cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Blazars spectral properties at 74 MHz
Creators: name: Massaro, F.
name: Giroletti, M.
name: Paggi, A.
name: D'Abrusco, R.
name: Tosti, G.
name: Funk, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Blazars are the most extreme class of active galactic nuclei (AGNs). Despite a previous investigation at 102 MHz for a small sample of BL Lacs and our recent analysis of blazars detected in the Westerbork Northern Sky Survey (WENSS), a systematic study of the blazar spectral properties at frequencies below 100 MHz has been never carried out. In this paper, we present the first analysis of the radio spectral behavior of blazars based on the recent Very Large Array Low-Frequency Sky Survey (VLSS) at 74 MHz. We search for blazar counterparts in the VLSS catalog confirming that they are detected at 74 MHz. We then show that blazars present radio flat spectra {(i.e., radio spectral indices ~0.5)} when evaluated also about an order of magnitude in frequency lower than previous analyses. Finally, we discuss the implications of our findings in the context of the blazars - radio galaxies connection since the low frequency radio data provide a new diagnostic tool to verify the expectations of the unification scenario for radio-loud active galaxies.
description: 8 pages, 12 figures, 1 table, ApJS accepted (version pre-proof corrections)
Supplementary Methods, Tables and Figures from The genetic basis for the evolution of soma: mechanistic evidence for the co-option of a stress-induced gene into a developmental master regulator
Creators: name: König, Stephan G.
name: Nedelcu, Aurora M.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Developmental Biology

description: Detailed experimental methodology, table of primers, and additional data/figures
The Hartree equation for infinitely many particles. II. Dispersion and scattering in 2D
Creators: name: Lewin, Mathieu
name: Sabin, Julien
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider the nonlinear Hartree equation for an interacting gas containing infinitely many particles and we investigate the large-time stability of the stationary states of the form $f(-Δ)$, describing an homogeneous Fermi gas. Under suitable assumptions on the interaction potential and on the momentum distribution $f$, we prove that the stationary state is asymptotically stable in dimension 2. More precisely, for any initial datum which is a small perturbation of $f(-Δ)$ in a Schatten space, the system weakly converges to the stationary state for large times.
Non-reciprocal Oersted field contribution to the current-induced frequency shift of magnetostatic surface waves
Creators: name: Haidar, Mohammad
name: Bailleul, Matthieu
name: Kostylev, Mikhail
name: Lao, Yuyan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The influence of an electrical current on the propagation of magnetostatic surface waves is investigated in a relatively thick (40 nm) permalloy film both experimentally and theoretically. Contrary to previously studied thinner films where the dominating effect is the current-induced spin-wave Doppler shift, the magnetic field generated by the current (Oersted field) is found to induce a strong non-reciprocal frequency shift which overcompensates the Doppler shift. The measured current induced frequency shift is in agreement with the developed theory. The theory relates the sign of of the frequency shift to the spin wave modal profiles. The good agreement between the experiment and the theory confirms a recent prediction of a counter-intuitive mode localization for magnetostatic surface waves in the dipole-exchange regime.
description: Submitted to Phys. Rev. B
Les couleurs en bande dessinnée? L’«Exposition des couleurs» de Jean Robertet
Creators: name: Crosio, Martina
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
Variable-step finite difference schemes for the solution of Sturm-Liouville problems
Creators: name: Amodio, Pierluigi
name: Settanni, Giuseppina
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L15, 65L12, 65F15

description: We discuss the solution of regular and singular Sturm-Liouville problems by means of High Order Finite Difference Schemes. We describe a code to define a discrete problem and its numerical solution by means of linear algebra techniques. Different test problems are proposed to emphasize the behaviour of the proposed algorithm.
Detection and Calibration of Low-Energy Nuclear Recoils for Dark Matter and Neutrino Scattering Experiments
Creators: name: Xu, Jingke
name: Barbeau, P. S.
name: Hong, Ziqing
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Detection of low-energy nuclear recoil events plays a central role in searches for particle dark matter interactions with atomic matter and studies of coherent neutrino scatters. Precise nuclear recoil calibration data allow the responses of these dark matter and neutrino detectors to be characterized and enable in situ evaluation of an experiment's sensitivity to anticipated signals. This article reviews the common methods for detection of nuclear recoil events and the wide variety of techniques that have been developed to calibrate detector response to nuclear recoils. We summarize the main experimental factors that are critical for accurate nuclear recoil calibrations, investigate mitigation strategies for different backgrounds and biases, and discuss how the presentation of calibration results can facilitate comparison between experiments. Lastly, we discuss the challenges for future nuclear recoil calibration efforts and the physics opportunities they may enable.
