cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lattice Hadron Structure: Applications within and beyond QCD
Creators: name: Lin, Huey-Wen
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Study of the hadronic matrix elements can provide not only tests of the QCD sector of the Standard Model (in comparing with existing experiments) but also reliable low-energy hadronic quantities applicable to a wide range of beyond-the-Standard Model scenarios where experiments or theoretical calculations are limited or difficult. On the QCD side, progress has been made in the notoriously difficult problem of addressing gluonic structure inside the nucleon, reaching higher-$Q^2$ region of the form factors, and providing a complete picture of the proton spin. However, even further study and improvement of systematic uncertainties are needed. There are also proposed calculations of higher-order operators in the neutron electric dipole moment Lagrangian, which would be useful when combined with effective theory to probe BSM. Lattice isovector tensor and scalar charges can be combined with upcoming neutron beta-decay measurements of the Fierz interference term and neutrino asymmetry parameter to probe new interactions in the effective theory, revealing the scale of potential new TeV particles. Finally, I revisit the systematic uncertainties in recent calculations of $g_A$ and review prospects for future calculations.
description: 15 pages, 6 figures, Plenary given at the XXX International Symposium on Lattice Field Theory (Lattice 2012), June 24-29, 2012, Cairns, Australia
The radial distribution of water ice and chromophores across Saturn's system
Creators: name: Filacchione, G.
name: Capaccioni, F.
name: Clark, R. N.
name: Nicholson, P. D.
name: Cruikshank, D. P.
name: Cuzzi, J. N.
name: Lunine, J. I.
name: Brown, R. H.
name: Cerroni, P.
name: Tosi, F.
name: Ciarniello, M.
name: Buratti, B. J.
name: Hedman, M. M.
name: Flamini, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Over the last eight years, the Visual and Infrared Mapping Spectrometer (VIMS) aboard the Cassini orbiter has returned hyperspectral images in the 0.35-5.1 micron range of the icy satellites and rings of Saturn. These very different objects show significant variations in surface composition, roughness and regolith grain size as a result of their evolutionary histories, endogenic processes and interactions with exogenic particles. The distributions of surface water ice and chromophores, i.e. organic and non-icy materials, across the saturnian system, are traced using specific spectral indicators (spectral slopes and absorption band depths) obtained from rings mosaics and disk-integrated satellites observations by VIMS.
description: Accepted for publication in the Astrophysical Journal (Part 1)
Up Sector of Minimal Flavor Violation: Top Quark Properties and Direct D meson CP violation
Creators: name: Bai, Yang
name: Berger, Joshua
name: Hewett, JoAnne L.
name: Li, Ye
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Minimal Flavor Violation in the up-type quark sector leads to particularly interesting phenomenology due to the interplay of flavor physics in the charm sector and collider physics from flavor changing processes in the top sector. We study the most general operators that can affect top quark properties and $D$ meson decays in this scenario, concentrating on two CP violating operators for detailed studies. The consequences of these effective operators on charm and top flavor changing processes are generically small, but can be enhanced if there exists a light flavor mediator that is a Standard Model gauge singlet scalar and transforms under the flavor symmetry group. This flavor mediator can satisfy the current experimental bounds with a mass as low as tens of GeV and explain observed $D$-meson direct CP violation. Additionally, the model predicts a non-trivial branching fraction for a top quark decay that would mimic a dijet resonance.
description: 27 pages, 7 figures
N3C Privacy-Preserving Record Linkage and Linked Data Governance
Creators: name: N3C Consortium
Publisher: name: Zenodo
Year: 2021
Subjects: governance
data sharing
covid
data integration
data linkage

description: Table of Contents Background 2 N3C Privacy Preserving Record Linkage Principles 2 PPRL Participation Options 4 Deduplication 4 Linking Multiple Datasets 5 Cohort Discovery for Research Studies 7 Technical and Data Governance Architecture for N3C PPRL Linked Data Infrastructure 9 Appendix A Glossary 12 Appendix B Linkage Honest Broker Agreement 13 Appendix C Regulatory Considerations for Privacy-Preserving Record Linkage 27
Spin Magnetic Moment and Persistent Orbital Currents in Cylindrical Nanolayer
Creators: name: Aghekyan, N. G.
name: Amirkhanyan, S. M.
name: Kazaryan, E. M.
name: Sarkisyan, H. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Densities of persistent orbital and spin magnetic moment currents of an electron in a cylindrical nanolayer in the presence of external axial magnetic field are considered. For the mentioned current densities analytical expressions are obtained. The conditions when in the system only spin magnetic moment current is present are defined. Dependencies of orbital and spin magnetic moment currents on geometrical parameters of nanolayer are derived. It is shown that in the case of layered geometry the dependence of spin magnetic moment current on radial coordinate has a non-monotonic behavior. This is the peculiarity of layered geometry of nanostructure and it is due to the behavior of wave function of the system along the radial direction. Dependent on the directions of the field and orbital rotation of the electron there are defined values of radial coordinates when the orbital current disappears. The transition to the case of cylindrical quantum dot is discussed as well.
description: 9 pages, 11 figures
PROSPECTS FOR THE DEVELOPMENT OF THE DIGITAL ECONOMY IN UZBEKISTAN
Creators: name: Khashimkhodjaeva, Manzura
Publisher: name: Zenodo
Year: 2023

