cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comparing the dynamics of Jupiter-family Comets and comet-like fireballs
Creators: name: Shober, P. M.
name: Tancredi, G.
name: Vaubaillon, J.
name: Devillepoix, H. A. R.
name: Deam, S.
name: Anghel, S.
name: Sansom, E. K.
name: Colas, F.
name: Martino, S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context. Jupiter-family comets (JFCs), which originate from the Kuiper belt and scattered disk, exhibit low-inclination and chaotic trajectories due to close encounters with Jupiter. Despite their typically short incursions into the inner solar system, a notable number of them are on Earth-crossing orbits, with fireball networks detecting many objects on ``JFC-like'' (2 < TJ < 3) orbits. Aims. This investigation aims to examine the orbital dynamics of JFCs and comet-like fireballs over 10,000 yr timescales, focusing on the trajectories and stability of these objects in the context of gravitational interactions within the solar system. Methods. We employed an extensive fireball dataset from the Desert Fireball Network (DFN), European Fireball Network (EFN), Fireball Recovery and InterPlanetary Observation Network (FRIPON), and Meteorite Observation and Recovery Project (MORP), alongside telescopically observed cometary ephemeris from the NASA HORIZONS database. The study integrates 646 fireball orbits with 661 JFC orbits for a comparative analysis of their orbital stability and evolution. Results. The analysis confirms frequent Jupiter encounters among most JFCs, inducing chaotic orbital behavior with limited predictability and short Lyapunov lifetimes (about 120 years), underscoring Jupiter`s significant dynamical influence. In contrast, ``JFC-like'' meteoroids detected by fireball networks largely exhibit dynamics divergent from genuine JFCs, with 79-92% on ``JFC-like'' orbits shown not to be prone to frequent Jupiter encounters; in particular, only 1-5% of all fireballs detected by the four networks exhibit dynamics similar to that of actual JFCs. In addition, 22% (16 of 72) of near-Earth JFCs are on highly stable orbits, suggesting a potential main belt origin for some of the bodies.
description: Published in Astronomy & Astrophysics (31 pages, 21 figures)
Collision detection for rigid superellipsoids using the normal parameterization
Creators: name: Römer, Ulrich J.
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021

description: The normal parameterization as an approach to describe geometries is introduced. The advantages of this description – as compared to other parameterizations or implicit functions – in the context of collision detection are: the possibility to explicitly calculate axis aligned bounding boxes for any convex geometry, an efficient iterative algorithm for collision detection between objects with arbitrary geometry that does not require any (analytical) derivatives. A system of several rigid superellipsoids is used to demonstrate the application and performance of the proposed approach in a multibody simulation.
Medienbildung und informatische Bildung
Creators: name: Reiter, Anton
Publisher: name: Medienimpulse
Year: 2015

description: Ausgehend von einer begrifflich öfters synonymen Verwendung der Termini Medienbildung und informatische Bildung in Arbeits- und Grundsatzpapieren, wissenschaftlichen Veröffentlichungen und Debatten bei Tagungen mit Repräsentanten aus beiden Lagern wird im folgenden Beitrag unter Bezug auf aktuelle Untersuchungen, programmatische Konzepte und Vorhaben im Bildungsbereich eine Differenzierung vorgenommen. Angesichts der Bedeutung der neuen Medien für die heutige Generation sind sich Medienpädagogen und Informatiker einig: Der Erwerb einer umfassenden digitalen Medienkompetenz für alle ist eine gesamtgesellschaftliche Aufgabe. Das für beide Fachbereiche gemeinsame Leitmotiv lautet: Keine Bildung ohne neue Medien!
description: Medienimpulse, Bd. 53 Nr. 2 (2015): 2/2015 - Begründungen und Ziele der Medienbildung
Present Status Of The Experiment On The Search For Dark Photons By Multi-Cathode Counter
Creators: name: Kopylov, A.
name: Orekhov, I.
name: Petukhov, V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In this paper we describe the apparatus used in this experiment and the procedure of data treatment. We give the latest experimental results and discuss the possibility to observe diurnal variations of the count rates due to rotation of the Earth. We outline our future plans.
description: 9 pages, 6 figures
title: There Goes the Neighborhood: Combatting Displacement in Richmond’s Historically Black Neighborhoods
Creators: name: Williams, Mariah
Publisher: name: Richmond Racial Equity Essays
Year: 2021

description: This is essay number 5 from the book Richmond Racial Equity Essays, edited by Ebony Walden and Meghan Z. Gough. It appears on pages 21-24 of the book in the section "Building and Sustaining Affordable Housing." The author examines the national trend in gentrifying legacy Black cities and neighborhoods across the country (wealthy, white families moving to non-white, predominantly Black neighborhoods). As the city of Richmond undergoes significant transition, achieving racial equity means implementing policies to combat involuntary displacement of Black residents and to preserve the culture embedded within historic Black communities. Creating an equitable Richmond means being intentional about promoting policies that combat involuntary displacement, ensuring that Black households truly have a choice in remaining in their communities and that they can reap the benefits of reinvestment as much as their white counterparts.
On absolutely continuous spectrum for one-channel unitary operators
Creators: name: Bourget, Olivier
name: Moreno, Gregorio
name: Sadel, Christian
name: Taarabt, Amal
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 47B15, 47B36, 82B44