description: 25 pages, 4 figures
A First Course in Fractional Sobolev Spaces
Creators: name: Leoni, Giovanni
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 26A33, 30H25, 35R11, 46E35

description: This book provides a gentle introduction to fractional Sobolev spaces, which play a central role in the calculus of variations, partial differential equations, and harmonic analysis. The first part deals with fractional Sobolev spaces of one variable. It covers the definition, standard properties, extensions, embeddings, Hardy inequalities, and interpolation inequalities. The second part deals with fractional Sobolev spaces of several variables. The author studies completeness, density, homogeneous fractional Sobolev spaces, embeddings, necessary and sufficient conditions for extensions, Gagliardo-Nirenberg type interpolation inequalities, and trace theory. The third part explores some applications: interior regularity for the Poisson problem with the right-hand side in a fractional Sobolev space and some basic properties of the fractional Laplacian. The first part of the book is accessible to advanced undergraduates with a strong background in integration theory; the second part to graduate students having familiarity with measure and integration and some functional analysis. Basic knowledge of Sobolev spaces would help, but is not necessary. The book can also serve as a reference for mathematicians working in the calculus of variations and partial differential equations as well as for researchers in other disciplines with a solid mathematics background. It contains several exercises and is self-contained.
description: https://bookstore.ams.org/gsm-229
Colori e colores a Varlungo («Decameron» VIII 2)
Creators: name: Zampese, Cristina
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
Il «De mulieribus claris» di Boccaccio e i giochi dell'invenzione narrativa
Creators: name: Cazalé Bérard, Claude
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
Cromatica decameroniana
Creators: name: D'Agostino, Alfonso
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
PERFORMANCE ANALYSIS OF SOLAR WATER HEATER SYSTEM WITH HEAT PIPE EVACUATED TUBE COLLECTOR ON MOHA SOFT DRINK INDUSTRIES IN ETHIOPIA
Creators: name: MESAY SIYOUM
Publisher: name: Zenodo
Year: 2020

description: Hot water is a crucial demand for many of Ethiopia’s industrial and household heating systems. Most industries are using boilers powered by conventional energy sources to meet the demand for hot water. Due to environmental impact of conventional energy sources usage and the rise in fossil fuel prices, utilization of solar energies as a source of energy become a promising candidate for various applications.

The MATLAB/SIMULINK software was introduced to study the technical and economic viability the solar water heating system with heat pipe evacuated tube collector. The monthly, seasonal and annual optimum tilt angles were estimated for the selected sites. Comparisons of total solar radiations were made at various optimum tilt angles for the selected locations. The estimated annual optimum tilt angles are 15o, 15.6o and 14o for Addis Ababa, Dire Dewa and Hawassa cities, respectively
I colori delle passioni nella narrativa dei primi secoli
Creators: name: Bragantini, Renzo
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
METABOLATOR: Establishing a Citable Web Application for Automated Metabolic Load Analysis
Creators: name: Pape, David
name: Lokamani, Mani
name: Seal, Ayush
name: Knodel, Oliver
name: Kelling, Jeffrey
name: Fahmy, Karim
name: Juckeland, Guido
Publisher: name: Zenodo
Year: 2024
Subjects: research software engineering
RSE
metabolic load
microcalorimetry
curve fitting
data science
FAIR
FAIR4RS

description: METABOLATOR is a web application for automated analysis of microcalorimetric metabolic data using Monod's equation. The software was developed in collaboration between the Institute of Resource Ecology and the Department of Information Services and Computing at Helmholtz-Zentrum Dresden - Rossendorf (HZDR), and is now offered as a web service for the community. In addition to publishing the software under an open source license, we made the service, which is hosted on HZDR infrastructure, citable by registering its metadata with DataCite and minting a dedicated Digital Object Identifier (DOI). On our poster, we will present the results of our collaboration from the point of view of a Research Software Engineer (RSE). We will introduce the METABOLATOR software, and discuss its development from initial trials into an installable package and web service. Moreover, we will debate the importance of persistent identifiers (PIDs) for reproducible, citable, and overall FAIR data analysis workflows.
