cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modification of the Optical Properties of Molecular Chains upon Coupling to Adatoms
Creators: name: Müller, Marvin M.
name: Kosik, Miriam
name: Pelc, Marta
name: Bryant, Garnett W.
name: Ayuela, Andrés
name: Rockstuhl, Carsten
name: Słowik, Karolina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Adsorbed atoms (adatoms) coupled to the matrix of solid state host materials as impurities can significantly modify their properties. Especially in low-dimensional materials, such as one-dimensional organic polymer chains or quasi-one-dimensional graphene nanoribbons, intriguing manipulation of the optical properties, such as the absorption cross section, is possible. The most widely used approach to couple quantum emitters to optical antennas is based on the Purcell effect. This formalism, however, does not comprise charge transfer from the emitter to the antenna, but only spontaneous emission of the quantum emitter into the tailored photonic environment, that is evoked by the antenna. To capture such effects, we present a tight-binding formalism to couple an adatom to a finite Su-Schrieffer-Heeger chain, where the former is treated as a two-level system and the latter acts as an optical antenna. We systematically analyze how the coupling strength and the position of the adatom influence the optical properties of the molecular chains in the model. We take into account charge transfer from the adatom to the antenna and vice versa via an inter-system hopping parameter, and also include Coulomb interaction within the antenna as well as between the adatom and the antenna. We show that coupling the adatom to one of the bulk atoms of the linear chain results in a substantial change in optical properties already for comparatively small coupling strengths. We also find that the position of the adatom crucially determines if and how the optical properties of the chains are altered. Therefore, we identify this adatom-chain hybrid system as a tunable platform for light-matter interaction at the nanoscale.
description: 14 pages, 9 figures
Supplementary Figures and Tables from Evaluating the influence of action- and subject-specific factors on chimpanzee action copying
Creators: name: Motes-Rodrigo, Alba
name: Mundry, Roger
name: Call, Josep
name: Tennie, Claudio
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Supplementary Figures and Tables
The thermal preservation of apple slices in flexible retort pouches
Creators: name: Christenson, Clarence Gordon
Publisher: name: University of British Columbia
Year: 2010

description: Newtown Pippin and Winesap apples were taken from terminal storage, and prepared as slices to be processed in re-tortable pouches to determine an optimum process using the relatively new pouch technology. Preprocessing treatments included calcium chloride as a texture modifier, sodium bisulfite as a microbial inhibitor and colour stabiliser, and sodium acid pyrophosphate as a colour stabilizer. These reagents were added to the slices by vacuum infusion, hot blanching or cold dipping to determine their effects on the final product. The slices were packed in 300 gram pouches that were evacuated, then flushed with either nitrogen or carbon dioxide before sealing. The samples were stored at 22 and 35°C and were examined by physical, chemical and sensory methods, at intervals of two weeks, six weeks and five months after processing to determine the changes occurring within the samples. During storage, quality changes did occur, which affected the acceptance of the samPles/ particularly at the higher temperatures. Texture was vastly improved with the addition of calcium ions to old apples. Colour remained significantly lighter in samples with higher SO₂ levels. The addition of pyrophosphate was also shown to increase the lightness of the samples. The levels of reducing sugars and pH were shown to increase with the length and temperature of storage. Preparatory methods were also shown to have a great influence on the quality of the final product. Hot blanching of apple slices lead to a lower quality product than either vacuum infusion or cold dipping. Vacuum infusion was by far the most efficient preparatory method but resulted in a product with a translucent appearance and a bland flavour. Cold dipping produced the best final product. The use of carbon dioxide atmospheres within the pouch produces a lower pH and a softer texture in the samples. Nitrogen was found to be the better of the two gases for quality maintenance. In general, it was determined that apples from terminal storage were more difficult to process into a product of good quality than were apples stored for only a short time after harvest.
Dual Attention-Based Federated Learning for Wireless Traffic Prediction
Creators: name: Zhang, Chuanting
name: Dang, Shuping
name: Shihada, Basem
name: Alouini, Mohamed-Slim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Wireless traffic prediction is essential for cellular networks to realize intelligent network operations, such as load-aware resource management and predictive control. Existing prediction approaches usually adopt centralized training architectures and require the transferring of huge amounts of traffic data, which may raise delay and privacy concerns for certain scenarios. In this work, we propose a novel wireless traffic prediction framework named \textit{Dual Attention-Based Federated Learning} (FedDA), by which a high-quality prediction model is trained collaboratively by multiple edge clients. To simultaneously capture the various wireless traffic patterns and keep raw data locally, FedDA first groups the clients into different clusters by using a small augmentation dataset. Then, a quasi-global model is trained and shared among clients as prior knowledge, aiming to solve the statistical heterogeneity challenge confronted with federated learning. To construct the global model, a dual attention scheme is further proposed by aggregating the intra- and inter-cluster models, instead of simply averaging the weights of local models. We conduct extensive experiments on two real-world wireless traffic datasets and results show that FedDA outperforms state-of-the-art methods. The average mean squared error performance gains on the two datasets are up to 10\% and 30\%, respectively.
description: IEEE INFOCOM 2021 - IEEE Conference on Computer Communications
Consent forms for participants from Evaluating the influence of action- and subject-specific factors on chimpanzee action copying
Creators: name: Motes-Rodrigo, Alba
name: Mundry, Roger
name: Call, Josep
name: Tennie, Claudio
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Consent forms and information provided to the participants of the Visitor condition
Action approach to cosmological perturbations: the 2nd order metric in matter dominance
Creators: name: Boubekeur, Lotfi
name: Creminelli, Paolo
name: Norena, Jorge
name: Vernizzi, Filippo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study nonlinear cosmological perturbations during the post-inflationary evolution, using the equivalence between a perfect barotropic fluid and a derivatively coupled scalar field with Lagrangian [-(\partial ϕ)^2]^[(1+w)/2w]. Since this Lagrangian is just a special case of k-inflation, this approach is analogous to the one employed in the study of non-Gaussianities from inflation. We use this method to derive the second order metric during matter dominance in the comoving gauge directly as function of the primordial inflationary perturbation ζ. Going to Poisson gauge, we recover the metric previously derived in the literature.
description: 16 pages. New version, typo fixed in eq. (91)
Flavor decomposition for the proton helicity parton distribution functions
Creators: name: Alexandrou, Constantia
name: Constantinou, Martha
name: Hadjiyiannakou, Kyriakos
name: Jansen, Karl
name: Manigrasso, Floriano
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: subject: 530
subject: parton: distribution function
subject: quark: helicity
subject: p: helicity
subject: mass: twist
subject: pi: mass
subject: lattice field theory
subject: lattice
subject: flavor
subject: charm
subject: Elementary Particles and Fields

