cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coherent Topological Transport on the Surface of Bi2Se3
Creators: name: Kim, Dohun
name: Syers, Paul
name: Butch, Nicholas P.
name: Paglione, Johnpierre
name: Fuhrer, Michael S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The two-dimensional (2D) surface state of the three-dimensional strong topological insulator (STI) is fundamentally distinct from other 2D electron systems in that the Fermi arc encircles an odd number of Dirac points. The TI surface is in the symplectic universality class and uniquely among 2D systems remains metallic and cannot be localized by (time-reversal symmetric) disorder. However, in finite-size samples inter-surface coupling can destroy the topological protection. The question arises: At what size can a thin TI sample be treated as having decoupled topological surface states? We show that weak anti-localization(WAL) is extraordinarily sensitive to sub-meV coupling between top and bottom topological surfaces, and the surfaces of a TI film may be coherently coupled even for thicknesses as large as 12 nm. For thicker films we observe the signature of a true 2D topological metal: perfect weak anti-localization in quantitative agreement with two decoupled surfaces in the symplectic symmetry class.
description: 21 pages 6 figures, including supplementary materials
Crystal chemical studies on the growth size problem of Y zeolite
Creators: name: Salman, Nada
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: Zeolite-synthesis
subject: formation mechanism
subject: dealumination
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
CARMA interferometric observations of 2MASS J044427+2512: the first spatially resolved observations of thermal emission of a brown dwarf disk
Creators: name: Ricci, L.
name: Isella, A.
name: Carpenter, J. M.
name: Testi, L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present CARMA 1.3 mm continuum data of the disk surrounding the young brown dwarf 2MASS J044427+2512 in the Taurus molecular cloud. The high angular resolution of the CARMA observations (0.16 arcsec) allows us to spatially resolve for the first time the thermal emission from dust around a brown dwarf. We analyze the interferometric visibilities and constrain the disk outer radius adopting disk models with power-law radial profiles of the dust surface density. In the case of a power-law index equal to or lower than 1, we obtain a disk radius in the range of about 15 - 30 AU, while larger disks are inferred for steeper radial profiles. By combining this information on the disk spatial extent with the sub-mm spectral index of this source we find conclusive evidence for mm-sized grains, or larger, in this brown dwarf disk. We discuss the implications of our results on the models of dust evolution in proto-planetary disks and brown dwarf formation.
description: 14 pages, 3 figures, Accepted for publication in ApJ Letters
Construction of an effective Yang-Mills Lagrangian with manifest BCJ duality
Creators: name: Tolotti, Mathias
name: Weinzierl, Stefan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The BCJ decomposition is a highly non-trivial property of gauge theories. In this paper we systematically construct an effective Lagrangian, whose Feynman rules automatically produce the BCJ numerators. The effective Lagrangian contains non-local terms. The difference between the standard Yang-Mills Lagrangian and the effective Lagrangian simplifies to zero.
description: 22 pages
Webinar 'Improving knowledge, skills and capacity building to ensure plant health in more sustainable agricultural systems'
Creators: name: Deserio, Domenico
name: Marchand, Patrice
name: Romanazzi, Gianfranco
name: Audsley, Neil
name: Grondal, Christoph
name: Nanda, Amrit
name: Giovani, Baldissera
Publisher: name: Zenodo
Year: 2023
Subjects: Euphresco, Plants for the Future ETP, plant health, plant protection products, basic substances, biological control, R&I, gaps

description: Presentation of the webinar 'Improving knowledge, skills and capacity building to ensure plant health in more sustainable agricultural systems' jointly organized by Plants for the Future ETP and Euphresco. A healthy, productive and resilient agriculture is a prerequisite for a prosperous and sustainable bioeconomy. Healthy plants can help towards creating socially fair communities globally by contributing to end hunger, reduce poverty, protect the environment and boost economic development. Plant protection products (PPPs) are products intended to keep plants healthy by protecting them and their lant products against harmful organisms. In the last decade, there has been an increasing drive towards new and innovative low-hazard PPPs providing nature-based solutions, such as biologicals and basic substances (e.g., vinegar, charcoal). This has further been promoted by the EU Green Deal’s Farm to Fork strategy to reduce the use of chemical and more hazardous PPPs by 2023 and promoting more sustainable agricultural systems. While much research, development and innovation is being conducted to develop environmentally friendly alternatives to hazardous PPPs, the EU approval process for marketing these new PPPs is marred by regulations that are not adapted to such products, as well as a lack of knowledge and expertise of some competent authorities that lack the knowledge, skills and capacity to keep up with the latest scientific achievements. This situation has resulted in long approval processes (5-8 years), thereby significantly delaying access of these PPPs for farmers. This webinar aims to demonstrate the use of basic substances and biological as sustainable PPPs for European agriculture, as well as highlight the need to develop and share knowledge and skills related to the development of these new PPPs, as well as the need for capacity building to improve the flow of safe innovation to the market. Presentation Mr Deserio: Regulation of Plant Protection Products (PPPs) – ensuring access to new and innovative low-hazard PPPs Presentation Mr Marchand: Improving knowledge on basic substances: what they are, their approval and use Presentation Mr Romanazzi: Collaborative research and knowledge sharing on basic substances as an environmentally friendly alternative to synthetic plant protection products for plant protection Presentation Mr Audsley: Capacity building on pre-emptive biological control and preparedness against priority biosecurity threats Presentation Mr Grondal: How to de-risk R&I for PPPs – the importance of capacity building and knowledge sharing
Creation of cold and dense ensembles of calcium atoms
Creators: name: Vogt, Felix
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Cold calcium atoms
subject: optical dipole traps
subject: elastic and inelastic collisions
subject: photoassociation spectroscopy
subject: Kalte Calcium-Atome
subject: optische Dipolfallen
subject: elastische und inelastische Stöße
subject: Photoassoziations-Spektroskopie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Data analysis and source modelling for LISA
Creators: name: Shang, Yu
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: General relativity
subject: gravitational waves
subject: data analysis
subject: Allgemeine Relativitätstheorie
subject: Gravitationswellen
subject: Daten-Analyse
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Finite element modelling of immiscible two-phase flow in oil reservoirs
Creators: name: Nassan, Taofik H.
