain (GLS) was 32% lower in WT adult offspring of WT dams, with preservation in WT offspring of Tg dams. MPHGPx activity was significantly reduced in WT offspring (29%) of WT ENM-exposed dams, but preserved in the progeny of Tg dams. M6A-RIP-qPCR for the SEC insertion sequence region of mPHGPx revealed hypermethylation in WT offspring from ENM-exposed WT dams, which was thwarted in the presence of the maternal transgene. Our findings implicate that m6A hypermethylation of mPHGPx may be culpable for diminished antioxidant capacity and resultant mitochondrial and cardiac deficits that persist into adulthood following gestational ENM inhalation exposure.
title: Χρηματοοικονομικά παράγωγα:
Creators: name: Μανιουδάκη Αικατερίνη
Publisher: name: Technical University of Crete
Year: 2011

description: Κεφ. 1: Πιθανότητα - τυχαίες μεταβολές - παράγωγα -- Κεφ. 2: Μέση τιμή -- Κεφ. 3: Δεσμευμένη πιθανότητα -- Κεφ. 4: Δεσμευμένη μέση τιμή -- Κεφ. 5: Martingale -- Κεφ. 6: Κίνηση Brown
On asymptotically hereditarily aspherical groups
Creators: name: Osajda, Damian
name: Swiatkowski, Jacek
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F65 (Primary), 20F69, 20F67 (Secondary)

description: We undertake a systematic study of asymptotically hereditarily aspherical (AHA) groups - the class of groups introduced by Tadeusz Januszkiewicz and the second author as a tool for exhibiting exotic properties of systolic groups. We provide many new examples of AHA groups, also in high dimensions. We relate AHA property with the topology at infinity of a group, and deduce in this way some new properties of (weakly) systolic groups. We also exhibit an interesting property of boundary at infinity for few classes of AHA groups.
description: 36 pages, minor modifications to v1
Large ion-neutral drift velocities and plasma heating in partially ionized coronal rain blobs
Creators: name: Martínez-Gómez, David
name: Oliver, Ramón
name: Khomenko, Elena
name: Collados, Manuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this paper we present a numerical study of the dynamics of partially ionized coronal rain blobs. We use a two-fluid model to perform a high-resolution 2D simulation that takes into account the collisional interaction between the charged and neutral particles contained in the plasma. We follow the evolution of a cold plasma condensation as it falls through an isothermal vertically stratified atmosphere that represents the much hotter and lighter solar corona. We study the consequences of the different degrees of collisional coupling that are present in the system. On the one hand, we find that at the dense core of the blob there is a very strong coupling and the charged and neutral components of the plasma behave as a single fluid, with negligible drift velocities (of a few cm s^-1). On the other hand, at the edges of the blob the coupling is much weaker and larger drift velocities (of the order of 1 km s^-1) appear. In addition, frictional heating causes large increases of temperature at the transition layers between the blob and the corona. For the first time we show that such large drift velocities and temperature enhancements can develop as a consequence of ion-neutral decoupling associated to coronal rain dynamics. This can lead to enhanced emission coming from the plasma at the coronal rain-corona boundary, which possesses transition region temperature.
description: 11 pages, 7 figures, and 1 animation. Accepted for publication in The Astrophysical Journal Letters
Refractory times for excitable dual state quantum dot laser neurons
Creators: name: Dillane, Michael
name: Viktorov, Evgeny A.
name: Kelleher, Bryan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Excitable photonic systems show promise for ultrafast analog computation, several orders of magnitude faster than biological neurons. Optically injected quantum dot lasers display several excitable mechanisms with dual state quantum lasers recently emerging as true all or none excitable artificial neurons. For use in applications, deterministic triggering is necessary and this has previously been demonstrated in the literature. In this work we analyse the crucially important \emph{refractory time} for this dual state system, which defines the minimum possible time between distinct pulses in any excitable pulse train. Ultrashort times on the order of 1~ns are obtained suggesting potential use where ultrafast analog computing is desired.
