cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Revealing Cultural Ecosystem Services through Instagram Images : The Potential of Social Media Volunteered Geographic Information for Urban Green Infrastructure Planning and Governance
Creators: name: Guerrero, Paulina
name: Møller, Maja Steen
name: Olafsson, Anton Stahl
name: Snizek, Bernhard
Publisher: name: Lisbon : Cogitatio Press
Year: 2016
Subjects: subject: cultural ecosystem services
subject: e-governance
subject: green space governance
subject: spatial analysis
subject: VGI
subject: Ökosystemdienstleistung
subject: E-Regierung
subject: Grünflächenverwaltung
subject: Raumanalyse
subject: freiwillig erhobene geografische Informationen
subject: Grünplanung
subject: Stadtgestaltung
subject: Ökosystemdienstleistung
subject: E-Government
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::710 | Landschaftsgestaltung, Raumplanung

description: With the prevalence of smartphones, new ways of engaging citizens and stakeholders in urban planning and govern-ance are emerging. The technologies in smartphones allow citizens to act as sensors of their environment, producing and sharing rich spatial data useful for new types of collaborative governance set-ups. Data derived from Volunteered Geographic Information (VGI) can support accessible, transparent, democratic, inclusive, and locally-based governance situations of interest to planners, citizens, politicians, and scientists. However, there are still uncertainties about how to actually conduct this in practice. This study explores how social media VGI can be used to document spatial tendencies regarding citizens’ uses and perceptions of urban nature with relevance for urban green space governance. Via the hashtag #sharingcph, created by the City of Copenhagen in 2014, VGI data consisting of geo-referenced images were collected from Instagram, categorised according to their content and analysed according to their spatial distribution patterns. The results show specific spatial distributions of the images and main hotspots. Many possibilities and much potential of using VGI for generating, sharing, visualising and communicating knowledge about citizens’ spatial uses and preferences exist, but as a tool to support scientific and democratic interaction, VGI data is challenged by practical, technical and ethical concerns. More research is needed in order to better understand the usefulness and application of this rich data source to governance.
The nanohertz stochastic gravitational wave background from cosmic string loops and the abundant high redshift massive galaxies
Creators: name: Wang, Ziwei
name: Lei, Lei
name: Jiao, Hao
name: Feng, Lei
name: Fan, Yi-Zhong
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, pulsar timing array (PTA) experiments have provided compelling evidence for the existence of the nanohertz stochastic gravitational wave background (SGWB). In this work, we demonstrated that cosmic string loops generated from cosmic global strings offer a viable explanation for the observed nanohertz SGWB data, requiring a cosmic string tension parameter of $\log(Gμ) \sim -12$ and a loop number density of $\log N \sim 4$. Additionally, we revisited the impact of cosmic string loops on the abundance of massive galaxies at high redshifts. However, our analysis revealed challenges in identifying a consistent parameter space that can concurrently explain both the SGWB data and observations from the James Webb Space Telescope. This indicates the necessity for either extending the existing model employed in this research or acknowledging distinct physical origins for these two phenomena.
description: 7 pages, 4 figures, accepted for publication in Sci. China-Phys. Mech. Astron. (SCPMA)
Rainfall disaggregation for hydrological modeling: is there a need for spatial consistence?
Creators: name: Müller-Thomy, Hannes
name: Wallner, Markus
name: Förster, Kristian
Publisher: name: München : European Geosciences Union
Year: 2018
Subjects: subject: Rainfall disaggregation
subject: Lower Saxony, Germany
subject: Hydrological modelling
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::551 | Geologie, Hydrologie, Meteorologie

description: In this study, the influence of disaggregated rainfall products with different degrees of spatial consistence on rainfall–runoff modeling results is analyzed for three mesoscale catchments in Lower Saxony, Germany. For the disaggregation of daily rainfall time series into hourly values, a multiplicative random cascade model is applied. The disaggregation is applied on a station by station basis without consideration of surrounding stations; hence subsequent steps are then required to implement spatial consistence. Spatial consistence is represented here by three bivariate spatial rainfall characteristics that complement each other. A resampling algorithm and a parallelization approach are evaluated against the disaggregated time series without any subsequent steps. With respect to rainfall, clear differences between these three approaches can be identified regarding bivariate spatial rainfall characteristics, areal rainfall intensities and extreme values. The resampled time series lead to the best agreement with the observed ones. Using these different rainfall products as input to hydrological modeling, we hypothesize that derived runoff statistics – with emphasis on seasonal extreme values – are subject to similar differences as well. However, an impact on the extreme values' statistics of the hydrological simulations forced by different rainfall approaches cannot be detected. Several modifications of the study design using rainfall–runoff models with and without parameter calibration or using different rain gauge densities lead to similar results in runoff statistics. Only if the spatially highly resolved rainfall–runoff WaSiM model is applied instead of the semi-distributed HBV-IWW model can slight differences regarding the seasonal peak flows be identified. Hence, the hypothesis formulated before is rejected in this case study. These findings suggest that (i) simple model structures might compensate for deficiencies in spatial representativeness through parameterization and (ii) highly resolved hydrological models benefit from improved spatial modeling of rainfall.