name: Amro, Mohd
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Reservoir simulators utilize numerical techniques to solve the governing equations of fluid flow in porous media and they are essential tool for oil and gas fields development. In practical reservoir simulation, the finite difference method (FDM) is the common numerical technique owing to its simplicity in application. In this paper, we introduce the finite element method (FEM) as a numerical tool to simulate an example in 3D and prior to that, Buckley-Leverett problem is used to validate using a commercial FEM-based software package that is applied through this paper. To achieve the proposed target, the mathematical model of the immiscible-two phase problem is reviewed and formulated to be applied easily in the proposed software. Immiscible two-phase flow in 3D is simulated on the 1/4th inverted five-spot benchmark and the results are shown and discussed. The results show that the FEM can be used efficiently to simulated immiscible two-phase flow in oil reservoirs with an acceptable CPU time and this is due to faster solvers advances in the last few years.
description: 26 pages
Data acquisition and data analysis for the gravitational-wave detector GEO 600
Creators: name: Kötter, Karsten
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Gravitational-wave detector
subject: data acquisition
subject: data analysis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Design and application of niosomal drug delivery systems
Creators: name: Ag Seleci, Didem
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Niosomes
subject: structure and characterization
subject: targeted drug delivery
subject: co-drug delivery
subject: Niosomen
subject: Struktur und Charakterisierung
subject: zielgerichtete Arzneimittelabgabe
subject: Ko-Arzneimittelabgabesystem
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Search For New Physics at BABAR
Creators: name: Godang, Romulus
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using a full BABAR data sample of 426 $fb^{-1}$, we present improved measurements of the ratio ${\cal{R}}(D^{(*)}) = {\cal{B}} (\bar{B} \to D^{(*)}τ^{-}\barν_τ)/$ ${\cal{B}} (\bar{B} \to D^{(*)}\ell_{\ell}^{-}\barν_{\ell})$, where $\ell$ is either electron or muon. We measure ${\cal{R}}(D) = 0.440 \pm 0.058 \pm 0.042$ and ${\cal{R}}(D^*) = 0.332 \pm 0.024 \pm 0.018$. These ratios exceed the Standard Model predictions by $2.0σ$ and $2.7σ$, respectively. The results disagree with the Standard Model predictions at the level of $3.4σ$. The ratios are sensitive to new physics contributions in the form of a charged Higgs boson. However, the access cannot be explained by a charged Higgs boson in the type II two-Higgs-doublet model.
description: Contributed to the Proceedings of Hadron Collider Physics Symposium 2012, Kyoto, Japan, November 12-16 2012
Data analysis for continuous gravitational waves : deepest all-sky surveys
Creators: name: Pletsch, Holger Johannes
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Continuous gravitational-wave detection
subject: data analysis
subject: all-sky surveys
subject: Detektion kontinuierlicher Gravitationswellen
subject: Datenanalyse
subject: Ganzhimmelerfassung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie

description: [no abstract]
title: Названия церквей и монастырей Торжка в исторической годонимике
Creators: name: Заонегина, Валентина
Publisher: name: Новгородский печатный двор
Year: 2019

description: Статья посвящена тематической проблеме в современной лингвистической науке – анализу топонимической системы малого города по названиям церквей и монастырей. Предпринята попытка систематизации агиотопонимов. Дан краткий культурно-исторический комментарий.
