cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Is Sextans dwarf galaxy in a scalar field dark matter halo?
Creators: name: Lora, V.
name: Magana, Juan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Bose-Einstein condensate/scalar field dark matter model, considers that the dark matter is composed by spinless-ultra-light particles which can be described by a scalar field. This model is an alternative model to the $Λ$-cold dark matter paradigm, and therefore should be studied at galactic and cosmological scales. Dwarf spheroidal galaxies have been very useful when studying any dark matter theory, because the dark matter dominates their dynamics. In this paper we study the Sextans dwarf spheroidal galaxy, embedded in a scalar field dark matter halo. We explore how the dissolution time-scale of the stellar substructures in Sextans, constrain the mass, and the self-interacting parameter of the scalar field dark matter boson. We find that for masses in the range $(0.12< m_ϕ<8) \times10^{-22}$~eV, scalar field dark halos without self-interaction would have cores large enough to explain the longevity of the stellar substructures in Sextans, and small enough mass to be compatible with dynamical limits. If the self-interacting parameter is distinct to zero, then the mass of the boson could be as high as $m_ϕ\approx2\times10^{-21}$~eV, but it would correspond to an unrealistic low mass fot the Sextans dark matter halo . Therefore, the Sextans dwarf galaxy could be embedded in a scalar field/BEC dark matter halo with a preferred self-interacting parameter equal to zero.
description: 18 pages, 5 figures, 1 table. Submitted to JCAP
Preface to the Polish Edition of "The Power of Images"
Creators: Freedberg, David A.
Publisher: name: Columbia University
Year: 2005
Subjects: Art
Iconoclasm
Iconoclasm in art

description: The original edition of The Power of Images appeared in 1989, a few months before the fall of the old regimes of Central and Eastern Europe. In the Preface to the French edition of 1998, I noted that everywhere regime change was accompanied by the destruction and removal of images. If ever the subject of iconoclasm, for so long neglected by students of the history of art and images, seemed relevant to the role of images in our daily lives, it was then. Although this seemed clear enough at the time, the implications of that extraordinary conjunction of politics and the power of images could not yet be fully appreciated. But ever since 1989, and especially since the opening of the new century, public and private responses to images have stood at the center of both our political and our personal lives.
Galactic fountains and outflows in star forming dwarf galaxies: ISM expulsion and chemical enrichment
Creators: name: Melioli, C.
name: Brighenti, F.
name: D'Ercole, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigated the impact of supernova feedback in gas-rich dwarf galaxies experiencing a low-to-moderate star formation rate, typical of relatively quiescent phases between starbursts. We calculated the long term evolution of the ISM and the metal-rich SN ejecta using 3D hydrodynamic simulations, in which the feedback energy is deposited by SNeII exploding in distinct OB associations. We found that a circulation flow similar to galactic fountains is generally established, with some ISM lifted at heights of one to few kpc above the galactic plane. This gas forms an extra-planar layer, which falls back to the plane in about $10^8$ yr, once the star formation stops. Very little or no ISM is expelled outside the galaxy system for the considered SFRs, even though in the most powerful model the SN energy is comparable to the gas binding energy. The metal-rich SN ejecta is instead more vulnerable to the feedback and we found that a significant fraction (25-80\%) is vented in the intergalactic medium, even for low SN rate ($7\times 10^{-5}$ - $7\times 10^{-4}$ yr$^{-1}$). About half of the metals retained by the galaxy are located far ($z >$ 500 pc) from the galactic plane. Moreover, our models indicate that the circulation of the metal-rich gas out from and back to the galactic disk is not able to erase the chemical gradients imprinted by the (centrally concentrated) SN explosions.
description: 19 pages, MNRAS accepted
Entwurf einer ökologischen Heilig-Geist- und Wort-Gottes-Theologie
Creators: name: Edwards, Denis
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 47 Nr. 4 (2011): Concilium: Internationale Zeitschrift für Theologie, Band 47, Heft 4
Herr und Lebensspender - der Geist heute
Creators: name: Murray, Paul D.
name: Irarrázaval, Diego
name: Bingemer, Maria Clara Lucchetti
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 47 Nr. 4 (2011): Concilium: Internationale Zeitschrift für Theologie, Band 47, Heft 4
The study of beam loading effect in the CSNS/RCS
Creators: name: Yuan, Yao-Shuo
name: Li, Kai-Wei
name: Wang, Na
name: Irie, Yoshiro
name: Wang, Sheng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: CSNS/RCS accelerates a high-intensity proton beam from 80 MeV to 1.6 GeV. Since the beam current and beam power is high, the beam loading is a severe problem for the stability of the circulating beam in the RCS. To study the beam loading effect in the CSNS/RCS theoretically, the RLC circuit model of the rf cavity, the method of the Fast Fourier Transform and the method of Laplace transform have been employed to obtain the impedance of the rf system, the beam spectrum and the beam-induced voltage, respectively. Based on these physical models, the beam dynamics equations have been revised and a beam loading model has been constructed in the simulation code ORIENT. By using the code, the beam loading effect on the rf system of the CSNS/RCS has been investigated. Some simulation results have been obtained and conclusions have been drawn.
description: 6 pages, 9 figures
Optimal Geographic Caching In Cellular Networks
Creators: name: Blaszczyszyn, Bartlomiej
name: Giovanidis, Anastasios
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this work we consider the problem of an optimal geographic placement of content in wireless cellular networks modelled by Poisson point processes. Specifically, for the typical user requesting some particular content and whose popularity follows a given law (e.g. Zipf), we calculate the probability of finding the content cached in one of the base stations. Wireless coverage follows the usual signal-to-interference-and noise ratio (SINR) model, or some variants of it. We formulate and solve the problem of an optimal randomized content placement policy, to maximize the user's hit probability. The result dictates that it is not always optimal to follow the standard policy "cache the most popular content, everywhere". In fact, our numerical results regarding three different coverage scenarios, show that the optimal policy significantly increases the chances of hit under high-coverage regime, i.e., when the probabilities of coverage by more than just one station are high enough.
description: 6 pages, 6 figures, conference
Wenn Frauen zu Ware werden (Rezensionen)
Creators: name: Strobel, Katja
name: Lassak, Sandra
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 47 Nr. 3 (2011): Concilium: Internationale Zeitschrift für Theologie, Band 47, Heft 3
On planar quantum dynamics of a magnetic dipole moment in the presence of electric and magnetic fields
Creators: name: Silva, Edilberto O.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The planar quantum dynamics of a neutral particle with a magnetic dipole moment in the presence of electric and magnetic fields is considered. The criteria to establish the planar dynamics reveal that the resulting nonrelativistic Hamiltonian has a simplified expression without making approximations, and some terms have crucial importance for system dynamics.
MPEC 2023-F68 : 2023 FS1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 FS1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Modeling Transiting Circumstellar Disks: Characterizing the Newly Discovered Eclipsing Disk System OGLE LMC-ECL-11893
Creators: name: Scott, Erin L.
name: Mamajek, Eric E.
name: Pecaut, Mark J.
name: Quillen, Alice C.
name: Moolekamp, Fred
name: Bell, Cameron P. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the nature of the unusual eclipsing star OGLE LMC-ECL-11893 (OGLE J05172127-6900558) in the Large Magellanic Cloud recently reported by Dong et al. 2014. The eclipse period for this star is 468 days, and the eclipses exhibit a minimum of ~1.4 mag, preceded by a plateau of ~0.8 mag. Spectra and optical/IR photometry are consistent with the eclipsed star being a lightly reddened B9III star of inferred age ~150 Myr and mass of ~4 solar masses. The disk appears to have an outer radius of ~0.2 AU with predicted temperatures of ~1100-1400 K. We model the eclipses as being due to either a transiting geometrically thin dust disk or gaseous accretion disk around a secondary object; the debris disk produces a better fit. We speculate on the origin of such a dense circumstellar dust disk structure orbiting a relatively old low-mass companion, and on the similarities of this system to the previously discovered EE Cep.
description: 7 pages, 3 figures, 2 tables; accepted for publication in the Astrophysical Journal
Wie können uns informationstheoretische Maße helfen, die Produktion und die Verarbeitung gesprochener Sprache zu modellieren?
Creators: name: Demberg, Vera
Publisher: name: Zenodo
Year: 2023

