cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry
Creators: name: Kains, N.
name: Bramich, D. M.
name: Ferro, A. Arellano
name: Jaimes, R. Figuera
name: Jørgensen, U. G.
name: Giridhar, S.
name: Alsubai, K. A.
name: Andersen, J. M.
name: Bozza, V.
name: Browne, P.
name: Burgdorf, M.
name: Novati, S. Calchi
name: Damerdji, Y.
name: Diehl, C.
name: Dodds, P.
name: Dominik, M.
name: Elyiv, A.
name: Fang, X. -S.
name: Giannini, E.
name: Gu, S. -H.
name: Hardis, S.
name: Harpsøe, K.
name: Hinse, T. C.
name: Hornstrup, A.
name: Hundertmark, M.
name: Jessen-Hansen, J.
name: Juncher, D.
name: Kerins, E.
name: Kjeldsen, H.
name: Korhonen, H.
name: Liebig, C.
name: Lund, M. N.
name: Lundkvist, M.
name: Mancini, L.
name: Martin, R.
name: Mathiasen, M.
name: Penny, M. T.
name: Rabus, M.
name: Rahvar, S.
name: Ricci, D.
name: Sahu, K.
name: Scarpetta, G.
name: Skottfelt, J.
name: Snodgrass, C.
name: Southworth, J.
name: Surdej, J.
name: Tregloan-Reed, J.
name: Vilela, C.
name: Wertz, O.
name: Williams, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the analysis of 26 nights of V and I time-series observations from 2011 and 2012 of the globular cluster M 30 (NGC 7099). We used our data to search for variable stars in this cluster and refine the periods of known variables; we then used our variable star light curves to derive values for the cluster's parameters. We used difference image analysis to reduce our data to obtain high-precision light curves of variable stars. We then estimated the cluster parameters by performing a Fourier decomposition of the light curves of RR Lyrae stars for which a good period estimate was possible. We also derive an estimate for the age of the cluster by fitting theoretical isochrones to our colour-magnitude diagram (CMD). Out of 13 stars previously catalogued as variables, we find that only 4 are bona fide variables. We detect two new RR Lyrae variables, and confirm two additional RR Lyrae candidates from the literature. We also detect four other new variables, including an eclipsing blue straggler system, and an SX Phoenicis star. This amounts to a total number of confirmed variable stars in M 30 of 12. We perform Fourier decomposition of the light curves of the RR Lyrae stars to derive cluster parameters using empirical relations. We find a cluster metallicity [Fe/H]_ZW=-2.01 +- 0.04, or [Fe/H]_UVES=-2.11 +- 0.06, and a distance of 8.32 +- 0.20 kpc (using RR0 variables), 8.10 kpc (using one RR1 variable), and 8.35 +- 0.42 kpc (using our SX Phoenicis star detection in M 30). Fitting isochrones to the CMD, we estimate an age of 13.0 +- 1.0 Gyr for M 30.
description: 16 pages, 10 figures, 10 tables, A&A in press
Avoided quantum criticality and magnetoelastic coupling in BaFe$_{2-x}$Ni$_{x}$As$_{2}$
Creators: name: Lu, Xingye
name: Gretarsson, H.
name: Zhang, Rui
name: Liu, Xuerong
name: Luo, Huiqian
name: Tian, Wei
name: Laver, Mark
name: Yamani, Z.
name: Kim, Young-June
name: Nevidomskyy, A. H.
name: Si, Qimiao
name: Dai, Pengcheng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the structural and magnetic orders in electron-doped BaFe2-xNixAs2 by high-resolution synchrotron X-ray and neutron scatterings. Upon Ni-doping x, the nearly simultaneous tetragonal-to-orthorhombic structural T_s and antiferromagnetic (T_N) phase transitions in BaFe2As2 are gradually suppressed and separated, resulting in T_s>T_N with increasing x as was previously observed. However, the temperature separation between T_s and T_N decreases with increasing x for x> 0.065$, tending towards a quantum bi-critical point near optimal superconductivity at x=0.1. The zero-temperature transition is preempted by the formation of a secondary incommensurate magnetic phase in the region 0.088< x < 0.104, resulting in a finite value of T_N \approx T_c+10$ K above the superconducting dome around $x\approx 0.1$. Our results imply an avoided quantum critical point, which is expected to strongly influence the properties of both the normal and superconducting states.