description: In this paper, we develop the radial transfer matrix formalism for unitary one-channel operators. This generalizes previous formalisms for CMV matrices and scattering zippers. We establish an analog of Carmona's formula and deduce criteria for absolutely continuous spectrum which we apply to random Hilbert Schmidt perturbations of periodic scattering zippers.
description: 36 pages, 5 figures
Analytic forms for the $e^+e^-$ annihilation cross sections around a resonance including initial state radiation
Creators: name: Liu, Baoxin
name: Zhang, Zhenyu
name: Zhou, Xiang
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The exact analytic form of cross sections including initial state radiation with Kuraev-Fadin radiative function are obtained for $e^+e^-$ annihilation around a resonance. Despite accounting for vacuum polarization and center-of-mass energy spread effects, the precision remains below 0.1\%, meeting the accuracy requirements of quantum electrodynamics corrections up to $\mathcal{O}(α^2)$. The analytic forms lead to an enhancement in the precision of experimental measurements of physical parameters, such as branching fractions, and demonstrate significantly improved computational efficiency in the regression procedures.
description: 23 pages, 6 figures
Experimental Validation of Collision-Radiation Dataset for Molecular Hydrogen in Plasmas
Creators: name: Fujii, Keisuke
name: Sawada, Keiji
name: Arseniy, Kuzmin
name: Goto, Motoshi
name: Kobayashi, Masahiro
name: Scarlett, Liam H.
name: Fursa, Dmitry V.
name: Bray, Igor
name: Zammit, Mark C.
name: Biewer, Theodore M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Quantitative spectroscopy of molecular hydrogen has generated substantial demand, leading to the accumulation of diverse elementary-process data encompassing radiative transitions, electron-impact transitions, predissociations, and quenching. However, their rates currently available are still sparse and there are inconsistencies among those proposed by different authors. In this study, we demonstrate an experimental validation of such molecular dataset by composing a collisional-radiative model (CRM) for molecular hydrogen and comparing experimentally-obtained vibronic populations across multiple levels. From the population kinetics of molecular hydrogen, the importance of each elementary process in various parameter space is studied. In low-density plasmas (electron density $n_\mathrm{e} \lesssim 10^{17}\;\mathrm{m^{-3}}$) the excitation rates from the ground states and radiative decay rates, both of which have been reported previously, determines the excited state population. The inconsistency in the excitation rates affects the population distribution the most significantly in this parameter space. On the other hand, in higher density plasmas ($n_\mathrm{e} \gtrsim 10^{18}\;\mathrm{m^{-3}}$), the excitation rates \textit{from} excited states become important, which have never been reported in the literature, and may need to be approximated in some way. In order to validate these molecular datasets and approximated rates, we carried out experimental observations for two different hydrogen plasmas; a low-density radio-frequency (RF) heated plasma ($n_\mathrm{e}\approx 10^{16}\;\mathrm{m^{-3}}$) and the Large Helical Device (LHD) divertor plasma ($n_\mathrm{e}\gtrsim 10^{18}\;\mathrm{m^{-3}}$)... [continued]
Transform Tectonics and Non-Volcanic Oceanic Islands
Dinamica trasforme e formazione di isole oceaniche non-vulcaniche
Creators: name: Palmiotto, Camilla <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: GEO/03 Geologia strutturale

description: Oceanic islands can be divided, according to their origin, in volcanic and tectonic. Volcanic islands are due to excess volcanism. Tectonic islands are mainly formed due to vertical tectonic motions of blocks of oceanic lithosphere along transverse ridges flanking transform faults at slow and ultraslow mid-ocean ridges. Vertical tectonic motions are due to a reorganization of the geometry of the transform plate boundary, with the transition from a transcurrent tectonics to a transtensive and/or transpressive tectonics, with the formation of the transverse ridges. Tectonic islands can be located also at the ridge–transform intersection: in this case the uplift is due by the movement of the long-lived detachment faults located along the flanks of the mid-ocean ridges. 
The "Vema" paleoisland (equatorial Atlantic) is at the summit of the southern transverse ridge of the Vema transform. It is now 450 m bsl and it is capped by a carbonate platform  500 m-thick, dated by 87Sr/86Sr at 10 Ma. Three tectonic paleoislands are on the summit of the transverse ridge flanking the Romanche megatrasform (equatorial Atlantic). They are now about 1,000 m bsl and they are formed by 300 m-thick carbonate platforms dated by 87Sr/86Sr, between 11 and 6 Ma. The tectonic paleoisland “Atlantis Bank" is located in the South-Western Indian Ridge, along the Atlantis II transform, and it is today 700 m bsl. The only modern example of oceanic tectonics island is the St. Paul Rocks (equatorial Atlantic), located along the St. Paul transform. This archipelago is the top of a peridotitic massif that it is now a left overstep undergoing transpression. 
Oceanic volcanic islands are characterized by rapid growth and subsequent thermal subsidence and drowning; in contrast, oceanic tectonic islands may have one or more stages of emersion related to vertical tectonic events along the large oceanic fracture zones.
Targeting (Pseudo)-Scalar CP Violation with $B_s \to μ^+μ^-$
Creators: name: Fleischer, Robert
name: Malami, Eleftheria
name: Rehult, Anders
name: Vos, K. Keri
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The leptonic decay $B_s \to μ^+μ^-$ is both rare and theoretically clean, making it an excellent probe for New Physics searches. Due to its helicity suppression in the Standard Model, this decay is particularly sensitive to new (pseudo)-scalar contributions. We present a new strategy for detecting CP-violating New Physics contributions of this kind, exploiting two observables: $\mathcal{A}_{ΔΓ_s}^{μμ}$, which is accessible due to the sizeable decay width difference of the $B_s$ system, and the mixing-induced CP asymmetry $\mathcal{S}_{μμ}$. The strategy also uses information from $B\to K^{(*)} μ^+μ^-$ and $B_s\to ϕμ^+μ^-$ decays. We find remarkably constrained regions in the $\mathcal{A}_{ΔΓ_s}^{μμ}$-$\mathcal{S}_{μμ}$ plane that serve as promising targets for future measurements.
description: 21 pages, 7 figures. Matches version published in JHEP
Die semantische Ordnung der Dinge im Web.
Creators: name: Swertz, Christian
Publisher: name: Medienimpulse
Year: 2015

