cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Expansion of Urban Growth Boundary and Its Impact on Housing Affordability in the Portland Metropolitan Area, Oregon
Creators: name: Chen, Xiaodan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: The Portland metropolitan area has been a progressive region in terms of urban planning since its first establishment of urban growth boundary in 1979. While many research projects focused on the relationship between urban growth boundary and housing prices in the Portland metropolitan area, few explored whether the boundary expansion is effective or not to restrain the rapid rise in housing prices. This project examines the impacts of important factors, including the expansion of urban growth boundary, on the housing market in the Portland metropolitan area. Using time-series data from 1975 to 2018, this analysis finds no relationship between boundary expansion and home prices. Instead, home prices are significantly affected by population, employment, income per capita and mortgage interest rate. Understanding these relationships will help policymakers make effective strategies and policies to address housing affordability issues not only in the Portland metropolitan area but also in other places with urban growth boundaries.
The Epigraphia Carnatica Digitization Project
Creators: name: Bignami, Cristina
name: Mucciarelli, Elena
Publisher: name: Universität Tübingen
Year: 2019
Subjects: subject: Kannada , Epigraphik
subject: 400

description: Epigraphia Carnatica – the major oeuvre of L B Rice – established for itself a name in among historians of the region that comes surpassing most if not all other enterprises of comparable design. It is truly extraordinary both in volume as it is in the scope of detailed and systematically furnished information. That makes this corpus not only an invaluable source of historical and other data but also a material for the study of important concepts of knowledge organisation.
Transverse velocities and matter gradient correlations: a new signal and a new challenge to moving-lens analyses
Creators: name: Hotinli, Selim C.
name: Pierpaoli, Elena
name: Ferraro, Simone
name: Smith, Kendrick
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: An observer that is moving towards a high-density region sees, on average, a higher matter density and more foreground-emitting sources ahead than behind themself. Consequently, the average abundance and luminosity of objects producing cosmological signals around an in-falling dark matter halo is larger in the direction of the halo's motion. In this Letter, we demonstrate this effect from simulated cosmological maps of the thermal Sunyaev Zel'dovich effect and the cosmic infrared background. We find that, for a wide range of halo masses and redshifts, oriented stacked profiles of these foregrounds show significant, potentially detectable gradients aligned with the transverse velocity of halos. The signal depends on the halo's mass and redshift, as well as the physical properties of the cosmic web surrounding the halos. We show that this signal is sufficiently prominent to be detected in future Cosmic Microwave Background experiments, therefore offering a new window into the study of cosmological structures. We argue that the dipolar morphological structure of this signal, its orientation, as well as its overall large amplitude, constitute a challenge for the detection of the transverse velocity through the study of the moving lens effect for stacked halos.
description: 8 pages, 4 figures, comments welcome
Encyonopsis alpina Krammer & Lange-Bertalot (Krammer 1997
Creators: name: Kennedy, Bryan
name: Buckley, Yvonne
name: Allott, Norman
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Chromista
Ochrophyta
Bacillariophyceae
Cymbellales
Cymbellaceae
Encyonopsis
Encyonopsis alpina

description: Encyonopsis alpina Krammer & Lange-Bertalot (Figs 73–98 and Figs 99–138)
Description: Valves not or only slightly dorsiventral with weakly convex dorsal and weakly convex to straight ventral margin. Clear shoulders may be visible or absent. Length 11–20 μm; width 2.7–3.8 μm; maximum L:W ratio 5.9.Apices clearly protracted and capitate. Axial area narrow and central area only slightly differentiated dorsally. Striae weakly to clearly radiate, only occasionally with a somewhat shortened stria at valve centre. Striae uniform or occasionally appearing somewhat more coarsely spaced at valve centre (Figs 73 & 95). Average stria density only slightly higher dorsally (32.5 in 10 μm) than ventrally (31 in 10 μm). Raphe filiform, curved to the dorsal side, terminating in inconspicuous pores proximally and having small round to oval shaped pores distally. Puncta small rounded to slightly peanut shaped. Irish populations are morphologically equivalent to the type population, with the most significant difference from the species diagnosis relating to a higher range in stria (max 35.5 in 10 μm) and areolae density reported here.
 Ecology: Occurring in some alpine oligotrophic lakes with high oxygen concentration. E. alpina is a cosmopolitan taxon and occurs in well buffered, moderate to high alkalinity lakes (n=21) reaching a maximum relative abundance of 30%. A total phosphorus optimum close to 10 μg/l-P suggests a sensitivity score S=1 for lake ecological assessment (Fig.532).