description: Vortrag im Rahmen des 2. Text+ Plenarys: Connecting People and Data am 28./29. September an der SUB Göttingen.
Enabling Open Science practices in Helmholtz!
Creators: name: Schrader, Antonia
name: Bertelmann, Roland
name: Bruch, Christoph
name: Ferguson, Lea Maria
name: Pampel, Heinz
name: Schultze-Motel, Paul
name: Weisweiler, Nina Leonie
Publisher: name: Zenodo
Year: 2022
Subjects: open science
open research data
FAIR
open access
open research software

description: The Helmholtz Open Science Office (OS Office) embraces this mission since it was founded by the Helmholtz Association in 2005. It supports the Helmholtz Association as a service provider in shaping the cultural change towards open science. Furthermore, it promotes dialogue on open science within and beyond Helmholtz and regularly offers events on open science developments to provide impulses and guidelines for the Helmholtz Association. In the area of open research data, the Helmholtz Open Science Office supports the Helmholtz Centers in developing policies and implementing corresponding practices for handling digital research data. Furthermore, the OS Office supports the discussion on the re-use and thus also reproducibility of research data in Helmholtz and the interdisciplinary exchange in this field. The National Research Data Infrastructure (NFDI) and the European Open Science Cloud (EOSC) represent central infrastructures in this context. Numerous NFDI consortia are being implemented with substantial Helmholtz participation, and Helmholtz Centers are also actively involved in the implementation of the EOSC. The OS Office actively animates and supports these activities. Helmholtz's participation in the international Research Data Alliance (RDA) and in Research Data Alliance Germany (RDA-DE) is also accompanied and coordinated by the Helmholtz Open Science Office. Moreover, the OS Office is active in third-party funded projects on open research data and persistent identifiers, such as re3data COREF and ORCID DE. The work of the Helmholtz Open Science Office thus complements the developments of platforms in the Helmholtz Incubator and contributes to the utilization of the FAIR principles in Helmholtz, such as the Helmholtz Metadata Collaboration (HMC).
Combating Antimicrobial Resistance With New-To-Nature Lanthipeptides Created by Genetic Code Expansion
Creators: name: Karbalaei-Heidari, Hamid Reza
name: Budisa, Nediljko
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: genetic code expansion
subject: chemoselectivity
subject: RiPPs
subject: lantibiotics
subject: non-canonical amino acids
subject: nisin
subject: superbugs
subject: synthetic biology