description: The processes connected to the digital economy's contribution to the nation's socioeconomic development are examined in this article. An examination of the proportion of ICTs in Uzbekistan's economic sectors and industries, as well as some indicators of communication and informatization, was done. There have been developed scientific proposals with helpful recommendations for the development of the digital economy in Uzbekistan based on the opportunities and conditions that are currently in place. analyzed the outcomes of the pressing need for scientific research with the goal of lowering production costs, creating new modern professions that will create jobs, and improving production efficiency through the widespread use of digital technologies in different industries and economic sectors.
Comparison of Social Welfare System of the Czech Republic and Socialist Republic of Vietnam
Creators: name: Vrba, Jan
Publisher: name: Zenodo
Year: 2017
Subjects: Comparison
welfare state
welfare policy
welfare systems
humans' social rights

description: This thesis is focused on comparison of welfare systems of the Czech Republic and Socialist Republic of Vietnam. In theoretical part, there are described basic terms connected with welfare system. In this part welfare system of the Czech Republic and welfare system of Socialist Republic of Vietnam are described as well. In practical part of thesis there are compared both welfare systems as well as practical recommendations on improvements are provided.
An on-shell approach to factorization
Creators: name: Feige, Ilya
name: Schwartz, Matthew D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Factorization is possible due to the universal behavior of Yang-Mills theories in soft and collinear limits. Here, we take a small step towards a more transparent understanding of these limits by proving a form of perturbative factorization at tree- level using on-shell spinor helicity methods. We present a concrete and self-contained expression of factorization in which matrix elements in QCD are related to products of other matrix elements in QCD up to leading order in a power-counting parameter determined by the momenta of certain physical on-shell states. Our approach uses only the scaling of momenta in soft and collinear limits, avoiding any assignment of scaling behavior to unphysical (and gauge-dependent) fields. The proof of factorization exploits many advantages of helicity spinors, such as the freedom to choose different reference vectors for polarizations in different collinear sectors. An advantage of this approach is that once factorization is shown to hold in QCD, the transition to Soft-Collinear Effective Theory is effortless.
description: 48 pages
"CHERRY PICKING" NIMA?
Creators: name: Zoilboyeva, Odina
Publisher: name: Zenodo
Year: 2023

description: Mazkur maqolada, jurnalistik ta'limda hamda jurnalistik faoliyatda juda muhim ahamiyat kasb etuvchi fakt chekingning ajralmas metodi sanalgan "cherry picking" metodi tahlil qilingan. Misollar yordamida ushbu metodning qanday ishlashi va ahamiyati yoritib berilgan.
A characterization of the diffuse Galactic emissions in the anti-center of the Galaxy
Creators: name: Fauvet, L.
name: Macias-Perez, J. F.
name: Hildebrandt, S. R.
name: Desert, F. -X.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using the Archeops and WMAP data we perform a study of the anti-center Galactic diffuse emissions - thermal dust, synchrotron, free-free and anomalous emission - at degree scales. The high frequency data are used to infer the thermal dust electromagnetic spectrum and spatial distribution allowing us to precisely subtract this component at lower frequencies. After subtraction of the thermal dust component a mixture of standard synchrotron and free-free emissions does not account for the residuals at these low frequencies. Including the all-sky 408 MHz Haslam data we find evidences for anomalous emission with a spectral index of 2.5 in TRJ units. However, we are not able to conclude regarding the nature of this anomalous emission in this region. For the purpose, data between 408 MHz and 20 GHz covering the same sky region are needed.
description: 7 pages, 3 figures, Advances in astronomy
Analysis of Import potential of commodities from Vietnam to the Czech Republic in Czech market
Creators: name: Vrba, Jan
Publisher: name: Zenodo
Year: 2022
Subjects: Czech Republic
Commodities
Import
Vietnam

description: The aim of this Master Thesis is to evaluate the import potential of commodities from Vietnam to the Czech Republic and to propose appropriate measures for practice. The thesis contains theoretical and practical part. The work is divided into two main parts. While the first main part presents theoretical framework and definitions, the second main part shows the analysis of the selected commodities and its evaluation. The analysis and detailed study of the topic are followed by proposals for practical use.
Management aspects of import potential of selected commodities from Vietnam to the Czech Republic
Creators: name: Vrba, Jan
Publisher: name: Zenodo
Year: 2021
Subjects: Czech Republic
Commodities Import
Manager Aspects
Vietnam

