cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interpreting time-integrated polarization data of gamma-ray burst prompt emission
Creators: name: Guan, R. Y.
name: Lan, M. X.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aims. With the accumulation of polarization data in the gamma-ray burst (GRB) prompt phase, polarization models can be tested. Methods. We predicted the time-integrated polarizations of 37 GRBs with polarization observation. We used their observed spectral parameters to do this. In the model, the emission mechanism is synchrotron radiation, and the magnetic field configuration in the emission region was assumed to be large-scale ordered. Therefore, the predicted polarization degrees (PDs) are upper limits. Results. For most GRBs detected by the Gamma-ray Burst Polarimeter (GAP), POLAR, and AstroSat, the predicted PD can match the corresponding observed PD. Hence the synchrotron-emission model in a large-scale ordered magnetic field can interpret both the moderately low PDs ($\sim10\%$) detected by POLAR and relatively high PDs ($\sim45\%$) observed by GAP and AstroSat well. Therefore, the magnetic fields in these GRB prompt phases or at least during the peak times are dominated by the ordered component. However, the predicted PDs of GRB 110721A observed by GAP and GRB 180427A observed by AstroSat are both lower than the observed values. Because the synchrotron emission in an ordered magnetic field predicts the upper-limit of the PD for the synchrotron-emission models, PD observations of the two bursts challenge the synchrotron-emission model. Then we predict the PDs of the High-energy Polarimetry Detector (HPD) and Low-energy Polarimetry Detector (LPD) on board the upcoming POLAR-2. In the synchrotron-emission models, the concentrated PD values of the GRBs detected by HPD will be higher than the LPD, which might be different from the predictions of the dissipative photosphere model. Therefore, more accurate multiband polarization observations are highly desired to test models of the GRB prompt phase.
description: 6 pages, 5 figures, with updated AstroSat data, accepted by AA
Propensity score estimation: neural networks, support vector machines, decision trees (CART), and meta-classifiers as alternatives to logistic regression
Creators: name: Funk, Michele Jonsson
name: Westreich, Daniel
name: Lessler, Justin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Propensity scores for the analysis of observational data are typically estimated using logistic regression. Our objective in this Review was to assess machine learning alternatives to logistic regression which may accomplish the same goals but with fewer assumptions or greater accuracy.
NLO Corrections to Heavy Flavour Distributions in Polarized Deep-Inelastic Scattering
Creators: name: Hekhorn, Felix
name: Stratmann, Marco
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a first calculation of the heavy flavor contribution to the longitudinally polarized DIS structure function $g_1$, differential in the transverse momentum or the rapidity of the observed heavy antiquark $\overline{Q}$. All results are obtained at next-to-leading order accuracy with a newly developed parton-level Monte Carlo generator that also allows one to study observables associated with the heavy quark pair such as its invariant mass distribution or its correlation in azimuthal angle. First phenomenological studies are presented in a kinematic regime relevant for a future Electron-Ion Collider with a particular emphasis on the sensitivity to the helicity gluon distribution. Finally, we also provide first NLO results for the full neutral-current sector of polarized DIS, i.e., including contributions from Z-boson exchange.
description: 6 pages, 8 figures; XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2019)
The Patient-Reported Outcomes Measurement Information System (PROMIS) developed and tested its first wave of adult self-reported health outcome item banks: 2005–2008
Creators: name: Choi, Seung
name: Hays, Ron
name: Cella, David
name: Gershon, Richard
name: Buysse, Daniel
name: Riley, William
name: Rose, Matthias
name: Yount, Susan
name: Cook, Karon
name: Lai, Jin-Shei
name: Stone, Arthur
name: Revicki, Dennis
name: Weinfurt, Kevin
name: DeWalt, Darren
name: Pilkonis, Paul
name: Rothrock, Nan
name: DeVellis, Robert
name: Hahn, Elizabeth A.
name: Bode, Rita
name: Fries, James F.
name: Amtmann, Dagmar
name: Reeve, Bryce
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Patient-reported outcomes (PROs) are essential when evaluating many new treatments in health care, yet current measures have been limited by a lack of precision, standardization and comparability of scores across studies and diseases. The Patient-Reported Outcomes Measurement Information System (PROMIS™) provides item banks that offer the potential for PRO measurement that is efficient (minimizes item number without compromising reliability) flexible (enables optional use of interchangeable items), and precise (has minimal error in estimate) measurement of commonly-studied PROs. We report results from the first large-scale testing of PROMIS items.