description: Due to the rapid emergence of multi-resistant bacterial strains in recent decades, the commercially available effective antibiotics are becoming increasingly limited. On the other hand, widespread antimicrobial peptides (AMPs) such as the lantibiotic nisin has been used worldwide for more than 40 years without the appearance of significant bacterial resistance. Lantibiotics are ribosomally synthesized antimicrobials generated by posttranslational modifications. Their biotechnological production is of particular interest to redesign natural scaffolds improving their pharmaceutical properties, which has great potential for therapeutic use in human medicine and other areas. However, conventional protein engineering methods are limited to 20 canonical amino acids prescribed by the genetic code. Therefore, the expansion of the genetic code as the most advanced approach in Synthetic Biology allows the addition of new amino acid building blocks (non-canonical amino acids, ncAAs) during protein translation. We now have solid proof-of-principle evidence that bioexpression with these novel building blocks enabled lantibiotics with chemical properties transcending those produced by natural evolution. The unique scaffolds with novel structural and functional properties are the result of this bioengineering. Here we will critically examine and evaluate the use of the expanded genetic code and its alternatives in lantibiotics research over the last 7 years. We anticipate that Synthetic Biology, using engineered lantibiotics and even more complex scaffolds will be a promising tool to address an urgent problem of antibiotic resistance, especially in a class of multi-drug resistant microbes known as superbugs.
Strong decays of the $XYZ$ states
Creators: name: Ma, Li
name: Liu, Xiao-Hai
name: Liu, Xiang
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Through the spin rearrangement scheme in the heavy quark limit, we have performed a comprehensive investigation of the decay pattern and production mechanism of the hidden beauty di-meson states, which are either composed of a P-wave bottom meson and an S-wave bottom meson or two S-wave bottom mesons. We further extend the corresponding formula to discuss the decay behavior of some charmonium-like states by combining the experimental information with our numerical results. The typical ratios presented in this work can be measured by future experiments like BESIII, Belle, LHCb and the forthcoming BelleII, which shall provide important clues to the inner structures of the exotic states.
description: 21pages, 12tables
Ökumenische Spiritualität - heute schon gelebt
Creators: name: Küng, Hans
name: Moltmann, Jürgen
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 47 Nr. 3 (2011): Concilium: Internationale Zeitschrift für Theologie, Band 47, Heft 3
Supplementary document for Weyl Semimetal Integrated 3-Unit Polarimeters - 6017004.pdf
Creators: name: Tian, Fugu
name: Jia, Yufei
name: Luo, Haokun
name: Arachchige, Hasitha
name: Mandrus, David
name: Lu, Jia Grace
name: Christodoulides, Demetrios
name: Khajavikhan, Mercedeh
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: Uncategorized

description: Supplemental document
Electron-to-ion Bulk Speed Ratio as a Parameter Reflecting the Occurrence of Strong Electron-dominated Current Sheets in the Solar Wind
Creators: name: Khabarova, Olga
name: Büchner, Jörg
name: Jain, Neeraj
name: Sagitov, Timothy
name: Malova, Helmi
name: Kislov, Roman
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 520 Astronomie und zugeordnete Wissenschaften
subject: solar wind
subject: current sheets
subject: CS
subject: astrophysical plasmas
subject: turbulent plasmas