description: The dissertation thesis is focused on analysis of import potential of selected commodities from Vietnam to the Czech Republic and creating recommendations for practical use. The first part describes theoretical point of view as well as definitions concerning the topic. Second part of the dissertation thesis is aimed at analysis as well as analysis conclusions and discussion. Third part of the dissertation thesis is focused on proposing the recommendations for practical use connected to the import potential of selected commodities from Vietnam to the Czech Republic.
Momentum Fractions of Quarks and Gluons in a Self-similarity based model of Proton
Creators: name: Jahan, Akbari
name: Choudhury, D K
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we use momentum sum rule to compute the fractions of momentum carried by quarks and gluons in a self-similarity based model of proton. Comparison of the results with the prediction of QCD asymptotics is also made.
description: 9 pages, 2 figures
A simple scaling for the minimum instability time-scale of two widely spaced planets
Creators: name: Veras, Dimitri
name: Mustill, Alexander J.
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: Long-term instability in multi-planet exosystems is a crucial consideration when confirming putative candidates, analyzing exoplanet populations, constraining the age of exosystems, and identifying the sources of white dwarf pollution. Two planets which are Hill stable are separated by a wide-enough distance to ensure that they will never collide. However, Hill stable planetary systems may eventually manifest Lagrange instability when the outer planet escapes or the inner planet collides with the star. We show empirically that for two nearly coplanar Hill stable planets with eccentricities less than about 0.3, instability can manifest itself only after a time corresponding to X initial orbits of the inner planet, where log_{10}(X) is of the order of 5.2 mu^{-0.18} and mu is the planet-star mass ratio measured in (Jupiter mass/Solar mass). This relation applies to any type of equal-mass secondaries, and suggests that two low-eccentricity Hill stable terrestrial-mass or smaller-mass planets should be Lagrange stable throughout the main sequence lifetime of any white dwarf progenitor. However, Hill stable giant planets are not guaranteed to be Lagrange stable, particularly within a few tens of percent beyond the critical Hill separation. Our scaling represents a useful "rule of thumb" for planetary population syntheses or individual systems for which performing detailed long-term integrations is unfeasible.
description: Accepted for publication in MNRAS Letters; 5 pages, 3 figures
Euclidean Relativistic Quantum Mechanics
Creators: name: Kopp, Philip
name: Polyzou, Wayne
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss a formulation of exactly Poincaré invariant quantum mechanics where the input is model Euclidean Green functions or their generating functional. We discuss the structure of the models, the construction of the Hilbert space, the construction and transformation properties of single-particle states, and the construction of GeV scale transition matrix elements. A simple model is utilized to demonstrate the feasibility of this approach.
description: 8 Pages
Companion code and data for "High-level cognition during story listening is reflected in high-order dynamic correlations in neural activity patterns"
Creators: name: Manning, Jeremy R.
name: Chang, Thomas H.
name: Owen, Lucy L. W.
Publisher: name: Zenodo
Year: 2021
Subjects: comprehension
cognitive neuroscience
network dynamics
time series
story listening

description: This repository contains data and code used to produce the paper High-level cognition during story listening is reflected in high-order dynamic correlations in neural activity patterns by Lucy L.W. Owen, Thomas H. Chang, and Jeremy R. Manning. You may also be interested in our timecorr Python toolbox for calculating high-order dynamic correlations in timeseries data; the methods implemented in our timecorr toolbox feature prominently in our paper.
description: Link to GitHub repository: https://github.com/ContextLab/timecorr-paper Link to bioRxiv preprint: https://www.biorxiv.org/content/10.1101/763821v3
Placing ChatGPT in the context of disruptive technology in academic publishing
Creators: name: Montague-Hellen, Beth
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: classificationCode: Research Support
subject: Research Support

description: ChatGPT is an AI-based text generating tool which was released at the end of 2022. The tool is significantly better than previous AIs at generating written outputs which appear to have been written by a human including academic research articles. Within academic research there has been considerable interest in whether the tool can be used to write scholarly content, and what the consequences of this would be. Despite the increased quality of output ChatGPT still suffers from many of the flaws which plague other AI tools such as bias, inaccurate training materials and its use leads to concerns around plagiarism and research integrity. This article centres the viewpoint of an academic librarian to discuss ChatGPT in the context of other technologies which have been disruptive. An argument is made that the tool is simply one in a series of transformational developments in scholarly communications, which have all been, eventually, successfully assimilated. This work was supported by the Francis Crick Institute which receives its core funding from Cancer Research UK (CC0103), the UK Medical Research Council (CC0103), and the Wellcome Trust (CC0103).
Energy cascade and scaling in supersonic isothermal turbulence
Creators: name: Kritsuk, Alexei G.
name: Wagner, Rick
name: Norman, Michael L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Supersonic turbulence plays an important role in a number of extreme astrophysical and terrestrial environments, yet its understanding remains rudimentary. We use data from a three-dimensional simulation of supersonic isothermal turbulence to reconstruct an exact fourth-order relation derived analytically from the Navier-Stokes equations (Galtier and Banerjee, Phys. Rev. Lett., vol. 107, 2011, p. 134501). Our analysis supports a Kolmogorov-like inertial energy cascade in supersonic turbulence previously discussed on a phenomenological level. We show that two compressible analogues of the four-fifths law exist describing fifth- and fourth-order correlations, but only the fourth-order relation remains `universal' in a wide range of Mach numbers from incompressible to highly compressible regimes. A new approximate relation valid in the strongly supersonic regime is derived and verified. We also briefly discuss the origin of bottleneck bumps in simulations of compressible turbulence.
description: Accepted to JFM Rapids, 11 pages, 6 figures
Parameter calculation and result statistics of species abundance distribution (SAD) model
Creators: name: Gao, Junfeng
name: su, qiang
Publisher: name: figshare
Year: 2022