Curve counting in genus one: elliptic singularities & relative geometry
Creators: name: Battistella, Luca
name: Nabijou, Navid
name: Ranganathan, Dhruv
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14N35, 14H10

description: We construct and study the reduced, relative, genus one Gromov--Witten theory of very ample pairs. These invariants form the principal component contribution to relative Gromov--Witten theory in genus one and are relative versions of Zinger's reduced Gromov--Witten invariants. We relate the relative and absolute theories by degeneration of the tangency conditions, and the resulting formulas generalise a well-known recursive calculation scheme put forward by Gathmann in genus zero. The geometric input is a desingularisation of the principal component of the moduli space of genus one logarithmic stable maps to a very ample pair, using the geometry of elliptic singularities. Our study passes through general techniques for calculating integrals on logarithmic blowups of moduli spaces of stable maps, which may be of independent interest.
description: 38 pages, 11 figures, comments welcome! v2: exposition improved thanks to the referee's comments. Final version to appear in Algebraic Geometry
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 6 (87)]
Creators: name: (:Unkn) Unknown
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1385
Subjects: subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Fragment (Es ist nur der Teil der Urkunde mit den Notarsunterfertigungen vorhanden.)
Construction of the eight-item patient-reported outcomes measurement information system pediatric physical function scales: built using item response theory
Creators: name: Lai, Jin-Shei
name: Thissen, David
name: Varni, James W.
name: Stucky, Brian D.
name: Irwin, Debra E.
name: Langer, Michelle
name: DeWitt, Esi Morgan
name: DeWalt, Darren A.
name: Yeatts, Karin B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To create self-report physical function (PF) measures for children using modern psychometric methods for item analysis as part of Patient Reported Outcomes Measurement Information System (PROMIS).
The effect of metallicity on the abundances of molecules in protoplanetary disks
Creators: name: Guadarrama, R.
name: Vorobyov, Eduard I.
name: Rab, Christian
name: Güdel, Manuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the influence of different metallicities on the physical, thermal, and chemical properties of protoplanetary disks, and in particular on the formation and destruction of carbon-based molecules. With the thermo-chemical code ProoDIMO we investigate the impact of lower metallicities on the radiation field, disk temperature, and the abundance of different molecules (H$_2$O, CH$_4$, CO, CO$_2$, HCN, CN, HCO$^+$ and N$_2$H$^+$). We use a fiducial disk model as a reference model and produce two models with lower metallicity. The resulting influence on different chemical species is studied by analyzing their abundance distribution throughout the disk and their vertical column density. Furthermore, the formation and destruction reactions of the chemical species are studied. The results show a relation between the metallicity of the disk and the strength of the stellar radiation field inside the disk. As the metallicity decreases the radiation field is able to penetrate deeper regions of the disk. As a result, there is a stronger radiation field overall in the disk with lower metallicity which also heats up the disk. This triggers a series of changes in the chemical formation and destruction efficiencies for different chemical species. In most cases, the available species abundances change and have greater values compared to scaled-down abundances by constant factors. Metallicity has a clear impact on the snowline of the molecules studied here as well. As metallicity decreases the snowlines are pushed further out and existing snow rings shrink in size.
description: 19 pages, 18 figures
Detecting the Upturn of the Solar $^8$B Neutrino Spectrum with LENA
Creators: name: Möllenberg, Randolph
name: von Feilitzsch, Franz
name: Hellgartner, Dominikus
name: Oberauer, Lothar
name: Tippmann, Marc
name: Winter, Jürgen
name: Wurm, Michael
name: Zimmer, Vincenz
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: LENA (Low Energy Neutrino Astronomy) has been proposed as a next generation 50 kt liquid scintillator detector. The large target mass allows a high precision measurement of the solar $^8$B neutrino spectrum, with an unprecedented energy threshold of 2 MeV. Hence, it can probe the MSW-LMA prediction for the electron neutrino survival probability in the transition region between vacuum and matter-dominated neutrino oscillations. Based on Monte Carlo simulations of the solar neutrino and the corresponding background spectra, it was found that the predicted upturn of the solar $^8$B neutrino spectrum can be detected with 5 sigma significance after 5 y.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 6 (93)]
Creators: name: Francesco
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1438
Subjects: subject: Urkunde weltlicher Fürsten
subject: Urkunde
subject: 090

description: Francesco Foscari, Doge von Venedig, weist Andrea Ualerius, provisor Lucris, an, unverzüglich die Aufnahme der Arbeit an der Festung Lucri unter der Aufsicht des Trusardus de Calepio zu veranlassen.