Automated crack propagation measurement on asphalt concrete specimens using an optical flow-based deep neural network
Creators: name: Zhu, Zehui
name: Al-Qadi, Imad L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This article proposes a deep neural network, namely CrackPropNet, to measure crack propagation on asphalt concrete (AC) specimens. It offers an accurate, flexible, efficient, and low-cost solution for crack propagation measurement using images collected during cracking tests. CrackPropNet significantly differs from traditional deep learning networks, as it involves learning to locate displacement field discontinuities by matching features at various locations in the reference and deformed images. An image library representing the diversified cracking behavior of AC was developed for supervised training. CrackPropNet achieved an optimal dataset scale F-1 of 0.755 and optimal image scale F-1 of 0.781 on the testing dataset at a running speed of 26 frame-per-second. Experiments demonstrated that low to medium-level Gaussian noises had a limited impact on the measurement accuracy of CrackPropNet. Moreover, the model showed promising generalization on fundamentally different images. As a crack measurement technique, the CrackPropNet can detect complex crack patterns accurately and efficiently in AC cracking tests. It can be applied to characterize the cracking phenomenon, evaluate AC cracking potential, validate test protocols, and verify theoretical models.
Nonlinear thermovoltage and thermocurrent in quantum dots
Creators: name: Svensson, Sofia Fahlvik
name: Hoffmann, Eric A
name: Nakpathomkun, Natthapon
name: Wu, Phillip M
name: Xu, Hongqi
name: Nilsson, Henrik A
name: Sánchez, David
name: Kashcheyevs, Vyacheslavs
name: Linke, Heiner
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantum dots are model systems for quantum thermoelectric behavior because of the ability to control and measure the effects of electron-energy filtering and quantum confinement on thermoelectric properties. Interestingly, nonlinear thermoelectric properties of such small systems can modify the efficiency of thermoelectric power conversion. Using quantum dots embedded in semiconductor nanowires, we measure thermovoltage and thermocurrent that are strongly nonlinear in the applied thermal bias. We show that most of the observed nonlinear effects can be understood in terms of a renormalization of the quantum-dot energy levels as a function of applied thermal bias and provide a theoretical model of the nonlinear thermovoltage taking renormalization into account. Furthermore, we propose a theory that explains a possible source of the observed, pronounced renormalization effect by the melting of Kondo correlations in the mixed-valence regime. The ability to control nonlinear thermoelectric behavior expands the range in which quantum thermoelectric effects may be used for efficient energy conversion.
description: 14 pages, 5 figures
Life cycle management of automotive data functions in MEC infrastructures
Creators: name: Seron, Mikel
name: Martin, Angel
name: Velez, Gorka
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Cars capture and generate huge volumes of data in real-time, including the driving dynamics, the environment, and the driver and passengers' activities. With the proliferation of Connected and Automated Mobility (CAM) applications, the value of vehicle data is getting higher for the automotive industry as it is not limited to onboard systems and services. This paper proposes an architecture that exploits Multi-access Edge Computing (MEC) technology of 5G networks to enable data monetisation. It employs a virtualisation framework that instantiates on consumer demand pipelines that process data samples according to Service Level Agreement (SLA) policies, licensing terms and Region Of Interest (ROI) clusters with a privacy-centric design. In addition, the aspects that need to be considered when creating a data marketplace for the automotive sector are identified while highlighting the design features that go beyond the current scientific and market solutions.
The curiously circular orbit of Kepler-16b
Creators: name: Dunhill, Alex
name: Alexander, Richard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The recent discovery of a number of circumbinary planets lends a new tool to astrophysicists seeking to understand how and where planet formation takes place. Of the increasingly numerous circumbinary systems, Kepler-16 is arguably the most dynamically interesting: it consists of a planet on an almost perfectly circular orbit (e = 0.0069) around a moderately eccentric binary (e = 0.16). We present high-resolution 3D smoothed-particle hydrodynamics simulations of a Kepler-16 analogue embedded in a circumbinary disc, and show that the planet's eccentricity is damped by its interaction with the protoplanetary disc. We use this to place a lower limit on the gas surface density in the real disc through which Kepler-16b migrated of Σ_min ~ 10 g cm^-2. This suggests that Kepler-16b, and other circumbinary planets, formed and migrated in relatively massive discs. We argue that secular evolution of circumbinary discs requires that these planets likely formed early on in the lifetime of the disc and migrated inwards before the disc lost a significant amount of its original mass.