Does the exotic equal pollution? Landscape methods for solving the dilemma of using native versus non-native plant species in drylands
Creators: name: Kotzen, Benz
name: Branquinho, Cristina
name: Prasse, Rüdiger
Publisher: name: Chichester, Sussex : Wiley
Year: 2020
Subjects: subject: alien plants
subject: arid lands
subject: degraded areas
subject: drylands
subject: ecology
subject: introduced plants
subject: landscape restoration
subject: native plants
subject: plant material choice
subject: planting
subject: planting strategy
subject: pollution
subject: re-vegetation
subject: Biodiversity
subject: Pollution
subject: Sustainable development
subject: Arid lands
subject: Dry land
subject: Ecosystem structure
subject: Human communities
subject: Landscape characters
subject: Non-native
subject: Plant species
subject: Sustainability principles
subject: Plants (botany)
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::600 | Technik::640 | Hauswirtschaft und Familienleben
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: There is a need to resolve methods to determine the merits of native versus non-native plant use in drylands and indeed in more temperate areas around the world. This is because whilst plant introductions may have positive objectives, they can have significant negative landscape and environmental impacts. A key discussion on this issue focuses on whether the use of non-native plant species can be considered to be pollution and pollutive based on the concept that pollution can be regarded as ‘matter out of place’. The consequences of putting the wrong plant species in the wrong place can be extremely detrimental to the landscape character, quality and value of the land, let alone the effects on ecosystem structure and functioning as well as on biodiversity. These effects can also affect human communities who may rely on the landscape, for example, for tourism. It is thus necessary that the discussion on how decisions are made in determining plant choice evolves so that the right decisions are made when planting is necessary, for the land, for nature and for the people. This discussion has been initiated through COST Action ES1104, which focused on the restoration of degraded dry and arid lands. This article discusses a number of landscape methods based on sustainability principles to determine when and where native and non-native plants could and should be used. © 2020 The Authors. Land Degradation & Development published by John Wiley & Sons Ltd
A robust potential-based contact force solution approach for discontinuous deformation analysis of irregular convex polygonal block/particle systems
Creators: name: Zheng, Fei
name: Zhuang, Xiaoying
name: Zheng, Hong
name: Jiao, Yu-Yong
name: Rabczuk, Timon
Publisher: name: Berlin : Springer
Year: 2020
Subjects: subject: Block system
subject: Explicit discontinuous deformation analysis
subject: Irregular polygon
subject: Penalty function method
subject: Potential contact force
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Contact interaction of two bodies can be modeled using the penalty function approach while its accuracy and robustness are directly associated with the geometry of contact bodies. Particularly, in the research fields of rock mechanics, we need to treat polygonal shapes such as mineral grains/particles at a mesoscale and rock blocks at a macroscale. The irregular shapes (e.g., polygons with small angles or small edges) pose challenges to traditional contact solution approach in terms of algorithmic robustness and complexity. This paper proposed a robust potential-based penalty function approach to solve contact of polygonal particles/block. An improved potential function is proposed considering irregular polygonal shapes. A contact detection procedure based on the entrance block concept is presented, followed by a numerical integral algorithm to compute the contact force. The proposed contact detection approach is implemented into discontinuous deformation analysis with an explicit formulation. The accuracy and robustness of the proposed contact detection approach are verified by benchmarking examples. The potential of the proposed approach in analysis of kinetic behavior of complex polygonal block systems is shown by two application examples. It can be applied in any discontinuous computation models using stepwise contact force-based solution procedures. © 2020, The Author(s).
title: Междисциплинарный подход к исследованию городских вывесок
Creators: name: Соколова, Татьяна
Publisher: name: Новгородский печатный двор
Year: 2019

description: На основе анализа регламентации информационных конструкций в рамках дизайн-кода города обосновывается необходимость междисциплинарного подхода к исследованию современных городских вывесок как мультимодальных медиасообщений, подчеркивается необходимость лингвистического анализа вывесок как поликодовых урбанонимов.
title: Роль ономастики в преподавании русского языка как иностранного в алжирском университете
Creators: name: Гезайли, Надя
Publisher: name: Новгородский печатный двор
Year: 2019

description: В предлагаемой статье поднимается вопрос о важности включения ономастического материала в преподавание русского языка как иностранного в Алжирском университете. В данном исследовании анализируется природа имени собственного, затем выявлены способы работы с ономастическим материалом. В статье показано, что ономастический материал не только развивает лингвистические знания алжирских учащихся, но и расширяет их кругозор о культуре изучаемого языка, что способствует формированию у них лингвострановедческой компетенции. Полноценное овладение русским языком учащимися-алжирцами предполагает усвоение ими не только лексического, но и ономастического материала изучаемого языка.