description: Published as part of Kennedy, Bryan, Buckley, Yvonne & Allott, Norman, 2019, Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland, pp. 89-128 in Phytotaxa 395 (2) on pages 103-105, DOI: 10.11646/phytotaxa.395.2.5, http://zenodo.org/record/13716561
Two-Higgs-Doublet Model and Quark-Lepton Unification
Creators: name: Perez, Pavel Fileviez
name: Golias, Elliot
name: Plascencia, Alexis D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the Two-Higgs-Doublet Model predicted in the minimal theory for quark-lepton unification that can describe physics at the low scale. We discuss the relations among the different decay widths of the new Higgs bosons and study their phenomenology at the Large Hadron Collider. As a result of matter unification, this theory predicts a correlation between the decay widths of the heavy Higgs bosons into tau leptons and bottom quarks. We point out how to probe this theory using these relations and discuss the relevant flavor constraints.
description: 16 pages, 10 figures
Subjective Measures of Cognitive Workload for Emergency Nurses: Scoping Review Protocol
Creators: name: Surendran, Anu
name: McIlveen, Peter
name: Beccaria, Lisa
name: Rees, Sharon
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Psychological Phenomena and Processes
subject: Psychiatry and Psychology
subject: Medicine and Health Sciences
subject: Psychology
subject: FOS: Psychology
subject: Social and Behavioral Sciences
subject: Nursing
subject: FOS: Health sciences
subject: Nursing Administration
subject: Other Nursing
subject: Cognitive Psychology
subject: Health and Medical Administration
subject: Cognitive workload
subject: Emergency nursing
subject: Mental workload
subject: Nurse
subject: Nursing
subject: Scoping Review
subject: Self report
subject: Subjective scale

description: Emergency nurses experience high cognitive workload due to the unfavorable environment that they work in. This scoping review will find the subjective cognitive workload scales presently used by emergency nurses to report their cognitive workload experiences. This inquiry will also help in identifying specific subjective cognitive workload scales for emergency nurses.
Practice variation in the implementation of electroconvulsive therapy for patients experiencing behavioral and psychological symptoms of dementia: a systematic review
Creators: name: Nidumolu, Aditya
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences

description: The Behavioral and Psychological Symptoms of Dementia (BPSD) describes the non-cognitive symptoms that can emerge during the course of a dementing illness. Electroconvulsive Therapy's (ECT) use in BPSD use is typically limited to instances of medication non-response, medication intolerance, and significant concerns for patient safety such as those seen in depressive catatonic states. Despite the wealth of literature demonstrating ECT's effectiveness in challenging cases of BPSD, no published reviews or formal guidelines exist that inform clinicians of how ECT for BPSD should be implemented or which variations in practice exist. Moreover, studies reporting on the outcomes of ECT in BPSD describe their protocol in varying levels of detail and may not discuss the rationale for why certain implementation decisions are made. The present study aims to address an important gap in the literature by presenting the first review to focus on the implementation of ECT for BPSD. This information can be used to inform clinicians of their options in each stage of ECT implementation and contribute to the development of future clinical practice guidelines.
Encyonopsis angusta Krammer & Lange-Bertalot (Krammer 1997
Creators: name: Kennedy, Bryan
name: Buckley, Yvonne
name: Allott, Norman
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Chromista
Ochrophyta
Bacillariophyceae
Cymbellales
Cymbellaceae
Encyonopsis
Encyonopsis angusta

description: Encyonopsis angusta Krammer & Lange-Bertalot (Figs 139–151)
Description: In the diagnosis valves were described as weakly dorsiventral, linear to linear elliptical in outline with very weakly convex dorsal and ventral sides. Poles relatively broadly rounded capitate, with clear shoulders.Axial area is narrow and central area absent. Length 13–25 μm; width 3.4–3.6 μm; maximum L:W ratio 4.5, but when remeasured from original plates was determined to be ≥5.0. The combination of characters enabling identification were proposed as; outline with distinct shoulders, relatively broad capitate ends, very elongate, having approximately 33 delicate transapical striae in 10 μm.
 Several Encyonopsis taxa are present on the type slide and valves illustrated in Figs 139–151 most closely follow the illustrations of E. angusta provided by Krammer (1997b). The selected valves have a lower minimum valve width (2.9 μm) and greater maximum L:W ratio (6.2) but are otherwise comparable to the diagnosis. Another diatom more with an affinity to E. krammeri is well represented on the slide (Figs 152–173). These valves are clearly dorsiventral and have slightly less protracted, narrower rostrate to subcapitate poles. However, they probably represent a continuation of the same diatom described above (see plates of E. krammeri below and discussion). E. alpina (Figs 174–177) was also found on the slide, while E. subminuta and E. minuta are less frequent and are not illustrated.
