cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Schrumpfende Gletscher, wachsende Risiken? Geopolitische Rivalitäten zwischen Indien und China
title: Shrinking glaciers, increasing risks? Geopolitical rivalries between India and China
Creators: name: Puhl, David
name: Steffens, Alexandra
Publisher: name: Zentrum Geoinformationswesen der Bundeswehr
Year: 2023

description: Die Rivalität zwischen den Nuklearmächten Indien und China gehört zu den größten Bedrohungen für den Frieden in Asien und wird deshalb als "einer der gefährlichsten Konflikte der Welt" bezeichnet. Besonders der seit Jahrzehnten schwelende Kaschmirkonflikt zwischen Indien und Pakistan erfährt durch Chinas Aufstieg im Indopazifik, die strategische Partnerschaft Chinas mit Pakistan und klimatische Veränderungen im Zusammenhang mit dem Klimawandel, eine neue Dynamik und geopolitische Bedeutung, weshalb dieser Grenzregion besondere Aufmerksamkeit gewidmet wird. Zugleich plant China im äußersten Nordosten des Himalayas einen neuen Riesenstaudamm am Fluss Brahmaputra, rasant schmelzendes Gletscherwasser zur Energiegewinnung nutzen zu können, und bedroht in der Wahrnehmung Indiens damit die Wasserversorgung auf dem Subkontinent. Diese Geopolitische Information beleuchtet die Rivalität zwischen Indien und China näher und geht der Frage nach, ob aus dieser Konkurrenz - im Zuge des Klimawandels und aktueller geopolitischer Entwicklungen - ein Sicherheitsrisiko für die internationale Gemeinschaft entstehen könnte.
description: The rivalry between the nuclear powers of India and China is counted among the biggest threats to peace in Asia and is thus named “one of the most dangerous conflicts worldwide”. Especially the Kashmir conflict between India and Pakistan that has been unresolved for decades gains a new dynamic and geopolitical importance due to the rise of China within the Indo-Pacific region, its strategic partnership with Pakistan and the climatic shifts due to climate change, which is why this border region receives special attention. At the same time, China is planning a new gigantic dam at the Brahmaputra river in the very north-east of the Himalayas in order to use the waters of rapidly melting glaciers for the generation of energy which India perceives as a threat to the water supply of the subcontinent. This Geopolitical Information takes a closer look at the rivalry between India and China and looks into the question whether this competition may turn into a security risk for the international community within the course of climate change and current geopolitical developments.
description: Geoinformationsdienst der Bundeswehr / Geopolitische Information; 2022/2
Alignment and measurement of the magnetic field for the BESIII muon counter
Creators: name: Gao, Qing
name: Zhang, Jingzhi
name: Li, Chunhua
name: Yin, Junhao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Based on cosmic ray events without a magnetic field taken with the BESIII detector during the summer shutdown of BEPCII in 2012 and di-muon events from a data sample taken at center-of-mass energy of 3.686 GeV in 2009, we compare the coordinates of hits registered in the BESIII muon counter with the expected interaction point extrapolated from reconstructed tracks from the inner tracking system in the absence of a magnetic field. By minimizing the difference, we align the muon counter with the inner tracking system. Moreover, the strength of the magnetic field in the muon counter is measured for the first time with di-muon events from data taken at a center-of-mass energy of 3.686~GeV. After the alignment and the magnetic field strength measurement, the offsets in the reconstructed hit positions for muon tracks are reduced, which improves the muon identification. The alignment and magnetic field strength measurement have been adopted in the latest version of the BESIII offline software system. This addition to the software reduces the systematic uncertainty for the physics analysis in cases where the muon counter information is used.
description: 5 pages, 5 figures, 1 table
Randomized query complexity of sabotaged and composed functions
Creators: name: Ben-David, Shalev
name: Kothari, Robin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Complexity (cs.CC)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We study the composition question for bounded-error randomized query complexity: Is R(f o g) = Omega(R(f) R(g)) for all Boolean functions f and g? We show that inserting a simple Boolean function h, whose query complexity is only Theta(log R(g)), in between f and g allows us to prove R(f o h o g) = Omega(R(f) R(h) R(g)). We prove this using a new lower bound measure for randomized query complexity we call randomized sabotage complexity, RS(f). Randomized sabotage complexity has several desirable properties, such as a perfect composition theorem, RS(f o g) >= RS(f) RS(g), and a composition theorem with randomized query complexity, R(f o g) = Omega(R(f) RS(g)). It is also a quadratically tight lower bound for total functions and can be quadratically superior to the partition bound, the best known general lower bound for randomized query complexity. Using this technique we also show implications for lifting theorems in communication complexity. We show that a general lifting theorem for zero-error randomized protocols implies a general lifting theorem for bounded-error protocols.