A simulation study on spatial and time resolution for a cost-effective positron emission particle tracking system
Creators: name: Oppotsch, Josephine
name: Steinke, Matthias
name: Fritsch, Miriam
name: Heinsius, Fritz-Herbert
name: Held, Thomas
name: Hilse, Nikoline
name: Scherer, Viktor
name: Wiedner, Ulrich
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: This work is the second part of a simulation study investigating the processing of densely packed and moving granular assemblies by positron emission particle tracking (PEPT). Since medical PET scanners commonly used for PEPT are very expensive, a PET-like detector system based on cost-effective organic plastic scintillator bars is being developed and tested for its capabilities. In this context, the spatial resolution of a resting positron source, a source moving on a freely designed model path, and a particle motion given by a DEM (Discrete Element Method) simulation is studied using Monte Carlo simulations and the software toolkit Geant4. This not only extended the simulation and reconstruction to a moving source but also significantly improved the spatial resolution compared to previous work by adding oversampling and iteration to the reconstruction algorithm. Furthermore, in the case of a source following a trajectory developed from DEM simulations, a very good resolution of about 1 mm in all three directions and an average three-dimensional deviation between simulated and reconstructed events of 2.3 mm could be determined. Thus, the resolution for a realistic particle motion within the generic grate system (which is the test rig for further experimental studies) is well below the smallest particle size. The simulation of the dependence of the reconstruction accuracy on tracer particle location revealed a nearly constant efficiency within the entire detector system, which demonstrates that boundary effects can be neglected.
description: Published in Particuology 88 (2024) 312-322. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Discovery of Diffuse Hard X-Ray Emission from the Vicinity of PSR J1648-4611 with Suzaku
Creators: name: Sakai, Michito
name: Matsumoto, Hironori
name: Haba, Yoshito
name: Kanou, Yasufumi
name: Miyamoto, Youhei
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We observed the pulsar PSR J1648-4611 with Suzaku. Two X-ray sources, Suzaku J1648-4610 (Src A) and Suzaku J1648-4615 (Src B), were found in the field of view. Src A is coincident with the pulsar PSR J1648-4611, which was also detected by the Fermi Gamma-ray Space Telescope. A hard-band image indicates that Src A is spatially extended. We found point sources in the vicinity of Src A by using a Chandra image of the same region, but the point sources have soft X-ray emission and cannot explain the hard X-ray emission of Src A. The hard-band spectrum of Src A can be reproduced by a power-law model with a photon index of 2.0^{+0.9}_{-0.7}. The X-ray flux in the 2-10 keV band is 1.4 \times 10^{-13} erg cm^{-2} s^{-1}. The diffuse emission suggests a pulsar wind nebula around PSR J1648-4611, but the luminosity of Src A is much larger than that expected from the spin-down luminosity of the pulsar. Parts of the very-high-energy gamma-ray emission of HESS J1646-458 may be powered by this pulsar wind nebula driven by PSR J1648-4611. Src B has soft emission, and its X-ray spectrum can be described by a power-law model with a photon index of 3.0^{+1.4}_{-0.8}. The X-ray flux in the 0.4-10 keV band is 6.4 \times 10^{-14} erg s^{-1} cm^{-2}. No counterpart for Src B is found in literatures.