 Ecology: Reported to be frequent in suitable oligotrophic alpine and pre-alpine lake habitats in waters with high oxygen concentration. Not found with certainty in Ireland, although valves with a similar morphology are occasionally encountered but are considered to represent a capitate form of E. krammeri.
description: Published as part of Kennedy, Bryan, Buckley, Yvonne & Allott, Norman, 2019, Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland, pp. 89-128 in Phytotaxa 395 (2) on page 106, DOI: 10.11646/phytotaxa.395.2.5, http://zenodo.org/record/13716561
Adapting an Unadaptable ASR System
Creators: name: Ma, Rao
name: Qian, Mengjie
name: Gales, Mark J. F.
name: Knill, Kate M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Computation and Language (cs.CL)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: As speech recognition model sizes and training data requirements grow, it is increasingly common for systems to only be available via APIs from online service providers rather than having direct access to models themselves. In this scenario it is challenging to adapt systems to a specific target domain. To address this problem we consider the recently released OpenAI Whisper ASR as an example of a large-scale ASR system to assess adaptation methods. An error correction based approach is adopted, as this does not require access to the model, but can be trained from either 1-best or N-best outputs that are normally available via the ASR API. LibriSpeech is used as the primary target domain for adaptation. The generalization ability of the system in two distinct dimensions are then evaluated. First, whether the form of correction model is portable to other speech recognition domains, and secondly whether it can be used for ASR models having a different architecture.
description: Proceedings of INTERSPEECH
Thermoelectric properties of a double quantum dot out of equilibrium in Kondo and intermediate valence regimes
Creators: name: Daroca, Diego Pérez
name: Roura-Bas, Pablo
name: Aligia, Armando A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study a system composed of two quantum dots connected in series between two leads at different temperatures, in the limit of large intratomic repulsion. Using the non-crossing approximation, we calculate the spectral densities at both dots $ρ_i(ω)$, the thermal and thermoelectric responses, thermopower and figure of merit in different regimes. The interatomic repulsionleads to finite heat transport even if the hopping between the dots $t=0$. The thermopower can be very large compared to single-dot systems in several regimes. The changes in sign of the thermoelectric current can be understood from the position and magnitude of the Kondo and charge-transfer peaks in $ρ_i(ω)$. The figure of merit can reach values near 0.7. The violation of the Wiedemann-Franz law is much more significant than in previously studied nanoscopic systems. An analysis of the widths of $ρ_i(ω)$ indicates that the dots are at effective temperatures $T_i$ intermediate between those of the two leads, which tend to be the same for large $T$.
Competition between excitonic charge and spin density waves: Influence of electron-phonon and Hund's rule couplings
Creators: name: Kaneko, Tatsuya
name: Zenker, Bernd
name: Fehske, Holger
name: Ohta, Yukinori
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the stability of excitonic ground states in the two-band Hubbard model with additional electron-phonon and Hund's rule couplings using a combination of mean-field and variational cluster approaches. We show that both the interband Coulomb interaction and the electron-phonon interaction will cooperatively stabilize a charge density wave (CDW) state which typifies an "excitonic" CDW if predominantly triggered by the effective interorbital electron-hole attraction or a "phononic" CDW if mostly caused by the coupling to the lattice degrees of freedom. By contrast, the Hund's rule coupling promotes an excitonic spin density wave. We determine the transition between excitonic charge and spin density waves and comment on a fixation of the phase of the excitonic order parameter that would prevent the formation of a superfluid condensate of excitons. The implications for exciton condensation in several material classes with strongly correlated electrons are discussed.
description: 8 pages, 6 figures
Surviving in a Metastable de Sitter Space-Time
Creators: name: Kashyap, Sitender Pratap
name: Mondal, Swapnamay
name: Sen, Ashoke
name: Verma, Mritunjay
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a metastable de Sitter space any object has a finite life expectancy beyond which it undergoes vacuum decay. However, by spreading into different parts of the universe which will fall out of causal contact of each other in future, a civilization can increase its collective life expectancy, defined as the average time after which the last settlement disappears due to vacuum decay. We study in detail the collective life expectancy of two comoving objects in de Sitter space as a function of the initial separation, the horizon radius and the vacuum decay rate. We find that even with a modest initial separation, the collective life expectancy can reach a value close to the maximum possible value of 1.5 times that of the individual object if the decay rate is less than 1% of the expansion rate. Our analysis can be generalized to any number of objects, general trajectories not necessarily at rest in the comoving coordinates and general FRW space-time. As part of our analysis we find that in the current state of the universe dominated by matter and cosmological constant, the vacuum decay rate is increasing as a function of time due to accelerated expansion of the volume of the past light cone. Present decay rate is about 3.7 times larger than the average decay rate in the past and the final decay rate in the cosmological constant dominated epoch will be about 56 times larger than the average decay rate in the past. This considerably weakens the lower bound on the half-life of our universe based on its current age.
description: LaTex file, 36 pages, 14 figures; v2: appendix added giving computation of decay rate for general equation of state
Search for lepton-flavour-violating $H\toμτ$ decays of the Higgs boson with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A direct search for lepton-flavour-violating (LFV) $H\toμτ$ decays of the recently discovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis is performed in the $H\toμτ_{\mathrm{had}}$ channel, where $τ_{\mathrm{had}}$ is a hadronically decaying $τ$-lepton. The search is based on the data sample of proton--proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3 fb$^{-1}$ at a centre-of-mass energy of $\sqrt{s}=8$ TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence-level upper limit on the branching fraction, Br($H\toμτ$), is 1.85% (1.24%).
