cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Global diffusion of franchising: A country level examination
Creators: name: Hoffman, Richard C.
name: Preble, John F.
Publisher: name: Maryland Shared Open Access Repository
Year: 2001
Subjects: Franchising
Multinational Corporations

description: Franchising has experienced rapid international growth. This study examines strategic and country characteristics in twenty-four nations to explain the spread of franchising across borders. The size of the franchising sector along with the country factors of per capita income, urbanization, media availability, and certain cultural values were positively associated with franchising diffusion. Contrary to expectations, strategic characteristics were more important than country characteristics in explaining franchising diffusion. The implications of these findings for practice and research are discussed.
Ioffe-Regel criterion and viscoelastic properties of amorphous solids
Creators: name: Conyuh, D. A.
name: Beltukov, Y. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We show that viscoelastic effects play a crucial role in the damping of vibrational modes in harmonic amorphous solids. The relaxation of a given plane wave is described by a memory function of a semi-infinite one-dimensions mass-spring chain. The initial vibrational energy spreads from the first site of the chain to infinity. In the beginning of the chain, there is a barrier, which significantly reduces the decay of vibrational energy below the Ioffe-Regel frequency. To obtain the parameters of the chain, we present a numerically stable method, based on the Chebyshev expansion of the local vibrational density of states.
Unterricht partizipativ gestalten
Creators: name: Keuler, Charlotte
Publisher: name: Universität Trier
Year: 2019
Subjects: subject: Luxemburg
subject: Deutschland
subject: Unterricht
subject: Schüler
subject: Schülermitverwaltung
subject: Mitbestimmung
subject: Rückmeldung
subject: Leistungsbewertung

description: Fachunterricht ist der zentrale Erfahrungsraum im Sozialisationsumfeld Schule. Er prägt schon allein aufgrund seines hohen zeitlichen Anteils im Tagesverlauf und der grundlegenden Funktion von Schule Handeln und Wahrnehmung von Lehrpersonen und Lernenden. Umso wichtiger ist es, ihn in die Gestaltung einer demokratischen Schulkultur einzubeziehen.
Adaptation in simple and complex fitness landscapes
Creators: name: Jain, Kavita
name: Krug, Joachim
Publisher: name: arXiv
Year: 2005
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: This is an introductory review of deterministic mutation-selection models for asexual populations (i.e., quasispecies theory) and related topics. First, the basic concepts of fitness, mutations, and sequence space are introduced. Different types of mutation-selection dynamics are defined and their relation to problems of statistical physics are outlined. Then the stationary population distribution in simple, single peak fitness landscapes is discussed at length, with particular emphasis on the error threshold phenomenon. Extensions of the theory covering e.g. epistatic interactions, diploid organisms, semiconservative replication and time-dependent fitness peaks are briefly described. A further section is devoted to randomly rugged fitness landscapes, which may display fitness correlations of various degree as well as extended neutral networks. The final two sections address evolutionary dynamics in both rugged and smooth fitness landscapes, and provide a brief overview of pertinent experiments.
description: To appear in "Structural approaches to sequence evolution: Molecules, networks and populations", ed. by U. Bastolla, M. Porto, H.E. Roman and M. Vendruscolo
Leistungsbewertung partizipativ gestalten
Creators: name: Frisch, Julia
Publisher: name: Universität Trier
Year: 2019
Subjects: subject: Luxemburg
subject: Deutschland
subject: Unterricht
subject: Schüler
subject: Schülermitverwaltung
subject: Mitbestimmung
subject: Rückmeldung
subject: Leistungsbewertung

description: Bewertungsprozesse in der Schule als Möglichkeit nutzen, um Schüler*innen bei der realistischen Einschätzung und Weiterentwicklung ihrer Lernprozesse und ihres Lernverhaltens zu unterstützen: Die partizipative Leistungsbewertung bietet verschiedene praxisnahe Ansätze zur Förderung von Lernmotivation, Selbstreflexion und demokratischem Verständnis.
A note on the peeling theorem in higher dimensions
Creators: name: Pravdova, A.
name: Pravda, V.
name: Coley, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We demonstrate the ``peeling property'' of the Weyl tensor in higher dimensions in the case of even dimensions (and with some additional assumptions), thereby providing a first step towards understanding of the general peeling behaviour of the Weyl tensor, and the asymptotic structure at null infinity, in higher dimensions.