description: DATA-SAD datasets.zip: SAD original data, including CBC, GENTRY, MCDB, NABC, FRAG and RFISH
 Results of parameter calculation.zip: Calculation results of sad model parameters and goodness of fit of each database
 The calculator code.R: Calculate SAD model parameters and statistical test values of six SAD models for each database
 The statistical code.R: Statistics of test values of six SAD models for each database (“Results of parameter calculation” need to be input)
Multi-Directional Flow as Touch-Stone to Assess Models of Pedestrian Dynamics
Creators: name: Kretz, Tobias
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Multiagent Systems (cs.MA)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: For simulation models of pedestrian dynamics there are always the issues of calibration and validation. These are usually done by comparing measured properties of the dynamics found in observation, experiments and simulation in certain scenarios. For this the scenarios first need to be sensitive to parameter changes of a particular model or - if models are compared - differences between models. Second it is helpful if the exhibited differences can be expressed in quantities which are as simple as possible ideally a single number. Such a scenario is proposed in this contribution together with evaluation measures. In an example evaluation of a particular model it is shown that the proposed evaluation measures are very sensitive to parameter changes and therefore summarize differences effects of parameter changes and differences between models efficiently, sometimes in a single number. It is shown how the symmetry which exists in the achiral geometry of the proposed example scenario is broken in particular simulation runs exhibiting chiral dynamics, while in the statistics of 1,000 simulation runs there is a symmetry between left- and right-chiral dynamics. In the course of the symmetry breaking differences between models and parameter settings are amplified which is the origin of the high sensitivity of the scenario against parameter changes.
description: Contribution to 92nd Annual Meeting of the Transportation Research Board 2013. Presentation Number 13-1160
Bottom-heavy initial mass function in a nearby compact L*-galaxy
Creators: name: Läsker, Ronald
name: Bosch, Remco C. E. van den
name: van de Ven, Glenn
name: Ferreras, Ignacio
name: La Barbera, Francesco
name: Vazdekis, Alexandre
name: Falcón-Barroso, Jesús
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present orbit-based dynamical models and stellar population analysis of galaxy SDSS J151741.75-004217.6, a low-redshift (z=0.116) early-type galaxy (ETG) which, for its moderate luminosity, has an exceptionally high velocity dispersion. We aim to determine the central black hole mass (M_bh), the i-band stellar mass-to-light ratio, and the low-mass slope of the initial mass function (IMF). Combining constraints from HST imaging and longslit kinematic data with those from fitting the SDSS spectrum with stellar populations models of varying IMF, we show that this galaxy has a large fraction of low-mass stars, significantly higher than implied even by a Salpeter IMF. We exclude a Chabrier/Kroupa as well as a unimodal (i.e. single-segment) IMF, while a bimodal (low-mass tapered) shape is consistent with the dynamical constraints. Thereby, our study demonstrates that a very bottom-heavy IMF can exist even in an L* ETG. We place an upper limit of ~10^{10.5}M_sun on M_bh, which still leaves open the possibility of an extremely massive BH.
description: 5 pages, 3 figures, accepted for publication in MNRAS Letters
Software and Science at the Open Force Field Initiative (NIH ODSS/BISDI Talk)
Creators: name: Wagner, Jeff
Publisher: name: Zenodo
Year: 2021

description: Talk given to the NIH ODSS/BISDI group on Aug 5 2021. Includes short description of OpenFF's mission and history, software and data practices that have evolved, and work under ODSS Supplement to make the OpenFF Interchange (name changed since grant submission, original was "OpenFF System"), and some distilled "lessons learned".
description: Supported by NIH GM132386 and administrative supplement.
Bose-Einstein condensate dark matter model tested by galactic rotation curves
Creators: name: Dwornik, Marek
name: Keresztes, Zoltán
name: Gergely, László Á.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Rotation curves of spiral galaxies are fundamental tools in the study of dark matter. Here we test the Bose-Einstein condensate (BEC) dark matter model against rotation curve data of High and Low Surface Brightness (HSB and LSB) galaxies, respectively. When the rotational velocities increase over the whole observed range, the fit of the BEC model is similar to the one of the Navarro-Frenk-White (NFW) dark matter model. When however the rotation curves exhibit long flat regions, the NFW profiles provide a slightly better fit.
description: 3 pages, to be published in the Proceedings of the Thirteenth Marcel Grossmann Meeting, Stockholm, Sweden 2012
Cool horizons for entangled black holes
Creators: name: Maldacena, Juan
name: Susskind, Leonard
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: General relativity contains solutions in which two distant black holes are connected through the interior via a wormhole, or Einstein-Rosen bridge. These solutions can be interpreted as maximally entangled states of two black holes that form a complex EPR pair. We suggest that similar bridges might be present for more general entangled states. In the case of entangled black holes one can formulate versions of the AMPS(S) paradoxes and resolve them. This suggests possible resolutions of the firewall paradoxes for more general situations.
description: 48 pages, 23 figures. v2: references added
RAQAMLI GIGIYENA NIMA VA UNGA QANDAY AMAL QILISH MUMKIN?
Creators: name: Zoilboyeva, Odina
Publisher: name: Zenodo
Year: 2023