description: We present, for the first time, an ab initio calculation of the individual up, down, and strange quark helicity parton distribution functions for the proton. The calculation is performed within the twisted mass clover-improved fermion formulation of lattice QCD. The analysis is performed using one ensemble of dynamical up, down, strange, and charm quarks with a pion mass of 260 MeV. The lattice matrix elements are nonperturbatively renormalized and the final results are presented in the $\overline{MS}$ scheme at a scale of 2 GeV. We give results for $Δu^+(x), Δd^+(x) Δu^-(x), Δd^-(x)$, including disconnected quark loop contributions, as well as for $Δs^+(x)$ and $Δs^-(x)$. For the latter we achieve unprecedented precision compared to the phenomenological estimates.
Photoplethysmography in a minute (and a bit)
Creators: name: Charlton, Peter H
Publisher: name: Zenodo
Year: 2022
Subjects: photoplethysmography
wearables

description: An introduction to photoplethysmography, in a minute (and a bit), covering: use in clinical devices such as pulse oximeters use in wearables such as smartwatches and fitness trackers potential applications, such as detecting atrial fibrillation, assessing cardiovascular health, and monitoring breathing. Accompanying video available at: https://youtu.be/HnXDvN4WNX8
Principal Chiral Model on Superspheres
Creators: name: Mitev, Vladimir
name: Quella, Thomas
name: Schomerus, Volker
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate the spectrum of the principal chiral model (PCM) on odd-dimensional superspheres as a function of the curvature radius R. For volume-filling branes on S^{3|2}, we compute the exact boundary spectrum as a function of R. The extension to higher dimensional superspheres is discussed, but not carried out in detail. Our results provide very convincing evidence in favor of the strong-weak coupling duality between supersphere PCMs and OSP(2S+2|2S) Gross-Neveu models that was recently conjectured by Candu and Saleur in arXiv:0801.0444.
description: 47 pages (33 pages plus Appendices)
A homoclinic route to asymptotic full cooperation in adaptive networks and its failure
Creators: name: Zschaler, Gerd
name: Traulsen, Arne
name: Gross, Thilo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We consider the evolutionary dynamics of a cooperative game on an adaptive network, where the strategies of agents (cooperation or defection) feed back on their local interaction topology. While mutual cooperation is the social optimum, unilateral defection yields a higher payoff and undermines the evolution of cooperation. Although no a priori advantage is given to cooperators, an intrinsic dynamical mechanism can lead asymptotically to a state of full cooperation. In finite systems, this state is characterized by long periods of strong cooperation interrupted by sudden episodes of predominant defection, suggesting a possible mechanism for the systemic failure of cooperation in real-world systems.
description: 11 pages, 5 figures
Gorenstein rings through face rings of manifolds
Creators: name: Novik, Isabella
name: Swartz, Ed
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13F55; 13H10; 52B05

description: The face ring of a homology manifold (without boundary) modulo a generic system of parameters is studied. Its socle is computed and it is verified that a particular quotient of this ring is Gorenstein. This fact is used to prove that the sphere $g$-conjecture implies all enumerative consequences of its far reaching generalization (due to Kalai) to manifolds. A special case of Kalai's manifold $g$-conjecture is established for homology manifolds that have a codimension-two face whose link contains many vertices.
Ein Open-Citizen-Science-Projekt zur umfassenden Erfassung, Visualisierung und Analyse städtischer Gebäudedaten - Einreichung zum SaxFDM Open Data Award 2024
Creators: name: Danke, Tabea
name: Hecht, Robert
name: Rieche, Theodor
Publisher: name: Zenodo
Year: 2024
Subjects: Colouring Dresden
Colouring Cities
Open Citizen Science
Citizen Science
Gebäudewissen
Open Data
Baukultur
Klimaanpassung
klimagerechte Architektur
Energiedaten
SaxFDM
SaxFDM Tagung
SaxFDM Tagung 2024