description: 5 pages, to appear in Class. Quantum Grav
Atomic-Level Features for Kinetic Monte Carlo Models of Complex Chemistry from Molecular Dynamics Simulations
Creators: name: Dufour-Décieux, Vincent
name: Freitas, Rodrigo
name: Reed, Evan J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The high computational cost of evaluating atomic interactions recently motivated the development of computationally inexpensive kinetic models, which can be parametrized from MD simulations of complex chemistry of thousands of species or other processes and accelerate the prediction of the chemical evolution by up to four order of magnitude. Such models go beyond the commonly employed potential energy surface fitting methods in that they are aimed purely at describing kinetic effects. So far, such kinetic models utilize molecular descriptions of reactions and have been constrained to only reproduce molecules previously observed in MD simulations. Therefore, these descriptions fail to predict the reactivity of unobserved molecules, for example in the case of large molecules or solids. Here we propose a new approach for the extraction of reaction mechanisms and reaction rates from MD simulations, namely the use of atomic-level features. Using the complex chemical network of hydrocarbon pyrolysis as example, it is demonstrated that kinetic models built using atomic features are able to explore chemical reaction pathways never observed in the MD simulations used to parametrize them. Atomic-level features are shown to construct reaction mechanisms and estimate reaction rates of unknown molecular species from elementary atomic events. Through comparisons of the model ability to extrapolate to longer simulation timescales and different chemical compositions than the ones used for parameterization, it is demonstrated that kinetic models employing atomic features retain the same level of accuracy and transferability as the use of features based on molecular species, while being more compact and parametrized with less data. We also find that atomic features can better describe the formation of large molecules enabling the simultaneous description of small molecules and condensed phases.
description: 16 pages, 10 figures
Mitigation of Pulsed Interference to Redshifted HI and OH Observations between 960 and 1215 MHz
Creators: name: Fisher, J. R.
name: Zhang, Q.
name: Zheng, Y.
name: Wilson, S. G.
name: Bradley, R. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The neutral hydrogen 21-cm spectral line (1420.4 MHz) and the four 18-cm lines of the hydroxyl molecule (1612-1720 MHz) are observable at redshifts which put their measured line frequencies well below their protected frequency bands. Part of the redshift ranges (z = 0.171-0.477 for HI and z = 0.37-0.73 for OH) fall in the 960 to 1215 MHz band that is allocated to aircraft navigation. Most of the signals in this band are pulsed emissions of low duty cycle so much of the time between pulses is interference free. This paper outlines the structure and measured properties of signals in this band and demonstrates a signal processing strategy that is effective at removing the pulsed signals from spectra at sensitivities produced by several hours of integration.
description: Astronomical Journal, May 2005, in press
Lattice effects on the spin dynamics in antiferromagnetic molecular rings
Creators: name: Spanu, Leonardo
name: Parola, Alberto
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate spin dynamics in antiferromagnetic (AF) molecular rings at finite temperature in the presence of spin-phonon (s-p) interaction. We derive a general expression for the spin susceptibility in the weak s-p coupling limit and then we focus on the low-frequency behavior, in order to discuss a possible microscopic mechanism for nuclear relaxation in this class of magnetic materials. To lowest order in a perturbative expansion, we find that the susceptibility takes a Lorentzian profile and all spin operators ($S^x$, $S^y, S^z$) contribute to spin dynamics at wave vectors $q\ne 0$. Spin anisotropies and local s-p coupling play a key role in the proposed mechanism. Our results prove that small changes in the spatial symmetry of the ring induce qualitative changes in the spin dynamics at the nuclear frequency, providing a novel mechanism for nuclear relaxation. Possible experiments are proposed.
description: 4 pages, 2 figures. to appear in PRB
Expansion and Age of the Supernova Remnant G350.1-0.3: High-Velocity Iron Ejecta from a Core-Collapse Event
Creators: name: Borkowski, K. J.
name: Miltich, W.
name: Reynolds, S. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report Chandra observations of the highly asymmetric core-collapse supernova remnant G350.1-0.3. We document expansion over 9 years away from the roughly stationary central compact object, with sky-plane velocities up to $5000 d_{4.5}$ km s$^{-1}$ ($d_{4.5}$ is the distance in units of 4.5 kpc), redshifts ranging from 900 km s$^{-1}$ to 2600 km s$^{-1}$, and three-dimensional space velocities approaching 6000 km s$^{-1}$. Most of the bright emission comes from heavy-element ejecta particularly strong in iron. Iron-enhanced ejecta are seen at 4000 - 6000 km s$^{-1}$, strongly suggesting that the supernova was not a common Type IIP event. While some fainter regions have roughly solar abundances, we cannot identify clear blast-wave features. Our expansion proper motions indicate that G350.1-0.3 is no more than about 600 years old, independent of distance: the third youngest known core-collapse supernova in the Galaxy, and one of the most asymmetric.
description: 8 pages, 4 figures, ApJ Letters in press, minor revisions
Retrieve, Program, Repeat: Complex Knowledge Base Question Answering via Alternate Meta-learning
Creators: name: Hua, Yuncheng
name: Li, Yuan-Fang
name: Haffari, Gholamreza
name: Qi, Guilin
name: Wu, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: A compelling approach to complex question answering is to convert the question to a sequence of actions, which can then be executed on the knowledge base to yield the answer, aka the programmer-interpreter approach. Use similar training questions to the test question, meta-learning enables the programmer to adapt to unseen questions to tackle potential distributional biases quickly. However, this comes at the cost of manually labeling similar questions to learn a retrieval model, which is tedious and expensive. In this paper, we present a novel method that automatically learns a retrieval model alternately with the programmer from weak supervision, i.e., the system's performance with respect to the produced answers. To the best of our knowledge, this is the first attempt to train the retrieval model with the programmer jointly. Our system leads to state-of-the-art performance on a large-scale task for complex question answering over knowledge bases. We have released our code at https://github.com/DevinJake/MARL.