description: Mazkur maqolada hozrgi kunda eng dolzarb hamda muammoli nuqtaga aylanib ulgirgan, shu davrning ko'rinmas xavfi kibermakon muammolaridan qanday qilib xavfsiz saqlanish mumkinligi, shuningdek kiberjinoyatchilik, unga qarshi samarali qurollar va vositalardan unumli foydalanish haqidagi ilmiy hamda ommabop masalalar tahlil qilinadi. Muallif yechim sifatida raqali gigiyenani keng ommaga taklif qiladi.
title: Felicia - Blumiger Weintyp mit Aromanoten reifer Früchte
Creators: name: Julius Kühn-Institut, Bundesforschungsinstitut für Kulturpflanzen, Institut für Rebenzüchtung
Publisher: name: Julius Kühn-Institut, Bundesforschungsinstitut für Kulturpflanzen
Year: 2019

description: Informationsblatt des JKI
Sterile Neutrinos with Secret Interactions - Lasting Friendship with Cosmology
Creators: name: Chu, Xiaoyong
name: Dasgupta, Basudeb
name: Kopp, Joachim
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Sterile neutrinos with mass ~1 eV and order 10% mixing with active neutrinos have been proposed as a solution to anomalies in neutrino oscillation data, but are tightly constrained by cosmological limits. It was recently shown that these constraints are avoided if sterile neutrinos couple to a new MeV-scale gauge boson A'. However, even this scenario is restricted by structure formation constraints when A'-mediated collisional processes lead to efficient active-to-sterile neutrino conversion after neutrinos have decoupled. In view of this, we reevaluate in this paper the viability of sterile neutrinos with such "secret" interactions. We carefully dissect their evolution in the early Universe, including the various production channels and the expected modifications to large scale structure formation. We argue that there are two regions in parameter space - one at very small A' coupling, one at relatively large A' coupling - where all constraints from big bang nucleosynthesis (BBN), cosmic microwave background (CMB), and large scale structure (LSS) data are satisfied. Interestingly, the large A' coupling region is precisely the region that was previously shown to have potentially important consequences for the small scale structure of dark matter halos if the A' boson couples also to the dark matter in the Universe.
description: 12 pages
The heating history of Vesta and the onset of differentiation
Creators: name: Formisano, Michelangelo
name: Federico, Costanzo
name: Turrini, Diego
name: Coradini, Angioletta
name: Capaccioni, Fabrizio
name: De Sanctis, Maria Cristina
name: Pauselli, Cristina
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this work we study the link between the evolution of the internal structure of Vesta and thermal heating due to 26Al and 60Fe and long-lived radionuclides, taking into account the chemical differentiation of the body and the affinity of 26Al with silicates. Differentiation takes place in all scenarios in which Vesta completes its accretion in less than 1.4 Ma after the injection of 26Al into the Solar Nebula. In all those scenarios where Vesta completes its formation in less than 1 Ma from the injection of 26Al, the degree of silicate melting reaches 100 vol. % throughout the whole asteroid. If Vesta completed its formation between 1 and 1.4 Ma after 26Al injection, the degree of silicate melting exceeds 50 vol. % over the whole asteroid but reaches 100 vol. % only in the hottest, outermost part of the mantle in all scenarios where the porosity is lower than 5 vol. %. If the formation of Vesta occurred later than 1.5 Ma after the injection of 26Al, the degree of silicate melting is always lower than 50 vol. % and is limited only to a small region of the asteroid. The radiation at the surface dominates the evolution of the crust which ranges in thickness from 8 to about 30 km after 5 Ma: a layer about 3-20 km thick is composed of primitive unmelted chondritic material while a layer of about 5-10 km is eucritic.
description: 22 pages, 3 tables, 6 figures. Accepted for publication on Meteoritics and Planetary Science, Special Issue for the Dawn Mission on the composition of Vesta
Deploying robots with two sensors in $K_{1,6}$-free graphs
Creators: name: Abbas, Waseem
name: Egerstedt, Magnus
name: Liu, Chun-Hung
name: Thomas, Robin
name: Whalen, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let $G$ be a graph of minimum degree at least two with no induced subgraph isomorphic to $K_{1,6}$. We prove that if $G$ is not isomorphic to one of eight exceptional graphs, then it is possible to assign two-element subsets of $\{1,2,3,4,5\}$ to the vertices of $G$ in such a way that for every $i\in\{1,2,3,4,5\}$ and every vertex $v\in V(G)$ the label $i$ is assigned to $v$ or one of its neighbors. It follows that $G$ has fractional domatic number at least $5/2$. This is motivated by a problem in robotics and generalizes a result of Fujita, Yamashita and Kameda who proved that the same conclusion holds for all $3$-regular graphs.
Nanoscale InN clusters and compositional inhomogeneities in InGaN epitaxial layers quantified by tip-enhanced Raman scattering
Creators: name: Seidlitz, Daniel
name: Poliani, Emanuele
name: Ries, Maximilian
name: Hoffmann, Axel
name: Wagner, Markus R.
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 530 Physik
subject: chemical vapor deposition
subject: thin films
subject: nanoclusters
subject: epitaxy
subject: near field spectroscopy
subject: alloys
subject: Raman scattering
subject: iLght emitting diode materials
subject: Raman spectroscopy