The dependence of the number of pomerons on the impact parameter and the long-range rapidity correlations in pp collisions
Creators: name: Vechernin, V.
name: Lakomov, I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The simple model which enables to take into account the effects of a colour string fusion in pp interactions is suggested. The parameters of the model are connected with the parameters of the pomeron trajectory and its couplings to hadrons. On the base of the model the MC algorithm which enables to calculate the long-range correlation functions between multiplicities and between the average transverse momentum and the multiplicity in pp collisions is developed.
description: 12 pages, 3 figures, reported at the Baldin ISHEPP XXI
Assessing land use and flood management impacts on ecosystem services in a river landscape (Upper Danube, Germany)
Creators: name: Stammel, Barbara
name: Fischer, Christine
name: Cyffka, Bernd
name: Albert, Christian
name: Damm, Christian
name: Dehnhardt, Alexandra
name: Fischer, Helmut
name: Foeckler, Francis
name: Gerstner, Lars
name: Hoffmann, Tim G.
name: Iwanowski, Janette
name: Kasperidus, Hans D.
name: Linnemann, Kathrin
name: Mehl, Dietmar
name: Podschun, Simone A.
name: Rayanov, Marin
name: Ritz, Stephanie
name: Rumm, Andrea
name: Scholz, Mathias
name: Schulz-Zunkel, Christiane
name: Thiele, Julia
name: Venohr, Markus
name: Haaren, Christina Von
name: Pusch, Martin T.
name: Gelhaus, Marion
Publisher: name: New York, NY [u.a.] : Wiley
Year: 2020
Subjects: subject: assessment
subject: cultural
subject: floodplains
subject: index
subject: inter-sectoral management
subject: regulating and provisioning ecosystem services
subject: stakeholders
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: Rivers and floodplains provide many regulating, provisioning and cultural ecosystem services (ES) such as flood risk regulation, crop production or recreation. Intensive use of resources such as hydropower production, construction of detention basins and intensive agriculture substantially change ecosystems and may affect their capacity to provide ES. Legal frameworks such as the European Water Framework Directive, Bird and Habitats Directive and Floods Directive already address various uses and interests. However, management is still sectoral and often potential synergies or trade-offs between sectors are not considered. The ES concept could support a joint and holistic evaluation of impacts and proactively suggest advantageous options. The river ecosystem service index (RESI) method evaluates the capacity of floodplains to provide ES by using a standardized five-point scale for 1 km-floodplain segments based on available spatial data. This scaling allows consistent scoring of all ES and their integration into a single index. The aim of this article is to assess ES impacts of different flood prevention scenarios on a 75 km section of the Danube river corridor in Germany. The RESI method was applied to evaluate scenario effects on 13 ES with the standardized five-point scale. Synergies and trade-offs were identified as well as ES bundles and dependencies on land use and connectivity. The ratio of actual and former floodplain has the strongest influence on the total ES provision: the higher the percentage and area of an active floodplain, the higher the sum of ES. The RESI method proved useful to support decision-making in regional planning. © 2020 The Authors. River Research and Applications published by John Wiley & Sons Ltd
Knowing me, knowing you - capturing different knowledge systems for river landscape planning and governance
Creators: name: Henze, Jennifer
name: Schröter, Barbara
name: Albert, Christian
Publisher: name: Basel : MDPI AG
Year: 2018
Subjects: subject: Knowledge co-production
subject: Knowledge systems
subject: Stakeholder analysis
subject: Stakeholder interaction
subject: Thought style
subject: Transdisciplinary water research
subject: Conservation
subject: Knowledge co productions
subject: Knowledge system
subject: Water research
subject: Rivers
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Navigating the evolution of river landscapes towards more sustainable pathways requires transdisciplinary research including diverse stakeholders. A thorough understanding of stakeholder interests, including potential conflicts and options for convergence, is critical for the design and implementation of such transdisciplinary research. So far, only a few studies have conducted in-depth stakeholder analyses. The aim of this paper is to elucidate and characterize the interests of the relevant actors in a case study for sustainable river landscape development in Germany. The research questions concern the (i) commonalities and differences as manifested in the structures of thought and action of the actors, and the (ii) potential points of conflict or convergence of interests, as relevant for further transdisciplinary research. Our methods include participating in observations in three meetings of the actors, and conducting twelve individual interviews, as well as a focus group discussion. Our results identify major conflicts between the actors' perspectives regarding navigation interests and the demands for nature conservation. Potential issues for convergence are ecological river restoration and enhancing recreation opportunities. The findings shed light on the diversity of the stakeholder perspectives around river landscape development. We recommend that future projects capture this diversity through a triangulation approach.
Don’t Throw the Baby out with the Bathwater: Recreating a Valuable Feature of a Legacy System in a New Ticketing System
Creators: name: Seguin, Linda
Publisher: name: Digital Repository at the University of Maryland
Year: 2023

description: In 2021, the USMAI library consortium replaced three disparate channels for receiving service requests with a single USMAI Service Desk, using Atlassian’s Jira Service Management (JSM) - Server software. One of the ticketing systems being replaced was the homegrown and aged AlephRx, which lacked some useful features typical of a modern ticketing system. However, AlephRx had one not-so-typical feature beloved by staff at USMAI libraries: all service requests, submitted by anyone, were visible to all logged-in users, creating a de facto knowledge base. This poster describes how systems librarians configured Jira Service Management - Server to preserve this functionality so valuable to our customers.