description: Die zentrale These dieses Beitrags ist, dass das WWW im Interesse der Bildung des Menschen genutzt werden kann, eine solche Nutzung aber aus historischen Gründen eher selten ist. Der Beitrag entwickelt Gestaltungs- und Reflexionsoptionen im Interesse einer produktiven Rekombination von Services und des progressiven Designs der medialen Infrastruktur des WWW und empfiehlt eine solidarische Kooperation zwischen Informatik und Pädagogik, um eine reflektierte Gestaltung zu implementieren.
description: Medienimpulse, Bd. 53 Nr. 2 (2015): 2/2015 - Begründungen und Ziele der Medienbildung
"Was haben wir denn eigentlich gelernt?"
Creators: name: Mayer, Sabine
Publisher: name: Medienimpulse
Year: 2015

description: An der KPH Wien/Krems in Kooperation mit dem Medienzentrum Wien Xtra über das Kommunikationsverhalten von Jugendlichen zeigte sich bei der Frage: "In der Schule wurde mir beigebracht, wie man diskutiert", nur wenig Zustimmung der befragten Jugendlichen. Der Artikel "Was haben wir denn eigentlich gelernt?" beschäftigt sich mit dem subjektiven Empfinden von Jugendlichen Lerninhalte betreffend und sucht Ansätze über das Umfeld der Jugendlichen diese auch nachhaltig zu verankern.
description: Medienimpulse, Bd. 53 Nr. 2 (2015): 2/2015 - Begründungen und Ziele der Medienbildung
MOOCs – ein Schritt zurück, ein Schritt nach vor?
Creators: name: Güttl-Strahlhofer, Angelika
Publisher: name: Medienimpulse
Year: 2015

description: Medienimpulse, Bd. 53 Nr. 2 (2015): 2/2015 - Begründungen und Ziele der Medienbildung
Correlation effects in total energy of transition metals and related properties
Creators: name: Di Marco, I.
name: Minár, J.
name: Chadov, S.
name: Katsnelson, M. I.
name: Ebert, H.
name: Lichtenstein, A. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an accurate implementation of total energy calculations into the local density approximation plus dynamical mean-field theory (LDA+DMFT) method. The electronic structure problem is solved through the full potential linear Muffin-Tin Orbital (FP-LMTO) and Korringa-Kohn-Rostoker (FP-KKR) methods with a perturbative solver for the effective impurity suitable for moderately correlated systems. We have tested the method in detail for the case of Ni and investigated the sensitivity of the results to the computational scheme and to the complete self-consistency. It is demonstrated that the LDA+DMFT method can resolve a long-standing controversy between the LDA/GGA density functional approach and experiment for equilibrium lattice constant and bulk modulus of Mn.
description: 14 pages, 5 figures
title: A Rich Education
Creators: name: Campbell, Benjamin P.
Publisher: name: Richmond Racial Equity Essays
Year: 2021

description: This is essay number 6 from the book Richmond Racial Equity Essays, edited by Ebony Walden and Meghan Z. Gough. It appears on pages 27-30 of the book in the section "Ensuring Educational Equity." The author outlines the background of Richmond (and Virginia)'s educational inequity, stating that the most direct route to racial equity in metropolitan Richmond is what he calls a Rich Education for all, by way of Rich Schools. He demonstrates how poverty must be addressed to bring about racial equity, by first addressing educational equity, which must address educational wealth.
Grundbildung Medien für alle pädagogischen Fachkräfte
Creators: name: Fries, Rüdiger
name: Kommer, Sven
Publisher: name: Medienimpulse
Year: 2015

description: Das folgende Positionspapier wurde von der Initiative "Keine Bildung ohne Medien" entwickelt und im November 2014 auf dem GMK-Kongress "Doing politics: Politisch agieren in der digitalen Gesellschaft – Konzepte und Strategien der Medienpädagogik und Medienbildung" [1] in einem Workshop mit Vertretern verschiedener Praxisfelder diskutiert. Grundpositionen des Papieres fanden Eingang in die Pressemitteilung [2] vom 27.11.2014.
description: Medienimpulse, Bd. 53 Nr. 2 (2015): 2/2015 - Begründungen und Ziele der Medienbildung
Stählernes Insektenzeitalter. Zu Jacques Tardis und Benjamin Legrands Tueur de cafards/Der Kakerlakenkiller.
Creators: name: Ballhausen, Thomas
Publisher: name: Medienimpulse
Year: 2013