A Tri-objective Method for Bi-objective Feature Selection in Classification
Creators: name: Jiao, Ruwang
name: Xue, Bing
name: Zhang, Mengjie
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: classificationCode: 4602
subject: Artificial intelligence
classificationCode: 49
subject: Mathematical sciences
classificationCode: 46
subject: Information and computing sciences

description: Minimizing the number of selected features and maximizing the classification performance are two main objectives in feature selection, which can be formulated as a biobjective optimization problem. Due to the complex interactions between features, a solution (i.e., feature subset) with poor objective values does not mean that all the features it selects are useless, as some of them combined with other complementary features can greatly improve the classification performance. Thus, it is necessary to consider not only the performance of feature subsets in the objective space, but also their differences in the search space, to explore more promising feature combinations. To this end, this paper proposes a tri-objective method for bi-objective feature selection in classification, which solves a bi-objective feature selection problem as a triobjective problem by considering the diversity (differences) between feature subsets in the search space as the third objective. The selection based on the converted triobjective method can maintain a balance between minimizing the number of selected features, maximizing the classification performance, and exploring more promising feature subsets. Furthermore, a novel initialization strategy and an offspring reproduction operator are proposed to promote the diversity of feature subsets in the objective space and improve the search ability, respectively. The proposed algorithm is compared with five multi-objective-based feature selection methods, six typical feature selection methods, and two peer methods with diversity as a helper objective. Experimental results on 20 real-world classification datasets suggest that the proposed method outperforms the compared methods in most scenarios.
Stronger quantum fluctuation with larger spins: Emergent magnetism in the pressurized high-temperature superconductor FeSe
Creators: name: Tan, Yuting
name: Zhang, Tianyu
name: Zou, Tao
name: Santos, A. M. dos
name: Hu, Jin
name: Yao, Dao-Xin
name: Mao, Z. Q.
name: Ke, Xianglin
name: Ku, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A counter-intuitive enhancement of quantum fluctuation with larger spins, together with a few novel physical phenomena, is discovered in studying the recently observed emergent magnetism in high-temperature superconductor FeSe under pressure. Starting with experimental crystalline structure from our high-pressure X-ray refinement, we analyze theoretically the stability of the magnetically ordered state with a realistic spin-fermion model. We find surprisingly that in comparison with the magnetically ordered Fe-pnictides, the larger spins in FeSe suffer even stronger long-range quantum fluctuation that diminishes their ordering at ambient pressure. This "fail-to-order" quantum spin liquid state then develops into an ordered state above 1GPa due to weakened fluctuation accompanying the reduction of anion height and carrier density. The ordering further benefits from the ferro-orbital order and shows the observed enhancement around 1GPa. We further clarify the controversial nature of magnetism and its interplay with nematicity in FeSe in the same unified picture for all Fe-based superconductors. In addition, the versatile itinerant carriers produce interesting correlated metal behavior in a large region of phase space. Our study establishes a generic exceptional paradigm of stronger quantum fluctuation with larger spins that complements the standard knowledge of insulating magnetism.
description: 7 pages, 4 figures
Cosmological simulations of galaxy clusters with feedback from active galactic nuclei: profiles and scaling relations
Creators: name: Pike, Simon R.
name: Kay, Scott T.
name: Newton, Richard D. A.
name: Thomas, Peter A.
name: Jenkins, Adrian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results from a new set of 30 cosmological simulations of galaxy clusters, including the effects of radiative cooling, star formation, supernova feedback, black hole growth and AGN feedback. We first demonstrate that our AGN model is capable of reproducing the observed cluster pressure profile at redshift, z~0, once the AGN heating temperature of the targeted particles is made to scale with the final virial temperature of the halo. This allows the ejected gas to reach larger radii in higher-mass clusters than would be possible had a fixed heating temperature been used. Such a model also successfully reduces the star formation rate in brightest cluster galaxies and broadly reproduces a number of other observational properties at low redshift, including baryon, gas and star fractions; entropy profiles outside the core; and the X-ray luminosity-mass relation. Our results are consistent with the notion that the excess entropy is generated via selective removal of the densest material through radiative cooling; supernova and AGN feedback largely serve as regulation mechanisms, moving heated gas out of galaxies and away from cluster cores. However, our simulations fail to address a number of serious issues; for example, they are incapable of reproducing the shape and diversity of the observed entropy profiles within the core region. We also show that the stellar and black hole masses are sensitive to numerical resolution, particularly the gravitational softening length; a smaller value leads to more efficient black hole growth at early times and a smaller central galaxy.
description: 26 pages, 17 figures. Accepted for publication in MNRAS
A new study on a type Iax stellar remnant and its probable association with SN 1181
Creators: name: Lykou, Foteini
name: Parker, Quentin A.
name: Ritter, Andreas
name: Zijlstra, Albert A.
name: Hillier, D. John
name: Guerrero, Martín A.
