cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Axisymmetric collapse simulations of rotating massive stellar cores in full general relativity: Numerical study for prompt black hole formation
Creators: name: Sekiguchi, Yu-ichirou
name: Shibata, Masaru
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We perform axisymmetric simulations for gravitational collapse of a massive iron core to a black hole in full general relativity. The iron cores are modeled by $Γ= 4/3$ equilibrium polytrope for simplicity and a parametric equation of state is adopted during the collapse. Performing simulations for a wide variety of initial conditions changing the mass, the angular momentum, the rotational velocity profile of the core, and the parameters of the equations of state (which are chosen so that the maximum mass of the cold spherical polytrope is $\approx 1.6M_{\odot}$), a criterion for the prompt black hole formation is clarified in terms of them. It is found that (i) with the increase of the thermal energy generated by shocks, the threshold mass for the prompt black hole formation is increased by 20--40%, (ii) the rotational centrifugal force increases the threshold mass by $\alt 25%$, (iii) with the increase of the degree of differential rotation, the threshold mass is also increased, and (iv) the amplification factors shown in the results (i)--(iii) depend sensitively on the equation of state. We also find that the collapse dynamics and the structure of the shock formed at the bounce depend strongly on the stiffness of the adopted equation of state. In particular, as a new feature, a strong bipolar explosion is observed for the collapse of rapidly rotating iron cores with an equation of state which is stiff in subnuclear density and soft in supranuclear density. Gravitational waves are computed in terms of a quadrupole formula. It is also found that the waveform depends sensitively on the equations of state.
title: Industriespionage : Risikofaktor Mensch
Creators: name: Röder, Nils
Publisher: name: Hochschule Hannover
Year: 2011
Subjects: subject: 650 Management

description: Durch die Globalisierung und den verschärften internationalen Wettbewerb sind innovative Unternehmen in zunehmendem Maße durch Industriespionage bedroht. Eine besondere Rolle kommt hierbei dem Faktor Mensch zu, der das größte Risiko für einen ungewollten Know-how-Abfluss darstellt. Hiervon ausgehend untersucht die vorliegende Arbeit, welche präventiven und repressiven Spionageabwehrmaßnahmen Unternehmen zur Verbesserung der personellen Sicherheit zur Verfügung stehen. Nach einer theoretischen Einführung in das Thema werden die Ergebnisse von acht Experteninterviews vorgestellt und in die bestehende Literatur integriert. Dabei zeigen die Ergebnisse, dass es keine Musterlösung gibt, sondern dass je nach Unternehmen, spezifischer Bedrohungslage und wirtschaftlichen Rahmenbedingungen ein individuelles und ganzheitliches Informationsschutzkonzept zu entwickeln ist.
description: Due to globalization and increased international competition, innovative companies are increasingly threatened by industrial espionage. Regarding this, the human factor includes the highest risk of an unintentional knowledge outflow. Based on these facts, the present study investigates which preventive and repressive measures of counter-intelligence are available to improve the company’s personnel security. After a theoretical introduction to the topic of industrial espionage, the results of eight interviews with experts are presented and integrated into the existing literature. In doing so, the results reveal that there is no sample solution, so that each company needs to develop its own and holistic system of information protection, depending on specific threats and economic environment.
Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors
Creators: name: Braun, V. M.
name: Lenz, A.
name: Peters, G.
name: Radyushkin, A. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A theoretical framework is suggested for the calculation of gamma* N -> Delta transition form factors using the light-cone sum rule approach. Leading-order sum rules are derived and compared with the existing experimental data. We find that the transition form factors in a several GeV region are dominated by the ``soft'' contributions that can be thought of as overlap integrals of the valence components of the hadron wave functions. The ``minus'' components of the quark fields contribute significantly to the result, which can be reinterpreted as large contributions of the quark orbital angular momentum
description: 38 pages, 10 figures; some typos fixed and references added, to appear in Phys. Rev. D
title: Sicherheit von Webanwendungen für Unternehmen am Beispiel von Typo3
Creators: name: Mischko, Dirk
Publisher: name: Hochschule Hannover
Year: 2011
Subjects: subject: 004 Informatik

description: Die vorliegende Bachelorarbeit beleuchtet die Sicherheitsaspekte von Webapplikationen, mit speziellem Fokus auf das CMS TYPO3. Im ersten Abschnitt werden die gesellschaftspolitischen Hintergründe von Internetkriminalität, sowie die allgemeine Rechtslage beschrieben. Der zweite Abschnitt erklärt die heutigen Angriffsmethoden, mit denen Webseiten attackiert werden. Im weiteren Verlauf der Arbeit untersucht der Autor anhand einer eigenen TYPO3 Installation, welche Möglichkeiten zur effektiven Optimierung der Sicherheit des CMS zur Verfügung stehen. Den Abschluß bilden eine Analyse der durchgeführten Maßnahmen, sowie die Aufstellung allgemeiner Richtlinien für vergleichbare Projekte.