description: v1: 22 pages; v2: 23 pages, minor changes
Spiral orbits and oscillations in historical evolution of empires
Creators: name: Cheon, Taksu
name: Poghosyan, Sergey S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce the concept of metaasabiya, the second non-material resource, to the asabiya theory of historical dynamics. We find that the resulting three variable dynamical system has peculiar features such as repelling or attracting axes and spiralling orbits in the phase space. Depending on the initial state, the system can go through series of oscillatory rises and falls, mimicking the geopolitical evolution of real-world polities. These distinctive features, absent in conventional Lotka-Volterra type biological systems, reveal the hidden richness inherent in the asabiya theory.
description: LaTeX 14 pages, 9 sets of figures. Revised version. See http://researchmap.jp/jorf7q88x-13620/#_13620 for less technical presentation (in Japanese)
Constraint Based World Modeling
Creators: name: Göhring, Daniel
name: Mellmann, Heinrich
name: Gerasymova, Kataryna
name: Burkhard, Hans-Dieter
Publisher: name: Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II
Year: 2008
Subjects: subject: Robot Navigation
subject: Constraints
subject: 004 Informatik

description: Common approaches for robot navigation use Bayesian ﬁlters like particle ﬁlters, Kalman ﬁlters and their extended forms. We present an alternative and supplementing approach using con- straint techniques based on spatial constraints between object positions. This yields several advan- tages. The robot can choose from a variety of belief functions, and the computational complexity is decreased by efﬁcient algorithms. The paper investigates constraint propagation techniques under the special requirements of navigation tasks. Sensor data are noisy, but a lot of redundancies can be exploited to improve the quality of the result. We introduce two quality measures: The ambiguity measure for constraint sets deﬁnes the precision, while inconsistencies are measured by the incon- sistency measure. The measures can be used for evaluating the available data and for computing best ﬁtting hypothesis. A constraint propagation algorithm is presented.
The case for 100 GeV bino dark matter: A dedicated LHC tri-lepton search
Creators: name: van Beekveld, Melissa
name: Beenakker, Wim
name: Caron, Sascha
name: de Austri, Roberto Ruiz
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Global fit studies performed in the pMSSM and the photon excess signal originating from the Galactic Center seem to suggest compressed electroweak supersymmetric spectra with a $\sim$100 GeV bino-like dark matter particle. We find that these scenarios are not probed by traditional electroweak supersymmetry searches at the LHC. We propose to extend the ATLAS and CMS electroweak supersymmetry searches with an improved strategy for bino-like dark matter, focusing on chargino plus next-to-lightest neutralino production, with a subsequent decay into a tri-lepton final state. We explore the sensitivity for pMSSM scenarios with $Δm = m_{\rm NLSP} - m_{\rm LSP} \sim (5 - 50)$ GeV in the $\sqrt{s} = 14$ TeV run of the LHC. Counterintuitively, we find that the requirement of low missing transverse energy increases the sensitivity compared to the current ATLAS and CMS searches. With 300 fb$^{-1}$ of data we expect the LHC experiments to be able to discover these supersymmetric spectra with mass gaps down to $Δm \sim 9$ GeV for DM masses between 40 and 140 GeV. We stress the importance of a dedicated search strategy that targets precisely these favored pMSSM spectra.
description: Published in JHEP
title: Vers l’utilisation de plantes de service pour contribuer à la santé des cultures horticoles. Acquis opérationnels issus d’expérimentation en conditions de production. Expérimentation issue du projet Ecopêche 2 - INRAE Unité PSH Avignon
Creators: name: Courteille, Adriana
name: Borg, Julie
name: Chave, Marie
name: Lefèvre, Amélie
Publisher: name: INRAE
Year: 2022

description: Il s'agit de l'une des fiches produites pour valoriser les acquis opérationnels produits lors de l’expérimentation agronomique en conditions proches de la production. Cet ensemble de fiches porte sur l’utilisation de plantes de service pour la gestion de la santé des cultures en productions horticoles en milieu tempéré et tropical.
The boundary of the chronology violating set
Creators: name: Minguzzi, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A sufficiently general definition for the future and past boundaries of the chronology violating region is given. In comparison to previous studies, this work does not assume that the complement of the chronology violating set is globally hyperbolic. The boundary of the chronology violating set is studied and several propositions are obtained which confirm the reasonability of the definition. Some singularity theorems related to chronology violation are considered. Among the other results we prove that compactly generated horizons are compactly constructed.
description: Latex2e, 22 pages, 3 figures. v2: added proof that compactly generated horizons are compactly constructed
title: Experience Report of Potential Free Temperature Measurement with commercially available Pyrometers in gas insulated systems
Creators: name: Hallas, Martin
name: Moxter, Julian
name: Hinrichsen, Volker
name: Juhre, Karsten
name: Tenzer, Michael
Publisher: name: VDE Verlag
Year: 2024

description: A potential free temperature measurement in gas insulated switchgear and lines (GIS/GIL) was investigated within an HVDC research project, because the temperature is of high importance during development and operation of HVDC equipment. Infrared spectrum measurement of the heated inner conductor by pyrometer sensors has emerged as the best technical solution for HVDC GIS/GIL. To optimize the infrared emission of the inner conductor, it was painted with black varnish. The sensor had to be adjusted to the infrared transmission of the pressurized insulating gas atmosphere. Experiences as well as methods to perform such a calibration are shown in the paper. A calibration by adjusting transmission and emission coefficients inside the sensor software did not succeeded, because the coefficients differed for variable sensor ambient temperatures. A successful calibration was possible by considering two major variables: the pyrometer output as well as the sensor ambient temperature. However, certain limits of the pyrometer measurement in GIS/GIL were observed as well. The EMC performance of the pyrometer was improved by an additional electronic unit, which protects the commercial electronics. Overall, the potential free temperature measurement could be performed during the long-term operation of the regarded HVDC GIL system. Typical temperature curves based on the calibrated pyrometer sensor are shown.