description: 7 pages, 6 figures. Accepted for publication in MNRAS. Movies of the simulations can be found at: http://www.astro.le.ac.uk/~acd23/K16.html
Vanquishing volumetric locking in quadratic NURBS-based discretizations of nearly-incompressible linear elasticity: CAS elements
Creators: name: Casquero, Hugo
name: Golestanian, Mahmoud
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Quadratic NURBS-based discretizations of the Galerkin method suffer from volumetric locking when applied to nearly-incompressible linear elasticity. Volumetric locking causes not only smaller displacements than expected, but also large-amplitude spurious oscillations of normal stresses. Continuous-assumed-strain (CAS) elements have been recently introduced to remove membrane locking in quadratic NURBS-based discretizations of linear plane curved Kirchhoff rods (Casquero et al., CMAME, 2022). In this work, we propose two generalizations of CAS elements (named CAS1 and CAS2 elements) to overcome volumetric locking in quadratic NURBS-based discretizations of nearly-incompressible linear elasticity. CAS1 elements linearly interpolate the strains at the knots in each direction for the term in the variational form involving the first Lamé parameter while CAS2 elements linearly interpolate the dilatational strains at the knots in each direction. For both element types, a displacement vector with C1 continuity across element boundaries results in assumed strains with C0 continuity across element boundaries. In addition, the implementation of the two locking treatments proposed in this work does not require any additional global or element matrix operations such as matrix inversions or matrix multiplications. The locking treatments are applied at the element level and the nonzero pattern of the global stiffness matrix is preserved. The numerical examples solved in this work show that CAS1 and CAS2 elements, using either two or three Gauss-Legrendre quadrature points per direction, are effective locking treatments since they not only result in more accurate displacements for coarse meshes, but also remove the spurious oscillations of normal stresses.
description: arXiv admin note: text overlap with arXiv:2311.00101
The Impacts of Deregulation of the Electricity Markets: A Comparative Study of International and Local Case Studies
Creators: name: De Silva, L. Raveen S.
name: Weerasekara, Hirushi
name: V. Dias, M.Sandaru
name: Siyambalapitiya, Tharaka
Publisher: name: figshare
Year: 2023
Subjects: Electrical energy generation (incl. renewables, excl. photovoltaics)
Electrical energy transmission, networks and systems

description: The Energy sector plays a crucial role in promoting economic development and sustainability, and energy reforms are vital for achieving a sustainable economic growth. Within the energy sector, the electricity sector holds significant importance, and reforms in this sector can have considerable impacts on the broader economy of a country. This research paper aims to evaluate the impact of energy reforms on the electricity sector, specifically focusing on policies that promote competition, innovation, and technological advancements. Through a com- parative analysis of international and local case studies from the USA, Ethiopia, Nigeria, India, Singapore, and Sri Lanka, this paper assesses the micro and macroeconomic effects of energy reforms on power pricing, power markets, electricity accessibility, innovation, and competitiveness. The historical de- velopment of state-owned electricity monopolies and their impact on competition, innovation, technological advancements, pricing, and service quality in the electricity sector is also examined. Furthermore, the study analyzes the role of government over- sight and regulations in managing state-owned monopolies to ensure fair market practices. This research paper contributes to a more nuanced understanding of the complex relationship between state ownership and market competition in the energy sector. The findings of this study can inform policymakers and stakeholders in Sri Lanka and other developing countries on the potential benefits and drawbacks of expanding state-owned electricity monopolies in the context of ongoing energy sector reforms. Overall, this study provides insights for designing and implementing effective energy policies that promote sustainable economic growth and development.
Hidden Lorentz symmetry of the Horava - Lifshitz gravity
Creators: name: Rembielinski, Jakub
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this letter it is shown that the Horava-Lifshitz gravity theory admits Lorentz symmetry preserving preferred global time foliation of the spacetime.
Three-body forces from a classical nonlinear field
Creators: name: Arodz, H.
name: Karkowski, J.
name: Swierczynski, Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Forces in the systems of two opposite sign and three identical charges coupled to the dynamical scalar field of the signum-Gordon model are investigated. Three-body force is present, and the exact formula for it is found. Flipping the sign of one of the two charges changes not only the sign but also the magnitude of the force. Both effects are due to nonlinearity of the field equation.
description: 12 pages, 2 figures
Molecular dynamics simulation of chains mobility in polyethylene crystal
Creators: name: Sultanov, V. I.
name: Atrazhev, V. V.
name: Dmitriev, D. V.
name: Burlatsky, S. F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The mobility of polymer chains in perfect polyethylene (PE) crystal was calculated as a function of temperature and chain length through Molecular dynamics (MD) in united atom approximation. The results demonstrate that the chain mobility drastically increases in the vicinity of the phase transition from the orthorhombic to quasi-hexagonal phase. In the quasi-hexagonal phase, the chain mobility is almost independent on temperature and inversely proportional to the chain length.