description: Current sheets (CSs) are preferred sites of magnetic reconnection and energy dissipation in astrophysical plasmas. Electric currents in them may be carried by both electrons and ions. In our prior theoretical studies of the CS formation in turbulent plasmas, we utilized fully kinetic and hybrid code simulations with ions considered as particles and electrons—as a massless fluid. We found that electron-dominated CSs in which electrons become the main carriers of the electric current and contributors to energy dissipation may form inside or nearby ion-dominated CSs. These structures represent a distinguished type of CSs and should not be mixed up with so-called electron-scale CSs. Current simulations show that such CSs are characterized by the electron-to-ion bulk speed ratio (ue/ui) increases that can be seen at ion scales according to theoretical predictions and high-resolution observations from the Magnetospheric Multiscale mission. Therefore, applying the ue/ui parameter to the solar wind data may allow locating the strongest electron-dominated CSs with an ordinary spacecraft resolution of 1−3 s. This study shows that, indeed, electron-dominated CSs observed during a period of quiet solar wind conditions at 1 au impact the surrounding plasma, which may be reflected in sharp changes of ue/ui. Electron-dominated CSs are found to be localized in the vicinity of ion-dominated CSs identified via changes in the magnetic field and plasma parameters, displaying the same clustering. We conclude that ue/ui may be used as one of the key parameters for statistical studies of CSs in the solar wind and analyzing the role of electrons in them.
The variability of the Crab Nebula in radio: No radio counterpart to gamma-ray flares
Creators: name: Bietenholz, Michael F.
name: Yuan, Y.
name: Buehler, R.
name: Lobanov, A. P.
name: Blandford, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present new Jansky Very Large Array (VLA) radio images of the Crab Nebula at 5.5 GHz, taken at two epochs separated by 6 days about two months after a gamma-ray flare in 2012 July. We find no significant change in the Crab's radio emission localized to a region of <2 light-months in radius, either over the 6-day interval between our present observations or between the present observations and ones from 2001. Any radio counterpart to the flare has a radio luminosity of
description: Accepted to MNRAS; 13 pages, 6 figures
Presenting the Spatio-Temporal Model for Predicting and Determining Permissible Land Use Changes Based on Drinking Water Quality Standards: A Case Study of Northern Iran
Creators: name: Allahdad, Zahra
name: Malmasi, Saeed
name: Montazeralzohour, Morvarid
name: Sadeghi, Seyed Mohammad Moein
name: Khabbazan, Mohammad M.
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 333 Boden- und Energiewirtschaft
subject: catchment
subject: Iran
subject: Jajrood River
subject: spatiotemporal model
subject: surface water quality

description: Quantifying the effect of non-point source pollution from different land use types (e.g., agricultural lands, pastures, orchards, and urban areas) on stream water quality is critical in determining the extent and type of land use. The relationship between surface water quality as the primary source of drinking water and land use patterns in suburban areas with an accelerated pace of industrial development and progressive growth of population has drawn much attention recently. This study aims to determine the type and portion of the land use changes over three-time intervals from 2000 to 2015 in the Jajrood River Catchment (Tehran metropolis, north of Iran). We used satellite images of Landsat TM and ETM for 2005, 2010, and 2015 to analyze land use changes as a spatiotemporal model. According to the image processing and analysis, we classified the land uses of the study area into irrigated farming, orchards, pastures, and residential areas. In addition, we used temporal data from sampling stations to identify the relationship between land use and water quality based on a multivariate regression model. The analysis shows a significant correlation between the type and extent of land use and water quality parameters, including pH, Na+, Ca+, Mg+, Cl−, SO42−, NO3−, and TDS. Pastures and residential areas had the highest impact on water quality parameters among all land use types. Besides, we have used the regression analysis results to determine the maximum permissible areas of each land use type. Consequently, effective management strategies such as land use optimization in catchment scale for this catchment and similar areas will help to consciously protect and manage the quality of drinking water resources.
Ekster: A method to simulate star formation with low-resolution gas
Creators: name: Rieder, Steven
Publisher: name: Zenodo
Year: 2020

description: Star forming regions are often found in spiral arms of galaxies. Such regions are best simulated including their surroundings. These simulations therefore contain a large amount of mass, making SPH simulations that can resolve the formation of individual stars impractical.
 We present Ekster, a new AMUSE-based method that combines lower resolution SPH with star formation and stellar dynamics. With Ekster, we simulate 500x500 pc sections of spiral galaxies and study the formation of star clusters therein.
Point-contact tunneling spectroscopy measurement of Cu$_x$TiSe$_2$: disorder-enhanced Coulomb effects
Creators: name: Luna, Katherine
name: Wu, Phillip M.
name: Chen, Justin S.
name: Morosan, Emilia
name: Beasley, Malcolm R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We performed point-contact spectroscopy tunneling measurements on Cu$_x$TiSe$_2$ bulk with $x=0.02$ and $0.06$ at temperatures ranging from $T=4-40$ K and observe a suppression in the density of states around zero-bias that we attribute to enhanced Coulomb interactions due to disorder. We find that the correlation gap associated with this suppression is related to the zero-temperature resistivity. We use our results to estimate the disorder-free transition temperature and find that the clean limit $T_{c0}$ is close to the experimentally observed $T_c$.
description: 4 pages, 4 figures
Super-resolution method using sparse regularization for point-spread function recovery
Creators: name: Mboula, Fred Maurice Ngolè
name: Starck, Jean-Luc
name: Ronayette, Samuel
name: Okumura, Koryo
name: Amiaux, Jérôme
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In large-scale spatial surveys, such as the forthcoming ESA Euclid mission, images may be undersampled due to the optical sensors sizes. Therefore, one may consider using a super-resolution (SR) method to recover aliased frequencies, prior to further analysis. This is particularly relevant for point-source images, which provide direct measurements of the instrument point-spread function (PSF). We introduce SPRITE, SParse Recovery of InsTrumental rEsponse, which is an SR algorithm using a sparse analysis prior. We show that such a prior provides significant improvements over existing methods, especially on low SNR PSFs.
Mehrdeutigkeit und/oder Widerspruch. Herausforderungen bei der Modellierung literaturhistorischer Aussagen (Folien, PDF)
Creators: name: Hinzmann, Maria
name: Schöch, Christof
Publisher: name: Zenodo
Year: 2022