Stealth Bias in Gravitational-Wave Parameter Estimation
Creators: name: Vallisneri, Michele
name: Yunes, Nicolas
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Inspiraling binaries of compact objects are primary targets for current and future gravitational-wave observatories. Waveforms computed in General Relativity are used to search for these sources, and will probably be used to extract source parameters from detected signals. However, if a different theory of gravity happens to be correct in the strong-field regime, source-parameter estimation may be affected by a fundamental bias: that is, by systematic errors induced due to the use of waveforms derived in the incorrect theory. If the deviations from General Relativity are not large enough to be detectable on their own and yet these systematic errors remain significant (i.e., larger than the statistical uncertainties in parameter estimation), fundamental bias cannot be corrected in a single observation, and becomes stealth bias. In this article we develop a scheme to determine in which cases stealth bias could be present in gravitational-wave astronomy. For a given observation, the answer depends on the detection signal-to-noise ratio and on the strength of the modified-gravity correction. As an example, we study three representative stellar-mass binary systems that will be detectable with second-generation ground-based observatories. We find that significant systematic bias can occur whether or not modified gravity can be positively detected, for correction strengths that are not currently excluded by any other experiment. Thus, stealth bias may be a generic feature of gravitational-wave detections, and it should be considered and characterized, using expanded models such as the parametrized post-Einstein framework, when interpreting the results of parameter-estimation analyses.
description: 9 pages, 1 figure
Dependence of low redshift Type Ia Supernovae luminosities on host galaxies
Creators: name: Liang, Wen-Ke
name: Wang, Jian-Cheng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the relation of Type Ia Supernovae (SNe Ia) with host galaxies from a large low redshift sample. By examining the Hubble residuals of the entire sample from the best-fit cosmology, we show that SNe Ia in passive hosts are brighter than those in star-forming hosts after light curve correction at 2.1σconfidence level. We find that SNe Ia in high luminosity hosts are brighter after light-curve correction at>3σconfidence level. We also find that SNe Ia in large size galaxies are brighter after light-curve correction at?2σ confidence level. We demonstrate that the residual linearly depends on host luminosity at a confidence of 4σor host size at a confidence of 3.3σ.
description: arXiv admin note: text overlap with arXiv:1107.6003 by other authors
PPP-based Swarm kinematic orbit determination
Creators: name: Ren, Le
name: Schön, Steffen
Publisher: name: Göttingen : Copernicus GmbH
Year: 2018
Subjects: subject: Swarm mission
subject: ESA
subject: GRACE
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The Swarm mission of the European Space Agency (ESA) offers excellent opportunities to study the ionosphere and to provide temporal gravity field information for the gap between the Gravity Recovery and Climate Experiment (GRACE) and its follow-on mission (GRACE-FO). In order to contribute to these studies, at the Institut für Erdmessung (IfE) Hannover, a software based on precise point positioning (PPP) batch least-squares adjustment is developed for kinematic orbit determination. In this paper, the main achievements are presented. The approach for the detection and repair of cycle slips caused by ionospheric scintillation is introduced, which is based on the Melbourne-Wübbena and ionosphere-free linear combination. The results show that around 95% of cycle slips can be repaired and the majority of the cycle slips occur on L/2. After the analysis and careful preprocessing of the observations, 1-year kinematic orbits of Swarm satellites from September 2015 to August 2016 are computed with the PPP approach. The kinematic orbits are validated with the reduced-dynamic orbits published by the ESA in the Swarm Level 2 products and SLR measurements. The differences between IfE kinematic orbits and ESA reduced-dynamic orbits are at the 1.5, 1.5 and 2.5 cm level in the along-track, cross-track and radial directions, respectively. Remaining systematics are characterized by spectral analyses, showing once-per-revolution period. The external validation with SLR measurements shows RMSEs at the 4 cm level. Finally, fully populated covariance matrices of the kinematic orbits obtained from the least-squares adjustment with 30, 10 and 1 s data rate are discussed. It is shown that for data rates larger than 10 s, the correlation between satellite positions should be taken into account, for example, for the recovery of gravity field from kinematic orbits.