Re-imagining healthcare: Wearable smart technologies, the role of medicinal commons and the hyperlocalisation of healthcare datasets
Creators: name: Carberry, Alexander
Publisher: name: figshare
Year: 2022
Subjects: subject: 111706 Epidemiology
subject: FOS: Health sciences
subject: Health Care
subject: 111711 Health Information Systems (incl. Surveillance)
subject: 111708 Health and Community Services

description: This paper is a proposal for the rewinding of healthcare research, with respect to community health.
Two No-Go Theorems on Superconductivity
Creators: name: Tada, Yasuhiro
name: Koma, Tohru
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study lattice superconductors such as attractive Hubbard models. As is well known, Bloch's theorem asserts absence of persistent current in ground states and equilibrium states for general fermion systems. While the statement of the theorem is true, we can show that the theorem cannot exclude possibility of a surface persistent current. Such a current can be stabilized by boundary magnetic fields which do not penetrate into the bulk region of a superconductor, provided emergence of massive photons, i.e., Meissner effect. Therefore, we can expect that a surface persistent current is realized for a ground/equilibrium state in the sense of stability against local perturbations. We also apply Elitzur's theorem to superconductors at finite temperatures. As a result, we prove absence of symmetry breaking of the global $U(1)$ phase of electrons for almost all gauge fields. These observations suggest that the nature of superconductivity is the emergence of massive photons rather than the symmetry breaking of the $U(1)$ phase of electrons.
description: 18 pages, v2: minor corrections
Bounce and cyclic cosmology in weakly broken galileon theories
Creators: name: Banerjee, Shreya
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the bounce and cyclicity realization in the framework of weakly broken galileon theories. We study bouncing and cyclic solutions at the background level, reconstructing the potential and the galileon functions that can give rise to a given scale factor, and presenting analytical expressions for the bounce requirements. We proceed to a detailed investigation of the perturbations, which after crossing the bouncing point give rise to various observables, such as the scalar and tensor spectral indices and the tensor-to-scalar ratio. Although the scenario at hand shares the disadvantage of all bouncing models, namely that it provides a large tensor-to-scalar ratio, introducing an additional light scalar significantly reduces it through the kinetic amplification of the isocurvature fluctuations.
description: 28 pages, 6 figures,version published in Phys. Rev. D
REPOPSI: Repository of Psychological Instruments in Serbian
Creators: name: Lazić, Aleksandra
Publisher: name: Zenodo
Year: 2022
Subjects: REPOPSI
open repository
open science
psychological instruments
open research materials
open science days

description: Invited presentation given at the Open Science Days IV, 3-4 November, 2022, Belgrade (Serbia). The full event programme is available at https://open.ac.rs/index.php/osd2022.
description: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 101017536 and is supported by the EOSC Future (https://eoscfuture.eu/) through the RDA (https://www.rd-alliance.org/) Open Call mechanism (https://eoscfuture-grants.eu/provider/research-data-alliance), based on evaluations of external, independent experts.
The Evolution of the Intergalactic Medium
Creators: name: McQuinn, Matthew
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The bulk of cosmic matter resides in a dilute reservoir that fills the space between galaxies, the intergalactic medium (IGM). The history of this reservoir is intimately tied to the cosmic histories of structure formation, star formation, and supermassive black hole accretion. Our models for the IGM at intermediate redshifts (2
description: 55 pages, 13 figures; published in the Annual Review of Astronomy and Astrophysics
Test of the Einstein equivalence principle with spectral distortions in the cosmic microwave background
Creators: name: Arai, Shun
name: Nitta, Daisuke
name: Tashiro, Hiroyuki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Einstein Equivalence Principle~(EEP) can be verified by the measurement of the spectral distortions of the Cosmic Microwave Background (CMB). The existence of energy-dependency in the cosmological redshift effect means the EEP violation. Introducing the energy-dependent Friedmann-Robertson-Walker metric motivated by rainbow gravity, we show that the energy-dependent redshift effect causes the CMB spectral distortions. Assuming the simple energy-dependent form of the metric, we evaluate the distortions. From the COBE/FIRAS bound, we find that the deviation degree from the EEP, which is comparable to the difference of the parameterized-post-Newtonian parameter "gamma" in energy, is less than 10^{-9} at the CMB energy scale.