description: Maria Hinzmann, Christof Schöch: "Mehrdeutigkeit und/oder Widerspruch. Herausforderungen bei der Modellierung literaturhistorischer Aussagen"; 27. Deutscher Germanistentag 2022, Paderborn, 28.9.2022 (Vortragsfolien, PDF). Infos zum Panel: https://tcdh.uni-trier.de/de/event/panel-mehrdeutigkeiten-den-digital-humanities-wird-durch-das-tcdh-organisiert
3.5-keV X-ray line from nearly-degenerate WIMP dark matter decays
Creators: name: Chiang, Cheng-Wei
name: Yamada, Toshifumi
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The unidentified emission line at the energy of $\sim$3.5~keV observed in X-rays from galaxy clusters may originate from a process involving a dark matter particle. On the other hand, a weakly interacting massive particle (WIMP) has been an attractive dark matter candidate, due to its well-understood thermal production mechanism and its connection to physics at the TeV scale. In this paper, we pursue the possibility that the 3.5-keV X-ray arises from a late time decay of a WIMP dark matter into another WIMP dark matter, both of which have the mass of $O(100)$~GeV and whose mass splitting is about 3.5~keV. We focus on the simplest case where there are two Majorana dark matter particles and two charged scalars that couple with a standard model matter particle. By assuming a hierarchical structure in the couplings of the two dark matter particles and two charged scalars, it is possible to explain the 3.5-keV line and realize the WIMP dark matter scenario at the same time. Since the effective coupling of the two different Majorana dark matter particles and one photon violates CP symmetry, the model always contains a new source of CP violation, so the model's connection to the physics of electric dipole moments is discussed. The model's peculiar signatures at the LHC are also studied. We show the prospect of detecting the charged scalars through a detailed collider simulation.
title: Cyclisch konjugierte 5- und 7-Ringsysteme, I. Synthesen und Reaktionen von Fulvenaldehyden
Creators: name: Hafner, Klaus
name: Vöpel, Karl Heinz
name: Ploss, Gottfried
name: König, Claus
Publisher: name: Wiley-VCH
Year: 2023

description: Cyclopentadien und seine Derivate reagieren mit Dialkylformamiden und Phosphoroxychlorid unter Bildung von Mono- und Dialdehyden der 6-Dialkylaminofulvene. Die alkalische Hydrolyse dieser Aldehyde führt zu den stark aciden Mono- und Dialdehyden des 6-Hydroxy-fulvens. Die neuen Fulvenaldehyde sind Vinyloge von Carbonsäuren bzw. deren Amiden und gleichen diesen in ihren chemischen und physikalischen Eigenschaften.
Menschenhandel und Zwangsarbeit als globale Herausforderung für die Internationale Arbeitsorganisation und ihre Decent Work Agenda
Creators: name: Wahl, Stefanie
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 47 Nr. 3 (2011): Concilium: Internationale Zeitschrift für Theologie, Band 47, Heft 3
title: Model-Based Optimization of Solid-Supported Micro-Hotplates for Microfluidic Cryofixation
Creators: name: Thiem, Daniel B.
name: Szabo, Greta
name: Burg, Thomas P.
Publisher: name: MDPI
Year: 2024

description: Cryofixation by ultra-rapid freezing is widely regarded as the gold standard for preserving cell structure without artefacts for electron microscopy. However, conventional cryofixation technologies are not compatible with live imaging, making it difficult to capture dynamic cellular processes at a precise time. To overcome this limitation, we recently introduced a new technology, called microfluidic cryofixation. The principle is based on micro-hotplates counter-cooled with liquid nitrogen. While the power is on, the sample inside a foil-embedded microchannel on top of the micro-hotplate is kept warm. When the heater is turned off, the thermal energy is drained rapidly and the sample freezes. While this principle has been demonstrated experimentally with small samples (<0.5 mm²), there is an important trade-off between the attainable cooling rate, sample size, and heater power. Here, we elucidate these connections by theoretical modeling and by measurements. Our findings show that cooling rates of 10⁶ K s⁻¹, which are required for the vitrification of pure water, can theoretically be attained in samples up to ∼1 mm wide and 5 μm thick by using diamond substrates. If a heat sink made of silicon or copper is used, the maximum thickness for the same cooling rate is reduced to ∼3 μm. Importantly, cooling rates of 10⁴ K s⁻¹ to 10⁵ K s⁻¹ can theoretically be attained for samples of arbitrary area. Such rates are sufficient for many real biological samples due to the natural cryoprotective effect of the cytosol. Thus, we expect that the vitrification of millimeter-scale specimens with thicknesses in the 10 μm range should be possible using micro-hotplate-based microfluidic cryofixation technology.
Distributed Graph Automata and Verification of Distributed Algorithms
Creators: name: Reiter, Fabian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Combining ideas from distributed algorithms and alternating automata, we introduce a new class of finite graph automata that recognize precisely the languages of finite graphs definable in monadic second-order logic. By restricting transitions to be nondeterministic or deterministic, we also obtain two strictly weaker variants of our automata for which the emptiness problem is decidable. As an application, we suggest how suitable graph automata might be useful in formal verification of distributed algorithms, using Floyd-Hoare logic.
description: 26 pages, 6 figures, includes a condensed version of the author's Master's thesis arXiv:1404.6503. (This version of the article (v2) is identical to the previous one (v1), except for minor changes in phrasing.)
Floppy Disk Magazines - Preserving Forgotten Digital Heritage
Creators: name: Roeder, Torsten
Publisher: name: Zenodo
Year: 2023
Subjects: Digitales Kulturerbe
Heimcomputer
Sammlung
Textkorpus