description: Mit Der Kakerlakenkiller (1984) haben Jacques Tardi und der Szenarist Benjamin Legrand ein Werk geschaffen, das immer noch begeistert und verstört. Das für ihre Arbeit zentrale Spiel mit Genrekonventionen und Erwartungshaltungen macht es notwendig, es im Kontext von Enki Bilals und Jean-Pierre Dionnets Exterminator 17 (1977) und Moebius’ Die Hermetische Garage (1976-1980) zu sehen und wohl auch zu lesen. Ein Versuch der erneuten Aufschlüsselung.
description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
TOVAR BELGILARI VA XIZMAT KO'RSATISH BELGILARINI RO'YXATDAN O'TKAZISHDA TALABNOMA TOPSHIRISHGA DOIR TALABLAR
Creators: name: Razzoqova, Flora
name: Rahimjonov, Akmaljon
Publisher: name: Zenodo
Year: 2025

description: Ushbu ilmiy maqola tovar belgilari va xizmat ko‘rsatish belgilarini ro‘yxatdan o‘tkazish jarayonini, shu jumladan talabnoma topshirishga doir talablarni chuqur tahlil qiladi. Tovar belgilari va xizmat ko‘rsatish belgilarining huquqiy himoyasi, ro‘yxatga olishning ahamiyati, hujjatlar va talablar haqida batafsil ma’lumot berilgan.
Kurze, aber nackte Geschichte der Malerei in den Comics
Creators: name: Caneppele, Paolo
name: Krenn, Günter
Publisher: name: Medienimpulse
Year: 2014

description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
High Discrimination Ratio, Broadband Circularly Polarized Light Photodetector Using Dielectric Achiral Nanostructures
Creators: name: Zhang, Guanyu
name: Lyu, Xiaying
name: Qin, Yulu
name: Li, Yaolong
name: Fan, Zipu
name: Meng, Xianghan
name: Cheng, Yuqing
name: Cao, Zini
name: Xu, Yixuan
name: Sun, Dong
name: Gao, Yunan
name: Gong, Qihuang
name: Lu, Guowei
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The on-chip measurement of polarization states plays an increasingly crucial role in modern sensing and imaging applications. While high-performance monolithic linearly polarized photodetectors have been extensively studied, integrated circularly polarized light (CPL) photodetectors are still hindered by inadequate discrimination capability. In this study, we employ achiral all-dielectric nanostructures to develop a broadband CPL photodetector with an impressive discrimination ratio of ~107 at the wavelength of 405 nm, significantly surpassing its counterparts by two orders of magnitude. Our device shows outstanding CPL discrimination capability across the visible band without requiring intensity calibration. Its function mechanism is based on the CPL-dependent near-field modes within achiral structures: under left or right CPL illumination, distinct near-field modes are excited, resulting in asymmetric irradiation of the two electrodes and generating a photovoltage with directions determined by the chirality of the incident light field. The proposed design strategy facilitates the realization of ultra-compact CPL detection across diverse materials, structures, and spectral ranges, presenting a novel avenue for achieving high-performance monolithic CPL detection.
description: 20 pages, 4 figures
Das Methodenkonzept "Vom Nowland zum Nextland" : zur pro-aktiven Mitgestaltung digitaler Transformationen in Organisationen
Creators: name: Päplow, Vanessa
name: Röwert, Ronny
name: Ladwig, Tina Jessica
name: Klaffke, Henning
Publisher: name: Technische Universität Hamburg, ITBH
Year: 2021
Subjects: subject: Digitalisierung
subject: Transformation
subject: Strukturwandel
subject: Kulturwandel
subject: Methode
subject: Organisation
classificationCode: 370
subject: Erziehung, Schul- und Bildungswesen

description: Der digitale Strukturwandel stellt Unternehmen vor große Herausforderungen. Diese komplexen Herausforderungen zu beschreiben und dabei die richtigen Begriffe und Konzepte zu verwenden ist meist sehr schwierig. Das hier vorgestellte Methodenkonzept zur Gestaltung des Strukturwandels gibt den Akteur:innen Bilder und Symbole an die Hand, um die Veränderungen vereinfacht zu beschreiben und mögliche Wege zur Transformation aufzuzeigen.
description: The digital change confronts companies with major challenges. Describing these complex challenges while using the right terms and concepts is usually very difficult. The method “from nowland to nextland” presented in this paper helps the actors of the transformation to design the structural change in a simplified manner by using pictures and symbols to show possible ways of transformation.
Tagungsbericht: Gestirnte Kuppeln. Wie KulturwissenschaftlerInnen den Weltinnenraum des Planetariums erforschen
Creators: name: Sprenger, Florian
Publisher: name: Medienimpulse
Year: 2013