description: 7 pages; 5 figures
Universal construction of decoders from encoding black boxes
Creators: name: Yoshida, Satoshi
name: Soeda, Akihito
name: Murao, Mio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Isometry operations encode the quantum information of the input system to a larger output system, while the corresponding decoding operation would be an inverse operation of the encoding isometry operation. Given an encoding operation as a black box from a $d$-dimensional system to a $D$-dimensional system, we propose a universal protocol for isometry inversion that constructs a decoder from multiple calls of the encoding operation. This is a probabilistic but exact protocol whose success probability is independent of $D$. For a qubit ($d=2$) encoded in $n$ qubits, our protocol achieves an exponential improvement over any tomography-based or unitary-embedding method, which cannot avoid $D$-dependence. We present a quantum operation that converts multiple parallel calls of any given isometry operation to random parallelized unitary operations, each of dimension $d$. Applied to our setup, it universally compresses the encoded quantum information to a $D$-independent space, while keeping the initial quantum information intact. This compressing operation is combined with a unitary inversion protocol to complete the isometry inversion. We also discover a fundamental difference between our isometry inversion protocol and the known unitary inversion protocols by analyzing isometry complex conjugation and isometry transposition. General protocols including indefinite causal order are searched using semidefinite programming for any improvement in the success probability over the parallel protocols. We find a sequential "success-or-draw" protocol of universal isometry inversion for $d = 2$ and $D = 3$, thus whose success probability exponentially improves over parallel protocols in the number of calls of the input isometry operation for the said case.
description: 50 pages, 12 figures. Accepted in Quantum. All codes are available at https://github.com/sy3104/isometry_inversion
Phase transition in a coevolving network of conformist and contrarian voters
Creators: name: Yi, Su Do
name: Baek, Seung Ki
name: Zhu, Chen-Ping
name: Kim, Beom Jun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In the coevolving voter model, each voter has one of two diametrically opposite opinions, and a voter encountering a neighbor with the opposite opinion may either adopt it or rewire the connection to another randomly chosen voter sharing the same opinion. As we smoothly change the relative frequency of rewiring compared to that of adoption, there occurs a phase transition between an active phase and a frozen phase. By performing extensive Monte Carlo calculations, we show that the phase transition is characterized by critical exponents β=0.54(1) and ν =1.5(1), which differ from the existing mean-field-type prediction. We furthermore extend the model by introducing a contrarian type that tries to have neighbors with the opposite opinion, and show that the critical behavior still belongs to the same universality class irrespective of such contrarians' fraction.
description: 11 pages, 5 figures
title: The clergy of the diocese of Canterbury in the seventeenth century
Creators: name: Reid, Thomas
Publisher: name: University of Kent
Year: 2023

description: The traditional historiography of the English clergy, in the seventeenth century, has been in three parts, corresponding to the periods before, during and after the mid-century upheavals, with the years immediately following the Restoration often being subsumed into the eighteenth century. By contrast, in this thesis, as many as possible of the Canterbury diocesan clergy, excluding those in the peculiars, across the whole of the seventeenth century, have been identified and their characteristics analysed and tabulated. The resulting prosopography divides the clergy into two groups; cathedral and parish clergy including curates. Thematic chapters allow comparisons between cathedral and parish clergy and between these different categories of clergy present in the diocese in the three major periods of the seventeenth century and in selected years of the century. The prevalence of pluralism, defined as all clerical offices held, rather than merely offices with cure, is examined and this data is combined with the value of benefices and cathedral emoluments to estimate annual incomes. The results confirm that high incomes were restricted to the cathedral elite and a very limited number of parish clergy and that there were many poor vicars and curates, but it is suggested that this method is more robust than attempting to estimate wealth or standards of living. A dramatic reduction of the number of clergy in the diocese after the Restoration is revealed and attributed to sequestrations, ejections, and the chaos of the civil wars and Interregnum causing falling university attendances and reduced charitable giving. The will of a nonconformist, Clement Barling, provides the basis for innovative illustrations of the connections between the clergy and between them and certain of the laity and finally, it is shown that the numbers of sequestrations and ejections were probably much greater than previously estimated.
Models for Mirror Symmetry Breaking via β-Sheet-Controlled Copolymerization: (i) Mass Balance and (ii) Probabilistic Treatment
Creators: name: Blanco, Celia
name: Hochberg, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Experimental mechanisms that yield the growth of homochiral copolymers over their heterochiral counterparts have been advocated by Lahav and co-workers. These chiral amplification mechanisms proceed through racemic β-sheet-controlled polymerization operative in both surface crystallites as well as in solution. We develop two complementary theoretical models for these template-induced desymmetrization processes leading to multicomponent homochiral copolymers. First, assuming reversible β-sheet formation, the equilibrium between the free monomer pool and the polymer strand within the template is assumed. This yields coupled nonlinear mass balance equations whose solutions are used to calculate enantiomeric excesses and average lengths of the homochiral chains formed. The second approach is a probabilistic treatment based on random polymerization. The occlusion probabilities depend on the polymerization activation energies for each monomer species and are proportional to the concentrations of the monomers in solution in the constant pool approximation. The monomer occlusion probabilities are represented geometrically in terms of unit simplexes from which conditions for maximizing or minimizing the likelihood for mirror symmetry breaking can be determined.