description: Posterpräsentation im Rahmen des 2. Text+ Plenarys: Connecting People and Data am 28./29. September an der SUB Göttingen.
Energy levels, radiative rates and lifetimes for transitions in Br-like ions with 38 $\le$ Z $\le$ 42
Creators: name: Aggarwal, K. M.
name: Keenan, F. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Energy levels and radiative rates for transitions in five Br-like ions (Sr IV, Y V, Zr VI, Nb VII and Mo VIII) are calculated with the general-purpose relativistic atomic structure package ({\sc grasp}). Extensive configuration interaction has been included and results are presented among the lowest 31 levels of the 4s$^2$4p$^5$, 4s$^2$4p$^4$4d and 4s4p$^6$ configurations. Lifetimes for these levels have also been determined, although unfortunately no measurements are available with which to compare. However, recently theoretical results have been reported by Singh {\em et al} [Phys. Scr. {\bf 88} (2013) 035301] using the same {\sc grasp} code. But their reported data for radiative rates and lifetimes cannot be reproduced and show discrepancies of up to five orders of magnitude with the present calculations.
description: 24 pages including 16 Tables, will appear in Physica Scripta 89 (2014)
Production of $η$ and $η'$ Mesons on Nucleons and Nuclei
Creators: name: Krusche, B.
name: Wilkin, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The production of $η$ and $η^{\prime}$ mesons in photon- and hadron-induced reactions on free and quasi-free nucleons and on nuclei is reviewed. The extensive database on $γN \to ηN$, for both proton and neutron targets, is described in detail and its implications for the search for $N^{\star}$ resonances much heavier than the dominant $S_{11}(1535)$ discussed. Though less is currently known about the production of the $η^{\prime}$ or of $ηπ$ pairs, these also offer tantalizing prospects in the search for the missing isobars. The more limited data available on pion-induced production are still necessary ingredients in the partial wave analysis discussed. The production of the $η$-meson in $pp$ and $pn$ collisions shows once again the strong influence of the $S_{11}(1535)$ isobar, which is in contrast to the relatively weak behaviour seen near threshold for $η^{\prime}$ production. This difference is reflected in the important final state interaction effects of the $η$ in nuclei that may even lead to this meson being "bound" in some systems. The evidence for this is reviewed for both $γA$ and $p A$ collisions. The inclusive photoproduction of $η$, $η^{\prime}$, and $ηπ$ pairs from nuclei provides further information regarding the production mechanism and the interaction of the $η$ and $η^{\prime}$ with nuclei and the $ηπ$ pairs may even allow access to low mass $ηA$ systems that are forbidden in direct single-meson photoproduction.
description: accepted for publication in Progress in Particle and Nuclear Physics
Insecurity and its Economic Impact on Calabar Nightclubs, Nigeria.pdf
Creators: name: Onabe, Deborah  Bombum
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 389999
subject: Other economics not elsewhere classified