description: Die Errichtung und Nutzung von Gebäuden sind mit hohem Ressourcenverbrauch verbunden. Informationen über die verwendeten Materialien, deren Mengen und Transportwege sind jedoch oft unvollständig oder schwer zugänglich. Citizen Science spielt eine entscheidende Rolle bei der Sammlung und Analyse solcher Daten, indem es Barrieren zwischen Wissenschaft und Gesellschaft verringert. Das Projekt "Colouring Dresden" nutzt Citizen Science, um Gebäudedaten zu sammeln und öffentlich zugänglich zu machen. Es erfasst, visualisiert und analysiert Gebäudedaten in Dresden und hat als Teil des internationalen Colouring Cities Research Programme erstmals eine lokale Open-Science-Community in Deutschland aktiviert, die über 22.000 Gebäudemerkmale kollaborativ über eine offene interaktive Plattform zusammengetragen hat. Der auf Open-Source-Technologien basierende Quellcode der Plattform ist öffentlich einsehbar und nutzbar, sodass Entwicklungen aus verschiedenen Ländern Verbesserungen vorschlagen und Fehler beheben können. Eine umfassende Prozessbeschreibung (Dokumentationen von Workshops, Poster, Präsentationen und Handreichungen) sind als Open-Access-Dokumente frei zugänglich. Die erfassten Gebäudedaten stehen unter einer offenen Lizenz zum freien Download zur Verfügung. Colouring Dresden fördert das lokale Wissen von Bürger*innen und seine langfristige Wiederverwendung auf der digitalen Plattform, verbessert die Auffindbarkeit von Gebäudedaten durch eine intuitive Kartenoberfläche und trägt zur Interoperabilität bei. Dieses Projekt zeigt, wie offene Forschungsdaten und ko-kreative Ansätze zu einem besseren Verständnis unserer gebauten Umwelt beitragen können.
Convergence to SPDEs in Stratonovich form
Creators: name: Bal, Guillaume
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35R60, 60H15, 35K15

description: We consider the perturbation of parabolic operators of the form $\partial_t+P(x,D)$ by large-amplitude highly oscillatory spatially dependent potentials modeled as Gaussian random fields. The amplitude of the potential is chosen so that the solution to the random equation is affected by the randomness at the leading order. We show that, when the dimension is smaller than the order of the elliptic pseudo-differential operator $P(x,D)$, the perturbed parabolic equation admits a solution given by a Duhamel expansion. Moreover, as the correlation length of the potential vanishes, we show that the latter solution converges in distribution to the solution of a stochastic parabolic equation with a multiplicative term that should be interpreted in the Stratonovich sense. The theory of mild solutions for such stochastic partial differential equations is developed. The behavior described above should be contrasted to the case of dimensions that are larger than or equal to the order of the elliptic pseudo-differential operator $P(x,D)$. In the latter case, the solution to the random equation converges strongly to the solution of a homogenized (deterministic) parabolic equation as is shown in the companion paper [2]. The stochastic model is therefore valid only for sufficiently small space dimensions in this class of parabolic problems.
description: 21 pages
title: Laboratory evaluation of diatomaceous earth against main stored product insects
Creators: name: Kostyukovsky, M.
name: Trostanetsky, A.
name: Menasherov, M.
name: Yasinov, G.
name: Hazan, T.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: diatomaceous earth
subject: stored product insects
subject: wheat grain

description: Julius-Kühn-Archiv; 425; 701-704
title: Expression of Glutathione-S-Transferase MU 1 (GSTM1) and Glutathione-S-Transferase Theta 1 (GSTT1) in Patients with Aplastic Anemia and Myelodysplastic Syndromes
Creators: name: Spivey, Aaron Conrad
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2003