title: Konzeption und Kontextualisierung Virtueller Bibliotheksführungen
Creators: name: Hölzel, Christoph
Publisher: name: Hochschule Hannover
Year: 2011
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: In einem Zeitalter der Beschleunigung spielen vorhandene Zeitressourcen eine immer tragendere Rolle bei den Handlungsoptionen des Menschen. Die vorliegende Arbeit setzt diese Gegebenheit in Bezug zum Aufkommen Virtueller Bibliotheksführungen, die eine immer größere Verbreitung im World Wide Web erfahren. Ziel der Arbeit ist der Versuch, anhand einiger ausgewählter Virtueller Bibliotheksführungen, Richtlinien und Empfehlungen zur Konzeption abgeben zu können. Nach einer Einbettung Virtueller Bibliotheksführungen in soziokulturelle Zusammenhänge, die Bezug zum Phänomen der Beschleunigung nehmen, folgt über eine Gegenüberstellung verschiedener Virtueller Bibliotheksführungen, eine Erstellung einer Best Practice. Abschließend wird die entwickelte Checkliste in Bezug zur Konzeption der Virtuellen Bibliotheksführung für die Gottfried Wilhelm Leibniz Bibliothek - Niedersächsische Landesbibliothek gesetzt.
Brogi, Marco: La Santa Salmodea annuale della Chiesa Copta
Creators: name: Engberding, Hieronymus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 50 (1966): Oriens christianus, Band 50
Polaronic behavior of undoped high-Tc cuprates
Creators: name: Rösch, O.
name: Gunnarsson, O.
name: Zhou, X. J.
name: Yoshida, T.
name: Sasagawa, T.
name: Fujimori, A.
name: Hussain, Z.
name: Shen, Z. -X.
name: Uchida, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present angle-resolved photoemission spectroscopy (ARPES) data on undoped La2CuO4, indicating polaronic coupling between bosons and charge carriers. Using a shell model, we calculate the electron-phonon coupling and find that it is strong enough to give polarons. We develop an efficient method for calculating ARPES spectra in undoped systems. Using the calculated couplings, we find the width of the phonon side band in good agreement with experiment. We analyze reasons for the observed dependence of the width on the binding energy.
description: 4 pages, RevTeX, 5 eps figures, more material available at http://www.fkf.mpg.de/andersen/phonons/
Mesoscopic anisotropic magnetoconductance fluctuations in ferromagnets
Creators: name: Adam, Shaffique
name: Kindermann, Markus
name: Rahav, Saar
name: Brouwer, Piet W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The conductance of a ferromagnetic particle depends on the relative orientation of the magnetization with respect to the direction of current flow. This phenomenon is known as "anisotropic magnetoresistance". Quantum interference leads to an additional, random dependence of the conductance on the magnetization direction. These "anisotropic magnetoresistance fluctuations" are caused by spin-orbit scattering, which couples the electron motion to the exchange field in the ferromagnet. We report a calculation of the dependence of the conductance autocorrelation function on the rotation angle of the magnetization direction.
description: 4 pages, 3 figures, revtex4
X-Ray Observations of V4641 SGR (= SAX J1819.3-2525) During the Brief and Violent Outburst of 2003
Creators: name: Maitra, Dipankar
name: Bailyn, Charles D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of detailed analysis of pointed X-ray observations by RXTE PCA/HEXTE of the black hole X-ray binary (BHXRB) system V4641 Sgr (= SAX J1819.3-2525) during its outburst of August 2003. Soft X-ray (3-20 keV) flux variations by factors of 10 or more on timescales of minutes or shorter were seen. The rapid and strong variability of this source sets it apart from typical XRBs. In spite of large luminosity fluctuations, the spectral state of the source did not change significantly during the dwells which suggests that the physical emission processes did not change much during the observations. The energy spectra during the dwells were dominated by a hard Comptonized powerlaw component, indicative of the canonical low/hard state observed in other BHXRBs. No soft thermal component was found in three out of the four RXTE pointings. However spectral deconvolution of the observation with largest average luminosity suggests an obscured, hot accretion disk. During one of the observations we detected a short term (about 100s) soft X-ray dropout which is apparently due to variability in the observed column density. Strong Fe K$α$ fluorescent emisssion line near 6.5 keV was detected with large equivalent widths in the range of 700 - 1000eV. In the temporal domain, the Fourier power spectra were dominated by red noise below a few Hz. Poisson noise dominated at higher frequencies and no high frequency features were detected. The strong Comptonized spectra, broad iron emission line, absence of disk component in the spectra, absence of any timing variability above few Hz and occasional large changes in the column density along the line-of-sight, all support an enshrouded black hole with occasional outflow and a very dynamic environment.