How well can we really estimate the stellar masses of galaxies from broadband photometry?
Creators: name: Mitchell, P. D.
name: Lacey, C. G.
name: Baugh, C. M.
name: Cole, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The estimated stellar masses of galaxies are widely used to characterize how the galaxy population evolves over cosmic time. If stellar masses can be estimated in a robust manner, free from any bias, global diagnostics such as the stellar mass function can be used to constrain the physics of galaxy formation. We explore how galaxy stellar masses, estimated by fitting broad-band spectral energy distributions (SEDs) with stellar population models, can be biased as a result of commonly adopted assumptions for the star-formation and chemical enrichment histories, recycled fractions and dust attenuation curves of galaxies. We apply the observational technique of broad-band SED fitting to model galaxy SEDs calculated by the theoretical galaxy formation model GALFORM, isolating the effect of each of these assumptions. We find that, averaged over the entire galaxy population, the common assumption of exponentially declining star-formation histories does not adversely affect stellar mass estimation. We show that fixing the metallicity in SED fitting or using sparsely sampled metallicity grids can introduce mass dependent systematics into stellar mass estimates. We find that the common assumption of a star-dust geometry corresponding to a uniform foreground dust screen can cause the stellar masses of dusty model galaxies to be significantly underestimated. Finally, we show that stellar mass functions recovered by applying SED fitting to model galaxies at high redshift can differ significantly in both shape and normalization from the intrinsic mass functions predicted by a given model. Given these differences, our methodology of using stellar masses estimated from model galaxy SEDs offers a new, self-consistent way to compare model predictions with observations.
description: 29 pages, 16 Figures, changed to match published MNRAS version
Simulation of a feeder on a port to port mission
Creators: name: Van Daalen, Ed
name: Iavicoli, Giorgio
name: Cozijn, Hans
name: De Kruif, Bas
Publisher: name: Zenodo
Year: 2023

description: OCEANS 2023 is an event for global maritime professionals to learn, innovate, and lead in the
 protection and utilization of the world’s largest natural resource – our Oceans. OCEANS 2023 took place between the 05th-08th of June 2023, in Limerick, under the theme ‘Blue Ocean Planet Earth‘. OCEANS is a bi-annual event for global marine technologists, engineers, students, government officials, lawyers, and advocates. The OCEANS conference is the flagship event of the Marine Technology Society (MTS) and the IEEE Oceanic Engineering Society (OES). The conference is recognized as the premier forum for the international marine community to meet and discuss relevant topics and current trends while creating a community of learners and influencers who consistently advance research, practices, and policies for the marine field. OCEANS features an associated trade exhibition with companies and institutions representing the wide range of activities found in the marine community. The conference agenda is available here. MOSES was represented by MARIN colleagues who presented the paper "Simulation of a feeder on a port-to-port mission".
title: Διακοινοτικές σχέσεις σε διαιρεμένες πόλεις : η περίπτωση της Λευκωσίας
Creators: name: Χρυσοστομου Κωνσταντινα
Publisher: name: Technical University of Crete
Year: 2013

description: Η ερευνητική εργασία διαπραγματεύεται το πώς δυο διαφορετικά κοινωνικά και εθνικά σύνολα ενώ αρχικά συνυπάρχουν μέσα σε μια πόλη , μετέπειτα έρχονται σε ρήξη με αποτέλεσμα την χωρική διαίρεση της πόλης.
Πιο συγκεκριμένα εξετάζει του τύπους των διαιρεμένων πόλεων και πως αυτοί προέκυψαν με τη πάροδο του χρόνου, ποιες είναι οι αιτίες που οδήγησαν σε αυτό το αποτέλεσμα και πως αυτές οι δυο κοινωνίες το αφομοιώνουν. Στη συνέχεια μελετά το πώς κάποιες πόλεις μπορούν να λειτουργήσουν καλύτερα εφόσον είναι διαιρεμένες ενώ η πλειοψηφία αυτών, βρίσκεται σε ατέρμονη εμπόλεμη κατάσταση. Ποιες είναι οι επιπτώσεις της «διαιρεμένης πόλης» στον αστικό χώρο και στο μέλλον της κοινωνίας, και με ποιο τρόπο θα μπορούσε να «συρραφεί» με το καλύτερο δυνατό τρόπο ο αστικός ιστός.