description: 5 pages, 6 figures
Tinte addosso. Cromatismi comici nei fabliaux
Creators: name: Sacchi, Luca
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
Presentazione
Creators: name: Sacchi, Luca
name: Zampese, Cristina
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
I colori del meraviglioso in Marie de France
Creators: name: Barbiellini Amidei, Beatrice
Publisher: name: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento
Year: 2020

description: -
description: Carte Romanze. Rivista di Filologia e Linguistica Romanze dalle Origini al Rinascimento, I colori del racconto (Biblioteca di Carte Romanze, 10)
The Epoch of Assembly of Two Galaxy Groups: A comparative study
Creators: name: Nichols, Matthew
name: Bland-Hawthorn, Joss
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Nearby galaxy groups of comparable mass to the Local Group show global variations that reflect differences in their evolutionary history. Satellite galaxies in groups have higher levels of gas deficiency as the distance to their host decreases. The well established gas deficiency profile of the Local Group reflects an epoch of assembly starting at z<10. We investigate whether this gas deficiency profile can be used to determine the epoch of assembly for other nearby groups. We choose the M81 group as this has the most complete inventory, both in terms of membership and multi-wavelength observations. We expand our earlier evolutionary model of satellite dwarf galaxies to not only confirm this result for the Local Group but show that the more gas-rich M81 group is likely to have assembled at a later time (z<1-3).
description: ApJ accepted. 12 pages, 7 figures
An Exoplanet's Response to Anisotropic Stellar Mass-Loss During Birth and Death
Creators: name: Veras, Dimitri
name: Hadjidemetriou, John D.
name: Tout, Christopher A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The birth and death of planets may be affected by mass outflows from their parent stars during the T-Tauri or post-main-sequence phases of stellar evolution. These outflows are often modelled to be isotropic, but this assumption is not realistic for fast rotators, bipolar jets and supernovae. Here we derive the general equations of motion for the time evolution of a single planet, brown dwarf, comet or asteroid perturbed by anisotropic mass loss in terms of a complete set of planetary orbital elements, the ejecta velocity, and the parent star's co-latitude and longitude. We restrict our application of these equations to 1) rapidly rotating giant stars, and 2) arbitrarily-directed jet outflows. We conclude that the isotropic mass-loss assumption can safely be used to model planetary motion during giant branch phases of stellar evolution within distances of hundreds of au. In fact, latitudinal mass loss variations anisotropically affect planetary motion only if the mass loss is asymmetric about the stellar equator. Also, we demonstrate how constant-velocity, asymmetric bipolar outflows in young systems incite orbital inclination changes. Consequently, this phenomenon readily tilts exoplanetary orbits external to a nascent disc on the order of degrees.
description: Accepted for publication in MNRAS; 16 pages, 6 figures, 2 tables, 1 appendix
Appendix A - Model Derivation and Analysis; Appendix B - Figures; Appendix C - Matlab codes from Habitat loss alters effects of intransitive higher order competition on biodiversity: a new metapopulation framework
Creators: name: Yinglin Li
name: Bearup, Daniel
name: Liao, Jinbao
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Model Derivation and Analysis; Figures S1-S14; Matlab codes for function integration1, Figures 1-4
Combining visibility analysis and deep learning for refinement of semantic 3D building models by conflict classification
Creators: name: Wysocki, Olaf
name: Grilli, Eleonora
name: Hoegner, Ludwig
name: Stilla, Uwe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Semantic 3D building models are widely available and used in numerous applications. Such 3D building models display rich semantics but no façade openings, chiefly owing to their aerial acquisition techniques. Hence, refining models' façades using dense, street-level, terrestrial point clouds seems a promising strategy. In this paper, we propose a method of combining visibility analysis and neural networks for enriching 3D models with window and door features. In the method, occupancy voxels are fused with classified point clouds, which provides semantics to voxels. Voxels are also used to identify conflicts between laser observations and 3D models. The semantic voxels and conflicts are combined in a Bayesian network to classify and delineate façade openings, which are reconstructed using a 3D model library. Unaffected building semantics is preserved while the updated one is added, thereby upgrading the building model to LoD3. Moreover, Bayesian network results are back-projected onto point clouds to improve points' classification accuracy. We tested our method on a municipal CityGML LoD2 repository and the open point cloud datasets: TUM-MLS-2016 and TUM-FAÇADE. Validation results revealed that the method improves the accuracy of point cloud semantic segmentation and upgrades buildings with façade elements. The method can be applied to enhance the accuracy of urban simulations and facilitate the development of semantic segmentation algorithms.