description: Medienimpulse, Bd. 51 Nr. 3 (2013): 3/2013 - Visuelle Historiografien/Comics zwischen Reflexion und Konstruktion von Geschichte(n)
Magnetized Accretion onto and Feedback from Supermassive Black Holes in Elliptical Galaxies
Creators: name: Guo, Minghao
name: Stone, James M.
name: Quataert, Eliot
name: Kim, Chang-Goo
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present three-dimensional magnetohydrodynamic (MHD) simulations of the fueling of supermassive black holes in elliptical galaxies from a turbulent cooling medium on galactic scales, taking M87* as a typical case. We find that the mass accretion rate is increased by a factor of $\sim 10$ compared with analogous hydrodynamic simulations. The scaling of $\dot{M} \sim r^{1/2}$ roughly holds from $\sim 10\,\mathrm{pc}$ to $\sim 10^{-3}\,\mathrm{pc}$ ($\sim 10\, r_\mathrm{g}$) with the accretion rate through the event horizon being $\sim 10^{-2}\, M_\odot\,\mathrm{yr^{-1}}$. The accretion flow on scales $\sim 0.03-3\,\mathrm{kpc}$ takes the form of magnetized filaments. Within $\sim 30\,\mathrm{pc}$, the cold gas circularizes, forming a highly magnetized ($β\sim 10^{-3}$) thick disk supported by a primarily toroidal magnetic field. The cold disk is truncated and transitions to a turbulent hot accretion flow at $\sim0.3\,\mathrm{pc}$ ($10^3\,r_\mathrm{g}$). There are strong outflows towards the poles driven by the magnetic field. The outflow energy flux increases with smaller accretor size, reaching $\sim 3\times10^{43}\,\mathrm{erg\,s^{-1}}$ for $r_\mathrm{in}=8\,r_\mathrm{g}$; this corresponds to a nearly constant energy feedback efficiency of $η\sim0.05-0.1$ independent of accretor size. The feedback energy is enough to balance the total cooling of the M87/Virgo hot halo out to $\sim 50$ kpc. The accreted magnetic flux at small radii is similar to that in magnetically arrested disk models, consistent with the formation of a powerful jet on horizon scales in M87. Our results motivate a subgrid model for accretion in lower-resolution simulations in which the hot gas accretion rate is suppressed relative to the Bondi rate by $\sim (10r_\mathrm{g}/r_\mathrm{B})^{1/2}$.
description: 23 pages, 14 figures, Accepted for publication in ApJ
title: Toward a Vision of Racial Equity in Richmond Schools
Creators: name: Cooper, Taikein
name: Siegel-Hawley, Genevieve
Publisher: name: Richmond Racial Equity Essays
Year: 2021

description: This is essay number 7 from the book Richmond Racial Equity Essays, edited by Ebony Walden and Meghan Z. Gough. It appears on pages 31-34 of the book in the section "Ensuring Educational Equity." The authors present their vision for racial equity in Richmond schools, including real integration, enabled by stronger and more inclusive advocacy. It is based on their collective personal and professional experiences, research, and best practices from around the country. They believe these strategies will lead us toward greater racial equity in Richmond and the education all of our children deserve.
The first VLBI image of an Infrared-Faint Radio Source
Creators: name: Middelberg, E.
name: Norris, R. P.
name: Tingay, S.
name: Mao, M. Y.
name: Phillips, C. J.
name: Hotan, A. W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: To investigate the joint evolution of active galactic nuclei and star formation in the Universe. Aims: In the 1.4 GHz survey with the Australia Telescope Compact Array of the Chandra Deep Field South and the European Large Area ISO Survey - S1 we have identified a class of objects which are strong in the radio but have no detectable infrared and optical counterparts. This class has been called Infrared-Faint Radio Sources, or IFRS. 53 sources out of 2002 have been classified as IFRS. It is not known what these objects are. Methods: To address the many possible explanations as to what the nature of these objects is we have observed four sources with the Australian Long Baseline Array. Results: We have detected and imaged one of the four sources observed. Assuming that the source is at a high redshift, we find its properties in agreement with properties of Compact Steep Spectrum sources. However, due to the lack of optical and infrared data the constraints are not particularly strong.
description: Accepted for publication in Astronomy and Astrophysics, 5 pages, needs aa.cls
Praxisleitfaden: Einsatzszenarien des digital.learning.lab in der universitären Lehrkräftebildung
Creators: name: Röwert, Ronny
name: Lehmann, Annett
name: Klaffke, Henning
Publisher: name: TUHH Universitätsbibliothek
Year: 2020
Subjects: subject: Lehrkräftebildung
subject: Digitalisierung
subject: OER
subject: Digitalkompetenzen
subject: Bildungsplattform
classificationCode: 370
subject: Erziehung, Schul- und Bildungswesen

description: Digitale Medien versprechen Potenziale, um einerseits neue Lernwege zu ermöglichen sowie Lernprozesse zu unterstützen und auf der anderen Seite Schüler:innen auf eine immer stärker digitalisierte Lebens- und Arbeitswelt vorzubereiten. Die Lehrkräftebildung ist dabei in allen Phasen gefordert, angehende und erfahrene Lehrkräfte dabei zu unterstützen, zeitgemäße Formen der Unterrichsgestaltung mit digitalen Möglichkeiten kennnezulernen und anzuwenden. Der Praxisleitfadden zeigt anhang konkreter erprobter Einsatzszenarien im Rahmen der universitären Lehrkräftebildung auf, wie sich das digital.learning.lab als offene Plattform für die Unterrichtsgestaltung in digitalen Zeiten in der Lehrkräftebildung weiter phasen- und bundeslandübergreifend verankern lässt.
description: New digital technologies promise potentials to enable new ways of learning and support individual learning processes to prepare learners for an increasingly digitalised living and working environment. Teacher education is asked in all phases to support prospective and experienced teachers in raising awareness for contemporary forms of teaching with digital possibilities. This practical guide elaborates on proven application scenarios in German university teacher education, how the digital.learning.lab can be further embedded in teacher education as an open platform for the development of teaching concepts in the digital age.
MODERN TECHNOLOGIES IN DIAGNOSTICS FUNCTIONAL DISORDERS OF THE TEMPOROMANDIBULAR JOINT
Creators: name: Xaydarov Ulug'bek Axmedov Alisher Astanovich Samarkand State Medical University
Publisher: name: Zenodo
Year: 2024

description: Temporomandibular joint dysfunction is characterized by a wide prevalence, polypathogenicity, progressive course and high recurrence rate. This complex of features of the disease puts the dysfunction of the temporomandibular joint among the most important problems of general medicine . Various concepts and approaches to the analysis of the etiology of temporomandibular joint dysfunction have led to a growing interest in the search for highly informative diagnostic methods, especially at the preclinical symptomatic stage. The purpose of this study was to analyze the possibilities of modern techniques in the diagnosis of temporomandibular joint dysfunction.