description: We investigate the compositional homogeneity of InGaN thin films with a high In content grown by migration-enhanced plasma-assisted metal-organic chemical vapor deposition. Micro-Raman spectroscopy and tip-enhanced Raman spectroscopy (TERS) are used to analyze the local InGaN composition on the micro- and nanoscale. Based on conventional micro-Raman mapping, the InGaN composition for all samples appears uniform but shows indications for intrinsic phase separations. TERS, a nanoscopic technique with a high spatial resolution far below the diffraction limit, verifies the formation of nanoscale compositional inhomogeneities. The dimensions of these compositional fluctuations observed in TERS are confirmed by scattering-type scanning near-field infrared nanoscopy (s-SNIN). In contrast to s-SNIN, we show that TERS furthermore enables the quantification of the In content in the different compositional regions and even allows the identification of InN nanoclusters near the surface of the epitaxial films.
An upper bound on the fractional chromatic number of triangle-free subcubic graphs
Creators: name: Liu, Chun-Hung
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: An $(a:b)$-coloring of a graph $G$ is a function $f$ which maps the vertices of $G$ into $b$-element subsets of some set of size $a$ in such a way that $f(u)$ is disjoint from $f(v)$ for every two adjacent vertices $u$ and $v$ in $G$. The fractional chromatic number $χ_f(G)$ is the infimum of $a/b$ over all pairs of positive integers $a,b$ such that $G$ has an $(a:b)$-coloring. Heckman and Thomas conjectured that the fractional chromatic number of every triangle-free graph $G$ of maximum degree at most three is at most 2.8. Hatami and Zhu proved that $χ_f(G) \leq 3-3/64 \approx 2.953$. Lu and Peng improved the bound to $χ_f(G) \leq 3-3/43 \approx 2.930$. Recently, Ferguson, Kaiser and Král' proved that $χ_f(G) \leq 32/11 \approx 2.909$. In this paper, we prove that $χ_f(G) \leq 43/15 \approx 2.867$.
H2O emission in high-z ultra-luminous infrared galaxies
Creators: name: Omont, A.
name: Yang, Chentao
name: Cox, P.
name: Neri, R.
name: Beelen, A.
name: Bussmann, S.
name: Gavazzi, R.
name: van der Werf, P.
name: Riechers, D.
name: Downes, D.
name: Krips, M.
name: Dye, S.
name: Ivison, R.
name: Vieira, J. D.
name: Weiss, A.
name: Aguirre, J. E.
name: Baes, M.
name: Baker, A. J.
name: Bertoldi, F.
name: Cooray, A.
name: Dannerbauer, H.
name: De Zotti, G.
name: Eales, S. A.
name: Fu, H.
name: Gao, Y.
name: Guelin, M.
name: Harris, A. I.
name: Jarvis, M.
name: Lehnert, M.
name: Leeuw, L.
name: Lupu, R.
name: Menten, K.
name: Michalowski, M. J.
name: Negrello, M.
name: Serjeant, S.
name: Temi, P.
name: Auld, R.
name: Dariush, A.
name: Dunne, L.
name: Fritz, J.
name: Hopwood, R.
name: Hoyos, C.
name: Ibar, E.
name: Maddox, S.
name: Smith, M. W. L.
name: Valiante, E.
name: Bock, J.
name: Bradford, C. M.
name: Glenn, J.
name: Scott, K. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using IRAM PdBI we report the detection of H2O in six new lensed ultra-luminous starburst galaxies at high redshift, discovered in the Herschel H-ATLAS survey. The sources are detected either in the 2_{02}-1_{11} or 2_{11}-2_{02} H_2O emission lines with integrated line fluxes ranging from 1.8 to 14 Jy.km/s. The corresponding apparent luminosities are mu x L_H2O ~ 3-12 x 10^8 Lo, where mu is the lensing magnification factor (3 < mu < 12). These results confirm that H2O lines are among the strongest molecular lines in such galaxies, with intensities almost comparable to those of the high-J CO lines, and same profiles and line widths (200-900 km/s) as the latter. With the current sensitivity of PdBI, H2O can therefore easily be detected in high-z lensed galaxies (with F(500um) > 100 mJy) discovered in the Herschel surveys. Correcting the luminosities for lensing amplification, L_H2O is found to have a strong dependence on the IR luminosity, varying as ~L_IR^{1.2}. This relation which needs to be confirmed with better statistics, may indicate a role of radiative (IR) excitation of the H2O lines, and implies that high-z galaxies with L_IR >~ 10^13 Lo tend to be very strong emitters in H2O, that have no equivalent in the local universe.
description: 13 pages, 4 figures A&A in press
Search for Rayleigh scattering in the atmosphere of GJ1214b
Creators: name: de Mooij, Ernst J. W.
name: Brogi, Matteo
name: de Kok, Remco J.
name: Snellen, Ignas A. G
name: Croll, Bryce
name: Jayawardhana, Ray
name: Hoekstra, Henk
name: Otten, Gilles P. P. L.
name: Bekkers, David H.
name: Haffert, Sebastiaan Y.
name: van Houdt, Josha. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We investigate the atmosphere of GJ1214b, a transiting super-Earth planet with a low mean density, by measuring its transit depth as a function of wavelength in the blue optical portion of the spectrum. It is thought that this planet is either a mini-Neptune, consisting of a rocky core with a thick, hydrogen-rich atmosphere, or a planet with a composition dominated by water. Most observations favor a water-dominated atmosphere with a small scale-height, however, some observations indicate that GJ1214b could have an extended atmosphere with a cloud layer muting the molecular features. In an atmosphere with a large scale-height, Rayleigh scattering at blue wavelengths is likely to cause a measurable increase in the apparent size of the planet towards the blue. We observed the transit of GJ1214b in the B-band with the FOcal Reducing Spectrograph (FORS) at the Very Large Telescope (VLT) and in the g-band with both ACAM on the William Hershel Telescope (WHT) and the Wide Field Camera (WFC) at the Isaac Newton Telescope (INT). We find a planet-to-star radius ratio in the B-band of 0.1162+/-0.0017, and in the g-band 0.1180+/-0.0009 and 0.1174+/-0.0017 for the WHT & INT observations respectively. These optical data do not show significant deviations from previous measurements at longer wavelengths. In fact, a flat transmission spectrum across all wavelengths best describes the combined observations. When atmospheric models are considered a small scale-height water-dominated model fits the data best.
description: Accepted for publication in ApJ
Formation of Precessing Jets by Tilted Black-hole Discs in 3D General Relativistic MHD Simulations
Creators: name: Liska, Matthew
name: Hesp, Casper
name: Tchekhovskoy, Alexander
name: Ingram, Adam
name: van der Klis, Michiel
name: Markoff, Sera
Publisher: name: arXiv
Year: 2017
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: FOS: Physical sciences