description: Aplastic Anemia is a disorder of the hematopoietic bone marrow stem cells that is frequently associated with drug or chemical exposures. Reduced ability to detoxify drugs or chemicals may result in an increased risk of disease. Glutathione S-transferases are Phase II enzymes, which help detoxify xenobiotics. Many patients who have developed aplastic anemia and myelodysplastic syndrome have the null genotype for GSTMI and/or GSTTI. For patients with GSTMI and GSTTI positive genotypes, non-expression of these enzymes may cause an increased risk in developing aplastic anemia or myelodysplastic syndrome. To test whether genotype positive patients have GSTMI or GSTTI null phenotypes, reverse transcription polymerase chain reactions were performed on patients with aplastic anemia or myelodysplastic syndrome that were genotypically positive for GSTMI and/or GSTTI. In GSTMI genotype positive patients, 11.1% showed no detectable gene expression. In 38 patients, genotype GSTTI positive, 15.g% showed no detectable gene expression. In 15 patients whose genotype was GSTMI positive and GSTTI positive, 6.7% had no detectable gene expression for either GSTMI and GSTTI, 13.3% had no gene expression for GSTTI and 0.0% had no gene expression for GSTMI (20.0% without expression total). Patients who develop aplastic anemia and myelodysplastic syndrome may have higher levels of non-expression of the Glutathione S-transferases and may be a factor in these diseases development.
Fast Proton Decay
Creators: name: Li, Tianjun
name: Nanopoulos, Dimitri V.
name: Walker, Joel W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider proton decay in the testable flipped SU(5) X U(1)_X models with TeV-scale vector-like particles which can be realized in free fermionic string constructions and F-theory model building. We significantly improve upon the determination of light threshold effects from prior studies, and perform a fresh calculation of the second loop for the process p \to e^+ π^0 from the heavy gauge boson exchange. The cumulative result is comparatively fast proton decay, with a majority of the most plausible parameter space within reach of the future Hyper-Kamiokande and DUSEL experiments. Because the TeV-scale vector-like particles can be produced at the LHC, we predict a strong correlation between the most exciting particle physics experiments of the coming decade.
description: RevTex4, 5 pages, 3 figures, 1 table, comments added, version to appear in PLB
Reversible modulation of metal-insulator transition in VO2 via chemically-induced oxygen migration
Creators: name: Han, Kun
name: Wang, Hanyu
name: Wu, Liang
name: Cao, Yu
name: Qi, Dong-Chen
name: Li, Changjian
name: Huang, Zhen
name: Li, Xiao
name: Wang, X. Renshaw
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Metal-insulator transitions (MIT),an intriguing correlated phenomenon induced by the subtle competition of the electrons' repulsive Coulomb interaction and kinetic energy, is of great potential use for electronic applications due to the dramatic change in resistivity. Here, we demonstrate a reversible control of MIT in VO2 films via oxygen stoichiometry engineering. By facilely depositing and dissolving a water-soluble yet oxygen-active Sr3Al2O6 capping layer atop the VO2 at room temperature, oxygen ions can reversibly migrate between VO2 and Sr3Al2O6, resulting in a gradual suppression and a complete recovery of MIT in VO2. The migration of the oxygen ions is evidenced in a combination of transport measurement, structural characterization and first-principles calculations. This approach of chemically-induced oxygen migration using a water-dissolvable adjacent layer could be useful for advanced electronic and iontronic devices and studying oxygen stoichiometry effects on the MIT.
description: 16 pages, 4 figures
An assessment of fluidized bed dynamics with CPFD simulations
Creators: name: Zhang, Feichi
name: Tavakkol, Salar
name: Bohlender, Lukas
name: Dercho, Stefan
name: Zirwes, Thorsten
name: Zeller, Michael
name: Vogt, Jonas