Keywords: dysfunction, temporomandibular joint, teleroentgenography, computed tomography, magnetic resonance imaging
Structuring and Provision of Manufacturing knowledge through the Manufacturing Resource Ontology
Creators: name: Wawer, Max Leo
name: Herrmann, Kevin
name: Plappert, Stefan
name: Wurst, Johanna
name: Gembarski, Paul Christoph
name: Lachmayer, Roland
Publisher: name: Erlangen : Ehemaligennetzwerk des Lehrstuhls für Konstruktionstechnik (KTmfk) Erlangen e.V.
Year: 2023
Subjects: subject: design for manufacturing
subject: ontology
subject: manufacturing knowledge
subject: manufacturing resource
subject: computer aided engineering
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: One challenge in manufacturing-integrated product development is the accessibility of the required manufacturing knowledge. Here, ontologies offer the possibility to structure and formalize information in the form of a knowledge base in order to act as a generic interface to the manufacturing and design specific systems. This paper describes the development of a generic knowledge base called MARON (MAnufacturing Restriction ONtology) for the structured representation of manufacturing restrictions via formalized manufacturing capabilities. Using the example of an expert system for process element-oriented manufacturability analysis, it is shown how MARON contributes to automated decision support in the context of manufacturing-oriented design.
Begleitung eines agilen Lernprozesses bei kleineren und mittleren Unternehmen : ein Diskussionspapier
Creators: name: Klaffke, Henning
name: Kortegast, Vanessa
name: Greve, Thomas
Publisher: name: Technische Universität Hamburg, ITBH
Year: 2021
Subjects: subject: Agiler Lernprozess
subject: KMU, kleine und mittlere Unternehmen
subject: Digitale Transformation
classificationCode: 330
subject: Wirtschaft
classificationCode: 370
subject: Erziehung, Schul- und Bildungswesen

description: In dieser Veröffentlichung wird die Begleitung eines agilen Lernprozesses bei kleinen und mittleren Unternehmen durch die Integration einer Lernkoordination mithilfe des vorgestellten Frameworks konzeptionell beschrieben und mit konkreten Vorgehensweisen, Beispielen und Erfahrungen konkretisiert. In dem Framework nimmt die Lernkoordination eine Schnittstellenfunktion zwischen den Mitarbeiter:innen eines Unternehmens sowie dem Unternehmen und externen Know-How-Träger:innen ein und unterstützt und begleitet damit den agilen Lernprozess im Unternehmen. Kennzeichnend für das Framework ist die Berücksichtigung der Anforderungen an Lernsysteme im 21. Jahrhundert, die Charakteristik agiler Lernprozesse sowie die Praxiserfahrungen aus dem Projekt DigiNet.Air, die sich durch iterative und lernendenzentrierte Phasen widerspiegeln. Grundsätzlich wird gezeigt, dass das Framework konzeptionell den beschriebenen Anforderungen von Unternehmen an zeitgemäße Weiterbildungsangebote gerecht werden kann.
description: In this publication, the introduction of an agile learning process in small and medium-sized companies through the integration of learning coordination is shown together with a combination of scientific support with pracitcal procedures, examples and experiences. It is a framework, thats shows how learning coordination takes act as interfaces between employees of a company as well as the company and external know-how carriers. The framework is characterized by the consideration of the requirements for learning systems in the 21st century, the characteristics of agile learning processes and the practical experience from the DigiNet.Air project. Basically, it is shown that the framework can conceptually meet the requirements of companies for modern training offers.
The computational complexity of traditional Lattice-Boltzmann methods for incompressible fluids
Creators: name: Tessarotto, Marco
name: Fonda, Enrico
name: Tessarotto, Massimo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: It is well-known that in fluid dynamics an alternative to customary direct solution methods (based on the discretization of the fluid fields) is provided by so-called \emph{particle simulation methods}. Particle simulation methods rely typically on appropriate \emph{kinetic models} for the fluid equations which permit the evaluation of the fluid fields in terms of suitable expectation values (or \emph{momenta}) of the kinetic distribution function $f(\mathbf{r,v},t),$ being respectively $\mathbf{r}$ and\textbf{\}$\mathbf{v}$ the position an velocity of a test particle with probability density $f(\mathbf{r,v},t)$. These kinetic models can be continuous or discrete in phase space, yielding respectively \emph{continuous} or \emph{discrete kinetic models} for the fluids. However, also particle simulation methods may be biased by an undesirable computational complexity. In particular, a fundamental issue is to estimate the algorithmic complexity of numerical simulations based on traditional LBM's (Lattice-Boltzmann methods; for review see Succi, 2001 \cite{Succi}). These methods, based on a discrete kinetic approach, represent currently an interesting alternative to direct solution methods. Here we intend to prove that for incompressible fluids fluids LBM's may present a high complexity. The goal of the investigation is to present a detailed account of the origin of the various complexity sources appearing in customary LBM's. The result is relevant to establish possible strategies for improving the numerical efficiency of existing numerical methods.
description: Contributed paper at RGD26 (Kyoto, Japan, July 2008)
Radio-Projekt-Unterricht beim FRO
Creators: name: Plochberger, Philippa
Publisher: name: Medienimpulse
Year: 2014