name: Dû, Pascal Le
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report observations and modeling of the stellar remnant and presumed double-degenerate merger of Type~Iax supernova Pa30, which is the probable remnant of SN~1181~AD. It is the only known bound stellar SN remnant and the only star with Wolf-Rayet features that is neither a planetary nebula central star nor a massive Pop I progenitor. We model the unique emission-line spectrum with broad, strong O~{\sc vi} and O~{\sc viii} lines as a fast stellar wind and shocked, hot gas. Non-LTE wind modeling indicates a mass-loss rate of $\sim 10^{-6}\,\rm M_\odot\,yr^{-1}$ and a terminal velocity of $ \sim$15,000~km\,s$^{-1}$, consistent with earlier results. O~{\sc viii} lines indicate shocked gas temperatures of $T \simeq 4\,$MK. We derive a magnetic field upper limit of $B<2.5\,$MG, below earlier suggestions. The luminosity indicates a remnant mass of 1.0--1.65\,\rm M$_\odot$ with ejecta mass $0.15\pm0.05\,\rm M_\odot$. Archival photometry suggests the stellar remnant has dimmed by $\sim$0.5 magnitudes over 100 years. A low Ne/O$\,<0.15$ argues against a O-Ne white dwarf in the merger. A cold dust shell is only the second detection of dust in a SN Iax and the first of cold dust. Our ejecta mass and kinetic energy estimates of the remnant are consistent with Type Iax extragalactic sources.
description: 20 pages, 13 figures, 3 tables. Matches version accepted for publication by ApJ
A framework for understanding cancer comparative effectiveness research data needs
Creators: name: Carpenter, William R.
name: Meyer, Anne-Marie
name: Kosorok, Michael R.
name: Stürmer, Til
name: Abernethy, Amy P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Randomized controlled trials remain the gold standard for evaluating cancer intervention efficacy. Randomized trials are not always feasible, practical, or timely, and often don’t adequately reflect patient heterogeneity and real-world clinical practice. Comparative effectiveness research can leverage secondary data to help fill knowledge gaps randomized trials leave unaddressed; however, comparative effectiveness research also faces shortcomings. The goal of this project was to develop a new model and inform an evolving framework articulating cancer comparative effectiveness research data needs.
A Model-Constrained Tangent Slope Learning Approach for Dynamical Systems
Creators: name: Nguyen, Hai V.
name: Bui-Thanh, Tan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Dynamical Systems (math.DS)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Real-time accurate solutions of large-scale complex dynamical systems are in critical need for control, optimization, uncertainty quantification, and decision-making in practical engineering and science applications, especially digital twin applications. This paper contributes in this direction a model-constrained tangent slope learning (mcTangent) approach. At the heart of mcTangent is the synergy of several desirable strategies: i) a tangent slope learning to take advantage of the neural network speed and the time-accurate nature of the method of lines; ii) a model-constrained approach to encode the neural network tangent slope with the underlying governing equations; iii) sequential learning strategies to promote long-time stability and accuracy; and iv) data randomization approach to implicitly enforce the smoothness of the neural network tangent slope and its likeliness to the truth tangent slope up second order derivatives in order to further enhance the stability and accuracy of mcTangent solutions. Rigorous results are provided to analyze and justify the proposed approach. Several numerical results for the transport equation, viscous Burgers equation, and Navier-Stokes equation are presented to study and demonstrate the robustness and long-time accuracy of the proposed mcTangent learning approach.
Controlling species densities in structurally perturbed intransitive cycles with higher-order interactions
Creators: name: Chatterjee, Sourin
name: Chowdhury, Sayantan Nag
name: Ghosh, Dibakar
name: Hens, Chittaranjan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The persistence of biodiversity of species is a challenging proposition in ecological communities in the face of Darwinian selection. The present article investigates beyond the pairwise competitive interactions and provides a novel perspective for understanding the influence of higher-order interactions on the evolution of social phenotypes. Our simple model yields a prosperous outlook to demonstrate the impact of perturbations on intransitive competitive higher-order interactions. Using a mathematical technique, we show how alone the perturbed interaction network can quickly determine the coexistence equilibrium of competing species instead of solving a large system of ordinary differential equations. It is possible to split the system into multiple feasible cluster states depending on the number of perturbations. Our analysis also reveals the ratio between the unperturbed and perturbed species is inversely proportional to the amount of employed perturbation. Our results suggest that nonlinear dynamical systems and interaction topologies can be interplayed to comprehend species' coexistence under adverse conditions. Particularly our findings signify that less competition between two species increases their abundance and outperforms others.
description: 17 pages, 10 figures
A Vitória de Samotrácia: Niké
Creators: name: Gil, Francisco Baptista
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 360102
subject: Art history

description: A Vitória de Samotrácia (Niké), que se encontra no Museu do Louvre desde 1863, é uma das mais famosas estátuas da antiguidade, mas é também um monumento histórico associado a uma importante vitória naval.