description: Accepted for publication in PASJ Vol.65 No.4
Role and Impact of Hydrograph Shape on Tidal Current-Induced Scour in Physical-Modelling Environments
Creators: name: Schendel, Alexander
name: Welzel, Mario
name: Hildebrandt, Arndt
name: Schlurmann, Torsten
name: Hsu, Tai-Wen
Publisher: name: Basel : MDPI
Year: 2019
Subjects: subject: scour
subject: tidal currents
subject: unsteady flow
subject: sediment transport
subject: hydrograph
subject: laboratory tests
subject: temporal scour development
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: For physical model tests, the time-varying characteristics of tidal currents are often simplified by a hydrograph following a shape of a unidirectional current or by resolving the tidal velocity signal into discrete steps of constant flow velocity. The influence of this generalization of the hydrograph’s shape on the scouring process in tidal currents has not yet been investigated systematically, further increasing the uncertainty in the prediction of scour depth and rate. Therefore, hydraulic model tests were carried out to investigate and quantify the influence of the hydrograph shape on the scouring processes under tidal currents. Several different hydrographs including those with continuously changing velocities, constant unidirectional currents, square-tide velocities and stepped velocity time series were analyzed. Results show that the scouring process in tidal currents is characterized by concurrent sediment backfilling and displacement which can only be reproduced by hydrographs that incorporate a varying flow direction. However, if only a correct representation of final scour depths is of interest, similar scour depths as in tidal currents might be achieved by a constant, unidirectional current, provided that a suitable flow velocity is selected. The effective flow work approach was found capable to identify such suitable hydraulic loads with reasonable practical accuracy.
A Note on Elementary Cellular Automata Classification
Creators: name: Martinez, Genaro J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: We overview and compare classifications of elementary cellular automata, including Wolfram's, Wuensche's, Li and Packard, communication complexity, power spectral, topological, surface, compression, lattices, and morphological diversity classifications. This paper summarises several classifications of elementary cellular automata (ECA) and compares them with a newly proposed one, that induced by endowing rules with memory.
description: 26 pages, 4 figures, accepted by publish in Journal of Cellular Automata
Robust vulnerability analysis of nuclear facilities subject to external hazards
Creators: name: Tolo, Silvia
name: Patelli, Edoardo
name: Beer, Michael
Publisher: name: Berlin, Heidelberg : Springer
Year: 2016
Subjects: subject: Risk analysis
subject: Enhanced Bayesian Networks
subject: Epistemic uncertainty
subject: Stochastic models
subject: Imprecise probabilities
subject: Climate change
subject: Spent fuel
subject: Risikoanalyse
subject: Bayessches Netz
subject: Stochastisches Modell
subject: Klimawandel
subject: Treibstoffverbrauch
subject: unpräzise Wahrscheinlichkeiten
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Natural hazards have the potential to trigger complex chains of events in technological installations leading to disastrous effects for the surrounding population and environment. The threat of climate change of worsening extreme weather events exacerbates the need for new models and novel methodologies able to capture the complexity of the natural-technological interaction in intuitive frameworks suitable for an interdisciplinary field such as that of risk analysis. This study proposes a novel approach for the quantification of risk exposure of nuclear facilities subject to extreme natural events. A Bayesian Network model, initially developed for the quantification of the risk of exposure from spent nuclear material stored in facilities subject to flooding hazards, is adapted and enhanced to include in the analysis the quantification of the uncertainty affecting the output due to the imprecision of data available and the aleatory nature of the variables involved. The model is applied to the analysis of the nuclear power station of Sizewell B in East Anglia (UK), through the use of a novel computational tool. The network proposed models the direct effect of extreme weather conditions on the facility along several time scenarios considering climate change predictions as well as the indirect effects of external hazards on the internal subsystems and the occurrence of human error. The main novelty of the study consists of the fully computational integration of Bayesian Networks with advanced Structural Reliability Methods, which allows to adequately represent both aleatory and epistemic aspects of the uncertainty affecting the input through the use of probabilistic models, intervals, imprecise random variables as well as probability bounds. The uncertainty affecting the output is quantified in order to attest the significance of the results and provide a complete and effective tool for riskinformed decision making.
Additional file 1 of Unpacking the ‘process of sustaining’—identifying threats to sustainability and the strategies used to address them: a longitudinal multiple case study
Creators: name: Lennox, Laura
name: Antonacci, Grazia
name: Harris, Matthew
name: Reed, Julie
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1. Long Term Success Tool.
Scaling Effects in Spatial Multi-Criteria Decision Aggregation in Integrated River Basin Management
Creators: name: Taha, Rania
name: Dietrich, Jörg
name: Dehnhardt, Alexandra
name: Hirschfeld, Jesko
Publisher: name: Basel : MDPI
Year: 2019
Subjects: subject: testing
subject: co-simulation
subject: multi-agent systems
subject: Simulation planning
subject: Uncertainty quantification
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: For river basin management plans (RBMPs), measures are aggregated from smaller spatial units (e.g., water bodies) to the catchment or basin scale. River basin management plans measures in integrated management are evaluated using multiple criteria, e.g., ecological and socio-economiccriteria, etc. Therefore, aggregation often combines spatial analysis and multi-criteria decision analysis (MCDA). Herein, we investigate: (1) the effect of applying different aggregation pathways on the outcome of the RBMP using the technique for order of preference by similarity to ideal solution (TOPSIS) as an MCDA method, (2) the scaling effects considering water body, sub-catchment, and river basin scales, and (3) the effect of using global and local criteria weighing on the final ranking of alternatives. We propose two approaches to aggregate ranks for the entire basin: using non-dominated alternatives only and using a normalized TOPSIS relative closeness value. The results show no variation in the final non-dominated alternative for both aggregation pathways. However, we note rank reversal among the dominated alternatives. These results suggest that scaling effects need to be considered in spatial MCDA.