description: 4 pages, 1 figure, title revised, references added, minor changes to match PRD published version
Active particles with soft and curved walls: Equation of state, ratchets, and instabilities
Creators: name: Nikola, Nikolai
name: Solon, Alexandre P.
name: Kafri, Yariv
name: Kardar, Mehran
name: Tailleur, Julien
name: Voituriez, Raphaël
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study, from first principles, the pressure exerted by an active fluid of spherical particles on general boundaries in two dimensions. We show that, despite the non-uniform pressure along curved walls, an equation of state is recovered upon a proper spatial averaging. This holds even in the presence of pairwise interactions between particles or when asymmetric walls induce ratchet currents, which are accompanied by spontaneous shear stresses on the walls. For flexible obstacles, the pressure inhomogeneities lead to a modulational instability as well as to the spontaneous motion of short semi-flexible filaments. Finally, we relate the force exerted on objects immersed in active baths to the particle flux they generate around them.
description: 6 pages, 5 figures and 8 pages of supplementary information
Moderate solutions of semilinear elliptic equations with Hardy potential under minimal restrictions on the potential
Creators: name: Marcus, Moshe
name: Moroz, Vitaly
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J60, 35J75, 31B35

description: We study semilinear elliptic equations with Hardy potential $\mathrm{(E)} \; -L_μu+u^q=0$ in a bounded smooth domain $Ω\subset \mathbb R^N$. Here $q>1$, $L_μ=Δ+\fracμ{δ_Ω^2}$ and $δ_Ω(x)=\mathrm{dist}(x,\partialΩ)$. Assuming that $0\leq μ
description: 23 pages
Entry and return times for semi-flows
Creators: name: Marklof, Jens
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 37A10, 60G55

description: Haydn, Lacroix and Vaienti [Ann. Probab. 33 (2005)] proved that, for a given ergodic map, the entry time distribution converges in the small target limit, if and only if the corresponding return time distribution converges. The present note explains how entry and return times can be interpreted in terms of stationary point processes and their Palm distribution. This permits a generalization of the results by Haydn et al. to non-ergodic maps and continuous-time dynamical systems.
description: 14 pages; to appear in Nonlinearity
Alternative publishing platforms: where do we stand in 2023?
Creators: name: Lutz, Jean-Francois
name: Sondervan, Jeroen
name: Mette Morthorst, Anna
Publisher: name: Zenodo
Year: 2023
Subjects: Scholarly Publishing, Open Access, Open Science, Scholarly Communication

description: Alternative publishing platforms represent a move away from the traditional journal as an organising principle and might differ from traditional scholarly journals in a number of ways, including publication process, governance, and underlying infrastructure. They can be regarded as examples of real innovative, open access scholarly communication or as effective "threat infrastructures" to traditional journals. In both these aspects, they relate quite well with the idea of reimagining open science for next generations and of disrupting scholarly publishing. These different platforms all have different aims, such as seeking to remove the barriers, constraints and costs imposed by legacy academic publishing companies, reduce questionable practices, or make research more deeply accessible and reusable. They also feature different ways of operation, different innovations, different business models and different structures of governance. Describing this diversity and knowing the directions in which these platforms are driving innovation, will allow insight into what can be a confusing landscape. Therefore, in 2022, a Knowledge Exchange task group started a project exploring what Alternative Publishing Platforms do and how they can be placed in the open scholarly communication ecosystem. In order to help guide conversations, we first published a Knowledge Exchange (KE) scoping paper. The next step has been to identify and better understand the individual platforms. Therefore a survey has been conducted to reach out to different platforms. The survey includes questions regarding, among others, governance and ownership, content selection, publication process, copyright and licensing. The entries will contribute to the proposed taxonomy of Alternative Publishing Platforms. In this presentation we present the first results of this taxonomy as well as a prototype to present this taxonomy in a way it can function as a practical guide for researchers, institutions, libraries and funders when assessing these platforms.
Hovering in Oscillatory Flows
Creators: name: Huang, Yangyang
name: Nitsche, Monika
name: Kanso, Eva
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the hovering dynamics of rigid bodies with up-down asymmetry placed in oscillating background flows. Recent experiments on inanimate pyramid-shaped objects in oscillating flows with zero mean component demonstrate that the resulting aerodynamic forces are sufficient to keep the object aloft. The mechanisms responsible for this lift production are fundamentally unsteady and depend on the shed vorticity. Here, we consider a model system of a two-dimensional flyer and compute the unsteady, two-way coupling between the flyer and the surrounding fluid in the context of the vortex sheet model. We examine in detail the flow properties (frequency and speed) required for hovering and their dependence on the flyer's characteristics (mass and geometry). We find that the aerodynamic effort required to hover is an intrinsic property of the flyer itself: a given flyer requires a constant amount of effort to hover, irrespective of the frequency and speed of the oscillating flow. This physical insight will potentially have significant implications on the design of unmanned air vehicles as well as on understanding active hovering of live organisms that can manipulate their flapping motion to favor a larger oscillation amplitude or frequency.