description: Comments: 15 pages plus author list + cover pages (31 pages total), 3 figures, 3 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-08/
Direction-Projection-Permutation for High-Dimensional Hypothesis Tests
Creators: name: Wei, Susan
name: Lee, Chihoon
name: Marron,
name: Wichers, Lindsay
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: High-dimensional low sample size (HDLSS) data are becoming increasingly common in statistical applications. When the data can be partitioned into two classes, a basic task is to construct a classifier that can assign objects to the correct class. Binary linear classifiers have been shown to be especially useful in HDLSS settings and preferable to more complicated classifiers because of their ease of interpretability. We propose a computational tool called direction-projection-permutation (DiProPerm), which rigorously assesses whether a binary linear classifier is detecting statistically significant differences between two high-dimensional distributions. The basic idea behind DiProPerm involves working directly with the one-dimensional projections of the data induced by binary linear classifier. Theoretical properties of DiProPerm are studied under the HDLSS asymptotic regime whereby dimension diverges to infinity while sample size remains fixed. We show that certain variations of DiProPerm are consistent and that consistency is a nontrivial property of tests in the HDLSS asymptotic regime. The practical utility of DiProPerm is demonstrated on HDLSS gene expression microarray datasets. Finally, an empirical power study is conducted comparing DiProPerm to several alternative two-sample HDLSS tests to understand the advantages and disadvantages of each method. Susan Wei, Department of Statistics and Operations Research, University of North Carolina - Chapel Hill, NC 27599-3260 (E-mail: susanwe@live.unc.edu ). Chihoon Lee, Assistant Professor, Department of Statistics and Operations Research, University of North Carolina - Chapel Hill, NC 27599-3260 and currently at Department of Statistics, Colorado State University, Fort Collins, CO 80523-1877 (E-mail: chihoon@stat.colostate.edu ). Lindsay Wichers, Department of Environmental Sciences and Engineering, School of Public Health, University of North Carolina - Chapel Hill, NC 27599-3260 and currently at Environmental Media Assessment Group, MD B243-01, National Center for Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711 (E-mail: wichers.lindsay@epa.gov ), J. S. Marron, Department of Statistics and Operations Research, University of North Carolina - Chapel Hill, NC 27599-3260 (E-mail: marron@email.unc.edu ).
Design and analysis of an exactly divergence-free hybridized discontinuous Galerkin method for incompressible flows on meshes with quadrilateral cells
Creators: name: Dean, Joseph P.
name: Rhebergen, Sander
name: Wells, Garth N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 65F08, 65M15, 65N12, 65N30, 76D07

description: We generalise a hybridized discontinuous Galerkin method for incompressible flow problems to non-affine cells, showing that with a suitable element mapping the generalised method preserves a key invariance property that eludes most methods, namely that any irrotational component of the prescribed force is exactly balanced by the pressure gradient and does not affect the velocity field. This invariance property can be preserved in the discrete problem if the incompressibility constraint is satisfied in a sufficiently strong sense. We derive sufficient conditions to guarantee discretely divergence-free functions are exactly divergence-free and give examples of divergence-free finite elements on meshes with triangular, quadrilateral, tetrahedral, or hexahedral cells generated by a (possibly non-affine) map from their respective reference cells. In the case of quadrilateral cells, we prove an optimal error estimate for the velocity field that does not depend on the pressure approximation. Our analysis is supported by numerical results.
Reinforced Angle-Based Multicategory Support Vector Machines
Creators: name: Liu, Yufeng
name: Zhang, Chong
name: Wang, Junhui
name: Zhu, Hongtu
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The Support Vector Machine (SVM) is a very popular classification tool with many successful applications. It was originally designed for binary problems with desirable theoretical properties. Although there exist various Multicategory SVM (MSVM) extensions in the literature, some challenges remain. In particular, most existing MSVMs make use of k classification functions for a k-class problem, and the corresponding optimization problems are typically handled by existing quadratic programming solvers. In this paper, we propose a new group of MSVMs, namely the Reinforced Angle-based MSVMs (RAMSVMs), using an angle-based prediction rule with k − 1 functions directly. We prove that RAMSVMs can enjoy Fisher consistency. Moreover, we show that the RAMSVM can be implemented using the very efficient coordinate descent algorithm on its dual problem. Numerical experiments demonstrate that our method is highly competitive in terms of computational speed, as well as classification prediction performance. Supplemental materials for the article are available online.
Generation of polarization entanglement via the quantum Zeno effect
Creators: name: Nodurft, Ian C.
name: Shaw, Harry C.
name: Glasser, Ryan T.
name: Kirby, Brian T.
name: Searles, Thomas A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum Zeno effect reveals that the continuous observation of a quantum system can result in significant alterations to its evolution. Here, we present a method for establishing polarization entanglement between two initially unentangled photons in coupled waveguides via the quantum Zeno effect. We support our analytical investigation with numerical simulations of the underlying Schrodinger equation describing the system. Further, we extend our technique to three coupled waveguides in a planar configuration and determine the parameter regime required to generate three-qubit W-states. Our findings offer a powerful quantum state engineering approach for photonic quantum information technologies.