Decoherence-Free Entropic Gravity for Dirac Fermion
Creators: name: Sung, Eric J.
name: Campos, Andre G.
name: Abele, Hartmut
name: Bondar, Denys I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The theory of entropic gravity conjectures that gravity emerges thermodynamically rather than being a fundamental force. One of the main criticisms of entropic gravity is that it would lead to quantum massive particles losing coherence in free fall, which is not observed experimentally. This criticism was refuted in [Phys. Rev. Res. 3, 033065 (2021)], where a nonrelativistic master equation modeling gravity as an open quantum system interaction demonstrated that in the strong coupling limit, coherence could be maintained and reproduce conventional free-fall dynamics. Moreover, the nonrelativistic master equation was shown to be fully compatible with the qBounce experiment for ultracold neutrons. Motivated by this, we extend these results to gravitationally accelerating Dirac fermions. We achieve this by using the Dirac equation in Rindler space and modeling entropic gravity as a thermal bath thus adopting the open quantum systems approach as well. We demonstrate that in the strong coupling limit, our entropic gravity model maintains quantum coherence for Dirac fermions. In addition, we demonstrate that spin is not affected by entropic gravity. We use the Foldy-Wouthysen transformation to demonstrate that it reduces to the nonrelativistic master equation, supporting the entropic gravity hypothesis for Dirac fermions. Also, we demonstrate how antigravity seemingly arises from the Dirac equation for free-falling antiparticles but use numerical simulations to show that this phenomenon originates from zitterbewegung thus not violating the equivalence principle.
description: 23 pages and 3 figures (A note about the antigravity experiment [Nature 621, 716 (2023)] was added.)
Separation of Isotopologues in Ultra-High-Resolution Ion Mobility Spectrometry
Creators: name: Kirk, Ansgar T.
name: Raddatz, Christian-Robert
name: Zimmermann, Stefan
Publisher: name: Washington D.C. : American Chemical Society
Year: 2017
Subjects: subject: Ion Mobility Spectrometer
subject: IMS
subject: Isotopic Effects
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Ion mobility spectrometry provides ion separation in the gas phase mainly based on differing ion-neutral collision cross sections, enabling powerful analysis of many isomers. However, the separation also has a miniscule mass dependence due to the acceleration and collision properties. In this work, we show for the first time that using a compact ultra-high-resolution ion mobility spectrometer with a resolving power of 250 and an UV ionization source enables the separation of isotopologues with ion mobility spectrometry. This is demonstrated for regular and perdeuterated acetone, benzene, and toluene as well as toluene-13C7 in nitrogen and in purified air as drift gas. The observed peak shifts in the ion mobility spectrum agree with the basic ion mobility equation when using nitrogen as drift gas and also agree with a combination of this equation with Blanc’s law when using purified air as drift gas. For benzene and toluene, a reduction in the ion-neutral collision cross section of the isotopically replaced species is observed. Furthermore, a third peak formed from regular and perdeuterated acetone is observed, which can most likely be attributed to the exchange of a methyl group.
Additional file 2 of Unpacking the ‘process of sustaining’—identifying threats to sustainability and the strategies used to address them: a longitudinal multiple case study
Creators: name: Lennox, Laura
name: Antonacci, Grazia
name: Harris, Matthew
name: Reed, Julie
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 2: Table 1. Observation log. Table 2. Documents. Table 3. Interview and focus group participant list.
On the Classification of Extremal Doubly Even Self-Dual Codes with 2-Transitive Automorphism Group
Creators: name: Chigira, Naoki
name: Harada, Masaaki
name: Kitazume, Masaaki
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Information Theory (cs.IT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 94B05, 20B25

description: In this note, we complete the classification of extremal doubly even self-dual codes with 2-transitive automorphism groups.