description: 8 pages, 2 figures, published in IJCAI 2020
Goldschmidt, Dietrich: Frieden mit der Sowjetunion - eine unerledigte Aufgabe
Creators: name: Raiser, Konrad
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 38 Nr. 4 (1989): Ökumenische Rundschau, Band 38, Heft 4
How strongly does dating meteorites constrain the time-dependence of the fine-structure constant?
Creators: name: Fujii, Yasunori
name: Iwamoto, Akira
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review our argument on the nature of the so-called meteorite constraint on the possible time-dependence of the fine-structure constant, emphasizing that dating meteorites at the present time is different in principle from searching directly for the traces in the past, as in the Oklo phenomenon and the QSO absorption lines. In the related literature, we still find some arguments not necessarily consistent with this difference to be taken properly into account. It does not immediately follow that any model-dependent approaches are useless in practice, though we cannot help suspecting that dating meteorites is no match for the Oklo and the QSO in probing the time-variability of the fine-structure constant, at this moment. Some of the relevance to the QSO data particularly in terms of the scalar field will be discussed.
description: 18 pages, 6 figures, review article
Genetic analysis of ovule development and seed coat mucilage production in arabidopsis thaliana
Creators: name: Western, Tamara Lynn
Publisher: name: University of British Columbia
Year: 2009

description: Recently, many genes involved in the regulation of ovule development have been identified in Arabidopsis thaliana. One of diese genes is BEUL1 (BEEi), which is involved in the production of ovule integuments and is thought to work at least partially through the suppression of the floral organ identity gene, AGAMOUS (AG). A new investigation of the genetic interactions between BEL.1 and AG has shown that both genes have active roles throughout ovule morphogenesis. BEL.1 and AG act early in ovule development in a partially redundant manner to direct ovule identity. The abnormal integument development characteristic of the Bell mutant phenotype was found to be dependent on AG function, suggesting that BEL.1 and AG work in combination to promote normal integument morphogenesis. Finally, BEL1 appears to be required for embryo sac development independent of other aspects of ovule morphogenesis and AG function. Another floral organ identity gene that is thought to act in ovule development is APETAEA2 (AP2). This has been confirmed through quantitation of ovule phenotypes in multiple alleles, which revealed that in the absence of AP2 function there is sporadic production of multiple types of abnormal ovules. These data suggest that AP2 may stabilize developmental decisions throughout ovule development. During seed development, many plants synthesize and secrete a vast quantity of pectin in the form of mucilage between the plasma membrane and outer cell wall of their epidermal cells. The production of mucilage during Arabidopsis seed coat development was studied and then exploited in a novel screen for mutants defective in polysaccharide synthesis, deposition, and extrusion. Mutations in five novel genes, MUCILAGE-MODIFIED (MUM) 1—5 were isolated, and were studied along with mutants defective in four previously identified loci that affect seed coat development (TRANSPARENT TESTA GLABRA1 [TTG1], GLABRA2 [GU], ABERRANT TESTA SHAPE [ATS], and AP2). The phenotypes of the mutants suggest that AP2 and ATS regulate general seed coat development, while MUM4, TTG1, and GL2 affect the epidermal cell structure and mucilage amount. In addition, MUM3 and MUM5 control mucilage composition, and MUM1 and MUM2 affect its extrusion beyond the outer cell wall.
Temperature independent cuprate pseudogap from planar oxygen NMR
Creators: name: Nachtigal, Jakob
name: Avramovska, Marija
name: Erb, Andreas
name: Pavićević, Danica
name: Guehne, Robin
name: Haase, Jürgen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Planar oxygen nuclear magnetic resonance (NMR) relaxation and shift data from all cuprate superconductors available in the literature are analyzed. They reveal a temperature independent pseudogap at the Fermi surface, which increases with decreasing doping in family specific ways, i.e., for some materials the pseudogap is substantial at optimal doping while for others it is nearly closed at optimal doping. The states above the pseudogap, or in its absence are similar for all cuprates and doping levels, and Fermi liquid-like. If the pseudogap is assumed exponential it can be as large as about 1500 K for the most underdoped systems, relating it to the exchange coupling. The pseudogap can vary substantially throughout a material, being the cause of cuprate inhomogeneity in terms of charge and spin, and consequences for the NMR analyses are discussed. This pseudogap appears to be in agreement with the specific heat data measured for the YBaCuO family of materials, long ago. Nuclear relaxation and shift show deviations from this scenario near $T_{\mathrm{c}}$, possibly due to other in-gap states.