name: Stapf, Dieter
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023

description: The computational particle fluid dynamic (CPFD) method has been used to simulate a laboratory-scale fluidized bed, which has been designed for plastic pyrolysis. The simulations have been performed under cold-mode condition, where only the fluidization of sand particles is considered. The objective of the work is to gain an in-depth understanding of the hydrodynamic behavior of the fluidized bed, which is of particular importance with regard to an efficient mixing and heating of the bed materials as well as the final product yield. The focus of the work is assessing the dynamic behavior of the fluidized bed in terms of the total kinetic energy of all sand particles KS and the bubble frequency fB. For validation of the numerical approach, the calculated pressure drop Δp shows good agreement with measured data. In accordance with measurement and theoretical analysis, Δp increases with the bed inventory mS and remains nearly constant with the bulk gas flow velocity uG. It has been shown that KS increases with uG, which is due to the increased gas flow momentum flux with uG, leading to a reinforced gas-to-solid momentum exchange. The same behavior has been found for the influence of the sand particle mass mS on KS, where KS increases with mS. uG has been found to have a subordinate effect on fB, whereas fB decreases with mS.
An increase in the gas temperature TG has led to a decreased KS, while the bed height hB and Δp remain nearly constant. This is due to the decreased density or momentum flux of the gas flow at higher TG. While up-scaling the fluidized bed, KS and fB have found to be strongly increased, whereas uG, Δp and hB were kept constant. The results reveal that it is not sufficient to use solely the general “static” parameters, i.e., hB and Δp, for characterizing hydrodynamic properties of a fluidized bed. In this case, KS and fB represent measures for the available kinetic energy and its fluctuation frequency of the whole fluidized bed system, which are more suitable for assessing the hydrodynamic behavior of the fluidized bed under up-scaled and elevated temperature conditions.
The health–related quality of life in patients with diabetic foot ulcers in the kingdom of Bahrain
Creators: name: Mairghani, Maisoon
name: Sorensen, Jan
name: Elmusharaf, Khalifa
name: Patton, Declan
name: Moore, Zena
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Aims: The aims of this study were to assess the health-related quality of life (HRQoL) of adult Bahraini patients with diabetic foot ulcers (DFU) and to explore factors associated with poor HRQoL. Methods: Cross-sectional HRQoL data were obtained from a sample of patients in active treatment for DFU at a large public hospital in Bahrain. Patient-reported HRQOL was measured using the following instruments: DFS-SF, CWIS and EQ-5D. Results: The patient sample included 94 patients, with a mean age of 61.8 (SD: 9.9) years, 54 (57.5%) were males, and 68 (72.3%) were native Bahrainis. Poorer HRQoL was found among patients who were unemployed, divorced/widowed, and those with a shorter duration of formal education. Additionally, patients with severe DFUs, persisting ulcers, and a longer duration of diabetes reported statistically significantly poorer HRQoL. Conclusions: Findings from this study demonstrate a low level of HRQoL among Bahraini patients with DFUs. A longer duration of diabetes, in addition to ulcer severity and status statistically significantly influence HRQoL.
Ein Open-Citizen-Science-Projekt zur umfassenden Erfassung, Visualisierung und Analyse städtischer Gebäudedaten - Folien zum Pitch bei der Preisverleihung des SaxFDM Open Data Award 2024
Creators: name: Danke, Tabea
name: Hecht, Robert
name: Rieche, Theodor
Publisher: name: Zenodo
Year: 2024
Subjects: Colouring Dresden
Colouring Cities
Open Citizen Science
Citizen Science
Gebäudewissen
Open Data
Baukultur
Klimaanpassung
klimagerechte Architektur
Energiedaten
SaxFDM
SaxFDM Tagung
SaxFDM Tagung 2024