description: 27 pages, 10 figures (1 color figure), accepted for publication in the Astrophysical Journal. It is tentatively scheduled for the ApJ 01 February 2006, v637, 2 issue
Gamma-ray-emitting narrow-line Seyfert 1 galaxies: the Swift view
Creators: name: D'Ammando, Filippo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the analysis of all Swift observations available up to 2019 April of $γ$-ray-emitting narrow-line Seyfert 1 galaxies (NLSy1). The distribution of X-ray luminosities (and fluxes) indicates that the jet radiation significantly contributes to their X-ray emission, with Doppler boosting making values higher than other radio-loud NLSy1. The 0.3-10 keV photon indices are on average harder with respect to radio-quiet and radio-loud NLSy1, confirming a dominant jet contribution in X-rays. However, the lower variability amplitude with respect to blazars and the softening of the spectrum in some periods suggests that also the corona radiation contributes to the X-ray emission. In optical and ultraviolet (UV) significant flux changes have been observed on daily, weekly, and monthly time-scale, providing a clear indication of the significant contribution of the jet radiation in this part of spectrum. A strong correlation between X-ray, UV, and optical emission and simultaneous flux variations have been observed in 1H 0323+342, SBS 0846+513, PMN J0948+0022 as expected in case the jet radiation is the dominant mechanism. Correlated multiband variability favours the jet-dominated scenario also in FBQS J1644+2619 and PKS 2004-447. The summed X-ray Telescope spectra of 1H 0323+342, SBS 0846+513, PMN J0948+0022, and FBQS J1644+2619 are well fitted by a broken power law with a break around 2 keV. The spectrum above 2 keV is dominated by the non-thermal emission from a beamed relativistic jet, as suggested by the hard photon index. A Seyfert-like feature like the soft X-ray excess has been observed below 2 keV, making these $γ$-ray-emitting NLSy1 different from typical blazars.
description: 19 pages, 10 figures, 8 tables in the main manuscript + 18 pages, 3 figures, 12 tables in the supplementary material. Published in Monthly Notices of the Royal Astronomical Society, Volume 496, Issue 2, pp. 2213-2229
Additional file 1 of Use of olanzapine to treat agitation in traumatic brain injury: study protocol for a randomised controlled trial
Creators: name: Phyland, Ruby K
name: McKay, Adam
name: Olver, John
name: Walterfang, Mark
name: Hopwood, Malcolm
name: Hicks, Amelia J
name: Mortimer, Duncan
name: Ponsford, Jennie L
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1: Appendix. Biological Specimens.
title: Austausch von implizitem Wissen in Teams : Methoden und Motivationsfaktoren für Arbeitsteams
Creators: name: Reaper, Monika
Publisher: name: Hochschule Hannover
Year: 2011
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: In der vorliegenden Mastererarbeit wird untersucht, wie implizites Wissen in Arbeitsteams optimal zwischen den Teammitgliedern ausgetauscht werden kann. Dazu werden Austauschmethoden für implizites Wissen und Movationstheorien analysiert. Anhand der Austauschmethoden und Motivationstheorien wird ein Modell entwickelt, das Teamleitern helfen soll, den Austausch von implizitem Wissen in Arbeitsteams am Besten zu nutzen.
Additional file 2 of Development and usability testing of Understanding Stroke, a tailored life-sustaining treatment decision support tool for stroke surrogate decision makers
Creators: name: Chen, Emily P.
name: Arslanian-Engoren, Cynthia
name: Newhouse, William
name: Egleston, Diane
name: Sahgal, Savina
name: Aneesha Yande
name: Fagerlin, Angela
name: Zahuranec, Darin B.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Additional file 2 Overview of Understanding Stroke. Screenshots of the Understanding Stroke tool content, graphics, and summary report
A Sensorized Multicurved Robot Finger with Data-driven Touch Sensing via Overlapping Light Signals
Creators: name: Piacenza, Pedro
name: Behrman, Keith
name: Schifferer, Benedikt
name: Kymissis, Ioannis
name: Ciocarlie, Matei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Despite significant advances in touch and force transduction, tactile sensing is still far from ubiquitous in robotic manipulation. Existing methods for building touch sensors have proven difficult to integrate into robot fingers due to multiple challenges, including difficulty in covering multicurved surfaces, high wire count, or packaging constrains preventing their use in dexterous hands. In this paper, we present a multicurved robotic finger with accurate touch localization and normal force detection over complex, three-dimensional surfaces. The key to our approach is the novel use of overlapping signals from light emitters and receivers embedded in a transparent waveguide layer that covers the functional areas of the finger. By measuring light transport between every emitter and receiver, we show that we can obtain a very rich signal set that changes in response to deformation of the finger due to touch. We then show that purely data-driven deep learning methods are able to extract useful information from such data, such as contact location and applied normal force, without the need for analytical models. The final result is a fully integrated, sensorized robot finger, with a low wire count and using easily accessible manufacturing methods, designed for easy integration into dexterous manipulators.
description: To be published in IEEE/ASME Transactions on Mechatronics. https://ieeexplore.ieee.org/document/9006916
First measurement of the $π^+π^-$ atom lifetime
Creators: name: The DIRAC Collaboration
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The goal of the DIRAC experiment at CERN (PS212) is to measure the $π^+π^-$ atom lifetime with 10% precision. Such a measurement would yield a precision of 5% on the value of the $S$-wave $ππ$ scattering lengths combination $|a_0-a_2|$. Based on part of the collected data we present a first result on the lifetime, $τ=[2.91 ^{+0.49}_{-0.62}]\times 10^{-15}$ s, and discuss the major systematic errors. This lifetime corresponds to $|a_0-a_2|=0.264 ^{+0.033}_{-0.020} m_π^{-1}$.