Dependence of protein-induced lipid bilayer deformations on protein shape
Creators: name: Alas, Carlos D.
name: Haselwandter, Christoph A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biomolecules (q-bio.BM)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Membrane proteins typically deform the surrounding lipid bilayer membrane, which can play an important role in the function, regulation, and organization of membrane proteins. Membrane elasticity theory provides a beautiful description of protein-induced lipid bilayer deformations, in which all physical parameters can be directly determined from experiments. Analytic treatments of the membrane elasticity theory of protein-induced lipid bilayer deformations have largely focused on idealized protein shapes with circular cross section, and on perturbative solutions for proteins with non-circular cross section. We develop here a boundary value method (BVM) that permits the construction of non-perturbative analytic solutions of protein-induced lipid bilayer deformations for non-circular protein cross sections, for constant as well as variable boundary conditions along the bilayer-protein interface. We apply this BVM to protein-induced lipid bilayer thickness deformations. Our BVM reproduces available analytic solutions for proteins with circular cross section and yields, for proteins with non-circular cross section, excellent agreement with numerical, finite element solutions. On this basis, we formulate a simple analytic approximation of the bilayer thickness deformation energy associated with general protein shapes and show that, for modest deviations from rotational symmetry, this analytic approximation is in good agreement with BVM solutions. Using the BVM, we survey the dependence of protein-induced lipid bilayer thickness deformations on protein shape, and thus explore how the coupling of protein shape and bilayer thickness deformations affects protein oligomerization and transitions in protein conformational state.
description: 19 figures
Curves orthogonal to a vector field in Euclidean spaces
Creators: name: da Silva, Luiz C. B.
name: Ferreira, Gilson S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A04, 53A05, 53C22

description: A curve is rectifying if it lies on a moving hyperplane orthogonal to its curvature vector. In this work, we extend the main result of [Chen 2017, Tamkang J. Math. 48, 209] to any space dimension: we prove that rectifying curves are geodesics on hypercones. We later use this association to characterize rectifying curves that are also slant helices in three-dimensional space as geodesics of circular cones. In addition, we consider curves that lie on a moving hyperplane normal to (i) one of the normal vector fields of the Frenet frame and to (ii) a rotation minimizing vector field along the curve. The former class is characterized in terms of the constancy of a certain vector field normal to the curve, while the latter contains spherical and plane curves. Finally, we establish a formal mapping between rectifying curves in an $(m + 2)$-dimensional space and spherical curves in an $(m + 1)$-dimensional space. A curve is rectifying if it lies on a moving hyperplane orthogonal to its curvature vector.
description: 16 pages; keywords: Rectifying curve, geodesic, cone, spherical curve, plane curve, slant helix
Efficient classification of billions of points into complex geographic regions using hierarchical triangular mesh
Creators: name: Kondor, Dániel
name: Dobos, László
name: Csabai, István
name: Bodor, András
name: Vattay, Gábor
name: Budavári, Tamás
name: Szalay, Alexander S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: We present a case study about the spatial indexing and regional classification of billions of geographic coordinates from geo-tagged social network data using Hierarchical Triangular Mesh (HTM) implemented for Microsoft SQL Server. Due to the lack of certain features of the HTM library, we use it in conjunction with the GIS functions of SQL Server to significantly increase the efficiency of pre-filtering of spatial filter and join queries. For example, we implemented a new algorithm to compute the HTM tessellation of complex geographic regions and precomputed the intersections of HTM triangles and geographic regions for faster false-positive filtering. With full control over the index structure, HTM-based pre-filtering of simple containment searches outperforms SQL Server spatial indices by a factor of ten and HTM-based spatial joins run about a hundred times faster.
description: appears in Proceedings of the 26th International Conference on Scientific and Statistical Database Management (2014)
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 6 (95)]
Creators: name: Philipp Maria
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1439
Subjects: subject: Urkunde weltlicher Fürsten
subject: Urkunde
subject: 090

description: Filippo Maria Angelo Visconti, Herzog von Mailand usw., Graf von Pavia und Anghiera sowie Herr von Genua, beauftragt Niccolò Piccinino, vicecomes, marchio, comes usw. sowie sein locumtenens und capitaneus generalis, die comunitas und die Einwohner von Soncino über die von ihm gewährte umfassende Steuer- und Abgabenfreiheit zu unterrichten.