Ranunculus montanus Bernh.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: L. montanus Bernh. (L. macrorrhizus Wimmer, Orobus tuberosus L.) Cat. 82. Sicher nur im Simplongebiet (Distr. 3 und 3a). Angabe aus Distr. l: Martigny (Murith) bestätigungsbedürftig. 3a:Südseite des Simplon, vielfach,950bis etwa1700m,besonders in Föhren-und Lärchenwäldern: um Simplon-Dorf; Umgebung von Gabi; Gondoschlucht; Alpien; Presa (alles: Becherer).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Existence of solutions to gas expansion problem through a sharp corner for 2-D Euler equations with general equation of state
Creators: name: Barthwal, Rahul
name: Sekhar, T. Raja
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35A01, 35B45, 35L50, 35L65, 35M30

description: In this article, we study the gas expansion problem by turning a sharp corner into vacuum for the two-dimensional pseudo-steady compressible Euler equations with a convex equation of state. This problem can be considered as interaction of a centered simple wave with a planar rarefaction wave. In order to obtain the global existence of solution up to vacuum boundary of the corresponding two-dimensional Riemann problem, we consider several Goursat type boundary value problems for 2-D self-similar Euler equations and use the ideas of characteristic decomposition and bootstrap method. Further, we formulate two-dimensional modified shallow water equations newly and solve a dam-break type problem for them as an application of this work. Moreover, we also recover the results from the available literature for certain equation of states which provide a check that the results obtained in this article are actually correct.
title: Truss Bridge Rehabilitation Prioritization
Creators: name: Peiris, Abheetha
name: Harik, Issam E.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2019

description: Kentucky’s inventory of historic steel truss bridges is declining rapidly. There are more than 150 historic truss bridges in the Kentucky Transportation Cabinet’s (KYTC) bridge inventory. Most of these bridges require maintenance to avoid replacement. However, prioritizing the rehabilitation of these bridges based on their historic importance is challenging. While AASHTO’s Guidelines for Historic Bridge Rehabilitation and Replacement contain guidance on selecting bridges for preservation, currently there is no guidance on how to prioritize those historic bridges selected for rehabilitation. Building on a previous study that identified historic truss bridges in Kentucky meriting preservation, the Kentucky Transportation Center (KTC) developed a truss bridge database listing the historic, geometric and other key features of the bridges. 108 candidate bridges were selected as being historically significant for preservation. Fourteen of the bridges were replaced during the course of the study, leaving 94 bridges for evaluation. KTC developed a ranking system for rehabilitation prioritization. Two levels of prioritization were considered in this study. The first level, Historical Importance, is the primary and most important level of prioritization. A historical importance factor, HIF, was calculated for each bridge based on its uniqueness, year of construction, and other factors. Bridges were then sorted based on their HIF to identify the ones for rehabilitation prioritization. When a number of bridges have the same HIF, a second level of prioritization, P2F, which accounts for Bridge Condition and Rehabilitation Potential, is deployed. A bridge condition factor, BCF, and rehabilitation potential factor, RPF, are calculated for each bridge. Eight of the bridges were identified as being of significant historical importance, receiving an HIF greater than 100. Of the remaining bridges, 30 had an HIF between 10 and 100, and the rest (56 bridges) earned an HIF less than 10.
description: Copyright
© 2018 University of Kentucky, Kentucky Transportation Center
Information may not be used, reproduced, or republished without KTC’s written consent.
Correlates of current menthol cigarette and flavored other tobacco product use among U.S. young adults
Creators: name: Villanti, Andrea C.
name: Pearson, Jennifer L.
name: Richardson, Amanda
name: Williams, Valerie F.
name: Vallone, Donna M.
name: Rath, Jessica M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Flavored and menthol tobacco products are particularly appealing to young adults. However, little is known about factors associated with their use in this population.