description: 26 pages, 9 figures
Extreme X-ray Behavior of the Low-Luminosity Active Nucleus in NGC 4395
Creators: name: Moran, Edward C.
name: Eracleous, Michael
name: Leighly, Karen M.
name: Chartas, George
name: Filippenko, Alexei V.
name: Ho, Luis C.
name: Blanco, Philip R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a 17 ks Chandra ACIS-S observation of the nearby dwarf spiral galaxy NGC 4395. Chandra affords the first high-quality, broadband X-ray detection of the active nucleus of this object that is uncontaminated by nearby sources in the field. We find the nuclear X-ray source to be unresolved and confirm the rapid, large-amplitude variability reported in previous studies. The light curve appears to show ~ 11 cycles of a quasi-periodic oscillation with a period of ~ 400 s. If associated with an orbital feature near the innermost stable orbit of the accretion disk, this period would constrain the black-hole mass to be M < 9e5 M_sun. The X-ray spectrum indicates absorption by an ionized medium, and the spectral shape appears to vary over the course of our observation. Contrary to prior reports, however, the spectral variations are uncorrelated with changes in the hard X-ray flux. It is possible that the short-term spectral variability we observe results from column density fluctuations in the ionized absorber. A power-law fit to the spectrum above 1 keV yields a photon index of Gamma ~ 0.6, much flatter than that typically observed in the spectra of Seyfert 1 galaxies. We have ruled out photon pile-up as the cause of the flat spectrum. Even when complex spectral features are considered, the photon index is constrained to be Gamma < 1.25 (90% confidence). Comparing our results with previous determinations of the photon index (Gamma = 1.46 and 1.72), we conclude that the slope of the primary continuum varies significantly on time scales of a year or less. The extreme flatness and dramatic long-term variability of the X-ray spectrum are unprecedented among active galactic nuclei.
description: 28 pages, including 10 figures. Accepted for publication in The Astronomical Journal
Beteiligung von Lernenden an der Unterrichtsgestaltung am Lycée Ermesinde
Creators: name: Molitor, Anne
Publisher: name: Universität Trier
Year: 2019
Subjects: subject: Luxemburg
subject: Deutschland
subject: Unterricht
subject: Schüler
subject: Schülermitverwaltung
subject: Mitbestimmung
subject: Rückmeldung
subject: Leistungsbewertung

description: Partizipativer Unterricht, der nicht nur aus punktuell erlebter Teilnahme besteht, ist — wie Charlotte Keuler es im Leitartikel des vorliegenden Heftes formuliert — durch die Herausforderungen, vor die uns unsere globalisierte Welt stellt, in vielerlei Hinsicht unabdingbar geworden. Kommunikationsfähigkeit, interkulturelle Kompetenz, Wissensmanagement und andere oft zitierte „soft skills“ sind Schlüsselkompetenzen des 21. Jahrhunderts.
THE SIGNIFICANCE OF THE USAGE OF SYNONYMS AND  THEIR ROLE IN LINGUISTICS
Creators: name: Davlatova, Hulkaroy
name: Abdurakhmanova, Hulkaroy
Publisher: name: Zenodo
Year: 2024

description: This article discusses the importance of synonyms in English, their usage of them, and subsequent feedback. In addition, English and Uzbek synonyms are compared and presented in different and unique ways. Usually, synonyms serve to enrich the language, and it is precisely this aspect that is noteworthy. The article also provides more detailed information on this.
title: Die Freiheit nutzen - Mitbestimmung in der Vorschule
title: ein Besuch im "Alen Tramschapp" in Luxemburg-Stadt
titleType: Subtitle
Creators: name: Schilt, Michèle
Publisher: name: Universität Trier
Year: 2019
Subjects: subject: Luxemburg
subject: Deutschland
subject: Unterricht
subject: Schüler
subject: Schülermitverwaltung
subject: Mitbestimmung
subject: Rückmeldung
subject: Leistungsbewertung

description: Partizipation im Unterricht von klein auf – geht das? Braucht man für Diskussionen, Aushandlungs-und Entscheidungsprozesse nicht eine bestimmte Reife, über die Dreijährige noch gar nicht verfügen? Das mateneen-Team hat sich auf Limpertsberg ein Bild von der Arbeit mit Vorschulkindern gemacht und festgestellt: das geht sehr wohl!