STEM analysis of deformation and B distribution in nanosecond laser ultra-doped Si$_{1-x}$ B$_x$
Creators: name: Hallais, G.
name: Patriarche, G.
name: Desvignes, L.
name: Débarre, D.
name: Chiodi, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the structural properties of highly B-doped silicon (> 2 at. %) realised by nanosecond laser doping. We investigate the crystalline quality, deformation and B distribution profile of the doped layer by STEM analysis followed by HAADF contrast studies and GPA, and compare the results to SIMS analyses and Hall measurements. When increasing the active B concentration above 4.3 at.%, the fully strained, perfectly crystalline, Si:B layer starts showing dislocations and stacking faults. These only disappear around 8 at.% when the Si:B layer is well accommodated to the substrate. When increasing B incorporation, we increasingly observe small precipitates, filaments with higher active B concentration and stacking faults. At the highest concentrations studied, large precipitates form, related to the decrease of active B concentration. The structural deformation, defect type and concentration, and active B distribution are connected to the initial increase and subsequent gradual loss of superconductivity.
International Survey of Patients With IBS: Symptom Features and Their Severity, Health Status, Treatments, and Risk Taking to Achieve Clinical Benefit
Creators: name: Morris, Carolyn Blank
name: Hu, Yuming J. B.
name: Norton, William F.
name: Leserman, Jane
name: Drossman, Douglas A.
name: Schneck, Susan
name: Bangdiwala, Shrikant I.
name: Dalton, Christine
name: Weinland, Stephan R.
name: Norton, Nancy J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: While clinicians generally make treatment decisions in IBS related to the type of symptoms, other factors such as the perceived severity and the risks patients are willing to tolerate for effective treatment are also important to consider. These factors are not fully understood.
A synthetic population of Wolf-Rayet stars in the LMC based on detailed single and binary star evolution models
Creators: name: Pauli, D.
name: Langer, N.
name: Aguilera-Dena, D. R.
name: Wang, C.
name: Marchant, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Without doubt, mass transfer in close binary systems contributes to the populations of Wolf-Rayet (WR) stars in the Milky Way and the Magellanic Clouds. However, the binary formation channel is so far not well explored. We want to remedy this by exploring large grids of detailed binary and single star evolution models computed with the publicly available MESA code, for a metallicity appropriate for the Large Magellanic Cloud (LMC). The binary models are calculated through Roche-lobe overflow and mass transfer, until the initially more massive star exhausts helium in its core. We distinguish models of WR and helium stars based on the estimated stellar wind optical depth. We use these models to build a synthetic WR population, assuming constant star formation. Our models can reproduce the WR population of the LMC to significant detail, including the number and luminosity functions of the main WR subtypes. We find that for binary fractions of 100% (50%), all LMC WR stars below $10^6\,L_{\odot}$ ($10^{5.7}\,L_{\odot}$) are stripped binary mass donors. We also identify several insightful mismatches. With a single star fraction of 50\%, our models produce too many yellow supergiants, calling either for a larger initial binary fraction, or for enhanced mass-loss near the Humphreys-Davidson limit. Our models predict more long-period WR binaries than observed, arguably due to an observational bias towards short periods. Our models also underpredict the shortest-period WR binaries, which may have implications for understanding the progenitors of double black hole mergers. The fraction of binary produced WR stars may be larger than often assumed, and outline the risk to mis-calibrate stellar physics when only single star models are used to reproduce the observed WR stars.
description: 15 pages + 13 pages appendix, 14 figures, 2 tables
The Influence of Nonalcoholic Fatty Liver Disease and Its Associated Comorbidities on Liver Transplant Outcomes
Creators: name: Hayashi, Paul H.
name: Kozlowski, Tomasz
name: Barritt, A. Sidney
name: Dellon, Evan S.
name: Gerber, David A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: To define the influence of nonalcoholic fatty liver disease (NAFLD) and its associated comorbidities on liver transplant outcomes.
The Jones-Krushkal polynomial and minimal diagrams of surface links
Creators: name: Boden, Hans U.
name: Karimi, Homayun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57M27

description: We prove a Kauffman-Murasugi-Thistlethwaite theorem for alternating links in thickened surfaces. It states that any reduced alternating diagram of a link in a thickened surface has minimal crossing number, and any two reduced alternating diagrams of the same link have the same writhe. This result is proved more generally for link diagrams that are adequate, and the proof involves a two-variable generalization of the Jones polynomial for surface links defined by Krushkal. The main result is used to establish the first and second Tait conjectures for links in thickened surfaces and for virtual links.