description: 18 pages, 6 figures
title: Religiöse Symbole im öffentlichen Raum
title: Religious symbols in public space
Creators: name: Kretschmann, Oliver
Publisher: name: Hochschule Hannover
Year: 2012
Subjects: subject: 200 Religion, Religionsphilosophie

description: Abhandlung über Symbole verschiedener Religionen und deren mögliches Konfliktpotential (auch in Gerichtsverfahren in Deutschland). Außerdem findet sich eine Beschreibung von Räumen der Stille, welche, abhängig von ihrer Gestaltung und Ausrichtung, symbol-frei und daher offen für alle Religionen gestaltet sein können.
Additional file 1 of The Association of Self-Reported Generalized Joint Hypermobility with pelvic girdle pain during pregnancy: a retrospective cohort study
Creators: name: Ahlqvist, Kerstin
name: Bjelland, Elisabeth Krefting
name: Pingel, Ronnie
name: Schlager, Angela
name: Nilsson-Wikmar, Lena
name: Kristiansson, Per
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 1. The association between generalized joint hypermobility and pelvic girdle pain during pregnancy according to BMI, parity and a history of back pain, based on 4434 questionnaires from 2217 pregnant women.
Additional file 1 of Development and usability testing of Understanding Stroke, a tailored life-sustaining treatment decision support tool for stroke surrogate decision makers
Creators: name: Chen, Emily P.
name: Arslanian-Engoren, Cynthia
name: Newhouse, William
name: Egleston, Diane
name: Sahgal, Savina
name: Aneesha Yande
name: Fagerlin, Angela
name: Zahuranec, Darin B.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Additional file 1. Focus Group Demographic Data. Demographic data and characteristics of focus group participants
A NICER look at the state transitions of the black hole candidate MAXI J1535-571 during its reflares
Creators: name: Cúneo, V. A.
name: Alabarta, K.
name: Zhang, L.
name: Altamirano, D.
name: Méndez, M.
name: Padilla, M. Armas
name: Remillard, R.
name: Homan, J.
name: Steiner, J. F.
name: Combi, J. A.
name: Muñoz-Darias, T.
name: Gendreau, K. C.
name: Arzoumanian, Z.
name: Stevens, A. L.
name: Loewenstein, M.
name: Tombesi, F.
name: Bult, P.
name: Fabian, A. C.
name: Buisson, D. J. K.
name: Neilsen, J.
name: Basak, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The black hole candidate and X-ray binary MAXI J1535-571 was discovered in September 2017. During the decay of its discovery outburst, and before returning to quiescence, the source underwent at least four reflaring events, with peak luminosities of $\sim$10$^{35-36}$ erg s$^{-1}$ (d/4.1 kpc)$^2$. To investigate the nature of these flares, we analysed a sample of NICER observations taken with almost daily cadence. In this work we present the detailed spectral and timing analysis of the evolution of the four reflares. The higher sensitivity of NICER at lower energies, in comparison with other X-ray detectors, allowed us to constrain the disc component of the spectrum at $\sim$0.5 keV. We found that during each reflare the source appears to trace out a q-shaped track in the hardness-intensity diagram similar to those observed in black hole binaries during full outbursts. MAXI J1535-571 transits between the hard state (valleys) and softer states (peaks) during these flares. Moreover, the Comptonised component is undetected at the peak of the first reflare, while the disc component is undetected during the valleys. Assuming the most likely distance of 4.1 kpc, we find that the hard-to-soft transitions take place at the lowest luminosities ever observed in a black hole transient, while the soft-to-hard transitions occur at some of the lowest luminosities ever reported for such systems.
description: Accepted for publication in MNRAS main journal
Characterization of Errors in Interferometry with Entangled Atoms
Creators: name: Brif, Constantin
name: Ruzic, Brandon P.
name: Biedermann, Grant W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent progress in generating entangled spin states of neutral atoms provides opportunities to advance quantum sensing technology. In particular, entanglement can enhance the performance of accelerometers and gravimeters based on light-pulse atom interferometry. We study the effects of error sources that may limit the sensitivity of such devices, including errors in the preparation of the initial entangled state, imperfections in the laser pulses, momentum spread of the initial atomic wave packet, measurement errors, spontaneous emission, and atom loss. We determine that, for each of these errors, the expectation value of the parity operator $Π$ has the general form, $\overline{\langle Π\rangle} = Π_0 \cos( N ϕ)$, where $ϕ$ is the interferometer phase and $N$ is the number of atoms prepared in the maximally entangled Greenberger--Horne--Zeilinger state. Correspondingly, the minimum phase uncertainty has the general form, $Δϕ= (Π_0 N)^{-1}$. Each error manifests itself through a reduction of the amplitude of the parity oscillations, $Π_0$, below the ideal value of $Π_0 = 1$. For each of the errors, we derive an analytic result that expresses the dependence of $Π_0$ on error parameter(s) and $N$, and also obtain a simplified approximate expression valid when the error is small. Based on the performed analysis, entanglement-enhanced atom interferometry appears to be feasible with existing experimental capabilities.