Continental-scale streamflow modeling of basins with reservoirs: towards a coherent deep-learning-based strategy
Creators: name: Ouyang, Wenyu
name: Lawson, Kathryn
name: Feng, Dapeng
name: Ye, Lei
name: Zhang, Chi
name: Shen, Chaopeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: A large fraction of major waterways have dams influencing streamflow, which must be accounted for in large-scale hydrologic modeling. However, daily streamflow prediction for basins with dams is challenging for various modeling approaches, especially at large scales. Here we examined which types of dammed basins could be well represented by long short-term memory (LSTM) models using readily-available information, and delineated the remaining challenges. We analyzed data from 3557 basins (83% dammed) over the contiguous United States and noted strong impacts of reservoir purposes, degree of regulation (dor), and diversion on streamflow modeling. While a model trained on a widely-used reference-basin dataset performed poorly for non-reference basins, the model trained on the whole dataset presented a median Nash-Sutcliffe efficiency coefficient (NSE) of 0.74. The zero-dor, small-dor (with storage of approximately a month of average streamflow or less), and large-dor basins were found to have distinct behaviors, so migrating models between categories yielded catastrophic results, which means we must not treat small-dor basins as reference ones. However, training with pooled data from different sets yielded optimal median NSEs of 0.72, 0.79, and 0.64 for these respective groups, noticeably stronger than existing models. These results support a coherent modeling strategy where smaller dams (storing about a month of average streamflow or less) are modeled implicitly as part of basin rainfall-runoff processes; then, large-dor reservoirs of certain types can be represented explicitly. However, dammed basins must be present in the training dataset. Future work should examine separate modeling of large reservoirs for fire protection and irrigation, hydroelectric power generation, and flood control.
Simple model of the static exchange-correlation kernel of a uniform electron gas with long-range electron-electron interaction
Creators: name: Toulouse, Julien
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A simple approximate expression in real and reciprocal spaces is given for the static exchange-correlation kernel of a uniform electron gas interacting with the long-range part only of the Coulomb interaction. This expression interpolates between the exact asymptotic behaviors of this kernel at small and large wave vectors which in turn requires, among other thing, information from the momentum distribution of the uniform electron gas with the same interaction that have been calculated in the G0W0 approximation. This exchange-correlation kernel as well as its complement analogue associated to the short-range part of the Coulomb interaction are more local than the Coulombic exchange-correlation kernel and constitute potential ingredients in approximations for recent adiabatic connection fluctuation-dissipation and/or density functional theory approaches of the electronic correlation problem based on a separate treatment of long-range and short-range interaction effects.
description: 14 pages, 14 figures, to be published in Phys. Rev. B
MPEC 2024-A72 : 2024 AL1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 AL1

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.
Non-planar form factors of generic local operators via on-shell unitarity and color-kinematics duality
Creators: name: Lin, Guanda
name: Yang, Gang
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Form factors, as quantities involving both local operators and asymptotic particle states, contain information of both the spectrum of operators and the on-shell amplitudes. So far the studies of form factors have been mostly focused on the large Nc planar limit, with a few exceptions of Sudakov form factors. In this paper, we discuss the systematical construction of full color dependent form factors with generic local operators. We study the color decomposition for form factors and discuss the general strategy of using on-shell unitarity cut method. As concrete applications, we compute the full two-loop non-planar minimal form factors for both half-BPS operators and non-BPS operators in SU(2) sector in N=4 SYM. Another important aspect is to investigate the color-kinematics (CK) duality for form factors with high-length operators. Explicit CK dual representation is found for the two-loop half-BPS minimal form factors with arbitrary number of external legs. The full-color two-loop form factor results provide an independent check of the infrared dipole formula for two-loop n-point amplitudes. By extracting the UV divergence, we also reproduce the known two-loop non-planar SU(2) dilatation operator. As for the finite remainder function, interestingly, the non-planar part is found to contain a new maximally transcendental part beyond the known planar result.
description: v2: 88 pages, 18 figures; references added
Böhm, Manfred: Gottes Reich und Gesellschaftsveränderung
Creators: name: Raiser, Konrad
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 38 Nr. 4 (1989): Ökumenische Rundschau, Band 38, Heft 4
Personal Augmented Reality for Information Visualization on Large Interactive Displays
Creators: name: Reipschläger, Patrick
name: Flemisch, Tamara
name: Dachselt, Raimund
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.1

description: In this work we propose the combination of large interactive displays with personal head-mounted Augmented Reality (AR) for information visualization to facilitate data exploration and analysis. Even though large displays provide more display space, they are challenging with regard to perception, effective multi-user support, and managing data density and complexity. To address these issues and illustrate our proposed setup, we contribute an extensive design space comprising first, the spatial alignment of display, visualizations, and objects in AR space. Next, we discuss which parts of a visualization can be augmented. Finally, we analyze how AR can be used to display personal views in order to show additional information and to minimize the mutual disturbance of data analysts. Based on this conceptual foundation, we present a number of exemplary techniques for extending visualizations with AR and discuss their relation to our design space. We further describe how these techniques address typical visualization problems that we have identified during our literature research. To examine our concepts, we introduce a generic AR visualization framework as well as a prototype implementing several example techniques. In order to demonstrate their potential, we further present a use case walkthrough in which we analyze a movie data set. From these experiences, we conclude that the contributed techniques can be useful in exploring and understanding multivariate data. We are convinced that the extension of large displays with AR for information visualization has a great potential for data analysis and sense-making.
description: This work has been accepted for the IEEE VIS 2020 conference and will be published in the IEEE Transactions on Visualization and Computer Graphics journal. ACM 2012 CCS - Human-centered computing, Visualization, Visualization design and evaluation methods
A new sample of broad-absorption-line quasars exhibiting the ghost of lyman alpha
Creators: name: North, M.