Phenacolepadidae THIELE 1895
Creators: name: Fukumori, Hiroaki
name: Yahagi, Takuya
name: Warén, Anders
name: Kano, Yasunori
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Cycloneritida
Phenacolepadidae

description: FAMILY PHENACOLEPADIDAE THIELE, 1895
SUBFAMILY SHINKAILEPADINAE OKUTANI, SAITO & HASHIMOTO, 1989
description: Published as part of Fukumori, Hiroaki, Yahagi, Takuya, Warén, Anders & Kano, Yasunori, 2019, Amended generic classification of the marine gastropod family Phenacolepadidae: transitions from snails to limpets and shallow-water to deep-sea hydrothermal vents and cold seeps, pp. 636-655 in Zoological Journal of the Linnean Society 185 on page 646
Chemical trigger toward phase separation in the aqueous Al(III) system revealed
Creators: name: Lukić, Miodrag J.
name: Wiedenbeck, Eduard
name: Reiner, Holger
name: Gebauer, Denis
Publisher: name: Washington : American Association for the Advancement of Science (A A A S)
Year: 2020
Subjects: subject: Crystallization
subject: High resolution transmission electron microscopy
subject: Nuclear magnetic resonance spectroscopy
subject: Nucleation
subject: Phase separation
subject: Chemical behavior
subject: Chemical change
subject: Crystallization process
subject: Driving forces
subject: Experimental evidence
subject: Pre-nucleation
subject: Titration assays
subject: Aluminum compounds
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Although Al(III) hydrolysis, condensation, and nucleation play pivotal roles in the synthesis of Al-based compounds and determine their chemical behavior, we still lack experimental evidence regarding the chemistry of nucleation from solution. Here, by combining advanced titration assays, high-resolution transmission electron microscopy (HR-TEM), and 27Al-nuclear magnetic resonance spectroscopy, we show that highly dynamic solute prenucleation clusters (PNCs) are fundamental precursors of nanosolid formation. Chemical changes from olation to oxolation bridging within PNCs rely on the formation of tetrahedral AlO4 in solution and trigger phase separation at low driving force (supersaturation). This does not include the formation of Keggin-Al13 ions, at least during the earliest stages. The PNC pathway of the formation of Al(III) (oxy)(hydr)oxides offers new possibilities toward the development of strategies for controlling the entire crystallization process. © 2020 The Authors.
High-resolution signal-in-space measurements of VHF omnidirectional ranges using UAS
Creators: name: Schrader, Thorsten
name: Bredemeyer, Jochen
name: Mihalachi, Marius
name: Ulm, David
name: Kleine-Ostmann, Thomas
name: Stupperich, Christoph
name: Sandmann, Sergei
name: Garbe, Heyno
Publisher: name: Göttingen : Copernicus GmbH
Year: 2019
Subjects: subject: Cockpits (aircraft)
subject: Frequency modulation
subject: Omnidirectional antennas
subject: Unmanned aerial vehicles (UAV)
subject: Amplitude modulated
subject: Radio frequency measurement
subject: Signal in spaces
subject: Signal Integrity
subject: State of the art
subject: Terrestrial navigation
subject: Unmanned aerial systems
subject: Very high frequency
subject: Amplitude modulation
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: In this paper, we describe measurement results of the signal-in-space of very high frequency (VHF) omnidirectional range (VOR) facilities. In aviation VOR are used to display the current course of the aircraft in the cockpit. To understand the influence of wind turbines (WT) on the signal integrity of terrestrial navigation and radar signals, the signal content and its changes, respectively, must be investigated. So far, only numerical simulations have been carried out on the frequency-modulation (FM) part of the Doppler-VOR (DVOR) signal to estimate the influence of WT on DVOR. Up to now, the amplitude-modulated (AM) part of the DVOR was not assessed at all. In 2016, we presented an unmanned aerial system (UAS) as a carrier for state-of-the-art radio-frequency (RF) measurement instrumentation (Schrader et al., 2016a, c; Bredemeyer et al., 2016), to measure and to record the true signal-in-space (both FM and AM signal) during the flight. The signal-in-space (which refers to time-resolved signal content and field strength, respectively) is measured and sampled without loss of information and, furthermore, synchronously stored with time stamp and with precise position in space, where the measurements were taken.
Quantum Gravity via Causal Dynamical Triangulations
Creators: name: Ambjorn, J.
name: Goerlich, A.
name: Jurkiewicz, J.
name: Loll, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: "Causal Dynamical Triangulations" (CDT) represent a lattice regularization of the sum over spacetime histories, providing us with a non-perturbative formulation of quantum gravity. The ultraviolet fixed points of the lattice theory can be used to define a continuum quantum field theory, potentially making contact with quantum gravity defined via asymptotic safety. We describe the formalism of CDT, its phase diagram, and the quantum geometries emerging from it. We also argue that the formalism should be able to describe a more general class of quantum-gravitational models of Horava-Lifshitz type.
description: To appear in "Handbook of Spacetime", Springer Verlag. 31 pages
Effect of the degree of inversion on optical properties of spinel ZnFe2O4
Creators: name: Granone, Luis I.
name: Ulpe, Anna C.
name: Robben, Lars
name: Klimke, Stephen
name: Jahns, Moritz
name: Renz, Franz
name: Gesing, Thorsten M.