$α_s$ and $\rm V_{cs}$ determination, and CKM unitarity test, from W decays at NNLO
Creators: name: d'Enterria, David
name: Srebre, Matej
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The hadronic ($Γ^{\rm W}_{\rm had}$) and total ($Γ^{\rm W}_{\rm tot}$) widths of the W boson, computed at least at next-to-next-to-leading-order (NNLO) accuracy, are combined to derive a new precise prediction for the hadronic W branching ratio ${\cal B}^{\rm W}_{\rm had} \equiv Γ^{\rm W}_{\rm had}/Γ^{\rm W}_{\rm tot}$ = $0.682 \pm 0.011_{\rm par}$, using the experimental Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, or ${\cal B}^{\rm W}_{\rm had} = 0.6742 \pm 0.0002_{\rm th} \pm 0.0001_{\rm par}$ assuming CKM unitarity, with uncertainties dominated by the input parameters of the calculations. Comparing the theoretical predictions and experimental measurements for various W decay observables, the NNLO strong coupling constant at the Z pole, $α_s(m_Z) = 0.117 \pm 0.042_{\rm exp} \pm 0.004_{\rm th} \pm 0.001_{\rm par}$, as well as the charm-strange CKM element, $\rm V_{cs}$ = 0.973 $\pm$ 0.004$_{\rm exp}$ $\pm$ 0.002$_{\rm par}$, can be extracted under different assumptions. We also show that W decays provide today the most precise test of CKM unitarity for the 5 quarks lighter than $m_{\rm W}$, $\sum_{ u,c,d,s,b} |V_{ ij}|^2 = 1.999 \pm 0.008_{\rm exp} \pm 0.001_{\rm th}$. Perspectives for $α_s$ and $\rm V_{cs}$ extractions from W decays measurements at the LHC and future $e^+e^-$ colliders are presented.
description: 8 pages, 7 figures. Updated version with minor changes to match published version in Phys. Lett. B
Melospiza melodia subsp. niceae Dickerman
Creators: name: LeCroy, Mary
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Emberizidae
Melospiza

description: Melospiza melodia niceae Dickerman Melospiza melodia niceae Dickerman, 1963: 51 (Tulancingo, Hidalgo, México). Now Melospiza melodia niceae Dickerman, 1963. See Paynter, 1970: 52, Byers et al. 1995: 229– 233, Arcese et al. 2002: 6, and Dickinson, 2003: 782. HOLOTYPE: AMNH 817696, male, collected at Tulancingo, 20.06N, 98.20W (Times Atlas), Hidalgo, Mexico, on 22 September 1956, by Robert W. Dickerman (no. 7427). On exchange from MMNH (no. 16897) to AMNH in 1986. COMMENTS: In the original description, Dickerman cited his field number and the MMNH number of the holotype and examined 53 specimens of niceae. Of the 52 paratypes, four are in AMNH: 1 mi west of Tulancingo, AMNH 768846 (MMNH no. 16910), male, 29 April 1958, RWD no. 8716; Lago Zupitlan, AMNH 768847 (16913), imm. male, AMNH 768848 (16911), juvenile female, AMNH 768849 (16918), unsexed, all three collected on 22 September 1956, RWD nos. 7435, 7433, and 7448, respectively. See Dickerman (1963: 47, fig. 20) for a map showing the range of niceae. Arcese et al. (2002: 6) considered niceae a synonym of M. m. mexicana.
description: Published as part of LeCroy, Mary, 2012, Type Specimens Of Birds In The American Museum Of Natural History Part 10. Passeriformes: Emberizidae: Emberizinae, Catamblyrhynchinae, Cardinalinae, Thraupinae, And Tersininae, pp. 1-125 in Bulletin of the American Museum of Natural History 2012 (368) on page 12, DOI: 10.1206/775.1, http://zenodo.org/record/5399454
description: {"references": ["Dickerman, R. W. 1963. The Song Sparrows of the Mexican plateau. Minnesota Museum of Natural History, Occasional Papers 9: ix + 79 pp.", "Byers, C., J. Curson, and U. Olsson. 1995. Sparrows and buntings of North America and the world. Boston: Houghton Mifflin, 334 pp., 39 pls.", "Arcese, P., M. K. Sogge, A. B. Marr, and P. A. Patten. 2002. Song Sparrow (Melospiza melodia). In A. Poole and F. Gill (editors), The birds of North America. No. 704. Philadelphia: Birds of North America, Inc."]}
Algebraically special Einstein-Maxwell fields
Creators: name: Bergh, Norbert Van den
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Geroch-Held-Penrose formalism is used to re-analyse algebraically special non-null Einstein-Maxwell fields, aligned as well as non-aligned, in the presence of a possible non-vanishing cosmological constant. A new invariant characterisation is given of the Garcia-Plebanski and Plebanski-Hacyan metrics within the family of aligned solutions and of the Griffiths metrics within the family of the non-aligned solutions. As a corollary also the double alignment of the Debever-McLenaghan 'class D' metrics with non-vanishing cosmological constant is shown to be equivalent with the shear-free and geodesic behaviour of their Debever-Penrose vectors.