description: Die Errichtung und Nutzung von Gebäuden sind mit hohem Ressourcenverbrauch verbunden. Informationen über die verwendeten Materialien, deren Mengen und Transportwege sind jedoch oft unvollständig oder schwer zugänglich. Citizen Science spielt eine entscheidende Rolle bei der Sammlung und Analyse solcher Daten, indem es Barrieren zwischen Wissenschaft und Gesellschaft verringert. Das Projekt "Colouring Dresden" nutzt Citizen Science, um Gebäudedaten zu sammeln und öffentlich zugänglich zu machen. Es erfasst, visualisiert und analysiert Gebäudedaten in Dresden und hat als Teil des internationalen Colouring Cities Research Programme erstmals eine lokale Open-Science-Community in Deutschland aktiviert, die über 22.000 Gebäudemerkmale kollaborativ über eine offene interaktive Plattform zusammengetragen hat. Der auf Open-Source-Technologien basierende Quellcode der Plattform ist öffentlich einsehbar und nutzbar, sodass Entwicklungen aus verschiedenen Ländern Verbesserungen vorschlagen und Fehler beheben können. Eine umfassende Prozessbeschreibung (Dokumentationen von Workshops, Poster, Präsentationen und Handreichungen) sind als Open-Access-Dokumente frei zugänglich. Die erfassten Gebäudedaten stehen unter einer offenen Lizenz zum freien Download zur Verfügung. Colouring Dresden fördert das lokale Wissen von Bürger*innen und seine langfristige Wiederverwendung auf der digitalen Plattform, verbessert die Auffindbarkeit von Gebäudedaten durch eine intuitive Kartenoberfläche und trägt zur Interoperabilität bei. Dieses Projekt zeigt, wie offene Forschungsdaten und ko-kreative Ansätze zu einem besseren Verständnis unserer gebauten Umwelt beitragen können.
description: The project is funded as a winner in the citizen science competition "Auf die Plätze! Citizen science in your city" (https://www.citizenscience-wettbewerb.de/). The competition is being organised by "Wissenschaft im Dialog", the joint initiative of German science for science communication, and by the Museum für Naturkunde Berlin in close cooperation with the citizen science platform "Bürger schaffen Wissen" (citizens create knowledge). The funding comes from the Federal Ministry of Education and Research (BMBF) of Germany.
Habitability Models for Astrobiology
Creators: name: Méndez, Abel
name: Rivera-Valentín, Edgard E.
name: Schulze-Makuch, Dirk
name: Filiberto, Justin
name: Ramírez, Ramses M.
name: Wood, Tana
name: Dávila, Alfonso
name: McKay, Chris
name: Ceballos, Kevin N. Ortiz
name: Jusino-Maldonado, Marcos
name: Torres-Santiago, Nicole J.
name: Nery, Guillermo
name: Heller, René
name: Byrne, Paul K.
name: Malaska, Michael J.
name: Nathan, Erica
name: Simões, Marta F.
name: Antunes, André
name: Martínez-Frías, Jesús
name: Carone, Ludmila
name: Izenberg, Noam R.
name: Atri, Dimitra
name: Chitty, Humberto I. Carvajal
name: Nowajewski-Barra, Priscilla
name: Rivera-Hernández, Frances
name: Brown, Corine
name: Lynch, Kennda
name: Catling, David
name: Zuluaga, Jorge I.
name: Salazar, Juan F.
name: Chen, Howard
name: González, Grizelle
name: Jagadeesh, Madhu Kashyap
name: Haqq-Misra, Jacob
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Habitability has been generally defined as the capability of an environment to support life. Ecologists have been using Habitat Suitability Models (HSMs) for more than four decades to study the habitability of Earth from local to global scales. Astrobiologists have been proposing different habitability models for some time, with little integration and consistency among them, being different in function to those used by ecologists. Habitability models are not only used to determine if environments are habitable or not, but they also are used to characterize what key factors are responsible for the gradual transition from low to high habitability states. Here we review and compare some of the different models used by ecologists and astrobiologists and suggest how they could be integrated into new habitability standards. Such standards will help to improve the comparison and characterization of potentially habitable environments, prioritize target selections, and study correlations between habitability and biosignatures. Habitability models are the foundation of planetary habitability science and the synergy between ecologists and astrobiologists is necessary to expand our understanding of the habitability of Earth, the Solar System, and extrasolar planets.
description: Published in Astrobiology, 21(8). arXiv admin note: substantial text overlap with arXiv:2007.05491
Hamiltonian thermodynamics of three-dimensional dilatonic black holes
Creators: name: Dias, Gonçalo A. S.
name: Lemos, José P. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The action for a class of three-dimensional dilaton-gravity theories with a cosmological constant can be recast in a Brans-Dicke type action, with its free $ω$ parameter. These theories have static spherically symmetric black holes. Those with well formulated asymptotics are studied through a Hamiltonian formalism, and their thermodynamical properties are found out. The theories studied are general relativity ($ω\to\infty$), a dimensionally reduced cylindrical four-dimensional general relativity theory ($ω=0$), and a theory representing a class of theories ($ω=-3$). The Hamiltonian formalism is setup in three dimensions through foliations on the right region of the Carter-Penrose diagram, with the bifurcation 1-sphere as the left boundary, and anti-de Sitter infinity as the right boundary. The metric functions on the foliated hypersurfaces are the canonical coordinates. The Hamiltonian action is written, the Hamiltonian being a sum of constraints. One finds a new action which yields an unconstrained theory with one pair of canonical coordinates $\{M,P_M\}$, $M$ being the mass parameter and $P_M$ its conjugate momenta The resulting Hamiltonian is a sum of boundary terms only. A quantization of the theory is performed. The Schrödinger evolution operator is constructed, the trace is taken, and the partition function of the canonical ensemble is obtained. The black hole entropies differ, in general, from the usual quarter of the horizon area due to the dilaton.
description: 34 pages, 3 figures, references added, minor changes in the revised version
Multiple Quantum NMR and Entanglement Dynamics in Dipolar Coupling Spin
Creators: name: Furman, G. B.
name: Meerovich, V. M.
name: Sokolovsky, V. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate numerically the time dependence of the multiple quantum coherences and entanglement in linear chains up to nine nuclear spins of 1/2 coupled by the dipole-dipole interactions. Two models are considered: (1) a spin chain with nearest-neighbor dipole -dipole interactions; (2) a more realistic model with interactions between all spins. It is shown that the entangled states appear between remote particles which do not interact directly (model 1), while the interaction between all spins (model 2) not always results in entanglement between remote spins.
description: 14 pages, 3 figures. accepted for publication in Physical Review A
COVID-19 Collection Infosheet (03.2021)
Creators: name: Saji, Ami
name: Morales, Laura
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19
EMM Survey Registry
ETHMIGSURVEYDATA
SSHOC
Social Sciences and Humanities Open Cloud
Europe
survey research
migrant minorities
ethnic minorities
social sciences
Open Science