description: ISPRS Annals, 3DGeoInfo 2022, Australia, Sydney
A Survey on Digital Twins: Architecture, Enabling Technologies, Security and Privacy, and Future Prospects
Creators: name: Wang, Yuntao
name: Su, Zhou
name: Guo, Shaolong
name: Dai, Minghui
name: Luan, Tom H.
name: Liu, Yiliang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: By interacting, synchronizing, and cooperating with its physical counterpart in real time, digital twin is promised to promote an intelligent, predictive, and optimized modern city. Via interconnecting massive physical entities and their virtual twins with inter-twin and intra-twin communications, the Internet of digital twins (IoDT) enables free data exchange, dynamic mission cooperation, and efficient information aggregation for composite insights across vast physical/virtual entities. However, as IoDT incorporates various cutting-edge technologies to spawn the new ecology, severe known/unknown security flaws and privacy invasions of IoDT hinders its wide deployment. Besides, the intrinsic characteristics of IoDT such as \emph{decentralized structure}, \emph{information-centric routing} and \emph{semantic communications} entail critical challenges for security service provisioning in IoDT. To this end, this paper presents an in-depth review of the IoDT with respect to system architecture, enabling technologies, and security/privacy issues. Specifically, we first explore a novel distributed IoDT architecture with cyber-physical interactions and discuss its key characteristics and communication modes. Afterward, we investigate the taxonomy of security and privacy threats in IoDT, discuss the key research challenges, and review the state-of-the-art defense approaches. Finally, we point out the new trends and open research directions related to IoDT.
description: 21 pages, 7 figures
Is In-hospital Meta-information Useful for Abstractive Discharge Summary Generation?
Creators: name: Ando, Kenichiro
name: Komachi, Mamoru
name: Okumura, Takashi
name: Horiguchi, Hiromasa
name: Matsumoto, Yuji
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: During the patient's hospitalization, the physician must record daily observations of the patient and summarize them into a brief document called "discharge summary" when the patient is discharged. Automated generation of discharge summary can greatly relieve the physicians' burden, and has been addressed recently in the research community. Most previous studies of discharge summary generation using the sequence-to-sequence architecture focus on only inpatient notes for input. However, electric health records (EHR) also have rich structured metadata (e.g., hospital, physician, disease, length of stay, etc.) that might be useful. This paper investigates the effectiveness of medical meta-information for summarization tasks. We obtain four types of meta-information from the EHR systems and encode each meta-information into a sequence-to-sequence model. Using Japanese EHRs, meta-information encoded models increased ROUGE-1 by up to 4.45 points and BERTScore by 3.77 points over the vanilla Longformer. Also, we found that the encoded meta-information improves the precisions of its related terms in the outputs. Our results showed the benefit of the use of medical meta-information.
On the role of the H2 ortho:para ratio in gravitational collapse during star formation
Creators: name: Vaytet, Neil
name: Tomida, Kengo
name: Chabrier, Gilles
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hydrogen molecules (H2) come in two forms in the interstellar medium, ortho- and para-hydrogen, corresponding to the two different spin configurations of the two hydrogen atoms. The relative abundances of the two flavours in the interstellar medium are still very uncertain, and this abundance ratio has a significant impact on the thermal properties of the gas. In the context of star formation, theoretical studies have recently adopted two different strategies when considering the ortho:para ratio (OPR) of H2 molecules; the first considers the OPR to be frozen at 3:1 while the second assumes that the species are in thermal equilibrium. As the OPR potentially affects the protostellar cores which form as a result of the gravitational collapse of a dense molecular cloud, the aim of this paper is to quantify precisely what role the choice of OPR plays in the properties and evolution of the cores. We used two different ideal gas equations of state for a hydrogen and helium mix in a radiation hydrodynamics code to simulate the collapse of a dense cloud and the formation of the first and second Larson cores; the first equation of state uses a fixed OPR of 3:1 while the second assumes thermal equilibrium. Simulations using an equilibrium ratio collapse faster at early times and show noticeable oscillations around hydrostatic equilibrium, to the point where the core expands for a short time right after its formation before resuming its contraction. In the case of a fixed 3:1 OPR, the core's evolution is a lot smoother. The OPR was however found to have little impact on the size, mass and radius of the two Larson cores. We conclude that if one is solely interested in the final properties of the cores when they are formed, it does not matter which OPR is used. On the other hand, if one's focus lies primarily in the evolution of the first core, the choice of OPR becomes important.