description: 11 pages, changed title, added two tree diagrams representing the results; minor corrections
A Model of the Matter-antimatter Asymmetry and Cold Dark Matter with $U(1)_{B-L}\otimes U(1)_{D}$
Creators: name: Yang, Wei-Min
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I suggest an effective model between the GUT and the electroweak scale. It only introduces the two symmetries of $U(1)_{B-L}$ and $U(1)_{D}$ besides the SM groups. The two symmetries are individually broken at the reheating temperature of the universe of $10^{12}$ GeV and the scale of $3\sim 4$ TeV. The model can simultaneously accommodate the tiny neutrino masses, the matter-antimatter asymmetry and the cold dark matter (CDM). In particular, the model gives some interesting results and predictions, for instance, the neutrinos are Dirac nature and their masses are related to the $U(1)_{D}$ breaking, the size of the matter-antimatter asymmetry is closely related to the mass hierarchy of the quarks and charged leptons, the CDM mass is probably in the range of $250\sim 350$ GeV. Finally, it is feasible to test the model in future collider experiments.
description: 14 pages, 4 figures, the paper makes many changes
Diphoton Resonance in F-theory inspired Flipped SO(10)
Creators: name: Leontaris, George K.
name: Shafi, Qaisar
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by the diphoton excess at 750 GeV reported by the ATLAS and CMS experiments, we present an F-theory inspired flipped $SO(10)$ model embedded in an $E_6$ GUT. The low energy spectrum includes the three MSSM chiral families, vectorlike color triplets, several pairs of charged $SU(2)_L$ singlet fields $(E^c, \bar E^c)$, as well as MSSM singlets, one or more of which can contribute to the resonance. Total decay width in the multi-GeV range can arise from couplings involving the singlet and MSSM fields
description: Revised version (to appear in EPJC)
The IRX-$β$ relation: Insights from simulations
Creators: name: Safarzadeh, Mohammadtaher
name: Hayward, Christopher C.
name: Ferguson, Henry C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the relationship between the UV continuum slope and infrared excess (IRX$\equiv L_{\rm IR}/L_{\rm FUV}$) predicted by performing dust radiative transfer on a suite of hydrodynamical simulations of galaxies. Our suite includes both isolated disk galaxies and mergers intended to be representative of galaxies at both $z \sim 0$ and $z \sim 2-3$. Our low-redshift isolated disks and mergers often populate a region around the the locally calibrated \citet[][M99]{M99} relation but move well above the relation during merger-induced starbursts. Our high-redshift simulated galaxies are blue and IR-luminous, which makes them lie above the M99 relation. The value of UV continuum slope strongly depends on the dust type used in the radiative transfer calculations: Milky Way-type dust leads to significantly more negative (bluer) slopes compared with Small Magellanic Cloud-type dust. The effect on $β$ due to variations in the dust composition with galaxy properties or redshift can dominate over other sources of $β$ variations and is the dominant model uncertainty. The dispersion in $β$ is anticorrelated with specific star formation rate and tends to be higher for the $z \sim 2-3$ simulations. In the actively star-forming $z \sim 2-3$ simulated galaxies, dust attenuation dominates the dispersion in $β$, whereas in the $z \sim 0$ simulations, the contributions of SFH variations and dust are similar. For low-SSFR systems at both redshifts, SFH variations dominate the dispersion. Finally, the simulated $z \sim 2-3$ isolated disks and mergers both occupy a region in the \irxbeta\ plane consistent with observed $z \sim 2-3$ dusty star-forming galaxies (DSFGs). Thus, contrary to some claims in the literature, the blue colors of high-z DSFGs do not imply that they are short-lived starbursts.
description: 20 pages+a 4-page appendix, Accepted for publication at ApJ
Expansion-maximization-compression algorithm with spherical harmonics for single particle imaging with X-ray lasers
Creators: name: Flamant, Julien
name: Bihan, Nicolas Le
name: Martin, Andrew V.
name: Manton, Jonathan H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: In 3D single particle imaging with X-ray free-electron lasers, particle orientation is not recorded during measurement but is instead recovered as a necessary step in the reconstruction of a 3D image from the diffraction data. Here we use harmonic analysis on the sphere to cleanly separate the angu- lar and radial degrees of freedom of this problem, providing new opportunities to efficiently use data and computational resources. We develop the Expansion-Maximization-Compression algorithm into a shell-by-shell approach and implement an angular bandwidth limit that can be gradually raised during the reconstruction. We study the minimum number of patterns and minimum rotation sampling required for a desired angular and radial resolution. These extensions provide new av- enues to improve computational efficiency and speed of convergence, which are critically important considering the very large datasets expected from experiment.