description: Wie können Radioprojekte mit Kindern und Jugendlichen umgesetzt werden? Und was "bringt" Radiomachen den SchülerInnen bzw. der Schule? Philippa Plochberger, Ausbildungsleitung bei Radio FRO, teilt ihre Sicht der Medienkompetenzvermittlung mit den LeserInnen der MEDIENIMPULSE ...
description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
Suppressing laser phase noise in an optomechanical system
Creators: name: Zeng, Yexiong
name: Xiong, Biao
name: Li, Chong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme to suppress the laser phase noise without increasing the optomechanical single-photon coupling strength. In the scheme, the parametric amplification terms, created by Kerr and Duffing nonlinearities, can restrain laser phase noise and strengthen the effective optomechanical coupling, respectively. Interestingly, decreasing laser phase noise leads to increasing thermal noise, which is inhibited by bringing in a broadband-squeezed vacuum environment. To reflect the superiority of the scheme, we simulate quantum memory and stationary optomechanical entanglement as examples, and the corresponding numerical results demonstrate that the laser phase noise is extremely suppressed. Our method can pave the way for studying other quantum phenomena.
Structure of the breakpoint region in CVC of the intrinsic Josephson junctions
Creators: name: Shukrinov, Yu. M.
name: Mahfouzi, F.
name: Suzuki, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A fine structure of the breakpoint region in the current-voltage characteristics of the coupled intrinsic Josephson junctions in the layered superconductors is found. We establish a correspondence between the features in the current-voltage characteristics and the character of the charge oscillations in superconducting layers in the stack and explain the origin of the breakpoint region structure.
description: 5 pages, 5 figures. Accepted for Phys.Rev.B
Momentum deposition of supernovae with cosmic rays
Creators: name: Montero, Francisco Rodríguez
name: Martin-Alvarez, Sergio
name: Sijacki, Debora
name: Slyz, Adrianne
name: Devriendt, Julien
name: Dubois, Yohan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The cataclysmic explosions of massive stars as supernovae are one of the key ingredients of galaxy formation. However, their evolution is not well understood in the presence of magnetic fields or cosmic rays (CRs). We study the expansion of individual supernova remnants (SNRs) using our suite of 3D hydrodynamical (HD), magnetohydrodynamical (MHD) and CRMHD simulations generated using RAMSES. We explore multiple ambient densities, magnetic fields and fractions of supernova energy deposited as CRs ($χ_{\rm CR}$), accounting for cosmic ray anisotropic diffusion and streaming. All our runs have comparable evolutions until the end of the Sedov-Taylor phase. However, our CRMHD simulations experience an additional CR pressure-driven snowplough phase once the CR energy dominates inside the SNR. We present a model for the final momentum deposited by supernovae that captures this new phase: $p_{\rm SNR} = 2.87\times 10^{5} (χ_{\text{CR}} + 1)^{4.82}\left(\frac{n}{\text{cm}^{-3}}\right)^{-0.196} M_{\odot}$ km s$^{-1}$. Assuming a 10% fraction of SN energy in CRs leads to a 50% boost of the final momentum, with our model predicting even higher impacts at lower ambient densities. The anisotropic diffusion of CRs assuming an initially uniform magnetic field leads to extended gas and cosmic ray outflows escaping from the supernova poles. We also study a tangled initial configuration of the magnetic field, resulting instead in a quasi-isotropic diffusion of CRs and earlier momentum deposition. Finally, synthetic synchrotron observations of our simulations using the POLARIS code show that the local magnetic field configuration in the interstellar medium modifies the overall radio emission morphology and polarisation.
description: 17 pages, 11 figures, submitted to MNRAS
Performing Stories. Erzählen in Theater und Performance
Creators: name: Sumi, Denise
Publisher: name: Medienimpulse
Year: 2014

description: Nina Tecklenburg forscht als Teil des Kollektivs She She Pop nicht nur im Berliner HAU sondern auch zu narrativen Aufführungspraktiken um die Jahrtausendwende. Unter dem Begriff "Theater der Narration" vereint die Autorin in ihrem ersten Buch Performing Stories. Erzählen in Theater und Performance eine Reihe von Theateraufführungen und Performances, die sich von der schriftsprachlichen Literatur, der Epik und Dramatik befreien und anstelle dieser klassischen Dispositive des Narrativen das (Geschichten-)Erzählen als kulturelle und performative Praxis vorführen.
description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
Cross-Layer Adaptive Feedback Scheduling of Wireless Control Systems
Creators: name: Xia, Feng
name: Ma, Longhua
name: Peng, Chen
name: Sun, Youxian
name: Dong, Jinxiang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.1; C.3

description: There is a trend towards using wireless technologies in networked control systems. However, the adverse properties of the radio channels make it difficult to design and implement control systems in wireless environments. To attack the uncertainty in available communication resources in wireless control systems closed over WLAN, a cross-layer adaptive feedback scheduling (CLAFS) scheme is developed, which takes advantage of the co-design of control and wireless communications. By exploiting cross-layer design, CLAFS adjusts the sampling periods of control systems at the application layer based on information about deadline miss ratio and transmission rate from the physical layer. Within the framework of feedback scheduling, the control performance is maximized through controlling the deadline miss ratio. Key design parameters of the feedback scheduler are adapted to dynamic changes in the channel condition. An event-driven invocation mechanism for the feedback scheduler is also developed. Simulation results show that the proposed approach is efficient in dealing with channel capacity variations and noise interference, thus providing an enabling technology for control over WLAN.
description: 17 pages, 12 figures; Open Access at http://www.mdpi.org/sensors/papers/s8074265.pdf
Bericht am Feuer. Gespräche, E-Mails und Telefonate zum Werk von Christoph Ransmayr
Creators: name: Lenhart, Johanna
Publisher: name: Medienimpulse
Year: 2014