Double Handled Brane Tilings
Creators: name: Cremonesi, Stefano
name: Hanany, Amihay
name: Seong, Rak-Kyeong
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We classify the first few brane tilings on a genus 2 Riemann surface and identify their toric Calabi-Yau moduli spaces. These brane tilings are extensions of tilings on the 2-torus, which represent one of the largest known classes of 4d N=1 superconformal field theories for D3-branes. The classification consists of 16 distinct genus 2 brane tilings with up to 8 quiver fields and 4 superpotential terms. The Higgs mechanism is used to relate the different theories.
description: 86 pages, 43 figures, 13 tables
A Prospective Examination of Clinician and Supervisor Turnover Within the Context of Implementation of Evidence-Based Practices in a Publicly-Funded Mental Health System
Creators: name: Walsh, Lucia M.
name: Powell, Byron
name: Wolk, Courtney Benjamin
name: Hurford, Matthew O.
name: Babbar, Shaili
name: Aarons, Gregory A.
name: Mandell, David S.
name: Adams, Danielle R.
name: Marcus, Steven
name: Evans, Arthur C.
name: Beidas, Rinad S.
name: Barg, Frances
name: Hadley, Trevor
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Staff turnover rates in publicly-funded mental health settings are high. We investigated staff and organizational predictors of turnover in a sample of individuals working in an urban public mental health system that has engaged in a system-level effort to implement evidence-based practices. Additionally, we interviewed staff to understand reasons for turnover. Greater staff burnout predicted increased turnover, more openness toward new practices predicted retention, and more professional recognition predicted increased turnover. Staff reported leaving their organizations because of personal, organizational, and financial reasons; just over half of staff that left their organization stayed in the public mental health sector. Implications include an imperative to focus on turnover, with a particular emphasis on ameliorating staff burnout.
Toward a real synthesis of quantum and relativity theories: experimental evidence for absolute simultaneity
Creators: name: Emelyanov, S. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We have demonstrated spatially-discontinuous jumps of electrons at a distance as long as about 1cm. The effect occurs in a modified integer quantum Hall system consisted of a great number of extended Laughlin-Halperin-type states. Our observations directly contradict the no-aether Einstein's interpretation of special relativity together with the Minkowski's model of spacetime. However they are consistent with the aether-related Lorentz-Poincare's interpretation that allows absolute simultaneity. We thus strongly challenge the fundamental status of Lorentz invariance and hence break the basic argument against de Broglie-Bohm realistic quantum theory. We argue that both de Broglie-Bohm and Lorentz-Poincare theories are capable of providing a real synthesis of quantum and relativity theories. The synthesis is of such kind that quantum theory appears the most fundamental physical theory for which relativity is only a limiting case. In accordance with this hierarchy, quantum theory naturally resolves the problem of aether in Lorentz-Poincare's relativity. The aether could be a deeper Bohm-type undivided quantum pre-space, the relevance of which directly follows from our observations.
description: 6th International Workshop DICE2012 (Space-Time-Matter), September 17-21, 2012 (Castiglioncello, Italy)
See you soon again, chatbot? A design taxonomy to characterize user-chatbot relationships with different time horizons
Creators: name: Nißen, Marcia
name: Selimi, Driton
name: Janssen, Antje
name: Cardona, Davinia Rodríguez
name: Breitner, Michael H.
name: Kowatsch, Tobias
name: Von Wangenheim, Florian
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2021
Subjects: subject: Archetypes
subject: Chatbots
subject: Conversational agents
subject: Taxonomy
subject: Temporal profile
subject: Time-dependent design
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik
subject: Dewey Decimal Classification::100 | Philosophie::150 | Psychologie
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Users interact with chatbots for various purposes and motivations – and for different periods of time. However, since chatbots are considered social actors and given that time is an essential component of social interactions, the question arises as to how chatbots need to be designed depending on whether they aim to help individuals achieve short-, medium- or long-term goals. Following a taxonomy development approach, we compile 22 empirically and conceptually grounded design dimensions contingent on chatbots’ temporal profiles. Based upon the classification and analysis of 120 chatbots therein, we abstract three time-dependent chatbot design archetypes: Ad-hoc Supporters, Temporary Assistants, and Persistent Companions. While the taxonomy serves as a blueprint for chatbot researchers and designers developing and evaluating chatbots in general, our archetypes also offer practitioners and academics alike a shared understanding and naming convention to study and design chatbots with different temporal profiles. © 2021 The Authors
Critical D-module reps for finite superconformal algebras and their superconformal mechanics
Creators: name: Toppan, Francesco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The simple finite Lie superalgebras D(2,1;α), G(3), D(4,1), D(2,2), A(3,1) and F(4) admit D-module representations, given by a set of differential operators of a single real variable t, at a critical value of the scaling dimension λ. These superalgebras are one-dimensional N-extended superconformal algebras with N=4 (D(2,1;α)), N=7 (G(3)) and N=8 (the remaining ones). The critical D-module reps induce invariant actions in the Lagrangian framework for superconformal mechanics in D target dimensions. The N=8 critical scalings λ=1/(D-4) are linked to the D-dimensional harmonic functions with D=1,2,3,5,6,7,8. This talk is based on J. Math. Phys. 53 (2012) 043513 (arXiv:1112.0995), J. Math. Phys. 53 (2012) 103518 (arXiv:1208.3612) and some extra material.