name: Knigge, C.
name: Goad, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have searched the broad-absorption-line quasar (BAL QSO) sample presented by Reichard et al. for objects exhibiting the so-called `ghost of Lyman alpha'. This ghost manifests as a hump near -5900kms in the troughs of the broad absorption lines and provides strong evidence for the importance of line-driving in powering the outflows from BAL QSOs. Of the 224 sample BAL QSOs selected from the Sloan Digital Sky Survey (SDSS) Early Data Release (EDR), 198 satisfy our redshift constraints and 58 show clear evidence of multiple-trough (MT) structure in the CIV line. A composite spectrum constructed from this MT sample already shows evidence for a ghost feature. Narrowing our classification scheme further, we define a set of 36 objects that individually show evidence of a ghost feature, and then apply further cuts to arrive at a final `best sample' that contains our seven strongest ghost candidates. A further five objects show evidence for a ghost feature that is almost strong enough to merit inclusion in our best sample. Despite its limited size, our best sample more than doubles the number of known BAL QSOs with clear ghost signatures and should make an excellent basis for detailed follow-up studies.
description: 11 pages, 7 figures, accepted for publication in MNRAS
Validity of compressibility equation and Kirkwood-Buff theory in crystalline matter
Creators: name: Krüger, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Volume integrals over the radial pair-distribution function, so-called Kirkwood-Buff integrals (KBI) play a central role in the theory of solutions, by linking structural with thermodynamic information. The simplest example is the compressibility equation, a fundamental relation in statistical mechanics of fluids. Until now, KBI theory could not be applied to crystals, because the integrals strongly diverge when computed in the standard way. We solve the divergence problem and generalize KBI theory to crystalline matter by using the recently proposed finite-volume theory. For crystals with harmonic interaction, we derive an analytic expression for the peak shape of the pair-distribution function at finite temperature. From this we demonstrate that the compressibility equation holds exactly in harmonic crystals.
description: 5 pages, 4 figures. Accepted in Phys. Rev. E (Letter) on 10 May 2021. https://journals.aps.org/pre/accepted/5c07aY10N5a15971027002e9cbb161c323fec3129
Versatile two-dimensional potentials for ultra-cold atoms
Creators: name: Schnelle, S. K.
name: van Ooijen, E. D.
name: Davis, M. J.
name: Heckenberg, N. R.
name: Rubinsztein-Dunlop, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We propose and investigate a technique for generating smooth two-dimensional potentials for ultra-cold atoms based on the rapid scanning of a far-detuned laser beam using a two-dimensional acousto-optical modulator (AOM). We demonstrate the implementation of a feed-forward mechanism for fast and accurate control of the spatial intensity of the laser beam, resulting in improved homogeneity for the atom trap. This technique could be used to generate a smooth toroidal trap that would be useful for static and dynamic experiments on superfluidity and persistent currents with ultra-cold atoms.
description: 8 pages, 5 figures
Electrically charged localized structures
Creators: name: Bazeia, D.
name: Marques, M. A.
name: Menezes, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: This work deals with an Abelian gauge field in the presence of an electric charge immersed in a medium controlled by neutral scalar fields, which interact with the gauge field through a generalized dielectric function. We develop an interesting procedure to solve the equations of motion, which is based on the minimization of the energy, leading us to a first order framework where minimum energy solutions of first order differential equations solve the equations of motion. We investigate two distinct models in two and three spatial dimensions and illustrate the general results with some examples of current interest, implementing a simple way to solve the problem with analytical solutions that engender internal structure.
description: 11 pages, 9 figures; v2, misprints corrected and two references added
Shell Model Monte Carlo method in the $pn$-formalism and applications to the Zr and Mo isotopes
Creators: name: Ozen, C.
name: Dean, D. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report on the development of a new shell-model Monte Carlo algorithm which uses the proton-neutron formalism. Shell model Monte Carlo methods, within the isospin formulation, have been successfully used in large-scale shell-model calculations. Motivation for this work is to extend the feasibility of these methods to shell-model studies involving non-identical proton and neutron valence spaces. We show the viability of the new approach with some test results. Finally, we use a realistic nucleon-nucleon interaction in the model space described by (1p_1/2,0g_9/2) proton and (1d_5/2,2s_1/2,1d_3/2,0g_7/2,0h_11/2) neutron orbitals above the Sr-88 core to calculate ground-state energies, binding energies, B(E2) strengths, and to study pairing properties of the even-even 90-104 Zr and 92-106 Mo isotope chains.