description: In rapidly urbanising areas like Calabar, Nigeria, nightclubs stood out as vital economic contributors. This study delved into the economic impact of insecurity on the nightclub industry within Calabar, Southern Cross River State. A qualitative method was employed, using purposive sampling to collect data from operators of nightclubs in the area. The results revealed fifteen active nightclubs in close proximity to significant crime hotspots. This proximity underscored potential public safety threats and the resulting economic challenges. The findings further showed a marked decline in patronage, revenue, and staffing during periods of heightened insecurity. The study concluded with recommendations for enhanced security, competent nightclub management, and strategic urban planning to ensure a safe and thriving nightlife in Calabar. These findings laid the groundwork for future research, informed policy discussions, and actions in cities facing similar challenges.
NIRISS aperture masking interferometry: an overview of science opportunities
Creators: name: Artigau, Étienne
name: Sivaramakrishnan, Anand
name: Greenbaum, Alexandra Z.
name: Doyon, René
name: Goudfrooij, Paul
name: Fullerton, Alex W.
name: Lafrenière, David
name: Volk, Kevin
name: Albert, Loïc
name: Martel, André
name: Ford, K. E. Saavik
name: McKernan, Barry L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: JWST's Near-Infrared Imager and Slitless Spectrograph (NIRISS) includes an Aperture Masking Interferometry (AMI) mode designed to be used between 2.7μm and 4.8μm. At these wavelengths, it will have the highest angular resolution of any mode on JWST, and, for faint targets, of any existing or planned infrastructure. NIRISS AMI is uniquely suited to detect thermal emission of young massive planets and will permit the characterization of the mid-IR flux of exoplanets discovered by the GPI and SPHERE adaptive optics surveys. It will also directly detect massive planets found by GAIA through astrometric accelerations, providing the first opportunity ever to get both a mass and a flux measurement for non-transiting giant planets. NIRISS AMI will also enable the study of the nuclear environment of AGNs.
description: Presented at SPIE Astronomical Telescopes + Instrumentation 2014
EMPLOYEES PARTICIPATION, JOB SATISFACTION AND JOB PERFORMANCE IN THE JORDANIAN INCOME AND SALES TAX DEPARTMENT
Creators: name: ABDULKAREEM M. ALARABIAT
name: KASYPI MOKHTAR
name: RAED H. WISHAH
name: MOHD S. MUDA
name: MOHAMMAD SHABAN ALSMADI
name: MOHAMMAD MUSTAFA DAKHLALLH
Publisher: name: Zenodo
Year: 2023
Subjects: Employees Participation, Job Satisfaction, Job Performance, SEM.

description: Abstract
This study aims to investigate the mediating effect of job satisfaction in the Jordanian Income and Sales Tax Department on the relationship between employee's participation and job performance. This research used questionnaires to obtain data from the Jordanian Income and Sales Tax Department employees. To decide whether a relationship exists between the mediator, independent, and dependent variables, Structural Equation Modelling (SEM) was used. For the study, 310 were true from the questionnaires administered. The findings showed a major positive relationship between employee participation and job performance. The results of this study showed that employee participation substantially increases an individual's job satisfaction. In addition, the outcome showed that work satisfaction has a partial mediation effect on employee's participation and job performance in the Jordanian Department of Income and Sales Tax. Therefore, this study indicated that by concentrating on decision-making participation (DMP), all managers who are intended and assigned to increase the efficiency of general industries will achieve their objectives and goals through job satisfaction. In addition, the perception of authoritative support for the prosperity of their workers will yield and trigger further employee output to build the efficiency of the business partnership where companies will familiarise DMP with improved job performance. This study encourages a debate on the impact on social exchange and non-financial aspects of the trading of apparent hierarchical aid. This research suggests how to create employee outcomes by concentrating on the employee's sense of authoritative concern for them and including them in DMP that does not contain any financial benefits.
Wide-field adaptive optics performance in cosmological deep fields for multi-object spectroscopy with the European Extremely Large Telescope
Creators: name: Basden, Alastair
name: Evans, Chris
name: Morris, Tim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A multi-object spectrograph on the forthcoming European Extremely Large Telescope will be required to operate with good sky coverage. Many of the interesting deep cosmological fields were deliberately chosen to be free of bright foreground stars, and therefore are potentially challenging for adaptive optics (AO) systems. Here we investigate multi-object AO performance using sub-fields chosen at random from within the Great Observatories Origins Deep Survey (GOODS)-S field, which is the worst case scenario for five deep fields used extensively in studies of high-redshift galaxies. Our AO system model is based on that of the proposed MOSAIC instrument but our findings are equally applicable to plans for multi-object spectroscopy on any of the planned Extremely Large Telescopes. Potential guide stars within these sub-fields are identified and used for simulations of AO correction. We achieve ensquared energies within 75~mas of between 25-35\% depending on the sub-field, which is sufficient to probe sub-kpc scales in high-redshift galaxies. We also investigate the effect of detector readout noise on AO system performance, and consider cases where natural guide stars are used for both high-order and tip-tilt-only AO correction. We also consider how performance scales with ensquared energy box size. In summary, the expected AO performance is sufficient for a MOSAIC-like instrument, even within deep fields characterised by a lack of bright foreground stars.
description: Accepted for publication in MNRAS
Charge exchange reaction by Reggeon exchange and W$^{+}$W$^{-}$-fusion
Creators: name: Schicker, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Charge exchange reactions at high energies are examined. The existing cross section data on the Reggeon induced reaction pp $\rightarrow$ n + $Δ^{++}$ taken at the ZGS and ISR accelerators are extrapolated to the energies of the RHIC and LHC colliders. The interest in the charge exchange reaction induced by $W^{\pm}$-fusion is presented, and the corresponding QCD-background is examined.
description: 4 pages, 4 figures, to appear in Proceedings Diffraction 2014, Primosten, Croatia, sept 10-16, 2014
Efficiency tests for estimating the gas and stellar population parameters in Type 2 objects
Creators: name: Bon, N.
name: Popovic, L. C.
name: Bon, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigated the efficiency of estimating characteristics of stellar populations (SP) and Active Galactic Nuclei (AGN) emission using ULySS code. To analyse simultaneously AGN and SP components in the integrated spectrum of Type 2 active galaxies, we modelled the featureless continuum (FC) and emission lines, and we used PEGASE.HR stellar population models provided by ULySS. In order to validate the method, we simulated over 7000 integrated spectra of Seyfert 2 galaxies. Spectra were generated using different characteristics of the featureless AGN continuum, signal-to-noise ratio (SNR), spectral ranges, properties of emission lines and single stellar population (SSP) model whose initial mass function (IMF) and abundance pattern is similar to the solar neighbourhood. Simulated spectra were fitted with ULySS to evaluate the ability of the method to extract SP and AGN properties. We found that the analysis with ULySS can efficiently restore the characteristics of SP in spectra of Seyfert 2 AGNs, where signal-to-noise ratio is higher than 20, and where SP contributes with more than 10% to the total flux. Degeneracies between AGN and SP parameters increase with increasing the AGN continuum fraction, which points out the importance of simultaneous fitting of the FC and SP contributions.
description: 28 pages, 8 figures, appears in Advances in Space Research (2014)
Food-Safety Practices and Rule Coverage Vary Among Post-Harvest Handlers of Fresh Produce, ERS Survey Finds
Creators: name: Yeh, D. Adeline
name: Astill, Gregory
name: Yeh, D. Adeline
name: Astill, Gregory
Publisher: name: Unknown
Year: 2022