description: Talk given at XXIXth ICGTMP, Tianjin, August 2012; 6 pages
Estimation of failure probability in braced excavation using Bayesian networks with integrated model updating
Creators: name: He, Longxue
name: Liu, Yong
name: Bi, Sifeng
name: Wang, Li
name: Broggi, Matteo
name: Beer, Michael
Publisher: name: Amsterdam : Elsevier
Year: 2020
Subjects: subject: Bayesian networks
subject: Braced excavation
subject: Failure probability
subject: Sensitivity analysis
subject: Stochastic model updating
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: A probabilistic model is proposed that uses observation data to estimate failure probabilities during excavations. The model integrates a Bayesian network and distanced-based Bayesian model updating. In the network, the movement of a retaining wall is selected as the indicator of failure, and the observed ground surface settlement is used to update the soil parameters. The responses of wall deflection and ground surface settlement are accurately predicted using finite element analysis. An artificial neural network is employed to construct the response surface relationship using the aforementioned input factors. The proposed model effectively estimates the uncertainty of influential factors. A case study of a braced excavation is presented to demonstrate the feasibility of the proposed approach. The update results facilitate accurate estimates according to the target value, from which the corresponding probabilities of failure are obtained. The proposed model enables failure probabilities to be determined with real-time result updating. © 2020 Tongji University
Low Mach Number Modeling of Convection in Helium Shells on Sub-Chandrasekhar White Dwarfs. I. Methodology
Creators: name: Zingale, M.
name: Nonaka, A.
name: Almgren, A. S.
name: Bell, J. B.
name: Malone, C. M.
name: Orvedahl, R. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We assess the robustness of a low Mach number hydrodynamics algorithm for modeling helium shell convection on the surface of a white dwarf in the context of the sub-Chandrasekhar model for Type Ia supernovae. We use the low Mach number stellar hydrodynamics code, MAESTRO, to perform three-dimensional, spatially-adaptive simulations of convection leading up to the point of the ignition of a burning front. We show that the low Mach number hydrodynamics model provides a robust description of the system.
description: accepted to ApJ many figures degraded in quality to save space
Multidimensional modeling of coronal rain dynamics
Creators: name: Fang, X.
name: Xia, C.
name: Keppens, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: J.2
subject: 85-08

description: We present the first multidimensional, magnetohydrodynamic simulations which capture the initial formation and the long-term sustainment of the enigmatic coronal rain phenomenon. We demonstrate how thermal instability can induce a spectacular display of in-situ forming blob-like condensations which then start their intimate ballet on top of initially linear force-free arcades. Our magnetic arcades host chromospheric, transition region, and coronal plasma. Following coronal rain dynamics for over 80 minutes physical time, we collect enough statistics to quantify blob widths, lengths, velocity distributions, and other characteristics which directly match with modern observational knowledge. Our virtual coronal rain displays the deformation of blobs into $V$-shaped like features, interactions of blobs due to mostly pressure-mediated levitations, and gives the first views on blobs which evaporate in situ, or get siphoned over the apex of the background arcade. Our simulations pave the way for systematic surveys of coronal rain showers in true multidimensional settings, to connect parametrized heating prescriptions with rain statistics, ultimately allowing to quantify the coronal heating input.
description: 12 pages, 4 figures, accepted by ApJ Letters at 2013-05-14
Nationalismus des kleinen Raumes in Europa : Identitätsbildungen im Spannungsfeld zwischen Nation, Region und europäischer Integration ; mit Fallbeispielen aus dem Vereinigten Königreich und Italien
Creators: name: Hoppe, Marcus
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: nationalist parties
subject: national identities
subject: nationalism in Europe
subject: Nationalistische Parteien
subject: Nationale Identitäten
subject: Nationalismus in Europa
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::320 | Politik

description: [no abstract]
Selective covering properties of product spaces
Creators: name: Miller, Arnold W.