Systematics of Moduli Stabilisation in Calabi-Yau Flux Compactifications
Creators: name: Balasubramanian, Vijay
name: Berglund, Per
name: Conlon, Joseph P.
name: Quevedo, Fernando
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the large volume limit of the scalar potential in Calabi-Yau flux compactifications of type IIB string theory. Under general circumstances there exists a limit in which the potential approaches zero from below, with an associated non-supersymmetric AdS minimum at exponentially large volume. Both this and its de Sitter uplift are tachyon-free, thereby fixing all Kahler and complex structure moduli, which has been difficult to achieve in the KKLT scenario. Also, for the class of vacua described in this paper, the gravitino mass is independent of the flux discretuum, whereas the ratio of the string scale to the 4d Planck scale is hierarchically small but flux dependent. The inclusion of alpha' corrections plays a crucial role in the structure of the potential. We illustrate these ideas through explicit computations for a particular Calabi-Yau manifold.
description: 23 pages, LaTeX, 1 eps figure; v2: typos, references, minor rewordings
Absorption Systems In Radio-Selected QSO Surveys
Creators: name: Ellison, Sara L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Radio-selected samples of quasars with complete optical identifications offer an ideal dataset with which to investigate dust bias associated with intervening absorption systems. Here, we review our work on the Complete Optical and Radio Absorption Line System (CORALS) survey whose aim is to quantify this bias and assess the impact of dust on absorber statistics. First, we review previously published results on the number density and gas content of high column density absorbers over the redshift range 0.6 < z < 3.5. We then present the latest results from CORALS which focus on measuring the metal content of our unbiased absorber sample and an investigation of their optical--IR colours. Overall we find that although dust is unarguably present in absorption galaxies, the level appears to be low enough that the statistics of previous magnitude limited samples have not been severely affected and that the subsequent reddening of background QSOs is small.
description: Proceedings of IAUC199, Probing Galaxies through Quasar Absorption Lines, P. R. Williams, C. Shu, and B. Menard, eds
First detection of dust emission in a High-Velocity Cloud
Creators: name: Miville-Deschenes, M. -A.
name: Boulanger, F.
name: Reach, W. T.
name: Noreiga-Crespo, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: By comparing sensitive Spitzer Space Telescope (SST) infrared and Green Bank Telescope 21 cm observations, we are able to report the first detection of dust emission in Complex C, the largest High Velocity Cloud in the sky. Dust in the region of Complex C studied here has a colder temperature ($T=10.7^{+0.9}_{-0.8}$ K - 1$σ$) than the local interstellar medium ($T=17.5$ K), in accordance with its great distance from the Galactic plane. Based on the metallicity measurements and assuming diffuse Galactic interstellar medium dust properties and dust/metals ratio, this detection could imply gas column densities more than 5 times higher than observed in HI. We suggest that the dust emission detected here comes from small molecular clumps, spatially correlated with the HI but with a low surface filling factor. Our findings imply that the HVCs' mass would be much larger than inferred from HI observations and that most of the gas falling on the Milky Way would be in cold and dense clumps rather than in a diffuse phase.
description: Accepted for publication in the Astrophysical Journal Letter, 5 pages, 4 figures
Klappert, Bertold: Bekennende Kirche in ökumenischer Verantwortung
Creators: name: Röhr, Heinz
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 38 Nr. 4 (1989): Ökumenische Rundschau, Band 38, Heft 4
Thermodynamic quantum crtical behavior in the anisotropic Kondo necklace model
Creators: name: Reyes, D.
name: Continentino, M. A.
name: Wang, Han-Ting
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Ising-like anisotropy parameter $δ$ in the Kondo necklace model is analyzed using the bond-operator method at zero and finite temperatures for arbitrary $d$ dimensions. A decoupling scheme on the double time Green's functions is used to find the dispersion relation for the excitations of the system. At zero temperature and in the paramagnetic side of the phase diagram, we determine the spin gap exponent $νz\approx0.5$ in three dimensions and anisotropy between $0\leqδ\leq1$, a result consistent with the dynamic exponent $z=1$ for the Gaussian character of the bond-operator treatment. At low but finite temperatures, in the antiferromagnetic phase, the line of Neel transitions is calculated for $δ\ll1$ and $δ\approx1$. For $d>2$ it is only re-normalized by the anisotropy parameter and varies with the distance to the quantum critical point QCP $|g|$ as, $T_N \propto |g|^ψ$ where the shift exponent $ψ=1/(d-1)$. Nevertheless, in two dimensions, long range magnetic order occurs only at T=0 for any $δ$. In the paramagnetic phase, we find a power law temperature dependence on the specific heat at the \textit{quantum liquid trajectory} $J/t=(J/t)_{c}$, $T\to0$. It behaves as $C_{V}\propto T^{d}$ for $δ\leq 1$ and $δ\approx1$, in concordance with the scaling theory for $z=1$.