description: Gas falling into a black hole (BH) from large distances is unaware of BH spin direction, and misalignment between the accretion disc and BH spin is expected to be common. However, the physics of tilted discs (e.g., angular momentum transport and jet formation) is poorly understood. Using our new GPU-accelerated code H-AMR, we performed 3D general relativistic magnetohydrodynamic simulations of tilted thick accretion discs around rapidly spinning BHs, at the highest resolution to date. We explored the limit where disc thermal pressure dominates magnetic pressure, and showed for the first time that, for different magnetic field strengths on the BH, these flows launch magnetized relativistic jets propagating along the rotation axis of the tilted disc (rather than of the BH). If strong large-scale magnetic flux reaches the BH, it bends the inner few gravitational radii of the disc and jets into partial alignment with the BH spin. On longer time scales, the simulated disc-jet system as a whole undergoes Lense-Thirring precession and approaches alignment, demonstrating for the first time that jets can be used as probes of disc precession. When the disc turbulence is well-resolved, our isolated discs spread out, causing both the alignment and precession to slow down.
description: MNRAS Letters, accepted. Animations available at https://www.youtube.com/playlist?list=PL39mDr1uU6a5RYZdXLAjKE1C_GAJkQJNv. Appendix with numerical tests available at: https://academic.oup.com/mnrasl/article/474/1/L81/4566532#supplementary-data
Measurements of the cosmic ray spectrum and average mass with IceCube
Creators: name: Hussain, Shahid
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Located at the South Pole, IceCube is a particle-astrophysics observatory composed of a square-kilometer surface air shower array (IceTop) and a 1.4 km deep cubic-kilometer optical Cherenkov detector array. We review results of measurements of the cosmic ray spectrum and average mass in the energy range 1 PeV to 1 EeV.
description: 15 pages, 8 figures; submitted to Advances in Space Research
Renormalization group invariants in neutrino sector
Creators: name: Haba, Naoyuki
name: Takahashi, Ryo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show renormalization group invariants in neutrino sector. These are found from a simple analytical discussion of Majorana mass matrix for light neutrinos. It is shown that the invariants are obtained by taking ratios among elements of the Majorana neutrino mass matrix. The invariance is independent of neutrino mass ordering and a parameterization of mixing matrix for the lepton sector. Parameters in the runnings under renormalization group equations in the neutrino sector are also analyzed.
description: 17 pages, 10 figures, minor changes
title: Risikobewertung von Chondroitinsulfat in Nahrungsergänzungsmitteln: Stellungnahme Nr. 040/2018 des BfR vom 7. Dezember 2018
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2018
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2018, no. 040
Predators-prey models with competition Part I: existence, bifurcation and qualitative properties
Creators: name: Berestycki, Henri
name: Zilio, Alessandro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q92, 35A01, 35B25, 35B32, 92D50