name: Tsaban, Boaz
name: Zdomskyy, Lyubomyr
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Topology (math.GN)
subject: Logic (math.LO)
subject: FOS: Mathematics

description: We study the preservation of selective covering properties, including classic ones introduced by Menger, Hurewicz, Rothberger, Gerlits and Nagy, and others, under products with some major families of concentrated sets of reals. Our methods include the projection method introduced by the authors in an earlier work, as well as several new methods. Some special consequences of our main results are (definitions provided in the paper): \be \item Every product of a concentrated space with a Hurewicz $\sone(\Ga,\Op)$ space satisfies $\sone(\Ga,\Op)$. On the other hand, assuming \CH{}, for each Sierpiński set $S$ there is a Luzin set $L$ such that $L\x S$ can be mapped onto the real line by a Borel function. \item Assuming Semifilter Trichotomy, every concentrated space is productively Menger and productively Rothberger. \item Every scale set is productively Hurewicz, productively Menger, productively Scheepers, and productively Gerlits--Nagy. \item Assuming $\fd=\aleph_1$, every productively Lindelöf space is productively Hurewicz, productively Menger, and productively Scheepers. \ee A notorious open problem asks whether the additivity of Rothberger's property may be strictly greater than $\add(\cN)$, the additivity of the ideal of Lebesgue-null sets of reals. We obtain a positive answer, modulo the consistency of Semifilter Trichotomy with $\add(\cN)
description: Submitted for publication
Additivity relations in quantum correlations
Creators: name: Yang, Seungho
name: Jeong, Hyunseok
name: Son, Wonmin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Does the sum of correlations in subsystems constitute the correlation in the total system? Such a concept can be expressed by an additivity relationship of correlations. From a strong subadditivity condition of von Neumann entropy, four different additivity relations in total correlation are derived and quantified. Based upon the classification of the additivity in total correlation, we identify the corresponding additive relationships in entanglement. It is also discussed that similar relationships are satisfied for quantum discord of pure states, but it is not always true for mixed states.
description: 8 pages, 5 figures
Abwanderung und Rückgewinnung von Gewerbekunden in der Versicherungswirtschaft
Creators: name: Janssen, Dörthe
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Customer switching
subject: customer recovery
subject: business-to-business segment
subject: Kundenabwanderung
subject: Kundenrückgewinnung
subject: Gewerbekunden
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::360 | Soziale Probleme, Sozialdienste, Versicherungen

description: [no abstract]
EpilNet: A Novel Approach to IoT based Epileptic Seizure Prediction and Diagnosis System using Artificial Intelligence
Creators: name: Gupta, Shivam
name: Ranga, Virender
name: Agrawal, Priyansh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Epilepsy is one of the most occurring neurological diseases. The main characteristic of this disease is a frequent seizure, which is an electrical imbalance in the brain. It is generally accompanied by shaking of body parts and even leads (fainting). In the past few years, many treatments have come up. These mainly involve the use of anti-seizure drugs for controlling seizures. But in 70% of cases, these drugs are not effective, and surgery is the only solution when the condition worsens. So patients need to take care of themselves while having a seizure and be safe. Wearable electroencephalogram (EEG) devices have come up with the development in medical science and technology. These devices help in the analysis of brain electrical activities. EEG helps in locating the affected cortical region. The most important is that it can predict any seizure in advance on-site. This has resulted in a sudden increase in demand for effective and efficient seizure prediction and diagnosis systems. A novel approach to epileptic seizure prediction and diagnosis system EpilNet is proposed in the present paper. It is a one-dimensional (1D) convolution neural network. EpilNet gives the testing accuracy of 79.13% for five classes, leading to a significant increase of about 6-7% compared to related works. The developed Web API helps in bringing EpilNet into practical use. Thus, it is an integrated system for both patients and doctors. The system will help patients prevent injury or accidents and increase the efficiency of the treatment process by doctors in the hospitals.
description: 12 Pages, 12 Figures, 2 Tables
On applications of Orlicz Spaces to Statistical Physics
Creators: name: Majewski, W. A.
name: Labuschagne, L. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: Primary 47N50, 46E30, Secondary 81R15, 46L51

description: We present a new rigorous approach based on Orlicz spaces for the description of the statistics of large regular statistical systems, both classical and quantum. This approach has the advantage that statistical mechanics is much better settled. In particular, a new kind of renormalization leading to states having a well defined entropy function is presented.
description: 20 pages
Mining, analyzing and exploiting community feedback on the web
Creators: name: Chelaru, Sergiu
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Community feedback
subject: comment ratings
subject: social features
subject: learning to rank
subject: sentiment analysis
subject: opinionated queries
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
The nascent coffee ring with arbitrary droplet contact set: an asymptotic analysis
Creators: name: Moore, Matthew R.
name: Vella, Dominic
name: Oliver, James M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider the effect of droplet geometry on the early-stages of coffee ring formation during the evaporation of a thin droplet with an arbitrary simple, smooth, pinned contact line. We perform a systematic matched asymptotic analysis of the small-capillary number, large-solutal Peclet number limit for two evaporative models: a kinetic model, in which the evaporative flux is constant across the droplet, and a diffusive model, in which the evaporative flux is singular at the contact line. For both evaporative models, solute is transported to the contact line by a capillary flow while, local to the contact line, solute diffusion counters advection. The resulting interplay leads to the formation of the nascent coffee ring. By exploiting a coordinate system embedded in the contact line, we solve explicitly the local leading-order problem, deriving a similarity profile (in the form of a gamma distribution) that describes the coffee ring profile in its early stages. Notably, the ring characteristics change due to the concomitant asymmetry in the shape of the droplet free surface, the evaporative flux (in the diffusive evaporative regime) and the mass flux into the contact line. We utilize the asymptotic model to determine the effects of geometry on the growth of the coffee ring for a droplet with an elliptical contact set. Our results offer mechanistic insight into the effect of contact-line curvature on the development of the coffee-ring from deposition up to jamming of the solute; moreover our model predicts when finite concentration effects become relevant.