Rogue events in complex linear and nonlinear photonic media
Creators: name: Mattheakis, M.
name: Pitsios, I. J.
name: Tsironis, G. P.
name: Tzortzakis, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Ocean rogue waves (RW) -huge solitary waves- have for long triggered the interest of scientists. RWs emerge in a complex environment and it is still dubious the importance of linear versus nonlinear processes. Recent works have demonstrated that RWs appear in various other physical systems such as microwaves, nonlinear crystals, cold atoms, etc. In this work we investigate optical wave propagation in strongly scattering random lattices embedded in the bulk of transparent glasses. In the linear regime we observe the appearance of RWs that depend solely on the scattering properties of the medium. Interestingly, the addition of nonlinearity does not modify the RW statistics, while as the nonlinearities are increased multiple-filamentation and intensity clamping destroy the RW statistics. Numerical simulations agree nicely with the experimental findings and altogether prove that optical rogue waves are generated through the linear strong scattering in such complex environments.
Static dielectric function with exact exchange contribution in the electron liquid
Creators: name: Qian, Zhixin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The exchange contribution, $Π_1 ({\bf k}, 0)$, to the static dielectric function in the electron liquid is evaluated exactly. Expression for it is derived analytically in terms of one quadrature. The expression, as presented in Eq. (3) in the Introduction, turns out to be very simple. A fully explicit expression (with no more integral in it) for $Π_1 ({\bf k}, 0)$ is further developed in terms of series. Equation (3) is proved to be equal to the expression obtained before under some mathematical assumption by Engel and Vosko, thus in the meanwhile putting the latter on a rigorous basis. The expansions of $Π_1 ({\bf k}, 0)$ at the wavectors of $k=0$, $k=2k_F$, and at limiting large $k$ are derived. The results all verify those obtained by Engel and Vosko.
description: 15 pages
Heat transport in a Coulomb ion crystal with a topological defect
Creators: name: Timm, L.
name: Weimer, H.
name: Santos, L.
name: Mehlstäubler, T. E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The thermodynamics of low-dimensional systems departs significantly from phenomenologically deducted macroscopic laws. Particular examples, not yet fully understood, are provided by the breakdown of Fourier's law and the ballistic transport of heat. Low-dimensional trapped ion systems provide an experimentally accessible and well-controlled platform for the study of these problems. In our work, we study the transport of thermal energy in low-dimensional trapped ion crystals, focusing in particular on the influence of the Aubry-like transition that occurs when a topological defect is present in the crystal. We show that the transition significantly hinders efficient heat transport, being responsible for the rise of a marked temperature gradient in the non-equilibrium steady state. Further analysis reveals the importance of the motional eigenfrequencies of the crystal.
description: 9 pages, 5 figures
33 Briefe, 4 Beilagen an [Hans Caspar] Hirzel
Brief an Hirzel ...
Creators: name: Diogg, Felix Maria
name: Bueler, Franz Joseph
name: Fuchs, Felix Christoph Cajetan
name: Diogg-Curti, Anna Elsa Franziska
Publisher: name: [s.n.]
Year: 1789

description: von [Felix Maria] Diogg
description: Beilagen: 1 Kopie einer Schrift (Nr. 175); 1 Kartuschekärtchen betr. Monument des Salomon Gessner von Johann Peter Zwicky und Franz Joseph Bueler, dat. 1788 (Nr. 184a)
description: Davon: 6 Briefe von Franz Joseph Bueler an Hans Caspar Hirzel, dat. Rapperswil 1789-1792 (Nr. 176, 177, 180, 181, 182, 183); 1 Brief von Felix Christoph Cajetan Fuchs an Hans Caspar Hirzel, dat. Rapperswil 14.07.1791 (Nr. 179); 1 Brief von Lisette Diogg an Hans Caspar Hirzel, dat. Rapperswil 21.04.1794 (Nr. 205)
description: Dabei: 1 Brief (Auszug) von Dominikus von Brentano an [Karl Dominik?] Greit[h], dat. Kempten 15.03.1791 (Nr. 184); 1 Brief von Salzverwalter an Unbekannt, o.O. und o.J. (Nr. 209)
Galactic Kinematics and Observed Flare Rates of a Volume-Complete Sample of Mid-to-Late M-dwarfs: Constraints on the History of the Stellar Radiation Environment of Planets Orbiting Low-mass Stars
Creators: name: Medina, Amber A.
name: Winters, Jennifer G.
name: Irwin, Jonathan M.