description: 4 pages, minor revision, Designs, Codes and Cryptography (to appear)
title: Implementation and Analysis of True Lean in a Startup Company by Using PCDA Model, a Case Study in a Manufacturing Venture
Creators: name: Jangid, Ankit
Publisher: name: University of Kentucky Libraries
Year: 2019

description: The purpose of this research is to implement and analyze the true lean transformation in a manufacturing start-up organization. Often, lean transformations are observed in developed manufacturing organizations having sophisticated production lines and numerous employees, where lean tools are utilized to reduce waste while increasing profit. However, this type of transformation is narrowly focused on quantifiable process results and falls short of the ultimate goal, establishing a true lean culture within the organization. As a result, it is recommended that true lean principles, philosophies, culture, operations environment and tools be applied at the very beginning stages of an organization, or during the start-up phase to embed true lean thinking and application in the entirety of the organization. In this analysis, a case study is performed on a team embarking on a start-up manufacturing enterprise. The team is trained on true lean and all the four aspects of true lean are applied for successfully implementing true lean in the start-up. In addition, a true lean implementation approach was generated and applied using PDCA (plan, do, check and act) model. The results of this case study are presented in this work.
description: Copyright © Ankit Jangid 2019
Coupling of acoustic phonon to a spin-orbit entangled pseudospin
Creators: name: Yip, S. -K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider coupling of acoustic phonon to pseudospins consisting of electronic spins locked to orbital angular momentum states. We show that a Berry phase term arises from projection onto the time-dependent lowest energy manifold. We examine consequences on the phonon modes, in particular mode splitting, induced chirality and Berry curvatures under an external magnetic field which Zeeman couples to the pseudospin.
description: 11 pages, 1 figure
Realistic and expressive talking head : implementation and evaluation
Creators: name: Liu, Kang
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Talking head
subject: image-based animation
subject: unit selection
subject: Pareto optimization
subject: facial expression
subject: head motion
subject: optical flow
subject: morphing
subject: Gesichtsanimation
subject: bildbasierte Animation
subject: Auswahl des Mundes
subject: Pareto-Optimierung
subject: Gesichtsausdruck
subject: Kopfbewegung
subject: optischer Fluss
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
Structure and radial equilibrium of filamentary molecular clouds
Creators: name: Contreras, Yanett
name: Rathborne, Jill
name: Garay, Guido
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent dust continuum surveys have shown that filamentary structures are ubiquitous along the Galactic plane. While the study of their global properties has gained momentum recently, we are still far from fully understanding their origin and stability. Theories invoking magnetic field have been formulated to help explain the stability of filaments; however, observations are needed to test their predictions. In this paper, we investigate the structure and radial equilibrium of five filamentary molecular clouds with the aim of determining the role that magnetic field may play. To do this, we use continuum and molecular line observations to obtain their physical properties (e.g. mass, temperature and pressure). We find that the filaments have lower lineal masses compared to their lineal virial masses. Their virial parameters and shape of their dust continuum emission suggests that these filaments may be confined by a toroidal dominated magnetic field.
Implications for the Supermassive Black Hole Binaries from the NANOGrav 15-year Data Set
Creators: name: Bi, Yan-Chen
name: Wu, Yu-Mei
name: Chen, Zu-Cheng
name: Huang, Qing-Guo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: NANOGrav, EPTA, PPTA, and CPTA have announced the evidence for a stochastic signal from their latest data sets. Supermassive black hole binaries (SMBHBs) are supposed to be the most promising gravitational-wave (GW) sources of pulsar timing arrays. Assuming an astro-informed formation model, we use the NANOGrav 15-year data set to constrain the gravitational wave background (GWB) from SMBHBs. Our results prefer a large turn-over eccentricity of the SMBHB orbit when GWs begin to dominate the SMBHBs evolution. Furthermore, the GWB spectrum is extrapolated to the space-borne GW detector frequency band by including inspiral-merge-cutoff phases of SMBHBs and should be detected by LISA, Taiji and TianQin in the near future.
description: 8 pages, 3 figures, 3 tables; version accepted for publication in SCPMA
Additional file 3 of Unpacking the ‘process of sustaining’—identifying threats to sustainability and the strategies used to address them: a longitudinal multiple case study
Creators: name: Lennox, Laura
name: Antonacci, Grazia
name: Harris, Matthew
name: Reed, Julie
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 3. Interview Guides.