name: Bredow, Thomas
name: Dillert, Ralf
name: Bahnemann, Detlef W.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2018
Subjects: subject: Spinel ferrites
subject: ZnFe2O4
subject: ZFO
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Spinel ferrites (T[M1-xFex]O[MxFe2-x]O4 with 0 ≤ x ≤ 1, where M is a bivalent metal ion and the superscripts denote tetrahedral and octahedral sites) are materials commonly used in electronics due to their outstanding magnetic properties. Thus, the effect of the degree of inversion, x, on these properties is well known. However, its effect on other properties of these materials has rarely been investigated in detail. Since ferrites gained much attention during the last decade as visible light active photocatalysts and photoelectrocatalysts, understanding the effect of the degree of inversion on the optical properties became necessary. Among photocatalytically and photoelectrocatalytically active spinel ferrites, zinc ferrite (ZnFe2O4, ZFO) is one of the most widely studied materials. In this work, five ZFO samples with degrees of inversion varying from 0.07 to 0.20 were prepared by a solid-state reaction employing different annealing temperatures and subsequent quenching. Raman and UV-Vis-NIR spectra were measured and analyzed together with theoretical results obtained from ab initio calculations. Changes in the UV-Vis-NIR spectra associated with electronic transitions of tetrahedrally and octahedrally coordinated Fe3+ ions are distinguished. However, the optical band gap of the material remains unchanged as the degree of inversion varies. Based on the experimental and theoretical results, a new assignment for the Raman active internal modes and the electronic transitions of ZFO is proposed.
Shinkailepas OKUTANI ET AL. 1989
Creators: name: Fukumori, Hiroaki
name: Yahagi, Takuya
name: Warén, Anders
name: Kano, Yasunori
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Cycloneritida
Phenacolepadidae
Shinkailepas

description: SHINKAILEPAS OKUTANI ET AL., 1989
Shinkailepas Okutani et al., 1989: 224. Type species: Shinkailepas kaikatensis Okutani et al., 1989: 225; figs 2–15 (Kaikata Seamount, Japan; holotype NSMT Mo-66230), by original designation.
Olgasolaris Beck, 1992: 266. Type species: Olgasolaris tollmanni Beck, 1992: 266; text figs 2−5, pls 4–6 (Manus Back-Arc Basin, Papua New Guinea; holotype Naturhistorisches Museum Wien 85988), by original designation.
Remarks: See above for the synonymization of Olgasolaris Beck, 1992 and other details. Feminine.
description: Published as part of Fukumori, Hiroaki, Yahagi, Takuya, Warén, Anders & Kano, Yasunori, 2019, Amended generic classification of the marine gastropod family Phenacolepadidae: transitions from snails to limpets and shallow-water to deep-sea hydrothermal vents and cold seeps, pp. 636-655 in Zoological Journal of the Linnean Society 185 on page 646
Spiranthes aestivalis Rich.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. aestivalis (Poiret) Rich. Cat. 342. l: ObMiex (Paiche);nahederPissevache (Coquoz1917);beiLeizettesobSalvan(idem1911)-- 2:NördlichDräne (Saviese), etwa1100m (Terretaz 1951).- 3:NordwestlichvonRechyaufder linken Seite der Reche (Wurgler 1951).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Learning a Precipitation Indicator from Traffic Speed Variation Patterns
Creators: name: Feng, Yu
name: Brenner, Claus
name: Sester, Monika
Publisher: name: Amsterdam [u.a.] : Elsevier
Year: 2020
Subjects: subject: machine learning
subject: traffic speed variation
subject: precipitation events detection
subject: gradient boosting
subject: Konferenzschrift
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: It is common sense that traffic participants tend to drive slower under rain or snow conditions, which has been confirmed by many studies in the field of transportation research. When analyzing the relation between precipitation events and traffic speed observations, it was shown that by using extra weather information, road speed prediction models can be improved. Conversely, traffic speed variation patterns of multiple roads may also provide an indirect indication of weather conditions. In this paper, we attempt to learn such a model, which can detect the appearance of precipitation events, using only road speed observations, for the case of New York City. With a seasonal trend decomposition model Prophet, residuals between the observations and the model were used as features to represent the level of anomaly as compared to the normal traffic situation. Based on the timestamps of weather records on sunny days versus rainy or snowy days, features were extracted from traffic data and assigned to the corresponding labels. A binary classifier was then trained on six-month training data and achieved an accuracy of 91.74% when tested on the remaining two-month test data. We show that there is a significant correlation between the precipitation events and speed variation patterns of multiple roads, which can be used to train a binary indicator. This indicator can detect those precipitation events, which have a significant influence on the city traffic. The method has also a great potential to improve the emergency response of cities where massive real-time traffic speed observations are available. © 2020 The Authors. Published by Elsevier B.V.
Divia Fukumori, Yahagi, Warén & Kano, 2019, GEN. NOV.
Creators: name: Fukumori, Hiroaki
name: Yahagi, Takuya
name: Warén, Anders
name: Kano, Yasunori
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Cycloneritida
Phenacolepadidae
Divia

description: DIVIA GEN. NOV.