name: Charbonneau, David
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 present a study of the relationship between galactic kinematics, flare rates, chromospheric activity, and rotation periods for a volume-complete, nearly all-sky sample of 219 single stars within 15 parsecs and with masses between 0.1$-$0.3 M$_{odot}l$ observed during the primary mission of TESS. We find all stars are consistent with a common value of $α$=1.984 $\pm$ 0.019 for the exponent of the flare frequency distribution. Using our measured stellar radial velocities and Gaia astrometry, we determine galactic UVW space motions. We find 64% of stars are members of the Galactic thin disk, 5% belong to the thick disk, and for the remaining 31%, we cannot confidently assign membership to either component. If we assume star formation has been constant in the thin disk for the past 8 Gyr, then based on the fraction that we observe to be active, we estimate the average age at which these stars transition from the saturated to the unsaturated flaring regime to be 2.4 $\pm$ 0.3 Gyr. This is consistent with the ages that we assign from galactic kinematics: We find that stars with Prot $<$ 10 days have an age of 2.0 $\pm$ 1.2 Gyr, stars with 10 $<$ Prot $\leq$ 90 days have an age of 5.6 $\pm$ 2.7 Gyr, and stars with Prot $>$ 90 days have an age of 12.9 $\pm$ 3.5 Gyr. We find that the average age of stars with Prot $<$ 10 days increases with decreasing stellar mass from 0.6 $\pm$ 0.3 Gyr (0.2 - 0.3 M$_{odot}$) to 2.3 $\pm$ 1.3 Gyr (0.1--0.2 M$_{odot}l$).
description: Accepted for publication in the Astrophysical Journal
SR-HARDI: Spatially Regularizing High Angular Resolution Diffusion Imaging
Creators: name: Ibrahim, Joseph G.
name: Cheng, Jian
name: Yap, Pew-Thian
name: Zhu, Hongtu
name: Rao, Shangbang
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: High angular resolution diffusion imaging (HARDI) has recently been of great interest in mapping the orientation of intra-voxel crossing fibers, and such orientation information allows one to infer the connectivity patterns prevalent among different brain regions and possible changes in such connectivity over time for various neurodegenerative and neuropsychiatric diseases. The aim of this paper is to propose a penalized multi-scale adaptive regression model (PMARM) framework to spatially and adaptively infer the orientation distribution function (ODF) of water diffusion in regions with complex fiber configurations. In PMARM, we reformulate the HARDI imaging reconstruction as a weighted regularized least-squares regression (WRLSR) problem. Similarity and distance weights are introduced to account for spatial smoothness of HARDI, while preserving the unknown discontinuities (e.g., edges between white matter and grey matter) of HARDI. The L1 penalty function is introduced to ensure the sparse solutions of ODFs, while a scaled L1 weighted estimator is calculated to correct the bias introduced by the L1 penalty at each voxel. In PMARM, we integrate the multiscale adaptive regression models (Li et al., 2011), the propagation-separation method (Polzehl and Spokoiny, 2000), and Lasso (least absolute shrinkage and selection operator) (Tibshirani, 1996) to adaptively estimate ODFs across voxels. Experimental results indicate that PMARM can reduce the angle detection errors on fiber crossing area and provide more accurate reconstruction than standard voxel-wise methods.
Equiangular Lines and Covers of the Complete Graph
Creators: name: Coutinho, Gabriel
name: Godsil, Chris
name: Shirazi, Mirhamed
name: Zhan, Harmony
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The relation between equiangular sets of lines in the real space and distance-regular double covers of the complete graph is well known and studied since the work of Seidel and others in the 70's. The main topic of this paper is to continue the study on how complex equiangular lines relate to distance-regular covers of the complete graph with larger index. Given a set of equiangular lines meeting the relative (or Welch) bound, we show that if the entries of the corresponding Gram matrix are prime roots of unity, then these lines can be used to construct an antipodal distance-regular graph of diameter three. We also study in detail how the absolute (or Gerzon) bound for a set of equiangular lines can be used to derive bounds of the parameters of abelian distance-regular covers of the complete graph.
Long-range parity non-conserving electron-nucleon interaction
Creators: name: Dzuba, V. A.
name: Flambaum, V. V.
name: Munro-Laylim, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: As known, electron vacuum polarization by nuclear Coulomb field produces Uehling potential with the range $\hbar/2m_e c$. Similarly, neutrino vacuum polarization by $Z$ boson field produces long range potential $\sim G^2/r^5$ with the large range $\hbar/2m_νc$. Attempts to measure parity-conserving part of this potential produced only limits on this potential which are several orders of magnitude higher than the standard model predictions. We show that parity non-conserving (PNC) part of the neutrino exchange potential $W_L(r)$ gives a significant fraction of the observed PNC effects. Mixed $Z-γ$ electron vacuum polarization produces PNC potential with range $\hbar/2m_e c$, which exceeds the range of the weak interaction by five orders of magnitude. We calculate contribution of the long-range PNC potentials to the nuclear spin independent and nuclear spin dependent PNC effects. The cases of the single-isotope PNC effects and the ratio of PNC effects in different isotopes are considered for Ca, Cs, Ba, Sm, Dy, Yb, Hg, Tl, Pb, Bi, Fr, Ra atoms and ions. Contributions of the long-range PNC potentials ($\sim$1\%) significantly exceed experimental error (0.35\%) for PNC effect in Cs.