Isolating Prompt Photons with Narrow Cones
Creators: name: Catani, Stefano
name: Fontannaz, Michel
name: Guillet, Jean-Philippe
name: Pilon, Eric
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the isolation of prompt photons in hadronic collisions by means of narrow isolation cones and the QCD computation of the corresponding cross sections. We reconsider the occurence of large perturbative terms with logarithmic dependence on the cone size and their impact on the fragmentation scale dependence. We cure the apparent perturbative violation of unitarity for small cone sizes, which had been noticed earlier in next-to-leading-order (NLO) calculations, by resumming the leading logarithmic dependence on the cone size. We discuss possible implications regarding the implementation of some hollow cone variants of the cone criterion, which simulate the experimental difficulty to impose isolation inside the region filled by the electromagnetic shower that develops in the calorimeter.
description: 19 pages, 2 figures, 4 tables
Separating the two polarities of the POLO contacts of an 26.1%-efficient IBC solar cell
Creators: name: Hollemann, C.
name: Haase, F.
name: Rienäcker, M.
name: Barnscheidt, V.
name: Krügener, J.
name: Folchert, N.
name: Brendel, R.
name: Richter, S.
name: Großer, S.
name: Sauter, E.
name: Hübner, J.
name: Oestreich, Michael
name: Peibst, R.
Publisher: name: Berlin : Springer Nature
Year: 2020
Subjects: subject: solar cell
subject: poly-Si
subject: recombination
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: By applying an interdigitated back contacted solar cell concept with poly-Si on oxide passivating contacts an efficiency of 26.1% was achieved recently. In this paper the impact of the implemented initially intrinsic poly-Si region between p-type poly-Si and n-type poly-Si regions is investigated. Two recombination paths are identified: The recombination at the interface between the initially intrinsic poly-Si and the wafer as well as the recombination across the resulting p(i)n diode on the rear side which is aimed to be reduced by introducing an initially intrinsic region. By using test structures, it is demonstrated that the width of the initially intrinsic region ((i) poly-Si region) has a strong influence on the recombination current through the p(i)n diode and that this initially intrinsic region needs to be about 30 μm wide to sufficiently reduce the recombination across the p(i)n diode. Lateral and depth-resolved time of flight secondary ion mass spectrometry analysis shows that the high-temperature annealing step causes a strong lateral inter-diffusion of donor and acceptor atoms into the initially intrinsic region. This diffusion has a positive impact on the passivation quality at the c-Si/SiOx/i poly-Si interface and is thus essential for achieving an independently confirmed efficiency of 26.1% with 30 μm-wide initially intrinsic poly-Si regions.
On the quantum-field description of many-particle Fermi systems with spontaneously broken symmetry
Creators: name: Poluektov, Yu. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A quantum-field approach for describing many-particle Fermi systems at finite temperatures and with spontaneously broken symmetry has been proposed. A generalized model of self-consistent field (SCF), which allows one to describe the states eligible for this system with various symmetries, is used as the initial approximation. A perturbation theory has been developed, and a diagram technique for temperature Green's functions (GFs) has been constructed. The Dyson's equation for the self-energy and vertex parts has been deduced.
description: 11 pages, 2 figures
title: Investigating the Use of In-Place Lateral Pull Off Tests to Determine the Compressive Strength of Structural Concrete
Creators: name: Sun, Charlie
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2019

description: The Kentucky Transportation Cabinet’s current practice for determining the compressive strength of structural concrete consists of two methods. Both methods require that samples be delivered to an off-site facility for testing. Accordingly, affected parties on the project site must wait for the delivery of samples to the off-site facility, the performance of tests and analysis of test data, and the return of test results to the project site. Analysis of existing structural concrete requires core samples to be taken from the structural element in question. As a result, sample locations must be patched and repaired. Sampling can also potentially damage an element’s structural integrity. A quick, on-site method that requires minimal repair is needed to determine the compressive strength of concrete. The lateral pull off test, which is conceptually and methodologically similar to the pull off/pull out test, can be used to determine the compressive strength of in-place concrete. It appears to be an accurate, non-destructive, and reliable method. This method also requires minimal patch work at sample locations. Samples are easily obtained and the test results are quickly determined on-site. Two series of tests — a laboratory test on freshly poured concrete slabs and an in-situ test on ready-to-demolish old bridges — were carried out. Both series of tests run the compressive strength cylindrical concrete test and lateral pull off test simultaneously to validate lateral pull off test as an acceptable and dependable method of determining concrete compressive strength. The test procedure and results look very promising based on the project’s objective.
description: Copyright:
© 2018 University of Kentucky, Kentucky Transportation Center
Quantum metrology with squeezed and entangled light for the detection of gravitational waves
Creators: name: Steinlechner, Sebastian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Gravitational wave detection
subject: sqeezed light
subject: entanglement
subject: Sagnac interferometer
subject: quantum-dense metrology
subject: signal recycling
subject: Gravitationswellendetektion
subject: gequetschtes Licht
subject: Verschränkung
subject: quantendichte Metrologie
subject: Signalrecycling
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Tully-Fisher analysis of the multiple cluster system Abell 901/902
Creators: name: Bösch, Benjamin
name: Böhm, Asmus
name: Wolf, Christian
name: Aragón-Salamanca, Alfonso
name: Ziegler, Bodo L.