On the role of strong gravity in polarization from scattering of light in relativistic flows
Creators: name: Horak, J.
name: Karas, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study linear polarization due to scattering of light on a cloudlet of particles, taking into account the radiation drag and the gravitational pull exerted on them by a central body. Effects of special and general relativity are included by connecting a model of Beloborodov (1998) for the local polarization of scattered light with Abramowicz, Ellis & Lanza (1990) formalism for the particle motion near an ultra-compact star. Compactness of the central body and its luminosity are two critical parameters of the model. We discuss the polarization magnitude of photons, which are Thomson-scattered into direct and higher-order images. Importance of the latter is only moderate under typical conditions, but they may give rise to distinct features, which we explore in terms of a toy model. The scattered signal exhibits variations of intensity and of polarization with mutual time-lags depending on the beaming/focusing effects and the light travel time.
description: Accepted for publication in MNRAS; 16 pages, 13 figures
Selectively Controlled Magnetic Microrobots with Opposing Helices
Creators: name: Giltinan, Joshua
name: Katsamba, Panayiota
name: Wang, Wendong
name: Lauga, Eric
name: Sitti, Metin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Magnetic microrobots that swim through liquid media are of interest for minimally invasive medical procedures, bioengineering, and manufacturing. Many of the envisaged applications, such as micromanipulation and targeted cargo delivery, necessitate the use and adequate control of multiple microrobots, which will increase the velocity, robustness, and efficacy of a procedure. While various methods involving heterogeneous geometries, magnetic properties, and surface chemistries have been proposed to enhance independent control, the main challenge has been that the motion between all microwsimmers remains coupled through the global control signal of the magnetic field. Katsamba and Lauga proposed transchiral microrobots, a theoretical design with magnetized spirals of opposite handedness. The competition between the spirals can be tuned to give an intrinsic nonlinearity that each device can function only within a given band of frequencies. This allows individual microrobots to be selectively controlled by varying the frequency of the rotating magnetic field. Here we present the experimental realization and characterization of transchiral micromotors composed of independently driven magnetic helices. We show a swimming micromotor that yields negligible net motion until a critical frequency is reached and a micromotor that changes its translation direction as a function of the frequency of the rotating magnetic field. This work demonstrates a crucial step towards completely decoupled and addressable swimming magnetic microrobots.
title: Provenienzforschung zum Nachweis von NS-Raubgut in Bibliotheken - unter besonderer Berücksichtigung der Stadtbibliothek Hannover
Creators: name: Doras, Johanna
Publisher: name: Hochschule Hannover
Year: 2012
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: Fast 70 Jahre nach dem Zweiten Weltkrieg und den nationalsozialistischen Plünderungen und Enteignungen befinden sich noch immer konfiszierte Bücher in deutschen Bibliotheken. Die Rückgabe dieser unrechtmäßig in die Bibliotheken gelangten Bestände ist eine ebenso wichtige wie langwierige Aufgabe. In der vorliegenden Bachelorarbeit wird im ersten Teil das Vorgehen bei der Restitution von NS-verfolgungsbedingt entzogenem Kulturgut mit den möglichen Schwierigkeiten dargestellt. Im zweiten Teil wird die praktisch durchgeführte Provenienzforschung in der Stadtbibliothek Hannover beschrieben.
Magnetic charges in local field theory
Creators: name: de Wit, Bernard
name: Samtleben, Henning
name: Trigiante, Mario
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Novel Lagrangians are discussed in which (non-abelian) electric and magnetic gauge fields appear on a par. To ensure that these Lagrangians describe the correct number of degrees of freedom, tensor gauge fields are included with corresponding gauge symmetries. Non-abelian gauge symmetries that involve both the electric and the magnetic gauge fields can then be realized at the level of a single gauge invariant Lagrangian, without the need of performing duality transformations prior to introducing the gauge couplings. The approach adopted, which was initially developed for gaugings of maximal supergravity, is particularly suited for the study of flux compactifications.
description: 23 pages; v2: minor corrections, references added, formula (4.14) added
The HST view of the nuclear emission line region in low luminosity radio-galaxies
Creators: name: Capetti, Alessandro
name: Kleijn, Gijs Verdoes
name: Chiaberge, Marco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the properties of the emission line regions in two samples of low luminosity radio-galaxies (LLRG), focusing on the compact emission line region (CELR) revealed to be a characteristic feature of these objects by HST narrow-band imaging. We find a strong correlation between line and optical continuum nuclear emission, suggesting that the optical cores (most likely of non thermal origin) can be directly associated to the source of ionizing photons, i.e. that we are seeing a jet-ionized narrow line region. A photon budget argument indicates that the optical nuclear sources produce a sufficient photon flux provided that the covering factor of the circum-nuclear gas is rather large, on average ~ 0.3. Analysis of HST images and spectra suggests that the CELR may take the form of a pc-scale, high filling factor, structure, possibly an optically thin torus. Estimates of the CELR mass lead to values as small as 10 - 1000 solar masses and photon counting sets a limit to the BLR mass of 0.01 solar masses. When considered together with the low accretion rate and the tenuous torus structure, a general paucity of gas in the innermost regions of LLRG emerges as the main characterizing difference from more powerful AGN.