description: This document is an infosheet informing data producers of COVID-19 surveys with EMM (ethnic and migrant minority) respondents about the EMM Survey Registry and its COVID-19 collection, as well as encouraging them to contribute metadata about their survey to the COVID-19 collection. -- The EMM Survey Registry has been jointly produced by SSHOC’s Task 9.2 (Ethnic Migration Studies) team of Work Package 9 (Data Communities), in close collaboration with COST Action 16111 – ETHMIGSURVEYDATA (an international network of more than 200 researchers active in the ethnic and migration studies field) and FAIRETHMIGQUANT (a French Agence Nationale de la Recherche funded Open Science project).
Finsler geodesics in the presence of a convex function and their applications
Creators: name: Caponio, Erasmo
name: Javaloyes, Miguel Angel
name: Masiello, Antonio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C60, 58E10, 83C10

description: We obtain a result about the existence of only a finite number of geodesics between two fixed non-conjugate points in a Finsler manifold endowed with a convex function. We apply it to Randers and Zermelo metrics. As a by-product, we also get a result about the finiteness of the number of lightlike and timelike geodesics connecting an event to a line in a standard stationary spacetime.
description: 16 pages, AMSLaTex. v2 is a minor revision: title changed, references updated, typos fixed; it matches the published version. This preprint and arXiv:math/0702323v3 [math.DG] substitute arXiv:math/0702323v2 [math.DG]
The Effects of Magnetic Fields on Observational Signatures of Atmospheric Escape in Exoplanets: Double Tail Structures
Creators: name: Carolan, S.
name: Vidotto, A. A.
name: Hazra, G.
name: D'Angelo, C. Villarreal
name: Kubyshkina, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Using 3D radiative MHD simulations and Lyman-$α$ transit calculations, we investigate the effect of magnetic fields on the observational signatures of atmospheric escape in exoplanets. Using the same stellar wind, we vary the planet's dipole field strength ($B_p$) from 0 to 10G. For $B_p<3$G, the structure of the escaping atmosphere begins to break away from a comet-like tail following the planet ($B_p=0$), as we see more absorbing material above and below the orbital plane. For $B_p\geq3$G, we find a ``dead-zone'' around the equator, where low velocity material is trapped in the closed magnetic field lines. The dead-zone separates two polar outflows where absorbing material escapes along open field lines, leading to a double tail structure, above and below the orbital plane. We demonstrate that atmospheric escape in magnetised planets occurs through polar outflows, as opposed to the predominantly night-side escape in non-magnetised models. We find a small increase in escape rate with $B_p$, though this should not affect the timescale of atmospheric loss. As the size of the dead-zone increases with $B_p$, so does the line centre absorption in Lyman-$α$, as more low-velocity neutral hydrogen covers the stellar disc during transit. For $B_p<3$G the absorption in the blue wing decreases, as the escaping atmosphere is less funnelled along the line of sight by the stellar wind. In the red wing (and for $B_p>3$G in the blue wing) the absorption increases caused by the growing volume of the magnetosphere. Finally we show that transits below and above the mid-disc differ caused by the asymmetry of the double tail structure.
description: Accepted for publication in MNRAS. 12 pages, 8 figures
Fresnel reflection and transmission in the presence of gain media
Creators: name: Mansuripur, Masud
name: Jakobsen, Per K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: When a monochromatic electromagnetic plane-wave arrives at the flat interface between its transparent host (i.e., the incidence medium) and an amplifying (or gainy) second medium, the incident beam splits into a reflected wave and a transmitted wave. In general, there is a sign ambiguity in connection with the k-vector of the transmitted beam, which requires at the outset that one decide whether the transmitted beam should grow or decay as it recedes from the interface. The question has been posed and addressed most prominently in the context of incidence at large angles from a dielectric medium of high refractive index onto a gain medium of lower refractive index. Here, the relevant sign of the transmitted k-vector determines whether the evanescent-like waves within the gain medium exponentially grow or decay away from the interface. We examine this and related problems in a more general setting, where the incident beam is taken to be a finite-duration wavepacket whose footprint in the interfacial plane has a finite width. Cases of reflection from and transmission through a gainy slab of finite-thickness as well as those associated with a semi-infinite gain medium will be considered. The broadness of the spatio-temporal spectrum of our incident wavepacket demands that we develop a general strategy for deciding the signs of all the k-vectors that enter the gain medium. Such a strategy emerges from a consideration of the causality constraint that is naturally imposed on both the reflected and transmitted wavepackets.
description: 29 pages, 16 figures, 43 equations, 15 references, 5 appendices
Von performativen Äußerungen zum Performative Turn. Performativitätstheorien zwischen Sprach- und Medienparadigma
Creators: name: Gertenbach, Lars
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: Performativität
subject: Performative Turn
subject: soziologische Theorie
subject: Kulturtheorie
subject: Michel Callon
subject: Karen Barad
subject: Pierre Bourdieu
subject: Judith Butler
subject: John Austin
subject: performativity
subject: performative turn
subject: social theory
subject: cultural theory
subject: performativité
subject: tournant performatif
subject: théorie sociologique
subject: théorie de la culture
subject: 300
subject: Performativität
subject: Performative turn
subject: Soziologische Theorie
subject: Kulturtheorie
subject: Callon, Michel
subject: Barad, Karen
subject: Bourdieu, Pierre
subject: Butler, Judith
subject: Austin, J. L.

description: Gefördert im Rahmen des Projekts DEAL
Theory of the time-resolved Kerr rotation on trapped holes
Creators: name: Machnikowski, Paweł
name: Kuhn, Tilmann
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We formulate a model of the time-resolved Kerr rotation experiment on a single hole in a semiconductor nanostructure (e.g., a quantum dot) or on an ensemble of trapped holes (e.g., in a quantum well) in a tilted magnetic field. We use a generic Markovian description of the hole and trion dephasing and focus on the interpretation of the time-resolved signal in terms of the microscopic evolution of the spin polarization. We show that the signal in an off-plane field contains components that reveal both the spin relaxation rate and the spin coherence dephasing rate. We derive analytical formulas for the hole spin polarization, which may be used to extract the two relevant rates by fitting to the measurement data.
description: 13 pages, 7 figures
Revisiting climate change effects on winter chill in mountain oases of northern Oman
Creators: name: Bürkert, Andreas
name: Fernandez, Eduardo
name: Tietjen, Beke
name: Lüdeling, Eike
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: Arabia
subject: arid environments
subject: chill requirements
subject: fruit production
subject: global warming
subject: warm winters
subject: 550
subject: Arabia
subject: Oman
subject: Oase
subject: Trockengebiet
subject: Kälte
subject: Frucht
subject: Klimaänderung