name: Barden, Marco
name: Gray, Meghan E.
name: Balogh, Michael
name: Meisenheimer, Klaus
name: Schindler, Sabine
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We derive rotation curves from optical emission lines of 182 disk galaxies (96 in the cluster and 86 in the field) in the region of Abell 901/902 located at $z\sim 0.165$. We focus on the analysis of B-band and stellar-mass Tully-Fisher relations. We examine possible environmental dependencies and differences between normal spirals and "dusty red" galaxies, i.e. disk galaxies that have red colors due to relatively low star formation rates. We find no significant differences between the best-fit TF slope of cluster and field galaxies. At fixed slope, the field population with high-quality rotation curves (57 objects) is brighter by $ΔM_{B}=-0\fm42\pm0\fm15$ than the cluster population (55 objects). We show that this slight difference is at least in part an environmental effect. The scatter of the cluster TFR increases for galaxies closer to the core region, also indicating an environmental effect. Interestingly, dusty red galaxies become fainter towards the core at given rotation velocity (i.e. total mass). This indicates that the star formation in these galaxies is in the process of being quenched. The luminosities of normal spiral galaxies are slightly higher at fixed rotation velocity for smaller cluster-centric radii. Probably these galaxies are gas-rich (compared to the dusty red population) and the onset of ram-pressure stripping increases their star-formation rates. The results from the TF analysis are consistent with and complement our previous findings. Dusty red galaxies might be an intermediate stage in the transformation of infalling field spiral galaxies into cluster S0s, and this might explain the well-known increase of the S0 fraction in galaxy clusters with cosmic time.
description: Accepted for publication in Astronomy and Astrophysics; 16 pages, 14 figures
Notes on weight-shifting operators and unifying relations for cosmological correlators
Creators: name: Chen, Qi
name: Tao, Yi-Xiao
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We seek the inverse formulas for the cosmological unifying relation between gluons and conformally coupled scalars. We demonstrate that the weight-shifting operators derived from the conformal symmetry at the dS late-time boundary can serve as the inverse operators for the 3-point cosmological correlators. However, in the case of the 4-point cosmological correlator, we observe that the inverse of the unifying relation cannot be constructed from the weight-shifting operators. Despite this failure, we are inspired to propose a "weight-shifting uplifting" method for the 4-point gluon correlator.
description: published version
Realization of finite-size quantum key distribution based on Einstein-Podolsky-Rosen entangled light
Creators: name: Eberle, Tobias
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Quantum key distribution
subject: continuous variables
subject: Einstein-Podolsky-Rosen entanglement
subject: two-mode squeezed states
subject: coherent attacks
subject: collective attacks
subject: Quantenschlüsselverteilung
subject: kontinuierliche Variablen
subject: Einstein-Podolsky-Rosen Verschränkung
subject: zwei-moden gequetschte Zustände
subject: kohärente Attacken
subject: kollektive Attacken
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
A Comment on Continuous Spin Representations of the Poincaré Group and Perturbative String Theory
Creators: name: Font, Anamaria
name: Quevedo, Fernando
name: Theisen, Stefan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We make a simple observation that the massless continuous spin representations of the Poincaré group are not present in perturbative string theory constructions. This represents one of the very few model-independent low-energy consequences of these models.
description: 8 pages
Orlando Rod Puppet
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2016
Subjects: Roland (Legendary character)
Knights and knighthood

description: Sicilian rod puppet operated from above. Face, hands, feet of painted wood or plaster. Armor, shield, sword, scabbard of unpainted tin. Skirt of off-white muslin with metallic tape trim. Tin bird atop helmet. Cross-eyed.  Scholar suggests Palermo.
High Visibility Two-photon Interference with Classical Light
Creators: name: Hong, Peilong
name: Xu, Lei
name: Zhai, Zhaohui
name: Zhang, Guoquan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two-photon interference with independent classical sources, in which superposition of two indistinguishable two-photon paths plays a key role, is of limited visibility of interference fringes with a maximum value of 50%. By using a random-phase grating to modulate the wavefront of a coherent light, we introduce superposition of multiple indistinguishable two-photon paths, which enhances the two-photon interference effect with a signature of visibility exceeding 50%. The result shows the importance of phase control in the control of high-order coherence of classical light.