SaxiGUTs and their Predictions
Creators: name: Co, Raymond T.
name: D'Eramo, Francesco
name: Hall, Lawrence J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a class of unified supersymmetric axion theories with unified and PQ symmetries broken by the same set of fields at a scale $\sim 2\times 10^{16}$ GeV. A typical domain wall number of order 30 leads to an axion decay constant $f_a$ of order $10^{15}$ GeV. Inflation generates a large saxion condensate giving a reheat temperature $T_R$ below the QCD scale for supersymmetry breaking of order $1-10$ TeV. Axion field oscillations commence in the saxion matter-dominated era near the QCD scale, and recent lattice computations of the temperature dependence of the axion mass in this era allow a controlled calculation of the axion dark matter abundance. A successful prediction of this abundance results for an initial axion misalignment angle of order unity, $θ_i \sim 1$. A highly correlated set of predictions is discussed for $f_a$, $T_R$, the supersymmetric Higgs mass parameter $μ$, the amount of dark radiation $ΔN_{eff}$, the proton decay rate $Γ(p \rightarrow e^+ π^0)$, isocurvature density perturbations and the $B$-mode of the cosmic microwave background. The last two are particularly interesting when the energy scale of inflation is also of order $10^{16}$ GeV.
description: 29 pages, 7 figures; v2, version published in Physical Review D
Preparation of p-Type Polycrystalline Silicon Thin Films by Electron-Beam Annealing Method for Solar Cell Application
Creators: name: Kim, C.
name: Lee, C.
name: Jeong, C.
Publisher: name: WIP
Year: 2011
Subjects: Thin Film Solar Cells
Thin Film Crystalline Silicon Solar Cells

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 2810-2812
description: The amorphous silicon (a-Si) layer as an absorber layer of crystalline silicon on glass (CSOG) was
crystallized using electron beam annealing method and their characteristics were investigated for solar cell
applications. Boron doped amorphous silicon as a seed layer on glass was deposited by plasma enhanced chemical
vapor deposition (PECVD). Samples with various doping concentrations were prepared and annealed under the
conditions of e-beam intensities and exposure time. After finding investigation of the optimized properties in e-beam
annealed seed layer, undoped amorphous silicon layer was deposited using e-beam evaporation method on borondoped
seed layer. Optical, electrical and structural properties of e-beam annealed samples on seed layer and thick
absorber-layer were investigated by X-ray diffraction (XRD), Hall effect measurement, Raman photoluminescence,
scanning electron microscope (SEM) and transmission electron microscope (TEM). E-beam annealing method could
be good candidate for crystallization of amorphous silicon on glass.
Time lag in transient cosmic accreting sources
Creators: name: Bisnovatyi-Kogan, G. S.
name: Giovannelli, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We develop models for time lag between maxima of the source brightness in different wavelengths during a transient flash of luminosity connected with a short period of increase of the mass flux onto the central compact object. We derive a simple formula for finding the time delay among events in different wavelengths, valid in general for all disk accreting cosmic sources, and discuss quantitatively a model for time lag formation in AGNs. In close binaries with accretion disks the time lag is connected with effects of viscosity defining a radial motion of matter in the accretion disk. In AGN flashes, the falling matter has a low angular momentum, and the time lag is defined by the free fall time to the gravitating center. We show the validity of these models by means of several examples of galactic and extragalactic accreting sources.
description: 7 pages
General Relativistic Three-Dimensional Multi-Group Neutrino Radiation-Hydrodynamics Simulations of Core-Collapse Supernovae
Creators: name: Roberts, Luke F.
name: Ott, Christian D.
name: Haas, Roland
name: O'Connor, Evan P.
name: Diener, Peter
name: Schnetter, Erik
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on a set of long-term general-relativistic three-dimensional (3D) multi-group (energy-dependent) neutrino-radiation hydrodynamics simulations of core-collapse supernovae. We employ a full 3D two-moment scheme with the local M1 closure, three neutrino species, and 12 energy groups per species. With this, we follow the post-core-bounce evolution of the core of a nonrotating $27$-$M_\odot$ progenitor in full unconstrained 3D and in octant symmetry for $\gtrsim$$ 380\,\mathrm{ms}$. We find the development of an asymmetric runaway explosion in our unconstrained simulation. We test the resolution dependence of our results and, in agreement with previous work, find that low resolution artificially aids explosion and leads to an earlier runaway expansion of the shock. At low resolution, the octant and full 3D dynamics are qualitatively very similar, but at high resolution, only the full 3D simulation exhibits the onset of explosion.
description: Accepted to ApJ
Melospiza melodia subsp. zacapu Dickerman
Creators: name: LeCroy, Mary
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Emberizidae
Melospiza

description: Melospiza melodia zacapu Dickerman Melospiza melodia zacapu Dickerman, 1963: 40 (Zacapu, Michoacán, Mexico). Now Melospiza melodia zacapu Dickerman, 1963. See Paynter, 1970: 53, Byers et al., 1995: 229– 233, Arcese et al., 2002: 6, and Dickinson, 2003: 782. HOLOTYPE: AMNH 817694, immature female, collected at Zacapu de Mier, 19.49N, 101.48W (Times Atlas), Michoacan, Mexico, on 12 December 1956, by Robert W. Dickerman (no. 7772). Exchanged from MMNH (no. 16678) to AMNH in 1986. COMMENTS: The MMNH and RWD nos. were cited in the original description. Seventythree specimens of zacapu were examined; of the 72 paratypes, the following four are in AMNH: Zacapu, AMNH 768821 (MMNH no. 16667), male, 30 July 1956, RWD no. 7152; AMNH 768822 (16696), female, 15 May 1958, RWD no. 8804; AMNH 768823 (16699), male, 10 December 1958, RWD no. 9237; AMNH 768824 (16704), immature female, 10 December 1958, RWD no. 9242. See Dickerman (1963: 40, fig. 19) for a map showing the distribution of zacapu. Arcese et al. (2002: 6) synonymized zacapu with M. m. adusta.