description: 6 pages, 1 figure
Bayesian Model Assessment in Joint Modeling of Longitudinal and Survival Data With Applications to Cancer Clinical Trials
Creators: name: Shen, Wei
name: Ibrahim, Joseph G.
name: Zhang, Danjie
name: Chen, Ming-Hui
name: Boye, Mark E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Joint models for longitudinal and survival data are routinely used in clinical trials or other studies to assess a treatment effect while accounting for longitudinal measures such as patient-reported outcomes (PROs). In the Bayesian framework, the deviance information criterion (DIC) and the logarithm of the pseudo marginal likelihood (LPML) are two well-known Bayesian criteria for comparing joint models. However, these criteria do not provide separate assessments of each component of the joint model. In this paper, we develop a novel decomposition of DIC and LPML to assess the fit of the longitudinal and survival components of the joint model, separately. Based on this decomposition, we then propose new Bayesian model assessment criteria, namely, ΔDIC and ΔLPML, to determine the importance and contribution of the longitudinal (survival) data to the model fit of the survival (longitudinal) data. Moreover, we develop an efficient Monte Carlo method for computing the Conditional Predictive Ordinate (CPO) statistics in the joint modeling setting. A simulation study is conducted to examine the empirical performance of the proposed criteria and the proposed methodology is further applied to a case study in mesothelioma.
Dancing in the dark: detecting a population of distant primordial black holes
Creators: name: Martinelli, Matteo
name: Scarcella, Francesca
name: Hogg, Natalie B.
name: Kavanagh, Bradley J.
name: Gaggero, Daniele
name: Fleury, Pierre
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Primordial black holes (PBHs) are compact objects proposed to have formed in the early Universe from the collapse of small-scale over-densities. Their existence may be detected from the observation of gravitational waves (GWs) emitted by PBH mergers, if the signals can be distinguished from those produced by the merging of astrophysical black holes. In this work, we forecast the capability of the Einstein Telescope, a proposed third-generation GW observatory, to identify and measure the abundance of a subdominant population of distant PBHs, using the difference in the redshift evolution of the merger rate of the two populations as our discriminant. We carefully model the merger rates and generate realistic mock catalogues of the luminosity distances and errors that would be obtained from GW signals observed by the Einstein Telescope. We use two independent statistical methods to analyse the mock data, finding that, with our more powerful, likelihood-based method, PBH abundances as small as $f_\mathrm{PBH} \approx 7 \times 10^{-6}$ ($f_\mathrm{PBH} \approx 2\times10^{-6}$) would be distinguishable from $f_\mathrm{PBH} = 0$ at the level of $3σ$ with a one year (ten year) observing run of the Einstein Telescope. Our mock data generation code, darksirens, is fast, easily extendable and publicly available on GitLab.
description: 45 pages, 15 figures. This version aligns with the one accepted by JCAP. Mock generation code available at https://gitlab.com/matmartinelli/darksirens
Encyonopsis tavirana Krammer 1997
Creators: name: Kennedy, Bryan
name: Buckley, Yvonne
name: Allott, Norman
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Chromista
Ochrophyta
Bacillariophyceae
Cymbellales
Cymbellaceae
Encyonopsis
Encyonopsis tavirana

description: Encyonopsis tavirana Krammer (Figs 178–200)
 Description: Valves weakly dorsiventral, linear to linear-lanceolate in outline with very weakly convex dorsal and ventral sides, smaller forms are more lanceolate. Poles are relatively broadly rounded capitate, dorsally and ventrally with clear shoulders or indication of shoulders in larger valves, smaller forms without shoulders. Axial area very narrow and central area absent. Length 10–18.9 μm; width 3.4–4.2 μm; maximum L:W ratio 5.1. Average stria density slightly higher dorsally (30.5 in 10 μm) than ventrally (29 in 10 μm) but have a higher range than given with the diagnosis when re-measured (29–32 in 10 μm dorsally and 26–30 in 10 μm ventrally). Raphe filiform, curved more ventrally with proximal ends bent to dorsal side. Areolae are more distinctly bent or peanut-shaped relative to comparable taxa. A combination of characters can be used to separate the more robust valves of E. tavirana from others including, a linear lanceolate outline with robust valves having very well-developed shoulders, a greater maximum valve width, clearly capitate broadly rounded poles, and approximately 30 transapical striae or less in 10 μm.
 Populations of a diatom closely resembling E. tavirana from Irish lakes are comparable in morphology, including broadly capitate valves and poles, distinct shoulders and relatively fine striae. But average valve width and maximum L: W ratio (4.3 versus 5.1) are lower relative to the type population. This species is likely to have been frequently confused with E. microcephala in the past, given their similar robust outline and equivalent valve width. However, ultrastructural characteristics clearly differ from the type population of E. microcephala illustrated in Krammer 1997b. Distal raphe endings are more gently deflected over the apices and terminate in a small rounded pore in the latter taxon. Internally the clearly constricted alveoli and lower stria density (23–25 in 10 μm) are also differentiating.