Modeling the interactions between host dynamics and epidemics of foliar diseases in three plant pathosystems
Creators: name: Chelal, John Koech
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Defoliation
subject: biotrophic
subject: necrotrophic
subject: senescence
subject: Solanum lycopersicum
subject: Phaseolus vulgaris
subject: Entlaubung
subject: biotroph
subject: necrotroph
subject: Seneszenz
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
Fat-tailed distribution derived from first eigenvector of symmetric random sparse matrix
Creators: name: Takahashi, Hisanao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Many solutions for scientific problems rely on finding the first (largest) eigenvalue and eigenvector of a particular matrix. We explore the distribution of the first eigenvector of a symmetric random sparse matrix. To analyze the properties of the first eigenvalue/vector, we employ a methodology based on the cavity method, a well-established technique in the statistical physics. A symmetric random sparse matrix in this paper can be regarded as an adjacency matrix for a network. We show that if a network is constructed by nodes that have two different types of degrees then the distribution of its eigenvector has fat tails such as the stable distribution ($α< 2 $) under a certain condition; whereas if a network is constructed with nodes that have only one type of degree, the distribution of its first eigenvector becomes the Gaussian approximately. The cavity method is used to clarify these results.
description: 29 pages, 18 figures, 1 table, full paper
Crocus vernus
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: L. vernus (L.) Bernh. (O. vernus L.) Cat. 82. l: Epinassey (Mariétan); L'Epegnaz (Oberson); Miéville (Coquoz); Gegend von Salvan (Coquoz, Oberson); Outre-Rhône (Coquoz). - 3: Nendaz (Loye); Pra Milon-Nax (Pannatier); Evolène (idem).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Gamma-rays from millisecond pulsar population within the central stellar cluster in the Galactic Center
Creators: name: Bednarek, W.
name: Sobczak, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It was proposed that the central dense stellar cluster in the Galactic Center, containing the mass of $\sim$4 times larger than that of the central black hole, had been formed as a result of a merging of several massive globular clusters. These globular clusters are expected to provide a large number of millisecond pulsars (MSPs) within the central parsec of the Galactic Center. We propose that the GeV $γ$-ray emission observed from the Galactic Center is in fact a cumulative effect of the emission from several globular clusters captured by the Galactic Center black hole. Moreover, the millisecond pulsars in globular clusters accelerate leptons in their wind zones to energies of the order of a few tens of TeV injecting them into the dense infrared and optical radiation region present within the central parsec. We calculate the expected TeV $γ$-ray emission produced by these leptons by the Inverse Compton Scattering process in the soft radiation field. It is shown that this emission can be responsible for the multi-TeV $γ$-rays observed by the Cherenkov telescopes from the Galactic Center for reasonable densities of the soft radiation, diffusion models for the propagation of leptons, their injection parameters (fluxes and spectral proprieties). If the energy conversion efficiency from the pulsars to the relativistic leptons is of the order of 10%, then about a thousand of MSPs have to be present in the central cluster in the Galactic Center.
description: 12 pages, 2 figures, accepted to MNRAS Letters
Entanglement between nitrogen vacancy spins in diamond controlled by a nanomechanical resonator
Creators: name: Chotorlishvili, L.
name: Sander, D.
name: Sukhov, A.
name: Dugaev, V.
name: Vieira, V. R.
name: Komnik, A.
name: Berakdar, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We suggest a new type of nano-electromechanical resonator, the functionality of which is based on a magnetic field induced deflection of an appropriate cantilever that oscillates between nitrogen vacancy (NV) spins in daimond. Specifically, we consider a Si(100) cantilever coated with a thin magnetic Ni film. Magnetoelastic stress and magnetic-field induced torque are utilized to induce a controlled cantilever deflection. It is shown that, depending on the value of the system parameters, the induced asymmetry of the cantilever deflection substantially modifies the characteristics of the system. In particular, the coupling strength between the NV spins and the degree of entanglement can be controlled through magnetoelastic stress and magnetic-field induced torque effects. Our theoretical proposal can be implemented experimentally with the potential of increasing several times the coupling strength between the NV spins as compared to the maximal coupling strength reported before in P. Rabl, et al. Phys. Rev. B 79, 041302(R) (2009).