description: Published as part of LeCroy, Mary, 2012, Type Specimens Of Birds In The American Museum Of Natural History Part 10. Passeriformes: Emberizidae: Emberizinae, Catamblyrhynchinae, Cardinalinae, Thraupinae, And Tersininae, pp. 1-125 in Bulletin of the American Museum of Natural History 2012 (368) on page 13, DOI: 10.1206/775.1, http://zenodo.org/record/5399454
description: {"references": ["Dickerman, R. W. 1963. The Song Sparrows of the Mexican plateau. Minnesota Museum of Natural History, Occasional Papers 9: ix + 79 pp.", "Byers, C., J. Curson, and U. Olsson. 1995. Sparrows and buntings of North America and the world. Boston: Houghton Mifflin, 334 pp., 39 pls.", "Arcese, P., M. K. Sogge, A. B. Marr, and P. A. Patten. 2002. Song Sparrow (Melospiza melodia). In A. Poole and F. Gill (editors), The birds of North America. No. 704. Philadelphia: Birds of North America, Inc."]}
Principal Component Analysis of Quantum Correlation
Creators: name: Mosetti, Renzo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The concept of quantum correlation matrix for observables leads to the application of the PCA (Principal Component Analysis) also for quantum system in Hilbert space. It is shown that, in the case of a 2x2 spin system where the observables are the Pauli matrices and a polarization vector is acting on the density matrix, meaningful results can be obtained by the PCA in terms of qubit properties. In particular, it is shown that by choosing, for example, the (x,z) spinors, the axes of the principal components (PC) coincide with the circular polarization basis on the Block Sphere.
PVD Deposited High-Purity SiC/Si Layers for E-Beam Crystallized Thin Film Solar Cells on Glass
Creators: name: Amkreutz, D.
name: Seifert, W.
name: Schönau, S.
name: Schubert, M.A.
name: Common, S.
Publisher: name: WIP
Year: 2011
Subjects: Thin Film Solar Cells
Thin Film Crystalline Silicon Solar Cells

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 2813-2817
description: Electron beam crystallization has proved to be a suitable method to prepare crystalline silicon
absorbers of high electronic quality. All cells presented so far utilised an absorber layer prepared by LPCVD
using silane (SiH4) as precursor. In combination with an a-Si(n):H emitter deposited by PECVD we were able
to achieve open circuit voltages as high as 545mV and fill factors up to 74%. However the applied LPCVD
process has several disadvantages as for example a low deposition rate of about 30 nm/min as well as the
parasitic deposition at the backside of the substrate. Due to the comparatively high absorber thicknesses
(approx. 10μm), a fast deposition process is necessary if we do not want to lose the time-benefit of the e-beam
crystallization process. As for other liquid-phase processes, the electronic quality of the crystallized absorber is
not connected to the process condition during deposition. Therefore we present our results using high-rate
electron beam evaporation for absorber deposition to overcome the mentioned issues. Another aim of this work
is the deposition of a high-purity SiC interlayer prepared by sputtering. This layer serves as diffusion-barrier,
absorber-dopant source and adhesion-promoter during the crystallization process. Thus the residual amount of
iron and other impurities in the sputtered layers is critical as they can diffuse into the absorber layer during the
high temperature zone-melting process where they act as deep traps reducing the electronic quality.
Reionization during the dark ages from a cosmic axion background
Creators: name: Evoli, Carmelo
name: Leo, Matteo
name: Mirizzi, Alessandro
name: Montanino, Daniele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently it has been pointed out that a cosmic background of relativistic axion-like particles (ALPs) would be produced by the primordial decays of heavy fields in the post-inflation epoch, contributing to the extra-radiation content in the Universe today. Primordial magnetic fields would trigger conversions of these ALPs into sub-MeV photons during the dark ages. This photon flux would produce an early reionization of the Universe, leaving a significant imprint on the total optical depth to recombination $τ$. Using the current measurement of $τ$ and the limit on the extra-radiation content $ΔN_{\rm eff} $ by the Planck experiment we put a strong bound on the ALP-photon conversions. Namely we obtain upper limits on the product of the photon-ALP coupling constant $g_{aγ}$ times the magnetic field strength $B$ down to $g_{aγ} B \gtrsim 6 \times 10^{-18} \textrm{GeV}^{-1} \textrm{nG} $ for ultralight ALPs.
description: 23 pages, 6 figures. Minor changes, references added. Prepared for publication in JCAP