 Ecology: Originally found in the Portuguese Algarve and abundant in wells, mountainous regions and oligotrophic waters with high oxygen content. Irish populations with an affinity to E. tavirana occur in 13 lakes with a maximum relative abundance of 47%. It occurs in more eutrophic lakes and has a higher nutrient optimum relative to the type population or compared to others in the microcephala -complex, suggesting a diatom sensitivity score S=3 for lake ecological assessment (Fig. 532–533).
description: Published as part of Kennedy, Bryan, Buckley, Yvonne & Allott, Norman, 2019, Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland, pp. 89-128 in Phytotaxa 395 (2) on page 107, DOI: 10.11646/phytotaxa.395.2.5, http://zenodo.org/record/13716561
ปัจจัยที่ส่งผลต่อประสิทธิภาพการบริหารจัดการระบบเทคโนโลยีสารสนเทศในโรงเรียน
Creators: name: จรูญเกียรติ  กุลสอน
name: จำปี  โยธารินทร์
name: บุญชนะ  ทาธยธี
name: พรชัย  วันทุม
Publisher: name: บัณฑิตวิทยาลัย มหาวิทยาลัยราชภัฏนครสวรรค์
Year: 2559
Subjects: เทคโนโลยีสารสนเทศ
ประสิทธิภาพ
โรงเรียน

description: วารสารวิชาการและวิจัยสังคมศาสตร์, 11, 33, 1-12
Encyonopsis minuta Krammer & Reichardt 1997
Creators: name: Kennedy, Bryan
name: Buckley, Yvonne
name: Allott, Norman
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Chromista
Ochrophyta
Bacillariophyceae
Cymbellales
Cymbellaceae
Encyonopsis
Encyonopsis minuta

description: Encyonopsis minuta Krammer & Reichardt (Figs 288–352)
Description: Outline symmetric to weakly dorsiventral, lanceolate with weakly convex dorsal and ventral sides. Poles are capitate to subcapitate, always broadly rounded and at least slightly protracted even in diminutive valves. Typically lacking clear shoulders with a gently sloping outline. Axial area is very narrow and central area absent. Length 8.0– 17.0 μm; width 2.8–3.8 μm; maximum L:W ratio 4.9. Striae parallel to weakly radiate and rarely with only a slightly shortened single stria at centre in smaller valves. Striae appearing quite uniform and easily visible over valve length towards poles. Maximum stria density in Irish populations higher than reported for type description (~ 30–32 in 10 μm). Raphe filiform, dorsally deflected at centre, with a distinctive short section recurved back towards centre on ventral side and lacking obvious expanded terminal raphe endings. Areolae always small and rounded.
 Easily confused with E. microcephala in past studies but populations converge and may be difficult to separate in LM. The size reduction series (Figs 320–352) are less clearly protracted and have a higher maximum stria density but retain the distinctive ultrastructure of more clearly capitate frustules. The general size, outline and broadly rounded poles in combination with relatively coarse sub-parallel striae are often sufficiently clear to permit identification in most cases.
Ecology: Described as cosmopolitan and well distributed in suitable habitats in temperate to boreal regions. Well distributed in this dataset occurring in 40 lakes, reaching a maximum relative abundance of 16.5%. Density is greatest at the upper end of the alkalinity gradient and a total phosphorous optimum near 10 μg/l-P suggests a diatom sensitivity score of S=1 for lake ecological assessment.
description: Published as part of Kennedy, Bryan, Buckley, Yvonne & Allott, Norman, 2019, Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland, pp. 89-128 in Phytotaxa 395 (2) on pages 107-110, DOI: 10.11646/phytotaxa.395.2.5, http://zenodo.org/record/13716561
1 Briefentwurf an [Caroline Luise von Schaumburg-Lippe]
Brief an Schaumburg-Lippe ...
Creators: name: Nägeli, Hans Georg
Publisher: name: [s.n.]
Year: 1832

description: von [Hans Georg Nägeli]
description: Verso Notentext von der Hand Hans Georg Nägelis. Beiliegend: Transkription
Minimal Left-Right Symmetric Dark Matter
Creators: name: Heeck, Julian
name: Patra, Sudhanwa
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We show that left-right symmetric models can easily accommodate stable TeV-scale dark matter particles without the need for an ad-hoc stabilizing symmetry. The stability of a newly introduced multiplet arises either accidentally as in the Minimal Dark Matter framework or comes courtesy of the remaining unbroken $\mathbb{Z}_2$ subgroup of $B-L$. Only one new parameter is introduced: the mass of the new multiplet. As minimal examples we study left-right fermion triplets and quintuplets and show that they can form viable two-component dark matter. This approach is in particular valid for $SU(2)\times SU(2)\times U(1)$ models that explain the recent diboson excess at ATLAS in terms of a new charged gauge boson of mass 2 TeV.
description: 6 pages, 4 figures; minor improvements; to appear in PRL