Type species: Shinkailepas briandi Warén & Bouchet, 2001: 174; figs 16a, b, 31d, 32, 33 (Menez Gwen, Mid Atlantic Ridge; holotype MNHN-IM-2000-32536). Divia briandi (Warén & Bouchet), comb. nov. Monotypic.
E t y m o l o g y: N a m e d a f t e r t h e Fr e n ch d e e p -s e a expedition DIVA (DIVe Azores), which provided the first specimens of the type species D. briandi. Feminine.
Diagnosis: Shell small, limpet-neritiform, with cancellate surface sculpture; spire situated at posterior right; columellar shelf relatively wide. Protoconch colourless; larval operculum with spiral grooves. Head with eye lobes; cephalic lappets lacking. Epipodial fold simple, without serration. Mantle without filamentous caeca.
Remarks: Approximately 300 specimens of D. briandi from the Menez Gwen, Lucky Strike, Rainbow, Snake Pit, Logatchev and Ashadze vent fields share the same conchological and anatomical characteristics, which agree well with the homogeneity of mitochondrial and nuclear sequences of the species (for population genetics, see Yahagi et al., 2018). The apparent variation in the colour of the shells reflects different degrees of extraneous mineral deposition at different sites (Fig. 2A–C).
description: Published as part of Fukumori, Hiroaki, Yahagi, Takuya, Warén, Anders & Kano, Yasunori, 2019, Amended generic classification of the marine gastropod family Phenacolepadidae: transitions from snails to limpets and shallow-water to deep-sea hydrothermal vents and cold seeps, pp. 636-655 in Zoological Journal of the Linnean Society 185 on page 646
Two barium stars in the Galactic bulge
Creators: name: Lebzelter, Thomas
name: Uttenthaler, Stefan
name: Straniero, Oscar
name: Aringer, Bernhard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Barium stars conserve important information on the s-process and the third dredge-up in intermediate mass stars. Their discovery in various environments is therefore of great help to test nucleosynthesis and mixing models. Our aim is to analyse two stars with a very strong barium line detected in a large survey of red giants in the Galactic bulge. Abundance analysis was done comparing synthetic model spectra based on the COMARCS code with our medium resolution spectra. Abundances of Ba, La, Y, and Fe were determined. Beside the two main targets, the analysis was also applied to two comparison stars. We confirm that both stars are barium stars. They are the first ones of this kind identified in the Galactic bulge. Their barium excesses are among the largest values found up to now. The elemental abundances are compared with current nucleosynthesis and mixing models. Furthermore, we estimate a frequency of barium stars in the Galactic bulge of about 1%, which is identical to the value for disc stars.
description: 4 pages, accepted for publication in A&A
The mechanically induced structural disorder in barium hexaferrite, BaFe12O19, and its impact on magnetism
Creators: name: Sepelak, V.
name: Myndyk, Maxym
name: Witte, R.
name: Roeder, J.
name: Menzel, Dirk
name: Schuster, R.H.
name: Hahn, H.
name: Heitjans, Paul
name: Becker, Klaus-Dieter
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: nonequilibrium cation distribution
subject: step mechanochemical route
subject: canted spin arrangement
subject: nickel ferrite
subject: enhanced magnetization
subject: mossbauer-spectroscopy
subject: mechanosynthesis
subject: nanoparticles
subject: redistribution
subject: surface
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The response of the structure of the M-type barium hexaferrite (BaFe12O19) to mechanical action through high-energy milling and its impact on the magnetic behaviour of the ferrite are investigated. Due to the ability of the Fe-57 Mossbauer spectroscopic technique to probe the environment of the Fe nuclei, a valuable insight on a local atomic scale into the mechanically induced changes in the hexagonal structure of the material is obtained. It is revealed that the milling of BaFe12O19 results in the deformation of its constituent polyhedra (FeO6 octahedra, FeO4 tetrahedra and FeO5 triangular bi-pyramids) as well as in the mechanically triggered transition of the Fe3+ cations from the regular 12k octahedral sites into the interstitial positions provided by the magnetoplumbite structure. The response of the hexaferrite to the mechanical treatment is found to be accompanied by the formation of a non-uniform nanostructure consisting of an ordered crystallite surrounded/separated by a structurally disordered surface shell/interface region. The distorted polyhedra and the non-equilibrium cation distribution are found to be confined to the amorphous near-surface layers of the ferrite nanoparticles with the thickness extending up to about 2 nm. The information on the mechanically induced short-range structural disorder in BaFe12O19 is complemented by an investigation of its magnetic behaviour on a macroscopic scale. It is demonstrated that the milled ferrite nanoparticles exhibit a pure superparamagnetism at room temperature. As a consequence of the far-from-equilibrium structural disorder in the surface shell of the nanoparticles, the mechanically treated BaFe12O19 exhibits a reduced magnetization and an enhanced coercivity.