description: 12 pages and 3 figures
Optimization of VFA production in an atad reactor with respect to aeration rates and removal of phosphorus, incorporating a magnesium ammonium phosphate (map) crystallizer from the atad supernatant
Creators: name: Sharma, Abyartha
Publisher: name: University of British Columbia
Year: 2009

description: Previous researchers have demonstrated that a mixture of primary and secondary sludge provides increased production of VFA in ATAD. Experiments were carried out at the UBC pilot plant, in two phases, using a 35/65 mixture of primary/secondary sludge, to determine the optimum aeration rate with respect to production/generation of VFA, and to investigate the removal of phosphorus by forced formation of struvite in an upflow crystallizer. The source sludge for the research was obtained from an on-site modified UCT process, and mixed in the correct ratios prior to feeding on an hourly basis to the 125-L tanks. The tanks, were configured in parallel and operated as individual first stage reactors, one of which was the control tank. During the first stage, the control tank was maintained at a constant aeration rate of 50 ml/min (as suggested by EPA). The aeration rate in the test tank was varied from 0 ml/min (nitrogen was supplied) to 100 ml/min, at increments of 25 ml/min. Throughout the entire experimental period, temperatures were in the thermophilic range, between 47°C and 58°C inside the tanks; feed solids were maintained around 1.4% TSS, and ORP was consistent between -300 mV and -450 mV. There was higher production of VFA at lower aeration rates, the highest occurring when 25 ml/min air was supplied. Analysis of nutrients confirmed that there was a high release of stored phosphorus and an increase in ammonia nitrogen. The ratio of VFA: PO₄-P was the highest when 25 ml/min air was supplied.
Measurement of Single Electron Event Anisotropy in Au+Au Collisions at sqrt(s_NN) = 200 GeV
Creators: name: PHENIX Collaboration
name: Adler, S. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The transverse momentum dependence of the azimuthal anisotropy parameter v_2, the second harmonic of the azimuthal distribution, for electrons at mid-rapidity (|eta| < 0.35) has been measured with the PHENIX detector in Au+Au collisions at sqrt(s_NN) = 200 GeV. The measurement was made with respect to the reaction plane defined at high rapidities (|eta| = 3.1 -- 3.9). From the result we have measured the v_2 of electrons from heavy flavor decay after subtraction of the v_2 of electrons from other sources such as photon conversions and Dalitz decay from light neutral mesons. We observe a non-zero single electron v_2 with a 90% confidence level in the intermediate p_T region.
description: 330 authors, 11 pages text, RevTeX4, 9 figures, 1 tables. Submitted to Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
Spectroscopic study of $^{47}$Ca from the $β^-$ decay of $^{47}$K
Creators: name: Smith, J. K.
name: Garnsworthy, A. B.
name: Pore, J. L.
name: Andreoiu, C.
name: MacLean, A. D.
name: Chester, A.
name: Beadle, Z.
name: Ball, G. C.
name: Bender, P. C.
name: Bildstein, V.
name: Braid, R.
name: Varela, A. Diaz
name: Dunlop, R.
name: Evitts, L. J.
name: Garrett, P. E.
name: Hackman, G.
name: Ilyushkin, S. V.
name: Jigmeddorj, B.
name: Kuhn, K.
name: Laffoley, A. T.
name: Leach, K. G.
name: Miller, D.
name: Mills, W. J.
name: Moore, W.
name: Moukaddam, M.
name: Olaizola, B.
name: Peters, E. E.
name: Radich, A. J.
name: Rand, E. T.
name: Sarazin, F.
name: Svensson, C. E.
name: Williams, S. J.
name: Yates, S. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The $β^-$ decay of $^{47}$K to $^{47}$Ca is an appropriate mechanism for benchmarking interactions spanning the $sd$ and $pf$ shells, but current knowledge of the $β^-$-decay scheme is limited. We have performed a high-resolution, high-efficiency study of the $β^-$-decay of $^{47}$K with the GRIFFIN spectrometer at TRIUMF-ISAC. The study revealed 48 new transitions, a more precise value for the $^{47}$K half-life (17.38(3)~s), and new spin and parity assignments for eight excited states. Levels placed for the first time here raise the highest state observed in $β^-$ decay to within 568(3) keV of the $Q$-value and confirm the previously measured large $β^-$-decay branching ratios to the low-lying states. Previously unobserved $β^-$-feeding to 3/2$^+$ states between 4.5 and 6.1~MeV excitation energy was identified with a total $β^-$-feeding intensity of 1.29(2)\%. The sum of the $B(GT)$ values for these states indicates that the $1s_{1/2}$ proton hole strength near this excitation energy is comparable to the previously known $1s_{1/2}$ proton and neutron hole strengths near 2.6 MeV.
Kaluza-Klein Higher Derivative Induced Gravity
Creators: name: Kao, W. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The existence and stability analysis of an inflationary solution in a $D+4$-dimensional anisotropic induced gravity is presented in this paper. Nontrivial conditions in the field equations are shown to be compatible with a cosmological model in which the 4-dimension external space evolves inflationary, while, the D-dimension internal one is static. In particular, only two additional constraints on the coupling constants are derived from the abundant field equations and perturbation equations. In addition, a compact formula for the non-redundant 4+D dimensional Friedmann equation is also derived for convenience. Possible implications are also discussed in this paper.
description: 13 pages, typos/errors corrected, three additional appendices added