description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
Lagrangian dynamics of incompressible thermofluids
Creators: name: Tessarotto, Marco
name: Cremaschini, Claudio
name: Nicolini, Piero
name: Tessarotto, Massimo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A key aspect of fluid dynamics is the correct definition of the \textit{% phase-space} Lagrangian dynamics which characterizes arbitrary fluid elements of an incompressible fluid. Apart being an unsolved theoretical problem of fundamental importance, the issue is relevant to exhibit the connection between fluid dynamics and the classical dynamical systems underlying incompressible and non-isothermal fluid, typically founded either on: a) a \textit{configuration-space} Lagrangian description of the dynamics of fluid elements; b) a kinetic description of the molecular dynamics, based on a discrete representation of the fluid. The goal of this paper is to show that the exact Lagrangian dynamics can be established based on the inverse kinetic theory (IKT) for incompressible fluids recently pointed out (Ellero \textit{et al.}, 2004-2006, \cite{Ellero2004}). The result is reached by adopting an IKT approach based on a \textit{restricted phase-space representation} of the fluid, in which the configuration space coincides with the physical fluid domain. The result appears of potential importance in applied fluid dynamics and CFD.
description: Contributed paper at RGD26 (Kyoto, Japan, July 2008)
title: Between Two Litanies: Equity and Public Education in Richmond, VA
Creators: name: Williams II, Dennis
Publisher: name: Richmond Racial Equity Essays
Year: 2021

description: This is essay number 8 from the book Richmond Racial Equity Essays, edited by Ebony Walden and Meghan Z. Gough. It appears on pages 35-38 of the book in the section "Ensuring Educational Equity." The author examines white backlash (white resistance to and prevention of racial and educational equity), calling it a social mechanism as persistent as the struggle for racial equality itself.
Verhandeln in Briefen. Frauen in der höfischen Diplomatie des frühen 18. Jahrhunderts
Creators: name: Winkler, Paul
Publisher: name: Medienimpulse
Year: 2014

description: Corina Bastian wertet innerhalb ihrer äußerst anregenden Mikrostudie erstmals systematisch den Briefwechsel zwischen Madame de Maintenon, der morganatischen Ehefrau Ludwigs XIV., und der Ersten Kammerdame des spanischen Königspaares, Princesse des Ursins, inmitten des Spanischen Erbfolgekrieges aus. Der präzise Blick auf ein konkretes Beispiel einer höfischen Form der Diplomatie, das keine geschlechterbezogene Ausnahmeerscheinung darstellt, sondern in Synergie mit bürokratischen Kanälen stattfand, erlaubt der Autorin generelle Aussagen zur frühneuzeitlichen Diplomatie.
description: Medienimpulse, Bd. 52 Nr. 3 (2014): 3/2014 - Medienproduktion im Alltag von Kindern und Jugendlichen
First high energy observations of Narrow Line Seyfert 1s with INTEGRAL/IBIS
Creators: name: Malizia, A.
name: Bassani, L.
name: Bird, A. J.
name: Landi, R.
name: Masetti, N.
name: De Rosa, A.
name: Panessa, F.
name: Molina, M.
name: Dean, A. J.
name: Perri, M.
name: Tueller, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Narrow Line Seyfert 1 galaxies (NLS1) are very interesting objects which display peculiar properties when compared to their broad line analogues (BLS1). Although well studied in many wavebands, their behaviour at >10 keV is poorly studied and yet important to discriminate between models invoked to explain the complexity observed in the X-ray band. Here we present for the first time high energy observations (17-100 keV) of five NLS1 galaxies (3 bona fide and 2 candidates) detected by INTEGRAL/IBIS and provide for all of them a broad band spectral analysis using data obtained by Swift/XRT below 10 keV. The combined INTEGRAL spectrum is found to be steeper (Gamma=2.6 +/- 0.3) than those of classical Seyfert 1 objects. This is due to a high energy cutoff, which is required in some individual fits as in the average broad band spectrum. The location of this high energy cutoff is at lower energies (E < 60 keV) than typically seen in classical type 1 AGNs; a reflection component may also be present but its value (R < 0.8) is compatible with those seen in standard Seyfert 1s. We do not detect a soft excess in individual objects but only in their cumulative spectrum. Our results suggest a lower plasma temperature for the accreting plasma which combined to the high accretion rates (close to the Eddington rate) point to different nuclear conditions in broad and narrow line Seyfert 1 galaxies, likely related to different evolutionary stages.
description: 7 pages, 5 figures; corrected text in section 3, accepted for publication in MNRAS
Comments on scalar-tensor representation of nonlocally corrected gravity
Creators: name: Koshelev, N. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The scalar-tensor representation of nonlocally corrected gravity is considered. Some special solutions of the vacuum background equations were obtained that indicate to the nonequivalence of the initial theory and its scalar-tensor representation.
description: 6 pages, refs added