description: Gefördert im Rahmen des Projekts DEAL
The Astrophysical Variance in Gaia-RVS Spectra
Creators: name: Rampalli, Rayna
name: Ness, Melissa
name: Wylie, Shola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Large surveys are providing a diversity of spectroscopic observations with Gaia alone set to deliver millions of Ca-triplet-region spectra across the Galaxy. We aim to understand the dimensionality of the chemical abundance information in the Gaia-RVS data to inform galactic archaeology pursuits. We fit a quadratic model of four primary sources of variability, described by labels of $T_{\rm eff}$, $\log g$, [Fe/H], and [$α$/Fe], to the normalized flux of 10,802 red-clump stars from the Gaia-RVS-like ARGOS survey. We examine the residuals between ARGOS spectra and the models and find that the models capture the flux variability across $85\%$ of the wavelength region. The remaining residual variance is concentrated to the Ca-triplet features, at an amplitude up to $12\%$ of the normalized flux. We use principal component analysis on the residuals and find orthogonal correlations in the Ca-triplet core and wings. This variability, not captured by our model, presumably marks departures from the completeness of the 1D-LTE label description. To test the indication of low-dimensionality, we turn to abundance-space to infer how well we can predict measured [Si/H], [O/H], [Ca/H], [Ni/H], and [Al/H] abundances from the Gaia-RVS-like RAVE survey with models of $T_{\rm eff}$, $\log g$, [Fe/H], and [Mg/Fe]. We find that we can near-entirely predict these abundances. Using high-precision APOGEE abundances, we determine that a measurement uncertainty of $
description: 16 pages, 10 figures, 3 appendices. Accepted in ApJ, section updated based on cited author feedback
Light and strange hadron production and anisotropic flow measurement in Au+Au collisions at ${\sqrt{s_{\rm NN}} = \rm{3\,GeV}}$ from STAR
Creators: name: Xie, Guannan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this proceeding, we present on our first measurements of identified particle ($π$, $K$, $p$, $K_{s}^{0}$, $Λ$, $ϕ$, $Ξ^{-}$) production and anisotropic flow ($v_{1}$, $v_{2}$) in Au+Au collisions at ${\sqrt{s_{\rm NN}} = \rm{3\,GeV}}$. Various models including thermal and transport model calculations are compared to data, these results imply that the matter produced in the 3 GeV Au+Au collisions is considerably different from that at higher energies.
description: 4 pages, 4 figures, Strangeness in Quark Matter Conference 2021
Superperturbation solver for quantum impurity models
Creators: name: Hafermann, Hartmut
name: Jung, Christoph
name: Brener, Sergey
name: Katsnelson, Mikhail I.
name: Rubtsov, Alexei N.
name: Lichtenstein, Alexander I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a very efficient solver for the general Anderson impurity problem. It is based on the perturbation around a solution obtained from exact diagonalization using a small number of bath sites. We formulate a perturbation theory which is valid for both weak and strong coupling and interpolates between these limits. Good agreement with numerically exact quantum Monte-Carlo results is found for a single bath site over a wide range of parameters. In particular, the Kondo resonance in the intermediate coupling regime is well reproduced for a single bath site and the lowest order correction. The method is particularly suited for low temperatures and alleviates analytical continuation of imaginary time data due to the absence of statistical noise compared to quantum Monte-Carlo impurity solvers.
description: 6 pages, 5 figures
Navigation In Urban Environments Amongst Pedestrians Using Multi-Objective Deep Reinforcement Learning
Creators: name: Deshpande, Niranjan
name: Vaufreydaz, Dominique
name: Spalanzani, Anne
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Urban autonomous driving in the presence of pedestrians as vulnerable road users is still a challenging and less examined research problem. This work formulates navigation in urban environments as a multi objective reinforcement learning problem. A deep learning variant of thresholded lexicographic Q-learning is presented for autonomous navigation amongst pedestrians. The multi objective DQN agent is trained on a custom urban environment developed in CARLA simulator. The proposed method is evaluated by comparing it with a single objective DQN variant on known and unknown environments. Evaluation results show that the proposed method outperforms the single objective DQN variant with respect to all aspects.
COVID-19 Collection Infosheet
Creators: name: Saji, Ami
name: Morales, Laura
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19
EMM Survey Registry
ETHMIGSURVEYDATA
SSHOC
Social Sciences and Humanities Open Cloud
Europe
survey research
migrant minorities
ethnic minorities
social sciences
Open Science

description: This document is an infosheet informing data producers of COVID-19 surveys with EMM (ethnic and migrant minority) respondents about the EMM Survey Registry and its COVID-19 collection, as well as encouraging them to contribute metadata about their survey to the COVID-19 collection. -- The EMM Survey Registry has been jointly produced by SSHOC’s Task 9.2 (Ethnic Migration Studies) team of Work Package 9 (Data Communities), in close collaboration with COST Action 16111 – ETHMIGSURVEYDATA (an international network of more than 200 researchers active in the ethnic and migration studies field) and FAIRETHMIGQUANT (a French Agence Nationale de la Recherche funded Open Science project).