description: Accepted for publication in A&A
Gas and stellar dynamics in NGC 1068. Probing the galactic gravitational potential
Creators: name: Emsellem, Eric
name: Fathi, Kambiz
name: Wozniak, Herve
name: Ferruit, Pierre
name: Mundell, Carole G.
name: Schinnerer, Eva
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Sauron 2D spectrography of the central 1.5 kpc of the nearby Sey2 galaxy NGC1068, encompassing the well-known NIR inner bar. We have successively disentangled the respective contributions of the ionized gas and stars, thus deriving their 2D distribution and kinematics. The [OIII] and Hbeta emission lines exhibit very different spatial distribution and kinematics, the latter following inner spiral arms with clumps associated with star formation. Strong inwards streaming motions are observed in both the Hbeta and [OIII] kinematics. The stellar kinematics also exhibit clear signatures of a non-axisymmetric tumbling potential, with a twist in both the velocity and h3 fields. We re-examined the long-slit data of Shapiro et al (2003) using pPXF: a strong decoupling of h3 is revealed, and the central decrease in h4 hinted in the Sauron data is confirmed. These data also suggest that NGC1068 is a good candidate for a so-called sigma-drop. We confirm the possible presence of two pattern speeds. We also examine the stellar kinematics of bars formed in N-body+SPH simulations built from axisymmetric initial conditions. These successfully reproduce a number of properties observed in the 2D kinematics of NGC1068, and the long-slit data, showing that the kinematic signature of the NIR bar is imprinted in the stellar kinematics. The remaining differences between the models and the observed properties are mostly due to the exclusion of star formation and the lack of the primary large-scale oval/bar in the simulations. These models suggest that the inner bar could drive a significant amount of gas down to a scale of ~300 pc. This is consistent with the interpretation of the sigma-drop in NGC1068 being the result of central gas accretion followed by an episode of star formation.
description: accepted for publication in MNRAS, 20 pages, 17 figures (high res version available at www-obs.univ-lyon1.fr/eric.emsellem/preprints/NGC1068_Emsellemetal_final.pdf)
Visible and near-infrared observations of interstellar comet 2I/Borisov with the 10.4-m GTC and the 3.6-m TNG telescopes
Creators: name: de León, J.
name: Licandro, J.
name: Marcos, C. de la Fuente
name: Marcos, R. de la Fuente
name: Lara, L. M.
name: Moreno, F.
name: Pinilla-Alonso, N.
name: Serra-Ricart, M.
name: De Prá, M.
name: Tozzi, G. P.
name: Souza-Feliciano, A. C.
name: Popescu, M.
name: Scarpa, R.
name: Serra, J. Font
name: Geier, S.
name: Lorenzi, V.
name: Harutyunyan, A.
name: Cabrera-Lavers, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this work, we present the results of an observational study of 2I/Borisov carried out with the 10.4-m Gran Telescopio Canarias (GTC) and the 3.6-m Telescopio Nazionale Galileo (TNG), both telescopes located at the Roque de Los Muchachos Observatory, in the island of La Palma (Spain). The study includes images in the visible and near-infrared, as well as visible spectra in the 3600 - 9200 A wavelength range. N-body simulations were also performed to explore its orbital evolution and Galactic kinematic context. The comet's dust continuum and near-infrared colours are compatible with those observed for Solar system comets. From its visible spectrum on the nights of 2019, September 24 and 26 we measured CN gas production rates Q(CN) = (2.3 +- 0.4) x 10^{24} mol/s and Q(CN) = (9.5 +- 0.2) x 10^{24} mol/s, respectively, in agreement with measurements reported by other authors on similar nights. We also obtained an upper limit for the C2 production rate of Q(C2) < (4.5 +- 0.1) x 10^{24} mol/s. Dust modelling results indicate a moderate dust production rate of about 50 kg/s at heliocentric distance r_h=2.6 au, with a differential power-law dust size distribution of index -3.4, within the range reported for many comet comae. Our simulations show that the Galactic velocity of 2I/Borisov matches well that of known stars in the solar neighbourhood and also those of more distant regions of the Galactic disc.
description: 10 pages, 5 figures
Additional file 1 of The hierarchical structure of fear of personal death: from the general factor to specific forms
Creators: name: Jarosław Jastrzębski
name: Radosław Rogoza
name: Ślaski, Sławomir
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Appendix: The Polish form of the FVTS.