description: 8 pages
Weather on Other Worlds I: Detection of Periodic Variability in the L3 Dwarf DENIS-P J1058.7-1548 with Precise Multi-Wavelength Photometry
Creators: name: Heinze, Aren N.
name: Metchev, Stanimir
name: Apai, Daniel
name: Flateau, Davin
name: Kurtev, Radostin
name: Marley, Mark
name: Radigan, Jacqueline
name: Burgasser, Adam J.
name: Artigau, Étienne
name: Plavchan, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Photometric monitoring from warm Spitzer reveals that the L3 dwarf DENIS-P J1058.7-1548 varies sinusoidally in brightness with a period of 4.25 +0.26/-0.16 hours and an amplitude of 0.388 +/- 0.043% (peak-to-valley) in the 3.6 micron band, confirming the reality of a 4.31 +/- 0.31 hour periodicity detected in J-band photometry from the SOAR telescope. The J-band variations are a factor of 2.17 +/- 0.35 larger in amplitude than those at 3.6 microns, while 4.5 micron Spitzer observations yield a 4.5 micron/3.6 micron amplitude ratio of only 0.23 +/- 0.15, consistent with zero 4.5 micron variability. This wide range in amplitudes indicates rotationally modulated variability due to magnetic phenomena and/or inhomogeneous cloud cover. Weak H-alpha emission indicates some magnetic activity, but it is difficult to explain the observed amplitudes by magnetic phenomena unless they are combined with cloud inhomogeneities (which might have a magnetic cause). However, inhomogenous cloudcover alone can explain all our observations, and our data align with theory in requiring that the regions with the thickest clouds also have the lowest effective temperature. Combined with published v sin(i) results, our rotation period yields a 95% confidence lower limit of 0.111 solar radii on the radius of DENIS-P J1058.7-1548, suggesting upper limits of 320 Myr and 0.055 solar masses on the age and mass. These limits should be regarded cautiously because of 3-sigma inconsistencies with other data; however, a lower limit of 45 degrees on the inclination is more secure. DENIS-P J1058.7-1548 is only the first of nearly two dozen low-amplitude variables discovered and analyzed by the Weather on Other Worlds project.
description: 48 pages, 15 figures, accepted to ApJ
Semilocal and Hybrid Density Embedding Calculations of Ground-State Charge-Transfer Complexes
Creators: name: Laricchia, S.
name: Fabiano, E.
name: Della Sala, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We apply the frozen density embedding method, using a full relaxation of embedded densities through a freeze-and-thaw procedure, to study the electronic structure of several benchmark ground-state charge-transfer complexes, in order to assess the merits and limitations of the approach for this class of systems. The calculations are performed using both semilocal and hybrid exchange-correlation (XC) functionals. The results show that embedding calculations using semilocal XC functionals yield rather large deviations with respect to the corresponding supermolecular calculations. Due to a large error cancellation effect, however, they can often provide a relatively good description of the electronic structure of charge-transfer complexes, in contrast to supermolecular calculations performed at the same level of theory. On the contrary, when hybrid XC functionals are employed, both embedding and supermolecular calculations agree very well with each other and with the reference benchmark results. In conclusion, for the study of ground-state charge-transfer complexes via embedding calculations hybrid XC functionals are the method of choice due to their higher reliability and superior performance.
description: 14 pages, 7 figures
Fast and Slow Stages of Lifetime Degradation by Boron–Oxygen Centers in Crystalline Silicon
Creators: name: Schmidt, Jan
name: Bothe, Karsten
name: Voronkov, Vladimir V.
name: Falster, Robert
Publisher: name: Weinheim : Wiley-VCH Verlag
Year: 2019
Subjects: subject: defects
subject: lifetime
subject: light-induced degradation (LID)
subject: recombination
subject: silicon
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: A conflict between previous and recently published data on the two-stage light-induced degradation (LID) of carrier lifetime in boron-doped oxygen-containing crystalline silicon is addressed. The previous experiments showed the activation of two boron–oxygen recombination centers with strongly differing recombination properties for the fast and slow stages of LID, whereas more recent studies found only a single center for both stages. To resolve this controversy, the historic silicon samples of these previous examinations are re-examined in this study after more than one decade. It is found that, in the historic samples, the fast stage can be either described by two different centers or a mixture of the two, depending on the duration of previous dark annealing. A possible solution is suggested based on the involvement of different activating impurities in the boron–oxygen defect. In dark-annealed samples, the defect consisting of boron, oxygen, and the activation impurity is present in two latent configurations, which reconfigure during LID at a fast and a slow stage. In the examined historic silicon samples, which did not undergo a gettering pretreatment, a significant concentration of an additional boron–oxygen defect with a different kind of activating impurity attached exists. The historic and modern results are thus reconciled.