description: 32 pages, 20 figures, and 1 table
An elementary proof for the non-bijective version of Wigner's theorem
Creators: name: Gehér, Gy. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 46C05, 46C50

description: The non-bijective version of Wigner's theorem states that a map which is defined on the set of self-adjoint, rank-one projections (or pure states) of a complex Hilbert space and which preserves the transition probability between any two elements, is induced by a linear or antilinear isometry. We present a completely new, elementary and very short proof of this famous theorem which is very important in quantum mechanics. We do not assume bijectivity of the mapping or separability of the underlying space like in many other proofs.
description: 4 pages
Charmed baryon $Ω_c^0 \rightarrow Ω^- l^+ ν_l$ and $Ω_c^0 \rightarrow Ω_c^- π^+ (ρ^+)$ decays in light cone sum rules
Creators: name: Aliev, T. M.
name: Bilmis, S.
name: Savci, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The semileptonic $Ω_c^0 \rightarrow Ω^- l ν$ and non-leptonic $Ω_c^0 \to Ω^- π^+$, $Ω_c^0 \to Ω^- ρ^+$ decays of charmed $Ω_c$ baryon are studied within the light cone sum rules. The form factors responsible for $Ω_c \to Ω$ transitions are calculated using the distribution amplitudes of $Ω_c$ baryon. With the obtained form factors, the branching ratios of $Ω_c^0 \to Ω^- l^+ ν_l$, $Ω_c^0 \rightarrow Ω^- π^+$, and $Ω_c^0 \rightarrow Ω^- ρ^+$ decays are estimated. The results are compared with Belle data as well as the findings of the other approaches.
A Cross-sectional Analysis of the Prevalence of Barrett Esophagus in Otolaryngology Patients With Laryngeal Symptoms
Creators: name: Sauer, David A.
name: Jobe, Blair A.
name: Murphy, Thomas
name: Diggs, Brian S.
name: Morris, Cynthia D.
name: Schipper, Paul H.
name: Nason, Katie S.
name: Schindler, Joshua
name: Shaheen, Nicholas J.
name: Hoppo, Toshitaka
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Populations at risk for esophageal adenocarcinoma remain poorly defined. Laryngeal symptoms can be secondary to laryngopharyngeal reflux (LPR) and can occur without associated gastroesophageal reflux symptoms such as heartburn and regurgitation.
The radiation emitted from axion dark matter in a homogeneous magnetic field, and possibilities for detection
Creators: name: Xu, Shuo
name: Chen, Siyu
name: Zhang, Hong-Hao
name: Long, Guangbo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the direct radiation excited by oscillating axion (or axion-like particle) dark matter in a homogenous magnetic field and its detection scheme. We concretely derive the analytical expression of the axion-induced radiated power for a cylindrical uniform magnetic field. In the long wave limit, the radiation power is proportional to the square of the B-field volume and the axion mass $m_a$, whereas it oscillate as approaching the short wave limit and the peak powers are proportional to the side area of the cylindrical magnetic field and $m_a^{-2}$. The maximum power locates at mass $m_a\sim\frac{3π}{4R}$ for fixed radius $R$. Based on this characteristic of the power, we discuss a scheme to detect the axions in the mass range $1-10^4$\,neV, where four detectors of different bandwidths surround the B-field. The expected sensitivity for $m_a\lesssim1\,μ$eV under typical-parameter values can far exceed the existing constraints.
description: 10 pages, 9 figures, comments welcome!
The Classical Bloch Equations
Creators: name: Frimmer, Martin
name: Novotny, Lukas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherent control of a quantum mechanical two-level system is at the heart of magnetic resonance imaging, quantum information processing, and quantum optics. Among the most prominent phenomena in quantum coherent control are Rabi oscillations, Ramsey fringes and Hahn echoes. We demonstrate that these phenomena can be derived classically by use of a simple coupled harmonic oscillator model. The classical problem can be cast in a form that is formally equivalent to the quantum mechanical Bloch equations with the exception that the longitudinal and the transverse relaxation times ($T_1$ and $T_2$) are equal. The classical analysis is intuitive and well suited for familiarizing students with the basic concepts of quantum coherent control, while at the same time highlighting the fundamental differences between classical and quantum theories.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 6 (100)]
Creators: name: , Albertus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1441
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Albertus, Sohn des verstorbenen Jacobus de Marnis aus Soncino, wohnhaft in Mailand in der Gemeinde St. Johannis supra murum, verpachtet in seinem Namen und dem der Brüder Baptista und Jacobus, beide Söhne des verstorbenen Johannes de Marnis und wohnhaft in der Nachbarschaft St. Galli in Cremona, dem Rolandus de Sorino, Sohn des verstorbenen Cabrinus, aus der Nachbarschaft St. Hilarii in Cremona, alle Ländereien, gelegen auf dem Gebiet von Trinolo, für einen Zeitraum von neun Jahren.