description: After Congress passed the Food Safety Modernization Act (FSMA) in 2011, the U.S. Food and Drug Administration (FDA) created rules to better prevent the spread of foodborne illness. The rules pertain to nearly every aspect of the food supply chain: food as it is grown, harvested, and packed on farms; food as it is processed after harvest; and food stored, transported, and handled by distributors and retailers. Two of those rules are the Preventive Controls Rule, which covers facilities that process commodities into different products, and the Produce Safety Rule, which covers farms that grow fruits or vegetables and may also perform post-harvest activities such as sorting, washing, or packing. For produce, the supply chain is made up of a diverse variety of operations, some of which were more prepared for the new food safety rules than others.
title: Walking on Virtual Surface Patterns Leads to Changed Control Strategies
Creators: name: Stasica, Maximilian
name: Honekamp, Celine
name: Streiling, Kai
name: Penacchio, Olivier
name: Dam, Loes van
name: Seyfarth, André
Publisher: name: MDPI
Year: 2024

description: Inclusive design does not stop at removing physical obstacles such as staircases. It also involves identifying architectural features that impose sensory burdens, such as repetitive visual patterns that are known to potentially cause dizziness or visual discomfort. In order to assess their influence on human gait and its stability, three repetitive patterns—random dots, repetitive stripes, and repetitive waves (Lisbon pattern)—were displayed in a coloured and greyscale variant in a virtual reality (VR) environment. The movements of eight participants were recorded using a motion capture system and electromyography (EMG). During all test conditions, a significant increase in the muscular activity of leg flexor muscles was identified just before touchdown. Further, an increase in the activity of laterally stabilising muscles during the swing phase was observed for all of the test conditions. The lateral and vertical centre of mass (CoM) deviation was statistically evaluated using a linear mixed model (LMM). The patterns did cause a significant increase in the CoM excursion in the vertical direction but not in the lateral direction. These findings are indicative of an inhibited and more cautious gait style and a change in control strategy. Furthermore, we quantified the induced discomfort by using both algorithmic estimates and self-reports. The Fourier-based methods favoured the greyscaled random dots over repetitive stripes. The colour metric favoured the striped pattern over the random dots. The participants reported that the wavey Lisbon pattern was the most disruptive. For architectural and structural design, this study indicates (1) that highly repetitive patterns should be used with care in consideration of their impact on the human visuomotor system and its behavioural effects and (2) that coloured patterns should be used with greater caution than greyscale patterns.
How could Blockchain be a Key Resource in the Value CreationProcess of a Local Currency? A Case Study Centered on Eusko
Creators: name: Pinos, Fabienne
Publisher: name: International Journal of Community Currency Research (IJCCR)
Year: 2020
Subjects: local currency
blockchain
value creation
trust
transition

description: Blockchain is seen as a major financial innovation for the years tocome; it interests financial industry as well as some localcurrencies. Thus, it seems appropriate to analyze how Blockchain couldbe a key resource in the value creation process of a local currency.Our article aims first to analyze the potential contributions ofBlockchain for local currencies. Then, we compare these contributionsto the key resources and activities identified in the study of thevalue creation process of Eusko, the first European currency incirculation since the end of 2018. Launched in June 2011, managed bythe association Euskal Moneta (EM), this initiative aims at creatingvalue that can be considered as public value (Moore, 1995). We use thecanvas of Osterwalder & al. (2011) to identify the key resources andactivities of EM's business model and explore how blockchaintechnology might or might not support them.We show that several factors can slow or even preclude the adoption ofsuch a technology in an innovative context that solicits, in variousforms, the adaptive capacities of project stakeholders. Through thiscase study, we wish to contribute to develop knowledge about economicmodels of local currencies.