description: 9 pages, 5 figures. Accepted for publication in Astronomy & Astrophysics
Reactions forming C(0,+)n=2,10, Cn=2,4H(0,+) and C3H(0,+) in the gas phase: semi empirical branching ratios
Creators: name: Chabot, M.
name: Beroff, K.
name: Gratier, P.
name: Jallat, A.
name: Wakelam, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The aim of this paper is to provide a new set of branching ratios for interstellar and planetary chemical networks based on a semi empirical model. We applied, instead of zero order theory (i.e. only the most exoergic decaying channel is considered), a statistical microcanonical model based on the construction of breakdown curves and using experimental high velocity collision branching ratios for their parametriza- tion. We applied the model to ion-molecule, neutral-neutral, and ion-pair reactions implemented in the few popular databases for astrochemistry such as KIDA, OSU and UMIST. We studied the reactions of carbon and hydrocarbon species with electrons, He+, H+, CH+, CH, C, and C+ leading to intermediate complexes of the type Cn=2,10, Cn=2,4 H, C3 H2, C+n=2,10, Cn=2,4 H+, or C3 H+2 . Comparison of predictions with measurements supports the validity of the model. Huge deviations with respect to database values are often obtained. Effects of the new branching ratios in time dependant chemistry for dark clouds and for photodissociation region chemistry with conditions similar to those found in the Horsehead Nebula are discussed.
An investigation of the line of sight towards QSO PKS 0237-233
Creators: name: Fathivavsari, H.
name: Petitjean, P.
name: Ledoux, C.
name: Noterdaeme, P.
name: Srianand, R.
name: Rahmani, H.
name: Ajabshirizadeh, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a detailed analysis of absorption systems along the line of sight towards QSO PKS 0237-233 using a high resolution spectrum of signal-to-noise ratio (SNR) ~ 60-80 obtained with the Ultraviolet and Visual Echelle Spectrograph mounted on the Very Large Telescope. This line of sight is known to show a remarkable overdensity of CIV systems that has been interpreted as revealing the presence of a supercluster of galaxies. A detailed analysis of each of these absorption systems is presented. In particular, for the z_abs = 1.6359 (with two components of logN(HI) = 18.45, 19.05) and z_abs = 1.6720 (logN(H I) = 19.78) sub-Damped Ly-alpha systems (sub-DLAs), we measure accurate abundances (resp. [O/H] = -1.63(0.07) and [Zn/H] = - 0.57(0.05) relative to solar). While the depletion of refractory elements onto dust grains in both sub-DLAs is not noteworthy, photoionization models show that ionization effects are important in a part of the absorbing gas of the sub-DLA at z_abs = 1.6359 (HI is 95 percent ionized) and in part of the gas of the sub-DLA at z_abs = 1.6359. The CIV clustering properties along the line of sight is studied in order to investigate the nature of the observed overdensity. We conclude that despite the unusually high number of CIV systems detected along the line of sight, there is no compelling evidence for the presence of a single unusual overdensity and that the situation is consistent with chance coincidence.
description: Accepted for publication in MNRAS. 23 pages, 16 figures, 12 tables
Bond orientational ordering in liquids: Towards a unified description of water-like anomalies, liquid-liquid transition, glass transition, and crystallization
Creators: name: Tanaka, Hajime
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: There are at least three fundamental states of matter, depending upon temperature and pressure: gas, liquid, and solid (crystal). These states are separated by first-order phase transitions between them. In both gas and liquid phases the complete translational and rotational symmetry exist, whereas in a solid phase both symmetries are broken. In intermediate phases between liquid and solid, which include liquid crystal and plastic crystal phases, only one of the two symmetries is preserved. Among the fundamental states of matter, the liquid state is most poorly understood. We argue that it is crucial for a better understanding of liquid to recognize that a liquid generally has a tendency to have local structural order and its presence is intrinsic and universal to any liquid. Such structural ordering is a consequence of many body correlations, more specifically, bond angle correlations, which we believe are crucial for the description of the liquid state. We show that this physical picture may naturally explain difficult unsolved problems associated with the liquid state, such as anomalies of water-type liquids (water, Si, Ge, ...), liquid-liquid transition, liquid-glass transition, crystallization and quasicrystal formation, in a unified manner. In other words, we need a new order parameter representing low local free-energy configuration, which is bond orientational order parameter in many cases, in addition to density order parameter for the physical description of these phenomena. Here we review our two-order-parameter model of liquid and consider how transient local structural ordering is linked to all of the above-mentioned phenomena. The relationship between these phenomena are also discussed.