title: Die Nutzung des Gefällt mir-Buttons auf Organisationsprofilen : eine quantitative Studie zur Erfassung der Nutzungsmotive und des Verlaufs von Gefällt mir-Verknüpfungen zwischen Usern und Organisationen im Online-Netzwerk Facebook
Creators: name: Köhne, Tobias
Publisher: name: Hochschule Hannover
Year: 2012
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: Die Nutzung des Like-Buttons wurde bisher nur oberflächlich und vor allem auf den US-Raum begrenzt erforscht. Dabei lag der Fokus ausschließlich auf wirtschaftlich orientierten Unternehmen und dem monetären Wert, den ein Fan für dieses hat. In der vorliegenden Untersuchung wird eine erweiterte Perspektive gewählt. Aus Sicht deutschsprachiger Nutzer wird erforscht, welche Motive und Bedürfnisse eine Person dazu veranlassen, sich freiwillig per Gefällt-mir zu verknüpfen. Hierzu wird der Uses and Gratifications-Ansatz herangezogen. Es stehen nicht Unternehmen, sondern generell alle Formen von Organisationen im Fokus. Gleichzeitig wird untersucht, wie diese Beziehungen verlaufen: Welche Erwartungen stellen Fans? Welche Handlungen nehmen sie wie häufig vor und welchen Effekt hat eine Fanbeziehung auf die Einstellung eines Nutzers gegenüber einer Organisation? Die Motive hinter der Nutzung des Gefällt mir-Buttons sind umfangreicher, als es bisherige Forschung vermuten ließ. Fans wollen informiert werden, sie wollen ihr Gefallen schnell und einfach bekunden und sich durch die Verknüpfung selbst darstellen. Weniger wichtig, aber dennoch von Relevanz sind die Motive der Partizipation und Unterstützung, der Empfehlung, der Vorteilssuche, der Unterhaltung sowie der Netzwerkerweiterung und Gruppenzugehörigkeit. Die Verwendung des Like-Buttons dient somit der Befriedigung einer ganzen Reihe von Nutzungsbedürfnissen. Der Verlauf der Beziehungen zwischen Organisationen und Usern ist eher von Passivität geprägt. Fans wollen zwar informiert werden und stellen konkrete Ansprüche an die Art und Form von Organisationsmeldungen, sie wollen aber nur selten wirklich direkt mit einem Unternehmen, einem Verein o.ä. interagieren. Langweilen die Meldungen einer Organisation, werden zu viele oder nicht relevante Informationen an die Fans weitergeben, zögern diese nicht, eine Verknüpfung zu beenden. Ein Effekt der Fanschaft auf die Einstellung von Nutzern gegenüber der jeweiligen Organisation konnte nur bedingt festgestellt werden. Letztere zieht einen Gewinn nicht aus einer erhöhten Ausgabebereitschaft seiner Fans, sondern aus deren stärkerer Aufmerksamkeit gegenüber Organisationsmeldungen.
Recognition of facial expressions in Obsessive-Compulsive Disorder
Creators: name: Corcoran, Kathleen Marie
Publisher: name: University of British Columbia
Year: 2009

description: The ability to recognize facial expressions of emotion appears to be a universal trait among humans. Accurate perception of facial expressions is important for interpersonal communication and social development. Clients with depression and schizophrenia exhibit abnormal recognition of facial expressions of emotions. Sprengelmeyer and colleagues (1997) demonstrated that clients with OCD are also impaired in their ability to recognize facial expressions of emotion. Specifically, clients with OCD were markedly impaired in their ability to recognize the facial expression of disgust. The current study questioned the robustness of this effect, while controlling for several potential limitations. Sixty participants (20 OCD outpatients, 20 panic disorder controls, and 20 normal controls) took part in the current investigation. Participants were tested on their ability to recognize facial expressions of anger, disgust, fear and sadness. Results revealed that compared to the panic disorder and normal comparison groups, individuals with OCD were impaired in their ability to recognize facial expressions of disgust and anger. Furthermore, OCD participants did not perform as a unitary sample. Rather, two-thirds of the sample achieved normal levels of accuracy for the recognition of disgust, whereas one-third showed marked impairment in the ability to recognize disgust. This study also provides preliminary evidence that OCD symptom severity and general functioning may be related to the accuracy of disgust facial expression recognition.
Existential Theory of the Reals Completeness of Stationary Nash Equilibria in Perfect Information Stochastic Games
Creators: name: Hansen, Kristoffer Arnsfelt
name: Sølvsten, Steffan Christ
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: F.2.2
subject: 91A68, (Primary), 68Q15, 68Q17, 91A43, 91A15, 91A05, 91A06, 91A10, 91A18 (Secondary)

description: We show that the problem of deciding whether in a multi-player perfect information recursive game (i.e. a stochastic game with terminal rewards) there exists a stationary Nash equilibrium ensuring each player a certain payoff is Existential Theory of the Reals complete. Our result holds for acyclic games, where a Nash equilibrium may be computed efficiently by backward induction, and even for deterministic acyclic games with non-negative terminal rewards. We further extend our results to the existence of Nash equilibria where a single player is surely winning. Combining our result with known gadget games without any stationary Nash equilibrium, we obtain that for cyclic games, just deciding existence of any stationary Nash equilibrium is Existential Theory of the Reals complete. This holds for reach-a-set games, stay-in-a-set games, and for deterministic recursive games.