Μετέπειτα εξετάζεται πως με την διαίρεση της πόλης, παραβιάζεται η αστική συμφωνία της πόλης και ποιες είναι οι επακόλουθες συνέπειες. Αναλύεται το πώς μπορεί να αντιμετωπισθεί η διαίρεση, ποιες στρατηγικές συμμόρφωσης είναι κατάλληλες και ποιες πρέπει να είναι προς αποφυγή προκειμένου να συνδεθεί όσο το δυνατόν καλύτερα τόσο η κοινωνία όσο και ο χώρος. Γίνεται αναφορά στα παραδείγματα διαιρεμένων πόλεων και στη βασική ακολουθία για την εξέλιξη των καταστάσεων, φωτογραφίζοντας το γενικό προφίλ της διαιρεμένης πόλης.
Τέλος η ερευνητική επικεντρώνεται στη πόλη της Λευκωσίας, η οποία μετά την εισβολή του 1974 έχει διχοτομηθεί από την «Πράσινη Γραμμή», όχι μόνο χωρικά, αλλά και κοινωνικά, οικονομικά και πολιτιστικά. Θα εξετασθεί η σημερινή κατάσταση της πρωτεύουσας σε σχέση με την προπολεμική, όπου ήταν ενιαία και θα αναλυθούν τα χαρακτηριστικά της πόλης και της κοινωνίας ευρύτερα. Θα γίνει αναφορά στα σημερινά μικτά χωριά και πως αυτά λειτουργούν, θεωρούμενα ως μικρογραφία του συστήματος της χώρας. Ακόμη θα μελετηθεί με ποιο τρόπο η Πράσινη Γραμμή αφομοιώνεται από τις δυο πλευρές και πώς την αντιμετωπίζουν οι κάτοικοι από τις κοινότητες εκατέρωθεν, καθώς και ποια θα ήθελαν να είναι η εξέλιξη της στο μέλλον.
Assessing the theory-data tension in neutrino-induced charged pion production: the effect of final-state nucleon distortion
Creators: name: Nikolakopoulos, Alexis
name: González-Jiménez, Raúl
name: Jachowicz, Natalie
name: Udías, José Manuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Pion production on nuclei constitutes a significant part of the total cross section in experiments involving few-GeV neutrinos. Combined analyses of data on deuterium and heavier nuclei points to tensions between the bubble chamber data and the data of the MINER$ν$A experiment, which are often ascribed to unspecified nuclear effects. To understand the origin of these tensions, a microscopic quantum mechanical framework is needed to compute nuclear matrix elements. We use the local approximation to the relativistic distorted wave impulse approximation (RDWIA) to assess the role of final-state nucleon distortion. To perform this comparison under conditions relevant to neutrino experiments, we compute cross sections for the MINER$ν$A and T2K charged pion production datasets. The inclusion of nucleon distortion leads to a reduction of the cross section up to 10\%, but to no significant change in shape of the flux-averaged cross sections. Results with and without distortion compare favorably to experimental data, with the exception of the low-$Q^2$ MINER$ν$A $π^+$ data. We point out that hydrogen target data from BEBC is also overpredicted at low-$Q^2$, and that the discrepancy is similar in shape and magnitude to what is found in comparison to MINER$ν$A data. Including nucleon distortion alone cannot explain the overprediction of low-$Q^2$ cross sections measured by MINER$ν$A. The similar overprediction of BEBC data on hydrogen means that it is impossible to ascribe this discrepancy solely to a nuclear effect. Axial couplings and their $Q^2$ dependence should ideally be derived from more precise data on hydrogen and deuterium.