description: Colloquium paper, 85 pages, 62 figures
The formation of multiple populations in the globular cluster 47 Tuc
Creators: name: Ventura, P.
name: Di Criscienzo, M.
name: D'Antona, F.
name: Vesperini, E.
name: Tailo, M.
name: Dell'Agli, F.
name: D'Ercole, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use the combination of photometric and spectroscopic data of 47 Tuc stars to reconstruct the possible formation of a second generation of stars in the central regions of the cluster, from matter ejected from massive Asymptotic Giant Branch stars, diluted with pristine gas. The yields from massive AGB stars with the appropriate metallicity (Z=0.004, i.e. [Fe/H]=-0.75) are compatible with the observations, in terms of extension and slope of the patterns observed, involving oxygen, nitrogen, sodium and aluminium. Based on the constraints on the maximum helium of 47 Tuc stars provided by photometric investigations, and on the helium content of the ejecta, we estimate that the gas out of which second generation stars formed was composed of about one-third of gas from intermediate mass stars, with M>= 5Mo and about two-thirds of pristine gas. We tentatively identify the few stars whose Na, Al and O abundances resemble the undiluted AGB yields with the small fraction of 47 Tuc stars populating the faint subgiant branch. From the relative fraction of first and second generation stars currently observed, we estimate that the initial FG population in 47 Tuc was about 7.5 times more massive than the cluster current total mass.
description: Accepted for publication in MNRAS
Strong- versus Weak-Coupling Paradigms for Cuprate Superconductivity
Creators: name: Asban, Shahaf
name: Shay, Meni
name: Naamneh, Muntaser
name: Kirzhner, Tal
name: Keren, Amit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Absolute resistivity measurements as a function of temperature from optimally doped YBa_2Cu_3O_(7), La_(2-x)Sr_xCuO_4, Bi_2Sr_2CaCu_2O_(8-x), and (Ca_0.1La_0.9)(Ba_1.65La_0.35)Cu_3O_y thin films are reported. Special attention is given to the measurement geometrical factors and the resistivity slope between Tc and T^{*}. The results are compared with a strong coupling theory for the resistivity derivative near T_c, which is based on hard core bosons (HCB), and with several weak coupling theories, which are BCS based. Surprisingly, our results agree with both paradigms. The implications of these findings and the missing calculations needed to distinguish between the two paradigms are discussed.
description: 5 pages, 6 figures
Towards a Privacy Compliant Research Interface for Multicenter Medical Data
Creators: name: Appenzeller, Arno
Publisher: name: Karlsruhe
Year: 2019

description: Big Data analysis gains more and more interest in the processing of e-Healthdata. The potentially big benefit of those analyses comes with a set of newunknown impacts to an individual’s privacy. Still it is important to find a balancebetween privacy impact and utility of the medical data analysis. To achieve this,this technical report takes a look on different privacy preserving techniques,that could be used for a privacy preserving research interface for medical data.The three techniques Differential privacy,k-Anonymity and Secure multi-partyComputation are evaluated on their feasibility for a medical use-case. Withthose preliminaries some formal definitions are made for a privacy preservingresearch interface which implements an hybrid approach of the three techniquesand a consent based interface.
High Luminance Organic Light-Emitting Diodes with Efficient Multi-Walled Carbon Nanotube Hole Injectors
Creators: name: Shi, Shengwei
name: Silva, S. Ravi P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report high luminance organic light-emitting diodes by use of acid functionalized multi-walled carbon nanotube (o-MWCNTs) as efficient hole injector electrodes with a simple and solution processable device structure. At only 10 V, the luminance can reach nearly 50,000 cd/m2 with an external quantum efficiency over 2% and a current efficiency greater than 21 cd/A. The investigation of hole-only devices shows that the mechanism for hole injection is changed from injection limited to bulk limited because of the higher effective work function of the anode modified by the o-MWCNTs. We expect the enhancement of the local electric field brought about by both the dielectric inhomogeneities within the o-MWCNT containing anode and the high aspect ratio carbon nanotubes, improves hole injection from the anode to organic active layer at much lower applied voltage.
description: 22 pages, 5 figures, 1 table