description: 6 pages, 5 figures
Raman interferometry with free-falling and trapped atoms
Creators: name: Tackmann, Gunnar
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Atom interferometry
subject: Raman transition
subject: Sagnac effect
subject: gyroscope
subject: short range forces
subject: optical lattices
subject: Interférométrie atomique
subject: transition Raman
subject: effect Sagnac
subject: gyromètre
subject: forces à faible distance
subject: réseaux optiques
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Compositionality in Model-Based Testing
Creators: name: van Cuyck, Gijs
name: van Arragon, Lars
name: Tretmans, Jan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.5

description: Model-based testing (MBT) promises a scalable solution to testing large systems, if a model is available. Creating these models for large systems, however, has proven to be difficult. Composing larger models from smaller ones could solve this, but our current MBT conformance relation $\textbf{uioco}$ is not compositional, i.e. correctly tested components, when composed into a system, can still lead to a faulty system. To catch these integration problems, we introduce a new relation over component models called $\textbf{mutual acceptance}$. Mutually accepting components are guaranteed to communicate correctly, which makes MBT compositional. In addition to providing compositionality, mutual acceptance has benefits when retesting systems with updated components, and when diagnosing systems consisting of components.
description: To be published in ICTSS 2023 conference proceedings
Additional file 1 of Evaluation of a Point-of-care ultrasound (POCUS) workshop for peripheral intravenous cannulation
Creators: name: Steinwandel, Ulrich
name: Coventry, Linda L.
name: Kheirkhah, Homa
Publisher: name: figshare
Year: 2023
Subjects: Space Science
Medicine
Neuroscience
Developmental Biology

description: Additional file 1. Qualtrics Survey Before ultrasound workshop.pdf
The Tunneling Potential Approach to Q-Balls
Creators: name: Espinosa, José Ramon
name: Heeck, Julian
name: Sokhashvili, Mikheil
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Q-balls are bound-state configurations of complex scalars stabilized by a conserved Noether charge Q. They are solutions to a second-order differential equation that is structurally identical to Euclidean vacuum-decay bounce solutions in three dimensions. This enables us to translate the recent tunneling potential approach to Q-balls, which amounts to a reformulation of the problem that can simplify the task of finding approximate and even exact Q-ball solutions.
description: 16 pages; fixed typo in Eq. (56)
Rekombinante Produktion der fibrinogen gamma chain (FGG)
Creators: name: Grünert, Sabrina
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: fibrinogen gamma chain (fgg)
subject: recombinant protein production
subject: protein purification
subject: Fibrinogen
subject: Fibrinogen Gamma Kette (FGG)
subject: rekombinante Proteinproduktion
subject: Escherichia coli
subject: Komagataella phaffii
subject: Proteinaufreinigung
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Die Fibrinogen-γ-Kette (FGG) ist eine von drei Proteinketten, welche am Aufbau des Blutgerinnungsproteins Fibrinogen beteiligt sind. FGG zeichnet sich durch wichtige biologische Funktionen, wie die Bindung von verschiedenen Zelltypen, Wachstums- und Koagulationsfaktoren aus. Ziel der Arbeit ist es FGG als neues innovatives Fibrin-basiertes Biomaterial rekombinant herzustellen, um es als Grundgerüst für Blutgefäßprothesen oder auch als Beschichtungsmaterial in der Zellkultur einzusetzen. Für die Herstellung eines Produktionsstammes wurde die Gensequenz der humanen Fibrinogen-γA-Kette codonoptimiert, synthetisiert und in den Stamm SMD1168 der methylotrophen Hefe Komagataella phaffii eingebracht. Nach Screening von über 200 Klonen konnte jedoch weder im Kulturüberstand noch im Zelllysat FGG nachgewiesen werden. Durch das Einbringen der für Escherichia coli optimierten Gensequenz konnte hingegen ein Produktionsstamm generiert werden, welcher FGG als unlösliches Protein in inclusion bodies bildete. Durch Koproduktion von Chaperonen, konnte in geringen Mengen lösliches Protein produziert werden. Da die Zellen aber zu gestresst waren und im Vergleich immer deutlich mehr unlösliches Protein gebildet wurde, erfolgte die Aufarbeitung des FGGs aus inclusion bodies. Durch einen milden Solubilisierungsprozess mit 3 M Urea konnte FGG in Lösung und durch ein On-colum Refolding in einen stabilen löslichen Zustand ohne Urea gebracht werden. Mittels Zelladhäsionsassays konnte gezeigt werden, dass das Protein bioaktiv war. In einem Design of experiments mit Box-Behnken-Design wurden optimale Produktionsbedingungen ermittelt. Durch Übertragung der Bedingungen in den 2L-Rührkesselreaktor konnten 251,48 mg/L rekombinantes FGG produziert werden.