description: We study a mathematical model of environments populated by both preys and predators, with the possibility for predators to actively compete for the territory. For this model we study existence and uniqueness of solutions, and their asymptotic properties in time, showing that the solutions have different behavior depending on the choice of the parameters. We also construct heterogeneous stationary solutions and study the limits of strong competition and abundant resources. We then use these information to study some properties such as the existence of solutions that maximize the total population of predators. We prove that in some regimes the optimal solution for the size of the total population contains two or more groups of competing predators.
description: 61 pages, no figures
Radiation damage in the LHCb Vertex Locator
Creators: name: Affolder, A.
name: Akiba, K.
name: Alexander, M.
name: Ali, S.
name: Artuso, M.
name: Benton, J.
name: van Beuzekom, M.
name: Bjørnstad, P. M.
name: Bogdanova, G.
name: Borghi, S.
name: Bowcock, T. J. V.
name: Brown, H.
name: Buytaert, J.
name: Casse, G.
name: Collins, P.
name: De Capua, S.
name: Dossett, D.
name: Eklund, L.
name: Farinelli, C.
name: Garofoli, J.
name: Gersabeck, M.
name: Gershon, T.
name: Gordon, H.
name: Harrison, J.
name: Heijne, V.
name: Hennessy, K.
name: Hutchcroft, D.
name: Jans, E.
name: John, M.
name: Ketel, T.
name: Lafferty, G.
name: Latham, T.
name: Leflat, A.
name: Liles, M.
name: Moran, D.
name: Mous, I.
name: Oblakowska-Mucha, A.
name: Parkes, C.
name: Patel, G. D.
name: Redford, S.
name: Reid, M. M.
name: Rinnert, K.
name: Rodrigues, E.
name: Schiller, M.
name: Szumlak, T.
name: Thomas, C.
name: Velthuis, J.
name: Volkov, V.
name: Webber, A. D.
name: Whitehead, M.
name: Zverev, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The LHCb Vertex Locator (VELO) is a silicon strip detector designed to reconstruct charged particle trajectories and vertices produced at the LHCb interaction region. During the first two years of data collection, the 84 VELO sensors have been exposed to a range of fluences up to a maximum value of approximately $\rm{45 \times 10^{12}\,1\,MeV}$ neutron equivalent ($\rm{1\,MeV\,n_{eq}}$). At the operational sensor temperature of approximately $-7\,^{\circ}\rm{C}$, the average rate of sensor current increase is $18\,\upmu\rm{A}$ per $\rm{fb^{-1}}$, in excellent agreement with predictions. The silicon effective bandgap has been determined using current versus temperature scan data after irradiation, with an average value of $E_{g}=1.16\pm0.03\pm0.04\,\rm{eV}$ obtained. The first observation of n-on-n sensor type inversion at the LHC has been made, occurring at a fluence of around $15 \times 10 ^{12}$ of $1\,\rm{MeV\,n_{eq}}$. The only n-on-p sensors in use at the LHC have also been studied. With an initial fluence of approximately $\rm{3 \times 10^{12}\,1\,MeV\,n_{eq}}$, a decrease in the Effective Depletion Voltage (EDV) of around 25\,V is observed, attributed to oxygen induced removal of boron interstitial sites. Following this initial decrease, the EDV increases at a comparable rate to the type inverted n-on-n type sensors, with rates of $(1.43\pm 0.16) \times 10 ^{-12}\,\rm{V} / \, 1 \, \rm{MeV\,n_{eq}}$ and $(1.35\pm 0.25) \times 10 ^{-12}\,\rm{V} / \, 1 \, \rm{MeV\,n_{eq}}$ measured for n-on-p and n-on-n type sensors, respectively. A reduction in the charge collection efficiency due to an unexpected effect involving the second metal layer readout lines is observed.
Transitional justice and the 'Colombian peace process'
Creators: name: Andrés Díaz Pabón, Fabio
Publisher: name: Routledge
Year: 2018

description: This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book begins with a brief history of the conflict and of previous peace processes, making the case that the current peace process is best understood in relation to the wider historical process of state consolidation and successive peace attempts in Colombia. The book discusses in detail the agreements between the Fuerzas Armadas Revolucionarias de Colombia—Ejercito del Pueblo (FARC—EP) and the Colombian Government and its transitional justice component. The book focuses on identifying the challenges facing the implementation of the objectives of the transitional justice component of the peace agreement between the FARC—EP and the Colombian Government. It examines the challenges encountered in relation to policies regarding land and its restitution in Colombia. The Colombian Government has implemented and experimented with a diversity of measures in pursuit of justice and transitional justice in Colombia.