description: 19 pages, 9 figures, to be published at the 45th International Symposium on Mathematical Foundations of Computer Science
Birdsall, J. Neville (hrsg.): Biblical and Patristic Studies
Creators: name: Engberding, Hieronymus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 50 (1966): Oriens christianus, Band 50
title: Automatische Generierung von DDC-Notationen für Hochschulveröffentlichungen
Creators: name: Sommer, Maike
Publisher: name: Hochschule Hannover
Year: 2012
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: Das Thema dieser Bachelorarbeit ist die automatische Generierung von Notationen der Dewey-Dezimalklassifikation für Metadaten. Die Metadaten sind im Dublin-Core-Format und stammen vom Server für wissenschaftliche Schriften der Hochschule Hannover. Zu Beginn erfolgt eine allgemeine Einführung über die Methoden und Hauptanwendungsbereiche des automatischen Klassifizierens. Danach werden die Dewey-Dezimalklassifikation und der Prozess der Metadatengewinnung beschrieben. Der theoretische Teil endet mit der Beschreibung von zwei Projekten. In dem ersten Projekt wurde ebenfalls versucht Metadaten mit Notationen der Dewey-Dezimalklassifikation anzureichern. Das Ergebnis des zweiten Projekts ist eine Konkordanz zwischen der Schlagwortnormdatei und der Dewey-Dezimalklassifikation. Diese Konkordanz wurde im praktischen Teil dieser Arbeit dazu benutzt um automatisch Notationen der Dewey-Dezimalklassifikation zu vergeben.
Additional file 1 of Growth of centimeter-scale perovskite single-crystalline thin film via surface engineering
Creators: name: Deng, Yu-Hao
name: Yang, Zhen-Qian
name: Ma, Ren-Min
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: Developmental Biology
subject: Plant Biology

description: Additional file 1: Figure S1. Nucleation density on different substrates. Figure S2. Schematic illustrations of the nucleus mechanism. Figure S3. Aspect ratio of MAPbBr3 SC-TF. Figure S4. Crystallinity of MAPbBr3 SC-TF. Figure S5. Mobility of MAPbBr3 SC-TF. Figure S6. Device measurement setup. Figure S7. Characterization of the photodetector made of MAPbBr3 SC-TF. Table S1. Comparison of the properties of the perovskite SC-TF materials.
Perturbative SO(10) Grand Unification
Creators: name: Chang, Darwin
name: Fukuyama, Takeshi
name: Keum, Yong-Yeon
name: Kikuchi, Tatsuru
name: Okada, Nobuchika
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a phenomenologically viable SO(10) grand unification model of the unification scale $M_G$ around $10^{16} $ GeV which reproduces the MSSM at low energy and allows perturbative calculations up to the Planck scale $M_P$ or the string scale $M_{st}$. Both requirements strongly restrict a choice of Higgs representations in a model. We propose a simple SO(10) model with a set of Higgs representations $\{2 \times {\bf 10} + {\bf \bar{16}} + {\bf 16} + {\bf 45} \}$ and show its phenomenological viability. This model can indeed reproduce the low-energy experimental data relating the charged fermion masses and mixings. Neutrino oscillation data can be consistently incorporated in the model, leading to the right-handed neutrino mass scale $M_R \simeq M_G^2/M_P$. Furthermore, there exists a parameter region which results the proton life time consistent with the experimental results.
description: 14 pages, no figure, section5 was slightly modified
Fast evaluation of interaction integrals for confined systems with machine learning
Creators: name: Mreńca-Kolasińska, Alina
name: Kolasiński, Krzysztof
name: Szafran, Bartłomiej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The calculation of interaction integrals is a bottleneck for the treatment of many-body quantum systems due to its high numerical cost. We conduct configuration interaction calculations of the few-electron states confined in III-V semiconductor 2D structures using a shallow neural network to calculate the two-electron integrals, that can be used for general isotropic interaction potentials. This approach allows for a speed up of the evaluation of the energy levels and a controllable accuracy.
description: 9 pages, 10 figures
Additional file 7 of Prophylactic therapy with human amniotic fluid stem cells improved survival in a rat model of lipopolysaccharide-induced neonatal sepsis through immunomodulation via aggregates with peritoneal macrophages
Creators: name: Sato, Yu
name: Daigo Ochiai
name: Abe, Yushi
name: Masuda, Hirotaka
name: Fukutake, Marie
name: Ikenoue, Satoru
name: Kasuga, Yoshifumi
name: Shimoda, Masayuki
name: Kanai, Yae
name: Tanaka, Mamoru
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 7: Table S1. List of antibodies used for flow cytometry in this study. Table S2. List of primer sequences used for RT-qPCR in this study. Table S3. List of antibodies used for immunohistochemistry in this study.