Memory limitations are hidden in grammar
Creators: name: Gómez-Rodríguez, Carlos
name: Christiansen, Morten H.
name: Ferrer-i-Cancho, Ramon
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation and Language (cs.CL)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: The ability to produce and understand an unlimited number of different sentences is a hallmark of human language. Linguists have sought to define the essence of this generative capacity using formal grammars that describe the syntactic dependencies between constituents, independent of the computational limitations of the human brain. Here, we evaluate this independence assumption by sampling sentences uniformly from the space of possible syntactic structures. We find that the average dependency distance between syntactically related words, a proxy for memory limitations, is less than expected by chance in a collection of state-of-the-art classes of dependency grammars. Our findings indicate that memory limitations have permeated grammatical descriptions, suggesting that it may be impossible to build a parsimonious theory of human linguistic productivity independent of non-linguistic cognitive constraints.
description: Improved with reviewer feedback once again. In press in Glottometrics
Planck and BICEP/Keck Array 2018 constraints on primordial gravitational waves and perspectives for future B-mode polarization measurements
Creators: name: Paoletti, Daniela
name: Finelli, Fabio
name: Valiviita, Jussi
name: Hazumi, Masashi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Current and future B-mode polarization data are the most powerful observables to constrain gravitational waves from the early Universe. We set conservative constraints on tensor modes when relaxing the inflationary consistency condition $n_t=-r/8$ between the tensor tilt $n_t$ and the tensor-to-scalar ratio r. By adding a power-law spectrum of tensor perturbations to $Λ$CDM, and parameterizing this tensor contribution by two independent primordial tensor-to-scalar ratios $(r_1,r_2)$ at $k_1 = 0.005$ Mpc$^{-1}$ and $k_2 = 0.02$ Mpc$^{-1}$, Planck and BICEP/Keck Array 2018 data (BK18) lead to constraints $r_{0.005} < 0.030$ and $r_{0.02} < 0.098$ at 95% CL. The corresponding upper bound $r_{0.01} < 0.039$ is by a factor of 2 tighter than the one obtained with Planck 2018 and the older BK15 data. We then study the perspectives for future CMB experiments that will measure both the reionization bump and recombination peak of the B-mode polarization angular power spectrum, such as LiteBIRD. We test the robustness of the results to the choice of the scales for $(r_1,r_2)$ in these future perspectives. Whereas distinguishing $n_t=-r/8$ from exact scale invariance is impossible as expected, we show how radical, theoretically motivated departures from $n_t=-r/8$, which are consistent with the current data, could be distinguished with LiteBIRD. Moreover, LiteBIRD will be able to shrink the allowed parameter space area in the $(r_{0.005},r_{0.02})$ plane to less than one hundredth of the currently allowed area by Planck 2018 and BK18.
description: V2 matches PRD 106, 083528 (2022). 13 pages, 13 figures (2 added)
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 6 (102)]
Creators: name: Eugen, IV.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1443
Subjects: subject: Papsturkunde
subject: Urkunde
subject: 090

description: Papst Eugen IV. beauftragt Matteo Boniperti, Bischof von Mantua, damit, zu prüfen, welche Ländereien der Magister Guido de Gonzaga, Praepositus der Kirche und des Benediktinerklosters St. Benedicti in Polirone, mit größerem Gewinn an Dritte dauerhaft abtreten solle.
Light-tunable three-phase coexistence in mixed halide perovskites
Creators: name: Chen, Zehua
name: Brocks, Geert
name: Tao, Shuxia
name: Bobbert, Peter A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Mixed iodine-bromine perovskites used in solar cells undergo below a critical temperature an intrinsic demixing into phases with different iodine-bromine compositions. In addition, under illumination they show nucleation of an iodine-rich phase. We predict from thermodynamic considerations that in mixed iodine-bromine perovskites like MAPb(I$_{1-x}$Br$_x$)$_3$ the interplay of these effects can lead to coexistence of a bromine-rich, iodine-rich, and nearly iodine-pure nucleated phase. This three-phase coexistence occurs in a region in the composition-temperature phase diagram near the critical point for intrinsic demixing. We investigate the hysteresis in the evolution of this coexistence when temperature or illumination intensity are cycled. Depending on the particular way the coexistence is established, nearly iodine-pure nuclei should form either in the iodine-rich phase only or both in the bromine-rich and iodine-rich phases. Experimental verification of this fundamentally novel type of light-tunable three-phase coexistence should be possible by a combination of absorption and photoluminescence experiments.
description: 26 pages, 5 figures